Merge branch 'next' into for-linus

13 files changed, 616 insertions, 266 deletions

diff --git a/security/commoncap.c b/security/commoncap.c
index 69fc9952650..7cd61a5f520 100644
--- a/security/commoncap.c
+++ b/security/commoncap.c
@@ -45,26 +45,22 @@ EXPORT_SYMBOL(cap_netlink_recv);
 /**
  * cap_capable - Determine whether a task has a particular effective capability
  * @tsk: The task to query
+ * @cred: The credentials to use
  * @cap: The capability to check for
  * @audit: Whether to write an audit message or not
  *
  * Determine whether the nominated task has the specified capability amongst
  * its effective set, returning 0 if it does, -ve if it does not.
  *
- * NOTE WELL: cap_capable() cannot be used like the kernel's capable()
- * function.  That is, it has the reverse semantics: cap_capable() returns 0
- * when a task has a capability, but the kernel's capable() returns 1 for this
- * case.
+ * NOTE WELL: cap_has_capability() cannot be used like the kernel's capable()
+ * and has_capability() functions.  That is, it has the reverse semantics:
+ * cap_has_capability() returns 0 when a task has a capability, but the
+ * kernel's capable() and has_capability() returns 1 for this case.
  */
-int cap_capable(struct task_struct *tsk, int cap, int audit)
+int cap_capable(struct task_struct *tsk, const struct cred *cred, int cap,
+		int audit)
 {
-	__u32 cap_raised;
-
-	/* Derived from include/linux/sched.h:capable. */
-	rcu_read_lock();
-	cap_raised = cap_raised(__task_cred(tsk)->cap_effective, cap);
-	rcu_read_unlock();
-	return cap_raised ? 0 : -EPERM;
+	return cap_raised(cred->cap_effective, cap) ? 0 : -EPERM;
 }
 
 /**
@@ -160,7 +156,8 @@ static inline int cap_inh_is_capped(void)
 	/* they are so limited unless the current task has the CAP_SETPCAP
 	 * capability
 	 */
-	if (cap_capable(current, CAP_SETPCAP, SECURITY_CAP_AUDIT) == 0)
+	if (cap_capable(current, current_cred(), CAP_SETPCAP,
+			SECURITY_CAP_AUDIT) == 0)
 		return 0;
 #endif
 	return 1;
@@ -869,7 +866,8 @@ int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3,
 		     & (new->securebits ^ arg2))			/*[1]*/
 		    || ((new->securebits & SECURE_ALL_LOCKS & ~arg2))	/*[2]*/
 		    || (arg2 & ~(SECURE_ALL_LOCKS | SECURE_ALL_BITS))	/*[3]*/
-		    || (cap_capable(current, CAP_SETPCAP, SECURITY_CAP_AUDIT) != 0) /*[4]*/
+		    || (cap_capable(current, current_cred(), CAP_SETPCAP,
+				    SECURITY_CAP_AUDIT) != 0)		/*[4]*/
 			/*
 			 * [1] no changing of bits that are locked
 			 * [2] no unlocking of locks
@@ -950,7 +948,8 @@ int cap_vm_enough_memory(struct mm_struct *mm, long pages)
 {
 	int cap_sys_admin = 0;
 
-	if (cap_capable(current, CAP_SYS_ADMIN, SECURITY_CAP_NOAUDIT) == 0)
+	if (cap_capable(current, current_cred(), CAP_SYS_ADMIN,
+			SECURITY_CAP_NOAUDIT) == 0)
 		cap_sys_admin = 1;
 	return __vm_enough_memory(mm, pages, cap_sys_admin);
 }
diff --git a/security/keys/keyctl.c b/security/keys/keyctl.c
index 6688765bd8b..09796797d12 100644
--- a/security/keys/keyctl.c
+++ b/security/keys/keyctl.c
@@ -1294,7 +1294,7 @@ asmlinkage long sys_keyctl(int option, unsigned long arg2, unsigned long arg3,
 
 	case KEYCTL_GET_SECURITY:
 		return keyctl_get_security((key_serial_t) arg2,
-					   (char *) arg3,
+					   (char __user *) arg3,
 					   (size_t) arg4);
 
 	default:
diff --git a/security/security.c b/security/security.c
index 678d4d07b85..c3586c0d97e 100644
--- a/security/security.c
+++ b/security/security.c
@@ -154,14 +154,32 @@ int security_capset(struct cred *new, const struct cred *old,
 				    effective, inheritable, permitted);
 }
 
-int security_capable(struct task_struct *tsk, int cap)
+int security_capable(int cap)
 {
-	return security_ops->capable(tsk, cap, SECURITY_CAP_AUDIT);
+	return security_ops->capable(current, current_cred(), cap,
+				     SECURITY_CAP_AUDIT);
 }
 
-int security_capable_noaudit(struct task_struct *tsk, int cap)
+int security_real_capable(struct task_struct *tsk, int cap)
 {
-	return security_ops->capable(tsk, cap, SECURITY_CAP_NOAUDIT);
+	const struct cred *cred;
+	int ret;
+
+	cred = get_task_cred(tsk);
+	ret = security_ops->capable(tsk, cred, cap, SECURITY_CAP_AUDIT);
+	put_cred(cred);
+	return ret;
+}
+
+int security_real_capable_noaudit(struct task_struct *tsk, int cap)
+{
+	const struct cred *cred;
+	int ret;
+
+	cred = get_task_cred(tsk);
+	ret = security_ops->capable(tsk, cred, cap, SECURITY_CAP_NOAUDIT);
+	put_cred(cred);
+	return ret;
 }
 
 int security_acct(struct file *file)
diff --git a/security/selinux/Kconfig b/security/selinux/Kconfig
index 26301dd651d..bca1b74a4a2 100644
--- a/security/selinux/Kconfig
+++ b/security/selinux/Kconfig
@@ -94,33 +94,6 @@ config SECURITY_SELINUX_CHECKREQPROT_VALUE
 
 	  If you are unsure how to answer this question, answer 1.
 
-config SECURITY_SELINUX_ENABLE_SECMARK_DEFAULT
-	bool "NSA SELinux enable new secmark network controls by default"
-	depends on SECURITY_SELINUX
-	default n
-	help
-	  This option determines whether the new secmark-based network
-	  controls will be enabled by default.  If not, the old internal
-	  per-packet controls will be enabled by default, preserving
-	  old behavior.
-
-	  If you enable the new controls, you will need updated
-	  SELinux userspace libraries, tools and policy.  Typically,
-	  your distribution will provide these and enable the new controls
-	  in the kernel they also distribute.
-
-	  Note that this option can be overridden at boot with the
-	  selinux_compat_net parameter, and after boot via
-	  /selinux/compat_net.  See Documentation/kernel-parameters.txt
-	  for details on this parameter.
-
-	  If you enable the new network controls, you will likely
-	  also require the SECMARK and CONNSECMARK targets, as
-	  well as any conntrack helpers for protocols which you
-	  wish to control.
-
-	  If you are unsure what to do here, select N.
-
 config SECURITY_SELINUX_POLICYDB_VERSION_MAX
 	bool "NSA SELinux maximum supported policy format version"
 	depends on SECURITY_SELINUX
diff --git a/security/selinux/avc.c b/security/selinux/avc.c
index d43bd6baeea..eb41f43e277 100644
--- a/security/selinux/avc.c
+++ b/security/selinux/avc.c
@@ -53,18 +53,20 @@ static const char *class_to_string[] = {
 #undef S_
 
 static const struct av_inherit av_inherit[] = {
-#define S_(c, i, b) { c, common_##i##_perm_to_string, b },
+#define S_(c, i, b) {	.tclass = c,\
+			.common_pts = common_##i##_perm_to_string,\
+			.common_base =  b },
 #include "av_inherit.h"
 #undef S_
 };
 
 const struct selinux_class_perm selinux_class_perm = {
-	av_perm_to_string,
-	ARRAY_SIZE(av_perm_to_string),
-	class_to_string,
-	ARRAY_SIZE(class_to_string),
-	av_inherit,
-	ARRAY_SIZE(av_inherit)
+	.av_perm_to_string = av_perm_to_string,
+	.av_pts_len = ARRAY_SIZE(av_perm_to_string),
+	.class_to_string = class_to_string,
+	.cts_len = ARRAY_SIZE(class_to_string),
+	.av_inherit = av_inherit,
+	.av_inherit_len = ARRAY_SIZE(av_inherit)
 };
 
 #define AVC_CACHE_SLOTS			512
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index dbeaa783b2a..00815973d41 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -1433,12 +1433,13 @@ static int current_has_perm(const struct task_struct *tsk,
 
 /* Check whether a task is allowed to use a capability. */
 static int task_has_capability(struct task_struct *tsk,
+			       const struct cred *cred,
 			       int cap, int audit)
 {
 	struct avc_audit_data ad;
 	struct av_decision avd;
 	u16 sclass;
-	u32 sid = task_sid(tsk);
+	u32 sid = cred_sid(cred);
 	u32 av = CAP_TO_MASK(cap);
 	int rc;
 
@@ -1865,15 +1866,16 @@ static int selinux_capset(struct cred *new, const struct cred *old,
 	return cred_has_perm(old, new, PROCESS__SETCAP);
 }
 
-static int selinux_capable(struct task_struct *tsk, int cap, int audit)
+static int selinux_capable(struct task_struct *tsk, const struct cred *cred,
+			   int cap, int audit)
 {
 	int rc;
 
-	rc = secondary_ops->capable(tsk, cap, audit);
+	rc = secondary_ops->capable(tsk, cred, cap, audit);
 	if (rc)
 		return rc;
 
-	return task_has_capability(tsk, cap, audit);
+	return task_has_capability(tsk, cred, cap, audit);
 }
 
 static int selinux_sysctl_get_sid(ctl_table *table, u16 tclass, u32 *sid)
@@ -2037,7 +2039,8 @@ static int selinux_vm_enough_memory(struct mm_struct *mm, long pages)
 {
 	int rc, cap_sys_admin = 0;
 
-	rc = selinux_capable(current, CAP_SYS_ADMIN, SECURITY_CAP_NOAUDIT);
+	rc = selinux_capable(current, current_cred(), CAP_SYS_ADMIN,
+			     SECURITY_CAP_NOAUDIT);
 	if (rc == 0)
 		cap_sys_admin = 1;
 
@@ -2880,7 +2883,8 @@ static int selinux_inode_getsecurity(const struct inode *inode, const char *name
 	 * and lack of permission just means that we fall back to the
 	 * in-core context value, not a denial.
 	 */
-	error = selinux_capable(current, CAP_MAC_ADMIN, SECURITY_CAP_NOAUDIT);
+	error = selinux_capable(current, current_cred(), CAP_MAC_ADMIN,
+				SECURITY_CAP_NOAUDIT);
 	if (!error)
 		error = security_sid_to_context_force(isec->sid, &context,
 						      &size);
@@ -4185,7 +4189,7 @@ static int selinux_sock_rcv_skb_iptables_compat(struct sock *sk,
 static int selinux_sock_rcv_skb_compat(struct sock *sk, struct sk_buff *skb,
 				       u16 family)
 {
-	int err;
+	int err = 0;
 	struct sk_security_struct *sksec = sk->sk_security;
 	u32 peer_sid;
 	u32 sk_sid = sksec->sid;
@@ -4202,7 +4206,7 @@ static int selinux_sock_rcv_skb_compat(struct sock *sk, struct sk_buff *skb,
 	if (selinux_compat_net)
 		err = selinux_sock_rcv_skb_iptables_compat(sk, skb, &ad,
 							   family, addrp);
-	else
+	else if (selinux_secmark_enabled())
 		err = avc_has_perm(sk_sid, skb->secmark, SECCLASS_PACKET,
 				   PACKET__RECV, &ad);
 	if (err)
@@ -4705,7 +4709,7 @@ static unsigned int selinux_ip_postroute_compat(struct sk_buff *skb,
 		if (selinux_ip_postroute_iptables_compat(skb->sk, ifindex,
 							 &ad, family, addrp))
 			return NF_DROP;
-	} else {
+	} else if (selinux_secmark_enabled()) {
 		if (avc_has_perm(sksec->sid, skb->secmark,
 				 SECCLASS_PACKET, PACKET__SEND, &ad))
 			return NF_DROP;
diff --git a/security/selinux/include/avc_ss.h b/security/selinux/include/avc_ss.h
index c0d314d9f8e..bb1ec801bdf 100644
--- a/security/selinux/include/avc_ss.h
+++ b/security/selinux/include/avc_ss.h
@@ -17,16 +17,16 @@ struct av_perm_to_string {
 };
 
 struct av_inherit {
-	u16 tclass;
 	const char **common_pts;
 	u32 common_base;
+	u16 tclass;
 };
 
 struct selinux_class_perm {
 	const struct av_perm_to_string *av_perm_to_string;
 	u32 av_pts_len;
-	const char **class_to_string;
 	u32 cts_len;
+	const char **class_to_string;
 	const struct av_inherit *av_inherit;
 	u32 av_inherit_len;
 };
diff --git a/security/selinux/selinuxfs.c b/security/selinux/selinuxfs.c
index 8f612c8becb..01ec6d2c6b9 100644
--- a/security/selinux/selinuxfs.c
+++ b/security/selinux/selinuxfs.c
@@ -47,13 +47,7 @@ static char *policycap_names[] = {
 
 unsigned int selinux_checkreqprot = CONFIG_SECURITY_SELINUX_CHECKREQPROT_VALUE;
 
-#ifdef CONFIG_SECURITY_SELINUX_ENABLE_SECMARK_DEFAULT
-#define SELINUX_COMPAT_NET_VALUE 0
-#else
-#define SELINUX_COMPAT_NET_VALUE 1
-#endif
-
-int selinux_compat_net = SELINUX_COMPAT_NET_VALUE;
+int selinux_compat_net = 0;
 
 static int __init checkreqprot_setup(char *str)
 {
@@ -494,7 +488,13 @@ static ssize_t sel_write_compat_net(struct file *file, const char __user *buf,
 	if (sscanf(page, "%d", &new_value) != 1)
 		goto out;
 
-	selinux_compat_net = new_value ? 1 : 0;
+	if (new_value) {
+		printk(KERN_NOTICE
+		       "SELinux: compat_net is deprecated, please use secmark"
+		       " instead\n");
+		selinux_compat_net = 1;
+	} else
+		selinux_compat_net = 0;
 	length = count;
 out:
 	free_page((unsigned long) page);
diff --git a/security/selinux/ss/context.h b/security/selinux/ss/context.h
index 658c2bd17da..d9dd7a2f6a8 100644
--- a/security/selinux/ss/context.h
+++ b/security/selinux/ss/context.h
@@ -27,9 +27,9 @@ struct context {
 	u32 user;
 	u32 role;
 	u32 type;
+	u32 len;        /* length of string in bytes */
 	struct mls_range range;
 	char *str;	/* string representation if context cannot be mapped. */
-	u32 len;        /* length of string in bytes */
 };
 
 static inline void mls_context_init(struct context *c)
diff --git a/security/smack/smack.h b/security/smack/smack.h
index 31dce559595..b79582e4fbf 100644
--- a/security/smack/smack.h
+++ b/security/smack/smack.h
@@ -16,6 +16,7 @@
 #include <linux/capability.h>
 #include <linux/spinlock.h>
 #include <linux/security.h>
+#include <linux/in.h>
 #include <net/netlabel.h>
 
 /*
@@ -39,6 +40,7 @@ struct superblock_smack {
 struct socket_smack {
 	char		*smk_out;			/* outbound label */
 	char		*smk_in;			/* inbound label */
+	int		smk_labeled;			/* label scheme */
 	char		smk_packet[SMK_LABELLEN];	/* TCP peer label */
 };
 
@@ -80,6 +82,16 @@ struct smack_cipso {
 };
 
 /*
+ * An entry in the table identifying hosts.
+ */
+struct smk_netlbladdr {
+	struct smk_netlbladdr	*smk_next;
+	struct sockaddr_in	smk_host;	/* network address */
+	struct in_addr		smk_mask;	/* network mask */
+	char			*smk_label;	/* label */
+};
+
+/*
  * This is the repository for labels seen so that it is
  * not necessary to keep allocating tiny chuncks of memory
  * and so that they can be shared.
@@ -127,6 +139,20 @@ struct smack_known {
 #define XATTR_NAME_SMACKIPOUT	XATTR_SECURITY_PREFIX XATTR_SMACK_IPOUT
 
 /*
+ * How communications on this socket are treated.
+ * Usually it's determined by the underlying netlabel code
+ * but there are certain cases, including single label hosts
+ * and potentially single label interfaces for which the
+ * treatment can not be known in advance.
+ *
+ * The possibility of additional labeling schemes being
+ * introduced in the future exists as well.
+ */
+#define SMACK_UNLABELED_SOCKET	0
+#define SMACK_CIPSO_SOCKET	1
+
+/*
+ * smackfs magic number
  * smackfs macic number
  */
 #define SMACK_MAGIC	0x43415d53 /* "SMAC" */
@@ -141,6 +167,7 @@ struct smack_known {
  * CIPSO defaults.
  */
 #define SMACK_CIPSO_DOI_DEFAULT		3	/* Historical */
+#define SMACK_CIPSO_DOI_INVALID		-1	/* Not a DOI */
 #define SMACK_CIPSO_DIRECT_DEFAULT	250	/* Arbitrary */
 #define SMACK_CIPSO_MAXCATVAL		63	/* Bigger gets harder */
 #define SMACK_CIPSO_MAXLEVEL            255     /* CIPSO 2.2 standard */
@@ -176,7 +203,6 @@ u32 smack_to_secid(const char *);
  * Shared data.
  */
 extern int smack_cipso_direct;
-extern int smack_net_nltype;
 extern char *smack_net_ambient;
 extern char *smack_onlycap;
 
@@ -186,9 +212,10 @@ extern struct smack_known smack_known_hat;
 extern struct smack_known smack_known_huh;
 extern struct smack_known smack_known_invalid;
 extern struct smack_known smack_known_star;
-extern struct smack_known smack_known_unset;
+extern struct smack_known smack_known_web;
 
 extern struct smk_list_entry *smack_list;
+extern struct smk_netlbladdr *smack_netlbladdrs;
 extern struct security_operations smack_ops;
 
 /*
diff --git a/security/smack/smack_access.c b/security/smack/smack_access.c
index 247cec3b5a4..2e0b83e77ff 100644
--- a/security/smack/smack_access.c
+++ b/security/smack/smack_access.c
@@ -15,15 +15,8 @@
 #include <linux/sched.h>
 #include "smack.h"
 
-struct smack_known smack_known_unset = {
-	.smk_next	= NULL,
-	.smk_known	= "UNSET",
-	.smk_secid	= 1,
-	.smk_cipso	= NULL,
-};
-
 struct smack_known smack_known_huh = {
-	.smk_next	= &smack_known_unset,
+	.smk_next	= NULL,
 	.smk_known	= "?",
 	.smk_secid	= 2,
 	.smk_cipso	= NULL,
@@ -57,7 +50,14 @@ struct smack_known smack_known_invalid = {
 	.smk_cipso	= NULL,
 };
 
-struct smack_known *smack_known = &smack_known_invalid;
+struct smack_known smack_known_web = {
+	.smk_next	= &smack_known_invalid,
+	.smk_known	= "@",
+	.smk_secid	= 7,
+	.smk_cipso	= NULL,
+};
+
+struct smack_known *smack_known = &smack_known_web;
 
 /*
  * The initial value needs to be bigger than any of the
@@ -99,6 +99,16 @@ int smk_access(char *subject_label, char *object_label, int request)
 	    strcmp(subject_label, smack_known_star.smk_known) == 0)
 		return -EACCES;
 	/*
+	 * An internet object can be accessed by any subject.
+	 * Tasks cannot be assigned the internet label.
+	 * An internet subject can access any object.
+	 */
+	if (object_label == smack_known_web.smk_known ||
+	    subject_label == smack_known_web.smk_known ||
+	    strcmp(object_label, smack_known_web.smk_known) == 0 ||
+	    strcmp(subject_label, smack_known_web.smk_known) == 0)
+		return 0;
+	/*
 	 * A star object can be accessed by any subject.
 	 */
 	if (object_label == smack_known_star.smk_known ||
diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c
index 848212fd484..0278bc08304 100644
--- a/security/smack/smack_lsm.c
+++ b/security/smack/smack_lsm.c
@@ -1277,6 +1277,7 @@ static int smack_sk_alloc_security(struct sock *sk, int family, gfp_t gfp_flags)
 
 	ssp->smk_in = csp;
 	ssp->smk_out = csp;
+	ssp->smk_labeled = SMACK_CIPSO_SOCKET;
 	ssp->smk_packet[0] = '\0';
 
 	sk->sk_security = ssp;
@@ -1341,45 +1342,69 @@ static void smack_to_secattr(char *smack, struct netlbl_lsm_secattr *nlsp)
 	struct smack_cipso cipso;
 	int rc;
 
-	switch (smack_net_nltype) {
-	case NETLBL_NLTYPE_CIPSOV4:
-		nlsp->domain = smack;
-		nlsp->flags = NETLBL_SECATTR_DOMAIN | NETLBL_SECATTR_MLS_LVL;
+	nlsp->domain = smack;
+	nlsp->flags = NETLBL_SECATTR_DOMAIN | NETLBL_SECATTR_MLS_LVL;
 
-		rc = smack_to_cipso(smack, &cipso);
-		if (rc == 0) {
-			nlsp->attr.mls.lvl = cipso.smk_level;
-			smack_set_catset(cipso.smk_catset, nlsp);
-		} else {
-			nlsp->attr.mls.lvl = smack_cipso_direct;
-			smack_set_catset(smack, nlsp);
-		}
-		break;
-	default:
-		break;
+	rc = smack_to_cipso(smack, &cipso);
+	if (rc == 0) {
+		nlsp->attr.mls.lvl = cipso.smk_level;
+		smack_set_catset(cipso.smk_catset, nlsp);
+	} else {
+		nlsp->attr.mls.lvl = smack_cipso_direct;
+		smack_set_catset(smack, nlsp);
 	}
 }
 
 /**
  * smack_netlabel - Set the secattr on a socket
  * @sk: the socket
+ * @labeled: socket label scheme
  *
  * Convert the outbound smack value (smk_out) to a
  * secattr and attach it to the socket.
  *
  * Returns 0 on success or an error code
  */
-static int smack_netlabel(struct sock *sk)
+static int smack_netlabel(struct sock *sk, int labeled)
 {
 	struct socket_smack *ssp;
 	struct netlbl_lsm_secattr secattr;
-	int rc;
+	int rc = 0;
 
 	ssp = sk->sk_security;
-	netlbl_secattr_init(&secattr);
-	smack_to_secattr(ssp->smk_out, &secattr);
-	rc = netlbl_sock_setattr(sk, &secattr);
-	netlbl_secattr_destroy(&secattr);
+	/*
+	 * Usually the netlabel code will handle changing the
+	 * packet labeling based on the label.
+	 * The case of a single label host is different, because
+	 * a single label host should never get a labeled packet
+	 * even though the label is usually associated with a packet
+	 * label.
+	 */
+	local_bh_disable();
+	bh_lock_sock_nested(sk);
+
+	if (ssp->smk_out == smack_net_ambient ||
+	    labeled == SMACK_UNLABELED_SOCKET)
+		netlbl_sock_delattr(sk);
+	else {
+		netlbl_secattr_init(&secattr);
+		smack_to_secattr(ssp->smk_out, &secattr);
+		rc = netlbl_sock_setattr(sk, &secattr);
+		netlbl_secattr_destroy(&secattr);
+	}
+
+	bh_unlock_sock(sk);
+	local_bh_enable();
+	/*
+	 * Remember the label scheme used so that it is not
+	 * necessary to do the netlabel setting if it has not
+	 * changed the next time through.
+	 *
+	 * The -EDESTADDRREQ case is an indication that there's
+	 * a single level host involved.
+	 */
+	if (rc == 0)
+		ssp->smk_labeled = labeled;
 
 	return rc;
 }
@@ -1432,7 +1457,7 @@ static int smack_inode_setsecurity(struct inode *inode, const char *name,
 		ssp->smk_in = sp;
 	else if (strcmp(name, XATTR_SMACK_IPOUT) == 0) {
 		ssp->smk_out = sp;
-		rc = smack_netlabel(sock->sk);
+		rc = smack_netlabel(sock->sk, SMACK_CIPSO_SOCKET);
 		if (rc != 0)
 			printk(KERN_WARNING "Smack: \"%s\" netlbl error %d.\n",
 			       __func__, -rc);
@@ -1462,7 +1487,108 @@ static int smack_socket_post_create(struct socket *sock, int family,
 	/*
 	 * Set the outbound netlbl.
 	 */
-	return smack_netlabel(sock->sk);
+	return smack_netlabel(sock->sk, SMACK_CIPSO_SOCKET);
+}
+
+
+/**
+ * smack_host_label - check host based restrictions
+ * @sip: the object end
+ *
+ * looks for host based access restrictions
+ *
+ * This version will only be appropriate for really small
+ * sets of single label hosts. Because of the masking
+ * it cannot shortcut out on the first match. There are
+ * numerious ways to address the problem, but none of them
+ * have been applied here.
+ *
+ * Returns the label of the far end or NULL if it's not special.
+ */
+static char *smack_host_label(struct sockaddr_in *sip)
+{
+	struct smk_netlbladdr *snp;
+	char *bestlabel = NULL;
+	struct in_addr *siap = &sip->sin_addr;
+	struct in_addr *liap;
+	struct in_addr *miap;
+	struct in_addr bestmask;
+
+	if (siap->s_addr == 0)
+		return NULL;
+
+	bestmask.s_addr = 0;
+
+	for (snp = smack_netlbladdrs; snp != NULL; snp = snp->smk_next) {
+		liap = &snp->smk_host.sin_addr;
+		miap = &snp->smk_mask;
+		/*
+		 * If the addresses match after applying the list entry mask
+		 * the entry matches the address. If it doesn't move along to
+		 * the next entry.
+		 */
+		if ((liap->s_addr & miap->s_addr) !=
+		    (siap->s_addr & miap->s_addr))
+			continue;
+		/*
+		 * If the list entry mask identifies a single address
+		 * it can't get any more specific.
+		 */
+		if (miap->s_addr == 0xffffffff)
+			return snp->smk_label;
+		/*
+		 * If the list entry mask is less specific than the best
+		 * already found this entry is uninteresting.
+		 */
+		if ((miap->s_addr | bestmask.s_addr) == bestmask.s_addr)
+			continue;
+		/*
+		 * This is better than any entry found so far.
+		 */
+		bestmask.s_addr = miap->s_addr;
+		bestlabel = snp->smk_label;
+	}
+
+	return bestlabel;
+}
+
+/**
+ * smack_socket_connect - connect access check
+ * @sock: the socket
+ * @sap: the other end
+ * @addrlen: size of sap
+ *
+ * Verifies that a connection may be possible
+ *
+ * Returns 0 on success, and error code otherwise
+ */
+static int smack_socket_connect(struct socket *sock, struct sockaddr *sap,
+				int addrlen)
+{
+	struct socket_smack *ssp = sock->sk->sk_security;
+	char *hostsp;
+	int rc;
+
+	if (sock->sk == NULL || sock->sk->sk_family != PF_INET)
+		return 0;
+
+	if (addrlen < sizeof(struct sockaddr_in))
+		return -EINVAL;
+
+	hostsp = smack_host_label((struct sockaddr_in *)sap);
+	if (hostsp == NULL) {
+		if (ssp->smk_labeled != SMACK_CIPSO_SOCKET)
+			return smack_netlabel(sock->sk, SMACK_CIPSO_SOCKET);
+		return 0;
+	}
+
+	rc = smk_access(ssp->smk_out, hostsp, MAY_WRITE);
+	if (rc != 0)
+		return rc;
+
+	if (ssp->smk_labeled != SMACK_UNLABELED_SOCKET)
+		return smack_netlabel(sock->sk, SMACK_UNLABELED_SOCKET);
+	return 0;
 }
 
 /**
@@ -2101,8 +2227,14 @@ static int smack_setprocattr(struct task_struct *p, char *name,
 	if (newsmack == NULL)
 		return -EINVAL;
 
+	/*
+	 * No process is ever allowed the web ("@") label.
+	 */
+	if (newsmack == smack_known_web.smk_known)
+		return -EPERM;
+
 	new = prepare_creds();
-	if (!new)
+	if (new == NULL)
 		return -ENOMEM;
 	new->security = newsmack;
 	commit_creds(new);
@@ -2144,6 +2276,49 @@ static int smack_unix_may_send(struct socket *sock, struct socket *other)
 }
 
 /**
+ * smack_socket_sendmsg - Smack check based on destination host
+ * @sock: the socket
+ * @msghdr: the message
+ * @size: the size of the message
+ *
+ * Return 0 if the current subject can write to the destination
+ * host. This is only a question if the destination is a single
+ * label host.
+ */
+static int smack_socket_sendmsg(struct socket *sock, struct msghdr *msg,
+				int size)
+{
+	struct sockaddr_in *sip = (struct sockaddr_in *) msg->msg_name;
+	struct socket_smack *ssp = sock->sk->sk_security;
+	char *hostsp;
+	int rc;
+
+	/*
+	 * Perfectly reasonable for this to be NULL
+	 */
+	if (sip == NULL || sip->sin_family != PF_INET)
+		return 0;
+
+	hostsp = smack_host_label(sip);
+	if (hostsp == NULL) {
+		if (ssp->smk_labeled != SMACK_CIPSO_SOCKET)
+			return smack_netlabel(sock->sk, SMACK_CIPSO_SOCKET);
+		return 0;
+	}
+
+	rc = smk_access(ssp->smk_out, hostsp, MAY_WRITE);
+	if (rc != 0)
+		return rc;
+
+	if (ssp->smk_labeled != SMACK_UNLABELED_SOCKET)
+		return smack_netlabel(sock->sk, SMACK_UNLABELED_SOCKET);
+
+	return 0;
+
+}
+
+
+/**
  * smack_from_secattr - Convert a netlabel attr.mls.lvl/attr.mls.cat
  * 	pair to smack
  * @sap: netlabel secattr
@@ -2154,44 +2329,66 @@ static int smack_unix_may_send(struct socket *sock, struct socket *other)
 static void smack_from_secattr(struct netlbl_lsm_secattr *sap, char *sip)
 {
 	char smack[SMK_LABELLEN];
+	char *sp;
 	int pcat;
 
-	if ((sap->flags & NETLBL_SECATTR_MLS_LVL) == 0) {
+	if ((sap->flags & NETLBL_SECATTR_MLS_LVL) != 0) {
 		/*
+		 * Looks like a CIPSO packet.
 		 * If there are flags but no level netlabel isn't
 		 * behaving the way we expect it to.
 		 *
+		 * Get the categories, if any
 		 * Without guidance regarding the smack value
 		 * for the packet fall back on the network
 		 * ambient value.
 		 */
-		strncpy(sip, smack_net_ambient, SMK_MAXLEN);
+		memset(smack, '\0', SMK_LABELLEN);
+		if ((sap->flags & NETLBL_SECATTR_MLS_CAT) != 0)
+			for (pcat = -1;;) {
+				pcat = netlbl_secattr_catmap_walk(
+					sap->attr.mls.cat, pcat + 1);
+				if (pcat < 0)
+					break;
+				smack_catset_bit(pcat, smack);
+			}
+		/*
+		 * If it is CIPSO using smack direct mapping
+		 * we are already done. WeeHee.
+		 */
+		if (sap->attr.mls.lvl == smack_cipso_direct) {
+			memcpy(sip, smack, SMK_MAXLEN);
+			return;
+		}
+		/*
+		 * Look it up in the supplied table if it is not
+		 * a direct mapping.
+		 */
+		smack_from_cipso(sap->attr.mls.lvl, smack, sip);
 		return;
 	}
-	/*
-	 * Get the categories, if any
-	 */
-	memset(smack, '\0', SMK_LABELLEN);
-	if ((sap->flags & NETLBL_SECATTR_MLS_CAT) != 0)
-		for (pcat = -1;;) {
-			pcat = netlbl_secattr_catmap_walk(sap->attr.mls.cat,
-							  pcat + 1);
-			if (pcat < 0)
-				break;
-			smack_catset_bit(pcat, smack);
-		}
-	/*
-	 * If it is CIPSO using smack direct mapping
-	 * we are already done. WeeHee.
-	 */
-	if (sap->attr.mls.lvl == smack_cipso_direct) {
-		memcpy(sip, smack, SMK_MAXLEN);
+	if ((sap->flags & NETLBL_SECATTR_SECID) != 0) {
+		/*
+		 * Looks like a fallback, which gives us a secid.
+		 */
+		sp = smack_from_secid(sap->attr.secid);
+		/*
+		 * This has got to be a bug because it is
+		 * impossible to specify a fallback without
+		 * specifying the label, which will ensure
+		 * it has a secid, and the only way to get a
+		 * secid is from a fallback.
+		 */
+		BUG_ON(sp == NULL);
+		strncpy(sip, sp, SMK_MAXLEN);
 		return;
 	}
 	/*
-	 * Look it up in the supplied table if it is not a direct mapping.
+	 * Without guidance regarding the smack value
+	 * for the packet fall back on the network
+	 * ambient value.
 	 */
-	smack_from_cipso(sap->attr.mls.lvl, smack, sip);
+	strncpy(sip, smack_net_ambient, SMK_MAXLEN);
 	return;
 }
 
@@ -2207,6 +2404,7 @@ static int smack_socket_sock_rcv_skb(struct sock *sk, struct sk_buff *skb)
 	struct netlbl_lsm_secattr secattr;
 	struct socket_smack *ssp = sk->sk_security;
 	char smack[SMK_LABELLEN];
+	char *csp;
 	int rc;
 
 	if (sk->sk_family != PF_INET && sk->sk_family != PF_INET6)
@@ -2215,21 +2413,24 @@ static int smack_socket_sock_rcv_skb(struct sock *sk, struct sk_buff *skb)
 	/*
 	 * Translate what netlabel gave us.
 	 */
-	memset(smack, '\0', SMK_LABELLEN);
 	netlbl_secattr_init(&secattr);
+
 	rc = netlbl_skbuff_getattr(skb, sk->sk_family, &secattr);
-	if (rc == 0)
+	if (rc == 0) {
 		smack_from_secattr(&secattr, smack);
-	else
-		strncpy(smack, smack_net_ambient, SMK_MAXLEN);
+		csp = smack;
+	} else
+		csp = smack_net_ambient;
+
 	netlbl_secattr_destroy(&secattr);
+
 	/*
 	 * Receiving a packet requires that the other end
 	 * be able to write here. Read access is not required.
 	 * This is the simplist possible security model
 	 * for networking.
 	 */
-	rc = smk_access(smack, ssp->smk_in, MAY_WRITE);
+	rc = smk_access(csp, ssp->smk_in, MAY_WRITE);
 	if (rc != 0)
 		netlbl_skbuff_err(skb, rc, 0);
 	return rc;
@@ -2298,7 +2499,6 @@ static int smack_socket_getpeersec_dgram(struct socket *sock,
 	/*
 	 * Translate what netlabel gave us.
 	 */
-	memset(smack, '\0', SMK_LABELLEN);
 	netlbl_secattr_init(&secattr);
 	rc = netlbl_skbuff_getattr(skb, family, &secattr);
 	if (rc == 0)
@@ -2341,7 +2541,7 @@ static void smack_sock_graft(struct sock *sk, struct socket *parent)
 	ssp->smk_in = ssp->smk_out = current_security();
 	ssp->smk_packet[0] = '\0';
 
-	rc = smack_netlabel(sk);
+	rc = smack_netlabel(sk, SMACK_CIPSO_SOCKET);
 	if (rc != 0)
 		printk(KERN_WARNING "Smack: \"%s\" netlbl error %d.\n",
 		       __func__, -rc);
@@ -2367,7 +2567,6 @@ static int smack_inet_conn_request(struct sock *sk, struct sk_buff *skb,
 	if (skb == NULL)
 		return -EACCES;
 
-	memset(smack, '\0', SMK_LABELLEN);
 	netlbl_secattr_init(&skb_secattr);
 	rc = netlbl_skbuff_getattr(skb, sk->sk_family, &skb_secattr);
 	if (rc == 0)
@@ -2732,6 +2931,8 @@ struct security_operations smack_ops = {
 	.unix_may_send = 		smack_unix_may_send,
 
 	.socket_post_create = 		smack_socket_post_create,
+	.socket_connect =		smack_socket_connect,
+	.socket_sendmsg =		smack_socket_sendmsg,
 	.socket_sock_rcv_skb = 		smack_socket_sock_rcv_skb,
 	.socket_getpeersec_stream =	smack_socket_getpeersec_stream,
 	.socket_getpeersec_dgram =	smack_socket_getpeersec_dgram,
@@ -2783,7 +2984,6 @@ static __init int smack_init(void)
 	/*
 	 * Initialize locks
 	 */
-	spin_lock_init(&smack_known_unset.smk_cipsolock);
 	spin_lock_init(&smack_known_huh.smk_cipsolock);
 	spin_lock_init(&smack_known_hat.smk_cipsolock);
 	spin_lock_init(&smack_known_star.smk_cipsolock);
diff --git a/security/smack/smackfs.c b/security/smack/smackfs.c
index 247dc9ebbc7..bf107a389ac 100644
--- a/security/smack/smackfs.c
+++ b/security/smack/smackfs.c
@@ -20,6 +20,7 @@
 #include <linux/vmalloc.h>
 #include <linux/security.h>
 #include <linux/mutex.h>