linux-kernel - [PATCH 2/2] security/capability.h: cap

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Message-Id: <1447745124-8580-2-git-send-email-baiyaowei@cmss.chinamobile.com>
Date:	Tue, 17 Nov 2015 15:25:24 +0800
From:	Yaowei Bai <baiyaowei@...s.chinamobile.com>
To:	james.l.morris@...cle.com, serge@...lyn.com
Cc:	linux-security-module@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 2/2] security/capability.h: cap_issubset/isclear can be boolean

This patch makes cap_issubset/isclear return bool due to these
functions only using either one or zero as their return
value.

No functional change.

Signed-off-by: Yaowei Bai <baiyaowei@...s.chinamobile.com>
---
 include/linux/capability.h | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/include/linux/capability.h b/include/linux/capability.h
index b032003..f314275 100644
--- a/include/linux/capability.h
+++ b/include/linux/capability.h
@@ -145,24 +145,24 @@ static inline kernel_cap_t cap_invert(const kernel_cap_t c)
 	return dest;
 }
 
-static inline int cap_isclear(const kernel_cap_t a)
+static inline bool cap_isclear(const kernel_cap_t a)
 {
 	unsigned __capi;
 	CAP_FOR_EACH_U32(__capi) {
 		if (a.cap[__capi] != 0)
-			return 0;
+			return false;
 	}
-	return 1;
+	return true;
 }
 
 /*
  * Check if "a" is a subset of "set".
- * return 1 if ALL of the capabilities in "a" are also in "set"
- *	cap_issubset(0101, 1111) will return 1
- * return 0 if ANY of the capabilities in "a" are not in "set"
- *	cap_issubset(1111, 0101) will return 0
+ * return true if ALL of the capabilities in "a" are also in "set"
+ *	cap_issubset(0101, 1111) will return true
+ * return false if ANY of the capabilities in "a" are not in "set"
+ *	cap_issubset(1111, 0101) will return false
  */
-static inline int cap_issubset(const kernel_cap_t a, const kernel_cap_t set)
+static inline bool cap_issubset(const kernel_cap_t a, const kernel_cap_t set)
 {
 	kernel_cap_t dest;
 	dest = cap_drop(a, set);
-- 
1.9.1



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