linux-kernel - [PATCH] smack: clean up smack

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Message-ID: <20211103073131.GA15173@raspberrypi>
Date:   Wed, 3 Nov 2021 07:31:31 +0000
From:   Austin Kim <austindh.kim@...il.com>
To:     casey@...aufler-ca.com, jmorris@...ei.org, serge@...lyn.com
Cc:     linux-security-module@...r.kernel.org,
        linux-kernel@...r.kernel.org, kernel-team@....com
Subject: [PATCH] smack: clean up smack_enabled to be more readable

The smack_enabled is only set to 0, 1. So changing type of smack_enabled 
as bool may make relevant routine be more readable.

Signed-off-by: Austin Kim <austindh.kim@...il.com>
---
 security/smack/smack.h           | 2 +-
 security/smack/smack_lsm.c       | 4 ++--
 security/smack/smack_netfilter.c | 2 +-
 security/smack/smackfs.c         | 2 +-
 4 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/security/smack/smack.h b/security/smack/smack.h
index 99c3422596ab..dc1726f5953f 100644
--- a/security/smack/smack.h
+++ b/security/smack/smack.h
@@ -302,7 +302,7 @@ int smack_populate_secattr(struct smack_known *skp);
 /*
  * Shared data.
  */
-extern int smack_enabled __initdata;
+extern bool smack_enabled __initdata;
 extern int smack_cipso_direct;
 extern int smack_cipso_mapped;
 extern struct smack_known *smack_net_ambient;
diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c
index efd35b07c7f8..ba3b46bd2ceb 100644
--- a/security/smack/smack_lsm.c
+++ b/security/smack/smack_lsm.c
@@ -56,7 +56,7 @@ static DEFINE_MUTEX(smack_ipv6_lock);
 static LIST_HEAD(smk_ipv6_port_list);
 #endif
 struct kmem_cache *smack_rule_cache;
-int smack_enabled __initdata;
+bool smack_enabled __initdata;
 
 #define A(s) {"smack"#s, sizeof("smack"#s) - 1, Opt_##s}
 static struct {
@@ -4953,7 +4953,7 @@ static __init int smack_init(void)
 	 * Register with LSM
 	 */
 	security_add_hooks(smack_hooks, ARRAY_SIZE(smack_hooks), "smack");
-	smack_enabled = 1;
+	smack_enabled = true;
 
 	pr_info("Smack:  Initializing.\n");
 #ifdef CONFIG_SECURITY_SMACK_NETFILTER
diff --git a/security/smack/smack_netfilter.c b/security/smack/smack_netfilter.c
index b945c1d3a743..82092d9387a3 100644
--- a/security/smack/smack_netfilter.c
+++ b/security/smack/smack_netfilter.c
@@ -70,7 +70,7 @@ static struct pernet_operations smack_net_ops = {
 
 static int __init smack_nf_ip_init(void)
 {
-	if (smack_enabled == 0)
+	if (smack_enabled == false)
 		return 0;
 
 	printk(KERN_DEBUG "Smack: Registering netfilter hooks\n");
diff --git a/security/smack/smackfs.c b/security/smack/smackfs.c
index 658eab05599e..7649ad8cc335 100644
--- a/security/smack/smackfs.c
+++ b/security/smack/smackfs.c
@@ -2993,7 +2993,7 @@ static int __init init_smk_fs(void)
 	int err;
 	int rc;
 
-	if (smack_enabled == 0)
+	if (smack_enabled == false)
 		return 0;
 
 	err = smk_init_sysfs();
-- 
2.20.1