ptrace.c (f01387d2693813eb5271a3448e6a082322c7d75d) ptrace.c (743162013d40ca612b4cb53d3a200dff2d9ab26e)
1/*
2 * linux/kernel/ptrace.c
3 *
4 * (C) Copyright 1999 Linus Torvalds
5 *
6 * Common interfaces for "ptrace()" which we do not want
7 * to continually duplicate across every architecture.
8 */

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23#include <linux/syscalls.h>
24#include <linux/uaccess.h>
25#include <linux/regset.h>
26#include <linux/hw_breakpoint.h>
27#include <linux/cn_proc.h>
28#include <linux/compat.h>
29
30
1/*
2 * linux/kernel/ptrace.c
3 *
4 * (C) Copyright 1999 Linus Torvalds
5 *
6 * Common interfaces for "ptrace()" which we do not want
7 * to continually duplicate across every architecture.
8 */

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23#include <linux/syscalls.h>
24#include <linux/uaccess.h>
25#include <linux/regset.h>
26#include <linux/hw_breakpoint.h>
27#include <linux/cn_proc.h>
28#include <linux/compat.h>
29
30
31static int ptrace_trapping_sleep_fn(void *flags)
32{
33 schedule();
34 return 0;
35}
36
37/*
38 * ptrace a task: make the debugger its new parent and
39 * move it to the ptrace list.
40 *
41 * Must be called with the tasklist lock write-held.
42 */
43void __ptrace_link(struct task_struct *child, struct task_struct *new_parent)
44{

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366 retval = 0;
367unlock_tasklist:
368 write_unlock_irq(&tasklist_lock);
369unlock_creds:
370 mutex_unlock(&task->signal->cred_guard_mutex);
371out:
372 if (!retval) {
373 wait_on_bit(&task->jobctl, JOBCTL_TRAPPING_BIT,
31/*
32 * ptrace a task: make the debugger its new parent and
33 * move it to the ptrace list.
34 *
35 * Must be called with the tasklist lock write-held.
36 */
37void __ptrace_link(struct task_struct *child, struct task_struct *new_parent)
38{

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360 retval = 0;
361unlock_tasklist:
362 write_unlock_irq(&tasklist_lock);
363unlock_creds:
364 mutex_unlock(&task->signal->cred_guard_mutex);
365out:
366 if (!retval) {
367 wait_on_bit(&task->jobctl, JOBCTL_TRAPPING_BIT,
374 ptrace_trapping_sleep_fn, TASK_UNINTERRUPTIBLE);
368 TASK_UNINTERRUPTIBLE);
375 proc_ptrace_connector(task, PTRACE_ATTACH);
376 }
377
378 return retval;
379}
380
381/**
382 * ptrace_traceme -- helper for PTRACE_TRACEME

--- 842 unchanged lines hidden --- 		369 proc_ptrace_connector(task, PTRACE_ATTACH);
370 }
371
372 return retval;
373}
374
375/**
376 * ptrace_traceme -- helper for PTRACE_TRACEME

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