[PATCH] selinux: require SECURITY_NETWORK

Make SELinux depend on SECURITY_NETWORK (which depends on SECURITY), as it
requires the socket hooks for proper operation even in the local case.

Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
Acked-by: James Morris <jmorris@namei.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

3 files changed, 5 insertions, 22 deletions

diff --git a/security/selinux/Kconfig b/security/selinux/Kconfig
index b59582b92283..502f78f13f5f 100644
--- a/security/selinux/Kconfig
+++ b/security/selinux/Kconfig
@@ -1,6 +1,6 @@
 config SECURITY_SELINUX
         bool "NSA SELinux Support"
-        depends on SECURITY && NET && INET
+        depends on SECURITY_NETWORK && NET && INET
         default n
         help
           This selects NSA Security-Enhanced Linux (SELinux).
diff --git a/security/selinux/Makefile b/security/selinux/Makefile
index 06d54d9d20a5..688c0a267b62 100644
--- a/security/selinux/Makefile
+++ b/security/selinux/Makefile
@@ -4,9 +4,7 @@
 
 obj-$(CONFIG_SECURITY_SELINUX) := selinux.o ss/
 
-selinux-y := avc.o hooks.o selinuxfs.o netlink.o nlmsgtab.o
-
-selinux-$(CONFIG_SECURITY_NETWORK) += netif.o
+selinux-y := avc.o hooks.o selinuxfs.o netlink.o nlmsgtab.o netif.o
 
 selinux-$(CONFIG_SECURITY_NETWORK_XFRM) += xfrm.o
 
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index 4ae834d89bce..b7773bf68efa 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -232,7 +232,6 @@ static void superblock_free_security(struct super_block *sb)
         kfree(sbsec);
 }
 
-#ifdef CONFIG_SECURITY_NETWORK
 static int sk_alloc_security(struct sock *sk, int family, gfp_t priority)
 {
         struct sk_security_struct *ssec;
@@ -261,7 +260,6 @@ static void sk_free_security(struct sock *sk)
         sk->sk_security = NULL;
         kfree(ssec);
 }
-#endif  /* CONFIG_SECURITY_NETWORK */
 
 /* The security server must be initialized before
    any labeling or access decisions can be provided. */
@@ -2736,8 +2734,6 @@ static void selinux_task_to_inode(struct task_struct *p,
         return;
 }
 
-#ifdef CONFIG_SECURITY_NETWORK
-
 /* Returns error only if unable to parse addresses */
 static int selinux_parse_skb_ipv4(struct sk_buff *skb, struct avc_audit_data *ad)
 {
@@ -3556,15 +3552,6 @@ static unsigned int selinux_ipv6_postroute_last(unsigned int hooknum,
 
 #endif  /* CONFIG_NETFILTER */
 
-#else
-
-static inline int selinux_nlmsg_perm(struct sock *sk, struct sk_buff *skb)
-{
-        return 0;
-}
-
-#endif  /* CONFIG_SECURITY_NETWORK */
-
 static int selinux_netlink_send(struct sock *sk, struct sk_buff *skb)
 {
         struct task_security_struct *tsec;
@@ -4340,7 +4327,6 @@ static struct security_operations selinux_ops = {
         .getprocattr =                  selinux_getprocattr,
         .setprocattr =                  selinux_setprocattr,
 
-#ifdef CONFIG_SECURITY_NETWORK
         .unix_stream_connect =          selinux_socket_unix_stream_connect,
         .unix_may_send =                selinux_socket_unix_may_send,
 
@@ -4362,7 +4348,6 @@ static struct security_operations selinux_ops = {
         .sk_alloc_security =            selinux_sk_alloc_security,
         .sk_free_security =             selinux_sk_free_security,
         .sk_getsid =                    selinux_sk_getsid_security,
-#endif
 
 #ifdef CONFIG_SECURITY_NETWORK_XFRM
         .xfrm_policy_alloc_security =   selinux_xfrm_policy_alloc,
@@ -4440,7 +4425,7 @@ next_sb:
    all processes and objects when they are created. */
 security_initcall(selinux_init);
 
-#if defined(CONFIG_SECURITY_NETWORK) && defined(CONFIG_NETFILTER)
+#if defined(CONFIG_NETFILTER)
 
 static struct nf_hook_ops selinux_ipv4_op = {
         .hook =         selinux_ipv4_postroute_last,
@@ -4501,13 +4486,13 @@ static void selinux_nf_ip_exit(void)
 }
 #endif
 
-#else /* CONFIG_SECURITY_NETWORK && CONFIG_NETFILTER */
+#else /* CONFIG_NETFILTER */
 
 #ifdef CONFIG_SECURITY_SELINUX_DISABLE
 #define selinux_nf_ip_exit()
 #endif
 
-#endif /* CONFIG_SECURITY_NETWORK && CONFIG_NETFILTER */
+#endif /* CONFIG_NETFILTER */
 
 #ifdef CONFIG_SECURITY_SELINUX_DISABLE
 int selinux_disable(void)