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[v2,1/2] capability: add cap_isidentical

Message ID 20230116212105.1840362-1-mjguzik@gmail.com (mailing list archive)
State Handled Elsewhere
Delegated to: Paul Moore
Headers show
Series [v2,1/2] capability: add cap_isidentical | expand

Commit Message

Mateusz Guzik Jan. 16, 2023, 9:21 p.m. UTC 
Signed-off-by: Mateusz Guzik <mjguzik@gmail.com>
Reviewed-by: Serge Hallyn <serge@hallyn.com>
---
 include/linux/capability.h | 10 ++++++++++
 1 file changed, 10 insertions(+)
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Patch

diff --git a/include/linux/capability.h b/include/linux/capability.h
index 65efb74c3585..736a973c677a 100644
--- a/include/linux/capability.h
+++ b/include/linux/capability.h
@@ -156,6 +156,16 @@  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"