From: John Johansen <john.johansen@canonical.com>
Date: Mon, 29 May 2017 18:45:29 +0000 (-0700)
Subject: apparmor: add fn to test if profile supports a given mediation class
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=b5b2557c0aeca35b34c558fd09ad6da67b9f3557;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

apparmor: add fn to test if profile supports a given mediation class

Signed-off-by: John Johansen <john.johansen@canonical.com>
---

diff --git a/security/apparmor/include/policy.h b/security/apparmor/include/policy.h
index 97bfbddef7b2..d93f475bfd8b 100644
--- a/security/apparmor/include/policy.h
+++ b/security/apparmor/include/policy.h
@@ -222,6 +222,16 @@ void __aa_profile_list_release(struct list_head *head);
 
 #define unconfined(X) ((X)->mode == APPARMOR_UNCONFINED)
 
+#define PROFILE_MEDIATES(P, T)  ((P)->policy.start[(T)])
+/* safe version of POLICY_MEDIATES for full range input */
+static inline unsigned int PROFILE_MEDIATES_SAFE(struct aa_profile *profile,
+						 unsigned char class)
+{
+	if (profile->policy.dfa)
+		return aa_dfa_match_len(profile->policy.dfa,
+					profile->policy.start[0], &class, 1);
+	return 0;
+}
 
 /**
  * aa_get_profile - increment refcount on profile @p