Yama: Initialize as ordered LSM

This converts Yama from being a direct "minor" LSM into an ordered LSM. Signed-off-by: Kees Cook <[email protected]> Reviewed-by: Casey Schaufler <[email protected]>
sudhin-joseph · Jan 8, 2019 · d6aed64 · d6aed64
1 parent 70b62c2
commit d6aed64
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Showing 4 changed files with 8 additions and 8 deletions.
diff --git a/include/linux/lsm_hooks.h b/include/linux/lsm_hooks.h
@@ -2090,10 +2090,5 @@ static inline void security_delete_hooks(struct security_hook_list *hooks,
 #endif /* CONFIG_SECURITY_WRITABLE_HOOKS */
 
 extern void __init capability_add_hooks(void);
-#ifdef CONFIG_SECURITY_YAMA
-extern void __init yama_add_hooks(void);
-#else
-static inline void __init yama_add_hooks(void) { }
-#endif
 
 #endif /* ! __LINUX_LSM_HOOKS_H */
diff --git a/security/Kconfig b/security/Kconfig
@@ -241,7 +241,7 @@ source "security/integrity/Kconfig"
 
 config LSM
 	string "Ordered list of enabled LSMs"
-	default "loadpin,integrity,selinux,smack,tomoyo,apparmor"
+	default "yama,loadpin,integrity,selinux,smack,tomoyo,apparmor"
 	help
 	  A comma-separated list of LSMs, in initialization order.
 	  Any LSMs left off this list will be ignored. This can be

diff --git a/security/security.c b/security/security.c
@@ -274,7 +274,6 @@ int __init security_init(void)
 	 * Load minor LSMs, with the capability module always first.
 	 */
 	capability_add_hooks();
-	yama_add_hooks();
 
 	/* Load LSMs in specified order. */
 	ordered_lsm_init();

diff --git a/security/yama/yama_lsm.c b/security/yama/yama_lsm.c
@@ -477,9 +477,15 @@ static void __init yama_init_sysctl(void)
 static inline void yama_init_sysctl(void) { }
 #endif /* CONFIG_SYSCTL */
 
-void __init yama_add_hooks(void)
+static int __init yama_init(void)
 {
 	pr_info("Yama: becoming mindful.\n");
 	security_add_hooks(yama_hooks, ARRAY_SIZE(yama_hooks), "yama");
 	yama_init_sysctl();
+	return 0;
 }
+
+DEFINE_LSM(yama) = {
+	.name = "yama",
+	.init = yama_init,
+};