Merge branch 'audit.b50' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current

* 'audit.b50' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current:
  [PATCH] new predicate - AUDIT_FILETYPE
  [patch 2/2] Use find_task_by_vpid in audit code
  [patch 1/2] audit: let userspace fully control TTY input auditing
  [PATCH 2/2] audit: fix sparse shadowed variable warnings
  [PATCH 1/2] audit: move extern declarations to audit.h
  Audit: MAINTAINERS update
  Audit: increase the maximum length of the key field
  Audit: standardize string audit interfaces
  Audit: stop deadlock from signals under load
  Audit: save audit_backlog_limit audit messages in case auditd comes back
  Audit: collect sessionid in netlink messages
  Audit: end printk with newline

4 files changed, 235 insertions, 112 deletions

diff --git a/kernel/audit.c b/kernel/audit.c
index a7b16086d36f..b7d3709cc452 100644
--- a/kernel/audit.c
+++ b/kernel/audit.c
@@ -126,6 +126,8 @@ static int	   audit_freelist_count;
 static LIST_HEAD(audit_freelist);
 
 static struct sk_buff_head audit_skb_queue;
+/* queue of skbs to send to auditd when/if it comes back */
+static struct sk_buff_head audit_skb_hold_queue;
 static struct task_struct *kauditd_task;
 static DECLARE_WAIT_QUEUE_HEAD(kauditd_wait);
 static DECLARE_WAIT_QUEUE_HEAD(audit_backlog_wait);
@@ -154,6 +156,11 @@ struct audit_buffer {
         gfp_t                gfp_mask;
 };
 
+struct audit_reply {
+        int pid;
+        struct sk_buff *skb;
+};
+
 static void audit_set_pid(struct audit_buffer *ab, pid_t pid)
 {
         if (ab) {
@@ -252,14 +259,15 @@ void audit_log_lost(const char *message)
 }
 
 static int audit_log_config_change(char *function_name, int new, int old,
-                                   uid_t loginuid, u32 sid, int allow_changes)
+                                   uid_t loginuid, u32 sessionid, u32 sid,
+                                   int allow_changes)
 {
         struct audit_buffer *ab;
         int rc = 0;
 
         ab = audit_log_start(NULL, GFP_KERNEL, AUDIT_CONFIG_CHANGE);
-        audit_log_format(ab, "%s=%d old=%d by auid=%u", function_name, new,
-                         old, loginuid);
+        audit_log_format(ab, "%s=%d old=%d auid=%u ses=%u", function_name, new,
+                         old, loginuid, sessionid);
         if (sid) {
                 char *ctx = NULL;
                 u32 len;
@@ -279,7 +287,8 @@ static int audit_log_config_change(char *function_name, int new, int old,
 }
 
 static int audit_do_config_change(char *function_name, int *to_change,
-                                  int new, uid_t loginuid, u32 sid)
+                                  int new, uid_t loginuid, u32 sessionid,
+                                  u32 sid)
 {
         int allow_changes, rc = 0, old = *to_change;
 
@@ -290,8 +299,8 @@ static int audit_do_config_change(char *function_name, int *to_change,
                 allow_changes = 1;
 
         if (audit_enabled != AUDIT_OFF) {
-                rc = audit_log_config_change(function_name, new, old,
-                                             loginuid, sid, allow_changes);
+                rc = audit_log_config_change(function_name, new, old, loginuid,
+                                             sessionid, sid, allow_changes);
                 if (rc)
                         allow_changes = 0;
         }
@@ -305,26 +314,28 @@ static int audit_do_config_change(char *function_name, int *to_change,
         return rc;
 }
 
-static int audit_set_rate_limit(int limit, uid_t loginuid, u32 sid)
+static int audit_set_rate_limit(int limit, uid_t loginuid, u32 sessionid,
+                                u32 sid)
 {
         return audit_do_config_change("audit_rate_limit", &audit_rate_limit,
-                                      limit, loginuid, sid);
+                                      limit, loginuid, sessionid, sid);
 }
 
-static int audit_set_backlog_limit(int limit, uid_t loginuid, u32 sid)
+static int audit_set_backlog_limit(int limit, uid_t loginuid, u32 sessionid,
+                                   u32 sid)
 {
         return audit_do_config_change("audit_backlog_limit", &audit_backlog_limit,
-                                      limit, loginuid, sid);
+                                      limit, loginuid, sessionid, sid);
 }
 
-static int audit_set_enabled(int state, uid_t loginuid, u32 sid)
+static int audit_set_enabled(int state, uid_t loginuid, u32 sessionid, u32 sid)
 {
         int rc;
         if (state < AUDIT_OFF || state > AUDIT_LOCKED)
                 return -EINVAL;
 
         rc =  audit_do_config_change("audit_enabled", &audit_enabled, state,
-                                     loginuid, sid);
+                                     loginuid, sessionid, sid);
 
         if (!rc)
                 audit_ever_enabled |= !!state;
@@ -332,7 +343,7 @@ static int audit_set_enabled(int state, uid_t loginuid, u32 sid)
         return rc;
 }
 
-static int audit_set_failure(int state, uid_t loginuid, u32 sid)
+static int audit_set_failure(int state, uid_t loginuid, u32 sessionid, u32 sid)
 {
         if (state != AUDIT_FAIL_SILENT
             && state != AUDIT_FAIL_PRINTK
@@ -340,7 +351,43 @@ static int audit_set_failure(int state, uid_t loginuid, u32 sid)
                 return -EINVAL;
 
         return audit_do_config_change("audit_failure", &audit_failure, state,
-                                      loginuid, sid);
+                                      loginuid, sessionid, sid);
+}
+
+/*
+ * Queue skbs to be sent to auditd when/if it comes back.  These skbs should
+ * already have been sent via prink/syslog and so if these messages are dropped
+ * it is not a huge concern since we already passed the audit_log_lost()
+ * notification and stuff.  This is just nice to get audit messages during
+ * boot before auditd is running or messages generated while auditd is stopped.
+ * This only holds messages is audit_default is set, aka booting with audit=1
+ * or building your kernel that way.
+ */
+static void audit_hold_skb(struct sk_buff *skb)
+{
+        if (audit_default &&
+            skb_queue_len(&audit_skb_hold_queue) < audit_backlog_limit)
+                skb_queue_tail(&audit_skb_hold_queue, skb);
+        else
+                kfree_skb(skb);
+}
+
+static void kauditd_send_skb(struct sk_buff *skb)
+{
+        int err;
+        /* take a reference in case we can't send it and we want to hold it */
+        skb_get(skb);
+        err = netlink_unicast(audit_sock, skb, audit_nlk_pid, 0);
+        if (err < 0) {
+                BUG_ON(err != -ECONNREFUSED); /* Shoudn't happen */
+                printk(KERN_ERR "audit: *NO* daemon at audit_pid=%d\n", audit_pid);
+                audit_log_lost("auditd dissapeared\n");
+                audit_pid = 0;
+                /* we might get lucky and get this in the next auditd */
+                audit_hold_skb(skb);
+        } else
+                /* drop the extra reference if sent ok */
+                kfree_skb(skb);
 }
 
 static int kauditd_thread(void *dummy)
@@ -349,24 +396,41 @@ static int kauditd_thread(void *dummy)
 
         set_freezable();
         while (!kthread_should_stop()) {
+                /*
+                 * if auditd just started drain the queue of messages already
+                 * sent to syslog/printk.  remember loss here is ok.  we already
+                 * called audit_log_lost() if it didn't go out normally.  so the
+                 * race between the skb_dequeue and the next check for audit_pid
+                 * doesn't matter.
+                 *
+                 * if you ever find kauditd to be too slow we can get a perf win
+                 * by doing our own locking and keeping better track if there
+                 * are messages in this queue.  I don't see the need now, but
+                 * in 5 years when I want to play with this again I'll see this
+                 * note and still have no friggin idea what i'm thinking today.
+                 */
+                if (audit_default && audit_pid) {
+                        skb = skb_dequeue(&audit_skb_hold_queue);
+                        if (unlikely(skb)) {
+                                while (skb && audit_pid) {
+                                        kauditd_send_skb(skb);
+                                        skb = skb_dequeue(&audit_skb_hold_queue);
+                                }
+                        }
+                }
+
                 skb = skb_dequeue(&audit_skb_queue);
                 wake_up(&audit_backlog_wait);
                 if (skb) {
-                        if (audit_pid) {
-                                int err = netlink_unicast(audit_sock, skb, audit_nlk_pid, 0);
-                                if (err < 0) {
-                                        BUG_ON(err != -ECONNREFUSED); /* Shoudn't happen */
-                                        printk(KERN_ERR "audit: *NO* daemon at audit_pid=%d\n", audit_pid);
-                                        audit_log_lost("auditd dissapeared\n");
-                                        audit_pid = 0;
-                                }
-                        } else {
+                        if (audit_pid)
+                                kauditd_send_skb(skb);
+                        else {
                                 if (printk_ratelimit())
-                                        printk(KERN_NOTICE "%s\n", skb->data +
-                                                NLMSG_SPACE(0));
+                                        printk(KERN_NOTICE "%s\n", skb->data + NLMSG_SPACE(0));
                                 else
                                         audit_log_lost("printk limit exceeded\n");
-                                kfree_skb(skb);
+
+                                audit_hold_skb(skb);
                         }
                 } else {
                         DECLARE_WAITQUEUE(wait, current);
@@ -385,13 +449,13 @@ static int kauditd_thread(void *dummy)
         return 0;
 }
 
-static int audit_prepare_user_tty(pid_t pid, uid_t loginuid)
+static int audit_prepare_user_tty(pid_t pid, uid_t loginuid, u32 sessionid)
 {
         struct task_struct *tsk;
         int err;
 
         read_lock(&tasklist_lock);
-        tsk = find_task_by_pid(pid);
+        tsk = find_task_by_vpid(pid);
         err = -ESRCH;
         if (!tsk)
                 goto out;
@@ -404,7 +468,7 @@ static int audit_prepare_user_tty(pid_t pid, uid_t loginuid)
         if (err)
                 goto out;
 
-        tty_audit_push_task(tsk, loginuid);
+        tty_audit_push_task(tsk, loginuid, sessionid);
 out:
         read_unlock(&tasklist_lock);
         return err;
@@ -469,6 +533,19 @@ nlmsg_failure:			/* Used by NLMSG_PUT */
         return NULL;
 }
 
+static int audit_send_reply_thread(void *arg)
+{
+        struct audit_reply *reply = (struct audit_reply *)arg;
+
+        mutex_lock(&audit_cmd_mutex);
+        mutex_unlock(&audit_cmd_mutex);
+
+        /* Ignore failure. It'll only happen if the sender goes away,
+           because our timeout is set to infinite. */
+        netlink_unicast(audit_sock, reply->skb, reply->pid, 0);
+        kfree(reply);
+        return 0;
+}
 /**
  * audit_send_reply - send an audit reply message via netlink
  * @pid: process id to send reply to
@@ -485,14 +562,26 @@ nlmsg_failure:			/* Used by NLMSG_PUT */
 void audit_send_reply(int pid, int seq, int type, int done, int multi,
                       void *payload, int size)
 {
-        struct sk_buff  *skb;
+        struct sk_buff *skb;
+        struct task_struct *tsk;
+        struct audit_reply *reply = kmalloc(sizeof(struct audit_reply),
+                                            GFP_KERNEL);
+
+        if (!reply)
+                return;
+
         skb = audit_make_reply(pid, seq, type, done, multi, payload, size);
         if (!skb)
                 return;
-        /* Ignore failure. It'll only happen if the sender goes away,
-           because our timeout is set to infinite. */
-        netlink_unicast(audit_sock, skb, pid, 0);
-        return;
+
+        reply->pid = pid;
+        reply->skb = skb;
+
+        tsk = kthread_run(audit_send_reply_thread, reply, "audit_send_reply");
+        if (IS_ERR(tsk)) {
+                kfree(reply);
+                kfree_skb(skb);
+        }
 }
 
 /*
@@ -534,7 +623,8 @@ static int audit_netlink_ok(struct sk_buff *skb, u16 msg_type)
 }
 
 static int audit_log_common_recv_msg(struct audit_buffer **ab, u16 msg_type,
-                                     u32 pid, u32 uid, uid_t auid, u32 sid)
+                                     u32 pid, u32 uid, uid_t auid, u32 ses,
+                                     u32 sid)
 {
         int rc = 0;
         char *ctx = NULL;
@@ -546,8 +636,8 @@ static int audit_log_common_recv_msg(struct audit_buffer **ab, u16 msg_type,
         }
 
         *ab = audit_log_start(NULL, GFP_KERNEL, msg_type);
-        audit_log_format(*ab, "user pid=%d uid=%u auid=%u",
-                         pid, uid, auid);
+        audit_log_format(*ab, "user pid=%d uid=%u auid=%u ses=%u",
+                         pid, uid, auid, ses);
         if (sid) {
                 rc = security_secid_to_secctx(sid, &ctx, &len);
                 if (rc)
@@ -570,6 +660,7 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
         struct audit_buffer     *ab;
         u16                     msg_type = nlh->nlmsg_type;
         uid_t                   loginuid; /* loginuid of sender */
+        u32                     sessionid;
         struct audit_sig_info   *sig_data;
         char                    *ctx = NULL;
         u32                     len;
@@ -591,6 +682,7 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
         pid  = NETLINK_CREDS(skb)->pid;
         uid  = NETLINK_CREDS(skb)->uid;
         loginuid = NETLINK_CB(skb).loginuid;
+        sessionid = NETLINK_CB(skb).sessionid;
         sid  = NETLINK_CB(skb).sid;
         seq  = nlh->nlmsg_seq;
         data = NLMSG_DATA(nlh);
@@ -613,12 +705,12 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
                 status_get   = (struct audit_status *)data;
                 if (status_get->mask & AUDIT_STATUS_ENABLED) {
                         err = audit_set_enabled(status_get->enabled,
-                                                        loginuid, sid);
+                                                loginuid, sessionid, sid);
                         if (err < 0) return err;
                 }
                 if (status_get->mask & AUDIT_STATUS_FAILURE) {
                         err = audit_set_failure(status_get->failure,
-                                                         loginuid, sid);
+                                                loginuid, sessionid, sid);
                         if (err < 0) return err;
                 }
                 if (status_get->mask & AUDIT_STATUS_PID) {
@@ -627,17 +719,17 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
                         if (audit_enabled != AUDIT_OFF)
                                 audit_log_config_change("audit_pid", new_pid,
                                                         audit_pid, loginuid,
-                                                        sid, 1);
+                                                        sessionid, sid, 1);
 
                         audit_pid = new_pid;
                         audit_nlk_pid = NETLINK_CB(skb).pid;
                 }
                 if (status_get->mask & AUDIT_STATUS_RATE_LIMIT)
                         err = audit_set_rate_limit(status_get->rate_limit,
-                                                         loginuid, sid);
+                                                   loginuid, sessionid, sid);
                 if (status_get->mask & AUDIT_STATUS_BACKLOG_LIMIT)
                         err = audit_set_backlog_limit(status_get->backlog_limit,
-                                                        loginuid, sid);
+                                                      loginuid, sessionid, sid);
                 break;
         case AUDIT_USER:
         case AUDIT_FIRST_USER_MSG ... AUDIT_LAST_USER_MSG:
@@ -649,12 +741,13 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
                 if (err == 1) {
                         err = 0;
                         if (msg_type == AUDIT_USER_TTY) {
-                                err = audit_prepare_user_tty(pid, loginuid);
+                                err = audit_prepare_user_tty(pid, loginuid,
+                                                             sessionid);
                                 if (err)
                                         break;
                         }
                         audit_log_common_recv_msg(&ab, msg_type, pid, uid,
-                                                  loginuid, sid);
+                                                  loginuid, sessionid, sid);
 
                         if (msg_type != AUDIT_USER_TTY)
                                 audit_log_format(ab, " msg='%.1024s'",
@@ -664,8 +757,7 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
 
                                 audit_log_format(ab, " msg=");
                                 size = nlmsg_len(nlh);
-                                audit_log_n_untrustedstring(ab, size,
-                                                            data);
+                                audit_log_n_untrustedstring(ab, data, size);
                         }
                         audit_set_pid(ab, pid);
                         audit_log_end(ab);
@@ -677,7 +769,7 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
                         return -EINVAL;
                 if (audit_enabled == AUDIT_LOCKED) {
                         audit_log_common_recv_msg(&ab, AUDIT_CONFIG_CHANGE, pid,
-                                                  uid, loginuid, sid);
+                                                  uid, loginuid, sessionid, sid);
 
                         audit_log_format(ab, " audit_enabled=%d res=0",
                                          audit_enabled);
@@ -688,7 +780,7 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
         case AUDIT_LIST:
                 err = audit_receive_filter(nlh->nlmsg_type, NETLINK_CB(skb).pid,
                                            uid, seq, data, nlmsg_len(nlh),
-                                           loginuid, sid);
+                                           loginuid, sessionid, sid);
                 break;
         case AUDIT_ADD_RULE:
         case AUDIT_DEL_RULE:
@@ -696,7 +788,7 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
                         return -EINVAL;
                 if (audit_enabled == AUDIT_LOCKED) {
                         audit_log_common_recv_msg(&ab, AUDIT_CONFIG_CHANGE, pid,
-                                                  uid, loginuid, sid);
+                                                  uid, loginuid, sessionid, sid);
 
                         audit_log_format(ab, " audit_enabled=%d res=0",
                                          audit_enabled);
@@ -707,13 +799,13 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
         case AUDIT_LIST_RULES:
                 err = audit_receive_filter(nlh->nlmsg_type, NETLINK_CB(skb).pid,
                                            uid, seq, data, nlmsg_len(nlh),
-                                           loginuid, sid);
+                                           loginuid, sessionid, sid);
                 break;
         case AUDIT_TRIM:
                 audit_trim_trees();
 
                 audit_log_common_recv_msg(&ab, AUDIT_CONFIG_CHANGE, pid,
-                                          uid, loginuid, sid);
+                                          uid, loginuid, sessionid, sid);
 
                 audit_log_format(ab, " op=trim res=1");
                 audit_log_end(ab);
@@ -721,21 +813,21 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
         case AUDIT_MAKE_EQUIV: {
                 void *bufp = data;
                 u32 sizes[2];
-                size_t len = nlmsg_len(nlh);
+                size_t msglen = nlmsg_len(nlh);
                 char *old, *new;
 
                 err = -EINVAL;
-                if (len < 2 * sizeof(u32))
+                if (msglen < 2 * sizeof(u32))
                         break;
                 memcpy(sizes, bufp, 2 * sizeof(u32));
                 bufp += 2 * sizeof(u32);
-                len -= 2 * sizeof(u32);
-                old = audit_unpack_string(&bufp, &len, sizes[0]);
+                msglen -= 2 * sizeof(u32);
+                old = audit_unpack_string(&bufp, &msglen, sizes[0]);
                 if (IS_ERR(old)) {
                         err = PTR_ERR(old);
                         break;
                 }
-                new = audit_unpack_string(&bufp, &len, sizes[1]);
+                new = audit_unpack_string(&bufp, &msglen, sizes[1]);
                 if (IS_ERR(new)) {
                         err = PTR_ERR(new);
                         kfree(old);
@@ -745,7 +837,7 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
                 err = audit_tag_tree(old, new);
 
                 audit_log_common_recv_msg(&ab, AUDIT_CONFIG_CHANGE, pid,
-                                          uid, loginuid, sid);
+                                          uid, loginuid, sessionid, sid);
 
                 audit_log_format(ab, " op=make_equiv old=");
                 audit_log_untrustedstring(ab, old);
@@ -779,7 +871,7 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
                 struct task_struct *tsk;
 
                 read_lock(&tasklist_lock);
-                tsk = find_task_by_pid(pid);
+                tsk = find_task_by_vpid(pid);
                 if (!tsk)
                         err = -ESRCH;
                 else {
@@ -802,7 +894,7 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
                 if (s->enabled != 0 && s->enabled != 1)
                         return -EINVAL;
                 read_lock(&tasklist_lock);
-                tsk = find_task_by_pid(pid);
+                tsk = find_task_by_vpid(pid);
                 if (!tsk)
                         err = -ESRCH;
                 else {
@@ -877,6 +969,7 @@ static int __init audit_init(void)
                 audit_sock->sk_sndtimeo = MAX_SCHEDULE_TIMEOUT;
 
         skb_queue_head_init(&audit_skb_queue);
+        skb_queue_head_init(&audit_skb_hold_queue);
         audit_initialized = 1;
         audit_enabled = audit_default;
         audit_ever_enabled |= !!audit_default;
@@ -1199,7 +1292,7 @@ void audit_log_format(struct audit_buffer *ab, const char *fmt, ...)
  * This function will take the passed buf and convert it into a string of
  * ascii hex digits. The new string is placed onto the skb.
  */
-void audit_log_hex(struct audit_buffer *ab, const unsigned char *buf,
+void audit_log_n_hex(struct audit_buffer *ab, const unsigned char *buf,
                 size_t len)
 {
         int i, avail, new_len;
@@ -1235,8 +1328,8 @@ void audit_log_hex(struct audit_buffer *ab, const unsigned char *buf,
  * Format a string of no more than slen characters into the audit buffer,
  * enclosed in quote marks.
  */
-static void audit_log_n_string(struct audit_buffer *ab, size_t slen,
-                               const char *string)
+void audit_log_n_string(struct audit_buffer *ab, const char *string,
+                        size_t slen)
 {
         int avail, new_len;
         unsigned char *ptr;
@@ -1292,13 +1385,13 @@ int audit_string_contains_control(const char *string, size_t len)
  * The caller specifies the number of characters in the string to log, which may
  * or may not be the entire string.
  */
-void audit_log_n_untrustedstring(struct audit_buffer *ab, size_t len,
-                                 const char *string)
+void audit_log_n_untrustedstring(struct audit_buffer *ab, const char *string,
+                                 size_t len)
 {
         if (audit_string_contains_control(string, len))
-                audit_log_hex(ab, string, len);
+                audit_log_n_hex(ab, string, len);
         else
-                audit_log_n_string(ab, len, string);
+                audit_log_n_string(ab, string, len);
 }
 
 /**
@@ -1311,7 +1404,7 @@ void audit_log_n_untrustedstring(struct audit_buffer *ab, size_t len,
  */
 void audit_log_untrustedstring(struct audit_buffer *ab, const char *string)
 {
-        audit_log_n_untrustedstring(ab, strlen(string), string);
+        audit_log_n_untrustedstring(ab, string, strlen(string));
 }
 
 /* This is a helper-function to print the escaped d_path */
@@ -1355,19 +1448,23 @@ void audit_log_end(struct audit_buffer *ab)
                 audit_log_lost("rate limit exceeded");
         } else {
                 struct nlmsghdr *nlh = nlmsg_hdr(ab->skb);
+                nlh->nlmsg_len = ab->skb->len - NLMSG_SPACE(0);
+
                 if (audit_pid) {
-                        nlh->nlmsg_len = ab->skb->len - NLMSG_SPACE(0);
                         skb_queue_tail(&audit_skb_queue, ab->skb);
-                        ab->skb = NULL;
                         wake_up_interruptible(&kauditd_wait);
-                } else if (nlh->nlmsg_type != AUDIT_EOE) {
-                        if (printk_ratelimit()) {
-                                printk(KERN_NOTICE "type=%d %s\n",
-                                        nlh->nlmsg_type,
-                                        ab->skb->data + NLMSG_SPACE(0));
-                        } else
-                                audit_log_lost("printk limit exceeded\n");
+                } else {
+                        if (nlh->nlmsg_type != AUDIT_EOE) {
+                                if (printk_ratelimit()) {
+                                        printk(KERN_NOTICE "type=%d %s\n",
+                                                nlh->nlmsg_type,
+                                                ab->skb->data + NLMSG_SPACE(0));
+                                } else
+                                        audit_log_lost("printk limit exceeded\n");
+                        }
+                        audit_hold_skb(ab->skb);
                 }
+                ab->skb = NULL;
         }
         audit_buffer_free(ab);
 }
diff --git a/kernel/audit.h b/kernel/audit.h
index 3cfc54ee3e1f..9d6717412fec 100644
--- a/kernel/audit.h
+++ b/kernel/audit.h
@@ -74,6 +74,11 @@ struct audit_entry {
         struct audit_krule      rule;
 };
 
+#ifdef CONFIG_AUDIT
+extern int audit_enabled;
+extern int audit_ever_enabled;
+#endif
+
 extern int audit_pid;
 
 #define AUDIT_INODE_BUCKETS     32
@@ -104,6 +109,9 @@ struct audit_netlink_list {
 int audit_send_list(void *);
 
 struct inotify_watch;
+/* Inotify handle */
+extern struct inotify_handle *audit_ih;
+
 extern void audit_free_parent(struct inotify_watch *);
 extern void audit_handle_ievent(struct inotify_watch *, u32, u32, u32,
                                 const char *, struct inode *);
@@ -111,6 +119,7 @@ extern int selinux_audit_rule_update(void);
 
 extern struct mutex audit_filter_mutex;
 extern void audit_free_rule_rcu(struct rcu_head *);
+extern struct list_head audit_filter_list[];
 
 #ifdef CONFIG_AUDIT_TREE
 extern struct audit_chunk *audit_tree_lookup(const struct inode *);
@@ -137,6 +146,10 @@ extern void audit_put_tree(struct audit_tree *);
 
 extern char *audit_unpack_string(void **, size_t *, size_t);
 
+extern pid_t audit_sig_pid;
+extern uid_t audit_sig_uid;
+extern u32 audit_sig_sid;
+
 #ifdef CONFIG_AUDITSYSCALL
 extern int __audit_signal_info(int sig, struct task_struct *t);
 static inline int audit_signal_info(int sig, struct task_struct *t)
diff --git a/kernel/auditfilter.c b/kernel/auditfilter.c
index 13430176b3c9..0e0bd27e6512 100644
--- a/kernel/auditfilter.c
+++ b/kernel/auditfilter.c
@@ -89,14 +89,9 @@ struct list_head audit_filter_list[AUDIT_NR_FILTERS] = {
 
 DEFINE_MUTEX(audit_filter_mutex);
 
-/* Inotify handle */
-extern struct inotify_handle *audit_ih;
-
 /* Inotify events we care about. */
 #define AUDIT_IN_WATCH IN_MOVE|IN_CREATE|IN_DELETE|IN_DELETE_SELF|IN_MOVE_SELF
 
-extern int audit_enabled;
-
 void audit_free_parent(struct inotify_watch *i_watch)
 {
         struct audit_parent *parent;
@@ -422,7 +417,7 @@ exit_err:
 static struct audit_entry *audit_rule_to_entry(struct audit_rule *rule)
 {
         struct audit_entry *entry;
-        struct audit_field *f;
+        struct audit_field *ino_f;
         int err = 0;
         int i;
 
@@ -483,6 +478,10 @@ static struct audit_entry *audit_rule_to_entry(struct audit_rule *rule)
                         if (f->val & ~15)
                                 goto exit_free;
                         break;
+                case AUDIT_FILETYPE:
+                        if ((f->val & ~S_IFMT) > S_IFMT)
+                                goto exit_free;
+                        break;
                 case AUDIT_INODE:
                         err = audit_to_inode(&entry->rule, f);
                         if (err)
@@ -504,9 +503,9 @@ static struct audit_entry *audit_rule_to_entry(struct audit_rule *rule)
                 }
         }
 
-        f = entry->rule.inode_f;
-        if (f) {
-                switch(f->op) {
+        ino_f = entry->rule.inode_f;
+        if (ino_f) {
+                switch(ino_f->op) {
                 case AUDIT_NOT_EQUAL:
                         entry->rule.inode_f = NULL;
                 case AUDIT_EQUAL:
@@ -531,7 +530,7 @@ static struct audit_entry *audit_data_to_entry(struct audit_rule_data *data,
 {
         int err = 0;
         struct audit_entry *entry;
-        struct audit_field *f;
+        struct audit_field *ino_f;
         void *bufp;
         size_t remain = datasz - sizeof(struct audit_rule_data);
         int i;
@@ -654,14 +653,18 @@ static struct audit_entry *audit_data_to_entry(struct audit_rule_data *data,
                         if (f->val & ~15)
                                 goto exit_free;
                         break;
+                case AUDIT_FILETYPE:
+                        if ((f->val & ~S_IFMT) > S_IFMT)
+                                goto exit_free;
+                        break;
                 default:
                         goto exit_free;
                 }
         }
 
-        f = entry->rule.inode_f;
-        if (f) {
-                switch(f->op) {
+        ino_f = entry->rule.inode_f;
+        if (ino_f) {
+                switch(ino_f->op) {
                 case AUDIT_NOT_EQUAL:
                         entry->rule.inode_f = NULL;
                 case AUDIT_EQUAL:
@@ -1500,8 +1503,9 @@ static void audit_list_rules(int pid, int seq, struct sk_buff_head *q)
 }
 
 /* Log rule additions and removals */
-static void audit_log_rule_change(uid_t loginuid, u32 sid, char *action,
-                                  struct audit_krule *rule, int res)
+static void audit_log_rule_change(uid_t loginuid, u32 sessionid, u32 sid,
+                                  char *action, struct audit_krule *rule,
+                                  int res)
 {
         struct audit_buffer *ab;
 
@@ -1511,7 +1515,7 @@ static void audit_log_rule_change(uid_t loginuid, u32 sid, char *action,
         ab = audit_log_start(NULL, GFP_KERNEL, AUDIT_CONFIG_CHANGE);
         if (!ab)
                 return;
-        audit_log_format(ab, "auid=%u", loginuid);
+        audit_log_format(ab, "auid=%u ses=%u", loginuid, sessionid);
         if (sid) {
                 char *ctx = NULL;
                 u32 len;
@@ -1543,7 +1547,7 @@ static void audit_log_rule_change(uid_t loginuid, u32 sid, char *action,
  * @sid: SE Linux Security ID of sender
  */
 int audit_receive_filter(int type, int pid, int uid, int seq, void *data,
-                         size_t datasz, uid_t loginuid, u32 sid)
+                         size_t datasz, uid_t loginuid, u32 sessionid, u32 sid)
 {
         struct task_struct *tsk;
         struct audit_netlink_list *dest;
@@ -1590,7 +1594,8 @@ int audit_receive_filter(int type, int pid, int uid, int seq, void *data,
 
                 err = audit_add_rule(entry,
                                      &audit_filter_list[entry->rule.listnr]);
-                audit_log_rule_change(loginuid, sid, "add", &entry->rule, !err);
+                audit_log_rule_change(loginuid, sessionid, sid, "add",
+                                      &entry->rule, !err);
 
                 if (err)
                         audit_free_rule(entry);
@@ -1606,8 +1611,8 @@ int audit_receive_filter(int type, int pid, int uid, int seq, void *data,
 
                 err = audit_del_rule(entry,
                                      &audit_filter_list[entry->rule.listnr]);
-                audit_log_rule_change(loginuid, sid, "remove", &entry->rule,
-                                      !err);
+                audit_log_rule_change(loginuid, sessionid, sid, "remove",
+                                      &entry->rule, !err);
 
                 audit_free_rule(entry);
                 break;
diff --git a/kernel/auditsc.c b/kernel/auditsc.c
index 56e56ed594a8..c10e7aae04d7 100644
--- a/kernel/auditsc.c
+++ b/kernel/auditsc.c
@@ -68,9 +68,6 @@
 
 #include "audit.h"
 
-extern struct list_head audit_filter_list[];
-extern int audit_ever_enabled;
-
 /* AUDIT_NAMES is the number of slots we reserve in the audit_context
  * for saving names from getname(). */
 #define AUDIT_NAMES    20
@@ -283,6 +280,19 @@ static int audit_match_perm(struct audit_context *ctx, int mask)
         }
 }
 
+static int audit_match_filetype(struct audit_context *ctx, int which)
+{
+        unsigned index = which & ~S_IFMT;
+        mode_t mode = which & S_IFMT;
+        if (index >= ctx->name_count)
+                return 0;
+        if (ctx->names[index].ino == -1)
+                return 0;
+        if ((ctx->names[index].mode ^ mode) & S_IFMT)
+                return 0;
+        return 1;
+}
+
 /*
  * We keep a linked list of fixed-sized (31 pointer) arrays of audit_chunk *;
  * ->first_trees points to its beginning, ->trees - to the current end of data.
@@ -592,6 +602,9 @@ static int audit_filter_rules(struct task_struct *tsk,
                 case AUDIT_PERM:
                         result = audit_match_perm(ctx, f->val);
                         break;
+                case AUDIT_FILETYPE:
+                        result = audit_match_filetype(ctx, f->val);
+                        break;
                 }
 
                 if (!result)
@@ -1095,7 +1108,7 @@ static int audit_log_single_execve_arg(struct audit_context *context,
                         audit_log_format(*ab, "[%d]", i);
                 audit_log_format(*ab, "=");
                 if (has_cntl)
-                        audit_log_hex(*ab, buf, to_send);
+                        audit_log_n_hex(*ab, buf, to_send);
                 else
                         audit_log_format(*ab, "\"%s\"", buf);
                 audit_log_format(*ab, "\n");
@@ -1296,7 +1309,6 @@ static void audit_log_exit(struct audit_context *context, struct task_struct *ts
                         break; }
 
                 case AUDIT_SOCKETCALL: {
-                        int i;
                         struct audit_aux_data_socketcall *axs = (void *)aux;
                         audit_log_format(ab, "nargs=%d", axs->nargs);
                         for (i=0; i<axs->nargs; i++)
@@ -1307,7 +1319,7 @@ static void audit_log_exit(struct audit_context *context, struct task_struct *ts
                         struct audit_aux_data_sockaddr *axs = (void *)aux;
 
                         audit_log_format(ab, "saddr=");
-                        audit_log_hex(ab, axs->a, axs->len);
+                        audit_log_n_hex(ab, axs->a, axs->len);
                         break; }
 
                 case AUDIT_FD_PAIR: {
@@ -1321,7 +1333,6 @@ static void audit_log_exit(struct audit_context *context, struct task_struct *ts
 
         for (aux = context->aux_pids; aux; aux = aux->next) {
                 struct audit_aux_data_pids *axs = (void *)aux;
-                int i;
 
                 for (i = 0; i < axs->pid_count; i++)
                         if (audit_log_pid_context(context, axs->target_pid[i],
@@ -1371,8 +1382,8 @@ static void audit_log_exit(struct audit_context *context, struct task_struct *ts
                         default:
                                 /* log the name's directory component */
                                 audit_log_format(ab, " name=");
-                                audit_log_n_untrustedstring(ab, n->name_len,
-                                                            n->name);
+                                audit_log_n_untrustedstring(ab, n->name,
+                                                            n->name_len);
                         }
                 } else
                         audit_log_format(ab, " name=(null)");
@@ -1596,7 +1607,7 @@ static inline void handle_one(const struct inode *inode)
         if (likely(put_tree_ref(context, chunk)))
                 return;
         if (unlikely(!grow_tree_refs(context))) {
-                printk(KERN_WARNING "out of memory, audit has lost a tree reference");
+                printk(KERN_WARNING "out of memory, audit has lost a tree reference\n");
                 audit_set_auditable(context);
                 audit_put_chunk(chunk);
                 unroll_tree_refs(context, p, count);
@@ -1656,7 +1667,7 @@ retry:
                 }
                 /* too bad */
                 printk(KERN_WARNING
-                        "out of memory, audit has lost a tree reference");
+                        "out of memory, audit has lost a tree reference\n");
                 unroll_tree_refs(context, p, count);
                 audit_set_auditable(context);
                 return;
@@ -1752,13 +1763,13 @@ static int audit_inc_name_count(struct audit_context *context,
         if (context->name_count >= AUDIT_NAMES) {
                 if (inode)
                         printk(KERN_DEBUG "name_count maxed, losing inode data: "
-                               "dev=%02x:%02x, inode=%lu",
+                               "dev=%02x:%02x, inode=%lu\n",
                                MAJOR(inode->i_sb->s_dev),
                                MINOR(inode->i_sb->s_dev),
                                inode->i_ino);
 
                 else
-                        printk(KERN_DEBUG "name_count maxed, losing inode data");
+                        printk(KERN_DEBUG "name_count maxed, losing inode data\n");
                 return 1;
         }
         context->name_count++;
@@ -2361,9 +2372,6 @@ int __audit_signal_info(int sig, struct task_struct *t)
         struct audit_aux_data_pids *axp;
         struct task_struct *tsk = current;
         struct audit_context *ctx = tsk->audit_context;
-        extern pid_t audit_sig_pid;
-        extern uid_t audit_sig_uid;
-        extern u32 audit_sig_sid;
 
         if (audit_pid && t->tgid == audit_pid) {
                 if (sig == SIGTERM || sig == SIGHUP || sig == SIGUSR1) {