linux-kernel - [PATCH v5 19/38] capability: Initialize as LSM_ORDER

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Date:   Tue, 11 Dec 2018 14:42:55 -0800
From:   Casey Schaufler <casey@...aufler-ca.com>
To:     jmorris@...ei.org, linux-security-module@...r.kernel.org,
        linux-kernel@...r.kernel.org, selinux@...r.kernel.org
Cc:     john.johansen@...onical.com, keescook@...omium.org,
        penguin-kernel@...ove.sakura.ne.jp, paul@...l-moore.com,
        linux-fsdevel@...r.kernel.org, sds@...ho.nsa.gov,
        adobriyan@...il.com, mic@...ikod.net, s.mesoraca16@...il.com,
        casey@...aufler-ca.com
Subject: [PATCH v5 19/38] capability: Initialize as LSM_ORDER_FIRST

From: Kees Cook <keescook@...omium.org>

This converts capabilities to use the new LSM_ORDER_FIRST position.

Signed-off-by: Kees Cook <keescook@...omium.org>
Reviewed-by: Casey Schaufler <casey@...aufler-ca.com>
---
 include/linux/lsm_hooks.h | 2 --
 security/commoncap.c      | 9 ++++++++-
 security/security.c       | 5 -----
 3 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/include/linux/lsm_hooks.h b/include/linux/lsm_hooks.h
index 83858e3df9e5..15fc49ee41a1 100644
--- a/include/linux/lsm_hooks.h
+++ b/include/linux/lsm_hooks.h
@@ -2092,6 +2092,4 @@ static inline void security_delete_hooks(struct security_hook_list *hooks,
 #define __lsm_ro_after_init	__ro_after_init
 #endif /* CONFIG_SECURITY_WRITABLE_HOOKS */
 
-extern void __init capability_add_hooks(void);
-
 #endif /* ! __LINUX_LSM_HOOKS_H */
diff --git a/security/commoncap.c b/security/commoncap.c
index 18a4fdf6f6eb..ec387535e597 100644
--- a/security/commoncap.c
+++ b/security/commoncap.c
@@ -1363,10 +1363,17 @@ struct security_hook_list capability_hooks[] __lsm_ro_after_init = {
 	LSM_HOOK_INIT(vm_enough_memory, cap_vm_enough_memory),
 };
 
-void __init capability_add_hooks(void)
+static int __init capability_init(void)
 {
 	security_add_hooks(capability_hooks, ARRAY_SIZE(capability_hooks),
 				"capability");
+	return 0;
 }
 
+DEFINE_LSM(capability) = {
+	.name = "capability",
+	.order = LSM_ORDER_FIRST,
+	.init = capability_init,
+};
+
 #endif /* CONFIG_SECURITY */
diff --git a/security/security.c b/security/security.c
index 701507174f40..eab64bdc60fb 100644
--- a/security/security.c
+++ b/security/security.c
@@ -277,11 +277,6 @@ int __init security_init(void)
 	     i++)
 		INIT_HLIST_HEAD(&list[i]);
 
-	/*
-	 * Load minor LSMs, with the capability module always first.
-	 */
-	capability_add_hooks();
-
 	/* Load LSMs in specified order. */
 	ordered_lsm_init();
 
-- 
2.14.5