filecore_vfsops.c revision 1.32.2.6
1 /* $NetBSD: filecore_vfsops.c,v 1.32.2.6 2007/08/24 23:28:38 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 1.32.2.6 2007/08/24 23:28:38 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_JUSTDEFINE(M_FILECOREMNT, 98 "filecore mount", "Filecore FS mount structures"); 99 100 extern const struct vnodeopv_desc filecore_vnodeop_opv_desc; 101 102 const struct vnodeopv_desc * const filecore_vnodeopv_descs[] = { 103 &filecore_vnodeop_opv_desc, 104 NULL, 105 }; 106 107 struct vfsops filecore_vfsops = { 108 MOUNT_FILECORE, 109 sizeof (struct filecore_args), 110 filecore_mount, 111 filecore_start, 112 filecore_unmount, 113 filecore_root, 114 filecore_quotactl, 115 filecore_statvfs, 116 filecore_sync, 117 filecore_vget, 118 filecore_fhtovp, 119 filecore_vptofh, 120 filecore_init, 121 filecore_reinit, 122 filecore_done, 123 NULL, /* filecore_mountroot */ 124 (int (*)(struct mount *, struct vnode *, struct timespec *)) eopnotsupp, 125 vfs_stdextattrctl, 126 (void *)eopnotsupp, /* vfs_suspendctl */ 127 filecore_vnodeopv_descs, 128 0, 129 { NULL, NULL } 130 }; 131 VFS_ATTACH(filecore_vfsops); 132 133 static const struct genfs_ops filecore_genfsops = { 134 .gop_size = genfs_size, 135 }; 136 137 /* 138 * Called by vfs_mountroot when iso is going to be mounted as root. 139 * 140 * Name is updated by mount(8) after booting. 141 */ 142 143 static int filecore_mountfs __P((struct vnode *devvp, struct mount *mp, 144 struct lwp *l, struct filecore_args *argp)); 145 146 #if 0 147 int 148 filecore_mountroot() 149 { 150 struct mount *mp; 151 extern struct vnode *rootvp; 152 struct proc *p = curproc; /* XXX */ 153 int error; 154 struct filecore_args args; 155 156 if (device_class(root_device) != DV_DISK) 157 return (ENODEV); 158 159 /* 160 * Get vnodes for swapdev and rootdev. 161 */ 162 if (bdevvp(rootdev, &rootvp)) 163 panic("filecore_mountroot: can't setup rootvp"); 164 165 if ((error = vfs_rootmountalloc(MOUNT_FILECORE, "root_device", &mp)) != 0) 166 return (error); 167 168 args.flags = FILECOREMNT_ROOT; 169 if ((error = filecore_mountfs(rootvp, mp, p, &args)) != 0) { 170 mp->mnt_op->vfs_refcount--; 171 vfs_unbusy(mp); 172 vfs_destroy(mp); 173 return (error); 174 } 175 simple_lock(&mountlist_slock); 176 CIRCLEQ_INSERT_TAIL(&mountlist, mp, mnt_list); 177 simple_unlock(&mountlist_slock); 178 (void)filecore_statvfs(mp, &mp->mnt_stat, p); 179 vfs_unbusy(mp); 180 return (0); 181 } 182 #endif 183 184 /* 185 * VFS Operations. 186 * 187 * mount system call 188 */ 189 int 190 filecore_mount(mp, path, data, data_len, l) 191 struct mount *mp; 192 const char *path; 193 void *data; 194 size_t *data_len; 195 struct lwp *l; 196 { 197 struct nameidata nd; 198 struct vnode *devvp; 199 struct filecore_args *args = data; 200 int error; 201 struct filecore_mnt *fcmp = NULL; 202 203 if (*data_len < sizeof *args) 204 return EINVAL; 205 206 if (mp->mnt_flag & MNT_GETARGS) { 207 fcmp = VFSTOFILECORE(mp); 208 if (fcmp == NULL) 209 return EIO; 210 args->flags = fcmp->fc_mntflags; 211 args->uid = fcmp->fc_uid; 212 args->gid = fcmp->fc_gid; 213 args->fspec = NULL; 214 *data_len = sizeof *args; 215 return 0; 216 } 217 218 if ((mp->mnt_flag & MNT_RDONLY) == 0) 219 return (EROFS); 220 221 if ((mp->mnt_flag & MNT_UPDATE) && args->fspec == NULL) 222 return EINVAL; 223 224 /* 225 * Not an update, or updating the name: look up the name 226 * and verify that it refers to a sensible block device. 227 */ 228 NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, args->fspec, l); 229 if ((error = namei(&nd)) != 0) 230 return (error); 231 devvp = nd.ni_vp; 232 233 if (devvp->v_type != VBLK) { 234 vrele(devvp); 235 return ENOTBLK; 236 } 237 if (bdevsw_lookup(devvp->v_rdev) == NULL) { 238 vrele(devvp); 239 return ENXIO; 240 } 241 /* 242 * If mount by non-root, then verify that user has necessary 243 * permissions on the device. 244 */ 245 if (kauth_authorize_generic(l->l_cred, KAUTH_GENERIC_ISSUSER, NULL)) { 246 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 247 error = VOP_ACCESS(devvp, VREAD, l->l_cred, l); 248 VOP_UNLOCK(devvp, 0); 249 if (error) { 250 vrele(devvp); 251 return (error); 252 } 253 } 254 if ((mp->mnt_flag & MNT_UPDATE) == 0) 255 error = filecore_mountfs(devvp, mp, l, args); 256 else { 257 if (devvp != fcmp->fc_devvp) 258 error = EINVAL; /* needs translation */ 259 else 260 vrele(devvp); 261 } 262 if (error) { 263 vrele(devvp); 264 return error; 265 } 266 fcmp = VFSTOFILECORE(mp); 267 return set_statvfs_info(path, UIO_USERSPACE, args->fspec, UIO_USERSPACE, 268 mp->mnt_op->vfs_name, mp, l); 269 } 270 271 /* 272 * Common code for mount and mountroot 273 */ 274 static int 275 filecore_mountfs(devvp, mp, l, argp) 276 struct vnode *devvp; 277 struct mount *mp; 278 struct lwp *l; 279 struct filecore_args *argp; 280 { 281 struct filecore_mnt *fcmp = (struct filecore_mnt *)0; 282 struct buf *bp = NULL; 283 dev_t dev = devvp->v_rdev; 284 int error = EINVAL; 285 int ronly = (mp->mnt_flag & MNT_RDONLY) != 0; 286 extern struct vnode *rootvp; 287 struct filecore_disc_record *fcdr; 288 unsigned map; 289 unsigned log2secsize; 290 291 if (!ronly) 292 return EROFS; 293 294 /* 295 * Disallow multiple mounts of the same device. 296 * Disallow mounting of a device that is currently in use 297 * (except for root, which might share swap device for miniroot). 298 * Flush out any old buffers remaining from a previous use. 299 */ 300 if ((error = vfs_mountedon(devvp)) != 0) 301 return error; 302 if (vcount(devvp) > 1 && devvp != rootvp) 303 return EBUSY; 304 if ((error = vinvalbuf(devvp, V_SAVE, l->l_cred, l, 0, 0)) 305 != 0) 306 return (error); 307 308 error = VOP_OPEN(devvp, ronly ? FREAD : FREAD|FWRITE, FSCRED, l); 309 if (error) 310 return error; 311 312 /* Read the filecore boot block to check FS validity and to find the map */ 313 error = bread(devvp, FILECORE_BOOTBLOCK_BLKN, 314 FILECORE_BOOTBLOCK_SIZE, NOCRED, &bp); 315 #ifdef FILECORE_DEBUG_BR 316 printf("bread(%p, %x, %d, CRED, %p)=%d\n", devvp, 317 FILECORE_BOOTBLOCK_BLKN, FILECORE_BOOTBLOCK_SIZE, 318 bp, error); 319 #endif 320 if (error != 0) 321 goto out; 322 323 KASSERT(bp != NULL); 324 if (filecore_bbchecksum(bp->b_data) != 0) { 325 error = EINVAL; 326 goto out; 327 } 328 fcdr = (struct filecore_disc_record *)((char *)(bp->b_data) + 329 FILECORE_BB_DISCREC); 330 map = ((((8 << fcdr->log2secsize) - fcdr->zone_spare) 331 * (fcdr->nzones / 2) - 8 * FILECORE_DISCREC_SIZE) 332 << fcdr->log2bpmb) >> fcdr->log2secsize; 333 log2secsize = fcdr->log2secsize; 334 #ifdef FILECORE_DEBUG_BR 335 printf("brelse(%p) vf1\n", bp); 336 #endif 337 brelse(bp, BC_AGE); 338 bp = NULL; 339 340 /* Read the bootblock in the map */ 341 error = bread(devvp, map, 1 << log2secsize, NOCRED, &bp); 342 #ifdef FILECORE_DEBUG_BR 343 printf("bread(%p, %x, %d, CRED, %p)=%d\n", devvp, 344 map, 1 << log2secsize, bp, error); 345 #endif 346 if (error != 0) 347 goto out; 348 fcdr = (struct filecore_disc_record *)((char *)(bp->b_data) + 4); 349 fcmp = malloc(sizeof *fcmp, M_FILECOREMNT, M_WAITOK); 350 memset(fcmp, 0, sizeof *fcmp); 351 if (fcdr->log2bpmb > fcdr->log2secsize) 352 fcmp->log2bsize = fcdr->log2bpmb; 353 else fcmp->log2bsize = fcdr->log2secsize; 354 fcmp->blksize = 1 << fcmp->log2bsize; 355 memcpy(&fcmp->drec, fcdr, sizeof(*fcdr)); 356 fcmp->map = map; 357 fcmp->idspz = ((8 << fcdr->log2secsize) - fcdr->zone_spare) 358 / (fcdr->idlen + 1); 359 fcmp->mask = (1 << fcdr->idlen) - 1; 360 if (fcdr->big_flag & 1) { 361 fcmp->nblks = ((((u_int64_t)fcdr->disc_size_2) << 32) 362 + fcdr->disc_size) / fcmp->blksize; 363 } else { 364 fcmp->nblks=fcdr->disc_size / fcmp->blksize; 365 } 366 367 #ifdef FILECORE_DEBUG_BR 368 printf("brelse(%p) vf2\n", bp); 369 #endif 370 brelse(bp, BC_AGE); 371 bp = NULL; 372 373 mp->mnt_data = fcmp; 374 mp->mnt_stat.f_fsidx.__fsid_val[0] = (long)dev; 375 mp->mnt_stat.f_fsidx.__fsid_val[1] = makefstype(MOUNT_FILECORE); 376 mp->mnt_stat.f_fsid = mp->mnt_stat.f_fsidx.__fsid_val[0]; 377 mp->mnt_stat.f_namemax = 10; 378 mp->mnt_flag |= MNT_LOCAL; 379 mp->mnt_dev_bshift = fcdr->log2secsize; 380 mp->mnt_fs_bshift = fcmp->log2bsize; 381 382 fcmp->fc_mountp = mp; 383 fcmp->fc_dev = dev; 384 fcmp->fc_devvp = devvp; 385 fcmp->fc_mntflags = argp->flags; 386 if (argp->flags & FILECOREMNT_USEUID) { 387 fcmp->fc_uid = kauth_cred_getuid(l->l_cred); 388 fcmp->fc_gid = kauth_cred_getgid(l->l_cred); 389 } else { 390 fcmp->fc_uid = argp->uid; 391 fcmp->fc_gid = argp->gid; 392 } 393 394 return 0; 395 out: 396 if (bp) { 397 #ifdef FILECORE_DEBUG_BR 398 printf("brelse(%p) vf3\n", bp); 399 #endif 400 brelse(bp, 0); 401 } 402 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 403 (void)VOP_CLOSE(devvp, ronly ? FREAD : FREAD|FWRITE, NOCRED, l); 404 VOP_UNLOCK(devvp, 0); 405 return error; 406 } 407 408 /* 409 * Make a filesystem operational. 410 * Nothing to do at the moment. 411 */ 412 /* ARGSUSED */ 413 int 414 filecore_start(mp, flags, l) 415 struct mount *mp; 416 int flags; 417 struct lwp *l; 418 { 419 return 0; 420 } 421 422 /* 423 * unmount system call 424 */ 425 int 426 filecore_unmount(mp, mntflags, l) 427 struct mount *mp; 428 int mntflags; 429 struct lwp *l; 430 { 431 struct filecore_mnt *fcmp; 432 int error, flags = 0; 433 434 if (mntflags & MNT_FORCE) 435 flags |= FORCECLOSE; 436 if ((error = vflush(mp, NULLVP, flags)) != 0) 437 return (error); 438 439 fcmp = VFSTOFILECORE(mp); 440 441 if (fcmp->fc_devvp->v_type != VBAD) 442 fcmp->fc_devvp->v_specmountpoint = NULL; 443 vn_lock(fcmp->fc_devvp, LK_EXCLUSIVE | LK_RETRY); 444 error = VOP_CLOSE(fcmp->fc_devvp, FREAD, NOCRED, l); 445 vput(fcmp->fc_devvp); 446 free(fcmp, M_FILECOREMNT); 447 mp->mnt_data = NULL; 448 mp->mnt_flag &= ~MNT_LOCAL; 449 return (error); 450 } 451 452 /* 453 * Return root of a filesystem 454 */ 455 int 456 filecore_root(mp, vpp) 457 struct mount *mp; 458 struct vnode **vpp; 459 { 460 struct vnode *nvp; 461 int error; 462 463 if ((error = VFS_VGET(mp, FILECORE_ROOTINO, &nvp)) != 0) 464 return (error); 465 *vpp = nvp; 466 return (0); 467 } 468 469 /* 470 * Do operations associated with quotas, not supported 471 */ 472 /* ARGSUSED */ 473 int 474 filecore_quotactl(mp, cmd, uid, arg, l) 475 struct mount *mp; 476 int cmd; 477 uid_t uid; 478 void *arg; 479 struct lwp *l; 480 { 481 482 return (EOPNOTSUPP); 483 } 484 485 /* 486 * Get file system statistics. 487 */ 488 int 489 filecore_statvfs(mp, sbp, l) 490 struct mount *mp; 491 struct statvfs *sbp; 492 struct lwp *l; 493 { 494 struct filecore_mnt *fcmp = VFSTOFILECORE(mp); 495 496 sbp->f_bsize = fcmp->blksize; 497 sbp->f_frsize = sbp->f_bsize; /* XXX */ 498 sbp->f_iosize = sbp->f_bsize; /* XXX */ 499 sbp->f_blocks = fcmp->nblks; 500 sbp->f_bfree = 0; /* total free blocks */ 501 sbp->f_bavail = 0; /* blocks free for non superuser */ 502 sbp->f_bresvd = 0; /* reserved blocks */ 503 sbp->f_files = 0; /* total files */ 504 sbp->f_ffree = 0; /* free file nodes for non superuser */ 505 sbp->f_favail = 0; /* free file nodes */ 506 sbp->f_fresvd = 0; /* reserved file nodes */ 507 copy_statvfs_info(sbp, mp); 508 return 0; 509 } 510 511 /* ARGSUSED */ 512 int 513 filecore_sync(mp, waitfor, cred, l) 514 struct mount *mp; 515 int waitfor; 516 kauth_cred_t cred; 517 struct lwp *l; 518 { 519 return (0); 520 } 521 522 /* 523 * File handle to vnode 524 * 525 * Have to be really careful about stale file handles: 526 * - check that the inode number is in range 527 * - call iget() to get the locked inode 528 * - check for an unallocated inode (i_mode == 0) 529 * - check that the generation number matches 530 */ 531 532 struct ifid { 533 ushort ifid_len; 534 ushort ifid_pad; 535 u_int32_t ifid_ino; 536 }; 537 538 /* ARGSUSED */ 539 int 540 filecore_fhtovp(mp, fhp, vpp) 541 struct mount *mp; 542 struct fid *fhp; 543 struct vnode **vpp; 544 { 545 struct ifid ifh; 546 struct vnode *nvp; 547 struct filecore_node *ip; 548 int error; 549 550 if (fhp->fid_len != sizeof(struct ifid)) 551 return EINVAL; 552 553 memcpy(&ifh, fhp, sizeof(ifh)); 554 if ((error = VFS_VGET(mp, ifh.ifid_ino, &nvp)) != 0) { 555 *vpp = NULLVP; 556 return (error); 557 } 558 ip = VTOI(nvp); 559 if (filecore_staleinode(ip)) { 560 vput(nvp); 561 *vpp = NULLVP; 562 return (ESTALE); 563 } 564 *vpp = nvp; 565 return (0); 566 } 567 568 /* This looks complicated. Look at other vgets as well as the iso9660 one. 569 * 570 * The filecore inode number is made up of 1 byte directory entry index and 571 * 3 bytes of the internal disc address of the directory. On a read-only 572 * filesystem this is unique. For a read-write version we may not be able to 573 * do vget, see msdosfs. 574 */ 575 576 int 577 filecore_vget(mp, ino, vpp) 578 struct mount *mp; 579 ino_t ino; 580 struct vnode **vpp; 581 { 582 struct filecore_mnt *fcmp; 583 struct filecore_node *ip; 584 struct buf *bp; 585 struct vnode *vp; 586 dev_t dev; 587 int error; 588 589 fcmp = VFSTOFILECORE(mp); 590 dev = fcmp->fc_dev; 591 if ((*vpp = filecore_ihashget(dev, ino)) != NULLVP) 592 return (0); 593 594 /* Allocate a new vnode/filecore_node. */ 595 if ((error = getnewvnode(VT_FILECORE, mp, filecore_vnodeop_p, &vp)) 596 != 0) { 597 *vpp = NULLVP; 598 return (error); 599 } 600 ip = pool_get(&filecore_node_pool, PR_WAITOK); 601 memset(ip, 0, sizeof(struct filecore_node)); 602 vp->v_data = ip; 603 ip->i_vnode = vp; 604 ip->i_dev = dev; 605 ip->i_number = ino; 606 ip->i_block = -1; 607 ip->i_parent = -2; 608 609 /* 610 * Put it onto its hash chain and lock it so that other requests for 611 * this inode will block if they arrive while we are sleeping waiting 612 * for old data structures to be purged or for the contents of the 613 * disk portion of this inode to be read. 614 */ 615 filecore_ihashins(ip); 616 617 if (ino == FILECORE_ROOTINO) { 618 /* Here we need to construct a root directory inode */ 619 memcpy(ip->i_dirent.name, "root", 4); 620 ip->i_dirent.load = 0; 621 ip->i_dirent.exec = 0; 622 ip->i_dirent.len = FILECORE_DIR_SIZE; 623 ip->i_dirent.addr = fcmp->drec.root; 624 ip->i_dirent.attr = FILECORE_ATTR_DIR | FILECORE_ATTR_READ; 625 626 } else { 627 /* Read in Data from Directory Entry */ 628 if ((error = filecore_bread(fcmp, ino & FILECORE_INO_MASK, 629 FILECORE_DIR_SIZE, NOCRED, &bp)) != 0) { 630 vput(vp); 631 #ifdef FILECORE_DEBUG_BR 632 printf("brelse(%p) vf4\n", bp); 633 #endif 634 brelse(bp, 0); 635 *vpp = NULL; 636 return (error); 637 } 638 639 memcpy(&ip->i_dirent, 640 fcdirentry(bp->b_data, ino >> FILECORE_INO_INDEX), 641 sizeof(struct filecore_direntry)); 642 #ifdef FILECORE_DEBUG_BR 643 printf("brelse(%p) vf5\n", bp); 644 #endif 645 brelse(bp, 0); 646 } 647 648 ip->i_mnt = fcmp; 649 ip->i_devvp = fcmp->fc_devvp; 650 ip->i_diroff = 0; 651 VREF(ip->i_devvp); 652 653 /* 654 * Setup type 655 */ 656 vp->v_type = VREG; 657 if (ip->i_dirent.attr & FILECORE_ATTR_DIR) 658 vp->v_type = VDIR; 659 660 /* 661 * Initialize the associated vnode 662 */ 663 switch (vp->v_type) { 664 case VFIFO: 665 case VCHR: 666 case VBLK: 667 /* 668 * Devices not supported. 669 */ 670 vput(vp); 671 return (EOPNOTSUPP); 672 case VLNK: 673 case VNON: 674 case VSOCK: 675 case VDIR: 676 case VBAD: 677 case VREG: 678 break; 679 } 680 681 if (ino == FILECORE_ROOTINO) 682 vp->v_vflag |= VV_ROOT; 683 684 /* 685 * XXX need generation number? 686 */ 687 688 genfs_node_init(vp, &filecore_genfsops); 689 uvm_vnp_setsize(vp, ip->i_size); 690 *vpp = vp; 691 return (0); 692 } 693 694 /* 695 * Vnode pointer to File handle 696 */ 697 /* ARGSUSED */ 698 int 699 filecore_vptofh(vp, fhp, fh_size) 700 struct vnode *vp; 701 struct fid *fhp; 702 size_t *fh_size; 703 { 704 struct filecore_node *ip = VTOI(vp); 705 struct ifid ifh; 706 707 if (*fh_size < sizeof(struct ifid)) { 708 *fh_size = sizeof(struct ifid); 709 return E2BIG; 710 } 711 memset(&ifh, 0, sizeof(ifh)); 712 ifh.ifid_len = sizeof(struct ifid); 713 ifh.ifid_ino = ip->i_number; 714 memcpy(fhp, &ifh, sizeof(ifh)); 715 return 0; 716 } 717 718 SYSCTL_SETUP(sysctl_vfs_filecore_setup, "sysctl vfs.filecore subtree setup") 719 { 720 721 sysctl_createv(clog, 0, NULL, NULL, 722 CTLFLAG_PERMANENT, 723 CTLTYPE_NODE, "vfs", NULL, 724 NULL, 0, NULL, 0, 725 CTL_VFS, CTL_EOL); 726 sysctl_createv(clog, 0, NULL, NULL, 727 CTLFLAG_PERMANENT, 728 CTLTYPE_NODE, "filecore", 729 SYSCTL_DESCR("Acorn FILECORE file system"), 730 NULL, 0, NULL, 0, 731 CTL_VFS, 19, CTL_EOL); 732 /* 733 * XXX the "19" above could be dynamic, thereby eliminating 734 * one more instance of the "number to vfs" mapping problem, 735 * but "19" is the order as taken from sys/mount.h 736 */ 737 } 738
Indexes created Wed Oct 01 12:09:54 GMT 2025