[v5,3/6] pid_namespace: use checkpoint_restore_ns_capable() for ns_last_pid
diff mbox series

Message ID 20200715144954.1387760-4-areber@redhat.com
State New
Headers show
Series
  • capabilities: Introduce CAP_CHECKPOINT_RESTORE
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Commit Message

Adrian Reber July 15, 2020, 2:49 p.m. UTC
Use the newly introduced capability CAP_CHECKPOINT_RESTORE to allow
writing to ns_last_pid.

Signed-off-by: Adrian Reber <areber@redhat.com>
Signed-off-by: Nicolas Viennot <Nicolas.Viennot@twosigma.com>
---
 kernel/pid_namespace.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Christian Brauner July 15, 2020, 3:08 p.m. UTC | #1
On Wed, Jul 15, 2020 at 04:49:51PM +0200, Adrian Reber wrote:
> Use the newly introduced capability CAP_CHECKPOINT_RESTORE to allow
> writing to ns_last_pid.
> 
> Signed-off-by: Adrian Reber <areber@redhat.com>
> Signed-off-by: Nicolas Viennot <Nicolas.Viennot@twosigma.com>
> ---

Acked-by: Christian Brauner <christian.brauner@ubuntu.com>

Patch
diff mbox series

diff --git a/kernel/pid_namespace.c b/kernel/pid_namespace.c
index 0e5ac162c3a8..ac135bd600eb 100644
--- a/kernel/pid_namespace.c
+++ b/kernel/pid_namespace.c
@@ -269,7 +269,7 @@  static int pid_ns_ctl_handler(struct ctl_table *table, int write,
 	struct ctl_table tmp = *table;
 	int ret, next;
 
-	if (write && !ns_capable(pid_ns->user_ns, CAP_SYS_ADMIN))
+	if (write && !checkpoint_restore_ns_capable(pid_ns->user_ns))
 		return -EPERM;
 
 	/*