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[PATCH] utsns: fix !CONFIG_UTS_NS behavior

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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>
This commit is contained in:
Serge E. Hallyn 2007-03-26 21:32:22 -08:00 committed by Linus Torvalds
parent 62b3e920ed
commit 78d832f626
1 changed files with 2 additions and 0 deletions
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2
include/linux/utsname.h
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@ -70,6 +70,8 @@ static inline int unshare_utsname(unsigned long unshare_flags,
static inline int copy_utsname(int flags, struct task_struct *tsk) static inline int copy_utsname(int flags, struct task_struct *tsk)
{ {
if (flags & CLONE_NEWUTS)
return -EINVAL;
return 0; return 0;
} }
static inline void put_uts_ns(struct uts_namespace *ns) static inline void put_uts_ns(struct uts_namespace *ns)