Commit 1caef81d authored by Adrian Reber's avatar Adrian Reber Committed by Christian Brauner

pid: use checkpoint_restore_ns_capable() for set_tid

Use the newly introduced capability CAP_CHECKPOINT_RESTORE to allow
using clone3() with set_tid set.
Signed-off-by: default avatarAdrian Reber <areber@redhat.com>
Signed-off-by: default avatarNicolas Viennot <Nicolas.Viennot@twosigma.com>
Reviewed-by: default avatarSerge Hallyn <serge@hallyn.com>
Acked-by: default avatarChristian Brauner <christian.brauner@ubuntu.com>
Link: https://lore.kernel.org/r/20200719100418.2112740-3-areber@redhat.comSigned-off-by: default avatarChristian Brauner <christian.brauner@ubuntu.com>
parent 124ea650
...@@ -198,7 +198,7 @@ struct pid *alloc_pid(struct pid_namespace *ns, pid_t *set_tid, ...@@ -198,7 +198,7 @@ struct pid *alloc_pid(struct pid_namespace *ns, pid_t *set_tid,
if (tid != 1 && !tmp->child_reaper) if (tid != 1 && !tmp->child_reaper)
goto out_free; goto out_free;
retval = -EPERM; retval = -EPERM;
if (!ns_capable(tmp->user_ns, CAP_SYS_ADMIN)) if (!checkpoint_restore_ns_capable(tmp->user_ns))
goto out_free; goto out_free;
set_tid_size--; set_tid_size--;
} }
......
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