[PATCH v6 2/7] pid: use checkpoint_restore_ns_capable() for set_tid

[Adrian Reber <areber@xxxxxxxxxx>]

Use the newly introduced capability CAP_CHECKPOINT_RESTORE to allow
using clone3() with set_tid set.

Signed-off-by: Adrian Reber <areber@xxxxxxxxxx>
Signed-off-by: Nicolas Viennot <Nicolas.Viennot@xxxxxxxxxxxx>
Acked-by: Christian Brauner <christian.brauner@xxxxxxxxxx>
Reviewed-by: Serge Hallyn <serge@xxxxxxxxxx>
---
 kernel/pid.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/pid.c b/kernel/pid.c
index de9d29c41d77..a9cbab0194d9 100644
--- a/kernel/pid.c
+++ b/kernel/pid.c
@@ -199,7 +199,7 @@ struct pid *alloc_pid(struct pid_namespace *ns, pid_t *set_tid,
 			if (tid != 1 && !tmp->child_reaper)
 				goto out_free;
 			retval = -EPERM;
-			if (!ns_capable(tmp->user_ns, CAP_SYS_ADMIN))
+			if (!checkpoint_restore_ns_capable(tmp->user_ns))
 				goto out_free;
 			set_tid_size--;
 		}
-- 
2.26.2