/*      $NetBSD: msdosfs_denode.c,v 1.28 1998/02/10 14:10:00 mrg Exp $  */

/*-
 * SPDX-License-Identifier: BSD-4-Clause
 *
 * Copyright (C) 1994, 1995, 1997 Wolfgang Solfrank.
 * Copyright (C) 1994, 1995, 1997 TooLs GmbH.
 * All rights reserved.
 * Original code by Paul Popelka (paulp@uts.amdahl.com) (see below).
 *
 * 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 TooLs GmbH.
 * 4. The name of TooLs GmbH may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``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 TOOLS GMBH 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.
 */
/*-
 * Written by Paul Popelka (paulp@uts.amdahl.com)
 *
 * You can do anything you want with this software, just don't say you wrote
 * it, and don't remove this notice.
 *
 * This software is provided "as is".
 *
 * The author supplies this software to be publicly redistributed on the
 * understanding that the author is not responsible for the correct
 * functioning of this software in any circumstances and is not liable for
 * any damages caused by this software.
 *
 * October 1992
 */


// Modified to support the Haiku FAT driver.

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/buf.h>
#include <sys/clock.h>
// #include <sys/kernel.h>
        // Haiku port:  not needed
#include <sys/malloc.h>
#include <sys/mount.h>
#include <sys/vmmeter.h>
#include <sys/vnode.h>

// #include <vm/vm.h>
        // Haiku port:  not needed
#include <vm/vm_extern.h>

#include <fs/msdosfs/bpb.h>
#include <fs/msdosfs/direntry.h>
#include <fs/msdosfs/denode.h>
#include <fs/msdosfs/fat.h>
#include <fs/msdosfs/msdosfsmount.h>

// static MALLOC_DEFINE(M_MSDOSFSNODE, "msdosfs_node", "MSDOSFS vnode private part");
        // Haiku port:  not needed

static int
de_vncmpf(struct vnode *vp, void *arg)
{
        struct denode *de;
        uint64_t *a;

        a = arg;
        de = VTODE(vp);
        return (de->de_inode != *a) || (de->de_refcnt <= 0);
}

/*
 * If deget() succeeds it returns with the gotten denode locked().
 *
 * pmp       - address of msdosfsmount structure of the filesystem containing
 *             the denode of interest.  The address of
 *             the msdosfsmount structure are used.
 * dirclust  - which cluster bp contains, if dirclust is 0 (root directory)
 *             diroffset is relative to the beginning of the root directory,
 *             otherwise it is cluster relative.
 * diroffset - offset past begin of cluster of denode we want
 * lkflags   - locking flags (LK_NOWAIT)
 * depp      - returns the address of the gotten denode.
 */
int
deget(struct msdosfsmount *pmp, u_long dirclust, u_long diroffset,
    int lkflags, struct denode **depp)
{
        int error;
        uint64_t inode;
        struct mount *mntp = pmp->pm_mountp;
        struct direntry *direntptr;
        struct denode *ldep;
        struct vnode *nvp, *xvp;
        struct buf *bp;

#ifdef MSDOSFS_DEBUG
        printf("deget(pmp %p, dirclust %lu, diroffset %lx, flags %#x, "
            "depp %p)\n",
            pmp, dirclust, diroffset, lkflags, depp);
#endif
        MPASS((lkflags & LK_TYPE_MASK) == LK_EXCLUSIVE);

        /*
         * On FAT32 filesystems, root is a (more or less) normal
         * directory
         */
        if (FAT32(pmp) && dirclust == MSDOSFSROOT)
                dirclust = pmp->pm_rootdirblk;

        /*
         * See if the denode is in the denode cache. Use the location of
         * the directory entry to compute the hash value. For subdir use
         * address of "." entry. For root dir (if not FAT32) use cluster
         * MSDOSFSROOT, offset MSDOSFSROOT_OFS
         *
         * NOTE: de_vncmpf will explicitly skip any denodes that do not have
         * a de_refcnt > 0.  This insures that we do not attempt to use
         * a denode that represents an unlinked but still open file.
         * These files are not to be accessible even when the directory
         * entry that represented the file happens to be reused while the
         * deleted file is still open.
         */
        inode = DETOI(pmp, dirclust, diroffset);

        error = vfs_hash_get(mntp, inode, lkflags, curthread, &nvp,
            de_vncmpf, &inode);
#ifdef MSDOSFS_DEBUG
        printf("vfs_hash_get(inode %lu) error %d\n", inode, error);
#endif
        if (error)
                return (error);
        if (nvp != NULL) {
                *depp = VTODE(nvp);
                if ((*depp)->de_dirclust != dirclust) {
                        printf("%s: wrong dir cluster %lu %lu\n",
                            pmp->pm_mountp->mnt_stat.f_mntonname,
                            (*depp)->de_dirclust, dirclust);
                        goto badoff;
                }
                if ((*depp)->de_diroffset != diroffset) {
                        printf("%s: wrong dir offset %lu %lu\n",
                            pmp->pm_mountp->mnt_stat.f_mntonname,
                            (*depp)->de_diroffset,  diroffset);
                        goto badoff;
                }
                return (0);
badoff:
                vgone(nvp);
                vput(nvp);
                msdosfs_integrity_error(pmp);
                return (EBADF);
        }
        ldep = malloc(sizeof(struct denode), M_MSDOSFSNODE, M_WAITOK | M_ZERO);

        /*
         * Directory entry was not in cache, have to create a vnode and
         * copy it from the passed disk buffer.
         */
        /* getnewvnode() does a VREF() on the vnode */
        error = getnewvnode("msdosfs", mntp, &msdosfs_vnodeops, &nvp);
        if (error) {
                *depp = NULL;
                free(ldep, M_MSDOSFSNODE);
                return error;
        }
        nvp->v_data = ldep;
        ldep->de_vnode = nvp;
        ldep->de_flag = 0;
        ldep->de_dirclust = dirclust;
        ldep->de_diroffset = diroffset;
        ldep->de_inode = inode;
        cluster_init_vn(&ldep->de_clusterw);
        lockmgr(nvp->v_vnlock, LK_EXCLUSIVE | LK_NOWITNESS, NULL);
        VN_LOCK_AREC(nvp);      /* for doscheckpath */
        fc_purge(ldep, 0);      /* init the FAT cache for this denode */
        error = insmntque(nvp, mntp);
        if (error != 0) {
                free(ldep, M_MSDOSFSNODE);
                *depp = NULL;
                return (error);
        }
        error = vfs_hash_insert(nvp, inode, lkflags, curthread, &xvp,
            de_vncmpf, &inode);
#ifdef MSDOSFS_DEBUG
        printf("vfs_hash_insert(inode %lu) error %d\n", inode, error);
#endif
        if (error) {
                *depp = NULL;
                return (error);
        }
        if (xvp != NULL) {
                *depp = xvp->v_data;
                return (0);
        }

        ldep->de_pmp = pmp;
        ldep->de_refcnt = 1;
        /*
         * Copy the directory entry into the denode area of the vnode.
         */
        if ((dirclust == MSDOSFSROOT ||
            (FAT32(pmp) && dirclust == pmp->pm_rootdirblk)) &&
            diroffset == MSDOSFSROOT_OFS) {
                /*
                 * Directory entry for the root directory. There isn't one,
                 * so we manufacture one. We should probably rummage
                 * through the root directory and find a label entry (if it
                 * exists), and then use the time and date from that entry
                 * as the time and date for the root denode.
                 */
                nvp->v_vflag |= VV_ROOT; /* should be further down XXX */

                ldep->de_Attributes = ATTR_DIRECTORY;
                ldep->de_LowerCase = 0;
                if (FAT32(pmp))
                        ldep->de_StartCluster = pmp->pm_rootdirblk;
                        /* de_FileSize will be filled in further down */
                else {
                        ldep->de_StartCluster = MSDOSFSROOT;
                        ldep->de_FileSize = pmp->pm_rootdirsize * DEV_BSIZE;
                }
                /*
                 * fill in time and date so that fattime2timespec() doesn't
                 * spit up when called from msdosfs_getattr() with root
                 * denode
                 */
                ldep->de_CHun = 0;
                ldep->de_CTime = 0x0000;        /* 00:00:00      */
                ldep->de_CDate = (0 << DD_YEAR_SHIFT) | (1 << DD_MONTH_SHIFT)
                    | (1 << DD_DAY_SHIFT);
                /* Jan 1, 1980   */
                ldep->de_ADate = ldep->de_CDate;
                ldep->de_MTime = ldep->de_CTime;
                ldep->de_MDate = ldep->de_CDate;
                /* leave the other fields as garbage */
        } else {
                error = readep(pmp, dirclust, diroffset, &bp, &direntptr);
                if (error) {
                        /*
                         * The denode does not contain anything useful, so
                         * it would be wrong to leave it on its hash chain.
                         * Arrange for vput() to just forget about it.
                         */
                        ldep->de_Name[0] = SLOT_DELETED;
                        vgone(nvp);
                        vput(nvp);
                        *depp = NULL;
                        return (error);
                }
                (void)DE_INTERNALIZE(ldep, direntptr);
                brelse(bp);
        }

        /*
         * Fill in a few fields of the vnode and finish filling in the
         * denode.  Then return the address of the found denode.
         */
        if (ldep->de_Attributes & ATTR_DIRECTORY) {
                /*
                 * Since DOS directory entries that describe directories
                 * have 0 in the filesize field, we take this opportunity
                 * to find out the length of the directory and plug it into
                 * the denode structure.
                 */
                u_long size;

                /*
                 * XXX it sometimes happens that the "." entry has cluster
                 * number 0 when it shouldn't.  Use the actual cluster number
                 * instead of what is written in directory entry.
                 */
                if (diroffset == 0 && ldep->de_StartCluster != dirclust) {
#ifdef MSDOSFS_DEBUG
                        printf("deget(): \".\" entry at clust %lu != %lu\n",
                            dirclust, ldep->de_StartCluster);
#endif
                        ldep->de_StartCluster = dirclust;
                }

                nvp->v_type = VDIR;
                if (ldep->de_StartCluster != MSDOSFSROOT) {
                        error = pcbmap(ldep, 0xffff, 0, &size, 0);
                        if (error == E2BIG) {
                                ldep->de_FileSize = de_cn2off(pmp, size);
                                error = 0;
                        } else {
#ifdef MSDOSFS_DEBUG
                                printf("deget(): pcbmap returned %d\n", error);
#endif
                        }
                }
        } else
                nvp->v_type = VREG;
        vn_set_state(nvp, VSTATE_CONSTRUCTED);
        ldep->de_modrev = init_va_filerev();
        *depp = ldep;
        return (0);
}

int
deupdat(struct denode *dep, int waitfor)
{
        struct direntry dir;
        struct timespec ts;
        struct buf *bp;
        struct direntry *dirp;
        int error;

        if (DETOV(dep)->v_mount->mnt_flag & MNT_RDONLY) {
                dep->de_flag &= ~(DE_UPDATE | DE_CREATE | DE_ACCESS |
                    DE_MODIFIED);
                return (0);
        }
        vfs_timestamp(&ts);
        DETIMES(dep, &ts, &ts, &ts);
        if ((dep->de_flag & DE_MODIFIED) == 0 && waitfor == 0)
                return (0);
        dep->de_flag &= ~DE_MODIFIED;
        if (DETOV(dep)->v_vflag & VV_ROOT)
                return (EINVAL);
        if (dep->de_refcnt <= 0)
                return (0);
        error = readde(dep, &bp, &dirp);
        if (error)
                return (error);
        DE_EXTERNALIZE(&dir, dep);
        if (bcmp(dirp, &dir, sizeof(dir)) == 0) {
                if (waitfor == 0 || (bp->b_flags & B_DELWRI) == 0) {
                        brelse(bp);
                        return (0);
                }
        } else
                *dirp = dir;
        if ((DETOV(dep)->v_mount->mnt_flag & MNT_NOCLUSTERW) == 0)
                bp->b_flags |= B_CLUSTEROK;
        if (waitfor)
                error = bwrite(bp);
        else if (vm_page_count_severe() || buf_dirty_count_severe())
                bawrite(bp);
        else
                bdwrite(bp);
        return (error);
}

/*
 * Truncate the file described by dep to the length specified by length.
 */
int
detrunc(struct denode *dep, u_long length, int flags, struct ucred *cred)
{
        int error;
        int allerror;
        u_long eofentry;
        u_long chaintofree;
        daddr_t bn;
        int boff;
        int isadir = dep->de_Attributes & ATTR_DIRECTORY;
        struct buf *bp;
        struct msdosfsmount *pmp = dep->de_pmp;

#ifdef MSDOSFS_DEBUG
        printf("detrunc(): file %s, length %lu, flags %x\n", dep->de_Name, length, flags);
#endif

        /*
         * Disallow attempts to truncate the root directory since it is of
         * fixed size.  That's just the way dos filesystems are.  We use
         * the VROOT bit in the vnode because checking for the directory
         * bit and a startcluster of 0 in the denode is not adequate to
         * recognize the root directory at this point in a file or
         * directory's life.
         */
        if ((DETOV(dep)->v_vflag & VV_ROOT) && !FAT32(pmp)) {
#ifdef MSDOSFS_DEBUG
                printf("detrunc(): can't truncate root directory, clust %ld, offset %ld\n",
                    dep->de_dirclust, dep->de_diroffset);
#endif
                return (EINVAL);
        }

        if (dep->de_FileSize < length)
                return (deextend(dep, length, cred));

        /*
         * If the desired length is 0 then remember the starting cluster of
         * the file and set the StartCluster field in the directory entry
         * to 0.  If the desired length is not zero, then get the number of
         * the last cluster in the shortened file.  Then get the number of
         * the first cluster in the part of the file that is to be freed.
         * Then set the next cluster pointer in the last cluster of the
         * file to CLUST_EOFE.
         */
        if (length == 0) {
                chaintofree = dep->de_StartCluster;
                dep->de_StartCluster = 0;
                eofentry = ~0;
        } else {
                error = pcbmap(dep, de_clcount(pmp, length) - 1, 0,
                               &eofentry, 0);
                if (error) {
#ifdef MSDOSFS_DEBUG
                        printf("detrunc(): pcbmap fails %d\n", error);
#endif
                        return (error);
                }
        }

        fc_purge(dep, de_clcount(pmp, length));

        /*
         * If the new length is not a multiple of the cluster size then we
         * must zero the tail end of the new last cluster in case it
         * becomes part of the file again because of a seek.
         */
        if ((boff = length & pmp->pm_crbomask) != 0) {
                if (isadir) {
                        bn = cntobn(pmp, eofentry);
                        error = bread(pmp->pm_devvp, bn, pmp->pm_bpcluster,
                            NOCRED, &bp);
                } else {
                        error = bread(DETOV(dep), de_cluster(pmp, length),
                            pmp->pm_bpcluster, cred, &bp);
                }
                if (error) {
#ifdef MSDOSFS_DEBUG
                        printf("detrunc(): bread fails %d\n", error);
#endif
                        return (error);
                }
                memset(bp->b_data + boff, 0, pmp->pm_bpcluster - boff);
                if ((flags & IO_SYNC) != 0)
                        bwrite(bp);
                else
                        bdwrite(bp);
        }

        /*
         * Write out the updated directory entry.  Even if the update fails
         * we free the trailing clusters.
         */
        dep->de_FileSize = length;
        if (!isadir)
                dep->de_flag |= DE_UPDATE | DE_MODIFIED;
        allerror = vtruncbuf(DETOV(dep), length, pmp->pm_bpcluster);
#ifdef MSDOSFS_DEBUG
        if (allerror)
                printf("detrunc(): vtruncbuf error %d\n", allerror);
#endif
        error = deupdat(dep, !DOINGASYNC((DETOV(dep))));
        if (error != 0 && allerror == 0)
                allerror = error;
#ifdef MSDOSFS_DEBUG
        printf("detrunc(): allerror %d, eofentry %lu\n",
               allerror, eofentry);
#endif

        /*
         * If we need to break the cluster chain for the file then do it
         * now.
         */
        if (eofentry != (u_long)~0) {
                // Haiku port:  cast added to avoid compiler warning
                error = fatentry(FAT_GET_AND_SET, pmp, eofentry,
                                 &chaintofree, CLUST_EOFE);
                if (error) {
#ifdef MSDOSFS_DEBUG
                        printf("detrunc(): fatentry errors %d\n", error);
#endif
                        return (error);
                }
                fc_setcache(dep, FC_LASTFC, de_cluster(pmp, length - 1),
                    eofentry);
        }

        /*
         * Now free the clusters removed from the file because of the
         * truncation.
         */
        if (chaintofree != 0 && !MSDOSFSEOF(pmp, chaintofree))
                freeclusterchain(pmp, chaintofree);

        return (allerror);
}

/*
 * Extend the file described by dep to length specified by length.
 */
int
deextend(struct denode *dep, u_long length, struct ucred *cred)
{
        struct msdosfsmount *pmp = dep->de_pmp;
        struct vnode *vp = DETOV(dep);
        struct buf *bp;
        off_t eof_clusteroff;
        u_long count;
        int error;

        /*
         * The root of a DOS filesystem cannot be extended.
         */
        if ((vp->v_vflag & VV_ROOT) != 0 && !FAT32(pmp))
                return (EINVAL);

        /*
         * Directories cannot be extended.
         */
        if (dep->de_Attributes & ATTR_DIRECTORY)
                return (EISDIR);

        if (length <= dep->de_FileSize)
                panic("deextend: file too large");

        /*
         * Compute the number of clusters to allocate.
         */
        count = de_clcount(pmp, length) - de_clcount(pmp, dep->de_FileSize);
        if (count > 0) {
                if (count > pmp->pm_freeclustercount)
                        return (ENOSPC);
                error = extendfile(dep, count, NULL, NULL, DE_CLEAR);
                if (error != 0)
                        goto rewind;
        }

        /*
         * For the case of cluster size larger than the page size, we
         * need to ensure that the possibly dirty partial buffer at
         * the old end of file is not filled with invalid pages by
         * extension.  Otherwise it has a contradictory state of
         * B_CACHE | B_DELWRI but with invalid pages, and cannot be
         * neither written out nor validated.
         *
         * Fix it by proactively clearing extended pages.  Need to do
         * both vfs_bio_clrbuf() to mark pages valid, and to zero
         * actual buffer content which might exist in the tail of the
         * already valid cluster.
         */
        error = bread(vp, de_cluster(pmp, dep->de_FileSize), pmp->pm_bpcluster,
            NOCRED, &bp);
        if (error != 0)
                goto rewind;
        vfs_bio_clrbuf(bp);
        eof_clusteroff = de_cn2off(pmp, de_cluster(pmp, dep->de_FileSize));
        vfs_bio_bzero_buf(bp, dep->de_FileSize - eof_clusteroff,
            pmp->pm_bpcluster - dep->de_FileSize + eof_clusteroff);
        if (!DOINGASYNC(vp))
                (void)bwrite(bp);
        else if (vm_page_count_severe() || buf_dirty_count_severe())
                bawrite(bp);
        else
                bdwrite(bp);

        vnode_pager_setsize(vp, length);
        dep->de_FileSize = length;
        dep->de_flag |= DE_UPDATE | DE_MODIFIED;
        return (deupdat(dep, !DOINGASYNC(vp)));

rewind:
        /* truncate the added clusters away again */
        (void)detrunc(dep, dep->de_FileSize, 0, cred);
        return (error);
}

/*
 * Move a denode to its correct hash queue after the file it represents has
 * been moved to a new directory.
 */
// Haiku port:  not applicable.  In Haiku, the inode number of a node must remain constant
// while the volume is mounted.
#if 0
void
reinsert(struct denode *dep)
{
        struct vnode *vp;

        /*
         * Fix up the denode cache.  If the denode is for a directory,
         * there is nothing to do since the hash is based on the starting
         * cluster of the directory file and that hasn't changed.  If for a
         * file the hash is based on the location of the directory entry,
         * so we must remove it from the cache and re-enter it with the
         * hash based on the new location of the directory entry.
         */
#if 0
        if (dep->de_Attributes & ATTR_DIRECTORY)
                return;
#endif
        vp = DETOV(dep);
        dep->de_inode = DETOI(dep->de_pmp, dep->de_dirclust, dep->de_diroffset);
#ifdef MSDOSFS_DEBUG
        printf("vfs_hash_rehash(inode %lu, refcnt %lu, vp %p)\n",
            dep->de_inode, dep->de_refcnt, vp);
#endif
        vfs_hash_rehash(vp, dep->de_inode);
}
#endif // 0

// Haiku port:  unused FreeBSD hook function
#if 0
int
msdosfs_reclaim(struct vop_reclaim_args *ap)
{
        struct vnode *vp = ap->a_vp;
        struct denode *dep = VTODE(vp);

#ifdef MSDOSFS_DEBUG
        printf("msdosfs_reclaim(): dep %p, file %s, refcnt %ld\n",
            dep, dep->de_Name, dep->de_refcnt);
#endif

        /*
         * Remove the denode from its hash chain.
         */
#ifdef MSDOSFS_DEBUG
        printf("vfs_hash_remove(inode %lu, refcnt %lu, vp %p)\n",
            dep->de_inode, dep->de_refcnt, vp);
#endif
        vfs_hash_remove(vp);
        /*
         * Purge old data structures associated with the denode.
         */
#if 0 /* XXX */
        dep->de_flag = 0;
#endif
        free(dep, M_MSDOSFSNODE);
        vp->v_data = NULL;

        return (0);
}
#endif // 0

// Haiku port:  unused FreeBSD hook function
#if 0
int
msdosfs_inactive(struct vop_inactive_args *ap)
{
        struct vnode *vp = ap->a_vp;
        struct denode *dep = VTODE(vp);
        int error = 0;

#ifdef MSDOSFS_DEBUG
        printf("msdosfs_inactive(): dep %p, de_Name[0] %x\n", dep, dep->de_Name[0]);
#endif

        /*
         * Ignore denodes related to stale file handles.
         */
        if (dep->de_Name[0] == SLOT_DELETED || dep->de_Name[0] == SLOT_EMPTY)
                goto out;

        /*
         * If the file has been deleted and it is on a read/write
         * filesystem, then truncate the file, and mark the directory slot
         * as empty.  (This may not be necessary for the dos filesystem.)
         */
#ifdef MSDOSFS_DEBUG
        printf("msdosfs_inactive(): dep %p, refcnt %ld, mntflag %llx, MNT_RDONLY %llx\n",
            dep, dep->de_refcnt, (unsigned long long)vp->v_mount->mnt_flag,
            (unsigned long long)MNT_RDONLY);
#endif
        if (dep->de_refcnt <= 0 && (vp->v_mount->mnt_flag & MNT_RDONLY) == 0) {
                error = detrunc(dep, (u_long) 0, 0, NOCRED);
                dep->de_flag |= DE_UPDATE;
                dep->de_Name[0] = SLOT_DELETED;
        }
        deupdat(dep, 0);

out:
        /*
         * If we are done with the denode, reclaim it
         * so that it can be reused immediately.
         */
#ifdef MSDOSFS_DEBUG
        printf("msdosfs_inactive(): v_usecount %d, de_Name[0] %x\n",
               vrefcnt(vp), dep->de_Name[0]);
#endif
        if (dep->de_Name[0] == SLOT_DELETED || dep->de_Name[0] == SLOT_EMPTY)
                vrecycle(vp);
        return (error);
}
#endif // 0