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0623d11f51
freebsd-skq/sys/ntfs/ntfs_vfsops.c
Adrian Chadd f3a90da995 Reviewed by: jlemon 
An initial tidyup of the mount() syscall and VFS mount code.

This code replaces the earlier work done by jlemon in an attempt to
make linux_mount() work.

* the guts of the mount work has been moved into vfs_mount().

* move `type', `path' and `flags' from being userland variables into being
  kernel variables in vfs_mount(). `data' remains a pointer into
  userspace.

* Attempt to verify the `type' and `path' strings passed to vfs_mount()
  aren't too long.

* rework mount() and linux_mount() to take the userland parameters
  (besides data, as mentioned) and pass kernel variables to vfs_mount().
  (linux_mount() already did this, I've just tidied it up a little more.)

* remove the copyin*() stuff for `path'. `data' still requires copyin*()
  since its a pointer into userland.

* set `mount->mnt_statf_mntonname' in vfs_mount() rather than in each
  filesystem.  This variable is generally initialised with `path', and
  each filesystem can override it if they want to.

* NOTE: f_mntonname is intiailised with "/" in the case of a root mount.
2001-03-01 21:00:17 +00:00

1061 lines
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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>
#if defined(__NetBSD__)
#include <sys/device.h>
#endif
#include <vm/vm.h>
#include <vm/vm_param.h>
#if defined(__NetBSD__)
#include <vm/vm_prot.h>
#endif
#include <vm/vm_page.h>
#include <vm/vm_object.h>
#include <vm/vm_extern.h>
#if defined(__NetBSD__)
#include <miscfs/specfs/specdev.h>
#endif
/*#define NTFS_DEBUG 1*/
#include <ntfs/ntfs.h>
#include <ntfs/ntfs_inode.h>
#include <ntfs/ntfs_subr.h>
#include <ntfs/ntfs_vfsops.h>
#include <ntfs/ntfs_ihash.h>
#include <ntfs/ntfsmount.h>
#if defined(__FreeBSD__)
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");
#endif
static int ntfs_root __P((struct mount *, struct vnode **));
static int ntfs_statfs __P((struct mount *, struct statfs *,
struct proc *));
static int ntfs_unmount __P((struct mount *, int, struct proc *));
static int ntfs_vget __P((struct mount *mp, ino_t ino,
struct vnode **vpp));
static int ntfs_mountfs __P((register struct vnode *, struct mount *,
struct ntfs_args *, struct proc *));
static int ntfs_vptofh __P((struct vnode *, struct fid *));
static int ntfs_fhtovp __P((struct mount *, struct fid *,
struct vnode **));
#if !defined (__FreeBSD__)
static int ntfs_quotactl __P((struct mount *, int, uid_t, caddr_t,
struct proc *));
static int ntfs_start __P((struct mount *, int, struct proc *));
static int ntfs_sync __P((struct mount *, int, struct ucred *,
struct proc *));
#endif
#if defined(__FreeBSD__)
struct sockaddr;
static int ntfs_mount __P((struct mount *, char *, caddr_t,
struct nameidata *, struct proc *));
static int ntfs_init __P((struct vfsconf *));
static int ntfs_checkexp __P((struct mount *, struct sockaddr *,
int *, struct ucred **));
#elif defined(__NetBSD__)
static int ntfs_mount __P((struct mount *, const char *, void *,
struct nameidata *, struct proc *));
static void ntfs_init __P((void));
static int ntfs_mountroot __P((void));
static int ntfs_sysctl __P((int *, u_int, void *, size_t *, void *,
size_t, struct proc *));
static int ntfs_checkexp __P((struct mount *, struct mbuf *,
int *, struct ucred **));
#endif
/*
* Verify a remote client has export rights and return these rights via.
* exflagsp and credanonp.
*/
static int
ntfs_checkexp(mp, nam, exflagsp, credanonp)
#if defined(__FreeBSD__)
register struct mount *mp;
struct sockaddr *nam;
int *exflagsp;
struct ucred **credanonp;
#else /* defined(__NetBSD__) */
register struct mount *mp;
struct mbuf *nam;
int *exflagsp;
struct ucred **credanonp;
#endif
{
register struct netcred *np;
register struct ntfsmount *ntm = VFSTONTFS(mp);
/*
* Get the export permission structure for this <mp, client> tuple.
*/
np = vfs_export_lookup(mp, &ntm->ntm_export, nam);
if (np == NULL)
return (EACCES);
*exflagsp = np->netc_exflags;
*credanonp = &np->netc_anon;
return (0);
}
#if defined(__NetBSD__)
/*ARGSUSED*/
static int
ntfs_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p)
int *name;
u_int namelen;
void *oldp;
size_t *oldlenp;
void *newp;
size_t newlen;
struct proc *p;
{
return (EINVAL);
}
static int
ntfs_mountroot()
{
struct mount *mp;
extern struct vnode *rootvp;
struct proc *p = curproc; /* XXX */
int error;
struct ntfs_args args;
if (root_device->dv_class != DV_DISK)
return (ENODEV);
/*
* Get vnodes for rootdev.
*/
if (bdevvp(rootdev, &rootvp))
panic("ntfs_mountroot: can't setup rootvp");
if ((error = vfs_rootmountalloc(MOUNT_NTFS, "root_device", &mp))) {
vrele(rootvp);
return (error);
}
args.flag = 0;
args.uid = 0;
args.gid = 0;
args.mode = 0777;
if ((error = ntfs_mountfs(rootvp, mp, &args, p)) != 0) {
mp->mnt_op->vfs_refcount--;
vfs_unbusy(mp);
free(mp, M_MOUNT);
vrele(rootvp);
return (error);
}
mtx_lock(&mountlist_mtx);
TAILQ_INSERT_TAIL(&mountlist, mp, mnt_list);
mtx_unlock(&mountlist_mtx);
(void)ntfs_statfs(mp, &mp->mnt_stat, p);
vfs_unbusy(mp);
return (0);
}
static void
ntfs_init ()
{
ntfs_nthashinit();
ntfs_toupper_init();
}
#elif defined(__FreeBSD__)
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;
}
#endif /* NetBSD */
static int
ntfs_mount (
struct mount *mp,
#if defined(__FreeBSD__)
char *path,
caddr_t data,
#else
const char *path,
void *data,
#endif
struct nameidata *ndp,
struct proc *p )
{
size_t size;
int err = 0;
struct vnode *devvp;
struct ntfs_args args;
#ifdef __FreeBSD__
/*
* Use NULL path to flag a root mount
*/
if( path == NULL) {
/*
***
* Mounting root file system
***
*/
/* Get vnode for root device*/
if( bdevvp( rootdev, &rootvp))
panic("ffs_mountroot: can't setup bdevvp for root");
/*
* FS specific handling
*/
mp->mnt_flag |= MNT_RDONLY; /* XXX globally applicable?*/
/*
* Attempt mount
*/
if( ( err = ntfs_mountfs(rootvp, mp, &args, p)) != 0) {
/* fs specific cleanup (if any)*/
goto error_1;
}
goto dostatfs; /* success*/
}
#endif /* FreeBSD */
/*
***
* Mounting non-root file system or updating a file system
***
*/
/* copy in user arguments*/
err = copyin(data, (caddr_t)&args, sizeof (struct ntfs_args));
if (err)
goto error_1; /* can't get arguments*/
/*
* If updating, check whether changing from read-only to
* read/write; if there is no device name, that's all we do.
*/
if (mp->mnt_flag & MNT_UPDATE) {
/* if not updating name...*/
if (args.fspec == 0) {
/*
* Process export requests. Jumping to "success"
* will return the vfs_export() error code.
*/
struct ntfsmount *ntm = VFSTONTFS(mp);
err = vfs_export(mp, &ntm->ntm_export, &args.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_USERSPACE, args.fspec, p);
err = namei(ndp);
if (err) {
/* can't get devvp!*/
goto error_1;
}
NDFREE(ndp, NDF_ONLY_PNBUF);
devvp = ndp->ni_vp;
#if defined(__FreeBSD__)
if (!vn_isdisk(devvp, &err))
goto error_2;
#else
if (devvp->v_type != VBLK) {
err = ENOTBLK;
goto error_2;
}
if (major(devvp->v_rdev) >= nblkdev) {
err = ENXIO;
goto error_2;
}
#endif
if (mp->mnt_flag & MNT_UPDATE) {
#if 0
/*
********************
* UPDATE
********************
*/
if (devvp != ntmp->um_devvp)
err = EINVAL; /* needs translation */
else
vrele(devvp);
/*
* Update device name only on success
*/
if( !err) {
/* Save "mounted from" info for mount point (NULL pad)*/
copyinstr( args.fspec,
mp->mnt_stat.f_mntfromname,
MNAMELEN - 1,
&size);
bzero( mp->mnt_stat.f_mntfromname + size, MNAMELEN - size);
}
#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)*/
copyinstr( args.fspec, /* device name*/
mp->mnt_stat.f_mntfromname, /* save area*/
MNAMELEN - 1, /* max size*/
&size); /* real size*/
bzero( mp->mnt_stat.f_mntfromname + size, MNAMELEN - size);
err = ntfs_mountfs(devvp, mp, &args, p);
}
if (err) {
goto error_2;
}
#ifdef __FreeBSD__
dostatfs:
#endif
/*
* Initialize FS stat information in mount struct; uses both
* mp->mnt_stat.f_mntonname and mp->mnt_stat.f_mntfromname
*
* This code is common to root and non-root mounts
*/
(void)VFS_STATFS(mp, &mp->mnt_stat, p);
goto success;
error_2: /* error with devvp held*/
/* release devvp before failing*/
vrele(devvp);
error_1: /* no state to back out*/
success:
return(err);
}
/*
* Common code for mount and mountroot
*/
int
ntfs_mountfs(devvp, mp, argsp, p)
register struct vnode *devvp;
struct mount *mp;
struct ntfs_args *argsp;
struct proc *p;
{
struct buf *bp;
struct ntfsmount *ntmp;
dev_t dev = devvp->v_rdev;
int error, ronly, ncount, i;
struct vnode *vp;
/*
* Disallow multiple mounts of the same device.
* Disallow mounting of a device that is currently in use
* (except for root, which might share swap device for miniroot).
* Flush out any old buffers remaining from a previous use.
*/
error = vfs_mountedon(devvp);
if (error)
return (error);
ncount = vcount(devvp);
#if defined(__FreeBSD__)
if (devvp->v_object)
ncount -= 1;
#endif
if (ncount > 1 && devvp != rootvp)
return (EBUSY);
#if defined(__FreeBSD__)
VN_LOCK(devvp, LK_EXCLUSIVE | LK_RETRY, p);
error = vinvalbuf(devvp, V_SAVE, p->p_ucred, p, 0, 0);
VOP__UNLOCK(devvp, 0, p);
#else
error = vinvalbuf(devvp, V_SAVE, p->p_ucred, p, 0, 0);
#endif
if (error)
return (error);
ronly = (mp->mnt_flag & MNT_RDONLY) != 0;
VN_LOCK(devvp, LK_EXCLUSIVE | LK_RETRY, p);
error = VOP_OPEN(devvp, ronly ? FREAD : FREAD|FWRITE, FSCRED, p);
VOP__UNLOCK(devvp, 0, p);
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) );
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_dev = dev;
ntmp->ntm_devvp = devvp;
ntmp->ntm_uid = argsp->uid;
ntmp->ntm_gid = argsp->gid;
ntmp->ntm_mode = argsp->mode;
ntmp->ntm_flag = argsp->flag;
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], &(ntmp->ntm_sysvn[pi[i]]));
if(error)
goto out1;
ntmp->ntm_sysvn[pi[i]]->v_flag |= VSYSTEM;
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, &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);
}
#if defined(__FreeBSD__)
mp->mnt_stat.f_fsid.val[0] = dev2udev(dev);
mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum;
#else
mp->mnt_stat.f_fsid.val[0] = dev;
mp->mnt_stat.f_fsid.val[1] = makefstype(MOUNT_NTFS);
#endif
mp->mnt_maxsymlinklen = 0;
mp->mnt_flag |= MNT_LOCAL;
devvp->v_rdev->si_mountpoint = mp;
return (0);
out1:
for(i=0;i<NTFS_SYSNODESNUM;i++)
if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]);
if (vflush(mp,NULLVP,0))
dprintf(("ntfs_mountfs: vflush failed\n"));
out:
devvp->v_rdev->si_mountpoint = NULL;
if (bp)
brelse(bp);
#if defined __NetBSD__
/* lock the device vnode before calling VOP_CLOSE() */
VN_LOCK(devvp, LK_EXCLUSIVE | LK_RETRY, p);
(void)VOP_CLOSE(devvp, ronly ? FREAD : FREAD|FWRITE, NOCRED, p);
VOP__UNLOCK(devvp, 0, p);
#else
(void)VOP_CLOSE(devvp, ronly ? FREAD : FREAD|FWRITE, NOCRED, p);
#endif
return (error);
}
#if !defined(__FreeBSD__)
static int
ntfs_start (
struct mount *mp,
int flags,
struct proc *p )
{
return (0);
}
#endif
static int
ntfs_unmount(
struct mount *mp,
int mntflags,
struct proc *p)
{
register struct ntfsmount *ntmp;
int error, ronly = 0, 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,NULLVP,flags | SKIPSYSTEM);
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]) &&
(ntmp->ntm_sysvn[i]->v_usecount > 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,NULLVP,flags);
if (error)
printf("ntfs_unmount: vflush failed(sysnodes): %d\n",error);
/* Check if the type of device node isn't VBAD before
* touching v_specinfo. If the device vnode is revoked, the
* field is NULL and touching it causes null pointer derefercence.
*/
if (ntmp->ntm_devvp->v_type != VBAD)
ntmp->ntm_devvp->v_rdev->si_mountpoint = NULL;
vinvalbuf(ntmp->ntm_devvp, V_SAVE, NOCRED, p, 0, 0);
#if defined(__NetBSD__)
/* lock the device vnode before calling VOP_CLOSE() */
VOP_LOCK(ntmp->ntm_devvp, LK_EXCLUSIVE | LK_RETRY);
error = VOP_CLOSE(ntmp->ntm_devvp, ronly ? FREAD : FREAD|FWRITE,
NOCRED, p);
VOP__UNLOCK(ntmp->ntm_devvp, 0, p);
#else
error = VOP_CLOSE(ntmp->ntm_devvp, ronly ? FREAD : FREAD|FWRITE,
NOCRED, p);
#endif
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"));
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 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, &nvp);
if(error) {
printf("ntfs_root: VFS_VGET failed: %d\n",error);
return (error);
}
*vpp = nvp;
return (0);
}
#if !defined(__FreeBSD__)
static int
ntfs_quotactl (
struct mount *mp,
int cmds,
uid_t uid,
caddr_t arg,
struct proc *p)
{
printf("\nntfs_quotactl():\n");
return EOPNOTSUPP;
}
#endif
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 proc *p)
{
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;
#if defined(__FreeBSD__)
sbp->f_type = mp->mnt_vfc->vfc_typenum;
#elif defined(__NetBSD__)
sbp->f_type = 0;
#else
sbp->f_type = MOUNT_NTFS;
#endif
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;
if (sbp != &mp->mnt_stat) {
bcopy((caddr_t)mp->mnt_stat.f_mntonname,
(caddr_t)&sbp->f_mntonname[0], MNAMELEN);
bcopy((caddr_t)mp->mnt_stat.f_mntfromname,
(caddr_t)&sbp->f_mntfromname[0], MNAMELEN);
}
sbp->f_flags = mp->mnt_flag;
#ifdef __NetBSD__
strncpy(sbp->f_fstypename, mp->mnt_op->vfs_name, MFSNAMELEN);
#endif
return (0);
}
#if !defined(__FreeBSD__)
static int
ntfs_sync (
struct mount *mp,
int waitfor,
struct ucred *cred,
struct proc *p)
{
/*dprintf(("ntfs_sync():\n"));*/
return (0);
}
#endif
/*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(): %s: %d\n", mp->mnt_stat->f_mntonname,
ntfhp->ntfid_ino));
if ((error = VFS_VGET(mp, ntfhp->ntfid_ino, &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;
return (0);
}
static int
ntfs_vptofh(
struct vnode *vp,
struct fid *fhp)
{
register struct ntnode *ntp;
register struct ntfid *ntfhp;
ddprintf(("ntfs_fhtovp(): %s: %p\n", vp->v_mount->mnt_stat->f_mntonname,
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 proc *p,
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, p);
*vpp = FTOV(fp);
ntfs_ntput(ip);
return (0);
}
error = getnewvnode(VT_NTFS, ntmp->ntm_mountp, ntfs_vnodeop_p, &vp);
if(error) {
ntfs_frele(fp);
ntfs_ntput(ip);
return (error);
}
dprintf(("ntfs_vget: vnode: %p for ntnode: %d\n", vp,ino));
#ifdef __FreeBSD__
lockinit(&fp->f_lock, PINOD, "fnode", 0, 0);
#endif
fp->f_vp = vp;
vp->v_data = fp;
vp->v_type = f_type;
if (ino == NTFS_ROOTINO)
vp->v_flag |= VROOT;
ntfs_ntput(ip);
if (lkflags & LK_TYPE_MASK) {
error = VN_LOCK(vp, lkflags, p);
if (error) {
vput(vp);
return (error);
}
}
VREF(ip->i_devvp);
*vpp = vp;
return (0);
}
static int
ntfs_vget(
struct mount *mp,
ino_t ino,
struct vnode **vpp)
{
return ntfs_vgetex(mp, ino, NTFS_A_DATA, NULL,
LK_EXCLUSIVE | LK_RETRY, 0, curproc, vpp);
}
#if defined(__FreeBSD__)
static struct vfsops ntfs_vfsops = {
ntfs_mount,
vfs_stdstart,
ntfs_unmount,
ntfs_root,
vfs_stdquotactl,
ntfs_statfs,
vfs_stdsync,
ntfs_vget,
ntfs_fhtovp,
ntfs_checkexp,
ntfs_vptofh,
ntfs_init,
ntfs_uninit,
vfs_stdextattrctl,
};
VFS_SET(ntfs_vfsops, ntfs, 0);
#elif defined(__NetBSD__)
extern struct vnodeopv_desc ntfs_vnodeop_opv_desc;
struct vnodeopv_desc *ntfs_vnodeopv_descs[] = {
&ntfs_vnodeop_opv_desc,
NULL,
};
struct vfsops ntfs_vfsops = {
MOUNT_NTFS,
ntfs_mount,
ntfs_start,
ntfs_unmount,
ntfs_root,
ntfs_quotactl,
ntfs_statfs,
ntfs_sync,
ntfs_vget,
ntfs_fhtovp,
ntfs_vptofh,
ntfs_init,
ntfs_sysctl,
ntfs_mountroot,
ntfs_checkexp,
ntfs_vnodeopv_descs,
};
#else /* !NetBSD && !FreeBSD */
static struct vfsops ntfs_vfsops = {
ntfs_mount,
ntfs_start,
ntfs_unmount,
ntfs_root,
ntfs_quotactl,
ntfs_statfs,
ntfs_sync,
ntfs_vget,
ntfs_fhtovp,
ntfs_vptofh,
ntfs_init,
};
VFS_SET(ntfs_vfsops, ntfs, MOUNT_NTFS, 0);
#endif
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