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Diffstat (limited to 'kernel/utsname.c')
-rw-r--r--kernel/utsname.c12
1 files changed, 7 insertions, 5 deletions
diff --git a/kernel/utsname.c b/kernel/utsname.c
index a7b3a8d1ad24..44646179eaba 100644
--- a/kernel/utsname.c
+++ b/kernel/utsname.c
@@ -31,7 +31,8 @@ static struct uts_namespace *create_uts_ns(void)
31 * @old_ns: namespace to clone 31 * @old_ns: namespace to clone
32 * Return NULL on error (failure to kmalloc), new ns otherwise 32 * Return NULL on error (failure to kmalloc), new ns otherwise
33 */ 33 */
34static struct uts_namespace *clone_uts_ns(struct uts_namespace *old_ns) 34static struct uts_namespace *clone_uts_ns(struct task_struct *tsk,
35 struct uts_namespace *old_ns)
35{ 36{
36 struct uts_namespace *ns; 37 struct uts_namespace *ns;
37 38
@@ -41,8 +42,7 @@ static struct uts_namespace *clone_uts_ns(struct uts_namespace *old_ns)
41 42
42 down_read(&uts_sem); 43 down_read(&uts_sem);
43 memcpy(&ns->name, &old_ns->name, sizeof(ns->name)); 44 memcpy(&ns->name, &old_ns->name, sizeof(ns->name));
44 ns->user_ns = old_ns->user_ns; 45 ns->user_ns = get_user_ns(task_cred_xxx(tsk, user)->user_ns);
45 get_user_ns(ns->user_ns);
46 up_read(&uts_sem); 46 up_read(&uts_sem);
47 return ns; 47 return ns;
48} 48}
@@ -53,8 +53,10 @@ static struct uts_namespace *clone_uts_ns(struct uts_namespace *old_ns)
53 * utsname of this process won't be seen by parent, and vice 53 * utsname of this process won't be seen by parent, and vice
54 * versa. 54 * versa.
55 */ 55 */
56struct uts_namespace *copy_utsname(unsigned long flags, struct uts_namespace *old_ns) 56struct uts_namespace *copy_utsname(unsigned long flags,
57 struct task_struct *tsk)
57{ 58{
59 struct uts_namespace *old_ns = tsk->nsproxy->uts_ns;
58 struct uts_namespace *new_ns; 60 struct uts_namespace *new_ns;
59 61
60 BUG_ON(!old_ns); 62 BUG_ON(!old_ns);
@@ -63,7 +65,7 @@ struct uts_namespace *copy_utsname(unsigned long flags, struct uts_namespace *ol
63 if (!(flags & CLONE_NEWUTS)) 65 if (!(flags & CLONE_NEWUTS))
64 return old_ns; 66 return old_ns;
65 67
66 new_ns = clone_uts_ns(old_ns); 68 new_ns = clone_uts_ns(tsk, old_ns);
67 69
68 put_uts_ns(old_ns); 70 put_uts_ns(old_ns);
69 return new_ns; 71 return new_ns;