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>

diff --git a/fs/nfsd/auth.c b/fs/nfsd/auth.c
index 06cddd5..2645be4 100644 (file)
--- 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 04421e8..f61d6c8 100644 (file)
--- 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 90cf1c3..451698f 100644 (file)
--- 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);
 }