Merge branch 'audit.b46' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current

dd5f5fed · Linus Torvalds <[email protected]> · 2008-02-02 08:37:03 +11:00

* 'audit.b46' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current:
  [AUDIT] Add uid, gid fields to ANOM_PROMISCUOUS message
  [AUDIT] ratelimit printk messages audit
  [patch 2/2] audit: complement va_copy with va_end()
  [patch 1/2] kernel/audit.c: warning fix
  [AUDIT] create context if auditing was ever enabled
  [AUDIT] clean up audit_receive_msg()
  [AUDIT] make audit=0 really stop audit messages
  [AUDIT] break large execve argument logging into smaller messages
  [AUDIT] include audit type in audit message when using printk
  [AUDIT] do not panic on exclude messages in audit_log_pid_context()
  [AUDIT] Add End of Event record
  [AUDIT] add session id to audit messages
  [AUDIT] collect uid, loginuid, and comm in OBJ_PID records
  [AUDIT] return EINTR not ERESTART*
  [PATCH] get rid of loginuid races
  [PATCH] switch audit_get_loginuid() to task_struct *

Commit: dd5f5fed6c9458a7aa81eeef3732cc3a9891cfdf
Parents: 3e01dfce · 7759db82

Merge commit. Changes below are compared with the first parent: 3e01dfce.

Changes

16 files changed · +533 −423

File	Status	Add	Del	Content
Documentation/filesystems/proc.txt	modified	+0	−7	View file
drivers/char/tty_audit.c	modified	+13	−6	View file
fs/proc/base.c	modified	+1	−1	View file
include/linux/audit.h	modified	+9	−4	View file
include/linux/init_task.h	modified	+8	−0	View file
include/linux/sched.h	modified	+4	−0	View file
kernel/audit.c	modified	+178	−256	View file
kernel/auditfilter.c	modified	+33	−21	View file
kernel/auditsc.c	modified	+256	−93	View file
kernel/sysctl.c	modified	+0	−11	View file
net/core/dev.c	modified	+9	−6	View file
net/key/af_key.c	modified	+7	−7	View file
net/netlink/af_netlink.c	modified	+1	−1	View file
net/xfrm/xfrm_state.c	modified	+1	−1	View file
security/selinux/selinuxfs.c	modified	+10	−7	View file
security/selinux/ss/services.c	modified	+3	−2	View file

Only the first 600 diff lines are shown. Download the complete patch.

Documentation/filesystems/proc.txt

View file

diff --git a/Documentation/filesystems/proc.txt b/Documentation/filesystems/proc.txt
index 11fe51c..194c8f3 100644
--- a/Documentation/filesystems/proc.txt
+++ b/Documentation/filesystems/proc.txt
@@ -1134,13 +1134,6 @@ check the amount of free space (value is in seconds). Default settings are: 4,
 resume it  if we have a value of 3 or more percent; consider information about
 the amount of free space valid for 30 seconds
 
-audit_argv_kb
--------------
-
-The file contains a single value denoting the limit on the argv array size
-for execve (in KiB). This limit is only applied when system call auditing for
-execve is enabled, otherwise the value is ignored.
-
 ctrl-alt-del
 ------------
 

drivers/char/tty_audit.c

View file

diff --git a/drivers/char/tty_audit.c b/drivers/char/tty_audit.c
index d222012..bacded0 100644
--- a/drivers/char/tty_audit.c
+++ b/drivers/char/tty_audit.c
@@ -73,6 +73,7 @@ static void tty_audit_buf_put(struct tty_audit_buf *buf)
  *	@tsk with @loginuid.  @buf->mutex must be locked.
  */
 static void tty_audit_buf_push(struct task_struct *tsk, uid_t loginuid,
+			       unsigned int sessionid,
 			       struct tty_audit_buf *buf)
 {
 	struct audit_buffer *ab;
@@ -85,9 +86,9 @@ static void tty_audit_buf_push(struct task_struct *tsk, uid_t loginuid,
 	if (ab) {
 		char name[sizeof(tsk->comm)];
 
-		audit_log_format(ab, "tty pid=%u uid=%u auid=%u major=%d "
-				 "minor=%d comm=", tsk->pid, tsk->uid,
-				 loginuid, buf->major, buf->minor);
+		audit_log_format(ab, "tty pid=%u uid=%u auid=%u ses=%u "
+				 "major=%d minor=%d comm=", tsk->pid, tsk->uid,
+				 loginuid, sessionid, buf->major, buf->minor);
 		get_task_comm(name, tsk);
 		audit_log_untrustedstring(ab, name);
 		audit_log_format(ab, " data=");
@@ -105,8 +106,9 @@ static void tty_audit_buf_push(struct task_struct *tsk, uid_t loginuid,
  */
 static void tty_audit_buf_push_current(struct tty_audit_buf *buf)
 {
-	tty_audit_buf_push(current, audit_get_loginuid(current->audit_context),
-			   buf);
+	uid_t auid = audit_get_loginuid(current);
+	unsigned int sessionid = audit_get_sessionid(current);
+	tty_audit_buf_push(current, auid, sessionid, buf);
 }
 
 /**
@@ -152,6 +154,11 @@ void tty_audit_fork(struct signal_struct *sig)
 void tty_audit_push_task(struct task_struct *tsk, uid_t loginuid)
 {
 	struct tty_audit_buf *buf;
+	/* FIXME I think this is correct.  Check against netlink once that is
+	 * I really need to read this code more closely.  But that's for
+	 * another patch.
+	 */
+	unsigned int sessionid = audit_get_sessionid(tsk);
 
 	spin_lock_irq(&tsk->sighand->siglock);
 	buf = tsk->signal->tty_audit_buf;
@@ -162,7 +169,7 @@ void tty_audit_push_task(struct task_struct *tsk, uid_t loginuid)
 		return;
 
 	mutex_lock(&buf->mutex);
-	tty_audit_buf_push(tsk, loginuid, buf);
+	tty_audit_buf_push(tsk, loginuid, sessionid, buf);
 	mutex_unlock(&buf->mutex);
 
 	tty_audit_buf_put(buf);

fs/proc/base.c

View file

diff --git a/fs/proc/base.c b/fs/proc/base.c
index 9fa9708..3353748 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -984,7 +984,7 @@ static ssize_t proc_loginuid_read(struct file * file, char __user * buf,
 	if (!task)
 		return -ESRCH;
 	length = scnprintf(tmpbuf, TMPBUFLEN, "%u",
-				audit_get_loginuid(task->audit_context));
+				audit_get_loginuid(task));
 	put_task_struct(task);
 	return simple_read_from_buffer(buf, count, ppos, tmpbuf, length);
 }

include/linux/audit.h

View file

diff --git a/include/linux/audit.h b/include/linux/audit.h
index bdd6f5d..9715302 100644
--- a/include/linux/audit.h
+++ b/include/linux/audit.h
@@ -98,6 +98,7 @@
 #define AUDIT_FD_PAIR		1317    /* audit record for pipe/socketpair */
 #define AUDIT_OBJ_PID		1318	/* ptrace target */
 #define AUDIT_TTY		1319	/* Input on an administrative TTY */
+#define AUDIT_EOE		1320	/* End of multi-record event */
 
 #define AUDIT_AVC		1400	/* SE Linux avc denial or grant */
 #define AUDIT_SELINUX_ERR	1401	/* Internal SE Linux Errors */
@@ -409,7 +410,8 @@ extern unsigned int audit_serial(void);
 extern void auditsc_get_stamp(struct audit_context *ctx,
 			      struct timespec *t, unsigned int *serial);
 extern int  audit_set_loginuid(struct task_struct *task, uid_t loginuid);
-extern uid_t audit_get_loginuid(struct audit_context *ctx);
+#define audit_get_loginuid(t) ((t)->loginuid)
+#define audit_get_sessionid(t) ((t)->sessionid)
 extern void audit_log_task_context(struct audit_buffer *ab);
 extern int __audit_ipc_obj(struct kern_ipc_perm *ipcp);
 extern int __audit_ipc_set_perm(unsigned long qbytes, uid_t uid, gid_t gid, mode_t mode);
@@ -488,7 +490,8 @@ extern int audit_signals;
 #define audit_inode_child(d,i,p) do { ; } while (0)
 #define audit_core_dumps(i) do { ; } while (0)
 #define auditsc_get_stamp(c,t,s) do { BUG(); } while (0)
-#define audit_get_loginuid(c) ({ -1; })
+#define audit_get_loginuid(t) (-1)
+#define audit_get_sessionid(t) (-1)
 #define audit_log_task_context(b) do { ; } while (0)
 #define audit_ipc_obj(i) ({ 0; })
 #define audit_ipc_set_perm(q,u,g,m) ({ 0; })
@@ -522,9 +525,11 @@ extern void		    audit_log_end(struct audit_buffer *ab);
 extern void		    audit_log_hex(struct audit_buffer *ab,
 					  const unsigned char *buf,
 					  size_t len);
-extern const char *	    audit_log_untrustedstring(struct audit_buffer *ab,
+extern int		    audit_string_contains_control(const char *string,
+							  size_t len);
+extern void		    audit_log_untrustedstring(struct audit_buffer *ab,
 						      const char *string);
-extern const char *	    audit_log_n_untrustedstring(struct audit_buffer *ab,
+extern void		    audit_log_n_untrustedstring(struct audit_buffer *ab,
 							size_t n,
 							const char *string);
 extern void		    audit_log_d_path(struct audit_buffer *ab,

include/linux/init_task.h

View file

diff --git a/include/linux/init_task.h b/include/linux/init_task.h
index e6b3f70..f42663e 100644
--- a/include/linux/init_task.h
+++ b/include/linux/init_task.h
@@ -114,6 +114,13 @@ extern struct group_info init_groups;
 	.pid = &init_struct_pid,				\
 }
 
+#ifdef CONFIG_AUDITSYSCALL
+#define INIT_IDS \
+	.loginuid = -1, \
+	.sessionid = -1,
+#else
+#define INIT_IDS
+#endif
 /*
  *  INIT_TASK is used to set up the first task table, touch at
  * your own risk!. Base=0, limit=0x1fffff (=2MB)
@@ -173,6 +180,7 @@ extern struct group_info init_groups;
 		[PIDTYPE_SID]  = INIT_PID_LINK(PIDTYPE_SID),		\
 	},								\
 	.dirties = INIT_PROP_LOCAL_SINGLE(dirties),			\
+	INIT_IDS							\
 	INIT_TRACE_IRQFLAGS						\
 	INIT_LOCKDEP							\
 }

include/linux/sched.h

View file

diff --git a/include/linux/sched.h b/include/linux/sched.h
index 6c33357..af6947e 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1139,6 +1139,10 @@ struct task_struct {
 	void *security;
 #endif
 	struct audit_context *audit_context;
+#ifdef CONFIG_AUDITSYSCALL
+	uid_t loginuid;
+	unsigned int sessionid;
+#endif
 	seccomp_t seccomp;
 
 /* Thread group tracking */

kernel/audit.c

View file

diff --git a/kernel/audit.c b/kernel/audit.c
index 801c946..c8555b1 100644
--- a/kernel/audit.c
+++ b/kernel/audit.c
@@ -66,10 +66,11 @@
  * (Initialization happens after skb_init is called.) */
 static int	audit_initialized;
 
-/* 0 - no auditing
- * 1 - auditing enabled
- * 2 - auditing enabled and configuration is locked/unchangeable. */
+#define AUDIT_OFF	0
+#define AUDIT_ON	1
+#define AUDIT_LOCKED	2
 int		audit_enabled;
+int		audit_ever_enabled;
 
 /* Default state when kernel boots without any parameters. */
 static int	audit_default;
@@ -152,8 +153,10 @@ struct audit_buffer {
 
 static void audit_set_pid(struct audit_buffer *ab, pid_t pid)
 {
-	struct nlmsghdr *nlh = nlmsg_hdr(ab->skb);
-	nlh->nlmsg_pid = pid;
+	if (ab) {
+		struct nlmsghdr *nlh = nlmsg_hdr(ab->skb);
+		nlh->nlmsg_pid = pid;
+	}
 }
 
 void audit_panic(const char *message)
@@ -163,7 +166,8 @@ void audit_panic(const char *message)
 	case AUDIT_FAIL_SILENT:
 		break;
 	case AUDIT_FAIL_PRINTK:
-		printk(KERN_ERR "audit: %s\n", message);
+		if (printk_ratelimit())
+			printk(KERN_ERR "audit: %s\n", message);
 		break;
 	case AUDIT_FAIL_PANIC:
 		panic("audit: %s\n", message);
@@ -231,161 +235,107 @@ void audit_log_lost(const char *message)
 	}
 
 	if (print) {
-		printk(KERN_WARNING
-		       "audit: audit_lost=%d audit_rate_limit=%d audit_backlog_limit=%d\n",
-		       atomic_read(&audit_lost),
-		       audit_rate_limit,
-		       audit_backlog_limit);
+		if (printk_ratelimit())
+			printk(KERN_WARNING
+				"audit: audit_lost=%d audit_rate_limit=%d "
+				"audit_backlog_limit=%d\n",
+				atomic_read(&audit_lost),
+				audit_rate_limit,
+				audit_backlog_limit);
 		audit_panic(message);
 	}
 }
 
-static int audit_set_rate_limit(int limit, uid_t loginuid, u32 sid)
+static int audit_log_config_change(char *function_name, int new, int old,
+				   uid_t loginuid, u32 sid, int allow_changes)
 {
-	int res, rc = 0, old = audit_rate_limit;
-
-	/* check if we are locked */
-	if (audit_enabled == 2)
-		res = 0;
-	else
-		res = 1;
+	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);
 	if (sid) {
 		char *ctx = NULL;
 		u32 len;
-		if ((rc = selinux_sid_to_string(sid, &ctx, &len)) == 0) {
-			audit_log(NULL, GFP_KERNEL, AUDIT_CONFIG_CHANGE,
-				"audit_rate_limit=%d old=%d by auid=%u"
-				" subj=%s res=%d",
-				limit, old, loginuid, ctx, res);
+
+		rc = selinux_sid_to_string(sid, &ctx, &len);
+		if (rc) {
+			audit_log_format(ab, " sid=%u", sid);
+			allow_changes = 0; /* Something weird, deny request */
+		} else {
+			audit_log_format(ab, " subj=%s", ctx);
 			kfree(ctx);
-		} else
-			res = 0; /* Something weird, deny request */
+		}
 	}
-	audit_log(NULL, GFP_KERNEL, AUDIT_CONFIG_CHANGE,
-		"audit_rate_limit=%d old=%d by auid=%u res=%d",
-		limit, old, loginuid, res);
-
-	/* If we are allowed, make the change */
-	if (res == 1)
-		audit_rate_limit = limit;
-	/* Not allowed, update reason */
-	else if (rc == 0)
-		rc = -EPERM;
+	audit_log_format(ab, " res=%d", allow_changes);
+	audit_log_end(ab);
 	return rc;
 }
 
-static int audit_set_backlog_limit(int limit, uid_t loginuid, u32 sid)
+static int audit_do_config_change(char *function_name, int *to_change,
+				  int new, uid_t loginuid, u32 sid)
 {
-	int res, rc = 0, old = audit_backlog_limit;
+	int allow_changes, rc = 0, old = *to_change;
 
 	/* check if we are locked */
-	if (audit_enabled == 2)
-		res = 0;
+	if (audit_enabled == AUDIT_LOCKED)
+		allow_changes = 0;
 	else
-		res = 1;
+		allow_changes = 1;
 
-	if (sid) {
-		char *ctx = NULL;
-		u32 len;
-		if ((rc = selinux_sid_to_string(sid, &ctx, &len)) == 0) {
-			audit_log(NULL, GFP_KERNEL, AUDIT_CONFIG_CHANGE,
-				"audit_backlog_limit=%d old=%d by auid=%u"
-				" subj=%s res=%d",
-				limit, old, loginuid, ctx, res);
-			kfree(ctx);
-		} else
-			res = 0; /* Something weird, deny request */
+	if (audit_enabled != AUDIT_OFF) {
+		rc = audit_log_config_change(function_name, new, old,
+					     loginuid, sid, allow_changes);
+		if (rc)
+			allow_changes = 0;
 	}
-	audit_log(NULL, GFP_KERNEL, AUDIT_CONFIG_CHANGE,
-		"audit_backlog_limit=%d old=%d by auid=%u res=%d",
-		limit, old, loginuid, res);
 
 	/* If we are allowed, make the change */
-	if (res == 1)
-		audit_backlog_limit = limit;
+	if (allow_changes == 1)
+		*to_change = new;
 	/* Not allowed, update reason */
 	else if (rc == 0)
 		rc = -EPERM;
 	return rc;
 }
 
-static int audit_set_enabled(int state, uid_t loginuid, u32 sid)
+static int audit_set_rate_limit(int limit, uid_t loginuid, u32 sid)
+{
+	return audit_do_config_change("audit_rate_limit", &audit_rate_limit,
+				      limit, loginuid, sid);
+}
+
+static int audit_set_backlog_limit(int limit, uid_t loginuid, u32 sid)
 {
-	int res, rc = 0, old = audit_enabled;
+	return audit_do_config_change("audit_backlog_limit", &audit_backlog_limit,
+				      limit, loginuid, sid);
+}
 
-	if (state < 0 || state > 2)
+static int audit_set_enabled(int state, uid_t loginuid, u32 sid)
+{
+	int rc;
+	if (state < AUDIT_OFF || state > AUDIT_LOCKED)
 		return -EINVAL;
 
-	/* check if we are locked */
-	if (audit_enabled == 2)
-		res = 0;
-	else
-		res = 1;
+	rc =  audit_do_config_change("audit_enabled", &audit_enabled, state,
+				     loginuid, sid);
 
-	if (sid) {
-		char *ctx = NULL;
-		u32 len;
-		if ((rc = selinux_sid_to_string(sid, &ctx, &len)) == 0) {
-			audit_log(NULL, GFP_KERNEL, AUDIT_CONFIG_CHANGE,
-				"audit_enabled=%d old=%d by auid=%u"
-				" subj=%s res=%d",
-				state, old, loginuid, ctx, res);
-			kfree(ctx);
-		} else
-			res = 0; /* Something weird, deny request */
-	}
-	audit_log(NULL, GFP_KERNEL, AUDIT_CONFIG_CHANGE,
-		"audit_enabled=%d old=%d by auid=%u res=%d",
-		state, old, loginuid, res);
+	if (!rc)
+		audit_ever_enabled |= !!state;
 
-	/* If we are allowed, make the change */
-	if (res == 1)
-		audit_enabled = state;
-	/* Not allowed, update reason */
-	else if (rc == 0)
-		rc = -EPERM;
 	return rc;
 }
 
 static int audit_set_failure(int state, uid_t loginuid, u32 sid)
 {
-	int res, rc = 0, old = audit_failure;
-
 	if (state != AUDIT_FAIL_SILENT
 	    && state != AUDIT_FAIL_PRINTK
 	    && state != AUDIT_FAIL_PANIC)
 		return -EINVAL;
 
-	/* check if we are locked */
-	if (audit_enabled == 2)
-		res = 0;
-	else
-		res = 1;
-
-	if (sid) {
-		char *ctx = NULL;
-		u32 len;
-		if ((rc = selinux_sid_to_string(sid, &ctx, &len)) == 0) {
-			audit_log(NULL, GFP_KERNEL, AUDIT_CONFIG_CHANGE,
-				"audit_failure=%d old=%d by auid=%u"
-				" subj=%s res=%d",
-				state, old, loginuid, ctx, res);
-			kfree(ctx);
-		} else
-			res = 0; /* Something weird, deny request */
-	}
-	audit_log(NULL, GFP_KERNEL, AUDIT_CONFIG_CHANGE,
-		"audit_failure=%d old=%d by auid=%u res=%d",
-		state, old, loginuid, res);
-
-	/* If we are allowed, make the change */
-	if (res == 1)
-		audit_failure = state;
-	/* Not allowed, update reason */
-	else if (rc == 0)
-		rc = -EPERM;
-	return rc;
+	return audit_do_config_change("audit_failure", &audit_failure, state,
+				      loginuid, sid);
 }
 
 static int kauditd_thread(void *dummy)
@@ -405,7 +355,11 @@ static int kauditd_thread(void *dummy)
 					audit_pid = 0;
 				}
 			} else {
-				printk(KERN_NOTICE "%s\n", skb->data + NLMSG_SPACE(0));
+				if (printk_ratelimit())
+					printk(KERN_NOTICE "%s\n", skb->data +
+						NLMSG_SPACE(0));
+				else
+					audit_log_lost("printk limit exceeded\n");
 				kfree_skb(skb);
 			}
 		} else {
@@ -573,6 +527,33 @@ static int audit_netlink_ok(struct sk_buff *skb, u16 msg_type)
 	return err;
 }
 
+static int audit_log_common_recv_msg(struct audit_buffer **ab, u16 msg_type,
+				     u32 pid, u32 uid, uid_t auid, u32 sid)
+{
+	int rc = 0;
+	char *ctx = NULL;
+	u32 len;
+
+	if (!audit_enabled) {
+		*ab = NULL;
+		return rc;
+	}
+
+	*ab = audit_log_start(NULL, GFP_KERNEL, msg_type);
+	audit_log_format(*ab, "user pid=%d uid=%u auid=%u",
+			 pid, uid, auid);
+	if (sid) {
+		rc = selinux_sid_to_string(sid, &ctx, &len);
+		if (rc)
+			audit_log_format(*ab, " ssid=%u", sid);
+		else
+			audit_log_format(*ab, " subj=%s", ctx);
+		kfree(ctx);
+	}
+
+	return rc;
+}
+
 static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
 {
 	u32			uid, pid, seq, sid;
@@ -583,7 +564,7 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
 	u16			msg_type = nlh->nlmsg_type;
 	uid_t			loginuid; /* loginuid of sender */
 	struct audit_sig_info   *sig_data;
-	char			*ctx;
+	char			*ctx = NULL;
 	u32			len;
 
 	err = audit_netlink_ok(skb, msg_type);
@@ -634,23 +615,14 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
 			if (err < 0) return err;
 		}
 		if (status_get->mask & AUDIT_STATUS_PID) {
-			int old   = audit_pid;
-			if (sid) {
-				if ((err = selinux_sid_to_string(
-						sid, &ctx, &len)))
-					return err;
-				else
-					audit_log(NULL, GFP_KERNEL,
-						AUDIT_CONFIG_CHANGE,
-						"audit_pid=%d old=%d by auid=%u subj=%s",
-						status_get->pid, old,
-						loginuid, ctx);
-				kfree(ctx);
-			} else
-				audit_log(NULL, GFP_KERNEL, AUDIT_CONFIG_CHANGE,
-					"audit_pid=%d old=%d by auid=%u",
-					  status_get->pid, old, loginuid);
-			audit_pid = status_get->pid;
+			int new_pid = status_get->pid;
+
+			if (audit_enabled != AUDIT_OFF)
+				audit_log_config_change("audit_pid", new_pid,
+							audit_pid, loginuid,
+							sid, 1);
+
+			audit_pid = new_pid;
 		}
 		if (status_get->mask & AUDIT_STATUS_RATE_LIMIT)
 			err = audit_set_rate_limit(status_get->rate_limit,
@@ -673,64 +645,35 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
 				if (err)
 					break;
 			}
-			ab = audit_log_start(NULL, GFP_KERNEL, msg_type);
-			if (ab) {
-				audit_log_format(ab,
-						 "user pid=%d uid=%u auid=%u",
-						 pid, uid, loginuid);
-				if (sid) {
-					if (selinux_sid_to_string(
-							sid, &ctx, &len)) {
-						audit_log_format(ab,
-							" ssid=%u", sid);
-						/* Maybe call audit_panic? */
-					} else
-						audit_log_format(ab,
-							" subj=%s", ctx);
-					kfree(ctx);
-				}
-				if (msg_type != AUDIT_USER_TTY)
-					audit_log_format(ab, " msg='%.1024s'",
-							 (char *)data);
-				else {
-					int size;
-
-					audit_log_format(ab, " msg=");
-					size = nlmsg_len(nlh);
-					audit_log_n_untrustedstring(ab, size,
-								    data);
-				}
-				audit_set_pid(ab, pid);
-				audit_log_end(ab);
+			audit_log_common_recv_msg(&ab, msg_type, pid, uid,
+						  loginuid, sid);
+
+			if (msg_type != AUDIT_USER_TTY)
+				audit_log_format(ab, " msg='%.1024s'",
+						 (char *)data);
+			else {
+				int size;
+
+				audit_log_format(ab, " msg=");
+				size = nlmsg_len(nlh);
+				audit_log_n_untrustedstring(ab, size,
+							    data);
 			}
+			audit_set_pid(ab, pid);
+			audit_log_end(ab);
 		}
 		break;
 	case AUDIT_ADD:
 	case AUDIT_DEL:
 		if (nlmsg_len(nlh) < sizeof(struct audit_rule))
 			return -EINVAL;
-		if (audit_enabled == 2) {
-			ab = audit_log_start(NULL, GFP_KERNEL,
-					AUDIT_CONFIG_CHANGE);
-			if (ab) {
-				audit_log_format(ab,
-						 "pid=%d uid=%u auid=%u",
-						 pid, uid, loginuid);
-				if (sid) {
-					if (selinux_sid_to_string(
-							sid, &ctx, &len)) {
-						audit_log_format(ab,
-							" ssid=%u", sid);
-						/* Maybe call audit_panic? */
-					} else
-						audit_log_format(ab,
-							" subj=%s", ctx);
-					kfree(ctx);
-				}
-				audit_log_format(ab, " audit_enabled=%d res=0",
-					audit_enabled);