If the kernel is not configured with the CONFIG_UTS_NS, unshare of ipc namespace will fail and return -EINVAL. The patch changes the dummy unshare_utsname() to check the clone flags before returning. Signed-off-by: Cedric Le Goater <clg at fr.ibm.com> Cc: Andrew Morton <akpm at osdl.org> Cc: Serge E. Hallyn <serue at us.ibm.com> Cc: Linux Containers <containers at lists.osdl.org> --- include/linux/utsname.h | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) Index: 2.6.18-rc6-mm2/include/linux/utsname.h =================================================================== --- 2.6.18-rc6-mm2.orig/include/linux/utsname.h +++ 2.6.18-rc6-mm2/include/linux/utsname.h @@ -60,8 +60,12 @@ static inline void put_uts_ns(struct uts static inline int unshare_utsname(unsigned long unshare_flags, struct uts_namespace **new_uts) { - return -EINVAL; + if (unshare_flags & CLONE_NEWUTS) + return -EINVAL; + + return 0; } + static inline int copy_utsname(int flags, struct task_struct *tsk) { return 0;