filecore_vfsops.c revision 1.27.4.1
1 /* $NetBSD: filecore_vfsops.c,v 1.27.4.1 2006/11/18 21:39:18 ad Exp $ */ 2 3 /*- 4 * Copyright (c) 1994 The Regents of the University of California. 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 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * filecore_vfsops.c 1.1 1998/6/26 32 */ 33 34 /*- 35 * Copyright (c) 1998 Andrew McMurry 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 1. Redistributions of source code must retain the above copyright 41 * notice, this list of conditions and the following disclaimer. 42 * 2. Redistributions in binary form must reproduce the above copyright 43 * notice, this list of conditions and the following disclaimer in the 44 * documentation and/or other materials provided with the distribution. 45 * 3. All advertising materials mentioning features or use of this software 46 * must display the following acknowledgement: 47 * This product includes software developed by the University of 48 * California, Berkeley and its contributors. 49 * 4. Neither the name of the University nor the names of its contributors 50 * may be used to endorse or promote products derived from this software 51 * without specific prior written permission. 52 * 53 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 54 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 55 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 56 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 57 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 58 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 59 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 60 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 61 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 62 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 63 * SUCH DAMAGE. 64 * 65 * filecore_vfsops.c 1.1 1998/6/26 66 */ 67 68 #include <sys/cdefs.h> 69 __KERNEL_RCSID(0, "$NetBSD: filecore_vfsops.c,v 1.27.4.1 2006/11/18 21:39:18 ad Exp $"); 70 71 #if defined(_KERNEL_OPT) 72 #include "opt_compat_netbsd.h" 73 #endif 74 75 #include <sys/param.h> 76 #include <sys/systm.h> 77 #include <sys/namei.h> 78 #include <sys/proc.h> 79 #include <sys/vnode.h> 80 #include <miscfs/specfs/specdev.h> 81 #include <sys/mount.h> 82 #include <sys/buf.h> 83 #include <sys/file.h> 84 #include <sys/device.h> 85 #include <sys/errno.h> 86 #include <sys/malloc.h> 87 #include <sys/pool.h> 88 #include <sys/conf.h> 89 #include <sys/sysctl.h> 90 #include <sys/kauth.h> 91 92 #include <fs/filecorefs/filecore.h> 93 #include <fs/filecorefs/filecore_extern.h> 94 #include <fs/filecorefs/filecore_node.h> 95 #include <fs/filecorefs/filecore_mount.h> 96 97 MALLOC_DEFINE(M_FILECOREMNT, "filecore mount", "Filecore FS mount structures"); 98 99 extern const struct vnodeopv_desc filecore_vnodeop_opv_desc; 100 101 const struct vnodeopv_desc * const filecore_vnodeopv_descs[] = { 102 &filecore_vnodeop_opv_desc, 103 NULL, 104 }; 105 106 struct vfsops filecore_vfsops = { 107 MOUNT_FILECORE, 108 filecore_mount, 109 filecore_start, 110 filecore_unmount, 111 filecore_root, 112 filecore_quotactl, 113 filecore_statvfs, 114 filecore_sync, 115 filecore_vget, 116 filecore_fhtovp, 117 filecore_vptofh, 118 filecore_init, 119 filecore_reinit, 120 filecore_done, 121 NULL, /* filecore_mountroot */ 122 (int (*)(struct mount *, struct vnode *, struct timespec *)) eopnotsupp, 123 vfs_stdextattrctl, 124 filecore_vnodeopv_descs, 125 }; 126 VFS_ATTACH(filecore_vfsops); 127 128 static const struct genfs_ops filecore_genfsops = { 129 .gop_size = genfs_size, 130 }; 131 132 /* 133 * Called by vfs_mountroot when iso is going to be mounted as root. 134 * 135 * Name is updated by mount(8) after booting. 136 */ 137 138 static int filecore_mountfs __P((struct vnode *devvp, struct mount *mp, 139 struct lwp *l, struct filecore_args *argp)); 140 141 #if 0 142 int 143 filecore_mountroot() 144 { 145 struct mount *mp; 146 extern struct vnode *rootvp; 147 struct proc *p = curproc; /* XXX */ 148 int error; 149 struct filecore_args args; 150 151 if (device_class(root_device) != DV_DISK) 152 return (ENODEV); 153 154 /* 155 * Get vnodes for swapdev and rootdev. 156 */ 157 if (bdevvp(rootdev, &rootvp)) 158 panic("filecore_mountroot: can't setup rootvp"); 159 160 if ((error = vfs_rootmountalloc(MOUNT_FILECORE, "root_device", &mp)) != 0) 161 return (error); 162 163 args.flags = FILECOREMNT_ROOT; 164 if ((error = filecore_mountfs(rootvp, mp, p, &args)) != 0) { 165 mp->mnt_op->vfs_refcount--; 166 vfs_unbusy(mp); 167 free(mp, M_MOUNT); 168 return (error); 169 } 170 simple_lock(&mountlist_slock); 171 CIRCLEQ_INSERT_TAIL(&mountlist, mp, mnt_list); 172 simple_unlock(&mountlist_slock); 173 (void)filecore_statvfs(mp, &mp->mnt_stat, p); 174 vfs_unbusy(mp); 175 return (0); 176 } 177 #endif 178 179 /* 180 * VFS Operations. 181 * 182 * mount system call 183 */ 184 int 185 filecore_mount(mp, path, data, ndp, l) 186 struct mount *mp; 187 const char *path; 188 void *data; 189 struct nameidata *ndp; 190 struct lwp *l; 191 { 192 struct vnode *devvp; 193 struct filecore_args args; 194 int error; 195 struct filecore_mnt *fcmp = NULL; 196 197 if (mp->mnt_flag & MNT_GETARGS) { 198 fcmp = VFSTOFILECORE(mp); 199 if (fcmp == NULL) 200 return EIO; 201 args.flags = fcmp->fc_mntflags; 202 args.uid = fcmp->fc_uid; 203 args.gid = fcmp->fc_gid; 204 args.fspec = NULL; 205 return copyout(&args, data, sizeof(args)); 206 } 207 error = copyin(data, &args, sizeof (struct filecore_args)); 208 if (error) 209 return (error); 210 211 if ((mp->mnt_flag & MNT_RDONLY) == 0) 212 return (EROFS); 213 214 if ((mp->mnt_flag & MNT_UPDATE) && args.fspec == NULL) 215 return EINVAL; 216 217 /* 218 * Not an update, or updating the name: look up the name 219 * and verify that it refers to a sensible block device. 220 */ 221 NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args.fspec, l); 222 if ((error = namei(ndp)) != 0) 223 return (error); 224 devvp = ndp->ni_vp; 225 226 if (devvp->v_type != VBLK) { 227 vrele(devvp); 228 return ENOTBLK; 229 } 230 if (bdevsw_lookup(devvp->v_rdev) == NULL) { 231 vrele(devvp); 232 return ENXIO; 233 } 234 /* 235 * If mount by non-root, then verify that user has necessary 236 * permissions on the device. 237 */ 238 if (kauth_cred_geteuid(l->l_cred) != 0) { 239 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 240 error = VOP_ACCESS(devvp, VREAD, l->l_cred, l); 241 VOP_UNLOCK(devvp, 0); 242 if (error) { 243 vrele(devvp); 244 return (error); 245 } 246 } 247 if ((mp->mnt_flag & MNT_UPDATE) == 0) 248 error = filecore_mountfs(devvp, mp, l, &args); 249 else { 250 if (devvp != fcmp->fc_devvp) 251 error = EINVAL; /* needs translation */ 252 else 253 vrele(devvp); 254 } 255 if (error) { 256 vrele(devvp); 257 return error; 258 } 259 fcmp = VFSTOFILECORE(mp); 260 return set_statvfs_info(path, UIO_USERSPACE, args.fspec, UIO_USERSPACE, 261 mp, l); 262 } 263 264 /* 265 * Common code for mount and mountroot 266 */ 267 static int 268 filecore_mountfs(devvp, mp, l, argp) 269 struct vnode *devvp; 270 struct mount *mp; 271 struct lwp *l; 272 struct filecore_args *argp; 273 { 274 struct filecore_mnt *fcmp = (struct filecore_mnt *)0; 275 struct buf *bp = NULL; 276 dev_t dev = devvp->v_rdev; 277 int error = EINVAL; 278 int ronly = (mp->mnt_flag & MNT_RDONLY) != 0; 279 extern struct vnode *rootvp; 280 struct filecore_disc_record *fcdr; 281 unsigned map; 282 unsigned log2secsize; 283 284 if (!ronly) 285 return EROFS; 286 287 /* 288 * Disallow multiple mounts of the same device. 289 * Disallow mounting of a device that is currently in use 290 * (except for root, which might share swap device for miniroot). 291 * Flush out any old buffers remaining from a previous use. 292 */ 293 if ((error = vfs_mountedon(devvp)) != 0) 294 return error; 295 if (vcount(devvp) > 1 && devvp != rootvp) 296 return EBUSY; 297 if ((error = vinvalbuf(devvp, V_SAVE, l->l_cred, l, 0, 0)) 298 != 0) 299 return (error); 300 301 error = VOP_OPEN(devvp, ronly ? FREAD : FREAD|FWRITE, FSCRED, l); 302 if (error) 303 return error; 304 305 /* Read the filecore boot block to check FS validity and to find the map */ 306 error = bread(devvp, FILECORE_BOOTBLOCK_BLKN, 307 FILECORE_BOOTBLOCK_SIZE, NOCRED, &bp); 308 #ifdef FILECORE_DEBUG_BR 309 printf("bread(%p, %x, %d, CRED, %p)=%d\n", devvp, 310 FILECORE_BOOTBLOCK_BLKN, FILECORE_BOOTBLOCK_SIZE, 311 bp, error); 312 #endif 313 if (error != 0) 314 goto out; 315 316 KASSERT(bp != NULL); 317 if (filecore_bbchecksum(bp->b_data) != 0) { 318 error = EINVAL; 319 goto out; 320 } 321 fcdr = (struct filecore_disc_record *)(bp->b_data+FILECORE_BB_DISCREC); 322 map = ((((8 << fcdr->log2secsize) - fcdr->zone_spare) 323 * (fcdr->nzones / 2) - 8 * FILECORE_DISCREC_SIZE) 324 << fcdr->log2bpmb) >> fcdr->log2secsize; 325 log2secsize = fcdr->log2secsize; 326 bp->b_flags |= B_AGE; 327 #ifdef FILECORE_DEBUG_BR 328 printf("brelse(%p) vf1\n", bp); 329 #endif 330 brelse(bp); 331 bp = NULL; 332 333 /* Read the bootblock in the map */ 334 error = bread(devvp, map, 1 << log2secsize, NOCRED, &bp); 335 #ifdef FILECORE_DEBUG_BR 336 printf("bread(%p, %x, %d, CRED, %p)=%d\n", devvp, 337 map, 1 << log2secsize, bp, error); 338 #endif 339 if (error != 0) 340 goto out; 341 fcdr = (struct filecore_disc_record *)(bp->b_data + 4); 342 fcmp = malloc(sizeof *fcmp, M_FILECOREMNT, M_WAITOK); 343 memset(fcmp, 0, sizeof *fcmp); 344 if (fcdr->log2bpmb > fcdr->log2secsize) 345 fcmp->log2bsize = fcdr->log2bpmb; 346 else fcmp->log2bsize = fcdr->log2secsize; 347 fcmp->blksize = 1 << fcmp->log2bsize; 348 memcpy(&fcmp->drec, fcdr, sizeof(*fcdr)); 349 fcmp->map = map; 350 fcmp->idspz = ((8 << fcdr->log2secsize) - fcdr->zone_spare) 351 / (fcdr->idlen + 1); 352 fcmp->mask = (1 << fcdr->idlen) - 1; 353 if (fcdr->big_flag & 1) { 354 fcmp->nblks = ((((u_int64_t)fcdr->disc_size_2) << 32) 355 + fcdr->disc_size) / fcmp->blksize; 356 } else { 357 fcmp->nblks=fcdr->disc_size / fcmp->blksize; 358 } 359 360 bp->b_flags |= B_AGE; 361 #ifdef FILECORE_DEBUG_BR 362 printf("brelse(%p) vf2\n", bp); 363 #endif 364 brelse(bp); 365 bp = NULL; 366 367 mp->mnt_data = fcmp; 368 mp->mnt_stat.f_fsidx.__fsid_val[0] = (long)dev; 369 mp->mnt_stat.f_fsidx.__fsid_val[1] = makefstype(MOUNT_FILECORE); 370 mp->mnt_stat.f_fsid = mp->mnt_stat.f_fsidx.__fsid_val[0]; 371 mp->mnt_stat.f_namemax = 10; 372 mp->mnt_flag |= MNT_LOCAL; 373 mp->mnt_dev_bshift = fcdr->log2secsize; 374 mp->mnt_fs_bshift = fcmp->log2bsize; 375 376 fcmp->fc_mountp = mp; 377 fcmp->fc_dev = dev; 378 fcmp->fc_devvp = devvp; 379 fcmp->fc_mntflags = argp->flags; 380 if (argp->flags & FILECOREMNT_USEUID) { 381 fcmp->fc_uid = kauth_cred_getuid(l->l_cred); 382 fcmp->fc_gid = kauth_cred_getgid(l->l_cred); 383 } else { 384 fcmp->fc_uid = argp->uid; 385 fcmp->fc_gid = argp->gid; 386 } 387 388 return 0; 389 out: 390 if (bp) { 391 #ifdef FILECORE_DEBUG_BR 392 printf("brelse(%p) vf3\n", bp); 393 #endif 394 brelse(bp); 395 } 396 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 397 (void)VOP_CLOSE(devvp, ronly ? FREAD : FREAD|FWRITE, NOCRED, l); 398 VOP_UNLOCK(devvp, 0); 399 if (fcmp) { 400 free(fcmp, M_FILECOREMNT); 401 mp->mnt_data = NULL; 402 } 403 return error; 404 } 405 406 /* 407 * Make a filesystem operational. 408 * Nothing to do at the moment. 409 */ 410 /* ARGSUSED */ 411 int 412 filecore_start(mp, flags, l) 413 struct mount *mp; 414 int flags; 415 struct lwp *l; 416 { 417 return 0; 418 } 419 420 /* 421 * unmount system call 422 */ 423 int 424 filecore_unmount(mp, mntflags, l) 425 struct mount *mp; 426 int mntflags; 427 struct lwp *l; 428 { 429 struct filecore_mnt *fcmp; 430 int error, flags = 0; 431 432 if (mntflags & MNT_FORCE) 433 flags |= FORCECLOSE; 434 #if 0 435 mntflushbuf(mp, 0); 436 if (mntinvalbuf(mp)) 437 return EBUSY; 438 #endif 439 if ((error = vflush(mp, NULLVP, flags)) != 0) 440 return (error); 441 442 fcmp = VFSTOFILECORE(mp); 443 444 if (fcmp->fc_devvp->v_type != VBAD) 445 fcmp->fc_devvp->v_specmountpoint = NULL; 446 vn_lock(fcmp->fc_devvp, LK_EXCLUSIVE | LK_RETRY); 447 error = VOP_CLOSE(fcmp->fc_devvp, FREAD, NOCRED, l); 448 vput(fcmp->fc_devvp); 449 free(fcmp, M_FILECOREMNT); 450 mp->mnt_data = NULL; 451 mp->mnt_flag &= ~MNT_LOCAL; 452 return (error); 453 } 454 455 /* 456 * Return root of a filesystem 457 */ 458 int 459 filecore_root(mp, vpp) 460 struct mount *mp; 461 struct vnode **vpp; 462 { 463 struct vnode *nvp; 464 int error; 465 466 if ((error = VFS_VGET(mp, FILECORE_ROOTINO, &nvp)) != 0) 467 return (error); 468 *vpp = nvp; 469 return (0); 470 } 471 472 /* 473 * Do operations associated with quotas, not supported 474 */ 475 /* ARGSUSED */ 476 int 477 filecore_quotactl(mp, cmd, uid, arg, l) 478 struct mount *mp; 479 int cmd; 480 uid_t uid; 481 void *arg; 482 struct lwp *l; 483 { 484 485 return (EOPNOTSUPP); 486 } 487 488 /* 489 * Get file system statistics. 490 */ 491 int 492 filecore_statvfs(mp, sbp, l) 493 struct mount *mp; 494 struct statvfs *sbp; 495 struct lwp *l; 496 { 497 struct filecore_mnt *fcmp = VFSTOFILECORE(mp); 498 499 sbp->f_bsize = fcmp->blksize; 500 sbp->f_frsize = sbp->f_bsize; /* XXX */ 501 sbp->f_iosize = sbp->f_bsize; /* XXX */ 502 sbp->f_blocks = fcmp->nblks; 503 sbp->f_bfree = 0; /* total free blocks */ 504 sbp->f_bavail = 0; /* blocks free for non superuser */ 505 sbp->f_bresvd = 0; /* reserved blocks */ 506 sbp->f_files = 0; /* total files */ 507 sbp->f_ffree = 0; /* free file nodes for non superuser */ 508 sbp->f_favail = 0; /* free file nodes */ 509 sbp->f_fresvd = 0; /* reserved file nodes */ 510 copy_statvfs_info(sbp, mp); 511 return 0; 512 } 513 514 /* ARGSUSED */ 515 int 516 filecore_sync(mp, waitfor, cred, l) 517 struct mount *mp; 518 int waitfor; 519 kauth_cred_t cred; 520 struct lwp *l; 521 { 522 return (0); 523 } 524 525 /* 526 * File handle to vnode 527 * 528 * Have to be really careful about stale file handles: 529 * - check that the inode number is in range 530 * - call iget() to get the locked inode 531 * - check for an unallocated inode (i_mode == 0) 532 * - check that the generation number matches 533 */ 534 535 struct ifid { 536 ushort ifid_len; 537 ushort ifid_pad; 538 u_int32_t ifid_ino; 539 }; 540 541 /* ARGSUSED */ 542 int 543 filecore_fhtovp(mp, fhp, vpp) 544 struct mount *mp; 545 struct fid *fhp; 546 struct vnode **vpp; 547 { 548 struct ifid ifh; 549 struct vnode *nvp; 550 struct filecore_node *ip; 551 int error; 552 553 if (fhp->fid_len != sizeof(struct ifid)) 554 return EINVAL; 555 556 memcpy(&ifh, fhp, sizeof(ifh)); 557 if ((error = VFS_VGET(mp, ifh.ifid_ino, &nvp)) != 0) { 558 *vpp = NULLVP; 559 return (error); 560 } 561 ip = VTOI(nvp); 562 if (filecore_staleinode(ip)) { 563 vput(nvp); 564 *vpp = NULLVP; 565 return (ESTALE); 566 } 567 *vpp = nvp; 568 return (0); 569 } 570 571 /* This looks complicated. Look at other vgets as well as the iso9660 one. 572 * 573 * The filecore inode number is made up of 1 byte directory entry index and 574 * 3 bytes of the internal disc address of the directory. On a read-only 575 * filesystem this is unique. For a read-write version we may not be able to 576 * do vget, see msdosfs. 577 */ 578 579 int 580 filecore_vget(mp, ino, vpp) 581 struct mount *mp; 582 ino_t ino; 583 struct vnode **vpp; 584 { 585 struct filecore_mnt *fcmp; 586 struct filecore_node *ip; 587 struct buf *bp; 588 struct vnode *vp; 589 dev_t dev; 590 int error; 591 592 fcmp = VFSTOFILECORE(mp); 593 dev = fcmp->fc_dev; 594 if ((*vpp = filecore_ihashget(dev, ino)) != NULLVP) 595 return (0); 596 597 /* Allocate a new vnode/filecore_node. */ 598 if ((error = getnewvnode(VT_FILECORE, mp, filecore_vnodeop_p, &vp)) 599 != 0) { 600 *vpp = NULLVP; 601 return (error); 602 } 603 ip = pool_get(&filecore_node_pool, PR_WAITOK); 604 memset(ip, 0, sizeof(struct filecore_node)); 605 vp->v_data = ip; 606 ip->i_vnode = vp; 607 ip->i_dev = dev; 608 ip->i_number = ino; 609 ip->i_block = -1; 610 ip->i_parent = -2; 611 612 /* 613 * Put it onto its hash chain and lock it so that other requests for 614 * this inode will block if they arrive while we are sleeping waiting 615 * for old data structures to be purged or for the contents of the 616 * disk portion of this inode to be read. 617 */ 618 filecore_ihashins(ip); 619 620 if (ino == FILECORE_ROOTINO) { 621 /* Here we need to construct a root directory inode */ 622 memcpy(ip->i_dirent.name, "root", 4); 623 ip->i_dirent.load = 0; 624 ip->i_dirent.exec = 0; 625 ip->i_dirent.len = FILECORE_DIR_SIZE; 626 ip->i_dirent.addr = fcmp->drec.root; 627 ip->i_dirent.attr = FILECORE_ATTR_DIR | FILECORE_ATTR_READ; 628 629 } else { 630 /* Read in Data from Directory Entry */ 631 if ((error = filecore_bread(fcmp, ino & FILECORE_INO_MASK, 632 FILECORE_DIR_SIZE, NOCRED, &bp)) != 0) { 633 vput(vp); 634 #ifdef FILECORE_DEBUG_BR 635 printf("brelse(%p) vf4\n", bp); 636 #endif 637 brelse(bp); 638 *vpp = NULL; 639 return (error); 640 } 641 642 memcpy(&ip->i_dirent, 643 fcdirentry(bp->b_data, ino >> FILECORE_INO_INDEX), 644 sizeof(struct filecore_direntry)); 645 #ifdef FILECORE_DEBUG_BR 646 printf("brelse(%p) vf5\n", bp); 647 #endif 648 brelse(bp); 649 } 650 651 ip->i_mnt = fcmp; 652 ip->i_devvp = fcmp->fc_devvp; 653 ip->i_diroff = 0; 654 VREF(ip->i_devvp); 655 656 /* 657 * Setup type 658 */ 659 vp->v_type = VREG; 660 if (ip->i_dirent.attr & FILECORE_ATTR_DIR) 661 vp->v_type = VDIR; 662 663 /* 664 * Initialize the associated vnode 665 */ 666 switch (vp->v_type) { 667 case VFIFO: 668 case VCHR: 669 case VBLK: 670 /* 671 * Devices not supported. 672 */ 673 vput(vp); 674 return (EOPNOTSUPP); 675 case VLNK: 676 case VNON: 677 case VSOCK: 678 case VDIR: 679 case VBAD: 680 case VREG: 681 break; 682 } 683 684 if (ino == FILECORE_ROOTINO) 685 vp->v_flag |= VROOT; 686 687 /* 688 * XXX need generation number? 689 */ 690 691 genfs_node_init(vp, &filecore_genfsops); 692 vp->v_size = ip->i_size; 693 *vpp = vp; 694 return (0); 695 } 696 697 /* 698 * Vnode pointer to File handle 699 */ 700 /* ARGSUSED */ 701 int 702 filecore_vptofh(vp, fhp, fh_size) 703 struct vnode *vp; 704 struct fid *fhp; 705 size_t *fh_size; 706 { 707 struct filecore_node *ip = VTOI(vp); 708 struct ifid ifh; 709 710 if (*fh_size < sizeof(struct ifid)) { 711 *fh_size = sizeof(struct ifid); 712 return E2BIG; 713 } 714 memset(&ifh, 0, sizeof(ifh)); 715 ifh.ifid_len = sizeof(struct ifid); 716 ifh.ifid_ino = ip->i_number; 717 memcpy(fhp, &ifh, sizeof(ifh)); 718 return 0; 719 } 720 721 SYSCTL_SETUP(sysctl_vfs_filecore_setup, "sysctl vfs.filecore subtree setup") 722 { 723 724 sysctl_createv(clog, 0, NULL, NULL, 725 CTLFLAG_PERMANENT, 726 CTLTYPE_NODE, "vfs", NULL, 727 NULL, 0, NULL, 0, 728 CTL_VFS, CTL_EOL); 729 sysctl_createv(clog, 0, NULL, NULL, 730 CTLFLAG_PERMANENT, 731 CTLTYPE_NODE, "filecore", 732 SYSCTL_DESCR("Acorn FILECORE file system"), 733 NULL, 0, NULL, 0, 734 CTL_VFS, 19, CTL_EOL); 735 /* 736 * XXX the "19" above could be dynamic, thereby eliminating 737 * one more instance of the "number to vfs" mapping problem, 738 * but "19" is the order as taken from sys/mount.h 739 */ 740 } 741
Indexes created Wed Oct 01 12:09:54 GMT 2025