filecore_vfsops.c revision 1.6
1 /* $NetBSD: filecore_vfsops.c,v 1.6 2003/08/07 16:31:38 agc 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 1.6 2003/08/07 16:31:38 agc 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 90 #include <fs/filecorefs/filecore.h> 91 #include <fs/filecorefs/filecore_extern.h> 92 #include <fs/filecorefs/filecore_node.h> 93 #include <fs/filecorefs/filecore_mount.h> 94 95 MALLOC_DEFINE(M_FILECOREMNT, "filecore mount", "Filecore FS mount structures"); 96 97 extern const struct vnodeopv_desc filecore_vnodeop_opv_desc; 98 99 const struct vnodeopv_desc * const filecore_vnodeopv_descs[] = { 100 &filecore_vnodeop_opv_desc, 101 NULL, 102 }; 103 104 struct vfsops filecore_vfsops = { 105 MOUNT_FILECORE, 106 filecore_mount, 107 filecore_start, 108 filecore_unmount, 109 filecore_root, 110 filecore_quotactl, 111 filecore_statfs, 112 filecore_sync, 113 filecore_vget, 114 filecore_fhtovp, 115 filecore_vptofh, 116 filecore_init, 117 filecore_reinit, 118 filecore_done, 119 filecore_sysctl, 120 NULL, /* filecore_mountroot */ 121 filecore_checkexp, 122 filecore_vnodeopv_descs, 123 }; 124 125 struct genfs_ops filecore_genfsops = { 126 genfs_size, 127 }; 128 129 /* 130 * Called by vfs_mountroot when iso is going to be mounted as root. 131 * 132 * Name is updated by mount(8) after booting. 133 */ 134 135 static int filecore_mountfs __P((struct vnode *devvp, struct mount *mp, 136 struct proc *p, struct filecore_args *argp)); 137 138 #if 0 139 int 140 filecore_mountroot() 141 { 142 struct mount *mp; 143 extern struct vnode *rootvp; 144 struct proc *p = curproc; /* XXX */ 145 int error; 146 struct filecore_args args; 147 148 if (root_device->dv_class != DV_DISK) 149 return (ENODEV); 150 151 /* 152 * Get vnodes for swapdev and rootdev. 153 */ 154 if (bdevvp(rootdev, &rootvp)) 155 panic("filecore_mountroot: can't setup rootvp"); 156 157 if ((error = vfs_rootmountalloc(MOUNT_FILECORE, "root_device", &mp)) != 0) 158 return (error); 159 160 args.flags = FILECOREMNT_ROOT; 161 if ((error = filecore_mountfs(rootvp, mp, p, &args)) != 0) { 162 mp->mnt_op->vfs_refcount--; 163 vfs_unbusy(mp); 164 free(mp, M_MOUNT); 165 return (error); 166 } 167 simple_lock(&mountlist_slock); 168 CIRCLEQ_INSERT_TAIL(&mountlist, mp, mnt_list); 169 simple_unlock(&mountlist_slock); 170 (void)filecore_statfs(mp, &mp->mnt_stat, p); 171 vfs_unbusy(mp); 172 return (0); 173 } 174 #endif 175 176 /* 177 * VFS Operations. 178 * 179 * mount system call 180 */ 181 int 182 filecore_mount(mp, path, data, ndp, p) 183 struct mount *mp; 184 const char *path; 185 void *data; 186 struct nameidata *ndp; 187 struct proc *p; 188 { 189 struct vnode *devvp; 190 struct filecore_args args; 191 int error; 192 struct filecore_mnt *fcmp = NULL; 193 194 if (mp->mnt_flag & MNT_GETARGS) { 195 fcmp = VFSTOFILECORE(mp); 196 if (fcmp == NULL) 197 return EIO; 198 args.flags = fcmp->fc_mntflags; 199 args.uid = fcmp->fc_uid; 200 args.gid = fcmp->fc_gid; 201 args.fspec = NULL; 202 vfs_showexport(mp, &args.export, &fcmp->fc_export); 203 return copyout(&args, data, sizeof(args)); 204 } 205 error = copyin(data, (caddr_t)&args, sizeof (struct filecore_args)); 206 if (error) 207 return (error); 208 209 if ((mp->mnt_flag & MNT_RDONLY) == 0) 210 return (EROFS); 211 212 /* 213 * If updating, check whether changing from read-only to 214 * read/write; if there is no device name, that's all we do. 215 */ 216 if (mp->mnt_flag & MNT_UPDATE) { 217 fcmp = VFSTOFILECORE(mp); 218 if (args.fspec == 0) 219 return (vfs_export(mp, &fcmp->fc_export, &args.export)); 220 } 221 /* 222 * Not an update, or updating the name: look up the name 223 * and verify that it refers to a sensible block device. 224 */ 225 NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args.fspec, p); 226 if ((error = namei(ndp)) != 0) 227 return (error); 228 devvp = ndp->ni_vp; 229 230 if (devvp->v_type != VBLK) { 231 vrele(devvp); 232 return ENOTBLK; 233 } 234 if (bdevsw_lookup(devvp->v_rdev) == NULL) { 235 vrele(devvp); 236 return ENXIO; 237 } 238 /* 239 * If mount by non-root, then verify that user has necessary 240 * permissions on the device. 241 */ 242 if (p->p_ucred->cr_uid != 0) { 243 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 244 error = VOP_ACCESS(devvp, VREAD, p->p_ucred, p); 245 VOP_UNLOCK(devvp, 0); 246 if (error) { 247 vrele(devvp); 248 return (error); 249 } 250 } 251 if ((mp->mnt_flag & MNT_UPDATE) == 0) 252 error = filecore_mountfs(devvp, mp, p, &args); 253 else { 254 if (devvp != fcmp->fc_devvp) 255 error = EINVAL; /* needs translation */ 256 else 257 vrele(devvp); 258 } 259 if (error) { 260 vrele(devvp); 261 return error; 262 } 263 fcmp = VFSTOFILECORE(mp); 264 return set_statfs_info(path, UIO_USERSPACE, args.fspec, UIO_USERSPACE, 265 mp, p); 266 } 267 268 /* 269 * Common code for mount and mountroot 270 */ 271 static int 272 filecore_mountfs(devvp, mp, p, argp) 273 struct vnode *devvp; 274 struct mount *mp; 275 struct proc *p; 276 struct filecore_args *argp; 277 { 278 struct filecore_mnt *fcmp = (struct filecore_mnt *)0; 279 struct buf *bp = NULL; 280 dev_t dev = devvp->v_rdev; 281 int error = EINVAL; 282 int ronly = (mp->mnt_flag & MNT_RDONLY) != 0; 283 extern struct vnode *rootvp; 284 struct filecore_disc_record *fcdr; 285 unsigned map; 286 unsigned log2secsize; 287 288 if (!ronly) 289 return EROFS; 290 291 /* 292 * Disallow multiple mounts of the same device. 293 * Disallow mounting of a device that is currently in use 294 * (except for root, which might share swap device for miniroot). 295 * Flush out any old buffers remaining from a previous use. 296 */ 297 if ((error = vfs_mountedon(devvp)) != 0) 298 return error; 299 if (vcount(devvp) > 1 && devvp != rootvp) 300 return EBUSY; 301 if ((error = vinvalbuf(devvp, V_SAVE, p->p_ucred, p, 0, 0)) != 0) 302 return (error); 303 304 error = VOP_OPEN(devvp, ronly ? FREAD : FREAD|FWRITE, FSCRED, p); 305 if (error) 306 return error; 307 308 /* Read the filecore boot block to check FS validity and to find the map */ 309 error = bread(devvp, FILECORE_BOOTBLOCK_BLKN, 310 FILECORE_BOOTBLOCK_SIZE, NOCRED, &bp); 311 #ifdef FILECORE_DEBUG_BR 312 printf("bread(%p, %x, %d, CRED, %p)=%d\n", devvp, 313 FILECORE_BOOTBLOCK_BLKN, FILECORE_BOOTBLOCK_SIZE, 314 bp, error); 315 #endif 316 if (error != 0) 317 goto out; 318 if (filecore_bbchecksum(bp->b_data) != 0) { 319 error = EINVAL; 320 goto out; 321 } 322 fcdr = (struct filecore_disc_record *)(bp->b_data+FILECORE_BB_DISCREC); 323 map = ((((8 << fcdr->log2secsize) - fcdr->zone_spare) 324 * (fcdr->nzones / 2) - 8 * FILECORE_DISCREC_SIZE) 325 << fcdr->log2bpmb) >> fcdr->log2secsize; 326 log2secsize = fcdr->log2secsize; 327 bp->b_flags |= B_AGE; 328 #ifdef FILECORE_DEBUG_BR 329 printf("brelse(%p) vf1\n", bp); 330 #endif 331 brelse(bp); 332 bp = NULL; 333 334 /* Read the bootblock in the map */ 335 error = bread(devvp, map, 1 << log2secsize, NOCRED, &bp); 336 #ifdef FILECORE_DEBUG_BR 337 printf("bread(%p, %x, %d, CRED, %p)=%d\n", devvp, 338 map, 1 << log2secsize, bp, error); 339 #endif 340 if (error != 0) 341 goto out; 342 fcdr = (struct filecore_disc_record *)(bp->b_data + 4); 343 fcmp = malloc(sizeof *fcmp, M_FILECOREMNT, M_WAITOK); 344 memset((caddr_t)fcmp, 0, sizeof *fcmp); 345 if (fcdr->log2bpmb > fcdr->log2secsize) 346 fcmp->log2bsize = fcdr->log2bpmb; 347 else fcmp->log2bsize = fcdr->log2secsize; 348 fcmp->blksize = 1 << fcmp->log2bsize; 349 memcpy((caddr_t)&fcmp->drec, (caddr_t)fcdr, sizeof(*fcdr)); 350 fcmp->map = map; 351 fcmp->idspz = ((8 << fcdr->log2secsize) - fcdr->zone_spare) 352 / (fcdr->idlen + 1); 353 fcmp->mask = (1 << fcdr->idlen) - 1; 354 if (fcdr->big_flag & 1) { 355 fcmp->nblks = ((((u_int64_t)fcdr->disc_size_2) << 32) 356 + fcdr->disc_size) / fcmp->blksize; 357 } else { 358 fcmp->nblks=fcdr->disc_size / fcmp->blksize; 359 } 360 361 bp->b_flags |= B_AGE; 362 #ifdef FILECORE_DEBUG_BR 363 printf("brelse(%p) vf2\n", bp); 364 #endif 365 brelse(bp); 366 bp = NULL; 367 368 mp->mnt_data = fcmp; 369 mp->mnt_stat.f_fsid.val[0] = (long)dev; 370 mp->mnt_stat.f_fsid.val[1] = makefstype(MOUNT_FILECORE); 371 mp->mnt_maxsymlinklen = 0; 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 = p->p_cred->p_ruid; 382 fcmp->fc_gid = p->p_cred->p_rgid; 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, p); 398 VOP_UNLOCK(devvp, 0); 399 if (fcmp) { 400 free((caddr_t)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, p) 413 struct mount *mp; 414 int flags; 415 struct proc *p; 416 { 417 return 0; 418 } 419 420 /* 421 * unmount system call 422 */ 423 int 424 filecore_unmount(mp, mntflags, p) 425 struct mount *mp; 426 int mntflags; 427 struct proc *p; 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, p); 448 vput(fcmp->fc_devvp); 449 free((caddr_t)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, p) 478 struct mount *mp; 479 int cmd; 480 uid_t uid; 481 caddr_t arg; 482 struct proc *p; 483 { 484 485 return (EOPNOTSUPP); 486 } 487 488 /* 489 * Get file system statistics. 490 */ 491 int 492 filecore_statfs(mp, sbp, p) 493 struct mount *mp; 494 struct statfs *sbp; 495 struct proc *p; 496 { 497 struct filecore_mnt *fcmp = VFSTOFILECORE(mp); 498 499 #ifdef COMPAT_09 500 sbp->f_type = 255; 501 #else 502 sbp->f_type = 0; 503 #endif 504 sbp->f_bsize = fcmp->blksize; 505 sbp->f_iosize = sbp->f_bsize; /* XXX */ 506 sbp->f_blocks = fcmp->nblks; 507 sbp->f_bfree = 0; /* total free blocks */ 508 sbp->f_bavail = 0; /* blocks free for non superuser */ 509 sbp->f_files = 0; /* total files */ 510 sbp->f_ffree = 0; /* free file nodes */ 511 copy_statfs_info(sbp, mp); 512 return 0; 513 } 514 515 /* ARGSUSED */ 516 int 517 filecore_sync(mp, waitfor, cred, p) 518 struct mount *mp; 519 int waitfor; 520 struct ucred *cred; 521 struct proc *p; 522 { 523 return (0); 524 } 525 526 /* 527 * File handle to vnode 528 * 529 * Have to be really careful about stale file handles: 530 * - check that the inode number is in range 531 * - call iget() to get the locked inode 532 * - check for an unallocated inode (i_mode == 0) 533 * - check that the generation number matches 534 */ 535 536 struct ifid { 537 ushort ifid_len; 538 ushort ifid_pad; 539 u_int32_t ifid_ino; 540 }; 541 542 /* ARGSUSED */ 543 int 544 filecore_fhtovp(mp, fhp, vpp) 545 struct mount *mp; 546 struct fid *fhp; 547 struct vnode **vpp; 548 { 549 struct ifid *ifhp = (struct ifid *)fhp; 550 struct vnode *nvp; 551 struct filecore_node *ip; 552 int error; 553 554 if ((error = VFS_VGET(mp, ifhp->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 /* ARGSUSED */ 569 int 570 filecore_checkexp(mp, nam, exflagsp, credanonp) 571 struct mount *mp; 572 struct mbuf *nam; 573 int *exflagsp; 574 struct ucred **credanonp; 575 { 576 struct filecore_mnt *fcmp = VFSTOFILECORE(mp); 577 struct netcred *np; 578 579 /* 580 * Get the export permission structure for this <mp, client> tuple. 581 */ 582 np = vfs_export_lookup(mp, &fcmp->fc_export, nam); 583 if (np == NULL) 584 return (EACCES); 585 586 *exflagsp = np->netc_exflags; 587 *credanonp = &np->netc_anon; 588 return (0); 589 } 590 591 /* This looks complicated. Look at other vgets as well as the iso9660 one. 592 * 593 * The filecore inode number is made up of 1 byte directory entry index and 594 * 3 bytes of the internal disc address of the directory. On a read-only 595 * filesystem this is unique. For a read-write version we may not be able to 596 * do vget, see msdosfs. 597 */ 598 599 int 600 filecore_vget(mp, ino, vpp) 601 struct mount *mp; 602 ino_t ino; 603 struct vnode **vpp; 604 { 605 struct filecore_mnt *fcmp; 606 struct filecore_node *ip; 607 struct buf *bp; 608 struct vnode *vp; 609 dev_t dev; 610 int error; 611 612 fcmp = VFSTOFILECORE(mp); 613 dev = fcmp->fc_dev; 614 if ((*vpp = filecore_ihashget(dev, ino)) != NULLVP) 615 return (0); 616 617 /* Allocate a new vnode/filecore_node. */ 618 if ((error = getnewvnode(VT_FILECORE, mp, filecore_vnodeop_p, &vp)) 619 != 0) { 620 *vpp = NULLVP; 621 return (error); 622 } 623 ip = pool_get(&filecore_node_pool, PR_WAITOK); 624 memset(ip, 0, sizeof(struct filecore_node)); 625 vp->v_data = ip; 626 ip->i_vnode = vp; 627 ip->i_dev = dev; 628 ip->i_number = ino; 629 ip->i_block = -1; 630 ip->i_parent = -2; 631 632 /* 633 * Put it onto its hash chain and lock it so that other requests for 634 * this inode will block if they arrive while we are sleeping waiting 635 * for old data structures to be purged or for the contents of the 636 * disk portion of this inode to be read. 637 */ 638 filecore_ihashins(ip); 639 640 if (ino == FILECORE_ROOTINO) { 641 /* Here we need to construct a root directory inode */ 642 memcpy((caddr_t)ip->i_dirent.name, (caddr_t)"root", 4); 643 ip->i_dirent.load = 0; 644 ip->i_dirent.exec = 0; 645 ip->i_dirent.len = FILECORE_DIR_SIZE; 646 ip->i_dirent.addr = fcmp->drec.root; 647 ip->i_dirent.attr = FILECORE_ATTR_DIR | FILECORE_ATTR_READ; 648 649 } else { 650 /* Read in Data from Directory Entry */ 651 if ((error = filecore_bread(fcmp, ino & FILECORE_INO_MASK, 652 FILECORE_DIR_SIZE, NOCRED, &bp)) != 0) { 653 vput(vp); 654 #ifdef FILECORE_DEBUG_BR 655 printf("brelse(%p) vf4\n", bp); 656 #endif 657 brelse(bp); 658 *vpp = NULL; 659 return (error); 660 } 661 662 memcpy((caddr_t)&ip->i_dirent, 663 (caddr_t)fcdirentry(bp->b_data, ino >> FILECORE_INO_INDEX), 664 sizeof(struct filecore_direntry)); 665 #ifdef FILECORE_DEBUG_BR 666 printf("brelse(%p) vf5\n", bp); 667 #endif 668 brelse(bp); 669 } 670 671 ip->i_mnt = fcmp; 672 ip->i_devvp = fcmp->fc_devvp; 673 ip->i_diroff = 0; 674 VREF(ip->i_devvp); 675 676 /* 677 * Setup type 678 */ 679 vp->v_type = VREG; 680 if (ip->i_dirent.attr & FILECORE_ATTR_DIR) 681 vp->v_type = VDIR; 682 683 /* 684 * Initialize the associated vnode 685 */ 686 switch (vp->v_type) { 687 case VFIFO: 688 case VCHR: 689 case VBLK: 690 /* 691 * Devices not supported. 692 */ 693 vput(vp); 694 return (EOPNOTSUPP); 695 case VLNK: 696 case VNON: 697 case VSOCK: 698 case VDIR: 699 case VBAD: 700 case VREG: 701 break; 702 } 703 704 if (ino == FILECORE_ROOTINO) 705 vp->v_flag |= VROOT; 706 707 /* 708 * XXX need generation number? 709 */ 710 711 genfs_node_init(vp, &filecore_genfsops); 712 vp->v_size = ip->i_size; 713 *vpp = vp; 714 return (0); 715 } 716 717 /* 718 * Vnode pointer to File handle 719 */ 720 /* ARGSUSED */ 721 int 722 filecore_vptofh(vp, fhp) 723 struct vnode *vp; 724 struct fid *fhp; 725 { 726 struct filecore_node *ip = VTOI(vp); 727 struct ifid *ifhp; 728 729 ifhp = (struct ifid *)fhp; 730 ifhp->ifid_len = sizeof(struct ifid); 731 ifhp->ifid_ino = ip->i_number; 732 return 0; 733 } 734 735 int 736 filecore_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p) 737 int *name; 738 u_int namelen; 739 void *oldp; 740 size_t *oldlenp; 741 void *newp; 742 size_t newlen; 743 struct proc *p; 744 { 745 return (EOPNOTSUPP); 746 } 747
Indexes created Wed Oct 01 12:09:54 GMT 2025