137 lines
3.1 KiB
C
137 lines
3.1 KiB
C
#include <linux/mm.h>
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#include <linux/hugetlb.h>
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#include <linux/seq_file.h>
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#include <asm/elf.h>
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#include <asm/uaccess.h>
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char *task_mem(struct mm_struct *mm, char *buffer)
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{
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unsigned long data, text, lib;
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data = mm->total_vm - mm->shared_vm - mm->stack_vm;
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text = (PAGE_ALIGN(mm->end_code) - (mm->start_code & PAGE_MASK)) >> 10;
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lib = (mm->exec_vm << (PAGE_SHIFT-10)) - text;
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buffer += sprintf(buffer,
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"VmSize:\t%8lu kB\n"
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"VmLck:\t%8lu kB\n"
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"VmRSS:\t%8lu kB\n"
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"VmData:\t%8lu kB\n"
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"VmStk:\t%8lu kB\n"
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"VmExe:\t%8lu kB\n"
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"VmLib:\t%8lu kB\n"
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"VmPTE:\t%8lu kB\n",
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(mm->total_vm - mm->reserved_vm) << (PAGE_SHIFT-10),
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mm->locked_vm << (PAGE_SHIFT-10),
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mm->rss << (PAGE_SHIFT-10),
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data << (PAGE_SHIFT-10),
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mm->stack_vm << (PAGE_SHIFT-10), text, lib,
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(PTRS_PER_PTE*sizeof(pte_t)*mm->nr_ptes) >> 10);
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return buffer;
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}
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unsigned long task_vsize(struct mm_struct *mm)
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{
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return PAGE_SIZE * mm->total_vm;
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}
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int task_statm(struct mm_struct *mm, int *shared, int *text,
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int *data, int *resident)
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{
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*shared = mm->rss - mm->anon_rss;
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*text = (PAGE_ALIGN(mm->end_code) - (mm->start_code & PAGE_MASK))
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>> PAGE_SHIFT;
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*data = mm->total_vm - mm->shared_vm;
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*resident = mm->rss;
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return mm->total_vm;
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}
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static int show_map(struct seq_file *m, void *v)
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{
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struct vm_area_struct *map = v;
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struct file *file = map->vm_file;
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int flags = map->vm_flags;
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unsigned long ino = 0;
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dev_t dev = 0;
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int len;
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if (file) {
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struct inode *inode = map->vm_file->f_dentry->d_inode;
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dev = inode->i_sb->s_dev;
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ino = inode->i_ino;
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}
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seq_printf(m, "%08lx-%08lx %c%c%c%c %08lx %02x:%02x %lu %n",
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map->vm_start,
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map->vm_end,
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flags & VM_READ ? 'r' : '-',
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flags & VM_WRITE ? 'w' : '-',
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flags & VM_EXEC ? 'x' : '-',
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flags & VM_MAYSHARE ? 's' : 'p',
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map->vm_pgoff << PAGE_SHIFT,
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MAJOR(dev), MINOR(dev), ino, &len);
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if (map->vm_file) {
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len = 25 + sizeof(void*) * 6 - len;
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if (len < 1)
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len = 1;
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seq_printf(m, "%*c", len, ' ');
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seq_path(m, file->f_vfsmnt, file->f_dentry, "");
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}
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seq_putc(m, '\n');
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return 0;
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}
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static void *m_start(struct seq_file *m, loff_t *pos)
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{
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struct task_struct *task = m->private;
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struct mm_struct *mm = get_task_mm(task);
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struct vm_area_struct * map;
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loff_t l = *pos;
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if (!mm)
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return NULL;
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down_read(&mm->mmap_sem);
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map = mm->mmap;
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while (l-- && map)
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map = map->vm_next;
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if (!map) {
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up_read(&mm->mmap_sem);
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mmput(mm);
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if (l == -1)
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map = get_gate_vma(task);
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}
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return map;
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}
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static void m_stop(struct seq_file *m, void *v)
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{
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struct task_struct *task = m->private;
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struct vm_area_struct *map = v;
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if (map && map != get_gate_vma(task)) {
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struct mm_struct *mm = map->vm_mm;
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up_read(&mm->mmap_sem);
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mmput(mm);
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}
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}
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static void *m_next(struct seq_file *m, void *v, loff_t *pos)
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{
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struct task_struct *task = m->private;
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struct vm_area_struct *map = v;
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(*pos)++;
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if (map->vm_next)
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return map->vm_next;
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m_stop(m, v);
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if (map != get_gate_vma(task))
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return get_gate_vma(task);
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return NULL;
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}
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struct seq_operations proc_pid_maps_op = {
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.start = m_start,
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.next = m_next,
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.stop = m_stop,
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.show = show_map
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};
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