| 1 | /*- |
| 2 | * Copyright (c) 1998, 1999 Semen Ustimenko (semenu@FreeBSD.org) |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
| 8 | * 1. Redistributions of source code must retain the above copyright |
| 9 | * notice, this list of conditions and the following disclaimer. |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer in the |
| 12 | * documentation and/or other materials provided with the distribution. |
| 13 | * |
| 14 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| 15 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 16 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 17 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| 18 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 19 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 20 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 21 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 22 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 23 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 24 | * SUCH DAMAGE. |
| 25 | * |
| 26 | * $FreeBSD: src/sys/fs/hpfs/hpfs_vfsops.c,v 1.3.2.2 2001/12/25 01:44:45 dillon Exp $ |
| 27 | * $DragonFly: src/sys/vfs/hpfs/hpfs_vfsops.c,v 1.43 2008/09/17 21:44:22 dillon Exp $ |
| 28 | */ |
| 29 | |
| 30 | |
| 31 | #include <sys/param.h> |
| 32 | #include <sys/systm.h> |
| 33 | #include <sys/nlookup.h> |
| 34 | #include <sys/conf.h> |
| 35 | #include <sys/proc.h> |
| 36 | #include <sys/kernel.h> |
| 37 | #include <sys/vnode.h> |
| 38 | #include <sys/mount.h> |
| 39 | #include <sys/buf.h> |
| 40 | #include <sys/fcntl.h> |
| 41 | #include <sys/malloc.h> |
| 42 | |
| 43 | #include <machine/inttypes.h> |
| 44 | |
| 45 | #include <vm/vm.h> |
| 46 | #include <vm/vm_param.h> |
| 47 | #if defined(__NetBSD__) |
| 48 | #include <vm/vm_prot.h> |
| 49 | #endif |
| 50 | #include <vm/vm_page.h> |
| 51 | #include <vm/vm_object.h> |
| 52 | #include <vm/vm_extern.h> |
| 53 | #include <sys/buf2.h> |
| 54 | |
| 55 | #if defined(__NetBSD__) |
| 56 | #include <miscfs/specfs/specdev.h> |
| 57 | #endif |
| 58 | |
| 59 | #include "hpfs.h" |
| 60 | #include "hpfsmount.h" |
| 61 | #include "hpfs_subr.h" |
| 62 | |
| 63 | extern struct vop_ops hpfs_vnode_vops; |
| 64 | |
| 65 | MALLOC_DEFINE(M_HPFSMNT, "HPFS mount", "HPFS mount structure"); |
| 66 | MALLOC_DEFINE(M_HPFSNO, "HPFS node", "HPFS node structure"); |
| 67 | |
| 68 | static int hpfs_root (struct mount *, struct vnode **); |
| 69 | static int hpfs_statfs (struct mount *, struct statfs *, struct ucred *); |
| 70 | static int hpfs_unmount (struct mount *, int); |
| 71 | static int hpfs_vget (struct mount *mp, struct vnode *, |
| 72 | ino_t ino, struct vnode **vpp); |
| 73 | static int hpfs_mountfs (struct vnode *, struct mount *, |
| 74 | struct hpfs_args *); |
| 75 | static int hpfs_vptofh (struct vnode *, struct fid *); |
| 76 | static int hpfs_fhtovp (struct mount *, struct vnode *, |
| 77 | struct fid *, struct vnode **); |
| 78 | |
| 79 | |
| 80 | struct sockaddr; |
| 81 | static int hpfs_mount (struct mount *, char *, caddr_t, struct ucred *); |
| 82 | static int hpfs_init (struct vfsconf *); |
| 83 | static int hpfs_checkexp (struct mount *, struct sockaddr *, |
| 84 | int *, struct ucred **); |
| 85 | |
| 86 | /*ARGSUSED*/ |
| 87 | static int |
| 88 | hpfs_checkexp(struct mount *mp, |
| 89 | struct sockaddr *nam, |
| 90 | int *exflagsp, struct ucred **credanonp) |
| 91 | { |
| 92 | struct netcred *np; |
| 93 | struct hpfsmount *hpm = VFSTOHPFS(mp); |
| 94 | |
| 95 | /* |
| 96 | * Get the export permission structure for this <mp, client> tuple. |
| 97 | */ |
| 98 | np = vfs_export_lookup(mp, &hpm->hpm_export, nam); |
| 99 | if (np == NULL) |
| 100 | return (EACCES); |
| 101 | |
| 102 | *exflagsp = np->netc_exflags; |
| 103 | *credanonp = &np->netc_anon; |
| 104 | return (0); |
| 105 | } |
| 106 | |
| 107 | static int |
| 108 | hpfs_init(struct vfsconf *vcp) |
| 109 | { |
| 110 | dprintf(("hpfs_init():\n")); |
| 111 | |
| 112 | hpfs_hphashinit(); |
| 113 | return 0; |
| 114 | } |
| 115 | |
| 116 | static int |
| 117 | hpfs_mount(struct mount *mp, char *path, caddr_t data, struct ucred *cred) |
| 118 | { |
| 119 | size_t size; |
| 120 | int error; |
| 121 | struct vnode *devvp; |
| 122 | struct hpfs_args args; |
| 123 | struct hpfsmount *hpmp = 0; |
| 124 | struct nlookupdata nd; |
| 125 | |
| 126 | dprintf(("hpfs_mount():\n")); |
| 127 | /* |
| 128 | *** |
| 129 | * Mounting non-root file system or updating a file system |
| 130 | *** |
| 131 | */ |
| 132 | |
| 133 | /* copy in user arguments*/ |
| 134 | error = copyin(data, (caddr_t)&args, sizeof (struct hpfs_args)); |
| 135 | if (error) |
| 136 | goto error_1; /* can't get arguments*/ |
| 137 | |
| 138 | /* |
| 139 | * If updating, check whether changing from read-only to |
| 140 | * read/write; if there is no device name, that's all we do. |
| 141 | */ |
| 142 | if (mp->mnt_flag & MNT_UPDATE) { |
| 143 | dprintf(("hpfs_mount: MNT_UPDATE: ")); |
| 144 | |
| 145 | hpmp = VFSTOHPFS(mp); |
| 146 | |
| 147 | if (args.fspec == 0) { |
| 148 | dprintf(("export 0x%x\n",args.export.ex_flags)); |
| 149 | error = vfs_export(mp, &hpmp->hpm_export, &args.export); |
| 150 | if (error) { |
| 151 | kprintf("hpfs_mount: vfs_export failed %d\n", |
| 152 | error); |
| 153 | } |
| 154 | goto success; |
| 155 | } else { |
| 156 | dprintf(("name [FAILED]\n")); |
| 157 | error = EINVAL; |
| 158 | goto success; |
| 159 | } |
| 160 | dprintf(("\n")); |
| 161 | } |
| 162 | |
| 163 | /* |
| 164 | * Not an update, or updating the name: look up the name |
| 165 | * and verify that it refers to a sensible block device. |
| 166 | */ |
| 167 | devvp = NULL; |
| 168 | error = nlookup_init(&nd, args.fspec, UIO_USERSPACE, NLC_FOLLOW); |
| 169 | if (error == 0) |
| 170 | error = nlookup(&nd); |
| 171 | if (error == 0) |
| 172 | error = cache_vref(&nd.nl_nch, nd.nl_cred, &devvp); |
| 173 | nlookup_done(&nd); |
| 174 | if (error) |
| 175 | goto error_1; |
| 176 | |
| 177 | if (!vn_isdisk(devvp, &error)) |
| 178 | goto error_2; |
| 179 | |
| 180 | /* |
| 181 | ******************** |
| 182 | * NEW MOUNT |
| 183 | ******************** |
| 184 | */ |
| 185 | |
| 186 | /* Save "mounted from" info for mount point (NULL pad)*/ |
| 187 | copyinstr( args.fspec, /* device name*/ |
| 188 | mp->mnt_stat.f_mntfromname, /* save area*/ |
| 189 | MNAMELEN - 1, /* max size*/ |
| 190 | &size); /* real size*/ |
| 191 | bzero( mp->mnt_stat.f_mntfromname + size, MNAMELEN - size); |
| 192 | |
| 193 | error = hpfs_mountfs(devvp, mp, &args); |
| 194 | if (error) |
| 195 | goto error_2; |
| 196 | |
| 197 | /* |
| 198 | * Initialize FS stat information in mount struct; uses |
| 199 | * mp->mnt_stat.f_mntfromname. |
| 200 | * |
| 201 | * This code is common to root and non-root mounts |
| 202 | */ |
| 203 | VFS_STATFS(mp, &mp->mnt_stat, cred); |
| 204 | return (error); |
| 205 | |
| 206 | error_2: /* error with devvp held*/ |
| 207 | |
| 208 | /* release devvp before failing*/ |
| 209 | vrele(devvp); |
| 210 | |
| 211 | error_1: /* no state to back out*/ |
| 212 | |
| 213 | success: |
| 214 | return (error); |
| 215 | } |
| 216 | |
| 217 | /* |
| 218 | * Common code for mount and mountroot |
| 219 | */ |
| 220 | int |
| 221 | hpfs_mountfs(struct vnode *devvp, struct mount *mp, struct hpfs_args *argsp) |
| 222 | { |
| 223 | int error, ncount, ronly; |
| 224 | struct sublock *sup; |
| 225 | struct spblock *spp; |
| 226 | struct hpfsmount *hpmp; |
| 227 | struct buf *bp = NULL; |
| 228 | struct vnode *vp; |
| 229 | cdev_t dev; |
| 230 | |
| 231 | dprintf(("hpfs_mountfs():\n")); |
| 232 | /* |
| 233 | * Disallow multiple mounts of the same device. |
| 234 | * Disallow mounting of a device that is currently in use |
| 235 | * (except for root, which might share swap device for miniroot). |
| 236 | * Flush out any old buffers remaining from a previous use. |
| 237 | */ |
| 238 | error = vfs_mountedon(devvp); |
| 239 | if (error) |
| 240 | return (error); |
| 241 | ncount = vcount(devvp); |
| 242 | if (devvp->v_object) |
| 243 | ncount -= 1; |
| 244 | if (ncount > 0) |
| 245 | return (EBUSY); |
| 246 | |
| 247 | VN_LOCK(devvp, LK_EXCLUSIVE | LK_RETRY); |
| 248 | error = vinvalbuf(devvp, V_SAVE, 0, 0); |
| 249 | VOP__UNLOCK(devvp, 0); |
| 250 | if (error) |
| 251 | return (error); |
| 252 | |
| 253 | ronly = (mp->mnt_flag & MNT_RDONLY) != 0; |
| 254 | VN_LOCK(devvp, LK_EXCLUSIVE | LK_RETRY); |
| 255 | error = VOP_OPEN(devvp, ronly ? FREAD : FREAD|FWRITE, FSCRED, NULL); |
| 256 | VOP__UNLOCK(devvp, 0); |
| 257 | if (error) |
| 258 | return (error); |
| 259 | dev = devvp->v_rdev; |
| 260 | |
| 261 | /* |
| 262 | * Do actual mount |
| 263 | */ |
| 264 | hpmp = kmalloc(sizeof(struct hpfsmount), M_HPFSMNT, M_WAITOK | M_ZERO); |
| 265 | |
| 266 | /* Read in SuperBlock */ |
| 267 | error = bread(devvp, dbtodoff(SUBLOCK), SUSIZE, &bp); |
| 268 | if (error) |
| 269 | goto failed; |
| 270 | bcopy(bp->b_data, &hpmp->hpm_su, sizeof(struct sublock)); |
| 271 | brelse(bp); bp = NULL; |
| 272 | |
| 273 | /* Read in SpareBlock */ |
| 274 | error = bread(devvp, dbtodoff(SPBLOCK), SPSIZE, &bp); |
| 275 | if (error) |
| 276 | goto failed; |
| 277 | bcopy(bp->b_data, &hpmp->hpm_sp, sizeof(struct spblock)); |
| 278 | brelse(bp); bp = NULL; |
| 279 | |
| 280 | sup = &hpmp->hpm_su; |
| 281 | spp = &hpmp->hpm_sp; |
| 282 | |
| 283 | /* Check magic */ |
| 284 | if (sup->su_magic != SU_MAGIC) { |
| 285 | kprintf("hpfs_mountfs: SuperBlock MAGIC DOESN'T MATCH\n"); |
| 286 | error = EINVAL; |
| 287 | goto failed; |
| 288 | } |
| 289 | if (spp->sp_magic != SP_MAGIC) { |
| 290 | kprintf("hpfs_mountfs: SpareBlock MAGIC DOESN'T MATCH\n"); |
| 291 | error = EINVAL; |
| 292 | goto failed; |
| 293 | } |
| 294 | |
| 295 | mp->mnt_data = (qaddr_t)hpmp; |
| 296 | hpmp->hpm_devvp = devvp; |
| 297 | hpmp->hpm_dev = dev; |
| 298 | hpmp->hpm_mp = mp; |
| 299 | hpmp->hpm_uid = argsp->uid; |
| 300 | hpmp->hpm_gid = argsp->gid; |
| 301 | hpmp->hpm_mode = argsp->mode; |
| 302 | |
| 303 | error = hpfs_bminit(hpmp); |
| 304 | if (error) |
| 305 | goto failed; |
| 306 | |
| 307 | error = hpfs_cpinit(hpmp, argsp); |
| 308 | if (error) { |
| 309 | hpfs_bmdeinit(hpmp); |
| 310 | goto failed; |
| 311 | } |
| 312 | vfs_add_vnodeops(mp, &hpfs_vnode_vops, &mp->mnt_vn_norm_ops); |
| 313 | |
| 314 | error = hpfs_root(mp, &vp); |
| 315 | if (error) { |
| 316 | hpfs_cpdeinit(hpmp); |
| 317 | hpfs_bmdeinit(hpmp); |
| 318 | goto failed; |
| 319 | } |
| 320 | |
| 321 | vput(vp); |
| 322 | |
| 323 | mp->mnt_stat.f_fsid.val[0] = (long)dev2udev(dev); |
| 324 | mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum; |
| 325 | mp->mnt_maxsymlinklen = 0; |
| 326 | mp->mnt_flag |= MNT_LOCAL; |
| 327 | dev->si_mountpoint = mp; |
| 328 | return (0); |
| 329 | |
| 330 | failed: |
| 331 | if (bp) |
| 332 | brelse (bp); |
| 333 | mp->mnt_data = (qaddr_t)NULL; |
| 334 | dev->si_mountpoint = NULL; |
| 335 | VOP_CLOSE(devvp, ronly ? FREAD : FREAD|FWRITE); |
| 336 | return (error); |
| 337 | } |
| 338 | |
| 339 | |
| 340 | static int |
| 341 | hpfs_unmount(struct mount *mp, int mntflags) |
| 342 | { |
| 343 | int error, flags, ronly; |
| 344 | struct hpfsmount *hpmp = VFSTOHPFS(mp); |
| 345 | |
| 346 | dprintf(("hpfs_unmount():\n")); |
| 347 | |
| 348 | ronly = (mp->mnt_flag & MNT_RDONLY) != 0; |
| 349 | |
| 350 | flags = 0; |
| 351 | if(mntflags & MNT_FORCE) |
| 352 | flags |= FORCECLOSE; |
| 353 | |
| 354 | dprintf(("hpfs_unmount: vflushing...\n")); |
| 355 | |
| 356 | error = vflush(mp, 0, flags); |
| 357 | if (error) { |
| 358 | kprintf("hpfs_unmount: vflush failed: %d\n",error); |
| 359 | return (error); |
| 360 | } |
| 361 | |
| 362 | hpmp->hpm_devvp->v_rdev->si_mountpoint = NULL; |
| 363 | |
| 364 | vinvalbuf(hpmp->hpm_devvp, V_SAVE, 0, 0); |
| 365 | error = VOP_CLOSE(hpmp->hpm_devvp, ronly ? FREAD : FREAD|FWRITE); |
| 366 | |
| 367 | vrele(hpmp->hpm_devvp); |
| 368 | |
| 369 | dprintf(("hpfs_umount: freeing memory...\n")); |
| 370 | hpfs_cpdeinit(hpmp); |
| 371 | hpfs_bmdeinit(hpmp); |
| 372 | mp->mnt_data = (qaddr_t)0; |
| 373 | mp->mnt_flag &= ~MNT_LOCAL; |
| 374 | FREE(hpmp, M_HPFSMNT); |
| 375 | |
| 376 | return (0); |
| 377 | } |
| 378 | |
| 379 | static int |
| 380 | hpfs_root(struct mount *mp, struct vnode **vpp) |
| 381 | { |
| 382 | int error = 0; |
| 383 | struct hpfsmount *hpmp = VFSTOHPFS(mp); |
| 384 | |
| 385 | dprintf(("hpfs_root():\n")); |
| 386 | error = VFS_VGET(mp, NULL, (ino_t)hpmp->hpm_su.su_rootfno, vpp); |
| 387 | if(error) { |
| 388 | kprintf("hpfs_root: VFS_VGET failed: %d\n",error); |
| 389 | return (error); |
| 390 | } |
| 391 | |
| 392 | return (error); |
| 393 | } |
| 394 | |
| 395 | static int |
| 396 | hpfs_statfs(struct mount *mp, struct statfs *sbp, struct ucred *cred) |
| 397 | { |
| 398 | struct hpfsmount *hpmp = VFSTOHPFS(mp); |
| 399 | |
| 400 | dprintf(("hpfs_statfs(): HPFS%d.%d\n", |
| 401 | hpmp->hpm_su.su_hpfsver, hpmp->hpm_su.su_fnctver)); |
| 402 | |
| 403 | sbp->f_type = mp->mnt_vfc->vfc_typenum; |
| 404 | sbp->f_bsize = DEV_BSIZE; |
| 405 | sbp->f_iosize = DEV_BSIZE; |
| 406 | sbp->f_blocks = hpmp->hpm_su.su_btotal; |
| 407 | sbp->f_bfree = sbp->f_bavail = hpmp->hpm_bavail; |
| 408 | sbp->f_ffree = 0; |
| 409 | sbp->f_files = 0; |
| 410 | if (sbp != &mp->mnt_stat) { |
| 411 | bcopy((caddr_t)mp->mnt_stat.f_mntfromname, |
| 412 | (caddr_t)&sbp->f_mntfromname[0], MNAMELEN); |
| 413 | } |
| 414 | sbp->f_flags = mp->mnt_flag; |
| 415 | |
| 416 | return (0); |
| 417 | } |
| 418 | |
| 419 | |
| 420 | /*ARGSUSED*/ |
| 421 | static int |
| 422 | hpfs_fhtovp(struct mount *mp, struct vnode *rootvp, |
| 423 | struct fid *fhp, struct vnode **vpp) |
| 424 | { |
| 425 | struct vnode *nvp; |
| 426 | struct hpfid *hpfhp = (struct hpfid *)fhp; |
| 427 | int error; |
| 428 | |
| 429 | if ((error = VFS_VGET(mp, NULL, hpfhp->hpfid_ino, &nvp)) != 0) { |
| 430 | *vpp = NULLVP; |
| 431 | return (error); |
| 432 | } |
| 433 | /* XXX as unlink/rmdir/mkdir/creat are not currently possible |
| 434 | * with HPFS, we don't need to check anything else for now */ |
| 435 | *vpp = nvp; |
| 436 | |
| 437 | return (0); |
| 438 | } |
| 439 | |
| 440 | static int |
| 441 | hpfs_vptofh(struct vnode *vp, struct fid *fhp) |
| 442 | { |
| 443 | struct hpfsnode *hpp; |
| 444 | struct hpfid *hpfhp; |
| 445 | |
| 446 | hpp = VTOHP(vp); |
| 447 | hpfhp = (struct hpfid *)fhp; |
| 448 | hpfhp->hpfid_len = sizeof(struct hpfid); |
| 449 | hpfhp->hpfid_ino = hpp->h_no; |
| 450 | /* hpfhp->hpfid_gen = hpp->h_gen; */ |
| 451 | return (0); |
| 452 | } |
| 453 | |
| 454 | static int |
| 455 | hpfs_vget(struct mount *mp, struct vnode *dvp, ino_t ino, struct vnode **vpp) |
| 456 | { |
| 457 | struct hpfsmount *hpmp = VFSTOHPFS(mp); |
| 458 | struct vnode *vp; |
| 459 | struct hpfsnode *hp; |
| 460 | struct buf *bp; |
| 461 | int error; |
| 462 | |
| 463 | dprintf(("hpfs_vget(0x%x): ",ino)); |
| 464 | |
| 465 | *vpp = NULL; |
| 466 | hp = NULL; |
| 467 | vp = NULL; |
| 468 | |
| 469 | if ((*vpp = hpfs_hphashvget(hpmp->hpm_dev, ino)) != NULL) { |
| 470 | dprintf(("hashed\n")); |
| 471 | return (0); |
| 472 | } |
| 473 | |
| 474 | /* |
| 475 | * We have to lock node creation for a while, |
| 476 | * but then we have to call getnewvnode(), |
| 477 | * this may cause hpfs_reclaim() to be called, |
| 478 | * this may need to VOP_VGET() parent dir for |
| 479 | * update reasons, and if parent is not in |
| 480 | * hash, we have to lock node creation... |
| 481 | * To solve this, we MALLOC, getnewvnode and init while |
| 482 | * not locked (probability of node appearence |
| 483 | * at that time is little, and anyway - we'll |
| 484 | * check for it). |
| 485 | */ |
| 486 | MALLOC(hp, struct hpfsnode *, sizeof(struct hpfsnode), |
| 487 | M_HPFSNO, M_WAITOK); |
| 488 | |
| 489 | error = getnewvnode(VT_HPFS, hpmp->hpm_mp, &vp, VLKTIMEOUT, 0); |
| 490 | if (error) { |
| 491 | kprintf("hpfs_vget: can't get new vnode\n"); |
| 492 | FREE(hp, M_HPFSNO); |
| 493 | return (error); |
| 494 | } |
| 495 | |
| 496 | dprintf(("prenew ")); |
| 497 | |
| 498 | vp->v_data = hp; |
| 499 | |
| 500 | if (ino == (ino_t)hpmp->hpm_su.su_rootfno) |
| 501 | vsetflags(vp, VROOT); |
| 502 | |
| 503 | lwkt_token_init(&hp->h_interlock, 1); |
| 504 | |
| 505 | hp->h_flag = H_INVAL; |
| 506 | hp->h_vp = vp; |
| 507 | hp->h_hpmp = hpmp; |
| 508 | hp->h_no = ino; |
| 509 | hp->h_dev = hpmp->hpm_dev; |
| 510 | hp->h_uid = hpmp->hpm_uid; |
| 511 | hp->h_gid = hpmp->hpm_uid; |
| 512 | hp->h_mode = hpmp->hpm_mode; |
| 513 | hp->h_devvp = hpmp->hpm_devvp; |
| 514 | vref(hp->h_devvp); |
| 515 | |
| 516 | do { |
| 517 | if ((*vpp = hpfs_hphashvget(hpmp->hpm_dev, ino)) != NULL) { |
| 518 | dprintf(("hashed2\n")); |
| 519 | vx_put(vp); |
| 520 | return (0); |
| 521 | } |
| 522 | } while (LOCKMGR(&hpfs_hphash_lock, LK_EXCLUSIVE | LK_SLEEPFAIL)); |
| 523 | |
| 524 | hpfs_hphashins(hp); |
| 525 | |
| 526 | LOCKMGR(&hpfs_hphash_lock, LK_RELEASE); |
| 527 | |
| 528 | error = bread(hpmp->hpm_devvp, dbtodoff(ino), FNODESIZE, &bp); |
| 529 | if (error) { |
| 530 | kprintf("hpfs_vget: can't read ino %"PRId64"\n",ino); |
| 531 | vx_put(vp); |
| 532 | return (error); |
| 533 | } |
| 534 | bcopy(bp->b_data, &hp->h_fn, sizeof(struct fnode)); |
| 535 | brelse(bp); |
| 536 | |
| 537 | if (hp->h_fn.fn_magic != FN_MAGIC) { |
| 538 | kprintf("hpfs_vget: MAGIC DOESN'T MATCH\n"); |
| 539 | vx_put(vp); |
| 540 | return (EINVAL); |
| 541 | } |
| 542 | |
| 543 | vp->v_type = hp->h_fn.fn_flag ? VDIR:VREG; |
| 544 | hp->h_flag &= ~H_INVAL; |
| 545 | |
| 546 | /* Return the locked and refd vnode */ |
| 547 | *vpp = vp; |
| 548 | |
| 549 | return (0); |
| 550 | } |
| 551 | |
| 552 | static struct vfsops hpfs_vfsops = { |
| 553 | .vfs_mount = hpfs_mount, |
| 554 | .vfs_unmount = hpfs_unmount, |
| 555 | .vfs_root = hpfs_root, |
| 556 | .vfs_statfs = hpfs_statfs, |
| 557 | .vfs_sync = vfs_stdsync, |
| 558 | .vfs_vget = hpfs_vget, |
| 559 | .vfs_fhtovp = hpfs_fhtovp, |
| 560 | .vfs_checkexp = hpfs_checkexp, |
| 561 | .vfs_vptofh = hpfs_vptofh, |
| 562 | .vfs_init = hpfs_init, |
| 563 | .vfs_uninit = hpfs_hphash_uninit |
| 564 | }; |
| 565 | |
| 566 | VFS_SET(hpfs_vfsops, hpfs, 0); |
| 567 | |