1 files changed, 0 insertions, 425 deletions
diff --git a/sys/miscfs/nullfs/null_vfsops.c b/sys/miscfs/nullfs/null_vfsops.c
deleted file mode 100644
index 8573398..0000000
--- a/sys/miscfs/nullfs/null_vfsops.c
+++ /dev/null
@@ -1,425 +0,0 @@
-/*
- * Copyright (c) 1992, 1993, 1995
- *	The Regents of the University of California.  All rights reserved.
- *
- * This code is derived from software donated to Berkeley by
- * Jan-Simon Pendry.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 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.
- * 3. All advertising materials mentioning features or use of this software
- *    must display the following acknowledgement:
- *	This product includes software developed by the University of
- *	California, Berkeley and its contributors.
- * 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
- * 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
- * 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)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * 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.
- *
- *	@(#)null_vfsops.c	8.2 (Berkeley) 1/21/94
- *
- * @(#)lofs_vfsops.c	1.2 (Berkeley) 6/18/92
- * $FreeBSD$
- */
-
-/*
- * Null Layer
- * (See null_vnops.c for a description of what this does.)
- */
-
-#include <sys/param.h>
-#include <sys/systm.h>
-#include <sys/kernel.h>
-#include <sys/lock.h>
-#include <sys/malloc.h>
-#include <sys/mount.h>
-#include <sys/namei.h>
-#include <sys/proc.h>
-#include <sys/vnode.h>
-
-#include <miscfs/nullfs/null.h>
-
-static MALLOC_DEFINE(M_NULLFSMNT, "NULLFS mount", "NULLFS mount structure");
-
-static int	nullfs_fhtovp(struct mount *mp, struct fid *fidp,
-				   struct vnode **vpp);
-static int	nullfs_checkexp(struct mount *mp, struct sockaddr *nam,
-				    int *extflagsp, struct ucred **credanonp);
-static int	nullfs_mount(struct mount *mp, char *path, caddr_t data,
-				  struct nameidata *ndp, struct proc *p);
-static int	nullfs_quotactl(struct mount *mp, int cmd, uid_t uid,
-				     caddr_t arg, struct proc *p);
-static int	nullfs_root(struct mount *mp, struct vnode **vpp);
-static int	nullfs_start(struct mount *mp, int flags, struct proc *p);
-static int	nullfs_statfs(struct mount *mp, struct statfs *sbp,
-				   struct proc *p);
-static int	nullfs_sync(struct mount *mp, int waitfor,
-				 struct ucred *cred, struct proc *p);
-static int	nullfs_unmount(struct mount *mp, int mntflags, struct proc *p);
-static int	nullfs_vget(struct mount *mp, ino_t ino, struct vnode **vpp);
-static int	nullfs_vptofh(struct vnode *vp, struct fid *fhp);
-static int	nullfs_extattrctl(struct mount *mp, int cmd,
-				       struct vnode *filename_vp,
-				       int namespace, const char *attrname,
-				       struct proc *p);
-
-/*
- * Mount null layer
- */
-static int
-nullfs_mount(mp, path, data, ndp, p)
-	struct mount *mp;
-	char *path;
-	caddr_t data;
-	struct nameidata *ndp;
-	struct proc *p;
-{
-	int error = 0;
-	struct null_args args;
-	struct vnode *lowerrootvp, *vp;
-	struct vnode *nullm_rootvp;
-	struct null_mount *xmp;
-	u_int size;
-	int isvnunlocked = 0;
-
-	NULLFSDEBUG("nullfs_mount(mp = %p)\n", (void *)mp);
-
-	/*
-	 * Update is a no-op
-	 */
-	if (mp->mnt_flag & MNT_UPDATE) {
-		return (EOPNOTSUPP);
-		/* return VFS_MOUNT(MOUNTTONULLMOUNT(mp)->nullm_vfs, path, data, ndp, p);*/
-	}
-
-	/*
-	 * Get argument
-	 */
-	error = copyin(data, (caddr_t)&args, sizeof(struct null_args));
-	if (error)
-		return (error);
-
-	/*
-	 * Unlock lower node to avoid deadlock.
-	 * (XXX) VOP_ISLOCKED is needed?
-	 */
-	if ((mp->mnt_vnodecovered->v_op == null_vnodeop_p) &&
-		VOP_ISLOCKED(mp->mnt_vnodecovered, NULL)) {
-		VOP_UNLOCK(mp->mnt_vnodecovered, 0, p);
-		isvnunlocked = 1;
-	}
-	/*
-	 * Find lower node
-	 */
-	NDINIT(ndp, LOOKUP, FOLLOW|WANTPARENT|LOCKLEAF,
-		UIO_USERSPACE, args.target, p);
-	error = namei(ndp);
-	/*
-	 * Re-lock vnode.
-	 */
-	if (isvnunlocked && !VOP_ISLOCKED(mp->mnt_vnodecovered, NULL))
-		vn_lock(mp->mnt_vnodecovered, LK_EXCLUSIVE | LK_RETRY, p);
-
-	if (error)
-		return (error);
-	NDFREE(ndp, NDF_ONLY_PNBUF);
-
-	/*
-	 * Sanity check on lower vnode
-	 */
-	lowerrootvp = ndp->ni_vp;
-
-	vrele(ndp->ni_dvp);
-	ndp->ni_dvp = NULLVP;
-
-	/*
-	 * Check multi null mount to avoid `lock against myself' panic.
-	 */
-	if (lowerrootvp == VTONULL(mp->mnt_vnodecovered)->null_lowervp) {
-		NULLFSDEBUG("nullfs_mount: multi null mount?\n");
-		vput(lowerrootvp);
-		return (EDEADLK);
-	}
-
-	xmp = (struct null_mount *) malloc(sizeof(struct null_mount),
-				M_NULLFSMNT, M_WAITOK);	/* XXX */
-
-	/*
-	 * Save reference to underlying FS
-	 */
-	xmp->nullm_vfs = lowerrootvp->v_mount;
-
-	/*
-	 * Save reference.  Each mount also holds
-	 * a reference on the root vnode.
-	 */
-	error = null_node_create(mp, lowerrootvp, &vp);
-	/*
-	 * Unlock the node (either the lower or the alias)
-	 */
-	VOP_UNLOCK(vp, 0, p);
-	/*
-	 * Make sure the node alias worked
-	 */
-	if (error) {
-		vrele(lowerrootvp);
-		free(xmp, M_NULLFSMNT);	/* XXX */
-		return (error);
-	}
-
-	/*
-	 * Keep a held reference to the root vnode.
-	 * It is vrele'd in nullfs_unmount.
-	 */
-	nullm_rootvp = vp;
-	nullm_rootvp->v_flag |= VROOT;
-	xmp->nullm_rootvp = nullm_rootvp;
-	if (NULLVPTOLOWERVP(nullm_rootvp)->v_mount->mnt_flag & MNT_LOCAL)
-		mp->mnt_flag |= MNT_LOCAL;
-	mp->mnt_data = (qaddr_t) xmp;
-	vfs_getnewfsid(mp);
-
-	(void) copyinstr(args.target, mp->mnt_stat.f_mntfromname, MNAMELEN - 1,
-	    &size);
-	bzero(mp->mnt_stat.f_mntfromname + size, MNAMELEN - size);
-	(void)nullfs_statfs(mp, &mp->mnt_stat, p);
-	NULLFSDEBUG("nullfs_mount: lower %s, alias at %s\n",
-		mp->mnt_stat.f_mntfromname, mp->mnt_stat.f_mntonname);
-	return (0);
-}
-
-/*
- * VFS start.  Nothing needed here - the start routine
- * on the underlying filesystem will have been called
- * when that filesystem was mounted.
- */
-static int
-nullfs_start(mp, flags, p)
-	struct mount *mp;
-	int flags;
-	struct proc *p;
-{
-	return (0);
-	/* return VFS_START(MOUNTTONULLMOUNT(mp)->nullm_vfs, flags, p); */
-}
-
-/*
- * Free reference to null layer
- */
-static int
-nullfs_unmount(mp, mntflags, p)
-	struct mount *mp;
-	int mntflags;
-	struct proc *p;
-{
-	void *mntdata;
-	int error;
-	int flags = 0;
-
-	NULLFSDEBUG("nullfs_unmount: mp = %p\n", (void *)mp);
-
-	if (mntflags & MNT_FORCE)
-		flags |= FORCECLOSE;
-
-	/* There is 1 extra root vnode reference (nullm_rootvp). */
-	error = vflush(mp, 1, flags);
-	if (error)
-		return (error);
-
-	/*
-	 * Finally, throw away the null_mount structure
-	 */
-	mntdata = mp->mnt_data;
-	mp->mnt_data = 0;
-	free(mntdata, M_NULLFSMNT);
-	return 0;
-}
-
-static int
-nullfs_root(mp, vpp)
-	struct mount *mp;
-	struct vnode **vpp;
-{
-	struct proc *p = curproc;	/* XXX */
-	struct vnode *vp;
-
-	NULLFSDEBUG("nullfs_root(mp = %p, vp = %p->%p)\n", (void *)mp,
-	    (void *)MOUNTTONULLMOUNT(mp)->nullm_rootvp,
-	    (void *)NULLVPTOLOWERVP(MOUNTTONULLMOUNT(mp)->nullm_rootvp));
-
-	/*
-	 * Return locked reference to root.
-	 */
-	vp = MOUNTTONULLMOUNT(mp)->nullm_rootvp;
-	VREF(vp);
-
-#ifdef NULLFS_DEBUG
-	if (VOP_ISLOCKED(vp, NULL)) {
-		Debugger("root vnode is locked.\n");
-		vrele(vp);
-		return (EDEADLK);
-	}
-#endif
-	vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, p);
-	*vpp = vp;
-	return 0;
-}
-
-static int
-nullfs_quotactl(mp, cmd, uid, arg, p)
-	struct mount *mp;
-	int cmd;
-	uid_t uid;
-	caddr_t arg;
-	struct proc *p;
-{
-	return VFS_QUOTACTL(MOUNTTONULLMOUNT(mp)->nullm_vfs, cmd, uid, arg, p);
-}
-
-static int
-nullfs_statfs(mp, sbp, p)
-	struct mount *mp;
-	struct statfs *sbp;
-	struct proc *p;
-{
-	int error;
-	struct statfs mstat;
-
-	NULLFSDEBUG("nullfs_statfs(mp = %p, vp = %p->%p)\n", (void *)mp,
-	    (void *)MOUNTTONULLMOUNT(mp)->nullm_rootvp,
-	    (void *)NULLVPTOLOWERVP(MOUNTTONULLMOUNT(mp)->nullm_rootvp));
-
-	bzero(&mstat, sizeof(mstat));
-
-	error = VFS_STATFS(MOUNTTONULLMOUNT(mp)->nullm_vfs, &mstat, p);
-	if (error)
-		return (error);
-
-	/* now copy across the "interesting" information and fake the rest */
-	sbp->f_type = mstat.f_type;
-	sbp->f_flags = mstat.f_flags;
-	sbp->f_bsize = mstat.f_bsize;
-	sbp->f_iosize = mstat.f_iosize;
-	sbp->f_blocks = mstat.f_blocks;
-	sbp->f_bfree = mstat.f_bfree;
-	sbp->f_bavail = mstat.f_bavail;
-	sbp->f_files = mstat.f_files;
-	sbp->f_ffree = mstat.f_ffree;
-	if (sbp != &mp->mnt_stat) {
-		bcopy(&mp->mnt_stat.f_fsid, &sbp->f_fsid, sizeof(sbp->f_fsid));
-		bcopy(mp->mnt_stat.f_mntonname, sbp->f_mntonname, MNAMELEN);
-		bcopy(mp->mnt_stat.f_mntfromname, sbp->f_mntfromname, MNAMELEN);
-	}
-	return (0);
-}
-
-static int
-nullfs_sync(mp, waitfor, cred, p)
-	struct mount *mp;
-	int waitfor;
-	struct ucred *cred;
-	struct proc *p;
-{
-	/*
-	 * XXX - Assumes no data cached at null layer.
-	 */
-	return (0);
-}
-
-static int
-nullfs_vget(mp, ino, vpp)
-	struct mount *mp;
-	ino_t ino;
-	struct vnode **vpp;
-{
-	int error;
-	error = VFS_VGET(MOUNTTONULLMOUNT(mp)->nullm_vfs, ino, vpp);
-	if (error)
-		return (error);
-
-	return (null_node_create(mp, *vpp, vpp));
-}
-
-static int
-nullfs_fhtovp(mp, fidp, vpp)
-	struct mount *mp;
-	struct fid *fidp;
-	struct vnode **vpp;
-{
-	int error;
-	error = VFS_FHTOVP(MOUNTTONULLMOUNT(mp)->nullm_vfs, fidp, vpp);
-	if (error)
-		return (error);
-
-	return (null_node_create(mp, *vpp, vpp));
-}
-
-static int
-nullfs_checkexp(mp, nam, extflagsp, credanonp)
-	struct mount *mp;
-	struct sockaddr *nam;
-	int *extflagsp; 
-	struct ucred **credanonp;
-{
-
-	return VFS_CHECKEXP(MOUNTTONULLMOUNT(mp)->nullm_vfs, nam, 
-		extflagsp, credanonp);
-}
-
-static int
-nullfs_vptofh(vp, fhp)
-	struct vnode *vp;
-	struct fid *fhp;
-{
-	return VFS_VPTOFH(NULLVPTOLOWERVP(vp), fhp);
-}
-
-static int                        
-nullfs_extattrctl(mp, cmd, filename_vp, namespace, attrname, p)
-	struct mount *mp;
-	int cmd;
-	struct vnode *filename_vp;
-	int namespace;
-	const char *attrname;
-	struct proc *p;            
-{
-	return VFS_EXTATTRCTL(MOUNTTONULLMOUNT(mp)->nullm_vfs, cmd, filename_vp,
-	    namespace, attrname, p);
-}
-
-
-static struct vfsops null_vfsops = {
-	nullfs_mount,
-	nullfs_start,
-	nullfs_unmount,
-	nullfs_root,
-	nullfs_quotactl,
-	nullfs_statfs,
-	nullfs_sync,
-	nullfs_vget,
-	nullfs_fhtovp,
-	nullfs_checkexp,
-	nullfs_vptofh,
-	nullfs_init,
-	nullfs_uninit,
-	nullfs_extattrctl,
-};
-
-VFS_SET(null_vfsops, nullfs, VFCF_LOOPBACK);