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ptrace: Send signals with final state explicitly

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According to Oleg the PTRACE_KILL doesn't and was-not-supposed-to work.
Thus, kill tasks to final state explicitly and just detach from them.

Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
This commit is contained in:
Pavel Emelyanov 2012-02-03 14:49:57 +04:00 committed by Cyrill Gorcunov
parent cff9654d62
commit 06cc19511a
1 changed files with 7 additions and 8 deletions
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15
ptrace.c
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@ -21,15 +21,14 @@
int unseize_task(pid_t pid, enum cr_task_state st) int unseize_task(pid_t pid, enum cr_task_state st)
{ {
if (st == CR_TASK_STOP) if (st == CR_TASK_KILL)
return ptrace(PTRACE_DETACH, pid, NULL, NULL);
else if (st == CR_TASK_KILL) {
kill(pid, SIGKILL); kill(pid, SIGKILL);
return ptrace(PTRACE_KILL, pid, NULL, NULL); else if (st == CR_TASK_STOP)
} else { kill(pid, SIGSTOP);
BUG_ON(1); else
return -1; pr_err("Unknown final state %d\n", st);
}
return ptrace(PTRACE_DETACH, pid, NULL, NULL);
} }
/* /*