Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace

Pull user namespace changes from Eric Biederman:
 "This is a mostly modest set of changes to enable basic user namespace
  support.  This allows the code to code to compile with user namespaces
  enabled and removes the assumption there is only the initial user
  namespace.  Everything is converted except for the most complex of the
  filesystems: autofs4, 9p, afs, ceph, cifs, coda, fuse, gfs2, ncpfs,
  nfs, ocfs2 and xfs as those patches need a bit more review.

  The strategy is to push kuid_t and kgid_t values are far down into
  subsystems and filesystems as reasonable.  Leaving the make_kuid and
  from_kuid operations to happen at the edge of userspace, as the values
  come off the disk, and as the values come in from the network.
  Letting compile type incompatible compile errors (present when user
  namespaces are enabled) guide me to find the issues.

  The most tricky areas have been the places where we had an implicit
  union of uid and gid values and were storing them in an unsigned int.
  Those places were converted into explicit unions.  I made certain to
  handle those places with simple trivial patches.

  Out of that work I discovered we have generic interfaces for storing
  quota by projid.  I had never heard of the project identifiers before.
  Adding full user namespace support for project identifiers accounts
  for most of the code size growth in my git tree.

  Ultimately there will be work to relax privlige checks from
  "capable(FOO)" to "ns_capable(user_ns, FOO)" where it is safe allowing
  root in a user names to do those things that today we only forbid to
  non-root users because it will confuse suid root applications.

  While I was pushing kuid_t and kgid_t changes deep into the audit code
  I made a few other cleanups.  I capitalized on the fact we process
  netlink messages in the context of the message sender.  I removed
  usage of NETLINK_CRED, and started directly using current->tty.

  Some of these patches have also made it into maintainer trees, with no
  problems from identical code from different trees showing up in
  linux-next.

  After reading through all of this code I feel like I might be able to
  win a game of kernel trivial pursuit."

Fix up some fairly trivial conflicts in netfilter uid/git logging code.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace: (107 commits)
  userns: Convert the ufs filesystem to use kuid/kgid where appropriate
  userns: Convert the udf filesystem to use kuid/kgid where appropriate
  userns: Convert ubifs to use kuid/kgid
  userns: Convert squashfs to use kuid/kgid where appropriate
  userns: Convert reiserfs to use kuid and kgid where appropriate
  userns: Convert jfs to use kuid/kgid where appropriate
  userns: Convert jffs2 to use kuid and kgid where appropriate
  userns: Convert hpfs to use kuid and kgid where appropriate
  userns: Convert btrfs to use kuid/kgid where appropriate
  userns: Convert bfs to use kuid/kgid where appropriate
  userns: Convert affs to use kuid/kgid wherwe appropriate
  userns: On alpha modify linux_to_osf_stat to use convert from kuids and kgids
  userns: On ia64 deal with current_uid and current_gid being kuid and kgid
  userns: On ppc convert current_uid from a kuid before printing.
  userns: Convert s390 getting uid and gid system calls to use kuid and kgid
  userns: Convert s390 hypfs to use kuid and kgid where appropriate
  userns: Convert binder ipc to use kuids
  userns: Teach security_path_chown to take kuids and kgids
  userns: Add user namespace support to IMA
  userns: Convert EVM to deal with kuids and kgids in it's hmac computation
  ...

15 files changed, 457 insertions, 219 deletions

diff --git a/kernel/acct.c b/kernel/acct.c
index 02e6167a53b..6cd7529c9e6 100644
--- a/kernel/acct.c
+++ b/kernel/acct.c
@@ -507,8 +507,8 @@ static void do_acct_process(struct bsd_acct_struct *acct,
 	do_div(elapsed, AHZ);
 	ac.ac_btime = get_seconds() - elapsed;
 	/* we really need to bite the bullet and change layout */
-	ac.ac_uid = orig_cred->uid;
-	ac.ac_gid = orig_cred->gid;
+	ac.ac_uid = from_kuid_munged(file->f_cred->user_ns, orig_cred->uid);
+	ac.ac_gid = from_kgid_munged(file->f_cred->user_ns, orig_cred->gid);
 #if ACCT_VERSION==2
 	ac.ac_ahz = AHZ;
 #endif
diff --git a/kernel/audit.c b/kernel/audit.c
index ea3b7b6191c..511488a7bc7 100644
--- a/kernel/audit.c
+++ b/kernel/audit.c
@@ -61,6 +61,7 @@
 #include <linux/netlink.h>
 #include <linux/freezer.h>
 #include <linux/tty.h>
+#include <linux/pid_namespace.h>
 
 #include "audit.h"
 
@@ -104,7 +105,7 @@ static int	audit_backlog_wait_time = 60 * HZ;
 static int	audit_backlog_wait_overflow = 0;
 
 /* The identity of the user shutting down the audit system. */
-uid_t		audit_sig_uid = -1;
+kuid_t		audit_sig_uid = INVALID_UID;
 pid_t		audit_sig_pid = -1;
 u32		audit_sig_sid = 0;
 
@@ -264,7 +265,7 @@ void audit_log_lost(const char *message)
 }
 
 static int audit_log_config_change(char *function_name, int new, int old,
-				   uid_t loginuid, u32 sessionid, u32 sid,
+				   kuid_t loginuid, u32 sessionid, u32 sid,
 				   int allow_changes)
 {
 	struct audit_buffer *ab;
@@ -272,7 +273,7 @@ static int audit_log_config_change(char *function_name, int new, int old,
 
 	ab = audit_log_start(NULL, GFP_KERNEL, AUDIT_CONFIG_CHANGE);
 	audit_log_format(ab, "%s=%d old=%d auid=%u ses=%u", function_name, new,
-			 old, loginuid, sessionid);
+			 old, from_kuid(&init_user_ns, loginuid), sessionid);
 	if (sid) {
 		char *ctx = NULL;
 		u32 len;
@@ -292,7 +293,7 @@ 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 sessionid,
+				  int new, kuid_t loginuid, u32 sessionid,
 				  u32 sid)
 {
 	int allow_changes, rc = 0, old = *to_change;
@@ -319,21 +320,21 @@ 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 sessionid,
+static int audit_set_rate_limit(int limit, kuid_t loginuid, u32 sessionid,
 				u32 sid)
 {
 	return audit_do_config_change("audit_rate_limit", &audit_rate_limit,
 				      limit, loginuid, sessionid, sid);
 }
 
-static int audit_set_backlog_limit(int limit, uid_t loginuid, u32 sessionid,
+static int audit_set_backlog_limit(int limit, kuid_t loginuid, u32 sessionid,
 				   u32 sid)
 {
 	return audit_do_config_change("audit_backlog_limit", &audit_backlog_limit,
 				      limit, loginuid, sessionid, sid);
 }
 
-static int audit_set_enabled(int state, uid_t loginuid, u32 sessionid, u32 sid)
+static int audit_set_enabled(int state, kuid_t loginuid, u32 sessionid, u32 sid)
 {
 	int rc;
 	if (state < AUDIT_OFF || state > AUDIT_LOCKED)
@@ -348,7 +349,7 @@ static int audit_set_enabled(int state, uid_t loginuid, u32 sessionid, u32 sid)
 	return rc;
 }
 
-static int audit_set_failure(int state, uid_t loginuid, u32 sessionid, u32 sid)
+static int audit_set_failure(int state, kuid_t loginuid, u32 sessionid, u32 sid)
 {
 	if (state != AUDIT_FAIL_SILENT
 	    && state != AUDIT_FAIL_PRINTK
@@ -467,24 +468,6 @@ static int kauditd_thread(void *dummy)
 	return 0;
 }
 
-static int audit_prepare_user_tty(pid_t pid, uid_t loginuid, u32 sessionid)
-{
-	struct task_struct *tsk;
-	int err;
-
-	rcu_read_lock();
-	tsk = find_task_by_vpid(pid);
-	if (!tsk) {
-		rcu_read_unlock();
-		return -ESRCH;
-	}
-	get_task_struct(tsk);
-	rcu_read_unlock();
-	err = tty_audit_push_task(tsk, loginuid, sessionid);
-	put_task_struct(tsk);
-	return err;
-}
-
 int audit_send_list(void *_dest)
 {
 	struct audit_netlink_list *dest = _dest;
@@ -588,6 +571,11 @@ static int audit_netlink_ok(struct sk_buff *skb, u16 msg_type)
 {
 	int err = 0;
 
+	/* Only support the initial namespaces for now. */
+	if ((current_user_ns() != &init_user_ns) ||
+	    (task_active_pid_ns(current) != &init_pid_ns))
+		return -EPERM;
+
 	switch (msg_type) {
 	case AUDIT_GET:
 	case AUDIT_LIST:
@@ -619,8 +607,7 @@ 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 ses,
-				     u32 sid)
+				     kuid_t auid, u32 ses, u32 sid)
 {
 	int rc = 0;
 	char *ctx = NULL;
@@ -633,7 +620,9 @@ 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, "pid=%d uid=%u auid=%u ses=%u",
-			 pid, uid, auid, ses);
+			 task_tgid_vnr(current),
+			 from_kuid(&init_user_ns, current_uid()),
+			 from_kuid(&init_user_ns, auid), ses);
 	if (sid) {
 		rc = security_secid_to_secctx(sid, &ctx, &len);
 		if (rc)
@@ -649,13 +638,13 @@ static int audit_log_common_recv_msg(struct audit_buffer **ab, u16 msg_type,
 
 static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
 {
-	u32			uid, pid, seq, sid;
+	u32			seq, sid;
 	void			*data;
 	struct audit_status	*status_get, status_set;
 	int			err;
 	struct audit_buffer	*ab;
 	u16			msg_type = nlh->nlmsg_type;
-	uid_t			loginuid; /* loginuid of sender */
+	kuid_t			loginuid; /* loginuid of sender */
 	u32			sessionid;
 	struct audit_sig_info   *sig_data;
 	char			*ctx = NULL;
@@ -675,8 +664,6 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
 		return err;
 	}
 
-	pid  = NETLINK_CREDS(skb)->pid;
-	uid  = NETLINK_CREDS(skb)->uid;
 	loginuid = audit_get_loginuid(current);
 	sessionid = audit_get_sessionid(current);
 	security_task_getsecid(current, &sid);
@@ -738,16 +725,16 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
 		if (!audit_enabled && msg_type != AUDIT_USER_AVC)
 			return 0;
 
-		err = audit_filter_user(&NETLINK_CB(skb));
+		err = audit_filter_user();
 		if (err == 1) {
 			err = 0;
 			if (msg_type == AUDIT_USER_TTY) {
-				err = audit_prepare_user_tty(pid, loginuid,
+				err = tty_audit_push_task(current, loginuid,
 							     sessionid);
 				if (err)
 					break;
 			}
-			audit_log_common_recv_msg(&ab, msg_type, pid, uid,
+			audit_log_common_recv_msg(&ab, msg_type,
 						  loginuid, sessionid, sid);
 
 			if (msg_type != AUDIT_USER_TTY)
@@ -763,7 +750,7 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
 					size--;
 				audit_log_n_untrustedstring(ab, data, size);
 			}
-			audit_set_pid(ab, pid);
+			audit_set_pid(ab, NETLINK_CB(skb).pid);
 			audit_log_end(ab);
 		}
 		break;
@@ -772,8 +759,8 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
 		if (nlmsg_len(nlh) < sizeof(struct audit_rule))
 			return -EINVAL;
 		if (audit_enabled == AUDIT_LOCKED) {
-			audit_log_common_recv_msg(&ab, AUDIT_CONFIG_CHANGE, pid,
-						  uid, loginuid, sessionid, sid);
+			audit_log_common_recv_msg(&ab, AUDIT_CONFIG_CHANGE,
+						  loginuid, sessionid, sid);
 
 			audit_log_format(ab, " audit_enabled=%d res=0",
 					 audit_enabled);
@@ -783,7 +770,7 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
 		/* fallthrough */
 	case AUDIT_LIST:
 		err = audit_receive_filter(msg_type, NETLINK_CB(skb).pid,
-					   uid, seq, data, nlmsg_len(nlh),
+					   seq, data, nlmsg_len(nlh),
 					   loginuid, sessionid, sid);
 		break;
 	case AUDIT_ADD_RULE:
@@ -791,8 +778,8 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
 		if (nlmsg_len(nlh) < sizeof(struct audit_rule_data))
 			return -EINVAL;
 		if (audit_enabled == AUDIT_LOCKED) {
-			audit_log_common_recv_msg(&ab, AUDIT_CONFIG_CHANGE, pid,
-						  uid, loginuid, sessionid, sid);
+			audit_log_common_recv_msg(&ab, AUDIT_CONFIG_CHANGE,
+						  loginuid, sessionid, sid);
 
 			audit_log_format(ab, " audit_enabled=%d res=0",
 					 audit_enabled);
@@ -802,14 +789,14 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
 		/* fallthrough */
 	case AUDIT_LIST_RULES:
 		err = audit_receive_filter(msg_type, NETLINK_CB(skb).pid,
-					   uid, seq, data, nlmsg_len(nlh),
+					   seq, data, nlmsg_len(nlh),
 					   loginuid, sessionid, sid);
 		break;
 	case AUDIT_TRIM:
 		audit_trim_trees();
 
-		audit_log_common_recv_msg(&ab, AUDIT_CONFIG_CHANGE, pid,
-					  uid, loginuid, sessionid, sid);
+		audit_log_common_recv_msg(&ab, AUDIT_CONFIG_CHANGE,
+					  loginuid, sessionid, sid);
 
 		audit_log_format(ab, " op=trim res=1");
 		audit_log_end(ab);
@@ -840,8 +827,8 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
 		/* OK, here comes... */
 		err = audit_tag_tree(old, new);
 
-		audit_log_common_recv_msg(&ab, AUDIT_CONFIG_CHANGE, pid,
-					  uid, loginuid, sessionid, sid);
+		audit_log_common_recv_msg(&ab, AUDIT_CONFIG_CHANGE,
+					  loginuid, sessionid, sid);
 
 		audit_log_format(ab, " op=make_equiv old=");
 		audit_log_untrustedstring(ab, old);
@@ -866,7 +853,7 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
 				security_release_secctx(ctx, len);
 			return -ENOMEM;
 		}
-		sig_data->uid = audit_sig_uid;
+		sig_data->uid = from_kuid(&init_user_ns, audit_sig_uid);
 		sig_data->pid = audit_sig_pid;
 		if (audit_sig_sid) {
 			memcpy(sig_data->ctx, ctx, len);
@@ -878,41 +865,29 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
 		break;
 	case AUDIT_TTY_GET: {
 		struct audit_tty_status s;
-		struct task_struct *tsk;
-		unsigned long flags;
-
-		rcu_read_lock();
-		tsk = find_task_by_vpid(pid);
-		if (tsk && lock_task_sighand(tsk, &flags)) {
-			s.enabled = tsk->signal->audit_tty != 0;
-			unlock_task_sighand(tsk, &flags);
-		} else
-			err = -ESRCH;
-		rcu_read_unlock();
-
-		if (!err)
-			audit_send_reply(NETLINK_CB(skb).pid, seq,
-					 AUDIT_TTY_GET, 0, 0, &s, sizeof(s));
+		struct task_struct *tsk = current;
+
+		spin_lock_irq(&tsk->sighand->siglock);
+		s.enabled = tsk->signal->audit_tty != 0;
+		spin_unlock_irq(&tsk->sighand->siglock);
+
+		audit_send_reply(NETLINK_CB(skb).pid, seq,
+				 AUDIT_TTY_GET, 0, 0, &s, sizeof(s));
 		break;
 	}
 	case AUDIT_TTY_SET: {
 		struct audit_tty_status *s;
-		struct task_struct *tsk;
-		unsigned long flags;
+		struct task_struct *tsk = current;
 
 		if (nlh->nlmsg_len < sizeof(struct audit_tty_status))
 			return -EINVAL;
 		s = data;
 		if (s->enabled != 0 && s->enabled != 1)
 			return -EINVAL;
-		rcu_read_lock();
-		tsk = find_task_by_vpid(pid);
-		if (tsk && lock_task_sighand(tsk, &flags)) {
-			tsk->signal->audit_tty = s->enabled != 0;
-			unlock_task_sighand(tsk, &flags);
-		} else
-			err = -ESRCH;
-		rcu_read_unlock();
+
+		spin_lock_irq(&tsk->sighand->siglock);
+		tsk->signal->audit_tty = s->enabled != 0;
+		spin_unlock_irq(&tsk->sighand->siglock);
 		break;
 	}
 	default:
diff --git a/kernel/audit.h b/kernel/audit.h
index 81676680337..9eb3d79482b 100644
--- a/kernel/audit.h
+++ b/kernel/audit.h
@@ -76,6 +76,8 @@ static inline int audit_hash_ino(u32 ino)
 
 extern int audit_match_class(int class, unsigned syscall);
 extern int audit_comparator(const u32 left, const u32 op, const u32 right);
+extern int audit_uid_comparator(kuid_t left, u32 op, kuid_t right);
+extern int audit_gid_comparator(kgid_t left, u32 op, kgid_t right);
 extern int audit_compare_dname_path(const char *dname, const char *path,
 				    int *dirlen);
 extern struct sk_buff *	    audit_make_reply(int pid, int seq, int type,
@@ -144,7 +146,7 @@ extern void audit_kill_trees(struct list_head *);
 extern char *audit_unpack_string(void **, size_t *, size_t);
 
 extern pid_t audit_sig_pid;
-extern uid_t audit_sig_uid;
+extern kuid_t audit_sig_uid;
 extern u32 audit_sig_sid;
 
 #ifdef CONFIG_AUDITSYSCALL
diff --git a/kernel/audit_watch.c b/kernel/audit_watch.c
index 3823281401b..1c22ec3d87b 100644
--- a/kernel/audit_watch.c
+++ b/kernel/audit_watch.c
@@ -241,7 +241,7 @@ static void audit_watch_log_rule_change(struct audit_krule *r, struct audit_watc
 		struct audit_buffer *ab;
 		ab = audit_log_start(NULL, GFP_NOFS, AUDIT_CONFIG_CHANGE);
 		audit_log_format(ab, "auid=%u ses=%u op=",
-				 audit_get_loginuid(current),
+				 from_kuid(&init_user_ns, audit_get_loginuid(current)),
 				 audit_get_sessionid(current));
 		audit_log_string(ab, op);
 		audit_log_format(ab, " path=");
diff --git a/kernel/auditfilter.c b/kernel/auditfilter.c
index a6c3f1abd20..c4bcdbaf4d4 100644
--- a/kernel/auditfilter.c
+++ b/kernel/auditfilter.c
@@ -342,6 +342,8 @@ static struct audit_entry *audit_rule_to_entry(struct audit_rule *rule)
 
 		f->type = rule->fields[i] & ~(AUDIT_NEGATE|AUDIT_OPERATORS);
 		f->val = rule->values[i];
+		f->uid = INVALID_UID;
+		f->gid = INVALID_GID;
 
 		err = -EINVAL;
 		if (f->op == Audit_bad)
@@ -350,16 +352,32 @@ static struct audit_entry *audit_rule_to_entry(struct audit_rule *rule)
 		switch(f->type) {
 		default:
 			goto exit_free;
-		case AUDIT_PID:
 		case AUDIT_UID:
 		case AUDIT_EUID:
 		case AUDIT_SUID:
 		case AUDIT_FSUID:
+		case AUDIT_LOGINUID:
+			/* bit ops not implemented for uid comparisons */
+			if (f->op == Audit_bitmask || f->op == Audit_bittest)
+				goto exit_free;
+
+			f->uid = make_kuid(current_user_ns(), f->val);
+			if (!uid_valid(f->uid))
+				goto exit_free;
+			break;
 		case AUDIT_GID:
 		case AUDIT_EGID:
 		case AUDIT_SGID:
 		case AUDIT_FSGID:
-		case AUDIT_LOGINUID:
+			/* bit ops not implemented for gid comparisons */
+			if (f->op == Audit_bitmask || f->op == Audit_bittest)
+				goto exit_free;
+
+			f->gid = make_kgid(current_user_ns(), f->val);
+			if (!gid_valid(f->gid))
+				goto exit_free;
+			break;
+		case AUDIT_PID:
 		case AUDIT_PERS:
 		case AUDIT_MSGTYPE:
 		case AUDIT_PPID:
@@ -437,19 +455,39 @@ static struct audit_entry *audit_data_to_entry(struct audit_rule_data *data,
 
 		f->type = data->fields[i];
 		f->val = data->values[i];
+		f->uid = INVALID_UID;
+		f->gid = INVALID_GID;
 		f->lsm_str = NULL;
 		f->lsm_rule = NULL;
 		switch(f->type) {
-		case AUDIT_PID:
 		case AUDIT_UID:
 		case AUDIT_EUID:
 		case AUDIT_SUID:
 		case AUDIT_FSUID:
+		case AUDIT_LOGINUID:
+		case AUDIT_OBJ_UID:
+			/* bit ops not implemented for uid comparisons */
+			if (f->op == Audit_bitmask || f->op == Audit_bittest)
+				goto exit_free;
+
+			f->uid = make_kuid(current_user_ns(), f->val);
+			if (!uid_valid(f->uid))
+				goto exit_free;
+			break;
 		case AUDIT_GID:
 		case AUDIT_EGID:
 		case AUDIT_SGID:
 		case AUDIT_FSGID:
-		case AUDIT_LOGINUID:
+		case AUDIT_OBJ_GID:
+			/* bit ops not implemented for gid comparisons */
+			if (f->op == Audit_bitmask || f->op == Audit_bittest)
+				goto exit_free;
+
+			f->gid = make_kgid(current_user_ns(), f->val);
+			if (!gid_valid(f->gid))
+				goto exit_free;
+			break;
+		case AUDIT_PID:
 		case AUDIT_PERS:
 		case AUDIT_MSGTYPE:
 		case AUDIT_PPID:
@@ -461,8 +499,6 @@ static struct audit_entry *audit_data_to_entry(struct audit_rule_data *data,
 		case AUDIT_ARG1:
 		case AUDIT_ARG2:
 		case AUDIT_ARG3:
-		case AUDIT_OBJ_UID:
-		case AUDIT_OBJ_GID:
 			break;
 		case AUDIT_ARCH:
 			entry->rule.arch_f = f;
@@ -707,6 +743,23 @@ static int audit_compare_rule(struct audit_krule *a, struct audit_krule *b)
 			if (strcmp(a->filterkey, b->filterkey))
 				return 1;
 			break;
+		case AUDIT_UID:
+		case AUDIT_EUID:
+		case AUDIT_SUID:
+		case AUDIT_FSUID:
+		case AUDIT_LOGINUID:
+		case AUDIT_OBJ_UID:
+			if (!uid_eq(a->fields[i].uid, b->fields[i].uid))
+				return 1;
+			break;
+		case AUDIT_GID:
+		case AUDIT_EGID:
+		case AUDIT_SGID:
+		case AUDIT_FSGID:
+		case AUDIT_OBJ_GID:
+			if (!gid_eq(a->fields[i].gid, b->fields[i].gid))
+				return 1;
+			break;
 		default:
 			if (a->fields[i].val != b->fields[i].val)
 				return 1;
@@ -1056,7 +1109,7 @@ 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 sessionid, u32 sid,
+static void audit_log_rule_change(kuid_t loginuid, u32 sessionid, u32 sid,
 				  char *action, struct audit_krule *rule,
 				  int res)
 {
@@ -1068,7 +1121,8 @@ static void audit_log_rule_change(uid_t loginuid, u32 sessionid, u32 sid,
 	ab = audit_log_start(NULL, GFP_KERNEL, AUDIT_CONFIG_CHANGE);
 	if (!ab)
 		return;
-	audit_log_format(ab, "auid=%u ses=%u", loginuid, sessionid);
+	audit_log_format(ab, "auid=%u ses=%u",
+			 from_kuid(&init_user_ns, loginuid), sessionid);
 	if (sid) {
 		char *ctx = NULL;
 		u32 len;
@@ -1098,8 +1152,8 @@ static void audit_log_rule_change(uid_t loginuid, u32 sessionid, u32 sid,
  * @sessionid: sessionid for netlink audit message
  * @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 sessionid, u32 sid)
+int audit_receive_filter(int type, int pid, int seq, void *data,
+			 size_t datasz, kuid_t loginuid, u32 sessionid, u32 sid)
 {
 	struct task_struct *tsk;
 	struct audit_netlink_list *dest;
@@ -1198,6 +1252,52 @@ int audit_comparator(u32 left, u32 op, u32 right)
 	}
 }
 
+int audit_uid_comparator(kuid_t left, u32 op, kuid_t right)
+{
+	switch (op) {
+	case Audit_equal:
+		return uid_eq(left, right);
+	case Audit_not_equal:
+		return !uid_eq(left, right);
+	case Audit_lt:
+		return uid_lt(left, right);
+	case Audit_le:
+		return uid_lte(left, right);
+	case Audit_gt:
+		return uid_gt(left, right);
+	case Audit_ge:
+		return uid_gte(left, right);
+	case Audit_bitmask:
+	case Audit_bittest:
+	default:
+		BUG();
+		return 0;
+	}
+}
+
+int audit_gid_comparator(kgid_t left, u32 op, kgid_t right)
+{
+	switch (op) {
+	case Audit_equal:
+		return gid_eq(left, right);
+	case Audit_not_equal:
+		return !gid_eq(left, right);
+	case Audit_lt:
+		return gid_lt(left, right);
+	case Audit_le:
+		return gid_lte(left, right);
+	case Audit_gt:
+		return gid_gt(left, right);
+	case Audit_ge:
+		return gid_gte(left, right);
+	case Audit_bitmask:
+	case Audit_bittest:
+	default:
+		BUG();
+		return 0;
+	}
+}
+
 /* Compare given dentry name with last component in given path,
  * return of 0 indicates a match. */
 int audit_compare_dname_path(const char *dname, const char *path,
@@ -1236,8 +1336,7 @@ int audit_compare_dname_path(const char *dname, const char *path,
 	return strncmp(p, dname, dlen);
 }
 
-static int audit_filter_user_rules(struct netlink_skb_parms *cb,
-				   struct audit_krule *rule,
+static int audit_filter_user_rules(struct audit_krule *rule,
 				   enum audit_state *state)
 {
 	int i;
@@ -1249,17 +1348,17 @@ static int audit_filter_user_rules(struct netlink_skb_parms *cb,
 
 		switch (f->type) {
 		case AUDIT_PID:
-			result = audit_comparator(cb->creds.pid, f->op, f->val);
+			result = audit_comparator(task_pid_vnr(current), f->op, f->val);
 			break;
 		case AUDIT_UID:
-			result = audit_comparator(cb->creds.uid, f->op, f->val);
+			result = audit_uid_comparator(current_uid(), f->op, f->uid);
 			break;
 		case AUDIT_GID:
-			result = audit_comparator(cb->creds.gid, f->op, f->val);
+			result = audit_gid_comparator(current_gid(), f->op, f->gid);
 			break;
 		case AUDIT_LOGINUID:
-			result = audit_comparator(audit_get_loginuid(current),
-						  f->op, f->val);
+			result = audit_uid_comparator(audit_get_loginuid(current),
+						  f->op, f->uid);
 			break;
 		case AUDIT_SUBJ_USER:
 		case AUDIT_SUBJ_ROLE:
@@ -1287,7 +1386,7 @@ static int audit_filter_user_rules(struct netlink_skb_parms *cb,
 	return 1;
 }
 
-int audit_filter_user(struct netlink_skb_parms *cb)
+int audit_filter_user(void)
 {
 	enum audit_state state = AUDIT_DISABLED;
 	struct audit_entry *e;
@@ -1295,7 +1394,7 @@ int audit_filter_user(struct netlink_skb_parms *cb)
 
 	rcu_read_lock();
 	list_for_each_entry_rcu(e, &audit_filter_list[AUDIT_FILTER_USER], list) {
-		if (audit_filter_user_rules(cb, &e->rule, &state)) {
+		if (audit_filter_user_rules(&e->rule, &state)) {
 			if (state == AUDIT_DISABLED)
 				ret = 0;
 			break;
diff --git a/kernel/auditsc.c b/kernel/auditsc.c
index 4b96415527b..ff4798fcb48 100644
--- a/kernel/auditsc.c
+++ b/kernel/auditsc.c
@@ -113,8 +113,8 @@ struct audit_names {
 	unsigned long	ino;
 	dev_t		dev;
 	umode_t		mode;
-	uid_t		uid;
-	gid_t		gid;
+	kuid_t		uid;
+	kgid_t		gid;
 	dev_t		rdev;
 	u32		osid;
 	struct audit_cap_data fcap;
@@ -149,8 +149,8 @@ struct audit_aux_data_execve {
 struct audit_aux_data_pids {
 	struct audit_aux_data	d;
 	pid_t			target_pid[AUDIT_AUX_PIDS];
-	uid_t			target_auid[AUDIT_AUX_PIDS];
-	uid_t			target_uid[AUDIT_AUX_PIDS];
+	kuid_t			target_auid[AUDIT_AUX_PIDS];
+	kuid_t			target_uid[AUDIT_AUX_PIDS];
 	unsigned int		target_sessionid[AUDIT_AUX_PIDS];
 	u32			target_sid[AUDIT_AUX_PIDS];
 	char 			target_comm[AUDIT_AUX_PIDS][TASK_COMM_LEN];
@@ -208,14 +208,14 @@ struct audit_context {
 	size_t sockaddr_len;
 				/* Save things to print about task_struct */
 	pid_t		    pid, ppid;
-	uid_t		    uid, euid, suid, fsuid;
-	gid_t		    gid, egid, sgid, fsgid;
+	kuid_t		    uid, euid, suid, fsuid;
+	kgid_t		    gid, egid, sgid, fsgid;
 	unsigned long	    personality;
 	int		    arch;
 
 	pid_t		    target_pid;
-	uid_t		    target_auid;
-	uid_t		    target_uid;
+	kuid_t		    target_auid;
+	kuid_t		    target_uid;
 	unsigned int	    target_sessionid;
 	u32		    target_sid;
 	char		    target_comm[TASK_COMM_LEN];
@@ -231,8 +231,8 @@ struct audit_context {
 			long args[6];
 		} socketcall;
 		struct {
-			uid_t			uid;
-			gid_t			gid;
+			kuid_t			uid;
+			kgid_t			gid;
 			umode_t			mode;
 			u32			osid;
 			int			has_perm;
@@ -464,37 +464,47 @@ static int match_tree_refs(struct audit_context *ctx, struct audit_tree *tree)
 	return 0;
 }
 
-static int audit_compare_id(uid_t uid1,
-			    struct audit_names *name,
-			    unsigned long name_offset,
-			    struct audit_field *f,
-			    struct audit_context *ctx)
+static int audit_compare_uid(kuid_t uid,
+			     struct audit_names *name,
+			     struct audit_field *f,
+			     struct audit_context *ctx)
 {
 	struct audit_names *n;
-	unsigned long addr;
-	uid_t uid2;
 	int rc;
-
-	BUILD_BUG_ON(sizeof(uid_t) != sizeof(gid_t));
-
+ 
 	if (name) {
-		addr = (unsigned long)name;
-		addr += name_offset;
-
-		uid2 = *(uid_t *)addr;
-		rc = audit_comparator(uid1, f->op, uid2);
+		rc = audit_uid_comparator(uid, f->op, name->uid);
 		if (rc)
 			return rc;
 	}
-
+ 
 	if (ctx) {
 		list_for_each_entry(n, &ctx->names_list, list) {
-			addr = (unsigned long)n;
-			addr += name_offset;
-
-			uid2 = *(uid_t *)addr;
+			rc = audit_uid_comparator(uid, f->op, n->uid);
+			if (rc)
+				return rc;
+		}
+	}
+	return 0;
+}
 
-			rc = audit_comparator(uid1, f->op, uid2);
+static int audit_compare_gid(kgid_t gid,
+			     struct audit_names *name,
+			     struct audit_field *f,
+			     struct audit_context *ctx)
+{
+	struct audit_names *n;
+	int rc;
+ 
+	if (name) {
+		rc = audit_gid_comparator(gid, f->op, name->gid);
+		if (rc)
+			return rc;
+	}
+ 
+	if (ctx) {
+		list_for_each_entry(n, &ctx->names_list, list) {
+			rc = audit_gid_comparator(gid, f->op, n->gid);
 			if (rc)
 				return rc;
 		}
@@ -511,80 +521,62 @@ static int audit_field_compare(struct task_struct *tsk,
 	switch (f->val) {
 	/* process to file object comparisons */
 	case AUDIT_COMPARE_UID_TO_OBJ_UID:
-		return audit_compare_id(cred->uid,
-					name, offsetof(struct audit_names, uid),
-					f, ctx);
+		return audit_compare_uid(cred->uid, name, f, ctx);
 	case AUDIT_COMPARE_GID_TO_OBJ_GID:
-		return audit_compare_id(cred->gid,
-					name, offsetof(struct audit_names, gid),
-					f, ctx);
+		return audit_compare_gid(cred->gid, name, f, ctx);
 	case AUDIT_COMPARE_EUID_TO_OBJ_UID:
-		return audit_compare_id(cred->euid,
-					name, offsetof(struct audit_names, uid),
-					f, ctx);
+		return audit_compare_uid(cred->euid, name, f, ctx);
 	case AUDIT_COMPARE_EGID_TO_OBJ_GID:
-		return audit_compare_id(cred->egid,
-					name, offsetof(struct audit_names, gid),
-					f, ctx);
+		return audit_compare_gid(cred->egid, name, f, ctx);
 	case AUDIT_COMPARE_AUID_TO_OBJ_UID:
-		return audit_compare_id(tsk->loginuid,
-					name, offsetof(struct audit_names, uid),
-					f, ctx);
+		return audit_compare_uid(tsk->loginuid, name, f, ctx);
 	case AUDIT_COMPARE_SUID_TO_OBJ_UID:
-		return audit_compare_id(cred->suid,
-					name, offsetof(struct audit_names, uid),
-					f, ctx);
+		return audit_compare_uid(cred->suid, name, f, ctx);
 	case AUDIT_COMPARE_SGID_TO_OBJ_GID:
-		return audit_compare_id(cred->sgid,
-					name, offsetof(struct audit_names, gid),
-					f, ctx);
+		return audit_compare_gid(cred->sgid, name, f, ctx);
 	case AUDIT_COMPARE_FSUID_TO_OBJ_UID:
-		return audit_compare_id(cred->fsuid,
-					name, offsetof(struct audit_names, uid),
-					f, ctx);
+		return audit_compare_uid(cred->fsuid, name, f, ctx);
 	case AUDIT_COMPARE_FSGID_TO_OBJ_GID:
-		return audit_compare_id(cred->fsgid,
-					name, offsetof(struct audit_names, gid),
-					f, ctx);
+		return audit_compare_gid(cred->fsgid, name, f, ctx);
 	/* uid comparisons */
 	case AUDIT_COMPARE_UID_TO_AUID:
-		return audit_comparator(cred->uid, f->op, tsk->loginuid);
+		return audit_uid_comparator(cred->uid, f->op, tsk->loginuid);
 	case AUDIT_COMPARE_UID_TO_EUID:
-		return audit_comparator(cred->uid, f->op, cred->euid);
+		return audit_uid_comparator(cred->uid, f->op, cred->euid);
 	case AUDIT_COMPARE_UID_TO_SUID:
-		return audit_comparator(cred->uid, f->op, cred->suid);
+		return audit_uid_comparator(cred->uid, f->op, cred->suid);
 	case AUDIT_COMPARE_UID_TO_FSUID:
-		return audit_comparator(cred->uid, f->op, cred->fsuid);
+		return audit_uid_comparator(cred->uid, f->op, cred->fsuid);
 	/* auid comparisons */
 	case AUDIT_COMPARE_AUID_TO_EUID:
-		return audit_comparator(tsk->loginuid, f->op, cred->euid);
+		return audit_uid_comparator(tsk->loginuid, f->op, cred->euid);
 	case AUDIT_COMPARE_AUID_TO_SUID:
-		return audit_comparator(tsk->loginuid, f->op, cred->suid);
+		return audit_uid_comparator(tsk->loginuid, f->op, cred->suid);
 	case AUDIT_COMPARE_AUID_TO_FSUID:
-		return audit_comparator(tsk->loginuid, f->op, cred->fsuid);
+		return audit_uid_comparator(tsk->loginuid, f->op, cred->fsuid);
 	/* euid comparisons */
 	case AUDIT_COMPARE_EUID_TO_SUID:
-		return audit_comparator(cred->euid, f->op, cred->suid);
+		return audit_uid_comparator(cred->euid, f->op, cred->suid);
 	case AUDIT_COMPARE_EUID_TO_FSUID:
-		return audit_comparator(cred->euid, f->op, cred->fsuid);
+		return audit_uid_comparator(cred->euid, f->op, cred->fsuid);
 	/* suid comparisons */
 	case AUDIT_COMPARE_SUID_TO_FSUID:
-		return audit_comparator(cred->suid, f->op, cred->fsuid);
+		return audit_uid_comparator(cred->suid, f->op, cred->fsuid);
 	/* gid comparisons */
 	case AUDIT_COMPARE_GID_TO_EGID:
-		return audit_comparator(cred->gid, f->op, cred->egid);
+		return audit_gid_comparator(cred->gid, f->op, cred->egid);
 	case AUDIT_COMPARE_GID_TO_SGID:
-		return audit_comparator(cred->gid, f->op, cred->sgid);
+		return audit_gid_comparator(cred->gid, f->op, cred->sgid);
 	case AUDIT_COMPARE_GID_TO_FSGID:
-		return audit_comparator(cred->gid, f->op, cred->fsgid);
+		return audit_gid_comparator(cred->gid, f->op, cred->fsgid);
 	/* egid comparisons */
 	case AUDIT_COMPARE_EGID_TO_SGID:
-		return audit_comparator(cred->egid, f->op, cred->sgid);
+		return audit_gid_comparator(cred->egid, f->op, cred->sgid);
 	case AUDIT_COMPARE_EGID_TO_FSGID:
-		return audit_comparator(cred->egid, f->op, cred->fsgid);
+		return audit_gid_comparator(cred->egid, f->op, cred->fsgid);
 	/* sgid comparison */
 	case AUDIT_COMPARE_SGID_TO_FSGID:
-		return audit_comparator(cred->sgid, f->op, cred->fsgid);
+		return audit_gid_comparator(cred->sgid, f->op, cred->fsgid);
 	default:
 		WARN(1, "Missing AUDIT_COMPARE define.  Report as a bug\n");
 		return 0;
@@ -630,28 +622,28 @@ static int audit_filter_rules(struct task_struct *tsk,
 			}
 			break;
 		case AUDIT_UID:
-			result = audit_comparator(cred->uid, f->op, f->val);
+			result = audit_uid_comparator(cred->uid, f->op, f->uid);
 			break;
 		case AUDIT_EUID:
-			result = audit_comparator(cred->euid, f->op, f->val);
+			result = audit_uid_comparator(cred->euid, f->op, f->uid);
 			break;
 		case AUDIT_SUID:
-			result = audit_comparator(cred->suid, f->op, f->val);
+			result