aboutsummaryrefslogtreecommitdiffstats
path: root/kernel
diff options
context:
space:
mode:
authorSukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>2009-01-06 14:42:46 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-01-06 15:59:29 -0800
commit9cd4fd10437dda6b520cb1410b28f36967a34de8 (patch)
tree1a1d5eaa0d650c1efe0e63dbadb9674cac209d9d /kernel
parent09bca05c90c639f57aae057e0c28f287e61f5a07 (diff)
downloadmrst-s0i3-test-9cd4fd10437dda6b520cb1410b28f36967a34de8.tar.gz
mrst-s0i3-test-9cd4fd10437dda6b520cb1410b28f36967a34de8.tar.xz
mrst-s0i3-test-9cd4fd10437dda6b520cb1410b28f36967a34de8.zip
SEND_SIG_NOINFO: set si_pid to tgid instead of pid
POSIX requires the si_pid to be the process id of the sender, so ->si_pid should really be set to 'tgid'. This change does have following changes in behavior: - When sending pdeath_signal on re-parent to a sub-thread, ->si_pid cannot be used to identify the thread that did the re-parent since it will now show the tgid instead of thread id. - A multi-threaded application that expects to find the specific thread that encountered a SIGPIPE using the ->si_pid will now break. Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Acked-By: Roland McGrath <roland@redhat.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Oleg Nesterov <oleg@tv-sign.ru> Cc: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/signal.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/signal.c b/kernel/signal.c
index 31db63b3f88..3152ac3b62e 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -858,7 +858,7 @@ static int send_signal(int sig, struct siginfo *info, struct task_struct *t,
q->info.si_signo = sig;
q->info.si_errno = 0;
q->info.si_code = SI_USER;
- q->info.si_pid = task_pid_nr_ns(current,
+ q->info.si_pid = task_tgid_nr_ns(current,
task_active_pid_ns(t));
q->info.si_uid = current_uid();
break;