[PATCH review 02/12] userns: Handle -1 in k[ug]id_has_mapping when !CONFIG_USER_NS
From: Eric W. Biederman <hidden>
Date: 2016-07-06 18:24:59
Also in:
linux-fsdevel
Subsystem:
the rest · Maintainer:
Linus Torvalds
Refuse to admit any user namespace has a mapping of the INVALID_UID and the INVALID_GID when !CONFIG_USER_NS. Acked-by: Seth Forshee <redacted> Signed-off-by: "Eric W. Biederman" <redacted> --- include/linux/uidgid.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/include/linux/uidgid.h b/include/linux/uidgid.h
index 03835522dfcb..25e9d9216340 100644
--- a/include/linux/uidgid.h
+++ b/include/linux/uidgid.h@@ -177,12 +177,12 @@ static inline gid_t from_kgid_munged(struct user_namespace *to, kgid_t kgid) static inline bool kuid_has_mapping(struct user_namespace *ns, kuid_t uid) { - return true; + return uid_valid(uid); } static inline bool kgid_has_mapping(struct user_namespace *ns, kgid_t gid) { - return true; + return gid_valid(gid); } #endif /* CONFIG_USER_NS */
--
2.8.3