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| author | Eric W. Biederman <ebiederm@xmission.com> | 2014-12-05 17:19:27 -0600 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-01-08 09:58:16 -0800 |
| commit | 4accc8c8e2dbb1f5ff3d8836244a9423bd5e11a9 (patch) | |
| tree | c9053320139b9306539458f2f56df1e31c24a3db /include | |
| parent | c65d3b05d20c15f4421f853cbd2d41b91a12185e (diff) | |
| download | lwn-4accc8c8e2dbb1f5ff3d8836244a9423bd5e11a9.tar.gz lwn-4accc8c8e2dbb1f5ff3d8836244a9423bd5e11a9.zip | |
groups: Consolidate the setgroups permission checks
commit 7ff4d90b4c24a03666f296c3d4878cd39001e81e upstream.
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.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/cred.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/cred.h b/include/linux/cred.h index 04421e825365..6c58dd7cb9ac 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 int 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) \ |