Commit 78d832f6 authored by Serge E. Hallyn's avatar Serge E. Hallyn Committed by Linus Torvalds

[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: default avatarSerge E. Hallyn <serue@us.ibm.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 62b3e920
...@@ -70,6 +70,8 @@ static inline int unshare_utsname(unsigned long unshare_flags, ...@@ -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)
......
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