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freebsd-nq/sys/fs/ntfs/ntfs_vfsops.c
Peter Edwards 174d6a9f73 Make NTFS at least minimally usable after bufobj and GEOM fallout. 
mmap() on NTFS files was hosed, returning pages offset from the
start of the disk rather than the start of the file. (ie, "cp" of
a 1-block file would get you a copy of the boot sector, not the
data in the file.) The solution isn't ideal, but gives a functioning
filesystem.

Cached vnode lookup was also broken, resulting in vnode haemorrhage.
A lookup on the same file twice would give you two vnodes, and the
resulting cached pages.

Just recently, mmap() was broken due to a lack of a call to
vnode_create_vobject() in ntfs_open().

Discussed with: phk@
2005-01-27 13:50:27 +00:00

797 lines
18 KiB
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/* $NetBSD: ntfs_vfsops.c,v 1.23 1999/11/15 19:38:14 jdolecek Exp $ */
/*-
* Copyright (c) 1998, 1999 Semen Ustimenko
* All rights reserved.
*
* 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.
*
* 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 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)
* 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.
*
* $FreeBSD$
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/namei.h>
#include <sys/conf.h>
#include <sys/proc.h>
#include <sys/kernel.h>
#include <sys/vnode.h>
#include <sys/mount.h>
#include <sys/bio.h>
#include <sys/buf.h>
#include <sys/fcntl.h>
#include <sys/malloc.h>
#include <sys/systm.h>
#include <geom/geom.h>
#include <geom/geom_vfs.h>
#include <vm/vm.h>
#include <vm/vm_param.h>
#include <vm/vm_page.h>
#include <vm/vm_object.h>
#include <vm/vm_extern.h>
/*#define NTFS_DEBUG 1*/
#include <fs/ntfs/ntfs.h>
#include <fs/ntfs/ntfs_inode.h>
#include <fs/ntfs/ntfs_subr.h>
#include <fs/ntfs/ntfs_vfsops.h>
#include <fs/ntfs/ntfs_ihash.h>
#include <fs/ntfs/ntfsmount.h>
MALLOC_DEFINE(M_NTFSMNT, "NTFS mount", "NTFS mount structure");
MALLOC_DEFINE(M_NTFSNTNODE,"NTFS ntnode", "NTFS ntnode information");
MALLOC_DEFINE(M_NTFSFNODE,"NTFS fnode", "NTFS fnode information");
MALLOC_DEFINE(M_NTFSDIR,"NTFS dir", "NTFS dir buffer");
struct sockaddr;
static int ntfs_mountfs(register struct vnode *, struct mount *,
struct thread *);
static vfs_init_t ntfs_init;
static vfs_uninit_t ntfs_uninit;
static vfs_vget_t ntfs_vget;
static vfs_fhtovp_t ntfs_fhtovp;
static vfs_cmount_t ntfs_cmount;
static vfs_mount_t ntfs_mount;
static vfs_root_t ntfs_root;
static vfs_statfs_t ntfs_statfs;
static vfs_unmount_t ntfs_unmount;
static vfs_vptofh_t ntfs_vptofh;
static b_strategy_t ntfs_bufstrategy;
/*
* Buffer operations for NTFS vnodes.
* We punt on VOP_BMAP, so we need to do
* strategy on the file's vnode rather
* than the underlying device's
*/
static struct buf_ops ntfs_vnbufops = {
.bop_name = "NTFS",
.bop_strategy = ntfs_bufstrategy,
};
static int
ntfs_init (
struct vfsconf *vcp )
{
ntfs_nthashinit();
ntfs_toupper_init();
return 0;
}
static int
ntfs_uninit (
struct vfsconf *vcp )
{
ntfs_toupper_destroy();
ntfs_nthashdestroy();
return 0;
}
static int
ntfs_cmount (
struct mntarg *ma,
void *data,
int flags,
struct thread *td )
{
int error;
struct ntfs_args args;
error = copyin(data, (caddr_t)&args, sizeof args);
if (error)
return (error);
ma = mount_argsu(ma, "from", args.fspec, MAXPATHLEN);
ma = mount_arg(ma, "export", &args.export, sizeof args.export);
ma = mount_argf(ma, "uid", "%d", args.uid);
ma = mount_argf(ma, "gid", "%d", args.gid);
ma = mount_argf(ma, "mode", "%d", args.mode);
ma = mount_argb(ma, args.flag & NTFS_MFLAG_CASEINS, "nocaseins");
ma = mount_argb(ma, args.flag & NTFS_MFLAG_ALLNAMES, "noallnames");
if (args.flag & NTFS_MFLAG_KICONV) {
ma = mount_argsu(ma, "cs_ntfs", args.cs_ntfs, 64);
ma = mount_argsu(ma, "cs_local", args.cs_local, 64);
}
error = kernel_mount(ma, flags);
return (error);
}
static const char *ntfs_opts[] = {
"from", "export", "uid", "gid", "mode", "caseins", "allnames",
"kiconv", "cs_ntfs", "cs_local", NULL
};
static int
ntfs_mount (
struct mount *mp,
struct thread *td )
{
int err = 0, error;
struct vnode *devvp;
struct nameidata ndp;
char *from;
struct export_args export;
if (vfs_filteropt(mp->mnt_optnew, ntfs_opts))
return (EINVAL);
from = vfs_getopts(mp->mnt_optnew, "from", &error);
if (error)
return (error);
/*
* If updating, check whether changing from read-only to
* read/write.
*/
if (mp->mnt_flag & MNT_UPDATE) {
error = vfs_copyopt(mp->mnt_optnew, "export",
&export, sizeof export);
if ((error == 0) && export.ex_flags != 0) {
/*
* Process export requests. Jumping to "success"
* will return the vfs_export() error code.
*/
err = vfs_export(mp, &export);
goto success;
}
printf("ntfs_mount(): MNT_UPDATE not supported\n");
err = EINVAL;
goto error_1;
}
/*
* Not an update, or updating the name: look up the name
* and verify that it refers to a sensible block device.
*/
NDINIT(&ndp, LOOKUP, FOLLOW, UIO_SYSSPACE, from, td);
err = namei(&ndp);
if (err) {
/* can't get devvp!*/
goto error_1;
}
NDFREE(&ndp, NDF_ONLY_PNBUF);
devvp = ndp.ni_vp;
if (!vn_isdisk(devvp, &err))
goto error_2;
if (mp->mnt_flag & MNT_UPDATE) {
#if 0
/*
********************
* UPDATE
********************
*/
if (devvp != ntmp->um_devvp)
err = EINVAL; /* needs translation */
else
vrele(devvp);
#endif
} else {
/*
********************
* NEW MOUNT
********************
*/
/*
* Since this is a new mount, we want the names for
* the device and the mount point copied in. If an
* error occurs, the mountpoint is discarded by the
* upper level code. Note that vfs_mount() handles
* copying the mountpoint f_mntonname for us, so we
* don't have to do it here unless we want to set it
* to something other than "path" for some rason.
*/
/* Save "mounted from" info for mount point (NULL pad)*/
vfs_mountedfrom(mp, from);
err = ntfs_mountfs(devvp, mp, td);
}
if (err) {
goto error_2;
}
goto success;
error_2: /* error with devvp held*/
/* release devvp before failing*/
vrele(devvp);
error_1: /* no state to back out*/
/* XXX: missing NDFREE(&ndp, ...) */
success:
return(err);
}
/*
* Common code for mount and mountroot
*/
int
ntfs_mountfs(devvp, mp, td)
register struct vnode *devvp;
struct mount *mp;
struct thread *td;
{
struct buf *bp;
struct ntfsmount *ntmp;
struct cdev *dev = devvp->v_rdev;
int error, ronly, i, v;
struct vnode *vp;
struct g_consumer *cp;
char *cs_ntfs, *cs_local;
ronly = (mp->mnt_flag & MNT_RDONLY) != 0;
vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY, td);
DROP_GIANT();
g_topology_lock();
error = g_vfs_open(devvp, &cp, "ntfs", ronly ? 0 : 1);
g_topology_unlock();
PICKUP_GIANT();
VOP_UNLOCK(devvp, 0, td);
if (error)
return (error);
bp = NULL;
error = bread(devvp, BBLOCK, BBSIZE, NOCRED, &bp);
if (error)
goto out;
ntmp = malloc( sizeof *ntmp, M_NTFSMNT, M_WAITOK | M_ZERO);
bcopy( bp->b_data, &ntmp->ntm_bootfile, sizeof(struct bootfile) );
/*
* We must not cache the boot block if its size is not exactly
* one cluster in order to avoid confusing the buffer cache when
* the boot file is read later by ntfs_readntvattr_plain(), which
* reads a cluster at a time.
*/
if (ntfs_cntob(1) != BBSIZE)
bp->b_flags |= B_NOCACHE;
brelse( bp );
bp = NULL;
if (strncmp(ntmp->ntm_bootfile.bf_sysid, NTFS_BBID, NTFS_BBIDLEN)) {
error = EINVAL;
dprintf(("ntfs_mountfs: invalid boot block\n"));
goto out;
}
{
int8_t cpr = ntmp->ntm_mftrecsz;
if( cpr > 0 )
ntmp->ntm_bpmftrec = ntmp->ntm_spc * cpr;
else
ntmp->ntm_bpmftrec = (1 << (-cpr)) / ntmp->ntm_bps;
}
dprintf(("ntfs_mountfs(): bps: %d, spc: %d, media: %x, mftrecsz: %d (%d sects)\n",
ntmp->ntm_bps,ntmp->ntm_spc,ntmp->ntm_bootfile.bf_media,
ntmp->ntm_mftrecsz,ntmp->ntm_bpmftrec));
dprintf(("ntfs_mountfs(): mftcn: 0x%x|0x%x\n",
(u_int32_t)ntmp->ntm_mftcn,(u_int32_t)ntmp->ntm_mftmirrcn));
ntmp->ntm_mountp = mp;
ntmp->ntm_devvp = devvp;
if (1 == vfs_scanopt(mp->mnt_optnew, "uid", "%d", &v))
ntmp->ntm_uid = v;
if (1 == vfs_scanopt(mp->mnt_optnew, "gid", "%d", &v))
ntmp->ntm_gid = v;
if (1 == vfs_scanopt(mp->mnt_optnew, "mode", "%d", &v))
ntmp->ntm_mode = v;
vfs_flagopt(mp->mnt_optnew,
"caseins", &ntmp->ntm_flag, NTFS_MFLAG_CASEINS);
vfs_flagopt(mp->mnt_optnew,
"allnames", &ntmp->ntm_flag, NTFS_MFLAG_ALLNAMES);
ntmp->ntm_cp = cp;
ntmp->ntm_bo = &devvp->v_bufobj;
cs_local = vfs_getopts(mp->mnt_optnew, "cs_local", &error);
if (error)
goto out;
cs_ntfs = vfs_getopts(mp->mnt_optnew, "cs_ntfs", &error);
if (error)
goto out;
/* Copy in the 8-bit to Unicode conversion table */
/* Initialize Unicode to 8-bit table from 8toU table */
ntfs_82u_init(ntmp, cs_local, cs_ntfs);
if (cs_local != NULL && cs_ntfs != NULL)
ntfs_u28_init(ntmp, NULL, cs_local, cs_ntfs);
else
ntfs_u28_init(ntmp, ntmp->ntm_82u, cs_local, cs_ntfs);
mp->mnt_data = (qaddr_t)ntmp;
dprintf(("ntfs_mountfs(): case-%s,%s uid: %d, gid: %d, mode: %o\n",
(ntmp->ntm_flag & NTFS_MFLAG_CASEINS)?"insens.":"sens.",
(ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES)?" allnames,":"",
ntmp->ntm_uid, ntmp->ntm_gid, ntmp->ntm_mode));
/*
* We read in some system nodes to do not allow
* reclaim them and to have everytime access to them.
*/
{
int pi[3] = { NTFS_MFTINO, NTFS_ROOTINO, NTFS_BITMAPINO };
for (i=0; i<3; i++) {
error = VFS_VGET(mp, pi[i], LK_EXCLUSIVE,
&(ntmp->ntm_sysvn[pi[i]]));
if(error)
goto out1;
ntmp->ntm_sysvn[pi[i]]->v_vflag |= VV_SYSTEM;
VREF(ntmp->ntm_sysvn[pi[i]]);
vput(ntmp->ntm_sysvn[pi[i]]);
}
}
/* read the Unicode lowercase --> uppercase translation table,
* if necessary */
if ((error = ntfs_toupper_use(mp, ntmp)))
goto out1;
/*
* Scan $BitMap and count free clusters
*/
error = ntfs_calccfree(ntmp, &ntmp->ntm_cfree);
if(error)
goto out1;
/*
* Read and translate to internal format attribute
* definition file.
*/
{
int num,j;
struct attrdef ad;
/* Open $AttrDef */
error = VFS_VGET(mp, NTFS_ATTRDEFINO, LK_EXCLUSIVE, &vp );
if(error)
goto out1;
/* Count valid entries */
for(num=0;;num++) {
error = ntfs_readattr(ntmp, VTONT(vp),
NTFS_A_DATA, NULL,
num * sizeof(ad), sizeof(ad),
&ad, NULL);
if (error)
goto out1;
if (ad.ad_name[0] == 0)
break;
}
/* Alloc memory for attribute definitions */
MALLOC(ntmp->ntm_ad, struct ntvattrdef *,
num * sizeof(struct ntvattrdef),
M_NTFSMNT, M_WAITOK);
ntmp->ntm_adnum = num;
/* Read them and translate */
for(i=0;i<num;i++){
error = ntfs_readattr(ntmp, VTONT(vp),
NTFS_A_DATA, NULL,
i * sizeof(ad), sizeof(ad),
&ad, NULL);
if (error)
goto out1;
j = 0;
do {
ntmp->ntm_ad[i].ad_name[j] = ad.ad_name[j];
} while(ad.ad_name[j++]);
ntmp->ntm_ad[i].ad_namelen = j - 1;
ntmp->ntm_ad[i].ad_type = ad.ad_type;
}
vput(vp);
}
mp->mnt_stat.f_fsid.val[0] = dev2udev(dev);
mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum;
mp->mnt_maxsymlinklen = 0;
mp->mnt_flag |= MNT_LOCAL;
return (0);
out1:
for(i=0;i<NTFS_SYSNODESNUM;i++)
if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]);
if (vflush(mp, 0, 0, td))
dprintf(("ntfs_mountfs: vflush failed\n"));
out:
if (bp)
brelse(bp);
DROP_GIANT();
g_topology_lock();
g_vfs_close(cp, td);
g_topology_unlock();
PICKUP_GIANT();
return (error);
}
static int
ntfs_unmount(
struct mount *mp,
int mntflags,
struct thread *td)
{
struct ntfsmount *ntmp;
int error, flags, i;
dprintf(("ntfs_unmount: unmounting...\n"));
ntmp = VFSTONTFS(mp);
flags = 0;
if(mntflags & MNT_FORCE)
flags |= FORCECLOSE;
dprintf(("ntfs_unmount: vflushing...\n"));
error = vflush(mp, 0, flags | SKIPSYSTEM, td);
if (error) {
printf("ntfs_unmount: vflush failed: %d\n",error);
return (error);
}
/* Check if only system vnodes are rest */
for(i=0;i<NTFS_SYSNODESNUM;i++)
if((ntmp->ntm_sysvn[i]) &&
(vrefcnt(ntmp->ntm_sysvn[i]) > 1)) return (EBUSY);
/* Dereference all system vnodes */
for(i=0;i<NTFS_SYSNODESNUM;i++)
if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]);
/* vflush system vnodes */
error = vflush(mp, 0, flags, td);
if (error)
printf("ntfs_unmount: vflush failed(sysnodes): %d\n",error);
vinvalbuf(ntmp->ntm_devvp, V_SAVE, td, 0, 0);
DROP_GIANT();
g_topology_lock();
g_vfs_close(ntmp->ntm_cp, td);
g_topology_unlock();
PICKUP_GIANT();
vrele(ntmp->ntm_devvp);
/* free the toupper table, if this has been last mounted ntfs volume */
ntfs_toupper_unuse();
dprintf(("ntfs_umount: freeing memory...\n"));
ntfs_u28_uninit(ntmp);
ntfs_82u_uninit(ntmp);
mp->mnt_data = (qaddr_t)0;
mp->mnt_flag &= ~MNT_LOCAL;
FREE(ntmp->ntm_ad, M_NTFSMNT);
FREE(ntmp, M_NTFSMNT);
return (error);
}
static int
ntfs_root(
struct mount *mp,
struct vnode **vpp,
struct thread *td )
{
struct vnode *nvp;
int error = 0;
dprintf(("ntfs_root(): sysvn: %p\n",
VFSTONTFS(mp)->ntm_sysvn[NTFS_ROOTINO]));
error = VFS_VGET(mp, (ino_t)NTFS_ROOTINO, LK_EXCLUSIVE, &nvp);
if(error) {
printf("ntfs_root: VFS_VGET failed: %d\n",error);
return (error);
}
*vpp = nvp;
return (0);
}
int
ntfs_calccfree(
struct ntfsmount *ntmp,
cn_t *cfreep)
{
struct vnode *vp;
u_int8_t *tmp;
int j, error;
long cfree = 0;
size_t bmsize, i;
vp = ntmp->ntm_sysvn[NTFS_BITMAPINO];
bmsize = VTOF(vp)->f_size;
MALLOC(tmp, u_int8_t *, bmsize, M_TEMP, M_WAITOK);
error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL,
0, bmsize, tmp, NULL);
if (error)
goto out;
for(i=0;i<bmsize;i++)
for(j=0;j<8;j++)
if(~tmp[i] & (1 << j)) cfree++;
*cfreep = cfree;
out:
FREE(tmp, M_TEMP);
return(error);
}
static int
ntfs_statfs(
struct mount *mp,
struct statfs *sbp,
struct thread *td)
{
struct ntfsmount *ntmp = VFSTONTFS(mp);
u_int64_t mftsize,mftallocated;
dprintf(("ntfs_statfs():\n"));
mftsize = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_size;
mftallocated = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_allocated;
sbp->f_type = mp->mnt_vfc->vfc_typenum;
sbp->f_bsize = ntmp->ntm_bps;
sbp->f_iosize = ntmp->ntm_bps * ntmp->ntm_spc;
sbp->f_blocks = ntmp->ntm_bootfile.bf_spv;
sbp->f_bfree = sbp->f_bavail = ntfs_cntobn(ntmp->ntm_cfree);
sbp->f_ffree = sbp->f_bfree / ntmp->ntm_bpmftrec;
sbp->f_files = mftallocated / ntfs_bntob(ntmp->ntm_bpmftrec) +
sbp->f_ffree;
sbp->f_flags = mp->mnt_flag;
return (0);
}
/*ARGSUSED*/
static int
ntfs_fhtovp(
struct mount *mp,
struct fid *fhp,
struct vnode **vpp)
{
struct vnode *nvp;
struct ntfid *ntfhp = (struct ntfid *)fhp;
int error;
ddprintf(("ntfs_fhtovp(): %d\n", ntfhp->ntfid_ino));
if ((error = VFS_VGET(mp, ntfhp->ntfid_ino, LK_EXCLUSIVE, &nvp)) != 0) {
*vpp = NULLVP;
return (error);
}
/* XXX as unlink/rmdir/mkdir/creat are not currently possible
* with NTFS, we don't need to check anything else for now */
*vpp = nvp;
vnode_create_vobject(nvp, VTOF(nvp)->f_size, curthread);
return (0);
}
static int
ntfs_vptofh(
struct vnode *vp,
struct fid *fhp)
{
register struct ntnode *ntp;
register struct ntfid *ntfhp;
ddprintf(("ntfs_fhtovp(): %p\n", vp));
ntp = VTONT(vp);
ntfhp = (struct ntfid *)fhp;
ntfhp->ntfid_len = sizeof(struct ntfid);
ntfhp->ntfid_ino = ntp->i_number;
/* ntfhp->ntfid_gen = ntp->i_gen; */
return (0);
}
int
ntfs_vgetex(
struct mount *mp,
ino_t ino,
u_int32_t attrtype,
char *attrname,
u_long lkflags,
u_long flags,
struct thread *td,
struct vnode **vpp)
{
int error;
register struct ntfsmount *ntmp;
struct ntnode *ip;
struct fnode *fp;
struct vnode *vp;
enum vtype f_type;
dprintf(("ntfs_vgetex: ino: %d, attr: 0x%x:%s, lkf: 0x%lx, f: 0x%lx\n",
ino, attrtype, attrname?attrname:"", (u_long)lkflags,
(u_long)flags));
ntmp = VFSTONTFS(mp);
*vpp = NULL;
/* Get ntnode */
error = ntfs_ntlookup(ntmp, ino, &ip);
if (error) {
printf("ntfs_vget: ntfs_ntget failed\n");
return (error);
}
/* It may be not initialized fully, so force load it */
if (!(flags & VG_DONTLOADIN) && !(ip->i_flag & IN_LOADED)) {
error = ntfs_loadntnode(ntmp, ip);
if(error) {
printf("ntfs_vget: CAN'T LOAD ATTRIBUTES FOR INO: %d\n",
ip->i_number);
ntfs_ntput(ip);
return (error);
}
}
error = ntfs_fget(ntmp, ip, attrtype, attrname, &fp);
if (error) {
printf("ntfs_vget: ntfs_fget failed\n");
ntfs_ntput(ip);
return (error);
}
f_type = VNON;
if (!(flags & VG_DONTVALIDFN) && !(fp->f_flag & FN_VALID)) {
if ((ip->i_frflag & NTFS_FRFLAG_DIR) &&
(fp->f_attrtype == NTFS_A_DATA && fp->f_attrname == NULL)) {
f_type = VDIR;
} else if (flags & VG_EXT) {
f_type = VNON;
fp->f_size = fp->f_allocated = 0;
} else {
f_type = VREG;
error = ntfs_filesize(ntmp, fp,
&fp->f_size, &fp->f_allocated);
if (error) {
ntfs_ntput(ip);
return (error);
}
}
fp->f_flag |= FN_VALID;
}
if (FTOV(fp)) {
vget(FTOV(fp), lkflags, td);
*vpp = FTOV(fp);
ntfs_ntput(ip);
return (0);
}
error = getnewvnode("ntfs", ntmp->ntm_mountp, &ntfs_vnodeops, &vp);
if(error) {
ntfs_frele(fp);
ntfs_ntput(ip);
return (error);
}
dprintf(("ntfs_vget: vnode: %p for ntnode: %d\n", vp,ino));
fp->f_vp = vp;
vp->v_data = fp;
vp->v_type = f_type;
vp->v_bufobj.bo_ops = &ntfs_vnbufops;
vp->v_bufobj.bo_private = vp;
if (ino == NTFS_ROOTINO)
vp->v_vflag |= VV_ROOT;
ntfs_ntput(ip);
if (lkflags & LK_TYPE_MASK) {
error = vn_lock(vp, lkflags, td);
if (error) {
vput(vp);
return (error);
}
}
*vpp = vp;
return (0);
}
static int
ntfs_vget(
struct mount *mp,
ino_t ino,
int lkflags,
struct vnode **vpp)
{
return ntfs_vgetex(mp, ino, NTFS_A_DATA, NULL, lkflags, 0,
curthread, vpp);
}
static void
ntfs_bufstrategy(struct bufobj *bo, struct buf *bp)
{
struct vnode *vp;
int rc;
vp = bo->bo_private;
KASSERT(bo == &vp->v_bufobj, ("BO/VP mismatch: vp %p bo %p != %p",
vp, &vp->v_bufobj, bo));
rc = VOP_STRATEGY(vp, bp);
KASSERT(rc == 0, ("NTFS VOP_STRATEGY failed: bp=%p, "
"vp=%p, rc=%d", bp, vp, rc));
}
static struct vfsops ntfs_vfsops = {
.vfs_fhtovp = ntfs_fhtovp,
.vfs_init = ntfs_init,
.vfs_cmount = ntfs_cmount,
.vfs_mount = ntfs_mount,
.vfs_root = ntfs_root,
.vfs_statfs = ntfs_statfs,
.vfs_uninit = ntfs_uninit,
.vfs_unmount = ntfs_unmount,
.vfs_vget = ntfs_vget,
.vfs_vptofh = ntfs_vptofh,
};
VFS_SET(ntfs_vfsops, ntfs, 0);
MODULE_VERSION(ntfs, 1);
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