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@cmss.chinamobile.com>
Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Signed-off-by: James Morris <james.l.morris@oracle.com>

diff --git a/include/linux/capability.h b/include/linux/capability.h
index b032003..f314275 100644 (file)
--- 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);