(2006-08-06) rescue-bootcd

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

@@ -0,0 +1 @@
+cmd_usr/built-in.o :=  ld -m elf_i386  -r -o usr/built-in.o usr/initramfs_data.o

extra/linux-2.6.10/usr/.gen_init_cpio.cmd

@@ -0,0 +1,62 @@
+cmd_usr/gen_init_cpio := gcc -Wp,-MD,usr/.gen_init_cpio.d -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer        -o usr/gen_init_cpio usr/gen_init_cpio.c
+
+deps_usr/gen_init_cpio := \
+  usr/gen_init_cpio.c \
+  /usr/include/stdio.h \
+  /usr/include/features.h \
+  /usr/include/sys/cdefs.h \
+  /usr/include/gnu/stubs.h \
+  /usr/lib/gcc/i686-pc-linux-gnu/3.4.1/include/stddef.h \
+  /usr/include/bits/types.h \
+  /usr/include/bits/wordsize.h \
+  /usr/include/bits/typesizes.h \
+  /usr/include/libio.h \
+  /usr/include/_G_config.h \
+  /usr/include/wchar.h \
+  /usr/include/bits/wchar.h \
+  /usr/include/gconv.h \
+  /usr/lib/gcc/i686-pc-linux-gnu/3.4.1/include/stdarg.h \
+  /usr/include/bits/stdio_lim.h \
+  /usr/include/bits/sys_errlist.h \
+  /usr/include/bits/stdio.h \
+  /usr/include/stdlib.h \
+  /usr/include/sys/types.h \
+  /usr/include/time.h \
+  /usr/include/endian.h \
+  /usr/include/bits/endian.h \
+  /usr/include/sys/select.h \
+  /usr/include/bits/select.h \
+  /usr/include/bits/sigset.h \
+  /usr/include/bits/time.h \
+  /usr/include/sys/sysmacros.h \
+  /usr/include/bits/pthreadtypes.h \
+  /usr/include/alloca.h \
+  /usr/include/sys/stat.h \
+  /usr/include/bits/stat.h \
+  /usr/include/string.h \
+  /usr/include/bits/string.h \
+  /usr/include/bits/string2.h \
+  /usr/include/unistd.h \
+  /usr/include/bits/posix_opt.h \
+  /usr/include/bits/confname.h \
+  /usr/include/getopt.h \
+  /usr/include/fcntl.h \
+  /usr/include/bits/fcntl.h \
+  /usr/include/errno.h \
+  /usr/include/bits/errno.h \
+  /usr/include/linux/errno.h \
+  /usr/include/asm/errno.h \
+  /usr/include/asm-generic/errno.h \
+  /usr/include/asm-generic/errno-base.h \
+  /usr/include/ctype.h \
+  /usr/lib/gcc/i686-pc-linux-gnu/3.4.1/include/limits.h \
+  /usr/lib/gcc/i686-pc-linux-gnu/3.4.1/include/syslimits.h \
+  /usr/include/limits.h \
+  /usr/include/bits/posix1_lim.h \
+  /usr/include/bits/local_lim.h \
+  /usr/include/linux/limits.h \
+  /usr/include/bits/posix2_lim.h \
+
+usr/gen_init_cpio: $(deps_usr/gen_init_cpio)
+
+$(deps_usr/gen_init_cpio):

extra/linux-2.6.10/usr/.initramfs_data.cpio.cmd

@@ -0,0 +1 @@
+cmd_usr/initramfs_data.cpio := ./usr/gen_init_cpio usr/initramfs_list > usr/initramfs_data.cpio

extra/linux-2.6.10/usr/.initramfs_data.cpio.gz.cmd

@@ -0,0 +1 @@
+cmd_usr/initramfs_data.cpio.gz := gzip -f -9 < usr/initramfs_data.cpio > usr/initramfs_data.cpio.gz

extra/linux-2.6.10/usr/.initramfs_data.o.cmd

@@ -0,0 +1,8 @@
+cmd_usr/initramfs_data.o := gcc -Wp,-MD,usr/.initramfs_data.o.d -nostdinc -iwithprefix include -D__KERNEL__ -Iinclude  -D__ASSEMBLY__ -Iinclude/asm-i386/mach-default    -c -o usr/initramfs_data.o usr/initramfs_data.S
+
+deps_usr/initramfs_data.o := \
+  usr/initramfs_data.S \
+
+usr/initramfs_data.o: $(deps_usr/initramfs_data.o)
+
+$(deps_usr/initramfs_data.o):

extra/linux-2.6.10/usr/Makefile

@@ -0,0 +1,45 @@
+
+obj-y := initramfs_data.o
+
+hostprogs-y  := gen_init_cpio
+
+clean-files := initramfs_data.cpio.gz initramfs_list
+
+# If you want a different list of files in the initramfs_data.cpio
+# then you can either overwrite the cpio_list in this directory
+# or set INITRAMFS_LIST to another filename.
+INITRAMFS_LIST := $(obj)/initramfs_list
+
+# initramfs_data.o contains the initramfs_data.cpio.gz image.
+# The image is included using .incbin, a dependency which is not
+# tracked automatically.
+$(obj)/initramfs_data.o: $(obj)/initramfs_data.cpio.gz FORCE
+
+# initramfs-y are the programs which will be copied into the CPIO
+# archive. Currently, the filenames are hardcoded in gen_init_cpio,
+# but we need the information for the build as well, so it's duplicated
+# here.
+
+# Commented out for now
+# initramfs-y := $(obj)/root/hello
+
+filechk_initramfs_list = $(CONFIG_SHELL) \
+ $(srctree)/scripts/gen_initramfs_list.sh $(CONFIG_INITRAMFS_SOURCE)
+			   
+$(obj)/initramfs_list: FORCE
+	$(call filechk,initramfs_list)
+
+quiet_cmd_cpio = CPIO    $@
+      cmd_cpio = ./$< $(obj)/initramfs_list > $@
+
+$(obj)/initramfs_data.cpio: $(obj)/gen_init_cpio \
+                            $(initramfs-y) $(obj)/initramfs_list FORCE
+	$(call if_changed,cpio)
+
+targets += initramfs_data.cpio
+
+$(obj)/initramfs_data.cpio.gz: $(obj)/initramfs_data.cpio FORCE
+	$(call if_changed,gzip)
+
+targets += initramfs_data.cpio.gz
+

extra/linux-2.6.10/usr/gen_init_cpio.c

@@ -0,0 +1,404 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <string.h>
+#include <unistd.h>
+#include <time.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <ctype.h>
+#include <limits.h>
+
+#define xstr(s) #s
+#define str(s) xstr(s)
+
+static unsigned int offset;
+static unsigned int ino = 721;
+
+struct file_type {
+	const char *type;
+	int (*handler)(const char *line);
+};
+
+static void push_string(const char *name)
+{
+	unsigned int name_len = strlen(name) + 1;
+
+	fputs(name, stdout);
+	putchar(0);
+	offset += name_len;
+}
+
+static void push_pad (void)
+{
+	while (offset & 3) {
+		putchar(0);
+		offset++;
+	}
+}
+
+static void push_rest(const char *name)
+{
+	unsigned int name_len = strlen(name) + 1;
+	unsigned int tmp_ofs;
+
+	fputs(name, stdout);
+	putchar(0);
+	offset += name_len;
+
+	tmp_ofs = name_len + 110;
+	while (tmp_ofs & 3) {
+		putchar(0);
+		offset++;
+		tmp_ofs++;
+	}
+}
+
+static void push_hdr(const char *s)
+{
+	fputs(s, stdout);
+	offset += 110;
+}
+
+static void cpio_trailer(void)
+{
+	char s[256];
+	const char name[] = "TRAILER!!!";
+
+	sprintf(s, "%s%08X%08X%08lX%08lX%08X%08lX"
+	       "%08X%08X%08X%08X%08X%08X%08X",
+		"070701",		/* magic */
+		0,			/* ino */
+		0,			/* mode */
+		(long) 0,		/* uid */
+		(long) 0,		/* gid */
+		1,			/* nlink */
+		(long) 0,		/* mtime */
+		0,			/* filesize */
+		0,			/* major */
+		0,			/* minor */
+		0,			/* rmajor */
+		0,			/* rminor */
+		(unsigned)strlen(name) + 1, /* namesize */
+		0);			/* chksum */
+	push_hdr(s);
+	push_rest(name);
+
+	while (offset % 512) {
+		putchar(0);
+		offset++;
+	}
+}
+
+static int cpio_mkdir(const char *name, unsigned int mode,
+		       uid_t uid, gid_t gid)
+{
+	char s[256];
+	time_t mtime = time(NULL);
+
+	sprintf(s,"%s%08X%08X%08lX%08lX%08X%08lX"
+	       "%08X%08X%08X%08X%08X%08X%08X",
+		"070701",		/* magic */
+		ino++,			/* ino */
+		S_IFDIR | mode,		/* mode */
+		(long) uid,		/* uid */
+		(long) gid,		/* gid */
+		2,			/* nlink */
+		(long) mtime,		/* mtime */
+		0,			/* filesize */
+		3,			/* major */
+		1,			/* minor */
+		0,			/* rmajor */
+		0,			/* rminor */
+		(unsigned)strlen(name) + 1,/* namesize */
+		0);			/* chksum */
+	push_hdr(s);
+	push_rest(name);
+	return 0;
+}
+
+static int cpio_mkdir_line(const char *line)
+{
+	char name[PATH_MAX + 1];
+	unsigned int mode;
+	int uid;
+	int gid;
+	int rc = -1;
+
+	if (4 != sscanf(line, "%" str(PATH_MAX) "s %o %d %d", name, &mode, &uid, &gid)) {
+		fprintf(stderr, "Unrecognized dir format '%s'", line);
+		goto fail;
+	}
+	rc = cpio_mkdir(name, mode, uid, gid);
+ fail:
+	return rc;
+}
+
+static int cpio_mknod(const char *name, unsigned int mode,
+		       uid_t uid, gid_t gid, char dev_type,
+		       unsigned int maj, unsigned int min)
+{
+	char s[256];
+	time_t mtime = time(NULL);
+
+	if (dev_type == 'b')
+		mode |= S_IFBLK;
+	else
+		mode |= S_IFCHR;
+
+	sprintf(s,"%s%08X%08X%08lX%08lX%08X%08lX"
+	       "%08X%08X%08X%08X%08X%08X%08X",
+		"070701",		/* magic */
+		ino++,			/* ino */
+		mode,			/* mode */
+		(long) uid,		/* uid */
+		(long) gid,		/* gid */
+		1,			/* nlink */
+		(long) mtime,		/* mtime */
+		0,			/* filesize */
+		3,			/* major */
+		1,			/* minor */
+		maj,			/* rmajor */
+		min,			/* rminor */
+		(unsigned)strlen(name) + 1,/* namesize */
+		0);			/* chksum */
+	push_hdr(s);
+	push_rest(name);
+	return 0;
+}
+
+static int cpio_mknod_line(const char *line)
+{
+	char name[PATH_MAX + 1];
+	unsigned int mode;
+	int uid;
+	int gid;
+	char dev_type;
+	unsigned int maj;
+	unsigned int min;
+	int rc = -1;
+
+	if (7 != sscanf(line, "%" str(PATH_MAX) "s %o %d %d %c %u %u",
+			 name, &mode, &uid, &gid, &dev_type, &maj, &min)) {
+		fprintf(stderr, "Unrecognized nod format '%s'", line);
+		goto fail;
+	}
+	rc = cpio_mknod(name, mode, uid, gid, dev_type, maj, min);
+ fail:
+	return rc;
+}
+
+/* Not marked static to keep the compiler quiet, as no one uses this yet... */
+static int cpio_mkfile(const char *name, const char *location,
+			unsigned int mode, uid_t uid, gid_t gid)
+{
+	char s[256];
+	char *filebuf = NULL;
+	struct stat buf;
+	int file = -1;
+	int retval;
+	int i;
+	int rc = -1;
+
+	mode |= S_IFREG;
+
+	retval = stat (location, &buf);
+	if (retval) {
+		fprintf (stderr, "File %s could not be located\n", location);
+		goto error;
+	}
+
+	file = open (location, O_RDONLY);
+	if (file < 0) {
+		fprintf (stderr, "File %s could not be opened for reading\n", location);
+		goto error;
+	}
+
+	filebuf = malloc(buf.st_size);
+	if (!filebuf) {
+		fprintf (stderr, "out of memory\n");
+		goto error;
+	}
+
+	retval = read (file, filebuf, buf.st_size);
+	if (retval < 0) {
+		fprintf (stderr, "Can not read %s file\n", location);
+		goto error;
+	}
+
+	sprintf(s,"%s%08X%08X%08lX%08lX%08X%08lX"
+	       "%08X%08X%08X%08X%08X%08X%08X",
+		"070701",		/* magic */
+		ino++,			/* ino */
+		mode,			/* mode */
+		(long) uid,		/* uid */
+		(long) gid,		/* gid */
+		1,			/* nlink */
+		(long) buf.st_mtime,	/* mtime */
+		(int) buf.st_size,	/* filesize */
+		3,			/* major */
+		1,			/* minor */
+		0,			/* rmajor */
+		0,			/* rminor */
+		(unsigned)strlen(name) + 1,/* namesize */
+		0);			/* chksum */
+	push_hdr(s);
+	push_string(name);
+	push_pad();
+
+	for (i = 0; i < buf.st_size; ++i)
+		fputc(filebuf[i], stdout);
+	offset += buf.st_size;
+	push_pad();
+	rc = 0;
+	
+error:
+	if (filebuf) free(filebuf);
+	if (file >= 0) close(file);
+	return rc;
+}
+
+static int cpio_mkfile_line(const char *line)
+{
+	char name[PATH_MAX + 1];
+	char location[PATH_MAX + 1];
+	unsigned int mode;
+	int uid;
+	int gid;
+	int rc = -1;
+
+	if (5 != sscanf(line, "%" str(PATH_MAX) "s %" str(PATH_MAX) "s %o %d %d", name, location, &mode, &uid, &gid)) {
+		fprintf(stderr, "Unrecognized file format '%s'", line);
+		goto fail;
+	}
+	rc = cpio_mkfile(name, location, mode, uid, gid);
+ fail:
+	return rc;
+}
+
+void usage(const char *prog)
+{
+	fprintf(stderr, "Usage:\n"
+		"\t%s <cpio_list>\n"
+		"\n"
+		"<cpio_list> is a file containing newline separated entries that\n"
+		"describe the files to be included in the initramfs archive:\n"
+		"\n"
+		"# a comment\n"
+		"file <name> <location> <mode> <uid> <gid> \n"
+		"dir <name> <mode> <uid> <gid>\n"
+		"nod <name> <mode> <uid> <gid> <dev_type> <maj> <min>\n"
+		"\n"
+		"<name>      name of the file/dir/nod in the archive\n"
+		"<location>  location of the file in the current filesystem\n"
+		"<mode>      mode/permissions of the file\n"
+		"<uid>       user id (0=root)\n"
+		"<gid>       group id (0=root)\n"
+		"<dev_type>  device type (b=block, c=character)\n"
+		"<maj>       major number of nod\n"
+		"<min>       minor number of nod\n"
+		"\n"
+		"example:\n"
+		"# A simple initramfs\n"
+		"dir /dev 0755 0 0\n"
+		"nod /dev/console 0600 0 0 c 5 1\n"
+		"dir /root 0700 0 0\n"
+		"dir /sbin 0755 0 0\n"
+		"file /sbin/kinit /usr/src/klibc/kinit/kinit 0755 0 0\n",
+		prog);
+}
+
+struct file_type file_type_table[] = {
+	{
+		.type    = "file",
+		.handler = cpio_mkfile_line,
+	}, {
+		.type    = "nod",
+		.handler = cpio_mknod_line,
+	}, {
+		.type    = "dir",
+		.handler = cpio_mkdir_line,
+	}, {
+		.type    = NULL,
+		.handler = NULL,
+	}
+};
+
+#define LINE_SIZE (2 * PATH_MAX + 50)
+
+int main (int argc, char *argv[])
+{
+	FILE *cpio_list;
+	char line[LINE_SIZE];
+	char *args, *type;
+	int ec = 0;
+	int line_nr = 0;
+
+	if (2 != argc) {
+		usage(argv[0]);
+		exit(1);
+	}
+
+	if (! (cpio_list = fopen(argv[1], "r"))) {
+		fprintf(stderr, "ERROR: unable to open '%s': %s\n\n",
+			argv[1], strerror(errno));
+		usage(argv[0]);
+		exit(1);
+	}
+
+	while (fgets(line, LINE_SIZE, cpio_list)) {
+		int type_idx;
+		size_t slen = strlen(line);
+
+		line_nr++;
+
+		if ('#' == *line) {
+			/* comment - skip to next line */
+			continue;
+		}
+
+		if (! (type = strtok(line, " \t"))) {
+			fprintf(stderr,
+				"ERROR: incorrect format, could not locate file type line %d: '%s'\n",
+				line_nr, line);
+			ec = -1;
+		}
+
+		if ('\n' == *type) {
+			/* a blank line */
+			continue;
+		}
+
+		if (slen == strlen(type)) {
+			/* must be an empty line */
+			continue;
+		}
+
+		if (! (args = strtok(NULL, "\n"))) {
+			fprintf(stderr,
+				"ERROR: incorrect format, newline required line %d: '%s'\n",
+				line_nr, line);
+			ec = -1;
+		}
+
+		for (type_idx = 0; file_type_table[type_idx].type; type_idx++) {
+			int rc;
+			if (! strcmp(line, file_type_table[type_idx].type)) {
+				if ((rc = file_type_table[type_idx].handler(args))) {
+					ec = rc;
+					fprintf(stderr, " line %d\n", line_nr);
+				}
+				break;
+			}
+		}
+
+		if (NULL == file_type_table[type_idx].type) {
+			fprintf(stderr, "unknown file type line %d: '%s'\n",
+				line_nr, line);
+		}
+	}
+	cpio_trailer();
+
+	exit(ec);
+}

extra/linux-2.6.10/usr/initramfs_data.S

@@ -0,0 +1,30 @@
+/*
+  initramfs_data includes the compressed binary that is the
+  filesystem used for early user space.
+  Note: Older versions of "as" (prior to binutils 2.11.90.0.23
+  released on 2001-07-14) dit not support .incbin.
+  If you are forced to use older binutils than that then the
+  following trick can be applied to create the resulting binary:
+
+
+  ld -m elf_i386  --format binary --oformat elf32-i386 -r \
+  -T initramfs_data.scr initramfs_data.cpio.gz -o initramfs_data.o
+   ld -m elf_i386  -r -o built-in.o initramfs_data.o
+
+  initramfs_data.scr looks like this:
+SECTIONS
+{
+       .init.ramfs : { *(.data) }
+}
+
+  The above example is for i386 - the parameters vary from architectures.
+  Eventually look up LDFLAGS_BLOB in an older version of the
+  arch/$(ARCH)/Makefile to see the flags used before .incbin was introduced.
+
+  Using .incbin has the advantage over ld that the correct flags are set
+  in the ELF header, as required by certain architectures.
+*/
+
+.section .init.ramfs,"a"
+.incbin "usr/initramfs_data.cpio.gz"
+

extra/linux-2.6.10/usr/initramfs_list

@@ -0,0 +1,5 @@
+# This is a very simple initramfs
+
+dir /dev 0755 0 0
+nod /dev/console 0600 0 0 c 5 1
+dir /root 0700 0 0