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>
38 #include <sys/kernel.h>
39 #include <sys/vnode.h>
40 #include <sys/mount.h>
43 #include <sys/fcntl.h>
44 #include <sys/malloc.h>
46 #include <sys/systm.h>
48 #include <geom/geom.h>
49 #include <geom/geom_vfs.h>
52 #include <vm/vm_param.h>
53 #include <vm/vm_page.h>
54 #include <vm/vm_object.h>
55 #include <vm/vm_extern.h>
57 /*#define NTFS_DEBUG 1*/
58 #include <fs/ntfs/ntfs.h>
59 #include <fs/ntfs/ntfs_inode.h>
60 #include <fs/ntfs/ntfs_subr.h>
61 #include <fs/ntfs/ntfs_vfsops.h>
62 #include <fs/ntfs/ntfs_ihash.h>
63 #include <fs/ntfs/ntfsmount.h>
65 static MALLOC_DEFINE(M_NTFSMNT, "ntfs_mount", "NTFS mount structure");
66 MALLOC_DEFINE(M_NTFSNTNODE,"ntfs_ntnode", "NTFS ntnode information");
67 MALLOC_DEFINE(M_NTFSFNODE,"ntfs_fnode", "NTFS fnode information");
68 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();
121 struct ntfs_args args;
122 struct export_args exp;
125 error = copyin(data, &args, sizeof(args));
128 vfs_oexport_conv(&args.export, &exp);
129 ma = mount_argsu(ma, "from", args.fspec, MAXPATHLEN);
130 ma = mount_arg(ma, "export", &exp, sizeof(exp));
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
152 ntfs_mount(struct mount *mp)
156 struct nameidata ndp;
161 if (vfs_filteropt(mp->mnt_optnew, ntfs_opts))
164 /* Force mount as read-only. */
166 mp->mnt_flag |= MNT_RDONLY;
169 from = vfs_getopts(mp->mnt_optnew, "from", &error);
174 * If updating, check whether changing from read-only to
177 if (mp->mnt_flag & MNT_UPDATE) {
178 if (vfs_flagopt(mp->mnt_optnew, "export", NULL, 0)) {
179 /* Process export requests in vfs_mount.c */
182 printf("ntfs_mount(): MNT_UPDATE not supported\n");
188 * Not an update, or updating the name: look up the name
189 * and verify that it refers to a sensible block device.
191 NDINIT(&ndp, LOOKUP, FOLLOW | LOCKLEAF, UIO_SYSSPACE, from, td);
195 NDFREE(&ndp, NDF_ONLY_PNBUF);
198 if (!vn_isdisk(devvp, &err)) {
204 * If mount by non-root, then verify that user has necessary
205 * permissions on the device.
207 err = VOP_ACCESS(devvp, VREAD, td->td_ucred, td);
209 err = priv_check(td, PRIV_VFS_MOUNT_PERM);
217 * Since this is a new mount, we want the names for the device and
218 * the mount point copied in. If an error occurs, the mountpoint is
219 * discarded by the upper level code. Note that vfs_mount() handles
220 * copying the mountpoint f_mntonname for us, so we don't have to do
221 * it here unless we want to set it to something other than "path"
225 err = ntfs_mountfs(devvp, mp, td);
228 /* Save "mounted from" info for mount point. */
229 vfs_mountedfrom(mp, from);
236 * Common code for mount and mountroot
239 ntfs_mountfs(devvp, mp, td)
240 register struct vnode *devvp;
245 struct ntfsmount *ntmp;
246 struct cdev *dev = devvp->v_rdev;
249 struct g_consumer *cp;
250 struct g_provider *pp;
251 char *cs_ntfs, *cs_local;
257 * XXX: Do not allow more than one consumer to open a device
258 * associated with a particular GEOM provider.
259 * This disables multiple read-only mounts of a device,
260 * but it gets rid of panics in vget() when you try to
261 * mount the same device more than once.
263 pp = g_dev_getprovider(devvp->v_rdev);
264 if ((pp != NULL) && ((pp->acr | pp->acw | pp->ace ) != 0))
267 error = g_vfs_open(devvp, &cp, "ntfs", 0);
271 VOP_UNLOCK(devvp, 0);
277 error = bread(devvp, BBLOCK, BBSIZE, NOCRED, &bp);
280 ntmp = malloc( sizeof *ntmp, M_NTFSMNT, M_WAITOK | M_ZERO);
281 bcopy( bp->b_data, &ntmp->ntm_bootfile, sizeof(struct bootfile) );
283 * We must not cache the boot block if its size is not exactly
284 * one cluster in order to avoid confusing the buffer cache when
285 * the boot file is read later by ntfs_readntvattr_plain(), which
286 * reads a cluster at a time.
288 if (ntfs_cntob(1) != BBSIZE)
289 bp->b_flags |= B_NOCACHE;
293 if (strncmp((const char *)ntmp->ntm_bootfile.bf_sysid, NTFS_BBID, NTFS_BBIDLEN)) {
295 dprintf(("ntfs_mountfs: invalid boot block\n"));
300 int8_t cpr = ntmp->ntm_mftrecsz;
302 ntmp->ntm_bpmftrec = ntmp->ntm_spc * cpr;
304 ntmp->ntm_bpmftrec = (1 << (-cpr)) / ntmp->ntm_bps;
306 ntmp->ntm_multiplier = ntmp->ntm_bps / DEV_BSIZE;
308 dprintf(("ntfs_mountfs(): bps: %d, spc: %d, media: %x, mftrecsz: %d (%d sects)\n",
309 ntmp->ntm_bps,ntmp->ntm_spc,ntmp->ntm_bootfile.bf_media,
310 ntmp->ntm_mftrecsz,ntmp->ntm_bpmftrec));
311 dprintf(("ntfs_mountfs(): mftcn: 0x%x|0x%x\n",
312 (u_int32_t)ntmp->ntm_mftcn,(u_int32_t)ntmp->ntm_mftmirrcn));
314 ntmp->ntm_mountp = mp;
315 ntmp->ntm_devvp = devvp;
316 if (vfs_scanopt(mp->mnt_optnew, "uid", "%d", &v) == 1)
318 if (vfs_scanopt(mp->mnt_optnew, "gid", "%d", &v) == 1)
320 if (vfs_scanopt(mp->mnt_optnew, "mode", "%d", &v) == 1)
321 ntmp->ntm_mode = v & ACCESSPERMS;
322 vfs_flagopt(mp->mnt_optnew,
323 "caseins", &ntmp->ntm_flag, NTFS_MFLAG_CASEINS);
324 vfs_flagopt(mp->mnt_optnew,
325 "allnames", &ntmp->ntm_flag, NTFS_MFLAG_ALLNAMES);
327 ntmp->ntm_bo = &devvp->v_bufobj;
329 cs_local = vfs_getopts(mp->mnt_optnew, "cs_local", &error);
330 if (error && error != ENOENT)
332 cs_ntfs = vfs_getopts(mp->mnt_optnew, "cs_ntfs", &error);
333 if (error && error != ENOENT)
335 /* Copy in the 8-bit to Unicode conversion table */
336 /* Initialize Unicode to 8-bit table from 8toU table */
337 ntfs_82u_init(ntmp, cs_local, cs_ntfs);
338 if (cs_local != NULL && cs_ntfs != NULL)
339 ntfs_u28_init(ntmp, NULL, cs_local, cs_ntfs);
341 ntfs_u28_init(ntmp, ntmp->ntm_82u, cs_local, cs_ntfs);
345 dprintf(("ntfs_mountfs(): case-%s,%s uid: %d, gid: %d, mode: %o\n",
346 (ntmp->ntm_flag & NTFS_MFLAG_CASEINS)?"insens.":"sens.",
347 (ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES)?" allnames,":"",
348 ntmp->ntm_uid, ntmp->ntm_gid, ntmp->ntm_mode));
351 * We read in some system nodes to do not allow
352 * reclaim them and to have everytime access to them.
355 int pi[3] = { NTFS_MFTINO, NTFS_ROOTINO, NTFS_BITMAPINO };
356 for (i=0; i<3; i++) {
357 error = VFS_VGET(mp, pi[i], LK_EXCLUSIVE,
358 &(ntmp->ntm_sysvn[pi[i]]));
361 ntmp->ntm_sysvn[pi[i]]->v_vflag |= VV_SYSTEM;
362 VREF(ntmp->ntm_sysvn[pi[i]]);
363 vput(ntmp->ntm_sysvn[pi[i]]);
367 /* read the Unicode lowercase --> uppercase translation table,
369 if ((error = ntfs_toupper_use(mp, ntmp)))
373 * Scan $BitMap and count free clusters
375 error = ntfs_calccfree(ntmp, &ntmp->ntm_cfree);
380 * Read and translate to internal format attribute
388 error = VFS_VGET(mp, NTFS_ATTRDEFINO, LK_EXCLUSIVE, &vp );
392 /* Count valid entries */
394 error = ntfs_readattr(ntmp, VTONT(vp),
396 num * sizeof(ad), sizeof(ad),
400 if (ad.ad_name[0] == 0)
404 /* Alloc memory for attribute definitions */
405 ntmp->ntm_ad = malloc(num * sizeof(struct ntvattrdef),
406 M_NTFSMNT, M_WAITOK);
408 ntmp->ntm_adnum = num;
410 /* Read them and translate */
412 error = ntfs_readattr(ntmp, VTONT(vp),
414 i * sizeof(ad), sizeof(ad),
420 ntmp->ntm_ad[i].ad_name[j] = ad.ad_name[j];
421 } while(ad.ad_name[j++]);
422 ntmp->ntm_ad[i].ad_namelen = j - 1;
423 ntmp->ntm_ad[i].ad_type = ad.ad_type;
429 mp->mnt_stat.f_fsid.val[0] = dev2udev(dev);
430 mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum;
431 mp->mnt_maxsymlinklen = 0;
433 mp->mnt_flag |= MNT_LOCAL;
438 for(i=0;i<NTFS_SYSNODESNUM;i++)
439 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]);
441 if (vflush(mp, 0, 0, td))
442 dprintf(("ntfs_mountfs: vflush failed\n"));
463 struct ntfsmount *ntmp;
466 dprintf(("ntfs_unmount: unmounting...\n"));
468 ntmp = VFSTONTFS(mp);
471 if(mntflags & MNT_FORCE)
474 dprintf(("ntfs_unmount: vflushing...\n"));
475 error = vflush(mp, 0, flags | SKIPSYSTEM, td);
477 printf("ntfs_unmount: vflush failed: %d\n",error);
481 /* Check if only system vnodes are rest */
482 for(i=0;i<NTFS_SYSNODESNUM;i++)
483 if((ntmp->ntm_sysvn[i]) &&
484 (vrefcnt(ntmp->ntm_sysvn[i]) > 1)) return (EBUSY);
486 /* Dereference all system vnodes */
487 for(i=0;i<NTFS_SYSNODESNUM;i++)
488 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]);
490 /* vflush system vnodes */
491 error = vflush(mp, 0, flags, td);
493 printf("ntfs_unmount: vflush failed(sysnodes): %d\n",error);
495 vinvalbuf(ntmp->ntm_devvp, V_SAVE, 0, 0);
499 g_vfs_close(ntmp->ntm_cp);
503 vrele(ntmp->ntm_devvp);
505 /* free the toupper table, if this has been last mounted ntfs volume */
506 ntfs_toupper_unuse();
508 dprintf(("ntfs_umount: freeing memory...\n"));
509 ntfs_u28_uninit(ntmp);
510 ntfs_82u_uninit(ntmp);
513 mp->mnt_flag &= ~MNT_LOCAL;
515 free(ntmp->ntm_ad, M_NTFSMNT);
516 free(ntmp, M_NTFSMNT);
529 dprintf(("ntfs_root(): sysvn: %p\n",
530 VFSTONTFS(mp)->ntm_sysvn[NTFS_ROOTINO]));
531 error = VFS_VGET(mp, (ino_t)NTFS_ROOTINO, LK_EXCLUSIVE, &nvp);
533 printf("ntfs_root: VFS_VGET failed: %d\n",error);
543 struct ntfsmount *ntmp,
552 vp = ntmp->ntm_sysvn[NTFS_BITMAPINO];
554 bmsize = VTOF(vp)->f_size;
556 tmp = malloc(bmsize, M_TEMP, M_WAITOK);
558 error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL,
559 0, bmsize, tmp, NULL);
563 for(i=0;i<bmsize;i++)
565 if(~tmp[i] & (1 << j)) cfree++;
578 struct ntfsmount *ntmp = VFSTONTFS(mp);
579 u_int64_t mftsize,mftallocated;
581 dprintf(("ntfs_statfs():\n"));
583 mftsize = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_size;
584 mftallocated = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_allocated;
586 sbp->f_type = mp->mnt_vfc->vfc_typenum;
587 sbp->f_bsize = ntmp->ntm_bps;
588 sbp->f_iosize = ntmp->ntm_bps * ntmp->ntm_spc;
589 sbp->f_blocks = ntmp->ntm_bootfile.bf_spv;
590 sbp->f_bfree = sbp->f_bavail = ntfs_cntobn(ntmp->ntm_cfree);
591 sbp->f_ffree = sbp->f_bfree / ntmp->ntm_bpmftrec;
592 sbp->f_files = mftallocated / ntfs_bntob(ntmp->ntm_bpmftrec) +
594 sbp->f_flags = mp->mnt_flag;
608 struct ntfid *ntfhp = (struct ntfid *)fhp;
611 ddprintf(("ntfs_fhtovp(): %d\n", ntfhp->ntfid_ino));
613 if ((error = VFS_VGET(mp, ntfhp->ntfid_ino, LK_EXCLUSIVE, &nvp)) != 0) {
617 /* XXX as unlink/rmdir/mkdir/creat are not currently possible
618 * with NTFS, we don't need to check anything else for now */
620 vnode_create_vobject(nvp, VTOF(nvp)->f_size, curthread);
636 register struct ntfsmount *ntmp;
642 dprintf(("ntfs_vgetex: ino: %d, attr: 0x%x:%s, lkf: 0x%lx, f: 0x%lx\n",
643 ino, attrtype, attrname?attrname:"", (u_long)lkflags,
646 ntmp = VFSTONTFS(mp);
650 error = ntfs_ntlookup(ntmp, ino, &ip);
652 printf("ntfs_vget: ntfs_ntget failed\n");
656 /* It may be not initialized fully, so force load it */
657 if (!(flags & VG_DONTLOADIN) && !(ip->i_flag & IN_LOADED)) {
658 error = ntfs_loadntnode(ntmp, ip);
660 printf("ntfs_vget: CAN'T LOAD ATTRIBUTES FOR INO: %d\n",
667 error = ntfs_fget(ntmp, ip, attrtype, attrname, &fp);
669 printf("ntfs_vget: ntfs_fget failed\n");
675 if (!(flags & VG_DONTVALIDFN) && !(fp->f_flag & FN_VALID)) {
676 if ((ip->i_frflag & NTFS_FRFLAG_DIR) &&
677 (fp->f_attrtype == NTFS_A_DATA && fp->f_attrname == NULL)) {
679 } else if (flags & VG_EXT) {
681 fp->f_size = fp->f_allocated = 0;
685 error = ntfs_filesize(ntmp, fp,
686 &fp->f_size, &fp->f_allocated);
693 fp->f_flag |= FN_VALID;
697 vget(FTOV(fp), lkflags, td);
703 error = getnewvnode("ntfs", ntmp->ntm_mountp, &ntfs_vnodeops, &vp);
709 /* XXX: Too early for mpsafe fs, lacks vnode lock */
710 error = insmntque(vp, ntmp->ntm_mountp);
716 dprintf(("ntfs_vget: vnode: %p for ntnode: %d\n", vp,ino));
722 vp->v_bufobj.bo_ops = &ntfs_vnbufops;
723 vp->v_bufobj.bo_private = vp;
725 if (ino == NTFS_ROOTINO)
726 vp->v_vflag |= VV_ROOT;
730 if (lkflags & LK_TYPE_MASK) {
731 error = vn_lock(vp, lkflags);
750 return ntfs_vgetex(mp, ino, NTFS_A_DATA, NULL, lkflags, 0,
755 ntfs_bufstrategy(struct bufobj *bo, struct buf *bp)
761 KASSERT(bo == &vp->v_bufobj, ("BO/VP mismatch: vp %p bo %p != %p",
762 vp, &vp->v_bufobj, bo));
763 rc = VOP_STRATEGY(vp, bp);
764 KASSERT(rc == 0, ("NTFS VOP_STRATEGY failed: bp=%p, "
765 "vp=%p, rc=%d", bp, vp, rc));
768 static struct vfsops ntfs_vfsops = {
769 .vfs_fhtovp = ntfs_fhtovp,
770 .vfs_init = ntfs_init,
771 .vfs_cmount = ntfs_cmount,
772 .vfs_mount = ntfs_mount,
773 .vfs_root = ntfs_root,
774 .vfs_statfs = ntfs_statfs,
775 .vfs_uninit = ntfs_uninit,
776 .vfs_unmount = ntfs_unmount,
777 .vfs_vget = ntfs_vget,
779 VFS_SET(ntfs_vfsops, ntfs, 0);
780 MODULE_VERSION(ntfs, 1);