wait_task_stopped(): pass correct exit_code to wait_noreap_copyout()
authorScott James Remnant <scott@ubuntu.com>
Thu, 29 Nov 2007 00:22:07 +0000 (16:22 -0800)
committerLinus Torvalds <torvalds@woody.linux-foundation.org>
Thu, 29 Nov 2007 17:24:55 +0000 (09:24 -0800)
commite6ceb32aa25fc33f21af84cc7a32fe289b3e860c
tree6a7684a5ac0f841a0bb85ce3a679e5836bd0e2df
parent14816b1e2b0eb24ef41dbe37dcb558338e54a603
wait_task_stopped(): pass correct exit_code to wait_noreap_copyout()

In wait_task_stopped() exit_code already contains the right value for the
si_status member of siginfo, and this is simply set in the non WNOWAIT
case.

If you call waitid() with a stopped or traced process, you'll get the signal
in siginfo.si_status as expected -- however if you call waitid(WNOWAIT) at the
same time, you'll get the signal << 8 | 0x7f

Pass it unchanged to wait_noreap_copyout(); we would only need to shift it
and add 0x7f if we were returning it in the user status field and that
isn't used for any function that permits WNOWAIT.

Signed-off-by: Scott James Remnant <scott@ubuntu.com>
Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Roland McGrath <roland@redhat.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
kernel/exit.c