1/* $NetBSD: advfsops.c,v 1.63 2011/11/14 18:35:12 hannken Exp $ */ 2 3/* 4 * Copyright (c) 1994 Christian E. Hopps 5 * Copyright (c) 1996 Matthias Scheler 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Christian E. Hopps. 19 * 4. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34#include <sys/cdefs.h> 35__KERNEL_RCSID(0, "$NetBSD: advfsops.c,v 1.63 2011/11/14 18:35:12 hannken Exp $"); 36 37#if defined(_KERNEL_OPT) 38#include "opt_compat_netbsd.h" 39#endif 40 41#include <sys/param.h> 42#include <sys/systm.h> 43#include <sys/sysctl.h> 44#include <sys/vnode.h> 45#include <sys/mount.h> 46#include <sys/proc.h> 47#include <sys/time.h> 48#include <sys/malloc.h> 49#include <sys/pool.h> 50#include <sys/disklabel.h> 51#include <miscfs/genfs/genfs.h> 52#include <miscfs/specfs/specdev.h> /* XXX */ 53#include <sys/fcntl.h> 54#include <sys/namei.h> 55#include <sys/ioctl.h> 56#include <sys/queue.h> 57#include <sys/buf.h> 58#include <sys/conf.h> 59#include <sys/kauth.h> 60#include <sys/module.h> 61#include <fs/adosfs/adosfs.h> 62 63MODULE(MODULE_CLASS_VFS, adosfs, NULL); 64 65VFS_PROTOS(adosfs); 66 67static struct sysctllog *adosfs_sysctl_log; 68 69int adosfs_mountfs(struct vnode *, struct mount *, struct lwp *); 70int adosfs_loadbitmap(struct adosfsmount *); 71 72kmutex_t adosfs_hashlock; 73 74struct pool adosfs_node_pool; 75 76MALLOC_JUSTDEFINE(M_ANODE, "adosfs anode","adosfs anode structures and tables"); 77 78static const struct genfs_ops adosfs_genfsops = { 79 .gop_size = genfs_size, 80}; 81 82int (**adosfs_vnodeop_p)(void *); 83 84int 85adosfs_mount(struct mount *mp, const char *path, void *data, size_t *data_len) 86{ 87 struct lwp *l = curlwp; 88 struct vnode *devvp; 89 struct adosfs_args *args = data; 90 struct adosfsmount *amp; 91 int error; 92 mode_t accessmode; 93 94 if (args == NULL) 95 return EINVAL; 96 if (*data_len < sizeof *args) 97 return EINVAL; 98 99 if (mp->mnt_flag & MNT_GETARGS) { 100 amp = VFSTOADOSFS(mp); 101 if (amp == NULL) 102 return EIO; 103 args->uid = amp->uid; 104 args->gid = amp->gid; 105 args->mask = amp->mask; 106 args->fspec = NULL; 107 *data_len = sizeof *args; 108 return 0; 109 } 110 111 if ((mp->mnt_flag & MNT_RDONLY) == 0) 112 return (EROFS); 113 114 if ((mp->mnt_flag & MNT_UPDATE) && args->fspec == NULL) 115 return EOPNOTSUPP; 116 117 /* 118 * Not an update, or updating the name: look up the name 119 * and verify that it refers to a sensible block device. 120 */ 121 error = namei_simple_user(args->fspec, 122 NSM_FOLLOW_NOEMULROOT, &devvp); 123 if (error != 0) 124 return (error); 125 126 if (devvp->v_type != VBLK) { 127 vrele(devvp); 128 return (ENOTBLK); 129 } 130 if (bdevsw_lookup(devvp->v_rdev) == NULL) { 131 vrele(devvp); 132 return (ENXIO); 133 } 134 /* 135 * If mount by non-root, then verify that user has necessary 136 * permissions on the device. 137 */ 138 accessmode = VREAD; 139 if ((mp->mnt_flag & MNT_RDONLY) == 0) 140 accessmode |= VWRITE; 141 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 142 error = genfs_can_mount(devvp, accessmode, l->l_cred); 143 VOP_UNLOCK(devvp); 144 if (error) { 145 vrele(devvp); 146 return (error); 147 } 148/* MNT_UPDATE? */ 149 if ((error = adosfs_mountfs(devvp, mp, l)) != 0) { 150 vrele(devvp); 151 return (error); 152 } 153 amp = VFSTOADOSFS(mp); 154 amp->uid = args->uid; 155 amp->gid = args->gid; 156 amp->mask = args->mask; 157 return set_statvfs_info(path, UIO_USERSPACE, args->fspec, UIO_USERSPACE, 158 mp->mnt_op->vfs_name, mp, l); 159} 160 161int 162adosfs_mountfs(struct vnode *devvp, struct mount *mp, struct lwp *l) 163{ 164 struct disklabel dl; 165 struct partition *parp; 166 struct adosfsmount *amp; 167 struct buf *bp; 168 struct vnode *rvp; 169 size_t bitmap_sz = 0; 170 int error, part, i; 171 172 part = DISKPART(devvp->v_rdev); 173 amp = NULL; 174 175 if ((error = vinvalbuf(devvp, V_SAVE, l->l_cred, l, 0, 0)) != 0) 176 return (error); 177 178 /* 179 * open blkdev and read root block 180 */ 181 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 182 if ((error = VOP_OPEN(devvp, FREAD, NOCRED)) != 0) { 183 VOP_UNLOCK(devvp); 184 return (error); 185 } 186 error = VOP_IOCTL(devvp, DIOCGDINFO, &dl, FREAD, NOCRED); 187 VOP_UNLOCK(devvp); 188 if (error) 189 goto fail; 190 191 parp = &dl.d_partitions[part]; 192 amp = kmem_zalloc(sizeof(struct adosfsmount), KM_SLEEP); 193 amp->mp = mp; 194 if (dl.d_type == DTYPE_FLOPPY) { 195 amp->bsize = dl.d_secsize; 196 amp->secsperblk = 1; 197 } 198 else { 199 amp->bsize = parp->p_fsize * parp->p_frag; 200 amp->secsperblk = parp->p_frag; 201 } 202 203 /* invalid fs ? */ 204 if (amp->secsperblk == 0) { 205 error = EINVAL; 206 goto fail; 207 } 208 209 bp = NULL; 210 if ((error = bread(devvp, (daddr_t)BBOFF, 211 amp->bsize, NOCRED, 0, &bp)) != 0) { 212 brelse(bp, 0); 213 goto fail; 214 } 215 amp->dostype = adoswordn(bp, 0); 216 brelse(bp, 0); 217 218 /* basic sanity checks */ 219 if (amp->dostype < 0x444f5300 || amp->dostype > 0x444f5305) { 220 error = EINVAL; 221 goto fail; 222 } 223 224 amp->rootb = (parp->p_size / amp->secsperblk - 1 + parp->p_cpg) >> 1; 225 amp->numblks = parp->p_size / amp->secsperblk - parp->p_cpg; 226 227 amp->nwords = amp->bsize >> 2; 228 amp->dbsize = amp->bsize - (IS_FFS(amp) ? 0 : OFS_DATA_OFFSET); 229 amp->devvp = devvp; 230 231 mp->mnt_data = amp; 232 mp->mnt_stat.f_fsidx.__fsid_val[0] = (long)devvp->v_rdev; 233 mp->mnt_stat.f_fsidx.__fsid_val[1] = makefstype(MOUNT_ADOSFS); 234 mp->mnt_stat.f_fsid = mp->mnt_stat.f_fsidx.__fsid_val[0]; 235 mp->mnt_stat.f_namemax = ADMAXNAMELEN; 236 mp->mnt_fs_bshift = ffs(amp->bsize) - 1; 237 mp->mnt_dev_bshift = DEV_BSHIFT; /* XXX */ 238 mp->mnt_flag |= MNT_LOCAL; 239 240 /* 241 * init anode table. 242 */ 243 for (i = 0; i < ANODEHASHSZ; i++) 244 LIST_INIT(&->anodetab[i]); 245 246 /* 247 * get the root anode, if not a valid fs this will fail. 248 */ 249 if ((error = VFS_ROOT(mp, &rvp)) != 0) 250 goto fail; 251 /* allocate and load bitmap, set free space */ 252 bitmap_sz = ((amp->numblks + 31) / 32) * sizeof(*amp->bitmap); 253 amp->bitmap = kmem_alloc(bitmap_sz, KM_SLEEP); 254 if (amp->bitmap) 255 adosfs_loadbitmap(amp); 256 if (mp->mnt_flag & MNT_RDONLY && amp->bitmap) { 257 /* 258 * Don't need the bitmap any more if it's read-only. 259 */ 260 kmem_free(amp->bitmap, bitmap_sz); 261 amp->bitmap = NULL; 262 } 263 vput(rvp); 264 265 return(0); 266 267fail: 268 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 269 (void) VOP_CLOSE(devvp, FREAD, NOCRED); 270 VOP_UNLOCK(devvp); 271 if (amp && amp->bitmap) 272 kmem_free(amp->bitmap, bitmap_sz); 273 if (amp) 274 kmem_free(amp, sizeof(*amp)); 275 return (error); 276} 277 278int 279adosfs_start(struct mount *mp, int flags) 280{ 281 282 return (0); 283} 284 285int 286adosfs_unmount(struct mount *mp, int mntflags) 287{ 288 struct adosfsmount *amp; 289 int error, flags; 290 291 flags = 0; 292 if (mntflags & MNT_FORCE) 293 flags |= FORCECLOSE; 294 if ((error = vflush(mp, NULLVP, flags)) != 0) 295 return (error); 296 amp = VFSTOADOSFS(mp); 297 if (amp->devvp->v_type != VBAD) 298 amp->devvp->v_specmountpoint = NULL; 299 vn_lock(amp->devvp, LK_EXCLUSIVE | LK_RETRY); 300 error = VOP_CLOSE(amp->devvp, FREAD, NOCRED); 301 vput(amp->devvp); 302 if (amp->bitmap) { 303 size_t bitmap_sz = ((amp->numblks + 31) / 32) * 304 sizeof(*amp->bitmap); 305 kmem_free(amp->bitmap, bitmap_sz); 306 } 307 kmem_free(amp, sizeof(*amp)); 308 mp->mnt_data = NULL; 309 mp->mnt_flag &= ~MNT_LOCAL; 310 return (error); 311} 312 313int 314adosfs_root(struct mount *mp, struct vnode **vpp) 315{ 316 struct vnode *nvp; 317 int error; 318 319 if ((error = VFS_VGET(mp, (ino_t)VFSTOADOSFS(mp)->rootb, &nvp)) != 0) 320 return (error); 321 /* XXX verify it's a root block? */ 322 *vpp = nvp; 323 return (0); 324} 325 326int 327adosfs_statvfs(struct mount *mp, struct statvfs *sbp) 328{ 329 struct adosfsmount *amp; 330 331 amp = VFSTOADOSFS(mp); 332 sbp->f_bsize = amp->bsize; 333 sbp->f_frsize = amp->bsize; 334 sbp->f_iosize = amp->dbsize; 335 sbp->f_blocks = amp->numblks; 336 sbp->f_bfree = amp->freeblks; 337 sbp->f_bavail = amp->freeblks; 338 sbp->f_bresvd = 0; 339 sbp->f_files = 0; /* who knows */ 340 sbp->f_ffree = 0; /* " " */ 341 sbp->f_favail = 0; /* " " */ 342 sbp->f_fresvd = 0; 343 copy_statvfs_info(sbp, mp); 344 return (0); 345} 346 347/* 348 * lookup an anode, check mount's hash table if not found, create 349 * return locked and referenced al la vget(vp, 1); 350 */ 351int 352adosfs_vget(struct mount *mp, ino_t an, struct vnode **vpp) 353{ 354 struct adosfsmount *amp; 355 struct vnode *vp; 356 struct anode *ap; 357 struct buf *bp; 358 char *nam, *tmp; 359 int namlen, error; 360 361 error = 0; 362 amp = VFSTOADOSFS(mp); 363 bp = NULL; 364 365 /* 366 * check hash table. we are done if found 367 */ 368 if ((*vpp = adosfs_ahashget(mp, an)) != NULL) 369 return (0); 370 371 error = getnewvnode(VT_ADOSFS, mp, adosfs_vnodeop_p, NULL, &vp); 372 if (error) 373 return (error); 374 375 /* 376 * setup, insert in hash, and lock before io. 377 */ 378 vp->v_data = ap = pool_get(&adosfs_node_pool, PR_WAITOK); 379 memset(ap, 0, sizeof(struct anode)); 380 ap->vp = vp; 381 ap->amp = amp; 382 ap->block = an; 383 ap->nwords = amp->nwords; 384 genfs_node_init(vp, &adosfs_genfsops); 385 adosfs_ainshash(amp, ap); 386 387 if ((error = bread(amp->devvp, an * amp->bsize / DEV_BSIZE, 388 amp->bsize, NOCRED, 0, &bp)) != 0) { 389 brelse(bp, 0); 390 vput(vp); 391 return (error); 392 } 393 394 /* 395 * get type and fill rest in based on that. 396 */ 397 switch (ap->type = adosfs_getblktype(amp, bp)) { 398 case AROOT: 399 vp->v_type = VDIR; 400 vp->v_vflag |= VV_ROOT; 401 ap->mtimev.days = adoswordn(bp, ap->nwords - 10); 402 ap->mtimev.mins = adoswordn(bp, ap->nwords - 9); 403 ap->mtimev.ticks = adoswordn(bp, ap->nwords - 8); 404 ap->created.days = adoswordn(bp, ap->nwords - 7); 405 ap->created.mins = adoswordn(bp, ap->nwords - 6); 406 ap->created.ticks = adoswordn(bp, ap->nwords - 5); 407 break; 408 case ALDIR: 409 case ADIR: 410 vp->v_type = VDIR; 411 break; 412 case ALFILE: 413 case AFILE: 414 vp->v_type = VREG; 415 ap->fsize = adoswordn(bp, ap->nwords - 47); 416 break; 417 case ASLINK: /* XXX soft link */ 418 vp->v_type = VLNK; 419 /* 420 * convert from BCPL string and 421 * from: "part:dir/file" to: "/part/dir/file" 422 */ 423 nam = (char *)bp->b_data + (6 * sizeof(long)); 424 namlen = strlen(nam); 425 tmp = nam; 426 while (*tmp && *tmp != ':') 427 tmp++; 428 if (*tmp == 0) { 429 ap->slinkto = malloc(namlen + 1, M_ANODE, M_WAITOK); 430 memcpy(ap->slinkto, nam, namlen); 431 } else if (*nam == ':') { 432 ap->slinkto = malloc(namlen + 1, M_ANODE, M_WAITOK); 433 memcpy(ap->slinkto, nam, namlen); 434 ap->slinkto[0] = '/'; 435 } else { 436 ap->slinkto = malloc(namlen + 2, M_ANODE, M_WAITOK); 437 ap->slinkto[0] = '/'; 438 memcpy(&ap->slinkto[1], nam, namlen); 439 ap->slinkto[tmp - nam + 1] = '/'; 440 namlen++; 441 } 442 ap->slinkto[namlen] = 0; 443 ap->fsize = namlen; 444 break; 445 default: 446 brelse(bp, 0); 447 vput(vp); 448 return (EINVAL); 449 } 450 451 /* 452 * Get appropriate data from this block; hard link needs 453 * to get other data from the "real" block. 454 */ 455 456 /* 457 * copy in name (from original block) 458 */ 459 nam = (char *)bp->b_data + (ap->nwords - 20) * sizeof(u_int32_t); 460 namlen = *(u_char *)nam++; 461 if (namlen > 30) { 462#ifdef DIAGNOSTIC 463 printf("adosfs: aget: name length too long blk %llu\n", 464 (unsigned long long)an); 465#endif 466 brelse(bp, 0); 467 vput(vp); 468 return (EINVAL); 469 } 470 memcpy(ap->name, nam, namlen); 471 ap->name[namlen] = 0; 472 473 /* 474 * if dir alloc hash table and copy it in 475 */ 476 if (vp->v_type == VDIR) { 477 int i; 478 479 ap->tab = malloc(ANODETABSZ(ap) * 2, M_ANODE, M_WAITOK); 480 ap->ntabent = ANODETABENT(ap); 481 ap->tabi = (int *)&ap->tab[ap->ntabent]; 482 memset(ap->tabi, 0, ANODETABSZ(ap)); 483 for (i = 0; i < ap->ntabent; i++) 484 ap->tab[i] = adoswordn(bp, i + 6); 485 } 486 487 /* 488 * misc. 489 */ 490 ap->pblock = adoswordn(bp, ap->nwords - 3); 491 ap->hashf = adoswordn(bp, ap->nwords - 4); 492 ap->linknext = adoswordn(bp, ap->nwords - 10); 493 ap->linkto = adoswordn(bp, ap->nwords - 11); 494 495 /* 496 * setup last indirect block cache. 497 */ 498 ap->lastlindblk = 0; 499 if (ap->type == AFILE) { 500 ap->lastindblk = ap->block; 501 if (adoswordn(bp, ap->nwords - 10)) 502 ap->linkto = ap->block; 503 } else if (ap->type == ALFILE) { 504 ap->lastindblk = ap->linkto; 505 brelse(bp, 0); 506 bp = NULL; 507 error = bread(amp->devvp, ap->linkto * amp->bsize / DEV_BSIZE, 508 amp->bsize, NOCRED, 0, &bp); 509 if (error) { 510 brelse(bp, 0); 511 vput(vp); 512 return (error); 513 } 514 ap->fsize = adoswordn(bp, ap->nwords - 47); 515 /* 516 * Should ap->block be set to the real file header block? 517 */ 518 ap->block = ap->linkto; 519 } 520 521 if (ap->type == AROOT) { 522 ap->adprot = 15; 523 ap->uid = amp->uid; 524 ap->gid = amp->gid; 525 } else { 526 ap->adprot = adoswordn(bp, ap->nwords - 48) ^ 15; 527 /* 528 * ADOS directories do not have a `x' protection bit as 529 * it is known in VFS; this functionality is fulfilled 530 * by the ADOS `r' bit. 531 * 532 * To retain the ADOS behaviour, fake execute permissions 533 * in that case. 534 */ 535 if ((ap->type == ADIR || ap->type == ALDIR) && 536 (ap->adprot & 0x00000008) == 0) 537 ap->adprot &= ~0x00000002; 538 539 /* 540 * Get uid/gid from extensions in file header 541 * (really need to know if this is a muFS partition) 542 */ 543 ap->uid = (adoswordn(bp, ap->nwords - 49) >> 16) & 0xffff; 544 ap->gid = adoswordn(bp, ap->nwords - 49) & 0xffff; 545 if (ap->uid || ap->gid) { 546 if (ap->uid == 0xffff) 547 ap->uid = 0; 548 if (ap->gid == 0xffff) 549 ap->gid = 0; 550 ap->adprot |= 0x40000000; /* Kludge */ 551 } 552 else { 553 /* 554 * uid & gid extension don't exist, 555 * so use the mount-point uid/gid 556 */ 557 ap->uid = amp->uid; 558 ap->gid = amp->gid; 559 } 560 } 561 ap->mtime.days = adoswordn(bp, ap->nwords - 23); 562 ap->mtime.mins = adoswordn(bp, ap->nwords - 22); 563 ap->mtime.ticks = adoswordn(bp, ap->nwords - 21); 564 565 *vpp = vp; 566 brelse(bp, 0); 567 uvm_vnp_setsize(vp, ap->fsize); 568 return (0); 569} 570 571/* 572 * Load the bitmap into memory, and count the number of available 573 * blocks. 574 * The bitmap will be released if the filesystem is read-only; it's 575 * only needed to find the free space. 576 */ 577int 578adosfs_loadbitmap(struct adosfsmount *amp) 579{ 580 struct buf *bp, *mapbp; 581 u_long bn; 582 int blkix, endix, mapix; 583 int bmsize; 584 int error; 585 586 bp = mapbp = NULL; 587 bn = amp->rootb; 588 if ((error = bread(amp->devvp, bn * amp->bsize / DEV_BSIZE, amp->bsize, 589 NOCRED, 0, &bp)) != 0) { 590 brelse(bp, 0); 591 return (error); 592 } 593 blkix = amp->nwords - 49; 594 endix = amp->nwords - 24; 595 mapix = 0; 596 bmsize = (amp->numblks + 31) / 32; 597 while (mapix < bmsize) { 598 int n; 599 u_long bits; 600 601 if (adoswordn(bp, blkix) == 0) 602 break; 603 if (mapbp != NULL) 604 brelse(mapbp, 0); 605 if ((error = bread(amp->devvp, 606 adoswordn(bp, blkix) * amp->bsize / DEV_BSIZE, amp->bsize, 607 NOCRED, 0, &mapbp)) != 0) 608 break; 609 if (adoscksum(mapbp, amp->nwords)) { 610#ifdef DIAGNOSTIC 611 printf("adosfs: loadbitmap - cksum of blk %d failed\n", 612 adoswordn(bp, blkix)); 613#endif 614 /* XXX Force read-only? Set free space 0? */ 615 break; 616 } 617 n = 1; 618 while (n < amp->nwords && mapix < bmsize) { 619 amp->bitmap[mapix++] = bits = adoswordn(mapbp, n); 620 ++n; 621 if (mapix == bmsize && amp->numblks & 31) 622 bits &= ~(0xffffffff << (amp->numblks & 31)); 623 while (bits) { 624 if (bits & 1) 625 ++amp->freeblks; 626 bits >>= 1; 627 } 628 } 629 ++blkix; 630 if (mapix < bmsize && blkix == endix) { 631 bn = adoswordn(bp, blkix); 632 brelse(bp, 0); 633 if ((error = bread(amp->devvp, bn * amp->bsize / DEV_BSIZE, 634 amp->bsize, NOCRED, 0, &bp)) != 0) 635 break; 636 /* 637 * Why is there no checksum on these blocks? 638 */ 639 blkix = 0; 640 endix = amp->nwords - 1; 641 } 642 } 643 if (bp) 644 brelse(bp, 0); 645 if (mapbp) 646 brelse(mapbp, 0); 647 return (error); 648} 649 650 651/* 652 * File handle to vnode 653 * 654 * Have to be really careful about stale file handles: 655 * - check that the inode number is in range 656 * - call iget() to get the locked inode 657 * - check for an unallocated inode (i_mode == 0) 658 * - check that the generation number matches 659 */ 660 661struct ifid { 662 ushort ifid_len; 663 ushort ifid_pad; 664 int ifid_ino; 665 long ifid_start; 666}; 667 668int 669adosfs_fhtovp(struct mount *mp, struct fid *fhp, struct vnode **vpp) 670{ 671 struct ifid ifh; 672#if 0 673 struct anode *ap; 674#endif 675 struct vnode *nvp; 676 int error; 677 678 if (fhp->fid_len != sizeof(struct ifid)) 679 return EINVAL; 680 681#ifdef ADOSFS_DIAGNOSTIC 682 printf("adfhtovp(%p, %p, %p)\n", mp, fhp, vpp); 683#endif 684 685 memcpy(&ifh, fhp, sizeof(ifh)); 686 687 if ((error = VFS_VGET(mp, ifh.ifid_ino, &nvp)) != 0) { 688 *vpp = NULLVP; 689 return (error); 690 } 691#if 0 692 ap = VTOA(nvp); 693 if (ap->inode.iso_mode == 0) { 694 vput(nvp); 695 *vpp = NULLVP; 696 return (ESTALE); 697 } 698#endif 699 *vpp = nvp; 700 return(0); 701} 702 703int 704adosfs_vptofh(struct vnode *vp, struct fid *fhp, size_t *fh_size) 705{ 706 struct anode *ap = VTOA(vp); 707 struct ifid ifh; 708 709 if (*fh_size < sizeof(struct ifid)) { 710 *fh_size = sizeof(struct ifid); 711 return E2BIG; 712 } 713 *fh_size = sizeof(struct ifid); 714 715 memset(&ifh, 0, sizeof(ifh)); 716 ifh.ifid_len = sizeof(struct ifid); 717 ifh.ifid_ino = ap->block; 718 ifh.ifid_start = ap->block; 719 memcpy(fhp, &ifh, sizeof(ifh)); 720 721#ifdef ADOSFS_DIAGNOSTIC 722 printf("advptofh(%p, %p)\n", vp, fhp); 723#endif 724 return(0); 725} 726 727int 728adosfs_sync(struct mount *mp, int waitfor, kauth_cred_t uc) 729{ 730#ifdef ADOSFS_DIAGNOSTIC 731 printf("ad_sync(%p, %d)\n", mp, waitfor); 732#endif 733 return(0); 734} 735 736void 737adosfs_init(void) 738{ 739 740 malloc_type_attach(M_ANODE); 741 mutex_init(&adosfs_hashlock, MUTEX_DEFAULT, IPL_NONE); 742 pool_init(&adosfs_node_pool, sizeof(struct anode), 0, 0, 0, "adosndpl", 743 &pool_allocator_nointr, IPL_NONE); 744} 745 746void 747adosfs_done(void) 748{ 749 750 pool_destroy(&adosfs_node_pool); 751 mutex_destroy(&adosfs_hashlock); 752 malloc_type_detach(M_ANODE); 753} 754 755/* 756 * vfs generic function call table 757 */ 758 759extern const struct vnodeopv_desc adosfs_vnodeop_opv_desc; 760 761const struct vnodeopv_desc *adosfs_vnodeopv_descs[] = { 762 &adosfs_vnodeop_opv_desc, 763 NULL, 764}; 765 766struct vfsops adosfs_vfsops = { 767 MOUNT_ADOSFS, 768 sizeof (struct adosfs_args), 769 adosfs_mount, 770 adosfs_start, 771 adosfs_unmount, 772 adosfs_root, 773 (void *)eopnotsupp, /* vfs_quotactl */ 774 adosfs_statvfs, 775 adosfs_sync, 776 adosfs_vget, 777 adosfs_fhtovp, 778 adosfs_vptofh, 779 adosfs_init, 780 NULL, 781 adosfs_done, 782 NULL, /* vfs_mountroot */ 783 (int (*)(struct mount *, struct vnode *, struct timespec *)) eopnotsupp, 784 vfs_stdextattrctl, 785 (void *)eopnotsupp, /* vfs_suspendctl */ 786 genfs_renamelock_enter, 787 genfs_renamelock_exit, 788 (void *)eopnotsupp, 789 adosfs_vnodeopv_descs, 790 0, 791 { NULL, NULL }, 792}; 793 794static int 795adosfs_modcmd(modcmd_t cmd, void *arg) 796{ 797 int error; 798 799 switch (cmd) { 800 case MODULE_CMD_INIT: 801 error = vfs_attach(&adosfs_vfsops); 802 if (error != 0) 803 break; 804 sysctl_createv(&adosfs_sysctl_log, 0, NULL, NULL, 805 CTLFLAG_PERMANENT, 806 CTLTYPE_NODE, "vfs", NULL, 807 NULL, 0, NULL, 0, 808 CTL_VFS, CTL_EOL); 809 sysctl_createv(&adosfs_sysctl_log, 0, NULL, NULL, 810 CTLFLAG_PERMANENT, 811 CTLTYPE_NODE, "adosfs", 812 SYSCTL_DESCR("AmigaDOS file system"), 813 NULL, 0, NULL, 0, 814 CTL_VFS, 16, CTL_EOL); 815 /* 816 * XXX the "16" above could be dynamic, thereby eliminating 817 * one more instance of the "number to vfs" mapping problem, 818 * but "16" is the order as taken from sys/mount.h 819 */ 820 break; 821 case MODULE_CMD_FINI: 822 error = vfs_detach(&adosfs_vfsops); 823 if (error != 0) 824 break; 825 sysctl_teardown(&adosfs_sysctl_log); 826 break; 827 default: 828 error = ENOTTY; 829 break; 830 } 831 832 return (error); 833} 834