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freebsd-dev/sys/ntfs/ntfs_vfsops.c
bmilekic e67bcfcaf3 Change and clean the mutex lock interface. 
mtx_enter(lock, type) becomes:

mtx_lock(lock) for sleep locks (MTX_DEF-initialized locks)
mtx_lock_spin(lock) for spin locks (MTX_SPIN-initialized)

similarily, for releasing a lock, we now have:

mtx_unlock(lock) for MTX_DEF and mtx_unlock_spin(lock) for MTX_SPIN.
We change the caller interface for the two different types of locks
because the semantics are entirely different for each case, and this
makes it explicitly clear and, at the same time, it rids us of the
extra `type' argument.

The enter->lock and exit->unlock change has been made with the idea
that we're "locking data" and not "entering locked code" in mind.

Further, remove all additional "flags" previously passed to the
lock acquire/release routines with the exception of two:

MTX_QUIET and MTX_NOSWITCH

The functionality of these flags is preserved and they can be passed
to the lock/unlock routines by calling the corresponding wrappers:

mtx_{lock, unlock}_flags(lock, flag(s)) and
mtx_{lock, unlock}_spin_flags(lock, flag(s)) for MTX_DEF and MTX_SPIN
locks, respectively.

Re-inline some lock acq/rel code; in the sleep lock case, we only
inline the _obtain_lock()s in order to ensure that the inlined code
fits into a cache line. In the spin lock case, we inline recursion and
actually only perform a function call if we need to spin. This change
has been made with the idea that we generally tend to avoid spin locks
and that also the spin locks that we do have and are heavily used
(i.e. sched_lock) do recurse, and therefore in an effort to reduce
function call overhead for some architectures (such as alpha), we
inline recursion for this case.

Create a new malloc type for the witness code and retire from using
the M_DEV type. The new type is called M_WITNESS and is only declared
if WITNESS is enabled.

Begin cleaning up some machdep/mutex.h code - specifically updated the
"optimized" inlined code in alpha/mutex.h and wrote MTX_LOCK_SPIN
and MTX_UNLOCK_SPIN asm macros for the i386/mutex.h as we presently
need those.

Finally, caught up to the interface changes in all sys code.

Contributors: jake, jhb, jasone (in no particular order)
2001-02-09 06:11:45 +00:00

1065 lines
23 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>
#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.
*/
/* Save "last mounted on" info for mount point (NULL pad)*/
copyinstr( path, /* mount point*/
mp->mnt_stat.f_mntonname, /* save area*/
MNAMELEN - 1, /* max size*/
&size); /* real size*/
bzero( mp->mnt_stat.f_mntonname + size, MNAMELEN - size);
/* 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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