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Commit 8f6c5ffc authored by Wang YanQing's avatar Wang YanQing Committed by Linus Torvalds
Browse files

kernel/groups.c: remove return value of set_groups 



After commit 6307f8fe ("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: default avatarWang 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: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 6af9f7bf

fs/nfsd/auth.c

+1 −4
Original line number Diff line number Diff line
@@ -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;

}

include/linux/cred.h

+1 −1
Original line number Diff line number Diff line
@@ -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 */

kernel/groups.c

+2 −12
Original line number Diff line number Diff line
@@ -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);

}