filecore_vfsops.c revision 1.8
1 /* $NetBSD: filecore_vfsops.c,v 1.8 2003/12/05 00:51:08 bjh21 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 1.8 2003/12/05 00:51:08 bjh21 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 91 #include <fs/filecorefs/filecore.h> 92 #include <fs/filecorefs/filecore_extern.h> 93 #include <fs/filecorefs/filecore_node.h> 94 #include <fs/filecorefs/filecore_mount.h> 95 96 MALLOC_DEFINE(M_FILECOREMNT, "filecore mount", "Filecore FS mount structures"); 97 98 extern const struct vnodeopv_desc filecore_vnodeop_opv_desc; 99 100 const struct vnodeopv_desc * const filecore_vnodeopv_descs[] = { 101 &filecore_vnodeop_opv_desc, 102 NULL, 103 }; 104 105 struct vfsops filecore_vfsops = { 106 MOUNT_FILECORE, 107 filecore_mount, 108 filecore_start, 109 filecore_unmount, 110 filecore_root, 111 filecore_quotactl, 112 filecore_statfs, 113 filecore_sync, 114 filecore_vget, 115 filecore_fhtovp, 116 filecore_vptofh, 117 filecore_init, 118 filecore_reinit, 119 filecore_done, 120 NULL, 121 NULL, /* filecore_mountroot */ 122 filecore_checkexp, 123 filecore_vnodeopv_descs, 124 }; 125 126 struct genfs_ops filecore_genfsops = { 127 genfs_size, 128 }; 129 130 /* 131 * Called by vfs_mountroot when iso is going to be mounted as root. 132 * 133 * Name is updated by mount(8) after booting. 134 */ 135 136 static int filecore_mountfs __P((struct vnode *devvp, struct mount *mp, 137 struct proc *p, struct filecore_args *argp)); 138 139 #if 0 140 int 141 filecore_mountroot() 142 { 143 struct mount *mp; 144 extern struct vnode *rootvp; 145 struct proc *p = curproc; /* XXX */ 146 int error; 147 struct filecore_args args; 148 149 if (root_device->dv_class != DV_DISK) 150 return (ENODEV); 151 152 /* 153 * Get vnodes for swapdev and rootdev. 154 */ 155 if (bdevvp(rootdev, &rootvp)) 156 panic("filecore_mountroot: can't setup rootvp"); 157 158 if ((error = vfs_rootmountalloc(MOUNT_FILECORE, "root_device", &mp)) != 0) 159 return (error); 160 161 args.flags = FILECOREMNT_ROOT; 162 if ((error = filecore_mountfs(rootvp, mp, p, &args)) != 0) { 163 mp->mnt_op->vfs_refcount--; 164 vfs_unbusy(mp); 165 free(mp, M_MOUNT); 166 return (error); 167 } 168 simple_lock(&mountlist_slock); 169 CIRCLEQ_INSERT_TAIL(&mountlist, mp, mnt_list); 170 simple_unlock(&mountlist_slock); 171 (void)filecore_statfs(mp, &mp->mnt_stat, p); 172 vfs_unbusy(mp); 173 return (0); 174 } 175 #endif 176 177 /* 178 * VFS Operations. 179 * 180 * mount system call 181 */ 182 int 183 filecore_mount(mp, path, data, ndp, p) 184 struct mount *mp; 185 const char *path; 186 void *data; 187 struct nameidata *ndp; 188 struct proc *p; 189 { 190 struct vnode *devvp; 191 struct filecore_args args; 192 int error; 193 struct filecore_mnt *fcmp = NULL; 194 195 if (mp->mnt_flag & MNT_GETARGS) { 196 fcmp = VFSTOFILECORE(mp); 197 if (fcmp == NULL) 198 return EIO; 199 args.flags = fcmp->fc_mntflags; 200 args.uid = fcmp->fc_uid; 201 args.gid = fcmp->fc_gid; 202 args.fspec = NULL; 203 vfs_showexport(mp, &args.export, &fcmp->fc_export); 204 return copyout(&args, data, sizeof(args)); 205 } 206 error = copyin(data, (caddr_t)&args, sizeof (struct filecore_args)); 207 if (error) 208 return (error); 209 210 if ((mp->mnt_flag & MNT_RDONLY) == 0) 211 return (EROFS); 212 213 /* 214 * If updating, check whether changing from read-only to 215 * read/write; if there is no device name, that's all we do. 216 */ 217 if (mp->mnt_flag & MNT_UPDATE) { 218 fcmp = VFSTOFILECORE(mp); 219 if (args.fspec == 0) 220 return (vfs_export(mp, &fcmp->fc_export, &args.export)); 221 } 222 /* 223 * Not an update, or updating the name: look up the name 224 * and verify that it refers to a sensible block device. 225 */ 226 NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args.fspec, p); 227 if ((error = namei(ndp)) != 0) 228 return (error); 229 devvp = ndp->ni_vp; 230 231 if (devvp->v_type != VBLK) { 232 vrele(devvp); 233 return ENOTBLK; 234 } 235 if (bdevsw_lookup(devvp->v_rdev) == NULL) { 236 vrele(devvp); 237 return ENXIO; 238 } 239 /* 240 * If mount by non-root, then verify that user has necessary 241 * permissions on the device. 242 */ 243 if (p->p_ucred->cr_uid != 0) { 244 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 245 error = VOP_ACCESS(devvp, VREAD, p->p_ucred, p); 246 VOP_UNLOCK(devvp, 0); 247 if (error) { 248 vrele(devvp); 249 return (error); 250 } 251 } 252 if ((mp->mnt_flag & MNT_UPDATE) == 0) 253 error = filecore_mountfs(devvp, mp, p, &args); 254 else { 255 if (devvp != fcmp->fc_devvp) 256 error = EINVAL; /* needs translation */ 257 else 258 vrele(devvp); 259 } 260 if (error) { 261 vrele(devvp); 262 return error; 263 } 264 fcmp = VFSTOFILECORE(mp); 265 return set_statfs_info(path, UIO_USERSPACE, args.fspec, UIO_USERSPACE, 266 mp, p); 267 } 268 269 /* 270 * Common code for mount and mountroot 271 */ 272 static int 273 filecore_mountfs(devvp, mp, p, argp) 274 struct vnode *devvp; 275 struct mount *mp; 276 struct proc *p; 277 struct filecore_args *argp; 278 { 279 struct filecore_mnt *fcmp = (struct filecore_mnt *)0; 280 struct buf *bp = NULL; 281 dev_t dev = devvp->v_rdev; 282 int error = EINVAL; 283 int ronly = (mp->mnt_flag & MNT_RDONLY) != 0; 284 extern struct vnode *rootvp; 285 struct filecore_disc_record *fcdr; 286 unsigned map; 287 unsigned log2secsize; 288 289 if (!ronly) 290 return EROFS; 291 292 /* 293 * Disallow multiple mounts of the same device. 294 * Disallow mounting of a device that is currently in use 295 * (except for root, which might share swap device for miniroot). 296 * Flush out any old buffers remaining from a previous use. 297 */ 298 if ((error = vfs_mountedon(devvp)) != 0) 299 return error; 300 if (vcount(devvp) > 1 && devvp != rootvp) 301 return EBUSY; 302 if ((error = vinvalbuf(devvp, V_SAVE, p->p_ucred, p, 0, 0)) != 0) 303 return (error); 304 305 error = VOP_OPEN(devvp, ronly ? FREAD : FREAD|FWRITE, FSCRED, p); 306 if (error) 307 return error; 308 309 /* Read the filecore boot block to check FS validity and to find the map */ 310 error = bread(devvp, FILECORE_BOOTBLOCK_BLKN, 311 FILECORE_BOOTBLOCK_SIZE, NOCRED, &bp); 312 #ifdef FILECORE_DEBUG_BR 313 printf("bread(%p, %x, %d, CRED, %p)=%d\n", devvp, 314 FILECORE_BOOTBLOCK_BLKN, FILECORE_BOOTBLOCK_SIZE, 315 bp, error); 316 #endif 317 if (error != 0) 318 goto out; 319 if (filecore_bbchecksum(bp->b_data) != 0) { 320 error = EINVAL; 321 goto out; 322 } 323 fcdr = (struct filecore_disc_record *)(bp->b_data+FILECORE_BB_DISCREC); 324 map = ((((8 << fcdr->log2secsize) - fcdr->zone_spare) 325 * (fcdr->nzones / 2) - 8 * FILECORE_DISCREC_SIZE) 326 << fcdr->log2bpmb) >> fcdr->log2secsize; 327 log2secsize = fcdr->log2secsize; 328 bp->b_flags |= B_AGE; 329 #ifdef FILECORE_DEBUG_BR 330 printf("brelse(%p) vf1\n", bp); 331 #endif 332 brelse(bp); 333 bp = NULL; 334 335 /* Read the bootblock in the map */ 336 error = bread(devvp, map, 1 << log2secsize, NOCRED, &bp); 337 #ifdef FILECORE_DEBUG_BR 338 printf("bread(%p, %x, %d, CRED, %p)=%d\n", devvp, 339 map, 1 << log2secsize, bp, error); 340 #endif 341 if (error != 0) 342 goto out; 343 fcdr = (struct filecore_disc_record *)(bp->b_data + 4); 344 fcmp = malloc(sizeof *fcmp, M_FILECOREMNT, M_WAITOK); 345 memset((caddr_t)fcmp, 0, sizeof *fcmp); 346 if (fcdr->log2bpmb > fcdr->log2secsize) 347 fcmp->log2bsize = fcdr->log2bpmb; 348 else fcmp->log2bsize = fcdr->log2secsize; 349 fcmp->blksize = 1 << fcmp->log2bsize; 350 memcpy((caddr_t)&fcmp->drec, (caddr_t)fcdr, sizeof(*fcdr)); 351 fcmp->map = map; 352 fcmp->idspz = ((8 << fcdr->log2secsize) - fcdr->zone_spare) 353 / (fcdr->idlen + 1); 354 fcmp->mask = (1 << fcdr->idlen) - 1; 355 if (fcdr->big_flag & 1) { 356 fcmp->nblks = ((((u_int64_t)fcdr->disc_size_2) << 32) 357 + fcdr->disc_size) / fcmp->blksize; 358 } else { 359 fcmp->nblks=fcdr->disc_size / fcmp->blksize; 360 } 361 362 bp->b_flags |= B_AGE; 363 #ifdef FILECORE_DEBUG_BR 364 printf("brelse(%p) vf2\n", bp); 365 #endif 366 brelse(bp); 367 bp = NULL; 368 369 mp->mnt_data = fcmp; 370 mp->mnt_stat.f_fsid.val[0] = (long)dev; 371 mp->mnt_stat.f_fsid.val[1] = makefstype(MOUNT_FILECORE); 372 mp->mnt_maxsymlinklen = 0; 373 mp->mnt_flag |= MNT_LOCAL; 374 mp->mnt_dev_bshift = fcdr->log2secsize; 375 mp->mnt_fs_bshift = fcmp->log2bsize; 376 377 fcmp->fc_mountp = mp; 378 fcmp->fc_dev = dev; 379 fcmp->fc_devvp = devvp; 380 fcmp->fc_mntflags = argp->flags; 381 if (argp->flags & FILECOREMNT_USEUID) { 382 fcmp->fc_uid = p->p_cred->p_ruid; 383 fcmp->fc_gid = p->p_cred->p_rgid; 384 } else { 385 fcmp->fc_uid = argp->uid; 386 fcmp->fc_gid = argp->gid; 387 } 388 389 return 0; 390 out: 391 if (bp) { 392 #ifdef FILECORE_DEBUG_BR 393 printf("brelse(%p) vf3\n", bp); 394 #endif 395 brelse(bp); 396 } 397 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 398 (void)VOP_CLOSE(devvp, ronly ? FREAD : FREAD|FWRITE, NOCRED, p); 399 VOP_UNLOCK(devvp, 0); 400 if (fcmp) { 401 free((caddr_t)fcmp, M_FILECOREMNT); 402 mp->mnt_data = NULL; 403 } 404 return error; 405 } 406 407 /* 408 * Make a filesystem operational. 409 * Nothing to do at the moment. 410 */ 411 /* ARGSUSED */ 412 int 413 filecore_start(mp, flags, p) 414 struct mount *mp; 415 int flags; 416 struct proc *p; 417 { 418 return 0; 419 } 420 421 /* 422 * unmount system call 423 */ 424 int 425 filecore_unmount(mp, mntflags, p) 426 struct mount *mp; 427 int mntflags; 428 struct proc *p; 429 { 430 struct filecore_mnt *fcmp; 431 int error, flags = 0; 432 433 if (mntflags & MNT_FORCE) 434 flags |= FORCECLOSE; 435 #if 0 436 mntflushbuf(mp, 0); 437 if (mntinvalbuf(mp)) 438 return EBUSY; 439 #endif 440 if ((error = vflush(mp, NULLVP, flags)) != 0) 441 return (error); 442 443 fcmp = VFSTOFILECORE(mp); 444 445 if (fcmp->fc_devvp->v_type != VBAD) 446 fcmp->fc_devvp->v_specmountpoint = NULL; 447 vn_lock(fcmp->fc_devvp, LK_EXCLUSIVE | LK_RETRY); 448 error = VOP_CLOSE(fcmp->fc_devvp, FREAD, NOCRED, p); 449 vput(fcmp->fc_devvp); 450 free((caddr_t)fcmp, M_FILECOREMNT); 451 mp->mnt_data = NULL; 452 mp->mnt_flag &= ~MNT_LOCAL; 453 return (error); 454 } 455 456 /* 457 * Return root of a filesystem 458 */ 459 int 460 filecore_root(mp, vpp) 461 struct mount *mp; 462 struct vnode **vpp; 463 { 464 struct vnode *nvp; 465 int error; 466 467 if ((error = VFS_VGET(mp, FILECORE_ROOTINO, &nvp)) != 0) 468 return (error); 469 *vpp = nvp; 470 return (0); 471 } 472 473 /* 474 * Do operations associated with quotas, not supported 475 */ 476 /* ARGSUSED */ 477 int 478 filecore_quotactl(mp, cmd, uid, arg, p) 479 struct mount *mp; 480 int cmd; 481 uid_t uid; 482 caddr_t arg; 483 struct proc *p; 484 { 485 486 return (EOPNOTSUPP); 487 } 488 489 /* 490 * Get file system statistics. 491 */ 492 int 493 filecore_statfs(mp, sbp, p) 494 struct mount *mp; 495 struct statfs *sbp; 496 struct proc *p; 497 { 498 struct filecore_mnt *fcmp = VFSTOFILECORE(mp); 499 500 #ifdef COMPAT_09 501 sbp->f_type = 255; 502 #else 503 sbp->f_type = 0; 504 #endif 505 sbp->f_bsize = fcmp->blksize; 506 sbp->f_iosize = sbp->f_bsize; /* XXX */ 507 sbp->f_blocks = fcmp->nblks; 508 sbp->f_bfree = 0; /* total free blocks */ 509 sbp->f_bavail = 0; /* blocks free for non superuser */ 510 sbp->f_files = 0; /* total files */ 511 sbp->f_ffree = 0; /* free file nodes */ 512 copy_statfs_info(sbp, mp); 513 return 0; 514 } 515 516 /* ARGSUSED */ 517 int 518 filecore_sync(mp, waitfor, cred, p) 519 struct mount *mp; 520 int waitfor; 521 struct ucred *cred; 522 struct proc *p; 523 { 524 return (0); 525 } 526 527 /* 528 * File handle to vnode 529 * 530 * Have to be really careful about stale file handles: 531 * - check that the inode number is in range 532 * - call iget() to get the locked inode 533 * - check for an unallocated inode (i_mode == 0) 534 * - check that the generation number matches 535 */ 536 537 struct ifid { 538 ushort ifid_len; 539 ushort ifid_pad; 540 u_int32_t ifid_ino; 541 }; 542 543 /* ARGSUSED */ 544 int 545 filecore_fhtovp(mp, fhp, vpp) 546 struct mount *mp; 547 struct fid *fhp; 548 struct vnode **vpp; 549 { 550 struct ifid *ifhp = (struct ifid *)fhp; 551 struct vnode *nvp; 552 struct filecore_node *ip; 553 int error; 554 555 if ((error = VFS_VGET(mp, ifhp->ifid_ino, &nvp)) != 0) { 556 *vpp = NULLVP; 557 return (error); 558 } 559 ip = VTOI(nvp); 560 if (filecore_staleinode(ip)) { 561 vput(nvp); 562 *vpp = NULLVP; 563 return (ESTALE); 564 } 565 *vpp = nvp; 566 return (0); 567 } 568 569 /* ARGSUSED */ 570 int 571 filecore_checkexp(mp, nam, exflagsp, credanonp) 572 struct mount *mp; 573 struct mbuf *nam; 574 int *exflagsp; 575 struct ucred **credanonp; 576 { 577 struct filecore_mnt *fcmp = VFSTOFILECORE(mp); 578 struct netcred *np; 579 580 /* 581 * Get the export permission structure for this <mp, client> tuple. 582 */ 583 np = vfs_export_lookup(mp, &fcmp->fc_export, nam); 584 if (np == NULL) 585 return (EACCES); 586 587 *exflagsp = np->netc_exflags; 588 *credanonp = &np->netc_anon; 589 return (0); 590 } 591 592 /* This looks complicated. Look at other vgets as well as the iso9660 one. 593 * 594 * The filecore inode number is made up of 1 byte directory entry index and 595 * 3 bytes of the internal disc address of the directory. On a read-only 596 * filesystem this is unique. For a read-write version we may not be able to 597 * do vget, see msdosfs. 598 */ 599 600 int 601 filecore_vget(mp, ino, vpp) 602 struct mount *mp; 603 ino_t ino; 604 struct vnode **vpp; 605 { 606 struct filecore_mnt *fcmp; 607 struct filecore_node *ip; 608 struct buf *bp; 609 struct vnode *vp; 610 dev_t dev; 611 int error; 612 613 fcmp = VFSTOFILECORE(mp); 614 dev = fcmp->fc_dev; 615 if ((*vpp = filecore_ihashget(dev, ino)) != NULLVP) 616 return (0); 617 618 /* Allocate a new vnode/filecore_node. */ 619 if ((error = getnewvnode(VT_FILECORE, mp, filecore_vnodeop_p, &vp)) 620 != 0) { 621 *vpp = NULLVP; 622 return (error); 623 } 624 ip = pool_get(&filecore_node_pool, PR_WAITOK); 625 memset(ip, 0, sizeof(struct filecore_node)); 626 vp->v_data = ip; 627 ip->i_vnode = vp; 628 ip->i_dev = dev; 629 ip->i_number = ino; 630 ip->i_block = -1; 631 ip->i_parent = -2; 632 633 /* 634 * Put it onto its hash chain and lock it so that other requests for 635 * this inode will block if they arrive while we are sleeping waiting 636 * for old data structures to be purged or for the contents of the 637 * disk portion of this inode to be read. 638 */ 639 filecore_ihashins(ip); 640 641 if (ino == FILECORE_ROOTINO) { 642 /* Here we need to construct a root directory inode */ 643 memcpy((caddr_t)ip->i_dirent.name, (caddr_t)"root", 4); 644 ip->i_dirent.load = 0; 645 ip->i_dirent.exec = 0; 646 ip->i_dirent.len = FILECORE_DIR_SIZE; 647 ip->i_dirent.addr = fcmp->drec.root; 648 ip->i_dirent.attr = FILECORE_ATTR_DIR | FILECORE_ATTR_READ; 649 650 } else { 651 /* Read in Data from Directory Entry */ 652 if ((error = filecore_bread(fcmp, ino & FILECORE_INO_MASK, 653 FILECORE_DIR_SIZE, NOCRED, &bp)) != 0) { 654 vput(vp); 655 #ifdef FILECORE_DEBUG_BR 656 printf("brelse(%p) vf4\n", bp); 657 #endif 658 brelse(bp); 659 *vpp = NULL; 660 return (error); 661 } 662 663 memcpy((caddr_t)&ip->i_dirent, 664 (caddr_t)fcdirentry(bp->b_data, ino >> FILECORE_INO_INDEX), 665 sizeof(struct filecore_direntry)); 666 #ifdef FILECORE_DEBUG_BR 667 printf("brelse(%p) vf5\n", bp); 668 #endif 669 brelse(bp); 670 } 671 672 ip->i_mnt = fcmp; 673 ip->i_devvp = fcmp->fc_devvp; 674 ip->i_diroff = 0; 675 VREF(ip->i_devvp); 676 677 /* 678 * Setup type 679 */ 680 vp->v_type = VREG; 681 if (ip->i_dirent.attr & FILECORE_ATTR_DIR) 682 vp->v_type = VDIR; 683 684 /* 685 * Initialize the associated vnode 686 */ 687 switch (vp->v_type) { 688 case VFIFO: 689 case VCHR: 690 case VBLK: 691 /* 692 * Devices not supported. 693 */ 694 vput(vp); 695 return (EOPNOTSUPP); 696 case VLNK: 697 case VNON: 698 case VSOCK: 699 case VDIR: 700 case VBAD: 701 case VREG: 702 break; 703 } 704 705 if (ino == FILECORE_ROOTINO) 706 vp->v_flag |= VROOT; 707 708 /* 709 * XXX need generation number? 710 */ 711 712 genfs_node_init(vp, &filecore_genfsops); 713 vp->v_size = ip->i_size; 714 *vpp = vp; 715 return (0); 716 } 717 718 /* 719 * Vnode pointer to File handle 720 */ 721 /* ARGSUSED */ 722 int 723 filecore_vptofh(vp, fhp) 724 struct vnode *vp; 725 struct fid *fhp; 726 { 727 struct filecore_node *ip = VTOI(vp); 728 struct ifid *ifhp; 729 730 ifhp = (struct ifid *)fhp; 731 ifhp->ifid_len = sizeof(struct ifid); 732 ifhp->ifid_ino = ip->i_number; 733 return 0; 734 } 735 736 SYSCTL_SETUP(sysctl_vfs_filecore_setup, "sysctl vfs.filecore subtree setup") 737 { 738 739 sysctl_createv(SYSCTL_PERMANENT, 740 CTLTYPE_NODE, "vfs", NULL, 741 NULL, 0, NULL, 0, 742 CTL_VFS, CTL_EOL); 743 sysctl_createv(SYSCTL_PERMANENT, 744 CTLTYPE_NODE, "filecore", NULL, 745 NULL, 0, NULL, 0, 746 CTL_VFS, 19, CTL_EOL); 747 /* 748 * XXX the "19" above could be dynamic, thereby eliminating 749 * one more instance of the "number to vfs" mapping problem, 750 * but "19" is the order as taken from sys/mount.h 751 */ 752 } 753
Indexes created Wed Oct 01 12:09:54 GMT 2025