aboutsummaryrefslogtreecommitdiff
path: root/kernel/pid_namespace.c
diff options
context:
space:
mode:
authorSukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>2009-09-23 15:57:22 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-09-24 07:21:04 -0700
commite5a4738699d6eca408dcb225bd350413927701e2 (patch)
tree1a24e5d7d5eb85affbaf435dbe626ba0a401bb62 /kernel/pid_namespace.c
parent123be07b0b399670a7cc3d82fef0cb4f93ef885c (diff)
downloadvexpress-lsk-e5a4738699d6eca408dcb225bd350413927701e2.tar.gz
pidns: deny CLONE_PARENT|CLONE_NEWPID combination
CLONE_PARENT was used to implement an older threading model. For consistency with the CLONE_THREAD check in copy_pid_ns(), disable CLONE_PARENT with CLONE_NEWPID, at least until the required semantics of pid namespaces are clear. Signed-off-by: Sukadev Bhattiprolu <sukadev@us.ibm.com> Acked-by: Roland McGrath <roland@redhat.com> Acked-by: Serge Hallyn <serue@us.ibm.com> Cc: Oren Laadan <orenl@cs.columbia.edu> Cc: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/pid_namespace.c')
-rw-r--r--kernel/pid_namespace.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/pid_namespace.c b/kernel/pid_namespace.c
index 821722ae58a..86b3796b043 100644
--- a/kernel/pid_namespace.c
+++ b/kernel/pid_namespace.c
@@ -118,7 +118,7 @@ struct pid_namespace *copy_pid_ns(unsigned long flags, struct pid_namespace *old
{
if (!(flags & CLONE_NEWPID))
return get_pid_ns(old_ns);
- if (flags & CLONE_THREAD)
+ if (flags & (CLONE_THREAD|CLONE_PARENT))
return ERR_PTR(-EINVAL);
return create_pid_namespace(old_ns);
}