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>
45 #include <sys/systm.h>
47 #include <geom/geom.h>
48 #include <geom/geom_vfs.h>
51 #include <vm/vm_param.h>
52 #include <vm/vm_page.h>
53 #include <vm/vm_object.h>
54 #include <vm/vm_extern.h>
56 /*#define NTFS_DEBUG 1*/
57 #include <fs/ntfs/ntfs.h>
58 #include <fs/ntfs/ntfs_inode.h>
59 #include <fs/ntfs/ntfs_subr.h>
60 #include <fs/ntfs/ntfs_vfsops.h>
61 #include <fs/ntfs/ntfs_ihash.h>
62 #include <fs/ntfs/ntfsmount.h>
64 static MALLOC_DEFINE(M_NTFSMNT, "ntfs_mount", "NTFS mount structure");
65 MALLOC_DEFINE(M_NTFSNTNODE,"ntfs_ntnode", "NTFS ntnode information");
66 MALLOC_DEFINE(M_NTFSFNODE,"ntfs_fnode", "NTFS fnode information");
67 MALLOC_DEFINE(M_NTFSDIR,"ntfs_dir", "NTFS dir buffer");
71 static int ntfs_mountfs(register struct vnode *, struct mount *,
73 static int ntfs_calccfree(struct ntfsmount *ntmp, cn_t *cfreep);
75 static vfs_init_t ntfs_init;
76 static vfs_uninit_t ntfs_uninit;
77 static vfs_vget_t ntfs_vget;
78 static vfs_fhtovp_t ntfs_fhtovp;
79 static vfs_cmount_t ntfs_cmount;
80 static vfs_mount_t ntfs_mount;
81 static vfs_root_t ntfs_root;
82 static vfs_statfs_t ntfs_statfs;
83 static vfs_unmount_t ntfs_unmount;
85 static b_strategy_t ntfs_bufstrategy;
88 * Buffer operations for NTFS vnodes.
89 * We punt on VOP_BMAP, so we need to do
90 * strategy on the file's vnode rather
91 * than the underlying device's
93 static struct buf_ops ntfs_vnbufops = {
95 .bop_strategy = ntfs_bufstrategy,
100 struct vfsconf *vcp )
109 struct vfsconf *vcp )
111 ntfs_toupper_destroy();
112 ntfs_nthashdestroy();
124 struct ntfs_args args;
126 error = copyin(data, (caddr_t)&args, sizeof args);
129 ma = mount_argsu(ma, "from", args.fspec, MAXPATHLEN);
130 ma = mount_arg(ma, "export", &args.export, sizeof args.export);
131 ma = mount_argf(ma, "uid", "%d", args.uid);
132 ma = mount_argf(ma, "gid", "%d", args.gid);
133 ma = mount_argf(ma, "mode", "%d", args.mode);
134 ma = mount_argb(ma, args.flag & NTFS_MFLAG_CASEINS, "nocaseins");
135 ma = mount_argb(ma, args.flag & NTFS_MFLAG_ALLNAMES, "noallnames");
136 if (args.flag & NTFS_MFLAG_KICONV) {
137 ma = mount_argsu(ma, "cs_ntfs", args.cs_ntfs, 64);
138 ma = mount_argsu(ma, "cs_local", args.cs_local, 64);
141 error = kernel_mount(ma, flags);
146 static const char *ntfs_opts[] = {
147 "from", "export", "uid", "gid", "mode", "caseins", "allnames",
148 "kiconv", "cs_ntfs", "cs_local", NULL
158 struct nameidata ndp;
161 if (vfs_filteropt(mp->mnt_optnew, ntfs_opts))
164 from = vfs_getopts(mp->mnt_optnew, "from", &error);
169 * If updating, check whether changing from read-only to
172 if (mp->mnt_flag & MNT_UPDATE) {
173 if (vfs_flagopt(mp->mnt_optnew, "export", NULL, 0)) {
174 /* Process export requests in vfs_mount.c */
177 printf("ntfs_mount(): MNT_UPDATE not supported\n");
184 * Not an update, or updating the name: look up the name
185 * and verify that it refers to a sensible block device.
187 NDINIT(&ndp, LOOKUP, FOLLOW | LOCKLEAF, UIO_SYSSPACE, from, td);
190 /* can't get devvp!*/
193 NDFREE(&ndp, NDF_ONLY_PNBUF);
196 if (!vn_isdisk(devvp, &err)) {
201 if (mp->mnt_flag & MNT_UPDATE) {
209 if (devvp != ntmp->um_devvp)
210 err = EINVAL; /* needs translation */
223 * Since this is a new mount, we want the names for
224 * the device and the mount point copied in. If an
225 * error occurs, the mountpoint is discarded by the
226 * upper level code. Note that vfs_mount() handles
227 * copying the mountpoint f_mntonname for us, so we
228 * don't have to do it here unless we want to set it
229 * to something other than "path" for some rason.
231 /* Save "mounted from" info for mount point (NULL pad)*/
232 vfs_mountedfrom(mp, from);
234 err = ntfs_mountfs(devvp, mp, td);
243 error_1: /* no state to back out*/
244 /* XXX: missing NDFREE(&ndp, ...) */
251 * Common code for mount and mountroot
254 ntfs_mountfs(devvp, mp, td)
255 register struct vnode *devvp;
260 struct ntfsmount *ntmp;
261 struct cdev *dev = devvp->v_rdev;
262 int error, ronly, i, v;
264 struct g_consumer *cp;
265 struct g_provider *pp;
266 char *cs_ntfs, *cs_local;
268 ronly = (mp->mnt_flag & MNT_RDONLY) != 0;
273 * XXX: Do not allow more than one consumer to open a device
274 * associated with a particular GEOM provider.
275 * This disables multiple read-only mounts of a device,
276 * but it gets rid of panics in vget() when you try to
277 * mount the same device more than once.
279 pp = g_dev_getprovider(devvp->v_rdev);
280 if ((pp != NULL) && ((pp->acr | pp->acw | pp->ace ) != 0))
283 error = g_vfs_open(devvp, &cp, "ntfs", ronly ? 0 : 1);
287 VOP_UNLOCK(devvp, 0, td);
293 error = bread(devvp, BBLOCK, BBSIZE, NOCRED, &bp);
296 ntmp = malloc( sizeof *ntmp, M_NTFSMNT, M_WAITOK | M_ZERO);
297 bcopy( bp->b_data, &ntmp->ntm_bootfile, sizeof(struct bootfile) );
299 * We must not cache the boot block if its size is not exactly
300 * one cluster in order to avoid confusing the buffer cache when
301 * the boot file is read later by ntfs_readntvattr_plain(), which
302 * reads a cluster at a time.
304 if (ntfs_cntob(1) != BBSIZE)
305 bp->b_flags |= B_NOCACHE;
309 if (strncmp((const char *)ntmp->ntm_bootfile.bf_sysid, NTFS_BBID, NTFS_BBIDLEN)) {
311 dprintf(("ntfs_mountfs: invalid boot block\n"));
316 int8_t cpr = ntmp->ntm_mftrecsz;
318 ntmp->ntm_bpmftrec = ntmp->ntm_spc * cpr;
320 ntmp->ntm_bpmftrec = (1 << (-cpr)) / ntmp->ntm_bps;
322 dprintf(("ntfs_mountfs(): bps: %d, spc: %d, media: %x, mftrecsz: %d (%d sects)\n",
323 ntmp->ntm_bps,ntmp->ntm_spc,ntmp->ntm_bootfile.bf_media,
324 ntmp->ntm_mftrecsz,ntmp->ntm_bpmftrec));
325 dprintf(("ntfs_mountfs(): mftcn: 0x%x|0x%x\n",
326 (u_int32_t)ntmp->ntm_mftcn,(u_int32_t)ntmp->ntm_mftmirrcn));
328 ntmp->ntm_mountp = mp;
329 ntmp->ntm_devvp = devvp;
330 if (1 == vfs_scanopt(mp->mnt_optnew, "uid", "%d", &v))
332 if (1 == vfs_scanopt(mp->mnt_optnew, "gid", "%d", &v))
334 if (1 == vfs_scanopt(mp->mnt_optnew, "mode", "%d", &v))
335 ntmp->ntm_mode = v & ACCESSPERMS;
336 vfs_flagopt(mp->mnt_optnew,
337 "caseins", &ntmp->ntm_flag, NTFS_MFLAG_CASEINS);
338 vfs_flagopt(mp->mnt_optnew,
339 "allnames", &ntmp->ntm_flag, NTFS_MFLAG_ALLNAMES);
341 ntmp->ntm_bo = &devvp->v_bufobj;
343 cs_local = vfs_getopts(mp->mnt_optnew, "cs_local", &error);
344 if (error && error != ENOENT)
346 cs_ntfs = vfs_getopts(mp->mnt_optnew, "cs_ntfs", &error);
347 if (error && error != ENOENT)
349 /* Copy in the 8-bit to Unicode conversion table */
350 /* Initialize Unicode to 8-bit table from 8toU table */
351 ntfs_82u_init(ntmp, cs_local, cs_ntfs);
352 if (cs_local != NULL && cs_ntfs != NULL)
353 ntfs_u28_init(ntmp, NULL, cs_local, cs_ntfs);
355 ntfs_u28_init(ntmp, ntmp->ntm_82u, cs_local, cs_ntfs);
357 mp->mnt_data = (qaddr_t)ntmp;
359 dprintf(("ntfs_mountfs(): case-%s,%s uid: %d, gid: %d, mode: %o\n",
360 (ntmp->ntm_flag & NTFS_MFLAG_CASEINS)?"insens.":"sens.",
361 (ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES)?" allnames,":"",
362 ntmp->ntm_uid, ntmp->ntm_gid, ntmp->ntm_mode));
365 * We read in some system nodes to do not allow
366 * reclaim them and to have everytime access to them.
369 int pi[3] = { NTFS_MFTINO, NTFS_ROOTINO, NTFS_BITMAPINO };
370 for (i=0; i<3; i++) {
371 error = VFS_VGET(mp, pi[i], LK_EXCLUSIVE,
372 &(ntmp->ntm_sysvn[pi[i]]));
375 ntmp->ntm_sysvn[pi[i]]->v_vflag |= VV_SYSTEM;
376 VREF(ntmp->ntm_sysvn[pi[i]]);
377 vput(ntmp->ntm_sysvn[pi[i]]);
381 /* read the Unicode lowercase --> uppercase translation table,
383 if ((error = ntfs_toupper_use(mp, ntmp)))
387 * Scan $BitMap and count free clusters
389 error = ntfs_calccfree(ntmp, &ntmp->ntm_cfree);
394 * Read and translate to internal format attribute
402 error = VFS_VGET(mp, NTFS_ATTRDEFINO, LK_EXCLUSIVE, &vp );
406 /* Count valid entries */
408 error = ntfs_readattr(ntmp, VTONT(vp),
410 num * sizeof(ad), sizeof(ad),
414 if (ad.ad_name[0] == 0)
418 /* Alloc memory for attribute definitions */
419 MALLOC(ntmp->ntm_ad, struct ntvattrdef *,
420 num * sizeof(struct ntvattrdef),
421 M_NTFSMNT, M_WAITOK);
423 ntmp->ntm_adnum = num;
425 /* Read them and translate */
427 error = ntfs_readattr(ntmp, VTONT(vp),
429 i * sizeof(ad), sizeof(ad),
435 ntmp->ntm_ad[i].ad_name[j] = ad.ad_name[j];
436 } while(ad.ad_name[j++]);
437 ntmp->ntm_ad[i].ad_namelen = j - 1;
438 ntmp->ntm_ad[i].ad_type = ad.ad_type;
444 mp->mnt_stat.f_fsid.val[0] = dev2udev(dev);
445 mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum;
446 mp->mnt_maxsymlinklen = 0;
448 mp->mnt_flag |= MNT_LOCAL;
453 for(i=0;i<NTFS_SYSNODESNUM;i++)
454 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]);
456 if (vflush(mp, 0, 0, td))
457 dprintf(("ntfs_mountfs: vflush failed\n"));
478 struct ntfsmount *ntmp;
481 dprintf(("ntfs_unmount: unmounting...\n"));
482 ntmp = VFSTONTFS(mp);
485 if(mntflags & MNT_FORCE)
488 dprintf(("ntfs_unmount: vflushing...\n"));
489 error = vflush(mp, 0, flags | SKIPSYSTEM, td);
491 printf("ntfs_unmount: vflush failed: %d\n",error);
495 /* Check if only system vnodes are rest */
496 for(i=0;i<NTFS_SYSNODESNUM;i++)
497 if((ntmp->ntm_sysvn[i]) &&
498 (vrefcnt(ntmp->ntm_sysvn[i]) > 1)) return (EBUSY);
500 /* Dereference all system vnodes */
501 for(i=0;i<NTFS_SYSNODESNUM;i++)
502 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]);
504 /* vflush system vnodes */
505 error = vflush(mp, 0, flags, td);
507 printf("ntfs_unmount: vflush failed(sysnodes): %d\n",error);
509 vinvalbuf(ntmp->ntm_devvp, V_SAVE, td, 0, 0);
513 g_vfs_close(ntmp->ntm_cp, td);
517 vrele(ntmp->ntm_devvp);
519 /* free the toupper table, if this has been last mounted ntfs volume */
520 ntfs_toupper_unuse();
522 dprintf(("ntfs_umount: freeing memory...\n"));
523 ntfs_u28_uninit(ntmp);
524 ntfs_82u_uninit(ntmp);
525 mp->mnt_data = (qaddr_t)0;
527 mp->mnt_flag &= ~MNT_LOCAL;
529 FREE(ntmp->ntm_ad, M_NTFSMNT);
530 FREE(ntmp, M_NTFSMNT);
544 dprintf(("ntfs_root(): sysvn: %p\n",
545 VFSTONTFS(mp)->ntm_sysvn[NTFS_ROOTINO]));
546 error = VFS_VGET(mp, (ino_t)NTFS_ROOTINO, LK_EXCLUSIVE, &nvp);
548 printf("ntfs_root: VFS_VGET failed: %d\n",error);
558 struct ntfsmount *ntmp,
567 vp = ntmp->ntm_sysvn[NTFS_BITMAPINO];
569 bmsize = VTOF(vp)->f_size;
571 MALLOC(tmp, u_int8_t *, bmsize, M_TEMP, M_WAITOK);
573 error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL,
574 0, bmsize, tmp, NULL);
578 for(i=0;i<bmsize;i++)
580 if(~tmp[i] & (1 << j)) cfree++;
594 struct ntfsmount *ntmp = VFSTONTFS(mp);
595 u_int64_t mftsize,mftallocated;
597 dprintf(("ntfs_statfs():\n"));
599 mftsize = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_size;
600 mftallocated = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_allocated;
602 sbp->f_type = mp->mnt_vfc->vfc_typenum;
603 sbp->f_bsize = ntmp->ntm_bps;
604 sbp->f_iosize = ntmp->ntm_bps * ntmp->ntm_spc;
605 sbp->f_blocks = ntmp->ntm_bootfile.bf_spv;
606 sbp->f_bfree = sbp->f_bavail = ntfs_cntobn(ntmp->ntm_cfree);
607 sbp->f_ffree = sbp->f_bfree / ntmp->ntm_bpmftrec;
608 sbp->f_files = mftallocated / ntfs_bntob(ntmp->ntm_bpmftrec) +
610 sbp->f_flags = mp->mnt_flag;
623 struct ntfid *ntfhp = (struct ntfid *)fhp;
626 ddprintf(("ntfs_fhtovp(): %d\n", ntfhp->ntfid_ino));
628 if ((error = VFS_VGET(mp, ntfhp->ntfid_ino, LK_EXCLUSIVE, &nvp)) != 0) {
632 /* XXX as unlink/rmdir/mkdir/creat are not currently possible
633 * with NTFS, we don't need to check anything else for now */
635 vnode_create_vobject(nvp, VTOF(nvp)->f_size, curthread);
651 register struct ntfsmount *ntmp;
657 dprintf(("ntfs_vgetex: ino: %d, attr: 0x%x:%s, lkf: 0x%lx, f: 0x%lx\n",
658 ino, attrtype, attrname?attrname:"", (u_long)lkflags,
661 ntmp = VFSTONTFS(mp);
665 error = ntfs_ntlookup(ntmp, ino, &ip);
667 printf("ntfs_vget: ntfs_ntget failed\n");
671 /* It may be not initialized fully, so force load it */
672 if (!(flags & VG_DONTLOADIN) && !(ip->i_flag & IN_LOADED)) {
673 error = ntfs_loadntnode(ntmp, ip);
675 printf("ntfs_vget: CAN'T LOAD ATTRIBUTES FOR INO: %d\n",
682 error = ntfs_fget(ntmp, ip, attrtype, attrname, &fp);
684 printf("ntfs_vget: ntfs_fget failed\n");
690 if (!(flags & VG_DONTVALIDFN) && !(fp->f_flag & FN_VALID)) {
691 if ((ip->i_frflag & NTFS_FRFLAG_DIR) &&
692 (fp->f_attrtype == NTFS_A_DATA && fp->f_attrname == NULL)) {
694 } else if (flags & VG_EXT) {
696 fp->f_size = fp->f_allocated = 0;
700 error = ntfs_filesize(ntmp, fp,
701 &fp->f_size, &fp->f_allocated);
708 fp->f_flag |= FN_VALID;
712 vget(FTOV(fp), lkflags, td);
718 error = getnewvnode("ntfs", ntmp->ntm_mountp, &ntfs_vnodeops, &vp);
724 /* XXX: Too early for mpsafe fs, lacks vnode lock */
725 error = insmntque(vp, ntmp->ntm_mountp);
731 dprintf(("ntfs_vget: vnode: %p for ntnode: %d\n", vp,ino));
737 vp->v_bufobj.bo_ops = &ntfs_vnbufops;
738 vp->v_bufobj.bo_private = vp;
740 if (ino == NTFS_ROOTINO)
741 vp->v_vflag |= VV_ROOT;
745 if (lkflags & LK_TYPE_MASK) {
746 error = vn_lock(vp, lkflags, td);
765 return ntfs_vgetex(mp, ino, NTFS_A_DATA, NULL, lkflags, 0,
770 ntfs_bufstrategy(struct bufobj *bo, struct buf *bp)
776 KASSERT(bo == &vp->v_bufobj, ("BO/VP mismatch: vp %p bo %p != %p",
777 vp, &vp->v_bufobj, bo));
778 rc = VOP_STRATEGY(vp, bp);
779 KASSERT(rc == 0, ("NTFS VOP_STRATEGY failed: bp=%p, "
780 "vp=%p, rc=%d", bp, vp, rc));
783 static struct vfsops ntfs_vfsops = {
784 .vfs_fhtovp = ntfs_fhtovp,
785 .vfs_init = ntfs_init,
786 .vfs_cmount = ntfs_cmount,
787 .vfs_mount = ntfs_mount,
788 .vfs_root = ntfs_root,
789 .vfs_statfs = ntfs_statfs,
790 .vfs_uninit = ntfs_uninit,
791 .vfs_unmount = ntfs_unmount,
792 .vfs_vget = ntfs_vget,
794 VFS_SET(ntfs_vfsops, ntfs, 0);
795 MODULE_VERSION(ntfs, 1);