commit 81dabb464139324c005159f5afba377104d8828d
author Oleg Nesterov <oleg@redhat.com> Wed Jul 03 15:08:26 2013 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> Wed Jul 03 16:08:02 2013 -0700
tree 6f105f6a2a4f32b8ff45efb51889b172452e7282
parent 3f4185483832ccf3d2977923db576fa689c2abce

exit.c: unexport __set_special_pids()

Move __set_special_pids() from exit.c to sys.c close to its single caller
and make it static.

And rename it to set_special_pids(), another helper with this name has
gone away.

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

kernel/sys.c

diff --git a/kernel/sys.c b/kernel/sys.c
index 7bf50dc..071de90 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -1309,6 +1309,17 @@
 	return retval;
 }
 
+static void set_special_pids(struct pid *pid)
+{
+	struct task_struct *curr = current->group_leader;
+
+	if (task_session(curr) != pid)
+		change_pid(curr, PIDTYPE_SID, pid);
+
+	if (task_pgrp(curr) != pid)
+		change_pid(curr, PIDTYPE_PGID, pid);
+}
+
 SYSCALL_DEFINE0(setsid)
 {
 	struct task_struct *group_leader = current->group_leader;
@@ -1328,7 +1339,7 @@
 		goto out;
 
 	group_leader->signal->leader = 1;
-	__set_special_pids(sid);
+	set_special_pids(sid);
 
 	proc_clear_tty(group_leader);