sys_setsid: remove now unneeded session != 1 check

Eric's "fix clone(CLONE_NEWPID)" eliminated the last reason for this hack.

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

1 files changed, 1 insertions, 4 deletions

diff --git a/kernel/sys.c b/kernel/sys.c
index 7de9c984f696..ee2e78dbea6c 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -1056,11 +1056,8 @@ asmlinkage long sys_setsid(void)
 
         /* Fail if a process group id already exists that equals the
          * proposed session id.
-         *
-         * Don't check if session == 1, clone(CLONE_NEWPID) creates
-         * this group/session beforehand.
          */
-        if (session != 1 && pid_task(sid, PIDTYPE_PGID))
+        if (pid_task(sid, PIDTYPE_PGID))
                 goto out;
 
         group_leader->signal->leader = 1;