linux-kernel - [PATCH] kernel/groups: groups

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Message-Id: <1513319674-25837-1-git-send-email-tangzhongrui@cmss.chinamobile.com>
Date:   Fri, 15 Dec 2017 14:34:34 +0800
From:   tangzhongrui <tangzhongrui@...s.chinamobile.com>
To:     kstewart@...uxfoundation.org, linux@...musvillemoes.dk,
        tangzhongrui@...s.chinamobile.com
Cc:     linux-kernel@...r.kernel.org
Subject: [PATCH] kernel/groups: groups_search can be boolean

This patch makes groups_search return bool due to this
particular function only using either one or zero as its return
value.

No functional change.

Signed-off-by: tangzhongrui <tangzhongrui@...s.chinamobile.com>
---
 include/linux/cred.h | 2 +-
 kernel/groups.c      | 8 ++++----
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/include/linux/cred.h b/include/linux/cred.h
index 099058e..c3eb950 100644
--- a/include/linux/cred.h
+++ b/include/linux/cred.h
@@ -81,7 +81,7 @@ static inline int in_egroup_p(kgid_t grp)
 #endif
 extern int set_current_groups(struct group_info *);
 extern void set_groups(struct cred *, struct group_info *);
-extern int groups_search(const struct group_info *, kgid_t);
+extern bool groups_search(const struct group_info *, kgid_t);
 extern bool may_setgroups(void);
 
 /*
diff --git a/kernel/groups.c b/kernel/groups.c
index e357bc8..c1b5d86 100644
--- a/kernel/groups.c
+++ b/kernel/groups.c
@@ -93,12 +93,12 @@ static void groups_sort(struct group_info *group_info)
 }
 
 /* a simple bsearch */
-int groups_search(const struct group_info *group_info, kgid_t grp)
+bool groups_search(const struct group_info *group_info, kgid_t grp)
 {
 	unsigned int left, right;
 
 	if (!group_info)
-		return 0;
+		return false;
 
 	left = 0;
 	right = group_info->ngroups;
@@ -109,9 +109,9 @@ int groups_search(const struct group_info *group_info, kgid_t grp)
 		else if (gid_lt(grp, group_info->gid[mid]))
 			right = mid;
 		else
-			return 1;
+			return true;
 	}
-	return 0;
+	return false;
 }
 
 /**
-- 
1.8.3.1