| 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 | */ |
| 28 | |
| 29 | |
| 30 | #include <sys/param.h> |
| 31 | #include <sys/systm.h> |
| 32 | #include <sys/namei.h> |
| 33 | #include <sys/conf.h> |
| 34 | #include <sys/proc.h> |
| 35 | #include <sys/kernel.h> |
| 36 | #include <sys/vnode.h> |
| 37 | #include <sys/mount.h> |
| 38 | #include <sys/buf.h> |
| 39 | #include <sys/fcntl.h> |
| 40 | #include <sys/malloc.h> |
| 41 | |
| 42 | #include <vm/vm.h> |
| 43 | #include <vm/vm_param.h> |
| 44 | #if defined(__NetBSD__) |
| 45 | #include <vm/vm_prot.h> |
| 46 | #endif |
| 47 | #include <vm/vm_page.h> |
| 48 | #include <vm/vm_object.h> |
| 49 | #include <vm/vm_extern.h> |
| 50 | |
| 51 | #if defined(__NetBSD__) |
| 52 | #include <miscfs/specfs/specdev.h> |
| 53 | #endif |
| 54 | |
| 55 | #include <fs/hpfs/hpfs.h> |
| 56 | #include <fs/hpfs/hpfsmount.h> |
| 57 | #include <fs/hpfs/hpfs_subr.h> |
| 58 | |
| 59 | #if defined(__FreeBSD__) |
| 60 | MALLOC_DEFINE(M_HPFSMNT, "HPFS mount", "HPFS mount structure"); |
| 61 | MALLOC_DEFINE(M_HPFSNO, "HPFS node", "HPFS node structure"); |
| 62 | #endif |
| 63 | |
| 64 | static int hpfs_root __P((struct mount *, struct vnode **)); |
| 65 | static int hpfs_statfs __P((struct mount *, struct statfs *, |
| 66 | struct proc *)); |
| 67 | static int hpfs_unmount __P((struct mount *, int, struct proc *)); |
| 68 | static int hpfs_vget __P((struct mount *mp, ino_t ino, |
| 69 | struct vnode **vpp)); |
| 70 | static int hpfs_mountfs __P((register struct vnode *, struct mount *, |
| 71 | struct hpfs_args *, struct proc *)); |
| 72 | static int hpfs_vptofh __P((struct vnode *, struct fid *)); |
| 73 | static int hpfs_fhtovp __P((struct mount *, struct fid *, |
| 74 | struct vnode **)); |
| 75 | |
| 76 | #if !defined(__FreeBSD__) |
| 77 | static int hpfs_quotactl __P((struct mount *, int, uid_t, caddr_t, |
| 78 | struct proc *)); |
| 79 | static int hpfs_start __P((struct mount *, int, struct proc *)); |
| 80 | static int hpfs_sync __P((struct mount *, int, struct ucred *, |
| 81 | struct proc *)); |
| 82 | #endif |
| 83 | |
| 84 | #if defined(__FreeBSD__) |
| 85 | struct sockaddr; |
| 86 | static int hpfs_mount __P((struct mount *, char *, caddr_t, |
| 87 | struct nameidata *, struct proc *)); |
| 88 | static int hpfs_init __P((struct vfsconf *)); |
| 89 | static int hpfs_checkexp __P((struct mount *, struct sockaddr *, |
| 90 | int *, struct ucred **)); |
| 91 | #else /* defined(__NetBSD__) */ |
| 92 | static int hpfs_mount __P((struct mount *, const char *, void *, |
| 93 | struct nameidata *, struct proc *)); |
| 94 | static void hpfs_init __P((void)); |
| 95 | static int hpfs_mountroot __P((void)); |
| 96 | static int hpfs_sysctl __P((int *, u_int, void *, size_t *, void *, |
| 97 | size_t, struct proc *)); |
| 98 | static int hpfs_checkexp __P((struct mount *, struct mbuf *, |
| 99 | int *, struct ucred **)); |
| 100 | #endif |
| 101 | |
| 102 | /*ARGSUSED*/ |
| 103 | static int |
| 104 | hpfs_checkexp(mp, nam, exflagsp, credanonp) |
| 105 | #if defined(__FreeBSD__) |
| 106 | register struct mount *mp; |
| 107 | struct sockaddr *nam; |
| 108 | int *exflagsp; |
| 109 | struct ucred **credanonp; |
| 110 | #else /* defined(__NetBSD__) */ |
| 111 | register struct mount *mp; |
| 112 | struct mbuf *nam; |
| 113 | int *exflagsp; |
| 114 | struct ucred **credanonp; |
| 115 | #endif |
| 116 | { |
| 117 | register struct netcred *np; |
| 118 | register struct hpfsmount *hpm = VFSTOHPFS(mp); |
| 119 | |
| 120 | /* |
| 121 | * Get the export permission structure for this <mp, client> tuple. |
| 122 | */ |
| 123 | np = vfs_export_lookup(mp, &hpm->hpm_export, nam); |
| 124 | if (np == NULL) |
| 125 | return (EACCES); |
| 126 | |
| 127 | *exflagsp = np->netc_exflags; |
| 128 | *credanonp = &np->netc_anon; |
| 129 | return (0); |
| 130 | } |
| 131 | |
| 132 | #if !defined(__FreeBSD__) |
| 133 | /*ARGSUSED*/ |
| 134 | static int |
| 135 | hpfs_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p) |
| 136 | int *name; |
| 137 | u_int namelen; |
| 138 | void *oldp; |
| 139 | size_t *oldlenp; |
| 140 | void *newp; |
| 141 | size_t newlen; |
| 142 | struct proc *p; |
| 143 | { |
| 144 | return (EINVAL); |
| 145 | } |
| 146 | |
| 147 | static int |
| 148 | hpfs_mountroot() |
| 149 | { |
| 150 | return (EINVAL); |
| 151 | } |
| 152 | #endif |
| 153 | |
| 154 | #if defined(__FreeBSD__) |
| 155 | static int |
| 156 | hpfs_init ( |
| 157 | struct vfsconf *vcp ) |
| 158 | #else /* defined(__NetBSD__) */ |
| 159 | static void |
| 160 | hpfs_init () |
| 161 | #endif |
| 162 | { |
| 163 | dprintf(("hpfs_init():\n")); |
| 164 | |
| 165 | hpfs_hphashinit(); |
| 166 | #if defined(__FreeBSD__) |
| 167 | return 0; |
| 168 | #endif |
| 169 | } |
| 170 | |
| 171 | static int |
| 172 | hpfs_mount ( |
| 173 | struct mount *mp, |
| 174 | #if defined(__FreeBSD__) |
| 175 | char *path, |
| 176 | caddr_t data, |
| 177 | #else /* defined(__NetBSD__) */ |
| 178 | const char *path, |
| 179 | void *data, |
| 180 | #endif |
| 181 | struct nameidata *ndp, |
| 182 | struct proc *p ) |
| 183 | { |
| 184 | u_int size; |
| 185 | int err = 0; |
| 186 | struct vnode *devvp; |
| 187 | struct hpfs_args args; |
| 188 | struct hpfsmount *hpmp = 0; |
| 189 | |
| 190 | dprintf(("hpfs_mount():\n")); |
| 191 | /* |
| 192 | *** |
| 193 | * Mounting non-root file system or updating a file system |
| 194 | *** |
| 195 | */ |
| 196 | |
| 197 | /* copy in user arguments*/ |
| 198 | err = copyin(data, (caddr_t)&args, sizeof (struct hpfs_args)); |
| 199 | if (err) |
| 200 | goto error_1; /* can't get arguments*/ |
| 201 | |
| 202 | /* |
| 203 | * If updating, check whether changing from read-only to |
| 204 | * read/write; if there is no device name, that's all we do. |
| 205 | */ |
| 206 | if (mp->mnt_flag & MNT_UPDATE) { |
| 207 | dprintf(("hpfs_mount: MNT_UPDATE: ")); |
| 208 | |
| 209 | hpmp = VFSTOHPFS(mp); |
| 210 | |
| 211 | if (args.fspec == 0) { |
| 212 | dprintf(("export 0x%x\n",args.export.ex_flags)); |
| 213 | err = vfs_export(mp, &hpmp->hpm_export, &args.export); |
| 214 | if (err) { |
| 215 | printf("hpfs_mount: vfs_export failed %d\n", |
| 216 | err); |
| 217 | } |
| 218 | goto success; |
| 219 | } else { |
| 220 | dprintf(("name [FAILED]\n")); |
| 221 | err = EINVAL; |
| 222 | goto success; |
| 223 | } |
| 224 | dprintf(("\n")); |
| 225 | } |
| 226 | |
| 227 | /* |
| 228 | * Not an update, or updating the name: look up the name |
| 229 | * and verify that it refers to a sensible block device. |
| 230 | */ |
| 231 | NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args.fspec, p); |
| 232 | err = namei(ndp); |
| 233 | if (err) { |
| 234 | /* can't get devvp!*/ |
| 235 | goto error_1; |
| 236 | } |
| 237 | |
| 238 | devvp = ndp->ni_vp; |
| 239 | |
| 240 | #if defined(__FreeBSD__) |
| 241 | if (!vn_isdisk(devvp, &err)) |
| 242 | goto error_2; |
| 243 | #else /* defined(__NetBSD__) */ |
| 244 | if (devvp->v_type != VBLK) { |
| 245 | err = ENOTBLK; |
| 246 | goto error_2; |
| 247 | } |
| 248 | if (major(devvp->v_rdev) >= nblkdev) { |
| 249 | err = ENXIO; |
| 250 | goto error_2; |
| 251 | } |
| 252 | #endif |
| 253 | |
| 254 | /* |
| 255 | ******************** |
| 256 | * NEW MOUNT |
| 257 | ******************** |
| 258 | */ |
| 259 | |
| 260 | /* |
| 261 | * Since this is a new mount, we want the names for |
| 262 | * the device and the mount point copied in. If an |
| 263 | * error occurs, the mountpoint is discarded by the |
| 264 | * upper level code. |
| 265 | */ |
| 266 | /* Save "last mounted on" info for mount point (NULL pad)*/ |
| 267 | copyinstr( path, /* mount point*/ |
| 268 | mp->mnt_stat.f_mntonname, /* save area*/ |
| 269 | MNAMELEN - 1, /* max size*/ |
| 270 | &size); /* real size*/ |
| 271 | bzero( mp->mnt_stat.f_mntonname + size, MNAMELEN - size); |
| 272 | |
| 273 | /* Save "mounted from" info for mount point (NULL pad)*/ |
| 274 | copyinstr( args.fspec, /* device name*/ |
| 275 | mp->mnt_stat.f_mntfromname, /* save area*/ |
| 276 | MNAMELEN - 1, /* max size*/ |
| 277 | &size); /* real size*/ |
| 278 | bzero( mp->mnt_stat.f_mntfromname + size, MNAMELEN - size); |
| 279 | |
| 280 | err = hpfs_mountfs(devvp, mp, &args, p); |
| 281 | if (err) |
| 282 | goto error_2; |
| 283 | |
| 284 | /* |
| 285 | * Initialize FS stat information in mount struct; uses both |
| 286 | * mp->mnt_stat.f_mntonname and mp->mnt_stat.f_mntfromname |
| 287 | * |
| 288 | * This code is common to root and non-root mounts |
| 289 | */ |
| 290 | (void)VFS_STATFS(mp, &mp->mnt_stat, p); |
| 291 | |
| 292 | goto success; |
| 293 | |
| 294 | |
| 295 | error_2: /* error with devvp held*/ |
| 296 | |
| 297 | /* release devvp before failing*/ |
| 298 | vrele(devvp); |
| 299 | |
| 300 | error_1: /* no state to back out*/ |
| 301 | |
| 302 | success: |
| 303 | return( err); |
| 304 | } |
| 305 | |
| 306 | /* |
| 307 | * Common code for mount and mountroot |
| 308 | */ |
| 309 | int |
| 310 | hpfs_mountfs(devvp, mp, argsp, p) |
| 311 | register struct vnode *devvp; |
| 312 | struct mount *mp; |
| 313 | struct hpfs_args *argsp; |
| 314 | struct proc *p; |
| 315 | { |
| 316 | int error, ncount, ronly; |
| 317 | struct sublock *sup; |
| 318 | struct spblock *spp; |
| 319 | struct hpfsmount *hpmp; |
| 320 | struct buf *bp = NULL; |
| 321 | struct vnode *vp; |
| 322 | dev_t dev = devvp->v_rdev; |
| 323 | |
| 324 | dprintf(("hpfs_mountfs():\n")); |
| 325 | /* |
| 326 | * Disallow multiple mounts of the same device. |
| 327 | * Disallow mounting of a device that is currently in use |
| 328 | * (except for root, which might share swap device for miniroot). |
| 329 | * Flush out any old buffers remaining from a previous use. |
| 330 | */ |
| 331 | error = vfs_mountedon(devvp); |
| 332 | if (error) |
| 333 | return (error); |
| 334 | ncount = vcount(devvp); |
| 335 | #if defined(__FreeBSD__) |
| 336 | if (devvp->v_object) |
| 337 | ncount -= 1; |
| 338 | #endif |
| 339 | if (ncount > 1 && devvp != rootvp) |
| 340 | return (EBUSY); |
| 341 | |
| 342 | #if defined(__FreeBSD__) |
| 343 | VN_LOCK(devvp, LK_EXCLUSIVE | LK_RETRY, p); |
| 344 | error = vinvalbuf(devvp, V_SAVE, p->p_ucred, p, 0, 0); |
| 345 | VOP__UNLOCK(devvp, 0, p); |
| 346 | #else |
| 347 | error = vinvalbuf(devvp, V_SAVE, p->p_ucred, p, 0, 0); |
| 348 | #endif |
| 349 | if (error) |
| 350 | return (error); |
| 351 | |
| 352 | ronly = (mp->mnt_flag & MNT_RDONLY) != 0; |
| 353 | VN_LOCK(devvp, LK_EXCLUSIVE | LK_RETRY, p); |
| 354 | error = VOP_OPEN(devvp, ronly ? FREAD : FREAD|FWRITE, FSCRED, p); |
| 355 | VOP__UNLOCK(devvp, 0, p); |
| 356 | if (error) |
| 357 | return (error); |
| 358 | |
| 359 | /* |
| 360 | * Do actual mount |
| 361 | */ |
| 362 | hpmp = malloc(sizeof(struct hpfsmount), M_HPFSMNT, M_WAITOK); |
| 363 | bzero(hpmp, sizeof(struct hpfsmount)); |
| 364 | |
| 365 | /* Read in SuperBlock */ |
| 366 | error = bread(devvp, SUBLOCK, SUSIZE, NOCRED, &bp); |
| 367 | if (error) |
| 368 | goto failed; |
| 369 | bcopy(bp->b_data, &hpmp->hpm_su, sizeof(struct sublock)); |
| 370 | brelse(bp); bp = NULL; |
| 371 | |
| 372 | /* Read in SpareBlock */ |
| 373 | error = bread(devvp, SPBLOCK, SPSIZE, NOCRED, &bp); |
| 374 | if (error) |
| 375 | goto failed; |
| 376 | bcopy(bp->b_data, &hpmp->hpm_sp, sizeof(struct spblock)); |
| 377 | brelse(bp); bp = NULL; |
| 378 | |
| 379 | sup = &hpmp->hpm_su; |
| 380 | spp = &hpmp->hpm_sp; |
| 381 | |
| 382 | /* Check magic */ |
| 383 | if (sup->su_magic != SU_MAGIC) { |
| 384 | printf("hpfs_mountfs: SuperBlock MAGIC DOESN'T MATCH\n"); |
| 385 | error = EINVAL; |
| 386 | goto failed; |
| 387 | } |
| 388 | if (spp->sp_magic != SP_MAGIC) { |
| 389 | printf("hpfs_mountfs: SpareBlock MAGIC DOESN'T MATCH\n"); |
| 390 | error = EINVAL; |
| 391 | goto failed; |
| 392 | } |
| 393 | |
| 394 | mp->mnt_data = (qaddr_t)hpmp; |
| 395 | hpmp->hpm_devvp = devvp; |
| 396 | hpmp->hpm_dev = devvp->v_rdev; |
| 397 | hpmp->hpm_mp = mp; |
| 398 | hpmp->hpm_uid = argsp->uid; |
| 399 | hpmp->hpm_gid = argsp->gid; |
| 400 | hpmp->hpm_mode = argsp->mode; |
| 401 | |
| 402 | error = hpfs_bminit(hpmp); |
| 403 | if (error) |
| 404 | goto failed; |
| 405 | |
| 406 | error = hpfs_cpinit(hpmp, argsp); |
| 407 | if (error) { |
| 408 | hpfs_bmdeinit(hpmp); |
| 409 | goto failed; |
| 410 | } |
| 411 | |
| 412 | error = hpfs_root(mp, &vp); |
| 413 | if (error) { |
| 414 | hpfs_cpdeinit(hpmp); |
| 415 | hpfs_bmdeinit(hpmp); |
| 416 | goto failed; |
| 417 | } |
| 418 | |
| 419 | vput(vp); |
| 420 | |
| 421 | #if defined(__FreeBSD__) |
| 422 | mp->mnt_stat.f_fsid.val[0] = (long)dev2udev(dev); |
| 423 | mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum; |
| 424 | #else |
| 425 | mp->mnt_stat.f_fsid.val[0] = (long)dev; |
| 426 | mp->mnt_stat.f_fsid.val[1] = makefstype(MOUNT_HPFS); |
| 427 | #endif |
| 428 | mp->mnt_maxsymlinklen = 0; |
| 429 | mp->mnt_flag |= MNT_LOCAL; |
| 430 | devvp->v_specmountpoint = mp; |
| 431 | return (0); |
| 432 | |
| 433 | failed: |
| 434 | if (bp) |
| 435 | brelse (bp); |
| 436 | mp->mnt_data = (qaddr_t)NULL; |
| 437 | #if defined(__FreeBSD__) |
| 438 | devvp->v_specmountpoint = NULL; |
| 439 | #else |
| 440 | devvp->v_specflags &= ~SI_MOUNTEDON; |
| 441 | #endif |
| 442 | (void)VOP_CLOSE(devvp, ronly ? FREAD : FREAD|FWRITE, NOCRED, p); |
| 443 | return (error); |
| 444 | } |
| 445 | |
| 446 | #if !defined(__FreeBSD__) |
| 447 | static int |
| 448 | hpfs_start ( |
| 449 | struct mount *mp, |
| 450 | int flags, |
| 451 | struct proc *p ) |
| 452 | { |
| 453 | return (0); |
| 454 | } |
| 455 | #endif |
| 456 | |
| 457 | static int |
| 458 | hpfs_unmount( |
| 459 | struct mount *mp, |
| 460 | int mntflags, |
| 461 | struct proc *p) |
| 462 | { |
| 463 | int error, flags, ronly; |
| 464 | register struct hpfsmount *hpmp = VFSTOHPFS(mp); |
| 465 | |
| 466 | dprintf(("hpfs_unmount():\n")); |
| 467 | |
| 468 | ronly = (mp->mnt_flag & MNT_RDONLY) != 0; |
| 469 | |
| 470 | flags = 0; |
| 471 | if(mntflags & MNT_FORCE) |
| 472 | flags |= FORCECLOSE; |
| 473 | |
| 474 | dprintf(("hpfs_unmount: vflushing...\n")); |
| 475 | |
| 476 | error = vflush(mp, 0, flags); |
| 477 | if (error) { |
| 478 | printf("hpfs_unmount: vflush failed: %d\n",error); |
| 479 | return (error); |
| 480 | } |
| 481 | |
| 482 | #if defined(__FreeBSD__) |
| 483 | hpmp->hpm_devvp->v_specmountpoint = NULL; |
| 484 | #else |
| 485 | hpmp->hpm_devvp->v_specflags &= ~SI_MOUNTEDON; |
| 486 | #endif |
| 487 | |
| 488 | vinvalbuf(hpmp->hpm_devvp, V_SAVE, NOCRED, p, 0, 0); |
| 489 | error = VOP_CLOSE(hpmp->hpm_devvp, ronly ? FREAD : FREAD|FWRITE, |
| 490 | NOCRED, p); |
| 491 | |
| 492 | vrele(hpmp->hpm_devvp); |
| 493 | |
| 494 | dprintf(("hpfs_umount: freeing memory...\n")); |
| 495 | hpfs_cpdeinit(hpmp); |
| 496 | hpfs_bmdeinit(hpmp); |
| 497 | mp->mnt_data = (qaddr_t)0; |
| 498 | mp->mnt_flag &= ~MNT_LOCAL; |
| 499 | FREE(hpmp, M_HPFSMNT); |
| 500 | |
| 501 | return (0); |
| 502 | } |
| 503 | |
| 504 | static int |
| 505 | hpfs_root( |
| 506 | struct mount *mp, |
| 507 | struct vnode **vpp ) |
| 508 | { |
| 509 | int error = 0; |
| 510 | struct hpfsmount *hpmp = VFSTOHPFS(mp); |
| 511 | |
| 512 | dprintf(("hpfs_root():\n")); |
| 513 | error = VFS_VGET(mp, (ino_t)hpmp->hpm_su.su_rootfno, vpp); |
| 514 | if(error) { |
| 515 | printf("hpfs_root: VFS_VGET failed: %d\n",error); |
| 516 | return (error); |
| 517 | } |
| 518 | |
| 519 | return (error); |
| 520 | } |
| 521 | |
| 522 | static int |
| 523 | hpfs_statfs( |
| 524 | struct mount *mp, |
| 525 | struct statfs *sbp, |
| 526 | struct proc *p) |
| 527 | { |
| 528 | struct hpfsmount *hpmp = VFSTOHPFS(mp); |
| 529 | |
| 530 | dprintf(("hpfs_statfs(): HPFS%d.%d\n", |
| 531 | hpmp->hpm_su.su_hpfsver, hpmp->hpm_su.su_fnctver)); |
| 532 | |
| 533 | #if defined(__FreeBSD__) |
| 534 | sbp->f_type = mp->mnt_vfc->vfc_typenum; |
| 535 | #else /* defined(__NetBSD__) */ |
| 536 | sbp->f_type = 0; |
| 537 | #endif |
| 538 | sbp->f_bsize = DEV_BSIZE; |
| 539 | sbp->f_iosize = DEV_BSIZE; |
| 540 | sbp->f_blocks = hpmp->hpm_su.su_btotal; |
| 541 | sbp->f_bfree = sbp->f_bavail = hpmp->hpm_bavail; |
| 542 | sbp->f_ffree = 0; |
| 543 | sbp->f_files = 0; |
| 544 | if (sbp != &mp->mnt_stat) { |
| 545 | bcopy((caddr_t)mp->mnt_stat.f_mntonname, |
| 546 | (caddr_t)&sbp->f_mntonname[0], MNAMELEN); |
| 547 | bcopy((caddr_t)mp->mnt_stat.f_mntfromname, |
| 548 | (caddr_t)&sbp->f_mntfromname[0], MNAMELEN); |
| 549 | } |
| 550 | sbp->f_flags = mp->mnt_flag; |
| 551 | |
| 552 | return (0); |
| 553 | } |
| 554 | |
| 555 | #if !defined(__FreeBSD__) |
| 556 | static int |
| 557 | hpfs_sync ( |
| 558 | struct mount *mp, |
| 559 | int waitfor, |
| 560 | struct ucred *cred, |
| 561 | struct proc *p) |
| 562 | { |
| 563 | return (0); |
| 564 | } |
| 565 | |
| 566 | static int |
| 567 | hpfs_quotactl ( |
| 568 | struct mount *mp, |
| 569 | int cmds, |
| 570 | uid_t uid, |
| 571 | caddr_t arg, |
| 572 | struct proc *p) |
| 573 | { |
| 574 | printf("hpfs_quotactl():\n"); |
| 575 | return (EOPNOTSUPP); |
| 576 | } |
| 577 | #endif |
| 578 | |
| 579 | /*ARGSUSED*/ |
| 580 | static int |
| 581 | hpfs_fhtovp( |
| 582 | struct mount *mp, |
| 583 | struct fid *fhp, |
| 584 | struct vnode **vpp) |
| 585 | { |
| 586 | struct vnode *nvp; |
| 587 | struct hpfid *hpfhp = (struct hpfid *)fhp; |
| 588 | int error; |
| 589 | |
| 590 | if ((error = VFS_VGET(mp, hpfhp->hpfid_ino, &nvp)) != 0) { |
| 591 | *vpp = NULLVP; |
| 592 | return (error); |
| 593 | } |
| 594 | /* XXX as unlink/rmdir/mkdir/creat are not currently possible |
| 595 | * with HPFS, we don't need to check anything else for now */ |
| 596 | *vpp = nvp; |
| 597 | |
| 598 | return (0); |
| 599 | } |
| 600 | |
| 601 | static int |
| 602 | hpfs_vptofh( |
| 603 | struct vnode *vp, |
| 604 | struct fid *fhp) |
| 605 | { |
| 606 | register struct hpfsnode *hpp; |
| 607 | register struct hpfid *hpfhp; |
| 608 | |
| 609 | hpp = VTOHP(vp); |
| 610 | hpfhp = (struct hpfid *)fhp; |
| 611 | hpfhp->hpfid_len = sizeof(struct hpfid); |
| 612 | hpfhp->hpfid_ino = hpp->h_no; |
| 613 | /* hpfhp->hpfid_gen = hpp->h_gen; */ |
| 614 | return (0); |
| 615 | } |
| 616 | |
| 617 | static int |
| 618 | hpfs_vget( |
| 619 | struct mount *mp, |
| 620 | ino_t ino, |
| 621 | struct vnode **vpp) |
| 622 | { |
| 623 | struct hpfsmount *hpmp = VFSTOHPFS(mp); |
| 624 | struct vnode *vp; |
| 625 | struct hpfsnode *hp; |
| 626 | struct buf *bp; |
| 627 | struct proc *p = curproc; /* XXX */ |
| 628 | int error; |
| 629 | |
| 630 | dprintf(("hpfs_vget(0x%x): ",ino)); |
| 631 | |
| 632 | *vpp = NULL; |
| 633 | hp = NULL; |
| 634 | vp = NULL; |
| 635 | |
| 636 | if ((*vpp = hpfs_hphashvget(hpmp->hpm_dev, ino, p)) != NULL) { |
| 637 | dprintf(("hashed\n")); |
| 638 | return (0); |
| 639 | } |
| 640 | |
| 641 | /* |
| 642 | * We have to lock node creation for a while, |
| 643 | * but then we have to call getnewvnode(), |
| 644 | * this may cause hpfs_reclaim() to be called, |
| 645 | * this may need to VOP_VGET() parent dir for |
| 646 | * update reasons, and if parent is not in |
| 647 | * hash, we have to lock node creation... |
| 648 | * To solve this, we MALLOC, getnewvnode and init while |
| 649 | * not locked (probability of node appearence |
| 650 | * at that time is little, and anyway - we'll |
| 651 | * check for it). |
| 652 | */ |
| 653 | MALLOC(hp, struct hpfsnode *, sizeof(struct hpfsnode), |
| 654 | M_HPFSNO, M_WAITOK); |
| 655 | |
| 656 | error = getnewvnode(VT_HPFS, hpmp->hpm_mp, hpfs_vnodeop_p, &vp); |
| 657 | if (error) { |
| 658 | printf("hpfs_vget: can't get new vnode\n"); |
| 659 | FREE(hp, M_HPFSNO); |
| 660 | return (error); |
| 661 | } |
| 662 | |
| 663 | dprintf(("prenew ")); |
| 664 | |
| 665 | vp->v_data = hp; |
| 666 | |
| 667 | if (ino == (ino_t)hpmp->hpm_su.su_rootfno) |
| 668 | vp->v_flag |= VROOT; |
| 669 | |
| 670 | simple_lock_init(&hp->h_interlock); |
| 671 | lockinit(&hp->h_lock, PINOD, "hpnode", VLKTIMEOUT, 0); |
| 672 | |
| 673 | hp->h_flag = H_INVAL; |
| 674 | hp->h_vp = vp; |
| 675 | hp->h_hpmp = hpmp; |
| 676 | hp->h_no = ino; |
| 677 | hp->h_dev = hpmp->hpm_dev; |
| 678 | hp->h_uid = hpmp->hpm_uid; |
| 679 | hp->h_gid = hpmp->hpm_uid; |
| 680 | hp->h_mode = hpmp->hpm_mode; |
| 681 | hp->h_devvp = hpmp->hpm_devvp; |
| 682 | VREF(hp->h_devvp); |
| 683 | |
| 684 | error = VN_LOCK(vp, LK_EXCLUSIVE, p); |
| 685 | if (error) { |
| 686 | vput(vp); |
| 687 | return (error); |
| 688 | } |
| 689 | |
| 690 | do { |
| 691 | if ((*vpp = hpfs_hphashvget(hpmp->hpm_dev, ino, p)) != NULL) { |
| 692 | dprintf(("hashed2\n")); |
| 693 | vput(vp); |
| 694 | return (0); |
| 695 | } |
| 696 | } while(LOCKMGR(&hpfs_hphash_lock,LK_EXCLUSIVE|LK_SLEEPFAIL,NULL,NULL)); |
| 697 | |
| 698 | hpfs_hphashins(hp); |
| 699 | |
| 700 | LOCKMGR(&hpfs_hphash_lock, LK_RELEASE, NULL, NULL); |
| 701 | |
| 702 | error = bread(hpmp->hpm_devvp, ino, FNODESIZE, NOCRED, &bp); |
| 703 | if (error) { |
| 704 | printf("hpfs_vget: can't read ino %d\n",ino); |
| 705 | vput(vp); |
| 706 | return (error); |
| 707 | } |
| 708 | bcopy(bp->b_data, &hp->h_fn, sizeof(struct fnode)); |
| 709 | brelse(bp); |
| 710 | |
| 711 | if (hp->h_fn.fn_magic != FN_MAGIC) { |
| 712 | printf("hpfs_vget: MAGIC DOESN'T MATCH\n"); |
| 713 | vput(vp); |
| 714 | return (EINVAL); |
| 715 | } |
| 716 | |
| 717 | vp->v_type = hp->h_fn.fn_flag ? VDIR:VREG; |
| 718 | hp->h_flag &= ~H_INVAL; |
| 719 | |
| 720 | *vpp = vp; |
| 721 | |
| 722 | return (0); |
| 723 | } |
| 724 | |
| 725 | #if defined(__FreeBSD__) |
| 726 | static struct vfsops hpfs_vfsops = { |
| 727 | hpfs_mount, |
| 728 | vfs_stdstart, |
| 729 | hpfs_unmount, |
| 730 | hpfs_root, |
| 731 | vfs_stdquotactl, |
| 732 | hpfs_statfs, |
| 733 | vfs_stdsync, |
| 734 | hpfs_vget, |
| 735 | hpfs_fhtovp, |
| 736 | hpfs_checkexp, |
| 737 | hpfs_vptofh, |
| 738 | hpfs_init, |
| 739 | vfs_stduninit, |
| 740 | vfs_stdextattrctl, |
| 741 | }; |
| 742 | VFS_SET(hpfs_vfsops, hpfs, 0); |
| 743 | #else /* defined(__NetBSD__) */ |
| 744 | extern struct vnodeopv_desc hpfs_vnodeop_opv_desc; |
| 745 | |
| 746 | struct vnodeopv_desc *hpfs_vnodeopv_descs[] = { |
| 747 | &hpfs_vnodeop_opv_desc, |
| 748 | NULL, |
| 749 | }; |
| 750 | |
| 751 | struct vfsops hpfs_vfsops = { |
| 752 | MOUNT_HPFS, |
| 753 | hpfs_mount, |
| 754 | hpfs_start, |
| 755 | hpfs_unmount, |
| 756 | hpfs_root, |
| 757 | hpfs_quotactl, |
| 758 | hpfs_statfs, |
| 759 | hpfs_sync, |
| 760 | hpfs_vget, |
| 761 | hpfs_fhtovp, |
| 762 | hpfs_vptofh, |
| 763 | hpfs_init, |
| 764 | hpfs_sysctl, |
| 765 | hpfs_mountroot, |
| 766 | hpfs_checkexp, |
| 767 | hpfs_vnodeopv_descs, |
| 768 | }; |
| 769 | #endif |