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authorWang YanQing <udknight@gmail.com>2014-04-03 14:48:26 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-04-03 16:21:05 -0700
commit8f6c5ffc8987f4f5b5a3e9d557d94bbf3a9bf216 (patch)
tree79ea014021610d9a6057c070e1208542fd014e33
parent6af9f7bf3c399e0ab1eee048e13572c6d4e15fe9 (diff)
kernel/groups.c: remove return value of set_groups
After commit 6307f8fee295 ("security: remove dead hook task_setgroups"), set_groups will always return zero, so we could just remove return value of set_groups. This patch reduces code size, and simplfies code to use set_groups, because we don't need to check its return value any more. [akpm@linux-foundation.org: remove obsolete claims from set_groups() comment] Signed-off-by: Wang YanQing <udknight@gmail.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Serge Hallyn <serge.hallyn@canonical.com> Cc: Eric Paris <eparis@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--fs/nfsd/auth.c5
-rw-r--r--include/linux/cred.h2
-rw-r--r--kernel/groups.c14
3 files changed, 4 insertions, 17 deletions
diff --git a/fs/nfsd/auth.c b/fs/nfsd/auth.c
index 06cddd572264..2645be435e75 100644
--- a/fs/nfsd/auth.c
+++ b/fs/nfsd/auth.c
@@ -71,10 +71,8 @@ int nfsd_setuser(struct svc_rqst *rqstp, struct svc_export *exp)
if (gid_eq(new->fsgid, INVALID_GID))
new->fsgid = exp->ex_anon_gid;
- ret = set_groups(new, gi);
+ set_groups(new, gi);
put_group_info(gi);
- if (ret < 0)
- goto error;
if (!uid_eq(new->fsuid, GLOBAL_ROOT_UID))
new->cap_effective = cap_drop_nfsd_set(new->cap_effective);
@@ -89,7 +87,6 @@ int nfsd_setuser(struct svc_rqst *rqstp, struct svc_export *exp)
oom:
ret = -ENOMEM;
-error:
abort_creds(new);
return ret;
}
diff --git a/include/linux/cred.h b/include/linux/cred.h
index 04421e825365..f61d6c8f5ef3 100644
--- a/include/linux/cred.h
+++ b/include/linux/cred.h
@@ -66,7 +66,7 @@ extern struct group_info *groups_alloc(int);
extern struct group_info init_groups;
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 void set_groups(struct cred *, struct group_info *);
extern int groups_search(const struct group_info *, kgid_t);
/* access the groups "array" with this macro */
diff --git a/kernel/groups.c b/kernel/groups.c
index 90cf1c38c8ea..451698f86cfa 100644
--- a/kernel/groups.c
+++ b/kernel/groups.c
@@ -157,17 +157,13 @@ int groups_search(const struct group_info *group_info, kgid_t grp)
* set_groups - Change a group subscription in a set of credentials
* @new: The newly prepared set of credentials to alter
* @group_info: The group list to install
- *
- * Validate a group subscription and, if valid, insert it into a set
- * of credentials.
*/
-int set_groups(struct cred *new, struct group_info *group_info)
+void set_groups(struct cred *new, struct group_info *group_info)
{
put_group_info(new->group_info);
groups_sort(group_info);
get_group_info(group_info);
new->group_info = group_info;
- return 0;
}
EXPORT_SYMBOL(set_groups);
@@ -182,18 +178,12 @@ EXPORT_SYMBOL(set_groups);
int set_current_groups(struct group_info *group_info)
{
struct cred *new;
- int ret;
new = prepare_creds();
if (!new)
return -ENOMEM;
- ret = set_groups(new, group_info);
- if (ret < 0) {
- abort_creds(new);
- return ret;
- }
-
+ set_groups(new, group_info);
return commit_creds(new);
}

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