1 files changed, 243 insertions, 192 deletions

diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c
index 0fdbf04cc258..239773cdcdcf 100644
--- a/security/smack/smack_lsm.c
+++ b/security/smack/smack_lsm.c
@@ -107,23 +107,7 @@ static char *smk_bu_mess[] = {
 
 static void smk_bu_mode(int mode, char *s)
 {
-	int i = 0;
-
-	if (mode & MAY_READ)
-		s[i++] = 'r';
-	if (mode & MAY_WRITE)
-		s[i++] = 'w';
-	if (mode & MAY_EXEC)
-		s[i++] = 'x';
-	if (mode & MAY_APPEND)
-		s[i++] = 'a';
-	if (mode & MAY_TRANSMUTE)
-		s[i++] = 't';
-	if (mode & MAY_LOCK)
-		s[i++] = 'l';
-	if (i == 0)
-		s[i++] = '-';
-	s[i] = '\0';
+	smack_str_from_perm(s, mode);
 }
 #endif
 
@@ -994,57 +978,62 @@ static int smack_inode_init_security(struct inode *inode, struct inode *dir,
 				     struct xattr *xattrs, int *xattr_count)
 {
 	struct task_smack *tsp = smack_cred(current_cred());
+	struct inode_smack *issp = smack_inode(inode);
 	struct smack_known *skp = smk_of_task(tsp);
 	struct smack_known *isp = smk_of_inode(inode);
 	struct smack_known *dsp = smk_of_inode(dir);
 	struct xattr *xattr = lsm_get_xattr_slot(xattrs, xattr_count);
 	int may;
 
-	if (xattr) {
-		/*
-		 * If equal, transmuting already occurred in
-		 * smack_dentry_create_files_as(). No need to check again.
-		 */
-		if (tsp->smk_task != tsp->smk_transmuted) {
-			rcu_read_lock();
-			may = smk_access_entry(skp->smk_known, dsp->smk_known,
-					       &skp->smk_rules);
-			rcu_read_unlock();
-		}
+	/*
+	 * If equal, transmuting already occurred in
+	 * smack_dentry_create_files_as(). No need to check again.
+	 */
+	if (tsp->smk_task != tsp->smk_transmuted) {
+		rcu_read_lock();
+		may = smk_access_entry(skp->smk_known, dsp->smk_known,
+				       &skp->smk_rules);
+		rcu_read_unlock();
+	}
+
+	/*
+	 * In addition to having smk_task equal to smk_transmuted,
+	 * if the access rule allows transmutation and the directory
+	 * requests transmutation then by all means transmute.
+	 * Mark the inode as changed.
+	 */
+	if ((tsp->smk_task == tsp->smk_transmuted) ||
+	    (may > 0 && ((may & MAY_TRANSMUTE) != 0) &&
+	     smk_inode_transmutable(dir))) {
+		struct xattr *xattr_transmute;
 
 		/*
-		 * In addition to having smk_task equal to smk_transmuted,
-		 * if the access rule allows transmutation and the directory
-		 * requests transmutation then by all means transmute.
-		 * Mark the inode as changed.
+		 * The caller of smack_dentry_create_files_as()
+		 * should have overridden the current cred, so the
+		 * inode label was already set correctly in
+		 * smack_inode_alloc_security().
 		 */
-		if ((tsp->smk_task == tsp->smk_transmuted) ||
-		    (may > 0 && ((may & MAY_TRANSMUTE) != 0) &&
-		     smk_inode_transmutable(dir))) {
-			struct xattr *xattr_transmute;
+		if (tsp->smk_task != tsp->smk_transmuted)
+			isp = issp->smk_inode = dsp;
+
+		issp->smk_flags |= SMK_INODE_TRANSMUTE;
+		xattr_transmute = lsm_get_xattr_slot(xattrs,
+						     xattr_count);
+		if (xattr_transmute) {
+			xattr_transmute->value = kmemdup(TRANS_TRUE,
+							 TRANS_TRUE_SIZE,
+							 GFP_NOFS);
+			if (!xattr_transmute->value)
+				return -ENOMEM;
 
-			/*
-			 * The caller of smack_dentry_create_files_as()
-			 * should have overridden the current cred, so the
-			 * inode label was already set correctly in
-			 * smack_inode_alloc_security().
-			 */
-			if (tsp->smk_task != tsp->smk_transmuted)
-				isp = dsp;
-			xattr_transmute = lsm_get_xattr_slot(xattrs,
-							     xattr_count);
-			if (xattr_transmute) {
-				xattr_transmute->value = kmemdup(TRANS_TRUE,
-								 TRANS_TRUE_SIZE,
-								 GFP_NOFS);
-				if (!xattr_transmute->value)
-					return -ENOMEM;
-
-				xattr_transmute->value_len = TRANS_TRUE_SIZE;
-				xattr_transmute->name = XATTR_SMACK_TRANSMUTE;
-			}
+			xattr_transmute->value_len = TRANS_TRUE_SIZE;
+			xattr_transmute->name = XATTR_SMACK_TRANSMUTE;
 		}
+	}
 
+	issp->smk_flags |= SMK_INODE_INSTANT;
+
+	if (xattr) {
 		xattr->value = kstrdup(isp->smk_known, GFP_NOFS);
 		if (!xattr->value)
 			return -ENOMEM;
@@ -1233,12 +1222,14 @@ static int smack_inode_permission(struct inode *inode, int mask)
 
 /**
  * smack_inode_setattr - Smack check for setting attributes
+ * @idmap: idmap of the mount
  * @dentry: the object
  * @iattr: for the force flag
  *
  * Returns 0 if access is permitted, an error code otherwise
  */
-static int smack_inode_setattr(struct dentry *dentry, struct iattr *iattr)
+static int smack_inode_setattr(struct mnt_idmap *idmap, struct dentry *dentry,
+			       struct iattr *iattr)
 {
 	struct smk_audit_info ad;
 	int rc;
@@ -1276,6 +1267,33 @@ static int smack_inode_getattr(const struct path *path)
 }
 
 /**
+ * smack_inode_xattr_skipcap - Skip the xattr capability checks?
+ * @name: name of the xattr
+ *
+ * Returns 1 to indicate that Smack "owns" the access control rights to xattrs
+ * named @name; the LSM layer should avoid enforcing any traditional
+ * capability based access controls on this xattr.  Returns 0 to indicate that
+ * Smack does not "own" the access control rights to xattrs named @name and is
+ * deferring to the LSM layer for further access controls, including capability
+ * based controls.
+ */
+static int smack_inode_xattr_skipcap(const char *name)
+{
+	if (strncmp(name, XATTR_SMACK_SUFFIX, strlen(XATTR_SMACK_SUFFIX)))
+		return 0;
+
+	if (strcmp(name, XATTR_NAME_SMACK) == 0 ||
+	    strcmp(name, XATTR_NAME_SMACKIPIN) == 0 ||
+	    strcmp(name, XATTR_NAME_SMACKIPOUT) == 0 ||
+	    strcmp(name, XATTR_NAME_SMACKEXEC) == 0 ||
+	    strcmp(name, XATTR_NAME_SMACKMMAP) == 0 ||
+	    strcmp(name, XATTR_NAME_SMACKTRANSMUTE) == 0)
+		return 1;
+
+	return 0;
+}
+
+/**
  * smack_inode_setxattr - Smack check for setting xattrs
  * @idmap: idmap of the mount
  * @dentry: the object
@@ -1314,11 +1332,11 @@ static int smack_inode_setxattr(struct mnt_idmap *idmap,
 		check_star = 1;
 	} else if (strcmp(name, XATTR_NAME_SMACKTRANSMUTE) == 0) {
 		check_priv = 1;
-		if (size != TRANS_TRUE_SIZE ||
+		if (!S_ISDIR(d_backing_inode(dentry)->i_mode) ||
+		    size != TRANS_TRUE_SIZE ||
 		    strncmp(value, TRANS_TRUE, TRANS_TRUE_SIZE) != 0)
 			rc = -EINVAL;
-	} else
-		rc = cap_inode_setxattr(dentry, name, value, size, flags);
+	}
 
 	if (check_priv && !smack_privileged(CAP_MAC_ADMIN))
 		rc = -EPERM;
@@ -1427,8 +1445,7 @@ static int smack_inode_removexattr(struct mnt_idmap *idmap,
 	    strcmp(name, XATTR_NAME_SMACKMMAP) == 0) {
 		if (!smack_privileged(CAP_MAC_ADMIN))
 			rc = -EPERM;
-	} else
-		rc = cap_inode_removexattr(idmap, dentry, name);
+	}
 
 	if (rc != 0)
 		return rc;
@@ -1573,7 +1590,7 @@ static int smack_inode_getsecurity(struct mnt_idmap *idmap,
 		if (sock == NULL || sock->sk == NULL)
 			return -EOPNOTSUPP;
 
-		ssp = sock->sk->sk_security;
+		ssp = smack_sock(sock->sk);
 
 		if (strcmp(name, XATTR_SMACK_IPIN) == 0)
 			isp = ssp->smk_in;
@@ -1616,15 +1633,13 @@ static int smack_inode_listsecurity(struct inode *inode, char *buffer,
 }
 
 /**
- * smack_inode_getsecid - Extract inode's security id
+ * smack_inode_getlsmprop - Extract inode's security id
  * @inode: inode to extract the info from
- * @secid: where result will be saved
+ * @prop: where result will be saved
  */
-static void smack_inode_getsecid(struct inode *inode, u32 *secid)
+static void smack_inode_getlsmprop(struct inode *inode, struct lsm_prop *prop)
 {
-	struct smack_known *skp = smk_of_inode(inode);
-
-	*secid = skp->smk_secid;
+	prop->smack.skp = smk_of_inode(inode);
 }
 
 /*
@@ -1917,7 +1932,7 @@ static int smack_file_send_sigiotask(struct task_struct *tsk,
 	/*
 	 * struct fown_struct is never outside the context of a struct file
 	 */
-	file = container_of(fown, struct file, f_owner);
+	file = fown->file;
 
 	/* we don't log here as rc can be overriden */
 	blob = smack_file(file);
@@ -1961,7 +1976,7 @@ static int smack_file_receive(struct file *file)
 
 	if (inode->i_sb->s_magic == SOCKFS_MAGIC) {
 		sock = SOCKET_I(inode);
-		ssp = sock->sk->sk_security;
+		ssp = smack_sock(sock->sk);
 		tsp = smack_cred(current_cred());
 		/*
 		 * If the receiving process can't write to the
@@ -2095,12 +2110,7 @@ static void smack_cred_transfer(struct cred *new, const struct cred *old)
 	struct task_smack *old_tsp = smack_cred(old);
 	struct task_smack *new_tsp = smack_cred(new);
 
-	new_tsp->smk_task = old_tsp->smk_task;
-	new_tsp->smk_forked = old_tsp->smk_task;
-	mutex_init(&new_tsp->smk_rules_lock);
-	INIT_LIST_HEAD(&new_tsp->smk_rules);
-
-	/* cbs copy rule list */
+	init_task_smack(new_tsp, old_tsp->smk_task, old_tsp->smk_task);
 }
 
 /**
@@ -2121,6 +2131,21 @@ static void smack_cred_getsecid(const struct cred *cred, u32 *secid)
 }
 
 /**
+ * smack_cred_getlsmprop - get the Smack label for a creds structure
+ * @cred: the object creds
+ * @prop: where to put the data
+ *
+ * Sets the Smack part of the ref
+ */
+static void smack_cred_getlsmprop(const struct cred *cred,
+				  struct lsm_prop *prop)
+{
+	rcu_read_lock();
+	prop->smack.skp = smk_of_task(smack_cred(cred));
+	rcu_read_unlock();
+}
+
+/**
  * smack_kernel_act_as - Set the subjective context in a set of credentials
  * @new: points to the set of credentials to be modified.
  * @secid: specifies the security ID to be set
@@ -2211,30 +2236,27 @@ static int smack_task_getsid(struct task_struct *p)
 }
 
 /**
- * smack_current_getsecid_subj - get the subjective secid of the current task
- * @secid: where to put the result
+ * smack_current_getlsmprop_subj - get the subjective secid of the current task
+ * @prop: where to put the result
  *
  * Sets the secid to contain a u32 version of the task's subjective smack label.
  */
-static void smack_current_getsecid_subj(u32 *secid)
+static void smack_current_getlsmprop_subj(struct lsm_prop *prop)
 {
-	struct smack_known *skp = smk_of_current();
-
-	*secid = skp->smk_secid;
+	prop->smack.skp = smk_of_current();
 }
 
 /**
- * smack_task_getsecid_obj - get the objective secid of the task
+ * smack_task_getlsmprop_obj - get the objective data of the task
  * @p: the task
- * @secid: where to put the result
+ * @prop: where to put the result
  *
  * Sets the secid to contain a u32 version of the task's objective smack label.
  */
-static void smack_task_getsecid_obj(struct task_struct *p, u32 *secid)
+static void smack_task_getlsmprop_obj(struct task_struct *p,
+				      struct lsm_prop *prop)
 {
-	struct smack_known *skp = smk_of_task_struct_obj(p);
-
-	*secid = skp->smk_secid;
+	prop->smack.skp = smk_of_task_struct_obj(p);
 }
 
 /**
@@ -2381,11 +2403,7 @@ static void smack_task_to_inode(struct task_struct *p, struct inode *inode)
 static int smack_sk_alloc_security(struct sock *sk, int family, gfp_t gfp_flags)
 {
 	struct smack_known *skp = smk_of_current();
-	struct socket_smack *ssp;
-
-	ssp = kzalloc(sizeof(struct socket_smack), gfp_flags);
-	if (ssp == NULL)
-		return -ENOMEM;
+	struct socket_smack *ssp = smack_sock(sk);
 
 	/*
 	 * Sockets created by kernel threads receive web label.
@@ -2399,11 +2417,10 @@ static int smack_sk_alloc_security(struct sock *sk, int family, gfp_t gfp_flags)
 	}
 	ssp->smk_packet = NULL;
 
-	sk->sk_security = ssp;
-
 	return 0;
 }
 
+#ifdef SMACK_IPV6_PORT_LABELING
 /**
  * smack_sk_free_security - Free a socket blob
  * @sk: the socket
@@ -2412,7 +2429,6 @@ static int smack_sk_alloc_security(struct sock *sk, int family, gfp_t gfp_flags)
  */
 static void smack_sk_free_security(struct sock *sk)
 {
-#ifdef SMACK_IPV6_PORT_LABELING
 	struct smk_port_label *spp;
 
 	if (sk->sk_family == PF_INET6) {
@@ -2425,9 +2441,8 @@ static void smack_sk_free_security(struct sock *sk)
 		}
 		rcu_read_unlock();
 	}
-#endif
-	kfree(sk->sk_security);
 }
+#endif
 
 /**
  * smack_sk_clone_security - Copy security context
@@ -2438,8 +2453,8 @@ static void smack_sk_free_security(struct sock *sk)
  */
 static void smack_sk_clone_security(const struct sock *sk, struct sock *newsk)
 {
-	struct socket_smack *ssp_old = sk->sk_security;
-	struct socket_smack *ssp_new = newsk->sk_security;
+	struct socket_smack *ssp_old = smack_sock(sk);
+	struct socket_smack *ssp_new = smack_sock(newsk);
 
 	*ssp_new = *ssp_old;
 }
@@ -2555,14 +2570,15 @@ static struct smack_known *smack_ipv6host_label(struct sockaddr_in6 *sip)
  */
 static int smack_netlbl_add(struct sock *sk)
 {
-	struct socket_smack *ssp = sk->sk_security;
+	struct socket_smack *ssp = smack_sock(sk);
 	struct smack_known *skp = ssp->smk_out;
 	int rc;
 
 	local_bh_disable();
 	bh_lock_sock_nested(sk);
 
-	rc = netlbl_sock_setattr(sk, sk->sk_family, &skp->smk_netlabel);
+	rc = netlbl_sock_setattr(sk, sk->sk_family, &skp->smk_netlabel,
+				 netlbl_sk_lock_check(sk));
 	switch (rc) {
 	case 0:
 		ssp->smk_state = SMK_NETLBL_LABELED;
@@ -2587,7 +2603,7 @@ static int smack_netlbl_add(struct sock *sk)
  */
 static void smack_netlbl_delete(struct sock *sk)
 {
-	struct socket_smack *ssp = sk->sk_security;
+	struct socket_smack *ssp = smack_sock(sk);
 
 	/*
 	 * Take the label off the socket if one is set.
@@ -2619,7 +2635,7 @@ static int smk_ipv4_check(struct sock *sk, struct sockaddr_in *sap)
 	struct smack_known *skp;
 	int rc = 0;
 	struct smack_known *hkp;
-	struct socket_smack *ssp = sk->sk_security;
+	struct socket_smack *ssp = smack_sock(sk);
 	struct smk_audit_info ad;
 
 	rcu_read_lock();
@@ -2692,7 +2708,7 @@ static void smk_ipv6_port_label(struct socket *sock, struct sockaddr *address)
 {
 	struct sock *sk = sock->sk;
 	struct sockaddr_in6 *addr6;
-	struct socket_smack *ssp = sock->sk->sk_security;
+	struct socket_smack *ssp = smack_sock(sock->sk);
 	struct smk_port_label *spp;
 	unsigned short port = 0;
 
@@ -2780,7 +2796,7 @@ static int smk_ipv6_port_check(struct sock *sk, struct sockaddr_in6 *address,
 				int act)
 {
 	struct smk_port_label *spp;
-	struct socket_smack *ssp = sk->sk_security;
+	struct socket_smack *ssp = smack_sock(sk);
 	struct smack_known *skp = NULL;
 	unsigned short port;
 	struct smack_known *object;
@@ -2855,6 +2871,15 @@ static int smack_inode_setsecurity(struct inode *inode, const char *name,
 	if (value == NULL || size > SMK_LONGLABEL || size == 0)
 		return -EINVAL;
 
+	if (strcmp(name, XATTR_SMACK_TRANSMUTE) == 0) {
+		if (!S_ISDIR(inode->i_mode) || size != TRANS_TRUE_SIZE ||
+		    strncmp(value, TRANS_TRUE, TRANS_TRUE_SIZE) != 0)
+			return -EINVAL;
+
+		nsp->smk_flags |= SMK_INODE_TRANSMUTE;
+		return 0;
+	}
+
 	skp = smk_import_entry(value, size);
 	if (IS_ERR(skp))
 		return PTR_ERR(skp);
@@ -2874,7 +2899,7 @@ static int smack_inode_setsecurity(struct inode *inode, const char *name,
 	if (sock == NULL || sock->sk == NULL)
 		return -EOPNOTSUPP;
 
-	ssp = sock->sk->sk_security;
+	ssp = smack_sock(sock->sk);
 
 	if (strcmp(name, XATTR_SMACK_IPIN) == 0)
 		ssp->smk_in = skp;
@@ -2922,7 +2947,7 @@ static int smack_socket_post_create(struct socket *sock, int family,
 	 * Sockets created by kernel threads receive web label.
 	 */
 	if (unlikely(current->flags & PF_KTHREAD)) {
-		ssp = sock->sk->sk_security;
+		ssp = smack_sock(sock->sk);
 		ssp->smk_in = &smack_known_web;
 		ssp->smk_out = &smack_known_web;
 	}
@@ -2947,8 +2972,8 @@ static int smack_socket_post_create(struct socket *sock, int family,
 static int smack_socket_socketpair(struct socket *socka,
 		                   struct socket *sockb)
 {
-	struct socket_smack *asp = socka->sk->sk_security;
-	struct socket_smack *bsp = sockb->sk->sk_security;
+	struct socket_smack *asp = smack_sock(socka->sk);
+	struct socket_smack *bsp = smack_sock(sockb->sk);
 
 	asp->smk_packet = bsp->smk_out;
 	bsp->smk_packet = asp->smk_out;
@@ -3011,7 +3036,7 @@ static int smack_socket_connect(struct socket *sock, struct sockaddr *sap,
 		if (__is_defined(SMACK_IPV6_SECMARK_LABELING))
 			rsp = smack_ipv6host_label(sip);
 		if (rsp != NULL) {
-			struct socket_smack *ssp = sock->sk->sk_security;
+			struct socket_smack *ssp = smack_sock(sock->sk);
 
 			rc = smk_ipv6_check(ssp->smk_out, rsp, sip,
 					    SMK_CONNECTING);
@@ -3404,16 +3429,15 @@ static int smack_ipc_permission(struct kern_ipc_perm *ipp, short flag)
 }
 
 /**
- * smack_ipc_getsecid - Extract smack security id
+ * smack_ipc_getlsmprop - Extract smack security data
  * @ipp: the object permissions
- * @secid: where result will be saved
+ * @prop: where result will be saved
  */
-static void smack_ipc_getsecid(struct kern_ipc_perm *ipp, u32 *secid)
+static void smack_ipc_getlsmprop(struct kern_ipc_perm *ipp, struct lsm_prop *prop)
 {
-	struct smack_known **blob = smack_ipc(ipp);
-	struct smack_known *iskp = *blob;
+	struct smack_known **iskpp = smack_ipc(ipp);
 
-	*secid = iskp->smk_secid;
+	prop->smack.skp = *iskpp;
 }
 
 /**
@@ -3641,7 +3665,7 @@ static void smack_d_instantiate(struct dentry *opt_dentry, struct inode *inode)
  * There will only ever be one attribute.
  */
 static int smack_getselfattr(unsigned int attr, struct lsm_ctx __user *ctx,
-			     size_t *size, u32 flags)
+			     u32 *size, u32 flags)
 {
 	int rc;
 	struct smack_known *skp;
@@ -3762,7 +3786,7 @@ static int do_setattr(u64 attr, void *value, size_t size)
  * Returns 0 on success, an error code otherwise.
  */
 static int smack_setselfattr(unsigned int attr, struct lsm_ctx *ctx,
-			     size_t size, u32 flags)
+			     u32 size, u32 flags)
 {
 	int rc;
 
@@ -3806,9 +3830,9 @@ static int smack_unix_stream_connect(struct sock *sock,
 {
 	struct smack_known *skp;
 	struct smack_known *okp;
-	struct socket_smack *ssp = sock->sk_security;
-	struct socket_smack *osp = other->sk_security;
-	struct socket_smack *nsp = newsk->sk_security;
+	struct socket_smack *ssp = smack_sock(sock);
+	struct socket_smack *osp = smack_sock(other);
+	struct socket_smack *nsp = smack_sock(newsk);
 	struct smk_audit_info ad;
 	int rc = 0;
 #ifdef CONFIG_AUDIT
@@ -3833,12 +3857,18 @@ static int smack_unix_stream_connect(struct sock *sock,
 		}
 	}
 
-	/*
-	 * Cross reference the peer labels for SO_PEERSEC.
-	 */
 	if (rc == 0) {
+		/*
+		 * Cross reference the peer labels for SO_PEERSEC.
+		 */
 		nsp->smk_packet = ssp->smk_out;
 		ssp->smk_packet = osp->smk_out;
+
+		/*
+		 * new/child/established socket must inherit listening socket labels
+		 */
+		nsp->smk_out = osp->smk_out;
+		nsp->smk_in  = osp->smk_in;
 	}
 
 	return rc;
@@ -3854,8 +3884,8 @@ static int smack_unix_stream_connect(struct sock *sock,
  */
 static int smack_unix_may_send(struct socket *sock, struct socket *other)
 {
-	struct socket_smack *ssp = sock->sk->sk_security;
-	struct socket_smack *osp = other->sk->sk_security;
+	struct socket_smack *ssp = smack_sock(sock->sk);
+	struct socket_smack *osp = smack_sock(other->sk);
 	struct smk_audit_info ad;
 	int rc;
 
@@ -3892,7 +3922,7 @@ static int smack_socket_sendmsg(struct socket *sock, struct msghdr *msg,
 	struct sockaddr_in6 *sap = (struct sockaddr_in6 *) msg->msg_name;
 #endif
 #ifdef SMACK_IPV6_SECMARK_LABELING
-	struct socket_smack *ssp = sock->sk->sk_security;
+	struct socket_smack *ssp = smack_sock(sock->sk);
 	struct smack_known *rsp;
 #endif
 	int rc = 0;
@@ -4104,7 +4134,7 @@ static struct smack_known *smack_from_netlbl(const struct sock *sk, u16 family,
 	netlbl_secattr_init(&secattr);
 
 	if (sk)
-		ssp = sk->sk_security;
+		ssp = smack_sock(sk);
 
 	if (netlbl_skbuff_getattr(skb, family, &secattr) == 0) {
 		skp = smack_from_secattr(&secattr, ssp);
@@ -4126,7 +4156,7 @@ static struct smack_known *smack_from_netlbl(const struct sock *sk, u16 family,
  */
 static int smack_socket_sock_rcv_skb(struct sock *sk, struct sk_buff *skb)
 {
-	struct socket_smack *ssp = sk->sk_security;
+	struct socket_smack *ssp = smack_sock(sk);
 	struct smack_known *skp = NULL;
 	int rc = 0;
 	struct smk_audit_info ad;
@@ -4230,7 +4260,7 @@ static int smack_socket_getpeersec_stream(struct socket *sock,
 	u32 slen = 1;
 	int rc = 0;
 
-	ssp = sock->sk->sk_security;
+	ssp = smack_sock(sock->sk);
 	if (ssp->smk_packet != NULL) {
 		rcp = ssp->smk_packet->smk_known;
 		slen = strlen(rcp) + 1;
@@ -4280,7 +4310,7 @@ static int smack_socket_getpeersec_dgram(struct socket *sock,
 
 	switch (family) {
 	case PF_UNIX:
-		ssp = sock->sk->sk_security;
+		ssp = smack_sock(sock->sk);
 		s = ssp->smk_out->smk_secid;
 		break;
 	case PF_INET:
@@ -4329,7 +4359,7 @@ static void smack_sock_graft(struct sock *sk, struct socket *parent)
 	    (sk->sk_family != PF_INET && sk->sk_family != PF_INET6))
 		return;
 
-	ssp = sk->sk_security;
+	ssp = smack_sock(sk);
 	ssp->smk_in = skp;
 	ssp->smk_out = skp;
 	/* cssp->smk_packet is already set in smack_inet_csk_clone() */
@@ -4349,7 +4379,7 @@ static int smack_inet_conn_request(const struct sock *sk, struct sk_buff *skb,
 {
 	u16 family = sk->sk_family;
 	struct smack_known *skp;
-	struct socket_smack *ssp = sk->sk_security;
+	struct socket_smack *ssp = smack_sock(sk);
 	struct sockaddr_in addr;
 	struct iphdr *hdr;
 	struct smack_known *hskp;
@@ -4418,7 +4448,7 @@ static int smack_inet_conn_request(const struct sock *sk, struct sk_buff *skb,
 	rcu_read_unlock();
 
 	if (hskp == NULL)
-		rc = netlbl_req_setattr(req, &skp->smk_netlabel);
+		rc = netlbl_req_setattr(req, &ssp->smk_out->smk_netlabel);
 	else
 		netlbl_req_delattr(req);
 
@@ -4435,7 +4465,7 @@ static int smack_inet_conn_request(const struct sock *sk, struct sk_buff *skb,
 static void smack_inet_csk_clone(struct sock *sk,
 				 const struct request_sock *req)
 {
-	struct socket_smack *ssp = sk->sk_security;
+	struct socket_smack *ssp = smack_sock(sk);
 	struct smack_known *skp;
 
 	if (req->peer_secid != 0) {
@@ -4467,24 +4497,14 @@ static void smack_inet_csk_clone(struct sock *sk,
 static int smack_key_alloc(struct key *key, const struct cred *cred,
 			   unsigned long flags)
 {
+	struct smack_known **blob = smack_key(key);
 	struct smack_known *skp = smk_of_task(smack_cred(cred));
 
-	key->security = skp;
+	*blob = skp;
 	return 0;
 }
 
 /**
- * smack_key_free - Clear the key security blob
- * @key: the object
- *
- * Clear the blob pointer
- */
-static void smack_key_free(struct key *key)
-{
-	key->security = NULL;
-}
-
-/**
  * smack_key_permission - Smack access on a key
  * @key_ref: gets to the object
  * @cred: the credentials to use
@@ -4497,6 +4517,8 @@ static int smack_key_permission(key_ref_t key_ref,
 				const struct cred *cred,
 				enum key_need_perm need_perm)
 {
+	struct smack_known **blob;
+	struct smack_known *skp;
 	struct key *keyp;
 	struct smk_audit_info ad;
 	struct smack_known *tkp = smk_of_task(smack_cred(cred));
@@ -4534,7 +4556,9 @@ static int smack_key_permission(key_ref_t key_ref,
 	 * If the key hasn't been initialized give it access so that
 	 * it may do so.
 	 */
-	if (keyp->security == NULL)
+	blob = smack_key(keyp);
+	skp = *blob;
+	if (skp == NULL)
 		return 0;
 	/*
 	 * This should not occur
@@ -4550,8 +4574,8 @@ static int smack_key_permission(key_ref_t key_ref,
 	ad.a.u.key_struct.key = keyp->serial;
 	ad.a.u.key_struct.key_desc = keyp->description;
 #endif
-	rc = smk_access(tkp, keyp->security, request, &ad);
-	rc = smk_bu_note("key access", tkp, keyp->security, request, rc);
+	rc = smk_access(tkp, skp, request, &ad);
+	rc = smk_bu_note("key access", tkp, skp, request, rc);
 	return rc;
 }
 
@@ -4566,11 +4590,12 @@ static int smack_key_permission(key_ref_t key_ref,
  */
 static int smack_key_getsecurity(struct key *key, char **_buffer)
 {
-	struct smack_known *skp = key->security;
+	struct smack_known **blob = smack_key(key);
+	struct smack_known *skp = *blob;
 	size_t length;
 	char *copy;
 
-	if (key->security == NULL) {
+	if (skp == NULL) {
 		*_buffer = NULL;
 		return 0;
 	}
@@ -4597,16 +4622,9 @@ static int smack_watch_key(struct key *key)
 {
 	struct smk_audit_info ad;
 	struct smack_known *tkp = smk_of_current();
+	struct smack_known **blob = smack_key(key);
 	int rc;
 
-	if (key == NULL)
-		return -EINVAL;
-	/*
-	 * If the key hasn't been initialized give it access so that
-	 * it may do so.
-	 */
-	if (key->security == NULL)
-		return 0;
 	/*
 	 * This should not occur
 	 */
@@ -4621,8 +4639,8 @@ static int smack_watch_key(struct key *key)
 	ad.a.u.key_struct.key = key->serial;
 	ad.a.u.key_struct.key_desc = key->description;
 #endif
-	rc = smk_access(tkp, key->security, MAY_READ, &ad);
-	rc = smk_bu_note("key watch", tkp, key->security, MAY_READ, rc);
+	rc = smk_access(tkp, *blob, MAY_READ, &ad);
+	rc = smk_bu_note("key watch", tkp, *blob, MAY_READ, rc);
 	return rc;
 }
 #endif /* CONFIG_KEY_NOTIFICATIONS */
@@ -4680,11 +4698,13 @@ static int smack_post_notification(const struct cred *w_cred,
  * @op: required testing operator (=, !=, >, <, ...)
  * @rulestr: smack label to be audited
  * @vrule: pointer to save our own audit rule representation
+ * @gfp: type of the memory for the allocation
  *
  * Prepare to audit cases where (@field @op @rulestr) is true.
  * The label to be audited is created if necessay.
  */
-static int smack_audit_rule_init(u32 field, u32 op, char *rulestr, void **vrule)
+static int smack_audit_rule_init(u32 field, u32 op, char *rulestr, void **vrule,
+				 gfp_t gfp)
 {
 	struct smack_known *skp;
 	char **rule = (char **)vrule;
@@ -4730,7 +4750,7 @@ static int smack_audit_rule_known(struct audit_krule *krule)
 
 /**
  * smack_audit_rule_match - Audit given object ?
- * @secid: security id for identifying the object to test
+ * @prop: security id for identifying the object to test
  * @field: audit rule flags given from user-space
  * @op: required testing operator
  * @vrule: smack internal rule presentation
@@ -4738,9 +4758,10 @@ static int smack_audit_rule_known(struct audit_krule *krule)
  * The core Audit hook. It's used to take the decision of
  * whether to audit or not to audit a given object.
  */
-static int smack_audit_rule_match(u32 secid, u32 field, u32 op, void *vrule)
+static int smack_audit_rule_match(struct lsm_prop *prop, u32 field, u32 op,
+				  void *vrule)
 {
-	struct smack_known *skp;
+	struct smack_known *skp = prop->smack.skp;
 	char *rule = vrule;
 
 	if (unlikely(!rule)) {
@@ -4751,8 +4772,6 @@ static int smack_audit_rule_match(u32 secid, u32 field, u32 op, void *vrule)
 	if (field != AUDIT_SUBJ_USER && field != AUDIT_OBJ_USER)
 		return 0;
 
-	skp = smack_from_secid(secid);
-
 	/*
 	 * No need to do string comparisons. If a match occurs,
 	 * both pointers will point to the same smack_known
@@ -4782,23 +4801,48 @@ static int smack_ismaclabel(const char *name)
 	return (strcmp(name, XATTR_SMACK_SUFFIX) == 0);
 }
 
+/**
+ * smack_to_secctx - fill a lsm_context
+ * @skp: Smack label
+ * @cp: destination
+ *
+ * Fill the passed @cp and return the length of the string
+ */
+static int smack_to_secctx(struct smack_known *skp, struct lsm_context *cp)
+{
+	int len = strlen(skp->smk_known);
+
+	if (cp) {
+		cp->context = skp->smk_known;
+		cp->len = len;
+		cp->id = LSM_ID_SMACK;
+	}
+	return len;
+}
 
 /**
  * smack_secid_to_secctx - return the smack label for a secid
  * @secid: incoming integer
- * @secdata: destination
- * @seclen: how long it is
+ * @cp: destination
  *
  * Exists for networking code.
  */
-static int smack_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
+static int smack_secid_to_secctx(u32 secid, struct lsm_context *cp)
 {
-	struct smack_known *skp = smack_from_secid(secid);
+	return smack_to_secctx(smack_from_secid(secid), cp);
+}
 
-	if (secdata)
-		*secdata = skp->smk_known;
-	*seclen = strlen(skp->smk_known);
-	return 0;
+/**
+ * smack_lsmprop_to_secctx - return the smack label
+ * @prop: includes incoming Smack data
+ * @cp: destination
+ *
+ * Exists for audit code.
+ */
+static int smack_lsmprop_to_secctx(struct lsm_prop *prop,
+				   struct lsm_context *cp)
+{
+	return smack_to_secctx(prop->smack.skp, cp);
 }
 
 /**
@@ -4834,16 +4878,17 @@ static int smack_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
 
 static int smack_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
 {
-	return __vfs_setxattr_noperm(&nop_mnt_idmap, dentry, XATTR_NAME_SMACK,
-				     ctx, ctxlen, 0);
+	return __vfs_setxattr_locked(&nop_mnt_idmap, dentry, XATTR_NAME_SMACK,
+				     ctx, ctxlen, 0, NULL);
 }
 
-static int smack_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
+static int smack_inode_getsecctx(struct inode *inode, struct lsm_context *cp)
 {
 	struct smack_known *skp = smk_of_inode(inode);
 
-	*ctx = skp->smk_known;
-	*ctxlen = strlen(skp->smk_known);
+	cp->context = skp->smk_known;
+	cp->len = strlen(skp->smk_known);
+	cp->id = LSM_ID_SMACK;
 	return 0;
 }
 
@@ -4873,13 +4918,13 @@ static int smack_inode_copy_up(struct dentry *dentry, struct cred **new)
 	return 0;
 }
 
-static int smack_inode_copy_up_xattr(const char *name)
+static int smack_inode_copy_up_xattr(struct dentry *src, const char *name)
 {
 	/*
-	 * Return 1 if this is the smack access Smack attribute.
+	 * Return -ECANCELED if this is the smack access Smack attribute.
 	 */
-	if (strcmp(name, XATTR_NAME_SMACK) == 0)
-		return 1;
+	if (!strcmp(name, XATTR_NAME_SMACK))
+		return -ECANCELED;
 
 	return -EOPNOTSUPP;
 }
@@ -5002,7 +5047,9 @@ struct lsm_blob_sizes smack_blob_sizes __ro_after_init = {
 	.lbs_file = sizeof(struct smack_known *),
 	.lbs_inode = sizeof(struct inode_smack),
 	.lbs_ipc = sizeof(struct smack_known *),
+	.lbs_key = sizeof(struct smack_known *),
 	.lbs_msg_msg = sizeof(struct smack_known *),
+	.lbs_sock = sizeof(struct socket_smack),
 	.lbs_superblock = sizeof(struct superblock_smack),
 	.lbs_xattr_count = SMACK_INODE_INIT_XATTRS,
 };
@@ -5038,6 +5085,7 @@ static struct security_hook_list smack_hooks[] __ro_after_init = {
 	LSM_HOOK_INIT(inode_permission, smack_inode_permission),
 	LSM_HOOK_INIT(inode_setattr, smack_inode_setattr),
 	LSM_HOOK_INIT(inode_getattr, smack_inode_getattr),
+	LSM_HOOK_INIT(inode_xattr_skipcap, smack_inode_xattr_skipcap),
 	LSM_HOOK_INIT(inode_setxattr, smack_inode_setxattr),
 	LSM_HOOK_INIT(inode_post_setxattr, smack_inode_post_setxattr),
 	LSM_HOOK_INIT(inode_getxattr, smack_inode_getxattr),
@@ -5048,7 +5096,7 @@ static struct security_hook_list smack_hooks[] __ro_after_init = {
 	LSM_HOOK_INIT(inode_getsecurity, smack_inode_getsecurity),
 	LSM_HOOK_INIT(inode_setsecurity, smack_inode_setsecurity),
 	LSM_HOOK_INIT(inode_listsecurity, smack_inode_listsecurity),
-	LSM_HOOK_INIT(inode_getsecid, smack_inode_getsecid),
+	LSM_HOOK_INIT(inode_getlsmprop, smack_inode_getlsmprop),
 
 	LSM_HOOK_INIT(file_alloc_security, smack_file_alloc_security),
 	LSM_HOOK_INIT(file_ioctl, smack_file_ioctl),
@@ -5068,13 +5116,14 @@ static struct security_hook_list smack_hooks[] __ro_after_init = {
 	LSM_HOOK_INIT(cred_prepare, smack_cred_prepare),
 	LSM_HOOK_INIT(cred_transfer, smack_cred_transfer),
 	LSM_HOOK_INIT(cred_getsecid, smack_cred_getsecid),
+	LSM_HOOK_INIT(cred_getlsmprop, smack_cred_getlsmprop),
 	LSM_HOOK_INIT(kernel_act_as, smack_kernel_act_as),
 	LSM_HOOK_INIT(kernel_create_files_as, smack_kernel_create_files_as),
 	LSM_HOOK_INIT(task_setpgid, smack_task_setpgid),
 	LSM_HOOK_INIT(task_getpgid, smack_task_getpgid),
 	LSM_HOOK_INIT(task_getsid, smack_task_getsid),
-	LSM_HOOK_INIT(current_getsecid_subj, smack_current_getsecid_subj),
-	LSM_HOOK_INIT(task_getsecid_obj, smack_task_getsecid_obj),
+	LSM_HOOK_INIT(current_getlsmprop_subj, smack_current_getlsmprop_subj),
+	LSM_HOOK_INIT(task_getlsmprop_obj, smack_task_getlsmprop_obj),
 	LSM_HOOK_INIT(task_setnice, smack_task_setnice),
 	LSM_HOOK_INIT(task_setioprio, smack_task_setioprio),
 	LSM_HOOK_INIT(task_getioprio, smack_task_getioprio),
@@ -5085,7 +5134,7 @@ static struct security_hook_list smack_hooks[] __ro_after_init = {
 	LSM_HOOK_INIT(task_to_inode, smack_task_to_inode),
 
 	LSM_HOOK_INIT(ipc_permission, smack_ipc_permission),
-	LSM_HOOK_INIT(ipc_getsecid, smack_ipc_getsecid),
+	LSM_HOOK_INIT(ipc_getlsmprop, smack_ipc_getlsmprop),
 
 	LSM_HOOK_INIT(msg_msg_alloc_security, smack_msg_msg_alloc_security),
 
@@ -5126,7 +5175,9 @@ static struct security_hook_list smack_hooks[] __ro_after_init = {
 	LSM_HOOK_INIT(socket_getpeersec_stream, smack_socket_getpeersec_stream),
 	LSM_HOOK_INIT(socket_getpeersec_dgram, smack_socket_getpeersec_dgram),
 	LSM_HOOK_INIT(sk_alloc_security, smack_sk_alloc_security),
+#ifdef SMACK_IPV6_PORT_LABELING
 	LSM_HOOK_INIT(sk_free_security, smack_sk_free_security),
+#endif
 	LSM_HOOK_INIT(sk_clone_security, smack_sk_clone_security),
 	LSM_HOOK_INIT(sock_graft, smack_sock_graft),
 	LSM_HOOK_INIT(inet_conn_request, smack_inet_conn_request),
@@ -5135,7 +5186,6 @@ static struct security_hook_list smack_hooks[] __ro_after_init = {
  /* key management security hooks */
 #ifdef CONFIG_KEYS
 	LSM_HOOK_INIT(key_alloc, smack_key_alloc),
-	LSM_HOOK_INIT(key_free, smack_key_free),
 	LSM_HOOK_INIT(key_permission, smack_key_permission),
 	LSM_HOOK_INIT(key_getsecurity, smack_key_getsecurity),
 #ifdef CONFIG_KEY_NOTIFICATIONS
@@ -5156,6 +5206,7 @@ static struct security_hook_list smack_hooks[] __ro_after_init = {
 
 	LSM_HOOK_INIT(ismaclabel, smack_ismaclabel),
 	LSM_HOOK_INIT(secid_to_secctx, smack_secid_to_secctx),
+	LSM_HOOK_INIT(lsmprop_to_secctx, smack_lsmprop_to_secctx),
 	LSM_HOOK_INIT(secctx_to_secid, smack_secctx_to_secid),
 	LSM_HOOK_INIT(inode_notifysecctx, smack_inode_notifysecctx),
 	LSM_HOOK_INIT(inode_setsecctx, smack_inode_setsecctx),