| 1 | /* $NetBSD: ntfs_vfsops.c,v 1.104 2015/03/28 19:24:05 maxv Exp $ */ |
| 2 | |
| 3 | /*- |
| 4 | * Copyright (c) 1998, 1999 Semen Ustimenko |
| 5 | * All rights reserved. |
| 6 | * |
| 7 | * Redistribution and use in source and binary forms, with or without |
| 8 | * modification, are permitted provided that the following conditions |
| 9 | * are met: |
| 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. |
| 15 | * |
| 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 |
| 26 | * SUCH DAMAGE. |
| 27 | * |
| 28 | * Id: ntfs_vfsops.c,v 1.7 1999/05/31 11:28:30 phk Exp |
| 29 | */ |
| 30 | |
| 31 | #include <sys/cdefs.h> |
| 32 | __KERNEL_RCSID(0, "$NetBSD: ntfs_vfsops.c,v 1.104 2015/03/28 19:24:05 maxv Exp $" ); |
| 33 | |
| 34 | #include <sys/param.h> |
| 35 | #include <sys/systm.h> |
| 36 | #include <sys/namei.h> |
| 37 | #include <sys/proc.h> |
| 38 | #include <sys/kernel.h> |
| 39 | #include <sys/vnode.h> |
| 40 | #include <sys/mount.h> |
| 41 | #include <sys/buf.h> |
| 42 | #include <sys/fcntl.h> |
| 43 | #include <sys/malloc.h> |
| 44 | #include <sys/sysctl.h> |
| 45 | #include <sys/device.h> |
| 46 | #include <sys/conf.h> |
| 47 | #include <sys/kauth.h> |
| 48 | #include <sys/module.h> |
| 49 | |
| 50 | #include <uvm/uvm_extern.h> |
| 51 | |
| 52 | #include <miscfs/genfs/genfs.h> |
| 53 | #include <miscfs/specfs/specdev.h> |
| 54 | |
| 55 | #include <fs/ntfs/ntfs.h> |
| 56 | #include <fs/ntfs/ntfs_inode.h> |
| 57 | #include <fs/ntfs/ntfs_subr.h> |
| 58 | #include <fs/ntfs/ntfs_vfsops.h> |
| 59 | #include <fs/ntfs/ntfs_ihash.h> |
| 60 | #include <fs/ntfs/ntfsmount.h> |
| 61 | |
| 62 | MODULE(MODULE_CLASS_VFS, ntfs, NULL); |
| 63 | |
| 64 | MALLOC_JUSTDEFINE(M_NTFSMNT, "NTFS mount" , "NTFS mount structure" ); |
| 65 | MALLOC_JUSTDEFINE(M_NTFSNTNODE,"NTFS ntnode" , "NTFS ntnode information" ); |
| 66 | MALLOC_JUSTDEFINE(M_NTFSDIR,"NTFS dir" , "NTFS dir buffer" ); |
| 67 | |
| 68 | static int ntfs_superblock_validate(struct ntfsmount *); |
| 69 | static int ntfs_mount(struct mount *, const char *, void *, size_t *); |
| 70 | static int ntfs_root(struct mount *, struct vnode **); |
| 71 | static int ntfs_start(struct mount *, int); |
| 72 | static int ntfs_statvfs(struct mount *, struct statvfs *); |
| 73 | static int ntfs_sync(struct mount *, int, kauth_cred_t); |
| 74 | static int ntfs_unmount(struct mount *, int); |
| 75 | static int ntfs_vget(struct mount *mp, ino_t ino, |
| 76 | struct vnode **vpp); |
| 77 | static int ntfs_loadvnode(struct mount *, struct vnode *, |
| 78 | const void *, size_t, const void **); |
| 79 | static int ntfs_mountfs(struct vnode *, struct mount *, |
| 80 | struct ntfs_args *, struct lwp *); |
| 81 | static int ntfs_vptofh(struct vnode *, struct fid *, size_t *); |
| 82 | |
| 83 | static void ntfs_init(void); |
| 84 | static void ntfs_reinit(void); |
| 85 | static void ntfs_done(void); |
| 86 | static int ntfs_fhtovp(struct mount *, struct fid *, |
| 87 | struct vnode **); |
| 88 | static int ntfs_mountroot(void); |
| 89 | |
| 90 | static const struct genfs_ops ntfs_genfsops = { |
| 91 | .gop_write = genfs_compat_gop_write, |
| 92 | }; |
| 93 | |
| 94 | static struct sysctllog *ntfs_sysctl_log; |
| 95 | |
| 96 | static int |
| 97 | ntfs_mountroot(void) |
| 98 | { |
| 99 | struct mount *mp; |
| 100 | struct lwp *l = curlwp; /* XXX */ |
| 101 | int error; |
| 102 | struct ntfs_args args; |
| 103 | |
| 104 | if (device_class(root_device) != DV_DISK) |
| 105 | return (ENODEV); |
| 106 | |
| 107 | if ((error = vfs_rootmountalloc(MOUNT_NTFS, "root_device" , &mp))) { |
| 108 | vrele(rootvp); |
| 109 | return (error); |
| 110 | } |
| 111 | |
| 112 | args.flag = 0; |
| 113 | args.uid = 0; |
| 114 | args.gid = 0; |
| 115 | args.mode = 0777; |
| 116 | |
| 117 | if ((error = ntfs_mountfs(rootvp, mp, &args, l)) != 0) { |
| 118 | vfs_unbusy(mp, false, NULL); |
| 119 | vfs_destroy(mp); |
| 120 | return (error); |
| 121 | } |
| 122 | |
| 123 | mountlist_append(mp); |
| 124 | (void)ntfs_statvfs(mp, &mp->mnt_stat); |
| 125 | vfs_unbusy(mp, false, NULL); |
| 126 | return (0); |
| 127 | } |
| 128 | |
| 129 | static void |
| 130 | ntfs_init(void) |
| 131 | { |
| 132 | |
| 133 | malloc_type_attach(M_NTFSMNT); |
| 134 | malloc_type_attach(M_NTFSNTNODE); |
| 135 | malloc_type_attach(M_NTFSDIR); |
| 136 | malloc_type_attach(M_NTFSNTVATTR); |
| 137 | malloc_type_attach(M_NTFSRDATA); |
| 138 | malloc_type_attach(M_NTFSDECOMP); |
| 139 | malloc_type_attach(M_NTFSRUN); |
| 140 | ntfs_nthashinit(); |
| 141 | ntfs_toupper_init(); |
| 142 | } |
| 143 | |
| 144 | static void |
| 145 | ntfs_reinit(void) |
| 146 | { |
| 147 | ntfs_nthashreinit(); |
| 148 | } |
| 149 | |
| 150 | static void |
| 151 | ntfs_done(void) |
| 152 | { |
| 153 | ntfs_nthashdone(); |
| 154 | malloc_type_detach(M_NTFSMNT); |
| 155 | malloc_type_detach(M_NTFSNTNODE); |
| 156 | malloc_type_detach(M_NTFSDIR); |
| 157 | malloc_type_detach(M_NTFSNTVATTR); |
| 158 | malloc_type_detach(M_NTFSRDATA); |
| 159 | malloc_type_detach(M_NTFSDECOMP); |
| 160 | malloc_type_detach(M_NTFSRUN); |
| 161 | } |
| 162 | |
| 163 | static int |
| 164 | ntfs_mount(struct mount *mp, const char *path, void *data, size_t *data_len) |
| 165 | { |
| 166 | struct lwp *l = curlwp; |
| 167 | int err = 0, flags; |
| 168 | struct vnode *devvp; |
| 169 | struct ntfs_args *args = data; |
| 170 | |
| 171 | if (args == NULL) |
| 172 | return EINVAL; |
| 173 | if (*data_len < sizeof *args) |
| 174 | return EINVAL; |
| 175 | |
| 176 | if (mp->mnt_flag & MNT_GETARGS) { |
| 177 | struct ntfsmount *ntmp = VFSTONTFS(mp); |
| 178 | if (ntmp == NULL) |
| 179 | return EIO; |
| 180 | args->fspec = NULL; |
| 181 | args->uid = ntmp->ntm_uid; |
| 182 | args->gid = ntmp->ntm_gid; |
| 183 | args->mode = ntmp->ntm_mode; |
| 184 | args->flag = ntmp->ntm_flag; |
| 185 | *data_len = sizeof *args; |
| 186 | return 0; |
| 187 | } |
| 188 | /* |
| 189 | *** |
| 190 | * Mounting non-root file system or updating a file system |
| 191 | *** |
| 192 | */ |
| 193 | |
| 194 | /* |
| 195 | * If updating, check whether changing from read-only to |
| 196 | * read/write; if there is no device name, that's all we do. |
| 197 | */ |
| 198 | if (mp->mnt_flag & MNT_UPDATE) { |
| 199 | printf("ntfs_mount(): MNT_UPDATE not supported\n" ); |
| 200 | return (EINVAL); |
| 201 | } |
| 202 | |
| 203 | /* |
| 204 | * Not an update, or updating the name: look up the name |
| 205 | * and verify that it refers to a sensible block device. |
| 206 | */ |
| 207 | err = namei_simple_user(args->fspec, |
| 208 | NSM_FOLLOW_NOEMULROOT, &devvp); |
| 209 | if (err) |
| 210 | return (err); |
| 211 | |
| 212 | if (devvp->v_type != VBLK) { |
| 213 | err = ENOTBLK; |
| 214 | goto fail; |
| 215 | } |
| 216 | if (bdevsw_lookup(devvp->v_rdev) == NULL) { |
| 217 | err = ENXIO; |
| 218 | goto fail; |
| 219 | } |
| 220 | if (mp->mnt_flag & MNT_UPDATE) { |
| 221 | #if 0 |
| 222 | /* |
| 223 | ******************** |
| 224 | * UPDATE |
| 225 | ******************** |
| 226 | */ |
| 227 | |
| 228 | if (devvp != ntmp->um_devvp) { |
| 229 | err = EINVAL; /* needs translation */ |
| 230 | goto fail; |
| 231 | } |
| 232 | |
| 233 | /* |
| 234 | * Update device name only on success |
| 235 | */ |
| 236 | err = set_statvfs_info(NULL, UIO_USERSPACE, args->fspec, |
| 237 | UIO_USERSPACE, mp->mnt_op->vfs_name, mp, p); |
| 238 | if (err) |
| 239 | goto fail; |
| 240 | |
| 241 | vrele(devvp); |
| 242 | #endif |
| 243 | } else { |
| 244 | /* |
| 245 | ******************** |
| 246 | * NEW MOUNT |
| 247 | ******************** |
| 248 | */ |
| 249 | |
| 250 | /* |
| 251 | * Since this is a new mount, we want the names for |
| 252 | * the device and the mount point copied in. If an |
| 253 | * error occurs, the mountpoint is discarded by the |
| 254 | * upper level code. |
| 255 | */ |
| 256 | |
| 257 | /* Save "last mounted on" info for mount point (NULL pad)*/ |
| 258 | err = set_statvfs_info(path, UIO_USERSPACE, args->fspec, |
| 259 | UIO_USERSPACE, mp->mnt_op->vfs_name, mp, l); |
| 260 | if (err) |
| 261 | goto fail; |
| 262 | |
| 263 | if (mp->mnt_flag & MNT_RDONLY) |
| 264 | flags = FREAD; |
| 265 | else |
| 266 | flags = FREAD|FWRITE; |
| 267 | vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); |
| 268 | err = VOP_OPEN(devvp, flags, FSCRED); |
| 269 | VOP_UNLOCK(devvp); |
| 270 | if (err) |
| 271 | goto fail; |
| 272 | err = ntfs_mountfs(devvp, mp, args, l); |
| 273 | if (err) { |
| 274 | vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); |
| 275 | (void)VOP_CLOSE(devvp, flags, NOCRED); |
| 276 | VOP_UNLOCK(devvp); |
| 277 | goto fail; |
| 278 | } |
| 279 | } |
| 280 | |
| 281 | /* |
| 282 | * Initialize FS stat information in mount struct; uses both |
| 283 | * mp->mnt_stat.f_mntonname and mp->mnt_stat.f_mntfromname |
| 284 | * |
| 285 | * This code is common to root and non-root mounts |
| 286 | */ |
| 287 | (void)VFS_STATVFS(mp, &mp->mnt_stat); |
| 288 | return (err); |
| 289 | |
| 290 | fail: |
| 291 | vrele(devvp); |
| 292 | return (err); |
| 293 | } |
| 294 | |
| 295 | static int |
| 296 | ntfs_superblock_validate(struct ntfsmount *ntmp) |
| 297 | { |
| 298 | /* Sanity checks. XXX: More checks are probably needed. */ |
| 299 | if (strncmp(ntmp->ntm_bootfile.bf_sysid, NTFS_BBID, NTFS_BBIDLEN)) { |
| 300 | dprintf(("ntfs_superblock_validate: invalid boot block\n" )); |
| 301 | return EINVAL; |
| 302 | } |
| 303 | if (ntmp->ntm_bps == 0) { |
| 304 | dprintf(("ntfs_superblock_validate: invalid bytes per sector\n" )); |
| 305 | return EINVAL; |
| 306 | } |
| 307 | if (ntmp->ntm_spc == 0) { |
| 308 | dprintf(("ntfs_superblock_validate: invalid sectors per cluster\n" )); |
| 309 | return EINVAL; |
| 310 | } |
| 311 | return 0; |
| 312 | } |
| 313 | |
| 314 | /* |
| 315 | * Common code for mount and mountroot |
| 316 | */ |
| 317 | int |
| 318 | ntfs_mountfs(struct vnode *devvp, struct mount *mp, struct ntfs_args *argsp, struct lwp *l) |
| 319 | { |
| 320 | struct buf *bp; |
| 321 | struct ntfsmount *ntmp; |
| 322 | dev_t dev = devvp->v_rdev; |
| 323 | int error, i; |
| 324 | struct vnode *vp; |
| 325 | |
| 326 | ntmp = NULL; |
| 327 | |
| 328 | /* |
| 329 | * Flush out any old buffers remaining from a previous use. |
| 330 | */ |
| 331 | vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); |
| 332 | error = vinvalbuf(devvp, V_SAVE, l->l_cred, l, 0, 0); |
| 333 | VOP_UNLOCK(devvp); |
| 334 | if (error) |
| 335 | return (error); |
| 336 | |
| 337 | bp = NULL; |
| 338 | |
| 339 | error = bread(devvp, BBLOCK, BBSIZE, 0, &bp); |
| 340 | if (error) |
| 341 | goto out; |
| 342 | ntmp = malloc(sizeof(*ntmp), M_NTFSMNT, M_WAITOK|M_ZERO); |
| 343 | memcpy(&ntmp->ntm_bootfile, bp->b_data, sizeof(struct bootfile)); |
| 344 | brelse(bp, 0); |
| 345 | bp = NULL; |
| 346 | |
| 347 | if ((error = ntfs_superblock_validate(ntmp))) |
| 348 | goto out; |
| 349 | |
| 350 | { |
| 351 | int8_t cpr = ntmp->ntm_mftrecsz; |
| 352 | if (cpr > 0) |
| 353 | ntmp->ntm_bpmftrec = ntmp->ntm_spc * cpr; |
| 354 | else |
| 355 | ntmp->ntm_bpmftrec = (1 << (-cpr)) / ntmp->ntm_bps; |
| 356 | } |
| 357 | dprintf(("ntfs_mountfs(): bps: %d, spc: %d, media: %x, mftrecsz: %d (%d sects)\n" , |
| 358 | ntmp->ntm_bps, ntmp->ntm_spc, ntmp->ntm_bootfile.bf_media, |
| 359 | ntmp->ntm_mftrecsz, ntmp->ntm_bpmftrec)); |
| 360 | dprintf(("ntfs_mountfs(): mftcn: 0x%x|0x%x\n" , |
| 361 | (u_int32_t)ntmp->ntm_mftcn, (u_int32_t)ntmp->ntm_mftmirrcn)); |
| 362 | |
| 363 | ntmp->ntm_mountp = mp; |
| 364 | ntmp->ntm_dev = dev; |
| 365 | ntmp->ntm_devvp = devvp; |
| 366 | ntmp->ntm_uid = argsp->uid; |
| 367 | ntmp->ntm_gid = argsp->gid; |
| 368 | ntmp->ntm_mode = argsp->mode; |
| 369 | ntmp->ntm_flag = argsp->flag; |
| 370 | mp->mnt_data = ntmp; |
| 371 | |
| 372 | /* set file name encode/decode hooks XXX utf-8 only for now */ |
| 373 | ntmp->ntm_wget = ntfs_utf8_wget; |
| 374 | ntmp->ntm_wput = ntfs_utf8_wput; |
| 375 | ntmp->ntm_wcmp = ntfs_utf8_wcmp; |
| 376 | |
| 377 | dprintf(("ntfs_mountfs(): case-%s,%s uid: %d, gid: %d, mode: %o\n" , |
| 378 | (ntmp->ntm_flag & NTFS_MFLAG_CASEINS)?"insens." :"sens." , |
| 379 | (ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES)?" allnames," :"" , |
| 380 | ntmp->ntm_uid, ntmp->ntm_gid, ntmp->ntm_mode)); |
| 381 | |
| 382 | /* |
| 383 | * We read in some system nodes to do not allow |
| 384 | * reclaim them and to have everytime access to them. |
| 385 | */ |
| 386 | { |
| 387 | int pi[3] = { NTFS_MFTINO, NTFS_ROOTINO, NTFS_BITMAPINO }; |
| 388 | for (i = 0; i < 3; i++) { |
| 389 | error = VFS_VGET(mp, pi[i], &(ntmp->ntm_sysvn[pi[i]])); |
| 390 | if (error) |
| 391 | goto out1; |
| 392 | ntmp->ntm_sysvn[pi[i]]->v_vflag |= VV_SYSTEM; |
| 393 | vref(ntmp->ntm_sysvn[pi[i]]); |
| 394 | vput(ntmp->ntm_sysvn[pi[i]]); |
| 395 | } |
| 396 | } |
| 397 | |
| 398 | /* read the Unicode lowercase --> uppercase translation table, |
| 399 | * if necessary */ |
| 400 | if ((error = ntfs_toupper_use(mp, ntmp))) |
| 401 | goto out1; |
| 402 | |
| 403 | /* |
| 404 | * Scan $BitMap and count free clusters |
| 405 | */ |
| 406 | error = ntfs_calccfree(ntmp, &ntmp->ntm_cfree); |
| 407 | if (error) |
| 408 | goto out1; |
| 409 | |
| 410 | /* |
| 411 | * Read and translate to internal format attribute |
| 412 | * definition file. |
| 413 | */ |
| 414 | { |
| 415 | int num,j; |
| 416 | struct attrdef ad; |
| 417 | |
| 418 | /* Open $AttrDef */ |
| 419 | error = VFS_VGET(mp, NTFS_ATTRDEFINO, &vp); |
| 420 | if (error) |
| 421 | goto out1; |
| 422 | |
| 423 | /* Count valid entries */ |
| 424 | for (num = 0; ; num++) { |
| 425 | error = ntfs_readattr(ntmp, VTONT(vp), |
| 426 | NTFS_A_DATA, NULL, |
| 427 | num * sizeof(ad), sizeof(ad), |
| 428 | &ad, NULL); |
| 429 | if (error) |
| 430 | goto out1; |
| 431 | if (ad.ad_name[0] == 0) |
| 432 | break; |
| 433 | } |
| 434 | |
| 435 | /* Alloc memory for attribute definitions */ |
| 436 | ntmp->ntm_ad = (struct ntvattrdef *) malloc( |
| 437 | num * sizeof(struct ntvattrdef), |
| 438 | M_NTFSMNT, M_WAITOK); |
| 439 | |
| 440 | ntmp->ntm_adnum = num; |
| 441 | |
| 442 | /* Read them and translate */ |
| 443 | for (i = 0; i < num; i++) { |
| 444 | error = ntfs_readattr(ntmp, VTONT(vp), |
| 445 | NTFS_A_DATA, NULL, |
| 446 | i * sizeof(ad), sizeof(ad), |
| 447 | &ad, NULL); |
| 448 | if (error) |
| 449 | goto out1; |
| 450 | j = 0; |
| 451 | do { |
| 452 | ntmp->ntm_ad[i].ad_name[j] = ad.ad_name[j]; |
| 453 | } while(ad.ad_name[j++]); |
| 454 | ntmp->ntm_ad[i].ad_namelen = j - 1; |
| 455 | ntmp->ntm_ad[i].ad_type = ad.ad_type; |
| 456 | } |
| 457 | |
| 458 | vput(vp); |
| 459 | } |
| 460 | |
| 461 | mp->mnt_stat.f_fsidx.__fsid_val[0] = dev; |
| 462 | mp->mnt_stat.f_fsidx.__fsid_val[1] = makefstype(MOUNT_NTFS); |
| 463 | mp->mnt_stat.f_fsid = mp->mnt_stat.f_fsidx.__fsid_val[0]; |
| 464 | mp->mnt_stat.f_namemax = NTFS_MAXFILENAME; |
| 465 | mp->mnt_flag |= MNT_LOCAL; |
| 466 | spec_node_setmountedfs(devvp, mp); |
| 467 | return (0); |
| 468 | |
| 469 | out1: |
| 470 | for (i = 0; i < NTFS_SYSNODESNUM; i++) |
| 471 | if (ntmp->ntm_sysvn[i]) |
| 472 | vrele(ntmp->ntm_sysvn[i]); |
| 473 | |
| 474 | if (vflush(mp, NULLVP, 0)) { |
| 475 | dprintf(("ntfs_mountfs: vflush failed\n" )); |
| 476 | } |
| 477 | out: |
| 478 | spec_node_setmountedfs(devvp, NULL); |
| 479 | if (bp) |
| 480 | brelse(bp, 0); |
| 481 | |
| 482 | if (error) { |
| 483 | if (ntmp) { |
| 484 | if (ntmp->ntm_ad) |
| 485 | free(ntmp->ntm_ad, M_NTFSMNT); |
| 486 | free(ntmp, M_NTFSMNT); |
| 487 | } |
| 488 | } |
| 489 | |
| 490 | return (error); |
| 491 | } |
| 492 | |
| 493 | static int |
| 494 | ntfs_start(struct mount *mp, int flags) |
| 495 | { |
| 496 | return (0); |
| 497 | } |
| 498 | |
| 499 | static int |
| 500 | ntfs_unmount(struct mount *mp, int mntflags) |
| 501 | { |
| 502 | struct lwp *l = curlwp; |
| 503 | struct ntfsmount *ntmp; |
| 504 | int error, ronly = 0, flags, i; |
| 505 | |
| 506 | dprintf(("ntfs_unmount: unmounting...\n" )); |
| 507 | ntmp = VFSTONTFS(mp); |
| 508 | |
| 509 | flags = 0; |
| 510 | if (mntflags & MNT_FORCE) |
| 511 | flags |= FORCECLOSE; |
| 512 | |
| 513 | dprintf(("ntfs_unmount: vflushing...\n" )); |
| 514 | error = vflush(mp, NULLVP, flags | SKIPSYSTEM); |
| 515 | if (error) { |
| 516 | dprintf(("ntfs_unmount: vflush failed: %d\n" ,error)); |
| 517 | return (error); |
| 518 | } |
| 519 | |
| 520 | /* Check if only system vnodes are rest */ |
| 521 | for (i = 0; i < NTFS_SYSNODESNUM; i++) |
| 522 | if ((ntmp->ntm_sysvn[i]) && |
| 523 | (ntmp->ntm_sysvn[i]->v_usecount > 1)) |
| 524 | return (EBUSY); |
| 525 | |
| 526 | /* Dereference all system vnodes */ |
| 527 | for (i = 0; i < NTFS_SYSNODESNUM; i++) |
| 528 | if (ntmp->ntm_sysvn[i]) |
| 529 | vrele(ntmp->ntm_sysvn[i]); |
| 530 | |
| 531 | /* vflush system vnodes */ |
| 532 | error = vflush(mp, NULLVP, flags); |
| 533 | if (error) { |
| 534 | panic("ntfs_unmount: vflush failed(sysnodes): %d\n" ,error); |
| 535 | } |
| 536 | |
| 537 | /* Check if the type of device node isn't VBAD before |
| 538 | * touching v_specinfo. If the device vnode is revoked, the |
| 539 | * field is NULL and touching it causes null pointer derefercence. |
| 540 | */ |
| 541 | if (ntmp->ntm_devvp->v_type != VBAD) |
| 542 | spec_node_setmountedfs(ntmp->ntm_devvp, NULL); |
| 543 | |
| 544 | error = vinvalbuf(ntmp->ntm_devvp, V_SAVE, NOCRED, l, 0, 0); |
| 545 | KASSERT(error == 0); |
| 546 | |
| 547 | /* lock the device vnode before calling VOP_CLOSE() */ |
| 548 | vn_lock(ntmp->ntm_devvp, LK_EXCLUSIVE | LK_RETRY); |
| 549 | error = VOP_CLOSE(ntmp->ntm_devvp, ronly ? FREAD : FREAD|FWRITE, |
| 550 | NOCRED); |
| 551 | KASSERT(error == 0); |
| 552 | VOP_UNLOCK(ntmp->ntm_devvp); |
| 553 | |
| 554 | vrele(ntmp->ntm_devvp); |
| 555 | |
| 556 | /* free the toupper table, if this has been last mounted ntfs volume */ |
| 557 | ntfs_toupper_unuse(); |
| 558 | |
| 559 | dprintf(("ntfs_umount: freeing memory...\n" )); |
| 560 | mp->mnt_data = NULL; |
| 561 | mp->mnt_flag &= ~MNT_LOCAL; |
| 562 | free(ntmp->ntm_ad, M_NTFSMNT); |
| 563 | free(ntmp, M_NTFSMNT); |
| 564 | return (0); |
| 565 | } |
| 566 | |
| 567 | static int |
| 568 | ntfs_root(struct mount *mp, struct vnode **vpp) |
| 569 | { |
| 570 | struct vnode *nvp; |
| 571 | int error = 0; |
| 572 | |
| 573 | dprintf(("ntfs_root(): sysvn: %p\n" , |
| 574 | VFSTONTFS(mp)->ntm_sysvn[NTFS_ROOTINO])); |
| 575 | error = VFS_VGET(mp, (ino_t)NTFS_ROOTINO, &nvp); |
| 576 | if (error) { |
| 577 | printf("ntfs_root: VFS_VGET failed: %d\n" , error); |
| 578 | return (error); |
| 579 | } |
| 580 | |
| 581 | *vpp = nvp; |
| 582 | return (0); |
| 583 | } |
| 584 | |
| 585 | int |
| 586 | ntfs_calccfree(struct ntfsmount *ntmp, cn_t *cfreep) |
| 587 | { |
| 588 | struct vnode *vp; |
| 589 | u_int8_t *tmp; |
| 590 | int j, error; |
| 591 | cn_t cfree = 0; |
| 592 | size_t bmsize, i; |
| 593 | |
| 594 | vp = ntmp->ntm_sysvn[NTFS_BITMAPINO]; |
| 595 | bmsize = VTOF(vp)->f_size; |
| 596 | tmp = (u_int8_t *) malloc(bmsize, M_TEMP, M_WAITOK); |
| 597 | |
| 598 | error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL, |
| 599 | 0, bmsize, tmp, NULL); |
| 600 | if (error) |
| 601 | goto out; |
| 602 | |
| 603 | for (i = 0; i < bmsize; i++) |
| 604 | for (j = 0; j < 8; j++) |
| 605 | if (~tmp[i] & (1 << j)) |
| 606 | cfree++; |
| 607 | *cfreep = cfree; |
| 608 | |
| 609 | out: |
| 610 | free(tmp, M_TEMP); |
| 611 | return(error); |
| 612 | } |
| 613 | |
| 614 | static int |
| 615 | ntfs_statvfs(struct mount *mp, struct statvfs *sbp) |
| 616 | { |
| 617 | struct ntfsmount *ntmp = VFSTONTFS(mp); |
| 618 | u_int64_t mftallocated; |
| 619 | |
| 620 | dprintf(("ntfs_statvfs():\n" )); |
| 621 | |
| 622 | mftallocated = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_allocated; |
| 623 | |
| 624 | sbp->f_bsize = ntmp->ntm_bps; |
| 625 | sbp->f_frsize = sbp->f_bsize; /* XXX */ |
| 626 | sbp->f_iosize = ntmp->ntm_bps * ntmp->ntm_spc; |
| 627 | sbp->f_blocks = ntmp->ntm_bootfile.bf_spv; |
| 628 | sbp->f_bfree = sbp->f_bavail = ntfs_cntobn(ntmp->ntm_cfree); |
| 629 | sbp->f_ffree = sbp->f_favail = sbp->f_bfree / ntmp->ntm_bpmftrec; |
| 630 | sbp->f_files = mftallocated / ntfs_bntob(ntmp->ntm_bpmftrec) + |
| 631 | sbp->f_ffree; |
| 632 | sbp->f_fresvd = sbp->f_bresvd = 0; /* XXX */ |
| 633 | sbp->f_flag = mp->mnt_flag; |
| 634 | copy_statvfs_info(sbp, mp); |
| 635 | return (0); |
| 636 | } |
| 637 | |
| 638 | static int |
| 639 | ntfs_sync(struct mount *mp, int waitfor, kauth_cred_t cred) |
| 640 | { |
| 641 | /*dprintf(("ntfs_sync():\n"));*/ |
| 642 | return (0); |
| 643 | } |
| 644 | |
| 645 | /*ARGSUSED*/ |
| 646 | static int |
| 647 | ntfs_fhtovp(struct mount *mp, struct fid *fhp, struct vnode **vpp) |
| 648 | { |
| 649 | struct ntfid ntfh; |
| 650 | int error; |
| 651 | |
| 652 | if (fhp->fid_len != sizeof(struct ntfid)) |
| 653 | return EINVAL; |
| 654 | memcpy(&ntfh, fhp, sizeof(ntfh)); |
| 655 | ddprintf(("ntfs_fhtovp(): %s: %llu\n" , mp->mnt_stat.f_mntonname, |
| 656 | (unsigned long long)ntfh.ntfid_ino)); |
| 657 | |
| 658 | error = ntfs_vgetex(mp, ntfh.ntfid_ino, ntfh.ntfid_attr, "" , |
| 659 | LK_EXCLUSIVE, vpp); |
| 660 | if (error != 0) { |
| 661 | *vpp = NULLVP; |
| 662 | return (error); |
| 663 | } |
| 664 | |
| 665 | /* XXX as unlink/rmdir/mkdir/creat are not currently possible |
| 666 | * with NTFS, we don't need to check anything else for now */ |
| 667 | return (0); |
| 668 | } |
| 669 | |
| 670 | static int |
| 671 | ntfs_vptofh(struct vnode *vp, struct fid *fhp, size_t *fh_size) |
| 672 | { |
| 673 | struct ntnode *ntp; |
| 674 | struct ntfid ntfh; |
| 675 | struct fnode *fn; |
| 676 | |
| 677 | if (*fh_size < sizeof(struct ntfid)) { |
| 678 | *fh_size = sizeof(struct ntfid); |
| 679 | return E2BIG; |
| 680 | } |
| 681 | *fh_size = sizeof(struct ntfid); |
| 682 | |
| 683 | ddprintf(("ntfs_fhtovp(): %s: %p\n" , vp->v_mount->mnt_stat.f_mntonname, |
| 684 | vp)); |
| 685 | |
| 686 | fn = VTOF(vp); |
| 687 | ntp = VTONT(vp); |
| 688 | memset(&ntfh, 0, sizeof(ntfh)); |
| 689 | ntfh.ntfid_len = sizeof(struct ntfid); |
| 690 | ntfh.ntfid_ino = ntp->i_number; |
| 691 | ntfh.ntfid_attr = fn->f_attrtype; |
| 692 | #ifdef notyet |
| 693 | ntfh.ntfid_gen = ntp->i_gen; |
| 694 | #endif |
| 695 | memcpy(fhp, &ntfh, sizeof(ntfh)); |
| 696 | return (0); |
| 697 | } |
| 698 | |
| 699 | static int |
| 700 | ntfs_loadvnode(struct mount *mp, struct vnode *vp, |
| 701 | const void *key, size_t key_len, const void **new_key) |
| 702 | { |
| 703 | int error; |
| 704 | struct ntvattr *vap; |
| 705 | struct ntkey small_key, *ntkey; |
| 706 | struct ntfsmount *ntmp; |
| 707 | struct ntnode *ip; |
| 708 | struct fnode *fp = NULL; |
| 709 | enum vtype f_type = VBAD; |
| 710 | |
| 711 | if (key_len <= sizeof(small_key)) |
| 712 | ntkey = &small_key; |
| 713 | else |
| 714 | ntkey = kmem_alloc(key_len, KM_SLEEP); |
| 715 | memcpy(ntkey, key, key_len); |
| 716 | |
| 717 | dprintf(("ntfs_loadvnode: ino: %llu, attr: 0x%x:%s" , |
| 718 | (unsigned long long)ntkey->k_ino, |
| 719 | ntkey->k_attrtype, ntkey->k_attrname)); |
| 720 | |
| 721 | ntmp = VFSTONTFS(mp); |
| 722 | |
| 723 | /* Get ntnode */ |
| 724 | error = ntfs_ntlookup(ntmp, ntkey->k_ino, &ip); |
| 725 | if (error) { |
| 726 | printf("ntfs_loadvnode: ntfs_ntget failed\n" ); |
| 727 | goto out; |
| 728 | } |
| 729 | /* It may be not initialized fully, so force load it */ |
| 730 | if (!(ip->i_flag & IN_LOADED)) { |
| 731 | error = ntfs_loadntnode(ntmp, ip); |
| 732 | if (error) { |
| 733 | printf("ntfs_loadvnode: CAN'T LOAD ATTRIBUTES FOR INO:" |
| 734 | " %llu\n" , (unsigned long long)ip->i_number); |
| 735 | ntfs_ntput(ip); |
| 736 | goto out; |
| 737 | } |
| 738 | } |
| 739 | |
| 740 | /* Setup fnode */ |
| 741 | fp = kmem_zalloc(sizeof(*fp), KM_SLEEP); |
| 742 | dprintf(("%s: allocating fnode: %p\n" , __func__, fp)); |
| 743 | |
| 744 | error = ntfs_ntvattrget(ntmp, ip, NTFS_A_NAME, NULL, 0, &vap); |
| 745 | if (error) { |
| 746 | printf("%s: attr %x for ino %" PRId64 ": error %d\n" , |
| 747 | __func__, NTFS_A_NAME, ip->i_number, error); |
| 748 | ntfs_ntput(ip); |
| 749 | goto out; |
| 750 | } |
| 751 | fp->f_fflag = vap->va_a_name->n_flag; |
| 752 | fp->f_pnumber = vap->va_a_name->n_pnumber; |
| 753 | fp->f_times = vap->va_a_name->n_times; |
| 754 | ntfs_ntvattrrele(vap); |
| 755 | |
| 756 | if ((ip->i_frflag & NTFS_FRFLAG_DIR) && |
| 757 | (ntkey->k_attrtype == NTFS_A_DATA && |
| 758 | strcmp(ntkey->k_attrname, "" ) == 0)) { |
| 759 | f_type = VDIR; |
| 760 | } else { |
| 761 | f_type = VREG; |
| 762 | error = ntfs_ntvattrget(ntmp, ip, |
| 763 | ntkey->k_attrtype, ntkey->k_attrname, 0, &vap); |
| 764 | if (error == 0) { |
| 765 | fp->f_size = vap->va_datalen; |
| 766 | fp->f_allocated = vap->va_allocated; |
| 767 | ntfs_ntvattrrele(vap); |
| 768 | } else if (ntkey->k_attrtype == NTFS_A_DATA && |
| 769 | strcmp(ntkey->k_attrname, "" ) == 0 && |
| 770 | error == ENOENT) { |
| 771 | fp->f_size = 0; |
| 772 | fp->f_allocated = 0; |
| 773 | error = 0; |
| 774 | } else { |
| 775 | printf("%s: attr %x for ino %" PRId64 ": error %d\n" , |
| 776 | __func__, ntkey->k_attrtype, ip->i_number, error); |
| 777 | ntfs_ntput(ip); |
| 778 | goto out; |
| 779 | } |
| 780 | } |
| 781 | |
| 782 | if (key_len <= sizeof(fp->f_smallkey)) |
| 783 | fp->f_key = &fp->f_smallkey; |
| 784 | else |
| 785 | fp->f_key = kmem_alloc(key_len, KM_SLEEP); |
| 786 | fp->f_ip = ip; |
| 787 | fp->f_ino = ip->i_number; |
| 788 | strcpy(fp->f_attrname, ntkey->k_attrname); |
| 789 | fp->f_attrtype = ntkey->k_attrtype; |
| 790 | fp->f_vp = vp; |
| 791 | vp->v_data = fp; |
| 792 | |
| 793 | vp->v_tag = VT_NTFS; |
| 794 | vp->v_type = f_type; |
| 795 | vp->v_op = ntfs_vnodeop_p; |
| 796 | ntfs_ntref(ip); |
| 797 | vref(ip->i_devvp); |
| 798 | genfs_node_init(vp, &ntfs_genfsops); |
| 799 | |
| 800 | if (ip->i_number == NTFS_ROOTINO) |
| 801 | vp->v_vflag |= VV_ROOT; |
| 802 | |
| 803 | uvm_vnp_setsize(vp, fp->f_size); |
| 804 | ntfs_ntput(ip); |
| 805 | |
| 806 | *new_key = fp->f_key; |
| 807 | |
| 808 | fp = NULL; |
| 809 | |
| 810 | out: |
| 811 | if (ntkey != &small_key) |
| 812 | kmem_free(ntkey, key_len); |
| 813 | if (fp) |
| 814 | kmem_free(fp, sizeof(*fp)); |
| 815 | |
| 816 | return error; |
| 817 | } |
| 818 | |
| 819 | static int |
| 820 | ntfs_vget(struct mount *mp, ino_t ino, struct vnode **vpp) |
| 821 | { |
| 822 | return ntfs_vgetex(mp, ino, NTFS_A_DATA, "" , LK_EXCLUSIVE, vpp); |
| 823 | } |
| 824 | |
| 825 | int |
| 826 | ntfs_vgetex(struct mount *mp, ino_t ino, u_int32_t attrtype, |
| 827 | const char *attrname, u_long lkflags, struct vnode **vpp) |
| 828 | { |
| 829 | const int attrlen = strlen(attrname); |
| 830 | int error; |
| 831 | struct ntkey small_key, *ntkey; |
| 832 | |
| 833 | if (NTKEY_SIZE(attrlen) <= sizeof(small_key)) |
| 834 | ntkey = &small_key; |
| 835 | else |
| 836 | ntkey = malloc(NTKEY_SIZE(attrlen), M_TEMP, M_WAITOK); |
| 837 | ntkey->k_ino = ino; |
| 838 | ntkey->k_attrtype = attrtype; |
| 839 | strcpy(ntkey->k_attrname, attrname); |
| 840 | |
| 841 | error = vcache_get(mp, ntkey, NTKEY_SIZE(attrlen), vpp); |
| 842 | if (error) |
| 843 | goto out; |
| 844 | |
| 845 | if ((lkflags & (LK_SHARED | LK_EXCLUSIVE)) != 0) { |
| 846 | error = vn_lock(*vpp, lkflags); |
| 847 | if (error) { |
| 848 | vrele(*vpp); |
| 849 | *vpp = NULL; |
| 850 | } |
| 851 | } |
| 852 | |
| 853 | out: |
| 854 | if (ntkey != &small_key) |
| 855 | free(ntkey, M_TEMP); |
| 856 | return error; |
| 857 | } |
| 858 | |
| 859 | extern const struct vnodeopv_desc ntfs_vnodeop_opv_desc; |
| 860 | |
| 861 | const struct vnodeopv_desc * const ntfs_vnodeopv_descs[] = { |
| 862 | &ntfs_vnodeop_opv_desc, |
| 863 | NULL, |
| 864 | }; |
| 865 | |
| 866 | struct vfsops ntfs_vfsops = { |
| 867 | .vfs_name = MOUNT_NTFS, |
| 868 | .vfs_min_mount_data = sizeof (struct ntfs_args), |
| 869 | .vfs_mount = ntfs_mount, |
| 870 | .vfs_start = ntfs_start, |
| 871 | .vfs_unmount = ntfs_unmount, |
| 872 | .vfs_root = ntfs_root, |
| 873 | .vfs_quotactl = (void *)eopnotsupp, |
| 874 | .vfs_statvfs = ntfs_statvfs, |
| 875 | .vfs_sync = ntfs_sync, |
| 876 | .vfs_vget = ntfs_vget, |
| 877 | .vfs_loadvnode = ntfs_loadvnode, |
| 878 | .vfs_fhtovp = ntfs_fhtovp, |
| 879 | .vfs_vptofh = ntfs_vptofh, |
| 880 | .vfs_init = ntfs_init, |
| 881 | .vfs_reinit = ntfs_reinit, |
| 882 | .vfs_done = ntfs_done, |
| 883 | .vfs_mountroot = ntfs_mountroot, |
| 884 | .vfs_snapshot = (void *)eopnotsupp, |
| 885 | .vfs_extattrctl = vfs_stdextattrctl, |
| 886 | .vfs_suspendctl = (void *)eopnotsupp, |
| 887 | .vfs_renamelock_enter = genfs_renamelock_enter, |
| 888 | .vfs_renamelock_exit = genfs_renamelock_exit, |
| 889 | .vfs_fsync = (void *)eopnotsupp, |
| 890 | .vfs_opv_descs = ntfs_vnodeopv_descs |
| 891 | }; |
| 892 | |
| 893 | static int |
| 894 | ntfs_modcmd(modcmd_t cmd, void *arg) |
| 895 | { |
| 896 | int error; |
| 897 | |
| 898 | switch (cmd) { |
| 899 | case MODULE_CMD_INIT: |
| 900 | error = vfs_attach(&ntfs_vfsops); |
| 901 | if (error != 0) |
| 902 | break; |
| 903 | sysctl_createv(&ntfs_sysctl_log, 0, NULL, NULL, |
| 904 | CTLFLAG_PERMANENT, |
| 905 | CTLTYPE_NODE, "ntfs" , |
| 906 | SYSCTL_DESCR("NTFS file system" ), |
| 907 | NULL, 0, NULL, 0, |
| 908 | CTL_VFS, 20, CTL_EOL); |
| 909 | /* |
| 910 | * XXX the "20" above could be dynamic, thereby eliminating |
| 911 | * one more instance of the "number to vfs" mapping problem, |
| 912 | * but "20" is the order as taken from sys/mount.h |
| 913 | */ |
| 914 | break; |
| 915 | case MODULE_CMD_FINI: |
| 916 | error = vfs_detach(&ntfs_vfsops); |
| 917 | if (error != 0) |
| 918 | break; |
| 919 | sysctl_teardown(&ntfs_sysctl_log); |
| 920 | break; |
| 921 | default: |
| 922 | error = ENOTTY; |
| 923 | break; |
| 924 | } |
| 925 | |
| 926 | return (error); |
| 927 | } |
| 928 | |