(2006-08-06) rescue-bootcd

extra/linux-2.6.10/security/.built-in.o.cmd

@@ -0,0 +1 @@
+cmd_security/built-in.o :=  ld -m elf_i386  -r -o security/built-in.o security/commoncap.o

extra/linux-2.6.10/security/.commoncap.o.cmd

@@ -0,0 +1,288 @@
+cmd_security/commoncap.o := gcc -Wp,-MD,security/.commoncap.o.d -nostdinc -iwithprefix include -D__KERNEL__ -Iinclude  -Wall -Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -O2     -fomit-frame-pointer -pipe -msoft-float -mpreferred-stack-boundary=2 -fno-unit-at-a-time -march=pentium-mmx -Iinclude/asm-i386/mach-default -Wdeclaration-after-statement    -DKBUILD_BASENAME=commoncap -DKBUILD_MODNAME=commoncap -c -o security/commoncap.o security/commoncap.c
+
+deps_security/commoncap.o := \
+  security/commoncap.c \
+  include/linux/config.h \
+    $(wildcard include/config/h.h) \
+  include/linux/module.h \
+    $(wildcard include/config/modules.h) \
+    $(wildcard include/config/modversions.h) \
+    $(wildcard include/config/module/unload.h) \
+    $(wildcard include/config/kallsyms.h) \
+  include/linux/sched.h \
+    $(wildcard include/config/keys.h) \
+    $(wildcard include/config/schedstats.h) \
+    $(wildcard include/config/smp.h) \
+    $(wildcard include/config/numa.h) \
+    $(wildcard include/config/security.h) \
+    $(wildcard include/config/preempt.h) \
+    $(wildcard include/config/magic/sysrq.h) \
+  include/asm/param.h \
+  include/linux/capability.h \
+  include/linux/types.h \
+    $(wildcard include/config/uid16.h) \
+  include/linux/posix_types.h \
+  include/linux/stddef.h \
+  include/linux/compiler.h \
+  include/linux/compiler-gcc3.h \
+  include/linux/compiler-gcc.h \
+  include/asm/posix_types.h \
+  include/asm/types.h \
+    $(wildcard include/config/highmem64g.h) \
+    $(wildcard include/config/lbd.h) \
+  include/linux/spinlock.h \
+    $(wildcard include/config/debug/spinlock.h) \
+    $(wildcard include/config/lockmeter.h) \
+  include/linux/preempt.h \
+  include/linux/linkage.h \
+  include/asm/linkage.h \
+    $(wildcard include/config/regparm.h) \
+    $(wildcard include/config/x86/alignment/16.h) \
+  include/linux/thread_info.h \
+  include/linux/bitops.h \
+  include/asm/bitops.h \
+  include/asm/thread_info.h \
+    $(wildcard include/config/4kstacks.h) \
+    $(wildcard include/config/debug/stack/usage.h) \
+  include/asm/page.h \
+    $(wildcard include/config/x86/use/3dnow.h) \
+    $(wildcard include/config/x86/pae.h) \
+    $(wildcard include/config/hugetlb/page.h) \
+    $(wildcard include/config/highmem4g.h) \
+    $(wildcard include/config/discontigmem.h) \
+  include/asm/processor.h \
+    $(wildcard include/config/mk8.h) \
+    $(wildcard include/config/mk7.h) \
+  include/asm/vm86.h \
+  include/asm/math_emu.h \
+  include/asm/sigcontext.h \
+  include/asm/segment.h \
+  include/asm/cpufeature.h \
+  include/asm/msr.h \
+  include/asm/system.h \
+    $(wildcard include/config/x86/cmpxchg.h) \
+    $(wildcard include/config/x86/oostore.h) \
+  include/linux/kernel.h \
+    $(wildcard include/config/debug/spinlock/sleep.h) \
+  /usr/lib/gcc/i686-pc-linux-gnu/3.4.1/include/stdarg.h \
+  include/asm/byteorder.h \
+    $(wildcard include/config/x86/bswap.h) \
+  include/linux/byteorder/little_endian.h \
+  include/linux/byteorder/swab.h \
+  include/linux/byteorder/generic.h \
+  include/asm/bug.h \
+  include/asm-generic/bug.h \
+  include/linux/cache.h \
+  include/asm/cache.h \
+    $(wildcard include/config/x86/l1/cache/shift.h) \
+  include/linux/threads.h \
+    $(wildcard include/config/nr/cpus.h) \
+  include/asm/percpu.h \
+  include/asm-generic/percpu.h \
+  include/linux/stringify.h \
+  include/linux/timex.h \
+    $(wildcard include/config/time/interpolation.h) \
+  include/linux/time.h \
+  include/linux/seqlock.h \
+  include/asm/timex.h \
+    $(wildcard include/config/x86/elan.h) \
+    $(wildcard include/config/x86/tsc.h) \
+    $(wildcard include/config/x86/generic.h) \
+  include/linux/jiffies.h \
+  include/asm/div64.h \
+  include/linux/rbtree.h \
+  include/linux/cpumask.h \
+    $(wildcard include/config/hotplug/cpu.h) \
+  include/linux/bitmap.h \
+  include/linux/string.h \
+  include/asm/string.h \
+  include/asm/semaphore.h \
+  include/asm/atomic.h \
+    $(wildcard include/config/m386.h) \
+  include/linux/wait.h \
+  include/linux/list.h \
+  include/linux/prefetch.h \
+  include/asm/current.h \
+  include/linux/rwsem.h \
+    $(wildcard include/config/rwsem/generic/spinlock.h) \
+  include/asm/rwsem.h \
+  include/asm/ptrace.h \
+    $(wildcard include/config/frame/pointer.h) \
+  include/asm/mmu.h \
+  include/linux/smp.h \
+  include/linux/sem.h \
+    $(wildcard include/config/sysvipc.h) \
+  include/linux/ipc.h \
+  include/asm/ipcbuf.h \
+  include/asm/sembuf.h \
+  include/linux/signal.h \
+  include/asm/signal.h \
+  include/asm/siginfo.h \
+  include/asm-generic/siginfo.h \
+  include/linux/resource.h \
+  include/asm/resource.h \
+  include/linux/securebits.h \
+  include/linux/fs_struct.h \
+  include/linux/completion.h \
+  include/linux/pid.h \
+  include/linux/percpu.h \
+  include/linux/slab.h \
+    $(wildcard include/config/.h) \
+  include/linux/gfp.h \
+  include/linux/mmzone.h \
+    $(wildcard include/config/force/max/zoneorder.h) \
+  include/linux/numa.h \
+  include/linux/topology.h \
+    $(wildcard include/config/sched/smt.h) \
+  include/asm/topology.h \
+  include/asm-generic/topology.h \
+  include/linux/init.h \
+    $(wildcard include/config/hotplug.h) \
+  include/linux/kmalloc_sizes.h \
+    $(wildcard include/config/mmu.h) \
+    $(wildcard include/config/large/allocs.h) \
+  include/linux/param.h \
+  include/linux/timer.h \
+  include/linux/aio.h \
+  include/linux/workqueue.h \
+  include/linux/aio_abi.h \
+  include/linux/stat.h \
+  include/asm/stat.h \
+  include/linux/kmod.h \
+    $(wildcard include/config/kmod.h) \
+  include/linux/errno.h \
+  include/asm/errno.h \
+  include/asm-generic/errno.h \
+  include/asm-generic/errno-base.h \
+  include/linux/elf.h \
+  include/asm/elf.h \
+  include/asm/user.h \
+  include/linux/utsname.h \
+  include/linux/kobject.h \
+  include/linux/sysfs.h \
+    $(wildcard include/config/sysfs.h) \
+  include/linux/kref.h \
+  include/linux/kobject_uevent.h \
+    $(wildcard include/config/kobject/uevent.h) \
+  include/linux/moduleparam.h \
+  include/asm/local.h \
+  include/asm/module.h \
+    $(wildcard include/config/m486.h) \
+    $(wildcard include/config/m586.h) \
+    $(wildcard include/config/m586tsc.h) \
+    $(wildcard include/config/m586mmx.h) \
+    $(wildcard include/config/m686.h) \
+    $(wildcard include/config/mpentiumii.h) \
+    $(wildcard include/config/mpentiumiii.h) \
+    $(wildcard include/config/mpentiumm.h) \
+    $(wildcard include/config/mpentium4.h) \
+    $(wildcard include/config/mk6.h) \
+    $(wildcard include/config/mcrusoe.h) \
+    $(wildcard include/config/mefficeon.h) \
+    $(wildcard include/config/mwinchipc6.h) \
+    $(wildcard include/config/mwinchip2.h) \
+    $(wildcard include/config/mwinchip3d.h) \
+    $(wildcard include/config/mcyrixiii.h) \
+    $(wildcard include/config/mviac3/2.h) \
+  include/linux/security.h \
+    $(wildcard include/config/security/network.h) \
+  include/linux/fs.h \
+    $(wildcard include/config/dnotify.h) \
+    $(wildcard include/config/quota.h) \
+    $(wildcard include/config/epoll.h) \
+    $(wildcard include/config/auditsyscall.h) \
+  include/linux/limits.h \
+  include/linux/kdev_t.h \
+  include/linux/ioctl.h \
+  include/asm/ioctl.h \
+  include/linux/dcache.h \
+  include/linux/rcupdate.h \
+  include/linux/prio_tree.h \
+  include/linux/radix-tree.h \
+  include/linux/audit.h \
+    $(wildcard include/config/audit.h) \
+  include/linux/quota.h \
+  include/linux/dqblk_xfs.h \
+  include/linux/dqblk_v1.h \
+  include/linux/dqblk_v2.h \
+  include/linux/nfs_fs_i.h \
+  include/linux/nfs.h \
+  include/linux/sunrpc/msg_prot.h \
+  include/linux/fcntl.h \
+  include/asm/fcntl.h \
+  include/linux/err.h \
+  include/linux/binfmts.h \
+  include/linux/shm.h \
+  include/asm/shmparam.h \
+  include/asm/shmbuf.h \
+  include/linux/msg.h \
+  include/asm/msgbuf.h \
+  include/linux/file.h \
+  include/linux/mm.h \
+    $(wildcard include/config/sysctl.h) \
+    $(wildcard include/config/stack/growsup.h) \
+    $(wildcard include/config/highmem.h) \
+    $(wildcard include/config/shmem.h) \
+    $(wildcard include/config/proc/fs.h) \
+    $(wildcard include/config/debug/pagealloc.h) \
+    $(wildcard include/config/arch/gate/area.h) \
+  include/asm/pgtable.h \
+    $(wildcard include/config/highpte.h) \
+  include/asm/fixmap.h \
+    $(wildcard include/config/x86/local/apic.h) \
+    $(wildcard include/config/x86/io/apic.h) \
+    $(wildcard include/config/x86/visws/apic.h) \
+    $(wildcard include/config/x86/f00f/bug.h) \
+    $(wildcard include/config/x86/cyclone/timer.h) \
+    $(wildcard include/config/acpi/boot.h) \
+    $(wildcard include/config/pci/mmconfig.h) \
+  include/asm/acpi.h \
+    $(wildcard include/config/acpi/pci.h) \
+    $(wildcard include/config/acpi/sleep.h) \
+  include/asm/apicdef.h \
+  include/asm/pgtable-2level-defs.h \
+  include/asm/pgtable-2level.h \
+  include/asm-generic/pgtable.h \
+  include/linux/page-flags.h \
+    $(wildcard include/config/swap.h) \
+  include/linux/mman.h \
+  include/asm/mman.h \
+  include/linux/pagemap.h \
+  include/linux/highmem.h \
+  include/asm/cacheflush.h \
+  include/asm/uaccess.h \
+    $(wildcard include/config/x86/intel/usercopy.h) \
+    $(wildcard include/config/x86/wp/works/ok.h) \
+  include/linux/swap.h \
+  include/linux/smp_lock.h \
+    $(wildcard include/config/lock/kernel.h) \
+  include/linux/skbuff.h \
+    $(wildcard include/config/netfilter.h) \
+    $(wildcard include/config/bridge/netfilter.h) \
+    $(wildcard include/config/vlan/8021q.h) \
+    $(wildcard include/config/vlan/8021q/module.h) \
+    $(wildcard include/config/netfilter/debug.h) \
+    $(wildcard include/config/hippi.h) \
+    $(wildcard include/config/net/sched.h) \
+    $(wildcard include/config/net/cls/act.h) \
+  include/linux/poll.h \
+  include/asm/poll.h \
+  include/linux/net.h \
+  include/asm/socket.h \
+  include/asm/sockios.h \
+  include/net/checksum.h \
+  include/asm/checksum.h \
+  include/linux/in6.h \
+  include/linux/netlink.h \
+  include/linux/socket.h \
+    $(wildcard include/config/compat.h) \
+  include/linux/sockios.h \
+  include/linux/uio.h \
+  include/linux/ptrace.h \
+  include/linux/xattr.h \
+  include/linux/hugetlb.h \
+    $(wildcard include/config/hugetlbfs.h) \
+
+security/commoncap.o: $(deps_security/commoncap.o)
+
+$(deps_security/commoncap.o):

extra/linux-2.6.10/security/Kconfig

@@ -0,0 +1,90 @@
+#
+# Security configuration
+#
+
+menu "Security options"
+
+config KEYS
+	bool "Enable access key retention support"
+	help
+	  This option provides support for retaining authentication tokens and
+	  access keys in the kernel.
+
+	  It also includes provision of methods by which such keys might be
+	  associated with a process so that network filesystems, encryption
+	  support and the like can find them.
+
+	  Furthermore, a special type of key is available that acts as keyring:
+	  a searchable sequence of keys. Each process is equipped with access
+	  to five standard keyrings: UID-specific, GID-specific, session,
+	  process and thread.
+
+	  If you are unsure as to whether this is required, answer N.
+
+config KEYS_DEBUG_PROC_KEYS
+	bool "Enable the /proc/keys file by which all keys may be viewed"
+	depends on KEYS
+	help
+	  This option turns on support for the /proc/keys file through which
+	  all the keys on the system can be listed.
+
+	  This option is a slight security risk in that it makes it possible
+	  for anyone to see all the keys on the system. Normally the manager
+	  pretends keys that are inaccessible to a process don't exist as far
+	  as that process is concerned.
+
+config SECURITY
+	bool "Enable different security models"
+	help
+	  This allows you to choose different security modules to be
+	  configured into your kernel.
+
+	  If this option is not selected, the default Linux security
+	  model will be used.
+
+	  If you are unsure how to answer this question, answer N.
+
+config SECURITY_NETWORK
+	bool "Socket and Networking Security Hooks"
+	depends on SECURITY
+	help
+	  This enables the socket and networking security hooks.
+	  If enabled, a security module can use these hooks to
+	  implement socket and networking access controls.
+	  If you are unsure how to answer this question, answer N.
+
+config SECURITY_CAPABILITIES
+	tristate "Default Linux Capabilities"
+	depends on SECURITY
+	help
+	  This enables the "default" Linux capabilities functionality.
+	  If you are unsure how to answer this question, answer Y.
+
+config SECURITY_ROOTPLUG
+	tristate "Root Plug Support"
+	depends on USB && SECURITY
+	help
+	  This is a sample LSM module that should only be used as such.
+	  It prevents any programs running with egid == 0 if a specific
+	  USB device is not present in the system.
+
+	  See <http://www.linuxjournal.com/article.php?sid=6279> for
+	  more information about this module.
+	  
+	  If you are unsure how to answer this question, answer N.
+
+config SECURITY_SECLVL
+	tristate "BSD Secure Levels"
+	depends on SECURITY
+	select CRYPTO_SHA1
+	help
+	  Implements BSD Secure Levels as an LSM.  See
+	  Documentation/seclvl.txt for instructions on how to use this
+	  module.
+
+	  If you are unsure how to answer this question, answer N.
+
+source security/selinux/Kconfig
+
+endmenu
+

extra/linux-2.6.10/security/Makefile

@@ -0,0 +1,19 @@
+#
+# Makefile for the kernel security code
+#
+
+obj-$(CONFIG_KEYS)			+= keys/
+subdir-$(CONFIG_SECURITY_SELINUX)	+= selinux
+
+# if we don't select a security model, use the default capabilities
+ifneq ($(CONFIG_SECURITY),y)
+obj-y		+= commoncap.o
+endif
+
+# Object file lists
+obj-$(CONFIG_SECURITY)			+= security.o dummy.o
+# Must precede capability.o in order to stack properly.
+obj-$(CONFIG_SECURITY_SELINUX)		+= selinux/built-in.o
+obj-$(CONFIG_SECURITY_CAPABILITIES)	+= commoncap.o capability.o
+obj-$(CONFIG_SECURITY_ROOTPLUG)		+= commoncap.o root_plug.o
+obj-$(CONFIG_SECURITY_SECLVL)		+= seclvl.o

extra/linux-2.6.10/security/capability.c

@@ -0,0 +1,104 @@
+/*
+ *  Capabilities Linux Security Module
+ *
+ *	This program is free software; you can redistribute it and/or modify
+ *	it under the terms of the GNU General Public License as published by
+ *	the Free Software Foundation; either version 2 of the License, or
+ *	(at your option) any later version.
+ *
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/security.h>
+#include <linux/file.h>
+#include <linux/mm.h>
+#include <linux/mman.h>
+#include <linux/pagemap.h>
+#include <linux/swap.h>
+#include <linux/smp_lock.h>
+#include <linux/skbuff.h>
+#include <linux/netlink.h>
+#include <linux/ptrace.h>
+#include <linux/moduleparam.h>
+
+static struct security_operations capability_ops = {
+	.ptrace =			cap_ptrace,
+	.capget =			cap_capget,
+	.capset_check =			cap_capset_check,
+	.capset_set =			cap_capset_set,
+	.capable =			cap_capable,
+	.settime =			cap_settime,
+	.netlink_send =			cap_netlink_send,
+	.netlink_recv =			cap_netlink_recv,
+
+	.bprm_apply_creds =		cap_bprm_apply_creds,
+	.bprm_set_security =		cap_bprm_set_security,
+	.bprm_secureexec =		cap_bprm_secureexec,
+
+	.inode_setxattr =		cap_inode_setxattr,
+	.inode_removexattr =		cap_inode_removexattr,
+
+	.task_post_setuid =		cap_task_post_setuid,
+	.task_reparent_to_init =	cap_task_reparent_to_init,
+
+	.syslog =                       cap_syslog,
+
+	.vm_enough_memory =             cap_vm_enough_memory,
+};
+
+#define MY_NAME __stringify(KBUILD_MODNAME)
+
+/* flag to keep track of how we were registered */
+static int secondary;
+
+static int capability_disable;
+module_param_named(disable, capability_disable, int, 0);
+MODULE_PARM_DESC(disable, "To disable capabilities module set disable = 1");
+
+static int __init capability_init (void)
+{
+	if (capability_disable) {
+		printk(KERN_INFO "Capabilities disabled at initialization\n");
+		return 0;
+	}
+	/* register ourselves with the security framework */
+	if (register_security (&capability_ops)) {
+		/* try registering with primary module */
+		if (mod_reg_security (MY_NAME, &capability_ops)) {
+			printk (KERN_INFO "Failure registering capabilities "
+				"with primary security module.\n");
+			return -EINVAL;
+		}
+		secondary = 1;
+	}
+	printk (KERN_INFO "Capability LSM initialized%s\n",
+		secondary ? " as secondary" : "");
+	return 0;
+}
+
+static void __exit capability_exit (void)
+{
+	if (capability_disable)
+		return;
+	/* remove ourselves from the security framework */
+	if (secondary) {
+		if (mod_unreg_security (MY_NAME, &capability_ops))
+			printk (KERN_INFO "Failure unregistering capabilities "
+				"with primary module.\n");
+		return;
+	}
+
+	if (unregister_security (&capability_ops)) {
+		printk (KERN_INFO
+			"Failure unregistering capabilities with the kernel\n");
+	}
+}
+
+security_initcall (capability_init);
+module_exit (capability_exit);
+
+MODULE_DESCRIPTION("Standard Linux Capabilities Security Module");
+MODULE_LICENSE("GPL");

extra/linux-2.6.10/security/commoncap.c

@@ -0,0 +1,414 @@
+/* Common capabilities, needed by capability.o and root_plug.o 
+ *
+ *	This program is free software; you can redistribute it and/or modify
+ *	it under the terms of the GNU General Public License as published by
+ *	the Free Software Foundation; either version 2 of the License, or
+ *	(at your option) any later version.
+ *
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/security.h>
+#include <linux/file.h>
+#include <linux/mm.h>
+#include <linux/mman.h>
+#include <linux/pagemap.h>
+#include <linux/swap.h>
+#include <linux/smp_lock.h>
+#include <linux/skbuff.h>
+#include <linux/netlink.h>
+#include <linux/ptrace.h>
+#include <linux/xattr.h>
+#include <linux/hugetlb.h>
+
+int cap_netlink_send(struct sock *sk, struct sk_buff *skb)
+{
+	NETLINK_CB(skb).eff_cap = current->cap_effective;
+	return 0;
+}
+
+EXPORT_SYMBOL(cap_netlink_send);
+
+int cap_netlink_recv(struct sk_buff *skb)
+{
+	if (!cap_raised(NETLINK_CB(skb).eff_cap, CAP_NET_ADMIN))
+		return -EPERM;
+	return 0;
+}
+
+EXPORT_SYMBOL(cap_netlink_recv);
+
+int cap_capable (struct task_struct *tsk, int cap)
+{
+	/* Derived from include/linux/sched.h:capable. */
+	if (cap_raised(tsk->cap_effective, cap))
+		return 0;
+	return -EPERM;
+}
+
+int cap_settime(struct timespec *ts, struct timezone *tz)
+{
+	if (!capable(CAP_SYS_TIME))
+		return -EPERM;
+	return 0;
+}
+
+int cap_ptrace (struct task_struct *parent, struct task_struct *child)
+{
+	/* Derived from arch/i386/kernel/ptrace.c:sys_ptrace. */
+	if (!cap_issubset (child->cap_permitted, current->cap_permitted) &&
+	    !capable(CAP_SYS_PTRACE))
+		return -EPERM;
+	return 0;
+}
+
+int cap_capget (struct task_struct *target, kernel_cap_t *effective,
+		kernel_cap_t *inheritable, kernel_cap_t *permitted)
+{
+	/* Derived from kernel/capability.c:sys_capget. */
+	*effective = cap_t (target->cap_effective);
+	*inheritable = cap_t (target->cap_inheritable);
+	*permitted = cap_t (target->cap_permitted);
+	return 0;
+}
+
+int cap_capset_check (struct task_struct *target, kernel_cap_t *effective,
+		      kernel_cap_t *inheritable, kernel_cap_t *permitted)
+{
+	/* Derived from kernel/capability.c:sys_capset. */
+	/* verify restrictions on target's new Inheritable set */
+	if (!cap_issubset (*inheritable,
+			   cap_combine (target->cap_inheritable,
+					current->cap_permitted))) {
+		return -EPERM;
+	}
+
+	/* verify restrictions on target's new Permitted set */
+	if (!cap_issubset (*permitted,
+			   cap_combine (target->cap_permitted,
+					current->cap_permitted))) {
+		return -EPERM;
+	}
+
+	/* verify the _new_Effective_ is a subset of the _new_Permitted_ */
+	if (!cap_issubset (*effective, *permitted)) {
+		return -EPERM;
+	}
+
+	return 0;
+}
+
+void cap_capset_set (struct task_struct *target, kernel_cap_t *effective,
+		     kernel_cap_t *inheritable, kernel_cap_t *permitted)
+{
+	target->cap_effective = *effective;
+	target->cap_inheritable = *inheritable;
+	target->cap_permitted = *permitted;
+}
+
+int cap_bprm_set_security (struct linux_binprm *bprm)
+{
+	/* Copied from fs/exec.c:prepare_binprm. */
+
+	/* We don't have VFS support for capabilities yet */
+	cap_clear (bprm->cap_inheritable);
+	cap_clear (bprm->cap_permitted);
+	cap_clear (bprm->cap_effective);
+
+	/*  To support inheritance of root-permissions and suid-root
+	 *  executables under compatibility mode, we raise all three
+	 *  capability sets for the file.
+	 *
+	 *  If only the real uid is 0, we only raise the inheritable
+	 *  and permitted sets of the executable file.
+	 */
+
+	if (!issecure (SECURE_NOROOT)) {
+		if (bprm->e_uid == 0 || current->uid == 0) {
+			cap_set_full (bprm->cap_inheritable);
+			cap_set_full (bprm->cap_permitted);
+		}
+		if (bprm->e_uid == 0)
+			cap_set_full (bprm->cap_effective);
+	}
+	return 0;
+}
+
+void cap_bprm_apply_creds (struct linux_binprm *bprm, int unsafe)
+{
+	/* Derived from fs/exec.c:compute_creds. */
+	kernel_cap_t new_permitted, working;
+
+	new_permitted = cap_intersect (bprm->cap_permitted, cap_bset);
+	working = cap_intersect (bprm->cap_inheritable,
+				 current->cap_inheritable);
+	new_permitted = cap_combine (new_permitted, working);
+
+	if (bprm->e_uid != current->uid || bprm->e_gid != current->gid ||
+	    !cap_issubset (new_permitted, current->cap_permitted)) {
+		current->mm->dumpable = 0;
+
+		if (unsafe & ~LSM_UNSAFE_PTRACE_CAP) {
+			if (!capable(CAP_SETUID)) {
+				bprm->e_uid = current->uid;
+				bprm->e_gid = current->gid;
+			}
+			if (!capable (CAP_SETPCAP)) {
+				new_permitted = cap_intersect (new_permitted,
+							current->cap_permitted);
+			}
+		}
+	}
+
+	current->suid = current->euid = current->fsuid = bprm->e_uid;
+	current->sgid = current->egid = current->fsgid = bprm->e_gid;
+
+	/* For init, we want to retain the capabilities set
+	 * in the init_task struct. Thus we skip the usual
+	 * capability rules */
+	if (current->pid != 1) {
+		current->cap_permitted = new_permitted;
+		current->cap_effective =
+		    cap_intersect (new_permitted, bprm->cap_effective);
+	}
+
+	/* AUD: Audit candidate if current->cap_effective is set */
+
+	current->keep_capabilities = 0;
+}
+
+int cap_bprm_secureexec (struct linux_binprm *bprm)
+{
+	/* If/when this module is enhanced to incorporate capability
+	   bits on files, the test below should be extended to also perform a 
+	   test between the old and new capability sets.  For now,
+	   it simply preserves the legacy decision algorithm used by
+	   the old userland. */
+	return (current->euid != current->uid ||
+		current->egid != current->gid);
+}
+
+int cap_inode_setxattr(struct dentry *dentry, char *name, void *value,
+		       size_t size, int flags)
+{
+	if (!strncmp(name, XATTR_SECURITY_PREFIX,
+		     sizeof(XATTR_SECURITY_PREFIX) - 1)  &&
+	    !capable(CAP_SYS_ADMIN))
+		return -EPERM;
+	return 0;
+}
+
+int cap_inode_removexattr(struct dentry *dentry, char *name)
+{
+	if (!strncmp(name, XATTR_SECURITY_PREFIX,
+		     sizeof(XATTR_SECURITY_PREFIX) - 1)  &&
+	    !capable(CAP_SYS_ADMIN))
+		return -EPERM;
+	return 0;
+}
+
+/* moved from kernel/sys.c. */
+/* 
+ * cap_emulate_setxuid() fixes the effective / permitted capabilities of
+ * a process after a call to setuid, setreuid, or setresuid.
+ *
+ *  1) When set*uiding _from_ one of {r,e,s}uid == 0 _to_ all of
+ *  {r,e,s}uid != 0, the permitted and effective capabilities are
+ *  cleared.
+ *
+ *  2) When set*uiding _from_ euid == 0 _to_ euid != 0, the effective
+ *  capabilities of the process are cleared.
+ *
+ *  3) When set*uiding _from_ euid != 0 _to_ euid == 0, the effective
+ *  capabilities are set to the permitted capabilities.
+ *
+ *  fsuid is handled elsewhere. fsuid == 0 and {r,e,s}uid!= 0 should 
+ *  never happen.
+ *
+ *  -astor 
+ *
+ * cevans - New behaviour, Oct '99
+ * A process may, via prctl(), elect to keep its capabilities when it
+ * calls setuid() and switches away from uid==0. Both permitted and
+ * effective sets will be retained.
+ * Without this change, it was impossible for a daemon to drop only some
+ * of its privilege. The call to setuid(!=0) would drop all privileges!
+ * Keeping uid 0 is not an option because uid 0 owns too many vital
+ * files..
+ * Thanks to Olaf Kirch and Peter Benie for spotting this.
+ */
+static inline void cap_emulate_setxuid (int old_ruid, int old_euid,
+					int old_suid)
+{
+	if ((old_ruid == 0 || old_euid == 0 || old_suid == 0) &&
+	    (current->uid != 0 && current->euid != 0 && current->suid != 0) &&
+	    !current->keep_capabilities) {
+		cap_clear (current->cap_permitted);
+		cap_clear (current->cap_effective);
+	}
+	if (old_euid == 0 && current->euid != 0) {
+		cap_clear (current->cap_effective);
+	}
+	if (old_euid != 0 && current->euid == 0) {
+		current->cap_effective = current->cap_permitted;
+	}
+}
+
+int cap_task_post_setuid (uid_t old_ruid, uid_t old_euid, uid_t old_suid,
+			  int flags)
+{
+	switch (flags) {
+	case LSM_SETID_RE:
+	case LSM_SETID_ID:
+	case LSM_SETID_RES:
+		/* Copied from kernel/sys.c:setreuid/setuid/setresuid. */
+		if (!issecure (SECURE_NO_SETUID_FIXUP)) {
+			cap_emulate_setxuid (old_ruid, old_euid, old_suid);
+		}
+		break;
+	case LSM_SETID_FS:
+		{
+			uid_t old_fsuid = old_ruid;
+
+			/* Copied from kernel/sys.c:setfsuid. */
+
+			/*
+			 * FIXME - is fsuser used for all CAP_FS_MASK capabilities?
+			 *          if not, we might be a bit too harsh here.
+			 */
+
+			if (!issecure (SECURE_NO_SETUID_FIXUP)) {
+				if (old_fsuid == 0 && current->fsuid != 0) {
+					cap_t (current->cap_effective) &=
+					    ~CAP_FS_MASK;
+				}
+				if (old_fsuid != 0 && current->fsuid == 0) {
+					cap_t (current->cap_effective) |=
+					    (cap_t (current->cap_permitted) &
+					     CAP_FS_MASK);
+				}
+			}
+			break;
+		}
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+void cap_task_reparent_to_init (struct task_struct *p)
+{
+	p->cap_effective = CAP_INIT_EFF_SET;
+	p->cap_inheritable = CAP_INIT_INH_SET;
+	p->cap_permitted = CAP_FULL_SET;
+	p->keep_capabilities = 0;
+	return;
+}
+
+int cap_syslog (int type)
+{
+	if ((type != 3 && type != 10) && !capable(CAP_SYS_ADMIN))
+		return -EPERM;
+	return 0;
+}
+
+/*
+ * Check that a process has enough memory to allocate a new virtual
+ * mapping. 0 means there is enough memory for the allocation to
+ * succeed and -ENOMEM implies there is not.
+ *
+ * We currently support three overcommit policies, which are set via the
+ * vm.overcommit_memory sysctl.  See Documentation/vm/overcommit-accounting
+ *
+ * Strict overcommit modes added 2002 Feb 26 by Alan Cox.
+ * Additional code 2002 Jul 20 by Robert Love.
+ */
+int cap_vm_enough_memory(long pages)
+{
+	unsigned long free, allowed;
+
+	vm_acct_memory(pages);
+
+	/*
+	 * Sometimes we want to use more memory than we have
+	 */
+	if (sysctl_overcommit_memory == OVERCOMMIT_ALWAYS)
+		return 0;
+
+	if (sysctl_overcommit_memory == OVERCOMMIT_GUESS) {
+		unsigned long n;
+
+		free = get_page_cache_size();
+		free += nr_swap_pages;
+
+		/*
+		 * Any slabs which are created with the
+		 * SLAB_RECLAIM_ACCOUNT flag claim to have contents
+		 * which are reclaimable, under pressure.  The dentry
+		 * cache and most inode caches should fall into this
+		 */
+		free += atomic_read(&slab_reclaim_pages);
+
+		/*
+		 * Leave the last 3% for root
+		 */
+		if (!capable(CAP_SYS_ADMIN))
+			free -= free / 32;
+
+		if (free > pages)
+			return 0;
+
+		/*
+		 * nr_free_pages() is very expensive on large systems,
+		 * only call if we're about to fail.
+		 */
+		n = nr_free_pages();
+		if (!capable(CAP_SYS_ADMIN))
+			n -= n / 32;
+		free += n;
+
+		if (free > pages)
+			return 0;
+		vm_unacct_memory(pages);
+		return -ENOMEM;
+	}
+
+	allowed = (totalram_pages - hugetlb_total_pages())
+	       	* sysctl_overcommit_ratio / 100;
+	/*
+	 * Leave the last 3% for root
+	 */
+	if (!capable(CAP_SYS_ADMIN))
+		allowed -= allowed / 32;
+	allowed += total_swap_pages;
+
+	if (atomic_read(&vm_committed_space) < allowed)
+		return 0;
+
+	vm_unacct_memory(pages);
+
+	return -ENOMEM;
+}
+
+EXPORT_SYMBOL(cap_capable);
+EXPORT_SYMBOL(cap_settime);
+EXPORT_SYMBOL(cap_ptrace);
+EXPORT_SYMBOL(cap_capget);
+EXPORT_SYMBOL(cap_capset_check);
+EXPORT_SYMBOL(cap_capset_set);
+EXPORT_SYMBOL(cap_bprm_set_security);
+EXPORT_SYMBOL(cap_bprm_apply_creds);
+EXPORT_SYMBOL(cap_bprm_secureexec);
+EXPORT_SYMBOL(cap_inode_setxattr);
+EXPORT_SYMBOL(cap_inode_removexattr);
+EXPORT_SYMBOL(cap_task_post_setuid);
+EXPORT_SYMBOL(cap_task_reparent_to_init);
+EXPORT_SYMBOL(cap_syslog);
+EXPORT_SYMBOL(cap_vm_enough_memory);
+
+MODULE_DESCRIPTION("Standard Linux Common Capabilities Security Module");
+MODULE_LICENSE("GPL");

extra/linux-2.6.10/security/keys/Makefile

@@ -0,0 +1,14 @@
+#
+# Makefile for key management
+#
+
+obj-y := \
+	key.o \
+	keyring.o \
+	keyctl.o \
+	process_keys.o \
+	user_defined.o \
+	request_key.o
+
+obj-$(CONFIG_KEYS_COMPAT) += compat.o
+obj-$(CONFIG_PROC_FS) += proc.o

extra/linux-2.6.10/security/keys/compat.c

@@ -0,0 +1,78 @@
+/* compat.c: 32-bit compatibility syscall for 64-bit systems
+ *
+ * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/sched.h>
+#include <linux/syscalls.h>
+#include <linux/keyctl.h>
+#include <linux/compat.h>
+#include "internal.h"
+
+/*****************************************************************************/
+/*
+ * the key control system call, 32-bit compatibility version for 64-bit archs
+ * - this should only be called if the 64-bit arch uses weird pointers in
+ *   32-bit mode or doesn't guarantee that the top 32-bits of the argument
+ *   registers on taking a 32-bit syscall are zero
+ * - if you can, you should call sys_keyctl directly
+ */
+asmlinkage long compat_sys_keyctl(u32 option,
+			      u32 arg2, u32 arg3, u32 arg4, u32 arg5)
+{
+	switch (option) {
+	case KEYCTL_GET_KEYRING_ID:
+		return keyctl_get_keyring_ID(arg2, arg3);
+
+	case KEYCTL_JOIN_SESSION_KEYRING:
+		return keyctl_join_session_keyring(compat_ptr(arg3));
+
+	case KEYCTL_UPDATE:
+		return keyctl_update_key(arg2, compat_ptr(arg3), arg4);
+
+	case KEYCTL_REVOKE:
+		return keyctl_revoke_key(arg2);
+
+	case KEYCTL_DESCRIBE:
+		return keyctl_describe_key(arg2, compat_ptr(arg3), arg4);
+
+	case KEYCTL_CLEAR:
+		return keyctl_keyring_clear(arg2);
+
+	case KEYCTL_LINK:
+		return keyctl_keyring_link(arg2, arg3);
+
+	case KEYCTL_UNLINK:
+		return keyctl_keyring_unlink(arg2, arg3);
+
+	case KEYCTL_SEARCH:
+		return keyctl_keyring_search(arg2, compat_ptr(arg3),
+					     compat_ptr(arg4), arg5);
+
+	case KEYCTL_READ:
+		return keyctl_read_key(arg2, compat_ptr(arg3), arg4);
+
+	case KEYCTL_CHOWN:
+		return keyctl_chown_key(arg2, arg3, arg4);
+
+	case KEYCTL_SETPERM:
+		return keyctl_setperm_key(arg2, arg3);
+
+	case KEYCTL_INSTANTIATE:
+		return keyctl_instantiate_key(arg2, compat_ptr(arg3), arg4,
+					      arg5);
+
+	case KEYCTL_NEGATE:
+		return keyctl_negate_key(arg2, arg3, arg4);
+
+	default:
+		return -EOPNOTSUPP;
+	}
+
+} /* end compat_sys_keyctl() */

extra/linux-2.6.10/security/keys/internal.h

@@ -0,0 +1,123 @@
+/* internal.h: authentication token and access key management internal defs
+ *
+ * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#ifndef _INTERNAL_H
+#define _INTERNAL_H
+
+#include <linux/key.h>
+#include <linux/key-ui.h>
+
+extern struct key_type key_type_dead;
+extern struct key_type key_type_user;
+
+/*****************************************************************************/
+/*
+ * keep track of keys for a user
+ * - this needs to be separate to user_struct to avoid a refcount-loop
+ *   (user_struct pins some keyrings which pin this struct)
+ * - this also keeps track of keys under request from userspace for this UID
+ */
+struct key_user {
+	struct rb_node		node;
+	struct list_head	consq;		/* construction queue */
+	spinlock_t		lock;
+	atomic_t		usage;		/* for accessing qnkeys & qnbytes */
+	atomic_t		nkeys;		/* number of keys */
+	atomic_t		nikeys;		/* number of instantiated keys */
+	uid_t			uid;
+	int			qnkeys;		/* number of keys allocated to this user */
+	int			qnbytes;	/* number of bytes allocated to this user */
+};
+
+#define KEYQUOTA_MAX_KEYS	100
+#define KEYQUOTA_MAX_BYTES	10000
+#define KEYQUOTA_LINK_BYTES	4		/* a link in a keyring is worth 4 bytes */
+
+extern struct rb_root	key_user_tree;
+extern spinlock_t	key_user_lock;
+extern struct key_user	root_key_user;
+
+extern struct key_user *key_user_lookup(uid_t uid);
+extern void key_user_put(struct key_user *user);
+
+
+
+extern struct rb_root key_serial_tree;
+extern spinlock_t key_serial_lock;
+extern struct semaphore key_alloc_sem;
+extern struct rw_semaphore key_construction_sem;
+extern wait_queue_head_t request_key_conswq;
+
+
+extern void keyring_publish_name(struct key *keyring);
+
+extern int __key_link(struct key *keyring, struct key *key);
+
+extern struct key *__keyring_search_one(struct key *keyring,
+					const struct key_type *type,
+					const char *description,
+					key_perm_t perm);
+
+typedef int (*key_match_func_t)(const struct key *, const void *);
+
+extern struct key *keyring_search_aux(struct key *keyring,
+				      struct key_type *type,
+				      const void *description,
+				      key_match_func_t match);
+
+extern struct key *search_process_keyrings_aux(struct key_type *type,
+					       const void *description,
+					       key_match_func_t match);
+
+extern struct key *find_keyring_by_name(const char *name, key_serial_t bound);
+
+extern int install_thread_keyring(struct task_struct *tsk);
+
+/*
+ * keyctl functions
+ */
+extern long keyctl_get_keyring_ID(key_serial_t, int);
+extern long keyctl_join_session_keyring(const char __user *);
+extern long keyctl_update_key(key_serial_t, const void __user *, size_t);
+extern long keyctl_revoke_key(key_serial_t);
+extern long keyctl_keyring_clear(key_serial_t);
+extern long keyctl_keyring_link(key_serial_t, key_serial_t);
+extern long keyctl_keyring_unlink(key_serial_t, key_serial_t);
+extern long keyctl_describe_key(key_serial_t, char __user *, size_t);
+extern long keyctl_keyring_search(key_serial_t, const char __user *,
+				  const char __user *, key_serial_t);
+extern long keyctl_read_key(key_serial_t, char __user *, size_t);
+extern long keyctl_chown_key(key_serial_t, uid_t, gid_t);
+extern long keyctl_setperm_key(key_serial_t, key_perm_t);
+extern long keyctl_instantiate_key(key_serial_t, const void __user *,
+				   size_t, key_serial_t);
+extern long keyctl_negate_key(key_serial_t, unsigned, key_serial_t);
+
+
+/*
+ * debugging key validation
+ */
+#ifdef KEY_DEBUGGING
+extern void __key_check(const struct key *);
+
+static inline void key_check(const struct key *key)
+{
+	if (key && (IS_ERR(key) || key->magic != KEY_DEBUG_MAGIC))
+		__key_check(key);
+}
+
+#else
+
+#define key_check(key) do {} while(0)
+
+#endif
+
+#endif /* _INTERNAL_H */

extra/linux-2.6.10/security/keys/keyctl.c

@@ -0,0 +1,987 @@
+/* keyctl.c: userspace keyctl operations
+ *
+ * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/syscalls.h>
+#include <linux/keyctl.h>
+#include <linux/fs.h>
+#include <linux/err.h>
+#include <asm/uaccess.h>
+#include "internal.h"
+
+/*****************************************************************************/
+/*
+ * extract the description of a new key from userspace and either add it as a
+ * new key to the specified keyring or update a matching key in that keyring
+ * - the keyring must be writable
+ * - returns the new key's serial number
+ * - implements add_key()
+ */
+asmlinkage long sys_add_key(const char __user *_type,
+			    const char __user *_description,
+			    const void __user *_payload,
+			    size_t plen,
+			    key_serial_t ringid)
+{
+	struct key *keyring, *key;
+	char type[32], *description;
+	void *payload;
+	long dlen, ret;
+
+	ret = -EINVAL;
+	if (plen > 32767)
+		goto error;
+
+	/* draw all the data into kernel space */
+	ret = strncpy_from_user(type, _type, sizeof(type) - 1);
+	if (ret < 0)
+		goto error;
+	type[31] = '\0';
+
+	ret = -EFAULT;
+	dlen = strnlen_user(_description, PAGE_SIZE - 1);
+	if (dlen <= 0)
+		goto error;
+
+	ret = -EINVAL;
+	if (dlen > PAGE_SIZE - 1)
+		goto error;
+
+	ret = -ENOMEM;
+	description = kmalloc(dlen + 1, GFP_KERNEL);
+	if (!description)
+		goto error;
+
+	ret = -EFAULT;
+	if (copy_from_user(description, _description, dlen + 1) != 0)
+		goto error2;
+
+	/* pull the payload in if one was supplied */
+	payload = NULL;
+
+	if (_payload) {
+		ret = -ENOMEM;
+		payload = kmalloc(plen, GFP_KERNEL);
+		if (!payload)
+			goto error2;
+
+		ret = -EFAULT;
+		if (copy_from_user(payload, _payload, plen) != 0)
+			goto error3;
+	}
+
+	/* find the target keyring (which must be writable) */
+	keyring = lookup_user_key(ringid, 1, 0, KEY_WRITE);
+	if (IS_ERR(keyring)) {
+		ret = PTR_ERR(keyring);
+		goto error3;
+	}
+
+	/* create or update the requested key and add it to the target
+	 * keyring */
+	key = key_create_or_update(keyring, type, description,
+				   payload, plen, 0);
+	if (!IS_ERR(key)) {
+		ret = key->serial;
+		key_put(key);
+	}
+	else {
+		ret = PTR_ERR(key);
+	}
+
+	key_put(keyring);
+ error3:
+	kfree(payload);
+ error2:
+	kfree(description);
+ error:
+	return ret;
+
+} /* end sys_add_key() */
+
+/*****************************************************************************/
+/*
+ * search the process keyrings for a matching key
+ * - nested keyrings may also be searched if they have Search permission
+ * - if a key is found, it will be attached to the destination keyring if
+ *   there's one specified
+ * - /sbin/request-key will be invoked if _callout_info is non-NULL
+ *   - the _callout_info string will be passed to /sbin/request-key
+ *   - if the _callout_info string is empty, it will be rendered as "-"
+ * - implements request_key()
+ */
+asmlinkage long sys_request_key(const char __user *_type,
+				const char __user *_description,
+				const char __user *_callout_info,
+				key_serial_t destringid)
+{
+	struct key_type *ktype;
+	struct key *key, *dest;
+	char type[32], *description, *callout_info;
+	long dlen, ret;
+
+	/* pull the type into kernel space */
+	ret = strncpy_from_user(type, _type, sizeof(type) - 1);
+	if (ret < 0)
+		goto error;
+	type[31] = '\0';
+
+	/* pull the description into kernel space */
+	ret = -EFAULT;
+	dlen = strnlen_user(_description, PAGE_SIZE - 1);
+	if (dlen <= 0)
+		goto error;
+
+	ret = -EINVAL;
+	if (dlen > PAGE_SIZE - 1)
+		goto error;
+
+	ret = -ENOMEM;
+	description = kmalloc(dlen + 1, GFP_KERNEL);
+	if (!description)
+		goto error;
+
+	ret = -EFAULT;
+	if (copy_from_user(description, _description, dlen + 1) != 0)
+		goto error2;
+
+	/* pull the callout info into kernel space */
+	callout_info = NULL;
+	if (_callout_info) {
+		ret = -EFAULT;
+		dlen = strnlen_user(_callout_info, PAGE_SIZE - 1);
+		if (dlen <= 0)
+			goto error2;
+
+		ret = -EINVAL;
+		if (dlen > PAGE_SIZE - 1)
+			goto error2;
+
+		ret = -ENOMEM;
+		callout_info = kmalloc(dlen + 1, GFP_KERNEL);
+		if (!callout_info)
+			goto error2;
+
+		ret = -EFAULT;
+		if (copy_from_user(callout_info, _callout_info, dlen + 1) != 0)
+			goto error3;
+	}
+
+	/* get the destination keyring if specified */
+	dest = NULL;
+	if (destringid) {
+		dest = lookup_user_key(destringid, 1, 0, KEY_WRITE);
+		if (IS_ERR(dest)) {
+			ret = PTR_ERR(dest);
+			goto error3;
+		}
+	}
+
+	/* find the key type */
+	ktype = key_type_lookup(type);
+	if (IS_ERR(ktype)) {
+		ret = PTR_ERR(ktype);
+		goto error4;
+	}
+
+	/* do the search */
+	key = request_key(ktype, description, callout_info);
+	if (IS_ERR(key)) {
+		ret = PTR_ERR(key);
+		goto error5;
+	}
+
+	/* link the resulting key to the destination keyring */
+	if (dest) {
+		ret = key_link(dest, key);
+		if (ret < 0)
+			goto error6;
+	}
+
+	ret = key->serial;
+
+ error6:
+	key_put(key);
+ error5:
+	key_type_put(ktype);
+ error4:
+	key_put(dest);
+ error3:
+	kfree(callout_info);
+ error2:
+	kfree(description);
+ error:
+	return ret;
+
+} /* end sys_request_key() */
+
+/*****************************************************************************/
+/*
+ * get the ID of the specified process keyring
+ * - the keyring must have search permission to be found
+ * - implements keyctl(KEYCTL_GET_KEYRING_ID)
+ */
+long keyctl_get_keyring_ID(key_serial_t id, int create)
+{
+	struct key *key;
+	long ret;
+
+	key = lookup_user_key(id, create, 0, KEY_SEARCH);
+	if (IS_ERR(key)) {
+		ret = PTR_ERR(key);
+		goto error;
+	}
+
+	ret = key->serial;
+	key_put(key);
+ error:
+	return ret;
+
+} /* end keyctl_get_keyring_ID() */
+
+/*****************************************************************************/
+/*
+ * join the session keyring
+ * - implements keyctl(KEYCTL_JOIN_SESSION_KEYRING)
+ */
+long keyctl_join_session_keyring(const char __user *_name)
+{
+	char *name;
+	long nlen, ret;
+
+	/* fetch the name from userspace */
+	name = NULL;
+	if (_name) {
+		ret = -EFAULT;
+		nlen = strnlen_user(_name, PAGE_SIZE - 1);
+		if (nlen <= 0)
+			goto error;
+
+		ret = -EINVAL;
+		if (nlen > PAGE_SIZE - 1)
+			goto error;
+
+		ret = -ENOMEM;
+		name = kmalloc(nlen + 1, GFP_KERNEL);
+		if (!name)
+			goto error;
+
+		ret = -EFAULT;
+		if (copy_from_user(name, _name, nlen + 1) != 0)
+			goto error2;
+	}
+
+	/* join the session */
+	ret = join_session_keyring(name);
+
+ error2:
+	kfree(name);
+ error:
+	return ret;
+
+} /* end keyctl_join_session_keyring() */
+
+/*****************************************************************************/
+/*
+ * update a key's data payload
+ * - the key must be writable
+ * - implements keyctl(KEYCTL_UPDATE)
+ */
+long keyctl_update_key(key_serial_t id,
+		       const void __user *_payload,
+		       size_t plen)
+{
+	struct key *key;
+	void *payload;
+	long ret;
+
+	ret = -EINVAL;
+	if (plen > PAGE_SIZE)
+		goto error;
+
+	/* pull the payload in if one was supplied */
+	payload = NULL;
+	if (_payload) {
+		ret = -ENOMEM;
+		payload = kmalloc(plen, GFP_KERNEL);
+		if (!payload)
+			goto error;
+
+		ret = -EFAULT;
+		if (copy_from_user(payload, _payload, plen) != 0)
+			goto error2;
+	}
+
+	/* find the target key (which must be writable) */
+	key = lookup_user_key(id, 0, 0, KEY_WRITE);
+	if (IS_ERR(key)) {
+		ret = PTR_ERR(key);
+		goto error2;
+	}
+
+	/* update the key */
+	ret = key_update(key, payload, plen);
+
+	key_put(key);
+ error2:
+	kfree(payload);
+ error:
+	return ret;
+
+} /* end keyctl_update_key() */
+
+/*****************************************************************************/
+/*
+ * revoke a key
+ * - the key must be writable
+ * - implements keyctl(KEYCTL_REVOKE)
+ */
+long keyctl_revoke_key(key_serial_t id)
+{
+	struct key *key;
+	long ret;
+
+	key = lookup_user_key(id, 0, 0, KEY_WRITE);
+	if (IS_ERR(key)) {
+		ret = PTR_ERR(key);
+		goto error;
+	}
+
+	key_revoke(key);
+	ret = 0;
+
+	key_put(key);
+ error:
+	return 0;
+
+} /* end keyctl_revoke_key() */
+
+/*****************************************************************************/
+/*
+ * clear the specified process keyring
+ * - the keyring must be writable
+ * - implements keyctl(KEYCTL_CLEAR)
+ */
+long keyctl_keyring_clear(key_serial_t ringid)
+{
+	struct key *keyring;
+	long ret;
+
+	keyring = lookup_user_key(ringid, 1, 0, KEY_WRITE);
+	if (IS_ERR(keyring)) {
+		ret = PTR_ERR(keyring);
+		goto error;
+	}
+
+	ret = keyring_clear(keyring);
+
+	key_put(keyring);
+ error:
+	return ret;
+
+} /* end keyctl_keyring_clear() */
+
+/*****************************************************************************/
+/*
+ * link a key into a keyring
+ * - the keyring must be writable
+ * - the key must be linkable
+ * - implements keyctl(KEYCTL_LINK)
+ */
+long keyctl_keyring_link(key_serial_t id, key_serial_t ringid)
+{
+	struct key *keyring, *key;
+	long ret;
+
+	keyring = lookup_user_key(ringid, 1, 0, KEY_WRITE);
+	if (IS_ERR(keyring)) {
+		ret = PTR_ERR(keyring);
+		goto error;
+	}
+
+	key = lookup_user_key(id, 1, 0, KEY_LINK);
+	if (IS_ERR(key)) {
+		ret = PTR_ERR(key);
+		goto error2;
+	}
+
+	ret = key_link(keyring, key);
+
+	key_put(key);
+ error2:
+	key_put(keyring);
+ error:
+	return ret;
+
+} /* end keyctl_keyring_link() */
+
+/*****************************************************************************/
+/*
+ * unlink the first attachment of a key from a keyring
+ * - the keyring must be writable
+ * - we don't need any permissions on the key
+ * - implements keyctl(KEYCTL_UNLINK)
+ */
+long keyctl_keyring_unlink(key_serial_t id, key_serial_t ringid)
+{
+	struct key *keyring, *key;
+	long ret;
+
+	keyring = lookup_user_key(ringid, 0, 0, KEY_WRITE);
+	if (IS_ERR(keyring)) {
+		ret = PTR_ERR(keyring);
+		goto error;
+	}
+
+	key = lookup_user_key(id, 0, 0, 0);
+	if (IS_ERR(key)) {
+		ret = PTR_ERR(key);
+		goto error2;
+	}
+
+	ret = key_unlink(keyring, key);
+
+	key_put(key);
+ error2:
+	key_put(keyring);
+ error:
+	return ret;
+
+} /* end keyctl_keyring_unlink() */
+
+/*****************************************************************************/
+/*
+ * describe a user key
+ * - the key must have view permission
+ * - if there's a buffer, we place up to buflen bytes of data into it
+ * - unless there's an error, we return the amount of description available,
+ *   irrespective of how much we may have copied
+ * - the description is formatted thus:
+ *	type;uid;gid;perm;description<NUL>
+ * - implements keyctl(KEYCTL_DESCRIBE)
+ */
+long keyctl_describe_key(key_serial_t keyid,
+			 char __user *buffer,
+			 size_t buflen)
+{
+	struct key *key;
+	char *tmpbuf;
+	long ret;
+
+	key = lookup_user_key(keyid, 0, 1, KEY_VIEW);
+	if (IS_ERR(key)) {
+		ret = PTR_ERR(key);
+		goto error;
+	}
+
+	/* calculate how much description we're going to return */
+	ret = -ENOMEM;
+	tmpbuf = kmalloc(PAGE_SIZE, GFP_KERNEL);
+	if (!tmpbuf)
+		goto error2;
+
+	ret = snprintf(tmpbuf, PAGE_SIZE - 1,
+		       "%s;%d;%d;%06x;%s",
+		       key->type->name,
+		       key->uid,
+		       key->gid,
+		       key->perm,
+		       key->description ? key->description :""
+		       );
+
+	/* include a NUL char at the end of the data */
+	if (ret > PAGE_SIZE - 1)
+		ret = PAGE_SIZE - 1;
+	tmpbuf[ret] = 0;
+	ret++;
+
+	/* consider returning the data */
+	if (buffer && buflen > 0) {
+		if (buflen > ret)
+			buflen = ret;
+
+		if (copy_to_user(buffer, tmpbuf, buflen) != 0)
+			ret = -EFAULT;
+	}
+
+	kfree(tmpbuf);
+ error2:
+	key_put(key);
+ error:
+	return ret;
+
+} /* end keyctl_describe_key() */
+
+/*****************************************************************************/
+/*
+ * search the specified keyring for a matching key
+ * - the start keyring must be searchable
+ * - nested keyrings may also be searched if they are searchable
+ * - only keys with search permission may be found
+ * - if a key is found, it will be attached to the destination keyring if
+ *   there's one specified
+ * - implements keyctl(KEYCTL_SEARCH)
+ */
+long keyctl_keyring_search(key_serial_t ringid,
+			   const char __user *_type,
+			   const char __user *_description,
+			   key_serial_t destringid)
+{
+	struct key_type *ktype;
+	struct key *keyring, *key, *dest;
+	char type[32], *description;
+	long dlen, ret;
+
+	/* pull the type and description into kernel space */
+	ret = strncpy_from_user(type, _type, sizeof(type) - 1);
+	if (ret < 0)
+		goto error;
+	type[31] = '\0';
+
+	ret = -EFAULT;
+	dlen = strnlen_user(_description, PAGE_SIZE - 1);
+	if (dlen <= 0)
+		goto error;
+
+	ret = -EINVAL;
+	if (dlen > PAGE_SIZE - 1)
+		goto error;
+
+	ret = -ENOMEM;
+	description = kmalloc(dlen + 1, GFP_KERNEL);
+	if (!description)
+		goto error;
+
+	ret = -EFAULT;
+	if (copy_from_user(description, _description, dlen + 1) != 0)
+		goto error2;
+
+	/* get the keyring at which to begin the search */
+	keyring = lookup_user_key(ringid, 0, 0, KEY_SEARCH);
+	if (IS_ERR(keyring)) {
+		ret = PTR_ERR(keyring);
+		goto error2;
+	}
+
+	/* get the destination keyring if specified */
+	dest = NULL;
+	if (destringid) {
+		dest = lookup_user_key(destringid, 1, 0, KEY_WRITE);
+		if (IS_ERR(dest)) {
+			ret = PTR_ERR(dest);
+			goto error3;
+		}
+	}
+
+	/* find the key type */
+	ktype = key_type_lookup(type);
+	if (IS_ERR(ktype)) {
+		ret = PTR_ERR(ktype);
+		goto error4;
+	}
+
+	/* do the search */
+	key = keyring_search(keyring, ktype, description);
+	if (IS_ERR(key)) {
+		ret = PTR_ERR(key);
+
+		/* treat lack or presence of a negative key the same */
+		if (ret == -EAGAIN)
+			ret = -ENOKEY;
+		goto error5;
+	}
+
+	/* link the resulting key to the destination keyring if we can */
+	if (dest) {
+		ret = -EACCES;
+		if (!key_permission(key, KEY_LINK))
+			goto error6;
+
+		ret = key_link(dest, key);
+		if (ret < 0)
+			goto error6;
+	}
+
+	ret = key->serial;
+
+ error6:
+	key_put(key);
+ error5:
+	key_type_put(ktype);
+ error4:
+	key_put(dest);
+ error3:
+	key_put(keyring);
+ error2:
+	kfree(description);
+ error:
+	return ret;
+
+} /* end keyctl_keyring_search() */
+
+/*****************************************************************************/
+/*
+ * see if the key we're looking at is the target key
+ */
+static int keyctl_read_key_same(const struct key *key, const void *target)
+{
+	return key == target;
+
+} /* end keyctl_read_key_same() */
+
+/*****************************************************************************/
+/*
+ * read a user key's payload
+ * - the keyring must be readable or the key must be searchable from the
+ *   process's keyrings
+ * - if there's a buffer, we place up to buflen bytes of data into it
+ * - unless there's an error, we return the amount of data in the key,
+ *   irrespective of how much we may have copied
+ * - implements keyctl(KEYCTL_READ)
+ */
+long keyctl_read_key(key_serial_t keyid, char __user *buffer, size_t buflen)
+{
+	struct key *key, *skey;
+	long ret;
+
+	/* find the key first */
+	key = lookup_user_key(keyid, 0, 0, 0);
+	if (!IS_ERR(key)) {
+		/* see if we can read it directly */
+		if (key_permission(key, KEY_READ))
+			goto can_read_key;
+
+		/* can't; see if it's searchable from this process's
+		 * keyrings */
+		ret = -ENOKEY;
+		if (key_permission(key, KEY_SEARCH)) {
+			/* okay - we do have search permission on the key
+			 * itself, but do we have the key? */
+			skey = search_process_keyrings_aux(key->type, key,
+							   keyctl_read_key_same);
+			if (!IS_ERR(skey))
+				goto can_read_key2;
+		}
+
+		goto error2;
+	}
+
+	ret = -ENOKEY;
+	goto error;
+
+	/* the key is probably readable - now try to read it */
+ can_read_key2:
+	key_put(skey);
+ can_read_key:
+	ret = key_validate(key);
+	if (ret == 0) {
+		ret = -EOPNOTSUPP;
+		if (key->type->read) {
+			/* read the data with the semaphore held (since we
+			 * might sleep) */
+			down_read(&key->sem);
+			ret = key->type->read(key, buffer, buflen);
+			up_read(&key->sem);
+		}
+	}
+
+ error2:
+	key_put(key);
+ error:
+	return ret;
+
+} /* end keyctl_read_key() */
+
+/*****************************************************************************/
+/*
+ * change the ownership of a key
+ * - the keyring owned by the changer
+ * - if the uid or gid is -1, then that parameter is not changed
+ * - implements keyctl(KEYCTL_CHOWN)
+ */
+long keyctl_chown_key(key_serial_t id, uid_t uid, gid_t gid)
+{
+	struct key *key;
+	long ret;
+
+	ret = 0;
+	if (uid == (uid_t) -1 && gid == (gid_t) -1)
+		goto error;
+
+	key = lookup_user_key(id, 1, 1, 0);
+	if (IS_ERR(key)) {
+		ret = PTR_ERR(key);
+		goto error;
+	}
+
+	/* make the changes with the locks held to prevent chown/chown races */
+	ret = -EACCES;
+	down_write(&key->sem);
+	write_lock(&key->lock);
+
+	if (!capable(CAP_SYS_ADMIN)) {
+		/* only the sysadmin can chown a key to some other UID */
+		if (uid != (uid_t) -1 && key->uid != uid)
+			goto no_access;
+
+		/* only the sysadmin can set the key's GID to a group other
+		 * than one of those that the current process subscribes to */
+		if (gid != (gid_t) -1 && gid != key->gid && !in_group_p(gid))
+			goto no_access;
+	}
+
+	/* change the UID (have to update the quotas) */
+	if (uid != (uid_t) -1 && uid != key->uid) {
+		/* don't support UID changing yet */
+		ret = -EOPNOTSUPP;
+		goto no_access;
+	}
+
+	/* change the GID */
+	if (gid != (gid_t) -1)
+		key->gid = gid;
+
+	ret = 0;
+
+ no_access:
+	write_unlock(&key->lock);
+	up_write(&key->sem);
+	key_put(key);
+ error:
+	return ret;
+
+} /* end keyctl_chown_key() */
+
+/*****************************************************************************/
+/*
+ * change the permission mask on a key
+ * - the keyring owned by the changer
+ * - implements keyctl(KEYCTL_SETPERM)
+ */
+long keyctl_setperm_key(key_serial_t id, key_perm_t perm)
+{
+	struct key *key;
+	long ret;
+
+	ret = -EINVAL;
+	if (perm & ~(KEY_USR_ALL | KEY_GRP_ALL | KEY_OTH_ALL))
+		goto error;
+
+	key = lookup_user_key(id, 1, 1, 0);
+	if (IS_ERR(key)) {
+		ret = PTR_ERR(key);
+		goto error;
+	}
+
+	/* make the changes with the locks held to prevent chown/chmod
+	 * races */
+	ret = -EACCES;
+	down_write(&key->sem);
+	write_lock(&key->lock);
+
+	/* if we're not the sysadmin, we can only chmod a key that we
+	 * own */
+	if (!capable(CAP_SYS_ADMIN) && key->uid != current->fsuid)
+		goto no_access;
+
+	/* changing the permissions mask */
+	key->perm = perm;
+	ret = 0;
+
+ no_access:
+	write_unlock(&key->lock);
+	up_write(&key->sem);
+	key_put(key);
+ error:
+	return ret;
+
+} /* end keyctl_setperm_key() */
+
+/*****************************************************************************/
+/*
+ * instantiate the key with the specified payload, and, if one is given, link
+ * the key into the keyring
+ */
+long keyctl_instantiate_key(key_serial_t id,
+			    const void __user *_payload,
+			    size_t plen,
+			    key_serial_t ringid)
+{
+	struct key *key, *keyring;
+	void *payload;
+	long ret;
+
+	ret = -EINVAL;
+	if (plen > 32767)
+		goto error;
+
+	/* pull the payload in if one was supplied */
+	payload = NULL;
+
+	if (_payload) {
+		ret = -ENOMEM;
+		payload = kmalloc(plen, GFP_KERNEL);
+		if (!payload)
+			goto error;
+
+		ret = -EFAULT;
+		if (copy_from_user(payload, _payload, plen) != 0)
+			goto error2;
+	}
+
+	/* find the target key (which must be writable) */
+	key = lookup_user_key(id, 0, 1, KEY_WRITE);
+	if (IS_ERR(key)) {
+		ret = PTR_ERR(key);
+		goto error2;
+	}
+
+	/* find the destination keyring if present (which must also be
+	 * writable) */
+	keyring = NULL;
+	if (ringid) {
+		keyring = lookup_user_key(ringid, 1, 0, KEY_WRITE);
+		if (IS_ERR(keyring)) {
+			ret = PTR_ERR(keyring);
+			goto error3;
+		}
+	}
+
+	/* instantiate the key and link it into a keyring */
+	ret = key_instantiate_and_link(key, payload, plen, keyring);
+
+	key_put(keyring);
+ error3:
+	key_put(key);
+ error2:
+	kfree(payload);
+ error:
+	return ret;
+
+} /* end keyctl_instantiate_key() */
+
+/*****************************************************************************/
+/*
+ * negatively instantiate the key with the given timeout (in seconds), and, if
+ * one is given, link the key into the keyring
+ */
+long keyctl_negate_key(key_serial_t id, unsigned timeout, key_serial_t ringid)
+{
+	struct key *key, *keyring;
+	long ret;
+
+	/* find the target key (which must be writable) */
+	key = lookup_user_key(id, 0, 1, KEY_WRITE);
+	if (IS_ERR(key)) {
+		ret = PTR_ERR(key);
+		goto error;
+	}
+
+	/* find the destination keyring if present (which must also be
+	 * writable) */
+	keyring = NULL;
+	if (ringid) {
+		keyring = lookup_user_key(ringid, 1, 0, KEY_WRITE);
+		if (IS_ERR(keyring)) {
+			ret = PTR_ERR(keyring);
+			goto error2;
+		}
+	}
+
+	/* instantiate the key and link it into a keyring */
+	ret = key_negate_and_link(key, timeout, keyring);
+
+	key_put(keyring);
+ error2:
+	key_put(key);
+ error:
+	return ret;
+
+} /* end keyctl_negate_key() */
+
+/*****************************************************************************/
+/*
+ * the key control system call
+ */
+asmlinkage long sys_keyctl(int option, unsigned long arg2, unsigned long arg3,
+			   unsigned long arg4, unsigned long arg5)
+{
+	switch (option) {
+	case KEYCTL_GET_KEYRING_ID:
+		return keyctl_get_keyring_ID((key_serial_t) arg2,
+					     (int) arg3);
+
+	case KEYCTL_JOIN_SESSION_KEYRING:
+		return keyctl_join_session_keyring((const char __user *) arg3);
+
+	case KEYCTL_UPDATE:
+		return keyctl_update_key((key_serial_t) arg2,
+					 (const void __user *) arg3,
+					 (size_t) arg4);
+
+	case KEYCTL_REVOKE:
+		return keyctl_revoke_key((key_serial_t) arg2);
+
+	case KEYCTL_DESCRIBE:
+		return keyctl_describe_key((key_serial_t) arg2,
+					   (char __user *) arg3,
+					   (unsigned) arg4);
+
+	case KEYCTL_CLEAR:
+		return keyctl_keyring_clear((key_serial_t) arg2);
+
+	case KEYCTL_LINK:
+		return keyctl_keyring_link((key_serial_t) arg2,
+					   (key_serial_t) arg3);
+
+	case KEYCTL_UNLINK:
+		return keyctl_keyring_unlink((key_serial_t) arg2,
+					     (key_serial_t) arg3);
+
+	case KEYCTL_SEARCH:
+		return keyctl_keyring_search((key_serial_t) arg2,
+					     (const char __user *) arg3,
+					     (const char __user *) arg4,
+					     (key_serial_t) arg5);
+
+	case KEYCTL_READ:
+		return keyctl_read_key((key_serial_t) arg2,
+				       (char __user *) arg3,
+				       (size_t) arg4);
+
+	case KEYCTL_CHOWN:
+		return keyctl_chown_key((key_serial_t) arg2,
+					(uid_t) arg3,
+					(gid_t) arg4);
+
+	case KEYCTL_SETPERM:
+		return keyctl_setperm_key((key_serial_t) arg2,
+					  (key_perm_t) arg3);
+
+	case KEYCTL_INSTANTIATE:
+		return keyctl_instantiate_key((key_serial_t) arg2,
+					      (const void __user *) arg3,
+					      (size_t) arg4,
+					      (key_serial_t) arg5);
+
+	case KEYCTL_NEGATE:
+		return keyctl_negate_key((key_serial_t) arg2,
+					 (unsigned) arg3,
+					 (key_serial_t) arg4);
+
+	default:
+		return -EOPNOTSUPP;
+	}
+
+} /* end sys_keyctl() */

extra/linux-2.6.10/security/keys/keyring.c

@@ -0,0 +1,895 @@
+/* keyring.c: keyring handling
+ *
+ * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/seq_file.h>
+#include <linux/err.h>
+#include <asm/uaccess.h>
+#include "internal.h"
+
+/*
+ * when plumbing the depths of the key tree, this sets a hard limit set on how
+ * deep we're willing to go
+ */
+#define KEYRING_SEARCH_MAX_DEPTH 6
+
+/*
+ * we keep all named keyrings in a hash to speed looking them up
+ */
+#define KEYRING_NAME_HASH_SIZE	(1 << 5)
+
+static struct list_head	keyring_name_hash[KEYRING_NAME_HASH_SIZE];
+static rwlock_t		keyring_name_lock = RW_LOCK_UNLOCKED;
+
+static inline unsigned keyring_hash(const char *desc)
+{
+	unsigned bucket = 0;
+
+	for (; *desc; desc++)
+		bucket += (unsigned char) *desc;
+
+	return bucket & (KEYRING_NAME_HASH_SIZE - 1);
+}
+
+/*
+ * the keyring type definition
+ */
+static int keyring_instantiate(struct key *keyring,
+			       const void *data, size_t datalen);
+static int keyring_duplicate(struct key *keyring, const struct key *source);
+static int keyring_match(const struct key *keyring, const void *criterion);
+static void keyring_destroy(struct key *keyring);
+static void keyring_describe(const struct key *keyring, struct seq_file *m);
+static long keyring_read(const struct key *keyring,
+			 char __user *buffer, size_t buflen);
+
+struct key_type key_type_keyring = {
+	.name		= "keyring",
+	.def_datalen	= sizeof(struct keyring_list),
+	.instantiate	= keyring_instantiate,
+	.duplicate	= keyring_duplicate,
+	.match		= keyring_match,
+	.destroy	= keyring_destroy,
+	.describe	= keyring_describe,
+	.read		= keyring_read,
+};
+
+/*
+ * semaphore to serialise link/link calls to prevent two link calls in parallel
+ * introducing a cycle
+ */
+DECLARE_RWSEM(keyring_serialise_link_sem);
+
+/*****************************************************************************/
+/*
+ * publish the name of a keyring so that it can be found by name (if it has
+ * one)
+ */
+void keyring_publish_name(struct key *keyring)
+{
+	int bucket;
+
+	if (keyring->description) {
+		bucket = keyring_hash(keyring->description);
+
+		write_lock(&keyring_name_lock);
+
+		if (!keyring_name_hash[bucket].next)
+			INIT_LIST_HEAD(&keyring_name_hash[bucket]);
+
+		list_add_tail(&keyring->type_data.link,
+			      &keyring_name_hash[bucket]);
+
+		write_unlock(&keyring_name_lock);
+	}
+
+} /* end keyring_publish_name() */
+
+/*****************************************************************************/
+/*
+ * initialise a keyring
+ * - we object if we were given any data
+ */
+static int keyring_instantiate(struct key *keyring,
+			       const void *data, size_t datalen)
+{
+	int ret;
+
+	ret = -EINVAL;
+	if (datalen == 0) {
+		/* make the keyring available by name if it has one */
+		keyring_publish_name(keyring);
+		ret = 0;
+	}
+
+	return ret;
+
+} /* end keyring_instantiate() */
+
+/*****************************************************************************/
+/*
+ * duplicate the list of subscribed keys from a source keyring into this one
+ */
+static int keyring_duplicate(struct key *keyring, const struct key *source)
+{
+	struct keyring_list *sklist, *klist;
+	unsigned max;
+	size_t size;
+	int loop, ret;
+
+	const unsigned limit =
+		(PAGE_SIZE - sizeof(*klist)) / sizeof(struct key);
+
+	ret = 0;
+	sklist = source->payload.subscriptions;
+
+	if (sklist && sklist->nkeys > 0) {
+		max = sklist->nkeys;
+		BUG_ON(max > limit);
+
+		max = (max + 3) & ~3;
+		if (max > limit)
+			max = limit;
+
+		ret = -ENOMEM;
+		size = sizeof(*klist) + sizeof(struct key) * max;
+		klist = kmalloc(size, GFP_KERNEL);
+		if (!klist)
+			goto error;
+
+		klist->maxkeys = max;
+		klist->nkeys = sklist->nkeys;
+		memcpy(klist->keys,
+		       sklist->keys,
+		       sklist->nkeys * sizeof(struct key));
+
+		for (loop = klist->nkeys - 1; loop >= 0; loop--)
+			atomic_inc(&klist->keys[loop]->usage);
+
+		keyring->payload.subscriptions = klist;
+		ret = 0;
+	}
+
+ error:
+	return ret;
+
+} /* end keyring_duplicate() */
+
+/*****************************************************************************/
+/*
+ * match keyrings on their name
+ */
+static int keyring_match(const struct key *keyring, const void *description)
+{
+	return keyring->description &&
+		strcmp(keyring->description, description) == 0;
+
+} /* end keyring_match() */
+
+/*****************************************************************************/
+/*
+ * dispose of the data dangling from the corpse of a keyring
+ */
+static void keyring_destroy(struct key *keyring)
+{
+	struct keyring_list *klist;
+	int loop;
+
+	if (keyring->description) {
+		write_lock(&keyring_name_lock);
+		list_del(&keyring->type_data.link);
+		write_unlock(&keyring_name_lock);
+	}
+
+	klist = keyring->payload.subscriptions;
+	if (klist) {
+		for (loop = klist->nkeys - 1; loop >= 0; loop--)
+			key_put(klist->keys[loop]);
+		kfree(klist);
+	}
+
+} /* end keyring_destroy() */
+
+/*****************************************************************************/
+/*
+ * describe the keyring
+ */
+static void keyring_describe(const struct key *keyring, struct seq_file *m)
+{
+	struct keyring_list *klist;
+
+	if (keyring->description) {
+		seq_puts(m, keyring->description);
+	}
+	else {
+		seq_puts(m, "[anon]");
+	}
+
+	klist = keyring->payload.subscriptions;
+	if (klist)
+		seq_printf(m, ": %u/%u", klist->nkeys, klist->maxkeys);
+	else
+		seq_puts(m, ": empty");
+
+} /* end keyring_describe() */
+
+/*****************************************************************************/
+/*
+ * read a list of key IDs from the keyring's contents
+ */
+static long keyring_read(const struct key *keyring,
+			 char __user *buffer, size_t buflen)
+{
+	struct keyring_list *klist;
+	struct key *key;
+	size_t qty, tmp;
+	int loop, ret;
+
+	ret = 0;
+	klist = keyring->payload.subscriptions;
+
+	if (klist) {
+		/* calculate how much data we could return */
+		qty = klist->nkeys * sizeof(key_serial_t);
+
+		if (buffer && buflen > 0) {
+			if (buflen > qty)
+				buflen = qty;
+
+			/* copy the IDs of the subscribed keys into the
+			 * buffer */
+			ret = -EFAULT;
+
+			for (loop = 0; loop < klist->nkeys; loop++) {
+				key = klist->keys[loop];
+
+				tmp = sizeof(key_serial_t);
+				if (tmp > buflen)
+					tmp = buflen;
+
+				if (copy_to_user(buffer,
+						 &key->serial,
+						 tmp) != 0)
+					goto error;
+
+				buflen -= tmp;
+				if (buflen == 0)
+					break;
+				buffer += tmp;
+			}
+		}
+
+		ret = qty;
+	}
+
+ error:
+	return ret;
+
+} /* end keyring_read() */
+
+/*****************************************************************************/
+/*
+ * allocate a keyring and link into the destination keyring
+ */
+struct key *keyring_alloc(const char *description, uid_t uid, gid_t gid,
+			  int not_in_quota, struct key *dest)
+{
+	struct key *keyring;
+	int ret;
+
+	keyring = key_alloc(&key_type_keyring, description,
+			    uid, gid, KEY_USR_ALL, not_in_quota);
+
+	if (!IS_ERR(keyring)) {
+		ret = key_instantiate_and_link(keyring, NULL, 0, dest);
+		if (ret < 0) {
+			key_put(keyring);
+			keyring = ERR_PTR(ret);
+		}
+	}
+
+	return keyring;
+
+} /* end keyring_alloc() */
+
+/*****************************************************************************/
+/*
+ * search the supplied keyring tree for a key that matches the criterion
+ * - perform a breadth-then-depth search up to the prescribed limit
+ * - we only find keys on which we have search permission
+ * - we use the supplied match function to see if the description (or other
+ *   feature of interest) matches
+ * - we readlock the keyrings as we search down the tree
+ * - we return -EAGAIN if we didn't find any matching key
+ * - we return -ENOKEY if we only found negative matching keys
+ */
+struct key *keyring_search_aux(struct key *keyring,
+			       struct key_type *type,
+			       const void *description,
+			       key_match_func_t match)
+{
+	struct {
+		struct key *keyring;
+		int kix;
+	} stack[KEYRING_SEARCH_MAX_DEPTH];
+
+	struct keyring_list *keylist;
+	struct timespec now;
+	struct key *key;
+	long err;
+	int sp, psp, kix;
+
+	key_check(keyring);
+
+	/* top keyring must have search permission to begin the search */
+	key = ERR_PTR(-EACCES);
+	if (!key_permission(keyring, KEY_SEARCH))
+		goto error;
+
+	key = ERR_PTR(-ENOTDIR);
+	if (keyring->type != &key_type_keyring)
+		goto error;
+
+	now = current_kernel_time();
+	err = -EAGAIN;
+	sp = 0;
+
+	/* start processing a new keyring */
+ descend:
+	read_lock(&keyring->lock);
+	if (keyring->flags & KEY_FLAG_REVOKED)
+		goto not_this_keyring;
+
+	keylist = keyring->payload.subscriptions;
+	if (!keylist)
+		goto not_this_keyring;
+
+	/* iterate through the keys in this keyring first */
+	for (kix = 0; kix < keylist->nkeys; kix++) {
+		key = keylist->keys[kix];
+
+		/* ignore keys not of this type */
+		if (key->type != type)
+			continue;
+
+		/* skip revoked keys and expired keys */
+		if (key->flags & KEY_FLAG_REVOKED)
+			continue;
+
+		if (key->expiry && now.tv_sec >= key->expiry)
+			continue;
+
+		/* keys that don't match */
+		if (!match(key, description))
+			continue;
+
+		/* key must have search permissions */
+		if (!key_permission(key, KEY_SEARCH))
+			continue;
+
+		/* we set a different error code if we find a negative key */
+		if (key->flags & KEY_FLAG_NEGATIVE) {
+			err = -ENOKEY;
+			continue;
+		}
+
+		goto found;
+	}
+
+	/* search through the keyrings nested in this one */
+	kix = 0;
+ ascend:
+	while (kix < keylist->nkeys) {
+		key = keylist->keys[kix];
+		if (key->type != &key_type_keyring)
+			goto next;
+
+		/* recursively search nested keyrings
+		 * - only search keyrings for which we have search permission
+		 */
+		if (sp >= KEYRING_SEARCH_MAX_DEPTH)
+			goto next;
+
+		if (!key_permission(key, KEY_SEARCH))
+			goto next;
+
+		/* evade loops in the keyring tree */
+		for (psp = 0; psp < sp; psp++)
+			if (stack[psp].keyring == keyring)
+				goto next;
+
+		/* stack the current position */
+		stack[sp].keyring = keyring;
+		stack[sp].kix = kix;
+		sp++;
+
+		/* begin again with the new keyring */
+		keyring = key;
+		goto descend;
+
+	next:
+		kix++;
+	}
+
+	/* the keyring we're looking at was disqualified or didn't contain a
+	 * matching key */
+ not_this_keyring:
+	read_unlock(&keyring->lock);
+
+	if (sp > 0) {
+		/* resume the processing of a keyring higher up in the tree */
+		sp--;
+		keyring = stack[sp].keyring;
+		keylist = keyring->payload.subscriptions;
+		kix = stack[sp].kix + 1;
+		goto ascend;
+	}
+
+	key = ERR_PTR(err);
+	goto error;
+
+	/* we found a viable match */
+ found:
+	atomic_inc(&key->usage);
+	read_unlock(&keyring->lock);
+
+	/* unwind the keyring stack */
+	while (sp > 0) {
+		sp--;
+		read_unlock(&stack[sp].keyring->lock);
+	}
+
+	key_check(key);
+ error:
+	return key;
+
+} /* end keyring_search_aux() */
+
+/*****************************************************************************/
+/*
+ * search the supplied keyring tree for a key that matches the criterion
+ * - perform a breadth-then-depth search up to the prescribed limit
+ * - we only find keys on which we have search permission
+ * - we readlock the keyrings as we search down the tree
+ * - we return -EAGAIN if we didn't find any matching key
+ * - we return -ENOKEY if we only found negative matching keys
+ */
+struct key *keyring_search(struct key *keyring,
+			   struct key_type *type,
+			   const char *description)
+{
+	return keyring_search_aux(keyring, type, description, type->match);
+
+} /* end keyring_search() */
+
+EXPORT_SYMBOL(keyring_search);
+
+/*****************************************************************************/
+/*
+ * search the given keyring only (no recursion)
+ * - keyring must be locked by caller
+ */
+struct key *__keyring_search_one(struct key *keyring,
+				 const struct key_type *ktype,
+				 const char *description,
+				 key_perm_t perm)
+{
+	struct keyring_list *klist;
+	struct key *key;
+	int loop;
+
+	klist = keyring->payload.subscriptions;
+	if (klist) {
+		for (loop = 0; loop < klist->nkeys; loop++) {
+			key = klist->keys[loop];
+
+			if (key->type == ktype &&
+			    key->type->match(key, description) &&
+			    key_permission(key, perm) &&
+			    !(key->flags & KEY_FLAG_REVOKED)
+			    )
+				goto found;
+		}
+	}
+
+	key = ERR_PTR(-ENOKEY);
+	goto error;
+
+ found:
+	atomic_inc(&key->usage);
+ error:
+	return key;
+
+} /* end __keyring_search_one() */
+
+/*****************************************************************************/
+/*
+ * find a keyring with the specified name
+ * - all named keyrings are searched
+ * - only find keyrings with search permission for the process
+ * - only find keyrings with a serial number greater than the one specified
+ */
+struct key *find_keyring_by_name(const char *name, key_serial_t bound)
+{
+	struct key *keyring;
+	int bucket;
+
+	keyring = ERR_PTR(-EINVAL);
+	if (!name)
+		goto error;
+
+	bucket = keyring_hash(name);
+
+	read_lock(&keyring_name_lock);
+
+	if (keyring_name_hash[bucket].next) {
+		/* search this hash bucket for a keyring with a matching name
+		 * that's readable and that hasn't been revoked */
+		list_for_each_entry(keyring,
+				    &keyring_name_hash[bucket],
+				    type_data.link
+				    ) {
+			if (keyring->flags & KEY_FLAG_REVOKED)
+				continue;
+
+			if (strcmp(keyring->description, name) != 0)
+				continue;
+
+			if (!key_permission(keyring, KEY_SEARCH))
+				continue;
+
+			/* found a potential candidate, but we still need to
+			 * check the serial number */
+			if (keyring->serial <= bound)
+				continue;
+
+			/* we've got a match */
+			atomic_inc(&keyring->usage);
+			read_unlock(&keyring_name_lock);
+			goto error;
+		}
+	}
+
+	read_unlock(&keyring_name_lock);
+	keyring = ERR_PTR(-ENOKEY);
+
+ error:
+	return keyring;
+
+} /* end find_keyring_by_name() */
+
+/*****************************************************************************/
+/*
+ * see if a cycle will will be created by inserting acyclic tree B in acyclic
+ * tree A at the topmost level (ie: as a direct child of A)
+ * - since we are adding B to A at the top level, checking for cycles should
+ *   just be a matter of seeing if node A is somewhere in tree B
+ */
+static int keyring_detect_cycle(struct key *A, struct key *B)
+{
+	struct {
+		struct key *subtree;
+		int kix;
+	} stack[KEYRING_SEARCH_MAX_DEPTH];
+
+	struct keyring_list *keylist;
+	struct key *subtree, *key;
+	int sp, kix, ret;
+
+	ret = -EDEADLK;
+	if (A == B)
+		goto error;
+
+	subtree = B;
+	sp = 0;
+
+	/* start processing a new keyring */
+ descend:
+	read_lock(&subtree->lock);
+	if (subtree->flags & KEY_FLAG_REVOKED)
+		goto not_this_keyring;
+
+	keylist = subtree->payload.subscriptions;
+	if (!keylist)
+		goto not_this_keyring;
+	kix = 0;
+
+ ascend:
+	/* iterate through the remaining keys in this keyring */
+	for (; kix < keylist->nkeys; kix++) {
+		key = keylist->keys[kix];
+
+		if (key == A)
+			goto cycle_detected;
+
+		/* recursively check nested keyrings */
+		if (key->type == &key_type_keyring) {
+			if (sp >= KEYRING_SEARCH_MAX_DEPTH)
+				goto too_deep;
+
+			/* stack the current position */
+			stack[sp].subtree = subtree;
+			stack[sp].kix = kix;
+			sp++;
+
+			/* begin again with the new keyring */
+			subtree = key;
+			goto descend;
+		}
+	}
+
+	/* the keyring we're looking at was disqualified or didn't contain a
+	 * matching key */
+ not_this_keyring:
+	read_unlock(&subtree->lock);
+
+	if (sp > 0) {
+		/* resume the checking of a keyring higher up in the tree */
+		sp--;
+		subtree = stack[sp].subtree;
+		keylist = subtree->payload.subscriptions;
+		kix = stack[sp].kix + 1;
+		goto ascend;
+	}
+
+	ret = 0; /* no cycles detected */
+
+ error:
+	return ret;
+
+ too_deep:
+	ret = -ELOOP;
+	goto error_unwind;
+ cycle_detected:
+	ret = -EDEADLK;
+ error_unwind:
+	read_unlock(&subtree->lock);
+
+	/* unwind the keyring stack */
+	while (sp > 0) {
+		sp--;
+		read_unlock(&stack[sp].subtree->lock);
+	}
+
+	goto error;
+
+} /* end keyring_detect_cycle() */
+
+/*****************************************************************************/
+/*
+ * link a key into to a keyring
+ * - must be called with the keyring's semaphore held
+ */
+int __key_link(struct key *keyring, struct key *key)
+{
+	struct keyring_list *klist, *nklist;
+	unsigned max;
+	size_t size;
+	int ret;
+
+	ret = -EKEYREVOKED;
+	if (keyring->flags & KEY_FLAG_REVOKED)
+		goto error;
+
+	ret = -ENOTDIR;
+	if (keyring->type != &key_type_keyring)
+		goto error;
+
+	/* serialise link/link calls to prevent parallel calls causing a
+	 * cycle when applied to two keyring in opposite orders */
+	down_write(&keyring_serialise_link_sem);
+
+	/* check that we aren't going to create a cycle adding one keyring to
+	 * another */
+	if (key->type == &key_type_keyring) {
+		ret = keyring_detect_cycle(keyring, key);
+		if (ret < 0)
+			goto error2;
+	}
+
+	/* check that we aren't going to overrun the user's quota */
+	ret = key_payload_reserve(keyring,
+				  keyring->datalen + KEYQUOTA_LINK_BYTES);
+	if (ret < 0)
+		goto error2;
+
+	klist = keyring->payload.subscriptions;
+
+	if (klist && klist->nkeys < klist->maxkeys) {
+		/* there's sufficient slack space to add directly */
+		atomic_inc(&key->usage);
+
+		write_lock(&keyring->lock);
+		klist->keys[klist->nkeys++] = key;
+		write_unlock(&keyring->lock);
+
+		ret = 0;
+	}
+	else {
+		/* grow the key list */
+		max = 4;
+		if (klist)
+			max += klist->maxkeys;
+
+		ret = -ENFILE;
+		size = sizeof(*klist) + sizeof(*key) * max;
+		if (size > PAGE_SIZE)
+			goto error3;
+
+		ret = -ENOMEM;
+		nklist = kmalloc(size, GFP_KERNEL);
+		if (!nklist)
+			goto error3;
+		nklist->maxkeys = max;
+		nklist->nkeys = 0;
+
+		if (klist) {
+			nklist->nkeys = klist->nkeys;
+			memcpy(nklist->keys,
+			       klist->keys,
+			       sizeof(struct key *) * klist->nkeys);
+		}
+
+		/* add the key into the new space */
+		atomic_inc(&key->usage);
+
+		write_lock(&keyring->lock);
+		keyring->payload.subscriptions = nklist;
+		nklist->keys[nklist->nkeys++] = key;
+		write_unlock(&keyring->lock);
+
+		/* dispose of the old keyring list */
+		kfree(klist);
+
+		ret = 0;
+	}
+
+ error2:
+	up_write(&keyring_serialise_link_sem);
+ error:
+	return ret;
+
+ error3:
+	/* undo the quota changes */
+	key_payload_reserve(keyring,
+			    keyring->datalen - KEYQUOTA_LINK_BYTES);
+	goto error2;
+
+} /* end __key_link() */
+
+/*****************************************************************************/
+/*
+ * link a key to a keyring
+ */
+int key_link(struct key *keyring, struct key *key)
+{
+	int ret;
+
+	key_check(keyring);
+	key_check(key);
+
+	down_write(&keyring->sem);
+	ret = __key_link(keyring, key);
+	up_write(&keyring->sem);
+
+	return ret;
+
+} /* end key_link() */
+
+EXPORT_SYMBOL(key_link);
+
+/*****************************************************************************/
+/*
+ * unlink the first link to a key from a keyring
+ */
+int key_unlink(struct key *keyring, struct key *key)
+{
+	struct keyring_list *klist;
+	int loop, ret;
+
+	key_check(keyring);
+	key_check(key);
+
+	ret = -ENOTDIR;
+	if (keyring->type != &key_type_keyring)
+		goto error;
+
+	down_write(&keyring->sem);
+
+	klist = keyring->payload.subscriptions;
+	if (klist) {
+		/* search the keyring for the key */
+		for (loop = 0; loop < klist->nkeys; loop++)
+			if (klist->keys[loop] == key)
+				goto key_is_present;
+	}
+
+	up_write(&keyring->sem);
+	ret = -ENOENT;
+	goto error;
+
+ key_is_present:
+	/* adjust the user's quota */
+	key_payload_reserve(keyring,
+			    keyring->datalen - KEYQUOTA_LINK_BYTES);
+
+	/* shuffle down the key pointers
+	 * - it might be worth shrinking the allocated memory, but that runs
+	 *   the risk of ENOMEM as we would have to copy
+	 */
+	write_lock(&keyring->lock);
+
+	klist->nkeys--;
+	if (loop < klist->nkeys)
+		memcpy(&klist->keys[loop],
+		       &klist->keys[loop + 1],
+		       (klist->nkeys - loop) * sizeof(struct key *));
+
+	write_unlock(&keyring->lock);
+
+	up_write(&keyring->sem);
+	key_put(key);
+	ret = 0;
+
+ error:
+	return ret;
+
+} /* end key_unlink() */
+
+EXPORT_SYMBOL(key_unlink);
+
+/*****************************************************************************/
+/*
+ * clear the specified process keyring
+ * - implements keyctl(KEYCTL_CLEAR)
+ */
+int keyring_clear(struct key *keyring)
+{
+	struct keyring_list *klist;
+	int loop, ret;
+
+	ret = -ENOTDIR;
+	if (keyring->type == &key_type_keyring) {
+		/* detach the pointer block with the locks held */
+		down_write(&keyring->sem);
+
+		klist = keyring->payload.subscriptions;
+		if (klist) {
+			/* adjust the quota */
+			key_payload_reserve(keyring,
+					    sizeof(struct keyring_list));
+
+			write_lock(&keyring->lock);
+			keyring->payload.subscriptions = NULL;
+			write_unlock(&keyring->lock);
+		}
+
+		up_write(&keyring->sem);
+
+		/* free the keys after the locks have been dropped */
+		if (klist) {
+			for (loop = klist->nkeys - 1; loop >= 0; loop--)
+				key_put(klist->keys[loop]);
+
+			kfree(klist);
+		}
+
+		ret = 0;
+	}
+
+	return ret;
+
+} /* end keyring_clear() */
+
+EXPORT_SYMBOL(keyring_clear);

extra/linux-2.6.10/security/keys/proc.c

@@ -0,0 +1,251 @@
+/* proc.c: proc files for key database enumeration
+ *
+ * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/fs.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <asm/errno.h>
+#include "internal.h"
+
+#ifdef CONFIG_KEYS_DEBUG_PROC_KEYS
+static int proc_keys_open(struct inode *inode, struct file *file);
+static void *proc_keys_start(struct seq_file *p, loff_t *_pos);
+static void *proc_keys_next(struct seq_file *p, void *v, loff_t *_pos);
+static void proc_keys_stop(struct seq_file *p, void *v);
+static int proc_keys_show(struct seq_file *m, void *v);
+
+static struct seq_operations proc_keys_ops = {
+	.start	= proc_keys_start,
+	.next	= proc_keys_next,
+	.stop	= proc_keys_stop,
+	.show	= proc_keys_show,
+};
+
+static struct file_operations proc_keys_fops = {
+	.open		= proc_keys_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= seq_release,
+};
+#endif
+
+static int proc_key_users_open(struct inode *inode, struct file *file);
+static void *proc_key_users_start(struct seq_file *p, loff_t *_pos);
+static void *proc_key_users_next(struct seq_file *p, void *v, loff_t *_pos);
+static void proc_key_users_stop(struct seq_file *p, void *v);
+static int proc_key_users_show(struct seq_file *m, void *v);
+
+static struct seq_operations proc_key_users_ops = {
+	.start	= proc_key_users_start,
+	.next	= proc_key_users_next,
+	.stop	= proc_key_users_stop,
+	.show	= proc_key_users_show,
+};
+
+static struct file_operations proc_key_users_fops = {
+	.open		= proc_key_users_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= seq_release,
+};
+
+/*****************************************************************************/
+/*
+ * declare the /proc files
+ */
+static int __init key_proc_init(void)
+{
+	struct proc_dir_entry *p;
+
+#ifdef CONFIG_KEYS_DEBUG_PROC_KEYS
+	p = create_proc_entry("keys", 0, NULL);
+	if (!p)
+		panic("Cannot create /proc/keys\n");
+
+	p->proc_fops = &proc_keys_fops;
+#endif
+
+	p = create_proc_entry("key-users", 0, NULL);
+	if (!p)
+		panic("Cannot create /proc/key-users\n");
+
+	p->proc_fops = &proc_key_users_fops;
+
+	return 0;
+
+} /* end key_proc_init() */
+
+__initcall(key_proc_init);
+
+/*****************************************************************************/
+/*
+ * implement "/proc/keys" to provides a list of the keys on the system
+ */
+#ifdef CONFIG_KEYS_DEBUG_PROC_KEYS
+
+static int proc_keys_open(struct inode *inode, struct file *file)
+{
+	return seq_open(file, &proc_keys_ops);
+
+}
+
+static void *proc_keys_start(struct seq_file *p, loff_t *_pos)
+{
+	struct rb_node *_p;
+	loff_t pos = *_pos;
+
+	spin_lock(&key_serial_lock);
+
+	_p = rb_first(&key_serial_tree);
+	while (pos > 0 && _p) {
+		pos--;
+		_p = rb_next(_p);
+	}
+
+	return _p;
+
+}
+
+static void *proc_keys_next(struct seq_file *p, void *v, loff_t *_pos)
+{
+	(*_pos)++;
+	return rb_next((struct rb_node *) v);
+
+}
+
+static void proc_keys_stop(struct seq_file *p, void *v)
+{
+	spin_unlock(&key_serial_lock);
+}
+
+static int proc_keys_show(struct seq_file *m, void *v)
+{
+	struct rb_node *_p = v;
+	struct key *key = rb_entry(_p, struct key, serial_node);
+	struct timespec now;
+	unsigned long timo;
+	char xbuf[12];
+
+	now = current_kernel_time();
+
+	read_lock(&key->lock);
+
+	/* come up with a suitable timeout value */
+	if (key->expiry == 0) {
+		memcpy(xbuf, "perm", 5);
+	}
+	else if (now.tv_sec >= key->expiry) {
+		memcpy(xbuf, "expd", 5);
+	}
+	else {
+		timo = key->expiry - now.tv_sec;
+
+		if (timo < 60)
+			sprintf(xbuf, "%lus", timo);
+		else if (timo < 60*60)
+			sprintf(xbuf, "%lum", timo / 60);
+		else if (timo < 60*60*24)
+			sprintf(xbuf, "%luh", timo / (60*60));
+		else if (timo < 60*60*24*7)
+			sprintf(xbuf, "%lud", timo / (60*60*24));
+		else
+			sprintf(xbuf, "%luw", timo / (60*60*24*7));
+	}
+
+	seq_printf(m, "%08x %c%c%c%c%c%c %5d %4s %06x %5d %5d %-9.9s ",
+		   key->serial,
+		   key->flags & KEY_FLAG_INSTANTIATED	? 'I' : '-',
+		   key->flags & KEY_FLAG_REVOKED	? 'R' : '-',
+		   key->flags & KEY_FLAG_DEAD		? 'D' : '-',
+		   key->flags & KEY_FLAG_IN_QUOTA	? 'Q' : '-',
+		   key->flags & KEY_FLAG_USER_CONSTRUCT	? 'U' : '-',
+		   key->flags & KEY_FLAG_NEGATIVE	? 'N' : '-',
+		   atomic_read(&key->usage),
+		   xbuf,
+		   key->perm,
+		   key->uid,
+		   key->gid,
+		   key->type->name);
+
+	if (key->type->describe)
+		key->type->describe(key, m);
+	seq_putc(m, '\n');
+
+	read_unlock(&key->lock);
+
+	return 0;
+
+}
+
+#endif /* CONFIG_KEYS_DEBUG_PROC_KEYS */
+
+/*****************************************************************************/
+/*
+ * implement "/proc/key-users" to provides a list of the key users
+ */
+static int proc_key_users_open(struct inode *inode, struct file *file)
+{
+	return seq_open(file, &proc_key_users_ops);
+
+}
+
+static void *proc_key_users_start(struct seq_file *p, loff_t *_pos)
+{
+	struct rb_node *_p;
+	loff_t pos = *_pos;
+
+	spin_lock(&key_user_lock);
+
+	_p = rb_first(&key_user_tree);
+	while (pos > 0 && _p) {
+		pos--;
+		_p = rb_next(_p);
+	}
+
+	return _p;
+
+}
+
+static void *proc_key_users_next(struct seq_file *p, void *v, loff_t *_pos)
+{
+	(*_pos)++;
+	return rb_next((struct rb_node *) v);
+
+}
+
+static void proc_key_users_stop(struct seq_file *p, void *v)
+{
+	spin_unlock(&key_user_lock);
+}
+
+static int proc_key_users_show(struct seq_file *m, void *v)
+{
+	struct rb_node *_p = v;
+	struct key_user *user = rb_entry(_p, struct key_user, node);
+
+	seq_printf(m, "%5u: %5d %d/%d %d/%d %d/%d\n",
+		   user->uid,
+		   atomic_read(&user->usage),
+		   atomic_read(&user->nkeys),
+		   atomic_read(&user->nikeys),
+		   user->qnkeys,
+		   KEYQUOTA_MAX_KEYS,
+		   user->qnbytes,
+		   KEYQUOTA_MAX_BYTES
+		   );
+
+	return 0;
+
+}

extra/linux-2.6.10/security/keys/process_keys.c

@@ -0,0 +1,640 @@
+/* process_keys.c: management of a process's keyrings
+ *
+ * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/keyctl.h>
+#include <linux/fs.h>
+#include <linux/err.h>
+#include <asm/uaccess.h>
+#include "internal.h"
+
+/* session keyring create vs join semaphore */
+static DECLARE_MUTEX(key_session_sem);
+
+/* the root user's tracking struct */
+struct key_user root_key_user = {
+	.usage		= ATOMIC_INIT(3),
+	.consq		= LIST_HEAD_INIT(root_key_user.consq),
+	.lock		= SPIN_LOCK_UNLOCKED,
+	.nkeys		= ATOMIC_INIT(2),
+	.nikeys		= ATOMIC_INIT(2),
+	.uid		= 0,
+};
+
+/* the root user's UID keyring */
+struct key root_user_keyring = {
+	.usage		= ATOMIC_INIT(1),
+	.serial		= 2,
+	.type		= &key_type_keyring,
+	.user		= &root_key_user,
+	.lock		= RW_LOCK_UNLOCKED,
+	.sem		= __RWSEM_INITIALIZER(root_user_keyring.sem),
+	.perm		= KEY_USR_ALL,
+	.flags		= KEY_FLAG_INSTANTIATED,
+	.description	= "_uid.0",
+#ifdef KEY_DEBUGGING
+	.magic		= KEY_DEBUG_MAGIC,
+#endif
+};
+
+/* the root user's default session keyring */
+struct key root_session_keyring = {
+	.usage		= ATOMIC_INIT(1),
+	.serial		= 1,
+	.type		= &key_type_keyring,
+	.user		= &root_key_user,
+	.lock		= RW_LOCK_UNLOCKED,
+	.sem		= __RWSEM_INITIALIZER(root_session_keyring.sem),
+	.perm		= KEY_USR_ALL,
+	.flags		= KEY_FLAG_INSTANTIATED,
+	.description	= "_uid_ses.0",
+#ifdef KEY_DEBUGGING
+	.magic		= KEY_DEBUG_MAGIC,
+#endif
+};
+
+/*****************************************************************************/
+/*
+ * allocate the keyrings to be associated with a UID
+ */
+int alloc_uid_keyring(struct user_struct *user)
+{
+	struct key *uid_keyring, *session_keyring;
+	char buf[20];
+	int ret;
+
+	/* concoct a default session keyring */
+	sprintf(buf, "_uid_ses.%u", user->uid);
+
+	session_keyring = keyring_alloc(buf, user->uid, (gid_t) -1, 0, NULL);
+	if (IS_ERR(session_keyring)) {
+		ret = PTR_ERR(session_keyring);
+		goto error;
+	}
+
+	/* and a UID specific keyring, pointed to by the default session
+	 * keyring */
+	sprintf(buf, "_uid.%u", user->uid);
+
+	uid_keyring = keyring_alloc(buf, user->uid, (gid_t) -1, 0,
+				    session_keyring);
+	if (IS_ERR(uid_keyring)) {
+		key_put(session_keyring);
+		ret = PTR_ERR(uid_keyring);
+		goto error;
+	}
+
+	/* install the keyrings */
+	user->uid_keyring = uid_keyring;
+	user->session_keyring = session_keyring;
+	ret = 0;
+
+ error:
+	return ret;
+
+} /* end alloc_uid_keyring() */
+
+/*****************************************************************************/
+/*
+ * deal with the UID changing
+ */
+void switch_uid_keyring(struct user_struct *new_user)
+{
+#if 0 /* do nothing for now */
+	struct key *old;
+
+	/* switch to the new user's session keyring if we were running under
+	 * root's default session keyring */
+	if (new_user->uid != 0 &&
+	    current->session_keyring == &root_session_keyring
+	    ) {
+		atomic_inc(&new_user->session_keyring->usage);
+
+		task_lock(current);
+		old = current->session_keyring;
+		current->session_keyring = new_user->session_keyring;
+		task_unlock(current);
+
+		key_put(old);
+	}
+#endif
+
+} /* end switch_uid_keyring() */
+
+/*****************************************************************************/
+/*
+ * install a fresh thread keyring, discarding the old one
+ */
+int install_thread_keyring(struct task_struct *tsk)
+{
+	struct key *keyring, *old;
+	char buf[20];
+	int ret;
+
+	sprintf(buf, "_tid.%u", tsk->pid);
+
+	keyring = keyring_alloc(buf, tsk->uid, tsk->gid, 1, NULL);
+	if (IS_ERR(keyring)) {
+		ret = PTR_ERR(keyring);
+		goto error;
+	}
+
+	task_lock(tsk);
+	old = tsk->thread_keyring;
+	tsk->thread_keyring = keyring;
+	task_unlock(tsk);
+
+	ret = 0;
+
+	key_put(old);
+ error:
+	return ret;
+
+} /* end install_thread_keyring() */
+
+/*****************************************************************************/
+/*
+ * install a fresh process keyring, discarding the old one
+ */
+static int install_process_keyring(struct task_struct *tsk)
+{
+	struct key *keyring, *old;
+	char buf[20];
+	int ret;
+
+	sprintf(buf, "_pid.%u", tsk->tgid);
+
+	keyring = keyring_alloc(buf, tsk->uid, tsk->gid, 1, NULL);
+	if (IS_ERR(keyring)) {
+		ret = PTR_ERR(keyring);
+		goto error;
+	}
+
+	task_lock(tsk);
+	old = tsk->process_keyring;
+	tsk->process_keyring = keyring;
+	task_unlock(tsk);
+
+	ret = 0;
+
+	key_put(old);
+ error:
+	return ret;
+
+} /* end install_process_keyring() */
+
+/*****************************************************************************/
+/*
+ * install a session keyring, discarding the old one
+ * - if a keyring is not supplied, an empty one is invented
+ */
+static int install_session_keyring(struct task_struct *tsk,
+				   struct key *keyring)
+{
+	struct key *old;
+	char buf[20];
+	int ret;
+
+	/* create an empty session keyring */
+	if (!keyring) {
+		sprintf(buf, "_ses.%u", tsk->tgid);
+
+		keyring = keyring_alloc(buf, tsk->uid, tsk->gid, 1, NULL);
+		if (IS_ERR(keyring)) {
+			ret = PTR_ERR(keyring);
+			goto error;
+		}
+	}
+	else {
+		atomic_inc(&keyring->usage);
+	}
+
+	/* install the keyring */
+	task_lock(tsk);
+	old = tsk->session_keyring;
+	tsk->session_keyring = keyring;
+	task_unlock(tsk);
+
+	ret = 0;
+
+	key_put(old);
+ error:
+	return ret;
+
+} /* end install_session_keyring() */
+
+/*****************************************************************************/
+/*
+ * copy the keys for fork
+ */
+int copy_keys(unsigned long clone_flags, struct task_struct *tsk)
+{
+	int ret = 0;
+
+	key_check(tsk->session_keyring);
+	key_check(tsk->process_keyring);
+	key_check(tsk->thread_keyring);
+
+	if (tsk->session_keyring)
+		atomic_inc(&tsk->session_keyring->usage);
+
+	if (tsk->process_keyring) {
+		if (clone_flags & CLONE_THREAD) {
+			atomic_inc(&tsk->process_keyring->usage);
+		}
+		else {
+			tsk->process_keyring = NULL;
+			ret = install_process_keyring(tsk);
+		}
+	}
+
+	tsk->thread_keyring = NULL;
+	return ret;
+
+} /* end copy_keys() */
+
+/*****************************************************************************/
+/*
+ * dispose of keys upon exit
+ */
+void exit_keys(struct task_struct *tsk)
+{
+	key_put(tsk->session_keyring);
+	key_put(tsk->process_keyring);
+	key_put(tsk->thread_keyring);
+
+} /* end exit_keys() */
+
+/*****************************************************************************/
+/*
+ * deal with execve()
+ */
+int exec_keys(struct task_struct *tsk)
+{
+	struct key *old;
+
+	/* newly exec'd tasks don't get a thread keyring */
+	task_lock(tsk);
+	old = tsk->thread_keyring;
+	tsk->thread_keyring = NULL;
+	task_unlock(tsk);
+
+	key_put(old);
+
+	/* newly exec'd tasks get a fresh process keyring */
+	return install_process_keyring(tsk);
+
+} /* end exec_keys() */
+
+/*****************************************************************************/
+/*
+ * deal with SUID programs
+ * - we might want to make this invent a new session keyring
+ */
+int suid_keys(struct task_struct *tsk)
+{
+	return 0;
+
+} /* end suid_keys() */
+
+/*****************************************************************************/
+/*
+ * the filesystem user ID changed
+ */
+void key_fsuid_changed(struct task_struct *tsk)
+{
+	/* update the ownership of the process keyring */
+	if (tsk->process_keyring) {
+		down_write(&tsk->process_keyring->sem);
+		write_lock(&tsk->process_keyring->lock);
+		tsk->process_keyring->uid = tsk->fsuid;
+		write_unlock(&tsk->process_keyring->lock);
+		up_write(&tsk->process_keyring->sem);
+	}
+
+	/* update the ownership of the thread keyring */
+	if (tsk->thread_keyring) {
+		down_write(&tsk->thread_keyring->sem);
+		write_lock(&tsk->thread_keyring->lock);
+		tsk->thread_keyring->uid = tsk->fsuid;
+		write_unlock(&tsk->thread_keyring->lock);
+		up_write(&tsk->thread_keyring->sem);
+	}
+
+} /* end key_fsuid_changed() */
+
+/*****************************************************************************/
+/*
+ * the filesystem group ID changed
+ */
+void key_fsgid_changed(struct task_struct *tsk)
+{
+	/* update the ownership of the process keyring */
+	if (tsk->process_keyring) {
+		down_write(&tsk->process_keyring->sem);
+		write_lock(&tsk->process_keyring->lock);
+		tsk->process_keyring->gid = tsk->fsgid;
+		write_unlock(&tsk->process_keyring->lock);
+		up_write(&tsk->process_keyring->sem);
+	}
+
+	/* update the ownership of the thread keyring */
+	if (tsk->thread_keyring) {
+		down_write(&tsk->thread_keyring->sem);
+		write_lock(&tsk->thread_keyring->lock);
+		tsk->thread_keyring->gid = tsk->fsgid;
+		write_unlock(&tsk->thread_keyring->lock);
+		up_write(&tsk->thread_keyring->sem);
+	}
+
+} /* end key_fsgid_changed() */
+
+/*****************************************************************************/
+/*
+ * search the process keyrings for the first matching key
+ * - we use the supplied match function to see if the description (or other
+ *   feature of interest) matches
+ * - we return -EAGAIN if we didn't find any matching key
+ * - we return -ENOKEY if we found only negative matching keys
+ */
+struct key *search_process_keyrings_aux(struct key_type *type,
+					const void *description,
+					key_match_func_t match)
+{
+	struct task_struct *tsk = current;
+	struct key *key, *ret, *err, *session;
+
+	/* we want to return -EAGAIN or -ENOKEY if any of the keyrings were
+	 * searchable, but we failed to find a key or we found a negative key;
+	 * otherwise we want to return a sample error (probably -EACCES) if
+	 * none of the keyrings were searchable
+	 *
+	 * in terms of priority: success > -ENOKEY > -EAGAIN > other error
+	 */
+	key = NULL;
+	ret = NULL;
+	err = ERR_PTR(-EAGAIN);
+
+	/* search the thread keyring first */
+	if (tsk->thread_keyring) {
+		key = keyring_search_aux(tsk->thread_keyring, type,
+					 description, match);
+		if (!IS_ERR(key))
+			goto found;
+
+		switch (PTR_ERR(key)) {
+		case -EAGAIN: /* no key */
+			if (ret)
+				break;
+		case -ENOKEY: /* negative key */
+			ret = key;
+			break;
+		default:
+			err = key;
+			break;
+		}
+	}
+
+	/* search the process keyring second */
+	if (tsk->process_keyring) {
+		key = keyring_search_aux(tsk->process_keyring, type,
+					 description, match);
+		if (!IS_ERR(key))
+			goto found;
+
+		switch (PTR_ERR(key)) {
+		case -EAGAIN: /* no key */
+			if (ret)
+				break;
+		case -ENOKEY: /* negative key */
+			ret = key;
+			break;
+		default:
+			err = key;
+			break;
+		}
+	}
+
+	/* search the session keyring last */
+	session = tsk->session_keyring;
+	if (!session)
+		session = tsk->user->session_keyring;
+
+	key = keyring_search_aux(session, type,
+				 description, match);
+	if (!IS_ERR(key))
+		goto found;
+
+	switch (PTR_ERR(key)) {
+	case -EAGAIN: /* no key */
+		if (ret)
+			break;
+	case -ENOKEY: /* negative key */
+		ret = key;
+		break;
+	default:
+		err = key;
+		break;
+	}
+
+	/* no key - decide on the error we're going to go for */
+	key = ret ? ret : err;
+
+ found:
+	return key;
+
+} /* end search_process_keyrings_aux() */
+
+/*****************************************************************************/
+/*
+ * search the process keyrings for the first matching key
+ * - we return -EAGAIN if we didn't find any matching key
+ * - we return -ENOKEY if we found only negative matching keys
+ */
+struct key *search_process_keyrings(struct key_type *type,
+				    const char *description)
+{
+	return search_process_keyrings_aux(type, description, type->match);
+
+} /* end search_process_keyrings() */
+
+/*****************************************************************************/
+/*
+ * lookup a key given a key ID from userspace with a given permissions mask
+ * - don't create special keyrings unless so requested
+ * - partially constructed keys aren't found unless requested
+ */
+struct key *lookup_user_key(key_serial_t id, int create, int partial,
+			    key_perm_t perm)
+{
+	struct task_struct *tsk = current;
+	struct key *key;
+	int ret;
+
+	key = ERR_PTR(-ENOKEY);
+
+	switch (id) {
+	case KEY_SPEC_THREAD_KEYRING:
+		if (!tsk->thread_keyring) {
+			if (!create)
+				goto error;
+
+			ret = install_thread_keyring(tsk);
+			if (ret < 0) {
+				key = ERR_PTR(ret);
+				goto error;
+			}
+		}
+
+		key = tsk->thread_keyring;
+		atomic_inc(&key->usage);
+		break;
+
+	case KEY_SPEC_PROCESS_KEYRING:
+		if (!tsk->process_keyring) {
+			if (!create)
+				goto error;
+
+			ret = install_process_keyring(tsk);
+			if (ret < 0) {
+				key = ERR_PTR(ret);
+				goto error;
+			}
+		}
+
+		key = tsk->process_keyring;
+		atomic_inc(&key->usage);
+		break;
+
+	case KEY_SPEC_SESSION_KEYRING:
+		if (!tsk->session_keyring) {
+			/* always install a session keyring upon access if one
+			 * doesn't exist yet */
+			ret = install_session_keyring(
+			       tsk, tsk->user->session_keyring);
+			if (ret < 0)
+				goto error;
+		}
+
+		key = tsk->session_keyring;
+		atomic_inc(&key->usage);
+		break;
+
+	case KEY_SPEC_USER_KEYRING:
+		key = tsk->user->uid_keyring;
+		atomic_inc(&key->usage);
+		break;
+
+	case KEY_SPEC_USER_SESSION_KEYRING:
+		key = tsk->user->session_keyring;
+		atomic_inc(&key->usage);
+		break;
+
+	case KEY_SPEC_GROUP_KEYRING:
+		/* group keyrings are not yet supported */
+		key = ERR_PTR(-EINVAL);
+		goto error;
+
+	default:
+		key = ERR_PTR(-EINVAL);
+		if (id < 1)
+			goto error;
+
+		key = key_lookup(id);
+		if (IS_ERR(key))
+			goto error;
+		break;
+	}
+
+	/* check the status and permissions */
+	if (perm) {
+		ret = key_validate(key);
+		if (ret < 0)
+			goto invalid_key;
+	}
+
+	ret = -EIO;
+	if (!partial && !(key->flags & KEY_FLAG_INSTANTIATED))
+		goto invalid_key;
+
+	ret = -EACCES;
+	if (!key_permission(key, perm))
+		goto invalid_key;
+
+ error:
+	return key;
+
+ invalid_key:
+	key_put(key);
+	key = ERR_PTR(ret);
+	goto error;
+
+} /* end lookup_user_key() */
+
+/*****************************************************************************/
+/*
+ * join the named keyring as the session keyring if possible, or attempt to
+ * create a new one of that name if not
+ * - if the name is NULL, an empty anonymous keyring is installed instead
+ * - named session keyring joining is done with a semaphore held
+ */
+long join_session_keyring(const char *name)
+{
+	struct task_struct *tsk = current;
+	struct key *keyring;
+	long ret;
+
+	/* if no name is provided, install an anonymous keyring */
+	if (!name) {
+		ret = install_session_keyring(tsk, NULL);
+		if (ret < 0)
+			goto error;
+
+		ret = tsk->session_keyring->serial;
+		goto error;
+	}
+
+	/* allow the user to join or create a named keyring */
+	down(&key_session_sem);
+
+	/* look for an existing keyring of this name */
+	keyring = find_keyring_by_name(name, 0);
+	if (PTR_ERR(keyring) == -ENOKEY) {
+		/* not found - try and create a new one */
+		keyring = keyring_alloc(name, tsk->uid, tsk->gid, 0, NULL);
+		if (IS_ERR(keyring)) {
+			ret = PTR_ERR(keyring);
+			goto error;
+		}
+	}
+	else if (IS_ERR(keyring)) {
+		ret = PTR_ERR(keyring);
+		goto error2;
+	}
+
+	/* we've got a keyring - now to install it */
+	ret = install_session_keyring(tsk, keyring);
+	if (ret < 0)
+		goto error2;
+
+	key_put(keyring);
+
+	ret = tsk->session_keyring->serial;
+
+ error2:
+	up(&key_session_sem);
+ error:
+	return ret;
+
+} /* end join_session_keyring() */

extra/linux-2.6.10/security/keys/request_key.c

@@ -0,0 +1,337 @@
+/* request_key.c: request a key from userspace
+ *
+ * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/module.h>
+#include <linux/sched.h>
+#include <linux/kmod.h>
+#include <linux/err.h>
+#include "internal.h"
+
+struct key_construction {
+	struct list_head	link;	/* link in construction queue */
+	struct key		*key;	/* key being constructed */
+};
+
+/* when waiting for someone else's keys, you get added to this */
+DECLARE_WAIT_QUEUE_HEAD(request_key_conswq);
+
+/*****************************************************************************/
+/*
+ * request userspace finish the construction of a key
+ * - execute "/sbin/request-key <op> <key> <uid> <gid> <keyring> <keyring> <keyring> <info>"
+ * - if callout_info is an empty string, it'll be rendered as a "-" instead
+ */
+static int call_request_key(struct key *key,
+			    const char *op,
+			    const char *callout_info)
+{
+	struct task_struct *tsk = current;
+	char *argv[10], *envp[3], uid_str[12], gid_str[12];
+	char key_str[12], keyring_str[3][12];
+	int i;
+
+	/* record the UID and GID */
+	sprintf(uid_str, "%d", current->fsuid);
+	sprintf(gid_str, "%d", current->fsgid);
+
+	/* we say which key is under construction */
+	sprintf(key_str, "%d", key->serial);
+
+	/* we specify the process's default keyrings */
+	task_lock(current);
+	sprintf(keyring_str[0], "%d",
+		tsk->thread_keyring ? tsk->thread_keyring->serial : 0);
+	sprintf(keyring_str[1], "%d",
+		tsk->process_keyring ? tsk->process_keyring->serial : 0);
+	sprintf(keyring_str[2], "%d",
+		(tsk->session_keyring ?
+		 tsk->session_keyring->serial :
+		 tsk->user->session_keyring->serial));
+	task_unlock(tsk);
+
+	/* set up a minimal environment */
+	i = 0;
+	envp[i++] = "HOME=/";
+	envp[i++] = "PATH=/sbin:/bin:/usr/sbin:/usr/bin";
+	envp[i] = NULL;
+
+	/* set up the argument list */
+	i = 0;
+	argv[i++] = "/sbin/request-key";
+	argv[i++] = (char *) op;
+	argv[i++] = key_str;
+	argv[i++] = uid_str;
+	argv[i++] = gid_str;
+	argv[i++] = keyring_str[0];
+	argv[i++] = keyring_str[1];
+	argv[i++] = keyring_str[2];
+	argv[i++] = callout_info[0] ? (char *) callout_info : "-";
+	argv[i] = NULL;
+
+	/* do it */
+	return call_usermodehelper(argv[0], argv, envp, 1);
+
+} /* end call_request_key() */
+
+/*****************************************************************************/
+/*
+ * call out to userspace for the key
+ * - called with the construction sem held, but the sem is dropped here
+ * - we ignore program failure and go on key status instead
+ */
+static struct key *__request_key_construction(struct key_type *type,
+					      const char *description,
+					      const char *callout_info)
+{
+	struct key_construction cons;
+	struct timespec now;
+	struct key *key;
+	int ret, negative;
+
+	/* create a key and add it to the queue */
+	key = key_alloc(type, description,
+			current->fsuid, current->fsgid, KEY_USR_ALL, 0);
+	if (IS_ERR(key))
+		goto alloc_failed;
+
+	write_lock(&key->lock);
+	key->flags |= KEY_FLAG_USER_CONSTRUCT;
+	write_unlock(&key->lock);
+
+	cons.key = key;
+	list_add_tail(&cons.link, &key->user->consq);
+
+	/* we drop the construction sem here on behalf of the caller */
+	up_write(&key_construction_sem);
+
+	/* make the call */
+	ret = call_request_key(key, "create", callout_info);
+	if (ret < 0)
+		goto request_failed;
+
+	/* if the key wasn't instantiated, then we want to give an error */
+	ret = -ENOKEY;
+	if (!(key->flags & KEY_FLAG_INSTANTIATED))
+		goto request_failed;
+
+	down_write(&key_construction_sem);
+	list_del(&cons.link);
+	up_write(&key_construction_sem);
+
+	/* also give an error if the key was negatively instantiated */
+ check_not_negative:
+	if (key->flags & KEY_FLAG_NEGATIVE) {
+		key_put(key);
+		key = ERR_PTR(-ENOKEY);
+	}
+
+ out:
+	return key;
+
+ request_failed:
+	/* it wasn't instantiated
+	 * - remove from construction queue
+	 * - mark the key as dead
+	 */
+	negative = 0;
+	down_write(&key_construction_sem);
+
+	list_del(&cons.link);
+
+	write_lock(&key->lock);
+	key->flags &= ~KEY_FLAG_USER_CONSTRUCT;
+
+	/* check it didn't get instantiated between the check and the down */
+	if (!(key->flags & KEY_FLAG_INSTANTIATED)) {
+		key->flags |= KEY_FLAG_INSTANTIATED | KEY_FLAG_NEGATIVE;
+		negative = 1;
+	}
+
+	write_unlock(&key->lock);
+	up_write(&key_construction_sem);
+
+	if (!negative)
+		goto check_not_negative; /* surprisingly, the key got
+					  * instantiated */
+
+	/* set the timeout and store in the session keyring if we can */
+	now = current_kernel_time();
+	key->expiry = now.tv_sec + key_negative_timeout;
+
+	if (current->session_keyring)
+		key_link(current->session_keyring, key);
+	key_put(key);
+
+	/* notify anyone who was waiting */
+	wake_up_all(&request_key_conswq);
+
+	key = ERR_PTR(ret);
+	goto out;
+
+ alloc_failed:
+	up_write(&key_construction_sem);
+	goto out;
+
+} /* end __request_key_construction() */
+
+/*****************************************************************************/
+/*
+ * call out to userspace to request the key
+ * - we check the construction queue first to see if an appropriate key is
+ *   already being constructed by userspace
+ */
+static struct key *request_key_construction(struct key_type *type,
+					    const char *description,
+					    struct key_user *user,
+					    const char *callout_info)
+{
+	struct key_construction *pcons;
+	struct key *key, *ckey;
+
+	DECLARE_WAITQUEUE(myself, current);
+
+	/* see if there's such a key under construction already */
+	down_write(&key_construction_sem);
+
+	list_for_each_entry(pcons, &user->consq, link) {
+		ckey = pcons->key;
+
+		if (ckey->type != type)
+			continue;
+
+		if (type->match(ckey, description))
+			goto found_key_under_construction;
+	}
+
+	/* see about getting userspace to construct the key */
+	key = __request_key_construction(type, description, callout_info);
+ error:
+	return key;
+
+	/* someone else has the same key under construction
+	 * - we want to keep an eye on their key
+	 */
+ found_key_under_construction:
+	atomic_inc(&ckey->usage);
+	up_write(&key_construction_sem);
+
+	/* wait for the key to be completed one way or another */
+	add_wait_queue(&request_key_conswq, &myself);
+
+	for (;;) {
+		set_current_state(TASK_UNINTERRUPTIBLE);
+		if (!(ckey->flags & KEY_FLAG_USER_CONSTRUCT))
+			break;
+		schedule();
+	}
+
+	set_current_state(TASK_RUNNING);
+	remove_wait_queue(&request_key_conswq, &myself);
+
+	/* we'll need to search this process's keyrings to see if the key is
+	 * now there since we can't automatically assume it's also available
+	 * there */
+	key_put(ckey);
+	ckey = NULL;
+
+	key = NULL; /* request a retry */
+	goto error;
+
+} /* end request_key_construction() */
+
+/*****************************************************************************/
+/*
+ * request a key
+ * - search the process's keyrings
+ * - check the list of keys being created or updated
+ * - call out to userspace for a key if requested (supplementary info can be
+ *   passed)
+ */
+struct key *request_key(struct key_type *type,
+			const char *description,
+			const char *callout_info)
+{
+	struct key_user *user;
+	struct key *key;
+
+	/* search all the process keyrings for a key */
+	key = search_process_keyrings_aux(type, description, type->match);
+
+	if (PTR_ERR(key) == -EAGAIN) {
+		/* the search failed, but the keyrings were searchable, so we
+		 * should consult userspace if we can */
+		key = ERR_PTR(-ENOKEY);
+		if (!callout_info)
+			goto error;
+
+		/* - get hold of the user's construction queue */
+		user = key_user_lookup(current->fsuid);
+		if (IS_ERR(user)) {
+			key = ERR_PTR(PTR_ERR(user));
+			goto error;
+		}
+
+		for (;;) {
+			/* ask userspace (returns NULL if it waited on a key
+			 * being constructed) */
+			key = request_key_construction(type, description,
+						       user, callout_info);
+			if (key)
+				break;
+
+			/* someone else made the key we want, so we need to
+			 * search again as it might now be available to us */
+			key = search_process_keyrings_aux(type, description,
+							  type->match);
+			if (PTR_ERR(key) != -EAGAIN)
+				break;
+		}
+
+		key_user_put(user);
+	}
+
+ error:
+	return key;
+
+} /* end request_key() */
+
+EXPORT_SYMBOL(request_key);
+
+/*****************************************************************************/
+/*
+ * validate a key
+ */
+int key_validate(struct key *key)
+{
+	struct timespec now;
+	int ret = 0;
+
+	if (key) {
+		/* check it's still accessible */
+		ret = -EKEYREVOKED;
+		if (key->flags & (KEY_FLAG_REVOKED | KEY_FLAG_DEAD))
+			goto error;
+
+		/* check it hasn't expired */
+		ret = 0;
+		if (key->expiry) {
+			now = current_kernel_time();
+			if (now.tv_sec >= key->expiry)
+				ret = -EKEYEXPIRED;
+		}
+	}
+
+ error:
+	return ret;
+
+} /* end key_validate() */
+
+EXPORT_SYMBOL(key_validate);

extra/linux-2.6.10/security/keys/user_defined.c

@@ -0,0 +1,191 @@
+/* user_defined.c: user defined key type
+ *
+ * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/seq_file.h>
+#include <linux/err.h>
+#include <asm/uaccess.h>
+#include "internal.h"
+
+static int user_instantiate(struct key *key, const void *data, size_t datalen);
+static int user_duplicate(struct key *key, const struct key *source);
+static int user_update(struct key *key, const void *data, size_t datalen);
+static int user_match(const struct key *key, const void *criterion);
+static void user_destroy(struct key *key);
+static void user_describe(const struct key *user, struct seq_file *m);
+static long user_read(const struct key *key,
+		      char __user *buffer, size_t buflen);
+
+/*
+ * user defined keys take an arbitrary string as the description and an
+ * arbitrary blob of data as the payload
+ */
+struct key_type key_type_user = {
+	.name		= "user",
+	.instantiate	= user_instantiate,
+	.duplicate	= user_duplicate,
+	.update		= user_update,
+	.match		= user_match,
+	.destroy	= user_destroy,
+	.describe	= user_describe,
+	.read		= user_read,
+};
+
+/*****************************************************************************/
+/*
+ * instantiate a user defined key
+ */
+static int user_instantiate(struct key *key, const void *data, size_t datalen)
+{
+	int ret;
+
+	ret = -EINVAL;
+	if (datalen <= 0 || datalen > 32767 || !data)
+		goto error;
+
+	ret = key_payload_reserve(key, datalen);
+	if (ret < 0)
+		goto error;
+
+	/* attach the data */
+	ret = -ENOMEM;
+	key->payload.data = kmalloc(datalen, GFP_KERNEL);
+	if (!key->payload.data)
+		goto error;
+
+	memcpy(key->payload.data, data, datalen);
+	ret = 0;
+
+ error:
+	return ret;
+
+} /* end user_instantiate() */
+
+/*****************************************************************************/
+/*
+ * duplicate a user defined key
+ */
+static int user_duplicate(struct key *key, const struct key *source)
+{
+	int ret;
+
+	/* just copy the payload */
+	ret = -ENOMEM;
+	key->payload.data = kmalloc(source->datalen, GFP_KERNEL);
+
+	if (key->payload.data) {
+		key->datalen = source->datalen;
+		memcpy(key->payload.data, source->payload.data, source->datalen);
+		ret = 0;
+	}
+
+	return ret;
+
+} /* end user_duplicate() */
+
+/*****************************************************************************/
+/*
+ * update a user defined key
+ */
+static int user_update(struct key *key, const void *data, size_t datalen)
+{
+	void *new, *zap;
+	int ret;
+
+	ret = -EINVAL;
+	if (datalen <= 0 || datalen > 32767 || !data)
+		goto error;
+
+	/* copy the data */
+	ret = -ENOMEM;
+	new = kmalloc(datalen, GFP_KERNEL);
+	if (!new)
+		goto error;
+
+	memcpy(new, data, datalen);
+
+	/* check the quota and attach the new data */
+	zap = new;
+	write_lock(&key->lock);
+
+	ret = key_payload_reserve(key, datalen);
+
+	if (ret == 0) {
+		/* attach the new data, displacing the old */
+		zap = key->payload.data;
+		key->payload.data = new;
+		key->expiry = 0;
+	}
+
+	write_unlock(&key->lock);
+	kfree(zap);
+
+ error:
+	return ret;
+
+} /* end user_update() */
+
+/*****************************************************************************/
+/*
+ * match users on their name
+ */
+static int user_match(const struct key *key, const void *description)
+{
+	return strcmp(key->description, description) == 0;
+
+} /* end user_match() */
+
+/*****************************************************************************/
+/*
+ * dispose of the data dangling from the corpse of a user
+ */
+static void user_destroy(struct key *key)
+{
+	kfree(key->payload.data);
+
+} /* end user_destroy() */
+
+/*****************************************************************************/
+/*
+ * describe the user
+ */
+static void user_describe(const struct key *key, struct seq_file *m)
+{
+	seq_puts(m, key->description);
+
+	seq_printf(m, ": %u", key->datalen);
+
+} /* end user_describe() */
+
+/*****************************************************************************/
+/*
+ * read the key data
+ */
+static long user_read(const struct key *key,
+		      char __user *buffer, size_t buflen)
+{
+	long ret = key->datalen;
+
+	/* we can return the data as is */
+	if (buffer && buflen > 0) {
+		if (buflen > key->datalen)
+			buflen = key->datalen;
+
+		if (copy_to_user(buffer, key->payload.data, buflen) != 0)
+			ret = -EFAULT;
+	}
+
+	return ret;
+
+} /* end user_read() */

extra/linux-2.6.10/security/root_plug.c

@@ -0,0 +1,142 @@
+/*
+ * Root Plug sample LSM module
+ *
+ * Originally written for a Linux Journal.
+ *
+ * Copyright (C) 2002 Greg Kroah-Hartman <greg@kroah.com>
+ *
+ * Prevents any programs running with egid == 0 if a specific USB device
+ * is not present in the system.  Yes, it can be gotten around, but is a
+ * nice starting point for people to play with, and learn the LSM
+ * interface.
+ *
+ * If you want to turn this into something with a semblance of security,
+ * you need to hook the task_* functions also.
+ *
+ * See http://www.linuxjournal.com/article.php?sid=6279 for more information
+ * about this code.
+ *
+ *	This program is free software; you can redistribute it and/or
+ *	modify it under the terms of the GNU General Public License as
+ *	published by the Free Software Foundation, version 2 of the
+ *	License.
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/security.h>
+#include <linux/usb.h>
+
+/* flag to keep track of how we were registered */
+static int secondary;
+
+/* default is a generic type of usb to serial converter */
+static int vendor_id = 0x0557;
+static int product_id = 0x2008;
+
+module_param(vendor_id, uint, 0400);
+MODULE_PARM_DESC(vendor_id, "USB Vendor ID of device to look for");
+
+module_param(product_id, uint, 0400);
+MODULE_PARM_DESC(product_id, "USB Product ID of device to look for");
+
+/* should we print out debug messages */
+static int debug = 0;
+
+module_param(debug, bool, 0600);
+MODULE_PARM_DESC(debug, "Debug enabled or not");
+
+#if defined(CONFIG_SECURITY_ROOTPLUG_MODULE)
+#define MY_NAME THIS_MODULE->name
+#else
+#define MY_NAME "root_plug"
+#endif
+
+#define root_dbg(fmt, arg...)					\
+	do {							\
+		if (debug)					\
+			printk(KERN_DEBUG "%s: %s: " fmt ,	\
+				MY_NAME , __FUNCTION__ , 	\
+				## arg);			\
+	} while (0)
+
+static int rootplug_bprm_check_security (struct linux_binprm *bprm)
+{
+	struct usb_device *dev;
+
+	root_dbg("file %s, e_uid = %d, e_gid = %d\n",
+		 bprm->filename, bprm->e_uid, bprm->e_gid);
+
+	if (bprm->e_gid == 0) {
+		dev = usb_find_device(vendor_id, product_id);
+		if (!dev) {
+			root_dbg("e_gid = 0, and device not found, "
+				 "task not allowed to run...\n");
+			return -EPERM;
+		}
+		usb_put_dev(dev);
+	}
+
+	return 0;
+}
+
+static struct security_operations rootplug_security_ops = {
+	/* Use the capability functions for some of the hooks */
+	.ptrace =			cap_ptrace,
+	.capget =			cap_capget,
+	.capset_check =			cap_capset_check,
+	.capset_set =			cap_capset_set,
+	.capable =			cap_capable,
+
+	.bprm_apply_creds =		cap_bprm_apply_creds,
+	.bprm_set_security =		cap_bprm_set_security,
+
+	.task_post_setuid =		cap_task_post_setuid,
+	.task_reparent_to_init =	cap_task_reparent_to_init,
+
+	.bprm_check_security =		rootplug_bprm_check_security,
+};
+
+static int __init rootplug_init (void)
+{
+	/* register ourselves with the security framework */
+	if (register_security (&rootplug_security_ops)) {
+		printk (KERN_INFO 
+			"Failure registering Root Plug module with the kernel\n");
+		/* try registering with primary module */
+		if (mod_reg_security (MY_NAME, &rootplug_security_ops)) {
+			printk (KERN_INFO "Failure registering Root Plug "
+				" module with primary security module.\n");
+			return -EINVAL;
+		}
+		secondary = 1;
+	}
+	printk (KERN_INFO "Root Plug module initialized, "
+		"vendor_id = %4.4x, product id = %4.4x\n", vendor_id, product_id);
+	return 0;
+}
+
+static void __exit rootplug_exit (void)
+{
+	/* remove ourselves from the security framework */
+	if (secondary) {
+		if (mod_unreg_security (MY_NAME, &rootplug_security_ops))
+			printk (KERN_INFO "Failure unregistering Root Plug "
+				" module with primary module.\n");
+	} else { 
+		if (unregister_security (&rootplug_security_ops)) {
+			printk (KERN_INFO "Failure unregistering Root Plug "
+				"module with the kernel\n");
+		}
+	}
+	printk (KERN_INFO "Root Plug module removed\n");
+}
+
+security_initcall (rootplug_init);
+module_exit (rootplug_exit);
+
+MODULE_DESCRIPTION("Root Plug sample LSM module, written for Linux Journal article");
+MODULE_LICENSE("GPL");
+

extra/linux-2.6.10/security/seclvl.c

@@ -0,0 +1,747 @@
+/**
+ * BSD Secure Levels LSM
+ *
+ * Maintainers:
+ *	Michael A. Halcrow <mike@halcrow.us>
+ *	Serge Hallyn <hallyn@cs.wm.edu>
+ *
+ * Copyright (c) 2001 WireX Communications, Inc <chris@wirex.com>
+ * Copyright (c) 2001 Greg Kroah-Hartman <greg@kroah.com>
+ * Copyright (c) 2002 International Business Machines <robb@austin.ibm.com>
+ *
+ *	This program is free software; you can redistribute it and/or modify
+ *	it under the terms of the GNU General Public License as published by
+ *	the Free Software Foundation; either version 2 of the License, or
+ *	(at your option) any later version.
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/security.h>
+#include <linux/netlink.h>
+#include <linux/fs.h>
+#include <linux/namei.h>
+#include <linux/mount.h>
+#include <linux/capability.h>
+#include <linux/time.h>
+#include <linux/proc_fs.h>
+#include <linux/kobject.h>
+#include <linux/crypto.h>
+#include <asm/scatterlist.h>
+#include <linux/gfp.h>
+#include <linux/sysfs.h>
+
+#define SHA1_DIGEST_SIZE 20
+
+/**
+ * Module parameter that defines the initial secure level.
+ *
+ * When built as a module, it defaults to seclvl 1, which is the
+ * behavior of BSD secure levels.  Note that this default behavior
+ * wrecks havoc on a machine when the seclvl module is compiled into
+ * the kernel.	In that case, we default to seclvl 0.
+ */
+#ifdef CONFIG_SECURITY_SECLVL_MODULE
+static int initlvl = 1;
+#else
+static int initlvl;
+#endif
+module_param(initlvl, int, 0);
+MODULE_PARM_DESC(initlvl, "Initial secure level (defaults to 1)");
+
+/* Module parameter that defines the verbosity level */
+static int verbosity;
+module_param(verbosity, int, 0);
+MODULE_PARM_DESC(verbosity, "Initial verbosity level (0 or 1; defaults to "
+		 "0, which is Quiet)");
+
+/**
+ * Optional password which can be passed in to bring seclvl to 0
+ * (i.e., for halt/reboot).  Defaults to NULL (the passwd attribute
+ * file will not be registered in sysfs).
+ *
+ * This gets converted to its SHA1 hash when stored.  It's probably
+ * not a good idea to use this parameter when loading seclvl from a
+ * script; use sha1_passwd instead.
+ */
+
+#define MAX_PASSWD_SIZE	32
+static char passwd[MAX_PASSWD_SIZE];
+module_param_string(passwd, passwd, sizeof(passwd), 0);
+MODULE_PARM_DESC(passwd,
+		 "Plaintext of password that sets seclvl=0 when written to "
+		 "(sysfs mount point)/seclvl/passwd\n");
+
+/**
+ * SHA1 hashed version of the optional password which can be passed in
+ * to bring seclvl to 0 (i.e., for halt/reboot).  Must be in
+ * hexadecimal format (40 characters).	Defaults to NULL (the passwd
+ * attribute file will not be registered in sysfs).
+ *
+ * Use the sha1sum utility to generate the SHA1 hash of a password:
+ *
+ * echo -n "secret" | sha1sum
+ */
+#define MAX_SHA1_PASSWD	41
+static char sha1_passwd[MAX_SHA1_PASSWD];
+module_param_string(sha1_passwd, sha1_passwd, sizeof(sha1_passwd), 0);
+MODULE_PARM_DESC(sha1_passwd,
+		 "SHA1 hash (40 hexadecimal characters) of password that "
+		 "sets seclvl=0 when plaintext password is written to "
+		 "(sysfs mount point)/seclvl/passwd\n");
+
+static int hideHash = 1;
+module_param(hideHash, int, 0);
+MODULE_PARM_DESC(hideHash, "When set to 0, reading seclvl/passwd from sysfs "
+		 "will return the SHA1-hashed value of the password that "
+		 "lowers the secure level to 0.\n");
+
+#define MY_NAME "seclvl"
+
+/**
+ * This time-limits log writes to one per second.
+ */
+#define seclvl_printk(verb, type, fmt, arg...)			\
+	do {							\
+		if (verbosity >= verb) {			\
+			static unsigned long _prior;		\
+			unsigned long _now = jiffies;		\
+			if ((_now - _prior) > HZ) {		\
+				printk(type "%s: %s: " fmt,	\
+					MY_NAME, __FUNCTION__ ,	\
+					## arg);		\
+				_prior = _now;			\
+			}					\
+		}						\
+	} while (0)
+
+/**
+ * kobject stuff
+ */
+
+struct subsystem seclvl_subsys;
+
+struct seclvl_obj {
+	char *name;
+	struct list_head slot_list;
+	struct kobject kobj;
+};
+
+/**
+ * There is a seclvl_attribute struct for each file in sysfs.
+ *
+ * In our case, we have one of these structs for "passwd" and another
+ * for "seclvl".
+ */
+struct seclvl_attribute {
+	struct attribute attr;
+	ssize_t(*show) (struct seclvl_obj *, char *);
+	ssize_t(*store) (struct seclvl_obj *, const char *, size_t);
+};
+
+/**
+ * When this function is called, one of the files in sysfs is being
+ * written to.  attribute->store is a function pointer to whatever the
+ * struct seclvl_attribute store function pointer points to.  It is
+ * unique for "passwd" and "seclvl".
+ */
+static ssize_t
+seclvl_attr_store(struct kobject *kobj,
+		  struct attribute *attr, const char *buf, size_t len)
+{
+	struct seclvl_obj *obj = container_of(kobj, struct seclvl_obj, kobj);
+	struct seclvl_attribute *attribute =
+	    container_of(attr, struct seclvl_attribute, attr);
+	return (attribute->store ? attribute->store(obj, buf, len) : 0);
+}
+
+static ssize_t
+seclvl_attr_show(struct kobject *kobj, struct attribute *attr, char *buf)
+{
+	struct seclvl_obj *obj = container_of(kobj, struct seclvl_obj, kobj);
+	struct seclvl_attribute *attribute =
+	    container_of(attr, struct seclvl_attribute, attr);
+	return (attribute->show ? attribute->show(obj, buf) : 0);
+}
+
+/**
+ * Callback function pointers for show and store
+ */
+struct sysfs_ops seclvlfs_sysfs_ops = {
+	.show = seclvl_attr_show,
+	.store = seclvl_attr_store,
+};
+
+static struct kobj_type seclvl_ktype = {
+	.sysfs_ops = &seclvlfs_sysfs_ops
+};
+
+decl_subsys(seclvl, &seclvl_ktype, NULL);
+
+/**
+ * The actual security level.  Ranges between -1 and 2 inclusive.
+ */
+static int seclvl;
+
+/**
+ * flag to keep track of how we were registered
+ */
+static int secondary;
+
+/**
+ * Verifies that the requested secure level is valid, given the current
+ * secure level.
+ */
+static int seclvl_sanity(int reqlvl)
+{
+	if ((reqlvl < -1) || (reqlvl > 2)) {
+		seclvl_printk(1, KERN_WARNING, "Attempt to set seclvl out of "
+			      "range: [%d]\n", reqlvl);
+		return -EINVAL;
+	}
+	if ((seclvl == 0) && (reqlvl == -1))
+		return 0;
+	if (reqlvl < seclvl) {
+		seclvl_printk(1, KERN_WARNING, "Attempt to lower seclvl to "
+			      "[%d]\n", reqlvl);
+		return -EPERM;
+	}
+	return 0;
+}
+
+/**
+ * Called whenever the user reads the sysfs handle to this kernel
+ * object
+ */
+static ssize_t seclvl_read_file(struct seclvl_obj *obj, char *buff)
+{
+	return snprintf(buff, PAGE_SIZE, "%d\n", seclvl);
+}
+
+/**
+ * security level advancement rules:
+ *   Valid levels are -1 through 2, inclusive.
+ *   From -1, stuck.  [ in case compiled into kernel ]
+ *   From 0 or above, can only increment.
+ */
+static int do_seclvl_advance(int newlvl)
+{
+	if (newlvl <= seclvl) {
+		seclvl_printk(1, KERN_WARNING, "Cannot advance to seclvl "
+			      "[%d]\n", newlvl);
+		return -EINVAL;
+	}
+	if (newlvl > 2) {
+		seclvl_printk(1, KERN_WARNING, "Cannot advance to seclvl "
+			      "[%d]\n", newlvl);
+		return -EINVAL;
+	}
+	if (seclvl == -1) {
+		seclvl_printk(1, KERN_WARNING, "Not allowed to advance to "
+			      "seclvl [%d]\n", seclvl);
+		return -EPERM;
+	}
+	seclvl = newlvl;
+	return 0;
+}
+
+/**
+ * Called whenever the user writes to the sysfs handle to this kernel
+ * object (seclvl/seclvl).  It expects a single-digit number.
+ */
+static ssize_t
+seclvl_write_file(struct seclvl_obj *obj, const char *buff, size_t count)
+{
+	unsigned long val;
+	if (count > 2 || (count == 2 && buff[1] != '\n')) {
+		seclvl_printk(1, KERN_WARNING, "Invalid value passed to "
+			      "seclvl: [%s]\n", buff);
+		return -EINVAL;
+	}
+	val = buff[0] - 48;
+	if (seclvl_sanity(val)) {
+		seclvl_printk(1, KERN_WARNING, "Illegal secure level "
+			      "requested: [%d]\n", (int)val);
+		return -EPERM;
+	}
+	if (do_seclvl_advance(val)) {
+		seclvl_printk(0, KERN_ERR, "Failure advancing security level "
+			      "to %lu\n", val);
+	}
+	return count;
+}
+
+/* Generate sysfs_attr_seclvl */
+struct seclvl_attribute sysfs_attr_seclvl =
+__ATTR(seclvl, (S_IFREG | S_IRUGO | S_IWUSR), seclvl_read_file,
+       seclvl_write_file);
+
+static unsigned char hashedPassword[SHA1_DIGEST_SIZE];
+
+/**
+ * Called whenever the user reads the sysfs passwd handle.
+ */
+static ssize_t seclvl_read_passwd(struct seclvl_obj *obj, char *buff)
+{
+	/* So just how good *is* your password? :-) */
+	char tmp[3];
+	int i = 0;
+	buff[0] = '\0';
+	if (hideHash) {
+		/* Security through obscurity */
+		return 0;
+	}
+	while (i < SHA1_DIGEST_SIZE) {
+		snprintf(tmp, 3, "%02x", hashedPassword[i]);
+		strncat(buff, tmp, 2);
+		i++;
+	}
+	strcat(buff, "\n");
+	return ((SHA1_DIGEST_SIZE * 2) + 1);
+}
+
+/**
+ * Converts a block of plaintext of into its SHA1 hashed value.
+ *
+ * It would be nice if crypto had a wrapper to do this for us linear
+ * people...
+ */
+static int
+plaintext_to_sha1(unsigned char *hash, const char *plaintext, int len)
+{
+	char *pgVirtAddr;
+	struct crypto_tfm *tfm;
+	struct scatterlist sg[1];
+	if (len > PAGE_SIZE) {
+		seclvl_printk(0, KERN_ERR, "Plaintext password too large (%d "
+			      "characters).  Largest possible is %lu "
+			      "bytes.\n", len, PAGE_SIZE);
+		return -ENOMEM;
+	}
+	tfm = crypto_alloc_tfm("sha1", 0);
+	if (tfm == NULL) {
+		seclvl_printk(0, KERN_ERR,
+			      "Failed to load transform for SHA1\n");
+		return -ENOSYS;
+	}
+	// Just get a new page; don't play around with page boundaries
+	// and scatterlists.
+	pgVirtAddr = (char *)__get_free_page(GFP_KERNEL);
+	sg[0].page = virt_to_page(pgVirtAddr);
+	sg[0].offset = 0;
+	sg[0].length = len;
+	strncpy(pgVirtAddr, plaintext, len);
+	crypto_digest_init(tfm);
+	crypto_digest_update(tfm, sg, 1);
+	crypto_digest_final(tfm, hash);
+	crypto_free_tfm(tfm);
+	free_page((unsigned long)pgVirtAddr);
+	return 0;
+}
+
+/**
+ * Called whenever the user writes to the sysfs passwd handle to this kernel
+ * object.  It hashes the password and compares the hashed results.
+ */
+static ssize_t
+seclvl_write_passwd(struct seclvl_obj *obj, const char *buff, size_t count)
+{
+	int i;
+	unsigned char tmp[SHA1_DIGEST_SIZE];
+	int rc;
+	int len;
+	if (!*passwd && !*sha1_passwd) {
+		seclvl_printk(0, KERN_ERR, "Attempt to password-unlock the "
+			      "seclvl module, but neither a plain text "
+			      "password nor a SHA1 hashed password was "
+			      "passed in as a module parameter!  This is a "
+			      "bug, since it should not be possible to be in "
+			      "this part of the module; please tell a "
+			      "maintainer about this event.\n");
+		return -EINVAL;
+	}
+	len = strlen(buff);
+	/* ``echo "secret" > seclvl/passwd'' includes a newline */
+	if (buff[len - 1] == '\n') {
+		len--;
+	}
+	/* Hash the password, then compare the hashed values */
+	if ((rc = plaintext_to_sha1(tmp, buff, len))) {
+		seclvl_printk(0, KERN_ERR, "Error hashing password: rc = "
+			      "[%d]\n", rc);
+		return rc;
+	}
+	for (i = 0; i < SHA1_DIGEST_SIZE; i++) {
+		if (hashedPassword[i] != tmp[i]) {
+			return -EPERM;
+		}
+	}
+	seclvl_printk(0, KERN_INFO,
+		      "Password accepted; seclvl reduced to 0.\n");
+	seclvl = 0;
+	return count;
+}
+
+/* Generate sysfs_attr_passwd */
+struct seclvl_attribute sysfs_attr_passwd =
+__ATTR(passwd, (S_IFREG | S_IRUGO | S_IWUSR), seclvl_read_passwd,
+       seclvl_write_passwd);
+
+/**
+ * Explicitely disallow ptrace'ing the init process.
+ */
+static int seclvl_ptrace(struct task_struct *parent, struct task_struct *child)
+{
+	if (seclvl >= 0) {
+		if (child->pid == 1) {
+			seclvl_printk(1, KERN_WARNING, "Attempt to ptrace "
+				      "the init process dissallowed in "
+				      "secure level %d\n", seclvl);
+			return -EPERM;
+		}
+	}
+	return 0;
+}
+
+/**
+ * Capability checks for seclvl.  The majority of the policy
+ * enforcement for seclvl takes place here.
+ */
+static int seclvl_capable(struct task_struct *tsk, int cap)
+{
+	/* init can do anything it wants */
+	if (tsk->pid == 1)
+		return 0;
+
+	switch (seclvl) {
+	case 2:
+		/* fall through */
+	case 1:
+		if (cap == CAP_LINUX_IMMUTABLE) {
+			seclvl_printk(1, KERN_WARNING, "Attempt to modify "
+				      "the IMMUTABLE and/or APPEND extended "
+				      "attribute on a file with the IMMUTABLE "
+				      "and/or APPEND extended attribute set "
+				      "denied in seclvl [%d]\n", seclvl);
+			return -EPERM;
+		} else if (cap == CAP_SYS_RAWIO) {	// Somewhat broad...
+			seclvl_printk(1, KERN_WARNING, "Attempt to perform "
+				      "raw I/O while in secure level [%d] "
+				      "denied\n", seclvl);
+			return -EPERM;
+		} else if (cap == CAP_NET_ADMIN) {
+			seclvl_printk(1, KERN_WARNING, "Attempt to perform "
+				      "network administrative task while "
+				      "in secure level [%d] denied\n", seclvl);
+			return -EPERM;
+		} else if (cap == CAP_SETUID) {
+			seclvl_printk(1, KERN_WARNING, "Attempt to setuid "
+				      "while in secure level [%d] denied\n",
+				      seclvl);
+			return -EPERM;
+		} else if (cap == CAP_SETGID) {
+			seclvl_printk(1, KERN_WARNING, "Attempt to setgid "
+				      "while in secure level [%d] denied\n",
+				      seclvl);
+		} else if (cap == CAP_SYS_MODULE) {
+			seclvl_printk(1, KERN_WARNING, "Attempt to perform "
+				      "a module operation while in secure "
+				      "level [%d] denied\n", seclvl);
+			return -EPERM;
+		}
+		break;
+	default:
+		break;
+	}
+	/* from dummy.c */
+	if (cap_is_fs_cap(cap) ? tsk->fsuid == 0 : tsk->euid == 0)
+		return 0;	/* capability granted */
+	seclvl_printk(1, KERN_WARNING, "Capability denied\n");
+	return -EPERM;		/* capability denied */
+}
+
+/**
+ * Disallow reversing the clock in seclvl > 1
+ */
+static int seclvl_settime(struct timespec *tv, struct timezone *tz)
+{
+	struct timespec now;
+	if (seclvl > 1) {
+		now = current_kernel_time();
+		if (tv->tv_sec < now.tv_sec ||
+		    (tv->tv_sec == now.tv_sec && tv->tv_nsec < now.tv_nsec)) {
+			seclvl_printk(1, KERN_WARNING, "Attempt to decrement "
+				      "time in secure level %d denied: "
+				      "current->pid = [%d], "
+				      "current->group_leader->pid = [%d]\n",
+				      seclvl, current->pid,
+				      current->group_leader->pid);
+			return -EPERM;
+		}		/* if attempt to decrement time */
+	}			/* if seclvl > 1 */
+	return 0;
+}
+
+/* claim the blockdev to exclude mounters, release on file close */
+static int seclvl_bd_claim(struct inode *inode)
+{
+	int holder;
+	struct block_device *bdev = NULL;
+	dev_t dev = inode->i_rdev;
+	bdev = open_by_devnum(dev, FMODE_WRITE);
+	if (bdev) {
+		if (bd_claim(bdev, &holder)) {
+			blkdev_put(bdev);
+			return -EPERM;
+		}
+		/* claimed, mark it to release on close */
+		inode->i_security = current;
+	}
+	return 0;
+}
+
+/* release the blockdev if you claimed it */
+static void seclvl_bd_release(struct inode *inode)
+{
+	if (inode && S_ISBLK(inode->i_mode) && inode->i_security == current) {
+		struct block_device *bdev = inode->i_bdev;
+		if (bdev) {
+			bd_release(bdev);
+			blkdev_put(bdev);
+			inode->i_security = NULL;
+		}
+	}
+}
+
+/**
+ * Security for writes to block devices is regulated by this seclvl
+ * function.  Deny all writes to block devices in seclvl 2.  In
+ * seclvl 1, we only deny writes to *mounted* block devices.
+ */
+static int
+seclvl_inode_permission(struct inode *inode, int mask, struct nameidata *nd)
+{
+	if (current->pid != 1 && S_ISBLK(inode->i_mode) && (mask & MAY_WRITE)) {
+		switch (seclvl) {
+		case 2:
+			seclvl_printk(1, KERN_WARNING, "Write to block device "
+				      "denied in secure level [%d]\n", seclvl);
+			return -EPERM;
+		case 1:
+			if (seclvl_bd_claim(inode)) {
+				seclvl_printk(1, KERN_WARNING,
+					      "Write to mounted block device "
+					      "denied in secure level [%d]\n",
+					      seclvl);
+				return -EPERM;
+			}
+		}
+	}
+	return 0;
+}
+
+/**
+ * The SUID and SGID bits cannot be set in seclvl >= 1
+ */
+static int seclvl_inode_setattr(struct dentry *dentry, struct iattr *iattr)
+{
+	if (seclvl > 0) {
+		if (iattr->ia_valid & ATTR_MODE)
+			if (iattr->ia_mode & S_ISUID ||
+			    iattr->ia_mode & S_ISGID) {
+				seclvl_printk(1, KERN_WARNING, "Attempt to "
+					      "modify SUID or SGID bit "
+					      "denied in seclvl [%d]\n",
+					      seclvl);
+				return -EPERM;
+			}
+	}
+	return 0;
+}
+
+/* release busied block devices */
+static void seclvl_file_free_security(struct file *filp)
+{
+	struct dentry *dentry = filp->f_dentry;
+	struct inode *inode = NULL;
+
+	if (dentry) {
+		inode = dentry->d_inode;
+		seclvl_bd_release(inode);
+	}
+}
+
+/**
+ * Cannot unmount in secure level 2
+ */
+static int seclvl_umount(struct vfsmount *mnt, int flags)
+{
+	if (current->pid == 1) {
+		return 0;
+	}
+	if (seclvl == 2) {
+		seclvl_printk(1, KERN_WARNING, "Attempt to unmount in secure "
+			      "level %d\n", seclvl);
+		return -EPERM;
+	}
+	return 0;
+}
+
+static struct security_operations seclvl_ops = {
+	.ptrace = seclvl_ptrace,
+	.capable = seclvl_capable,
+	.inode_permission = seclvl_inode_permission,
+	.inode_setattr = seclvl_inode_setattr,
+	.file_free_security = seclvl_file_free_security,
+	.settime = seclvl_settime,
+	.sb_umount = seclvl_umount,
+};
+
+/**
+ * Process the password-related module parameters
+ */
+static int processPassword(void)
+{
+	int rc = 0;
+	hashedPassword[0] = '\0';
+	if (*passwd) {
+		if (*sha1_passwd) {
+			seclvl_printk(0, KERN_ERR, "Error: Both "
+				      "passwd and sha1_passwd "
+				      "were set, but they are mutually "
+				      "exclusive.\n");
+			return -EINVAL;
+		}
+		if ((rc = plaintext_to_sha1(hashedPassword, passwd,
+					    strlen(passwd)))) {
+			seclvl_printk(0, KERN_ERR, "Error: SHA1 support not "
+				      "in kernel\n");
+			return rc;
+		}
+		/* All static data goes to the BSS, which zero's the
+		 * plaintext password out for us. */
+	} else if (*sha1_passwd) {	// Base 16
+		int i;
+		i = strlen(sha1_passwd);
+		if (i != (SHA1_DIGEST_SIZE * 2)) {
+			seclvl_printk(0, KERN_ERR, "Received [%d] bytes; "
+				      "expected [%d] for the hexadecimal "
+				      "representation of the SHA1 hash of "
+				      "the password.\n",
+				      i, (SHA1_DIGEST_SIZE * 2));
+			return -EINVAL;
+		}
+		while ((i -= 2) + 2) {
+			unsigned char tmp;
+			tmp = sha1_passwd[i + 2];
+			sha1_passwd[i + 2] = '\0';
+			hashedPassword[i / 2] = (unsigned char)
+			    simple_strtol(&sha1_passwd[i], NULL, 16);
+			sha1_passwd[i + 2] = tmp;
+		}
+	}
+	return 0;
+}
+
+/**
+ * Sysfs registrations
+ */
+static int doSysfsRegistrations(void)
+{
+	int rc = 0;
+	if ((rc = subsystem_register(&seclvl_subsys))) {
+		seclvl_printk(0, KERN_WARNING,
+			      "Error [%d] registering seclvl subsystem\n", rc);
+		return rc;
+	}
+	sysfs_create_file(&seclvl_subsys.kset.kobj, &sysfs_attr_seclvl.attr);
+	if (*passwd || *sha1_passwd) {
+		sysfs_create_file(&seclvl_subsys.kset.kobj,
+				  &sysfs_attr_passwd.attr);
+	}
+	return 0;
+}
+
+/**
+ * Initialize the seclvl module.
+ */
+static int __init seclvl_init(void)
+{
+	int rc = 0;
+	if (verbosity < 0 || verbosity > 1) {
+		printk(KERN_ERR "Error: bad verbosity [%d]; only 0 or 1 "
+		       "are valid values\n", verbosity);
+		rc = -EINVAL;
+		goto exit;
+	}
+	sysfs_attr_seclvl.attr.owner = THIS_MODULE;
+	sysfs_attr_passwd.attr.owner = THIS_MODULE;
+	if (initlvl < -1 || initlvl > 2) {
+		seclvl_printk(0, KERN_ERR, "Error: bad initial securelevel "
+			      "[%d].\n", initlvl);
+		rc = -EINVAL;
+		goto exit;
+	}
+	seclvl = initlvl;
+	if ((rc = processPassword())) {
+		seclvl_printk(0, KERN_ERR, "Error processing the password "
+			      "module parameter(s): rc = [%d]\n", rc);
+		goto exit;
+	}
+	/* register ourselves with the security framework */
+	if (register_security(&seclvl_ops)) {
+		seclvl_printk(0, KERN_ERR,
+			      "seclvl: Failure registering with the "
+			      "kernel.\n");
+		/* try registering with primary module */
+		rc = mod_reg_security(MY_NAME, &seclvl_ops);
+		if (rc) {
+			seclvl_printk(0, KERN_ERR, "seclvl: Failure "
+				      "registering with primary security "
+				      "module.\n");
+			goto exit;
+		}		/* if primary module registered */
+		secondary = 1;
+	}			/* if we registered ourselves with the security framework */
+	if ((rc = doSysfsRegistrations())) {
+		seclvl_printk(0, KERN_ERR, "Error registering with sysfs\n");
+		goto exit;
+	}
+	seclvl_printk(0, KERN_INFO, "seclvl: Successfully initialized.\n");
+ exit:
+	if (rc) {
+		printk(KERN_ERR "seclvl: Error during initialization: rc = "
+		       "[%d]\n", rc);
+	}
+	return rc;
+}
+
+/**
+ * Remove the seclvl module.
+ */
+static void __exit seclvl_exit(void)
+{
+	sysfs_remove_file(&seclvl_subsys.kset.kobj, &sysfs_attr_seclvl.attr);
+	if (*passwd || *sha1_passwd) {
+		sysfs_remove_file(&seclvl_subsys.kset.kobj,
+				  &sysfs_attr_passwd.attr);
+	}
+	subsystem_unregister(&seclvl_subsys);
+	if (secondary == 1) {
+		mod_unreg_security(MY_NAME, &seclvl_ops);
+	} else if (unregister_security(&seclvl_ops)) {
+		seclvl_printk(0, KERN_INFO,
+			      "seclvl: Failure unregistering with the "
+			      "kernel\n");
+	}
+}
+
+module_init(seclvl_init);
+module_exit(seclvl_exit);
+
+MODULE_AUTHOR("Michael A. Halcrow <mike@halcrow.us>");
+MODULE_DESCRIPTION("LSM implementation of the BSD Secure Levels");
+MODULE_LICENSE("GPL");

extra/linux-2.6.10/security/security.c

@@ -0,0 +1,203 @@
+/*
+ * Security plug functions
+ *
+ * Copyright (C) 2001 WireX Communications, Inc <chris@wirex.com>
+ * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com>
+ * Copyright (C) 2001 Networks Associates Technology, Inc <ssmalley@nai.com>
+ *
+ *	This program is free software; you can redistribute it and/or modify
+ *	it under the terms of the GNU General Public License as published by
+ *	the Free Software Foundation; either version 2 of the License, or
+ *	(at your option) any later version.
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/security.h>
+
+#define SECURITY_FRAMEWORK_VERSION	"1.0.0"
+
+/* things that live in dummy.c */
+extern struct security_operations dummy_security_ops;
+extern void security_fixup_ops(struct security_operations *ops);
+
+struct security_operations *security_ops;	/* Initialized to NULL */
+
+static inline int verify(struct security_operations *ops)
+{
+	/* verify the security_operations structure exists */
+	if (!ops)
+		return -EINVAL;
+	security_fixup_ops(ops);
+	return 0;
+}
+
+static void __init do_security_initcalls(void)
+{
+	initcall_t *call;
+	call = &__security_initcall_start;
+	while (call < &__security_initcall_end) {
+		(*call) ();
+		call++;
+	}
+}
+
+/**
+ * security_init - initializes the security framework
+ *
+ * This should be called early in the kernel initialization sequence.
+ */
+int __init security_init(void)
+{
+	printk(KERN_INFO "Security Framework v" SECURITY_FRAMEWORK_VERSION
+	       " initialized\n");
+
+	if (verify(&dummy_security_ops)) {
+		printk(KERN_ERR "%s could not verify "
+		       "dummy_security_ops structure.\n", __FUNCTION__);
+		return -EIO;
+	}
+
+	security_ops = &dummy_security_ops;
+	do_security_initcalls();
+
+	return 0;
+}
+
+/**
+ * register_security - registers a security framework with the kernel
+ * @ops: a pointer to the struct security_options that is to be registered
+ *
+ * This function is to allow a security module to register itself with the
+ * kernel security subsystem.  Some rudimentary checking is done on the @ops
+ * value passed to this function.  A call to unregister_security() should be
+ * done to remove this security_options structure from the kernel.
+ *
+ * If there is already a security module registered with the kernel,
+ * an error will be returned.  Otherwise 0 is returned on success.
+ */
+int register_security(struct security_operations *ops)
+{
+	if (verify(ops)) {
+		printk(KERN_DEBUG "%s could not verify "
+		       "security_operations structure.\n", __FUNCTION__);
+		return -EINVAL;
+	}
+
+	if (security_ops != &dummy_security_ops)
+		return -EAGAIN;
+
+	security_ops = ops;
+
+	return 0;
+}
+
+/**
+ * unregister_security - unregisters a security framework with the kernel
+ * @ops: a pointer to the struct security_options that is to be registered
+ *
+ * This function removes a struct security_operations variable that had
+ * previously been registered with a successful call to register_security().
+ *
+ * If @ops does not match the valued previously passed to register_security()
+ * an error is returned.  Otherwise the default security options is set to the
+ * the dummy_security_ops structure, and 0 is returned.
+ */
+int unregister_security(struct security_operations *ops)
+{
+	if (ops != security_ops) {
+		printk(KERN_INFO "%s: trying to unregister "
+		       "a security_opts structure that is not "
+		       "registered, failing.\n", __FUNCTION__);
+		return -EINVAL;
+	}
+
+	security_ops = &dummy_security_ops;
+
+	return 0;
+}
+
+/**
+ * mod_reg_security - allows security modules to be "stacked"
+ * @name: a pointer to a string with the name of the security_options to be registered
+ * @ops: a pointer to the struct security_options that is to be registered
+ *
+ * This function allows security modules to be stacked if the currently loaded
+ * security module allows this to happen.  It passes the @name and @ops to the
+ * register_security function of the currently loaded security module.
+ *
+ * The return value depends on the currently loaded security module, with 0 as
+ * success.
+ */
+int mod_reg_security(const char *name, struct security_operations *ops)
+{
+	if (verify(ops)) {
+		printk(KERN_INFO "%s could not verify "
+		       "security operations.\n", __FUNCTION__);
+		return -EINVAL;
+	}
+
+	if (ops == security_ops) {
+		printk(KERN_INFO "%s security operations "
+		       "already registered.\n", __FUNCTION__);
+		return -EINVAL;
+	}
+
+	return security_ops->register_security(name, ops);
+}
+
+/**
+ * mod_unreg_security - allows a security module registered with mod_reg_security() to be unloaded
+ * @name: a pointer to a string with the name of the security_options to be removed
+ * @ops: a pointer to the struct security_options that is to be removed
+ *
+ * This function allows security modules that have been successfully registered
+ * with a call to mod_reg_security() to be unloaded from the system.
+ * This calls the currently loaded security module's unregister_security() call
+ * with the @name and @ops variables.
+ *
+ * The return value depends on the currently loaded security module, with 0 as
+ * success.
+ */
+int mod_unreg_security(const char *name, struct security_operations *ops)
+{
+	if (ops == security_ops) {
+		printk(KERN_INFO "%s invalid attempt to unregister "
+		       " primary security ops.\n", __FUNCTION__);
+		return -EINVAL;
+	}
+
+	return security_ops->unregister_security(name, ops);
+}
+
+/**
+ * capable - calls the currently loaded security module's capable() function with the specified capability
+ * @cap: the requested capability level.
+ *
+ * This function calls the currently loaded security module's capable()
+ * function with a pointer to the current task and the specified @cap value.
+ *
+ * This allows the security module to implement the capable function call
+ * however it chooses to.
+ */
+int capable(int cap)
+{
+	if (security_ops->capable(current, cap)) {
+		/* capability denied */
+		return 0;
+	}
+
+	/* capability granted */
+	current->flags |= PF_SUPERPRIV;
+	return 1;
+}
+
+EXPORT_SYMBOL_GPL(register_security);
+EXPORT_SYMBOL_GPL(unregister_security);
+EXPORT_SYMBOL_GPL(mod_reg_security);
+EXPORT_SYMBOL_GPL(mod_unreg_security);
+EXPORT_SYMBOL(capable);
+EXPORT_SYMBOL(security_ops);

extra/linux-2.6.10/security/selinux/Kconfig

@@ -0,0 +1,78 @@
+config SECURITY_SELINUX
+	bool "NSA SELinux Support"
+	depends on SECURITY && NET
+	default n
+	help
+	  This selects NSA Security-Enhanced Linux (SELinux).
+	  You will also need a policy configuration and a labeled filesystem.
+	  You can obtain the policy compiler (checkpolicy), the utility for
+	  labeling filesystems (setfiles), and an example policy configuration
+	  from <http://www.nsa.gov/selinux/>.
+	  If you are unsure how to answer this question, answer N.
+
+config SECURITY_SELINUX_BOOTPARAM
+	bool "NSA SELinux boot parameter"
+	depends on SECURITY_SELINUX
+	default n
+	help
+	  This option adds a kernel parameter 'selinux', which allows SELinux
+	  to be disabled at boot.  If this option is selected, SELinux
+	  functionality can be disabled with selinux=0 on the kernel
+	  command line.  The purpose of this option is to allow a single
+	  kernel image to be distributed with SELinux built in, but not
+	  necessarily enabled.
+
+	  If you are unsure how to answer this question, answer N.
+
+config SECURITY_SELINUX_BOOTPARAM_VALUE
+	int "NSA SELinux boot parameter default value"
+	depends on SECURITY_SELINUX_BOOTPARAM
+	range 0 1
+	default 1
+	help
+	  This option sets the default value for the kernel parameter
+	  'selinux', which allows SELinux to be disabled at boot.  If this
+	  option is set to 0 (zero), the SELinux kernel parameter will
+	  default to 0, disabling SELinux at bootup.  If this option is
+	  set to 1 (one), the SELinux kernel paramater will default to 1,
+	  enabling SELinux at bootup.
+
+	  If you are unsure how to answer this question, answer 1.
+
+config SECURITY_SELINUX_DISABLE
+	bool "NSA SELinux runtime disable"
+	depends on SECURITY_SELINUX
+	default n
+	help
+	  This option enables writing to a selinuxfs node 'disable', which
+	  allows SELinux to be disabled at runtime prior to the policy load.
+	  SELinux will then remain disabled until the next boot.
+	  This option is similar to the selinux=0 boot parameter, but is to
+	  support runtime disabling of SELinux, e.g. from /sbin/init, for
+	  portability across platforms where boot parameters are difficult
+	  to employ.
+
+	  If you are unsure how to answer this question, answer N.
+
+config SECURITY_SELINUX_DEVELOP
+	bool "NSA SELinux Development Support"
+	depends on SECURITY_SELINUX
+	default y
+	help
+	  This enables the development support option of NSA SELinux,
+	  which is useful for experimenting with SELinux and developing
+	  policies.  If unsure, say Y.  With this option enabled, the
+	  kernel will start in permissive mode (log everything, deny nothing)
+	  unless you specify enforcing=1 on the kernel command line.  You
+	  can interactively toggle the kernel between enforcing mode and
+	  permissive mode (if permitted by the policy) via /selinux/enforce.
+
+config SECURITY_SELINUX_MLS
+	bool "NSA SELinux MLS policy (EXPERIMENTAL)"
+	depends on SECURITY_SELINUX && EXPERIMENTAL
+	default n
+	help
+	  This enables the NSA SELinux Multi-Level Security (MLS) policy in
+	  addition to the default RBAC/TE policy.  This policy is
+	  experimental and has not been configured for use.  Unless you
+	  specifically want to experiment with MLS, say N.

extra/linux-2.6.10/security/selinux/Makefile

@@ -0,0 +1,12 @@
+#
+# Makefile for building the SELinux module as part of the kernel tree.
+#
+
+obj-$(CONFIG_SECURITY_SELINUX) := selinux.o ss/
+
+selinux-y := avc.o hooks.o selinuxfs.o netlink.o nlmsgtab.o
+
+selinux-$(CONFIG_SECURITY_NETWORK) += netif.o
+
+EXTRA_CFLAGS += -Isecurity/selinux/include
+

extra/linux-2.6.10/security/selinux/include/av_inherit.h

@@ -0,0 +1,44 @@
+/* This file is automatically generated.  Do not edit. */
+/* FLASK */
+
+struct av_inherit
+{
+    u16 tclass;
+    char **common_pts;
+    u32 common_base;
+};
+
+static struct av_inherit av_inherit[] = {
+   { SECCLASS_DIR, common_file_perm_to_string, 0x00020000UL },
+   { SECCLASS_FILE, common_file_perm_to_string, 0x00020000UL },
+   { SECCLASS_LNK_FILE, common_file_perm_to_string, 0x00020000UL },
+   { SECCLASS_CHR_FILE, common_file_perm_to_string, 0x00020000UL },
+   { SECCLASS_BLK_FILE, common_file_perm_to_string, 0x00020000UL },
+   { SECCLASS_SOCK_FILE, common_file_perm_to_string, 0x00020000UL },
+   { SECCLASS_FIFO_FILE, common_file_perm_to_string, 0x00020000UL },
+   { SECCLASS_SOCKET, common_socket_perm_to_string, 0x00400000UL },
+   { SECCLASS_TCP_SOCKET, common_socket_perm_to_string, 0x00400000UL },
+   { SECCLASS_UDP_SOCKET, common_socket_perm_to_string, 0x00400000UL },
+   { SECCLASS_RAWIP_SOCKET, common_socket_perm_to_string, 0x00400000UL },
+   { SECCLASS_NETLINK_SOCKET, common_socket_perm_to_string, 0x00400000UL },
+   { SECCLASS_PACKET_SOCKET, common_socket_perm_to_string, 0x00400000UL },
+   { SECCLASS_KEY_SOCKET, common_socket_perm_to_string, 0x00400000UL },
+   { SECCLASS_UNIX_STREAM_SOCKET, common_socket_perm_to_string, 0x00400000UL },
+   { SECCLASS_UNIX_DGRAM_SOCKET, common_socket_perm_to_string, 0x00400000UL },
+   { SECCLASS_IPC, common_ipc_perm_to_string, 0x00000200UL },
+   { SECCLASS_SEM, common_ipc_perm_to_string, 0x00000200UL },
+   { SECCLASS_MSGQ, common_ipc_perm_to_string, 0x00000200UL },
+   { SECCLASS_SHM, common_ipc_perm_to_string, 0x00000200UL },
+   { SECCLASS_NETLINK_ROUTE_SOCKET, common_socket_perm_to_string, 0x00400000UL },
+   { SECCLASS_NETLINK_FIREWALL_SOCKET, common_socket_perm_to_string, 0x00400000UL },
+   { SECCLASS_NETLINK_TCPDIAG_SOCKET, common_socket_perm_to_string, 0x00400000UL },
+   { SECCLASS_NETLINK_NFLOG_SOCKET, common_socket_perm_to_string, 0x00400000UL },
+   { SECCLASS_NETLINK_XFRM_SOCKET, common_socket_perm_to_string, 0x00400000UL },
+   { SECCLASS_NETLINK_SELINUX_SOCKET, common_socket_perm_to_string, 0x00400000UL },
+   { SECCLASS_NETLINK_AUDIT_SOCKET, common_socket_perm_to_string, 0x00400000UL },
+   { SECCLASS_NETLINK_IP6FW_SOCKET, common_socket_perm_to_string, 0x00400000UL },
+   { SECCLASS_NETLINK_DNRT_SOCKET, common_socket_perm_to_string, 0x00400000UL },
+};
+
+
+/* FLASK */

extra/linux-2.6.10/security/selinux/include/av_perm_to_string.h

@@ -0,0 +1,225 @@
+/* This file is automatically generated.  Do not edit. */
+/* FLASK */
+
+struct av_perm_to_string
+{
+    u16 tclass;
+    u32 value;
+    char *name;
+};
+
+static struct av_perm_to_string av_perm_to_string[] = {
+   { SECCLASS_FILESYSTEM, FILESYSTEM__MOUNT, "mount" },
+   { SECCLASS_FILESYSTEM, FILESYSTEM__REMOUNT, "remount" },
+   { SECCLASS_FILESYSTEM, FILESYSTEM__UNMOUNT, "unmount" },
+   { SECCLASS_FILESYSTEM, FILESYSTEM__GETATTR, "getattr" },
+   { SECCLASS_FILESYSTEM, FILESYSTEM__RELABELFROM, "relabelfrom" },
+   { SECCLASS_FILESYSTEM, FILESYSTEM__RELABELTO, "relabelto" },
+   { SECCLASS_FILESYSTEM, FILESYSTEM__TRANSITION, "transition" },
+   { SECCLASS_FILESYSTEM, FILESYSTEM__ASSOCIATE, "associate" },
+   { SECCLASS_FILESYSTEM, FILESYSTEM__QUOTAMOD, "quotamod" },
+   { SECCLASS_FILESYSTEM, FILESYSTEM__QUOTAGET, "quotaget" },
+   { SECCLASS_DIR, DIR__ADD_NAME, "add_name" },
+   { SECCLASS_DIR, DIR__REMOVE_NAME, "remove_name" },
+   { SECCLASS_DIR, DIR__REPARENT, "reparent" },
+   { SECCLASS_DIR, DIR__SEARCH, "search" },
+   { SECCLASS_DIR, DIR__RMDIR, "rmdir" },
+   { SECCLASS_FILE, FILE__EXECUTE_NO_TRANS, "execute_no_trans" },
+   { SECCLASS_FILE, FILE__ENTRYPOINT, "entrypoint" },
+   { SECCLASS_FD, FD__USE, "use" },
+   { SECCLASS_TCP_SOCKET, TCP_SOCKET__CONNECTTO, "connectto" },
+   { SECCLASS_TCP_SOCKET, TCP_SOCKET__NEWCONN, "newconn" },
+   { SECCLASS_TCP_SOCKET, TCP_SOCKET__ACCEPTFROM, "acceptfrom" },
+   { SECCLASS_TCP_SOCKET, TCP_SOCKET__NODE_BIND, "node_bind" },
+   { SECCLASS_UDP_SOCKET, UDP_SOCKET__NODE_BIND, "node_bind" },
+   { SECCLASS_RAWIP_SOCKET, RAWIP_SOCKET__NODE_BIND, "node_bind" },
+   { SECCLASS_NODE, NODE__TCP_RECV, "tcp_recv" },
+   { SECCLASS_NODE, NODE__TCP_SEND, "tcp_send" },
+   { SECCLASS_NODE, NODE__UDP_RECV, "udp_recv" },
+   { SECCLASS_NODE, NODE__UDP_SEND, "udp_send" },
+   { SECCLASS_NODE, NODE__RAWIP_RECV, "rawip_recv" },
+   { SECCLASS_NODE, NODE__RAWIP_SEND, "rawip_send" },
+   { SECCLASS_NODE, NODE__ENFORCE_DEST, "enforce_dest" },
+   { SECCLASS_NETIF, NETIF__TCP_RECV, "tcp_recv" },
+   { SECCLASS_NETIF, NETIF__TCP_SEND, "tcp_send" },
+   { SECCLASS_NETIF, NETIF__UDP_RECV, "udp_recv" },
+   { SECCLASS_NETIF, NETIF__UDP_SEND, "udp_send" },
+   { SECCLASS_NETIF, NETIF__RAWIP_RECV, "rawip_recv" },
+   { SECCLASS_NETIF, NETIF__RAWIP_SEND, "rawip_send" },
+   { SECCLASS_UNIX_STREAM_SOCKET, UNIX_STREAM_SOCKET__CONNECTTO, "connectto" },
+   { SECCLASS_UNIX_STREAM_SOCKET, UNIX_STREAM_SOCKET__NEWCONN, "newconn" },
+   { SECCLASS_UNIX_STREAM_SOCKET, UNIX_STREAM_SOCKET__ACCEPTFROM, "acceptfrom" },
+   { SECCLASS_PROCESS, PROCESS__FORK, "fork" },
+   { SECCLASS_PROCESS, PROCESS__TRANSITION, "transition" },
+   { SECCLASS_PROCESS, PROCESS__SIGCHLD, "sigchld" },
+   { SECCLASS_PROCESS, PROCESS__SIGKILL, "sigkill" },
+   { SECCLASS_PROCESS, PROCESS__SIGSTOP, "sigstop" },
+   { SECCLASS_PROCESS, PROCESS__SIGNULL, "signull" },
+   { SECCLASS_PROCESS, PROCESS__SIGNAL, "signal" },
+   { SECCLASS_PROCESS, PROCESS__PTRACE, "ptrace" },
+   { SECCLASS_PROCESS, PROCESS__GETSCHED, "getsched" },
+   { SECCLASS_PROCESS, PROCESS__SETSCHED, "setsched" },
+   { SECCLASS_PROCESS, PROCESS__GETSESSION, "getsession" },
+   { SECCLASS_PROCESS, PROCESS__GETPGID, "getpgid" },
+   { SECCLASS_PROCESS, PROCESS__SETPGID, "setpgid" },
+   { SECCLASS_PROCESS, PROCESS__GETCAP, "getcap" },
+   { SECCLASS_PROCESS, PROCESS__SETCAP, "setcap" },
+   { SECCLASS_PROCESS, PROCESS__SHARE, "share" },
+   { SECCLASS_PROCESS, PROCESS__GETATTR, "getattr" },
+   { SECCLASS_PROCESS, PROCESS__SETEXEC, "setexec" },
+   { SECCLASS_PROCESS, PROCESS__SETFSCREATE, "setfscreate" },
+   { SECCLASS_PROCESS, PROCESS__NOATSECURE, "noatsecure" },
+   { SECCLASS_PROCESS, PROCESS__SIGINH, "siginh" },
+   { SECCLASS_PROCESS, PROCESS__SETRLIMIT, "setrlimit" },
+   { SECCLASS_PROCESS, PROCESS__RLIMITINH, "rlimitinh" },
+   { SECCLASS_MSGQ, MSGQ__ENQUEUE, "enqueue" },
+   { SECCLASS_MSG, MSG__SEND, "send" },
+   { SECCLASS_MSG, MSG__RECEIVE, "receive" },
+   { SECCLASS_SHM, SHM__LOCK, "lock" },
+   { SECCLASS_SECURITY, SECURITY__COMPUTE_AV, "compute_av" },
+   { SECCLASS_SECURITY, SECURITY__COMPUTE_CREATE, "compute_create" },
+   { SECCLASS_SECURITY, SECURITY__COMPUTE_MEMBER, "compute_member" },
+   { SECCLASS_SECURITY, SECURITY__CHECK_CONTEXT, "check_context" },
+   { SECCLASS_SECURITY, SECURITY__LOAD_POLICY, "load_policy" },
+   { SECCLASS_SECURITY, SECURITY__COMPUTE_RELABEL, "compute_relabel" },
+   { SECCLASS_SECURITY, SECURITY__COMPUTE_USER, "compute_user" },
+   { SECCLASS_SECURITY, SECURITY__SETENFORCE, "setenforce" },
+   { SECCLASS_SECURITY, SECURITY__SETBOOL, "setbool" },
+   { SECCLASS_SYSTEM, SYSTEM__IPC_INFO, "ipc_info" },
+   { SECCLASS_SYSTEM, SYSTEM__SYSLOG_READ, "syslog_read" },
+   { SECCLASS_SYSTEM, SYSTEM__SYSLOG_MOD, "syslog_mod" },
+   { SECCLASS_SYSTEM, SYSTEM__SYSLOG_CONSOLE, "syslog_console" },
+   { SECCLASS_CAPABILITY, CAPABILITY__CHOWN, "chown" },
+   { SECCLASS_CAPABILITY, CAPABILITY__DAC_OVERRIDE, "dac_override" },
+   { SECCLASS_CAPABILITY, CAPABILITY__DAC_READ_SEARCH, "dac_read_search" },
+   { SECCLASS_CAPABILITY, CAPABILITY__FOWNER, "fowner" },
+   { SECCLASS_CAPABILITY, CAPABILITY__FSETID, "fsetid" },
+   { SECCLASS_CAPABILITY, CAPABILITY__KILL, "kill" },
+   { SECCLASS_CAPABILITY, CAPABILITY__SETGID, "setgid" },
+   { SECCLASS_CAPABILITY, CAPABILITY__SETUID, "setuid" },
+   { SECCLASS_CAPABILITY, CAPABILITY__SETPCAP, "setpcap" },
+   { SECCLASS_CAPABILITY, CAPABILITY__LINUX_IMMUTABLE, "linux_immutable" },
+   { SECCLASS_CAPABILITY, CAPABILITY__NET_BIND_SERVICE, "net_bind_service" },
+   { SECCLASS_CAPABILITY, CAPABILITY__NET_BROADCAST, "net_broadcast" },
+   { SECCLASS_CAPABILITY, CAPABILITY__NET_ADMIN, "net_admin" },
+   { SECCLASS_CAPABILITY, CAPABILITY__NET_RAW, "net_raw" },
+   { SECCLASS_CAPABILITY, CAPABILITY__IPC_LOCK, "ipc_lock" },
+   { SECCLASS_CAPABILITY, CAPABILITY__IPC_OWNER, "ipc_owner" },
+   { SECCLASS_CAPABILITY, CAPABILITY__SYS_MODULE, "sys_module" },
+   { SECCLASS_CAPABILITY, CAPABILITY__SYS_RAWIO, "sys_rawio" },
+   { SECCLASS_CAPABILITY, CAPABILITY__SYS_CHROOT, "sys_chroot" },
+   { SECCLASS_CAPABILITY, CAPABILITY__SYS_PTRACE, "sys_ptrace" },
+   { SECCLASS_CAPABILITY, CAPABILITY__SYS_PACCT, "sys_pacct" },
+   { SECCLASS_CAPABILITY, CAPABILITY__SYS_ADMIN, "sys_admin" },
+   { SECCLASS_CAPABILITY, CAPABILITY__SYS_BOOT, "sys_boot" },
+   { SECCLASS_CAPABILITY, CAPABILITY__SYS_NICE, "sys_nice" },
+   { SECCLASS_CAPABILITY, CAPABILITY__SYS_RESOURCE, "sys_resource" },
+   { SECCLASS_CAPABILITY, CAPABILITY__SYS_TIME, "sys_time" },
+   { SECCLASS_CAPABILITY, CAPABILITY__SYS_TTY_CONFIG, "sys_tty_config" },
+   { SECCLASS_CAPABILITY, CAPABILITY__MKNOD, "mknod" },
+   { SECCLASS_CAPABILITY, CAPABILITY__LEASE, "lease" },
+   { SECCLASS_PASSWD, PASSWD__PASSWD, "passwd" },
+   { SECCLASS_PASSWD, PASSWD__CHFN, "chfn" },
+   { SECCLASS_PASSWD, PASSWD__CHSH, "chsh" },
+   { SECCLASS_PASSWD, PASSWD__ROOTOK, "rootok" },
+   { SECCLASS_DRAWABLE, DRAWABLE__CREATE, "create" },
+   { SECCLASS_DRAWABLE, DRAWABLE__DESTROY, "destroy" },
+   { SECCLASS_DRAWABLE, DRAWABLE__DRAW, "draw" },
+   { SECCLASS_DRAWABLE, DRAWABLE__COPY, "copy" },
+   { SECCLASS_DRAWABLE, DRAWABLE__GETATTR, "getattr" },
+   { SECCLASS_GC, GC__CREATE, "create" },
+   { SECCLASS_GC, GC__FREE, "free" },
+   { SECCLASS_GC, GC__GETATTR, "getattr" },
+   { SECCLASS_GC, GC__SETATTR, "setattr" },
+   { SECCLASS_WINDOW, WINDOW__ADDCHILD, "addchild" },
+   { SECCLASS_WINDOW, WINDOW__CREATE, "create" },
+   { SECCLASS_WINDOW, WINDOW__DESTROY, "destroy" },
+   { SECCLASS_WINDOW, WINDOW__MAP, "map" },
+   { SECCLASS_WINDOW, WINDOW__UNMAP, "unmap" },
+   { SECCLASS_WINDOW, WINDOW__CHSTACK, "chstack" },
+   { SECCLASS_WINDOW, WINDOW__CHPROPLIST, "chproplist" },
+   { SECCLASS_WINDOW, WINDOW__CHPROP, "chprop" },
+   { SECCLASS_WINDOW, WINDOW__LISTPROP, "listprop" },
+   { SECCLASS_WINDOW, WINDOW__GETATTR, "getattr" },
+   { SECCLASS_WINDOW, WINDOW__SETATTR, "setattr" },
+   { SECCLASS_WINDOW, WINDOW__SETFOCUS, "setfocus" },
+   { SECCLASS_WINDOW, WINDOW__MOVE, "move" },
+   { SECCLASS_WINDOW, WINDOW__CHSELECTION, "chselection" },
+   { SECCLASS_WINDOW, WINDOW__CHPARENT, "chparent" },
+   { SECCLASS_WINDOW, WINDOW__CTRLLIFE, "ctrllife" },
+   { SECCLASS_WINDOW, WINDOW__ENUMERATE, "enumerate" },
+   { SECCLASS_WINDOW, WINDOW__TRANSPARENT, "transparent" },
+   { SECCLASS_WINDOW, WINDOW__MOUSEMOTION, "mousemotion" },
+   { SECCLASS_WINDOW, WINDOW__CLIENTCOMEVENT, "clientcomevent" },
+   { SECCLASS_WINDOW, WINDOW__INPUTEVENT, "inputevent" },
+   { SECCLASS_WINDOW, WINDOW__DRAWEVENT, "drawevent" },
+   { SECCLASS_WINDOW, WINDOW__WINDOWCHANGEEVENT, "windowchangeevent" },
+   { SECCLASS_WINDOW, WINDOW__WINDOWCHANGEREQUEST, "windowchangerequest" },
+   { SECCLASS_WINDOW, WINDOW__SERVERCHANGEEVENT, "serverchangeevent" },
+   { SECCLASS_WINDOW, WINDOW__EXTENSIONEVENT, "extensionevent" },
+   { SECCLASS_FONT, FONT__LOAD, "load" },
+   { SECCLASS_FONT, FONT__FREE, "free" },
+   { SECCLASS_FONT, FONT__GETATTR, "getattr" },
+   { SECCLASS_FONT, FONT__USE, "use" },
+   { SECCLASS_COLORMAP, COLORMAP__CREATE, "create" },
+   { SECCLASS_COLORMAP, COLORMAP__FREE, "free" },
+   { SECCLASS_COLORMAP, COLORMAP__INSTALL, "install" },
+   { SECCLASS_COLORMAP, COLORMAP__UNINSTALL, "uninstall" },
+   { SECCLASS_COLORMAP, COLORMAP__LIST, "list" },
+   { SECCLASS_COLORMAP, COLORMAP__READ, "read" },
+   { SECCLASS_COLORMAP, COLORMAP__STORE, "store" },
+   { SECCLASS_COLORMAP, COLORMAP__GETATTR, "getattr" },
+   { SECCLASS_COLORMAP, COLORMAP__SETATTR, "setattr" },
+   { SECCLASS_PROPERTY, PROPERTY__CREATE, "create" },
+   { SECCLASS_PROPERTY, PROPERTY__FREE, "free" },
+   { SECCLASS_PROPERTY, PROPERTY__READ, "read" },
+   { SECCLASS_PROPERTY, PROPERTY__WRITE, "write" },
+   { SECCLASS_CURSOR, CURSOR__CREATE, "create" },
+   { SECCLASS_CURSOR, CURSOR__CREATEGLYPH, "createglyph" },
+   { SECCLASS_CURSOR, CURSOR__FREE, "free" },
+   { SECCLASS_CURSOR, CURSOR__ASSIGN, "assign" },
+   { SECCLASS_CURSOR, CURSOR__SETATTR, "setattr" },
+   { SECCLASS_XCLIENT, XCLIENT__KILL, "kill" },
+   { SECCLASS_XINPUT, XINPUT__LOOKUP, "lookup" },
+   { SECCLASS_XINPUT, XINPUT__GETATTR, "getattr" },
+   { SECCLASS_XINPUT, XINPUT__SETATTR, "setattr" },
+   { SECCLASS_XINPUT, XINPUT__SETFOCUS, "setfocus" },
+   { SECCLASS_XINPUT, XINPUT__WARPPOINTER, "warppointer" },
+   { SECCLASS_XINPUT, XINPUT__ACTIVEGRAB, "activegrab" },
+   { SECCLASS_XINPUT, XINPUT__PASSIVEGRAB, "passivegrab" },
+   { SECCLASS_XINPUT, XINPUT__UNGRAB, "ungrab" },
+   { SECCLASS_XINPUT, XINPUT__BELL, "bell" },
+   { SECCLASS_XINPUT, XINPUT__MOUSEMOTION, "mousemotion" },
+   { SECCLASS_XINPUT, XINPUT__RELABELINPUT, "relabelinput" },
+   { SECCLASS_XSERVER, XSERVER__SCREENSAVER, "screensaver" },
+   { SECCLASS_XSERVER, XSERVER__GETHOSTLIST, "gethostlist" },
+   { SECCLASS_XSERVER, XSERVER__SETHOSTLIST, "sethostlist" },
+   { SECCLASS_XSERVER, XSERVER__GETFONTPATH, "getfontpath" },
+   { SECCLASS_XSERVER, XSERVER__SETFONTPATH, "setfontpath" },
+   { SECCLASS_XSERVER, XSERVER__GETATTR, "getattr" },
+   { SECCLASS_XSERVER, XSERVER__GRAB, "grab" },
+   { SECCLASS_XSERVER, XSERVER__UNGRAB, "ungrab" },
+   { SECCLASS_XEXTENSION, XEXTENSION__QUERY, "query" },
+   { SECCLASS_XEXTENSION, XEXTENSION__USE, "use" },
+   { SECCLASS_PAX, PAX__PAGEEXEC, "pageexec" },
+   { SECCLASS_PAX, PAX__EMUTRAMP, "emutramp" },
+   { SECCLASS_PAX, PAX__MPROTECT, "mprotect" },
+   { SECCLASS_PAX, PAX__RANDMMAP, "randmmap" },
+   { SECCLASS_PAX, PAX__RANDEXEC, "randexec" },
+   { SECCLASS_PAX, PAX__SEGMEXEC, "segmexec" },
+   { SECCLASS_NETLINK_ROUTE_SOCKET, NETLINK_ROUTE_SOCKET__NLMSG_READ, "nlmsg_read" },
+   { SECCLASS_NETLINK_ROUTE_SOCKET, NETLINK_ROUTE_SOCKET__NLMSG_WRITE, "nlmsg_write" },
+   { SECCLASS_NETLINK_FIREWALL_SOCKET, NETLINK_FIREWALL_SOCKET__NLMSG_READ, "nlmsg_read" },
+   { SECCLASS_NETLINK_FIREWALL_SOCKET, NETLINK_FIREWALL_SOCKET__NLMSG_WRITE, "nlmsg_write" },
+   { SECCLASS_NETLINK_TCPDIAG_SOCKET, NETLINK_TCPDIAG_SOCKET__NLMSG_READ, "nlmsg_read" },
+   { SECCLASS_NETLINK_TCPDIAG_SOCKET, NETLINK_TCPDIAG_SOCKET__NLMSG_WRITE, "nlmsg_write" },
+   { SECCLASS_NETLINK_XFRM_SOCKET, NETLINK_XFRM_SOCKET__NLMSG_READ, "nlmsg_read" },
+   { SECCLASS_NETLINK_XFRM_SOCKET, NETLINK_XFRM_SOCKET__NLMSG_WRITE, "nlmsg_write" },
+   { SECCLASS_NETLINK_AUDIT_SOCKET, NETLINK_AUDIT_SOCKET__NLMSG_READ, "nlmsg_read" },
+   { SECCLASS_NETLINK_AUDIT_SOCKET, NETLINK_AUDIT_SOCKET__NLMSG_WRITE, "nlmsg_write" },
+   { SECCLASS_NETLINK_IP6FW_SOCKET, NETLINK_IP6FW_SOCKET__NLMSG_READ, "nlmsg_read" },
+   { SECCLASS_NETLINK_IP6FW_SOCKET, NETLINK_IP6FW_SOCKET__NLMSG_WRITE, "nlmsg_write" },
+};
+
+
+/* FLASK */

extra/linux-2.6.10/security/selinux/include/av_permissions.h

@@ -0,0 +1,880 @@
+/* This file is automatically generated.  Do not edit. */
+/* FLASK */
+
+#define COMMON_FILE__IOCTL                               0x00000001UL
+#define COMMON_FILE__READ                                0x00000002UL
+#define COMMON_FILE__WRITE                               0x00000004UL
+#define COMMON_FILE__CREATE                              0x00000008UL
+#define COMMON_FILE__GETATTR                             0x00000010UL
+#define COMMON_FILE__SETATTR                             0x00000020UL
+#define COMMON_FILE__LOCK                                0x00000040UL
+#define COMMON_FILE__RELABELFROM                         0x00000080UL
+#define COMMON_FILE__RELABELTO                           0x00000100UL
+#define COMMON_FILE__APPEND                              0x00000200UL
+#define COMMON_FILE__UNLINK                              0x00000400UL
+#define COMMON_FILE__LINK                                0x00000800UL
+#define COMMON_FILE__RENAME                              0x00001000UL
+#define COMMON_FILE__EXECUTE                             0x00002000UL
+#define COMMON_FILE__SWAPON                              0x00004000UL
+#define COMMON_FILE__QUOTAON                             0x00008000UL
+#define COMMON_FILE__MOUNTON                             0x00010000UL
+
+#define COMMON_SOCKET__IOCTL                             0x00000001UL
+#define COMMON_SOCKET__READ                              0x00000002UL
+#define COMMON_SOCKET__WRITE                             0x00000004UL
+#define COMMON_SOCKET__CREATE                            0x00000008UL
+#define COMMON_SOCKET__GETATTR                           0x00000010UL
+#define COMMON_SOCKET__SETATTR                           0x00000020UL
+#define COMMON_SOCKET__LOCK                              0x00000040UL
+#define COMMON_SOCKET__RELABELFROM                       0x00000080UL
+#define COMMON_SOCKET__RELABELTO                         0x00000100UL
+#define COMMON_SOCKET__APPEND                            0x00000200UL
+#define COMMON_SOCKET__BIND                              0x00000400UL
+#define COMMON_SOCKET__CONNECT                           0x00000800UL
+#define COMMON_SOCKET__LISTEN                            0x00001000UL
+#define COMMON_SOCKET__ACCEPT                            0x00002000UL
+#define COMMON_SOCKET__GETOPT                            0x00004000UL
+#define COMMON_SOCKET__SETOPT                            0x00008000UL
+#define COMMON_SOCKET__SHUTDOWN                          0x00010000UL
+#define COMMON_SOCKET__RECVFROM                          0x00020000UL
+#define COMMON_SOCKET__SENDTO                            0x00040000UL
+#define COMMON_SOCKET__RECV_MSG                          0x00080000UL
+#define COMMON_SOCKET__SEND_MSG                          0x00100000UL
+#define COMMON_SOCKET__NAME_BIND                         0x00200000UL
+
+#define COMMON_IPC__CREATE                               0x00000001UL
+#define COMMON_IPC__DESTROY                              0x00000002UL
+#define COMMON_IPC__GETATTR                              0x00000004UL
+#define COMMON_IPC__SETATTR                              0x00000008UL
+#define COMMON_IPC__READ                                 0x00000010UL
+#define COMMON_IPC__WRITE                                0x00000020UL
+#define COMMON_IPC__ASSOCIATE                            0x00000040UL
+#define COMMON_IPC__UNIX_READ                            0x00000080UL
+#define COMMON_IPC__UNIX_WRITE                           0x00000100UL
+
+#define FILESYSTEM__MOUNT                         0x00000001UL
+#define FILESYSTEM__REMOUNT                       0x00000002UL
+#define FILESYSTEM__UNMOUNT                       0x00000004UL
+#define FILESYSTEM__GETATTR                       0x00000008UL
+#define FILESYSTEM__RELABELFROM                   0x00000010UL
+#define FILESYSTEM__RELABELTO                     0x00000020UL
+#define FILESYSTEM__TRANSITION                    0x00000040UL
+#define FILESYSTEM__ASSOCIATE                     0x00000080UL
+#define FILESYSTEM__QUOTAMOD                      0x00000100UL
+#define FILESYSTEM__QUOTAGET                      0x00000200UL
+
+#define DIR__IOCTL                                0x00000001UL
+#define DIR__READ                                 0x00000002UL
+#define DIR__WRITE                                0x00000004UL
+#define DIR__CREATE                               0x00000008UL
+#define DIR__GETATTR                              0x00000010UL
+#define DIR__SETATTR                              0x00000020UL
+#define DIR__LOCK                                 0x00000040UL
+#define DIR__RELABELFROM                          0x00000080UL
+#define DIR__RELABELTO                            0x00000100UL
+#define DIR__APPEND                               0x00000200UL
+#define DIR__UNLINK                               0x00000400UL
+#define DIR__LINK                                 0x00000800UL
+#define DIR__RENAME                               0x00001000UL
+#define DIR__EXECUTE                              0x00002000UL
+#define DIR__SWAPON                               0x00004000UL
+#define DIR__QUOTAON                              0x00008000UL
+#define DIR__MOUNTON                              0x00010000UL
+
+#define DIR__ADD_NAME                             0x00020000UL
+#define DIR__REMOVE_NAME                          0x00040000UL
+#define DIR__REPARENT                             0x00080000UL
+#define DIR__SEARCH                               0x00100000UL
+#define DIR__RMDIR                                0x00200000UL
+
+#define FILE__IOCTL                               0x00000001UL
+#define FILE__READ                                0x00000002UL
+#define FILE__WRITE                               0x00000004UL
+#define FILE__CREATE                              0x00000008UL
+#define FILE__GETATTR                             0x00000010UL
+#define FILE__SETATTR                             0x00000020UL
+#define FILE__LOCK                                0x00000040UL
+#define FILE__RELABELFROM                         0x00000080UL
+#define FILE__RELABELTO                           0x00000100UL
+#define FILE__APPEND                              0x00000200UL
+#define FILE__UNLINK                              0x00000400UL
+#define FILE__LINK                                0x00000800UL
+#define FILE__RENAME                              0x00001000UL
+#define FILE__EXECUTE                             0x00002000UL
+#define FILE__SWAPON                              0x00004000UL
+#define FILE__QUOTAON                             0x00008000UL
+#define FILE__MOUNTON                             0x00010000UL
+
+#define FILE__EXECUTE_NO_TRANS                    0x00020000UL
+#define FILE__ENTRYPOINT                          0x00040000UL
+
+#define LNK_FILE__IOCTL                           0x00000001UL
+#define LNK_FILE__READ                            0x00000002UL
+#define LNK_FILE__WRITE                           0x00000004UL
+#define LNK_FILE__CREATE                          0x00000008UL
+#define LNK_FILE__GETATTR                         0x00000010UL
+#define LNK_FILE__SETATTR                         0x00000020UL
+#define LNK_FILE__LOCK                            0x00000040UL
+#define LNK_FILE__RELABELFROM                     0x00000080UL
+#define LNK_FILE__RELABELTO                       0x00000100UL
+#define LNK_FILE__APPEND                          0x00000200UL
+#define LNK_FILE__UNLINK                          0x00000400UL
+#define LNK_FILE__LINK                            0x00000800UL
+#define LNK_FILE__RENAME                          0x00001000UL
+#define LNK_FILE__EXECUTE                         0x00002000UL
+#define LNK_FILE__SWAPON                          0x00004000UL
+#define LNK_FILE__QUOTAON                         0x00008000UL
+#define LNK_FILE__MOUNTON                         0x00010000UL
+
+#define CHR_FILE__IOCTL                           0x00000001UL
+#define CHR_FILE__READ                            0x00000002UL
+#define CHR_FILE__WRITE                           0x00000004UL
+#define CHR_FILE__CREATE                          0x00000008UL
+#define CHR_FILE__GETATTR                         0x00000010UL
+#define CHR_FILE__SETATTR                         0x00000020UL
+#define CHR_FILE__LOCK                            0x00000040UL
+#define CHR_FILE__RELABELFROM                     0x00000080UL
+#define CHR_FILE__RELABELTO                       0x00000100UL
+#define CHR_FILE__APPEND                          0x00000200UL
+#define CHR_FILE__UNLINK                          0x00000400UL
+#define CHR_FILE__LINK                            0x00000800UL
+#define CHR_FILE__RENAME                          0x00001000UL
+#define CHR_FILE__EXECUTE                         0x00002000UL
+#define CHR_FILE__SWAPON                          0x00004000UL
+#define CHR_FILE__QUOTAON                         0x00008000UL
+#define CHR_FILE__MOUNTON                         0x00010000UL
+
+#define BLK_FILE__IOCTL                           0x00000001UL
+#define BLK_FILE__READ                            0x00000002UL
+#define BLK_FILE__WRITE                           0x00000004UL
+#define BLK_FILE__CREATE                          0x00000008UL
+#define BLK_FILE__GETATTR                         0x00000010UL
+#define BLK_FILE__SETATTR                         0x00000020UL
+#define BLK_FILE__LOCK                            0x00000040UL
+#define BLK_FILE__RELABELFROM                     0x00000080UL
+#define BLK_FILE__RELABELTO                       0x00000100UL
+#define BLK_FILE__APPEND                          0x00000200UL
+#define BLK_FILE__UNLINK                          0x00000400UL
+#define BLK_FILE__LINK                            0x00000800UL
+#define BLK_FILE__RENAME                          0x00001000UL
+#define BLK_FILE__EXECUTE                         0x00002000UL
+#define BLK_FILE__SWAPON                          0x00004000UL
+#define BLK_FILE__QUOTAON                         0x00008000UL
+#define BLK_FILE__MOUNTON                         0x00010000UL
+
+#define SOCK_FILE__IOCTL                          0x00000001UL
+#define SOCK_FILE__READ                           0x00000002UL
+#define SOCK_FILE__WRITE                          0x00000004UL
+#define SOCK_FILE__CREATE                         0x00000008UL
+#define SOCK_FILE__GETATTR                        0x00000010UL
+#define SOCK_FILE__SETATTR                        0x00000020UL
+#define SOCK_FILE__LOCK                           0x00000040UL
+#define SOCK_FILE__RELABELFROM                    0x00000080UL
+#define SOCK_FILE__RELABELTO                      0x00000100UL
+#define SOCK_FILE__APPEND                         0x00000200UL
+#define SOCK_FILE__UNLINK                         0x00000400UL
+#define SOCK_FILE__LINK                           0x00000800UL
+#define SOCK_FILE__RENAME                         0x00001000UL
+#define SOCK_FILE__EXECUTE                        0x00002000UL
+#define SOCK_FILE__SWAPON                         0x00004000UL
+#define SOCK_FILE__QUOTAON                        0x00008000UL
+#define SOCK_FILE__MOUNTON                        0x00010000UL
+
+#define FIFO_FILE__IOCTL                          0x00000001UL
+#define FIFO_FILE__READ                           0x00000002UL
+#define FIFO_FILE__WRITE                          0x00000004UL
+#define FIFO_FILE__CREATE                         0x00000008UL
+#define FIFO_FILE__GETATTR                        0x00000010UL
+#define FIFO_FILE__SETATTR                        0x00000020UL
+#define FIFO_FILE__LOCK                           0x00000040UL
+#define FIFO_FILE__RELABELFROM                    0x00000080UL
+#define FIFO_FILE__RELABELTO                      0x00000100UL
+#define FIFO_FILE__APPEND                         0x00000200UL
+#define FIFO_FILE__UNLINK                         0x00000400UL
+#define FIFO_FILE__LINK                           0x00000800UL
+#define FIFO_FILE__RENAME                         0x00001000UL
+#define FIFO_FILE__EXECUTE                        0x00002000UL
+#define FIFO_FILE__SWAPON                         0x00004000UL
+#define FIFO_FILE__QUOTAON                        0x00008000UL
+#define FIFO_FILE__MOUNTON                        0x00010000UL
+
+#define FD__USE                                   0x00000001UL
+
+#define SOCKET__IOCTL                             0x00000001UL
+#define SOCKET__READ                              0x00000002UL
+#define SOCKET__WRITE                             0x00000004UL
+#define SOCKET__CREATE                            0x00000008UL
+#define SOCKET__GETATTR                           0x00000010UL
+#define SOCKET__SETATTR                           0x00000020UL
+#define SOCKET__LOCK                              0x00000040UL
+#define SOCKET__RELABELFROM                       0x00000080UL
+#define SOCKET__RELABELTO                         0x00000100UL
+#define SOCKET__APPEND                            0x00000200UL
+#define SOCKET__BIND                              0x00000400UL
+#define SOCKET__CONNECT                           0x00000800UL
+#define SOCKET__LISTEN                            0x00001000UL
+#define SOCKET__ACCEPT                            0x00002000UL
+#define SOCKET__GETOPT                            0x00004000UL
+#define SOCKET__SETOPT                            0x00008000UL
+#define SOCKET__SHUTDOWN                          0x00010000UL
+#define SOCKET__RECVFROM                          0x00020000UL
+#define SOCKET__SENDTO                            0x00040000UL
+#define SOCKET__RECV_MSG                          0x00080000UL
+#define SOCKET__SEND_MSG                          0x00100000UL
+#define SOCKET__NAME_BIND                         0x00200000UL
+
+#define TCP_SOCKET__IOCTL                         0x00000001UL
+#define TCP_SOCKET__READ                          0x00000002UL
+#define TCP_SOCKET__WRITE                         0x00000004UL
+#define TCP_SOCKET__CREATE                        0x00000008UL
+#define TCP_SOCKET__GETATTR                       0x00000010UL
+#define TCP_SOCKET__SETATTR                       0x00000020UL
+#define TCP_SOCKET__LOCK                          0x00000040UL
+#define TCP_SOCKET__RELABELFROM                   0x00000080UL
+#define TCP_SOCKET__RELABELTO                     0x00000100UL
+#define TCP_SOCKET__APPEND                        0x00000200UL
+#define TCP_SOCKET__BIND                          0x00000400UL
+#define TCP_SOCKET__CONNECT                       0x00000800UL
+#define TCP_SOCKET__LISTEN                        0x00001000UL
+#define TCP_SOCKET__ACCEPT                        0x00002000UL
+#define TCP_SOCKET__GETOPT                        0x00004000UL
+#define TCP_SOCKET__SETOPT                        0x00008000UL
+#define TCP_SOCKET__SHUTDOWN                      0x00010000UL
+#define TCP_SOCKET__RECVFROM                      0x00020000UL
+#define TCP_SOCKET__SENDTO                        0x00040000UL
+#define TCP_SOCKET__RECV_MSG                      0x00080000UL
+#define TCP_SOCKET__SEND_MSG                      0x00100000UL
+#define TCP_SOCKET__NAME_BIND                     0x00200000UL
+
+#define TCP_SOCKET__CONNECTTO                     0x00400000UL
+#define TCP_SOCKET__NEWCONN                       0x00800000UL
+#define TCP_SOCKET__ACCEPTFROM                    0x01000000UL
+#define TCP_SOCKET__NODE_BIND                     0x02000000UL
+
+#define UDP_SOCKET__IOCTL                         0x00000001UL
+#define UDP_SOCKET__READ                          0x00000002UL
+#define UDP_SOCKET__WRITE                         0x00000004UL
+#define UDP_SOCKET__CREATE                        0x00000008UL
+#define UDP_SOCKET__GETATTR                       0x00000010UL
+#define UDP_SOCKET__SETATTR                       0x00000020UL
+#define UDP_SOCKET__LOCK                          0x00000040UL
+#define UDP_SOCKET__RELABELFROM                   0x00000080UL
+#define UDP_SOCKET__RELABELTO                     0x00000100UL
+#define UDP_SOCKET__APPEND                        0x00000200UL
+#define UDP_SOCKET__BIND                          0x00000400UL
+#define UDP_SOCKET__CONNECT                       0x00000800UL
+#define UDP_SOCKET__LISTEN                        0x00001000UL
+#define UDP_SOCKET__ACCEPT                        0x00002000UL
+#define UDP_SOCKET__GETOPT                        0x00004000UL
+#define UDP_SOCKET__SETOPT                        0x00008000UL
+#define UDP_SOCKET__SHUTDOWN                      0x00010000UL
+#define UDP_SOCKET__RECVFROM                      0x00020000UL
+#define UDP_SOCKET__SENDTO                        0x00040000UL
+#define UDP_SOCKET__RECV_MSG                      0x00080000UL
+#define UDP_SOCKET__SEND_MSG                      0x00100000UL
+#define UDP_SOCKET__NAME_BIND                     0x00200000UL
+
+#define UDP_SOCKET__NODE_BIND                     0x00400000UL
+
+#define RAWIP_SOCKET__IOCTL                       0x00000001UL
+#define RAWIP_SOCKET__READ                        0x00000002UL
+#define RAWIP_SOCKET__WRITE                       0x00000004UL
+#define RAWIP_SOCKET__CREATE                      0x00000008UL
+#define RAWIP_SOCKET__GETATTR                     0x00000010UL
+#define RAWIP_SOCKET__SETATTR                     0x00000020UL
+#define RAWIP_SOCKET__LOCK                        0x00000040UL
+#define RAWIP_SOCKET__RELABELFROM                 0x00000080UL
+#define RAWIP_SOCKET__RELABELTO                   0x00000100UL
+#define RAWIP_SOCKET__APPEND                      0x00000200UL
+#define RAWIP_SOCKET__BIND                        0x00000400UL
+#define RAWIP_SOCKET__CONNECT                     0x00000800UL
+#define RAWIP_SOCKET__LISTEN                      0x00001000UL
+#define RAWIP_SOCKET__ACCEPT                      0x00002000UL
+#define RAWIP_SOCKET__GETOPT                      0x00004000UL
+#define RAWIP_SOCKET__SETOPT                      0x00008000UL
+#define RAWIP_SOCKET__SHUTDOWN                    0x00010000UL
+#define RAWIP_SOCKET__RECVFROM                    0x00020000UL
+#define RAWIP_SOCKET__SENDTO                      0x00040000UL
+#define RAWIP_SOCKET__RECV_MSG                    0x00080000UL
+#define RAWIP_SOCKET__SEND_MSG                    0x00100000UL
+#define RAWIP_SOCKET__NAME_BIND                   0x00200000UL
+
+#define RAWIP_SOCKET__NODE_BIND                   0x00400000UL
+
+#define NODE__TCP_RECV                            0x00000001UL
+#define NODE__TCP_SEND                            0x00000002UL
+#define NODE__UDP_RECV                            0x00000004UL
+#define NODE__UDP_SEND                            0x00000008UL
+#define NODE__RAWIP_RECV                          0x00000010UL
+#define NODE__RAWIP_SEND                          0x00000020UL
+#define NODE__ENFORCE_DEST                        0x00000040UL
+
+#define NETIF__TCP_RECV                           0x00000001UL
+#define NETIF__TCP_SEND                           0x00000002UL
+#define NETIF__UDP_RECV                           0x00000004UL
+#define NETIF__UDP_SEND                           0x00000008UL
+#define NETIF__RAWIP_RECV                         0x00000010UL
+#define NETIF__RAWIP_SEND                         0x00000020UL
+
+#define NETLINK_SOCKET__IOCTL                     0x00000001UL
+#define NETLINK_SOCKET__READ                      0x00000002UL
+#define NETLINK_SOCKET__WRITE                     0x00000004UL
+#define NETLINK_SOCKET__CREATE                    0x00000008UL
+#define NETLINK_SOCKET__GETATTR                   0x00000010UL
+#define NETLINK_SOCKET__SETATTR                   0x00000020UL
+#define NETLINK_SOCKET__LOCK                      0x00000040UL
+#define NETLINK_SOCKET__RELABELFROM               0x00000080UL
+#define NETLINK_SOCKET__RELABELTO                 0x00000100UL
+#define NETLINK_SOCKET__APPEND                    0x00000200UL
+#define NETLINK_SOCKET__BIND                      0x00000400UL
+#define NETLINK_SOCKET__CONNECT                   0x00000800UL
+#define NETLINK_SOCKET__LISTEN                    0x00001000UL
+#define NETLINK_SOCKET__ACCEPT                    0x00002000UL
+#define NETLINK_SOCKET__GETOPT                    0x00004000UL
+#define NETLINK_SOCKET__SETOPT                    0x00008000UL
+#define NETLINK_SOCKET__SHUTDOWN                  0x00010000UL
+#define NETLINK_SOCKET__RECVFROM                  0x00020000UL
+#define NETLINK_SOCKET__SENDTO                    0x00040000UL
+#define NETLINK_SOCKET__RECV_MSG                  0x00080000UL
+#define NETLINK_SOCKET__SEND_MSG                  0x00100000UL
+#define NETLINK_SOCKET__NAME_BIND                 0x00200000UL
+
+#define PACKET_SOCKET__IOCTL                      0x00000001UL
+#define PACKET_SOCKET__READ                       0x00000002UL
+#define PACKET_SOCKET__WRITE                      0x00000004UL
+#define PACKET_SOCKET__CREATE                     0x00000008UL
+#define PACKET_SOCKET__GETATTR                    0x00000010UL
+#define PACKET_SOCKET__SETATTR                    0x00000020UL
+#define PACKET_SOCKET__LOCK                       0x00000040UL
+#define PACKET_SOCKET__RELABELFROM                0x00000080UL
+#define PACKET_SOCKET__RELABELTO                  0x00000100UL
+#define PACKET_SOCKET__APPEND                     0x00000200UL
+#define PACKET_SOCKET__BIND                       0x00000400UL
+#define PACKET_SOCKET__CONNECT                    0x00000800UL
+#define PACKET_SOCKET__LISTEN                     0x00001000UL
+#define PACKET_SOCKET__ACCEPT                     0x00002000UL
+#define PACKET_SOCKET__GETOPT                     0x00004000UL
+#define PACKET_SOCKET__SETOPT                     0x00008000UL
+#define PACKET_SOCKET__SHUTDOWN                   0x00010000UL
+#define PACKET_SOCKET__RECVFROM                   0x00020000UL
+#define PACKET_SOCKET__SENDTO                     0x00040000UL
+#define PACKET_SOCKET__RECV_MSG                   0x00080000UL
+#define PACKET_SOCKET__SEND_MSG                   0x00100000UL
+#define PACKET_SOCKET__NAME_BIND                  0x00200000UL
+
+#define KEY_SOCKET__IOCTL                         0x00000001UL
+#define KEY_SOCKET__READ                          0x00000002UL
+#define KEY_SOCKET__WRITE                         0x00000004UL
+#define KEY_SOCKET__CREATE                        0x00000008UL
+#define KEY_SOCKET__GETATTR                       0x00000010UL
+#define KEY_SOCKET__SETATTR                       0x00000020UL
+#define KEY_SOCKET__LOCK                          0x00000040UL
+#define KEY_SOCKET__RELABELFROM                   0x00000080UL
+#define KEY_SOCKET__RELABELTO                     0x00000100UL
+#define KEY_SOCKET__APPEND                        0x00000200UL
+#define KEY_SOCKET__BIND                          0x00000400UL
+#define KEY_SOCKET__CONNECT                       0x00000800UL
+#define KEY_SOCKET__LISTEN                        0x00001000UL
+#define KEY_SOCKET__ACCEPT                        0x00002000UL
+#define KEY_SOCKET__GETOPT                        0x00004000UL
+#define KEY_SOCKET__SETOPT                        0x00008000UL
+#define KEY_SOCKET__SHUTDOWN                      0x00010000UL
+#define KEY_SOCKET__RECVFROM                      0x00020000UL
+#define KEY_SOCKET__SENDTO                        0x00040000UL
+#define KEY_SOCKET__RECV_MSG                      0x00080000UL
+#define KEY_SOCKET__SEND_MSG                      0x00100000UL
+#define KEY_SOCKET__NAME_BIND                     0x00200000UL
+
+#define UNIX_STREAM_SOCKET__IOCTL                 0x00000001UL
+#define UNIX_STREAM_SOCKET__READ                  0x00000002UL
+#define UNIX_STREAM_SOCKET__WRITE                 0x00000004UL
+#define UNIX_STREAM_SOCKET__CREATE                0x00000008UL
+#define UNIX_STREAM_SOCKET__GETATTR               0x00000010UL
+#define UNIX_STREAM_SOCKET__SETATTR               0x00000020UL
+#define UNIX_STREAM_SOCKET__LOCK                  0x00000040UL
+#define UNIX_STREAM_SOCKET__RELABELFROM           0x00000080UL
+#define UNIX_STREAM_SOCKET__RELABELTO             0x00000100UL
+#define UNIX_STREAM_SOCKET__APPEND                0x00000200UL
+#define UNIX_STREAM_SOCKET__BIND                  0x00000400UL
+#define UNIX_STREAM_SOCKET__CONNECT               0x00000800UL
+#define UNIX_STREAM_SOCKET__LISTEN                0x00001000UL
+#define UNIX_STREAM_SOCKET__ACCEPT                0x00002000UL
+#define UNIX_STREAM_SOCKET__GETOPT                0x00004000UL
+#define UNIX_STREAM_SOCKET__SETOPT                0x00008000UL
+#define UNIX_STREAM_SOCKET__SHUTDOWN              0x00010000UL
+#define UNIX_STREAM_SOCKET__RECVFROM              0x00020000UL
+#define UNIX_STREAM_SOCKET__SENDTO                0x00040000UL
+#define UNIX_STREAM_SOCKET__RECV_MSG              0x00080000UL
+#define UNIX_STREAM_SOCKET__SEND_MSG              0x00100000UL
+#define UNIX_STREAM_SOCKET__NAME_BIND             0x00200000UL
+
+#define UNIX_STREAM_SOCKET__CONNECTTO             0x00400000UL
+#define UNIX_STREAM_SOCKET__NEWCONN               0x00800000UL
+#define UNIX_STREAM_SOCKET__ACCEPTFROM            0x01000000UL
+
+#define UNIX_DGRAM_SOCKET__IOCTL                  0x00000001UL
+#define UNIX_DGRAM_SOCKET__READ                   0x00000002UL
+#define UNIX_DGRAM_SOCKET__WRITE                  0x00000004UL
+#define UNIX_DGRAM_SOCKET__CREATE                 0x00000008UL
+#define UNIX_DGRAM_SOCKET__GETATTR                0x00000010UL
+#define UNIX_DGRAM_SOCKET__SETATTR                0x00000020UL
+#define UNIX_DGRAM_SOCKET__LOCK                   0x00000040UL
+#define UNIX_DGRAM_SOCKET__RELABELFROM            0x00000080UL
+#define UNIX_DGRAM_SOCKET__RELABELTO              0x00000100UL
+#define UNIX_DGRAM_SOCKET__APPEND                 0x00000200UL
+#define UNIX_DGRAM_SOCKET__BIND                   0x00000400UL
+#define UNIX_DGRAM_SOCKET__CONNECT                0x00000800UL
+#define UNIX_DGRAM_SOCKET__LISTEN                 0x00001000UL
+#define UNIX_DGRAM_SOCKET__ACCEPT                 0x00002000UL
+#define UNIX_DGRAM_SOCKET__GETOPT                 0x00004000UL
+#define UNIX_DGRAM_SOCKET__SETOPT                 0x00008000UL
+#define UNIX_DGRAM_SOCKET__SHUTDOWN               0x00010000UL
+#define UNIX_DGRAM_SOCKET__RECVFROM               0x00020000UL
+#define UNIX_DGRAM_SOCKET__SENDTO                 0x00040000UL
+#define UNIX_DGRAM_SOCKET__RECV_MSG               0x00080000UL
+#define UNIX_DGRAM_SOCKET__SEND_MSG               0x00100000UL
+#define UNIX_DGRAM_SOCKET__NAME_BIND              0x00200000UL
+
+#define PROCESS__FORK                             0x00000001UL
+#define PROCESS__TRANSITION                       0x00000002UL
+#define PROCESS__SIGCHLD                          0x00000004UL
+#define PROCESS__SIGKILL                          0x00000008UL
+#define PROCESS__SIGSTOP                          0x00000010UL
+#define PROCESS__SIGNULL                          0x00000020UL
+#define PROCESS__SIGNAL                           0x00000040UL
+#define PROCESS__PTRACE                           0x00000080UL
+#define PROCESS__GETSCHED                         0x00000100UL
+#define PROCESS__SETSCHED                         0x00000200UL
+#define PROCESS__GETSESSION                       0x00000400UL
+#define PROCESS__GETPGID                          0x00000800UL
+#define PROCESS__SETPGID                          0x00001000UL
+#define PROCESS__GETCAP                           0x00002000UL
+#define PROCESS__SETCAP                           0x00004000UL
+#define PROCESS__SHARE                            0x00008000UL
+#define PROCESS__GETATTR                          0x00010000UL
+#define PROCESS__SETEXEC                          0x00020000UL
+#define PROCESS__SETFSCREATE                      0x00040000UL
+#define PROCESS__NOATSECURE                       0x00080000UL
+#define PROCESS__SIGINH                           0x00100000UL
+#define PROCESS__SETRLIMIT                        0x00200000UL
+#define PROCESS__RLIMITINH                        0x00400000UL
+
+#define IPC__CREATE                               0x00000001UL
+#define IPC__DESTROY                              0x00000002UL
+#define IPC__GETATTR                              0x00000004UL
+#define IPC__SETATTR                              0x00000008UL
+#define IPC__READ                                 0x00000010UL
+#define IPC__WRITE                                0x00000020UL
+#define IPC__ASSOCIATE                            0x00000040UL
+#define IPC__UNIX_READ                            0x00000080UL
+#define IPC__UNIX_WRITE                           0x00000100UL
+
+#define SEM__CREATE                               0x00000001UL
+#define SEM__DESTROY                              0x00000002UL
+#define SEM__GETATTR                              0x00000004UL
+#define SEM__SETATTR                              0x00000008UL
+#define SEM__READ                                 0x00000010UL
+#define SEM__WRITE                                0x00000020UL
+#define SEM__ASSOCIATE                            0x00000040UL
+#define SEM__UNIX_READ                            0x00000080UL
+#define SEM__UNIX_WRITE                           0x00000100UL
+
+#define MSGQ__CREATE                              0x00000001UL
+#define MSGQ__DESTROY                             0x00000002UL
+#define MSGQ__GETATTR                             0x00000004UL
+#define MSGQ__SETATTR                             0x00000008UL
+#define MSGQ__READ                                0x00000010UL
+#define MSGQ__WRITE                               0x00000020UL
+#define MSGQ__ASSOCIATE                           0x00000040UL
+#define MSGQ__UNIX_READ                           0x00000080UL
+#define MSGQ__UNIX_WRITE                          0x00000100UL
+
+#define MSGQ__ENQUEUE                             0x00000200UL
+
+#define MSG__SEND                                 0x00000001UL
+#define MSG__RECEIVE                              0x00000002UL
+
+#define SHM__CREATE                               0x00000001UL
+#define SHM__DESTROY                              0x00000002UL
+#define SHM__GETATTR                              0x00000004UL
+#define SHM__SETATTR                              0x00000008UL
+#define SHM__READ                                 0x00000010UL
+#define SHM__WRITE                                0x00000020UL
+#define SHM__ASSOCIATE                            0x00000040UL
+#define SHM__UNIX_READ                            0x00000080UL
+#define SHM__UNIX_WRITE                           0x00000100UL
+
+#define SHM__LOCK                                 0x00000200UL
+
+#define SECURITY__COMPUTE_AV                      0x00000001UL
+#define SECURITY__COMPUTE_CREATE                  0x00000002UL
+#define SECURITY__COMPUTE_MEMBER                  0x00000004UL
+#define SECURITY__CHECK_CONTEXT                   0x00000008UL
+#define SECURITY__LOAD_POLICY                     0x00000010UL
+#define SECURITY__COMPUTE_RELABEL                 0x00000020UL
+#define SECURITY__COMPUTE_USER                    0x00000040UL
+#define SECURITY__SETENFORCE                      0x00000080UL
+#define SECURITY__SETBOOL                         0x00000100UL
+
+#define SYSTEM__IPC_INFO                          0x00000001UL
+#define SYSTEM__SYSLOG_READ                       0x00000002UL
+#define SYSTEM__SYSLOG_MOD                        0x00000004UL
+#define SYSTEM__SYSLOG_CONSOLE                    0x00000008UL
+
+#define CAPABILITY__CHOWN                         0x00000001UL
+#define CAPABILITY__DAC_OVERRIDE                  0x00000002UL
+#define CAPABILITY__DAC_READ_SEARCH               0x00000004UL
+#define CAPABILITY__FOWNER                        0x00000008UL
+#define CAPABILITY__FSETID                        0x00000010UL
+#define CAPABILITY__KILL                          0x00000020UL
+#define CAPABILITY__SETGID                        0x00000040UL
+#define CAPABILITY__SETUID                        0x00000080UL
+#define CAPABILITY__SETPCAP                       0x00000100UL
+#define CAPABILITY__LINUX_IMMUTABLE               0x00000200UL
+#define CAPABILITY__NET_BIND_SERVICE              0x00000400UL
+#define CAPABILITY__NET_BROADCAST                 0x00000800UL
+#define CAPABILITY__NET_ADMIN                     0x00001000UL
+#define CAPABILITY__NET_RAW                       0x00002000UL
+#define CAPABILITY__IPC_LOCK                      0x00004000UL
+#define CAPABILITY__IPC_OWNER                     0x00008000UL
+#define CAPABILITY__SYS_MODULE                    0x00010000UL
+#define CAPABILITY__SYS_RAWIO                     0x00020000UL
+#define CAPABILITY__SYS_CHROOT                    0x00040000UL
+#define CAPABILITY__SYS_PTRACE                    0x00080000UL
+#define CAPABILITY__SYS_PACCT                     0x00100000UL
+#define CAPABILITY__SYS_ADMIN                     0x00200000UL
+#define CAPABILITY__SYS_BOOT                      0x00400000UL
+#define CAPABILITY__SYS_NICE                      0x00800000UL
+#define CAPABILITY__SYS_RESOURCE                  0x01000000UL
+#define CAPABILITY__SYS_TIME                      0x02000000UL
+#define CAPABILITY__SYS_TTY_CONFIG                0x04000000UL
+#define CAPABILITY__MKNOD                         0x08000000UL
+#define CAPABILITY__LEASE                         0x10000000UL
+
+#define PASSWD__PASSWD                            0x00000001UL
+#define PASSWD__CHFN                              0x00000002UL
+#define PASSWD__CHSH                              0x00000004UL
+#define PASSWD__ROOTOK                            0x00000008UL
+
+#define DRAWABLE__CREATE                          0x00000001UL
+#define DRAWABLE__DESTROY                         0x00000002UL
+#define DRAWABLE__DRAW                            0x00000004UL
+#define DRAWABLE__COPY                            0x00000008UL
+#define DRAWABLE__GETATTR                         0x00000010UL
+
+#define GC__CREATE                                0x00000001UL
+#define GC__FREE                                  0x00000002UL
+#define GC__GETATTR                               0x00000004UL
+#define GC__SETATTR                               0x00000008UL
+
+#define WINDOW__ADDCHILD                          0x00000001UL
+#define WINDOW__CREATE                            0x00000002UL
+#define WINDOW__DESTROY                           0x00000004UL
+#define WINDOW__MAP                               0x00000008UL
+#define WINDOW__UNMAP                             0x00000010UL
+#define WINDOW__CHSTACK                           0x00000020UL
+#define WINDOW__CHPROPLIST                        0x00000040UL
+#define WINDOW__CHPROP                            0x00000080UL
+#define WINDOW__LISTPROP                          0x00000100UL
+#define WINDOW__GETATTR                           0x00000200UL
+#define WINDOW__SETATTR                           0x00000400UL
+#define WINDOW__SETFOCUS                          0x00000800UL
+#define WINDOW__MOVE                              0x00001000UL
+#define WINDOW__CHSELECTION                       0x00002000UL
+#define WINDOW__CHPARENT                          0x00004000UL
+#define WINDOW__CTRLLIFE                          0x00008000UL
+#define WINDOW__ENUMERATE                         0x00010000UL
+#define WINDOW__TRANSPARENT                       0x00020000UL
+#define WINDOW__MOUSEMOTION                       0x00040000UL
+#define WINDOW__CLIENTCOMEVENT                    0x00080000UL
+#define WINDOW__INPUTEVENT                        0x00100000UL
+#define WINDOW__DRAWEVENT                         0x00200000UL
+#define WINDOW__WINDOWCHANGEEVENT                 0x00400000UL
+#define WINDOW__WINDOWCHANGEREQUEST               0x00800000UL
+#define WINDOW__SERVERCHANGEEVENT                 0x01000000UL
+#define WINDOW__EXTENSIONEVENT                    0x02000000UL
+
+#define FONT__LOAD                                0x00000001UL
+#define FONT__FREE                                0x00000002UL
+#define FONT__GETATTR                             0x00000004UL
+#define FONT__USE                                 0x00000008UL
+
+#define COLORMAP__CREATE                          0x00000001UL
+#define COLORMAP__FREE                            0x00000002UL
+#define COLORMAP__INSTALL                         0x00000004UL
+#define COLORMAP__UNINSTALL                       0x00000008UL
+#define COLORMAP__LIST                            0x00000010UL
+#define COLORMAP__READ                            0x00000020UL
+#define COLORMAP__STORE                           0x00000040UL
+#define COLORMAP__GETATTR                         0x00000080UL
+#define COLORMAP__SETATTR                         0x00000100UL
+
+#define PROPERTY__CREATE                          0x00000001UL
+#define PROPERTY__FREE                            0x00000002UL
+#define PROPERTY__READ                            0x00000004UL
+#define PROPERTY__WRITE                           0x00000008UL
+
+#define CURSOR__CREATE                            0x00000001UL
+#define CURSOR__CREATEGLYPH                       0x00000002UL
+#define CURSOR__FREE                              0x00000004UL
+#define CURSOR__ASSIGN                            0x00000008UL
+#define CURSOR__SETATTR                           0x00000010UL
+
+#define XCLIENT__KILL                             0x00000001UL
+
+#define XINPUT__LOOKUP                            0x00000001UL
+#define XINPUT__GETATTR                           0x00000002UL
+#define XINPUT__SETATTR                           0x00000004UL
+#define XINPUT__SETFOCUS                          0x00000008UL
+#define XINPUT__WARPPOINTER                       0x00000010UL
+#define XINPUT__ACTIVEGRAB                        0x00000020UL
+#define XINPUT__PASSIVEGRAB                       0x00000040UL
+#define XINPUT__UNGRAB                            0x00000080UL
+#define XINPUT__BELL                              0x00000100UL
+#define XINPUT__MOUSEMOTION                       0x00000200UL
+#define XINPUT__RELABELINPUT                      0x00000400UL
+
+#define XSERVER__SCREENSAVER                      0x00000001UL
+#define XSERVER__GETHOSTLIST                      0x00000002UL
+#define XSERVER__SETHOSTLIST                      0x00000004UL
+#define XSERVER__GETFONTPATH                      0x00000008UL
+#define XSERVER__SETFONTPATH                      0x00000010UL
+#define XSERVER__GETATTR                          0x00000020UL
+#define XSERVER__GRAB                             0x00000040UL
+#define XSERVER__UNGRAB                           0x00000080UL
+
+#define XEXTENSION__QUERY                         0x00000001UL
+#define XEXTENSION__USE                           0x00000002UL
+
+#define PAX__PAGEEXEC                             0x00000001UL
+#define PAX__EMUTRAMP                             0x00000002UL
+#define PAX__MPROTECT                             0x00000004UL
+#define PAX__RANDMMAP                             0x00000008UL
+#define PAX__RANDEXEC                             0x00000010UL
+#define PAX__SEGMEXEC                             0x00000020UL
+
+#define NETLINK_ROUTE_SOCKET__IOCTL               0x00000001UL
+#define NETLINK_ROUTE_SOCKET__READ                0x00000002UL
+#define NETLINK_ROUTE_SOCKET__WRITE               0x00000004UL
+#define NETLINK_ROUTE_SOCKET__CREATE              0x00000008UL
+#define NETLINK_ROUTE_SOCKET__GETATTR             0x00000010UL
+#define NETLINK_ROUTE_SOCKET__SETATTR             0x00000020UL
+#define NETLINK_ROUTE_SOCKET__LOCK                0x00000040UL
+#define NETLINK_ROUTE_SOCKET__RELABELFROM         0x00000080UL
+#define NETLINK_ROUTE_SOCKET__RELABELTO           0x00000100UL
+#define NETLINK_ROUTE_SOCKET__APPEND              0x00000200UL
+#define NETLINK_ROUTE_SOCKET__BIND                0x00000400UL
+#define NETLINK_ROUTE_SOCKET__CONNECT             0x00000800UL
+#define NETLINK_ROUTE_SOCKET__LISTEN              0x00001000UL
+#define NETLINK_ROUTE_SOCKET__ACCEPT              0x00002000UL
+#define NETLINK_ROUTE_SOCKET__GETOPT              0x00004000UL
+#define NETLINK_ROUTE_SOCKET__SETOPT              0x00008000UL
+#define NETLINK_ROUTE_SOCKET__SHUTDOWN            0x00010000UL
+#define NETLINK_ROUTE_SOCKET__RECVFROM            0x00020000UL
+#define NETLINK_ROUTE_SOCKET__SENDTO              0x00040000UL
+#define NETLINK_ROUTE_SOCKET__RECV_MSG            0x00080000UL
+#define NETLINK_ROUTE_SOCKET__SEND_MSG            0x00100000UL
+#define NETLINK_ROUTE_SOCKET__NAME_BIND           0x00200000UL
+
+#define NETLINK_ROUTE_SOCKET__NLMSG_READ          0x00400000UL
+#define NETLINK_ROUTE_SOCKET__NLMSG_WRITE         0x00800000UL
+
+#define NETLINK_FIREWALL_SOCKET__IOCTL            0x00000001UL
+#define NETLINK_FIREWALL_SOCKET__READ             0x00000002UL
+#define NETLINK_FIREWALL_SOCKET__WRITE            0x00000004UL
+#define NETLINK_FIREWALL_SOCKET__CREATE           0x00000008UL
+#define NETLINK_FIREWALL_SOCKET__GETATTR          0x00000010UL
+#define NETLINK_FIREWALL_SOCKET__SETATTR          0x00000020UL
+#define NETLINK_FIREWALL_SOCKET__LOCK             0x00000040UL
+#define NETLINK_FIREWALL_SOCKET__RELABELFROM      0x00000080UL
+#define NETLINK_FIREWALL_SOCKET__RELABELTO        0x00000100UL
+#define NETLINK_FIREWALL_SOCKET__APPEND           0x00000200UL
+#define NETLINK_FIREWALL_SOCKET__BIND             0x00000400UL
+#define NETLINK_FIREWALL_SOCKET__CONNECT          0x00000800UL
+#define NETLINK_FIREWALL_SOCKET__LISTEN           0x00001000UL
+#define NETLINK_FIREWALL_SOCKET__ACCEPT           0x00002000UL
+#define NETLINK_FIREWALL_SOCKET__GETOPT           0x00004000UL
+#define NETLINK_FIREWALL_SOCKET__SETOPT           0x00008000UL
+#define NETLINK_FIREWALL_SOCKET__SHUTDOWN         0x00010000UL
+#define NETLINK_FIREWALL_SOCKET__RECVFROM         0x00020000UL
+#define NETLINK_FIREWALL_SOCKET__SENDTO           0x00040000UL
+#define NETLINK_FIREWALL_SOCKET__RECV_MSG         0x00080000UL
+#define NETLINK_FIREWALL_SOCKET__SEND_MSG         0x00100000UL
+#define NETLINK_FIREWALL_SOCKET__NAME_BIND        0x00200000UL
+
+#define NETLINK_FIREWALL_SOCKET__NLMSG_READ       0x00400000UL
+#define NETLINK_FIREWALL_SOCKET__NLMSG_WRITE      0x00800000UL
+
+#define NETLINK_TCPDIAG_SOCKET__IOCTL             0x00000001UL
+#define NETLINK_TCPDIAG_SOCKET__READ              0x00000002UL
+#define NETLINK_TCPDIAG_SOCKET__WRITE             0x00000004UL
+#define NETLINK_TCPDIAG_SOCKET__CREATE            0x00000008UL
+#define NETLINK_TCPDIAG_SOCKET__GETATTR           0x00000010UL
+#define NETLINK_TCPDIAG_SOCKET__SETATTR           0x00000020UL
+#define NETLINK_TCPDIAG_SOCKET__LOCK              0x00000040UL
+#define NETLINK_TCPDIAG_SOCKET__RELABELFROM       0x00000080UL
+#define NETLINK_TCPDIAG_SOCKET__RELABELTO         0x00000100UL
+#define NETLINK_TCPDIAG_SOCKET__APPEND            0x00000200UL
+#define NETLINK_TCPDIAG_SOCKET__BIND              0x00000400UL
+#define NETLINK_TCPDIAG_SOCKET__CONNECT           0x00000800UL
+#define NETLINK_TCPDIAG_SOCKET__LISTEN            0x00001000UL
+#define NETLINK_TCPDIAG_SOCKET__ACCEPT            0x00002000UL
+#define NETLINK_TCPDIAG_SOCKET__GETOPT            0x00004000UL
+#define NETLINK_TCPDIAG_SOCKET__SETOPT            0x00008000UL
+#define NETLINK_TCPDIAG_SOCKET__SHUTDOWN          0x00010000UL
+#define NETLINK_TCPDIAG_SOCKET__RECVFROM          0x00020000UL
+#define NETLINK_TCPDIAG_SOCKET__SENDTO            0x00040000UL
+#define NETLINK_TCPDIAG_SOCKET__RECV_MSG          0x00080000UL
+#define NETLINK_TCPDIAG_SOCKET__SEND_MSG          0x00100000UL
+#define NETLINK_TCPDIAG_SOCKET__NAME_BIND         0x00200000UL
+
+#define NETLINK_TCPDIAG_SOCKET__NLMSG_READ        0x00400000UL
+#define NETLINK_TCPDIAG_SOCKET__NLMSG_WRITE       0x00800000UL
+
+#define NETLINK_NFLOG_SOCKET__IOCTL               0x00000001UL
+#define NETLINK_NFLOG_SOCKET__READ                0x00000002UL
+#define NETLINK_NFLOG_SOCKET__WRITE               0x00000004UL
+#define NETLINK_NFLOG_SOCKET__CREATE              0x00000008UL
+#define NETLINK_NFLOG_SOCKET__GETATTR             0x00000010UL
+#define NETLINK_NFLOG_SOCKET__SETATTR             0x00000020UL
+#define NETLINK_NFLOG_SOCKET__LOCK                0x00000040UL
+#define NETLINK_NFLOG_SOCKET__RELABELFROM         0x00000080UL
+#define NETLINK_NFLOG_SOCKET__RELABELTO           0x00000100UL
+#define NETLINK_NFLOG_SOCKET__APPEND              0x00000200UL
+#define NETLINK_NFLOG_SOCKET__BIND                0x00000400UL
+#define NETLINK_NFLOG_SOCKET__CONNECT             0x00000800UL
+#define NETLINK_NFLOG_SOCKET__LISTEN              0x00001000UL
+#define NETLINK_NFLOG_SOCKET__ACCEPT              0x00002000UL
+#define NETLINK_NFLOG_SOCKET__GETOPT              0x00004000UL
+#define NETLINK_NFLOG_SOCKET__SETOPT              0x00008000UL
+#define NETLINK_NFLOG_SOCKET__SHUTDOWN            0x00010000UL
+#define NETLINK_NFLOG_SOCKET__RECVFROM            0x00020000UL
+#define NETLINK_NFLOG_SOCKET__SENDTO              0x00040000UL
+#define NETLINK_NFLOG_SOCKET__RECV_MSG            0x00080000UL
+#define NETLINK_NFLOG_SOCKET__SEND_MSG            0x00100000UL
+#define NETLINK_NFLOG_SOCKET__NAME_BIND           0x00200000UL
+
+#define NETLINK_XFRM_SOCKET__IOCTL                0x00000001UL
+#define NETLINK_XFRM_SOCKET__READ                 0x00000002UL
+#define NETLINK_XFRM_SOCKET__WRITE                0x00000004UL
+#define NETLINK_XFRM_SOCKET__CREATE               0x00000008UL
+#define NETLINK_XFRM_SOCKET__GETATTR              0x00000010UL
+#define NETLINK_XFRM_SOCKET__SETATTR              0x00000020UL
+#define NETLINK_XFRM_SOCKET__LOCK                 0x00000040UL
+#define NETLINK_XFRM_SOCKET__RELABELFROM          0x00000080UL
+#define NETLINK_XFRM_SOCKET__RELABELTO            0x00000100UL
+#define NETLINK_XFRM_SOCKET__APPEND               0x00000200UL
+#define NETLINK_XFRM_SOCKET__BIND                 0x00000400UL
+#define NETLINK_XFRM_SOCKET__CONNECT              0x00000800UL
+#define NETLINK_XFRM_SOCKET__LISTEN               0x00001000UL
+#define NETLINK_XFRM_SOCKET__ACCEPT               0x00002000UL
+#define NETLINK_XFRM_SOCKET__GETOPT               0x00004000UL
+#define NETLINK_XFRM_SOCKET__SETOPT               0x00008000UL
+#define NETLINK_XFRM_SOCKET__SHUTDOWN             0x00010000UL
+#define NETLINK_XFRM_SOCKET__RECVFROM             0x00020000UL
+#define NETLINK_XFRM_SOCKET__SENDTO               0x00040000UL
+#define NETLINK_XFRM_SOCKET__RECV_MSG             0x00080000UL
+#define NETLINK_XFRM_SOCKET__SEND_MSG             0x00100000UL
+#define NETLINK_XFRM_SOCKET__NAME_BIND            0x00200000UL
+
+#define NETLINK_XFRM_SOCKET__NLMSG_READ           0x00400000UL
+#define NETLINK_XFRM_SOCKET__NLMSG_WRITE          0x00800000UL
+
+#define NETLINK_SELINUX_SOCKET__IOCTL             0x00000001UL
+#define NETLINK_SELINUX_SOCKET__READ              0x00000002UL
+#define NETLINK_SELINUX_SOCKET__WRITE             0x00000004UL
+#define NETLINK_SELINUX_SOCKET__CREATE            0x00000008UL
+#define NETLINK_SELINUX_SOCKET__GETATTR           0x00000010UL
+#define NETLINK_SELINUX_SOCKET__SETATTR           0x00000020UL
+#define NETLINK_SELINUX_SOCKET__LOCK              0x00000040UL
+#define NETLINK_SELINUX_SOCKET__RELABELFROM       0x00000080UL
+#define NETLINK_SELINUX_SOCKET__RELABELTO         0x00000100UL
+#define NETLINK_SELINUX_SOCKET__APPEND            0x00000200UL
+#define NETLINK_SELINUX_SOCKET__BIND              0x00000400UL
+#define NETLINK_SELINUX_SOCKET__CONNECT           0x00000800UL
+#define NETLINK_SELINUX_SOCKET__LISTEN            0x00001000UL
+#define NETLINK_SELINUX_SOCKET__ACCEPT            0x00002000UL
+#define NETLINK_SELINUX_SOCKET__GETOPT            0x00004000UL
+#define NETLINK_SELINUX_SOCKET__SETOPT            0x00008000UL
+#define NETLINK_SELINUX_SOCKET__SHUTDOWN          0x00010000UL
+#define NETLINK_SELINUX_SOCKET__RECVFROM          0x00020000UL
+#define NETLINK_SELINUX_SOCKET__SENDTO            0x00040000UL
+#define NETLINK_SELINUX_SOCKET__RECV_MSG          0x00080000UL
+#define NETLINK_SELINUX_SOCKET__SEND_MSG          0x00100000UL
+#define NETLINK_SELINUX_SOCKET__NAME_BIND         0x00200000UL
+
+#define NETLINK_AUDIT_SOCKET__IOCTL               0x00000001UL
+#define NETLINK_AUDIT_SOCKET__READ                0x00000002UL
+#define NETLINK_AUDIT_SOCKET__WRITE               0x00000004UL
+#define NETLINK_AUDIT_SOCKET__CREATE              0x00000008UL
+#define NETLINK_AUDIT_SOCKET__GETATTR             0x00000010UL
+#define NETLINK_AUDIT_SOCKET__SETATTR             0x00000020UL
+#define NETLINK_AUDIT_SOCKET__LOCK                0x00000040UL
+#define NETLINK_AUDIT_SOCKET__RELABELFROM         0x00000080UL
+#define NETLINK_AUDIT_SOCKET__RELABELTO           0x00000100UL
+#define NETLINK_AUDIT_SOCKET__APPEND              0x00000200UL
+#define NETLINK_AUDIT_SOCKET__BIND                0x00000400UL
+#define NETLINK_AUDIT_SOCKET__CONNECT             0x00000800UL
+#define NETLINK_AUDIT_SOCKET__LISTEN              0x00001000UL
+#define NETLINK_AUDIT_SOCKET__ACCEPT              0x00002000UL
+#define NETLINK_AUDIT_SOCKET__GETOPT              0x00004000UL
+#define NETLINK_AUDIT_SOCKET__SETOPT              0x00008000UL
+#define NETLINK_AUDIT_SOCKET__SHUTDOWN            0x00010000UL
+#define NETLINK_AUDIT_SOCKET__RECVFROM            0x00020000UL
+#define NETLINK_AUDIT_SOCKET__SENDTO              0x00040000UL
+#define NETLINK_AUDIT_SOCKET__RECV_MSG            0x00080000UL
+#define NETLINK_AUDIT_SOCKET__SEND_MSG            0x00100000UL
+#define NETLINK_AUDIT_SOCKET__NAME_BIND           0x00200000UL
+
+#define NETLINK_AUDIT_SOCKET__NLMSG_READ          0x00400000UL
+#define NETLINK_AUDIT_SOCKET__NLMSG_WRITE         0x00800000UL
+
+#define NETLINK_IP6FW_SOCKET__IOCTL               0x00000001UL
+#define NETLINK_IP6FW_SOCKET__READ                0x00000002UL
+#define NETLINK_IP6FW_SOCKET__WRITE               0x00000004UL
+#define NETLINK_IP6FW_SOCKET__CREATE              0x00000008UL
+#define NETLINK_IP6FW_SOCKET__GETATTR             0x00000010UL
+#define NETLINK_IP6FW_SOCKET__SETATTR             0x00000020UL
+#define NETLINK_IP6FW_SOCKET__LOCK                0x00000040UL
+#define NETLINK_IP6FW_SOCKET__RELABELFROM         0x00000080UL
+#define NETLINK_IP6FW_SOCKET__RELABELTO           0x00000100UL
+#define NETLINK_IP6FW_SOCKET__APPEND              0x00000200UL
+#define NETLINK_IP6FW_SOCKET__BIND                0x00000400UL
+#define NETLINK_IP6FW_SOCKET__CONNECT             0x00000800UL
+#define NETLINK_IP6FW_SOCKET__LISTEN              0x00001000UL
+#define NETLINK_IP6FW_SOCKET__ACCEPT              0x00002000UL
+#define NETLINK_IP6FW_SOCKET__GETOPT              0x00004000UL
+#define NETLINK_IP6FW_SOCKET__SETOPT              0x00008000UL
+#define NETLINK_IP6FW_SOCKET__SHUTDOWN            0x00010000UL
+#define NETLINK_IP6FW_SOCKET__RECVFROM            0x00020000UL
+#define NETLINK_IP6FW_SOCKET__SENDTO              0x00040000UL
+#define NETLINK_IP6FW_SOCKET__RECV_MSG            0x00080000UL
+#define NETLINK_IP6FW_SOCKET__SEND_MSG            0x00100000UL
+#define NETLINK_IP6FW_SOCKET__NAME_BIND           0x00200000UL
+
+#define NETLINK_IP6FW_SOCKET__NLMSG_READ          0x00400000UL
+#define NETLINK_IP6FW_SOCKET__NLMSG_WRITE         0x00800000UL
+
+#define NETLINK_DNRT_SOCKET__IOCTL                0x00000001UL
+#define NETLINK_DNRT_SOCKET__READ                 0x00000002UL
+#define NETLINK_DNRT_SOCKET__WRITE                0x00000004UL
+#define NETLINK_DNRT_SOCKET__CREATE               0x00000008UL
+#define NETLINK_DNRT_SOCKET__GETATTR              0x00000010UL
+#define NETLINK_DNRT_SOCKET__SETATTR              0x00000020UL
+#define NETLINK_DNRT_SOCKET__LOCK                 0x00000040UL
+#define NETLINK_DNRT_SOCKET__RELABELFROM          0x00000080UL
+#define NETLINK_DNRT_SOCKET__RELABELTO            0x00000100UL
+#define NETLINK_DNRT_SOCKET__APPEND               0x00000200UL
+#define NETLINK_DNRT_SOCKET__BIND                 0x00000400UL
+#define NETLINK_DNRT_SOCKET__CONNECT              0x00000800UL
+#define NETLINK_DNRT_SOCKET__LISTEN               0x00001000UL
+#define NETLINK_DNRT_SOCKET__ACCEPT               0x00002000UL
+#define NETLINK_DNRT_SOCKET__GETOPT               0x00004000UL
+#define NETLINK_DNRT_SOCKET__SETOPT               0x00008000UL
+#define NETLINK_DNRT_SOCKET__SHUTDOWN             0x00010000UL
+#define NETLINK_DNRT_SOCKET__RECVFROM             0x00020000UL
+#define NETLINK_DNRT_SOCKET__SENDTO               0x00040000UL
+#define NETLINK_DNRT_SOCKET__RECV_MSG             0x00080000UL
+#define NETLINK_DNRT_SOCKET__SEND_MSG             0x00100000UL
+
+/* FLASK */

extra/linux-2.6.10/security/selinux/include/avc.h

@@ -0,0 +1,155 @@
+/*
+ * Access vector cache interface for object managers.
+ *
+ * Author : Stephen Smalley, <sds@epoch.ncsc.mil>
+ */
+#ifndef _SELINUX_AVC_H_
+#define _SELINUX_AVC_H_
+
+#include <linux/stddef.h>
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/kdev_t.h>
+#include <linux/spinlock.h>
+#include <linux/init.h>
+#include <linux/in6.h>
+#include <asm/system.h>
+#include "flask.h"
+#include "av_permissions.h"
+#include "security.h"
+
+#ifdef CONFIG_SECURITY_SELINUX_DEVELOP
+extern int selinux_enforcing;
+#else
+#define selinux_enforcing 1
+#endif
+
+/*
+ * An entry in the AVC.
+ */
+struct avc_entry;
+
+/*
+ * A reference to an AVC entry.
+ */
+struct avc_entry_ref {
+	struct avc_entry *ae;
+};
+
+/* Initialize an AVC entry reference before first use. */
+static inline void avc_entry_ref_init(struct avc_entry_ref *h)
+{
+	h->ae = NULL;
+}
+
+struct task_struct;
+struct vfsmount;
+struct dentry;
+struct inode;
+struct sock;
+struct sk_buff;
+
+/* Auxiliary data to use in generating the audit record. */
+struct avc_audit_data {
+	char    type;
+#define AVC_AUDIT_DATA_FS   1
+#define AVC_AUDIT_DATA_NET  2
+#define AVC_AUDIT_DATA_CAP  3
+#define AVC_AUDIT_DATA_IPC  4
+	struct task_struct *tsk;
+	union 	{
+		struct {
+			struct vfsmount *mnt;
+			struct dentry *dentry;
+			struct inode *inode;
+		} fs;
+		struct {
+			char *netif;
+			struct sock *sk;
+			u16 family;
+			u16 dport;
+			u16 sport;
+			union {
+				struct {
+					u32 daddr;
+					u32 saddr;
+				} v4;
+				struct {
+					struct in6_addr daddr;
+					struct in6_addr saddr;
+				} v6;
+			} fam;
+		} net;
+		int cap;
+		int ipc_id;
+	} u;
+};
+
+#define v4info fam.v4
+#define v6info fam.v6
+
+/* Initialize an AVC audit data structure. */
+#define AVC_AUDIT_DATA_INIT(_d,_t) \
+        { memset((_d), 0, sizeof(struct avc_audit_data)); (_d)->type = AVC_AUDIT_DATA_##_t; }
+
+/*
+ * AVC statistics
+ */
+#define AVC_ENTRY_LOOKUPS        0
+#define AVC_ENTRY_HITS	         1
+#define AVC_ENTRY_MISSES         2
+#define AVC_ENTRY_DISCARDS       3
+#define AVC_CAV_LOOKUPS          4
+#define AVC_CAV_HITS             5
+#define AVC_CAV_PROBES           6
+#define AVC_CAV_MISSES           7
+#define AVC_NSTATS               8
+
+/*
+ * AVC display support
+ */
+struct audit_buffer;
+void avc_dump_av(struct audit_buffer *ab, u16 tclass, u32 av);
+void avc_dump_query(struct audit_buffer *ab, u32 ssid, u32 tsid, u16 tclass);
+
+/*
+ * AVC operations
+ */
+
+void __init avc_init(void);
+
+int avc_lookup(u32 ssid, u32 tsid, u16 tclass,
+               u32 requested, struct avc_entry_ref *aeref);
+
+int avc_insert(u32 ssid, u32 tsid, u16 tclass,
+               struct avc_entry *ae, struct avc_entry_ref *out_aeref);
+
+void avc_audit(u32 ssid, u32 tsid,
+               u16 tclass, u32 requested,
+               struct av_decision *avd, int result, struct avc_audit_data *auditdata);
+
+int avc_has_perm_noaudit(u32 ssid, u32 tsid,
+                         u16 tclass, u32 requested,
+                         struct avc_entry_ref *aeref, struct av_decision *avd);
+
+int avc_has_perm(u32 ssid, u32 tsid,
+                 u16 tclass, u32 requested,
+                 struct avc_entry_ref *aeref, struct avc_audit_data *auditdata);
+
+#define AVC_CALLBACK_GRANT		1
+#define AVC_CALLBACK_TRY_REVOKE		2
+#define AVC_CALLBACK_REVOKE		4
+#define AVC_CALLBACK_RESET		8
+#define AVC_CALLBACK_AUDITALLOW_ENABLE	16
+#define AVC_CALLBACK_AUDITALLOW_DISABLE	32
+#define AVC_CALLBACK_AUDITDENY_ENABLE	64
+#define AVC_CALLBACK_AUDITDENY_DISABLE	128
+
+int avc_add_callback(int (*callback)(u32 event, u32 ssid, u32 tsid,
+                                     u16 tclass, u32 perms,
+				     u32 *out_retained),
+		     u32 events, u32 ssid, u32 tsid,
+		     u16 tclass, u32 perms);
+
+#endif /* _SELINUX_AVC_H_ */
+

extra/linux-2.6.10/security/selinux/include/avc_ss.h

@@ -0,0 +1,27 @@
+/*
+ * Access vector cache interface for the security server.
+ *
+ * Author : Stephen Smalley, <sds@epoch.ncsc.mil>
+ */
+#ifndef _SELINUX_AVC_SS_H_
+#define _SELINUX_AVC_SS_H_
+
+#include "flask.h"
+
+int avc_ss_grant(u32 ssid, u32 tsid, u16 tclass, u32 perms, u32 seqno);
+
+int avc_ss_try_revoke(u32 ssid, u32 tsid, u16 tclass, u32 perms, u32 seqno,
+		      u32 *out_retained);
+
+int avc_ss_revoke(u32 ssid, u32 tsid, u16 tclass, u32 perms, u32 seqno);
+
+int avc_ss_reset(u32 seqno);
+
+int avc_ss_set_auditallow(u32 ssid, u32 tsid, u16 tclass, u32 perms,
+			  u32 seqno, u32 enable);
+
+int avc_ss_set_auditdeny(u32 ssid, u32 tsid, u16 tclass, u32 perms,
+			 u32 seqno, u32 enable);
+
+#endif /* _SELINUX_AVC_SS_H_ */
+

extra/linux-2.6.10/security/selinux/include/class_to_string.h

@@ -0,0 +1,60 @@
+/* This file is automatically generated.  Do not edit. */
+/*
+ * Security object class definitions
+ */
+static char *class_to_string[] =
+{
+    "null",
+    "security",
+    "process",
+    "system",
+    "capability",
+    "filesystem",
+    "file",
+    "dir",
+    "fd",
+    "lnk_file",
+    "chr_file",
+    "blk_file",
+    "sock_file",
+    "fifo_file",
+    "socket",
+    "tcp_socket",
+    "udp_socket",
+    "rawip_socket",
+    "node",
+    "netif",
+    "netlink_socket",
+    "packet_socket",
+    "key_socket",
+    "unix_stream_socket",
+    "unix_dgram_socket",
+    "sem",
+    "msg",
+    "msgq",
+    "shm",
+    "ipc",
+    "passwd",
+    "drawable",
+    "window",
+    "gc",
+    "font",
+    "colormap",
+    "property",
+    "cursor",
+    "xclient",
+    "xinput",
+    "xserver",
+    "xextension",
+    "pax",
+    "netlink_route_socket",
+    "netlink_firewall_socket",
+    "netlink_tcpdiag_socket",
+    "netlink_nflog_socket",
+    "netlink_xfrm_socket",
+    "netlink_selinux_socket",
+    "netlink_audit_socket",
+    "netlink_ip6fw_socket",
+    "netlink_dnrt_socket",
+};
+

extra/linux-2.6.10/security/selinux/include/common_perm_to_string.h

@@ -0,0 +1,65 @@
+/* This file is automatically generated.  Do not edit. */
+/* FLASK */
+
+static char *common_file_perm_to_string[] =
+{
+    "ioctl",
+    "read",
+    "write",
+    "create",
+    "getattr",
+    "setattr",
+    "lock",
+    "relabelfrom",
+    "relabelto",
+    "append",
+    "unlink",
+    "link",
+    "rename",
+    "execute",
+    "swapon",
+    "quotaon",
+    "mounton",
+};
+
+static char *common_socket_perm_to_string[] =
+{
+    "ioctl",
+    "read",
+    "write",
+    "create",
+    "getattr",
+    "setattr",
+    "lock",
+    "relabelfrom",
+    "relabelto",
+    "append",
+    "bind",
+    "connect",
+    "listen",
+    "accept",
+    "getopt",
+    "setopt",
+    "shutdown",
+    "recvfrom",
+    "sendto",
+    "recv_msg",
+    "send_msg",
+    "name_bind",
+};
+
+static char *common_ipc_perm_to_string[] =
+{
+    "create",
+    "destroy",
+    "getattr",
+    "setattr",
+    "read",
+    "write",
+    "associate",
+    "unix_read",
+    "unix_write",
+};
+
+
+/* FLASK */

extra/linux-2.6.10/security/selinux/include/conditional.h

@@ -0,0 +1,22 @@
+/*
+ * Interface to booleans in the security server. This is exported
+ * for the selinuxfs.
+ *
+ * Author: Karl MacMillan <kmacmillan@tresys.com>
+ *
+ * Copyright (C) 2003 - 2004 Tresys Technology, LLC
+ *	This program is free software; you can redistribute it and/or modify
+ *  	it under the terms of the GNU General Public License as published by
+ *	the Free Software Foundation, version 2.
+ */
+
+#ifndef _SELINUX_CONDITIONAL_H_
+#define _SELINUX_CONDITIONAL_H_
+
+int security_get_bools(int *len, char ***names, int **values);
+
+int security_set_bools(int len, int *values);
+
+int security_get_bool_value(int bool);
+
+#endif

extra/linux-2.6.10/security/selinux/include/flask.h

@@ -0,0 +1,93 @@
+/* This file is automatically generated.  Do not edit. */
+#ifndef _SELINUX_FLASK_H_
+#define _SELINUX_FLASK_H_
+
+/*
+ * Security object class definitions
+ */
+#define SECCLASS_SECURITY                                1
+#define SECCLASS_PROCESS                                 2
+#define SECCLASS_SYSTEM                                  3
+#define SECCLASS_CAPABILITY                              4
+#define SECCLASS_FILESYSTEM                              5
+#define SECCLASS_FILE                                    6
+#define SECCLASS_DIR                                     7
+#define SECCLASS_FD                                      8
+#define SECCLASS_LNK_FILE                                9
+#define SECCLASS_CHR_FILE                                10
+#define SECCLASS_BLK_FILE                                11
+#define SECCLASS_SOCK_FILE                               12
+#define SECCLASS_FIFO_FILE                               13
+#define SECCLASS_SOCKET                                  14
+#define SECCLASS_TCP_SOCKET                              15
+#define SECCLASS_UDP_SOCKET                              16
+#define SECCLASS_RAWIP_SOCKET                            17
+#define SECCLASS_NODE                                    18
+#define SECCLASS_NETIF                                   19
+#define SECCLASS_NETLINK_SOCKET                          20
+#define SECCLASS_PACKET_SOCKET                           21
+#define SECCLASS_KEY_SOCKET                              22
+#define SECCLASS_UNIX_STREAM_SOCKET                      23
+#define SECCLASS_UNIX_DGRAM_SOCKET                       24
+#define SECCLASS_SEM                                     25
+#define SECCLASS_MSG                                     26
+#define SECCLASS_MSGQ                                    27
+#define SECCLASS_SHM                                     28
+#define SECCLASS_IPC                                     29
+#define SECCLASS_PASSWD                                  30
+#define SECCLASS_DRAWABLE                                31
+#define SECCLASS_WINDOW                                  32
+#define SECCLASS_GC                                      33
+#define SECCLASS_FONT                                    34
+#define SECCLASS_COLORMAP                                35
+#define SECCLASS_PROPERTY                                36
+#define SECCLASS_CURSOR                                  37
+#define SECCLASS_XCLIENT                                 38
+#define SECCLASS_XINPUT                                  39
+#define SECCLASS_XSERVER                                 40
+#define SECCLASS_XEXTENSION                              41
+#define SECCLASS_PAX                                     42
+#define SECCLASS_NETLINK_ROUTE_SOCKET                    43
+#define SECCLASS_NETLINK_FIREWALL_SOCKET                 44
+#define SECCLASS_NETLINK_TCPDIAG_SOCKET                  45
+#define SECCLASS_NETLINK_NFLOG_SOCKET                    46
+#define SECCLASS_NETLINK_XFRM_SOCKET                     47
+#define SECCLASS_NETLINK_SELINUX_SOCKET                  48
+#define SECCLASS_NETLINK_AUDIT_SOCKET                    49
+#define SECCLASS_NETLINK_IP6FW_SOCKET                    50
+#define SECCLASS_NETLINK_DNRT_SOCKET                     51
+
+/*
+ * Security identifier indices for initial entities
+ */
+#define SECINITSID_KERNEL                               1
+#define SECINITSID_SECURITY                             2
+#define SECINITSID_UNLABELED                            3
+#define SECINITSID_FS                                   4
+#define SECINITSID_FILE                                 5
+#define SECINITSID_FILE_LABELS                          6
+#define SECINITSID_INIT                                 7
+#define SECINITSID_ANY_SOCKET                           8
+#define SECINITSID_PORT                                 9
+#define SECINITSID_NETIF                                10
+#define SECINITSID_NETMSG                               11
+#define SECINITSID_NODE                                 12
+#define SECINITSID_IGMP_PACKET                          13
+#define SECINITSID_ICMP_SOCKET                          14
+#define SECINITSID_TCP_SOCKET                           15
+#define SECINITSID_SYSCTL_MODPROBE                      16
+#define SECINITSID_SYSCTL                               17
+#define SECINITSID_SYSCTL_FS                            18
+#define SECINITSID_SYSCTL_KERNEL                        19
+#define SECINITSID_SYSCTL_NET                           20
+#define SECINITSID_SYSCTL_NET_UNIX                      21
+#define SECINITSID_SYSCTL_VM                            22
+#define SECINITSID_SYSCTL_DEV                           23
+#define SECINITSID_KMOD                                 24
+#define SECINITSID_POLICY                               25
+#define SECINITSID_SCMP_PACKET                          26
+#define SECINITSID_DEVNULL                              27
+
+#define SECINITSID_NUM                                  27
+
+#endif

extra/linux-2.6.10/security/selinux/include/initial_sid_to_string.h

@@ -0,0 +1,33 @@
+/* This file is automatically generated.  Do not edit. */
+static char *initial_sid_to_string[] =
+{
+    "null",
+    "kernel",
+    "security",
+    "unlabeled",
+    "fs",
+    "file",
+    "file_labels",
+    "init",
+    "any_socket",
+    "port",
+    "netif",
+    "netmsg",
+    "node",
+    "igmp_packet",
+    "icmp_socket",
+    "tcp_socket",
+    "sysctl_modprobe",
+    "sysctl",
+    "sysctl_fs",
+    "sysctl_kernel",
+    "sysctl_net",
+    "sysctl_net_unix",
+    "sysctl_vm",
+    "sysctl_dev",
+    "kmod",
+    "policy",
+    "scmp_packet",
+    "devnull",
+};
+

extra/linux-2.6.10/security/selinux/include/netif.h

@@ -0,0 +1,21 @@
+/*
+ * Network interface table.
+ *
+ * Network interfaces (devices) do not have a security field, so we
+ * maintain a table associating each interface with a SID.
+ *
+ * Author: James Morris <jmorris@redhat.com>
+ *
+ * Copyright (C) 2003 Red Hat, Inc., James Morris <jmorris@redhat.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2,
+ * as published by the Free Software Foundation.
+ */
+#ifndef _SELINUX_NETIF_H_
+#define _SELINUX_NETIF_H_
+
+int sel_netif_sids(struct net_device *dev, u32 *if_sid, u32 *msg_sid);
+
+#endif	/* _SELINUX_NETIF_H_ */
+

extra/linux-2.6.10/security/selinux/include/objsec.h

@@ -0,0 +1,112 @@
+/*
+ *  NSA Security-Enhanced Linux (SELinux) security module
+ *
+ *  This file contains the SELinux security data structures for kernel objects.
+ *
+ *  Author(s):  Stephen Smalley, <sds@epoch.ncsc.mil>
+ *              Chris Vance, <cvance@nai.com>
+ *              Wayne Salamon, <wsalamon@nai.com>
+ *              James Morris <jmorris@redhat.com>
+ *
+ *  Copyright (C) 2001,2002 Networks Associates Technology, Inc.
+ *  Copyright (C) 2003 Red Hat, Inc., James Morris <jmorris@redhat.com>
+ *
+ *	This program is free software; you can redistribute it and/or modify
+ *	it under the terms of the GNU General Public License version 2,
+ *      as published by the Free Software Foundation.
+ */
+#ifndef _SELINUX_OBJSEC_H_
+#define _SELINUX_OBJSEC_H_
+
+#include <linux/list.h>
+#include <linux/sched.h>
+#include <linux/fs.h>
+#include <linux/binfmts.h>
+#include <linux/in.h>
+#include "flask.h"
+#include "avc.h"
+
+struct task_security_struct {
+        unsigned long magic;           /* magic number for this module */
+	struct task_struct *task;      /* back pointer to task object */
+	u32 osid;            /* SID prior to last execve */
+	u32 sid;             /* current SID */
+	u32 exec_sid;        /* exec SID */
+	u32 create_sid;      /* fscreate SID */
+        struct avc_entry_ref avcr;     /* reference to process permissions */
+	u32 ptrace_sid;      /* SID of ptrace parent */
+};
+
+struct inode_security_struct {
+	unsigned long magic;           /* magic number for this module */
+        struct inode *inode;           /* back pointer to inode object */
+	struct list_head list;         /* list of inode_security_struct */
+	u32 task_sid;        /* SID of creating task */
+	u32 sid;             /* SID of this object */
+	u16 sclass;       /* security class of this object */
+	struct avc_entry_ref avcr;     /* reference to object permissions */
+	unsigned char initialized;     /* initialization flag */
+	struct semaphore sem;
+	unsigned char inherit;         /* inherit SID from parent entry */
+};
+
+struct file_security_struct {
+	unsigned long magic;            /* magic number for this module */
+	struct file *file;              /* back pointer to file object */
+	u32 sid;              /* SID of open file description */
+	u32 fown_sid;         /* SID of file owner (for SIGIO) */
+	struct avc_entry_ref avcr;	/* reference to fd permissions */
+	struct avc_entry_ref inode_avcr;     /* reference to object permissions */
+};
+
+struct superblock_security_struct {
+	unsigned long magic;            /* magic number for this module */
+	struct super_block *sb;         /* back pointer to sb object */
+	struct list_head list;          /* list of superblock_security_struct */
+	u32 sid;              /* SID of file system */
+	u32 def_sid;			/* default SID for labeling */
+	unsigned int behavior;          /* labeling behavior */
+	unsigned char initialized;      /* initialization flag */
+	unsigned char proc;             /* proc fs */
+	struct semaphore sem;
+	struct list_head isec_head;
+	spinlock_t isec_lock;
+};
+
+struct msg_security_struct {
+        unsigned long magic;		/* magic number for this module */
+	struct msg_msg *msg;		/* back pointer */
+	u32 sid;              /* SID of message */
+        struct avc_entry_ref avcr;	/* reference to permissions */
+};
+
+struct ipc_security_struct {
+        unsigned long magic;		/* magic number for this module */
+	struct kern_ipc_perm *ipc_perm; /* back pointer */
+	u16 sclass;	/* security class of this object */
+	u32 sid;              /* SID of IPC resource */
+        struct avc_entry_ref avcr;	/* reference to permissions */
+};
+
+struct bprm_security_struct {
+	unsigned long magic;           /* magic number for this module */
+	struct linux_binprm *bprm;     /* back pointer to bprm object */
+	u32 sid;                       /* SID for transformed process */
+	unsigned char set;
+};
+
+struct netif_security_struct {
+	struct net_device *dev;		/* back pointer */
+	u32 if_sid;			/* SID for this interface */
+	u32 msg_sid;			/* default SID for messages received on this interface */
+};
+
+struct sk_security_struct {
+	unsigned long magic;		/* magic number for this module */
+	struct sock *sk;		/* back pointer to sk object */
+	u32 peer_sid;			/* SID of peer */
+};
+
+extern int inode_security_set_sid(struct inode *inode, u32 sid);
+
+#endif /* _SELINUX_OBJSEC_H_ */

extra/linux-2.6.10/security/selinux/include/security.h

@@ -0,0 +1,96 @@
+/*
+ * Security server interface.
+ *
+ * Author : Stephen Smalley, <sds@epoch.ncsc.mil>
+ *
+ */
+
+#ifndef _SELINUX_SECURITY_H_
+#define _SELINUX_SECURITY_H_
+
+#include "flask.h"
+
+#define SECSID_NULL			0x00000000 /* unspecified SID */
+#define SECSID_WILD			0xffffffff /* wildcard SID */
+#define SECCLASS_NULL			0x0000 /* no class */
+
+#define SELINUX_MAGIC 0xf97cff8c
+
+/* Identify specific policy version changes */
+#define POLICYDB_VERSION_BASE		15
+#define POLICYDB_VERSION_BOOL		16
+#define POLICYDB_VERSION_IPV6		17
+#define POLICYDB_VERSION_NLCLASS	18
+
+/* Range of policy versions we understand*/
+#define POLICYDB_VERSION_MIN   POLICYDB_VERSION_BASE
+#define POLICYDB_VERSION_MAX   POLICYDB_VERSION_NLCLASS
+
+#ifdef CONFIG_SECURITY_SELINUX_BOOTPARAM
+extern int selinux_enabled;
+#else
+#define selinux_enabled 1
+#endif
+
+#ifdef CONFIG_SECURITY_SELINUX_MLS
+#define selinux_mls_enabled 1
+#else
+#define selinux_mls_enabled 0
+#endif
+
+int security_load_policy(void * data, size_t len);
+
+struct av_decision {
+	u32 allowed;
+	u32 decided;
+	u32 auditallow;
+	u32 auditdeny;
+	u32 seqno;
+};
+
+int security_compute_av(u32 ssid, u32 tsid,
+	u16 tclass, u32 requested,
+	struct av_decision *avd);
+
+int security_transition_sid(u32 ssid, u32 tsid,
+	u16 tclass, u32 *out_sid);
+
+int security_member_sid(u32 ssid, u32 tsid,
+	u16 tclass, u32 *out_sid);
+
+int security_change_sid(u32 ssid, u32 tsid,
+	u16 tclass, u32 *out_sid);
+
+int security_sid_to_context(u32 sid, char **scontext,
+	u32 *scontext_len);
+
+int security_context_to_sid(char *scontext, u32 scontext_len,
+	u32 *out_sid);
+
+int security_get_user_sids(u32 callsid, char *username,
+			   u32 **sids, u32 *nel);
+
+int security_port_sid(u16 domain, u16 type, u8 protocol, u16 port,
+	u32 *out_sid);
+
+int security_netif_sid(char *name, u32 *if_sid,
+	u32 *msg_sid);
+
+int security_node_sid(u16 domain, void *addr, u32 addrlen,
+	u32 *out_sid);
+
+#define SECURITY_FS_USE_XATTR		1 /* use xattr */
+#define SECURITY_FS_USE_TRANS		2 /* use transition SIDs, e.g. devpts/tmpfs */
+#define SECURITY_FS_USE_TASK		3 /* use task SIDs, e.g. pipefs/sockfs */
+#define SECURITY_FS_USE_GENFS		4 /* use the genfs support */
+#define SECURITY_FS_USE_NONE		5 /* no labeling support */
+#define SECURITY_FS_USE_MNTPOINT	6 /* use mountpoint labeling */
+
+int security_fs_use(const char *fstype, unsigned int *behavior,
+	u32 *sid);
+
+int security_genfs_sid(const char *fstype, char *name, u16 sclass,
+	u32 *sid);
+
+#endif /* _SELINUX_SECURITY_H_ */
+

extra/linux-2.6.10/security/selinux/netif.c

@@ -0,0 +1,270 @@
+/*
+ * Network interface table.
+ *
+ * Network interfaces (devices) do not have a security field, so we
+ * maintain a table associating each interface with a SID.
+ *
+ * Author: James Morris <jmorris@redhat.com>
+ *
+ * Copyright (C) 2003 Red Hat, Inc., James Morris <jmorris@redhat.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2,
+ * as published by the Free Software Foundation.
+ */
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/stddef.h>
+#include <linux/kernel.h>
+#include <linux/list.h>
+#include <linux/notifier.h>
+#include <linux/netdevice.h>
+#include <linux/rcupdate.h>
+
+#include "security.h"
+#include "objsec.h"
+#include "netif.h"
+
+#define SEL_NETIF_HASH_SIZE	64
+#define SEL_NETIF_HASH_MAX	1024
+
+#undef DEBUG
+
+#ifdef DEBUG
+#define DEBUGP printk
+#else
+#define DEBUGP(format, args...)
+#endif
+
+struct sel_netif
+{
+	struct list_head list;
+	struct netif_security_struct nsec;
+	struct rcu_head rcu_head;
+};
+
+static u32 sel_netif_total;
+static LIST_HEAD(sel_netif_list);
+static spinlock_t sel_netif_lock = SPIN_LOCK_UNLOCKED;
+static struct list_head sel_netif_hash[SEL_NETIF_HASH_SIZE];
+
+static inline u32 sel_netif_hasfn(struct net_device *dev)
+{
+	return (dev->ifindex & (SEL_NETIF_HASH_SIZE - 1));
+}
+
+/*
+ * All of the devices should normally fit in the hash, so we optimize
+ * for that case.
+ */
+static inline struct sel_netif *sel_netif_find(struct net_device *dev)
+{
+	struct list_head *pos;
+	int idx = sel_netif_hasfn(dev);
+
+	__list_for_each_rcu(pos, &sel_netif_hash[idx]) {
+		struct sel_netif *netif = list_entry(pos,
+		                                     struct sel_netif, list);
+		if (likely(netif->nsec.dev == dev))
+			return netif;
+	}
+	return NULL;
+}
+
+static int sel_netif_insert(struct sel_netif *netif)
+{
+	int idx, ret = 0;
+	
+	if (sel_netif_total >= SEL_NETIF_HASH_MAX) {
+		ret = -ENOSPC;
+		goto out;
+	}
+	
+	idx = sel_netif_hasfn(netif->nsec.dev);
+	list_add_rcu(&netif->list, &sel_netif_hash[idx]);
+	sel_netif_total++;
+out:
+	return ret;
+}
+
+static void sel_netif_free(struct rcu_head *p)
+{
+	struct sel_netif *netif = container_of(p, struct sel_netif, rcu_head);
+
+	DEBUGP("%s: %s\n", __FUNCTION__, netif->nsec.dev->name);
+	kfree(netif);
+}
+
+static void sel_netif_destroy(struct sel_netif *netif)
+{
+	DEBUGP("%s: %s\n", __FUNCTION__, netif->nsec.dev->name);
+
+	list_del_rcu(&netif->list);
+	sel_netif_total--;
+	call_rcu(&netif->rcu_head, sel_netif_free);
+}
+
+static struct sel_netif *sel_netif_lookup(struct net_device *dev)
+{
+	int ret;
+	struct sel_netif *netif, *new;
+	struct netif_security_struct *nsec;
+
+	netif = sel_netif_find(dev);
+	if (likely(netif != NULL))
+		goto out;
+	
+	new = kmalloc(sizeof(*new), GFP_ATOMIC);
+	if (!new) {
+		netif = ERR_PTR(-ENOMEM);
+		goto out;
+	}
+	
+	memset(new, 0, sizeof(*new));
+	nsec = &new->nsec;
+
+	ret = security_netif_sid(dev->name, &nsec->if_sid, &nsec->msg_sid);
+	if (ret < 0) {
+		kfree(new);
+		netif = ERR_PTR(ret);
+		goto out;
+	}
+
+	nsec->dev = dev;
+	
+	spin_lock_bh(&sel_netif_lock);
+	
+	netif = sel_netif_find(dev);
+	if (netif) {
+		spin_unlock_bh(&sel_netif_lock);
+		kfree(new);
+		goto out;
+	}
+	
+	ret = sel_netif_insert(new);
+	spin_unlock_bh(&sel_netif_lock);
+	
+	if (ret) {
+		kfree(new);
+		netif = ERR_PTR(ret);
+		goto out;
+	}
+
+	netif = new;
+	
+	DEBUGP("new: ifindex=%u name=%s if_sid=%u msg_sid=%u\n", dev->ifindex, dev->name,
+	        nsec->if_sid, nsec->msg_sid);
+out:
+	return netif;
+}
+
+static void sel_netif_assign_sids(u32 if_sid_in, u32 msg_sid_in, u32 *if_sid_out, u32 *msg_sid_out)
+{
+	if (if_sid_out)
+		*if_sid_out = if_sid_in;
+	if (msg_sid_out)
+		*msg_sid_out = msg_sid_in;
+}
+
+static int sel_netif_sids_slow(struct net_device *dev, u32 *if_sid, u32 *msg_sid)
+{
+	int ret = 0;
+	u32 tmp_if_sid, tmp_msg_sid;
+	
+	ret = security_netif_sid(dev->name, &tmp_if_sid, &tmp_msg_sid);
+	if (!ret)
+		sel_netif_assign_sids(tmp_if_sid, tmp_msg_sid, if_sid, msg_sid);
+	return ret;
+}
+
+int sel_netif_sids(struct net_device *dev, u32 *if_sid, u32 *msg_sid)
+{
+	int ret = 0;
+	struct sel_netif *netif;
+
+	rcu_read_lock();
+	netif = sel_netif_lookup(dev);
+	if (IS_ERR(netif)) {
+		rcu_read_unlock();
+		ret = sel_netif_sids_slow(dev, if_sid, msg_sid);
+		goto out;
+	}
+	sel_netif_assign_sids(netif->nsec.if_sid, netif->nsec.msg_sid, if_sid, msg_sid);
+	rcu_read_unlock();
+out:
+	return ret;
+}
+
+static void sel_netif_kill(struct net_device *dev)
+{
+	struct sel_netif *netif;
+
+	spin_lock_bh(&sel_netif_lock);
+	netif = sel_netif_find(dev);
+	if (netif)
+		sel_netif_destroy(netif);
+	spin_unlock_bh(&sel_netif_lock);
+}
+
+static void sel_netif_flush(void)
+{
+	int idx;
+
+	spin_lock_bh(&sel_netif_lock);
+	for (idx = 0; idx < SEL_NETIF_HASH_SIZE; idx++) {
+		struct sel_netif *netif;
+		
+		list_for_each_entry(netif, &sel_netif_hash[idx], list)
+			sel_netif_destroy(netif);
+	}
+	spin_unlock_bh(&sel_netif_lock);
+}
+
+static int sel_netif_avc_callback(u32 event, u32 ssid, u32 tsid,
+                                  u16 class, u32 perms, u32 *retained)
+{
+	if (event == AVC_CALLBACK_RESET) {
+		sel_netif_flush();
+		synchronize_net();
+	}
+	return 0;
+}
+
+static int sel_netif_netdev_notifier_handler(struct notifier_block *this,
+                                             unsigned long event, void *ptr)
+{
+	struct net_device *dev = ptr;
+
+	if (event == NETDEV_DOWN)
+		sel_netif_kill(dev);
+
+	return NOTIFY_DONE;
+}
+
+static struct notifier_block sel_netif_netdev_notifier = {
+	.notifier_call = sel_netif_netdev_notifier_handler,
+};
+
+static __init int sel_netif_init(void)
+{
+	int i, err = 0;
+	
+	if (!selinux_enabled)
+		goto out;
+
+	for (i = 0; i < SEL_NETIF_HASH_SIZE; i++)
+		INIT_LIST_HEAD(&sel_netif_hash[i]);
+
+	register_netdevice_notifier(&sel_netif_netdev_notifier);
+	
+	err = avc_add_callback(sel_netif_avc_callback, AVC_CALLBACK_RESET,
+	                       SECSID_NULL, SECSID_NULL, SECCLASS_NULL, 0);
+	if (err)
+		panic("avc_add_callback() failed, error %d\n", err);
+
+out:
+	return err;
+}
+
+__initcall(sel_netif_init);
+

extra/linux-2.6.10/security/selinux/netlink.c

@@ -0,0 +1,113 @@
+/*
+ * Netlink event notifications for SELinux.
+ *
+ * Author: James Morris <jmorris@redhat.com>
+ *
+ * Copyright (C) 2004 Red Hat, Inc., James Morris <jmorris@redhat.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2,
+ * as published by the Free Software Foundation.
+ */
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/stddef.h>
+#include <linux/kernel.h>
+#include <linux/list.h>
+#include <linux/skbuff.h>
+#include <linux/netlink.h>
+#include <linux/selinux_netlink.h>
+
+static struct sock *selnl;
+
+static int selnl_msglen(int msgtype)
+{
+	int ret = 0;
+	
+	switch (msgtype) {
+	case SELNL_MSG_SETENFORCE:
+		ret = sizeof(struct selnl_msg_setenforce);
+		break;
+	
+	case SELNL_MSG_POLICYLOAD:
+		ret = sizeof(struct selnl_msg_policyload);
+		break;
+		
+	default:
+		BUG();
+	}
+	return ret;
+}
+
+static void selnl_add_payload(struct nlmsghdr *nlh, int len, int msgtype, void *data)
+{
+	switch (msgtype) {
+	case SELNL_MSG_SETENFORCE: {
+		struct selnl_msg_setenforce *msg = NLMSG_DATA(nlh);
+		
+		memset(msg, 0, len);
+		msg->val = *((int *)data);
+		break;
+	}
+	
+	case SELNL_MSG_POLICYLOAD: {
+		struct selnl_msg_policyload *msg = NLMSG_DATA(nlh);
+		
+		memset(msg, 0, len);
+		msg->seqno = *((u32 *)data);
+		break;
+	}
+
+	default:
+		BUG();
+	}
+}
+
+static void selnl_notify(int msgtype, void *data)
+{
+	int len;
+	unsigned char *tmp;
+	struct sk_buff *skb;
+	struct nlmsghdr *nlh;
+	
+	len = selnl_msglen(msgtype);
+	
+	skb = alloc_skb(NLMSG_SPACE(len), GFP_USER);
+	if (!skb)
+		goto oom;
+
+	tmp = skb->tail;
+	nlh = NLMSG_PUT(skb, 0, 0, msgtype, len);
+	selnl_add_payload(nlh, len, msgtype, data);
+	nlh->nlmsg_len = skb->tail - tmp;
+	netlink_broadcast(selnl, skb, 0, SELNL_GRP_AVC, GFP_USER);
+out:
+	return;
+	
+nlmsg_failure:
+	kfree_skb(skb);
+oom:
+	printk(KERN_ERR "SELinux:  OOM in %s\n", __FUNCTION__);
+	goto out;
+}
+
+void selnl_notify_setenforce(int val)
+{
+	selnl_notify(SELNL_MSG_SETENFORCE, &val);
+}
+
+void selnl_notify_policyload(u32 seqno)
+{
+	selnl_notify(SELNL_MSG_POLICYLOAD, &seqno);
+}
+
+static int __init selnl_init(void)
+{
+	selnl = netlink_kernel_create(NETLINK_SELINUX, NULL);
+	if (selnl == NULL)
+		panic("SELinux:  Cannot create netlink socket.");
+	netlink_set_nonroot(NETLINK_SELINUX, NL_NONROOT_RECV);	
+	return 0;
+}
+
+__initcall(selnl_init);

extra/linux-2.6.10/security/selinux/nlmsgtab.c

@@ -0,0 +1,153 @@
+/*
+ * Netlink message type permission tables, for user generated messages.
+ *
+ * Author: James Morris <jmorris@redhat.com>
+ *
+ * Copyright (C) 2004 Red Hat, Inc., James Morris <jmorris@redhat.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2,
+ * as published by the Free Software Foundation.
+ */
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/skbuff.h>
+#include <linux/netlink.h>
+#include <linux/rtnetlink.h>
+#include <linux/if.h>
+#include <linux/netfilter_ipv4/ip_queue.h>
+#include <linux/tcp_diag.h>
+#include <linux/xfrm.h>
+#include <linux/audit.h>
+
+#include "flask.h"
+#include "av_permissions.h"
+
+struct nlmsg_perm
+{
+	u16	nlmsg_type;
+	u32	perm;
+};
+
+static struct nlmsg_perm nlmsg_route_perms[] =
+{
+	{ RTM_NEWLINK,		NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
+	{ RTM_DELLINK,		NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
+	{ RTM_GETLINK,		NETLINK_ROUTE_SOCKET__NLMSG_READ  },
+	{ RTM_SETLINK,		NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
+	{ RTM_NEWADDR,		NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
+	{ RTM_DELADDR,		NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
+	{ RTM_GETADDR,		NETLINK_ROUTE_SOCKET__NLMSG_READ  },
+	{ RTM_NEWROUTE,		NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
+	{ RTM_DELROUTE,		NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
+	{ RTM_GETROUTE,		NETLINK_ROUTE_SOCKET__NLMSG_READ  },
+	{ RTM_NEWNEIGH,		NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
+	{ RTM_DELNEIGH,		NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
+	{ RTM_GETNEIGH,		NETLINK_ROUTE_SOCKET__NLMSG_READ  },
+	{ RTM_NEWRULE,		NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
+	{ RTM_DELRULE,		NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
+	{ RTM_GETRULE,		NETLINK_ROUTE_SOCKET__NLMSG_READ  },
+	{ RTM_NEWQDISC,		NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
+	{ RTM_DELQDISC,		NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
+	{ RTM_GETQDISC,		NETLINK_ROUTE_SOCKET__NLMSG_READ  },
+	{ RTM_NEWTCLASS,	NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
+	{ RTM_DELTCLASS,	NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
+	{ RTM_GETTCLASS,	NETLINK_ROUTE_SOCKET__NLMSG_READ  },
+	{ RTM_NEWTFILTER,	NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
+	{ RTM_DELTFILTER,	NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
+	{ RTM_GETTFILTER,	NETLINK_ROUTE_SOCKET__NLMSG_READ  },
+	{ RTM_NEWPREFIX,	NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
+	{ RTM_GETPREFIX,	NETLINK_ROUTE_SOCKET__NLMSG_READ  },
+	{ RTM_GETMULTICAST,	NETLINK_ROUTE_SOCKET__NLMSG_READ  },
+	{ RTM_GETANYCAST,	NETLINK_ROUTE_SOCKET__NLMSG_READ  },
+};
+
+static struct nlmsg_perm nlmsg_firewall_perms[] =
+{
+	{ IPQM_MODE,		NETLINK_FIREWALL_SOCKET__NLMSG_WRITE },
+	{ IPQM_VERDICT,		NETLINK_FIREWALL_SOCKET__NLMSG_WRITE },
+};
+
+static struct nlmsg_perm nlmsg_tcpdiag_perms[] =
+{
+	{ TCPDIAG_GETSOCK,	NETLINK_TCPDIAG_SOCKET__NLMSG_READ },
+};
+
+static struct nlmsg_perm nlmsg_xfrm_perms[] =
+{
+	{ XFRM_MSG_NEWSA,	NETLINK_XFRM_SOCKET__NLMSG_WRITE },
+	{ XFRM_MSG_DELSA,	NETLINK_XFRM_SOCKET__NLMSG_WRITE },
+	{ XFRM_MSG_GETSA,	NETLINK_XFRM_SOCKET__NLMSG_READ  },
+	{ XFRM_MSG_NEWPOLICY,	NETLINK_XFRM_SOCKET__NLMSG_WRITE },
+	{ XFRM_MSG_DELPOLICY,	NETLINK_XFRM_SOCKET__NLMSG_WRITE },
+	{ XFRM_MSG_GETPOLICY,	NETLINK_XFRM_SOCKET__NLMSG_READ  },
+	{ XFRM_MSG_ALLOCSPI,	NETLINK_XFRM_SOCKET__NLMSG_WRITE },
+	{ XFRM_MSG_UPDPOLICY,	NETLINK_XFRM_SOCKET__NLMSG_WRITE },
+	{ XFRM_MSG_UPDSA,	NETLINK_XFRM_SOCKET__NLMSG_WRITE },
+};
+
+static struct nlmsg_perm nlmsg_audit_perms[] =
+{
+	{ AUDIT_GET,		NETLINK_AUDIT_SOCKET__NLMSG_READ  },
+	{ AUDIT_SET,		NETLINK_AUDIT_SOCKET__NLMSG_WRITE },
+	{ AUDIT_LIST,		NETLINK_AUDIT_SOCKET__NLMSG_READ  },
+	{ AUDIT_ADD,		NETLINK_AUDIT_SOCKET__NLMSG_WRITE },
+	{ AUDIT_DEL,		NETLINK_AUDIT_SOCKET__NLMSG_WRITE },
+	{ AUDIT_USER,		NETLINK_AUDIT_SOCKET__NLMSG_WRITE },
+	{ AUDIT_LOGIN,		NETLINK_AUDIT_SOCKET__NLMSG_WRITE },
+};
+
+
+static int nlmsg_perm(u16 nlmsg_type, u32 *perm, struct nlmsg_perm *tab, size_t tabsize)
+{
+	int i, err = -EINVAL;
+
+	for (i = 0; i < tabsize/sizeof(struct nlmsg_perm); i++)
+		if (nlmsg_type == tab[i].nlmsg_type) {
+			*perm = tab[i].perm;
+			err = 0;
+			break;
+		}
+
+	return err;
+}
+
+int selinux_nlmsg_lookup(u16 sclass, u16 nlmsg_type, u32 *perm)
+{
+	int err = 0;
+
+	switch (sclass) {
+	case SECCLASS_NETLINK_ROUTE_SOCKET:
+		err = nlmsg_perm(nlmsg_type, perm, nlmsg_route_perms,
+				 sizeof(nlmsg_route_perms));
+		break;
+
+	case SECCLASS_NETLINK_FIREWALL_SOCKET:
+	case NETLINK_IP6_FW:
+		err = nlmsg_perm(nlmsg_type, perm, nlmsg_firewall_perms,
+				 sizeof(nlmsg_firewall_perms));
+		break;
+
+	case SECCLASS_NETLINK_TCPDIAG_SOCKET:
+		err = nlmsg_perm(nlmsg_type, perm, nlmsg_tcpdiag_perms,
+				 sizeof(nlmsg_tcpdiag_perms));
+		break;
+
+	case SECCLASS_NETLINK_XFRM_SOCKET:
+		err = nlmsg_perm(nlmsg_type, perm, nlmsg_xfrm_perms,
+				 sizeof(nlmsg_xfrm_perms));
+		break;
+
+	case SECCLASS_NETLINK_AUDIT_SOCKET:
+		err = nlmsg_perm(nlmsg_type, perm, nlmsg_audit_perms,
+				 sizeof(nlmsg_audit_perms));
+		break;
+
+	/* No messaging from userspace, or class unknown/unhandled */
+	default:
+		err = -ENOENT;
+		break;
+	}
+
+	return err;
+}

extra/linux-2.6.10/security/selinux/selinuxfs.c

@@ -0,0 +1,992 @@
+/* Updated: Karl MacMillan <kmacmillan@tresys.com>
+ *
+ * 	Added conditional policy language extensions
+ *
+ * Copyright (C) 2003 - 2004 Tresys Technology, LLC
+ *	This program is free software; you can redistribute it and/or modify
+ *  	it under the terms of the GNU General Public License as published by
+ *	the Free Software Foundation, version 2.
+ */
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/pagemap.h>
+#include <linux/slab.h>
+#include <linux/vmalloc.h>
+#include <linux/fs.h>
+#include <linux/init.h>
+#include <linux/string.h>
+#include <linux/security.h>
+#include <linux/major.h>
+#include <asm/uaccess.h>
+#include <asm/semaphore.h>
+
+/* selinuxfs pseudo filesystem for exporting the security policy API.
+   Based on the proc code and the fs/nfsd/nfsctl.c code. */
+
+#include "flask.h"
+#include "avc.h"
+#include "avc_ss.h"
+#include "security.h"
+#include "objsec.h"
+#include "conditional.h"
+
+static DECLARE_MUTEX(sel_sem);
+
+/* global data for booleans */
+static struct dentry *bool_dir = NULL;
+static int bool_num = 0;
+static int *bool_pending_values = NULL;
+
+extern void selnl_notify_setenforce(int val);
+
+/* Check whether a task is allowed to use a security operation. */
+int task_has_security(struct task_struct *tsk,
+		      u32 perms)
+{
+	struct task_security_struct *tsec;
+
+	tsec = tsk->security;
+	if (!tsec)
+		return -EACCES;
+
+	return avc_has_perm(tsec->sid, SECINITSID_SECURITY,
+			    SECCLASS_SECURITY, perms, NULL, NULL);
+}
+
+enum sel_inos {
+	SEL_ROOT_INO = 2,
+	SEL_LOAD,	/* load policy */
+	SEL_ENFORCE,	/* get or set enforcing status */
+	SEL_CONTEXT,	/* validate context */
+	SEL_ACCESS,	/* compute access decision */
+	SEL_CREATE,	/* compute create labeling decision */
+	SEL_RELABEL,	/* compute relabeling decision */
+	SEL_USER,	/* compute reachable user contexts */
+	SEL_POLICYVERS,	/* return policy version for this kernel */
+	SEL_COMMIT_BOOLS, /* commit new boolean values */
+	SEL_MLS,	/* return if MLS policy is enabled */
+	SEL_DISABLE	/* disable SELinux until next reboot */
+};
+
+#define TMPBUFLEN	12
+static ssize_t sel_read_enforce(struct file *filp, char __user *buf,
+				size_t count, loff_t *ppos)
+{
+	char tmpbuf[TMPBUFLEN];
+	ssize_t length;
+
+	length = scnprintf(tmpbuf, TMPBUFLEN, "%d", selinux_enforcing);
+	return simple_read_from_buffer(buf, count, ppos, tmpbuf, length);
+}
+
+#ifdef CONFIG_SECURITY_SELINUX_DEVELOP
+static ssize_t sel_write_enforce(struct file * file, const char __user * buf,
+				 size_t count, loff_t *ppos)
+
+{
+	char *page;
+	ssize_t length;
+	int new_value;
+
+	if (count < 0 || count >= PAGE_SIZE)
+		return -ENOMEM;
+	if (*ppos != 0) {
+		/* No partial writes. */
+		return -EINVAL;
+	}
+	page = (char*)get_zeroed_page(GFP_KERNEL);
+	if (!page)
+		return -ENOMEM;
+	length = -EFAULT;
+	if (copy_from_user(page, buf, count))
+		goto out;
+
+	length = -EINVAL;
+	if (sscanf(page, "%d", &new_value) != 1)
+		goto out;
+
+	if (new_value != selinux_enforcing) {
+		length = task_has_security(current, SECURITY__SETENFORCE);
+		if (length)
+			goto out;
+		selinux_enforcing = new_value;
+		if (selinux_enforcing)
+			avc_ss_reset(0);
+		selnl_notify_setenforce(selinux_enforcing);
+	}
+	length = count;
+out:
+	free_page((unsigned long) page);
+	return length;
+}
+#else
+#define sel_write_enforce NULL
+#endif
+
+static struct file_operations sel_enforce_ops = {
+	.read		= sel_read_enforce,
+	.write		= sel_write_enforce,
+};
+
+#ifdef CONFIG_SECURITY_SELINUX_DISABLE
+static ssize_t sel_write_disable(struct file * file, const char __user * buf,
+				 size_t count, loff_t *ppos)
+
+{
+	char *page;
+	ssize_t length;
+	int new_value;
+	extern int selinux_disable(void);
+
+	if (count < 0 || count >= PAGE_SIZE)
+		return -ENOMEM;
+	if (*ppos != 0) {
+		/* No partial writes. */
+		return -EINVAL;
+	}
+	page = (char*)get_zeroed_page(GFP_KERNEL);
+	if (!page)
+		return -ENOMEM;
+	length = -EFAULT;
+	if (copy_from_user(page, buf, count))
+		goto out;
+
+	length = -EINVAL;
+	if (sscanf(page, "%d", &new_value) != 1)
+		goto out;
+
+	if (new_value) {
+		length = selinux_disable();
+		if (length < 0)
+			goto out;
+	}
+
+	length = count;
+out:
+	free_page((unsigned long) page);
+	return length;
+}
+#else
+#define sel_write_disable NULL
+#endif
+
+static struct file_operations sel_disable_ops = {
+	.write		= sel_write_disable,
+};
+
+static ssize_t sel_read_policyvers(struct file *filp, char __user *buf,
+                                   size_t count, loff_t *ppos)
+{
+	char tmpbuf[TMPBUFLEN];
+	ssize_t length;
+
+	length = scnprintf(tmpbuf, TMPBUFLEN, "%u", POLICYDB_VERSION_MAX);
+	return simple_read_from_buffer(buf, count, ppos, tmpbuf, length);
+}
+
+static struct file_operations sel_policyvers_ops = {
+	.read		= sel_read_policyvers,
+};
+
+/* declaration for sel_write_load */
+static int sel_make_bools(void);
+
+static ssize_t sel_read_mls(struct file *filp, char __user *buf,
+				size_t count, loff_t *ppos)
+{
+	char tmpbuf[TMPBUFLEN];
+	ssize_t length;
+
+	length = scnprintf(tmpbuf, TMPBUFLEN, "%d", selinux_mls_enabled);
+	return simple_read_from_buffer(buf, count, ppos, tmpbuf, length);
+}
+
+static struct file_operations sel_mls_ops = {
+	.read		= sel_read_mls,
+};
+
+static ssize_t sel_write_load(struct file * file, const char __user * buf,
+			      size_t count, loff_t *ppos)
+
+{
+	int ret;
+	ssize_t length;
+	void *data = NULL;
+
+	down(&sel_sem);
+
+	length = task_has_security(current, SECURITY__LOAD_POLICY);
+	if (length)
+		goto out;
+
+	if (*ppos != 0) {
+		/* No partial writes. */
+		length = -EINVAL;
+		goto out;
+	}
+
+	if ((count < 0) || (count > 64 * 1024 * 1024)
+	    || (data = vmalloc(count)) == NULL) {
+		length = -ENOMEM;
+		goto out;
+	}
+
+	length = -EFAULT;
+	if (copy_from_user(data, buf, count) != 0)
+		goto out;
+
+	length = security_load_policy(data, count);
+	if (length)
+		goto out;
+
+	ret = sel_make_bools();
+	if (ret)
+		length = ret;
+	else
+		length = count;
+out:
+	up(&sel_sem);
+	vfree(data);
+	return length;
+}
+
+static struct file_operations sel_load_ops = {
+	.write		= sel_write_load,
+};
+
+
+static ssize_t sel_write_context(struct file * file, const char __user * buf,
+				 size_t count, loff_t *ppos)
+
+{
+	char *page;
+	u32 sid;
+	ssize_t length;
+
+	length = task_has_security(current, SECURITY__CHECK_CONTEXT);
+	if (length)
+		return length;
+
+	if (count < 0 || count >= PAGE_SIZE)
+		return -ENOMEM;
+	if (*ppos != 0) {
+		/* No partial writes. */
+		return -EINVAL;
+	}
+	page = (char*)get_zeroed_page(GFP_KERNEL);
+	if (!page)
+		return -ENOMEM;
+	length = -EFAULT;
+	if (copy_from_user(page, buf, count))
+		goto out;
+
+	length = security_context_to_sid(page, count, &sid);
+	if (length < 0)
+		goto out;
+
+	length = count;
+out:
+	free_page((unsigned long) page);
+	return length;
+}
+
+static struct file_operations sel_context_ops = {
+	.write		= sel_write_context,
+};
+
+
+/*
+ * Remaining nodes use transaction based IO methods like nfsd/nfsctl.c
+ */
+static ssize_t sel_write_access(struct file * file, char *buf, size_t size);
+static ssize_t sel_write_create(struct file * file, char *buf, size_t size);
+static ssize_t sel_write_relabel(struct file * file, char *buf, size_t size);
+static ssize_t sel_write_user(struct file * file, char *buf, size_t size);
+
+static ssize_t (*write_op[])(struct file *, char *, size_t) = {
+	[SEL_ACCESS] = sel_write_access,
+	[SEL_CREATE] = sel_write_create,
+	[SEL_RELABEL] = sel_write_relabel,
+	[SEL_USER] = sel_write_user,
+};
+
+static ssize_t selinux_transaction_write(struct file *file, const char __user *buf, size_t size, loff_t *pos)
+{
+	ino_t ino =  file->f_dentry->d_inode->i_ino;
+	char *data;
+	ssize_t rv;
+
+	if (ino >= sizeof(write_op)/sizeof(write_op[0]) || !write_op[ino])
+		return -EINVAL;
+
+	data = simple_transaction_get(file, buf, size);
+	if (IS_ERR(data))
+		return PTR_ERR(data);
+
+	rv =  write_op[ino](file, data, size);
+	if (rv>0) {
+		simple_transaction_set(file, rv);
+		rv = size;
+	}
+	return rv;
+}
+
+static struct file_operations transaction_ops = {
+	.write		= selinux_transaction_write,
+	.read		= simple_transaction_read,
+	.release	= simple_transaction_release,
+};
+
+/*
+ * payload - write methods
+ * If the method has a response, the response should be put in buf,
+ * and the length returned.  Otherwise return 0 or and -error.
+ */
+
+static ssize_t sel_write_access(struct file * file, char *buf, size_t size)
+{
+	char *scon, *tcon;
+	u32 ssid, tsid;
+	u16 tclass;
+	u32 req;
+	struct av_decision avd;
+	ssize_t length;
+
+	length = task_has_security(current, SECURITY__COMPUTE_AV);
+	if (length)
+		return length;
+
+	length = -ENOMEM;
+	scon = kmalloc(size+1, GFP_KERNEL);
+	if (!scon)
+		return length;
+	memset(scon, 0, size+1);
+
+	tcon = kmalloc(size+1, GFP_KERNEL);
+	if (!tcon)
+		goto out;
+	memset(tcon, 0, size+1);
+
+	length = -EINVAL;
+	if (sscanf(buf, "%s %s %hu %x", scon, tcon, &tclass, &req) != 4)
+		goto out2;
+
+	length = security_context_to_sid(scon, strlen(scon)+1, &ssid);
+	if (length < 0)
+		goto out2;
+	length = security_context_to_sid(tcon, strlen(tcon)+1, &tsid);
+	if (length < 0)
+		goto out2;
+
+	length = security_compute_av(ssid, tsid, tclass, req, &avd);
+	if (length < 0)
+		goto out2;
+
+	length = scnprintf(buf, SIMPLE_TRANSACTION_LIMIT,
+			  "%x %x %x %x %u",
+			  avd.allowed, avd.decided,
+			  avd.auditallow, avd.auditdeny,
+			  avd.seqno);
+out2:
+	kfree(tcon);
+out:
+	kfree(scon);
+	return length;
+}
+
+static ssize_t sel_write_create(struct file * file, char *buf, size_t size)
+{
+	char *scon, *tcon;
+	u32 ssid, tsid, newsid;
+	u16 tclass;
+	ssize_t length;
+	char *newcon;
+	u32 len;
+
+	length = task_has_security(current, SECURITY__COMPUTE_CREATE);
+	if (length)
+		return length;
+
+	length = -ENOMEM;
+	scon = kmalloc(size+1, GFP_KERNEL);
+	if (!scon)
+		return length;
+	memset(scon, 0, size+1);
+
+	tcon = kmalloc(size+1, GFP_KERNEL);
+	if (!tcon)
+		goto out;
+	memset(tcon, 0, size+1);
+
+	length = -EINVAL;
+	if (sscanf(buf, "%s %s %hu", scon, tcon, &tclass) != 3)
+		goto out2;
+
+	length = security_context_to_sid(scon, strlen(scon)+1, &ssid);
+	if (length < 0)
+		goto out2;
+	length = security_context_to_sid(tcon, strlen(tcon)+1, &tsid);
+	if (length < 0)
+		goto out2;
+
+	length = security_transition_sid(ssid, tsid, tclass, &newsid);
+	if (length < 0)
+		goto out2;
+
+	length = security_sid_to_context(newsid, &newcon, &len);
+	if (length < 0)
+		goto out2;
+
+	if (len > SIMPLE_TRANSACTION_LIMIT) {
+		printk(KERN_ERR "%s:  context size (%u) exceeds payload "
+		       "max\n", __FUNCTION__, len);
+		length = -ERANGE;
+		goto out3;
+	}
+
+	memcpy(buf, newcon, len);
+	length = len;
+out3:
+	kfree(newcon);
+out2:
+	kfree(tcon);
+out:
+	kfree(scon);
+	return length;
+}
+
+static ssize_t sel_write_relabel(struct file * file, char *buf, size_t size)
+{
+	char *scon, *tcon;
+	u32 ssid, tsid, newsid;
+	u16 tclass;
+	ssize_t length;
+	char *newcon;
+	u32 len;
+
+	length = task_has_security(current, SECURITY__COMPUTE_RELABEL);
+	if (length)
+		return length;
+
+	length = -ENOMEM;
+	scon = kmalloc(size+1, GFP_KERNEL);
+	if (!scon)
+		return length;
+	memset(scon, 0, size+1);
+
+	tcon = kmalloc(size+1, GFP_KERNEL);
+	if (!tcon)
+		goto out;
+	memset(tcon, 0, size+1);
+
+	length = -EINVAL;
+	if (sscanf(buf, "%s %s %hu", scon, tcon, &tclass) != 3)
+		goto out2;
+
+	length = security_context_to_sid(scon, strlen(scon)+1, &ssid);
+	if (length < 0)
+		goto out2;
+	length = security_context_to_sid(tcon, strlen(tcon)+1, &tsid);
+	if (length < 0)
+		goto out2;
+
+	length = security_change_sid(ssid, tsid, tclass, &newsid);
+	if (length < 0)
+		goto out2;
+
+	length = security_sid_to_context(newsid, &newcon, &len);
+	if (length < 0)
+		goto out2;
+
+	if (len > SIMPLE_TRANSACTION_LIMIT) {
+		length = -ERANGE;
+		goto out3;
+	}
+
+	memcpy(buf, newcon, len);
+	length = len;
+out3:
+	kfree(newcon);
+out2:
+	kfree(tcon);
+out:
+	kfree(scon);
+	return length;
+}
+
+static ssize_t sel_write_user(struct file * file, char *buf, size_t size)
+{
+	char *con, *user, *ptr;
+	u32 sid, *sids;
+	ssize_t length;
+	char *newcon;
+	int i, rc;
+	u32 len, nsids;
+
+	length = task_has_security(current, SECURITY__COMPUTE_USER);
+	if (length)
+		return length;
+
+	length = -ENOMEM;
+	con = kmalloc(size+1, GFP_KERNEL);
+	if (!con)
+		return length;
+	memset(con, 0, size+1);
+
+	user = kmalloc(size+1, GFP_KERNEL);
+	if (!user)
+		goto out;
+	memset(user, 0, size+1);
+
+	length = -EINVAL;
+	if (sscanf(buf, "%s %s", con, user) != 2)
+		goto out2;
+
+	length = security_context_to_sid(con, strlen(con)+1, &sid);
+	if (length < 0)
+		goto out2;
+
+	length = security_get_user_sids(sid, user, &sids, &nsids);
+	if (length < 0)
+		goto out2;
+
+	length = sprintf(buf, "%u", nsids) + 1;
+	ptr = buf + length;
+	for (i = 0; i < nsids; i++) {
+		rc = security_sid_to_context(sids[i], &newcon, &len);
+		if (rc) {
+			length = rc;
+			goto out3;
+		}
+		if ((length + len) >= SIMPLE_TRANSACTION_LIMIT) {
+			kfree(newcon);
+			length = -ERANGE;
+			goto out3;
+		}
+		memcpy(ptr, newcon, len);
+		kfree(newcon);
+		ptr += len;
+		length += len;
+	}
+out3:
+	kfree(sids);
+out2:
+	kfree(user);
+out:
+	kfree(con);
+	return length;
+}
+
+static struct inode *sel_make_inode(struct super_block *sb, int mode)
+{
+	struct inode *ret = new_inode(sb);
+
+	if (ret) {
+		ret->i_mode = mode;
+		ret->i_uid = ret->i_gid = 0;
+		ret->i_blksize = PAGE_CACHE_SIZE;
+		ret->i_blocks = 0;
+		ret->i_atime = ret->i_mtime = ret->i_ctime = CURRENT_TIME;
+	}
+	return ret;
+}
+
+#define BOOL_INO_OFFSET 30
+
+static ssize_t sel_read_bool(struct file *filep, char __user *buf,
+			     size_t count, loff_t *ppos)
+{
+	char *page = NULL;
+	ssize_t length;
+	ssize_t end;
+	ssize_t ret;
+	int cur_enforcing;
+	struct inode *inode;
+
+	down(&sel_sem);
+
+	ret = -EFAULT;
+
+	/* check to see if this file has been deleted */
+	if (!filep->f_op)
+		goto out;
+
+	if (count < 0 || count > PAGE_SIZE) {
+		ret = -EINVAL;
+		goto out;
+	}
+	if (!(page = (char*)get_zeroed_page(GFP_KERNEL))) {
+		ret = -ENOMEM;
+		goto out;
+	}
+
+	inode = filep->f_dentry->d_inode;
+	cur_enforcing = security_get_bool_value(inode->i_ino - BOOL_INO_OFFSET);
+	if (cur_enforcing < 0) {
+		ret = cur_enforcing;
+		goto out;
+	}
+
+	length = scnprintf(page, PAGE_SIZE, "%d %d", cur_enforcing,
+			  bool_pending_values[inode->i_ino - BOOL_INO_OFFSET]);
+	if (length < 0) {
+		ret = length;
+		goto out;
+	}
+
+	if (*ppos >= length) {
+		ret = 0;
+		goto out;
+	}
+	if (count + *ppos > length)
+		count = length - *ppos;
+	end = count + *ppos;
+	if (copy_to_user(buf, (char *) page + *ppos, count)) {
+		ret = -EFAULT;
+		goto out;
+	}
+	*ppos = end;
+	ret = count;
+out:
+	up(&sel_sem);
+	if (page)
+		free_page((unsigned long)page);
+	return ret;
+}
+
+static ssize_t sel_write_bool(struct file *filep, const char __user *buf,
+			      size_t count, loff_t *ppos)
+{
+	char *page = NULL;
+	ssize_t length = -EFAULT;
+	int new_value;
+	struct inode *inode;
+
+	down(&sel_sem);
+
+	length = task_has_security(current, SECURITY__SETBOOL);
+	if (length)
+		goto out;
+
+	/* check to see if this file has been deleted */
+	if (!filep->f_op)
+		goto out;
+
+	if (count < 0 || count >= PAGE_SIZE) {
+		length = -ENOMEM;
+		goto out;
+	}
+	if (*ppos != 0) {
+		/* No partial writes. */
+		goto out;
+	}
+	page = (char*)get_zeroed_page(GFP_KERNEL);
+	if (!page) {
+		length = -ENOMEM;
+		goto out;
+	}
+
+	if (copy_from_user(page, buf, count))
+		goto out;
+
+	length = -EINVAL;
+	if (sscanf(page, "%d", &new_value) != 1)
+		goto out;
+
+	if (new_value)
+		new_value = 1;
+
+	inode = filep->f_dentry->d_inode;
+	bool_pending_values[inode->i_ino - BOOL_INO_OFFSET] = new_value;
+	length = count;
+
+out:
+	up(&sel_sem);
+	if (page)
+		free_page((unsigned long) page);
+	return length;
+}
+
+static struct file_operations sel_bool_ops = {
+	.read           = sel_read_bool,
+	.write          = sel_write_bool,
+};
+
+static ssize_t sel_commit_bools_write(struct file *filep,
+				      const char __user *buf,
+				      size_t count, loff_t *ppos)
+{
+	char *page = NULL;
+	ssize_t length = -EFAULT;
+	int new_value;
+
+	down(&sel_sem);
+
+	length = task_has_security(current, SECURITY__SETBOOL);
+	if (length)
+		goto out;
+
+	/* check to see if this file has been deleted */
+	if (!filep->f_op)
+		goto out;
+
+	if (count < 0 || count >= PAGE_SIZE) {
+		length = -ENOMEM;
+		goto out;
+	}
+	if (*ppos != 0) {
+		/* No partial writes. */
+		goto out;
+	}
+	page = (char*)get_zeroed_page(GFP_KERNEL);
+	if (!page) {
+		length = -ENOMEM;
+		goto out;
+	}
+
+	if (copy_from_user(page, buf, count))
+		goto out;
+
+	length = -EINVAL;
+	if (sscanf(page, "%d", &new_value) != 1)
+		goto out;
+
+	if (new_value) {
+		security_set_bools(bool_num, bool_pending_values);
+	}
+
+	length = count;
+
+out:
+	up(&sel_sem);
+	if (page)
+		free_page((unsigned long) page);
+	return length;
+}
+
+static struct file_operations sel_commit_bools_ops = {
+	.write          = sel_commit_bools_write,
+};
+
+/* delete booleans - partial revoke() from
+ * fs/proc/generic.c proc_kill_inodes */
+static void sel_remove_bools(struct dentry *de)
+{
+	struct list_head *p, *node;
+	struct super_block *sb = de->d_sb;
+
+	spin_lock(&dcache_lock);
+	node = de->d_subdirs.next;
+	while (node != &de->d_subdirs) {
+		struct dentry *d = list_entry(node, struct dentry, d_child);
+		list_del_init(node);
+
+		if (d->d_inode) {
+			d = dget_locked(d);
+			spin_unlock(&dcache_lock);
+			d_delete(d);
+			simple_unlink(de->d_inode, d);
+			dput(d);
+			spin_lock(&dcache_lock);
+		}
+		node = de->d_subdirs.next;
+	}
+
+	spin_unlock(&dcache_lock);
+
+	file_list_lock();
+	list_for_each(p, &sb->s_files) {
+		struct file * filp = list_entry(p, struct file, f_list);
+		struct dentry * dentry = filp->f_dentry;
+
+		if (dentry->d_parent != de) {
+			continue;
+		}
+		filp->f_op = NULL;
+	}
+	file_list_unlock();
+}
+
+#define BOOL_DIR_NAME "booleans"
+
+static int sel_make_bools(void)
+{
+	int i, ret = 0;
+	ssize_t len;
+	struct dentry *dentry = NULL;
+	struct dentry *dir = bool_dir;
+	struct inode *inode = NULL;
+	struct inode_security_struct *isec;
+	char **names = NULL, *page;
+	int num;
+	int *values = NULL;
+	u32 sid;
+
+	/* remove any existing files */
+	if (bool_pending_values)
+		kfree(bool_pending_values);
+
+	sel_remove_bools(dir);
+
+	if (!(page = (char*)get_zeroed_page(GFP_KERNEL)))
+		return -ENOMEM;
+
+	ret = security_get_bools(&num, &names, &values);
+	if (ret != 0)
+		goto out;
+
+	for (i = 0; i < num; i++) {
+		dentry = d_alloc_name(dir, names[i]);
+		if (!dentry) {
+			ret = -ENOMEM;
+			goto err;
+		}
+		inode = sel_make_inode(dir->d_sb, S_IFREG | S_IRUGO | S_IWUSR);
+		if (!inode) {
+			ret = -ENOMEM;
+			goto err;
+		}
+
+		len = snprintf(page, PAGE_SIZE, "/%s/%s", BOOL_DIR_NAME, names[i]);
+		if (len < 0) {
+			ret = -EINVAL;
+			goto err;
+		} else if (len >= PAGE_SIZE) {
+			ret = -ENAMETOOLONG;
+			goto err;
+		}
+		isec = (struct inode_security_struct*)inode->i_security;
+		if ((ret = security_genfs_sid("selinuxfs", page, SECCLASS_FILE, &sid)))
+			goto err;
+		isec->sid = sid;
+		isec->initialized = 1;
+		inode->i_fop = &sel_bool_ops;
+		inode->i_ino = i + BOOL_INO_OFFSET;
+		d_add(dentry, inode);
+	}
+	bool_num = num;
+	bool_pending_values = values;
+out:
+	free_page((unsigned long)page);
+	if (names) {
+		for (i = 0; i < num; i++) {
+			if (names[i])
+				kfree(names[i]);
+		}
+		kfree(names);
+	}
+	return ret;
+err:
+	d_genocide(dir);
+	ret = -ENOMEM;
+	goto out;
+}
+
+#define NULL_FILE_NAME "null"
+
+struct dentry *selinux_null = NULL;
+
+static int sel_fill_super(struct super_block * sb, void * data, int silent)
+{
+	int ret;
+	struct dentry *dentry;
+	struct inode *inode;
+	struct inode_security_struct *isec;
+
+	static struct tree_descr selinux_files[] = {
+		[SEL_LOAD] = {"load", &sel_load_ops, S_IRUSR|S_IWUSR},
+		[SEL_ENFORCE] = {"enforce", &sel_enforce_ops, S_IRUGO|S_IWUSR},
+		[SEL_CONTEXT] = {"context", &sel_context_ops, S_IRUGO|S_IWUGO},
+		[SEL_ACCESS] = {"access", &transaction_ops, S_IRUGO|S_IWUGO},
+		[SEL_CREATE] = {"create", &transaction_ops, S_IRUGO|S_IWUGO},
+		[SEL_RELABEL] = {"relabel", &transaction_ops, S_IRUGO|S_IWUGO},
+		[SEL_USER] = {"user", &transaction_ops, S_IRUGO|S_IWUGO},
+		[SEL_POLICYVERS] = {"policyvers", &sel_policyvers_ops, S_IRUGO},
+		[SEL_COMMIT_BOOLS] = {"commit_pending_bools", &sel_commit_bools_ops, S_IWUSR},
+		[SEL_MLS] = {"mls", &sel_mls_ops, S_IRUGO},
+		[SEL_DISABLE] = {"disable", &sel_disable_ops, S_IWUSR},
+		/* last one */ {""}
+	};
+	ret = simple_fill_super(sb, SELINUX_MAGIC, selinux_files);
+	if (ret)
+		return ret;
+
+	dentry = d_alloc_name(sb->s_root, BOOL_DIR_NAME);
+	if (!dentry)
+		return -ENOMEM;
+
+	inode = sel_make_inode(sb, S_IFDIR | S_IRUGO | S_IXUGO);
+	if (!inode)
+		goto out;
+	inode->i_op = &simple_dir_inode_operations;
+	inode->i_fop = &simple_dir_operations;
+	d_add(dentry, inode);
+	bool_dir = dentry;
+	ret = sel_make_bools();
+	if (ret)
+		goto out;
+
+	dentry = d_alloc_name(sb->s_root, NULL_FILE_NAME);
+	if (!dentry)
+		return -ENOMEM;
+
+	inode = sel_make_inode(sb, S_IFCHR | S_IRUGO | S_IWUGO);
+	if (!inode)
+		goto out;
+	isec = (struct inode_security_struct*)inode->i_security;
+	isec->sid = SECINITSID_DEVNULL;
+	isec->sclass = SECCLASS_CHR_FILE;
+	isec->initialized = 1;
+
+	init_special_inode(inode, S_IFCHR | S_IRUGO | S_IWUGO, MKDEV(MEM_MAJOR, 3));
+	d_add(dentry, inode);
+	selinux_null = dentry;
+
+	return 0;
+out:
+	dput(dentry);
+	printk(KERN_ERR "%s:  failed while creating inodes\n", __FUNCTION__);
+	return -ENOMEM;
+}
+
+static struct super_block *sel_get_sb(struct file_system_type *fs_type,
+				      int flags, const char *dev_name, void *data)
+{
+	return get_sb_single(fs_type, flags, data, sel_fill_super);
+}
+
+static struct file_system_type sel_fs_type = {
+	.name		= "selinuxfs",
+	.get_sb		= sel_get_sb,
+	.kill_sb	= kill_litter_super,
+};
+
+struct vfsmount *selinuxfs_mount;
+
+static int __init init_sel_fs(void)
+{
+	int err;
+
+	if (!selinux_enabled)
+		return 0;
+	err = register_filesystem(&sel_fs_type);
+	if (!err) {
+		selinuxfs_mount = kern_mount(&sel_fs_type);
+		if (IS_ERR(selinuxfs_mount)) {
+			printk(KERN_ERR "selinuxfs:  could not mount!\n");
+			err = PTR_ERR(selinuxfs_mount);
+			selinuxfs_mount = NULL;
+		}
+	}
+	return err;
+}
+
+__initcall(init_sel_fs);
+
+#ifdef CONFIG_SECURITY_SELINUX_DISABLE
+void exit_sel_fs(void)
+{
+	unregister_filesystem(&sel_fs_type);
+}
+#endif

extra/linux-2.6.10/security/selinux/ss/Makefile

@@ -0,0 +1,11 @@
+#
+# Makefile for building the SELinux security server as part of the kernel tree.
+#
+
+EXTRA_CFLAGS += -Isecurity/selinux/include
+obj-y := ss.o
+
+ss-y := ebitmap.o hashtab.o symtab.o sidtab.o avtab.o policydb.o services.o conditional.o
+
+ss-$(CONFIG_SECURITY_SELINUX_MLS) += mls.o
+

extra/linux-2.6.10/security/selinux/ss/avtab.c

@@ -0,0 +1,414 @@
+/*
+ * Implementation of the access vector table type.
+ *
+ * Author : Stephen Smalley, <sds@epoch.ncsc.mil>
+ */
+
+/* Updated: Frank Mayer <mayerf@tresys.com> and Karl MacMillan <kmacmillan@tresys.com>
+ *
+ * 	Added conditional policy language extensions
+ *
+ * Copyright (C) 2003 Tresys Technology, LLC
+ *	This program is free software; you can redistribute it and/or modify
+ *  	it under the terms of the GNU General Public License as published by
+ *	the Free Software Foundation, version 2.
+ */
+
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/vmalloc.h>
+#include <linux/errno.h>
+
+#include "avtab.h"
+#include "policydb.h"
+
+#define AVTAB_HASH(keyp) \
+((keyp->target_class + \
+ (keyp->target_type << 2) + \
+ (keyp->source_type << 9)) & \
+ AVTAB_HASH_MASK)
+
+static kmem_cache_t *avtab_node_cachep;
+
+static struct avtab_node*
+avtab_insert_node(struct avtab *h, int hvalue, struct avtab_node * prev, struct avtab_node * cur,
+		  struct avtab_key *key, struct avtab_datum *datum)
+{
+	struct avtab_node * newnode;
+	newnode = kmem_cache_alloc(avtab_node_cachep, SLAB_KERNEL);
+	if (newnode == NULL)
+		return NULL;
+	memset(newnode, 0, sizeof(struct avtab_node));
+	newnode->key = *key;
+	newnode->datum = *datum;
+	if (prev) {
+		newnode->next = prev->next;
+		prev->next = newnode;
+	} else {
+		newnode->next = h->htable[hvalue];
+		h->htable[hvalue] = newnode;
+	}
+
+	h->nel++;
+	return newnode;
+}
+
+int avtab_insert(struct avtab *h, struct avtab_key *key, struct avtab_datum *datum)
+{
+	int hvalue;
+	struct avtab_node *prev, *cur, *newnode;
+
+	if (!h)
+		return -EINVAL;
+
+	hvalue = AVTAB_HASH(key);
+	for (prev = NULL, cur = h->htable[hvalue];
+	     cur;
+	     prev = cur, cur = cur->next) {
+		if (key->source_type == cur->key.source_type &&
+		    key->target_type == cur->key.target_type &&
+		    key->target_class == cur->key.target_class &&
+		    (datum->specified & cur->datum.specified))
+			return -EEXIST;
+		if (key->source_type < cur->key.source_type)
+			break;
+		if (key->source_type == cur->key.source_type &&
+		    key->target_type < cur->key.target_type)
+			break;
+		if (key->source_type == cur->key.source_type &&
+		    key->target_type == cur->key.target_type &&
+		    key->target_class < cur->key.target_class)
+			break;
+	}
+
+	newnode = avtab_insert_node(h, hvalue, prev, cur, key, datum);
+	if(!newnode)
+		return -ENOMEM;
+
+	return 0;
+}
+
+/* Unlike avtab_insert(), this function allow multiple insertions of the same
+ * key/specified mask into the table, as needed by the conditional avtab.
+ * It also returns a pointer to the node inserted.
+ */
+struct avtab_node *
+avtab_insert_nonunique(struct avtab * h, struct avtab_key * key, struct avtab_datum * datum)
+{
+	int hvalue;
+	struct avtab_node *prev, *cur, *newnode;
+
+	if (!h)
+		return NULL;
+	hvalue = AVTAB_HASH(key);
+	for (prev = NULL, cur = h->htable[hvalue];
+	     cur;
+	     prev = cur, cur = cur->next) {
+		if (key->source_type == cur->key.source_type &&
+		    key->target_type == cur->key.target_type &&
+		    key->target_class == cur->key.target_class &&
+		    (datum->specified & cur->datum.specified))
+			break;
+		if (key->source_type < cur->key.source_type)
+			break;
+		if (key->source_type == cur->key.source_type &&
+		    key->target_type < cur->key.target_type)
+			break;
+		if (key->source_type == cur->key.source_type &&
+		    key->target_type == cur->key.target_type &&
+		    key->target_class < cur->key.target_class)
+			break;
+	}
+	newnode = avtab_insert_node(h, hvalue, prev, cur, key, datum);
+
+	return newnode;
+}
+
+struct avtab_datum *avtab_search(struct avtab *h, struct avtab_key *key, int specified)
+{
+	int hvalue;
+	struct avtab_node *cur;
+
+	if (!h)
+		return NULL;
+
+	hvalue = AVTAB_HASH(key);
+	for (cur = h->htable[hvalue]; cur; cur = cur->next) {
+		if (key->source_type == cur->key.source_type &&
+		    key->target_type == cur->key.target_type &&
+		    key->target_class == cur->key.target_class &&
+		    (specified & cur->datum.specified))
+			return &cur->datum;
+
+		if (key->source_type < cur->key.source_type)
+			break;
+		if (key->source_type == cur->key.source_type &&
+		    key->target_type < cur->key.target_type)
+			break;
+		if (key->source_type == cur->key.source_type &&
+		    key->target_type == cur->key.target_type &&
+		    key->target_class < cur->key.target_class)
+			break;
+	}
+
+	return NULL;
+}
+
+/* This search function returns a node pointer, and can be used in
+ * conjunction with avtab_search_next_node()
+ */
+struct avtab_node*
+avtab_search_node(struct avtab *h, struct avtab_key *key, int specified)
+{
+	int hvalue;
+	struct avtab_node *cur;
+
+	if (!h)
+		return NULL;
+
+	hvalue = AVTAB_HASH(key);
+	for (cur = h->htable[hvalue]; cur; cur = cur->next) {
+		if (key->source_type == cur->key.source_type &&
+		    key->target_type == cur->key.target_type &&
+		    key->target_class == cur->key.target_class &&
+		    (specified & cur->datum.specified))
+			return cur;
+
+		if (key->source_type < cur->key.source_type)
+			break;
+		if (key->source_type == cur->key.source_type &&
+		    key->target_type < cur->key.target_type)
+			break;
+		if (key->source_type == cur->key.source_type &&
+		    key->target_type == cur->key.target_type &&
+		    key->target_class < cur->key.target_class)
+			break;
+	}
+	return NULL;
+}
+
+struct avtab_node*
+avtab_search_node_next(struct avtab_node *node, int specified)
+{
+	struct avtab_node *cur;
+
+	if (!node)
+		return NULL;
+
+	for (cur = node->next; cur; cur = cur->next) {
+		if (node->key.source_type == cur->key.source_type &&
+		    node->key.target_type == cur->key.target_type &&
+		    node->key.target_class == cur->key.target_class &&
+		    (specified & cur->datum.specified))
+			return cur;
+
+		if (node->key.source_type < cur->key.source_type)
+			break;
+		if (node->key.source_type == cur->key.source_type &&
+		    node->key.target_type < cur->key.target_type)
+			break;
+		if (node->key.source_type == cur->key.source_type &&
+		    node->key.target_type == cur->key.target_type &&
+		    node->key.target_class < cur->key.target_class)
+			break;
+	}
+	return NULL;
+}
+
+void avtab_destroy(struct avtab *h)
+{
+	int i;
+	struct avtab_node *cur, *temp;
+
+	if (!h || !h->htable)
+		return;
+
+	for (i = 0; i < AVTAB_SIZE; i++) {
+		cur = h->htable[i];
+		while (cur != NULL) {
+			temp = cur;
+			cur = cur->next;
+			kmem_cache_free(avtab_node_cachep, temp);
+		}
+		h->htable[i] = NULL;
+	}
+	vfree(h->htable);
+	h->htable = NULL;
+}
+
+
+int avtab_map(struct avtab *h,
+	      int (*apply) (struct avtab_key *k,
+			    struct avtab_datum *d,
+			    void *args),
+	      void *args)
+{
+	int i, ret;
+	struct avtab_node *cur;
+
+	if (!h)
+		return 0;
+
+	for (i = 0; i < AVTAB_SIZE; i++) {
+		cur = h->htable[i];
+		while (cur != NULL) {
+			ret = apply(&cur->key, &cur->datum, args);
+			if (ret)
+				return ret;
+			cur = cur->next;
+		}
+	}
+	return 0;
+}
+
+int avtab_init(struct avtab *h)
+{
+	int i;
+
+	h->htable = vmalloc(sizeof(*(h->htable)) * AVTAB_SIZE);
+	if (!h->htable)
+		return -ENOMEM;
+	for (i = 0; i < AVTAB_SIZE; i++)
+		h->htable[i] = NULL;
+	h->nel = 0;
+	return 0;
+}
+
+void avtab_hash_eval(struct avtab *h, char *tag)
+{
+	int i, chain_len, slots_used, max_chain_len;
+	struct avtab_node *cur;
+
+	slots_used = 0;
+	max_chain_len = 0;
+	for (i = 0; i < AVTAB_SIZE; i++) {
+		cur = h->htable[i];
+		if (cur) {
+			slots_used++;
+			chain_len = 0;
+			while (cur) {
+				chain_len++;
+				cur = cur->next;
+			}
+
+			if (chain_len > max_chain_len)
+				max_chain_len = chain_len;
+		}
+	}
+
+	printk(KERN_INFO "%s:  %d entries and %d/%d buckets used, longest "
+	       "chain length %d\n", tag, h->nel, slots_used, AVTAB_SIZE,
+	       max_chain_len);
+}
+
+int avtab_read_item(void *fp, struct avtab_datum *avdatum, struct avtab_key *avkey)
+{
+	__u32 *buf;
+	__u32 items, items2;
+
+	memset(avkey, 0, sizeof(struct avtab_key));
+	memset(avdatum, 0, sizeof(struct avtab_datum));
+
+	buf = next_entry(fp, sizeof(__u32));
+	if (!buf) {
+		printk(KERN_ERR "security: avtab: truncated entry\n");
+		goto bad;
+	}
+	items2 = le32_to_cpu(buf[0]);
+	buf = next_entry(fp, sizeof(__u32)*items2);
+	if (!buf) {
+		printk(KERN_ERR "security: avtab: truncated entry\n");
+		goto bad;
+	}
+	items = 0;
+	avkey->source_type = le32_to_cpu(buf[items++]);
+	avkey->target_type = le32_to_cpu(buf[items++]);
+	avkey->target_class = le32_to_cpu(buf[items++]);
+	avdatum->specified = le32_to_cpu(buf[items++]);
+	if (!(avdatum->specified & (AVTAB_AV | AVTAB_TYPE))) {
+		printk(KERN_ERR "security: avtab: null entry\n");
+		goto bad;
+	}
+	if ((avdatum->specified & AVTAB_AV) &&
+	    (avdatum->specified & AVTAB_TYPE)) {
+		printk(KERN_ERR "security: avtab: entry has both access vectors and types\n");
+		goto bad;
+	}
+	if (avdatum->specified & AVTAB_AV) {
+		if (avdatum->specified & AVTAB_ALLOWED)
+			avtab_allowed(avdatum) = le32_to_cpu(buf[items++]);
+		if (avdatum->specified & AVTAB_AUDITDENY)
+			avtab_auditdeny(avdatum) = le32_to_cpu(buf[items++]);
+		if (avdatum->specified & AVTAB_AUDITALLOW)
+			avtab_auditallow(avdatum) = le32_to_cpu(buf[items++]);
+	} else {
+		if (avdatum->specified & AVTAB_TRANSITION)
+			avtab_transition(avdatum) = le32_to_cpu(buf[items++]);
+		if (avdatum->specified & AVTAB_CHANGE)
+			avtab_change(avdatum) = le32_to_cpu(buf[items++]);
+		if (avdatum->specified & AVTAB_MEMBER)
+			avtab_member(avdatum) = le32_to_cpu(buf[items++]);
+	}
+	if (items != items2) {
+		printk(KERN_ERR "security: avtab: entry only had %d items, expected %d\n",
+		       items2, items);
+		goto bad;
+	}
+
+	return 0;
+bad:
+	return -1;
+}
+
+int avtab_read(struct avtab *a, void *fp, u32 config)
+{
+	int i, rc = -EINVAL;
+	struct avtab_key avkey;
+	struct avtab_datum avdatum;
+	u32 *buf;
+	u32 nel;
+
+
+	buf = next_entry(fp, sizeof(u32));
+	if (!buf) {
+		printk(KERN_ERR "security: avtab: truncated table\n");
+		goto bad;
+	}
+	nel = le32_to_cpu(buf[0]);
+	if (!nel) {
+		printk(KERN_ERR "security: avtab: table is empty\n");
+		goto bad;
+	}
+	for (i = 0; i < nel; i++) {
+		if (avtab_read_item(fp, &avdatum, &avkey))
+			goto bad;
+		rc = avtab_insert(a, &avkey, &avdatum);
+		if (rc) {
+			if (rc == -ENOMEM)
+				printk(KERN_ERR "security: avtab: out of memory\n");
+			if (rc == -EEXIST)
+				printk(KERN_ERR "security: avtab: duplicate entry\n");
+			goto bad;
+		}
+	}
+
+	rc = 0;
+out:
+	return rc;
+
+bad:
+	avtab_destroy(a);
+	goto out;
+}
+
+void avtab_cache_init(void)
+{
+	avtab_node_cachep = kmem_cache_create("avtab_node",
+					      sizeof(struct avtab_node),
+					      0, SLAB_PANIC, NULL, NULL);
+}
+
+void avtab_cache_destroy(void)
+{
+	kmem_cache_destroy (avtab_node_cachep);
+}

extra/linux-2.6.10/security/selinux/ss/avtab.h

@@ -0,0 +1,91 @@
+/*
+ * An access vector table (avtab) is a hash table
+ * of access vectors and transition types indexed
+ * by a type pair and a class.  An access vector
+ * table is used to represent the type enforcement
+ * tables.
+ *
+ *  Author : Stephen Smalley, <sds@epoch.ncsc.mil>
+ */
+
+/* Updated: Frank Mayer <mayerf@tresys.com> and Karl MacMillan <kmacmillan@tresys.com>
+ *
+ * 	Added conditional policy language extensions
+ *
+ * Copyright (C) 2003 Tresys Technology, LLC
+ *	This program is free software; you can redistribute it and/or modify
+ *  	it under the terms of the GNU General Public License as published by
+ *	the Free Software Foundation, version 2.
+ */
+#ifndef _SS_AVTAB_H_
+#define _SS_AVTAB_H_
+
+struct avtab_key {
+	u32 source_type;	/* source type */
+	u32 target_type;	/* target type */
+	u32 target_class;	/* target object class */
+};
+
+struct avtab_datum {
+#define AVTAB_ALLOWED     1
+#define AVTAB_AUDITALLOW  2
+#define AVTAB_AUDITDENY   4
+#define AVTAB_AV         (AVTAB_ALLOWED | AVTAB_AUDITALLOW | AVTAB_AUDITDENY)
+#define AVTAB_TRANSITION 16
+#define AVTAB_MEMBER     32
+#define AVTAB_CHANGE     64
+#define AVTAB_TYPE       (AVTAB_TRANSITION | AVTAB_MEMBER | AVTAB_CHANGE)
+#define AVTAB_ENABLED    0x80000000 /* reserved for used in cond_avtab */
+	u32 specified;	/* what fields are specified */
+	u32 data[3];	/* access vectors or types */
+#define avtab_allowed(x) (x)->data[0]
+#define avtab_auditdeny(x) (x)->data[1]
+#define avtab_auditallow(x) (x)->data[2]
+#define avtab_transition(x) (x)->data[0]
+#define avtab_change(x) (x)->data[1]
+#define avtab_member(x) (x)->data[2]
+};
+
+struct avtab_node {
+	struct avtab_key key;
+	struct avtab_datum datum;
+	struct avtab_node *next;
+};
+
+struct avtab {
+	struct avtab_node **htable;
+	u32 nel;	/* number of elements */
+};
+
+int avtab_init(struct avtab *);
+int avtab_insert(struct avtab *h, struct avtab_key *k, struct avtab_datum *d);
+struct avtab_datum *avtab_search(struct avtab *h, struct avtab_key *k, int specified);
+void avtab_destroy(struct avtab *h);
+int avtab_map(struct avtab *h,
+	      int (*apply) (struct avtab_key *k,
+			    struct avtab_datum *d,
+			    void *args),
+	      void *args);
+void avtab_hash_eval(struct avtab *h, char *tag);
+
+int avtab_read_item(void *fp, struct avtab_datum *avdatum, struct avtab_key *avkey);
+int avtab_read(struct avtab *a, void *fp, u32 config);
+
+struct avtab_node *avtab_insert_nonunique(struct avtab *h, struct avtab_key *key,
+					  struct avtab_datum *datum);
+
+struct avtab_node *avtab_search_node(struct avtab *h, struct avtab_key *key, int specified);
+
+struct avtab_node *avtab_search_node_next(struct avtab_node *node, int specified);
+
+void avtab_cache_init(void);
+void avtab_cache_destroy(void);
+
+#define AVTAB_HASH_BITS 15
+#define AVTAB_HASH_BUCKETS (1 << AVTAB_HASH_BITS)
+#define AVTAB_HASH_MASK (AVTAB_HASH_BUCKETS-1)
+
+#define AVTAB_SIZE AVTAB_HASH_BUCKETS
+
+#endif	/* _SS_AVTAB_H_ */
+

extra/linux-2.6.10/security/selinux/ss/conditional.c

@@ -0,0 +1,487 @@
+/* Authors: Karl MacMillan <kmacmillan@tresys.com>
+ *          Frank Mayer <mayerf@tresys.com>
+ *
+ * Copyright (C) 2003 - 2004 Tresys Technology, LLC
+ *	This program is free software; you can redistribute it and/or modify
+ *  	it under the terms of the GNU General Public License as published by
+ *	the Free Software Foundation, version 2.
+ */
+
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/spinlock.h>
+#include <asm/semaphore.h>
+#include <linux/slab.h>
+
+#include "security.h"
+#include "conditional.h"
+
+/*
+ * cond_evaluate_expr evaluates a conditional expr
+ * in reverse polish notation. It returns true (1), false (0),
+ * or undefined (-1). Undefined occurs when the expression
+ * exceeds the stack depth of COND_EXPR_MAXDEPTH.
+ */
+static int cond_evaluate_expr(struct policydb *p, struct cond_expr *expr)
+{
+
+	struct cond_expr *cur;
+	int s[COND_EXPR_MAXDEPTH];
+	int sp = -1;
+
+	for (cur = expr; cur != NULL; cur = cur->next) {
+		switch (cur->expr_type) {
+		case COND_BOOL:
+			if (sp == (COND_EXPR_MAXDEPTH - 1))
+				return -1;
+			sp++;
+			s[sp] = p->bool_val_to_struct[cur->bool - 1]->state;
+			break;
+		case COND_NOT:
+			if (sp < 0)
+				return -1;
+			s[sp] = !s[sp];
+			break;
+		case COND_OR:
+			if (sp < 1)
+				return -1;
+			sp--;
+			s[sp] |= s[sp + 1];
+			break;
+		case COND_AND:
+			if (sp < 1)
+				return -1;
+			sp--;
+			s[sp] &= s[sp + 1];
+			break;
+		case COND_XOR:
+			if (sp < 1)
+				return -1;
+			sp--;
+			s[sp] ^= s[sp + 1];
+			break;
+		case COND_EQ:
+			if (sp < 1)
+				return -1;
+			sp--;
+			s[sp] = (s[sp] == s[sp + 1]);
+			break;
+		case COND_NEQ:
+			if (sp < 1)
+				return -1;
+			sp--;
+			s[sp] = (s[sp] != s[sp + 1]);
+			break;
+		default:
+			return -1;
+		}
+	}
+	return s[0];
+}
+
+/*
+ * evaluate_cond_node evaluates the conditional stored in
+ * a struct cond_node and if the result is different than the
+ * current state of the node it sets the rules in the true/false
+ * list appropriately. If the result of the expression is undefined
+ * all of the rules are disabled for safety.
+ */
+int evaluate_cond_node(struct policydb *p, struct cond_node *node)
+{
+	int new_state;
+	struct cond_av_list* cur;
+
+	new_state = cond_evaluate_expr(p, node->expr);
+	if (new_state != node->cur_state) {
+		node->cur_state = new_state;
+		if (new_state == -1)
+			printk(KERN_ERR "security: expression result was undefined - disabling all rules.\n");
+		/* turn the rules on or off */
+		for (cur = node->true_list; cur != NULL; cur = cur->next) {
+			if (new_state <= 0) {
+				cur->node->datum.specified &= ~AVTAB_ENABLED;
+			} else {
+				cur->node->datum.specified |= AVTAB_ENABLED;
+			}
+		}
+
+		for (cur = node->false_list; cur != NULL; cur = cur->next) {
+			/* -1 or 1 */
+			if (new_state) {
+				cur->node->datum.specified &= ~AVTAB_ENABLED;
+			} else {
+				cur->node->datum.specified |= AVTAB_ENABLED;
+			}
+		}
+	}
+	return 0;
+}
+
+int cond_policydb_init(struct policydb *p)
+{
+	p->bool_val_to_struct = NULL;
+	p->cond_list = NULL;
+	if (avtab_init(&p->te_cond_avtab))
+		return -1;
+
+	return 0;
+}
+
+static void cond_av_list_destroy(struct cond_av_list *list)
+{
+	struct cond_av_list *cur, *next;
+	for (cur = list; cur != NULL; cur = next) {
+		next = cur->next;
+		/* the avtab_ptr_t node is destroy by the avtab */
+		kfree(cur);
+	}
+}
+
+static void cond_node_destroy(struct cond_node *node)
+{
+	struct cond_expr *cur_expr, *next_expr;
+
+	for (cur_expr = node->expr; cur_expr != NULL; cur_expr = next_expr) {
+		next_expr = cur_expr->next;
+		kfree(cur_expr);
+	}
+	cond_av_list_destroy(node->true_list);
+	cond_av_list_destroy(node->false_list);
+	kfree(node);
+}
+
+static void cond_list_destroy(struct cond_node *list)
+{
+	struct cond_node *next, *cur;
+
+	if (list == NULL)
+		return;
+
+	for (cur = list; cur != NULL; cur = next) {
+		next = cur->next;
+		cond_node_destroy(cur);
+	}
+}
+
+void cond_policydb_destroy(struct policydb *p)
+{
+	if (p->bool_val_to_struct != NULL)
+		kfree(p->bool_val_to_struct);
+	avtab_destroy(&p->te_cond_avtab);
+	cond_list_destroy(p->cond_list);
+}
+
+int cond_init_bool_indexes(struct policydb *p)
+{
+	if (p->bool_val_to_struct)
+		kfree(p->bool_val_to_struct);
+	p->bool_val_to_struct = (struct cond_bool_datum**)
+		kmalloc(p->p_bools.nprim * sizeof(struct cond_bool_datum*), GFP_KERNEL);
+	if (!p->bool_val_to_struct)
+		return -1;
+	return 0;
+}
+
+int cond_destroy_bool(void *key, void *datum, void *p)
+{
+	if (key)
+		kfree(key);
+	kfree(datum);
+	return 0;
+}
+
+int cond_index_bool(void *key, void *datum, void *datap)
+{
+	struct policydb *p;
+	struct cond_bool_datum *booldatum;
+
+	booldatum = datum;
+	p = datap;
+
+	if (!booldatum->value || booldatum->value > p->p_bools.nprim)
+		return -EINVAL;
+
+	p->p_bool_val_to_name[booldatum->value - 1] = key;
+	p->bool_val_to_struct[booldatum->value -1] = booldatum;
+
+	return 0;
+}
+
+int bool_isvalid(struct cond_bool_datum *b)
+{
+	if (!(b->state == 0 || b->state == 1))
+		return 0;
+	return 1;
+}
+
+int cond_read_bool(struct policydb *p, struct hashtab *h, void *fp)
+{
+	char *key = NULL;
+	struct cond_bool_datum *booldatum;
+	__u32 *buf, len;
+
+	booldatum = kmalloc(sizeof(struct cond_bool_datum), GFP_KERNEL);
+	if (!booldatum)
+		return -1;
+	memset(booldatum, 0, sizeof(struct cond_bool_datum));
+
+	buf = next_entry(fp, sizeof(__u32) * 3);
+	if (!buf)
+		goto err;
+
+	booldatum->value = le32_to_cpu(buf[0]);
+	booldatum->state = le32_to_cpu(buf[1]);
+
+	if (!bool_isvalid(booldatum))
+		goto err;
+
+	len = le32_to_cpu(buf[2]);
+
+	buf = next_entry(fp, len);
+	if (!buf)
+		goto err;
+	key = kmalloc(len + 1, GFP_KERNEL);
+	if (!key)
+		goto err;
+	memcpy(key, buf, len);
+	key[len] = 0;
+	if (hashtab_insert(h, key, booldatum))
+		goto err;
+
+	return 0;
+err:
+	cond_destroy_bool(key, booldatum, NULL);
+	return -1;
+}
+
+static int cond_read_av_list(struct policydb *p, void *fp, struct cond_av_list **ret_list,
+			     struct cond_av_list *other)
+{
+	struct cond_av_list *list, *last = NULL, *cur;
+	struct avtab_key key;
+	struct avtab_datum datum;
+	struct avtab_node *node_ptr;
+	int len, i;
+	__u32 *buf;
+	__u8 found;
+
+	*ret_list = NULL;
+
+	len = 0;
+	buf = next_entry(fp, sizeof(__u32));
+	if (!buf)
+		return -1;
+
+	len = le32_to_cpu(buf[0]);
+	if (len == 0) {
+		return 0;
+	}
+
+	for (i = 0; i < len; i++) {
+		if (avtab_read_item(fp, &datum, &key))
+			goto err;
+
+		/*
+		 * For type rules we have to make certain there aren't any
+		 * conflicting rules by searching the te_avtab and the
+		 * cond_te_avtab.
+		 */
+		if (datum.specified & AVTAB_TYPE) {
+			if (avtab_search(&p->te_avtab, &key, AVTAB_TYPE)) {
+				printk("security: type rule already exists outside of a conditional.");
+				goto err;
+			}
+			/*
+			 * If we are reading the false list other will be a pointer to
+			 * the true list. We can have duplicate entries if there is only
+			 * 1 other entry and it is in our true list.
+			 *
+			 * If we are reading the true list (other == NULL) there shouldn't
+			 * be any other entries.
+			 */
+			if (other) {
+				node_ptr = avtab_search_node(&p->te_cond_avtab, &key, AVTAB_TYPE);
+				if (node_ptr) {
+					if (avtab_search_node_next(node_ptr, AVTAB_TYPE)) {
+						printk("security: too many conflicting type rules.");
+						goto err;
+					}
+					found = 0;
+					for (cur = other; cur != NULL; cur = cur->next) {
+						if (cur->node == node_ptr) {
+							found = 1;
+							break;
+						}
+					}
+					if (!found) {
+						printk("security: conflicting type rules.");
+						goto err;
+					}
+				}
+			} else {
+				if (avtab_search(&p->te_cond_avtab, &key, AVTAB_TYPE)) {
+					printk("security: conflicting type rules when adding type rule for true.");
+					goto err;
+				}
+			}
+		}
+		node_ptr = avtab_insert_nonunique(&p->te_cond_avtab, &key, &datum);
+		if (!node_ptr) {
+			printk("security: could not insert rule.");
+			goto err;
+		}
+
+		list = kmalloc(sizeof(struct cond_av_list), GFP_KERNEL);
+		if (!list)
+			goto err;
+		memset(list, 0, sizeof(struct cond_av_list));
+
+		list->node = node_ptr;
+		if (i == 0)
+			*ret_list = list;
+		else
+			last->next = list;
+		last = list;
+
+	}
+
+	return 0;
+err:
+	cond_av_list_destroy(*ret_list);
+	*ret_list = NULL;
+	return -1;
+}
+
+static int expr_isvalid(struct policydb *p, struct cond_expr *expr)
+{
+	if (expr->expr_type <= 0 || expr->expr_type > COND_LAST) {
+		printk("security: conditional expressions uses unknown operator.\n");
+		return 0;
+	}
+
+	if (expr->bool > p->p_bools.nprim) {
+		printk("security: conditional expressions uses unknown bool.\n");
+		return 0;
+	}
+	return 1;
+}
+
+static int cond_read_node(struct policydb *p, struct cond_node *node, void *fp)
+{
+	__u32 *buf;
+	int len, i;
+	struct cond_expr *expr = NULL, *last = NULL;
+
+	buf = next_entry(fp, sizeof(__u32));
+	if (!buf)
+		return -1;
+
+	node->cur_state = le32_to_cpu(buf[0]);
+
+	len = 0;
+	buf = next_entry(fp, sizeof(__u32));
+	if (!buf)
+		return -1;
+
+	/* expr */
+	len = le32_to_cpu(buf[0]);
+
+	for (i = 0; i < len; i++ ) {
+		buf = next_entry(fp, sizeof(__u32) * 2);
+		if (!buf)
+			goto err;
+
+		expr = kmalloc(sizeof(struct cond_expr), GFP_KERNEL);
+		if (!expr) {
+			goto err;
+		}
+		memset(expr, 0, sizeof(struct cond_expr));
+
+		expr->expr_type = le32_to_cpu(buf[0]);
+		expr->bool = le32_to_cpu(buf[1]);
+
+		if (!expr_isvalid(p, expr))
+			goto err;
+
+		if (i == 0) {
+			node->expr = expr;
+		} else {
+			last->next = expr;
+		}
+		last = expr;
+	}
+
+	if (cond_read_av_list(p, fp, &node->true_list, NULL) != 0)
+		goto err;
+	if (cond_read_av_list(p, fp, &node->false_list, node->true_list) != 0)
+		goto err;
+	return 0;
+err:
+	cond_node_destroy(node);
+	return -1;
+}
+
+int cond_read_list(struct policydb *p, void *fp)
+{
+	struct cond_node *node, *last = NULL;
+	__u32 *buf;
+	int i, len;
+
+	buf = next_entry(fp, sizeof(__u32));
+	if (!buf)
+		return -1;
+
+	len = le32_to_cpu(buf[0]);
+
+	for (i = 0; i < len; i++) {
+		node = kmalloc(sizeof(struct cond_node), GFP_KERNEL);
+		if (!node)
+			goto err;
+		memset(node, 0, sizeof(struct cond_node));
+
+		if (cond_read_node(p, node, fp) != 0)
+			goto err;
+
+		if (i == 0) {
+			p->cond_list = node;
+		} else {
+			last->next = node;
+		}
+		last = node;
+	}
+	return 0;
+err:
+	cond_list_destroy(p->cond_list);
+	return -1;
+}
+
+/* Determine whether additional permissions are granted by the conditional
+ * av table, and if so, add them to the result
+ */
+void cond_compute_av(struct avtab *ctab, struct avtab_key *key, struct av_decision *avd)
+{
+	struct avtab_node *node;
+
+	if(!ctab || !key || !avd)
+		return;
+
+	for(node = avtab_search_node(ctab, key, AVTAB_AV); node != NULL;
+				node = avtab_search_node_next(node, AVTAB_AV)) {
+		if ( (__u32) (AVTAB_ALLOWED|AVTAB_ENABLED) ==
+		     (node->datum.specified & (AVTAB_ALLOWED|AVTAB_ENABLED)))
+			avd->allowed |= avtab_allowed(&node->datum);
+		if ( (__u32) (AVTAB_AUDITDENY|AVTAB_ENABLED) ==
+		     (node->datum.specified & (AVTAB_AUDITDENY|AVTAB_ENABLED)))
+			/* Since a '0' in an auditdeny mask represents a
+			 * permission we do NOT want to audit (dontaudit), we use
+			 * the '&' operand to ensure that all '0's in the mask
+			 * are retained (much unlike the allow and auditallow cases).
+			 */
+			avd->auditdeny &= avtab_auditdeny(&node->datum);
+		if ( (__u32) (AVTAB_AUDITALLOW|AVTAB_ENABLED) ==
+		     (node->datum.specified & (AVTAB_AUDITALLOW|AVTAB_ENABLED)))
+			avd->auditallow |= avtab_auditallow(&node->datum);
+	}
+	return;
+}

extra/linux-2.6.10/security/selinux/ss/conditional.h

@@ -0,0 +1,77 @@
+/* Authors: Karl MacMillan <kmacmillan@tresys.com>
+ *          Frank Mayer <mayerf@tresys.com>
+ *
+ * Copyright (C) 2003 - 2004 Tresys Technology, LLC
+ *	This program is free software; you can redistribute it and/or modify
+ *  	it under the terms of the GNU General Public License as published by
+ *	the Free Software Foundation, version 2.
+ */
+
+#ifndef _CONDITIONAL_H_
+#define _CONDITIONAL_H_
+
+#include "avtab.h"
+#include "symtab.h"
+#include "policydb.h"
+
+#define COND_EXPR_MAXDEPTH 10
+
+/*
+ * A conditional expression is a list of operators and operands
+ * in reverse polish notation.
+ */
+struct cond_expr {
+#define COND_BOOL	1 /* plain bool */
+#define COND_NOT	2 /* !bool */
+#define COND_OR		3 /* bool || bool */
+#define COND_AND	4 /* bool && bool */
+#define COND_XOR	5 /* bool ^ bool */
+#define COND_EQ		6 /* bool == bool */
+#define COND_NEQ	7 /* bool != bool */
+#define COND_LAST	8
+	__u32 expr_type;
+	__u32 bool;
+	struct cond_expr *next;
+};
+
+/*
+ * Each cond_node contains a list of rules to be enabled/disabled
+ * depending on the current value of the conditional expression. This
+ * struct is for that list.
+ */
+struct cond_av_list {
+	struct avtab_node *node;
+	struct cond_av_list *next;
+};
+
+/*
+ * A cond node represents a conditional block in a policy. It
+ * contains a conditional expression, the current state of the expression,
+ * two lists of rules to enable/disable depending on the value of the
+ * expression (the true list corresponds to if and the false list corresponds
+ * to else)..
+ */
+struct cond_node {
+	int cur_state;
+	struct cond_expr *expr;
+	struct cond_av_list *true_list;
+	struct cond_av_list *false_list;
+	struct cond_node *next;
+};
+
+int cond_policydb_init(struct policydb* p);
+void cond_policydb_destroy(struct policydb* p);
+
+int cond_init_bool_indexes(struct policydb* p);
+int cond_destroy_bool(void *key, void *datum, void *p);
+
+int cond_index_bool(void *key, void *datum, void *datap);
+
+int cond_read_bool(struct policydb *p, struct hashtab *h, void *fp);
+int cond_read_list(struct policydb *p, void *fp);
+
+void cond_compute_av(struct avtab *ctab, struct avtab_key *key, struct av_decision *avd);
+
+int evaluate_cond_node(struct policydb *p, struct cond_node *node);
+
+#endif /* _CONDITIONAL_H_ */

extra/linux-2.6.10/security/selinux/ss/constraint.h

@@ -0,0 +1,54 @@
+/*
+ * A constraint is a condition that must be satisfied in
+ * order for one or more permissions to be granted.
+ * Constraints are used to impose additional restrictions
+ * beyond the type-based rules in `te' or the role-based
+ * transition rules in `rbac'.  Constraints are typically
+ * used to prevent a process from transitioning to a new user
+ * identity or role unless it is in a privileged type.
+ * Constraints are likewise typically used to prevent a
+ * process from labeling an object with a different user
+ * identity.
+ *
+ * Author : Stephen Smalley, <sds@epoch.ncsc.mil>
+ */
+#ifndef _SS_CONSTRAINT_H_
+#define _SS_CONSTRAINT_H_
+
+#include "ebitmap.h"
+
+#define CEXPR_MAXDEPTH 5
+
+struct constraint_expr {
+#define CEXPR_NOT		1 /* not expr */
+#define CEXPR_AND		2 /* expr and expr */
+#define CEXPR_OR		3 /* expr or expr */
+#define CEXPR_ATTR		4 /* attr op attr */
+#define CEXPR_NAMES		5 /* attr op names */
+	u32 expr_type;		/* expression type */
+
+#define CEXPR_USER 1		/* user */
+#define CEXPR_ROLE 2		/* role */
+#define CEXPR_TYPE 4		/* type */
+#define CEXPR_TARGET 8		/* target if set, source otherwise */
+	u32 attr;		/* attribute */
+
+#define CEXPR_EQ     1		/* == or eq */
+#define CEXPR_NEQ    2		/* != */
+#define CEXPR_DOM    3		/* dom */
+#define CEXPR_DOMBY  4		/* domby  */
+#define CEXPR_INCOMP 5		/* incomp */
+	u32 op;			/* operator */
+
+	struct ebitmap names;	/* names */
+
+	struct constraint_expr *next;   /* next expression */
+};
+
+struct constraint_node {
+	u32 permissions;	/* constrained permissions */
+	struct constraint_expr *expr;	/* constraint on permissions */
+	struct constraint_node *next;	/* next constraint */
+};
+
+#endif	/* _SS_CONSTRAINT_H_ */

extra/linux-2.6.10/security/selinux/ss/context.h

@@ -0,0 +1,117 @@
+/*
+ * A security context is a set of security attributes
+ * associated with each subject and object controlled
+ * by the security policy.  Security contexts are
+  * externally represented as variable-length strings
+ * that can be interpreted by a user or application
+ * with an understanding of the security policy.
+ * Internally, the security server uses a simple
+ * structure.  This structure is private to the
+ * security server and can be changed without affecting
+ * clients of the security server.
+ *
+ * Author : Stephen Smalley, <sds@epoch.ncsc.mil>
+ */
+#ifndef _SS_CONTEXT_H_
+#define _SS_CONTEXT_H_
+
+#include "ebitmap.h"
+#include "mls_types.h"
+
+/*
+ * A security context consists of an authenticated user
+ * identity, a role, a type and a MLS range.
+ */
+struct context {
+	u32 user;
+	u32 role;
+	u32 type;
+#ifdef CONFIG_SECURITY_SELINUX_MLS
+	struct mls_range range;
+#endif
+};
+
+#ifdef CONFIG_SECURITY_SELINUX_MLS
+
+static inline void mls_context_init(struct context *c)
+{
+	memset(&c->range, 0, sizeof(c->range));
+}
+
+static inline int mls_context_cpy(struct context *dst, struct context *src)
+{
+	int rc;
+
+	dst->range.level[0].sens = src->range.level[0].sens;
+	rc = ebitmap_cpy(&dst->range.level[0].cat, &src->range.level[0].cat);
+	if (rc)
+		goto out;
+
+	dst->range.level[1].sens = src->range.level[1].sens;
+	rc = ebitmap_cpy(&dst->range.level[1].cat, &src->range.level[1].cat);
+	if (rc)
+		ebitmap_destroy(&dst->range.level[0].cat);
+out:
+	return rc;
+}
+
+static inline int mls_context_cmp(struct context *c1, struct context *c2)
+{
+	return ((c1->range.level[0].sens == c2->range.level[0].sens) &&
+		ebitmap_cmp(&c1->range.level[0].cat,&c2->range.level[0].cat) &&
+		(c1->range.level[1].sens == c2->range.level[1].sens) &&
+		ebitmap_cmp(&c1->range.level[1].cat,&c2->range.level[1].cat));
+}
+
+static inline void mls_context_destroy(struct context *c)
+{
+	ebitmap_destroy(&c->range.level[0].cat);
+	ebitmap_destroy(&c->range.level[1].cat);
+	mls_context_init(c);
+}
+
+#else
+
+static inline void mls_context_init(struct context *c)
+{ }
+
+static inline int mls_context_cpy(struct context *dst, struct context *src)
+{ return 0; }
+
+static inline int mls_context_cmp(struct context *c1, struct context *c2)
+{ return 1; }
+
+static inline void mls_context_destroy(struct context *c)
+{ }
+
+#endif
+
+static inline void context_init(struct context *c)
+{
+	memset(c, 0, sizeof(*c));
+}
+
+static inline int context_cpy(struct context *dst, struct context *src)
+{
+	dst->user = src->user;
+	dst->role = src->role;
+	dst->type = src->type;
+	return mls_context_cpy(dst, src);
+}
+
+static inline void context_destroy(struct context *c)
+{
+	c->user = c->role = c->type = 0;
+	mls_context_destroy(c);
+}
+
+static inline int context_cmp(struct context *c1, struct context *c2)
+{
+	return ((c1->user == c2->user) &&
+		(c1->role == c2->role) &&
+		(c1->type == c2->type) &&
+		mls_context_cmp(c1, c2));
+}
+
+#endif	/* _SS_CONTEXT_H_ */
+

extra/linux-2.6.10/security/selinux/ss/ebitmap.c

@@ -0,0 +1,335 @@
+/*
+ * Implementation of the extensible bitmap type.
+ *
+ * Author : Stephen Smalley, <sds@epoch.ncsc.mil>
+ */
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/errno.h>
+#include "ebitmap.h"
+#include "policydb.h"
+
+int ebitmap_or(struct ebitmap *dst, struct ebitmap *e1, struct ebitmap *e2)
+{
+	struct ebitmap_node *n1, *n2, *new, *prev;
+
+	ebitmap_init(dst);
+
+	n1 = e1->node;
+	n2 = e2->node;
+	prev = NULL;
+	while (n1 || n2) {
+		new = kmalloc(sizeof(*new), GFP_ATOMIC);
+		if (!new) {
+			ebitmap_destroy(dst);
+			return -ENOMEM;
+		}
+		memset(new, 0, sizeof(*new));
+		if (n1 && n2 && n1->startbit == n2->startbit) {
+			new->startbit = n1->startbit;
+			new->map = n1->map | n2->map;
+			n1 = n1->next;
+			n2 = n2->next;
+		} else if (!n2 || (n1 && n1->startbit < n2->startbit)) {
+			new->startbit = n1->startbit;
+			new->map = n1->map;
+			n1 = n1->next;
+		} else {
+			new->startbit = n2->startbit;
+			new->map = n2->map;
+			n2 = n2->next;
+		}
+
+		new->next = NULL;
+		if (prev)
+			prev->next = new;
+		else
+			dst->node = new;
+		prev = new;
+	}
+
+	dst->highbit = (e1->highbit > e2->highbit) ? e1->highbit : e2->highbit;
+	return 0;
+}
+
+int ebitmap_cmp(struct ebitmap *e1, struct ebitmap *e2)
+{
+	struct ebitmap_node *n1, *n2;
+
+	if (e1->highbit != e2->highbit)
+		return 0;
+
+	n1 = e1->node;
+	n2 = e2->node;
+	while (n1 && n2 &&
+	       (n1->startbit == n2->startbit) &&
+	       (n1->map == n2->map)) {
+		n1 = n1->next;
+		n2 = n2->next;
+	}
+
+	if (n1 || n2)
+		return 0;
+
+	return 1;
+}
+
+int ebitmap_cpy(struct ebitmap *dst, struct ebitmap *src)
+{
+	struct ebitmap_node *n, *new, *prev;
+
+	ebitmap_init(dst);
+	n = src->node;
+	prev = NULL;
+	while (n) {
+		new = kmalloc(sizeof(*new), GFP_ATOMIC);
+		if (!new) {
+			ebitmap_destroy(dst);
+			return -ENOMEM;
+		}
+		memset(new, 0, sizeof(*new));
+		new->startbit = n->startbit;
+		new->map = n->map;
+		new->next = NULL;
+		if (prev)
+			prev->next = new;
+		else
+			dst->node = new;
+		prev = new;
+		n = n->next;
+	}
+
+	dst->highbit = src->highbit;
+	return 0;
+}
+
+int ebitmap_contains(struct ebitmap *e1, struct ebitmap *e2)
+{
+	struct ebitmap_node *n1, *n2;
+
+	if (e1->highbit < e2->highbit)
+		return 0;
+
+	n1 = e1->node;
+	n2 = e2->node;
+	while (n1 && n2 && (n1->startbit <= n2->startbit)) {
+		if (n1->startbit < n2->startbit) {
+			n1 = n1->next;
+			continue;
+		}
+		if ((n1->map & n2->map) != n2->map)
+			return 0;
+
+		n1 = n1->next;
+		n2 = n2->next;
+	}
+
+	if (n2)
+		return 0;
+
+	return 1;
+}
+
+int ebitmap_get_bit(struct ebitmap *e, unsigned long bit)
+{
+	struct ebitmap_node *n;
+
+	if (e->highbit < bit)
+		return 0;
+
+	n = e->node;
+	while (n && (n->startbit <= bit)) {
+		if ((n->startbit + MAPSIZE) > bit) {
+			if (n->map & (MAPBIT << (bit - n->startbit)))
+				return 1;
+			else
+				return 0;
+		}
+		n = n->next;
+	}
+
+	return 0;
+}
+
+int ebitmap_set_bit(struct ebitmap *e, unsigned long bit, int value)
+{
+	struct ebitmap_node *n, *prev, *new;
+
+	prev = NULL;
+	n = e->node;
+	while (n && n->startbit <= bit) {
+		if ((n->startbit + MAPSIZE) > bit) {
+			if (value) {
+				n->map |= (MAPBIT << (bit - n->startbit));
+			} else {
+				n->map &= ~(MAPBIT << (bit - n->startbit));
+				if (!n->map) {
+					/* drop this node from the bitmap */
+
+					if (!n->next) {
+						/*
+						 * this was the highest map
+						 * within the bitmap
+						 */
+						if (prev)
+							e->highbit = prev->startbit + MAPSIZE;
+						else
+							e->highbit = 0;
+					}
+					if (prev)
+						prev->next = n->next;
+					else
+						e->node = n->next;
+
+					kfree(n);
+				}
+			}
+			return 0;
+		}
+		prev = n;
+		n = n->next;
+	}
+
+	if (!value)
+		return 0;
+
+	new = kmalloc(sizeof(*new), GFP_ATOMIC);
+	if (!new)
+		return -ENOMEM;
+	memset(new, 0, sizeof(*new));
+
+	new->startbit = bit & ~(MAPSIZE - 1);
+	new->map = (MAPBIT << (bit - new->startbit));
+
+	if (!n)
+		/* this node will be the highest map within the bitmap */
+		e->highbit = new->startbit + MAPSIZE;
+
+	if (prev) {
+		new->next = prev->next;
+		prev->next = new;
+	} else {
+		new->next = e->node;
+		e->node = new;
+	}
+
+	return 0;
+}
+
+void ebitmap_destroy(struct ebitmap *e)
+{
+	struct ebitmap_node *n, *temp;
+
+	if (!e)
+		return;
+
+	n = e->node;
+	while (n) {
+		temp = n;
+		n = n->next;
+		kfree(temp);
+	}
+
+	e->highbit = 0;
+	e->node = NULL;
+	return;
+}
+
+int ebitmap_read(struct ebitmap *e, void *fp)
+{
+	int rc = -EINVAL;
+	struct ebitmap_node *n, *l;
+	u32 *buf, mapsize, count, i;
+	u64 map;
+
+	ebitmap_init(e);
+
+	buf = next_entry(fp, sizeof(u32)*3);
+	if (!buf)
+		goto out;
+
+	mapsize = le32_to_cpu(buf[0]);
+	e->highbit = le32_to_cpu(buf[1]);
+	count = le32_to_cpu(buf[2]);
+
+	if (mapsize != MAPSIZE) {
+		printk(KERN_ERR "security: ebitmap: map size %u does not "
+		       "match my size %Zd (high bit was %d)\n", mapsize,
+		       MAPSIZE, e->highbit);
+		goto out;
+	}
+	if (!e->highbit) {
+		e->node = NULL;
+		goto ok;
+	}
+	if (e->highbit & (MAPSIZE - 1)) {
+		printk(KERN_ERR "security: ebitmap: high bit (%d) is not a "
+		       "multiple of the map size (%Zd)\n", e->highbit, MAPSIZE);
+		goto bad;
+	}
+	l = NULL;
+	for (i = 0; i < count; i++) {
+		buf = next_entry(fp, sizeof(u32));
+		if (!buf) {
+			printk(KERN_ERR "security: ebitmap: truncated map\n");
+			goto bad;
+		}
+		n = kmalloc(sizeof(*n), GFP_KERNEL);
+		if (!n) {
+			printk(KERN_ERR "security: ebitmap: out of memory\n");
+			rc = -ENOMEM;
+			goto bad;
+		}
+		memset(n, 0, sizeof(*n));
+
+		n->startbit = le32_to_cpu(buf[0]);
+
+		if (n->startbit & (MAPSIZE - 1)) {
+			printk(KERN_ERR "security: ebitmap start bit (%d) is "
+			       "not a multiple of the map size (%Zd)\n",
+			       n->startbit, MAPSIZE);
+			goto bad_free;
+		}
+		if (n->startbit > (e->highbit - MAPSIZE)) {
+			printk(KERN_ERR "security: ebitmap start bit (%d) is "
+			       "beyond the end of the bitmap (%Zd)\n",
+			       n->startbit, (e->highbit - MAPSIZE));
+			goto bad_free;
+		}
+		buf = next_entry(fp, sizeof(u64));
+		if (!buf) {
+			printk(KERN_ERR "security: ebitmap: truncated map\n");
+			goto bad_free;
+		}
+		memcpy(&map, buf, sizeof(u64));
+		n->map = le64_to_cpu(map);
+
+		if (!n->map) {
+			printk(KERN_ERR "security: ebitmap: null map in "
+			       "ebitmap (startbit %d)\n", n->startbit);
+			goto bad_free;
+		}
+		if (l) {
+			if (n->startbit <= l->startbit) {
+				printk(KERN_ERR "security: ebitmap: start "
+				       "bit %d comes after start bit %d\n",
+				       n->startbit, l->startbit);
+				goto bad_free;
+			}
+			l->next = n;
+		} else
+			e->node = n;
+
+		l = n;
+	}
+
+ok:
+	rc = 0;
+out:
+	return rc;
+bad_free:
+	kfree(n);
+bad:
+	ebitmap_destroy(e);
+	goto out;
+}

extra/linux-2.6.10/security/selinux/ss/ebitmap.h

@@ -0,0 +1,49 @@
+/*
+ * An extensible bitmap is a bitmap that supports an
+ * arbitrary number of bits.  Extensible bitmaps are
+ * used to represent sets of values, such as types,
+ * roles, categories, and classes.
+ *
+ * Each extensible bitmap is implemented as a linked
+ * list of bitmap nodes, where each bitmap node has
+ * an explicitly specified starting bit position within
+ * the total bitmap.
+ *
+ * Author : Stephen Smalley, <sds@epoch.ncsc.mil>
+ */
+#ifndef _SS_EBITMAP_H_
+#define _SS_EBITMAP_H_
+
+#define MAPTYPE u64			/* portion of bitmap in each node */
+#define MAPSIZE (sizeof(MAPTYPE) * 8)	/* number of bits in node bitmap */
+#define MAPBIT  1ULL			/* a bit in the node bitmap */
+
+struct ebitmap_node {
+	u32 startbit;		/* starting position in the total bitmap */
+	MAPTYPE map;		/* this node's portion of the bitmap */
+	struct ebitmap_node *next;
+};
+
+struct ebitmap {
+	struct ebitmap_node *node;	/* first node in the bitmap */
+	u32 highbit;	/* highest position in the total bitmap */
+};
+
+#define ebitmap_length(e) ((e)->highbit)
+#define ebitmap_startbit(e) ((e)->node ? (e)->node->startbit : 0)
+
+static inline void ebitmap_init(struct ebitmap *e)
+{
+	memset(e, 0, sizeof(*e));
+}
+
+int ebitmap_cmp(struct ebitmap *e1, struct ebitmap *e2);
+int ebitmap_or(struct ebitmap *dst, struct ebitmap *e1, struct ebitmap *e2);
+int ebitmap_cpy(struct ebitmap *dst, struct ebitmap *src);
+int ebitmap_contains(struct ebitmap *e1, struct ebitmap *e2);
+int ebitmap_get_bit(struct ebitmap *e, unsigned long bit);
+int ebitmap_set_bit(struct ebitmap *e, unsigned long bit, int value);
+void ebitmap_destroy(struct ebitmap *e);
+int ebitmap_read(struct ebitmap *e, void *fp);
+
+#endif	/* _SS_EBITMAP_H_ */

extra/linux-2.6.10/security/selinux/ss/hashtab.c

@@ -0,0 +1,280 @@
+/*
+ * Implementation of the hash table type.
+ *
+ * Author : Stephen Smalley, <sds@epoch.ncsc.mil>
+ */
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/errno.h>
+#include "hashtab.h"
+
+struct hashtab *hashtab_create(u32 (*hash_value)(struct hashtab *h, void *key),
+                               int (*keycmp)(struct hashtab *h, void *key1, void *key2),
+                               u32 size)
+{
+	struct hashtab *p;
+	u32 i;
+
+	p = kmalloc(sizeof(*p), GFP_KERNEL);
+	if (p == NULL)
+		return p;
+
+	memset(p, 0, sizeof(*p));
+	p->size = size;
+	p->nel = 0;
+	p->hash_value = hash_value;
+	p->keycmp = keycmp;
+	p->htable = kmalloc(sizeof(*(p->htable)) * size, GFP_KERNEL);
+	if (p->htable == NULL) {
+		kfree(p);
+		return NULL;
+	}
+
+	for (i = 0; i < size; i++)
+		p->htable[i] = NULL;
+
+	return p;
+}
+
+int hashtab_insert(struct hashtab *h, void *key, void *datum)
+{
+	u32 hvalue;
+	struct hashtab_node *prev, *cur, *newnode;
+
+	if (!h || h->nel == HASHTAB_MAX_NODES)
+		return -EINVAL;
+
+	hvalue = h->hash_value(h, key);
+	prev = NULL;
+	cur = h->htable[hvalue];
+	while (cur && h->keycmp(h, key, cur->key) > 0) {
+		prev = cur;
+		cur = cur->next;
+	}
+
+	if (cur && (h->keycmp(h, key, cur->key) == 0))
+		return -EEXIST;
+
+	newnode = kmalloc(sizeof(*newnode), GFP_KERNEL);
+	if (newnode == NULL)
+		return -ENOMEM;
+	memset(newnode, 0, sizeof(*newnode));
+	newnode->key = key;
+	newnode->datum = datum;
+	if (prev) {
+		newnode->next = prev->next;
+		prev->next = newnode;
+	} else {
+		newnode->next = h->htable[hvalue];
+		h->htable[hvalue] = newnode;
+	}
+
+	h->nel++;
+	return 0;
+}
+
+int hashtab_remove(struct hashtab *h, void *key,
+		   void (*destroy)(void *k, void *d, void *args),
+		   void *args)
+{
+	u32 hvalue;
+	struct hashtab_node *cur, *last;
+
+	if (!h)
+		return -EINVAL;
+
+	hvalue = h->hash_value(h, key);
+	last = NULL;
+	cur = h->htable[hvalue];
+	while (cur != NULL && h->keycmp(h, key, cur->key) > 0) {
+		last = cur;
+		cur = cur->next;
+	}
+
+	if (cur == NULL || (h->keycmp(h, key, cur->key) != 0))
+		return -ENOENT;
+
+	if (last == NULL)
+		h->htable[hvalue] = cur->next;
+	else
+		last->next = cur->next;
+
+	if (destroy)
+		destroy(cur->key, cur->datum, args);
+	kfree(cur);
+	h->nel--;
+	return 0;
+}
+
+int hashtab_replace(struct hashtab *h, void *key, void *datum,
+		    void (*destroy)(void *k, void *d, void *args),
+		    void *args)
+{
+	u32 hvalue;
+	struct hashtab_node *prev, *cur, *newnode;
+
+	if (!h)
+		return -EINVAL;
+
+	hvalue = h->hash_value(h, key);
+	prev = NULL;
+	cur = h->htable[hvalue];
+	while (cur != NULL && h->keycmp(h, key, cur->key) > 0) {
+		prev = cur;
+		cur = cur->next;
+	}
+
+	if (cur && (h->keycmp(h, key, cur->key) == 0)) {
+		if (destroy)
+			destroy(cur->key, cur->datum, args);
+		cur->key = key;
+		cur->datum = datum;
+	} else {
+		newnode = kmalloc(sizeof(*newnode), GFP_KERNEL);
+		if (newnode == NULL)
+			return -ENOMEM;
+		memset(newnode, 0, sizeof(*newnode));
+		newnode->key = key;
+		newnode->datum = datum;
+		if (prev) {
+			newnode->next = prev->next;
+			prev->next = newnode;
+		} else {
+			newnode->next = h->htable[hvalue];
+			h->htable[hvalue] = newnode;
+		}
+	}
+
+	return 0;
+}
+
+void *hashtab_search(struct hashtab *h, void *key)
+{
+	u32 hvalue;
+	struct hashtab_node *cur;
+
+	if (!h)
+		return NULL;
+
+	hvalue = h->hash_value(h, key);
+	cur = h->htable[hvalue];
+	while (cur != NULL && h->keycmp(h, key, cur->key) > 0)
+		cur = cur->next;
+
+	if (cur == NULL || (h->keycmp(h, key, cur->key) != 0))
+		return NULL;
+
+	return cur->datum;
+}
+
+void hashtab_destroy(struct hashtab *h)
+{
+	u32 i;
+	struct hashtab_node *cur, *temp;
+
+	if (!h)
+		return;
+
+	for (i = 0; i < h->size; i++) {
+		cur = h->htable[i];
+		while (cur != NULL) {
+			temp = cur;
+			cur = cur->next;
+			kfree(temp);
+		}
+		h->htable[i] = NULL;
+	}
+
+	kfree(h->htable);
+	h->htable = NULL;
+
+	kfree(h);
+}
+
+int hashtab_map(struct hashtab *h,
+		int (*apply)(void *k, void *d, void *args),
+		void *args)
+{
+	u32 i;
+	int ret;
+	struct hashtab_node *cur;
+
+	if (!h)
+		return 0;
+
+	for (i = 0; i < h->size; i++) {
+		cur = h->htable[i];
+		while (cur != NULL) {
+			ret = apply(cur->key, cur->datum, args);
+			if (ret)
+				return ret;
+			cur = cur->next;
+		}
+	}
+	return 0;
+}
+
+
+void hashtab_map_remove_on_error(struct hashtab *h,
+                                 int (*apply)(void *k, void *d, void *args),
+                                 void (*destroy)(void *k, void *d, void *args),
+                                 void *args)
+{
+	u32 i;
+	int ret;
+	struct hashtab_node *last, *cur, *temp;
+
+	if (!h)
+		return;
+
+	for (i = 0; i < h->size; i++) {
+		last = NULL;
+		cur = h->htable[i];
+		while (cur != NULL) {
+			ret = apply(cur->key, cur->datum, args);
+			if (ret) {
+				if (last)
+					last->next = cur->next;
+				else
+					h->htable[i] = cur->next;
+
+				temp = cur;
+				cur = cur->next;
+				if (destroy)
+					destroy(temp->key, temp->datum, args);
+				kfree(temp);
+				h->nel--;
+			} else {
+				last = cur;
+				cur = cur->next;
+			}
+		}
+	}
+	return;
+}
+
+void hashtab_stat(struct hashtab *h, struct hashtab_info *info)
+{
+	u32 i, chain_len, slots_used, max_chain_len;
+	struct hashtab_node *cur;
+
+	slots_used = 0;
+	max_chain_len = 0;
+	for (slots_used = max_chain_len = i = 0; i < h->size; i++) {
+		cur = h->htable[i];
+		if (cur) {
+			slots_used++;
+			chain_len = 0;
+			while (cur) {
+				chain_len++;
+				cur = cur->next;
+			}
+
+			if (chain_len > max_chain_len)
+				max_chain_len = chain_len;
+		}
+	}
+
+	info->slots_used = slots_used;
+	info->max_chain_len = max_chain_len;
+}

extra/linux-2.6.10/security/selinux/ss/hashtab.h

@@ -0,0 +1,125 @@
+/*
+ * A hash table (hashtab) maintains associations between
+ * key values and datum values.  The type of the key values
+ * and the type of the datum values is arbitrary.  The
+ * functions for hash computation and key comparison are
+ * provided by the creator of the table.
+ *
+ * Author : Stephen Smalley, <sds@epoch.ncsc.mil>
+ */
+#ifndef _SS_HASHTAB_H_
+#define _SS_HASHTAB_H_
+
+#define HASHTAB_MAX_NODES	0xffffffff
+
+struct hashtab_node {
+	void *key;
+	void *datum;
+	struct hashtab_node *next;
+};
+
+struct hashtab {
+	struct hashtab_node **htable;	/* hash table */
+	u32 size;			/* number of slots in hash table */
+	u32 nel;			/* number of elements in hash table */
+	u32 (*hash_value)(struct hashtab *h, void *key);
+					/* hash function */
+	int (*keycmp)(struct hashtab *h, void *key1, void *key2);
+					/* key comparison function */
+};
+
+struct hashtab_info {
+	u32 slots_used;
+	u32 max_chain_len;
+};
+
+/*
+ * Creates a new hash table with the specified characteristics.
+ *
+ * Returns NULL if insufficent space is available or
+ * the new hash table otherwise.
+ */
+struct hashtab *hashtab_create(u32 (*hash_value)(struct hashtab *h, void *key),
+                               int (*keycmp)(struct hashtab *h, void *key1, void *key2),
+                               u32 size);
+
+/*
+ * Inserts the specified (key, datum) pair into the specified hash table.
+ *
+ * Returns -ENOMEM on memory allocation error,
+ * -EEXIST if there is already an entry with the same key,
+ * -EINVAL for general errors or
+ * 0 otherwise.
+ */
+int hashtab_insert(struct hashtab *h, void *k, void *d);
+
+/*
+ * Removes the entry with the specified key from the hash table.
+ * Applies the specified destroy function to (key,datum,args) for
+ * the entry.
+ *
+ * Returns -ENOENT if no entry has the specified key,
+ * -EINVAL for general errors or
+ *0 otherwise.
+ */
+int hashtab_remove(struct hashtab *h, void *k,
+		   void (*destroy)(void *k, void *d, void *args),
+		   void *args);
+
+/*
+ * Insert or replace the specified (key, datum) pair in the specified
+ * hash table.  If an entry for the specified key already exists,
+ * then the specified destroy function is applied to (key,datum,args)
+ * for the entry prior to replacing the entry's contents.
+ *
+ * Returns -ENOMEM if insufficient space is available,
+ * -EINVAL for general errors or
+ * 0 otherwise.
+ */
+int hashtab_replace(struct hashtab *h, void *k, void *d,
+		    void (*destroy)(void *k, void *d, void *args),
+		    void *args);
+
+/*
+ * Searches for the entry with the specified key in the hash table.
+ *
+ * Returns NULL if no entry has the specified key or
+ * the datum of the entry otherwise.
+ */
+void *hashtab_search(struct hashtab *h, void *k);
+
+/*
+ * Destroys the specified hash table.
+ */
+void hashtab_destroy(struct hashtab *h);
+
+/*
+ * Applies the specified apply function to (key,datum,args)
+ * for each entry in the specified hash table.
+ *
+ * The order in which the function is applied to the entries
+ * is dependent upon the internal structure of the hash table.
+ *
+ * If apply returns a non-zero status, then hashtab_map will cease
+ * iterating through the hash table and will propagate the error
+ * return to its caller.
+ */
+int hashtab_map(struct hashtab *h,
+		int (*apply)(void *k, void *d, void *args),
+		void *args);
+
+/*
+ * Same as hashtab_map, except that if apply returns a non-zero status,
+ * then the (key,datum) pair will be removed from the hashtab and the
+ * destroy function will be applied to (key,datum,args).
+ */
+void hashtab_map_remove_on_error(struct hashtab *h,
+                                 int (*apply)(void *k, void *d, void *args),
+                                 void (*destroy)(void *k, void *d, void *args),
+                                 void *args);
+
+
+/* Fill info with some hash table statistics */
+void hashtab_stat(struct hashtab *h, struct hashtab_info *info);
+
+#endif	/* _SS_HASHTAB_H */

extra/linux-2.6.10/security/selinux/ss/mls.c

@@ -0,0 +1,754 @@
+/*
+ * Implementation of the multi-level security (MLS) policy.
+ *
+ * Author : Stephen Smalley, <sds@epoch.ncsc.mil>
+ */
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/errno.h>
+#include "mls.h"
+#include "policydb.h"
+#include "services.h"
+
+/*
+ * Remove any permissions from `allowed' that are
+ * denied by the MLS policy.
+ */
+void mls_compute_av(struct context *scontext,
+		    struct context *tcontext,
+		    struct class_datum *tclass,
+		    u32 *allowed)
+{
+	unsigned int rel[2];
+	int l;
+
+	for (l = 0; l < 2; l++)
+		rel[l] = mls_level_relation(scontext->range.level[l],
+					    tcontext->range.level[l]);
+
+	if (rel[1] != MLS_RELATION_EQ) {
+		if (rel[1] != MLS_RELATION_DOM &&
+		    !ebitmap_get_bit(&policydb.trustedreaders, scontext->type - 1) &&
+		    !ebitmap_get_bit(&policydb.trustedobjects, tcontext->type - 1)) {
+			/* read(s,t) = (s.high >= t.high) = False */
+			*allowed = (*allowed) & ~(tclass->mlsperms.read);
+		}
+		if (rel[1] != MLS_RELATION_DOMBY &&
+		    !ebitmap_get_bit(&policydb.trustedreaders, tcontext->type - 1) &&
+		    !ebitmap_get_bit(&policydb.trustedobjects, scontext->type - 1)) {
+			/* readby(s,t) = read(t,s) = False */
+			*allowed = (*allowed) & ~(tclass->mlsperms.readby);
+		}
+	}
+	if (((rel[0] != MLS_RELATION_DOMBY && rel[0] != MLS_RELATION_EQ) ||
+	    ((!mls_level_eq(tcontext->range.level[0],
+			    tcontext->range.level[1])) &&
+	     (rel[1] != MLS_RELATION_DOM && rel[1] != MLS_RELATION_EQ))) &&
+	    !ebitmap_get_bit(&policydb.trustedwriters, scontext->type - 1) &&
+	    !ebitmap_get_bit(&policydb.trustedobjects, tcontext->type - 1)) {
+		/*
+		 * write(s,t) = ((s.low <= t.low = t.high) or (s.low
+		 * <= t.low <= t.high <= s.high)) = False
+		 */
+		*allowed = (*allowed) & ~(tclass->mlsperms.write);
+	}
+
+	if (((rel[0] != MLS_RELATION_DOM && rel[0] != MLS_RELATION_EQ) ||
+	    ((!mls_level_eq(scontext->range.level[0],
+			    scontext->range.level[1])) &&
+	     (rel[1] != MLS_RELATION_DOMBY && rel[1] != MLS_RELATION_EQ))) &&
+	    !ebitmap_get_bit(&policydb.trustedwriters, tcontext->type - 1) &&
+	    !ebitmap_get_bit(&policydb.trustedobjects, scontext->type - 1)) {
+		/* writeby(s,t) = write(t,s) = False */
+		*allowed = (*allowed) & ~(tclass->mlsperms.writeby);
+	}
+}
+
+/*
+ * Return the length in bytes for the MLS fields of the
+ * security context string representation of `context'.
+ */
+int mls_compute_context_len(struct context * context)
+{
+	int i, l, len;
+
+
+	len = 0;
+	for (l = 0; l < 2; l++) {
+		len += strlen(policydb.p_sens_val_to_name[context->range.level[l].sens - 1]) + 1;
+
+		for (i = 1; i <= ebitmap_length(&context->range.level[l].cat); i++)
+			if (ebitmap_get_bit(&context->range.level[l].cat, i - 1))
+				len += strlen(policydb.p_cat_val_to_name[i - 1]) + 1;
+
+		if (mls_level_relation(context->range.level[0], context->range.level[1])
+				== MLS_RELATION_EQ)
+			break;
+	}
+
+	return len;
+}
+
+/*
+ * Write the security context string representation of
+ * the MLS fields of `context' into the string `*scontext'.
+ * Update `*scontext' to point to the end of the MLS fields.
+ */
+int mls_sid_to_context(struct context *context,
+		       char **scontext)
+{
+	char *scontextp;
+	int i, l;
+
+	scontextp = *scontext;
+
+	for (l = 0; l < 2; l++) {
+		strcpy(scontextp,
+		       policydb.p_sens_val_to_name[context->range.level[l].sens - 1]);
+		scontextp += strlen(policydb.p_sens_val_to_name[context->range.level[l].sens - 1]);
+		*scontextp = ':';
+		scontextp++;
+		for (i = 1; i <= ebitmap_length(&context->range.level[l].cat); i++)
+			if (ebitmap_get_bit(&context->range.level[l].cat, i - 1)) {
+				strcpy(scontextp, policydb.p_cat_val_to_name[i - 1]);
+				scontextp += strlen(policydb.p_cat_val_to_name[i - 1]);
+				*scontextp = ',';
+				scontextp++;
+			}
+		if (mls_level_relation(context->range.level[0], context->range.level[1])
+				!= MLS_RELATION_EQ) {
+			scontextp--;
+			sprintf(scontextp, "-");
+			scontextp++;
+
+		} else {
+			break;
+		}
+	}
+
+	*scontext = scontextp;
+	return 0;
+}
+
+/*
+ * Return 1 if the MLS fields in the security context
+ * structure `c' are valid.  Return 0 otherwise.
+ */
+int mls_context_isvalid(struct policydb *p, struct context *c)
+{
+	unsigned int relation;
+	struct level_datum *levdatum;
+	struct user_datum *usrdatum;
+	struct mls_range_list *rnode;
+	int i, l;
+
+	/*
+	 * MLS range validity checks: high must dominate low, low level must
+	 * be valid (category set <-> sensitivity check), and high level must
+	 * be valid (category set <-> sensitivity check)
+	 */
+	relation = mls_level_relation(c->range.level[1],
+				      c->range.level[0]);
+	if (!(relation & (MLS_RELATION_DOM | MLS_RELATION_EQ)))
+		/* High does not dominate low. */
+		return 0;
+
+	for (l = 0; l < 2; l++) {
+		if (!c->range.level[l].sens || c->range.level[l].sens > p->p_levels.nprim)
+			return 0;
+		levdatum = hashtab_search(p->p_levels.table,
+			p->p_sens_val_to_name[c->range.level[l].sens - 1]);
+		if (!levdatum)
+			return 0;
+
+		for (i = 1; i <= ebitmap_length(&c->range.level[l].cat); i++) {
+			if (ebitmap_get_bit(&c->range.level[l].cat, i - 1)) {
+				if (i > p->p_cats.nprim)
+					return 0;
+				if (!ebitmap_get_bit(&levdatum->level->cat, i - 1))
+					/*
+					 * Category may not be associated with
+					 * sensitivity in low level.
+					 */
+					return 0;
+			}
+		}
+	}
+
+	if (c->role == OBJECT_R_VAL)
+		return 1;
+
+	/*
+	 * User must be authorized for the MLS range.
+	 */
+	if (!c->user || c->user > p->p_users.nprim)
+		return 0;
+	usrdatum = p->user_val_to_struct[c->user - 1];
+	for (rnode = usrdatum->ranges; rnode; rnode = rnode->next) {
+		if (mls_range_contains(rnode->range, c->range))
+			break;
+	}
+	if (!rnode)
+		/* user may not be associated with range */
+		return 0;
+
+	return 1;
+}
+
+
+/*
+ * Set the MLS fields in the security context structure
+ * `context' based on the string representation in
+ * the string `*scontext'.  Update `*scontext' to
+ * point to the end of the string representation of
+ * the MLS fields.
+ *
+ * This function modifies the string in place, inserting
+ * NULL characters to terminate the MLS fields.
+ */
+int mls_context_to_sid(char oldc,
+		       char **scontext,
+		       struct context *context)
+{
+
+	char delim;
+	char *scontextp, *p;
+	struct level_datum *levdatum;
+	struct cat_datum *catdatum;
+	int l, rc = -EINVAL;
+
+	if (!oldc) {
+		/* No MLS component to the security context.  Try
+		   to use a default 'unclassified' value. */
+		levdatum = hashtab_search(policydb.p_levels.table,
+		                          "unclassified");
+		if (!levdatum)
+			goto out;
+		context->range.level[0].sens = levdatum->level->sens;
+		context->range.level[1].sens = context->range.level[0].sens;
+		rc = 0;
+		goto out;
+	}
+
+	/* Extract low sensitivity. */
+	scontextp = p = *scontext;
+	while (*p && *p != ':' && *p != '-')
+		p++;
+
+	delim = *p;
+	if (delim != 0)
+		*p++ = 0;
+
+	for (l = 0; l < 2; l++) {
+		levdatum = hashtab_search(policydb.p_levels.table, scontextp);
+		if (!levdatum)
+			goto out;
+
+		context->range.level[l].sens = levdatum->level->sens;
+
+		if (delim == ':') {
+			/* Extract low category set. */
+			while (1) {
+				scontextp = p;
+				while (*p && *p != ',' && *p != '-')
+					p++;
+				delim = *p;
+				if (delim != 0)
+					*p++ = 0;
+
+				catdatum = hashtab_search(policydb.p_cats.table,
+				                          scontextp);
+				if (!catdatum)
+					goto out;
+
+				rc = ebitmap_set_bit(&context->range.level[l].cat,
+				                     catdatum->value - 1, 1);
+				if (rc)
+					goto out;
+				if (delim != ',')
+					break;
+			}
+		}
+		if (delim == '-') {
+			/* Extract high sensitivity. */
+			scontextp = p;
+			while (*p && *p != ':')
+				p++;
+
+			delim = *p;
+			if (delim != 0)
+				*p++ = 0;
+		} else
+			break;
+	}
+
+	if (l == 0) {
+		context->range.level[1].sens = context->range.level[0].sens;
+		rc = ebitmap_cpy(&context->range.level[1].cat,
+				 &context->range.level[0].cat);
+		if (rc)
+			goto out;
+	}
+	*scontext = ++p;
+	rc = 0;
+out:
+	return rc;
+}
+
+/*
+ * Copies the MLS range from `src' into `dst'.
+ */
+static inline int mls_copy_context(struct context *dst,
+				   struct context *src)
+{
+	int l, rc = 0;
+
+	/* Copy the MLS range from the source context */
+	for (l = 0; l < 2; l++) {
+
+		dst->range.level[l].sens = src->range.level[l].sens;
+		rc = ebitmap_cpy(&dst->range.level[l].cat,
+				 &src->range.level[l].cat);
+		if (rc)
+			break;
+	}
+
+	return rc;
+}
+
+/*
+ * Convert the MLS fields in the security context
+ * structure `c' from the values specified in the
+ * policy `oldp' to the values specified in the policy `newp'.
+ */
+int mls_convert_context(struct policydb *oldp,
+			struct policydb *newp,
+			struct context *c)
+{
+	struct level_datum *levdatum;
+	struct cat_datum *catdatum;
+	struct ebitmap bitmap;
+	int l, i;
+
+	for (l = 0; l < 2; l++) {
+		levdatum = hashtab_search(newp->p_levels.table,
+			oldp->p_sens_val_to_name[c->range.level[l].sens - 1]);
+
+		if (!levdatum)
+			return -EINVAL;
+		c->range.level[l].sens = levdatum->level->sens;
+
+		ebitmap_init(&bitmap);
+		for (i = 1; i <= ebitmap_length(&c->range.level[l].cat); i++) {
+			if (ebitmap_get_bit(&c->range.level[l].cat, i - 1)) {
+				int rc;
+
+				catdatum = hashtab_search(newp->p_cats.table,
+				         	oldp->p_cat_val_to_name[i - 1]);
+				if (!catdatum)
+					return -EINVAL;
+				rc = ebitmap_set_bit(&bitmap, catdatum->value - 1, 1);
+				if (rc)
+					return rc;
+			}
+		}
+		ebitmap_destroy(&c->range.level[l].cat);
+		c->range.level[l].cat = bitmap;
+	}
+
+	return 0;
+}
+
+int mls_compute_sid(struct context *scontext,
+		    struct context *tcontext,
+		    u16 tclass,
+		    u32 specified,
+		    struct context *newcontext)
+{
+	switch (specified) {
+	case AVTAB_TRANSITION:
+	case AVTAB_CHANGE:
+		/* Use the process MLS attributes. */
+		return mls_copy_context(newcontext, scontext);
+	case AVTAB_MEMBER:
+		/* Only polyinstantiate the MLS attributes if
+		   the type is being polyinstantiated */
+		if (newcontext->type != tcontext->type) {
+			/* Use the process MLS attributes. */
+			return mls_copy_context(newcontext, scontext);
+		} else {
+			/* Use the related object MLS attributes. */
+			return mls_copy_context(newcontext, tcontext);
+		}
+	default:
+		return -EINVAL;
+	}
+	return -EINVAL;
+}
+
+void mls_user_destroy(struct user_datum *usrdatum)
+{
+	struct mls_range_list *rnode, *rtmp;
+	rnode = usrdatum->ranges;
+	while (rnode) {
+		rtmp = rnode;
+		rnode = rnode->next;
+		ebitmap_destroy(&rtmp->range.level[0].cat);
+		ebitmap_destroy(&rtmp->range.level[1].cat);
+		kfree(rtmp);
+	}
+}
+
+int mls_read_perm(struct perm_datum *perdatum, void *fp)
+{
+	u32 *buf;
+
+	buf = next_entry(fp, sizeof(u32));
+	if (!buf)
+		return -EINVAL;
+	perdatum->base_perms = le32_to_cpu(buf[0]);
+	return 0;
+}
+
+/*
+ * Read a MLS level structure from a policydb binary
+ * representation file.
+ */
+struct mls_level *mls_read_level(void *fp)
+{
+	struct mls_level *l;
+	u32 *buf;
+
+	l = kmalloc(sizeof(*l), GFP_ATOMIC);
+	if (!l) {
+		printk(KERN_ERR "security: mls: out of memory\n");
+		return NULL;
+	}
+	memset(l, 0, sizeof(*l));
+
+	buf = next_entry(fp, sizeof(u32));
+	if (!buf) {
+		printk(KERN_ERR "security: mls: truncated level\n");
+		goto bad;
+	}
+	l->sens = cpu_to_le32(buf[0]);
+
+	if (ebitmap_read(&l->cat, fp)) {
+		printk(KERN_ERR "security: mls:  error reading level "
+		       "categories\n");
+		goto bad;
+	}
+	return l;
+
+bad:
+	kfree(l);
+	return NULL;
+}
+
+
+/*
+ * Read a MLS range structure from a policydb binary
+ * representation file.
+ */
+static int mls_read_range_helper(struct mls_range *r, void *fp)
+{
+	u32 *buf;
+	int items, rc = -EINVAL;
+
+	buf = next_entry(fp, sizeof(u32));
+	if (!buf)
+		goto out;
+
+	items = le32_to_cpu(buf[0]);
+	buf = next_entry(fp, sizeof(u32) * items);
+	if (!buf) {
+		printk(KERN_ERR "security: mls:  truncated range\n");
+		goto out;
+	}
+	r->level[0].sens = le32_to_cpu(buf[0]);
+	if (items > 1) {
+		r->level[1].sens = le32_to_cpu(buf[1]);
+	} else {
+		r->level[1].sens = r->level[0].sens;
+	}
+
+	rc = ebitmap_read(&r->level[0].cat, fp);
+	if (rc) {
+		printk(KERN_ERR "security: mls:  error reading low "
+		       "categories\n");
+		goto out;
+	}
+	if (items > 1) {
+		rc = ebitmap_read(&r->level[1].cat, fp);
+		if (rc) {
+			printk(KERN_ERR "security: mls:  error reading high "
+			       "categories\n");
+			goto bad_high;
+		}
+	} else {
+		rc = ebitmap_cpy(&r->level[1].cat, &r->level[0].cat);
+		if (rc) {
+			printk(KERN_ERR "security: mls:  out of memory\n");
+			goto bad_high;
+		}
+	}
+
+	rc = 0;
+out:
+	return rc;
+bad_high:
+	ebitmap_destroy(&r->level[0].cat);
+	goto out;
+}
+
+int mls_read_range(struct context *c, void *fp)
+{
+	return mls_read_range_helper(&c->range, fp);
+}
+
+
+/*
+ * Read a MLS perms structure from a policydb binary
+ * representation file.
+ */
+int mls_read_class(struct class_datum *cladatum, void *fp)
+{
+	struct mls_perms *p = &cladatum->mlsperms;
+	u32 *buf;
+
+	buf = next_entry(fp, sizeof(u32)*4);
+	if (!buf) {
+		printk(KERN_ERR "security: mls:  truncated mls permissions\n");
+		return -EINVAL;
+	}
+	p->read = le32_to_cpu(buf[0]);
+	p->readby = le32_to_cpu(buf[1]);
+	p->write = le32_to_cpu(buf[2]);
+	p->writeby = le32_to_cpu(buf[3]);
+	return 0;
+}
+
+int mls_read_user(struct user_datum *usrdatum, void *fp)
+{
+	struct mls_range_list *r, *l;
+	int rc = 0;
+	u32 nel, i;
+	u32 *buf;
+
+	buf = next_entry(fp, sizeof(u32));
+	if (!buf) {
+		rc = -EINVAL;
+		goto out;
+	}
+	nel = le32_to_cpu(buf[0]);
+	l = NULL;
+	for (i = 0; i < nel; i++) {
+		r = kmalloc(sizeof(*r), GFP_ATOMIC);
+		if (!r) {
+			rc = -ENOMEM;
+			goto out;
+		}
+		memset(r, 0, sizeof(*r));
+
+		rc = mls_read_range_helper(&r->range, fp);
+		if (rc) {
+			kfree(r);
+			goto out;
+		}
+
+		if (l)
+			l->next = r;
+		else
+			usrdatum->ranges = r;
+		l = r;
+	}
+out:
+	return rc;
+}
+
+int mls_read_nlevels(struct policydb *p, void *fp)
+{
+	u32 *buf;
+
+	buf = next_entry(fp, sizeof(u32));
+	if (!buf)
+		return -EINVAL;
+	p->nlevels = le32_to_cpu(buf[0]);
+	return 0;
+}
+
+int mls_read_trusted(struct policydb *p, void *fp)
+{
+	int rc = 0;
+
+	rc = ebitmap_read(&p->trustedreaders, fp);
+	if (rc)
+		goto out;
+	rc = ebitmap_read(&p->trustedwriters, fp);
+	if (rc)
+		goto bad;
+	rc = ebitmap_read(&p->trustedobjects, fp);
+	if (rc)
+		goto bad2;
+out:
+	return rc;
+bad2:
+	ebitmap_destroy(&p->trustedwriters);
+bad:
+	ebitmap_destroy(&p->trustedreaders);
+	goto out;
+}
+
+int sens_index(void *key, void *datum, void *datap)
+{
+	struct policydb *p;
+	struct level_datum *levdatum;
+
+
+	levdatum = datum;
+	p = datap;
+
+	if (!levdatum->isalias)
+		p->p_sens_val_to_name[levdatum->level->sens - 1] = key;
+
+	return 0;
+}
+
+int cat_index(void *key, void *datum, void *datap)
+{
+	struct policydb *p;
+	struct cat_datum *catdatum;
+
+
+	catdatum = datum;
+	p = datap;
+
+
+	if (!catdatum->isalias)
+		p->p_cat_val_to_name[catdatum->value - 1] = key;
+
+	return 0;
+}
+
+int sens_destroy(void *key, void *datum, void *p)
+{
+	struct level_datum *levdatum;
+
+	kfree(key);
+	levdatum = datum;
+	if (!levdatum->isalias) {
+		ebitmap_destroy(&levdatum->level->cat);
+		kfree(levdatum->level);
+	}
+	kfree(datum);
+	return 0;
+}
+
+int cat_destroy(void *key, void *datum, void *p)
+{
+	kfree(key);
+	kfree(datum);
+	return 0;
+}
+
+int sens_read(struct policydb *p, struct hashtab *h, void *fp)
+{
+	char *key = NULL;
+	struct level_datum *levdatum;
+	int rc;
+	u32 *buf, len;
+
+	levdatum = kmalloc(sizeof(*levdatum), GFP_ATOMIC);
+	if (!levdatum) {
+		rc = -ENOMEM;
+		goto out;
+	}
+	memset(levdatum, 0, sizeof(*levdatum));
+
+	buf = next_entry(fp, sizeof(u32)*2);
+	if (!buf) {
+		rc = -EINVAL;
+		goto bad;
+	}
+
+	len = le32_to_cpu(buf[0]);
+	levdatum->isalias = le32_to_cpu(buf[1]);
+
+	buf = next_entry(fp, len);
+	if (!buf) {
+		rc = -EINVAL;
+		goto bad;
+	}
+	key = kmalloc(len + 1,GFP_ATOMIC);
+	if (!key) {
+		rc = -ENOMEM;
+		goto bad;
+	}
+	memcpy(key, buf, len);
+	key[len] = 0;
+
+	levdatum->level = mls_read_level(fp);
+	if (!levdatum->level) {
+		rc = -EINVAL;
+		goto bad;
+	}
+
+	rc = hashtab_insert(h, key, levdatum);
+	if (rc)
+		goto bad;
+out:
+	return rc;
+bad:
+	sens_destroy(key, levdatum, NULL);
+	goto out;
+}
+
+
+int cat_read(struct policydb *p, struct hashtab *h, void *fp)
+{
+	char *key = NULL;
+	struct cat_datum *catdatum;
+	int rc;
+	u32 *buf, len;
+
+	catdatum = kmalloc(sizeof(*catdatum), GFP_ATOMIC);
+	if (!catdatum) {
+		rc = -ENOMEM;
+		goto out;
+	}
+	memset(catdatum, 0, sizeof(*catdatum));
+
+	buf = next_entry(fp, sizeof(u32)*3);
+	if (!buf) {
+		rc = -EINVAL;
+		goto bad;
+	}
+
+	len = le32_to_cpu(buf[0]);
+	catdatum->value = le32_to_cpu(buf[1]);
+	catdatum->isalias = le32_to_cpu(buf[2]);
+
+	buf = next_entry(fp, len);
+	if (!buf) {
+		rc = -EINVAL;
+		goto bad;
+	}
+	key = kmalloc(len + 1,GFP_ATOMIC);
+	if (!key) {
+		rc = -ENOMEM;
+		goto bad;
+	}
+	memcpy(key, buf, len);
+	key[len] = 0;
+
+	rc = hashtab_insert(h, key, catdatum);
+	if (rc)
+		goto bad;
+out:
+	return rc;
+
+bad:
+	cat_destroy(key, catdatum, NULL);
+	goto out;
+}

extra/linux-2.6.10/security/selinux/ss/mls.h

@@ -0,0 +1,99 @@
+/*
+ * Multi-level security (MLS) policy operations.
+ *
+ * Author : Stephen Smalley, <sds@epoch.ncsc.mil>
+ */
+#ifndef _SS_MLS_H_
+#define _SS_MLS_H_
+
+#include "context.h"
+#include "policydb.h"
+
+#ifdef CONFIG_SECURITY_SELINUX_MLS
+
+void mls_compute_av(struct context *scontext,
+		    struct context *tcontext,
+		    struct class_datum *tclass,
+		    u32 *allowed);
+
+int mls_compute_context_len(struct context *context);
+int mls_sid_to_context(struct context *context, char **scontext);
+int mls_context_isvalid(struct policydb *p, struct context *c);
+
+int mls_context_to_sid(char oldc,
+	               char **scontext,
+		       struct context *context);
+
+int mls_convert_context(struct policydb *oldp,
+			struct policydb *newp,
+			struct context *context);
+
+int mls_compute_sid(struct context *scontext,
+		    struct context *tcontext,
+		    u16 tclass,
+		    u32 specified,
+		    struct context *newcontext);
+
+int sens_index(void *key, void *datum, void *datap);
+int cat_index(void *key, void *datum, void *datap);
+int sens_destroy(void *key, void *datum, void *p);
+int cat_destroy(void *key, void *datum, void *p);
+int sens_read(struct policydb *p, struct hashtab *h, void *fp);
+int cat_read(struct policydb *p, struct hashtab *h, void *fp);
+
+#define mls_for_user_ranges(user, usercon) { \
+struct mls_range_list *__ranges; \
+for (__ranges = user->ranges; __ranges; __ranges = __ranges->next) { \
+usercon.range = __ranges->range;
+
+#define mls_end_user_ranges } }
+
+#define mls_symtab_names  "levels", "categories",
+#define mls_symtab_sizes  16, 16,
+#define mls_index_f sens_index, cat_index,
+#define mls_destroy_f sens_destroy, cat_destroy,
+#define mls_read_f sens_read, cat_read,
+#define mls_write_f sens_write, cat_write,
+#define mls_policydb_index_others(p) printk(", %d levels", p->nlevels);
+
+#define mls_set_config(config) config |= POLICYDB_CONFIG_MLS
+
+void mls_user_destroy(struct user_datum *usrdatum);
+int mls_read_range(struct context *c, void *fp);
+int mls_read_perm(struct perm_datum *perdatum, void *fp);
+int mls_read_class(struct class_datum *cladatum,  void *fp);
+int mls_read_user(struct user_datum *usrdatum, void *fp);
+int mls_read_nlevels(struct policydb *p, void *fp);
+int mls_read_trusted(struct policydb *p, void *fp);
+
+#else
+
+#define	mls_compute_av(scontext, tcontext, tclass_datum, allowed)
+#define mls_compute_context_len(context) 0
+#define	mls_sid_to_context(context, scontextpp)
+#define mls_context_isvalid(p, c) 1
+#define	mls_context_to_sid(oldc, context_str, context) 0
+#define mls_convert_context(oldp, newp, c) 0
+#define mls_compute_sid(scontext, tcontext, tclass, specified, newcontextp) 0
+#define mls_for_user_ranges(user, usercon)
+#define mls_end_user_ranges
+#define mls_symtab_names
+#define mls_symtab_sizes
+#define mls_index_f
+#define mls_destroy_f
+#define mls_read_f
+#define mls_write_f
+#define mls_policydb_index_others(p)
+#define mls_set_config(config)
+#define mls_user_destroy(usrdatum)
+#define mls_read_range(c, fp) 0
+#define mls_read_perm(p, fp) 0
+#define mls_read_class(c, fp) 0
+#define mls_read_user(u, fp) 0
+#define mls_read_nlevels(p, fp) 0
+#define mls_read_trusted(p, fp) 0
+
+#endif
+
+#endif	/* _SS_MLS_H */
+

extra/linux-2.6.10/security/selinux/ss/mls_types.h

@@ -0,0 +1,58 @@
+/*
+ * Type definitions for the multi-level security (MLS) policy.
+ *
+ * Author : Stephen Smalley, <sds@epoch.ncsc.mil>
+ */
+#ifndef _SS_MLS_TYPES_H_
+#define _SS_MLS_TYPES_H_
+
+struct mls_level {
+	u32 sens;		/* sensitivity */
+	struct ebitmap cat;	/* category set */
+};
+
+struct mls_range {
+	struct mls_level level[2]; /* low == level[0], high == level[1] */
+};
+
+struct mls_range_list {
+	struct mls_range range;
+	struct mls_range_list *next;
+};
+
+#define MLS_RELATION_DOM	1 /* source dominates */
+#define MLS_RELATION_DOMBY	2 /* target dominates */
+#define MLS_RELATION_EQ		4 /* source and target are equivalent */
+#define MLS_RELATION_INCOMP	8 /* source and target are incomparable */
+
+#define mls_level_eq(l1,l2) \
+(((l1).sens == (l2).sens) && ebitmap_cmp(&(l1).cat,&(l2).cat))
+
+#define mls_level_relation(l1,l2) ( \
+(((l1).sens == (l2).sens) && ebitmap_cmp(&(l1).cat,&(l2).cat)) ? \
+				    MLS_RELATION_EQ : \
+(((l1).sens >= (l2).sens) && ebitmap_contains(&(l1).cat, &(l2).cat)) ? \
+				    MLS_RELATION_DOM : \
+(((l2).sens >= (l1).sens) && ebitmap_contains(&(l2).cat, &(l1).cat)) ? \
+				    MLS_RELATION_DOMBY : \
+				    MLS_RELATION_INCOMP )
+
+#define mls_range_contains(r1,r2) \
+((mls_level_relation((r1).level[0], (r2).level[0]) & \
+	  (MLS_RELATION_EQ | MLS_RELATION_DOMBY)) && \
+	 (mls_level_relation((r1).level[1], (r2).level[1]) & \
+	  (MLS_RELATION_EQ | MLS_RELATION_DOM)))
+
+/*
+ * Every access vector permission is mapped to a set of MLS base
+ * permissions, based on the flow properties of the corresponding
+ * operation.
+ */
+struct mls_perms {
+	u32 read;     /* permissions that map to `read' */
+	u32 readby;   /* permissions that map to `readby' */
+	u32 write;    /* permissions that map to `write' */
+	u32 writeby;  /* permissions that map to `writeby' */
+};
+
+#endif	/* _SS_MLS_TYPES_H_ */

extra/linux-2.6.10/security/selinux/ss/policydb.h

@@ -0,0 +1,288 @@
+/*
+ * A policy database (policydb) specifies the
+ * configuration data for the security policy.
+ *
+ * Author : Stephen Smalley, <sds@epoch.ncsc.mil>
+ */
+
+/* Updated: Frank Mayer <mayerf@tresys.com> and Karl MacMillan <kmacmillan@tresys.com>
+ *
+ * 	Added conditional policy language extensions
+ *
+ * Copyright (C) 2003 - 2004 Tresys Technology, LLC
+ *	This program is free software; you can redistribute it and/or modify
+ *  	it under the terms of the GNU General Public License as published by
+ *	the Free Software Foundation, version 2.
+ */
+
+#ifndef _SS_POLICYDB_H_
+#define _SS_POLICYDB_H_
+
+#include "symtab.h"
+#include "avtab.h"
+#include "sidtab.h"
+#include "context.h"
+#include "constraint.h"
+
+/*
+ * A datum type is defined for each kind of symbol
+ * in the configuration data:  individual permissions,
+ * common prefixes for access vectors, classes,
+ * users, roles, types, sensitivities, categories, etc.
+ */
+
+/* Permission attributes */
+struct perm_datum {
+	u32 value;		/* permission bit + 1 */
+#ifdef CONFIG_SECURITY_SELINUX_MLS
+#define MLS_BASE_READ    1	/* MLS base permission `read' */
+#define MLS_BASE_WRITE   2	/* MLS base permission `write' */
+#define MLS_BASE_READBY  4	/* MLS base permission `readby' */
+#define MLS_BASE_WRITEBY 8	/* MLS base permission `writeby' */
+	u32 base_perms;		/* MLS base permission mask */
+#endif
+};
+
+/* Attributes of a common prefix for access vectors */
+struct common_datum {
+	u32 value;			/* internal common value */
+	struct symtab permissions;	/* common permissions */
+};
+
+/* Class attributes */
+struct class_datum {
+	u32 value;			/* class value */
+	char *comkey;			/* common name */
+	struct common_datum *comdatum;	/* common datum */
+	struct symtab permissions;	/* class-specific permission symbol table */
+	struct constraint_node *constraints;	/* constraints on class permissions */
+#ifdef CONFIG_SECURITY_SELINUX_MLS
+	struct mls_perms mlsperms;	/* MLS base permission masks */
+#endif
+};
+
+/* Role attributes */
+struct role_datum {
+	u32 value;			/* internal role value */
+	struct ebitmap dominates;	/* set of roles dominated by this role */
+	struct ebitmap types;		/* set of authorized types for role */
+};
+
+struct role_trans {
+	u32 role;		/* current role */
+	u32 type;		/* program executable type */
+	u32 new_role;		/* new role */
+	struct role_trans *next;
+};
+
+struct role_allow {
+	u32 role;		/* current role */
+	u32 new_role;		/* new role */
+	struct role_allow *next;
+};
+
+/* Type attributes */
+struct type_datum {
+	u32 value;		/* internal type value */
+	unsigned char primary;	/* primary name? */
+};
+
+/* User attributes */
+struct user_datum {
+	u32 value;			/* internal user value */
+	struct ebitmap roles;		/* set of authorized roles for user */
+#ifdef CONFIG_SECURITY_SELINUX_MLS
+	struct mls_range_list *ranges;	/* list of authorized MLS ranges for user */
+#endif
+};
+
+
+#ifdef CONFIG_SECURITY_SELINUX_MLS
+/* Sensitivity attributes */
+struct level_datum {
+	struct mls_level *level;	/* sensitivity and associated categories */
+	unsigned char isalias;	/* is this sensitivity an alias for another? */
+};
+
+/* Category attributes */
+struct cat_datum {
+	u32 value;		/* internal category bit + 1 */
+	unsigned char isalias;  /* is this category an alias for another? */
+};
+#endif
+
+/* Boolean data type */
+struct cond_bool_datum {
+	__u32 value;		/* internal type value */
+	int state;
+};
+
+struct cond_node;
+
+/*
+ * The configuration data includes security contexts for
+ * initial SIDs, unlabeled file systems, TCP and UDP port numbers,
+ * network interfaces, and nodes.  This structure stores the
+ * relevant data for one such entry.  Entries of the same kind
+ * (e.g. all initial SIDs) are linked together into a list.
+ */
+struct ocontext {
+	union {
+		char *name;	/* name of initial SID, fs, netif, fstype, path */
+		struct {
+			u8 protocol;
+			u16 low_port;
+			u16 high_port;
+		} port;		/* TCP or UDP port information */
+		struct {
+			u32 addr;
+			u32 mask;
+		} node;		/* node information */
+		struct {
+			u32 addr[4];
+			u32 mask[4];
+		} node6;        /* IPv6 node information */
+	} u;
+	union {
+		u32 sclass;  /* security class for genfs */
+		u32 behavior;  /* labeling behavior for fs_use */
+	} v;
+	struct context context[2];	/* security context(s) */
+	u32 sid[2];	/* SID(s) */
+	struct ocontext *next;
+};
+
+struct genfs {
+	char *fstype;
+	struct ocontext *head;
+	struct genfs *next;
+};
+
+/* symbol table array indices */
+#define SYM_COMMONS 0
+#define SYM_CLASSES 1
+#define SYM_ROLES   2
+#define SYM_TYPES   3
+#define SYM_USERS   4
+#ifdef CONFIG_SECURITY_SELINUX_MLS
+#define SYM_LEVELS  5
+#define SYM_CATS    6
+#define SYM_BOOLS   7
+#define SYM_NUM     8
+#else
+#define SYM_BOOLS   5
+#define SYM_NUM     6
+#endif
+
+/* object context array indices */
+#define OCON_ISID  0	/* initial SIDs */
+#define OCON_FS    1	/* unlabeled file systems */
+#define OCON_PORT  2	/* TCP and UDP port numbers */
+#define OCON_NETIF 3	/* network interfaces */
+#define OCON_NODE  4	/* nodes */
+#define OCON_FSUSE 5	/* fs_use */
+#define OCON_NODE6 6	/* IPv6 nodes */
+#define OCON_NUM   7
+
+/* The policy database */
+struct policydb {
+	/* symbol tables */
+	struct symtab symtab[SYM_NUM];
+#define p_commons symtab[SYM_COMMONS]
+#define p_classes symtab[SYM_CLASSES]
+#define p_roles symtab[SYM_ROLES]
+#define p_types symtab[SYM_TYPES]
+#define p_users symtab[SYM_USERS]
+#define p_levels symtab[SYM_LEVELS]
+#define p_cats symtab[SYM_CATS]
+#define p_bools symtab[SYM_BOOLS]
+
+	/* symbol names indexed by (value - 1) */
+	char **sym_val_to_name[SYM_NUM];
+#define p_common_val_to_name sym_val_to_name[SYM_COMMONS]
+#define p_class_val_to_name sym_val_to_name[SYM_CLASSES]
+#define p_role_val_to_name sym_val_to_name[SYM_ROLES]
+#define p_type_val_to_name sym_val_to_name[SYM_TYPES]
+#define p_user_val_to_name sym_val_to_name[SYM_USERS]
+#define p_sens_val_to_name sym_val_to_name[SYM_LEVELS]
+#define p_cat_val_to_name sym_val_to_name[SYM_CATS]
+#define p_bool_val_to_name sym_val_to_name[SYM_BOOLS]
+
+	/* class, role, and user attributes indexed by (value - 1) */
+	struct class_datum **class_val_to_struct;
+	struct role_datum **role_val_to_struct;
+	struct user_datum **user_val_to_struct;
+
+	/* type enforcement access vectors and transitions */
+	struct avtab te_avtab;
+
+	/* role transitions */
+	struct role_trans *role_tr;
+
+	/* bools indexed by (value - 1) */
+	struct cond_bool_datum **bool_val_to_struct;
+	/* type enforcement conditional access vectors and transitions */
+	struct avtab te_cond_avtab;
+	/* linked list indexing te_cond_avtab by conditional */
+	struct cond_node* cond_list;
+
+	/* role allows */
+	struct role_allow *role_allow;
+
+	/* security contexts of initial SIDs, unlabeled file systems,
+	   TCP or UDP port numbers, network interfaces and nodes */
+	struct ocontext *ocontexts[OCON_NUM];
+
+        /* security contexts for files in filesystems that cannot support
+	   a persistent label mapping or use another
+	   fixed labeling behavior. */
+  	struct genfs *genfs;
+
+#ifdef CONFIG_SECURITY_SELINUX_MLS
+	/* number of legitimate MLS levels */
+	u32 nlevels;
+
+	struct ebitmap trustedreaders;
+	struct ebitmap trustedwriters;
+	struct ebitmap trustedobjects;
+#endif
+};
+
+extern int policydb_init(struct policydb *p);
+extern int policydb_index_classes(struct policydb *p);
+extern int policydb_index_others(struct policydb *p);
+extern void policydb_destroy(struct policydb *p);
+extern int policydb_load_isids(struct policydb *p, struct sidtab *s);
+extern int policydb_context_isvalid(struct policydb *p, struct context *c);
+extern int policydb_read(struct policydb *p, void *fp);
+
+#define PERM_SYMTAB_SIZE 32
+
+#define POLICYDB_CONFIG_MLS    1
+
+#define OBJECT_R "object_r"
+#define OBJECT_R_VAL 1
+
+#define POLICYDB_MAGIC SELINUX_MAGIC
+#define POLICYDB_STRING "SE Linux"
+
+struct policy_file {
+	char *data;
+	size_t len;
+};
+
+static inline void *next_entry(struct policy_file *fp, size_t bytes)
+{
+	void *buf;
+
+	if (bytes > fp->len)
+		return NULL;
+
+	buf = fp->data;
+	fp->data += bytes;
+	fp->len -= bytes;
+	return buf;
+}
+
+#endif	/* _SS_POLICYDB_H_ */
+

extra/linux-2.6.10/security/selinux/ss/services.h

@@ -0,0 +1,21 @@
+/*
+ * Implementation of the security services.
+ *
+ * Author : Stephen Smalley, <sds@epoch.ncsc.mil>
+ */
+#ifndef _SS_SERVICES_H_
+#define _SS_SERVICES_H_
+
+#include "policydb.h"
+#include "sidtab.h"
+
+/*
+ * The security server uses two global data structures
+ * when providing its services:  the SID table (sidtab)
+ * and the policy database (policydb).
+ */
+extern struct sidtab sidtab;
+extern struct policydb policydb;
+
+#endif	/* _SS_SERVICES_H_ */
+

extra/linux-2.6.10/security/selinux/ss/sidtab.c

@@ -0,0 +1,341 @@
+/*
+ * Implementation of the SID table type.
+ *
+ * Author : Stephen Smalley, <sds@epoch.ncsc.mil>
+ */
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <linux/errno.h>
+#include <linux/sched.h>
+#include "flask.h"
+#include "security.h"
+#include "sidtab.h"
+
+#define SIDTAB_HASH(sid) \
+(sid & SIDTAB_HASH_MASK)
+
+#define INIT_SIDTAB_LOCK(s) spin_lock_init(&s->lock)
+#define SIDTAB_LOCK(s, x) spin_lock_irqsave(&s->lock, x)
+#define SIDTAB_UNLOCK(s, x) spin_unlock_irqrestore(&s->lock, x)
+
+int sidtab_init(struct sidtab *s)
+{
+	int i;
+
+	s->htable = kmalloc(sizeof(*(s->htable)) * SIDTAB_SIZE, GFP_ATOMIC);
+	if (!s->htable)
+		return -ENOMEM;
+	for (i = 0; i < SIDTAB_SIZE; i++)
+		s->htable[i] = NULL;
+	s->nel = 0;
+	s->next_sid = 1;
+	s->shutdown = 0;
+	INIT_SIDTAB_LOCK(s);
+	return 0;
+}
+
+int sidtab_insert(struct sidtab *s, u32 sid, struct context *context)
+{
+	int hvalue, rc = 0;
+	struct sidtab_node *prev, *cur, *newnode;
+
+	if (!s) {
+		rc = -ENOMEM;
+		goto out;
+	}
+
+	hvalue = SIDTAB_HASH(sid);
+	prev = NULL;
+	cur = s->htable[hvalue];
+	while (cur != NULL && sid > cur->sid) {
+		prev = cur;
+		cur = cur->next;
+	}
+
+	if (cur && sid == cur->sid) {
+		rc = -EEXIST;
+		goto out;
+	}
+
+	newnode = kmalloc(sizeof(*newnode), GFP_ATOMIC);
+	if (newnode == NULL) {
+		rc = -ENOMEM;
+		goto out;
+	}
+	newnode->sid = sid;
+	if (context_cpy(&newnode->context, context)) {
+		kfree(newnode);
+		rc = -ENOMEM;
+		goto out;
+	}
+
+	if (prev) {
+		newnode->next = prev->next;
+		wmb();
+		prev->next = newnode;
+	} else {
+		newnode->next = s->htable[hvalue];
+		wmb();
+		s->htable[hvalue] = newnode;
+	}
+
+	s->nel++;
+	if (sid >= s->next_sid)
+		s->next_sid = sid + 1;
+out:
+	return rc;
+}
+
+int sidtab_remove(struct sidtab *s, u32 sid)
+{
+	int hvalue, rc = 0;
+	struct sidtab_node *cur, *last;
+
+	if (!s) {
+		rc = -ENOENT;
+		goto out;
+	}
+
+	hvalue = SIDTAB_HASH(sid);
+	last = NULL;
+	cur = s->htable[hvalue];
+	while (cur != NULL && sid > cur->sid) {
+		last = cur;
+		cur = cur->next;
+	}
+
+	if (cur == NULL || sid != cur->sid) {
+		rc = -ENOENT;
+		goto out;
+	}
+
+	if (last == NULL)
+		s->htable[hvalue] = cur->next;
+	else
+		last->next = cur->next;
+
+	context_destroy(&cur->context);
+
+	kfree(cur);
+	s->nel--;
+out:
+	return rc;
+}
+
+struct context *sidtab_search(struct sidtab *s, u32 sid)
+{
+	int hvalue;
+	struct sidtab_node *cur;
+
+	if (!s)
+		return NULL;
+
+	hvalue = SIDTAB_HASH(sid);
+	cur = s->htable[hvalue];
+	while (cur != NULL && sid > cur->sid)
+		cur = cur->next;
+
+	if (cur == NULL || sid != cur->sid) {
+		/* Remap invalid SIDs to the unlabeled SID. */
+		sid = SECINITSID_UNLABELED;
+		hvalue = SIDTAB_HASH(sid);
+		cur = s->htable[hvalue];
+		while (cur != NULL && sid > cur->sid)
+			cur = cur->next;
+		if (!cur || sid != cur->sid)
+			return NULL;
+	}
+
+	return &cur->context;
+}
+
+int sidtab_map(struct sidtab *s,
+	       int (*apply) (u32 sid,
+			     struct context *context,
+			     void *args),
+	       void *args)
+{
+	int i, rc = 0;
+	struct sidtab_node *cur;
+
+	if (!s)
+		goto out;
+
+	for (i = 0; i < SIDTAB_SIZE; i++) {
+		cur = s->htable[i];
+		while (cur != NULL) {
+			rc = apply(cur->sid, &cur->context, args);
+			if (rc)
+				goto out;
+			cur = cur->next;
+		}
+	}
+out:
+	return rc;
+}
+
+void sidtab_map_remove_on_error(struct sidtab *s,
+				int (*apply) (u32 sid,
+					      struct context *context,
+					      void *args),
+				void *args)
+{
+	int i, ret;
+	struct sidtab_node *last, *cur, *temp;
+
+	if (!s)
+		return;
+
+	for (i = 0; i < SIDTAB_SIZE; i++) {
+		last = NULL;
+		cur = s->htable[i];
+		while (cur != NULL) {
+			ret = apply(cur->sid, &cur->context, args);
+			if (ret) {
+				if (last) {
+					last->next = cur->next;
+				} else {
+					s->htable[i] = cur->next;
+				}
+
+				temp = cur;
+				cur = cur->next;
+				context_destroy(&temp->context);
+				kfree(temp);
+				s->nel--;
+			} else {
+				last = cur;
+				cur = cur->next;
+			}
+		}
+	}
+
+	return;
+}
+
+static inline u32 sidtab_search_context(struct sidtab *s,
+						  struct context *context)
+{
+	int i;
+	struct sidtab_node *cur;
+
+	for (i = 0; i < SIDTAB_SIZE; i++) {
+		cur = s->htable[i];
+		while (cur != NULL) {
+			if (context_cmp(&cur->context, context))
+				return cur->sid;
+			cur = cur->next;
+		}
+	}
+	return 0;
+}
+
+int sidtab_context_to_sid(struct sidtab *s,
+			  struct context *context,
+			  u32 *out_sid)
+{
+	u32 sid;
+	int ret = 0;
+	unsigned long flags;
+
+	*out_sid = SECSID_NULL;
+
+	sid = sidtab_search_context(s, context);
+	if (!sid) {
+		SIDTAB_LOCK(s, flags);
+		/* Rescan now that we hold the lock. */
+		sid = sidtab_search_context(s, context);
+		if (sid)
+			goto unlock_out;
+		/* No SID exists for the context.  Allocate a new one. */
+		if (s->next_sid == UINT_MAX || s->shutdown) {
+			ret = -ENOMEM;
+			goto unlock_out;
+		}
+		sid = s->next_sid++;
+		ret = sidtab_insert(s, sid, context);
+		if (ret)
+			s->next_sid--;
+unlock_out:
+		SIDTAB_UNLOCK(s, flags);
+	}
+
+	if (ret)
+		return ret;
+
+	*out_sid = sid;
+	return 0;
+}
+
+void sidtab_hash_eval(struct sidtab *h, char *tag)
+{
+	int i, chain_len, slots_used, max_chain_len;
+	struct sidtab_node *cur;
+
+	slots_used = 0;
+	max_chain_len = 0;
+	for (i = 0; i < SIDTAB_SIZE; i++) {
+		cur = h->htable[i];
+		if (cur) {
+			slots_used++;
+			chain_len = 0;
+			while (cur) {
+				chain_len++;
+				cur = cur->next;
+			}
+
+			if (chain_len > max_chain_len)
+				max_chain_len = chain_len;
+		}
+	}
+
+	printk(KERN_INFO "%s:  %d entries and %d/%d buckets used, longest "
+	       "chain length %d\n", tag, h->nel, slots_used, SIDTAB_SIZE,
+	       max_chain_len);
+}
+
+void sidtab_destroy(struct sidtab *s)
+{
+	int i;
+	struct sidtab_node *cur, *temp;
+
+	if (!s)
+		return;
+
+	for (i = 0; i < SIDTAB_SIZE; i++) {
+		cur = s->htable[i];
+		while (cur != NULL) {
+			temp = cur;
+			cur = cur->next;
+			context_destroy(&temp->context);
+			kfree(temp);
+		}
+		s->htable[i] = NULL;
+	}
+	kfree(s->htable);
+	s->htable = NULL;
+	s->nel = 0;
+	s->next_sid = 1;
+}
+
+void sidtab_set(struct sidtab *dst, struct sidtab *src)
+{
+	unsigned long flags;
+
+	SIDTAB_LOCK(src, flags);
+	dst->htable = src->htable;
+	dst->nel = src->nel;
+	dst->next_sid = src->next_sid;
+	dst->shutdown = 0;
+	SIDTAB_UNLOCK(src, flags);
+}
+
+void sidtab_shutdown(struct sidtab *s)
+{
+	unsigned long flags;
+
+	SIDTAB_LOCK(s, flags);
+	s->shutdown = 1;
+	SIDTAB_UNLOCK(s, flags);
+}

extra/linux-2.6.10/security/selinux/ss/sidtab.h

@@ -0,0 +1,59 @@
+/*
+ * A security identifier table (sidtab) is a hash table
+ * of security context structures indexed by SID value.
+ *
+ * Author : Stephen Smalley, <sds@epoch.ncsc.mil>
+ */
+#ifndef _SS_SIDTAB_H_
+#define _SS_SIDTAB_H_
+
+#include "context.h"
+
+struct sidtab_node {
+	u32 sid;		/* security identifier */
+	struct context context;	/* security context structure */
+	struct sidtab_node *next;
+};
+
+#define SIDTAB_HASH_BITS 7
+#define SIDTAB_HASH_BUCKETS (1 << SIDTAB_HASH_BITS)
+#define SIDTAB_HASH_MASK (SIDTAB_HASH_BUCKETS-1)
+
+#define SIDTAB_SIZE SIDTAB_HASH_BUCKETS
+
+struct sidtab {
+	struct sidtab_node **htable;
+	unsigned int nel;	/* number of elements */
+	unsigned int next_sid;	/* next SID to allocate */
+	unsigned char shutdown;
+	spinlock_t lock;
+};
+
+int sidtab_init(struct sidtab *s);
+int sidtab_insert(struct sidtab *s, u32 sid, struct context *context);
+struct context *sidtab_search(struct sidtab *s, u32 sid);
+
+int sidtab_map(struct sidtab *s,
+	       int (*apply) (u32 sid,
+			     struct context *context,
+			     void *args),
+	       void *args);
+
+void sidtab_map_remove_on_error(struct sidtab *s,
+				int (*apply) (u32 sid,
+					      struct context *context,
+					      void *args),
+				void *args);
+
+int sidtab_context_to_sid(struct sidtab *s,
+			  struct context *context,
+			  u32 *sid);
+
+void sidtab_hash_eval(struct sidtab *h, char *tag);
+void sidtab_destroy(struct sidtab *s);
+void sidtab_set(struct sidtab *dst, struct sidtab *src);
+void sidtab_shutdown(struct sidtab *s);
+
+#endif	/* _SS_SIDTAB_H_ */
+
+

extra/linux-2.6.10/security/selinux/ss/symtab.c

@@ -0,0 +1,44 @@
+/*
+ * Implementation of the symbol table type.
+ *
+ * Author : Stephen Smalley, <sds@epoch.ncsc.mil>
+ */
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/errno.h>
+#include "symtab.h"
+
+static unsigned int symhash(struct hashtab *h, void *key)
+{
+	char *p, *keyp;
+	unsigned int size;
+	unsigned int val;
+
+	val = 0;
+	keyp = key;
+	size = strlen(keyp);
+	for (p = keyp; (p - keyp) < size; p++)
+		val = (val << 4 | (val >> (8*sizeof(unsigned int)-4))) ^ (*p);
+	return val & (h->size - 1);
+}
+
+static int symcmp(struct hashtab *h, void *key1, void *key2)
+{
+	char *keyp1, *keyp2;
+
+	keyp1 = key1;
+	keyp2 = key2;
+	return strcmp(keyp1, keyp2);
+}
+
+
+int symtab_init(struct symtab *s, unsigned int size)
+{
+	s->table = hashtab_create(symhash, symcmp, size);
+	if (!s->table)
+		return -1;
+	s->nprim = 0;
+	return 0;
+}
+

extra/linux-2.6.10/security/selinux/ss/symtab.h

@@ -0,0 +1,23 @@
+/*
+ * A symbol table (symtab) maintains associations between symbol
+ * strings and datum values.  The type of the datum values
+ * is arbitrary.  The symbol table type is implemented
+ * using the hash table type (hashtab).
+ *
+ * Author : Stephen Smalley, <sds@epoch.ncsc.mil>
+ */
+#ifndef _SS_SYMTAB_H_
+#define _SS_SYMTAB_H_
+
+#include "hashtab.h"
+
+struct symtab {
+	struct hashtab *table;	/* hash table (keyed on a string) */
+	u32 nprim;		/* number of primary names in table */
+};
+
+int symtab_init(struct symtab *s, unsigned int size);
+
+#endif	/* _SS_SYMTAB_H_ */
+
+