1 /* $NetBSD: ntfs_vfsops.c,v 1.23 1999/11/15 19:38:14 jdolecek Exp $ */
4 * Copyright (c) 1998, 1999 Semen Ustimenko
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 #include <sys/param.h>
33 #include <sys/systm.h>
34 #include <sys/namei.h>
37 #include <sys/kernel.h>
38 #include <sys/vnode.h>
39 #include <sys/mount.h>
42 #include <sys/fcntl.h>
43 #include <sys/malloc.h>
44 #include <sys/systm.h>
46 #include <geom/geom.h>
47 #include <geom/geom_vfs.h>
50 #include <vm/vm_param.h>
51 #include <vm/vm_page.h>
52 #include <vm/vm_object.h>
53 #include <vm/vm_extern.h>
55 /*#define NTFS_DEBUG 1*/
56 #include <fs/ntfs/ntfs.h>
57 #include <fs/ntfs/ntfs_inode.h>
58 #include <fs/ntfs/ntfs_subr.h>
59 #include <fs/ntfs/ntfs_vfsops.h>
60 #include <fs/ntfs/ntfs_ihash.h>
61 #include <fs/ntfs/ntfsmount.h>
63 static MALLOC_DEFINE(M_NTFSMNT, "ntfs_mount", "NTFS mount structure");
64 MALLOC_DEFINE(M_NTFSNTNODE,"ntfs_ntnode", "NTFS ntnode information");
65 MALLOC_DEFINE(M_NTFSFNODE,"ntfs_fnode", "NTFS fnode information");
66 MALLOC_DEFINE(M_NTFSDIR,"ntfs_dir", "NTFS dir buffer");
70 static int ntfs_mountfs(register struct vnode *, struct mount *,
72 static int ntfs_calccfree(struct ntfsmount *ntmp, cn_t *cfreep);
74 static vfs_init_t ntfs_init;
75 static vfs_uninit_t ntfs_uninit;
76 static vfs_vget_t ntfs_vget;
77 static vfs_fhtovp_t ntfs_fhtovp;
78 static vfs_cmount_t ntfs_cmount;
79 static vfs_mount_t ntfs_mount;
80 static vfs_root_t ntfs_root;
81 static vfs_statfs_t ntfs_statfs;
82 static vfs_unmount_t ntfs_unmount;
84 static b_strategy_t ntfs_bufstrategy;
87 * Buffer operations for NTFS vnodes.
88 * We punt on VOP_BMAP, so we need to do
89 * strategy on the file's vnode rather
90 * than the underlying device's
92 static struct buf_ops ntfs_vnbufops = {
94 .bop_strategy = ntfs_bufstrategy,
108 struct vfsconf *vcp )
110 ntfs_toupper_destroy();
111 ntfs_nthashdestroy();
123 struct ntfs_args args;
125 error = copyin(data, (caddr_t)&args, sizeof args);
128 ma = mount_argsu(ma, "from", args.fspec, MAXPATHLEN);
129 ma = mount_arg(ma, "export", &args.export, sizeof args.export);
130 ma = mount_argf(ma, "uid", "%d", args.uid);
131 ma = mount_argf(ma, "gid", "%d", args.gid);
132 ma = mount_argf(ma, "mode", "%d", args.mode);
133 ma = mount_argb(ma, args.flag & NTFS_MFLAG_CASEINS, "nocaseins");
134 ma = mount_argb(ma, args.flag & NTFS_MFLAG_ALLNAMES, "noallnames");
135 if (args.flag & NTFS_MFLAG_KICONV) {
136 ma = mount_argsu(ma, "cs_ntfs", args.cs_ntfs, 64);
137 ma = mount_argsu(ma, "cs_local", args.cs_local, 64);
140 error = kernel_mount(ma, flags);
145 static const char *ntfs_opts[] = {
146 "from", "export", "uid", "gid", "mode", "caseins", "allnames",
147 "kiconv", "cs_ntfs", "cs_local", NULL
157 struct nameidata ndp;
160 if (vfs_filteropt(mp->mnt_optnew, ntfs_opts))
163 from = vfs_getopts(mp->mnt_optnew, "from", &error);
168 * If updating, check whether changing from read-only to
171 if (mp->mnt_flag & MNT_UPDATE) {
172 if (vfs_flagopt(mp->mnt_optnew, "export", NULL, 0)) {
173 /* Process export requests in vfs_mount.c */
176 printf("ntfs_mount(): MNT_UPDATE not supported\n");
183 * Not an update, or updating the name: look up the name
184 * and verify that it refers to a sensible block device.
186 NDINIT(&ndp, LOOKUP, FOLLOW | LOCKLEAF, UIO_SYSSPACE, from, td);
189 /* can't get devvp!*/
192 NDFREE(&ndp, NDF_ONLY_PNBUF);
195 if (!vn_isdisk(devvp, &err)) {
200 if (mp->mnt_flag & MNT_UPDATE) {
208 if (devvp != ntmp->um_devvp)
209 err = EINVAL; /* needs translation */
222 * Since this is a new mount, we want the names for
223 * the device and the mount point copied in. If an
224 * error occurs, the mountpoint is discarded by the
225 * upper level code. Note that vfs_mount() handles
226 * copying the mountpoint f_mntonname for us, so we
227 * don't have to do it here unless we want to set it
228 * to something other than "path" for some rason.
230 /* Save "mounted from" info for mount point (NULL pad)*/
231 vfs_mountedfrom(mp, from);
233 err = ntfs_mountfs(devvp, mp, td);
242 error_1: /* no state to back out*/
243 /* XXX: missing NDFREE(&ndp, ...) */
250 * Common code for mount and mountroot
253 ntfs_mountfs(devvp, mp, td)
254 register struct vnode *devvp;
259 struct ntfsmount *ntmp;
260 struct cdev *dev = devvp->v_rdev;
261 int error, ronly, i, v;
263 struct g_consumer *cp;
264 struct g_provider *pp;
265 char *cs_ntfs, *cs_local;
267 ronly = (mp->mnt_flag & MNT_RDONLY) != 0;
272 * XXX: Do not allow more than one consumer to open a device
273 * associated with a particular GEOM provider.
274 * This disables multiple read-only mounts of a device,
275 * but it gets rid of panics in vget() when you try to
276 * mount the same device more than once.
278 pp = g_dev_getprovider(devvp->v_rdev);
279 if ((pp != NULL) && ((pp->acr | pp->acw | pp->ace ) != 0))
282 error = g_vfs_open(devvp, &cp, "ntfs", ronly ? 0 : 1);
286 VOP_UNLOCK(devvp, 0, td);
292 error = bread(devvp, BBLOCK, BBSIZE, NOCRED, &bp);
295 ntmp = malloc( sizeof *ntmp, M_NTFSMNT, M_WAITOK | M_ZERO);
296 bcopy( bp->b_data, &ntmp->ntm_bootfile, sizeof(struct bootfile) );
298 * We must not cache the boot block if its size is not exactly
299 * one cluster in order to avoid confusing the buffer cache when
300 * the boot file is read later by ntfs_readntvattr_plain(), which
301 * reads a cluster at a time.
303 if (ntfs_cntob(1) != BBSIZE)
304 bp->b_flags |= B_NOCACHE;
308 if (strncmp((const char *)ntmp->ntm_bootfile.bf_sysid, NTFS_BBID, NTFS_BBIDLEN)) {
310 dprintf(("ntfs_mountfs: invalid boot block\n"));
315 int8_t cpr = ntmp->ntm_mftrecsz;
317 ntmp->ntm_bpmftrec = ntmp->ntm_spc * cpr;
319 ntmp->ntm_bpmftrec = (1 << (-cpr)) / ntmp->ntm_bps;
321 dprintf(("ntfs_mountfs(): bps: %d, spc: %d, media: %x, mftrecsz: %d (%d sects)\n",
322 ntmp->ntm_bps,ntmp->ntm_spc,ntmp->ntm_bootfile.bf_media,
323 ntmp->ntm_mftrecsz,ntmp->ntm_bpmftrec));
324 dprintf(("ntfs_mountfs(): mftcn: 0x%x|0x%x\n",
325 (u_int32_t)ntmp->ntm_mftcn,(u_int32_t)ntmp->ntm_mftmirrcn));
327 ntmp->ntm_mountp = mp;
328 ntmp->ntm_devvp = devvp;
329 if (1 == vfs_scanopt(mp->mnt_optnew, "uid", "%d", &v))
331 if (1 == vfs_scanopt(mp->mnt_optnew, "gid", "%d", &v))
333 if (1 == vfs_scanopt(mp->mnt_optnew, "mode", "%d", &v))
335 vfs_flagopt(mp->mnt_optnew,
336 "caseins", &ntmp->ntm_flag, NTFS_MFLAG_CASEINS);
337 vfs_flagopt(mp->mnt_optnew,
338 "allnames", &ntmp->ntm_flag, NTFS_MFLAG_ALLNAMES);
340 ntmp->ntm_bo = &devvp->v_bufobj;
342 cs_local = vfs_getopts(mp->mnt_optnew, "cs_local", &error);
343 if (error && error != ENOENT)
345 cs_ntfs = vfs_getopts(mp->mnt_optnew, "cs_ntfs", &error);
346 if (error && error != ENOENT)
348 /* Copy in the 8-bit to Unicode conversion table */
349 /* Initialize Unicode to 8-bit table from 8toU table */
350 ntfs_82u_init(ntmp, cs_local, cs_ntfs);
351 if (cs_local != NULL && cs_ntfs != NULL)
352 ntfs_u28_init(ntmp, NULL, cs_local, cs_ntfs);
354 ntfs_u28_init(ntmp, ntmp->ntm_82u, cs_local, cs_ntfs);
356 mp->mnt_data = (qaddr_t)ntmp;
358 dprintf(("ntfs_mountfs(): case-%s,%s uid: %d, gid: %d, mode: %o\n",
359 (ntmp->ntm_flag & NTFS_MFLAG_CASEINS)?"insens.":"sens.",
360 (ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES)?" allnames,":"",
361 ntmp->ntm_uid, ntmp->ntm_gid, ntmp->ntm_mode));
364 * We read in some system nodes to do not allow
365 * reclaim them and to have everytime access to them.
368 int pi[3] = { NTFS_MFTINO, NTFS_ROOTINO, NTFS_BITMAPINO };
369 for (i=0; i<3; i++) {
370 error = VFS_VGET(mp, pi[i], LK_EXCLUSIVE,
371 &(ntmp->ntm_sysvn[pi[i]]));
374 ntmp->ntm_sysvn[pi[i]]->v_vflag |= VV_SYSTEM;
375 VREF(ntmp->ntm_sysvn[pi[i]]);
376 vput(ntmp->ntm_sysvn[pi[i]]);
380 /* read the Unicode lowercase --> uppercase translation table,
382 if ((error = ntfs_toupper_use(mp, ntmp)))
386 * Scan $BitMap and count free clusters
388 error = ntfs_calccfree(ntmp, &ntmp->ntm_cfree);
393 * Read and translate to internal format attribute
401 error = VFS_VGET(mp, NTFS_ATTRDEFINO, LK_EXCLUSIVE, &vp );
405 /* Count valid entries */
407 error = ntfs_readattr(ntmp, VTONT(vp),
409 num * sizeof(ad), sizeof(ad),
413 if (ad.ad_name[0] == 0)
417 /* Alloc memory for attribute definitions */
418 MALLOC(ntmp->ntm_ad, struct ntvattrdef *,
419 num * sizeof(struct ntvattrdef),
420 M_NTFSMNT, M_WAITOK);
422 ntmp->ntm_adnum = num;
424 /* Read them and translate */
426 error = ntfs_readattr(ntmp, VTONT(vp),
428 i * sizeof(ad), sizeof(ad),
434 ntmp->ntm_ad[i].ad_name[j] = ad.ad_name[j];
435 } while(ad.ad_name[j++]);
436 ntmp->ntm_ad[i].ad_namelen = j - 1;
437 ntmp->ntm_ad[i].ad_type = ad.ad_type;
443 mp->mnt_stat.f_fsid.val[0] = dev2udev(dev);
444 mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum;
445 mp->mnt_maxsymlinklen = 0;
447 mp->mnt_flag |= MNT_LOCAL;
452 for(i=0;i<NTFS_SYSNODESNUM;i++)
453 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]);
455 if (vflush(mp, 0, 0, td))
456 dprintf(("ntfs_mountfs: vflush failed\n"));
477 struct ntfsmount *ntmp;
480 dprintf(("ntfs_unmount: unmounting...\n"));
481 ntmp = VFSTONTFS(mp);
484 if(mntflags & MNT_FORCE)
487 dprintf(("ntfs_unmount: vflushing...\n"));
488 error = vflush(mp, 0, flags | SKIPSYSTEM, td);
490 printf("ntfs_unmount: vflush failed: %d\n",error);
494 /* Check if only system vnodes are rest */
495 for(i=0;i<NTFS_SYSNODESNUM;i++)
496 if((ntmp->ntm_sysvn[i]) &&
497 (vrefcnt(ntmp->ntm_sysvn[i]) > 1)) return (EBUSY);
499 /* Dereference all system vnodes */
500 for(i=0;i<NTFS_SYSNODESNUM;i++)
501 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]);
503 /* vflush system vnodes */
504 error = vflush(mp, 0, flags, td);
506 printf("ntfs_unmount: vflush failed(sysnodes): %d\n",error);
508 vinvalbuf(ntmp->ntm_devvp, V_SAVE, td, 0, 0);
512 g_vfs_close(ntmp->ntm_cp, td);
516 vrele(ntmp->ntm_devvp);
518 /* free the toupper table, if this has been last mounted ntfs volume */
519 ntfs_toupper_unuse();
521 dprintf(("ntfs_umount: freeing memory...\n"));
522 ntfs_u28_uninit(ntmp);
523 ntfs_82u_uninit(ntmp);
524 mp->mnt_data = (qaddr_t)0;
526 mp->mnt_flag &= ~MNT_LOCAL;
528 FREE(ntmp->ntm_ad, M_NTFSMNT);
529 FREE(ntmp, M_NTFSMNT);
543 dprintf(("ntfs_root(): sysvn: %p\n",
544 VFSTONTFS(mp)->ntm_sysvn[NTFS_ROOTINO]));
545 error = VFS_VGET(mp, (ino_t)NTFS_ROOTINO, LK_EXCLUSIVE, &nvp);
547 printf("ntfs_root: VFS_VGET failed: %d\n",error);
557 struct ntfsmount *ntmp,
566 vp = ntmp->ntm_sysvn[NTFS_BITMAPINO];
568 bmsize = VTOF(vp)->f_size;
570 MALLOC(tmp, u_int8_t *, bmsize, M_TEMP, M_WAITOK);
572 error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL,
573 0, bmsize, tmp, NULL);
577 for(i=0;i<bmsize;i++)
579 if(~tmp[i] & (1 << j)) cfree++;
593 struct ntfsmount *ntmp = VFSTONTFS(mp);
594 u_int64_t mftsize,mftallocated;
596 dprintf(("ntfs_statfs():\n"));
598 mftsize = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_size;
599 mftallocated = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_allocated;
601 sbp->f_type = mp->mnt_vfc->vfc_typenum;
602 sbp->f_bsize = ntmp->ntm_bps;
603 sbp->f_iosize = ntmp->ntm_bps * ntmp->ntm_spc;
604 sbp->f_blocks = ntmp->ntm_bootfile.bf_spv;
605 sbp->f_bfree = sbp->f_bavail = ntfs_cntobn(ntmp->ntm_cfree);
606 sbp->f_ffree = sbp->f_bfree / ntmp->ntm_bpmftrec;
607 sbp->f_files = mftallocated / ntfs_bntob(ntmp->ntm_bpmftrec) +
609 sbp->f_flags = mp->mnt_flag;
622 struct ntfid *ntfhp = (struct ntfid *)fhp;
625 ddprintf(("ntfs_fhtovp(): %d\n", ntfhp->ntfid_ino));
627 if ((error = VFS_VGET(mp, ntfhp->ntfid_ino, LK_EXCLUSIVE, &nvp)) != 0) {
631 /* XXX as unlink/rmdir/mkdir/creat are not currently possible
632 * with NTFS, we don't need to check anything else for now */
634 vnode_create_vobject(nvp, VTOF(nvp)->f_size, curthread);
650 register struct ntfsmount *ntmp;
656 dprintf(("ntfs_vgetex: ino: %d, attr: 0x%x:%s, lkf: 0x%lx, f: 0x%lx\n",
657 ino, attrtype, attrname?attrname:"", (u_long)lkflags,
660 ntmp = VFSTONTFS(mp);
664 error = ntfs_ntlookup(ntmp, ino, &ip);
666 printf("ntfs_vget: ntfs_ntget failed\n");
670 /* It may be not initialized fully, so force load it */
671 if (!(flags & VG_DONTLOADIN) && !(ip->i_flag & IN_LOADED)) {
672 error = ntfs_loadntnode(ntmp, ip);
674 printf("ntfs_vget: CAN'T LOAD ATTRIBUTES FOR INO: %d\n",
681 error = ntfs_fget(ntmp, ip, attrtype, attrname, &fp);
683 printf("ntfs_vget: ntfs_fget failed\n");
689 if (!(flags & VG_DONTVALIDFN) && !(fp->f_flag & FN_VALID)) {
690 if ((ip->i_frflag & NTFS_FRFLAG_DIR) &&
691 (fp->f_attrtype == NTFS_A_DATA && fp->f_attrname == NULL)) {
693 } else if (flags & VG_EXT) {
695 fp->f_size = fp->f_allocated = 0;
699 error = ntfs_filesize(ntmp, fp,
700 &fp->f_size, &fp->f_allocated);
707 fp->f_flag |= FN_VALID;
711 vget(FTOV(fp), lkflags, td);
717 error = getnewvnode("ntfs", ntmp->ntm_mountp, &ntfs_vnodeops, &vp);
723 /* XXX: Too early for mpsafe fs, lacks vnode lock */
724 error = insmntque(vp, ntmp->ntm_mountp);
730 dprintf(("ntfs_vget: vnode: %p for ntnode: %d\n", vp,ino));
736 vp->v_bufobj.bo_ops = &ntfs_vnbufops;
737 vp->v_bufobj.bo_private = vp;
739 if (ino == NTFS_ROOTINO)
740 vp->v_vflag |= VV_ROOT;
744 if (lkflags & LK_TYPE_MASK) {
745 error = vn_lock(vp, lkflags, td);
764 return ntfs_vgetex(mp, ino, NTFS_A_DATA, NULL, lkflags, 0,
769 ntfs_bufstrategy(struct bufobj *bo, struct buf *bp)
775 KASSERT(bo == &vp->v_bufobj, ("BO/VP mismatch: vp %p bo %p != %p",
776 vp, &vp->v_bufobj, bo));
777 rc = VOP_STRATEGY(vp, bp);
778 KASSERT(rc == 0, ("NTFS VOP_STRATEGY failed: bp=%p, "
779 "vp=%p, rc=%d", bp, vp, rc));
782 static struct vfsops ntfs_vfsops = {
783 .vfs_fhtovp = ntfs_fhtovp,
784 .vfs_init = ntfs_init,
785 .vfs_cmount = ntfs_cmount,
786 .vfs_mount = ntfs_mount,
787 .vfs_root = ntfs_root,
788 .vfs_statfs = ntfs_statfs,
789 .vfs_uninit = ntfs_uninit,
790 .vfs_unmount = ntfs_unmount,
791 .vfs_vget = ntfs_vget,
793 VFS_SET(ntfs_vfsops, ntfs, 0);
794 MODULE_VERSION(ntfs, 1);