Following a repo-copy of vfs_syscalls.c to vfs_extattr.c, remove

non-extattr functions from vfs_extattr.c, and extattr functions from
vfs_syscalls.c.

Change copyright/license on vfs_extattr.c to my copyright/license on
the extended attribute implementation (from extattr.h).

Clean up includes a bit.

Obtained from:	TrustedBSD Project

1 files changed, 7 insertions, 4314 deletions

diff --git a/sys/kern/vfs_extattr.c b/sys/kern/vfs_extattr.c
index bb51d01..628abd9 100644
--- a/sys/kern/vfs_extattr.c
+++ b/sys/kern/vfs_extattr.c
@@ -1,11 +1,8 @@
 /*-
- * Copyright (c) 1989, 1993
- *	The Regents of the University of California.  All rights reserved.
- * (c) UNIX System Laboratories, Inc.
- * All or some portions of this file are derived from material licensed
- * to the University of California by American Telephone and Telegraph
- * Co. or Unix System Laboratories, Inc. and are reproduced herein with
- * the permission of UNIX System Laboratories, Inc.
+ * Copyright (c) 1999-2001 Robert N. M. Watson
+ * All rights reserved.
+ *
+ * This software was developed by Robert Watson for the TrustedBSD Project.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -15,14 +12,11 @@
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
- * 4. Neither the name of the University nor the names of its contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
  *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
@@ -30,4330 +24,29 @@
  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
- *
- *	@(#)vfs_syscalls.c	8.13 (Berkeley) 4/15/94
  */
 
 #include <sys/cdefs.h>
 __FBSDID("$FreeBSD$");
 
-#include "opt_compat.h"
 #include "opt_mac.h"
 
 #include <sys/param.h>
 #include <sys/systm.h>
-#include <sys/bio.h>
-#include <sys/buf.h>
-#include <sys/sysent.h>
-#include <sys/malloc.h>
+#include <sys/lock.h>
 #include <sys/mount.h>
 #include <sys/mutex.h>
 #include <sys/sysproto.h>
 #include <sys/namei.h>
 #include <sys/filedesc.h>
-#include <sys/kernel.h>
-#include <sys/fcntl.h>
-#include <sys/file.h>
 #include <sys/limits.h>
-#include <sys/linker.h>
-#include <sys/stat.h>
-#include <sys/sx.h>
-#include <sys/unistd.h>
 #include <sys/vnode.h>
-#include <sys/priv.h>
 #include <sys/proc.h>
-#include <sys/dirent.h>
 #include <sys/extattr.h>
-#include <sys/jail.h>
-#include <sys/syscallsubr.h>
-#include <sys/sysctl.h>
-
-#include <machine/stdarg.h>
 
 #include <security/audit/audit.h>
 #include <security/mac/mac_framework.h>
 
-#include <vm/vm.h>
-#include <vm/vm_object.h>
-#include <vm/vm_page.h>
-#include <vm/uma.h>
-
-static int chroot_refuse_vdir_fds(struct filedesc *fdp);
-static int getutimes(const struct timeval *, enum uio_seg, struct timespec *);
-static int setfown(struct thread *td, struct vnode *, uid_t, gid_t);
-static int setfmode(struct thread *td, struct vnode *, int);
-static int setfflags(struct thread *td, struct vnode *, int);
-static int setutimes(struct thread *td, struct vnode *,
-    const struct timespec *, int, int);
-static int vn_access(struct vnode *vp, int user_flags, struct ucred *cred,
-    struct thread *td);
-
-static int extattr_list_vp(struct vnode *vp, int attrnamespace, void *data,
-    size_t nbytes, struct thread *td);
-
-int (*union_dircheckp)(struct thread *td, struct vnode **, struct file *);
-
-/*
- * The module initialization routine for POSIX asynchronous I/O will
- * set this to the version of AIO that it implements.  (Zero means
- * that it is not implemented.)  This value is used here by pathconf()
- * and in kern_descrip.c by fpathconf().
- */
-int async_io_version;
-
-/*
- * Sync each mounted filesystem.
- */
-#ifndef _SYS_SYSPROTO_H_
-struct sync_args {
-	int     dummy;
-};
-#endif
-
-#ifdef DEBUG
-static int syncprt = 0;
-SYSCTL_INT(_debug, OID_AUTO, syncprt, CTLFLAG_RW, &syncprt, 0, "");
-#endif
-
-/* ARGSUSED */
-int
-sync(td, uap)
-	struct thread *td;
-	struct sync_args *uap;
-{
-	struct mount *mp, *nmp;
-	int vfslocked;
-
-	mtx_lock(&mountlist_mtx);
-	for (mp = TAILQ_FIRST(&mountlist); mp != NULL; mp = nmp) {
-		if (vfs_busy(mp, LK_NOWAIT, &mountlist_mtx, td)) {
-			nmp = TAILQ_NEXT(mp, mnt_list);
-			continue;
-		}
-		vfslocked = VFS_LOCK_GIANT(mp);
-		if ((mp->mnt_flag & MNT_RDONLY) == 0 &&
-		    vn_start_write(NULL, &mp, V_NOWAIT) == 0) {
-			MNT_ILOCK(mp);
-			mp->mnt_noasync++;
-			mp->mnt_kern_flag &= ~MNTK_ASYNC;
-			MNT_IUNLOCK(mp);
-			vfs_msync(mp, MNT_NOWAIT);
-			VFS_SYNC(mp, MNT_NOWAIT, td);
-			MNT_ILOCK(mp);
-			mp->mnt_noasync--;
-			if ((mp->mnt_flag & MNT_ASYNC) != 0 &&
-			    mp->mnt_noasync == 0)
-				mp->mnt_kern_flag |= MNTK_ASYNC;
-			MNT_IUNLOCK(mp);
-			vn_finished_write(mp);
-		}
-		VFS_UNLOCK_GIANT(vfslocked);
-		mtx_lock(&mountlist_mtx);
-		nmp = TAILQ_NEXT(mp, mnt_list);
-		vfs_unbusy(mp, td);
-	}
-	mtx_unlock(&mountlist_mtx);
-	return (0);
-}
-
-/* XXX PRISON: could be per prison flag */
-static int prison_quotas;
-#if 0
-SYSCTL_INT(_kern_prison, OID_AUTO, quotas, CTLFLAG_RW, &prison_quotas, 0, "");
-#endif
-
-/*
- * Change filesystem quotas.
- *
- * MP SAFE
- */
-#ifndef _SYS_SYSPROTO_H_
-struct quotactl_args {
-	char *path;
-	int cmd;
-	int uid;
-	caddr_t arg;
-};
-#endif
-int
-quotactl(td, uap)
-	struct thread *td;
-	register struct quotactl_args /* {
-		char *path;
-		int cmd;
-		int uid;
-		caddr_t arg;
-	} */ *uap;
-{
-	struct mount *mp, *vmp;
-	int vfslocked;
-	int error;
-	struct nameidata nd;
-
-	AUDIT_ARG(cmd, uap->cmd);
-	AUDIT_ARG(uid, uap->uid);
-	if (jailed(td->td_ucred) && !prison_quotas)
-		return (EPERM);
-	NDINIT(&nd, LOOKUP, FOLLOW | MPSAFE | AUDITVNODE1,
-	   UIO_USERSPACE, uap->path, td);
-	if ((error = namei(&nd)) != 0)
-		return (error);
-	vfslocked = NDHASGIANT(&nd);
-	NDFREE(&nd, NDF_ONLY_PNBUF);
-	error = vn_start_write(nd.ni_vp, &vmp, V_WAIT | PCATCH);
-	mp = nd.ni_vp->v_mount;
-	vrele(nd.ni_vp);
-	if (error)
-		goto out;
-	error = VFS_QUOTACTL(mp, uap->cmd, uap->uid, uap->arg, td);
-	vn_finished_write(vmp);
-out:
-	VFS_UNLOCK_GIANT(vfslocked);
-	return (error);
-}
-
-/*
- * Get filesystem statistics.
- */
-#ifndef _SYS_SYSPROTO_H_
-struct statfs_args {
-	char *path;
-	struct statfs *buf;
-};
-#endif
-int
-statfs(td, uap)
-	struct thread *td;
-	register struct statfs_args /* {
-		char *path;
-		struct statfs *buf;
-	} */ *uap;
-{
-	struct statfs sf;
-	int error;
-
-	error = kern_statfs(td, uap->path, UIO_USERSPACE, &sf);
-	if (error == 0)
-		error = copyout(&sf, uap->buf, sizeof(sf));
-	return (error);
-}
-
-int
-kern_statfs(struct thread *td, char *path, enum uio_seg pathseg,
-    struct statfs *buf)
-{
-	struct mount *mp;
-	struct statfs *sp, sb;
-	int vfslocked;
-	int error;
-	struct nameidata nd;
-
-	NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF | MPSAFE | AUDITVNODE1,
-	    pathseg, path, td);
-	error = namei(&nd);
-	if (error)
-		return (error);
-	vfslocked = NDHASGIANT(&nd);
-	mp = nd.ni_vp->v_mount;
-	vfs_ref(mp);
-	NDFREE(&nd, NDF_ONLY_PNBUF);
-	vput(nd.ni_vp);
-#ifdef MAC
-	error = mac_check_mount_stat(td->td_ucred, mp);
-	if (error)
-		goto out;
-#endif
-	/*
-	 * Set these in case the underlying filesystem fails to do so.
-	 */
-	sp = &mp->mnt_stat;
-	sp->f_version = STATFS_VERSION;
-	sp->f_namemax = NAME_MAX;
-	sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK;
-	error = VFS_STATFS(mp, sp, td);
-	if (error)
-		goto out;
-	if (priv_check(td, PRIV_VFS_GENERATION)) {
-		bcopy(sp, &sb, sizeof(sb));
-		sb.f_fsid.val[0] = sb.f_fsid.val[1] = 0;
-		prison_enforce_statfs(td->td_ucred, mp, &sb);
-		sp = &sb;
-	}
-	*buf = *sp;
-out:
-	vfs_rel(mp);
-	VFS_UNLOCK_GIANT(vfslocked);
-	if (mtx_owned(&Giant))
-		printf("statfs(%d): %s: %d\n", vfslocked, path, error);
-	return (error);
-}
-
-/*
- * Get filesystem statistics.
- */
-#ifndef _SYS_SYSPROTO_H_
-struct fstatfs_args {
-	int fd;
-	struct statfs *buf;
-};
-#endif
-int
-fstatfs(td, uap)
-	struct thread *td;
-	register struct fstatfs_args /* {
-		int fd;
-		struct statfs *buf;
-	} */ *uap;
-{
-	struct statfs sf;
-	int error;
-
-	error = kern_fstatfs(td, uap->fd, &sf);
-	if (error == 0)
-		error = copyout(&sf, uap->buf, sizeof(sf));
-	return (error);
-}
-
-int
-kern_fstatfs(struct thread *td, int fd, struct statfs *buf)
-{
-	struct file *fp;
-	struct mount *mp;
-	struct statfs *sp, sb;
-	int vfslocked;
-	struct vnode *vp;
-	int error;
-
-	AUDIT_ARG(fd, fd);
-	error = getvnode(td->td_proc->p_fd, fd, &fp);
-	if (error)
-		return (error);
-	vp = fp->f_vnode;
-	vfslocked = VFS_LOCK_GIANT(vp->v_mount);
-	vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td);
-#ifdef AUDIT
-	AUDIT_ARG(vnode, vp, ARG_VNODE1);
-#endif
-	mp = vp->v_mount;
-	if (mp)
-		vfs_ref(mp);
-	VOP_UNLOCK(vp, 0, td);
-	fdrop(fp, td);
-	if (vp->v_iflag & VI_DOOMED) {
-		error = EBADF;
-		goto out;
-	}
-#ifdef MAC
-	error = mac_check_mount_stat(td->td_ucred, mp);
-	if (error)
-		goto out;
-#endif
-	/*
-	 * Set these in case the underlying filesystem fails to do so.
-	 */
-	sp = &mp->mnt_stat;
-	sp->f_version = STATFS_VERSION;
-	sp->f_namemax = NAME_MAX;
-	sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK;
-	error = VFS_STATFS(mp, sp, td);
-	if (error)
-		goto out;
-	if (priv_check(td, PRIV_VFS_GENERATION)) {
-		bcopy(sp, &sb, sizeof(sb));
-		sb.f_fsid.val[0] = sb.f_fsid.val[1] = 0;
-		prison_enforce_statfs(td->td_ucred, mp, &sb);
-		sp = &sb;
-	}
-	*buf = *sp;
-out:
-	if (mp)
-		vfs_rel(mp);
-	VFS_UNLOCK_GIANT(vfslocked);
-	return (error);
-}
-
-/*
- * Get statistics on all filesystems.
- */
-#ifndef _SYS_SYSPROTO_H_
-struct getfsstat_args {
-	struct statfs *buf;
-	long bufsize;
-	int flags;
-};
-#endif
-int
-getfsstat(td, uap)
-	struct thread *td;
-	register struct getfsstat_args /* {
-		struct statfs *buf;
-		long bufsize;
-		int flags;
-	} */ *uap;
-{
-
-	return (kern_getfsstat(td, &uap->buf, uap->bufsize, UIO_USERSPACE,
-	    uap->flags));
-}
-
-/*
- * If (bufsize > 0 && bufseg == UIO_SYSSPACE)
- * 	The caller is responsible for freeing memory which will be allocated
- *	in '*buf'.
- */
-int
-kern_getfsstat(struct thread *td, struct statfs **buf, size_t bufsize,
-    enum uio_seg bufseg, int flags)
-{
-	struct mount *mp, *nmp;
-	struct statfs *sfsp, *sp, sb;
-	size_t count, maxcount;
-	int vfslocked;
-	int error;
-
-	maxcount = bufsize / sizeof(struct statfs);
-	if (bufsize == 0)
-		sfsp = NULL;
-	else if (bufseg == UIO_USERSPACE)
-		sfsp = *buf;
-	else /* if (bufseg == UIO_SYSSPACE) */ {
-		count = 0;
-		mtx_lock(&mountlist_mtx);
-		TAILQ_FOREACH(mp, &mountlist, mnt_list) {
-			count++;
-		}
-		mtx_unlock(&mountlist_mtx);
-		if (maxcount > count)
-			maxcount = count;
-		sfsp = *buf = malloc(maxcount * sizeof(struct statfs), M_TEMP,
-		    M_WAITOK);
-	}
-	count = 0;
-	mtx_lock(&mountlist_mtx);
-	for (mp = TAILQ_FIRST(&mountlist); mp != NULL; mp = nmp) {
-		if (prison_canseemount(td->td_ucred, mp) != 0) {
-			nmp = TAILQ_NEXT(mp, mnt_list);
-			continue;
-		}
-#ifdef MAC
-		if (mac_check_mount_stat(td->td_ucred, mp) != 0) {
-			nmp = TAILQ_NEXT(mp, mnt_list);
-			continue;
-		}
-#endif
-		if (vfs_busy(mp, LK_NOWAIT, &mountlist_mtx, td)) {
-			nmp = TAILQ_NEXT(mp, mnt_list);
-			continue;
-		}
-		vfslocked = VFS_LOCK_GIANT(mp);
-		if (sfsp && count < maxcount) {
-			sp = &mp->mnt_stat;
-			/*
-			 * Set these in case the underlying filesystem
-			 * fails to do so.
-			 */
-			sp->f_version = STATFS_VERSION;
-			sp->f_namemax = NAME_MAX;
-			sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK;
-			/*
-			 * If MNT_NOWAIT or MNT_LAZY is specified, do not
-			 * refresh the fsstat cache. MNT_NOWAIT or MNT_LAZY
-			 * overrides MNT_WAIT.
-			 */
-			if (((flags & (MNT_LAZY|MNT_NOWAIT)) == 0 ||
-			    (flags & MNT_WAIT)) &&
-			    (error = VFS_STATFS(mp, sp, td))) {
-				VFS_UNLOCK_GIANT(vfslocked);
-				mtx_lock(&mountlist_mtx);
-				nmp = TAILQ_NEXT(mp, mnt_list);
-				vfs_unbusy(mp, td);
-				continue;
-			}
-			if (priv_check(td, PRIV_VFS_GENERATION)) {
-				bcopy(sp, &sb, sizeof(sb));
-				sb.f_fsid.val[0] = sb.f_fsid.val[1] = 0;
-				prison_enforce_statfs(td->td_ucred, mp, &sb);
-				sp = &sb;
-			}
-			if (bufseg == UIO_SYSSPACE)
-				bcopy(sp, sfsp, sizeof(*sp));
-			else /* if (bufseg == UIO_USERSPACE) */ {
-				error = copyout(sp, sfsp, sizeof(*sp));
-				if (error) {
-					vfs_unbusy(mp, td);
-					VFS_UNLOCK_GIANT(vfslocked);
-					return (error);
-				}
-			}
-			sfsp++;
-		}
-		VFS_UNLOCK_GIANT(vfslocked);
-		count++;
-		mtx_lock(&mountlist_mtx);
-		nmp = TAILQ_NEXT(mp, mnt_list);
-		vfs_unbusy(mp, td);
-	}
-	mtx_unlock(&mountlist_mtx);
-	if (sfsp && count > maxcount)
-		td->td_retval[0] = maxcount;
-	else
-		td->td_retval[0] = count;
-	return (0);
-}
-
-#ifdef COMPAT_FREEBSD4
-/*
- * Get old format filesystem statistics.
- */
-static void cvtstatfs(struct statfs *, struct ostatfs *);
-
-#ifndef _SYS_SYSPROTO_H_
-struct freebsd4_statfs_args {
-	char *path;
-	struct ostatfs *buf;
-};
-#endif
-int
-freebsd4_statfs(td, uap)
-	struct thread *td;
-	struct freebsd4_statfs_args /* {
-		char *path;
-		struct ostatfs *buf;
-	} */ *uap;
-{
-	struct ostatfs osb;
-	struct statfs sf;
-	int error;
-
-	error = kern_statfs(td, uap->path, UIO_USERSPACE, &sf);
-	if (error)
-		return (error);
-	cvtstatfs(&sf, &osb);
-	return (copyout(&osb, uap->buf, sizeof(osb)));
-}
-
-/*
- * Get filesystem statistics.
- */
-#ifndef _SYS_SYSPROTO_H_
-struct freebsd4_fstatfs_args {
-	int fd;
-	struct ostatfs *buf;
-};
-#endif
-int
-freebsd4_fstatfs(td, uap)
-	struct thread *td;
-	struct freebsd4_fstatfs_args /* {
-		int fd;
-		struct ostatfs *buf;
-	} */ *uap;
-{
-	struct ostatfs osb;
-	struct statfs sf;
-	int error;
-
-	error = kern_fstatfs(td, uap->fd, &sf);
-	if (error)
-		return (error);
-	cvtstatfs(&sf, &osb);
-	return (copyout(&osb, uap->buf, sizeof(osb)));
-}
-
-/*
- * Get statistics on all filesystems.
- */
-#ifndef _SYS_SYSPROTO_H_
-struct freebsd4_getfsstat_args {
-	struct ostatfs *buf;
-	long bufsize;
-	int flags;
-};
-#endif
-int
-freebsd4_getfsstat(td, uap)
-	struct thread *td;
-	register struct freebsd4_getfsstat_args /* {
-		struct ostatfs *buf;
-		long bufsize;
-		int flags;
-	} */ *uap;
-{
-	struct statfs *buf, *sp;
-	struct ostatfs osb;
-	size_t count, size;
-	int error;
-
-	count = uap->bufsize / sizeof(struct ostatfs);
-	size = count * sizeof(struct statfs);
-	error = kern_getfsstat(td, &buf, size, UIO_SYSSPACE, uap->flags);
-	if (size > 0) {
-		count = td->td_retval[0];
-		sp = buf;
-		while (count > 0 && error == 0) {
-			cvtstatfs(sp, &osb);
-			error = copyout(&osb, uap->buf, sizeof(osb));
-			sp++;
-			uap->buf++;
-			count--;
-		}
-		free(buf, M_TEMP);
-	}
-	return (error);
-}
-
-/*
- * Implement fstatfs() for (NFS) file handles.
- */
-#ifndef _SYS_SYSPROTO_H_
-struct freebsd4_fhstatfs_args {
-	struct fhandle *u_fhp;
-	struct ostatfs *buf;
-};
-#endif
-int
-freebsd4_fhstatfs(td, uap)
-	struct thread *td;
-	struct freebsd4_fhstatfs_args /* {
-		struct fhandle *u_fhp;
-		struct ostatfs *buf;
-	} */ *uap;
-{
-	struct ostatfs osb;
-	struct statfs sf;
-	fhandle_t fh;
-	int error;
-
-	error = copyin(uap->u_fhp, &fh, sizeof(fhandle_t));
-	if (error)
-		return (error);
-	error = kern_fhstatfs(td, fh, &sf);
-	if (error)
-		return (error);
-	cvtstatfs(&sf, &osb);
-	return (copyout(&osb, uap->buf, sizeof(osb)));
-}
-
-/*
- * Convert a new format statfs structure to an old format statfs structure.
- */
-static void
-cvtstatfs(nsp, osp)
-	struct statfs *nsp;
-	struct ostatfs *osp;
-{
-
-	bzero(osp, sizeof(*osp));
-	osp->f_bsize = MIN(nsp->f_bsize, LONG_MAX);
-	osp->f_iosize = MIN(nsp->f_iosize, LONG_MAX);
-	osp->f_blocks = MIN(nsp->f_blocks, LONG_MAX);
-	osp->f_bfree = MIN(nsp->f_bfree, LONG_MAX);
-	osp->f_bavail = MIN(nsp->f_bavail, LONG_MAX);
-	osp->f_files = MIN(nsp->f_files, LONG_MAX);
-	osp->f_ffree = MIN(nsp->f_ffree, LONG_MAX);
-	osp->f_owner = nsp->f_owner;
-	osp->f_type = nsp->f_type;
-	osp->f_flags = nsp->f_flags;
-	osp->f_syncwrites = MIN(nsp->f_syncwrites, LONG_MAX);
-	osp->f_asyncwrites = MIN(nsp->f_asyncwrites, LONG_MAX);
-	osp->f_syncreads = MIN(nsp->f_syncreads, LONG_MAX);
-	osp->f_asyncreads = MIN(nsp->f_asyncreads, LONG_MAX);
-	strlcpy(osp->f_fstypename, nsp->f_fstypename,
-	    MIN(MFSNAMELEN, OMFSNAMELEN));
-	strlcpy(osp->f_mntonname, nsp->f_mntonname,
-	    MIN(MNAMELEN, OMNAMELEN));
-	strlcpy(osp->f_mntfromname, nsp->f_mntfromname,
-	    MIN(MNAMELEN, OMNAMELEN));
-	osp->f_fsid = nsp->f_fsid;
-}
-#endif /* COMPAT_FREEBSD4 */
-
-/*
- * Change current working directory to a given file descriptor.
- */
-#ifndef _SYS_SYSPROTO_H_
-struct fchdir_args {
-	int	fd;
-};
-#endif
-int
-fchdir(td, uap)
-	struct thread *td;
-	struct fchdir_args /* {
-		int fd;
-	} */ *uap;
-{
-	register struct filedesc *fdp = td->td_proc->p_fd;
-	struct vnode *vp, *tdp, *vpold;
-	struct mount *mp;
-	struct file *fp;
-	int vfslocked;
-	int error;
-
-	AUDIT_ARG(fd, uap->fd);
-	if ((error = getvnode(fdp, uap->fd, &fp)) != 0)
-		return (error);
-	vp = fp->f_vnode;
-	VREF(vp);
-	fdrop(fp, td);
-	vfslocked = VFS_LOCK_GIANT(vp->v_mount);
-	vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td);
-	AUDIT_ARG(vnode, vp, ARG_VNODE1);
-	error = change_dir(vp, td);
-	while (!error && (mp = vp->v_mountedhere) != NULL) {
-		int tvfslocked;
-		if (vfs_busy(mp, 0, 0, td))
-			continue;
-		tvfslocked = VFS_LOCK_GIANT(mp);
-		error = VFS_ROOT(mp, LK_EXCLUSIVE, &tdp, td);
-		vfs_unbusy(mp, td);
-		if (error) {
-			VFS_UNLOCK_GIANT(tvfslocked);
-			break;
-		}
-		vput(vp);
-		VFS_UNLOCK_GIANT(vfslocked);
-		vp = tdp;
-		vfslocked = tvfslocked;
-	}
-	if (error) {
-		vput(vp);
-		VFS_UNLOCK_GIANT(vfslocked);
-		return (error);
-	}
-	VOP_UNLOCK(vp, 0, td);
-	VFS_UNLOCK_GIANT(vfslocked);
-	FILEDESC_LOCK_FAST(fdp);
-	vpold = fdp->fd_cdir;
-	fdp->fd_cdir = vp;
-	FILEDESC_UNLOCK_FAST(fdp);
-	vfslocked = VFS_LOCK_GIANT(vpold->v_mount);
-	vrele(vpold);
-	VFS_UNLOCK_GIANT(vfslocked);
-	return (0);
-}
-
-/*
- * Change current working directory (``.'').
- */
-#ifndef _SYS_SYSPROTO_H_
-struct chdir_args {
-	char	*path;
-};
-#endif
-int
-chdir(td, uap)
-	struct thread *td;
-	struct chdir_args /* {
-		char *path;
-	} */ *uap;
-{
-
-	return (kern_chdir(td, uap->path, UIO_USERSPACE));
-}
-
-int
-kern_chdir(struct thread *td, char *path, enum uio_seg pathseg)
-{
-	register struct filedesc *fdp = td->td_proc->p_fd;
-	int error;
-	struct nameidata nd;
-	struct vnode *vp;
-	int vfslocked;
-
-	NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF | AUDITVNODE1 | MPSAFE,
-	    pathseg, path, td);
-	if ((error = namei(&nd)) != 0)
-		return (error);
-	vfslocked = NDHASGIANT(&nd);
-	if ((error = change_dir(nd.ni_vp, td)) != 0) {
-		vput(nd.ni_vp);
-		VFS_UNLOCK_GIANT(vfslocked);
-		NDFREE(&nd, NDF_ONLY_PNBUF);
-		return (error);
-	}
-	VOP_UNLOCK(nd.ni_vp, 0, td);
-	VFS_UNLOCK_GIANT(vfslocked);
-	NDFREE(&nd, NDF_ONLY_PNBUF);
-	FILEDESC_LOCK_FAST(fdp);
-	vp = fdp->fd_cdir;
-	fdp->fd_cdir = nd.ni_vp;
-	FILEDESC_UNLOCK_FAST(fdp);
-	vfslocked = VFS_LOCK_GIANT(vp->v_mount);
-	vrele(vp);
-	VFS_UNLOCK_GIANT(vfslocked);
-	return (0);
-}
-
-/*
- * Helper function for raised chroot(2) security function:  Refuse if
- * any filedescriptors are open directories.
- */
-static int
-chroot_refuse_vdir_fds(fdp)
-	struct filedesc *fdp;
-{
-	struct vnode *vp;
-	struct file *fp;
-	int fd;
-
-	FILEDESC_LOCK_ASSERT(fdp, MA_OWNED);
-	for (fd = 0; fd < fdp->fd_nfiles ; fd++) {
-		fp = fget_locked(fdp, fd);
-		if (fp == NULL)
-			continue;
-		if (fp->f_type == DTYPE_VNODE) {
-			vp = fp->f_vnode;
-			if (vp->v_type == VDIR)
-				return (EPERM);
-		}
-	}
-	return (0);
-}
-
-/*
- * This sysctl determines if we will allow a process to chroot(2) if it
- * has a directory open:
- *	0: disallowed for all processes.
- *	1: allowed for processes that were not already chroot(2)'ed.
- *	2: allowed for all processes.
- */
-
-static int chroot_allow_open_directories = 1;
-
-SYSCTL_INT(_kern, OID_AUTO, chroot_allow_open_directories, CTLFLAG_RW,
-     &chroot_allow_open_directories, 0, "");
-
-/*
- * Change notion of root (``/'') directory.
- */
-#ifndef _SYS_SYSPROTO_H_
-struct chroot_args {
-	char	*path;
-};
-#endif
-int
-chroot(td, uap)
-	struct thread *td;
-	struct chroot_args /* {
-		char *path;
-	} */ *uap;
-{
-	int error;
-	struct nameidata nd;
-	int vfslocked;
-
-	error = priv_check_cred(td->td_ucred, PRIV_VFS_CHROOT,
-	    SUSER_ALLOWJAIL);
-	if (error)
-		return (error);
-	NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF | MPSAFE | AUDITVNODE1,
-	    UIO_USERSPACE, uap->path, td);
-	error = namei(&nd);
-	if (error)
-		goto error;
-	vfslocked = NDHASGIANT(&nd);
-	if ((error = change_dir(nd.ni_vp, td)) != 0)
-		goto e_vunlock;
-#ifdef MAC
-	if ((error = mac_check_vnode_chroot(td->td_ucred, nd.ni_vp)))
-		goto e_vunlock;
-#endif
-	VOP_UNLOCK(nd.ni_vp, 0, td);
-	error = change_root(nd.ni_vp, td);
-	vrele(nd.ni_vp);
-	VFS_UNLOCK_GIANT(vfslocked);
-	NDFREE(&nd, NDF_ONLY_PNBUF);
-	return (error);
-e_vunlock:
-	vput(nd.ni_vp);
-	VFS_UNLOCK_GIANT(vfslocked);
-error:
-	NDFREE(&nd, NDF_ONLY_PNBUF);
-	return (error);
-}
-
-/*
- * Common routine for chroot and chdir.  Callers must provide a locked vnode
- * instance.
- */
-int
-change_dir(vp, td)
-	struct vnode *vp;
-	struct thread *td;
-{
-	int error;
-
-	ASSERT_VOP_LOCKED(vp, "change_dir(): vp not locked");
-	if (vp->v_type != VDIR)
-		return (ENOTDIR);
-#ifdef MAC
-	error = mac_check_vnode_chdir(td->td_ucred, vp);
-	if (error)
-		return (error);
-#endif
-	error = VOP_ACCESS(vp, VEXEC, td->td_ucred, td);
-	return (error);
-}
-
-/*
- * Common routine for kern_chroot() and jail_attach().  The caller is
- * responsible for invoking priv_check() and mac_check_chroot() to authorize
- * this operation.
- */
-int
-change_root(vp, td)
-	struct vnode *vp;
-	struct thread *td;
-{
-	struct filedesc *fdp;
-	struct vnode *oldvp;
-	int vfslocked;
-	int error;
-
-	VFS_ASSERT_GIANT(vp->v_mount);
-	fdp = td->td_proc->p_fd;
-	FILEDESC_LOCK(fdp);
-	if (chroot_allow_open_directories == 0 ||
-	    (chroot_allow_open_directories == 1 && fdp->fd_rdir != rootvnode)) {
-		error = chroot_refuse_vdir_fds(fdp);
-		if (error) {
-			FILEDESC_UNLOCK(fdp);
-			return (error);
-		}
-	}
-	oldvp = fdp->fd_rdir;
-	fdp->fd_rdir = vp;
-	VREF(fdp->fd_rdir);
-	if (!fdp->fd_jdir) {
-		fdp->fd_jdir = vp;
-		VREF(fdp->fd_jdir);
-	}
-	FILEDESC_UNLOCK(fdp);
-	vfslocked = VFS_LOCK_GIANT(oldvp->v_mount);
-	vrele(oldvp);
-	VFS_UNLOCK_GIANT(vfslocked);
-	return (0);
-}
-
-/*
- * Check permissions, allocate an open file structure,
- * and call the device open routine if any.
- *
- * MP SAFE
- */
-#ifndef _SYS_SYSPROTO_H_
-struct open_args {
-	char	*path;
-	int	flags;
-	int	mode;
-};
-#endif
-int
-open(td, uap)
-	struct thread *td;
-	register struct open_args /* {
-		char *path;
-		int flags;
-		int mode;
-	} */ *uap;
-{
-
-	return kern_open(td, uap->path, UIO_USERSPACE, uap->flags, uap->mode);
-}
-
-int
-kern_open(struct thread *td, char *path, enum uio_seg pathseg, int flags,
-    int mode)
-{
-	struct proc *p = td->td_proc;
-	struct filedesc *fdp = p->p_fd;
-	struct file *fp;
-	struct vnode *vp;
-	struct vattr vat;
-	struct mount *mp;
-	int cmode;
-	struct file *nfp;
-	int type, indx, error;
-	struct flock lf;
-	struct nameidata nd;
-	int vfslocked;
-
-	AUDIT_ARG(fflags, flags);
-	AUDIT_ARG(mode, mode);
-	if ((flags & O_ACCMODE) == O_ACCMODE)
-		return (EINVAL);
-	flags = FFLAGS(flags);
-	error = falloc(td, &nfp, &indx);
-	if (error)
-		return (error);
-	/* An extra reference on `nfp' has been held for us by falloc(). */
-	fp = nfp;
-	cmode = ((mode &~ fdp->fd_cmask) & ALLPERMS) &~ S_ISTXT;
-	NDINIT(&nd, LOOKUP, FOLLOW | AUDITVNODE1 | MPSAFE, pathseg, path, td);
-	td->td_dupfd = -1;		/* XXX check for fdopen */
-	error = vn_open(&nd, &flags, cmode, indx);
-	if (error) {
-		/*
-		 * If the vn_open replaced the method vector, something
-		 * wonderous happened deep below and we just pass it up
-		 * pretending we know what we do.
-		 */
-		if (error == ENXIO && fp->f_ops != &badfileops) {
-			fdrop(fp, td);
-			td->td_retval[0] = indx;
-			return (0);
-		}
-
-		/*
-		 * release our own reference
-		 */
-		fdrop(fp, td);
-
-		/*
-		 * handle special fdopen() case.  bleh.  dupfdopen() is
-		 * responsible for dropping the old contents of ofiles[indx]
-		 * if it succeeds.
-		 */
-		if ((error == ENODEV || error == ENXIO) &&
-		    td->td_dupfd >= 0 &&		/* XXX from fdopen */
-		    (error =
-			dupfdopen(td, fdp, indx, td->td_dupfd, flags, error)) == 0) {
-			td->td_retval[0] = indx;
-			return (0);
-		}
-		/*
-		 * Clean up the descriptor, but only if another thread hadn't
-		 * replaced or closed it.
-		 */
-		fdclose(fdp, fp, indx, td);
-
-		if (error == ERESTART)
-			error = EINTR;
-		return (error);
-	}
-	td->td_dupfd = 0;
-	vfslocked = NDHASGIANT(&nd);
-	NDFREE(&nd, NDF_ONLY_PNBUF);
-	vp = nd.ni_vp;
-
-	/*
-	 * There should be 2 references on the file, one from the descriptor
-	 * table, and one for us.
-	 *
-	 * Handle the case where someone closed the file (via its file
-	 * descriptor) while we were blocked.  The end result should look
-	 * like opening the file succeeded but it was immediately closed.
-	 * We call vn_close() manually because we haven't yet hooked up
-	 * the various 'struct file' fields.
-	 */
-	FILEDESC_LOCK(fdp);
-	FILE_LOCK(fp);
-	if (fp->f_count == 1) {
-		mp = vp->v_mount;
-		KASSERT(fdp->fd_ofiles[indx] != fp,
-		    ("Open file descriptor lost all refs"));
-		FILE_UNLOCK(fp);
-		FILEDESC_UNLOCK(fdp);
-		VOP_UNLOCK(vp, 0, td);
-		vn_close(vp, flags & FMASK, fp->f_cred, td);
-		VFS_UNLOCK_GIANT(vfslocked);
-		fdrop(fp, td);
-		td->td_retval[0] = indx;
-		return (0);
-	}
-	fp->f_vnode = vp;
-	if (fp->f_data == NULL)
-		fp->f_data = vp;
-	fp->f_flag = flags & FMASK;
-	if (fp->f_ops == &badfileops)
-		fp->f_ops = &vnops;
-	fp->f_seqcount = 1;
-	fp->f_type = (vp->v_type == VFIFO ? DTYPE_FIFO : DTYPE_VNODE);
-	FILE_UNLOCK(fp);
-	FILEDESC_UNLOCK(fdp);
-
-	VOP_UNLOCK(vp, 0, td);
-	if (flags & (O_EXLOCK | O_SHLOCK)) {
-		lf.l_whence = SEEK_SET;
-		lf.l_start = 0;
-		lf.l_len = 0;
-		if (flags & O_EXLOCK)
-			lf.l_type = F_WRLCK;
-		else
-			lf.l_type = F_RDLCK;
-		type = F_FLOCK;
-		if ((flags & FNONBLOCK) == 0)
-			type |= F_WAIT;
-		if ((error = VOP_ADVLOCK(vp, (caddr_t)fp, F_SETLK, &lf,
-			    type)) != 0)
-			goto bad;
-		fp->f_flag |= FHASLOCK;
-	}
-	if (flags & O_TRUNC) {
-		if ((error = vn_start_write(vp, &mp, V_WAIT | PCATCH)) != 0)
-			goto bad;
-		VOP_LEASE(vp, td, td->td_ucred, LEASE_WRITE);
-		VATTR_NULL(&vat);
-		vat.va_size = 0;
-		vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td);
-#ifdef MAC
-		error = mac_check_vnode_write(td->td_ucred, fp->f_cred, vp);
-		if (error == 0)
-#endif
-			error = VOP_SETATTR(vp, &vat, td->td_ucred, td);
-		VOP_UNLOCK(vp, 0, td);
-		vn_finished_write(mp);
-		if (error)
-			goto bad;
-	}
-	VFS_UNLOCK_GIANT(vfslocked);
-	/*
-	 * Release our private reference, leaving the one associated with
-	 * the descriptor table intact.
-	 */
-	fdrop(fp, td);
-	td->td_retval[0] = indx;
-	return (0);
-bad:
-	VFS_UNLOCK_GIANT(vfslocked);
-	fdclose(fdp, fp, indx, td);
-	fdrop(fp, td);
-	return (error);
-}
-
-#ifdef COMPAT_43
-/*
- * Create a file.
- *
- * MP SAFE
- */
-#ifndef _SYS_SYSPROTO_H_
-struct ocreat_args {
-	char	*path;
-	int	mode;
-};
-#endif
-int
-ocreat(td, uap)
-	struct thread *td;
-	register struct ocreat_args /* {
-		char *path;
-		int mode;
-	} */ *uap;
-{
-
-	return (kern_open(td, uap->path, UIO_USERSPACE,
-	    O_WRONLY | O_CREAT | O_TRUNC, uap->mode));
-}
-#endif /* COMPAT_43 */
-
-/*
- * Create a special file.
- */
-#ifndef _SYS_SYSPROTO_H_
-struct mknod_args {
-	char	*path;
-	int	mode;
-	int	dev;
-};
-#endif
-int
-mknod(td, uap)
-	struct thread *td;
-	register struct mknod_args /* {
-		char *path;
-		int mode;
-		int dev;
-	} */ *uap;
-{
-
-	return (kern_mknod(td, uap->path, UIO_USERSPACE, uap->mode, uap->dev));
-}
-
-int
-kern_mknod(struct thread *td, char *path, enum uio_seg pathseg, int mode,
-    int dev)
-{
-	struct vnode *vp;
-	struct mount *mp;
-	struct vattr vattr;
-	int error;
-	int whiteout = 0;
-	struct nameidata nd;
-	int vfslocked;
-
-	AUDIT_ARG(mode, mode);
-	AUDIT_ARG(dev, dev);
-	switch (mode & S_IFMT) {
-	case S_IFCHR:
-	case S_IFBLK:
-		error = priv_check(td, PRIV_VFS_MKNOD_DEV);
-		break;
-	case S_IFMT:
-		error = priv_check(td, PRIV_VFS_MKNOD_BAD);
-		break;
-	case S_IFWHT:
-		error = priv_check(td, PRIV_VFS_MKNOD_WHT);
-		break;
-	default:
-		error = EINVAL;
-		break;
-	}
-	if (error)
-		return (error);
-restart:
-	bwillwrite();
-	NDINIT(&nd, CREATE, LOCKPARENT | SAVENAME | MPSAFE | AUDITVNODE1,
-	    pathseg, path, td);
-	if ((error = namei(&nd)) != 0)
-		return (error);
-	vfslocked = NDHASGIANT(&nd);
-	vp = nd.ni_vp;
-	if (vp != NULL) {
-		NDFREE(&nd, NDF_ONLY_PNBUF);
-		if (vp == nd.ni_dvp)
-			vrele(nd.ni_dvp);
-		else
-			vput(nd.ni_dvp);
-		vrele(vp);
-		VFS_UNLOCK_GIANT(vfslocked);
-		return (EEXIST);
-	} else {
-		VATTR_NULL(&vattr);
-		FILEDESC_LOCK_FAST(td->td_proc->p_fd);
-		vattr.va_mode = (mode & ALLPERMS) &
-		    ~td->td_proc->p_fd->fd_cmask;
-		FILEDESC_UNLOCK_FAST(td->td_proc->p_fd);
-		vattr.va_rdev = dev;
-		whiteout = 0;
-
-		switch (mode & S_IFMT) {
-		case S_IFMT:	/* used by badsect to flag bad sectors */
-			vattr.va_type = VBAD;
-			break;
-		case S_IFCHR:
-			vattr.va_type = VCHR;
-			break;
-		case S_IFBLK:
-			vattr.va_type = VBLK;
-			break;
-		case S_IFWHT:
-			whiteout = 1;
-			break;
-		default:
-			panic("kern_mknod: invalid mode");
-		}
-	}
-	if (vn_start_write(nd.ni_dvp, &mp, V_NOWAIT) != 0) {
-		NDFREE(&nd, NDF_ONLY_PNBUF);
-		vput(nd.ni_dvp);
-		VFS_UNLOCK_GIANT(vfslocked);
-		if ((error = vn_start_write(NULL, &mp, V_XSLEEP | PCATCH)) != 0)
-			return (error);
-		goto restart;
-	}
-#ifdef MAC
-	if (error == 0 && !whiteout)
-		error = mac_check_vnode_create(td->td_ucred, nd.ni_dvp,
-		    &nd.ni_cnd, &vattr);
-#endif
-	if (!error) {
-		VOP_LEASE(nd.ni_dvp, td, td->td_ucred, LEASE_WRITE);
-		if (whiteout)
-			error = VOP_WHITEOUT(nd.ni_dvp, &nd.ni_cnd, CREATE);
-		else {
-			error = VOP_MKNOD(nd.ni_dvp, &nd.ni_vp,
-						&nd.ni_cnd, &vattr);
-			if (error == 0)
-				vput(nd.ni_vp);
-		}
-	}
-	NDFREE(&nd, NDF_ONLY_PNBUF);
-	vput(nd.ni_dvp);
-	vn_finished_write(mp);
-	VFS_UNLOCK_GIANT(vfslocked);
-	return (error);
-}
-
-/*
- * Create a named pipe.
- */
-#ifndef _SYS_SYSPROTO_H_
-struct mkfifo_args {
-	char	*path;
-	int	mode;
-};
-#endif
-int
-mkfifo(td, uap)
-	struct thread *td;
-	register struct mkfifo_args /* {
-		char *path;
-		int mode;
-	} */ *uap;
-{
-
-	return (kern_mkfifo(td, uap->path, UIO_USERSPACE, uap->mode));
-}
-
-int
-kern_mkfifo(struct thread *td, char *path, enum uio_seg pathseg, int mode)
-{
-	struct mount *mp;
-	struct vattr vattr;
-	int error;
-	struct nameidata nd;
-	int vfslocked;
-
-	AUDIT_ARG(mode, mode);
-restart:
-	bwillwrite();
-	NDINIT(&nd, CREATE, LOCKPARENT | SAVENAME | MPSAFE | AUDITVNODE1,
-	    pathseg, path, td);
-	if ((error = namei(&nd)) != 0)
-		return (error);
-	vfslocked = NDHASGIANT(&nd);
-	if (nd.ni_vp != NULL) {
-		NDFREE(&nd, NDF_ONLY_PNBUF);
-		if (nd.ni_vp == nd.ni_dvp)
-			vrele(nd.ni_dvp);
-		else
-			vput(nd.ni_dvp);
-		vrele(nd.ni_vp);
-		VFS_UNLOCK_GIANT(vfslocked);
-		return (EEXIST);
-	}
-	if (vn_start_write(nd.ni_dvp, &mp, V_NOWAIT) != 0) {
-		NDFREE(&nd, NDF_ONLY_PNBUF);
-		vput(nd.ni_dvp);
-		VFS_UNLOCK_GIANT(vfslocked);
-		if ((error = vn_start_write(NULL, &mp, V_XSLEEP | PCATCH)) != 0)
-			return (error);
-		goto restart;
-	}
-	VATTR_NULL(&vattr);
-	vattr.va_type = VFIFO;
-	FILEDESC_LOCK_FAST(td->td_proc->p_fd);
-	vattr.va_mode = (mode & ALLPERMS) & ~td->td_proc->p_fd->fd_cmask;
-	FILEDESC_UNLOCK_FAST(td->td_proc->p_fd);
-#ifdef MAC
-	error = mac_check_vnode_create(td->td_ucred, nd.ni_dvp, &nd.ni_cnd,
-	    &vattr);
-	if (error)
-		goto out;
-#endif
-	VOP_LEASE(nd.ni_dvp, td, td->td_ucred, LEASE_WRITE);
-	error = VOP_MKNOD(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, &vattr);
-	if (error == 0)
-		vput(nd.ni_vp);
-#ifdef MAC
-out:
-#endif
-	vput(nd.ni_dvp);
-	vn_finished_write(mp);
-	VFS_UNLOCK_GIANT(vfslocked);
-	NDFREE(&nd, NDF_ONLY_PNBUF);
-	return (error);
-}
-
-/*
- * Make a hard file link.
- */
-#ifndef _SYS_SYSPROTO_H_
-struct link_args {
-	char	*path;
-	char	*link;
-};
-#endif
-int
-link(td, uap)
-	struct thread *td;
-	register struct link_args /* {
-		char *path;
-		char *link;
-	} */ *uap;
-{
-	int error;
-
-	error = kern_link(td, uap->path, uap->link, UIO_USERSPACE);
-	return (error);
-}
-
-static int hardlink_check_uid = 0;
-SYSCTL_INT(_security_bsd, OID_AUTO, hardlink_check_uid, CTLFLAG_RW,
-    &hardlink_check_uid, 0,
-    "Unprivileged processes cannot create hard links to files owned by other "
-    "users");
-static int hardlink_check_gid = 0;
-SYSCTL_INT(_security_bsd, OID_AUTO, hardlink_check_gid, CTLFLAG_RW,
-    &hardlink_check_gid, 0,
-    "Unprivileged processes cannot create hard links to files owned by other "
-    "groups");
-
-static int
-can_hardlink(struct vnode *vp, struct thread *td, struct ucred *cred)
-{
-	struct vattr va;
-	int error;
-
-	if (!hardlink_check_uid && !hardlink_check_gid)
-		return (0);
-
-	error = VOP_GETATTR(vp, &va, cred, td);
-	if (error != 0)
-		return (error);
-
-	if (hardlink_check_uid && cred->cr_uid != va.va_uid) {
-		error = priv_check_cred(cred, PRIV_VFS_LINK,
-		    SUSER_ALLOWJAIL);
-		if (error)
-			return (error);
-	}
-
-	if (hardlink_check_gid && !groupmember(va.va_gid, cred)) {
-		error = priv_check_cred(cred, PRIV_VFS_LINK,
-		    SUSER_ALLOWJAIL);
-		if (error)
-			return (error);
-	}
-
-	return (0);
-}
-
-int
-kern_link(struct thread *td, char *path, char *link, enum uio_seg segflg)
-{
-	struct vnode *vp;
-	struct mount *mp;
-	struct nameidata nd;
-	int vfslocked;
-	int lvfslocked;
-	int error;
-
-	bwillwrite();
-	NDINIT(&nd, LOOKUP, FOLLOW | MPSAFE | AUDITVNODE1, segflg, path, td);
-	if ((error = namei(&nd)) != 0)
-		return (error);
-	vfslocked = NDHASGIANT(&nd);
-	NDFREE(&nd, NDF_ONLY_PNBUF);
-	vp = nd.ni_vp;
-	if (vp->v_type == VDIR) {
-		vrele(vp);
-		VFS_UNLOCK_GIANT(vfslocked);
-		return (EPERM);		/* POSIX */
-	}
-	if ((error = vn_start_write(vp, &mp, V_WAIT | PCATCH)) != 0) {
-		vrele(vp);
-		VFS_UNLOCK_GIANT(vfslocked);
-		return (error);
-	}
-	NDINIT(&nd, CREATE, LOCKPARENT | SAVENAME | MPSAFE | AUDITVNODE2,
-	    segflg, link, td);
-	if ((error = namei(&nd)) == 0) {
-		lvfslocked = NDHASGIANT(&nd);
-		if (nd.ni_vp != NULL) {
-			if (nd.ni_dvp == nd.ni_vp)
-				vrele(nd.ni_dvp);
-			else
-				vput(nd.ni_dvp);
-			vrele(nd.ni_vp);
-			error = EEXIST;
-		} else if ((error = vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td))
-		    == 0) {
-			VOP_LEASE(nd.ni_dvp, td, td->td_ucred, LEASE_WRITE);
-			VOP_LEASE(vp, td, td->td_ucred, LEASE_WRITE);
-			error = can_hardlink(vp, td, td->td_ucred);
-			if (error == 0)
-#ifdef MAC
-				error = mac_check_vnode_link(td->td_ucred,
-				    nd.ni_dvp, vp, &nd.ni_cnd);
-			if (error == 0)
-#endif
-				error = VOP_LINK(nd.ni_dvp, vp, &nd.ni_cnd);
-			VOP_UNLOCK(vp, 0, td);
-			vput(nd.ni_dvp);
-		}
-		NDFREE(&nd, NDF_ONLY_PNBUF);
-		VFS_UNLOCK_GIANT(lvfslocked);
-	}
-	vrele(vp);
-	vn_finished_write(mp);
-	VFS_UNLOCK_GIANT(vfslocked);
-	return (error);
-}
-
-/*
- * Make a symbolic link.
- */
-#ifndef _SYS_SYSPROTO_H_
-struct symlink_args {
-	char	*path;
-	char	*link;
-};
-#endif
-int
-symlink(td, uap)
-	struct thread *td;
-	register struct symlink_args /* {
-		char *path;
-		char *link;
-	} */ *uap;
-{
-
-	return (kern_symlink(td, uap->path, uap->link, UIO_USERSPACE));
-}
-
-int
-kern_symlink(struct thread *td, char *path, char *link, enum uio_seg segflg)
-{
-	struct mount *mp;
-	struct vattr vattr;
-	char *syspath;
-	int error;
-	struct nameidata nd;
-	int vfslocked;
-
-	if (segflg == UIO_SYSSPACE) {
-		syspath = path;
-	} else {
-		syspath = uma_zalloc(namei_zone, M_WAITOK);
-		if ((error = copyinstr(path, syspath, MAXPATHLEN, NULL)) != 0)
-			goto out;
-	}
-	AUDIT_ARG(text, syspath);
-restart:
-	bwillwrite();
-	NDINIT(&nd, CREATE, LOCKPARENT | SAVENAME | MPSAFE | AUDITVNODE1,
-	    segflg, link, td);
-	if ((error = namei(&nd)) != 0)
-		goto out;
-	vfslocked = NDHASGIANT(&nd);
-	if (nd.ni_vp) {
-		NDFREE(&nd, NDF_ONLY_PNBUF);
-		if (nd.ni_vp == nd.ni_dvp)
-			vrele(nd.ni_dvp);
-		else
-			vput(nd.ni_dvp);
-		vrele(nd.ni_vp);
-		VFS_UNLOCK_GIANT(vfslocked);
-		error = EEXIST;
-		goto out;
-	}
-	if (vn_start_write(nd.ni_dvp, &mp, V_NOWAIT) != 0) {
-		NDFREE(&nd, NDF_ONLY_PNBUF);
-		vput(nd.ni_dvp);
-		VFS_UNLOCK_GIANT(vfslocked);
-		if ((error = vn_start_write(NULL, &mp, V_XSLEEP | PCATCH)) != 0)
-			goto out;
-		goto restart;
-	}
-	VATTR_NULL(&vattr);
-	FILEDESC_LOCK_FAST(td->td_proc->p_fd);
-	vattr.va_mode = ACCESSPERMS &~ td->td_proc->p_fd->fd_cmask;
-	FILEDESC_UNLOCK_FAST(td->td_proc->p_fd);
-#ifdef MAC
-	vattr.va_type = VLNK;
-	error = mac_check_vnode_create(td->td_ucred, nd.ni_dvp, &nd.ni_cnd,
-	    &vattr);
-	if (error)
-		goto out2;
-#endif
-	VOP_LEASE(nd.ni_dvp, td, td->td_ucred, LEASE_WRITE);
-	error = VOP_SYMLINK(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, &vattr, syspath);
-	if (error == 0)
-		vput(nd.ni_vp);
-#ifdef MAC
-out2:
-#endif
-	NDFREE(&nd, NDF_ONLY_PNBUF);
-	vput(nd.ni_dvp);
-	vn_finished_write(mp);
-	VFS_UNLOCK_GIANT(vfslocked);
-out:
-	if (segflg != UIO_SYSSPACE)
-		uma_zfree(namei_zone, syspath);
-	return (error);
-}
-
-/*
- * Delete a whiteout from the filesystem.
- */
-int
-undelete(td, uap)
-	struct thread *td;
-	register struct undelete_args /* {
-		char *path;
-	} */ *uap;
-{
-	int error;
-	struct mount *mp;
-	struct nameidata nd;
-	int vfslocked;
-
-restart:
-	bwillwrite();
-	NDINIT(&nd, DELETE, LOCKPARENT | DOWHITEOUT | MPSAFE | AUDITVNODE1,
-	    UIO_USERSPACE, uap->path, td);
-	error = namei(&nd);
-	if (error)
-		return (error);
-	vfslocked = NDHASGIANT(&nd);
-
-	if (nd.ni_vp != NULLVP || !(nd.ni_cnd.cn_flags & ISWHITEOUT)) {
-		NDFREE(&nd, NDF_ONLY_PNBUF);
-		if (nd.ni_vp == nd.ni_dvp)
-			vrele(nd.ni_dvp);
-		else
-			vput(nd.ni_dvp);
-		if (nd.ni_vp)
-			vrele(nd.ni_vp);
-		VFS_UNLOCK_GIANT(vfslocked);
-		return (EEXIST);
-	}
-	if (vn_start_write(nd.ni_dvp, &mp, V_NOWAIT) != 0) {
-		NDFREE(&nd, NDF_ONLY_PNBUF);
-		vput(nd.ni_dvp);
-		VFS_UNLOCK_GIANT(vfslocked);
-		if ((error = vn_start_write(NULL, &mp, V_XSLEEP | PCATCH)) != 0)
-			return (error);
-		goto restart;
-	}
-	VOP_LEASE(nd.ni_dvp, td, td->td_ucred, LEASE_WRITE);
-	error = VOP_WHITEOUT(nd.ni_dvp, &nd.ni_cnd, DELETE);
-	NDFREE(&nd, NDF_ONLY_PNBUF);
-	vput(nd.ni_dvp);
-	vn_finished_write(mp);
-	VFS_UNLOCK_GIANT(vfslocked);
-	return (error);
-}
-
-/*
- * Delete a name from the filesystem.
- */
-#ifndef _SYS_SYSPROTO_H_
-struct unlink_args {
-	char	*path;
-};
-#endif
-int
-unlink(td, uap)
-	struct thread *td;
-	struct unlink_args /* {
-		char *path;
-	} */ *uap;
-{
-	int error;
-
-	error = kern_unlink(td, uap->path, UIO_USERSPACE);
-	return (error);
-}
-
-int
-kern_unlink(struct thread *td, char *path, enum uio_seg pathseg)
-{
-	struct mount *mp;
-	struct vnode *vp;
-	int error;
-	struct nameidata nd;
-	int vfslocked;
-
-restart:
-	bwillwrite();
-	NDINIT(&nd, DELETE, LOCKPARENT | LOCKLEAF | MPSAFE | AUDITVNODE1,
-	    pathseg, path, td);
-	if ((error = namei(&nd)) != 0)
-		return (error == EINVAL ? EPERM : error);
-	vfslocked = NDHASGIANT(&nd);
-	vp = nd.ni_vp;
-	if (vp->v_type == VDIR)
-		error = EPERM;		/* POSIX */
-	else {
-		/*
-		 * The root of a mounted filesystem cannot be deleted.
-		 *
-		 * XXX: can this only be a VDIR case?
-		 */
-		if (vp->v_vflag & VV_ROOT)
-			error = EBUSY;
-	}
-	if (error == 0) {
-		if (vn_start_write(nd.ni_dvp, &mp, V_NOWAIT) != 0) {
-			NDFREE(&nd, NDF_ONLY_PNBUF);
-			vput(nd.ni_dvp);
-			if (vp == nd.ni_dvp)
-				vrele(vp);
-			else
-				vput(vp);
-			VFS_UNLOCK_GIANT(vfslocked);
-			if ((error = vn_start_write(NULL, &mp,
-			    V_XSLEEP | PCATCH)) != 0)
-				return (error);
-			goto restart;
-		}
-#ifdef MAC
-		error = mac_check_vnode_delete(td->td_ucred, nd.ni_dvp, vp,
-		    &nd.ni_cnd);
-		if (error)
-			goto out;
-#endif
-		VOP_LEASE(nd.ni_dvp, td, td->td_ucred, LEASE_WRITE);
-		error = VOP_REMOVE(nd.ni_dvp, vp, &nd.ni_cnd);
-#ifdef MAC
-out:
-#endif
-		vn_finished_write(mp);
-	}
-	NDFREE(&nd, NDF_ONLY_PNBUF);
-	vput(nd.ni_dvp);
-	if (vp == nd.ni_dvp)
-		vrele(vp);
-	else
-		vput(vp);
-	VFS_UNLOCK_GIANT(vfslocked);
-	return (error);
-}
-
-/*
- * Reposition read/write file offset.
- */
-#ifndef _SYS_SYSPROTO_H_
-struct lseek_args {
-	int	fd;
-	int	pad;
-	off_t	offset;
-	int	whence;
-};
-#endif
-int
-lseek(td, uap)
-	struct thread *td;
-	register struct lseek_args /* {
-		int fd;
-		int pad;
-		off_t offset;
-		int whence;
-	} */ *uap;
-{
-	struct ucred *cred = td->td_ucred;
-	struct file *fp;
-	struct vnode *vp;
-	struct vattr vattr;
-	off_t offset;
-	int error, noneg;
-	int vfslocked;
-
-	if ((error = fget(td, uap->fd, &fp)) != 0)
-		return (error);
-	if (!(fp->f_ops->fo_flags & DFLAG_SEEKABLE)) {
-		fdrop(fp, td);
-		return (ESPIPE);
-	}
-	vp = fp->f_vnode;
-	vfslocked = VFS_LOCK_GIANT(vp->v_mount);
-	noneg = (vp->v_type != VCHR);
-	offset = uap->offset;
-	switch (uap->whence) {
-	case L_INCR:
-		if (noneg &&
-		    (fp->f_offset < 0 ||
-		    (offset > 0 && fp->f_offset > OFF_MAX - offset))) {
-			error = EOVERFLOW;
-			break;
-		}
-		offset += fp->f_offset;
-		break;
-	case L_XTND:
-		vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td);
-		error = VOP_GETATTR(vp, &vattr, cred, td);
-		VOP_UNLOCK(vp, 0, td);
-		if (error)
-			break;
-		if (noneg &&
-		    (vattr.va_size > OFF_MAX ||
-		    (offset > 0 && vattr.va_size > OFF_MAX - offset))) {
-			error = EOVERFLOW;
-			break;
-		}
-		offset += vattr.va_size;
-		break;
-	case L_SET:
-		break;
-	default:
-		error = EINVAL;
-	}
-	if (error == 0 && noneg && offset < 0)
-		error = EINVAL;
-	if (error != 0)
-		goto drop;
-	fp->f_offset = offset;
-	*(off_t *)(td->td_retval) = fp->f_offset;
-drop:
-	fdrop(fp, td);
-	VFS_UNLOCK_GIANT(vfslocked);
-	return (error);
-}
-
-#if defined(COMPAT_43)
-/*
- * Reposition read/write file offset.
- */
-#ifndef _SYS_SYSPROTO_H_
-struct olseek_args {
-	int	fd;
-	long	offset;
-	int	whence;
-};
-#endif
-int
-olseek(td, uap)
-	struct thread *td;
-	register struct olseek_args /* {
-		int fd;
-		long offset;
-		int whence;
-	} */ *uap;
-{
-	struct lseek_args /* {
-		int fd;
-		int pad;
-		off_t offset;
-		int whence;
-	} */ nuap;
-	int error;
-
-	nuap.fd = uap->fd;
-	nuap.offset = uap->offset;
-	nuap.whence = uap->whence;
-	error = lseek(td, &nuap);
-	return (error);
-}
-#endif /* COMPAT_43 */
-
-/*
- * Check access permissions using passed credentials.
- */
-static int
-vn_access(vp, user_flags, cred, td)
-	struct vnode	*vp;
-	int		user_flags;
-	struct ucred	*cred;
-	struct thread	*td;
-{
-	int error, flags;
-
-	/* Flags == 0 means only check for existence. */
-	error = 0;
-	if (user_flags) {
-		flags = 0;
-		if (user_flags & R_OK)
-			flags |= VREAD;
-		if (user_flags & W_OK)
-			flags |= VWRITE;
-		if (user_flags & X_OK)
-			flags |= VEXEC;
-#ifdef MAC
-		error = mac_check_vnode_access(cred, vp, flags);
-		if (error)
-			return (error);
-#endif
-		if ((flags & VWRITE) == 0 || (error = vn_writechk(vp)) == 0)
-			error = VOP_ACCESS(vp, flags, cred, td);
-	}
-	return (error);
-}
-
-/*
- * Check access permissions using "real" credentials.
- */
-#ifndef _SYS_SYSPROTO_H_
-struct access_args {
-	char	*path;
-	int	flags;
-};
-#endif
-int
-access(td, uap)
-	struct thread *td;
-	register struct access_args /* {
-		char *path;
-		int flags;
-	} */ *uap;
-{
-
-	return (kern_access(td, uap->path, UIO_USERSPACE, uap->flags));
-}
-
-int
-kern_access(struct thread *td, char *path, enum uio_seg pathseg, int flags)
-{
-	struct ucred *cred, *tmpcred;
-	register struct vnode *vp;
-	struct nameidata nd;
-	int vfslocked;
-	int error;
-
-	/*
-	 * Create and modify a temporary credential instead of one that
-	 * is potentially shared.  This could also mess up socket
-	 * buffer accounting which can run in an interrupt context.
-	 */
-	cred = td->td_ucred;
-	tmpcred = crdup(cred);
-	tmpcred->cr_uid = cred->cr_ruid;
-	tmpcred->cr_groups[0] = cred->cr_rgid;
-	td->td_ucred = tmpcred;
-	NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF | MPSAFE | AUDITVNODE1,
-	    pathseg, path, td);
-	if ((error = namei(&nd)) != 0)
-		goto out1;
-	vfslocked = NDHASGIANT(&nd);
-	vp = nd.ni_vp;
-
-	error = vn_access(vp, flags, tmpcred, td);
-	NDFREE(&nd, NDF_ONLY_PNBUF);
-	vput(vp);
-	VFS_UNLOCK_GIANT(vfslocked);
-out1:
-	td->td_ucred = cred;
-	crfree(tmpcred);
-	return (error);
-}
-
-/*
- * Check access permissions using "effective" credentials.
- */
-#ifndef _SYS_SYSPROTO_H_
-struct eaccess_args {
-	char	*path;
-	int	flags;
-};
-#endif
-int
-eaccess(td, uap)
-	struct thread *td;
-	register struct eaccess_args /* {
-		char *path;
-		int flags;
-	} */ *uap;
-{
-
-	return (kern_eaccess(td, uap->path, UIO_USERSPACE, uap->flags));
-}
-
-int
-kern_eaccess(struct thread *td, char *path, enum uio_seg pathseg, int flags)
-{
-	struct nameidata nd;
-	struct vnode *vp;
-	int vfslocked;
-	int error;
-
-	NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF | MPSAFE | AUDITVNODE1,
-	    pathseg, path, td);
-	if ((error = namei(&nd)) != 0)
-		return (error);
-	vp = nd.ni_vp;
-	vfslocked = NDHASGIANT(&nd);
-	error = vn_access(vp, flags, td->td_ucred, td);
-	NDFREE(&nd, NDF_ONLY_PNBUF);
-	vput(vp);
-	VFS_UNLOCK_GIANT(vfslocked);
-	return (error);
-}
-
-#if defined(COMPAT_43)
-/*
- * Get file status; this version follows links.
- */
-#ifndef _SYS_SYSPROTO_H_
-struct ostat_args {
-	char	*path;
-	struct ostat *ub;
-};
-#endif
-int
-ostat(td, uap)
-	struct thread *td;
-	register struct ostat_args /* {
-		char *path;
-		struct ostat *ub;
-	} */ *uap;
-{
-	struct stat sb;
-	struct ostat osb;
-	int error;
-
-	error = kern_stat(td, uap->path, UIO_USERSPACE, &sb);
-	if (error)
-		return (error);
-	cvtstat(&sb, &osb);
-	error = copyout(&osb, uap->ub, sizeof (osb));
-	return (error);
-}
-
-/*
- * Get file status; this version does not follow links.
- */
-#ifndef _SYS_SYSPROTO_H_
-struct olstat_args {
-	char	*path;
-	struct ostat *ub;
-};
-#endif
-int
-olstat(td, uap)
-	struct thread *td;
-	register struct olstat_args /* {
-		char *path;
-		struct ostat *ub;
-	} */ *uap;
-{
-	struct stat sb;
-	struct ostat osb;
-	int error;
-
-	error = kern_lstat(td, uap->path, UIO_USERSPACE, &sb);
-	if (error)
-		return (error);
-	cvtstat(&sb, &osb);
-	error = copyout(&osb, uap->ub, sizeof (osb));
-	return (error);
-}
-
-/*
- * Convert from an old to a new stat structure.
- */
-void
-cvtstat(st, ost)
-	struct stat *st;
-	struct ostat *ost;
-{
-
-	ost->st_dev = st->st_dev;
-	ost->st_ino = st->st_ino;
-	ost->st_mode = st->st_mode;
-	ost->st_nlink = st->st_nlink;
-	ost->st_uid = st->st_uid;
-	ost->st_gid = st->st_gid;
-	ost->st_rdev = st->st_rdev;
-	if (st->st_size < (quad_t)1 << 32)
-		ost->st_size = st->st_size;
-	else
-		ost->st_size = -2;
-	ost->st_atime = st->st_atime;
-	ost->st_mtime = st->st_mtime;
-	ost->st_ctime = st->st_ctime;
-	ost->st_blksize = st->st_blksize;
-	ost->st_blocks = st->st_blocks;
-	ost->st_flags = st->st_flags;
-	ost->st_gen = st->st_gen;
-}
-#endif /* COMPAT_43 */
-
-/*
- * Get file status; this version follows links.
- */
-#ifndef _SYS_SYSPROTO_H_
-struct stat_args {
-	char	*path;
-	struct stat *ub;
-};
-#endif
-int
-stat(td, uap)
-	struct thread *td;
-	register struct stat_args /* {
-		char *path;
-		struct stat *ub;
-	} */ *uap;
-{
-	struct stat sb;
-	int error;
-
-	error = kern_stat(td, uap->path, UIO_USERSPACE, &sb);
-	if (error == 0)
-		error = copyout(&sb, uap->ub, sizeof (sb));
-	return (error);
-}
-
-int
-kern_stat(struct thread *td, char *path, enum uio_seg pathseg, struct stat *sbp)
-{
-	struct nameidata nd;
-	struct stat sb;
-	int error, vfslocked;
-
-	NDINIT(&nd, LOOKUP,
-	    FOLLOW | LOCKSHARED | LOCKLEAF | MPSAFE | AUDITVNODE1,
-	    pathseg, path, td);
-	if ((error = namei(&nd)) != 0)
-		return (error);
-	vfslocked = NDHASGIANT(&nd);
-	error = vn_stat(nd.ni_vp, &sb, td->td_ucred, NOCRED, td);
-	NDFREE(&nd, NDF_ONLY_PNBUF);
-	vput(nd.ni_vp);
-	VFS_UNLOCK_GIANT(vfslocked);
-	if (mtx_owned(&Giant))
-		printf("stat(%d): %s\n", vfslocked, path);
-	if (error)
-		return (error);
-	*sbp = sb;
-	return (0);
-}
-
-/*
- * Get file status; this version does not follow links.
- */
-#ifndef _SYS_SYSPROTO_H_
-struct lstat_args {
-	char	*path;
-	struct stat *ub;
-};
-#endif
-int
-lstat(td, uap)
-	struct thread *td;
-	register struct lstat_args /* {
-		char *path;
-		struct stat *ub;
-	} */ *uap;
-{
-	struct stat sb;
-	int error;
-
-	error = kern_lstat(td, uap->path, UIO_USERSPACE, &sb);
-	if (error == 0)
-		error = copyout(&sb, uap->ub, sizeof (sb));
-	return (error);
-}
-
-int
-kern_lstat(struct thread *td, char *path, enum uio_seg pathseg, struct stat *sbp)
-{
-	struct vnode *vp;
-	struct stat sb;
-	struct nameidata nd;
-	int error, vfslocked;
-
-	NDINIT(&nd, LOOKUP,
-	    NOFOLLOW | LOCKLEAF | LOCKSHARED | MPSAFE | AUDITVNODE1,
-	    pathseg, path, td);
-	if ((error = namei(&nd)) != 0)
-		return (error);
-	vfslocked = NDHASGIANT(&nd);
-	vp = nd.ni_vp;
-	error = vn_stat(vp, &sb, td->td_ucred, NOCRED, td);
-	NDFREE(&nd, NDF_ONLY_PNBUF);
-	vput(vp);
-	VFS_UNLOCK_GIANT(vfslocked);
-	if (error)
-		return (error);
-	*sbp = sb;
-	return (0);
-}
-
-/*
- * Implementation of the NetBSD [l]stat() functions.
- */
-void
-cvtnstat(sb, nsb)
-	struct stat *sb;
-	struct nstat *nsb;
-{
-	bzero(nsb, sizeof *nsb);
-	nsb->st_dev = sb->st_dev;
-	nsb->st_ino = sb->st_ino;
-	nsb->st_mode = sb->st_mode;
-	nsb->st_nlink = sb->st_nlink;
-	nsb->st_uid = sb->st_uid;
-	nsb->st_gid = sb->st_gid;
-	nsb->st_rdev = sb->st_rdev;
-	nsb->st_atimespec = sb->st_atimespec;
-	nsb->st_mtimespec = sb->st_mtimespec;
-	nsb->st_ctimespec = sb->st_ctimespec;
-	nsb->st_size = sb->st_size;
-	nsb->st_blocks = sb->st_blocks;
-	nsb->st_blksize = sb->st_blksize;
-	nsb->st_flags = sb->st_flags;
-	nsb->st_gen = sb->st_gen;
-	nsb->st_birthtimespec = sb->st_birthtimespec;
-}
-
-#ifndef _SYS_SYSPROTO_H_
-struct nstat_args {
-	char	*path;
-	struct nstat *ub;
-};
-#endif
-int
-nstat(td, uap)
-	struct thread *td;
-	register struct nstat_args /* {
-		char *path;
-		struct nstat *ub;
-	} */ *uap;
-{
-	struct stat sb;
-	struct nstat nsb;
-	int error;
-
-	error = kern_stat(td, uap->path, UIO_USERSPACE, &sb);
-	if (error)
-		return (error);
-	cvtnstat(&sb, &nsb);
-	error = copyout(&nsb, uap->ub, sizeof (nsb));
-	return (error);
-}
-
-/*
- * NetBSD lstat.  Get file status; this version does not follow links.
- */
-#ifndef _SYS_SYSPROTO_H_
-struct lstat_args {
-	char	*path;
-	struct stat *ub;
-};
-#endif
-int
-nlstat(td, uap)
-	struct thread *td;
-	register struct nlstat_args /* {
-		char *path;
-		struct nstat *ub;
-	} */ *uap;
-{
-	struct stat sb;
-	struct nstat nsb;
-	int error;
-
-	error = kern_lstat(td, uap->path, UIO_USERSPACE, &sb);
-	if (error)
-		return (error);
-	cvtnstat(&sb, &nsb);
-	error = copyout(&nsb, uap->ub, sizeof (nsb));
-	return (error);
-}
-
-/*
- * Get configurable pathname variables.
- */
-#ifndef _SYS_SYSPROTO_H_
-struct pathconf_args {
-	char	*path;
-	int	name;
-};
-#endif
-int
-pathconf(td, uap)
-	struct thread *td;
-	register struct pathconf_args /* {
-		char *path;
-		int name;
-	} */ *uap;
-{
-
-	return (kern_pathconf(td, uap->path, UIO_USERSPACE, uap->name));
-}
-
-int
-kern_pathconf(struct thread *td, char *path, enum uio_seg pathseg, int name)
-{
-	struct nameidata nd;
-	int error, vfslocked;
-
-	NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF | MPSAFE | AUDITVNODE1,
-	    pathseg, path, td);
-	if ((error = namei(&nd)) != 0)
-		return (error);
-	vfslocked = NDHASGIANT(&nd);
-	NDFREE(&nd, NDF_ONLY_PNBUF);
-
-	/* If asynchronous I/O is available, it works for all files. */
-	if (name == _PC_ASYNC_IO)
-		td->td_retval[0] = async_io_version;
-	else
-		error = VOP_PATHCONF(nd.ni_vp, name, td->td_retval);
-	vput(nd.ni_vp);
-	VFS_UNLOCK_GIANT(vfslocked);
-	return (error);
-}
-
-/*
- * Return target name of a symbolic link.
- */
-#ifndef _SYS_SYSPROTO_H_
-struct readlink_args {
-	char	*path;
-	char	*buf;
-	int	count;
-};
-#endif
-int
-readlink(td, uap)
-	struct thread *td;
-	register struct readlink_args /* {
-		char *path;
-		char *buf;
-		int count;
-	} */ *uap;
-{
-
-	return (kern_readlink(td, uap->path, UIO_USERSPACE, uap->buf,
-	    UIO_USERSPACE, uap->count));
-}
-
-int
-kern_readlink(struct thread *td, char *path, enum uio_seg pathseg, char *buf,
-    enum uio_seg bufseg, int count)
-{
-	register struct vnode *vp;
-	struct iovec aiov;
-	struct uio auio;
-	int error;
-	struct nameidata nd;
-	int vfslocked;
-
-	NDINIT(&nd, LOOKUP, NOFOLLOW | LOCKLEAF | MPSAFE | AUDITVNODE1,
-	    pathseg, path, td);
-	if ((error = namei(&nd)) != 0)
-		return (error);
-	NDFREE(&nd, NDF_ONLY_PNBUF);
-	vfslocked = NDHASGIANT(&nd);
-	vp = nd.ni_vp;
-#ifdef MAC
-	error = mac_check_vnode_readlink(td->td_ucred, vp);
-	if (error) {
-		vput(vp);
-		VFS_UNLOCK_GIANT(vfslocked);
-		return (error);
-	}
-#endif
-	if (vp->v_type != VLNK)
-		error = EINVAL;
-	else {
-		aiov.iov_base = buf;
-		aiov.iov_len = count;
-		auio.uio_iov = &aiov;
-		auio.uio_iovcnt = 1;
-		auio.uio_offset = 0;
-		auio.uio_rw = UIO_READ;
-		auio.uio_segflg = bufseg;
-		auio.uio_td = td;
-		auio.uio_resid = count;
-		error = VOP_READLINK(vp, &auio, td->td_ucred);
-	}
-	vput(vp);
-	VFS_UNLOCK_GIANT(vfslocked);
-	td->td_retval[0] = count - auio.uio_resid;
-	return (error);
-}
-
-/*
- * Common implementation code for chflags() and fchflags().
- */
-static int
-setfflags(td, vp, flags)
-	struct thread *td;
-	struct vnode *vp;
-	int flags;
-{
-	int error;
-	struct mount *mp;
-	struct vattr vattr;
-
-	/*
-	 * Prevent non-root users from setting flags on devices.  When
-	 * a device is reused, users can retain ownership of the device
-	 * if they are allowed to set flags and programs assume that
-	 * chown can't fail when done as root.
-	 */
-	if (vp->v_type == VCHR || vp->v_type == VBLK) {
-		error = priv_check_cred(td->td_ucred, PRIV_VFS_CHFLAGS_DEV,
-		    SUSER_ALLOWJAIL);
-		if (error)
-			return (error);
-	}
-
-	if ((error = vn_start_write(vp, &mp, V_WAIT | PCATCH)) != 0)
-		return (error);
-	VOP_LEASE(vp, td, td->td_ucred, LEASE_WRITE);
-	vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td);
-	VATTR_NULL(&vattr);
-	vattr.va_flags = flags;
-#ifdef MAC
-	error = mac_check_vnode_setflags(td->td_ucred, vp, vattr.va_flags);
-	if (error == 0)
-#endif
-		error = VOP_SETATTR(vp, &vattr, td->td_ucred, td);
-	VOP_UNLOCK(vp, 0, td);
-	vn_finished_write(mp);
-	return (error);
-}
-
-/*
- * Change flags of a file given a path name.
- */
-#ifndef _SYS_SYSPROTO_H_
-struct chflags_args {
-	char	*path;
-	int	flags;
-};
-#endif
-int
-chflags(td, uap)
-	struct thread *td;
-	register struct chflags_args /* {
-		char *path;
-		int flags;
-	} */ *uap;
-{
-	int error;
-	struct nameidata nd;
-	int vfslocked;
-
-	AUDIT_ARG(fflags, uap->flags);
-	NDINIT(&nd, LOOKUP, FOLLOW | MPSAFE | AUDITVNODE1, UIO_USERSPACE,
-	    uap->path, td);
-	if ((error = namei(&nd)) != 0)
-		return (error);
-	NDFREE(&nd, NDF_ONLY_PNBUF);
-	vfslocked = NDHASGIANT(&nd);
-	error = setfflags(td, nd.ni_vp, uap->flags);
-	vrele(nd.ni_vp);
-	VFS_UNLOCK_GIANT(vfslocked);
-	return (error);
-}
-
-/*
- * Same as chflags() but doesn't follow symlinks.
- */
-int
-lchflags(td, uap)
-	struct thread *td;
-	register struct lchflags_args /* {
-		char *path;
-		int flags;
-	} */ *uap;
-{
-	int error;
-	struct nameidata nd;
-	int vfslocked;
-
-	AUDIT_ARG(fflags, uap->flags);
-	NDINIT(&nd, LOOKUP, NOFOLLOW | MPSAFE | AUDITVNODE1, UIO_USERSPACE,
-	    uap->path, td);
-	if ((error = namei(&nd)) != 0)
-		return (error);
-	vfslocked = NDHASGIANT(&nd);
-	NDFREE(&nd, NDF_ONLY_PNBUF);
-	error = setfflags(td, nd.ni_vp, uap->flags);
-	vrele(nd.ni_vp);
-	VFS_UNLOCK_GIANT(vfslocked);
-	return (error);
-}
-
-/*
- * Change flags of a file given a file descriptor.
- */
-#ifndef _SYS_SYSPROTO_H_
-struct fchflags_args {
-	int	fd;
-	int	flags;
-};
-#endif
-int
-fchflags(td, uap)
-	struct thread *td;
-	register struct fchflags_args /* {
-		int fd;
-		int flags;
-	} */ *uap;
-{
-	struct file *fp;
-	int vfslocked;
-	int error;
-
-	AUDIT_ARG(fd, uap->fd);
-	AUDIT_ARG(fflags, uap->flags);
-	if ((error = getvnode(td->td_proc->p_fd, uap->fd, &fp)) != 0)
-		return (error);
-	vfslocked = VFS_LOCK_GIANT(fp->f_vnode->v_mount);
-#ifdef AUDIT
-	vn_lock(fp->f_vnode, LK_EXCLUSIVE | LK_RETRY, td);
-	AUDIT_ARG(vnode, fp->f_vnode, ARG_VNODE1);
-	VOP_UNLOCK(fp->f_vnode, 0, td);
-#endif
-	error = setfflags(td, fp->f_vnode, uap->flags);
-	VFS_UNLOCK_GIANT(vfslocked);
-	fdrop(fp, td);
-	return (error);
-}
-
-/*
- * Common implementation code for chmod(), lchmod() and fchmod().
- */
-static int
-setfmode(td, vp, mode)
-	struct thread *td;
-	struct vnode *vp;
-	int mode;
-{
-	int error;
-	struct mount *mp;
-	struct vattr vattr;
-
-	if ((error = vn_start_write(vp, &mp, V_WAIT | PCATCH)) != 0)
-		return (error);
-	VOP_LEASE(vp, td, td->td_ucred, LEASE_WRITE);
-	vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td);
-	VATTR_NULL(&vattr);
-	vattr.va_mode = mode & ALLPERMS;
-#ifdef MAC
-	error = mac_check_vnode_setmode(td->td_ucred, vp, vattr.va_mode);
-	if (error == 0)
-#endif
-		error = VOP_SETATTR(vp, &vattr, td->td_ucred, td);
-	VOP_UNLOCK(vp, 0, td);
-	vn_finished_write(mp);
-	return (error);
-}
-
-/*
- * Change mode of a file given path name.
- */
-#ifndef _SYS_SYSPROTO_H_
-struct chmod_args {
-	char	*path;
-	int	mode;
-};
-#endif
-int
-chmod(td, uap)
-	struct thread *td;
-	register struct chmod_args /* {
-		char *path;
-		int mode;
-	} */ *uap;
-{
-
-	return (kern_chmod(td, uap->path, UIO_USERSPACE, uap->mode));
-}
-
-int
-kern_chmod(struct thread *td, char *path, enum uio_seg pathseg, int mode)
-{
-	int error;
-	struct nameidata nd;
-	int vfslocked;
-
-	AUDIT_ARG(mode, mode);
-	NDINIT(&nd, LOOKUP, FOLLOW | MPSAFE | AUDITVNODE1, pathseg, path, td);
-	if ((error = namei(&nd)) != 0)
-		return (error);
-	vfslocked = NDHASGIANT(&nd);
-	NDFREE(&nd, NDF_ONLY_PNBUF);
-	error = setfmode(td, nd.ni_vp, mode);
-	vrele(nd.ni_vp);
-	VFS_UNLOCK_GIANT(vfslocked);
-	return (error);
-}
-
-/*
- * Change mode of a file given path name (don't follow links.)
- */
-#ifndef _SYS_SYSPROTO_H_
-struct lchmod_args {
-	char	*path;
-	int	mode;
-};
-#endif
-int
-lchmod(td, uap)
-	struct thread *td;
-	register struct lchmod_args /* {
-		char *path;
-		int mode;
-	} */ *uap;
-{
-	int error;
-	struct nameidata nd;
-	int vfslocked;
-
-	AUDIT_ARG(mode, (mode_t)uap->mode);
-	NDINIT(&nd, LOOKUP, NOFOLLOW | MPSAFE | AUDITVNODE1, UIO_USERSPACE,
-	    uap->path, td);
-	if ((error = namei(&nd)) != 0)
-		return (error);
-	vfslocked = NDHASGIANT(&nd);
-	NDFREE(&nd, NDF_ONLY_PNBUF);
-	error = setfmode(td, nd.ni_vp, uap->mode);
-	vrele(nd.ni_vp);
-	VFS_UNLOCK_GIANT(vfslocked);
-	return (error);
-}
-
-/*
- * Change mode of a file given a file descriptor.
- */
-#ifndef _SYS_SYSPROTO_H_
-struct fchmod_args {
-	int	fd;
-	int	mode;
-};
-#endif
-int
-fchmod(td, uap)
-	struct thread *td;
-	register struct fchmod_args /* {
-		int fd;
-		int mode;
-	} */ *uap;
-{
-	struct file *fp;
-	int vfslocked;
-	int error;
-
-	AUDIT_ARG(fd, uap->fd);
-	AUDIT_ARG(mode, uap->mode);
-	if ((error = getvnode(td->td_proc->p_fd, uap->fd, &fp)) != 0)
-		return (error);
-	vfslocked = VFS_LOCK_GIANT(fp->f_vnode->v_mount);
-#ifdef AUDIT
-	vn_lock(fp->f_vnode, LK_EXCLUSIVE | LK_RETRY, td);
-	AUDIT_ARG(vnode, fp->f_vnode, ARG_VNODE1);
-	VOP_UNLOCK(fp->f_vnode, 0, td);
-#endif
-	error = setfmode(td, fp->f_vnode, uap->mode);
-	VFS_UNLOCK_GIANT(vfslocked);
-	fdrop(fp, td);
-	return (error);
-}
-
-/*
- * Common implementation for chown(), lchown(), and fchown()
- */
-static int
-setfown(td, vp, uid, gid)
-	struct thread *td;
-	struct vnode *vp;
-	uid_t uid;
-	gid_t gid;
-{
-	int error;
-	struct mount *mp;
-	struct vattr vattr;
-
-	if ((error = vn_start_write(vp, &mp, V_WAIT | PCATCH)) != 0)
-		return (error);
-	VOP_LEASE(vp, td, td->td_ucred, LEASE_WRITE);
-	vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td);
-	VATTR_NULL(&vattr);
-	vattr.va_uid = uid;
-	vattr.va_gid = gid;
-#ifdef MAC
-	error = mac_check_vnode_setowner(td->td_ucred, vp, vattr.va_uid,
-	    vattr.va_gid);
-	if (error == 0)
-#endif
-		error = VOP_SETATTR(vp, &vattr, td->td_ucred, td);
-	VOP_UNLOCK(vp, 0, td);
-	vn_finished_write(mp);
-	return (error);
-}
-
-/*
- * Set ownership given a path name.
- */
-#ifndef _SYS_SYSPROTO_H_
-struct chown_args {
-	char	*path;
-	int	uid;
-	int	gid;
-};
-#endif
-int
-chown(td, uap)
-	struct thread *td;
-	register struct chown_args /* {
-		char *path;
-		int uid;
-		int gid;
-	} */ *uap;
-{
-
-	return (kern_chown(td, uap->path, UIO_USERSPACE, uap->uid, uap->gid));
-}
-
-int
-kern_chown(struct thread *td, char *path, enum uio_seg pathseg, int uid,
-    int gid)
-{
-	int error;
-	struct nameidata nd;
-	int vfslocked;
-
-	AUDIT_ARG(owner, uid, gid);
-	NDINIT(&nd, LOOKUP, FOLLOW | MPSAFE | AUDITVNODE1, pathseg, path, td);
-	if ((error = namei(&nd)) != 0)
-		return (error);
-	vfslocked = NDHASGIANT(&nd);
-	NDFREE(&nd, NDF_ONLY_PNBUF);
-	error = setfown(td, nd.ni_vp, uid, gid);
-	vrele(nd.ni_vp);
-	VFS_UNLOCK_GIANT(vfslocked);
-	return (error);
-}
-
-/*
- * Set ownership given a path name, do not cross symlinks.
- */
-#ifndef _SYS_SYSPROTO_H_
-struct lchown_args {
-	char	*path;
-	int	uid;
-	int	gid;
-};
-#endif
-int
-lchown(td, uap)
-	struct thread *td;
-	register struct lchown_args /* {
-		char *path;
-		int uid;
-		int gid;
-	} */ *uap;
-{
-
-	return (kern_lchown(td, uap->path, UIO_USERSPACE, uap->uid, uap->gid));
-}
-
-int
-kern_lchown(struct thread *td, char *path, enum uio_seg pathseg, int uid,
-    int gid)
-{
-	int error;
-	struct nameidata nd;
-	int vfslocked;
-
-	AUDIT_ARG(owner, uid, gid);
-	NDINIT(&nd, LOOKUP, NOFOLLOW | MPSAFE | AUDITVNODE1, pathseg, path, td);
-	if ((error = namei(&nd)) != 0)
-		return (error);
-	vfslocked = NDHASGIANT(&nd);
-	NDFREE(&nd, NDF_ONLY_PNBUF);
-	error = setfown(td, nd.ni_vp, uid, gid);
-	vrele(nd.ni_vp);
-	VFS_UNLOCK_GIANT(vfslocked);
-	return (error);
-}
-
-/*
- * Set ownership given a file descriptor.
- */
-#ifndef _SYS_SYSPROTO_H_
-struct fchown_args {
-	int	fd;
-	int	uid;
-	int	gid;
-};
-#endif
-int
-fchown(td, uap)
-	struct thread *td;
-	register struct fchown_args /* {
-		int fd;
-		int uid;
-		int gid;
-	} */ *uap;
-{
-	struct file *fp;
-	int vfslocked;
-	int error;
-
-	AUDIT_ARG(fd, uap->fd);
-	AUDIT_ARG(owner, uap->uid, uap->gid);
-	if ((error = getvnode(td->td_proc->p_fd, uap->fd, &fp)) != 0)
-		return (error);
-	vfslocked = VFS_LOCK_GIANT(fp->f_vnode->v_mount);
-#ifdef AUDIT
-	vn_lock(fp->f_vnode, LK_EXCLUSIVE | LK_RETRY, td);
-	AUDIT_ARG(vnode, fp->f_vnode, ARG_VNODE1);
-	VOP_UNLOCK(fp->f_vnode, 0, td);
-#endif
-	error = setfown(td, fp->f_vnode, uap->uid, uap->gid);
-	VFS_UNLOCK_GIANT(vfslocked);
-	fdrop(fp, td);
-	return (error);
-}
-
-/*
- * Common implementation code for utimes(), lutimes(), and futimes().
- */
-static int
-getutimes(usrtvp, tvpseg, tsp)
-	const struct timeval *usrtvp;
-	enum uio_seg tvpseg;
-	struct timespec *tsp;
-{
-	struct timeval tv[2];
-	const struct timeval *tvp;
-	int error;
-
-	if (usrtvp == NULL) {
-		microtime(&tv[0]);
-		TIMEVAL_TO_TIMESPEC(&tv[0], &tsp[0]);
-		tsp[1] = tsp[0];
-	} else {
-		if (tvpseg == UIO_SYSSPACE) {
-			tvp = usrtvp;
-		} else {
-			if ((error = copyin(usrtvp, tv, sizeof(tv))) != 0)
-				return (error);
-			tvp = tv;
-		}
-
-		if (tvp[0].tv_usec < 0 || tvp[0].tv_usec >= 1000000 ||
-		    tvp[1].tv_usec < 0 || tvp[1].tv_usec >= 1000000)
-			return (EINVAL);
-		TIMEVAL_TO_TIMESPEC(&tvp[0], &tsp[0]);
-		TIMEVAL_TO_TIMESPEC(&tvp[1], &tsp[1]);
-	}
-	return (0);
-}
-
-/*
- * Common implementation code for utimes(), lutimes(), and futimes().
- */
-static int
-setutimes(td, vp, ts, numtimes, nullflag)
-	struct thread *td;
-	struct vnode *vp;
-	const struct timespec *ts;
-	int numtimes;
-	int nullflag;
-{
-	int error, setbirthtime;
-	struct mount *mp;
-	struct vattr vattr;
-
-	if ((error = vn_start_write(vp, &mp, V_WAIT | PCATCH)) != 0)
-		return (error);
-	VOP_LEASE(vp, td, td->td_ucred, LEASE_WRITE);
-	vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td);
-	setbirthtime = 0;
-	if (numtimes < 3 && VOP_GETATTR(vp, &vattr, td->td_ucred, td) == 0 &&
-	    timespeccmp(&ts[1], &vattr.va_birthtime, < ))
-		setbirthtime = 1;
-	VATTR_NULL(&vattr);
-	vattr.va_atime = ts[0];
-	vattr.va_mtime = ts[1];
-	if (setbirthtime)
-		vattr.va_birthtime = ts[1];
-	if (numtimes > 2)
-		vattr.va_birthtime = ts[2];
-	if (nullflag)
-		vattr.va_vaflags |= VA_UTIMES_NULL;
-#ifdef MAC
-	error = mac_check_vnode_setutimes(td->td_ucred, vp, vattr.va_atime,
-	    vattr.va_mtime);
-#endif
-	if (error == 0)
-		error = VOP_SETATTR(vp, &vattr, td->td_ucred, td);
-	VOP_UNLOCK(vp, 0, td);
-	vn_finished_write(mp);
-	return (error);
-}
-
-/*
- * Set the access and modification times of a file.
- */
-#ifndef _SYS_SYSPROTO_H_
-struct utimes_args {
-	char	*path;
-	struct	timeval *tptr;
-};
-#endif
-int
-utimes(td, uap)
-	struct thread *td;
-	register struct utimes_args /* {
-		char *path;
-		struct timeval *tptr;
-	} */ *uap;
-{
-
-	return (kern_utimes(td, uap->path, UIO_USERSPACE, uap->tptr,
-	    UIO_USERSPACE));
-}
-
-int
-kern_utimes(struct thread *td, char *path, enum uio_seg pathseg,
-    struct timeval *tptr, enum uio_seg tptrseg)
-{
-	struct timespec ts[2];
-	int error;
-	struct nameidata nd;
-	int vfslocked;
-
-	if ((error = getutimes(tptr, tptrseg, ts)) != 0)
-		return (error);
-	NDINIT(&nd, LOOKUP, FOLLOW | MPSAFE | AUDITVNODE1, pathseg, path, td);
-	if ((error = namei(&nd)) != 0)
-		return (error);
-	vfslocked = NDHASGIANT(&nd);
-	NDFREE(&nd, NDF_ONLY_PNBUF);
-	error = setutimes(td, nd.ni_vp, ts, 2, tptr == NULL);
-	vrele(nd.ni_vp);
-	VFS_UNLOCK_GIANT(vfslocked);
-	return (error);
-}
-
-/*
- * Set the access and modification times of a file.
- */
-#ifndef _SYS_SYSPROTO_H_
-struct lutimes_args {
-	char	*path;
-	struct	timeval *tptr;
-};
-#endif
-int
-lutimes(td, uap)
-	struct thread *td;
-	register struct lutimes_args /* {
-		char *path;
-		struct timeval *tptr;
-	} */ *uap;
-{
-
-	return (kern_lutimes(td, uap->path, UIO_USERSPACE, uap->tptr,
-	    UIO_USERSPACE));
-}
-
-int
-kern_lutimes(struct thread *td, char *path, enum uio_seg pathseg,
-    struct timeval *tptr, enum uio_seg tptrseg)
-{
-	struct timespec ts[2];
-	int error;
-	struct nameidata nd;
-	int vfslocked;
-
-	if ((error = getutimes(tptr, tptrseg, ts)) != 0)
-		return (error);
-	NDINIT(&nd, LOOKUP, NOFOLLOW | MPSAFE | AUDITVNODE1, pathseg, path, td);
-	if ((error = namei(&nd)) != 0)
-		return (error);
-	vfslocked = NDHASGIANT(&nd);
-	NDFREE(&nd, NDF_ONLY_PNBUF);
-	error = setutimes(td, nd.ni_vp, ts, 2, tptr == NULL);
-	vrele(nd.ni_vp);
-	VFS_UNLOCK_GIANT(vfslocked);
-	return (error);
-}
-
-/*
- * Set the access and modification times of a file.
- */
-#ifndef _SYS_SYSPROTO_H_
-struct futimes_args {
-	int	fd;
-	struct	timeval *tptr;
-};
-#endif
-int
-futimes(td, uap)
-	struct thread *td;
-	register struct futimes_args /* {
-		int  fd;
-		struct timeval *tptr;
-	} */ *uap;
-{
-
-	return (kern_futimes(td, uap->fd, uap->tptr, UIO_USERSPACE));
-}
-
-int
-kern_futimes(struct thread *td, int fd, struct timeval *tptr,
-    enum uio_seg tptrseg)
-{
-	struct timespec ts[2];
-	struct file *fp;
-	int vfslocked;
-	int error;
-
-	AUDIT_ARG(fd, fd);
-	if ((error = getutimes(tptr, tptrseg, ts)) != 0)
-		return (error);
-	if ((error = getvnode(td->td_proc->p_fd, fd, &fp)) != 0)
-		return (error);
-	vfslocked = VFS_LOCK_GIANT(fp->f_vnode->v_mount);
-#ifdef AUDIT
-	vn_lock(fp->f_vnode, LK_EXCLUSIVE | LK_RETRY, td);
-	AUDIT_ARG(vnode, fp->f_vnode, ARG_VNODE1);
-	VOP_UNLOCK(fp->f_vnode, 0, td);
-#endif
-	error = setutimes(td, fp->f_vnode, ts, 2, tptr == NULL);
-	VFS_UNLOCK_GIANT(vfslocked);
-	fdrop(fp, td);
-	return (error);
-}
-
-/*
- * Truncate a file given its path name.
- */
-#ifndef _SYS_SYSPROTO_H_
-struct truncate_args {
-	char	*path;
-	int	pad;
-	off_t	length;
-};
-#endif
-int
-truncate(td, uap)
-	struct thread *td;
-	register struct truncate_args /* {
-		char *path;
-		int pad;
-		off_t length;
-	} */ *uap;
-{
-
-	return (kern_truncate(td, uap->path, UIO_USERSPACE, uap->length));
-}
-
-int
-kern_truncate(struct thread *td, char *path, enum uio_seg pathseg, off_t length)
-{
-	struct mount *mp;
-	struct vnode *vp;
-	struct vattr vattr;
-	int error;
-	struct nameidata nd;
-	int vfslocked;
-
-	if (length < 0)
-		return(EINVAL);
-	NDINIT(&nd, LOOKUP, FOLLOW | MPSAFE | AUDITVNODE1, pathseg, path, td);
-	if ((error = namei(&nd)) != 0)
-		return (error);
-	vfslocked = NDHASGIANT(&nd);
-	vp = nd.ni_vp;
-	if ((error = vn_start_write(vp, &mp, V_WAIT | PCATCH)) != 0) {
-		vrele(vp);
-		VFS_UNLOCK_GIANT(vfslocked);
-		return (error);
-	}
-	NDFREE(&nd, NDF_ONLY_PNBUF);
-	VOP_LEASE(vp, td, td->td_ucred, LEASE_WRITE);
-	vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td);
-	if (vp->v_type == VDIR)
-		error = EISDIR;
-#ifdef MAC
-	else if ((error = mac_check_vnode_write(td->td_ucred, NOCRED, vp))) {
-	}
-#endif
-	else if ((error = vn_writechk(vp)) == 0 &&
-	    (error = VOP_ACCESS(vp, VWRITE, td->td_ucred, td)) == 0) {
-		VATTR_NULL(&vattr);
-		vattr.va_size = length;
-		error = VOP_SETATTR(vp, &vattr, td->td_ucred, td);
-	}
-	vput(vp);
-	vn_finished_write(mp);
-	VFS_UNLOCK_GIANT(vfslocked);
-	return (error);
-}
-
-/*
- * Truncate a file given a file descriptor.
- */
-#ifndef _SYS_SYSPROTO_H_
-struct ftruncate_args {
-	int	fd;
-	int	pad;
-	off_t	length;
-};
-#endif
-int
-ftruncate(td, uap)
-	struct thread *td;
-	register struct ftruncate_args /* {
-		int fd;
-		int pad;
-		off_t length;
-	} */ *uap;
-{
-	struct mount *mp;
-	struct vattr vattr;
-	struct vnode *vp;
-	struct file *fp;
-	int vfslocked;
-	int error;
-
-	AUDIT_ARG(fd, uap->fd);
-	if (uap->length < 0)
-		return(EINVAL);
-	if ((error = getvnode(td->td_proc->p_fd, uap->fd, &fp)) != 0)
-		return (error);
-	if ((fp->f_flag & FWRITE) == 0) {
-		fdrop(fp, td);
-		return (EINVAL);
-	}
-	vp = fp->f_vnode;
-	vfslocked = VFS_LOCK_GIANT(vp->v_mount);
-	if ((error = vn_start_write(vp, &mp, V_WAIT | PCATCH)) != 0)
-		goto drop;
-	VOP_LEASE(vp, td, td->td_ucred, LEASE_WRITE);
-	vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td);
-	AUDIT_ARG(vnode, vp, ARG_VNODE1);
-	if (vp->v_type == VDIR)
-		error = EISDIR;
-#ifdef MAC
-	else if ((error = mac_check_vnode_write(td->td_ucred, fp->f_cred,
-	    vp))) {
-	}
-#endif
-	else if ((error = vn_writechk(vp)) == 0) {
-		VATTR_NULL(&vattr);
-		vattr.va_size = uap->length;
-		error = VOP_SETATTR(vp, &vattr, fp->f_cred, td);
-	}
-	VOP_UNLOCK(vp, 0, td);
-	vn_finished_write(mp);
-drop:
-	VFS_UNLOCK_GIANT(vfslocked);
-	fdrop(fp, td);
-	return (error);
-}
-
-#if defined(COMPAT_43)
-/*
- * Truncate a file given its path name.
- */
-#ifndef _SYS_SYSPROTO_H_
-struct otruncate_args {
-	char	*path;
-	long	length;
-};
-#endif
-int
-otruncate(td, uap)
-	struct thread *td;
-	register struct otruncate_args /* {
-		char *path;
-		long length;
-	} */ *uap;
-{
-	struct truncate_args /* {
-		char *path;
-		int pad;
-		off_t length;
-	} */ nuap;
-
-	nuap.path = uap->path;
-	nuap.length = uap->length;
-	return (truncate(td, &nuap));
-}
-
-/*
- * Truncate a file given a file descriptor.
- */
-#ifndef _SYS_SYSPROTO_H_
-struct oftruncate_args {
-	int	fd;
-	long	length;
-};
-#endif
-int
-oftruncate(td, uap)
-	struct thread *td;
-	register struct oftruncate_args /* {
-		int fd;
-		long length;
-	} */ *uap;
-{
-	struct ftruncate_args /* {
-		int fd;
-		int pad;
-		off_t length;
-	} */ nuap;
-
-	nuap.fd = uap->fd;
-	nuap.length = uap->length;
-	return (ftruncate(td, &nuap));
-}
-#endif /* COMPAT_43 */
-
-/*
- * Sync an open file.
- */
-#ifndef _SYS_SYSPROTO_H_
-struct fsync_args {
-	int	fd;
-};
-#endif
-int
-fsync(td, uap)
-	struct thread *td;
-	struct fsync_args /* {
-		int fd;
-	} */ *uap;
-{
-	struct vnode *vp;
-	struct mount *mp;
-	struct file *fp;
-	int vfslocked;
-	int error;
-
-	AUDIT_ARG(fd, uap->fd);
-	if ((error = getvnode(td->td_proc->p_fd, uap->fd, &fp)) != 0)
-		return (error);
-	vp = fp->f_vnode;
-	vfslocked = VFS_LOCK_GIANT(vp->v_mount);
-	if ((error = vn_start_write(vp, &mp, V_WAIT | PCATCH)) != 0)
-		goto drop;
-	vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td);
-	AUDIT_ARG(vnode, vp, ARG_VNODE1);
-	if (vp->v_object != NULL) {
-		VM_OBJECT_LOCK(vp->v_object);
-		vm_object_page_clean(vp->v_object, 0, 0, 0);
-		VM_OBJECT_UNLOCK(vp->v_object);
-	}
-	error = VOP_FSYNC(vp, MNT_WAIT, td);
-
-	VOP_UNLOCK(vp, 0, td);
-	vn_finished_write(mp);
-drop:
-	VFS_UNLOCK_GIANT(vfslocked);
-	fdrop(fp, td);
-	return (error);
-}
-
-/*
- * Rename files.  Source and destination must either both be directories,
- * or both not be directories.  If target is a directory, it must be empty.
- */
-#ifndef _SYS_SYSPROTO_H_
-struct rename_args {
-	char	*from;
-	char	*to;
-};
-#endif
-int
-rename(td, uap)
-	struct thread *td;
-	register struct rename_args /* {
-		char *from;
-		char *to;
-	} */ *uap;
-{
-
-	return (kern_rename(td, uap->from, uap->to, UIO_USERSPACE));
-}
-
-int
-kern_rename(struct thread *td, char *from, char *to, enum uio_seg pathseg)
-{
-	struct mount *mp = NULL;
-	struct vnode *tvp, *fvp, *tdvp;
-	struct nameidata fromnd, tond;
-	int tvfslocked;
-	int fvfslocked;
-	int error;
-
-	bwillwrite();
-#ifdef MAC
-	NDINIT(&fromnd, DELETE, LOCKPARENT | LOCKLEAF | SAVESTART | MPSAFE |
-	    AUDITVNODE1, pathseg, from, td);
-#else
-	NDINIT(&fromnd, DELETE, WANTPARENT | SAVESTART | MPSAFE |
-	    AUDITVNODE1, pathseg, from, td);
-#endif
-	if ((error = namei(&fromnd)) != 0)
-		return (error);
-	fvfslocked = NDHASGIANT(&fromnd);
-	tvfslocked = 0;
-#ifdef MAC
-	error = mac_check_vnode_rename_from(td->td_ucred, fromnd.ni_dvp,
-	    fromnd.ni_vp, &fromnd.ni_cnd);
-	VOP_UNLOCK(fromnd.ni_dvp, 0, td);
-	if (fromnd.ni_dvp != fromnd.ni_vp)
-		VOP_UNLOCK(fromnd.ni_vp, 0, td);
-#endif
-	fvp = fromnd.ni_vp;
-	if (error == 0)
-		error = vn_start_write(fvp, &mp, V_WAIT | PCATCH);
-	if (error != 0) {
-		NDFREE(&fromnd, NDF_ONLY_PNBUF);
-		vrele(fromnd.ni_dvp);
-		vrele(fvp);
-		goto out1;
-	}
-	NDINIT(&tond, RENAME, LOCKPARENT | LOCKLEAF | NOCACHE | SAVESTART |
-	    MPSAFE | AUDITVNODE2, pathseg, to, td);
-	if (fromnd.ni_vp->v_type == VDIR)
-		tond.ni_cnd.cn_flags |= WILLBEDIR;
-	if ((error = namei(&tond)) != 0) {
-		/* Translate error code for rename("dir1", "dir2/."). */
-		if (error == EISDIR && fvp->v_type == VDIR)
-			error = EINVAL;
-		NDFREE(&fromnd, NDF_ONLY_PNBUF);
-		vrele(fromnd.ni_dvp);
-		vrele(fvp);
-		vn_finished_write(mp);
-		goto out1;
-	}
-	tvfslocked = NDHASGIANT(&tond);
-	tdvp = tond.ni_dvp;
-	tvp = tond.ni_vp;
-	if (tvp != NULL) {
-		if (fvp->v_type == VDIR && tvp->v_type != VDIR) {
-			error = ENOTDIR;
-			goto out;
-		} else if (fvp->v_type != VDIR && tvp->v_type == VDIR) {
-			error = EISDIR;
-			goto out;
-		}
-	}
-	if (fvp == tdvp)
-		error = EINVAL;
-	/*
-	 * If the source is the same as the destination (that is, if they
-	 * are links to the same vnode), then there is nothing to do.
-	 */
-	if (fvp == tvp)
-		error = -1;
-#ifdef MAC
-	else
-		error = mac_check_vnode_rename_to(td->td_ucred, tdvp,
-		    tond.ni_vp, fromnd.ni_dvp == tdvp, &tond.ni_cnd);
-#endif
-out:
-	if (!error) {
-		VOP_LEASE(tdvp, td, td->td_ucred, LEASE_WRITE);
-		if (fromnd.ni_dvp != tdvp) {
-			VOP_LEASE(fromnd.ni_dvp, td, td->td_ucred, LEASE_WRITE);
-		}
-		if (tvp) {
-			VOP_LEASE(tvp, td, td->td_ucred, LEASE_WRITE);
-		}
-		error = VOP_RENAME(fromnd.ni_dvp, fromnd.ni_vp, &fromnd.ni_cnd,
-				   tond.ni_dvp, tond.ni_vp, &tond.ni_cnd);
-		NDFREE(&fromnd, NDF_ONLY_PNBUF);
-		NDFREE(&tond, NDF_ONLY_PNBUF);
-	} else {
-		NDFREE(&fromnd, NDF_ONLY_PNBUF);
-		NDFREE(&tond, NDF_ONLY_PNBUF);
-		if (tvp)
-			vput(tvp);
-		if (tdvp == tvp)
-			vrele(tdvp);
-		else
-			vput(tdvp);
-		vrele(fromnd.ni_dvp);
-		vrele(fvp);
-	}
-	vrele(tond.ni_startdir);
-	vn_finished_write(mp);
-out1:
-	if (fromnd.ni_startdir)
-		vrele(fromnd.ni_startdir);
-	VFS_UNLOCK_GIANT(fvfslocked);
-	VFS_UNLOCK_GIANT(tvfslocked);
-	if (error == -1)
-		return (0);
-	return (error);
-}
-
-/*
- * Make a directory file.
- */
-#ifndef _SYS_SYSPROTO_H_
-struct mkdir_args {
-	char	*path;
-	int	mode;
-};
-#endif
-int
-mkdir(td, uap)
-	struct thread *td;
-	register struct mkdir_args /* {
-		char *path;
-		int mode;
-	} */ *uap;
-{
-
-	return (kern_mkdir(td, uap->path, UIO_USERSPACE, uap->mode));
-}
-
-int
-kern_mkdir(struct thread *td, char *path, enum uio_seg segflg, int mode)
-{
-	struct mount *mp;
-	struct vnode *vp;
-	struct vattr vattr;
-	int error;
-	struct nameidata nd;
-	int vfslocked;
-
-	AUDIT_ARG(mode, mode);
-restart:
-	bwillwrite();
-	NDINIT(&nd, CREATE, LOCKPARENT | SAVENAME | MPSAFE | AUDITVNODE1,
-	    segflg, path, td);
-	nd.ni_cnd.cn_flags |= WILLBEDIR;
-	if ((error = namei(&nd)) != 0)
-		return (error);
-	vfslocked = NDHASGIANT(&nd);
-	vp = nd.ni_vp;
-	if (vp != NULL) {
-		NDFREE(&nd, NDF_ONLY_PNBUF);
-		/*
-		 * XXX namei called with LOCKPARENT but not LOCKLEAF has
-		 * the strange behaviour of leaving the vnode unlocked
-		 * if the target is the same vnode as the parent.
-		 */
-		if (vp == nd.ni_dvp)
-			vrele(nd.ni_dvp);
-		else
-			vput(nd.ni_dvp);
-		vrele(vp);
-		VFS_UNLOCK_GIANT(vfslocked);
-		return (EEXIST);
-	}
-	if (vn_start_write(nd.ni_dvp, &mp, V_NOWAIT) != 0) {
-		NDFREE(&nd, NDF_ONLY_PNBUF);
-		vput(nd.ni_dvp);
-		VFS_UNLOCK_GIANT(vfslocked);
-		if ((error = vn_start_write(NULL, &mp, V_XSLEEP | PCATCH)) != 0)
-			return (error);
-		goto restart;
-	}
-	VATTR_NULL(&vattr);
-	vattr.va_type = VDIR;
-	FILEDESC_LOCK_FAST(td->td_proc->p_fd);
-	vattr.va_mode = (mode & ACCESSPERMS) &~ td->td_proc->p_fd->fd_cmask;
-	FILEDESC_UNLOCK_FAST(td->td_proc->p_fd);
-#ifdef MAC
-	error = mac_check_vnode_create(td->td_ucred, nd.ni_dvp, &nd.ni_cnd,
-	    &vattr);
-	if (error)
-		goto out;
-#endif
-	VOP_LEASE(nd.ni_dvp, td, td->td_ucred, LEASE_WRITE);
-	error = VOP_MKDIR(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, &vattr);
-#ifdef MAC
-out:
-#endif
-	NDFREE(&nd, NDF_ONLY_PNBUF);
-	vput(nd.ni_dvp);
-	if (!error)
-		vput(nd.ni_vp);
-	vn_finished_write(mp);
-	VFS_UNLOCK_GIANT(vfslocked);
-	return (error);
-}
-
-/*
- * Remove a directory file.
- */
-#ifndef _SYS_SYSPROTO_H_
-struct rmdir_args {
-	char	*path;
-};
-#endif
-int
-rmdir(td, uap)
-	struct thread *td;
-	struct rmdir_args /* {
-		char *path;
-	} */ *uap;
-{
-
-	return (kern_rmdir(td, uap->path, UIO_USERSPACE));
-}
-
-int
-kern_rmdir(struct thread *td, char *path, enum uio_seg pathseg)
-{
-	struct mount *mp;
-	struct vnode *vp;
-	int error;
-	struct nameidata nd;
-	int vfslocked;
-
-restart:
-	bwillwrite();
-	NDINIT(&nd, DELETE, LOCKPARENT | LOCKLEAF | MPSAFE | AUDITVNODE1,
-	    pathseg, path, td);
-	if ((error = namei(&nd)) != 0)
-		return (error);
-	vfslocked = NDHASGIANT(&nd);
-	vp = nd.ni_vp;
-	if (vp->v_type != VDIR) {
-		error = ENOTDIR;
-		goto out;
-	}
-	/*
-	 * No rmdir "." please.
-	 */
-	if (nd.ni_dvp == vp) {
-		error = EINVAL;
-		goto out;
-	}
-	/*
-	 * The root of a mounted filesystem cannot be deleted.
-	 */
-	if (vp->v_vflag & VV_ROOT) {
-		error = EBUSY;
-		goto out;
-	}
-#ifdef MAC
-	error = mac_check_vnode_delete(td->td_ucred, nd.ni_dvp, vp,
-	    &nd.ni_cnd);
-	if (error)
-		goto out;
-#endif
-	if (vn_start_write(nd.ni_dvp, &mp, V_NOWAIT) != 0) {
-		NDFREE(&nd, NDF_ONLY_PNBUF);
-		vput(vp);
-		if (nd.ni_dvp == vp)
-			vrele(nd.ni_dvp);
-		else
-			vput(nd.ni_dvp);
-		VFS_UNLOCK_GIANT(vfslocked);
-		if ((error = vn_start_write(NULL, &mp, V_XSLEEP | PCATCH)) != 0)
-			return (error);
-		goto restart;
-	}
-	VOP_LEASE(nd.ni_dvp, td, td->td_ucred, LEASE_WRITE);
-	VOP_LEASE(vp, td, td->td_ucred, LEASE_WRITE);
-	error = VOP_RMDIR(nd.ni_dvp, nd.ni_vp, &nd.ni_cnd);
-	vn_finished_write(mp);
-out:
-	NDFREE(&nd, NDF_ONLY_PNBUF);
-	vput(vp);
-	if (nd.ni_dvp == vp)
-		vrele(nd.ni_dvp);
-	else
-		vput(nd.ni_dvp);
-	VFS_UNLOCK_GIANT(vfslocked);
-	return (error);
-}
-
-#ifdef COMPAT_43
-/*
- * Read a block of directory entries in a filesystem independent format.
- */
-#ifndef _SYS_SYSPROTO_H_
-struct ogetdirentries_args {
-	int	fd;
-	char	*buf;
-	u_int	count;
-	long	*basep;
-};
-#endif
-int
-ogetdirentries(td, uap)
-	struct thread *td;
-	register struct ogetdirentries_args /* {
-		int fd;
-		char *buf;
-		u_int count;
-		long *basep;
-	} */ *uap;
-{
-	struct vnode *vp;
-	struct file *fp;
-	struct uio auio, kuio;
-	struct iovec aiov, kiov;
-	struct dirent *dp, *edp;
-	caddr_t dirbuf;
-	int error, eofflag, readcnt, vfslocked;
-	long loff;
-
-	/* XXX arbitrary sanity limit on `count'. */
-	if (uap->count > 64 * 1024)
-		return (EINVAL);
-	if ((error = getvnode(td->td_proc->p_fd, uap->fd, &fp)) != 0)
-		return (error);
-	if ((fp->f_flag & FREAD) == 0) {
-		fdrop(fp, td);
-		return (EBADF);
-	}
-	vp = fp->f_vnode;
-unionread:
-	vfslocked = VFS_LOCK_GIANT(vp->v_mount);
-	if (vp->v_type != VDIR) {
-		VFS_UNLOCK_GIANT(vfslocked);
-		fdrop(fp, td);
-		return (EINVAL);
-	}
-	aiov.iov_base = uap->buf;
-	aiov.iov_len = uap->count;
-	auio.uio_iov = &aiov;
-	auio.uio_iovcnt = 1;
-	auio.uio_rw = UIO_READ;
-	auio.uio_segflg = UIO_USERSPACE;
-	auio.uio_td = td;
-	auio.uio_resid = uap->count;
-	vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td);
-	loff = auio.uio_offset = fp->f_offset;
-#ifdef MAC
-	error = mac_check_vnode_readdir(td->td_ucred, vp);
-	if (error) {
-		VOP_UNLOCK(vp, 0, td);
-		VFS_UNLOCK_GIANT(vfslocked);
-		fdrop(fp, td);
-		return (error);
-	}
-#endif
-#	if (BYTE_ORDER != LITTLE_ENDIAN)
-		if (vp->v_mount->mnt_maxsymlinklen <= 0) {
-			error = VOP_READDIR(vp, &auio, fp->f_cred, &eofflag,
-			    NULL, NULL);
-			fp->f_offset = auio.uio_offset;
-		} else
-#	endif
-	{
-		kuio = auio;
-		kuio.uio_iov = &kiov;
-		kuio.uio_segflg = UIO_SYSSPACE;
-		kiov.iov_len = uap->count;
-		MALLOC(dirbuf, caddr_t, uap->count, M_TEMP, M_WAITOK);
-		kiov.iov_base = dirbuf;
-		error = VOP_READDIR(vp, &kuio, fp->f_cred, &eofflag,
-			    NULL, NULL);
-		fp->f_offset = kuio.uio_offset;
-		if (error == 0) {
-			readcnt = uap->count - kuio.uio_resid;
-			edp = (struct dirent *)&dirbuf[readcnt];
-			for (dp = (struct dirent *)dirbuf; dp < edp; ) {
-#				if (BYTE_ORDER == LITTLE_ENDIAN)
-					/*
-					 * The expected low byte of
-					 * dp->d_namlen is our dp->d_type.
-					 * The high MBZ byte of dp->d_namlen
-					 * is our dp->d_namlen.
-					 */
-					dp->d_type = dp->d_namlen;
-					dp->d_namlen = 0;
-#				else
-					/*
-					 * The dp->d_type is the high byte
-					 * of the expected dp->d_namlen,
-					 * so must be zero'ed.
-					 */
-					dp->d_type = 0;
-#				endif
-				if (dp->d_reclen > 0) {
-					dp = (struct dirent *)
-					    ((char *)dp + dp->d_reclen);
-				} else {
-					error = EIO;
-					break;
-				}
-			}
-			if (dp >= edp)
-				error = uiomove(dirbuf, readcnt, &auio);
-		}
-		FREE(dirbuf, M_TEMP);
-	}
-	VOP_UNLOCK(vp, 0, td);
-	if (error) {
-		VFS_UNLOCK_GIANT(vfslocked);
-		fdrop(fp, td);
-		return (error);
-	}
-	if (uap->count == auio.uio_resid) {
-		if (union_dircheckp) {
-			error = union_dircheckp(td, &vp, fp);
-			if (error == -1) {
-				VFS_UNLOCK_GIANT(vfslocked);
-				goto unionread;
-			}
-			if (error) {
-				VFS_UNLOCK_GIANT(vfslocked);
-				fdrop(fp, td);
-				return (error);
-			}
-		}
-		/*
-		 * XXX We could delay dropping the lock above but
-		 * union_dircheckp complicates things.
-		 */
-		vn_lock(vp, LK_EXCLUSIVE|LK_RETRY, td);
-		if ((vp->v_vflag & VV_ROOT) &&
-		    (vp->v_mount->mnt_flag & MNT_UNION)) {
-			struct vnode *tvp = vp;
-			vp = vp->v_mount->mnt_vnodecovered;
-			VREF(vp);
-			fp->f_vnode = vp;
-			fp->f_data = vp;
-			fp->f_offset = 0;
-			vput(tvp);
-			VFS_UNLOCK_GIANT(vfslocked);
-			goto unionread;
-		}
-		VOP_UNLOCK(vp, 0, td);
-	}
-	VFS_UNLOCK_GIANT(vfslocked);
-	error = copyout(&loff, uap->basep, sizeof(long));
-	fdrop(fp, td);
-	td->td_retval[0] = uap->count - auio.uio_resid;
-	return (error);
-}
-#endif /* COMPAT_43 */
-
-/*
- * Read a block of directory entries in a filesystem independent format.
- */
-#ifndef _SYS_SYSPROTO_H_
-struct getdirentries_args {
-	int	fd;
-	char	*buf;
-	u_int	count;
-	long	*basep;
-};
-#endif
-int
-getdirentries(td, uap)
-	struct thread *td;
-	register struct getdirentries_args /* {
-		int fd;
-		char *buf;
-		u_int count;
-		long *basep;
-	} */ *uap;
-{
-	struct vnode *vp;
-	struct file *fp;
-	struct uio auio;
-	struct iovec aiov;
-	int vfslocked;
-	long loff;
-	int error, eofflag;
-
-	AUDIT_ARG(fd, uap->fd);
-	if ((error = getvnode(td->td_proc->p_fd, uap->fd, &fp)) != 0)
-		return (error);
-	if ((fp->f_flag & FREAD) == 0) {
-		fdrop(fp, td);
-		return (EBADF);
-	}
-	vp = fp->f_vnode;
-unionread:
-	vfslocked = VFS_LOCK_GIANT(vp->v_mount);
-	if (vp->v_type != VDIR) {
-		error = EINVAL;
-		goto fail;
-	}
-	aiov.iov_base = uap->buf;
-	aiov.iov_len = uap->count;
-	auio.uio_iov = &aiov;
-	auio.uio_iovcnt = 1;
-	auio.uio_rw = UIO_READ;
-	auio.uio_segflg = UIO_USERSPACE;
-	auio.uio_td = td;
-	auio.uio_resid = uap->count;
-	/* vn_lock(vp, LK_SHARED | LK_RETRY, td); */
-	vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td);
-	AUDIT_ARG(vnode, vp, ARG_VNODE1);
-	loff = auio.uio_offset = fp->f_offset;
-#ifdef MAC
-	error = mac_check_vnode_readdir(td->td_ucred, vp);
-	if (error == 0)
-#endif
-		error = VOP_READDIR(vp, &auio, fp->f_cred, &eofflag, NULL,
-		    NULL);
-	fp->f_offset = auio.uio_offset;
-	VOP_UNLOCK(vp, 0, td);
-	if (error)
-		goto fail;
-	if (uap->count == auio.uio_resid) {
-		if (union_dircheckp) {
-			error = union_dircheckp(td, &vp, fp);
-			if (error == -1) {
-				VFS_UNLOCK_GIANT(vfslocked);
-				goto unionread;
-			}
-			if (error)
-				goto fail;
-		}
-		/*
-		 * XXX We could delay dropping the lock above but
-		 * union_dircheckp complicates things.
-		 */
-		vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td);
-		if ((vp->v_vflag & VV_ROOT) &&
-		    (vp->v_mount->mnt_flag & MNT_UNION)) {
-			struct vnode *tvp = vp;
-			vp = vp->v_mount->mnt_vnodecovered;
-			VREF(vp);
-			fp->f_vnode = vp;
-			fp->f_data = vp;
-			fp->f_offset = 0;
-			vput(tvp);
-			VFS_UNLOCK_GIANT(vfslocked);
-			goto unionread;
-		}
-		VOP_UNLOCK(vp, 0, td);
-	}
-	if (uap->basep != NULL) {
-		error = copyout(&loff, uap->basep, sizeof(long));
-	}
-	td->td_retval[0] = uap->count - auio.uio_resid;
-fail:
-	VFS_UNLOCK_GIANT(vfslocked);
-	fdrop(fp, td);
-	return (error);
-}
-#ifndef _SYS_SYSPROTO_H_
-struct getdents_args {
-	int fd;
-	char *buf;
-	size_t count;
-};
-#endif
-int
-getdents(td, uap)
-	struct thread *td;
-	register struct getdents_args /* {
-		int fd;
-		char *buf;
-		u_int count;
-	} */ *uap;
-{
-	struct getdirentries_args ap;
-	ap.fd = uap->fd;
-	ap.buf = uap->buf;
-	ap.count = uap->count;
-	ap.basep = NULL;
-	return (getdirentries(td, &ap));
-}
-
-/*
- * Set the mode mask for creation of filesystem nodes.
- *
- * MP SAFE
- */
-#ifndef _SYS_SYSPROTO_H_
-struct umask_args {
-	int	newmask;
-};
-#endif
-int
-umask(td, uap)
-	struct thread *td;
-	struct umask_args /* {
-		int newmask;
-	} */ *uap;
-{
-	register struct filedesc *fdp;
-
-	FILEDESC_LOCK_FAST(td->td_proc->p_fd);
-	fdp = td->td_proc->p_fd;
-	td->td_retval[0] = fdp->fd_cmask;
-	fdp->fd_cmask = uap->newmask & ALLPERMS;
-	FILEDESC_UNLOCK_FAST(td->td_proc->p_fd);
-	return (0);
-}
-
-/*
- * Void all references to file by ripping underlying filesystem
- * away from vnode.
- */
-#ifndef _SYS_SYSPROTO_H_
-struct revoke_args {
-	char	*path;
-};
-#endif
-int
-revoke(td, uap)
-	struct thread *td;
-	register struct revoke_args /* {
-		char *path;
-	} */ *uap;
-{
-	struct vnode *vp;
-	struct vattr vattr;
-	int error;
-	struct nameidata nd;
-	int vfslocked;
-
-	NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF | MPSAFE | AUDITVNODE1,
-	    UIO_USERSPACE, uap->path, td);
-	if ((error = namei(&nd)) != 0)
-		return (error);
-	vfslocked = NDHASGIANT(&nd);
-	vp = nd.ni_vp;
-	NDFREE(&nd, NDF_ONLY_PNBUF);
-	if (vp->v_type != VCHR) {
-		error = EINVAL;
-		goto out;
-	}
-#ifdef MAC
-	error = mac_check_vnode_revoke(td->td_ucred, vp);
-	if (error)
-		goto out;
-#endif
-	error = VOP_GETATTR(vp, &vattr, td->td_ucred, td);
-	if (error)
-		goto out;
-	if (td->td_ucred->cr_uid != vattr.va_uid) {
-		error = priv_check_cred(td->td_ucred, PRIV_VFS_ADMIN,
-		    SUSER_ALLOWJAIL);
-		if (error)
-			goto out;
-	}
-	if (vcount(vp) > 1)
-		VOP_REVOKE(vp, REVOKEALL);
-out:
-	vput(vp);
-	VFS_UNLOCK_GIANT(vfslocked);
-	return (error);
-}
-
-/*
- * Convert a user file descriptor to a kernel file entry.
- * A reference on the file entry is held upon returning.
- */
-int
-getvnode(fdp, fd, fpp)
-	struct filedesc *fdp;
-	int fd;
-	struct file **fpp;
-{
-	int error;
-	struct file *fp;
-
-	fp = NULL;
-	if (fdp == NULL)
-		error = EBADF;
-	else {
-		FILEDESC_LOCK(fdp);
-		if ((u_int)fd >= fdp->fd_nfiles ||
-		    (fp = fdp->fd_ofiles[fd]) == NULL)
-			error = EBADF;
-		else if (fp->f_vnode == NULL) {
-			fp = NULL;
-			error = EINVAL;
-		} else {
-			fhold(fp);
-			error = 0;
-		}
-		FILEDESC_UNLOCK(fdp);
-	}
-	*fpp = fp;
-	return (error);
-}
-
-/*
- * Get (NFS) file handle
- */
-#ifndef _SYS_SYSPROTO_H_
-struct lgetfh_args {
-	char	*fname;
-	fhandle_t *fhp;
-};
-#endif
-int
-lgetfh(td, uap)
-	struct thread *td;
-	register struct lgetfh_args *uap;
-{
-	struct nameidata nd;
-	fhandle_t fh;
-	register struct vnode *vp;
-	int vfslocked;
-	int error;
-
-	error = priv_check(td, PRIV_VFS_GETFH);
-	if (error)
-		return (error);
-	NDINIT(&nd, LOOKUP, NOFOLLOW | LOCKLEAF | MPSAFE | AUDITVNODE1,
-	    UIO_USERSPACE, uap->fname, td);
-	error = namei(&nd);
-	if (error)
-		return (error);
-	vfslocked = NDHASGIANT(&nd);
-	NDFREE(&nd, NDF_ONLY_PNBUF);
-	vp = nd.ni_vp;
-	bzero(&fh, sizeof(fh));
-	fh.fh_fsid = vp->v_mount->mnt_stat.f_fsid;
-	error = VFS_VPTOFH(vp, &fh.fh_fid);
-	vput(vp);
-	VFS_UNLOCK_GIANT(vfslocked);
-	if (error)
-		return (error);
-	error = copyout(&fh, uap->fhp, sizeof (fh));
-	return (error);
-}
-
-#ifndef _SYS_SYSPROTO_H_
-struct getfh_args {
-	char	*fname;
-	fhandle_t *fhp;
-};
-#endif
-int
-getfh(td, uap)
-	struct thread *td;
-	register struct getfh_args *uap;
-{
-	struct nameidata nd;
-	fhandle_t fh;
-	register struct vnode *vp;
-	int vfslocked;
-	int error;
-
-	error = priv_check(td, PRIV_VFS_GETFH);
-	if (error)
-		return (error);
-	NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF | MPSAFE | AUDITVNODE1,
-	    UIO_USERSPACE, uap->fname, td);
-	error = namei(&nd);
-	if (error)
-		return (error);
-	vfslocked = NDHASGIANT(&nd);
-	NDFREE(&nd, NDF_ONLY_PNBUF);
-	vp = nd.ni_vp;
-	bzero(&fh, sizeof(fh));
-	fh.fh_fsid = vp->v_mount->mnt_stat.f_fsid;
-	error = VFS_VPTOFH(vp, &fh.fh_fid);
-	vput(vp);
-	VFS_UNLOCK_GIANT(vfslocked);
-	if (error)
-		return (error);
-	error = copyout(&fh, uap->fhp, sizeof (fh));
-	return (error);
-}
-
-/*
- * syscall for the rpc.lockd to use to translate a NFS file handle into an
- * open descriptor.
- *
- * warning: do not remove the priv_check() call or this becomes one giant
- * security hole.
- *
- * MP SAFE
- */
-#ifndef _SYS_SYSPROTO_H_
-struct fhopen_args {
-	const struct fhandle *u_fhp;
-	int flags;
-};
-#endif
-int
-fhopen(td, uap)
-	struct thread *td;
-	struct fhopen_args /* {
-		const struct fhandle *u_fhp;
-		int flags;
-	} */ *uap;
-{
-	struct proc *p = td->td_proc;
-	struct mount *mp;
-	struct vnode *vp;
-	struct fhandle fhp;
-	struct vattr vat;
-	struct vattr *vap = &vat;
-	struct flock lf;
-	struct file *fp;
-	register struct filedesc *fdp = p->p_fd;
-	int fmode, mode, error, type;
-	struct file *nfp;
-	int vfslocked;
-	int indx;
-
-	error = priv_check(td, PRIV_VFS_FHOPEN);
-	if (error)
-		return (error);
-	fmode = FFLAGS(uap->flags);
-	/* why not allow a non-read/write open for our lockd? */
-	if (((fmode & (FREAD | FWRITE)) == 0) || (fmode & O_CREAT))
-		return (EINVAL);
-	error = copyin(uap->u_fhp, &fhp, sizeof(fhp));
-	if (error)
-		return(error);
-	/* find the mount point */
-	mp = vfs_getvfs(&fhp.fh_fsid);
-	if (mp == NULL)
-		return (ESTALE);
-	vfslocked = VFS_LOCK_GIANT(mp);
-	/* now give me my vnode, it gets returned to me locked */
-	error = VFS_FHTOVP(mp, &fhp.fh_fid, &vp);
-	if (error)
-		goto out;
-	/*
-	 * from now on we have to make sure not
-	 * to forget about the vnode
-	 * any error that causes an abort must vput(vp)
-	 * just set error = err and 'goto bad;'.
-	 */
-
-	/*
-	 * from vn_open
-	 */
-	if (vp->v_type == VLNK) {
-		error = EMLINK;
-		goto bad;
-	}
-	if (vp->v_type == VSOCK) {
-		error = EOPNOTSUPP;
-		goto bad;
-	}
-	mode = 0;
-	if (fmode & (FWRITE | O_TRUNC)) {
-		if (vp->v_type == VDIR) {
-			error = EISDIR;
-			goto bad;
-		}
-		error = vn_writechk(vp);
-		if (error)
-			goto bad;
-		mode |= VWRITE;
-	}
-	if (fmode & FREAD)
-		mode |= VREAD;
-	if (fmode & O_APPEND)
-		mode |= VAPPEND;
-#ifdef MAC
-	error = mac_check_vnode_open(td->td_ucred, vp, mode);
-	if (error)
-		goto bad;
-#endif
-	if (mode) {
-		error = VOP_ACCESS(vp, mode, td->td_ucred, td);
-		if (error)
-			goto bad;
-	}
-	if (fmode & O_TRUNC) {
-		VOP_UNLOCK(vp, 0, td);				/* XXX */
-		if ((error = vn_start_write(NULL, &mp, V_WAIT | PCATCH)) != 0) {
-			vrele(vp);
-			goto out;
-		}
-		VOP_LEASE(vp, td, td->td_ucred, LEASE_WRITE);
-		vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td);	/* XXX */
-#ifdef MAC
-		/*
-		 * We don't yet have fp->f_cred, so use td->td_ucred, which
-		 * should be right.
-		 */
-		error = mac_check_vnode_write(td->td_ucred, td->td_ucred, vp);
-		if (error == 0) {
-#endif
-			VATTR_NULL(vap);
-			vap->va_size = 0;
-			error = VOP_SETATTR(vp, vap, td->td_ucred, td);
-#ifdef MAC
-		}
-#endif
-		vn_finished_write(mp);
-		if (error)
-			goto bad;
-	}
-	error = VOP_OPEN(vp, fmode, td->td_ucred, td, -1);
-	if (error)
-		goto bad;
-
-	if (fmode & FWRITE)
-		vp->v_writecount++;
-
-	/*
-	 * end of vn_open code
-	 */
-
-	if ((error = falloc(td, &nfp, &indx)) != 0) {
-		if (fmode & FWRITE)
-			vp->v_writecount--;
-		goto bad;
-	}
-	/* An extra reference on `nfp' has been held for us by falloc(). */
-	fp = nfp;
-
-	nfp->f_vnode = vp;
-	nfp->f_data = vp;
-	nfp->f_flag = fmode & FMASK;
-	nfp->f_ops = &vnops;
-	nfp->f_type = DTYPE_VNODE;
-	if (fmode & (O_EXLOCK | O_SHLOCK)) {
-		lf.l_whence = SEEK_SET;
-		lf.l_start = 0;
-		lf.l_len = 0;
-		if (fmode & O_EXLOCK)
-			lf.l_type = F_WRLCK;
-		else
-			lf.l_type = F_RDLCK;
-		type = F_FLOCK;
-		if ((fmode & FNONBLOCK) == 0)
-			type |= F_WAIT;
-		VOP_UNLOCK(vp, 0, td);
-		if ((error = VOP_ADVLOCK(vp, (caddr_t)fp, F_SETLK, &lf,
-			    type)) != 0) {
-			/*
-			 * The lock request failed.  Normally close the
-			 * descriptor but handle the case where someone might
-			 * have dup()d or close()d it when we weren't looking.
-			 */
-			fdclose(fdp, fp, indx, td);
-
-			/*
-			 * release our private reference
-			 */
-			fdrop(fp, td);
-			goto out;
-		}
-		vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td);
-		fp->f_flag |= FHASLOCK;
-	}
-
-	VOP_UNLOCK(vp, 0, td);
-	fdrop(fp, td);
-	vfs_rel(mp);
-	VFS_UNLOCK_GIANT(vfslocked);
-	td->td_retval[0] = indx;
-	return (0);
-
-bad:
-	vput(vp);
-out:
-	vfs_rel(mp);
-	VFS_UNLOCK_GIANT(vfslocked);
-	return (error);
-}
-
-/*
- * Stat an (NFS) file handle.
- *
- * MP SAFE
- */
-#ifndef _SYS_SYSPROTO_H_
-struct fhstat_args {
-	struct fhandle *u_fhp;
-	struct stat *sb;
-};
-#endif
-int
-fhstat(td, uap)
-	struct thread *td;
-	register struct fhstat_args /* {
-		struct fhandle *u_fhp;
-		struct stat *sb;
-	} */ *uap;
-{
-	struct stat sb;
-	fhandle_t fh;
-	struct mount *mp;
-	struct vnode *vp;
-	int vfslocked;
-	int error;
-
-	error = priv_check(td, PRIV_VFS_FHSTAT);
-	if (error)
-		return (error);
-	error = copyin(uap->u_fhp, &fh, sizeof(fhandle_t));
-	if (error)
-		return (error);
-	if ((mp = vfs_getvfs(&fh.fh_fsid)) == NULL)
-		return (ESTALE);
-	vfslocked = VFS_LOCK_GIANT(mp);
-	if ((error = VFS_FHTOVP(mp, &fh.fh_fid, &vp))) {
-		vfs_rel(mp);
-		VFS_UNLOCK_GIANT(vfslocked);
-		return (error);
-	}
-	error = vn_stat(vp, &sb, td->td_ucred, NOCRED, td);
-	vput(vp);
-	vfs_rel(mp);
-	VFS_UNLOCK_GIANT(vfslocked);
-	if (error)
-		return (error);
-	error = copyout(&sb, uap->sb, sizeof(sb));
-	return (error);
-}
-
-/*
- * Implement fstatfs() for (NFS) file handles.
- *
- * MP SAFE
- */
-#ifndef _SYS_SYSPROTO_H_
-struct fhstatfs_args {
-	struct fhandle *u_fhp;
-	struct statfs *buf;
-};
-#endif
-int
-fhstatfs(td, uap)
-	struct thread *td;
-	struct fhstatfs_args /* {
-		struct fhandle *u_fhp;
-		struct statfs *buf;
-	} */ *uap;
-{
-	struct statfs sf;
-	fhandle_t fh;
-	int error;
-
-	error = copyin(uap->u_fhp, &fh, sizeof(fhandle_t));
-	if (error)
-		return (error);
-	error = kern_fhstatfs(td, fh, &sf);
-	if (error)
-		return (error);
-	return (copyout(&sf, uap->buf, sizeof(sf)));
-}
-
-int
-kern_fhstatfs(struct thread *td, fhandle_t fh, struct statfs *buf)
-{
-	struct statfs *sp;
-	struct mount *mp;
-	struct vnode *vp;
-	int vfslocked;
-	int error;
-
-	error = priv_check(td, PRIV_VFS_FHSTATFS);
-	if (error)
-		return (error);
-	if ((mp = vfs_getvfs(&fh.fh_fsid)) == NULL)
-		return (ESTALE);
-	vfslocked = VFS_LOCK_GIANT(mp);
-	error = VFS_FHTOVP(mp, &fh.fh_fid, &vp);
-	if (error) {
-		VFS_UNLOCK_GIANT(vfslocked);
-		vfs_rel(mp);
-		return (error);
-	}
-	vput(vp);
-	error = prison_canseemount(td->td_ucred, mp);
-	if (error)
-		goto out;
-#ifdef MAC
-	error = mac_check_mount_stat(td->td_ucred, mp);
-	if (error)
-		goto out;
-#endif
-	/*
-	 * Set these in case the underlying filesystem fails to do so.
-	 */
-	sp = &mp->mnt_stat;
-	sp->f_version = STATFS_VERSION;
-	sp->f_namemax = NAME_MAX;
-	sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK;
-	error = VFS_STATFS(mp, sp, td);
-	if (error == 0)
-		*buf = *sp;
-out:
-	vfs_rel(mp);
-	VFS_UNLOCK_GIANT(vfslocked);
-	return (error);
-}
-
 /*
  * Syscall to push extended attribute configuration information into the
  * VFS.  Accepts a path, which it converts to a mountpoint, as well as