Commit 78d832f6 authored Mar 26, 2007 by Serge E. Hallyn Committed by Linus Torvalds Mar 27, 2007

[PATCH] utsns: fix !CONFIG_UTS_NS behavior



When CONFIG_UTS_NS=n, clone(CLONE_NEWUTS) quietly refuses.  So correctly does
not unshare a new uts namespace, but also does not return -EINVAL.

Fix this to return -EINVAL so the caller knows his request was denied.

Signed-off-by: Serge E. Hallyn <serue@us.ibm.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>

parent 62b3e920

include/linux/utsname.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -70,6 +70,8 @@ static inline int unshare_utsname(unsigned long unshare_flags,

		static inline int copy_utsname(int flags, struct task_struct *tsk)
		{
		if (flags & CLONE_NEWUTS)
		return -EINVAL;
		return 0;
		}
		static inline void put_uts_ns(struct uts_namespace *ns)