From 8f6c5ffc8987f4f5b5a3e9d557d94bbf3a9bf216 Mon Sep 17 00:00:00 2001 From: Wang YanQing Date: Thu, 3 Apr 2014 14:48:26 -0700 Subject: [PATCH] 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 Cc: "Eric W. Biederman" Cc: Serge Hallyn Cc: Eric Paris Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/nfsd/auth.c | 5 +---- include/linux/cred.h | 2 +- kernel/groups.c | 14 ++------------ 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); }