Commit a4eecbae authored by Mateusz Guzik's avatar Mateusz Guzik Committed by Linus Torvalds
Browse files

capability: add cap_isidentical 



Signed-off-by: default avatarMateusz Guzik <mjguzik@gmail.com>
Reviewed-by: default avatarSerge Hallyn <serge@hallyn.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 10383068

include/linux/capability.h

+10 −0
Original line number Diff line number Diff line
@@ -157,6 +157,16 @@ static inline bool cap_isclear(const kernel_cap_t a) 
	return true;

}



static inline bool cap_isidentical(const kernel_cap_t a, const kernel_cap_t b)

{

	unsigned __capi;

	CAP_FOR_EACH_U32(__capi) {

		if (a.cap[__capi] != b.cap[__capi])

			return false;

	}

	return true;

}



/*

 * Check if "a" is a subset of "set".

 * return true if ALL of the capabilities in "a" are also in "set"