Remove non-system bits from mac_system.c. Leave:

  Enforce_kld, enforce_system access control toggles.
  Access control checks for: kenv operation, kld operations,
    sysarch_ioperm(), acct(), nfsd(), reboot(), settime(), swapon(),
    swapoff(), sysctl().

Obtained from:	TrustedBSD Project
Sponsored by:	DARPA, Network Associates Laboratories

1 files changed, 2 insertions, 3692 deletions

diff --git a/sys/security/mac/mac_system.c b/sys/security/mac/mac_system.c
index db3ade9..e5041a2 100644
--- a/sys/security/mac/mac_system.c
+++ b/sys/security/mac/mac_system.c
@@ -1,12 +1,7 @@
 /*-
- * Copyright (c) 1999, 2000, 2001, 2002 Robert N. M. Watson
- * Copyright (c) 2001 Ilmar S. Habibulin
- * Copyright (c) 2001, 2002, 2003 Networks Associates Technology, Inc.
+ * Copyright (c) 2002, 2003 Networks Associates Technology, Inc.
  * All rights reserved.
  *
- * This software was developed by Robert Watson and Ilmar Habibulin for the
- * TrustedBSD Project.
- *
  * This software was developed for the FreeBSD Project in part by Network
  * Associates Laboratories, the Security Research Division of Network
  * Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"),
@@ -34,2482 +29,35 @@
  * SUCH DAMAGE.
  */
 
-/*
- * Framework for extensible kernel access control.  Kernel and userland
- * interface to the framework, policy registration and composition.
- */
-
 #include <sys/cdefs.h>
 __FBSDID("$FreeBSD$");
 
 #include "opt_mac.h"
-#include "opt_devfs.h"
 
 #include <sys/param.h>
-#include <sys/condvar.h>
-#include <sys/extattr.h>
-#include <sys/imgact.h>
 #include <sys/kernel.h>
 #include <sys/lock.h>
 #include <sys/malloc.h>
 #include <sys/mutex.h>
 #include <sys/mac.h>
-#include <sys/module.h>
-#include <sys/proc.h>
-#include <sys/sbuf.h>
 #include <sys/systm.h>
-#include <sys/sysproto.h>
-#include <sys/sysent.h>
 #include <sys/vnode.h>
-#include <sys/mount.h>
-#include <sys/file.h>
-#include <sys/namei.h>
-#include <sys/socket.h>
-#include <sys/pipe.h>
-#include <sys/socketvar.h>
 #include <sys/sysctl.h>
 
-#include <vm/vm.h>
-#include <vm/pmap.h>
-#include <vm/vm_map.h>
-#include <vm/vm_object.h>
-
 #include <sys/mac_policy.h>
 
-#include <fs/devfs/devfs.h>
-
-#include <net/bpfdesc.h>
-#include <net/if.h>
-#include <net/if_var.h>
-
-#include <netinet/in.h>
-#include <netinet/ip_var.h>
-
-#ifdef MAC
-
-/*
- * Declare that the kernel provides MAC support, version 1.  This permits
- * modules to refuse to be loaded if the necessary support isn't present,
- * even if it's pre-boot.
- */
-MODULE_VERSION(kernel_mac_support, 1);
-
-SYSCTL_DECL(_security);
-
-SYSCTL_NODE(_security, OID_AUTO, mac, CTLFLAG_RW, 0,
-    "TrustedBSD MAC policy controls");
-
-#if MAC_MAX_SLOTS > 32
-#error "MAC_MAX_SLOTS too large"
-#endif
-
-static unsigned int mac_max_slots = MAC_MAX_SLOTS;
-static unsigned int mac_slot_offsets_free = (1 << MAC_MAX_SLOTS) - 1;
-SYSCTL_UINT(_security_mac, OID_AUTO, max_slots, CTLFLAG_RD,
-    &mac_max_slots, 0, "");
-
-/*
- * Has the kernel started generating labeled objects yet?  All read/write
- * access to this variable is serialized during the boot process.  Following
- * the end of serialization, we don't update this flag; no locking.
- */
-static int	mac_late = 0;
-
-/*
- * Warn about EA transactions only the first time they happen.
- * Weak coherency, no locking.
- */
-static int	ea_warn_once = 0;
-
-/*
- * Flag to indicate whether or not we should allocate label storage for
- * new mbufs.  Since most dynamic policies we currently work with don't
- * rely on mbuf labeling, try to avoid paying the cost of mtag allocation
- * unless specifically notified of interest.  One result of this is
- * that if a dynamically loaded policy requests mbuf labels, it must
- * be able to deal with a NULL label being returned on any mbufs that
- * were already in flight when the policy was loaded.  Since the policy
- * already has to deal with uninitialized labels, this probably won't
- * be a problem.  Note: currently no locking.  Will this be a problem?
- */
-#ifndef MAC_ALWAYS_LABEL_MBUF
-static int	mac_labelmbufs = 0;
-#endif
-
-static int	mac_enforce_fs = 1;
-SYSCTL_INT(_security_mac, OID_AUTO, enforce_fs, CTLFLAG_RW,
-    &mac_enforce_fs, 0, "Enforce MAC policy on file system objects");
-TUNABLE_INT("security.mac.enforce_fs", &mac_enforce_fs);
+#include <security/mac/mac_internal.h>
 
 static int	mac_enforce_kld = 1;
 SYSCTL_INT(_security_mac, OID_AUTO, enforce_kld, CTLFLAG_RW,
     &mac_enforce_kld, 0, "Enforce MAC policy on kld operations");
 TUNABLE_INT("security.mac.enforce_kld", &mac_enforce_kld);
 
-static int	mac_enforce_network = 1;
-SYSCTL_INT(_security_mac, OID_AUTO, enforce_network, CTLFLAG_RW,
-    &mac_enforce_network, 0, "Enforce MAC policy on network packets");
-TUNABLE_INT("security.mac.enforce_network", &mac_enforce_network);
-
-static int	mac_enforce_pipe = 1;
-SYSCTL_INT(_security_mac, OID_AUTO, enforce_pipe, CTLFLAG_RW,
-    &mac_enforce_pipe, 0, "Enforce MAC policy on pipe operations");
-TUNABLE_INT("security.mac.enforce_pipe", &mac_enforce_pipe);
-
-static int	mac_enforce_process = 1;
-SYSCTL_INT(_security_mac, OID_AUTO, enforce_process, CTLFLAG_RW,
-    &mac_enforce_process, 0, "Enforce MAC policy on inter-process operations");
-TUNABLE_INT("security.mac.enforce_process", &mac_enforce_process);
-
-static int	mac_enforce_socket = 1;
-SYSCTL_INT(_security_mac, OID_AUTO, enforce_socket, CTLFLAG_RW,
-    &mac_enforce_socket, 0, "Enforce MAC policy on socket operations");
-TUNABLE_INT("security.mac.enforce_socket", &mac_enforce_socket);
-
 static int	mac_enforce_system = 1;
 SYSCTL_INT(_security_mac, OID_AUTO, enforce_system, CTLFLAG_RW,
     &mac_enforce_system, 0, "Enforce MAC policy on system operations");
 TUNABLE_INT("security.mac.enforce_system", &mac_enforce_system);
 
-static int	mac_enforce_vm = 1;
-SYSCTL_INT(_security_mac, OID_AUTO, enforce_vm, CTLFLAG_RW,
-    &mac_enforce_vm, 0, "Enforce MAC policy on vm operations");
-TUNABLE_INT("security.mac.enforce_vm", &mac_enforce_vm);
-
-static int	mac_mmap_revocation = 1;
-SYSCTL_INT(_security_mac, OID_AUTO, mmap_revocation, CTLFLAG_RW,
-    &mac_mmap_revocation, 0, "Revoke mmap access to files on subject "
-    "relabel");
-static int	mac_mmap_revocation_via_cow = 0;
-SYSCTL_INT(_security_mac, OID_AUTO, mmap_revocation_via_cow, CTLFLAG_RW,
-    &mac_mmap_revocation_via_cow, 0, "Revoke mmap access to files via "
-    "copy-on-write semantics, or by removing all write access");
-
-#ifdef MAC_DEBUG
-SYSCTL_NODE(_security_mac, OID_AUTO, debug, CTLFLAG_RW, 0,
-    "TrustedBSD MAC debug info");
-
-static int	mac_debug_label_fallback = 0;
-SYSCTL_INT(_security_mac_debug, OID_AUTO, label_fallback, CTLFLAG_RW,
-    &mac_debug_label_fallback, 0, "Filesystems should fall back to fs label"
-    "when label is corrupted.");
-TUNABLE_INT("security.mac.debug_label_fallback",
-    &mac_debug_label_fallback);
-
-SYSCTL_NODE(_security_mac_debug, OID_AUTO, counters, CTLFLAG_RW, 0,
-    "TrustedBSD MAC object counters");
-
-static unsigned int nmacmbufs, nmaccreds, nmacifnets, nmacbpfdescs,
-    nmacsockets, nmacmounts, nmactemp, nmacvnodes, nmacdevfsdirents,
-    nmacipqs, nmacpipes, nmacprocs;
-
-#define	MAC_DEBUG_COUNTER_INC(x)	atomic_add_int(x, 1);
-#define	MAC_DEBUG_COUNTER_DEC(x)	atomic_subtract_int(x, 1);
-
-SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, mbufs, CTLFLAG_RD,
-    &nmacmbufs, 0, "number of mbufs in use");
-SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, creds, CTLFLAG_RD,
-    &nmaccreds, 0, "number of ucreds in use");
-SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, ifnets, CTLFLAG_RD,
-    &nmacifnets, 0, "number of ifnets in use");
-SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, ipqs, CTLFLAG_RD,
-    &nmacipqs, 0, "number of ipqs in use");
-SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, bpfdescs, CTLFLAG_RD,
-    &nmacbpfdescs, 0, "number of bpfdescs in use");
-SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, sockets, CTLFLAG_RD,
-    &nmacsockets, 0, "number of sockets in use");
-SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, pipes, CTLFLAG_RD,
-    &nmacpipes, 0, "number of pipes in use");
-SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, procs, CTLFLAG_RD,
-    &nmacprocs, 0, "number of procs in use");
-SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, mounts, CTLFLAG_RD,
-    &nmacmounts, 0, "number of mounts in use");
-SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, temp, CTLFLAG_RD,
-    &nmactemp, 0, "number of temporary labels in use");
-SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, vnodes, CTLFLAG_RD,
-    &nmacvnodes, 0, "number of vnodes in use");
-SYSCTL_UINT(_security_mac_debug_counters, OID_AUTO, devfsdirents, CTLFLAG_RD,
-    &nmacdevfsdirents, 0, "number of devfs dirents inuse");
-#else
-#define	MAC_DEBUG_COUNTER_INC(x)
-#define	MAC_DEBUG_COUNTER_DEC(x)
-#endif
-
-static int	error_select(int error1, int error2);
-static int	mac_policy_register(struct mac_policy_conf *mpc);
-static int	mac_policy_unregister(struct mac_policy_conf *mpc);
-
-static void	mac_check_vnode_mmap_downgrade(struct ucred *cred,
-		    struct vnode *vp, int *prot);
-static void	mac_cred_mmapped_drop_perms_recurse(struct thread *td,
-		    struct ucred *cred, struct vm_map *map);
-
-static void	mac_destroy_socket_label(struct label *label);
-
-static int	mac_setlabel_vnode_extattr(struct ucred *cred,
-		    struct vnode *vp, struct label *intlabel);
-
-MALLOC_DEFINE(M_MACPIPELABEL, "macpipelabel", "MAC labels for pipes");
-MALLOC_DEFINE(M_MACTEMP, "mactemp", "MAC temporary label storage");
-
-/*
- * mac_static_policy_list holds a list of policy modules that are not
- * loaded while the system is "live", and cannot be unloaded.  These
- * policies can be invoked without holding the busy count.
- *
- * mac_policy_list stores the list of dynamic policies.  A busy count is
- * maintained for the list, stored in mac_policy_busy.  The busy count
- * is protected by mac_policy_mtx; the list may be modified only
- * while the busy count is 0, requiring that the lock be held to
- * prevent new references to the list from being acquired.  For almost
- * all operations, incrementing the busy count is sufficient to
- * guarantee consistency, as the list cannot be modified while the
- * busy count is elevated.  For a few special operations involving a
- * change to the list of active policies, the mtx itself must be held.
- * A condition variable, mac_policy_cv, is used to signal potential
- * exclusive consumers that they should try to acquire the lock if a
- * first attempt at exclusive access fails.
- */
-static struct mtx mac_policy_mtx;
-static struct cv mac_policy_cv;
-static int mac_policy_count;
-static LIST_HEAD(, mac_policy_conf) mac_policy_list;
-static LIST_HEAD(, mac_policy_conf) mac_static_policy_list;
-
-/*
- * We manually invoke WITNESS_WARN() to allow Witness to generate
- * warnings even if we don't end up ever triggering the wait at
- * run-time.  The consumer of the exclusive interface must not hold
- * any locks (other than potentially Giant) since we may sleep for
- * long (potentially indefinite) periods of time waiting for the
- * framework to become quiescent so that a policy list change may
- * be made.
- */
-static __inline void
-mac_policy_grab_exclusive(void)
-{
-	WITNESS_WARN(WARN_GIANTOK | WARN_SLEEPOK, NULL,
- 	    "mac_policy_grab_exclusive() at %s:%d", __FILE__, __LINE__);
-	mtx_lock(&mac_policy_mtx);
-	while (mac_policy_count != 0)
-		cv_wait(&mac_policy_cv, &mac_policy_mtx);
-}
-
-static __inline void
-mac_policy_assert_exclusive(void)
-{
-	mtx_assert(&mac_policy_mtx, MA_OWNED);
-	KASSERT(mac_policy_count == 0,
-	    ("mac_policy_assert_exclusive(): not exclusive"));
-}
-
-static __inline void
-mac_policy_release_exclusive(void)
-{
-
-	KASSERT(mac_policy_count == 0,
-	    ("mac_policy_release_exclusive(): not exclusive"));
-	mtx_unlock(&mac_policy_mtx);
-	cv_signal(&mac_policy_cv);
-}
-
-static __inline void
-mac_policy_list_busy(void)
-{
-	mtx_lock(&mac_policy_mtx);
-	mac_policy_count++;
-	mtx_unlock(&mac_policy_mtx);
-}
-
-static __inline int
-mac_policy_list_conditional_busy(void)
-{
-	int ret;
-
-	mtx_lock(&mac_policy_mtx);
-	if (!LIST_EMPTY(&mac_policy_list)) {
-		mac_policy_count++;
-		ret = 1;
-	} else
-		ret = 0;
-	mtx_unlock(&mac_policy_mtx);
-	return (ret);
-}
-
-static __inline void
-mac_policy_list_unbusy(void)
-{
-	mtx_lock(&mac_policy_mtx);
-	mac_policy_count--;
-	KASSERT(mac_policy_count >= 0, ("MAC_POLICY_LIST_LOCK"));
-	if (mac_policy_count == 0)
-		cv_signal(&mac_policy_cv);
-	mtx_unlock(&mac_policy_mtx);
-}
-
-/*
- * MAC_CHECK performs the designated check by walking the policy
- * module list and checking with each as to how it feels about the
- * request.  Note that it returns its value via 'error' in the scope
- * of the caller.
- */
-#define	MAC_CHECK(check, args...) do {					\
-	struct mac_policy_conf *mpc;					\
-	int entrycount;							\
-									\
-	error = 0;							\
-	LIST_FOREACH(mpc, &mac_static_policy_list, mpc_list) {		\
-		if (mpc->mpc_ops->mpo_ ## check != NULL)		\
-			error = error_select(				\
-			    mpc->mpc_ops->mpo_ ## check (args),		\
-			    error);					\
-	}								\
-	if ((entrycount = mac_policy_list_conditional_busy()) != 0) {	\
-		LIST_FOREACH(mpc, &mac_policy_list, mpc_list) {		\
-			if (mpc->mpc_ops->mpo_ ## check != NULL)	\
-				error = error_select(			\
-				    mpc->mpc_ops->mpo_ ## check (args),	\
-				    error);				\
-		}							\
-		mac_policy_list_unbusy();				\
-	}								\
-} while (0)
-
-/*
- * MAC_BOOLEAN performs the designated boolean composition by walking
- * the module list, invoking each instance of the operation, and
- * combining the results using the passed C operator.  Note that it
- * returns its value via 'result' in the scope of the caller, which
- * should be initialized by the caller in a meaningful way to get
- * a meaningful result.
- */
-#define	MAC_BOOLEAN(operation, composition, args...) do {		\
-	struct mac_policy_conf *mpc;					\
-	int entrycount;							\
-									\
-	LIST_FOREACH(mpc, &mac_static_policy_list, mpc_list) {		\
-		if (mpc->mpc_ops->mpo_ ## operation != NULL)		\
-			result = result composition			\
-			    mpc->mpc_ops->mpo_ ## operation (args);	\
-	}								\
-	if ((entrycount = mac_policy_list_conditional_busy()) != 0) {	\
-		LIST_FOREACH(mpc, &mac_policy_list, mpc_list) {		\
-			if (mpc->mpc_ops->mpo_ ## operation != NULL)	\
-				result = result composition		\
-				    mpc->mpc_ops->mpo_ ## operation	\
-				    (args);				\
-		}							\
-		mac_policy_list_unbusy();				\
-	}								\
-} while (0)
-
-#define	MAC_EXTERNALIZE(type, label, elementlist, outbuf, 		\
-    outbuflen) do {							\
-	int claimed, first, ignorenotfound, savedlen;			\
-	char *element_name, *element_temp;				\
-	struct sbuf sb;							\
-									\
-	error = 0;							\
-	first = 1;							\
-	sbuf_new(&sb, outbuf, outbuflen, SBUF_FIXEDLEN);		\
-	element_temp = elementlist;					\
-	while ((element_name = strsep(&element_temp, ",")) != NULL) {	\
-		if (element_name[0] == '?') {				\
-			element_name++;					\
-			ignorenotfound = 1;				\
-		 } else							\
-			ignorenotfound = 0;				\
-		savedlen = sbuf_len(&sb);				\
-		if (first) {						\
-			error = sbuf_printf(&sb, "%s/", element_name);	\
-			first = 0;					\
-		} else							\
-			error = sbuf_printf(&sb, ",%s/", element_name);	\
-		if (error == -1) {					\
-			error = EINVAL;	/* XXX: E2BIG? */		\
-			break;						\
-		}							\
-		claimed = 0;						\
-		MAC_CHECK(externalize_ ## type, label, element_name,	\
-		    &sb, &claimed);					\
-		if (error)						\
-			break;						\
-		if (claimed == 0 && ignorenotfound) {			\
-			/* Revert last label name. */			\
-			sbuf_setpos(&sb, savedlen);			\
-		} else if (claimed != 1) {				\
-			error = EINVAL;	/* XXX: ENOLABEL? */		\
-			break;						\
-		}							\
-	}								\
-	sbuf_finish(&sb);						\
-} while (0)
-
-#define	MAC_INTERNALIZE(type, label, instring) do {			\
-	char *element, *element_name, *element_data;			\
-	int claimed;							\
-									\
-	error = 0;							\
-	element = instring;						\
-	while ((element_name = strsep(&element, ",")) != NULL) {	\
-		element_data = element_name;				\
-		element_name = strsep(&element_data, "/");		\
-		if (element_data == NULL) {				\
-			error = EINVAL;					\
-			break;						\
-		}							\
-		claimed = 0;						\
-		MAC_CHECK(internalize_ ## type, label, element_name,	\
-		    element_data, &claimed);				\
-		if (error)						\
-			break;						\
-		if (claimed != 1) {					\
-			/* XXXMAC: Another error here? */		\
-			error = EINVAL;					\
-			break;						\
-		}							\
-	}								\
-} while (0)
-
-/*
- * MAC_PERFORM performs the designated operation by walking the policy
- * module list and invoking that operation for each policy.
- */
-#define	MAC_PERFORM(operation, args...) do {				\
-	struct mac_policy_conf *mpc;					\
-	int entrycount;							\
-									\
-	LIST_FOREACH(mpc, &mac_static_policy_list, mpc_list) {		\
-		if (mpc->mpc_ops->mpo_ ## operation != NULL)		\
-			mpc->mpc_ops->mpo_ ## operation (args);		\
-	}								\
-	if ((entrycount = mac_policy_list_conditional_busy()) != 0) {	\
-		LIST_FOREACH(mpc, &mac_policy_list, mpc_list) {		\
-			if (mpc->mpc_ops->mpo_ ## operation != NULL)	\
-				mpc->mpc_ops->mpo_ ## operation (args);	\
-		}							\
-		mac_policy_list_unbusy();				\
-	}								\
-} while (0)
-
-/*
- * Initialize the MAC subsystem, including appropriate SMP locks.
- */
-static void
-mac_init(void)
-{
-
-	LIST_INIT(&mac_static_policy_list);
-	LIST_INIT(&mac_policy_list);
-
-	mtx_init(&mac_policy_mtx, "mac_policy_mtx", NULL, MTX_DEF);
-	cv_init(&mac_policy_cv, "mac_policy_cv");
-}
-
-/*
- * For the purposes of modules that want to know if they were loaded
- * "early", set the mac_late flag once we've processed modules either
- * linked into the kernel, or loaded before the kernel startup.
- */
-static void
-mac_late_init(void)
-{
-
-	mac_late = 1;
-}
-
-/*
- * After the policy list has changed, walk the list to update any global
- * flags.  Currently, we support only one flag, and it's conditionally
- * defined; as a result, the entire function is conditional.  Eventually,
- * the #else case might also iterate across the policies.
- */
-static void
-mac_policy_updateflags(void)
-{
-#ifndef MAC_ALWAYS_LABEL_MBUF
-	struct mac_policy_conf *tmpc;
-	int labelmbufs;
-
-	mac_policy_assert_exclusive();
-
-	labelmbufs = 0;
-	LIST_FOREACH(tmpc, &mac_static_policy_list, mpc_list) {
-		if (tmpc->mpc_loadtime_flags & MPC_LOADTIME_FLAG_LABELMBUFS)
-			labelmbufs++;
-	}
-	LIST_FOREACH(tmpc, &mac_policy_list, mpc_list) {
-		if (tmpc->mpc_loadtime_flags & MPC_LOADTIME_FLAG_LABELMBUFS)
-			labelmbufs++;
-	}
-	mac_labelmbufs = (labelmbufs != 0);
-#endif
-}
-
-/*
- * Allow MAC policy modules to register during boot, etc.
- */
-int
-mac_policy_modevent(module_t mod, int type, void *data)
-{
-	struct mac_policy_conf *mpc;
-	int error;
-
-	error = 0;
-	mpc = (struct mac_policy_conf *) data;
-
-	switch (type) {
-	case MOD_LOAD:
-		if (mpc->mpc_loadtime_flags & MPC_LOADTIME_FLAG_NOTLATE &&
-		    mac_late) {
-			printf("mac_policy_modevent: can't load %s policy "
-			    "after booting\n", mpc->mpc_name);
-			error = EBUSY;
-			break;
-		}
-		error = mac_policy_register(mpc);
-		break;
-	case MOD_UNLOAD:
-		/* Don't unregister the module if it was never registered. */
-		if ((mpc->mpc_runtime_flags & MPC_RUNTIME_FLAG_REGISTERED)
-		    != 0)
-			error = mac_policy_unregister(mpc);
-		else
-			error = 0;
-		break;
-	default:
-		break;
-	}
-
-	return (error);
-}
-
-static int
-mac_policy_register(struct mac_policy_conf *mpc)
-{
-	struct mac_policy_conf *tmpc;
-	int error, slot, static_entry;
-
-	error = 0;
-
-	/*
-	 * We don't technically need exclusive access while !mac_late,
-	 * but hold it for assertion consistency.
-	 */
-	mac_policy_grab_exclusive();
-
-	/*
-	 * If the module can potentially be unloaded, or we're loading
-	 * late, we have to stick it in the non-static list and pay
-	 * an extra performance overhead.  Otherwise, we can pay a
-	 * light locking cost and stick it in the static list.
-	 */
-	static_entry = (!mac_late &&
-	    !(mpc->mpc_loadtime_flags & MPC_LOADTIME_FLAG_UNLOADOK));
-
-	if (static_entry) {
-		LIST_FOREACH(tmpc, &mac_static_policy_list, mpc_list) {
-			if (strcmp(tmpc->mpc_name, mpc->mpc_name) == 0) {
-				error = EEXIST;
-				goto out;
-			}
-		}
-	} else {
-		LIST_FOREACH(tmpc, &mac_policy_list, mpc_list) {
-			if (strcmp(tmpc->mpc_name, mpc->mpc_name) == 0) {
-				error = EEXIST;
-				goto out;
-			}
-		}
-	}
-	if (mpc->mpc_field_off != NULL) {
-		slot = ffs(mac_slot_offsets_free);
-		if (slot == 0) {
-			error = ENOMEM;
-			goto out;
-		}
-		slot--;
-		mac_slot_offsets_free &= ~(1 << slot);
-		*mpc->mpc_field_off = slot;
-	}
-	mpc->mpc_runtime_flags |= MPC_RUNTIME_FLAG_REGISTERED;
-
-	/*
-	 * If we're loading a MAC module after the framework has
-	 * initialized, it has to go into the dynamic list.  If
-	 * we're loading it before we've finished initializing,
-	 * it can go into the static list with weaker locker
-	 * requirements.
-	 */
-	if (static_entry)
-		LIST_INSERT_HEAD(&mac_static_policy_list, mpc, mpc_list);
-	else
-		LIST_INSERT_HEAD(&mac_policy_list, mpc, mpc_list);
-
-	/* Per-policy initialization. */
-	if (mpc->mpc_ops->mpo_init != NULL)
-		(*(mpc->mpc_ops->mpo_init))(mpc);
-	mac_policy_updateflags();
-
-	printf("Security policy loaded: %s (%s)\n", mpc->mpc_fullname,
-	    mpc->mpc_name);
-
-out:
-	mac_policy_release_exclusive();
-	return (error);
-}
-
-static int
-mac_policy_unregister(struct mac_policy_conf *mpc)
-{
-
-	/*
-	 * If we fail the load, we may get a request to unload.  Check
-	 * to see if we did the run-time registration, and if not,
-	 * silently succeed.
-	 */
-	mac_policy_grab_exclusive();
-	if ((mpc->mpc_runtime_flags & MPC_RUNTIME_FLAG_REGISTERED) == 0) {
-		mac_policy_release_exclusive();
-		return (0);
-	}
-#if 0
-	/*
-	 * Don't allow unloading modules with private data.
-	 */
-	if (mpc->mpc_field_off != NULL) {
-		MAC_POLICY_LIST_UNLOCK();
-		return (EBUSY);
-	}
-#endif
-	/*
-	 * Only allow the unload to proceed if the module is unloadable
-	 * by its own definition.
-	 */
-	if ((mpc->mpc_loadtime_flags & MPC_LOADTIME_FLAG_UNLOADOK) == 0) {
-		mac_policy_release_exclusive();
-		return (EBUSY);
-	}
-	if (mpc->mpc_ops->mpo_destroy != NULL)
-		(*(mpc->mpc_ops->mpo_destroy))(mpc);
-
-	LIST_REMOVE(mpc, mpc_list);
-	mpc->mpc_runtime_flags &= ~MPC_RUNTIME_FLAG_REGISTERED;
-	mac_policy_updateflags();
-
-	mac_policy_release_exclusive();
-
-	printf("Security policy unload: %s (%s)\n", mpc->mpc_fullname,
-	    mpc->mpc_name);
-
-	return (0);
-}
-
-/*
- * Define an error value precedence, and given two arguments, selects the
- * value with the higher precedence.
- */
-static int
-error_select(int error1, int error2)
-{
-
-	/* Certain decision-making errors take top priority. */
-	if (error1 == EDEADLK || error2 == EDEADLK)
-		return (EDEADLK);
-
-	/* Invalid arguments should be reported where possible. */
-	if (error1 == EINVAL || error2 == EINVAL)
-		return (EINVAL);
-
-	/* Precedence goes to "visibility", with both process and file. */
-	if (error1 == ESRCH || error2 == ESRCH)
-		return (ESRCH);
-
-	if (error1 == ENOENT || error2 == ENOENT)
-		return (ENOENT);
-
-	/* Precedence goes to DAC/MAC protections. */
-	if (error1 == EACCES || error2 == EACCES)
-		return (EACCES);
-
-	/* Precedence goes to privilege. */
-	if (error1 == EPERM || error2 == EPERM)
-		return (EPERM);
-
-	/* Precedence goes to error over success; otherwise, arbitrary. */
-	if (error1 != 0)
-		return (error1);
-	return (error2);
-}
-
-static struct label *
-mbuf_to_label(struct mbuf *mbuf)
-{
-	struct m_tag *tag;
-	struct label *label;
-
-	tag = m_tag_find(mbuf, PACKET_TAG_MACLABEL, NULL);
-	label = (struct label *)(tag+1);
-
-	return (label);
-}
-
-static void
-mac_init_label(struct label *label)
-{
-
-	bzero(label, sizeof(*label));
-	label->l_flags = MAC_FLAG_INITIALIZED;
-}
-
-static void
-mac_destroy_label(struct label *label)
-{
-
-	KASSERT(label->l_flags & MAC_FLAG_INITIALIZED,
-	    ("destroying uninitialized label"));
-
-	bzero(label, sizeof(*label));
-	/* implicit: label->l_flags &= ~MAC_FLAG_INITIALIZED; */
-}
-
-void
-mac_init_bpfdesc(struct bpf_d *bpf_d)
-{
-
-	mac_init_label(&bpf_d->bd_label);
-	MAC_PERFORM(init_bpfdesc_label, &bpf_d->bd_label);
-	MAC_DEBUG_COUNTER_INC(&nmacbpfdescs);
-}
-
-static void
-mac_init_cred_label(struct label *label)
-{
-
-	mac_init_label(label);
-	MAC_PERFORM(init_cred_label, label);
-	MAC_DEBUG_COUNTER_INC(&nmaccreds);
-}
-
-void
-mac_init_cred(struct ucred *cred)
-{
-
-	mac_init_cred_label(&cred->cr_label);
-}
-
-void
-mac_init_devfsdirent(struct devfs_dirent *de)
-{
-
-	mac_init_label(&de->de_label);
-	MAC_PERFORM(init_devfsdirent_label, &de->de_label);
-	MAC_DEBUG_COUNTER_INC(&nmacdevfsdirents);
-}
-
-static void
-mac_init_ifnet_label(struct label *label)
-{
-
-	mac_init_label(label);
-	MAC_PERFORM(init_ifnet_label, label);
-	MAC_DEBUG_COUNTER_INC(&nmacifnets);
-}
-
-void
-mac_init_ifnet(struct ifnet *ifp)
-{
-
-	mac_init_ifnet_label(&ifp->if_label);
-}
-
-int
-mac_init_ipq(struct ipq *ipq, int flag)
-{
-	int error;
-
-	mac_init_label(&ipq->ipq_label);
-
-	MAC_CHECK(init_ipq_label, &ipq->ipq_label, flag);
-	if (error) {
-		MAC_PERFORM(destroy_ipq_label, &ipq->ipq_label);
-		mac_destroy_label(&ipq->ipq_label);
-	} else {
-		MAC_DEBUG_COUNTER_INC(&nmacipqs);
-	}
-	return (error);
-}
-
-int
-mac_init_mbuf_tag(struct m_tag *tag, int flag)
-{
-	struct label *label;
-	int error;
-
-	label = (struct label *) (tag + 1);
-	mac_init_label(label);
-
-	MAC_CHECK(init_mbuf_label, label, flag);
-	if (error) {
-		MAC_PERFORM(destroy_mbuf_label, label);
-		mac_destroy_label(label);
-	} else {
-		MAC_DEBUG_COUNTER_INC(&nmacmbufs);
-	}
-	return (error);
-}
-
-int
-mac_init_mbuf(struct mbuf *m, int flag)
-{
-	struct m_tag *tag;
-	int error;
-
-	M_ASSERTPKTHDR(m);
-
-#ifndef MAC_ALWAYS_LABEL_MBUF
-	/*
-	 * If conditionally allocating mbuf labels, don't allocate unless
-	 * they are required.
-	 */
-	if (!mac_labelmbufs)
-		return (0);
-#endif
-	tag = m_tag_get(PACKET_TAG_MACLABEL, sizeof(struct label),
-	    flag);
-	if (tag == NULL)
-		return (ENOMEM);
-	error = mac_init_mbuf_tag(tag, flag);
-	if (error) {
-		m_tag_free(tag);
-		return (error);
-	}
-	m_tag_prepend(m, tag);
-	return (0);
-}
-
-void
-mac_init_mount(struct mount *mp)
-{
-
-	mac_init_label(&mp->mnt_mntlabel);
-	mac_init_label(&mp->mnt_fslabel);
-	MAC_PERFORM(init_mount_label, &mp->mnt_mntlabel);
-	MAC_PERFORM(init_mount_fs_label, &mp->mnt_fslabel);
-	MAC_DEBUG_COUNTER_INC(&nmacmounts);
-}
-
-static void
-mac_init_pipe_label(struct label *label)
-{
-
-	mac_init_label(label);
-	MAC_PERFORM(init_pipe_label, label);
-	MAC_DEBUG_COUNTER_INC(&nmacpipes);
-}
-
-void
-mac_init_pipe(struct pipe *pipe)
-{
-	struct label *label;
-
-	label = malloc(sizeof(struct label), M_MACPIPELABEL, M_ZERO|M_WAITOK);
-	pipe->pipe_label = label;
-	pipe->pipe_peer->pipe_label = label;
-	mac_init_pipe_label(label);
-}
-
-void
-mac_init_proc(struct proc *p)
-{
-
-	mac_init_label(&p->p_label);
-	MAC_PERFORM(init_proc_label, &p->p_label);
-	MAC_DEBUG_COUNTER_INC(&nmacprocs);
-}
-
-static int
-mac_init_socket_label(struct label *label, int flag)
-{
-	int error;
-
-	mac_init_label(label);
-
-	MAC_CHECK(init_socket_label, label, flag);
-	if (error) {
-		MAC_PERFORM(destroy_socket_label, label);
-		mac_destroy_label(label);
-	} else {
-		MAC_DEBUG_COUNTER_INC(&nmacsockets);
-	}
-
-	return (error);
-}
-
-static int
-mac_init_socket_peer_label(struct label *label, int flag)
-{
-	int error;
-
-	mac_init_label(label);
-
-	MAC_CHECK(init_socket_peer_label, label, flag);
-	if (error) {
-		MAC_PERFORM(destroy_socket_label, label);
-		mac_destroy_label(label);
-	}
-
-	return (error);
-}
-
-int
-mac_init_socket(struct socket *socket, int flag)
-{
-	int error;
-
-	error = mac_init_socket_label(&socket->so_label, flag);
-	if (error)
-		return (error);
-
-	error = mac_init_socket_peer_label(&socket->so_peerlabel, flag);
-	if (error)
-		mac_destroy_socket_label(&socket->so_label);
-
-	return (error);
-}
-
-void
-mac_init_vnode_label(struct label *label)
-{
-
-	mac_init_label(label);
-	MAC_PERFORM(init_vnode_label, label);
-	MAC_DEBUG_COUNTER_INC(&nmacvnodes);
-}
-
-void
-mac_init_vnode(struct vnode *vp)
-{
-
-	mac_init_vnode_label(&vp->v_label);
-}
-
-void
-mac_destroy_bpfdesc(struct bpf_d *bpf_d)
-{
-
-	MAC_PERFORM(destroy_bpfdesc_label, &bpf_d->bd_label);
-	mac_destroy_label(&bpf_d->bd_label);
-	MAC_DEBUG_COUNTER_DEC(&nmacbpfdescs);
-}
-
-static void
-mac_destroy_cred_label(struct label *label)
-{
-
-	MAC_PERFORM(destroy_cred_label, label);
-	mac_destroy_label(label);
-	MAC_DEBUG_COUNTER_DEC(&nmaccreds);
-}
-
-void
-mac_destroy_cred(struct ucred *cred)
-{
-
-	mac_destroy_cred_label(&cred->cr_label);
-}
-
-void
-mac_destroy_devfsdirent(struct devfs_dirent *de)
-{
-
-	MAC_PERFORM(destroy_devfsdirent_label, &de->de_label);
-	mac_destroy_label(&de->de_label);
-	MAC_DEBUG_COUNTER_DEC(&nmacdevfsdirents);
-}
-
-static void
-mac_destroy_ifnet_label(struct label *label)
-{
-
-	MAC_PERFORM(destroy_ifnet_label, label);
-	mac_destroy_label(label);
-	MAC_DEBUG_COUNTER_DEC(&nmacifnets);
-}
-
-void
-mac_destroy_ifnet(struct ifnet *ifp)
-{
-
-	mac_destroy_ifnet_label(&ifp->if_label);
-}
-
-void
-mac_destroy_ipq(struct ipq *ipq)
-{
-
-	MAC_PERFORM(destroy_ipq_label, &ipq->ipq_label);
-	mac_destroy_label(&ipq->ipq_label);
-	MAC_DEBUG_COUNTER_DEC(&nmacipqs);
-}
-
-void
-mac_destroy_mbuf_tag(struct m_tag *tag)
-{
-	struct label *label;
-
-	label = (struct label *)(tag+1);
-
-	MAC_PERFORM(destroy_mbuf_label, label);
-	mac_destroy_label(label);
-	MAC_DEBUG_COUNTER_DEC(&nmacmbufs);
-}
-
-void
-mac_destroy_mount(struct mount *mp)
-{
-
-	MAC_PERFORM(destroy_mount_label, &mp->mnt_mntlabel);
-	MAC_PERFORM(destroy_mount_fs_label, &mp->mnt_fslabel);
-	mac_destroy_label(&mp->mnt_fslabel);
-	mac_destroy_label(&mp->mnt_mntlabel);
-	MAC_DEBUG_COUNTER_DEC(&nmacmounts);
-}
-
-static void
-mac_destroy_pipe_label(struct label *label)
-{
-
-	MAC_PERFORM(destroy_pipe_label, label);
-	mac_destroy_label(label);
-	MAC_DEBUG_COUNTER_DEC(&nmacpipes);
-}
-
-void
-mac_destroy_pipe(struct pipe *pipe)
-{
-
-	mac_destroy_pipe_label(pipe->pipe_label);
-	free(pipe->pipe_label, M_MACPIPELABEL);
-}
-
-void
-mac_destroy_proc(struct proc *p)
-{
-
-	MAC_PERFORM(destroy_proc_label, &p->p_label);
-	mac_destroy_label(&p->p_label);
-	MAC_DEBUG_COUNTER_DEC(&nmacprocs);
-}
-
-static void
-mac_destroy_socket_label(struct label *label)
-{
-
-	MAC_PERFORM(destroy_socket_label, label);
-	mac_destroy_label(label);
-	MAC_DEBUG_COUNTER_DEC(&nmacsockets);
-}
-
-static void
-mac_destroy_socket_peer_label(struct label *label)
-{
-
-	MAC_PERFORM(destroy_socket_peer_label, label);
-	mac_destroy_label(label);
-}
-
-void
-mac_destroy_socket(struct socket *socket)
-{
-
-	mac_destroy_socket_label(&socket->so_label);
-	mac_destroy_socket_peer_label(&socket->so_peerlabel);
-}
-
-void
-mac_destroy_vnode_label(struct label *label)
-{
-
-	MAC_PERFORM(destroy_vnode_label, label);
-	mac_destroy_label(label);
-	MAC_DEBUG_COUNTER_DEC(&nmacvnodes);
-}
-
-void
-mac_destroy_vnode(struct vnode *vp)
-{
-
-	mac_destroy_vnode_label(&vp->v_label);
-}
-
-void
-mac_copy_mbuf_tag(struct m_tag *src, struct m_tag *dest)
-{
-	struct label *src_label, *dest_label;
-
-	src_label = (struct label *)(src+1);
-	dest_label = (struct label *)(dest+1);
-
-	/*
-	 * mac_init_mbuf_tag() is called on the target tag in
-	 * m_tag_copy(), so we don't need to call it here.
-	 */
-	MAC_PERFORM(copy_mbuf_label, src_label, dest_label);
-}
-
-static void
-mac_copy_pipe_label(struct label *src, struct label *dest)
-{
-
-	MAC_PERFORM(copy_pipe_label, src, dest);
-}
-
-void
-mac_copy_vnode_label(struct label *src, struct label *dest)
-{
-
-	MAC_PERFORM(copy_vnode_label, src, dest);
-}
-
-static int
-mac_check_structmac_consistent(struct mac *mac)
-{
-
-	if (mac->m_buflen < 0 ||
-	    mac->m_buflen > MAC_MAX_LABEL_BUF_LEN)
-		return (EINVAL);
-
-	return (0);
-}
-
-static int
-mac_externalize_cred_label(struct label *label, char *elements,
-    char *outbuf, size_t outbuflen, int flags)
-{
-	int error;
-
-	MAC_EXTERNALIZE(cred_label, label, elements, outbuf, outbuflen);
-
-	return (error);
-}
-
-static int
-mac_externalize_ifnet_label(struct label *label, char *elements,
-    char *outbuf, size_t outbuflen, int flags)
-{
-	int error;
-
-	MAC_EXTERNALIZE(ifnet_label, label, elements, outbuf, outbuflen);
-
-	return (error);
-}
-
-static int
-mac_externalize_pipe_label(struct label *label, char *elements,
-    char *outbuf, size_t outbuflen, int flags)
-{
-	int error;
-
-	MAC_EXTERNALIZE(pipe_label, label, elements, outbuf, outbuflen);
-
-	return (error);
-}
-
-static int
-mac_externalize_socket_label(struct label *label, char *elements,
-    char *outbuf, size_t outbuflen, int flags)
-{
-	int error;
-
-	MAC_EXTERNALIZE(socket_label, label, elements, outbuf, outbuflen);
-
-	return (error);
-}
-
-static int
-mac_externalize_socket_peer_label(struct label *label, char *elements,
-    char *outbuf, size_t outbuflen, int flags)
-{
-	int error;
-
-	MAC_EXTERNALIZE(socket_peer_label, label, elements, outbuf, outbuflen);
-
-	return (error);
-}
-
-static int
-mac_externalize_vnode_label(struct label *label, char *elements,
-    char *outbuf, size_t outbuflen, int flags)
-{
-	int error;
-
-	MAC_EXTERNALIZE(vnode_label, label, elements, outbuf, outbuflen);
-
-	return (error);
-}
-
-static int
-mac_internalize_cred_label(struct label *label, char *string)
-{
-	int error;
-
-	MAC_INTERNALIZE(cred_label, label, string);
-
-	return (error);
-}
-
-static int
-mac_internalize_ifnet_label(struct label *label, char *string)
-{
-	int error;
-
-	MAC_INTERNALIZE(ifnet_label, label, string);
-
-	return (error);
-}
-
-static int
-mac_internalize_pipe_label(struct label *label, char *string)
-{
-	int error;
-
-	MAC_INTERNALIZE(pipe_label, label, string);
-
-	return (error);
-}
-
-static int
-mac_internalize_socket_label(struct label *label, char *string)
-{
-	int error;
-
-	MAC_INTERNALIZE(socket_label, label, string);
-
-	return (error);
-}
-
-static int
-mac_internalize_vnode_label(struct label *label, char *string)
-{
-	int error;
-
-	MAC_INTERNALIZE(vnode_label, label, string);
-
-	return (error);
-}
-
-/*
- * Initialize MAC label for the first kernel process, from which other
- * kernel processes and threads are spawned.
- */
-void
-mac_create_proc0(struct ucred *cred)
-{
-
-	MAC_PERFORM(create_proc0, cred);
-}
-
-/*
- * Initialize MAC label for the first userland process, from which other
- * userland processes and threads are spawned.
- */
-void
-mac_create_proc1(struct ucred *cred)
-{
-
-	MAC_PERFORM(create_proc1, cred);
-}
-
-void
-mac_thread_userret(struct thread *td)
-{
-
-	MAC_PERFORM(thread_userret, td);
-}
-
-/*
- * When a new process is created, its label must be initialized.  Generally,
- * this involves inheritence from the parent process, modulo possible
- * deltas.  This function allows that processing to take place.
- */
-void
-mac_create_cred(struct ucred *parent_cred, struct ucred *child_cred)
-{
-
-	MAC_PERFORM(create_cred, parent_cred, child_cred);
-}
-
-void
-mac_update_devfsdirent(struct mount *mp, struct devfs_dirent *de,
-    struct vnode *vp)
-{
-
-	MAC_PERFORM(update_devfsdirent, mp, de, &de->de_label, vp,
-	    &vp->v_label);
-}
-
-void
-mac_associate_vnode_devfs(struct mount *mp, struct devfs_dirent *de,
-    struct vnode *vp)
-{
-
-	MAC_PERFORM(associate_vnode_devfs, mp, &mp->mnt_fslabel, de,
-	    &de->de_label, vp, &vp->v_label);
-}
-
-int
-mac_associate_vnode_extattr(struct mount *mp, struct vnode *vp)
-{
-	int error;
-
-	ASSERT_VOP_LOCKED(vp, "mac_associate_vnode_extattr");
-
-	MAC_CHECK(associate_vnode_extattr, mp, &mp->mnt_fslabel, vp,
-	    &vp->v_label);
-
-	return (error);
-}
-
-void
-mac_associate_vnode_singlelabel(struct mount *mp, struct vnode *vp)
-{
-
-	MAC_PERFORM(associate_vnode_singlelabel, mp, &mp->mnt_fslabel, vp,
-	    &vp->v_label);
-}
-
-int
-mac_create_vnode_extattr(struct ucred *cred, struct mount *mp,
-    struct vnode *dvp, struct vnode *vp, struct componentname *cnp)
-{
-	int error;
-
-	ASSERT_VOP_LOCKED(dvp, "mac_create_vnode_extattr");
-	ASSERT_VOP_LOCKED(vp, "mac_create_vnode_extattr");
-
-	error = VOP_OPENEXTATTR(vp, cred, curthread);
-	if (error == EOPNOTSUPP) {
-		/* XXX: Optionally abort if transactions not supported. */
-		if (ea_warn_once == 0) {
-			printf("Warning: transactions not supported "
-			    "in EA write.\n");
-			ea_warn_once = 1;
-		}
-	} else if (error)
-		return (error);
-
-	MAC_CHECK(create_vnode_extattr, cred, mp, &mp->mnt_fslabel,
-	    dvp, &dvp->v_label, vp, &vp->v_label, cnp);
-
-	if (error) {
-		VOP_CLOSEEXTATTR(vp, 0, NOCRED, curthread);
-		return (error);
-	}
-
-	error = VOP_CLOSEEXTATTR(vp, 1, NOCRED, curthread);
-
-	if (error == EOPNOTSUPP)
-		error = 0;				/* XXX */
-
-	return (error);
-}
-
-static int
-mac_setlabel_vnode_extattr(struct ucred *cred, struct vnode *vp,
-    struct label *intlabel)
-{
-	int error;
-
-	ASSERT_VOP_LOCKED(vp, "mac_setlabel_vnode_extattr");
-
-	error = VOP_OPENEXTATTR(vp, cred, curthread);
-	if (error == EOPNOTSUPP) {
-		/* XXX: Optionally abort if transactions not supported. */
-		if (ea_warn_once == 0) {
-			printf("Warning: transactions not supported "
-			    "in EA write.\n");
-			ea_warn_once = 1;
-		}
-	} else if (error)
-		return (error);
-
-	MAC_CHECK(setlabel_vnode_extattr, cred, vp, &vp->v_label, intlabel);
-
-	if (error) {
-		VOP_CLOSEEXTATTR(vp, 0, NOCRED, curthread);
-		return (error);
-	}
-
-	error = VOP_CLOSEEXTATTR(vp, 1, NOCRED, curthread);
-
-	if (error == EOPNOTSUPP)
-		error = 0;				/* XXX */
-
-	return (error);
-}
-
-int
-mac_execve_enter(struct image_params *imgp, struct mac *mac_p,
-    struct label *execlabelstorage)
-{
-	struct mac mac;
-	char *buffer;
-	int error;
-
-	if (mac_p == NULL)
-		return (0);
-
-	error = copyin(mac_p, &mac, sizeof(mac));
-	if (error)
-		return (error);
-
-	error = mac_check_structmac_consistent(&mac);
-	if (error)
-		return (error);
-
-	buffer = malloc(mac.m_buflen, M_MACTEMP, M_WAITOK);
-	error = copyinstr(mac.m_string, buffer, mac.m_buflen, NULL);
-	if (error) {
-		free(buffer, M_MACTEMP);
-		return (error);
-	}
-
-	mac_init_cred_label(execlabelstorage);
-	error = mac_internalize_cred_label(execlabelstorage, buffer);
-	free(buffer, M_MACTEMP);
-	if (error) {
-		mac_destroy_cred_label(execlabelstorage);
-		return (error);
-	}
-	imgp->execlabel = execlabelstorage;
-	return (0);
-}
-
-void
-mac_execve_exit(struct image_params *imgp)
-{
-	if (imgp->execlabel != NULL)
-		mac_destroy_cred_label(imgp->execlabel);
-}
-
-void
-mac_execve_transition(struct ucred *old, struct ucred *new, struct vnode *vp,
-    struct label *interpvnodelabel, struct image_params *imgp)
-{
-
-	ASSERT_VOP_LOCKED(vp, "mac_execve_transition");
-
-	if (!mac_enforce_process && !mac_enforce_fs)
-		return;
-
-	MAC_PERFORM(execve_transition, old, new, vp, &vp->v_label,
-	    interpvnodelabel, imgp, imgp->execlabel);
-}
-
-int
-mac_execve_will_transition(struct ucred *old, struct vnode *vp,
-    struct label *interpvnodelabel, struct image_params *imgp)
-{
-	int result;
-
-	ASSERT_VOP_LOCKED(vp, "mac_execve_will_transition");
-
-	if (!mac_enforce_process && !mac_enforce_fs)
-		return (0);
-
-	result = 0;
-	MAC_BOOLEAN(execve_will_transition, ||, old, vp, &vp->v_label,
-	    interpvnodelabel, imgp, imgp->execlabel);
-
-	return (result);
-}
-
-int
-mac_check_vnode_access(struct ucred *cred, struct vnode *vp, int acc_mode)
-{
-	int error;
-
-	ASSERT_VOP_LOCKED(vp, "mac_check_vnode_access");
-
-	if (!mac_enforce_fs)
-		return (0);
-
-	MAC_CHECK(check_vnode_access, cred, vp, &vp->v_label, acc_mode);
-	return (error);
-}
-
-int
-mac_check_vnode_chdir(struct ucred *cred, struct vnode *dvp)
-{
-	int error;
-
-	ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_chdir");
-
-	if (!mac_enforce_fs)
-		return (0);
-
-	MAC_CHECK(check_vnode_chdir, cred, dvp, &dvp->v_label);
-	return (error);
-}
-
-int
-mac_check_vnode_chroot(struct ucred *cred, struct vnode *dvp)
-{
-	int error;
-
-	ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_chroot");
-
-	if (!mac_enforce_fs)
-		return (0);
-
-	MAC_CHECK(check_vnode_chroot, cred, dvp, &dvp->v_label);
-	return (error);
-}
-
-int
-mac_check_vnode_create(struct ucred *cred, struct vnode *dvp,
-    struct componentname *cnp, struct vattr *vap)
-{
-	int error;
-
-	ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_create");
-
-	if (!mac_enforce_fs)
-		return (0);
-
-	MAC_CHECK(check_vnode_create, cred, dvp, &dvp->v_label, cnp, vap);
-	return (error);
-}
-
-int
-mac_check_vnode_delete(struct ucred *cred, struct vnode *dvp, struct vnode *vp,
-    struct componentname *cnp)
-{
-	int error;
-
-	ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_delete");
-	ASSERT_VOP_LOCKED(vp, "mac_check_vnode_delete");
-
-	if (!mac_enforce_fs)
-		return (0);
-
-	MAC_CHECK(check_vnode_delete, cred, dvp, &dvp->v_label, vp,
-	    &vp->v_label, cnp);
-	return (error);
-}
-
-int
-mac_check_vnode_deleteacl(struct ucred *cred, struct vnode *vp,
-    acl_type_t type)
-{
-	int error;
-
-	ASSERT_VOP_LOCKED(vp, "mac_check_vnode_deleteacl");
-
-	if (!mac_enforce_fs)
-		return (0);
-
-	MAC_CHECK(check_vnode_deleteacl, cred, vp, &vp->v_label, type);
-	return (error);
-}
-
-int
-mac_check_vnode_deleteextattr(struct ucred *cred, struct vnode *vp,
-    int attrnamespace, const char *name)
-{
-	int error;
-
-	ASSERT_VOP_LOCKED(vp, "mac_check_vnode_deleteextattr");
-
-	if (!mac_enforce_fs)
-		return (0);
-
-	MAC_CHECK(check_vnode_deleteextattr, cred, vp, &vp->v_label,
-	    attrnamespace, name);
-	return (error);
-}
-
-int
-mac_check_vnode_exec(struct ucred *cred, struct vnode *vp,
-    struct image_params *imgp)
-{
-	int error;
-
-	ASSERT_VOP_LOCKED(vp, "mac_check_vnode_exec");
-
-	if (!mac_enforce_process && !mac_enforce_fs)
-		return (0);
-
-	MAC_CHECK(check_vnode_exec, cred, vp, &vp->v_label, imgp,
-	    imgp->execlabel);
-
-	return (error);
-}
-
-int
-mac_check_vnode_getacl(struct ucred *cred, struct vnode *vp, acl_type_t type)
-{
-	int error;
-
-	ASSERT_VOP_LOCKED(vp, "mac_check_vnode_getacl");
-
-	if (!mac_enforce_fs)
-		return (0);
-
-	MAC_CHECK(check_vnode_getacl, cred, vp, &vp->v_label, type);
-	return (error);
-}
-
-int
-mac_check_vnode_getextattr(struct ucred *cred, struct vnode *vp,
-    int attrnamespace, const char *name, struct uio *uio)
-{
-	int error;
-
-	ASSERT_VOP_LOCKED(vp, "mac_check_vnode_getextattr");
-
-	if (!mac_enforce_fs)
-		return (0);
-
-	MAC_CHECK(check_vnode_getextattr, cred, vp, &vp->v_label,
-	    attrnamespace, name, uio);
-	return (error);
-}
-
-int
-mac_check_vnode_link(struct ucred *cred, struct vnode *dvp,
-    struct vnode *vp, struct componentname *cnp)
-{
-	int error;
-
-	ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_link");
-	ASSERT_VOP_LOCKED(vp, "mac_check_vnode_link");
-
-	if (!mac_enforce_fs)
-		return (0);
-
-	MAC_CHECK(check_vnode_link, cred, dvp, &dvp->v_label, vp,
-	    &vp->v_label, cnp);
-	return (error);
-}
-
-int
-mac_check_vnode_listextattr(struct ucred *cred, struct vnode *vp,
-    int attrnamespace)
-{
-	int error;
-
-	ASSERT_VOP_LOCKED(vp, "mac_check_vnode_listextattr");
-
-	if (!mac_enforce_fs)
-		return (0);
-
-	MAC_CHECK(check_vnode_listextattr, cred, vp, &vp->v_label,
-	    attrnamespace);
-	return (error);
-}
-
-int
-mac_check_vnode_lookup(struct ucred *cred, struct vnode *dvp,
-    struct componentname *cnp)
-{
-	int error;
-
-	ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_lookup");
-
-	if (!mac_enforce_fs)
-		return (0);
-
-	MAC_CHECK(check_vnode_lookup, cred, dvp, &dvp->v_label, cnp);
-	return (error);
-}
-
-int
-mac_check_vnode_mmap(struct ucred *cred, struct vnode *vp, int prot)
-{
-	int error;
-
-	ASSERT_VOP_LOCKED(vp, "mac_check_vnode_mmap");
-
-	if (!mac_enforce_fs || !mac_enforce_vm)
-		return (0);
-
-	MAC_CHECK(check_vnode_mmap, cred, vp, &vp->v_label, prot);
-	return (error);
-}
-
-void
-mac_check_vnode_mmap_downgrade(struct ucred *cred, struct vnode *vp, int *prot)
-{
-	int result = *prot;
-
-	ASSERT_VOP_LOCKED(vp, "mac_check_vnode_mmap_downgrade");
-
-	if (!mac_enforce_fs || !mac_enforce_vm)
-		return;
-
-	MAC_PERFORM(check_vnode_mmap_downgrade, cred, vp, &vp->v_label,
-	    &result);
-
-	*prot = result;
-}
-
-int
-mac_check_vnode_mprotect(struct ucred *cred, struct vnode *vp, int prot)
-{
-	int error;
-
-	ASSERT_VOP_LOCKED(vp, "mac_check_vnode_mprotect");
-
-	if (!mac_enforce_fs || !mac_enforce_vm)
-		return (0);
-
-	MAC_CHECK(check_vnode_mprotect, cred, vp, &vp->v_label, prot);
-	return (error);
-}
-
-int
-mac_check_vnode_open(struct ucred *cred, struct vnode *vp, int acc_mode)
-{
-	int error;
-
-	ASSERT_VOP_LOCKED(vp, "mac_check_vnode_open");
-
-	if (!mac_enforce_fs)
-		return (0);
-
-	MAC_CHECK(check_vnode_open, cred, vp, &vp->v_label, acc_mode);
-	return (error);
-}
-
-int
-mac_check_vnode_poll(struct ucred *active_cred, struct ucred *file_cred,
-    struct vnode *vp)
-{
-	int error;
-
-	ASSERT_VOP_LOCKED(vp, "mac_check_vnode_poll");
-
-	if (!mac_enforce_fs)
-		return (0);
-
-	MAC_CHECK(check_vnode_poll, active_cred, file_cred, vp,
-	    &vp->v_label);
-
-	return (error);
-}
-
-int
-mac_check_vnode_read(struct ucred *active_cred, struct ucred *file_cred,
-    struct vnode *vp)
-{
-	int error;
-
-	ASSERT_VOP_LOCKED(vp, "mac_check_vnode_read");
-
-	if (!mac_enforce_fs)
-		return (0);
-
-	MAC_CHECK(check_vnode_read, active_cred, file_cred, vp,
-	    &vp->v_label);
-
-	return (error);
-}
-
-int
-mac_check_vnode_readdir(struct ucred *cred, struct vnode *dvp)
-{
-	int error;
-
-	ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_readdir");
-
-	if (!mac_enforce_fs)
-		return (0);
-
-	MAC_CHECK(check_vnode_readdir, cred, dvp, &dvp->v_label);
-	return (error);
-}
-
-int
-mac_check_vnode_readlink(struct ucred *cred, struct vnode *vp)
-{
-	int error;
-
-	ASSERT_VOP_LOCKED(vp, "mac_check_vnode_readlink");
-
-	if (!mac_enforce_fs)
-		return (0);
-
-	MAC_CHECK(check_vnode_readlink, cred, vp, &vp->v_label);
-	return (error);
-}
-
-static int
-mac_check_vnode_relabel(struct ucred *cred, struct vnode *vp,
-    struct label *newlabel)
-{
-	int error;
-
-	ASSERT_VOP_LOCKED(vp, "mac_check_vnode_relabel");
-
-	MAC_CHECK(check_vnode_relabel, cred, vp, &vp->v_label, newlabel);
-
-	return (error);
-}
-
-int
-mac_check_vnode_rename_from(struct ucred *cred, struct vnode *dvp,
-    struct vnode *vp, struct componentname *cnp)
-{
-	int error;
-
-	ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_rename_from");
-	ASSERT_VOP_LOCKED(vp, "mac_check_vnode_rename_from");
-
-	if (!mac_enforce_fs)
-		return (0);
-
-	MAC_CHECK(check_vnode_rename_from, cred, dvp, &dvp->v_label, vp,
-	    &vp->v_label, cnp);
-	return (error);
-}
-
-int
-mac_check_vnode_rename_to(struct ucred *cred, struct vnode *dvp,
-    struct vnode *vp, int samedir, struct componentname *cnp)
-{
-	int error;
-
-	ASSERT_VOP_LOCKED(dvp, "mac_check_vnode_rename_to");
-	ASSERT_VOP_LOCKED(vp, "mac_check_vnode_rename_to");
-
-	if (!mac_enforce_fs)
-		return (0);
-
-	MAC_CHECK(check_vnode_rename_to, cred, dvp, &dvp->v_label, vp,
-	    vp != NULL ? &vp->v_label : NULL, samedir, cnp);
-	return (error);
-}
-
-int
-mac_check_vnode_revoke(struct ucred *cred, struct vnode *vp)
-{
-	int error;
-
-	ASSERT_VOP_LOCKED(vp, "mac_check_vnode_revoke");
-
-	if (!mac_enforce_fs)
-		return (0);
-
-	MAC_CHECK(check_vnode_revoke, cred, vp, &vp->v_label);
-	return (error);
-}
-
-int
-mac_check_vnode_setacl(struct ucred *cred, struct vnode *vp, acl_type_t type,
-    struct acl *acl)
-{
-	int error;
-
-	ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setacl");
-
-	if (!mac_enforce_fs)
-		return (0);
-
-	MAC_CHECK(check_vnode_setacl, cred, vp, &vp->v_label, type, acl);
-	return (error);
-}
-
-int
-mac_check_vnode_setextattr(struct ucred *cred, struct vnode *vp,
-    int attrnamespace, const char *name, struct uio *uio)
-{
-	int error;
-
-	ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setextattr");
-
-	if (!mac_enforce_fs)
-		return (0);
-
-	MAC_CHECK(check_vnode_setextattr, cred, vp, &vp->v_label,
-	    attrnamespace, name, uio);
-	return (error);
-}
-
-int
-mac_check_vnode_setflags(struct ucred *cred, struct vnode *vp, u_long flags)
-{
-	int error;
-
-	ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setflags");
-
-	if (!mac_enforce_fs)
-		return (0);
-
-	MAC_CHECK(check_vnode_setflags, cred, vp, &vp->v_label, flags);
-	return (error);
-}
-
-int
-mac_check_vnode_setmode(struct ucred *cred, struct vnode *vp, mode_t mode)
-{
-	int error;
-
-	ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setmode");
-
-	if (!mac_enforce_fs)
-		return (0);
-
-	MAC_CHECK(check_vnode_setmode, cred, vp, &vp->v_label, mode);
-	return (error);
-}
-
-int
-mac_check_vnode_setowner(struct ucred *cred, struct vnode *vp, uid_t uid,
-    gid_t gid)
-{
-	int error;
-
-	ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setowner");
-
-	if (!mac_enforce_fs)
-		return (0);
-
-	MAC_CHECK(check_vnode_setowner, cred, vp, &vp->v_label, uid, gid);
-	return (error);
-}
-
-int
-mac_check_vnode_setutimes(struct ucred *cred, struct vnode *vp,
-    struct timespec atime, struct timespec mtime)
-{
-	int error;
-
-	ASSERT_VOP_LOCKED(vp, "mac_check_vnode_setutimes");
-
-	if (!mac_enforce_fs)
-		return (0);
-
-	MAC_CHECK(check_vnode_setutimes, cred, vp, &vp->v_label, atime,
-	    mtime);
-	return (error);
-}
-
-int
-mac_check_vnode_stat(struct ucred *active_cred, struct ucred *file_cred,
-    struct vnode *vp)
-{
-	int error;
-
-	ASSERT_VOP_LOCKED(vp, "mac_check_vnode_stat");
-
-	if (!mac_enforce_fs)
-		return (0);
-
-	MAC_CHECK(check_vnode_stat, active_cred, file_cred, vp,
-	    &vp->v_label);
-	return (error);
-}
-
-int
-mac_check_vnode_write(struct ucred *active_cred, struct ucred *file_cred,
-    struct vnode *vp)
-{
-	int error;
-
-	ASSERT_VOP_LOCKED(vp, "mac_check_vnode_write");
-
-	if (!mac_enforce_fs)
-		return (0);
-
-	MAC_CHECK(check_vnode_write, active_cred, file_cred, vp,
-	    &vp->v_label);
-
-	return (error);
-}
-
-/*
- * When relabeling a process, call out to the policies for the maximum
- * permission allowed for each object type we know about in its
- * memory space, and revoke access (in the least surprising ways we
- * know) when necessary.  The process lock is not held here.
- */
-void
-mac_cred_mmapped_drop_perms(struct thread *td, struct ucred *cred)
-{
-
-	/* XXX freeze all other threads */
-	mac_cred_mmapped_drop_perms_recurse(td, cred,
-	    &td->td_proc->p_vmspace->vm_map);
-	/* XXX allow other threads to continue */
-}
-
-static __inline const char *
-prot2str(vm_prot_t prot)
-{
-
-	switch (prot & VM_PROT_ALL) {
-	case VM_PROT_READ:
-		return ("r--");
-	case VM_PROT_READ | VM_PROT_WRITE:
-		return ("rw-");
-	case VM_PROT_READ | VM_PROT_EXECUTE:
-		return ("r-x");
-	case VM_PROT_READ | VM_PROT_WRITE | VM_PROT_EXECUTE:
-		return ("rwx");
-	case VM_PROT_WRITE:
-		return ("-w-");
-	case VM_PROT_EXECUTE:
-		return ("--x");
-	case VM_PROT_WRITE | VM_PROT_EXECUTE:
-		return ("-wx");
-	default:
-		return ("---");
-	}
-}
-
-static void
-mac_cred_mmapped_drop_perms_recurse(struct thread *td, struct ucred *cred,
-    struct vm_map *map)
-{
-	struct vm_map_entry *vme;
-	int result;
-	vm_prot_t revokeperms;
-	vm_object_t object;
-	vm_ooffset_t offset;
-	struct vnode *vp;
-
-	if (!mac_mmap_revocation)
-		return;
-
-	vm_map_lock_read(map);
-	for (vme = map->header.next; vme != &map->header; vme = vme->next) {
-		if (vme->eflags & MAP_ENTRY_IS_SUB_MAP) {
-			mac_cred_mmapped_drop_perms_recurse(td, cred,
-			    vme->object.sub_map);
-			continue;
-		}
-		/*
-		 * Skip over entries that obviously are not shared.
-		 */
-		if (vme->eflags & (MAP_ENTRY_COW | MAP_ENTRY_NOSYNC) ||
-		    !vme->max_protection)
-			continue;
-		/*
-		 * Drill down to the deepest backing object.
-		 */
-		offset = vme->offset;
-		object = vme->object.vm_object;
-		if (object == NULL)
-			continue;
-		while (object->backing_object != NULL) {
-			object = object->backing_object;
-			offset += object->backing_object_offset;
-		}
-		/*
-		 * At the moment, vm_maps and objects aren't considered
-		 * by the MAC system, so only things with backing by a
-		 * normal object (read: vnodes) are checked.
-		 */
-		if (object->type != OBJT_VNODE)
-			continue;
-		vp = (struct vnode *)object->handle;
-		vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td);
-		result = vme->max_protection;
-		mac_check_vnode_mmap_downgrade(cred, vp, &result);
-		VOP_UNLOCK(vp, 0, td);
-		/*
-		 * Find out what maximum protection we may be allowing
-		 * now but a policy needs to get removed.
-		 */
-		revokeperms = vme->max_protection & ~result;
-		if (!revokeperms)
-			continue;
-		printf("pid %ld: revoking %s perms from %#lx:%ld "
-		    "(max %s/cur %s)\n", (long)td->td_proc->p_pid,
-		    prot2str(revokeperms), (u_long)vme->start,
-		    (long)(vme->end - vme->start),
-		    prot2str(vme->max_protection), prot2str(vme->protection));
-		vm_map_lock_upgrade(map);
-		/*
-		 * This is the really simple case: if a map has more
-		 * max_protection than is allowed, but it's not being
-		 * actually used (that is, the current protection is
-		 * still allowed), we can just wipe it out and do
-		 * nothing more.
-		 */
-		if ((vme->protection & revokeperms) == 0) {
-			vme->max_protection -= revokeperms;
-		} else {
-			if (revokeperms & VM_PROT_WRITE) {
-				/*
-				 * In the more complicated case, flush out all
-				 * pending changes to the object then turn it
-				 * copy-on-write.
-				 */
-				vm_object_reference(object);
-				vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td);
-				VM_OBJECT_LOCK(object);
-				vm_object_page_clean(object,
-				    OFF_TO_IDX(offset),
-				    OFF_TO_IDX(offset + vme->end - vme->start +
-					PAGE_MASK),
-				    OBJPC_SYNC);
-				VM_OBJECT_UNLOCK(object);
-				VOP_UNLOCK(vp, 0, td);
-				vm_object_deallocate(object);
-				/*
-				 * Why bother if there's no read permissions
-				 * anymore?  For the rest, we need to leave
-				 * the write permissions on for COW, or
-				 * remove them entirely if configured to.
-				 */
-				if (!mac_mmap_revocation_via_cow) {
-					vme->max_protection &= ~VM_PROT_WRITE;
-					vme->protection &= ~VM_PROT_WRITE;
-				} if ((revokeperms & VM_PROT_READ) == 0)
-					vme->eflags |= MAP_ENTRY_COW |
-					    MAP_ENTRY_NEEDS_COPY;
-			}
-			if (revokeperms & VM_PROT_EXECUTE) {
-				vme->max_protection &= ~VM_PROT_EXECUTE;
-				vme->protection &= ~VM_PROT_EXECUTE;
-			}
-			if (revokeperms & VM_PROT_READ) {
-				vme->max_protection = 0;
-				vme->protection = 0;
-			}
-			pmap_protect(map->pmap, vme->start, vme->end,
-			    vme->protection & ~revokeperms);
-			vm_map_simplify_entry(map, vme);
-		}
-		vm_map_lock_downgrade(map);
-	}
-	vm_map_unlock_read(map);
-}
-
-/*
- * When the subject's label changes, it may require revocation of privilege
- * to mapped objects.  This can't be done on-the-fly later with a unified
- * buffer cache.
- */
-static void
-mac_relabel_cred(struct ucred *cred, struct label *newlabel)
-{
-
-	MAC_PERFORM(relabel_cred, cred, newlabel);
-}
-
-void
-mac_relabel_vnode(struct ucred *cred, struct vnode *vp, struct label *newlabel)
-{
-
-	MAC_PERFORM(relabel_vnode, cred, vp, &vp->v_label, newlabel);
-}
-
-void
-mac_create_ifnet(struct ifnet *ifnet)
-{
-
-	MAC_PERFORM(create_ifnet, ifnet, &ifnet->if_label);
-}
-
-void
-mac_create_bpfdesc(struct ucred *cred, struct bpf_d *bpf_d)
-{
-
-	MAC_PERFORM(create_bpfdesc, cred, bpf_d, &bpf_d->bd_label);
-}
-
-void
-mac_create_socket(struct ucred *cred, struct socket *socket)
-{
-
-	MAC_PERFORM(create_socket, cred, socket, &socket->so_label);
-}
-
-void
-mac_create_pipe(struct ucred *cred, struct pipe *pipe)
-{
-
-	MAC_PERFORM(create_pipe, cred, pipe, pipe->pipe_label);
-}
-
-void
-mac_create_socket_from_socket(struct socket *oldsocket,
-    struct socket *newsocket)
-{
-
-	MAC_PERFORM(create_socket_from_socket, oldsocket, &oldsocket->so_label,
-	    newsocket, &newsocket->so_label);
-}
-
-static void
-mac_relabel_socket(struct ucred *cred, struct socket *socket,
-    struct label *newlabel)
-{
-
-	MAC_PERFORM(relabel_socket, cred, socket, &socket->so_label, newlabel);
-}
-
-static void
-mac_relabel_pipe(struct ucred *cred, struct pipe *pipe, struct label *newlabel)
-{
-
-	MAC_PERFORM(relabel_pipe, cred, pipe, pipe->pipe_label, newlabel);
-}
-
-void
-mac_set_socket_peer_from_mbuf(struct mbuf *mbuf, struct socket *socket)
-{
-	struct label *label;
-
-	label = mbuf_to_label(mbuf);
-
-	MAC_PERFORM(set_socket_peer_from_mbuf, mbuf, label, socket,
-	    &socket->so_peerlabel);
-}
-
-void
-mac_set_socket_peer_from_socket(struct socket *oldsocket,
-    struct socket *newsocket)
-{
-
-	MAC_PERFORM(set_socket_peer_from_socket, oldsocket,
-	    &oldsocket->so_label, newsocket, &newsocket->so_peerlabel);
-}
-
-void
-mac_create_datagram_from_ipq(struct ipq *ipq, struct mbuf *datagram)
-{
-	struct label *label;
-
-	label = mbuf_to_label(datagram);
-
-	MAC_PERFORM(create_datagram_from_ipq, ipq, &ipq->ipq_label,
-	    datagram, label);
-}
-
-void
-mac_create_fragment(struct mbuf *datagram, struct mbuf *fragment)
-{
-	struct label *datagramlabel, *fragmentlabel;
-
-	datagramlabel = mbuf_to_label(datagram);
-	fragmentlabel = mbuf_to_label(fragment);
-
-	MAC_PERFORM(create_fragment, datagram, datagramlabel, fragment,
-	    fragmentlabel);
-}
-
-void
-mac_create_ipq(struct mbuf *fragment, struct ipq *ipq)
-{
-	struct label *label;
-
-	label = mbuf_to_label(fragment);
-
-	MAC_PERFORM(create_ipq, fragment, label, ipq, &ipq->ipq_label);
-}
-
-void
-mac_create_mbuf_from_mbuf(struct mbuf *oldmbuf, struct mbuf *newmbuf)
-{
-	struct label *oldmbuflabel, *newmbuflabel;
-
-	oldmbuflabel = mbuf_to_label(oldmbuf);
-	newmbuflabel = mbuf_to_label(newmbuf);
-
-	MAC_PERFORM(create_mbuf_from_mbuf, oldmbuf, oldmbuflabel, newmbuf,
-	    newmbuflabel);
-}
-
-void
-mac_create_mbuf_from_bpfdesc(struct bpf_d *bpf_d, struct mbuf *mbuf)
-{
-	struct label *label;
-
-	label = mbuf_to_label(mbuf);
-
-	MAC_PERFORM(create_mbuf_from_bpfdesc, bpf_d, &bpf_d->bd_label, mbuf,
-	    label);
-}
-
-void
-mac_create_mbuf_linklayer(struct ifnet *ifnet, struct mbuf *mbuf)
-{
-	struct label *label;
-
-	label = mbuf_to_label(mbuf);
-
-	MAC_PERFORM(create_mbuf_linklayer, ifnet, &ifnet->if_label, mbuf,
-	    label);
-}
-
-void
-mac_create_mbuf_from_ifnet(struct ifnet *ifnet, struct mbuf *mbuf)
-{
-	struct label *label;
-
-	label = mbuf_to_label(mbuf);
-
-	MAC_PERFORM(create_mbuf_from_ifnet, ifnet, &ifnet->if_label, mbuf,
-	    label);
-}
-
-void
-mac_create_mbuf_multicast_encap(struct mbuf *oldmbuf, struct ifnet *ifnet,
-    struct mbuf *newmbuf)
-{
-	struct label *oldmbuflabel, *newmbuflabel;
-
-	oldmbuflabel = mbuf_to_label(oldmbuf);
-	newmbuflabel = mbuf_to_label(newmbuf);
-
-	MAC_PERFORM(create_mbuf_multicast_encap, oldmbuf, oldmbuflabel,
-	    ifnet, &ifnet->if_label, newmbuf, newmbuflabel);
-}
-
-void
-mac_create_mbuf_netlayer(struct mbuf *oldmbuf, struct mbuf *newmbuf)
-{
-	struct label *oldmbuflabel, *newmbuflabel;
-
-	oldmbuflabel = mbuf_to_label(oldmbuf);
-	newmbuflabel = mbuf_to_label(newmbuf);
-
-	MAC_PERFORM(create_mbuf_netlayer, oldmbuf, oldmbuflabel, newmbuf,
-	    newmbuflabel);
-}
-
-int
-mac_fragment_match(struct mbuf *fragment, struct ipq *ipq)
-{
-	struct label *label;
-	int result;
-
-	label = mbuf_to_label(fragment);
-
-	result = 1;
-	MAC_BOOLEAN(fragment_match, &&, fragment, label, ipq,
-	    &ipq->ipq_label);
-
-	return (result);
-}
-
-void
-mac_reflect_mbuf_icmp(struct mbuf *m)
-{
-	struct label *label;
-
-	label = mbuf_to_label(m);
-
-	MAC_PERFORM(reflect_mbuf_icmp, m, label);
-}
-void
-mac_reflect_mbuf_tcp(struct mbuf *m)
-{
-	struct label *label;
-
-	label = mbuf_to_label(m);
-
-	MAC_PERFORM(reflect_mbuf_tcp, m, label);
-}
-
-void
-mac_update_ipq(struct mbuf *fragment, struct ipq *ipq)
-{
-	struct label *label;
-
-	label = mbuf_to_label(fragment);
-
-	MAC_PERFORM(update_ipq, fragment, label, ipq, &ipq->ipq_label);
-}
-
-void
-mac_create_mbuf_from_socket(struct socket *socket, struct mbuf *mbuf)
-{
-	struct label *label;
-
-	label = mbuf_to_label(mbuf);
-
-	MAC_PERFORM(create_mbuf_from_socket, socket, &socket->so_label, mbuf,
-	    label);
-}
-
-void
-mac_create_mount(struct ucred *cred, struct mount *mp)
-{
-
-	MAC_PERFORM(create_mount, cred, mp, &mp->mnt_mntlabel,
-	    &mp->mnt_fslabel);
-}
-
-void
-mac_create_root_mount(struct ucred *cred, struct mount *mp)
-{
-
-	MAC_PERFORM(create_root_mount, cred, mp, &mp->mnt_mntlabel,
-	    &mp->mnt_fslabel);
-}
-
-int
-mac_check_bpfdesc_receive(struct bpf_d *bpf_d, struct ifnet *ifnet)
-{
-	int error;
-
-	if (!mac_enforce_network)
-		return (0);
-
-	MAC_CHECK(check_bpfdesc_receive, bpf_d, &bpf_d->bd_label, ifnet,
-	    &ifnet->if_label);
-
-	return (error);
-}
-
-static int
-mac_check_cred_relabel(struct ucred *cred, struct label *newlabel)
-{
-	int error;
-
-	MAC_CHECK(check_cred_relabel, cred, newlabel);
-
-	return (error);
-}
-
-int
-mac_check_cred_visible(struct ucred *u1, struct ucred *u2)
-{
-	int error;
-
-	if (!mac_enforce_process)
-		return (0);
-
-	MAC_CHECK(check_cred_visible, u1, u2);
-
-	return (error);
-}
-
-int
-mac_check_ifnet_transmit(struct ifnet *ifnet, struct mbuf *mbuf)
-{
-	struct label *label;
-	int error;
-
-	M_ASSERTPKTHDR(mbuf);
-
-	if (!mac_enforce_network)
-		return (0);
-
-	label = mbuf_to_label(mbuf);
-
-	MAC_CHECK(check_ifnet_transmit, ifnet, &ifnet->if_label, mbuf,
-	    label);
-
-	return (error);
-}
-
 int
 mac_check_kenv_dump(struct ucred *cred)
 {
@@ -2604,266 +152,6 @@ mac_check_kld_unload(struct ucred *cred)
 }
 
 int
-mac_check_mount_stat(struct ucred *cred, struct mount *mount)
-{
-	int error;
-
-	if (!mac_enforce_fs)
-		return (0);
-
-	MAC_CHECK(check_mount_stat, cred, mount, &mount->mnt_mntlabel);
-
-	return (error);
-}
-
-int
-mac_check_pipe_ioctl(struct ucred *cred, struct pipe *pipe, unsigned long cmd,
-    void *data)
-{
-	int error;
-
-	PIPE_LOCK_ASSERT(pipe, MA_OWNED);
-
-	if (!mac_enforce_pipe)
-		return (0);
-
-	MAC_CHECK(check_pipe_ioctl, cred, pipe, pipe->pipe_label, cmd, data);
-
-	return (error);
-}
-
-int
-mac_check_pipe_poll(struct ucred *cred, struct pipe *pipe)
-{
-	int error;
-
-	PIPE_LOCK_ASSERT(pipe, MA_OWNED);
-
-	if (!mac_enforce_pipe)
-		return (0);
-
-	MAC_CHECK(check_pipe_poll, cred, pipe, pipe->pipe_label);
-
-	return (error);
-}
-
-int
-mac_check_pipe_read(struct ucred *cred, struct pipe *pipe)
-{
-	int error;
-
-	PIPE_LOCK_ASSERT(pipe, MA_OWNED);
-
-	if (!mac_enforce_pipe)
-		return (0);
-
-	MAC_CHECK(check_pipe_read, cred, pipe, pipe->pipe_label);
-
-	return (error);
-}
-
-static int
-mac_check_pipe_relabel(struct ucred *cred, struct pipe *pipe,
-    struct label *newlabel)
-{
-	int error;
-
-	PIPE_LOCK_ASSERT(pipe, MA_OWNED);
-
-	if (!mac_enforce_pipe)
-		return (0);
-
-	MAC_CHECK(check_pipe_relabel, cred, pipe, pipe->pipe_label, newlabel);
-
-	return (error);
-}
-
-int
-mac_check_pipe_stat(struct ucred *cred, struct pipe *pipe)
-{
-	int error;
-
-	PIPE_LOCK_ASSERT(pipe, MA_OWNED);
-
-	if (!mac_enforce_pipe)
-		return (0);
-
-	MAC_CHECK(check_pipe_stat, cred, pipe, pipe->pipe_label);
-
-	return (error);
-}
-
-int
-mac_check_pipe_write(struct ucred *cred, struct pipe *pipe)
-{
-	int error;
-
-	PIPE_LOCK_ASSERT(pipe, MA_OWNED);
-
-	if (!mac_enforce_pipe)
-		return (0);
-
-	MAC_CHECK(check_pipe_write, cred, pipe, pipe->pipe_label);
-
-	return (error);
-}
-
-int
-mac_check_proc_debug(struct ucred *cred, struct proc *proc)
-{
-	int error;
-
-	PROC_LOCK_ASSERT(proc, MA_OWNED);
-
-	if (!mac_enforce_process)
-		return (0);
-
-	MAC_CHECK(check_proc_debug, cred, proc);
-
-	return (error);
-}
-
-int
-mac_check_proc_sched(struct ucred *cred, struct proc *proc)
-{
-	int error;
-
-	PROC_LOCK_ASSERT(proc, MA_OWNED);
-
-	if (!mac_enforce_process)
-		return (0);
-
-	MAC_CHECK(check_proc_sched, cred, proc);
-
-	return (error);
-}
-
-int
-mac_check_proc_signal(struct ucred *cred, struct proc *proc, int signum)
-{
-	int error;
-
-	PROC_LOCK_ASSERT(proc, MA_OWNED);
-
-	if (!mac_enforce_process)
-		return (0);
-
-	MAC_CHECK(check_proc_signal, cred, proc, signum);
-
-	return (error);
-}
-
-int
-mac_check_socket_bind(struct ucred *ucred, struct socket *socket,
-    struct sockaddr *sockaddr)
-{
-	int error;
-
-	if (!mac_enforce_socket)
-		return (0);
-
-	MAC_CHECK(check_socket_bind, ucred, socket, &socket->so_label,
-	    sockaddr);
-
-	return (error);
-}
-
-int
-mac_check_socket_connect(struct ucred *cred, struct socket *socket,
-    struct sockaddr *sockaddr)
-{
-	int error;
-
-	if (!mac_enforce_socket)
-		return (0);
-
-	MAC_CHECK(check_socket_connect, cred, socket, &socket->so_label,
-	    sockaddr);
-
-	return (error);
-}
-
-int
-mac_check_socket_deliver(struct socket *socket, struct mbuf *mbuf)
-{
-	struct label *label;
-	int error;
-
-	if (!mac_enforce_socket)
-		return (0);
-
-	label = mbuf_to_label(mbuf);
-
-	MAC_CHECK(check_socket_deliver, socket, &socket->so_label, mbuf,
-	    label);
-
-	return (error);
-}
-
-int
-mac_check_socket_listen(struct ucred *cred, struct socket *socket)
-{
-	int error;
-
-	if (!mac_enforce_socket)
-		return (0);
-
-	MAC_CHECK(check_socket_listen, cred, socket, &socket->so_label);
-	return (error);
-}
-
-int
-mac_check_socket_receive(struct ucred *cred, struct socket *so)
-{
-	int error;
-
-	if (!mac_enforce_socket)
-		return (0);
-
-	MAC_CHECK(check_socket_receive, cred, so, &so->so_label);
-
-	return (error);
-}
-
-static int
-mac_check_socket_relabel(struct ucred *cred, struct socket *socket,
-    struct label *newlabel)
-{
-	int error;
-
-	MAC_CHECK(check_socket_relabel, cred, socket, &socket->so_label,
-	    newlabel);
-
-	return (error);
-}
-
-int
-mac_check_socket_send(struct ucred *cred, struct socket *so)
-{
-	int error;
-
-	if (!mac_enforce_socket)
-		return (0);
-
-	MAC_CHECK(check_socket_send, cred, so, &so->so_label);
-
-	return (error);
-}
-
-int
-mac_check_socket_visible(struct ucred *cred, struct socket *socket)
-{
-	int error;
-
-	if (!mac_enforce_socket)
-		return (0);
-
-	MAC_CHECK(check_socket_visible, cred, socket, &socket->so_label);
-
-	return (error);
-}
-
-int
 mac_check_sysarch_ioperm(struct ucred *cred)
 {
 	int error;
@@ -2978,981 +266,3 @@ mac_check_system_sysctl(struct ucred *cred, int *name, u_int namelen,
 
 	return (error);
 }
-
-int
-mac_ioctl_ifnet_get(struct ucred *cred, struct ifreq *ifr,
-    struct ifnet *ifnet)
-{
-	char *elements, *buffer;
-	struct mac mac;
-	int error;
-
-	error = copyin(ifr->ifr_ifru.ifru_data, &mac, sizeof(mac));
-	if (error)
-		return (error);
-
-	error = mac_check_structmac_consistent(&mac);
-	if (error)
-		return (error);
-
-	elements = malloc(mac.m_buflen, M_MACTEMP, M_WAITOK);
-	error = copyinstr(mac.m_string, elements, mac.m_buflen, NULL);
-	if (error) {
-		free(elements, M_MACTEMP);
-		return (error);
-	}
-
-	buffer = malloc(mac.m_buflen, M_MACTEMP, M_WAITOK | M_ZERO);
-	error = mac_externalize_ifnet_label(&ifnet->if_label, elements,
-	    buffer, mac.m_buflen, M_WAITOK);
-	if (error == 0)
-		error = copyout(buffer, mac.m_string, strlen(buffer)+1);
-
-	free(buffer, M_MACTEMP);
-	free(elements, M_MACTEMP);
-
-	return (error);
-}
-
-int
-mac_ioctl_ifnet_set(struct ucred *cred, struct ifreq *ifr,
-    struct ifnet *ifnet)
-{
-	struct label intlabel;
-	struct mac mac;
-	char *buffer;
-	int error;
-
-	error = copyin(ifr->ifr_ifru.ifru_data, &mac, sizeof(mac));
-	if (error)
-		return (error);
-
-	error = mac_check_structmac_consistent(&mac);
-	if (error)
-		return (error);
-
-	buffer = malloc(mac.m_buflen, M_MACTEMP, M_WAITOK);
-	error = copyinstr(mac.m_string, buffer, mac.m_buflen, NULL);
-	if (error) {
-		free(buffer, M_MACTEMP);
-		return (error);
-	}
-
-	mac_init_ifnet_label(&intlabel);
-	error = mac_internalize_ifnet_label(&intlabel, buffer);
-	free(buffer, M_MACTEMP);
-	if (error) {
-		mac_destroy_ifnet_label(&intlabel);
-		return (error);
-	}
-
-	/*
-	 * XXX: Note that this is a redundant privilege check, since
-	 * policies impose this check themselves if required by the
-	 * policy.  Eventually, this should go away.
-	 */
-	error = suser_cred(cred, 0);
-	if (error) {
-		mac_destroy_ifnet_label(&intlabel);
-		return (error);
-	}
-
-	MAC_CHECK(check_ifnet_relabel, cred, ifnet, &ifnet->if_label,
-	    &intlabel);
-	if (error) {
-		mac_destroy_ifnet_label(&intlabel);
-		return (error);
-	}
-
-	MAC_PERFORM(relabel_ifnet, cred, ifnet, &ifnet->if_label, &intlabel);
-
-	mac_destroy_ifnet_label(&intlabel);
-	return (0);
-}
-
-void
-mac_create_devfs_device(struct mount *mp, dev_t dev, struct devfs_dirent *de)
-{
-
-	MAC_PERFORM(create_devfs_device, mp, dev, de, &de->de_label);
-}
-
-void
-mac_create_devfs_symlink(struct ucred *cred, struct mount *mp,
-    struct devfs_dirent *dd, struct devfs_dirent *de)
-{
-
-	MAC_PERFORM(create_devfs_symlink, cred, mp, dd, &dd->de_label, de,
-	    &de->de_label);
-}
-
-void
-mac_create_devfs_directory(struct mount *mp, char *dirname, int dirnamelen,
-    struct devfs_dirent *de)
-{
-
-	MAC_PERFORM(create_devfs_directory, mp, dirname, dirnamelen, de,
-	    &de->de_label);
-}
-
-int
-mac_setsockopt_label_set(struct ucred *cred, struct socket *so,
-    struct mac *mac)
-{
-	struct label intlabel;
-	char *buffer;
-	int error;
-
-	error = mac_check_structmac_consistent(mac);
-	if (error)
-		return (error);
-
-	buffer = malloc(mac->m_buflen, M_MACTEMP, M_WAITOK);
-	error = copyinstr(mac->m_string, buffer, mac->m_buflen, NULL);
-	if (error) {
-		free(buffer, M_MACTEMP);
-		return (error);
-	}
-
-	mac_init_socket_label(&intlabel, M_WAITOK);
-	error = mac_internalize_socket_label(&intlabel, buffer);
-	free(buffer, M_MACTEMP);
-	if (error) {
-		mac_destroy_socket_label(&intlabel);
-		return (error);
-	}
-
-	mac_check_socket_relabel(cred, so, &intlabel);
-	if (error) {
-		mac_destroy_socket_label(&intlabel);
-		return (error);
-	}
-
-	mac_relabel_socket(cred, so, &intlabel);
-
-	mac_destroy_socket_label(&intlabel);
-	return (0);
-}
-
-int
-mac_pipe_label_set(struct ucred *cred, struct pipe *pipe, struct label *label)
-{
-	int error;
-
-	PIPE_LOCK_ASSERT(pipe, MA_OWNED);
-
-	error = mac_check_pipe_relabel(cred, pipe, label);
-	if (error)
-		return (error);
-
-	mac_relabel_pipe(cred, pipe, label);
-
-	return (0);
-}
-
-int
-mac_getsockopt_label_get(struct ucred *cred, struct socket *so,
-    struct mac *mac)
-{
-	char *buffer, *elements;
-	int error;
-
-	error = mac_check_structmac_consistent(mac);
-	if (error)
-		return (error);
-
-	elements = malloc(mac->m_buflen, M_MACTEMP, M_WAITOK);
-	error = copyinstr(mac->m_string, elements, mac->m_buflen, NULL);
-	if (error) {
-		free(elements, M_MACTEMP);
-		return (error);
-	}
-
-	buffer = malloc(mac->m_buflen, M_MACTEMP, M_WAITOK | M_ZERO);
-	error = mac_externalize_socket_label(&so->so_label, elements,
-	    buffer, mac->m_buflen, M_WAITOK);
-	if (error == 0)
-		error = copyout(buffer, mac->m_string, strlen(buffer)+1);
-
-	free(buffer, M_MACTEMP);
-	free(elements, M_MACTEMP);
-
-	return (error);
-}
-
-int
-mac_getsockopt_peerlabel_get(struct ucred *cred, struct socket *so,
-    struct mac *mac)
-{
-	char *elements, *buffer;
-	int error;
-
-	error = mac_check_structmac_consistent(mac);
-	if (error)
-		return (error);
-
-	elements = malloc(mac->m_buflen, M_MACTEMP, M_WAITOK);
-	error = copyinstr(mac->m_string, elements, mac->m_buflen, NULL);
-	if (error) {
-		free(elements, M_MACTEMP);
-		return (error);
-	}
-
-	buffer = malloc(mac->m_buflen, M_MACTEMP, M_WAITOK | M_ZERO);
-	error = mac_externalize_socket_peer_label(&so->so_peerlabel,
-	    elements, buffer, mac->m_buflen, M_WAITOK);
-	if (error == 0)
-		error = copyout(buffer, mac->m_string, strlen(buffer)+1);
-
-	free(buffer, M_MACTEMP);
-	free(elements, M_MACTEMP);
-
-	return (error);
-}
-
-/*
- * Implementation of VOP_SETLABEL() that relies on extended attributes
- * to store label data.  Can be referenced by filesystems supporting
- * extended attributes.
- */
-int
-vop_stdsetlabel_ea(struct vop_setlabel_args *ap)
-{
-	struct vnode *vp = ap->a_vp;
-	struct label *intlabel = ap->a_label;
-	int error;
-
-	ASSERT_VOP_LOCKED(vp, "vop_stdsetlabel_ea");
-
-	if ((vp->v_mount->mnt_flag & MNT_MULTILABEL) == 0)
-		return (EOPNOTSUPP);
-
-	error = mac_setlabel_vnode_extattr(ap->a_cred, vp, intlabel);
-	if (error)
-		return (error);
-
-	mac_relabel_vnode(ap->a_cred, vp, intlabel);
-
-	return (0);
-}
-
-static int
-vn_setlabel(struct vnode *vp, struct label *intlabel, struct ucred *cred)
-{
-	int error;
-
-	if (vp->v_mount == NULL) {
-		/* printf("vn_setlabel: null v_mount\n"); */
-		if (vp->v_type != VNON)
-			printf("vn_setlabel: null v_mount with non-VNON\n");
-		return (EBADF);
-	}
-
-	if ((vp->v_mount->mnt_flag & MNT_MULTILABEL) == 0)
-		return (EOPNOTSUPP);
-
-	/*
-	 * Multi-phase commit.  First check the policies to confirm the
-	 * change is OK.  Then commit via the filesystem.  Finally,
-	 * update the actual vnode label.  Question: maybe the filesystem
-	 * should update the vnode at the end as part of VOP_SETLABEL()?
-	 */
-	error = mac_check_vnode_relabel(cred, vp, intlabel);
-	if (error)
-		return (error);
-
-	/*
-	 * VADMIN provides the opportunity for the filesystem to make
-	 * decisions about who is and is not able to modify labels
-	 * and protections on files.  This might not be right.  We can't
-	 * assume VOP_SETLABEL() will do it, because we might implement
-	 * that as part of vop_stdsetlabel_ea().
-	 */
-	error = VOP_ACCESS(vp, VADMIN, cred, curthread);
-	if (error)
-		return (error);
-
-	error = VOP_SETLABEL(vp, intlabel, cred, curthread);
-	if (error)
-		return (error);
-
-	return (0);
-}
-
-int
-__mac_get_pid(struct thread *td, struct __mac_get_pid_args *uap)
-{
-	char *elements, *buffer;
-	struct mac mac;
-	struct proc *tproc;
-	struct ucred *tcred;
-	int error;
-
-	error = copyin(uap->mac_p, &mac, sizeof(mac));
-	if (error)
-		return (error);
-
-	error = mac_check_structmac_consistent(&mac);
-	if (error)
-		return (error);
-
-	tproc = pfind(uap->pid);
-	if (tproc == NULL)
-		return (ESRCH);
-
-	tcred = NULL;				/* Satisfy gcc. */
-	error = p_cansee(td, tproc);
-	if (error == 0)
-		tcred = crhold(tproc->p_ucred);
-	PROC_UNLOCK(tproc);
-	if (error)
-		return (error);
-
-	elements = malloc(mac.m_buflen, M_MACTEMP, M_WAITOK);
-	error = copyinstr(mac.m_string, elements, mac.m_buflen, NULL);
-	if (error) {
-		free(elements, M_MACTEMP);
-		crfree(tcred);
-		return (error);
-	}
-
-	buffer = malloc(mac.m_buflen, M_MACTEMP, M_WAITOK | M_ZERO);
-	error = mac_externalize_cred_label(&tcred->cr_label, elements,
-	    buffer, mac.m_buflen, M_WAITOK);
-	if (error == 0)
-		error = copyout(buffer, mac.m_string, strlen(buffer)+1);
-
-	free(buffer, M_MACTEMP);
-	free(elements, M_MACTEMP);
-	crfree(tcred);
-	return (error);
-}
-
-/*
- * MPSAFE
- */
-int
-__mac_get_proc(struct thread *td, struct __mac_get_proc_args *uap)
-{
-	char *elements, *buffer;
-	struct mac mac;
-	int error;
-
-	error = copyin(uap->mac_p, &mac, sizeof(mac));
-	if (error)
-		return (error);
-
-	error = mac_check_structmac_consistent(&mac);
-	if (error)
-		return (error);
-
-	elements = malloc(mac.m_buflen, M_MACTEMP, M_WAITOK);
-	error = copyinstr(mac.m_string, elements, mac.m_buflen, NULL);
-	if (error) {
-		free(elements, M_MACTEMP);
-		return (error);
-	}
-
-	buffer = malloc(mac.m_buflen, M_MACTEMP, M_WAITOK | M_ZERO);
-	error = mac_externalize_cred_label(&td->td_ucred->cr_label,
-	    elements, buffer, mac.m_buflen, M_WAITOK);
-	if (error == 0)
-		error = copyout(buffer, mac.m_string, strlen(buffer)+1);
-
-	free(buffer, M_MACTEMP);
-	free(elements, M_MACTEMP);
-	return (error);
-}
-
-/*
- * MPSAFE
- */
-int
-__mac_set_proc(struct thread *td, struct __mac_set_proc_args *uap)
-{
-	struct ucred *newcred, *oldcred;
-	struct label intlabel;
-	struct proc *p;
-	struct mac mac;
-	char *buffer;
-	int error;
-
-	error = copyin(uap->mac_p, &mac, sizeof(mac));
-	if (error)
-		return (error);
-
-	error = mac_check_structmac_consistent(&mac);
-	if (error)
-		return (error);
-
-	buffer = malloc(mac.m_buflen, M_MACTEMP, M_WAITOK);
-	error = copyinstr(mac.m_string, buffer, mac.m_buflen, NULL);
-	if (error) {
-		free(buffer, M_MACTEMP);
-		return (error);
-	}
-
-	mac_init_cred_label(&intlabel);
-	error = mac_internalize_cred_label(&intlabel, buffer);
-	free(buffer, M_MACTEMP);
-	if (error) {
-		mac_destroy_cred_label(&intlabel);
-		return (error);
-	}
-
-	newcred = crget();
-
-	p = td->td_proc;
-	PROC_LOCK(p);
-	oldcred = p->p_ucred;
-
-	error = mac_check_cred_relabel(oldcred, &intlabel);
-	if (error) {
-		PROC_UNLOCK(p);
-		crfree(newcred);
-		goto out;
-	}
-
-	setsugid(p);
-	crcopy(newcred, oldcred);
-	mac_relabel_cred(newcred, &intlabel);
-	p->p_ucred = newcred;
-
-	/*
-	 * Grab additional reference for use while revoking mmaps, prior
-	 * to releasing the proc lock and sharing the cred.
-	 */
-	crhold(newcred);
-	PROC_UNLOCK(p);
-
-	if (mac_enforce_vm) {
-		mtx_lock(&Giant);
-		mac_cred_mmapped_drop_perms(td, newcred);
-		mtx_unlock(&Giant);
-	}
-
-	crfree(newcred);	/* Free revocation reference. */
-	crfree(oldcred);
-
-out:
-	mac_destroy_cred_label(&intlabel);
-	return (error);
-}
-
-/*
- * MPSAFE
- */
-int
-__mac_get_fd(struct thread *td, struct __mac_get_fd_args *uap)
-{
-	char *elements, *buffer;
-	struct label intlabel;
-	struct file *fp;
-	struct mac mac;
-	struct vnode *vp;
-	struct pipe *pipe;
-	short label_type;
-	int error;
-
-	error = copyin(uap->mac_p, &mac, sizeof(mac));
-	if (error)
-		return (error);
-
-	error = mac_check_structmac_consistent(&mac);
-	if (error)
-		return (error);
-
-	elements = malloc(mac.m_buflen, M_MACTEMP, M_WAITOK);
-	error = copyinstr(mac.m_string, elements, mac.m_buflen, NULL);
-	if (error) {
-		free(elements, M_MACTEMP);
-		return (error);
-	}
-
-	buffer = malloc(mac.m_buflen, M_MACTEMP, M_WAITOK | M_ZERO);
-	mtx_lock(&Giant);				/* VFS */
-	error = fget(td, uap->fd, &fp);
-	if (error)
-		goto out;
-
-	label_type = fp->f_type;
-	switch (fp->f_type) {
-	case DTYPE_FIFO:
-	case DTYPE_VNODE:
-		vp = fp->f_vnode;
-
-		mac_init_vnode_label(&intlabel);
-
-		vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td);
-		mac_copy_vnode_label(&vp->v_label, &intlabel);
-		VOP_UNLOCK(vp, 0, td);
-
-		break;
-	case DTYPE_PIPE:
-		pipe = fp->f_data;
-
-		mac_init_pipe_label(&intlabel);
-
-		PIPE_LOCK(pipe);
-		mac_copy_pipe_label(pipe->pipe_label, &intlabel);
-		PIPE_UNLOCK(pipe);
-		break;
-	default:
-		error = EINVAL;
-		fdrop(fp, td);
-		goto out;
-	}
-	fdrop(fp, td);
-
-	switch (label_type) {
-	case DTYPE_FIFO:
-	case DTYPE_VNODE:
-		if (error == 0)
-			error = mac_externalize_vnode_label(&intlabel,
-			    elements, buffer, mac.m_buflen, M_WAITOK);
-		mac_destroy_vnode_label(&intlabel);
-		break;
-	case DTYPE_PIPE:
-		error = mac_externalize_pipe_label(&intlabel, elements,
-		    buffer, mac.m_buflen, M_WAITOK);
-		mac_destroy_pipe_label(&intlabel);
-		break;
-	default:
-		panic("__mac_get_fd: corrupted label_type");
-	}
-
-	if (error == 0)
-		error = copyout(buffer, mac.m_string, strlen(buffer)+1);
-
-out:
-	mtx_unlock(&Giant);				/* VFS */
-	free(buffer, M_MACTEMP);
-	free(elements, M_MACTEMP);
-
-	return (error);
-}
-
-/*
- * MPSAFE
- */
-int
-__mac_get_file(struct thread *td, struct __mac_get_file_args *uap)
-{
-	char *elements, *buffer;
-	struct nameidata nd;
-	struct label intlabel;
-	struct mac mac;
-	int error;
-
-	error = copyin(uap->mac_p, &mac, sizeof(mac));
-	if (error)
-		return (error);
-
-	error = mac_check_structmac_consistent(&mac);
-	if (error)
-		return (error);
-
-	elements = malloc(mac.m_buflen, M_MACTEMP, M_WAITOK);
-	error = copyinstr(mac.m_string, elements, mac.m_buflen, NULL);
-	if (error) {
-		free(elements, M_MACTEMP);
-		return (error);
-	}
-
-	buffer = malloc(mac.m_buflen, M_MACTEMP, M_WAITOK | M_ZERO);
-	mtx_lock(&Giant);				/* VFS */
-	NDINIT(&nd, LOOKUP, LOCKLEAF | FOLLOW, UIO_USERSPACE, uap->path_p,
-	    td);
-	error = namei(&nd);
-	if (error)
-		goto out;
-
-	mac_init_vnode_label(&intlabel);
-	mac_copy_vnode_label(&nd.ni_vp->v_label, &intlabel);
-	error = mac_externalize_vnode_label(&intlabel, elements, buffer,
-	    mac.m_buflen, M_WAITOK);
-
-	NDFREE(&nd, 0);
-	mac_destroy_vnode_label(&intlabel);
-
-	if (error == 0)
-		error = copyout(buffer, mac.m_string, strlen(buffer)+1);
-
-out:
-	mtx_unlock(&Giant);				/* VFS */
-
-	free(buffer, M_MACTEMP);
-	free(elements, M_MACTEMP);
-
-	return (error);
-}
-
-/*
- * MPSAFE
- */
-int
-__mac_get_link(struct thread *td, struct __mac_get_link_args *uap)
-{
-	char *elements, *buffer;
-	struct nameidata nd;
-	struct label intlabel;
-	struct mac mac;
-	int error;
-
-	error = copyin(uap->mac_p, &mac, sizeof(mac));
-	if (error)
-		return (error);
-
-	error = mac_check_structmac_consistent(&mac);
-	if (error)
-		return (error);
-
-	elements = malloc(mac.m_buflen, M_MACTEMP, M_WAITOK);
-	error = copyinstr(mac.m_string, elements, mac.m_buflen, NULL);
-	if (error) {
-		free(elements, M_MACTEMP);
-		return (error);
-	}
-
-	buffer = malloc(mac.m_buflen, M_MACTEMP, M_WAITOK | M_ZERO);
-	mtx_lock(&Giant);				/* VFS */
-	NDINIT(&nd, LOOKUP, LOCKLEAF | NOFOLLOW, UIO_USERSPACE, uap->path_p,
-	    td);
-	error = namei(&nd);
-	if (error)
-		goto out;
-
-	mac_init_vnode_label(&intlabel);
-	mac_copy_vnode_label(&nd.ni_vp->v_label, &intlabel);
-	error = mac_externalize_vnode_label(&intlabel, elements, buffer,
-	    mac.m_buflen, M_WAITOK);
-	NDFREE(&nd, 0);
-	mac_destroy_vnode_label(&intlabel);
-
-	if (error == 0)
-		error = copyout(buffer, mac.m_string, strlen(buffer)+1);
-
-out:
-	mtx_unlock(&Giant);				/* VFS */
-
-	free(buffer, M_MACTEMP);
-	free(elements, M_MACTEMP);
-
-	return (error);
-}
-
-/*
- * MPSAFE
- */
-int
-__mac_set_fd(struct thread *td, struct __mac_set_fd_args *uap)
-{
-	struct label intlabel;
-	struct pipe *pipe;
-	struct file *fp;
-	struct mount *mp;
-	struct vnode *vp;
-	struct mac mac;
-	char *buffer;
-	int error;
-
-	error = copyin(uap->mac_p, &mac, sizeof(mac));
-	if (error)
-		return (error);
-
-	error = mac_check_structmac_consistent(&mac);
-	if (error)
-		return (error);
-
-	buffer = malloc(mac.m_buflen, M_MACTEMP, M_WAITOK);
-	error = copyinstr(mac.m_string, buffer, mac.m_buflen, NULL);
-	if (error) {
-		free(buffer, M_MACTEMP);
-		return (error);
-	}
-
-	mtx_lock(&Giant);				/* VFS */
-
-	error = fget(td, uap->fd, &fp);
-	if (error)
-		goto out;
-
-	switch (fp->f_type) {
-	case DTYPE_FIFO:
-	case DTYPE_VNODE:
-		mac_init_vnode_label(&intlabel);
-		error = mac_internalize_vnode_label(&intlabel, buffer);
-		if (error) {
-			mac_destroy_vnode_label(&intlabel);
-			break;
-		}
-
-		vp = fp->f_vnode;
-		error = vn_start_write(vp, &mp, V_WAIT | PCATCH);
-		if (error != 0) {
-			mac_destroy_vnode_label(&intlabel);
-			break;
-		}
-
-		vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td);
-		error = vn_setlabel(vp, &intlabel, td->td_ucred);
-		VOP_UNLOCK(vp, 0, td);
-		vn_finished_write(mp);
-
-		mac_destroy_vnode_label(&intlabel);
-		break;
-
-	case DTYPE_PIPE:
-		mac_init_pipe_label(&intlabel);
-		error = mac_internalize_pipe_label(&intlabel, buffer);
-		if (error == 0) {
-			pipe = fp->f_data;
-			PIPE_LOCK(pipe);
-			error = mac_pipe_label_set(td->td_ucred, pipe,
-			    &intlabel);
-			PIPE_UNLOCK(pipe);
-		}
-
-		mac_destroy_pipe_label(&intlabel);
-		break;
-
-	default:
-		error = EINVAL;
-	}
-
-	fdrop(fp, td);
-out:
-	mtx_unlock(&Giant);				/* VFS */
-
-	free(buffer, M_MACTEMP);
-
-	return (error);
-}
-
-/*
- * MPSAFE
- */
-int
-__mac_set_file(struct thread *td, struct __mac_set_file_args *uap)
-{
-	struct label intlabel;
-	struct nameidata nd;
-	struct mount *mp;
-	struct mac mac;
-	char *buffer;
-	int error;
-
-	error = copyin(uap->mac_p, &mac, sizeof(mac));
-	if (error)
-		return (error);
-
-	error = mac_check_structmac_consistent(&mac);
-	if (error)
-		return (error);
-
-	buffer = malloc(mac.m_buflen, M_MACTEMP, M_WAITOK);
-	error = copyinstr(mac.m_string, buffer, mac.m_buflen, NULL);
-	if (error) {
-		free(buffer, M_MACTEMP);
-		return (error);
-	}
-
-	mac_init_vnode_label(&intlabel);
-	error = mac_internalize_vnode_label(&intlabel, buffer);
-	free(buffer, M_MACTEMP);
-	if (error) {
-		mac_destroy_vnode_label(&intlabel);
-		return (error);
-	}
-
-	mtx_lock(&Giant);				/* VFS */
-
-	NDINIT(&nd, LOOKUP, LOCKLEAF | FOLLOW, UIO_USERSPACE, uap->path_p,
-	    td);
-	error = namei(&nd);
-	if (error == 0) {
-		error = vn_start_write(nd.ni_vp, &mp, V_WAIT | PCATCH);
-		if (error == 0)
-			error = vn_setlabel(nd.ni_vp, &intlabel,
-			    td->td_ucred);
-		vn_finished_write(mp);
-	}
-
-	NDFREE(&nd, 0);
-	mtx_unlock(&Giant);				/* VFS */
-	mac_destroy_vnode_label(&intlabel);
-
-	return (error);
-}
-
-/*
- * MPSAFE
- */
-int
-__mac_set_link(struct thread *td, struct __mac_set_link_args *uap)
-{
-	struct label intlabel;
-	struct nameidata nd;
-	struct mount *mp;
-	struct mac mac;
-	char *buffer;
-	int error;
-
-	error = copyin(uap->mac_p, &mac, sizeof(mac));
-	if (error)
-		return (error);
-
-	error = mac_check_structmac_consistent(&mac);
-	if (error)
-		return (error);
-
-	buffer = malloc(mac.m_buflen, M_MACTEMP, M_WAITOK);
-	error = copyinstr(mac.m_string, buffer, mac.m_buflen, NULL);
-	if (error) {
-		free(buffer, M_MACTEMP);
-		return (error);
-	}
-
-	mac_init_vnode_label(&intlabel);
-	error = mac_internalize_vnode_label(&intlabel, buffer);
-	free(buffer, M_MACTEMP);
-	if (error) {
-		mac_destroy_vnode_label(&intlabel);
-		return (error);
-	}
-
-	mtx_lock(&Giant);				/* VFS */
-
-	NDINIT(&nd, LOOKUP, LOCKLEAF | NOFOLLOW, UIO_USERSPACE, uap->path_p,
-	    td);
-	error = namei(&nd);
-	if (error == 0) {
-		error = vn_start_write(nd.ni_vp, &mp, V_WAIT | PCATCH);
-		if (error == 0)
-			error = vn_setlabel(nd.ni_vp, &intlabel,
-			    td->td_ucred);
-		vn_finished_write(mp);
-	}
-
-	NDFREE(&nd, 0);
-	mtx_unlock(&Giant);				/* VFS */
-	mac_destroy_vnode_label(&intlabel);
-
-	return (error);
-}
-
-/*
- * MPSAFE
- */
-int
-mac_syscall(struct thread *td, struct mac_syscall_args *uap)
-{
-	struct mac_policy_conf *mpc;
-	char target[MAC_MAX_POLICY_NAME];
-	int entrycount, error;
-
-	error = copyinstr(uap->policy, target, sizeof(target), NULL);
-	if (error)
-		return (error);
-
-	error = ENOSYS;
-	LIST_FOREACH(mpc, &mac_static_policy_list, mpc_list) {
-		if (strcmp(mpc->mpc_name, target) == 0 &&
-		    mpc->mpc_ops->mpo_syscall != NULL) {
-			error = mpc->mpc_ops->mpo_syscall(td,
-			    uap->call, uap->arg);
-			goto out;
-		}
-	}
-
-	if ((entrycount = mac_policy_list_conditional_busy()) != 0) {
-		LIST_FOREACH(mpc, &mac_policy_list, mpc_list) {
-			if (strcmp(mpc->mpc_name, target) == 0 &&
-			    mpc->mpc_ops->mpo_syscall != NULL) {
-				error = mpc->mpc_ops->mpo_syscall(td,
-				    uap->call, uap->arg);
-				break;
-			}
-		}
-		mac_policy_list_unbusy();
-	}
-out:
-	return (error);
-}
-
-SYSINIT(mac, SI_SUB_MAC, SI_ORDER_FIRST, mac_init, NULL);
-SYSINIT(mac_late, SI_SUB_MAC_LATE, SI_ORDER_FIRST, mac_late_init, NULL);
-
-#else /* !MAC */
-
-int
-__mac_get_pid(struct thread *td, struct __mac_get_pid_args *uap)
-{
-
-	return (ENOSYS);
-}
-
-int
-__mac_get_proc(struct thread *td, struct __mac_get_proc_args *uap)
-{
-
-	return (ENOSYS);
-}
-
-int
-__mac_set_proc(struct thread *td, struct __mac_set_proc_args *uap)
-{
-
-	return (ENOSYS);
-}
-
-int
-__mac_get_fd(struct thread *td, struct __mac_get_fd_args *uap)
-{
-
-	return (ENOSYS);
-}
-
-int
-__mac_get_file(struct thread *td, struct __mac_get_file_args *uap)
-{
-
-	return (ENOSYS);
-}
-
-int
-__mac_get_link(struct thread *td, struct __mac_get_link_args *uap)
-{
-
-	return (ENOSYS);
-}
-
-int
-__mac_set_fd(struct thread *td, struct __mac_set_fd_args *uap)
-{
-
-	return (ENOSYS);
-}
-
-int
-__mac_set_file(struct thread *td, struct __mac_set_file_args *uap)
-{
-
-	return (ENOSYS);
-}
-
-int
-__mac_set_link(struct thread *td, struct __mac_set_link_args *uap)
-{
-
-	return (ENOSYS);
-}
-
-int
-mac_syscall(struct thread *td, struct mac_syscall_args *uap)
-{
-
-	return (ENOSYS);
-}
-
-#endif