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authorEric W. Biederman <ebiederm@xmission.com>2014-12-06 02:19:27 +0300
committerEric W. Biederman <ebiederm@xmission.com>2014-12-06 02:19:27 +0300
commit7ff4d90b4c24a03666f296c3d4878cd39001e81e (patch)
tree757293c98c93eec1c5b7caae149c34e49bb824c5 /include/linux/cred.h
parent4fed655c410cc56add64c7b1f7c85c7c56066ac2 (diff)
downloadlinux-7ff4d90b4c24a03666f296c3d4878cd39001e81e.tar.xz
groups: Consolidate the setgroups permission checks
Today there are 3 instances of setgroups and due to an oversight their permission checking has diverged. Add a common function so that they may all share the same permission checking code. This corrects the current oversight in the current permission checks and adds a helper to avoid this in the future. A user namespace security fix will update this new helper, shortly. Cc: stable@vger.kernel.org Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Diffstat (limited to 'include/linux/cred.h')
-rw-r--r--include/linux/cred.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/cred.h b/include/linux/cred.h
index b2d0820837c4..2fb2ca2127ed 100644
--- a/include/linux/cred.h
+++ b/include/linux/cred.h
@@ -68,6 +68,7 @@ extern void groups_free(struct group_info *);
extern int set_current_groups(struct group_info *);
extern void set_groups(struct cred *, struct group_info *);
extern int groups_search(const struct group_info *, kgid_t);
+extern bool may_setgroups(void);
/* access the groups "array" with this macro */
#define GROUP_AT(gi, i) \