static int
ntfs_statfs(struct mount *mp, struct statfs *sbp, struct ucred *cred)
{
struct ntfsmount *ntmp = VFSTONTFS(mp);
u_int64_t mftallocated;
dprintf(("ntfs_statfs():\n"));
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;
if (sbp != &mp->mnt_stat) {
bcopy((caddr_t)mp->mnt_stat.f_mntfromname,
(caddr_t)&sbp->f_mntfromname[0], MNAMELEN);
}
sbp->f_flags = mp->mnt_flag;
return (0);
}
static int
ntfs_statvfs(
struct mount *mp,
struct statvfs *sbp)
{
struct ntfsmount *ntmp = VFSTONTFS(mp);
u_int64_t mftallocated;
dprintf(("ntfs_statvfs():\n"));
mftallocated = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_allocated;
sbp->f_bsize = ntmp->ntm_bps;
sbp->f_frsize = sbp->f_bsize; /* XXX */
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_favail = sbp->f_bfree / ntmp->ntm_bpmftrec;
sbp->f_files = mftallocated / ntfs_bntob(ntmp->ntm_bpmftrec) +
sbp->f_ffree;
sbp->f_fresvd = sbp->f_bresvd = 0; /* XXX */
sbp->f_flag = mp->mnt_flag;
copy_statvfs_info(sbp, mp);
return (0);
}
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, NULL, (ino_t)NTFS_ROOTINO, &nvp);
if(error) {
kprintf("ntfs_root: VFS_VGET failed: %d\n",error);
return (error);
}
*vpp = nvp;
return (0);
}
/*
* Verify a remote client has export rights and return these rights via.
* exflagsp and credanonp.
*/
static int
ntfs_checkexp(struct mount *mp, struct sockaddr *nam,
int *exflagsp, struct ucred **credanonp)
{
struct netcred *np;
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);
}
static int
ntfs_statvfs(struct mount *mp, struct statvfs *sbp, struct ucred *cred)
{
struct ntfsmount *ntmp = VFSTONTFS(mp);
u_int64_t mftallocated;
dprintf(("ntfs_statvfs():\n"));
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_blocks = ntmp->ntm_bootfile.bf_spv;
sbp->f_bfree = sbp->f_bavail = ntmp->ntm_cfree * ntmp->ntm_spc;
sbp->f_ffree = sbp->f_bfree / ntmp->ntm_bpmftrec;
sbp->f_files = mftallocated / (ntmp->ntm_bpmftrec * ntmp->ntm_bps) +
sbp->f_ffree;
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;
struct ntfsmount *ntmp;
struct ntnode *ip;
struct fnode *fp;
struct vnode *vp;
enum vtype f_type;
dprintf(("ntfs_vgetex: ino: %ju, attr: 0x%x:%s, lkf: 0x%lx, f: 0x%lx\n",
(uintmax_t) ino, attrtype, attrname?attrname:"", lkflags, flags));
ntmp = VFSTONTFS(mp);
*vpp = NULL;
/* Get ntnode */
error = ntfs_ntlookup(ntmp, ino, &ip);
if (error) {
kprintf("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) {
kprintf("ntfs_vget: CAN'T LOAD ATTRIBUTES FOR INO: %"PRId64"\n",
ip->i_number);
ntfs_ntput(ip);
return (error);
}
}
error = ntfs_fget(ntmp, ip, attrtype, attrname, &fp);
if (error) {
kprintf("ntfs_vget: ntfs_fget failed\n");
ntfs_ntput(ip);
return (error);
}
f_type = VINT;
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 = VINT;
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);
*vpp = FTOV(fp);
ntfs_ntput(ip);
return (0);
}
error = getnewvnode(VT_NTFS, ntmp->ntm_mountp, &vp, VLKTIMEOUT, 0);
if(error) {
ntfs_frele(fp);
ntfs_ntput(ip);
return (error);
}
dprintf(("ntfs_vget: vnode: %p for ntnode: %ju\n", vp, (uintmax_t)ino));
fp->f_vp = vp;
vp->v_data = fp;
vp->v_type = f_type;
if (ino == NTFS_ROOTINO)
vsetflags(vp, VROOT);
/*
* Normal files use the buffer cache
*/
if (f_type == VREG)
vinitvmio(vp, fp->f_size, PAGE_SIZE, -1);
ntfs_ntput(ip);
KKASSERT(lkflags & LK_TYPE_MASK);
/* XXX leave vnode locked exclusively from getnewvnode */
*vpp = vp;
return (0);
}
static int
ntfs_unmount(struct mount *mp, int mntflags)
{
struct ntfsmount *ntmp;
int error, ronly, flags, i;
dprintf(("ntfs_unmount: unmounting...\n"));
ntmp = VFSTONTFS(mp);
ronly = (mp->mnt_flag & MNT_RDONLY) != 0;
flags = 0;
if(mntflags & MNT_FORCE)
flags |= FORCECLOSE;
dprintf(("ntfs_unmount: vflushing...\n"));
error = vflush(mp, 0, flags | SKIPSYSTEM);
if (error) {
kprintf("ntfs_unmount: vflush failed: %d\n",error);
return (error);
}
/* Check if only system vnodes are left */
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);
if (error)
kprintf("ntfs_unmount: vflush failed(sysnodes): %d\n",error);
/* Check if the type of device node isn't VBAD before
* touching v_cdevinfo. 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;
vn_lock(ntmp->ntm_devvp, LK_EXCLUSIVE | LK_RETRY);
vinvalbuf(ntmp->ntm_devvp, V_SAVE, 0, 0);
error = VOP_CLOSE(ntmp->ntm_devvp, ronly ? FREAD : FREAD|FWRITE, NULL);
vn_unlock(ntmp->ntm_devvp);
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;
kfree(ntmp->ntm_ad, M_NTFSMNT);
kfree(ntmp, M_NTFSMNT);
return (error);
}
static int
ntfs_mount(struct mount *mp, char *path, caddr_t data, struct ucred *cred)
{
size_t size;
int error;
struct vnode *devvp;
struct ntfs_args args;
struct nlookupdata nd;
struct vnode *rootvp;
error = 0;
/*
* 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( ( error = ntfs_mountfs(rootvp, mp, &args, cred)) != 0) {
/* fs specific cleanup (if any)*/
goto error_1;
}
goto dostatfs; /* success*/
}
/*
***
* Mounting non-root file system or updating a file system
***
*/
/* copy in user arguments*/
error = copyin(data, (caddr_t)&args, sizeof (struct ntfs_args));
if (error)
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 == NULL) {
/*
* Process export requests. Jumping to "success"
* will return the vfs_export() error code.
*/
struct ntfsmount *ntm = VFSTONTFS(mp);
error = vfs_export(mp, &ntm->ntm_export, &args.export);
goto success;
}
kprintf("ntfs_mount(): MNT_UPDATE not supported\n");
error = 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.
*/
devvp = NULL;
error = nlookup_init(&nd, args.fspec, UIO_USERSPACE, NLC_FOLLOW);
if (error == 0)
error = nlookup(&nd);
if (error == 0)
error = cache_vref(&nd.nl_nch, nd.nl_cred, &devvp);
nlookup_done(&nd);
if (error)
goto error_1;
if (!vn_isdisk(devvp, &error))
goto error_2;
if (mp->mnt_flag & MNT_UPDATE) {
#if 0
/*
********************
* UPDATE
********************
*/
if (devvp != ntmp->um_devvp)
error = EINVAL; /* needs translation */
else
vrele(devvp);
/*
* Update device name only on success
*/
if( !error) {
/* 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
********************
*/
/* 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);
error = ntfs_mountfs(devvp, mp, &args, cred);
}
if (error) {
goto error_2;
}
dostatfs:
/*
* Initialize FS stat information in mount struct; uses
* mp->mnt_stat.f_mntfromname.
*
* This code is common to root and non-root mounts
*/
(void)VFS_STATFS(mp, &mp->mnt_stat, cred);
goto success;
error_2: /* error with devvp held*/
/* release devvp before failing*/
vrele(devvp);
error_1: /* no state to back out*/
success:
return(error);
}
int
ntfs_vgetex(
struct mount *mp,
ino_t ino,
u_int32_t attrtype,
char *attrname,
u_long lkflags,
u_long flags,
struct vnode **vpp)
{
int error;
struct ntfsmount *ntmp;
struct ntnode *ip;
struct fnode *fp;
struct vnode *vp;
enum vtype f_type = VBAD;
dprintf(("ntfs_vgetex: ino: %llu, attr: 0x%x:%s, lkf: 0x%lx, f:"
" 0x%lx\n", (unsigned long long)ino, attrtype,
attrname ? attrname : "", (u_long)lkflags, (u_long)flags));
ntmp = VFSTONTFS(mp);
*vpp = NULL;
loop:
/* 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:"
" %llu\n", (unsigned long long)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);
}
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;
}
/*
* We may be calling vget() now. To avoid potential deadlock, we need
* to release ntnode lock, since due to locking order vnode
* lock has to be acquired first.
* ntfs_fget() bumped ntnode usecount, so ntnode won't be recycled
* prematurely.
* Take v_interlock before releasing ntnode lock to avoid races.
*/
vp = FTOV(fp);
if (vp) {
mutex_enter(vp->v_interlock);
ntfs_ntput(ip);
if (vget(vp, lkflags) != 0)
goto loop;
*vpp = vp;
return 0;
}
ntfs_ntput(ip);
error = getnewvnode(VT_NTFS, ntmp->ntm_mountp, ntfs_vnodeop_p,
NULL, &vp);
if(error) {
ntfs_frele(fp);
return (error);
}
ntfs_ntget(ip);
error = ntfs_fget(ntmp, ip, attrtype, attrname, &fp);
if (error) {
printf("ntfs_vget: ntfs_fget failed\n");
ntfs_ntput(ip);
return (error);
}
if (FTOV(fp)) {
/*
* Another thread beat us, put back freshly allocated
* vnode and retry.
*/
ntfs_ntput(ip);
ungetnewvnode(vp);
goto loop;
}
dprintf(("ntfs_vget: vnode: %p for ntnode: %llu\n", vp,
(unsigned long long)ino));
fp->f_vp = vp;
vp->v_data = fp;
if (f_type != VBAD)
vp->v_type = f_type;
genfs_node_init(vp, &ntfs_genfsops);
if (ino == NTFS_ROOTINO)
vp->v_vflag |= VV_ROOT;
ntfs_ntput(ip);
if (lkflags & (LK_EXCLUSIVE | LK_SHARED)) {
error = vn_lock(vp, lkflags);
if (error) {
vput(vp);
return (error);
}
}
uvm_vnp_setsize(vp, fp->f_size); /* XXX: mess, cf. ntfs_lookupfile() */
vref(ip->i_devvp);
*vpp = vp;
return (0);
}
static int
ntfs_unmount(
struct mount *mp,
int mntflags)
{
struct lwp *l = curlwp;
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) {
dprintf(("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) {
panic("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)
spec_node_setmountedfs(ntmp->ntm_devvp, NULL);
error = vinvalbuf(ntmp->ntm_devvp, V_SAVE, NOCRED, l, 0, 0);
KASSERT(error == 0);
/* lock the device vnode before calling VOP_CLOSE() */
vn_lock(ntmp->ntm_devvp, LK_EXCLUSIVE | LK_RETRY);
error = VOP_CLOSE(ntmp->ntm_devvp, ronly ? FREAD : FREAD|FWRITE,
NOCRED);
KASSERT(error == 0);
VOP_UNLOCK(ntmp->ntm_devvp);
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 = NULL;
mp->mnt_flag &= ~MNT_LOCAL;
free(ntmp->ntm_ad, M_NTFSMNT);
free(ntmp, M_NTFSMNT);
return (0);
}
static int
ntfs_mount (
struct mount *mp,
const char *path,
void *data,
size_t *data_len)
{
struct lwp *l = curlwp;
int err = 0, flags;
struct vnode *devvp;
struct ntfs_args *args = data;
if (*data_len < sizeof *args)
return EINVAL;
if (mp->mnt_flag & MNT_GETARGS) {
struct ntfsmount *ntmp = VFSTONTFS(mp);
if (ntmp == NULL)
return EIO;
args->fspec = NULL;
args->uid = ntmp->ntm_uid;
args->gid = ntmp->ntm_gid;
args->mode = ntmp->ntm_mode;
args->flag = ntmp->ntm_flag;
*data_len = sizeof *args;
return 0;
}
/*
***
* Mounting non-root file system or updating a file system
***
*/
/*
* 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) {
printf("ntfs_mount(): MNT_UPDATE not supported\n");
return (EINVAL);
}
/*
* Not an update, or updating the name: look up the name
* and verify that it refers to a sensible block device.
*/
err = namei_simple_user(args->fspec,
NSM_FOLLOW_NOEMULROOT, &devvp);
if (err) {
/* can't get devvp!*/
return (err);
}
if (devvp->v_type != VBLK) {
err = ENOTBLK;
goto fail;
}
if (bdevsw_lookup(devvp->v_rdev) == NULL) {
err = ENXIO;
goto fail;
}
if (mp->mnt_flag & MNT_UPDATE) {
#if 0
/*
********************
* UPDATE
********************
*/
if (devvp != ntmp->um_devvp) {
err = EINVAL; /* needs translation */
goto fail;
}
/*
* Update device name only on success
*/
err = set_statvfs_info(NULL, UIO_USERSPACE, args->fspec,
UIO_USERSPACE, mp->mnt_op->vfs_name, mp, p);
if (err)
goto fail;
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.
*/
/* Save "last mounted on" info for mount point (NULL pad)*/
err = set_statvfs_info(path, UIO_USERSPACE, args->fspec,
UIO_USERSPACE, mp->mnt_op->vfs_name, mp, l);
if (err)
goto fail;
if (mp->mnt_flag & MNT_RDONLY)
flags = FREAD;
else
flags = FREAD|FWRITE;
vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY);
err = VOP_OPEN(devvp, flags, FSCRED);
VOP_UNLOCK(devvp);
if (err)
goto fail;
err = ntfs_mountfs(devvp, mp, args, l);
if (err) {
vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY);
(void)VOP_CLOSE(devvp, flags, NOCRED);
VOP_UNLOCK(devvp);
goto fail;
}
}
/*
* 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_STATVFS(mp, &mp->mnt_stat);
return (err);
fail:
vrele(devvp);
return (err);
}
