[PATCH 26/43] userns: Convert in_group_p and in_egroup_p to use kgid_t

"Eric W. Beiderman
2012-04-08T05:18:41Z

From: Eric W. Biederman <ebiederm@xmission.com>

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
---
include/linux/cred.h | 4 ++--
kernel/groups.c | 14 ++++++--------
2 files changed, 8 insertions(+), 10 deletions(-)

diff --git a/include/linux/cred.h b/include/linux/cred.h
index fac0579..917dc5a 100644
--- a/include/linux/cred.h
+++ b/include/linux/cred.h
@@ -73,8 +73,8 @@ extern int groups_search(const struct group_info *, kgid_t);
#define GROUP_AT(gi, i) \
((gi)->blocks[(i) / NGROUPS_PER_BLOCK][(i) % NGROUPS_PER_BLOCK])

-extern int in_group_p(gid_t);
-extern int in_egroup_p(gid_t);
+extern int in_group_p(kgid_t);
+extern int in_egroup_p(kgid_t);

/*
* The common credentials for a thread group
diff --git a/kernel/groups.c b/kernel/groups.c
index 84156f2..6b2588d 100644
--- a/kernel/groups.c
+++ b/kernel/groups.c
@@ -256,27 +256,25 @@ SYSCALL_DEFINE2(setgroups, int, gidsetsize, gid_t __user *, grouplist)
/*
* Check whether we're fsgid/egid or in the supplemental group..
*/
-int in_group_p(gid_t grp)
+int in_group_p(kgid_t grp)
{
const struct cred *cred = current_cred();
int retval = 1;

- if (grp != cred->fsgid)
- retval = groups_search(cred->group_info,
- make_kgid(cred->user_ns, grp));
+ if (!gid_eq(grp, cred->fsgid))
+ retval = groups_search(cred->group_info, grp);
return retval;
}

EXPORT_SYMBOL(in_group_p);

-int in_egroup_p(gid_t grp)
+int in_egroup_p(kgid_t grp)
{
const struct cred *cred = current_cred();
int retval = 1;

- if (grp != cred->egid)
- retval = groups_search(cred->group_info,
- make_kgid(cred->user_ns, grp));
+ if (!gid_eq(grp, cred->egid))
+ retval = groups_search(cred->group_info, grp);
return retval;
}

--
1.7.2.5