1 files changed, 243 insertions, 89 deletions

diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index 1e8cfc4c2ed6..417f7c994522 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -13,8 +13,8 @@
  *                                         Eric Paris <eparis@redhat.com>
  *  Copyright (C) 2004-2005 Trusted Computer Solutions, Inc.
  *                          <dgoeddel@trustedcs.com>
- *  Copyright (C) 2006, 2007 Hewlett-Packard Development Company, L.P.
- *              Paul Moore <paul.moore@hp.com>
+ *  Copyright (C) 2006, 2007, 2009 Hewlett-Packard Development Company, L.P.
+ *      Paul Moore <paul.moore@hp.com>
  *  Copyright (C) 2007 Hitachi Software Engineering Co., Ltd.
  *                     Yuichi Nakamura <ynakam@hitachisoft.jp>
  *
@@ -448,6 +448,10 @@ static int sb_finish_set_opts(struct super_block *sb)
             sbsec->behavior > ARRAY_SIZE(labeling_behaviors))
                 sbsec->flags &= ~SE_SBLABELSUPP;
 
+        /* Special handling for sysfs. Is genfs but also has setxattr handler*/
+        if (strncmp(sb->s_type->name, "sysfs", sizeof("sysfs")) == 0)
+                sbsec->flags |= SE_SBLABELSUPP;
+
         /* Initialize the root inode. */
         rc = inode_doinit_with_dentry(root_inode, root);
 
@@ -1479,14 +1483,14 @@ static int task_has_capability(struct task_struct *tsk,
                                const struct cred *cred,
                                int cap, int audit)
 {
-        struct avc_audit_data ad;
+        struct common_audit_data ad;
         struct av_decision avd;
         u16 sclass;
         u32 sid = cred_sid(cred);
         u32 av = CAP_TO_MASK(cap);
         int rc;
 
-        AVC_AUDIT_DATA_INIT(&ad, CAP);
+        COMMON_AUDIT_DATA_INIT(&ad, CAP);
         ad.tsk = tsk;
         ad.u.cap = cap;
 
@@ -1525,12 +1529,14 @@ static int task_has_system(struct task_struct *tsk,
 static int inode_has_perm(const struct cred *cred,
                           struct inode *inode,
                           u32 perms,
-                          struct avc_audit_data *adp)
+                          struct common_audit_data *adp)
 {
         struct inode_security_struct *isec;
-        struct avc_audit_data ad;
+        struct common_audit_data ad;
         u32 sid;
 
+        validate_creds(cred);
+
         if (unlikely(IS_PRIVATE(inode)))
                 return 0;
 
@@ -1539,7 +1545,7 @@ static int inode_has_perm(const struct cred *cred,
 
         if (!adp) {
                 adp = &ad;
-                AVC_AUDIT_DATA_INIT(&ad, FS);
+                COMMON_AUDIT_DATA_INIT(&ad, FS);
                 ad.u.fs.inode = inode;
         }
 
@@ -1555,9 +1561,9 @@ static inline int dentry_has_perm(const struct cred *cred,
                                   u32 av)
 {
         struct inode *inode = dentry->d_inode;
-        struct avc_audit_data ad;
+        struct common_audit_data ad;
 
-        AVC_AUDIT_DATA_INIT(&ad, FS);
+        COMMON_AUDIT_DATA_INIT(&ad, FS);
         ad.u.fs.path.mnt = mnt;
         ad.u.fs.path.dentry = dentry;
         return inode_has_perm(cred, inode, av, &ad);
@@ -1577,11 +1583,11 @@ static int file_has_perm(const struct cred *cred,
 {
         struct file_security_struct *fsec = file->f_security;
         struct inode *inode = file->f_path.dentry->d_inode;
-        struct avc_audit_data ad;
+        struct common_audit_data ad;
         u32 sid = cred_sid(cred);
         int rc;
 
-        AVC_AUDIT_DATA_INIT(&ad, FS);
+        COMMON_AUDIT_DATA_INIT(&ad, FS);
         ad.u.fs.path = file->f_path;
 
         if (sid != fsec->sid) {
@@ -1612,7 +1618,7 @@ static int may_create(struct inode *dir,
         struct inode_security_struct *dsec;
         struct superblock_security_struct *sbsec;
         u32 sid, newsid;
-        struct avc_audit_data ad;
+        struct common_audit_data ad;
         int rc;
 
         dsec = dir->i_security;
@@ -1621,7 +1627,7 @@ static int may_create(struct inode *dir,
         sid = tsec->sid;
         newsid = tsec->create_sid;
 
-        AVC_AUDIT_DATA_INIT(&ad, FS);
+        COMMON_AUDIT_DATA_INIT(&ad, FS);
         ad.u.fs.path.dentry = dentry;
 
         rc = avc_has_perm(sid, dsec->sid, SECCLASS_DIR,
@@ -1665,7 +1671,7 @@ static int may_link(struct inode *dir,
 
 {
         struct inode_security_struct *dsec, *isec;
-        struct avc_audit_data ad;
+        struct common_audit_data ad;
         u32 sid = current_sid();
         u32 av;
         int rc;
@@ -1673,7 +1679,7 @@ static int may_link(struct inode *dir,
         dsec = dir->i_security;
         isec = dentry->d_inode->i_security;
 
-        AVC_AUDIT_DATA_INIT(&ad, FS);
+        COMMON_AUDIT_DATA_INIT(&ad, FS);
         ad.u.fs.path.dentry = dentry;
 
         av = DIR__SEARCH;
@@ -1708,7 +1714,7 @@ static inline int may_rename(struct inode *old_dir,
                              struct dentry *new_dentry)
 {
         struct inode_security_struct *old_dsec, *new_dsec, *old_isec, *new_isec;
-        struct avc_audit_data ad;
+        struct common_audit_data ad;
         u32 sid = current_sid();
         u32 av;
         int old_is_dir, new_is_dir;
@@ -1719,7 +1725,7 @@ static inline int may_rename(struct inode *old_dir,
         old_is_dir = S_ISDIR(old_dentry->d_inode->i_mode);
         new_dsec = new_dir->i_security;
 
-        AVC_AUDIT_DATA_INIT(&ad, FS);
+        COMMON_AUDIT_DATA_INIT(&ad, FS);
 
         ad.u.fs.path.dentry = old_dentry;
         rc = avc_has_perm(sid, old_dsec->sid, SECCLASS_DIR,
@@ -1761,7 +1767,7 @@ static inline int may_rename(struct inode *old_dir,
 static int superblock_has_perm(const struct cred *cred,
                                struct super_block *sb,
                                u32 perms,
-                               struct avc_audit_data *ad)
+                               struct common_audit_data *ad)
 {
         struct superblock_security_struct *sbsec;
         u32 sid = cred_sid(cred);
@@ -1855,12 +1861,12 @@ static inline u32 open_file_to_av(struct file *file)
 
 /* Hook functions begin here. */
 
-static int selinux_ptrace_may_access(struct task_struct *child,
+static int selinux_ptrace_access_check(struct task_struct *child,
                                      unsigned int mode)
 {
         int rc;
 
-        rc = cap_ptrace_may_access(child, mode);
+        rc = cap_ptrace_access_check(child, mode);
         if (rc)
                 return rc;
 
@@ -2101,7 +2107,7 @@ static int selinux_bprm_set_creds(struct linux_binprm *bprm)
         const struct task_security_struct *old_tsec;
         struct task_security_struct *new_tsec;
         struct inode_security_struct *isec;
-        struct avc_audit_data ad;
+        struct common_audit_data ad;
         struct inode *inode = bprm->file->f_path.dentry->d_inode;
         int rc;
 
@@ -2139,7 +2145,7 @@ static int selinux_bprm_set_creds(struct linux_binprm *bprm)
                         return rc;
         }
 
-        AVC_AUDIT_DATA_INIT(&ad, FS);
+        COMMON_AUDIT_DATA_INIT(&ad, FS);
         ad.u.fs.path = bprm->file->f_path;
 
         if (bprm->file->f_path.mnt->mnt_flags & MNT_NOSUID)
@@ -2232,7 +2238,7 @@ extern struct dentry *selinux_null;
 static inline void flush_unauthorized_files(const struct cred *cred,
                                             struct files_struct *files)
 {
-        struct avc_audit_data ad;
+        struct common_audit_data ad;
         struct file *file, *devnull = NULL;
         struct tty_struct *tty;
         struct fdtable *fdt;
@@ -2266,7 +2272,7 @@ static inline void flush_unauthorized_files(const struct cred *cred,
 
         /* Revalidate access to inherited open files. */
 
-        AVC_AUDIT_DATA_INIT(&ad, FS);
+        COMMON_AUDIT_DATA_INIT(&ad, FS);
 
         spin_lock(&files->file_lock);
         for (;;) {
@@ -2515,7 +2521,7 @@ out:
 static int selinux_sb_kern_mount(struct super_block *sb, int flags, void *data)
 {
         const struct cred *cred = current_cred();
-        struct avc_audit_data ad;
+        struct common_audit_data ad;
         int rc;
 
         rc = superblock_doinit(sb, data);
@@ -2526,7 +2532,7 @@ static int selinux_sb_kern_mount(struct super_block *sb, int flags, void *data)
         if (flags & MS_KERNMOUNT)
                 return 0;
 
-        AVC_AUDIT_DATA_INIT(&ad, FS);
+        COMMON_AUDIT_DATA_INIT(&ad, FS);
         ad.u.fs.path.dentry = sb->s_root;
         return superblock_has_perm(cred, sb, FILESYSTEM__MOUNT, &ad);
 }
@@ -2534,9 +2540,9 @@ static int selinux_sb_kern_mount(struct super_block *sb, int flags, void *data)
 static int selinux_sb_statfs(struct dentry *dentry)
 {
         const struct cred *cred = current_cred();
-        struct avc_audit_data ad;
+        struct common_audit_data ad;
 
-        AVC_AUDIT_DATA_INIT(&ad, FS);
+        COMMON_AUDIT_DATA_INIT(&ad, FS);
         ad.u.fs.path.dentry = dentry->d_sb->s_root;
         return superblock_has_perm(cred, dentry->d_sb, FILESYSTEM__GETATTR, &ad);
 }
@@ -2711,12 +2717,18 @@ static int selinux_inode_permission(struct inode *inode, int mask)
 static int selinux_inode_setattr(struct dentry *dentry, struct iattr *iattr)
 {
         const struct cred *cred = current_cred();
+        unsigned int ia_valid = iattr->ia_valid;
+
+        /* ATTR_FORCE is just used for ATTR_KILL_S[UG]ID. */
+        if (ia_valid & ATTR_FORCE) {
+                ia_valid &= ~(ATTR_KILL_SUID | ATTR_KILL_SGID | ATTR_MODE |
+                              ATTR_FORCE);
+                if (!ia_valid)
+                        return 0;
+        }
 
-        if (iattr->ia_valid & ATTR_FORCE)
-                return 0;
-
-        if (iattr->ia_valid & (ATTR_MODE | ATTR_UID | ATTR_GID |
-                               ATTR_ATIME_SET | ATTR_MTIME_SET))
+        if (ia_valid & (ATTR_MODE | ATTR_UID | ATTR_GID |
+                        ATTR_ATIME_SET | ATTR_MTIME_SET | ATTR_TIMES_SET))
                 return dentry_has_perm(cred, NULL, dentry, FILE__SETATTR);
 
         return dentry_has_perm(cred, NULL, dentry, FILE__WRITE);
@@ -2756,7 +2768,7 @@ static int selinux_inode_setxattr(struct dentry *dentry, const char *name,
         struct inode *inode = dentry->d_inode;
         struct inode_security_struct *isec = inode->i_security;
         struct superblock_security_struct *sbsec;
-        struct avc_audit_data ad;
+        struct common_audit_data ad;
         u32 newsid, sid = current_sid();
         int rc = 0;
 
@@ -2770,7 +2782,7 @@ static int selinux_inode_setxattr(struct dentry *dentry, const char *name,
         if (!is_owner_or_cap(inode))
                 return -EPERM;
 
-        AVC_AUDIT_DATA_INIT(&ad, FS);
+        COMMON_AUDIT_DATA_INIT(&ad, FS);
         ad.u.fs.path.dentry = dentry;
 
         rc = avc_has_perm(sid, isec->sid, isec->sclass,
@@ -2915,6 +2927,7 @@ static int selinux_inode_setsecurity(struct inode *inode, const char *name,
                 return rc;
 
         isec->sid = newsid;
+        isec->initialized = 1;
         return 0;
 }
 
@@ -2939,11 +2952,6 @@ static int selinux_revalidate_file_permission(struct file *file, int mask)
         const struct cred *cred = current_cred();
         struct inode *inode = file->f_path.dentry->d_inode;
 
-        if (!mask) {
-                /* No permission to check.  Existence test. */
-                return 0;
-        }
-
         /* file_mask_to_av won't add FILE__WRITE if MAY_APPEND is set */
         if ((file->f_flags & O_APPEND) && (mask & MAY_WRITE))
                 mask |= MAY_APPEND;
@@ -2954,10 +2962,20 @@ static int selinux_revalidate_file_permission(struct file *file, int mask)
 
 static int selinux_file_permission(struct file *file, int mask)
 {
+        struct inode *inode = file->f_path.dentry->d_inode;
+        struct file_security_struct *fsec = file->f_security;
+        struct inode_security_struct *isec = inode->i_security;
+        u32 sid = current_sid();
+
         if (!mask)
                 /* No permission to check.  Existence test. */
                 return 0;
 
+        if (sid == fsec->sid && fsec->isid == isec->sid &&
+            fsec->pseqno == avc_policy_seqno())
+                /* No change since dentry_open check. */
+                return 0;
+
         return selinux_revalidate_file_permission(file, mask);
 }
 
@@ -3030,9 +3048,21 @@ static int selinux_file_mmap(struct file *file, unsigned long reqprot,
         int rc = 0;
         u32 sid = current_sid();
 
-        if (addr < mmap_min_addr)
+        /*
+         * notice that we are intentionally putting the SELinux check before
+         * the secondary cap_file_mmap check.  This is such a likely attempt
+         * at bad behaviour/exploit that we always want to get the AVC, even
+         * if DAC would have also denied the operation.
+         */
+        if (addr < CONFIG_LSM_MMAP_MIN_ADDR) {
                 rc = avc_has_perm(sid, sid, SECCLASS_MEMPROTECT,
                                   MEMPROTECT__MMAP_ZERO, NULL);
+                if (rc)
+                        return rc;
+        }
+
+        /* do DAC check on address space usage */
+        rc = cap_file_mmap(file, reqprot, prot, flags, addr, addr_only);
         if (rc || addr_only)
                 return rc;
 
@@ -3208,12 +3238,29 @@ static int selinux_task_create(unsigned long clone_flags)
 }
 
 /*
+ * allocate the SELinux part of blank credentials
+ */
+static int selinux_cred_alloc_blank(struct cred *cred, gfp_t gfp)
+{
+        struct task_security_struct *tsec;
+
+        tsec = kzalloc(sizeof(struct task_security_struct), gfp);
+        if (!tsec)
+                return -ENOMEM;
+
+        cred->security = tsec;
+        return 0;
+}
+
+/*
  * detach and free the LSM part of a set of credentials
  */
 static void selinux_cred_free(struct cred *cred)
 {
         struct task_security_struct *tsec = cred->security;
-        cred->security = NULL;
+
+        BUG_ON((unsigned long) cred->security < PAGE_SIZE);
+        cred->security = (void *) 0x7UL;
         kfree(tsec);
 }
 
@@ -3237,6 +3284,17 @@ static int selinux_cred_prepare(struct cred *new, const struct cred *old,
 }
 
 /*
+ * transfer the SELinux data to a blank set of creds
+ */
+static void selinux_cred_transfer(struct cred *new, const struct cred *old)
+{
+        const struct task_security_struct *old_tsec = old->security;
+        struct task_security_struct *tsec = new->security;
+
+        *tsec = *old_tsec;
+}
+
+/*
  * set the security data for a kernel service
  * - all the creation contexts are set to unlabelled
  */
@@ -3280,6 +3338,11 @@ static int selinux_kernel_create_files_as(struct cred *new, struct inode *inode)
         return 0;
 }
 
+static int selinux_kernel_module_request(void)
+{
+        return task_has_system(current, SYSTEM__MODULE_REQUEST);
+}
+
 static int selinux_task_setpgid(struct task_struct *p, pid_t pgid)
 {
         return current_has_perm(p, PROCESS__SETPGID);
@@ -3397,7 +3460,7 @@ static void selinux_task_to_inode(struct task_struct *p,
 
 /* Returns error only if unable to parse addresses */
 static int selinux_parse_skb_ipv4(struct sk_buff *skb,
-                        struct avc_audit_data *ad, u8 *proto)
+                        struct common_audit_data *ad, u8 *proto)
 {
         int offset, ihlen, ret = -EINVAL;
         struct iphdr _iph, *ih;
@@ -3478,7 +3541,7 @@ out:
 
 /* Returns error only if unable to parse addresses */
 static int selinux_parse_skb_ipv6(struct sk_buff *skb,
-                        struct avc_audit_data *ad, u8 *proto)
+                        struct common_audit_data *ad, u8 *proto)
 {
         u8 nexthdr;
         int ret = -EINVAL, offset;
@@ -3549,7 +3612,7 @@ out:
 
 #endif /* IPV6 */
 
-static int selinux_parse_skb(struct sk_buff *skb, struct avc_audit_data *ad,
+static int selinux_parse_skb(struct sk_buff *skb, struct common_audit_data *ad,
                              char **_addrp, int src, u8 *proto)
 {
         char *addrp;
@@ -3631,7 +3694,7 @@ static int socket_has_perm(struct task_struct *task, struct socket *sock,
                            u32 perms)
 {
         struct inode_security_struct *isec;
-        struct avc_audit_data ad;
+        struct common_audit_data ad;
         u32 sid;
         int err = 0;
 
@@ -3641,7 +3704,7 @@ static int socket_has_perm(struct task_struct *task, struct socket *sock,
                 goto out;
         sid = task_sid(task);
 
-        AVC_AUDIT_DATA_INIT(&ad, NET);
+        COMMON_AUDIT_DATA_INIT(&ad, NET);
         ad.u.net.sk = sock->sk;
         err = avc_has_perm(sid, isec->sid, isec->sclass, perms, &ad);
 
@@ -3728,7 +3791,7 @@ static int selinux_socket_bind(struct socket *sock, struct sockaddr *address, in
         if (family == PF_INET || family == PF_INET6) {
                 char *addrp;
                 struct inode_security_struct *isec;
-                struct avc_audit_data ad;
+                struct common_audit_data ad;
                 struct sockaddr_in *addr4 = NULL;
                 struct sockaddr_in6 *addr6 = NULL;
                 unsigned short snum;
@@ -3757,7 +3820,7 @@ static int selinux_socket_bind(struct socket *sock, struct sockaddr *address, in
                                                       snum, &sid);
                                 if (err)
                                         goto out;
-                                AVC_AUDIT_DATA_INIT(&ad, NET);
+                                COMMON_AUDIT_DATA_INIT(&ad, NET);
                                 ad.u.net.sport = htons(snum);
                                 ad.u.net.family = family;
                                 err = avc_has_perm(isec->sid, sid,
@@ -3790,7 +3853,7 @@ static int selinux_socket_bind(struct socket *sock, struct sockaddr *address, in
                 if (err)
                         goto out;
 
-                AVC_AUDIT_DATA_INIT(&ad, NET);
+                COMMON_AUDIT_DATA_INIT(&ad, NET);
                 ad.u.net.sport = htons(snum);
                 ad.u.net.family = family;
 
@@ -3824,7 +3887,7 @@ static int selinux_socket_connect(struct socket *sock, struct sockaddr *address,
         isec = SOCK_INODE(sock)->i_security;
         if (isec->sclass == SECCLASS_TCP_SOCKET ||
             isec->sclass == SECCLASS_DCCP_SOCKET) {
-                struct avc_audit_data ad;
+                struct common_audit_data ad;
                 struct sockaddr_in *addr4 = NULL;
                 struct sockaddr_in6 *addr6 = NULL;
                 unsigned short snum;
@@ -3849,7 +3912,7 @@ static int selinux_socket_connect(struct socket *sock, struct sockaddr *address,
                 perm = (isec->sclass == SECCLASS_TCP_SOCKET) ?
                        TCP_SOCKET__NAME_CONNECT : DCCP_SOCKET__NAME_CONNECT;
 
-                AVC_AUDIT_DATA_INIT(&ad, NET);
+                COMMON_AUDIT_DATA_INIT(&ad, NET);
                 ad.u.net.dport = htons(snum);
                 ad.u.net.family = sk->sk_family;
                 err = avc_has_perm(isec->sid, sid, isec->sclass, perm, &ad);
@@ -3939,13 +4002,13 @@ static int selinux_socket_unix_stream_connect(struct socket *sock,
         struct sk_security_struct *ssec;
         struct inode_security_struct *isec;
         struct inode_security_struct *other_isec;
-        struct avc_audit_data ad;
+        struct common_audit_data ad;
         int err;
 
         isec = SOCK_INODE(sock)->i_security;
         other_isec = SOCK_INODE(other)->i_security;
 
-        AVC_AUDIT_DATA_INIT(&ad, NET);
+        COMMON_AUDIT_DATA_INIT(&ad, NET);
         ad.u.net.sk = other->sk;
 
         err = avc_has_perm(isec->sid, other_isec->sid,
@@ -3971,13 +4034,13 @@ static int selinux_socket_unix_may_send(struct socket *sock,
 {
         struct inode_security_struct *isec;
         struct inode_security_struct *other_isec;
-        struct avc_audit_data ad;
+        struct common_audit_data ad;
         int err;
 
         isec = SOCK_INODE(sock)->i_security;
         other_isec = SOCK_INODE(other)->i_security;
 
-        AVC_AUDIT_DATA_INIT(&ad, NET);
+        COMMON_AUDIT_DATA_INIT(&ad, NET);
         ad.u.net.sk = other->sk;
 
         err = avc_has_perm(isec->sid, other_isec->sid,
@@ -3990,7 +4053,7 @@ static int selinux_socket_unix_may_send(struct socket *sock,
 
 static int selinux_inet_sys_rcv_skb(int ifindex, char *addrp, u16 family,
                                     u32 peer_sid,
-                                    struct avc_audit_data *ad)
+                                    struct common_audit_data *ad)
 {
         int err;
         u32 if_sid;
@@ -4018,10 +4081,10 @@ static int selinux_sock_rcv_skb_compat(struct sock *sk, struct sk_buff *skb,
         struct sk_security_struct *sksec = sk->sk_security;
         u32 peer_sid;
         u32 sk_sid = sksec->sid;
-        struct avc_audit_data ad;
+        struct common_audit_data ad;
         char *addrp;
 
-        AVC_AUDIT_DATA_INIT(&ad, NET);
+        COMMON_AUDIT_DATA_INIT(&ad, NET);
         ad.u.net.netif = skb->iif;
         ad.u.net.family = family;
         err = selinux_parse_skb(skb, &ad, &addrp, 1, NULL);
@@ -4059,7 +4122,7 @@ static int selinux_socket_sock_rcv_skb(struct sock *sk, struct sk_buff *skb)
         struct sk_security_struct *sksec = sk->sk_security;
         u16 family = sk->sk_family;
         u32 sk_sid = sksec->sid;
-        struct avc_audit_data ad;
+        struct common_audit_data ad;
         char *addrp;
         u8 secmark_active;
         u8 peerlbl_active;
@@ -4083,7 +4146,7 @@ static int selinux_socket_sock_rcv_skb(struct sock *sk, struct sk_buff *skb)
         if (!secmark_active && !peerlbl_active)
                 return 0;
 
-        AVC_AUDIT_DATA_INIT(&ad, NET);
+        COMMON_AUDIT_DATA_INIT(&ad, NET);
         ad.u.net.netif = skb->iif;
         ad.u.net.family = family;
         err = selinux_parse_skb(skb, &ad, &addrp, 1, NULL);
@@ -4297,6 +4360,59 @@ static void selinux_req_classify_flow(const struct request_sock *req,
         fl->secid = req->secid;
 }
 
+static int selinux_tun_dev_create(void)
+{
+        u32 sid = current_sid();
+
+        /* we aren't taking into account the "sockcreate" SID since the socket
+         * that is being created here is not a socket in the traditional sense,
+         * instead it is a private sock, accessible only to the kernel, and
+         * representing a wide range of network traffic spanning multiple
+         * connections unlike traditional sockets - check the TUN driver to
+         * get a better understanding of why this socket is special */
+
+        return avc_has_perm(sid, sid, SECCLASS_TUN_SOCKET, TUN_SOCKET__CREATE,
+                            NULL);
+}
+
+static void selinux_tun_dev_post_create(struct sock *sk)
+{
+        struct sk_security_struct *sksec = sk->sk_security;
+
+        /* we don't currently perform any NetLabel based labeling here and it
+         * isn't clear that we would want to do so anyway; while we could apply
+         * labeling without the support of the TUN user the resulting labeled
+         * traffic from the other end of the connection would almost certainly
+         * cause confusion to the TUN user that had no idea network labeling
+         * protocols were being used */
+
+        /* see the comments in selinux_tun_dev_create() about why we don't use
+         * the sockcreate SID here */
+
+        sksec->sid = current_sid();
+        sksec->sclass = SECCLASS_TUN_SOCKET;
+}
+
+static int selinux_tun_dev_attach(struct sock *sk)
+{
+        struct sk_security_struct *sksec = sk->sk_security;
+        u32 sid = current_sid();
+        int err;
+
+        err = avc_has_perm(sid, sksec->sid, SECCLASS_TUN_SOCKET,
+                           TUN_SOCKET__RELABELFROM, NULL);
+        if (err)
+                return err;
+        err = avc_has_perm(sid, sid, SECCLASS_TUN_SOCKET,
+                           TUN_SOCKET__RELABELTO, NULL);
+        if (err)
+                return err;
+
+        sksec->sid = sid;
+
+        return 0;
+}
+
 static int selinux_nlmsg_perm(struct sock *sk, struct sk_buff *skb)
 {
         int err = 0;
@@ -4341,7 +4457,7 @@ static unsigned int selinux_ip_forward(struct sk_buff *skb, int ifindex,
         int err;
         char *addrp;
         u32 peer_sid;
-        struct avc_audit_data ad;
+        struct common_audit_data ad;
         u8 secmark_active;
         u8 netlbl_active;
         u8 peerlbl_active;
@@ -4358,7 +4474,7 @@ static unsigned int selinux_ip_forward(struct sk_buff *skb, int ifindex,
         if (selinux_skb_peerlbl_sid(skb, family, &peer_sid) != 0)
                 return NF_DROP;
 
-        AVC_AUDIT_DATA_INIT(&ad, NET);
+        COMMON_AUDIT_DATA_INIT(&ad, NET);
         ad.u.net.netif = ifindex;
         ad.u.net.family = family;
         if (selinux_parse_skb(skb, &ad, &addrp, 1, NULL) != 0)
@@ -4446,7 +4562,7 @@ static unsigned int selinux_ip_postroute_compat(struct sk_buff *skb,
 {
         struct sock *sk = skb->sk;
         struct sk_security_struct *sksec;
-        struct avc_audit_data ad;
+        struct common_audit_data ad;
         char *addrp;
         u8 proto;
 
@@ -4454,7 +4570,7 @@ static unsigned int selinux_ip_postroute_compat(struct sk_buff *skb,
                 return NF_ACCEPT;
         sksec = sk->sk_security;
 
-        AVC_AUDIT_DATA_INIT(&ad, NET);
+        COMMON_AUDIT_DATA_INIT(&ad, NET);
         ad.u.net.netif = ifindex;
         ad.u.net.family = family;
         if (selinux_parse_skb(skb, &ad, &addrp, 0, &proto))
@@ -4478,7 +4594,7 @@ static unsigned int selinux_ip_postroute(struct sk_buff *skb, int ifindex,
         u32 secmark_perm;
         u32 peer_sid;
         struct sock *sk;
-        struct avc_audit_data ad;
+        struct common_audit_data ad;
         char *addrp;
         u8 secmark_active;
         u8 peerlbl_active;
@@ -4537,7 +4653,7 @@ static unsigned int selinux_ip_postroute(struct sk_buff *skb, int ifindex,
                 secmark_perm = PACKET__SEND;
         }
 
-        AVC_AUDIT_DATA_INIT(&ad, NET);
+        COMMON_AUDIT_DATA_INIT(&ad, NET);
         ad.u.net.netif = ifindex;
         ad.u.net.family = family;
         if (selinux_parse_skb(skb, &ad, &addrp, 0, NULL))
@@ -4607,13 +4723,13 @@ static int selinux_netlink_send(struct sock *sk, struct sk_buff *skb)
 static int selinux_netlink_recv(struct sk_buff *skb, int capability)
 {
         int err;
-        struct avc_audit_data ad;
+        struct common_audit_data ad;
 
         err = cap_netlink_recv(skb, capability);
         if (err)
                 return err;
 
-        AVC_AUDIT_DATA_INIT(&ad, CAP);
+        COMMON_AUDIT_DATA_INIT(&ad, CAP);
         ad.u.cap = capability;
 
         return avc_has_perm(NETLINK_CB(skb).sid, NETLINK_CB(skb).sid,
@@ -4672,12 +4788,12 @@ static int ipc_has_perm(struct kern_ipc_perm *ipc_perms,
                         u32 perms)
 {
         struct ipc_security_struct *isec;
-        struct avc_audit_data ad;
+        struct common_audit_data ad;
         u32 sid = current_sid();
 
         isec = ipc_perms->security;
 
-        AVC_AUDIT_DATA_INIT(&ad, IPC);
+        COMMON_AUDIT_DATA_INIT(&ad, IPC);
         ad.u.ipc_id = ipc_perms->key;
 
         return avc_has_perm(sid, isec->sid, isec->sclass, perms, &ad);
@@ -4697,7 +4813,7 @@ static void selinux_msg_msg_free_security(struct msg_msg *msg)
 static int selinux_msg_queue_alloc_security(struct msg_queue *msq)
 {
         struct ipc_security_struct *isec;
-        struct avc_audit_data ad;
+        struct common_audit_data ad;
         u32 sid = current_sid();
         int rc;
 
@@ -4707,7 +4823,7 @@ static int selinux_msg_queue_alloc_security(struct msg_queue *msq)
 
         isec = msq->q_perm.security;
 
-        AVC_AUDIT_DATA_INIT(&ad, IPC);
+        COMMON_AUDIT_DATA_INIT(&ad, IPC);
         ad.u.ipc_id = msq->q_perm.key;
 
         rc = avc_has_perm(sid, isec->sid, SECCLASS_MSGQ,
@@ -4727,12 +4843,12 @@ static void selinux_msg_queue_free_security(struct msg_queue *msq)
 static int selinux_msg_queue_associate(struct msg_queue *msq, int msqflg)
 {
         struct ipc_security_struct *isec;
-        struct avc_audit_data ad;
+        struct common_audit_data ad;
         u32 sid = current_sid();
 
         isec = msq->q_perm.security;
 
-        AVC_AUDIT_DATA_INIT(&ad, IPC);
+        COMMON_AUDIT_DATA_INIT(&ad, IPC);
         ad.u.ipc_id = msq->q_perm.key;
 
         return avc_has_perm(sid, isec->sid, SECCLASS_MSGQ,
@@ -4771,7 +4887,7 @@ static int selinux_msg_queue_msgsnd(struct msg_queue *msq, struct msg_msg *msg,
 {
         struct ipc_security_struct *isec;
         struct msg_security_struct *msec;
-        struct avc_audit_data ad;
+        struct common_audit_data ad;
         u32 sid = current_sid();
         int rc;
 
@@ -4792,7 +4908,7 @@ static int selinux_msg_queue_msgsnd(struct msg_queue *msq, struct msg_msg *msg,
                         return rc;
         }
 
-        AVC_AUDIT_DATA_INIT(&ad, IPC);
+        COMMON_AUDIT_DATA_INIT(&ad, IPC);
         ad.u.ipc_id = msq->q_perm.key;
 
         /* Can this process write to the queue? */
@@ -4816,14 +4932,14 @@ static int selinux_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
 {
         struct ipc_security_struct *isec;
         struct msg_security_struct *msec;
-        struct avc_audit_data ad;
+        struct common_audit_data ad;
         u32 sid = task_sid(target);
         int rc;
 
         isec = msq->q_perm.security;
         msec = msg->security;
 
-        AVC_AUDIT_DATA_INIT(&ad, IPC);
+        COMMON_AUDIT_DATA_INIT(&ad, IPC);
         ad.u.ipc_id = msq->q_perm.key;
 
         rc = avc_has_perm(sid, isec->sid,
@@ -4838,7 +4954,7 @@ static int selinux_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
 static int selinux_shm_alloc_security(struct shmid_kernel *shp)
 {
         struct ipc_security_struct *isec;
-        struct avc_audit_data ad;
+        struct common_audit_data ad;
         u32 sid = current_sid();
         int rc;
 
@@ -4848,7 +4964,7 @@ static int selinux_shm_alloc_security(struct shmid_kernel *shp)
 
         isec = shp->shm_perm.security;
 
-        AVC_AUDIT_DATA_INIT(&ad, IPC);
+        COMMON_AUDIT_DATA_INIT(&ad, IPC);
         ad.u.ipc_id = shp->shm_perm.key;
 
         rc = avc_has_perm(sid, isec->sid, SECCLASS_SHM,
@@ -4868,12 +4984,12 @@ static void selinux_shm_free_security(struct shmid_kernel *shp)
 static int selinux_shm_associate(struct shmid_kernel *shp, int shmflg)
 {
         struct ipc_security_struct *isec;
-        struct avc_audit_data ad;
+        struct common_audit_data ad;
         u32 sid = current_sid();
 
         isec = shp->shm_perm.security;
 
-        AVC_AUDIT_DATA_INIT(&ad, IPC);
+        COMMON_AUDIT_DATA_INIT(&ad, IPC);
         ad.u.ipc_id = shp->shm_perm.key;
 
         return avc_has_perm(sid, isec->sid, SECCLASS_SHM,
@@ -4930,7 +5046,7 @@ static int selinux_shm_shmat(struct shmid_kernel *shp,
 static int selinux_sem_alloc_security(struct sem_array *sma)
 {
         struct ipc_security_struct *isec;
-        struct avc_audit_data ad;
+        struct common_audit_data ad;
         u32 sid = current_sid();
         int rc;
 
@@ -4940,7 +5056,7 @@ static int selinux_sem_alloc_security(struct sem_array *sma)
 
         isec = sma->sem_perm.security;
 
-        AVC_AUDIT_DATA_INIT(&ad, IPC);
+        COMMON_AUDIT_DATA_INIT(&ad, IPC);
         ad.u.ipc_id = sma->sem_perm.key;
 
         rc = avc_has_perm(sid, isec->sid, SECCLASS_SEM,
@@ -4960,12 +5076,12 @@ static void selinux_sem_free_security(struct sem_array *sma)
 static int selinux_sem_associate(struct sem_array *sma, int semflg)
 {
         struct ipc_security_struct *isec;
-        struct avc_audit_data ad;
+        struct common_audit_data ad;
         u32 sid = current_sid();
 
         isec = sma->sem_perm.security;
 
-        AVC_AUDIT_DATA_INIT(&ad, IPC);
+        COMMON_AUDIT_DATA_INIT(&ad, IPC);
         ad.u.ipc_id = sma->sem_perm.key;
 
         return avc_has_perm(sid, isec->sid, SECCLASS_SEM,
@@ -5183,7 +5299,7 @@ static int selinux_setprocattr(struct task_struct *p,
 
                 /* Only allow single threaded processes to change context */
                 error = -EPERM;
-                if (!is_single_threaded(p)) {
+                if (!current_is_single_threaded()) {
                         error = security_bounded_transition(tsec->sid, sid);
                         if (error)
                                 goto abort_change;
@@ -5240,6 +5356,32 @@ static void selinux_release_secctx(char *secdata, u32 seclen)
         kfree(secdata);
 }
 
+/*
+ *      called with inode->i_mutex locked
+ */
+static int selinux_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
+{
+        return selinux_inode_setsecurity(inode, XATTR_SELINUX_SUFFIX, ctx, ctxlen, 0);
+}
+
+/*
+ *      called with inode->i_mutex locked
+ */
+static int selinux_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
+{
+        return __vfs_setxattr_noperm(dentry, XATTR_NAME_SELINUX, ctx, ctxlen, 0);
+}
+
+static int selinux_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
+{
+        int len = 0;
+        len = selinux_inode_getsecurity(inode, XATTR_SELINUX_SUFFIX,
+                                                ctx, true);
+        if (len < 0)
+                return len;
+        *ctxlen = len;
+        return 0;
+}
 #ifdef CONFIG_KEYS
 
 static int selinux_key_alloc(struct key *k, const struct cred *cred,
@@ -5311,7 +5453,7 @@ static int selinux_key_getsecurity(struct key *key, char **_buffer)
 static struct security_operations selinux_ops = {
         .name =                         "selinux",
 
-        .ptrace_may_access =            selinux_ptrace_may_access,
+        .ptrace_access_check =          selinux_ptrace_access_check,
         .ptrace_traceme =               selinux_ptrace_traceme,
         .capget =                       selinux_capget,
         .capset =                       selinux_capset,
@@ -5384,10 +5526,13 @@ static struct security_operations selinux_ops = {
         .dentry_open =                  selinux_dentry_open,
 
         .task_create =                  selinux_task_create,
+        .cred_alloc_blank =             selinux_cred_alloc_blank,
         .cred_free =                    selinux_cred_free,
         .cred_prepare =                 selinux_cred_prepare,
+        .cred_transfer =                selinux_cred_transfer,
         .kernel_act_as =                selinux_kernel_act_as,
         .kernel_create_files_as =       selinux_kernel_create_files_as,
+        .kernel_module_request =        selinux_kernel_module_request,
         .task_setpgid =                 selinux_task_setpgid,
         .task_getpgid =                 selinux_task_getpgid,
         .task_getsid =                  selinux_task_getsid,
@@ -5436,6 +5581,9 @@ static struct security_operations selinux_ops = {
         .secid_to_secctx =              selinux_secid_to_secctx,
         .secctx_to_secid =              selinux_secctx_to_secid,
         .release_secctx =               selinux_release_secctx,
+        .inode_notifysecctx =           selinux_inode_notifysecctx,
+        .inode_setsecctx =              selinux_inode_setsecctx,
+        .inode_getsecctx =              selinux_inode_getsecctx,
 
         .unix_stream_connect =          selinux_socket_unix_stream_connect,
         .unix_may_send =                selinux_socket_unix_may_send,
@@ -5465,6 +5613,9 @@ static struct security_operations selinux_ops = {
         .inet_csk_clone =               selinux_inet_csk_clone,
         .inet_conn_established =        selinux_inet_conn_established,
         .req_classify_flow =            selinux_req_classify_flow,
+        .tun_dev_create =               selinux_tun_dev_create,
+        .tun_dev_post_create =          selinux_tun_dev_post_create,
+        .tun_dev_attach =               selinux_tun_dev_attach,
 
 #ifdef CONFIG_SECURITY_NETWORK_XFRM
         .xfrm_policy_alloc_security =   selinux_xfrm_policy_alloc,
@@ -5679,6 +5830,9 @@ int selinux_disable(void)
         selinux_disabled = 1;
         selinux_enabled = 0;
 
+        /* Try to destroy the avc node cache */
+        avc_disable();
+
         /* Reset security_ops to the secondary module, dummy or capability. */
         security_ops = secondary_ops;