filecore_vfsops.c revision 1.64
1 /* $NetBSD: filecore_vfsops.c,v 1.64 2010/06/24 13:03:09 hannken 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 1.64 2010/06/24 13:03:09 hannken 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/genfs/genfs.h> 81 #include <miscfs/specfs/specdev.h> 82 #include <sys/mount.h> 83 #include <sys/buf.h> 84 #include <sys/file.h> 85 #include <sys/device.h> 86 #include <sys/errno.h> 87 #include <sys/malloc.h> 88 #include <sys/pool.h> 89 #include <sys/conf.h> 90 #include <sys/sysctl.h> 91 #include <sys/kauth.h> 92 #include <sys/module.h> 93 94 #include <fs/filecorefs/filecore.h> 95 #include <fs/filecorefs/filecore_extern.h> 96 #include <fs/filecorefs/filecore_node.h> 97 #include <fs/filecorefs/filecore_mount.h> 98 99 MODULE(MODULE_CLASS_VFS, filecore, NULL); 100 101 MALLOC_JUSTDEFINE(M_FILECOREMNT, 102 "filecore mount", "Filecore FS mount structures"); 103 MALLOC_JUSTDEFINE(M_FILECORETMP, 104 "filecore temp", "Filecore FS temporary structures"); 105 106 static struct sysctllog *filecore_sysctl_log; 107 108 extern const struct vnodeopv_desc filecore_vnodeop_opv_desc; 109 110 const struct vnodeopv_desc * const filecore_vnodeopv_descs[] = { 111 &filecore_vnodeop_opv_desc, 112 NULL, 113 }; 114 115 struct vfsops filecore_vfsops = { 116 MOUNT_FILECORE, 117 sizeof (struct filecore_args), 118 filecore_mount, 119 filecore_start, 120 filecore_unmount, 121 filecore_root, 122 (void *)eopnotsupp, /* vfs_quotactl */ 123 filecore_statvfs, 124 filecore_sync, 125 filecore_vget, 126 filecore_fhtovp, 127 filecore_vptofh, 128 filecore_init, 129 filecore_reinit, 130 filecore_done, 131 NULL, /* filecore_mountroot */ 132 (int (*)(struct mount *, struct vnode *, struct timespec *)) eopnotsupp, 133 vfs_stdextattrctl, 134 (void *)eopnotsupp, /* vfs_suspendctl */ 135 genfs_renamelock_enter, 136 genfs_renamelock_exit, 137 (void *)eopnotsupp, 138 filecore_vnodeopv_descs, 139 0, 140 { NULL, NULL } 141 }; 142 143 static const struct genfs_ops filecore_genfsops = { 144 .gop_size = genfs_size, 145 }; 146 147 static int 148 filecore_modcmd(modcmd_t cmd, void *arg) 149 { 150 int error; 151 152 switch (cmd) { 153 case MODULE_CMD_INIT: 154 error = vfs_attach(&filecore_vfsops); 155 if (error != 0) 156 break; 157 sysctl_createv(&filecore_sysctl_log, 0, NULL, NULL, 158 CTLFLAG_PERMANENT, 159 CTLTYPE_NODE, "vfs", NULL, 160 NULL, 0, NULL, 0, 161 CTL_VFS, CTL_EOL); 162 sysctl_createv(&filecore_sysctl_log, 0, NULL, NULL, 163 CTLFLAG_PERMANENT, 164 CTLTYPE_NODE, "filecore", 165 SYSCTL_DESCR("Acorn FILECORE file system"), 166 NULL, 0, NULL, 0, 167 CTL_VFS, 19, CTL_EOL); 168 /* 169 * XXX the "19" above could be dynamic, thereby eliminating 170 * one more instance of the "number to vfs" mapping problem, 171 * but "19" is the order as taken from sys/mount.h 172 */ 173 break; 174 case MODULE_CMD_FINI: 175 error = vfs_detach(&filecore_vfsops); 176 if (error != 0) 177 break; 178 sysctl_teardown(&filecore_sysctl_log); 179 break; 180 default: 181 error = ENOTTY; 182 break; 183 } 184 185 return (error); 186 } 187 188 /* 189 * Called by vfs_mountroot when iso is going to be mounted as root. 190 * 191 * Name is updated by mount(8) after booting. 192 */ 193 194 static int filecore_mountfs(struct vnode *devvp, struct mount *mp, 195 struct lwp *l, struct filecore_args *argp); 196 197 #if 0 198 int 199 filecore_mountroot(void) 200 { 201 struct mount *mp; 202 extern struct vnode *rootvp; 203 struct proc *p = curproc; /* XXX */ 204 int error; 205 struct filecore_args args; 206 207 if (device_class(root_device) != DV_DISK) 208 return (ENODEV); 209 210 /* 211 * Get vnodes for swapdev and rootdev. 212 */ 213 if (bdevvp(rootdev, &rootvp)) 214 panic("filecore_mountroot: can't setup rootvp"); 215 216 if ((error = vfs_rootmountalloc(MOUNT_FILECORE, "root_device", &mp)) != 0) 217 return (error); 218 219 args.flags = FILECOREMNT_ROOT; 220 if ((error = filecore_mountfs(rootvp, mp, p, &args)) != 0) { 221 vfs_unbusy(mp, false, NULL); 222 vfs_destroy(mp); 223 return (error); 224 } 225 simple_lock(&mountlist_slock); 226 CIRCLEQ_INSERT_TAIL(&mountlist, mp, mnt_list); 227 simple_unlock(&mountlist_slock); 228 (void)filecore_statvfs(mp, &mp->mnt_stat, p); 229 vfs_unbusy(mp, false, NULL); 230 return (0); 231 } 232 #endif 233 234 /* 235 * VFS Operations. 236 * 237 * mount system call 238 */ 239 int 240 filecore_mount(struct mount *mp, const char *path, void *data, size_t *data_len) 241 { 242 struct lwp *l = curlwp; 243 struct vnode *devvp; 244 struct filecore_args *args = data; 245 int error; 246 struct filecore_mnt *fcmp = NULL; 247 248 if (*data_len < sizeof *args) 249 return EINVAL; 250 251 if (mp->mnt_flag & MNT_GETARGS) { 252 fcmp = VFSTOFILECORE(mp); 253 if (fcmp == NULL) 254 return EIO; 255 args->flags = fcmp->fc_mntflags; 256 args->uid = fcmp->fc_uid; 257 args->gid = fcmp->fc_gid; 258 args->fspec = NULL; 259 *data_len = sizeof *args; 260 return 0; 261 } 262 263 if ((mp->mnt_flag & MNT_RDONLY) == 0) 264 return (EROFS); 265 266 if ((mp->mnt_flag & MNT_UPDATE) && args->fspec == NULL) 267 return EINVAL; 268 269 /* 270 * Not an update, or updating the name: look up the name 271 * and verify that it refers to a sensible block device. 272 */ 273 error = namei_simple_user(args->fspec, 274 NSM_FOLLOW_NOEMULROOT, &devvp); 275 if (error != 0) 276 return (error); 277 278 if (devvp->v_type != VBLK) { 279 vrele(devvp); 280 return ENOTBLK; 281 } 282 if (bdevsw_lookup(devvp->v_rdev) == NULL) { 283 vrele(devvp); 284 return ENXIO; 285 } 286 /* 287 * If mount by non-root, then verify that user has necessary 288 * permissions on the device. 289 */ 290 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 291 error = genfs_can_mount(devvp, VREAD, l->l_cred); 292 VOP_UNLOCK(devvp); 293 if (error) { 294 vrele(devvp); 295 return (error); 296 } 297 if ((mp->mnt_flag & MNT_UPDATE) == 0) 298 error = filecore_mountfs(devvp, mp, l, args); 299 else { 300 if (devvp != fcmp->fc_devvp) 301 error = EINVAL; /* needs translation */ 302 else 303 vrele(devvp); 304 } 305 if (error) { 306 vrele(devvp); 307 return error; 308 } 309 fcmp = VFSTOFILECORE(mp); 310 return set_statvfs_info(path, UIO_USERSPACE, args->fspec, UIO_USERSPACE, 311 mp->mnt_op->vfs_name, mp, l); 312 } 313 314 /* 315 * Common code for mount and mountroot 316 */ 317 static int 318 filecore_mountfs(struct vnode *devvp, struct mount *mp, struct lwp *l, struct filecore_args *argp) 319 { 320 struct filecore_mnt *fcmp = (struct filecore_mnt *)0; 321 struct buf *bp = NULL; 322 dev_t dev = devvp->v_rdev; 323 int error = EINVAL; 324 int ronly = (mp->mnt_flag & MNT_RDONLY) != 0; 325 struct filecore_disc_record *fcdr; 326 unsigned map; 327 unsigned log2secsize; 328 329 if (!ronly) 330 return EROFS; 331 332 if ((error = vinvalbuf(devvp, V_SAVE, l->l_cred, l, 0, 0)) != 0) 333 return (error); 334 335 error = VOP_OPEN(devvp, ronly ? FREAD : FREAD|FWRITE, FSCRED); 336 if (error) 337 return error; 338 339 /* Read the filecore boot block to check FS validity and to find the map */ 340 error = bread(devvp, FILECORE_BOOTBLOCK_BLKN, 341 FILECORE_BOOTBLOCK_SIZE, NOCRED, 0, &bp); 342 #ifdef FILECORE_DEBUG_BR 343 printf("bread(%p, %x, %d, CRED, %p)=%d\n", devvp, 344 FILECORE_BOOTBLOCK_BLKN, FILECORE_BOOTBLOCK_SIZE, 345 bp, error); 346 #endif 347 if (error != 0) 348 goto out; 349 350 KASSERT(bp != NULL); 351 if (filecore_bbchecksum(bp->b_data) != 0) { 352 error = EINVAL; 353 goto out; 354 } 355 fcdr = (struct filecore_disc_record *)((char *)(bp->b_data) + 356 FILECORE_BB_DISCREC); 357 map = ((((8 << fcdr->log2secsize) - fcdr->zone_spare) 358 * (fcdr->nzones / 2) - 8 * FILECORE_DISCREC_SIZE) 359 << fcdr->log2bpmb) >> fcdr->log2secsize; 360 log2secsize = fcdr->log2secsize; 361 #ifdef FILECORE_DEBUG_BR 362 printf("brelse(%p) vf1\n", bp); 363 #endif 364 brelse(bp, BC_AGE); 365 bp = NULL; 366 367 /* Read the bootblock in the map */ 368 error = bread(devvp, map, 1 << log2secsize, NOCRED, 0, &bp); 369 #ifdef FILECORE_DEBUG_BR 370 printf("bread(%p, %x, %d, CRED, %p)=%d\n", devvp, 371 map, 1 << log2secsize, bp, error); 372 #endif 373 if (error != 0) 374 goto out; 375 fcdr = (struct filecore_disc_record *)((char *)(bp->b_data) + 4); 376 fcmp = malloc(sizeof *fcmp, M_FILECOREMNT, M_WAITOK); 377 memset(fcmp, 0, sizeof *fcmp); 378 if (fcdr->log2bpmb > fcdr->log2secsize) 379 fcmp->log2bsize = fcdr->log2bpmb; 380 else fcmp->log2bsize = fcdr->log2secsize; 381 fcmp->blksize = 1 << fcmp->log2bsize; 382 memcpy(&fcmp->drec, fcdr, sizeof(*fcdr)); 383 fcmp->map = map; 384 fcmp->idspz = ((8 << fcdr->log2secsize) - fcdr->zone_spare) 385 / (fcdr->idlen + 1); 386 fcmp->mask = (1 << fcdr->idlen) - 1; 387 if (fcdr->big_flag & 1) { 388 fcmp->nblks = ((((u_int64_t)fcdr->disc_size_2) << 32) 389 + fcdr->disc_size) / fcmp->blksize; 390 } else { 391 fcmp->nblks=fcdr->disc_size / fcmp->blksize; 392 } 393 394 #ifdef FILECORE_DEBUG_BR 395 printf("brelse(%p) vf2\n", bp); 396 #endif 397 brelse(bp, BC_AGE); 398 bp = NULL; 399 400 mp->mnt_data = fcmp; 401 mp->mnt_stat.f_fsidx.__fsid_val[0] = (long)dev; 402 mp->mnt_stat.f_fsidx.__fsid_val[1] = makefstype(MOUNT_FILECORE); 403 mp->mnt_stat.f_fsid = mp->mnt_stat.f_fsidx.__fsid_val[0]; 404 mp->mnt_stat.f_namemax = 10; 405 mp->mnt_flag |= MNT_LOCAL; 406 mp->mnt_dev_bshift = fcdr->log2secsize; 407 mp->mnt_fs_bshift = fcmp->log2bsize; 408 409 fcmp->fc_mountp = mp; 410 fcmp->fc_dev = dev; 411 fcmp->fc_devvp = devvp; 412 fcmp->fc_mntflags = argp->flags; 413 if (argp->flags & FILECOREMNT_USEUID) { 414 fcmp->fc_uid = kauth_cred_getuid(l->l_cred); 415 fcmp->fc_gid = kauth_cred_getgid(l->l_cred); 416 } else { 417 fcmp->fc_uid = argp->uid; 418 fcmp->fc_gid = argp->gid; 419 } 420 421 return 0; 422 out: 423 if (bp) { 424 #ifdef FILECORE_DEBUG_BR 425 printf("brelse(%p) vf3\n", bp); 426 #endif 427 brelse(bp, 0); 428 } 429 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 430 (void)VOP_CLOSE(devvp, ronly ? FREAD : FREAD|FWRITE, NOCRED); 431 VOP_UNLOCK(devvp); 432 return error; 433 } 434 435 /* 436 * Make a filesystem operational. 437 * Nothing to do at the moment. 438 */ 439 /* ARGSUSED */ 440 int 441 filecore_start(struct mount *mp, int flags) 442 { 443 return 0; 444 } 445 446 /* 447 * unmount system call 448 */ 449 int 450 filecore_unmount(struct mount *mp, int mntflags) 451 { 452 struct filecore_mnt *fcmp; 453 int error, flags = 0; 454 455 if (mntflags & MNT_FORCE) 456 flags |= FORCECLOSE; 457 if ((error = vflush(mp, NULLVP, flags)) != 0) 458 return (error); 459 460 fcmp = VFSTOFILECORE(mp); 461 462 if (fcmp->fc_devvp->v_type != VBAD) 463 fcmp->fc_devvp->v_specmountpoint = NULL; 464 vn_lock(fcmp->fc_devvp, LK_EXCLUSIVE | LK_RETRY); 465 error = VOP_CLOSE(fcmp->fc_devvp, FREAD, NOCRED); 466 vput(fcmp->fc_devvp); 467 free(fcmp, M_FILECOREMNT); 468 mp->mnt_data = NULL; 469 mp->mnt_flag &= ~MNT_LOCAL; 470 return (error); 471 } 472 473 /* 474 * Return root of a filesystem 475 */ 476 int 477 filecore_root(struct mount *mp, struct vnode **vpp) 478 { 479 struct vnode *nvp; 480 int error; 481 482 if ((error = VFS_VGET(mp, FILECORE_ROOTINO, &nvp)) != 0) 483 return (error); 484 *vpp = nvp; 485 return (0); 486 } 487 488 /* 489 * Get file system statistics. 490 */ 491 int 492 filecore_statvfs(struct mount *mp, struct statvfs *sbp) 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(struct mount *mp, int waitfor, kauth_cred_t cred) 514 { 515 return (0); 516 } 517 518 /* 519 * File handle to vnode 520 * 521 * Have to be really careful about stale file handles: 522 * - check that the inode number is in range 523 * - call iget() to get the locked inode 524 * - check for an unallocated inode (i_mode == 0) 525 * - check that the generation number matches 526 */ 527 528 struct ifid { 529 ushort ifid_len; 530 ushort ifid_pad; 531 u_int32_t ifid_ino; 532 }; 533 534 /* ARGSUSED */ 535 int 536 filecore_fhtovp(struct mount *mp, struct fid *fhp, struct vnode **vpp) 537 { 538 struct ifid ifh; 539 struct vnode *nvp; 540 struct filecore_node *ip; 541 int error; 542 543 if (fhp->fid_len != sizeof(struct ifid)) 544 return EINVAL; 545 546 memcpy(&ifh, fhp, sizeof(ifh)); 547 if ((error = VFS_VGET(mp, ifh.ifid_ino, &nvp)) != 0) { 548 *vpp = NULLVP; 549 return (error); 550 } 551 ip = VTOI(nvp); 552 if (filecore_staleinode(ip)) { 553 vput(nvp); 554 *vpp = NULLVP; 555 return (ESTALE); 556 } 557 *vpp = nvp; 558 return (0); 559 } 560 561 /* This looks complicated. Look at other vgets as well as the iso9660 one. 562 * 563 * The filecore inode number is made up of 1 byte directory entry index and 564 * 3 bytes of the internal disc address of the directory. On a read-only 565 * filesystem this is unique. For a read-write version we may not be able to 566 * do vget, see msdosfs. 567 */ 568 569 int 570 filecore_vget(struct mount *mp, ino_t ino, struct vnode **vpp) 571 { 572 struct filecore_mnt *fcmp; 573 struct filecore_node *ip; 574 struct buf *bp; 575 struct vnode *vp; 576 dev_t dev; 577 int error; 578 579 fcmp = VFSTOFILECORE(mp); 580 dev = fcmp->fc_dev; 581 if ((*vpp = filecore_ihashget(dev, ino)) != NULLVP) 582 return (0); 583 584 /* Allocate a new vnode/filecore_node. */ 585 if ((error = getnewvnode(VT_FILECORE, mp, filecore_vnodeop_p, &vp)) 586 != 0) { 587 *vpp = NULLVP; 588 return (error); 589 } 590 ip = pool_get(&filecore_node_pool, PR_WAITOK); 591 memset(ip, 0, sizeof(struct filecore_node)); 592 vp->v_data = ip; 593 ip->i_vnode = vp; 594 ip->i_dev = dev; 595 ip->i_number = ino; 596 ip->i_block = -1; 597 ip->i_parent = -2; 598 genfs_node_init(vp, &filecore_genfsops); 599 600 /* 601 * Put it onto its hash chain and lock it so that other requests for 602 * this inode will block if they arrive while we are sleeping waiting 603 * for old data structures to be purged or for the contents of the 604 * disk portion of this inode to be read. 605 */ 606 filecore_ihashins(ip); 607 608 if (ino == FILECORE_ROOTINO) { 609 /* Here we need to construct a root directory inode */ 610 memcpy(ip->i_dirent.name, "root", 4); 611 ip->i_dirent.load = 0; 612 ip->i_dirent.exec = 0; 613 ip->i_dirent.len = FILECORE_DIR_SIZE; 614 ip->i_dirent.addr = fcmp->drec.root; 615 ip->i_dirent.attr = FILECORE_ATTR_DIR | FILECORE_ATTR_READ; 616 617 } else { 618 /* Read in Data from Directory Entry */ 619 if ((error = filecore_bread(fcmp, ino & FILECORE_INO_MASK, 620 FILECORE_DIR_SIZE, NOCRED, &bp)) != 0) { 621 vput(vp); 622 #ifdef FILECORE_DEBUG_BR 623 printf("brelse(%p) vf4\n", bp); 624 #endif 625 brelse(bp, 0); 626 *vpp = NULL; 627 return (error); 628 } 629 630 memcpy(&ip->i_dirent, 631 fcdirentry(bp->b_data, ino >> FILECORE_INO_INDEX), 632 sizeof(struct filecore_direntry)); 633 #ifdef FILECORE_DEBUG_BR 634 printf("brelse(%p) vf5\n", bp); 635 #endif 636 brelse(bp, 0); 637 } 638 639 ip->i_mnt = fcmp; 640 ip->i_devvp = fcmp->fc_devvp; 641 ip->i_diroff = 0; 642 vref(ip->i_devvp); 643 644 /* 645 * Setup type 646 */ 647 vp->v_type = VREG; 648 if (ip->i_dirent.attr & FILECORE_ATTR_DIR) 649 vp->v_type = VDIR; 650 651 /* 652 * Initialize the associated vnode 653 */ 654 switch (vp->v_type) { 655 case VFIFO: 656 case VCHR: 657 case VBLK: 658 /* 659 * Devices not supported. 660 */ 661 vput(vp); 662 return (EOPNOTSUPP); 663 case VLNK: 664 case VNON: 665 case VSOCK: 666 case VDIR: 667 case VBAD: 668 case VREG: 669 break; 670 } 671 672 if (ino == FILECORE_ROOTINO) 673 vp->v_vflag |= VV_ROOT; 674 675 /* 676 * XXX need generation number? 677 */ 678 679 uvm_vnp_setsize(vp, ip->i_size); 680 *vpp = vp; 681 return (0); 682 } 683 684 /* 685 * Vnode pointer to File handle 686 */ 687 /* ARGSUSED */ 688 int 689 filecore_vptofh(struct vnode *vp, struct fid *fhp, size_t *fh_size) 690 { 691 struct filecore_node *ip = VTOI(vp); 692 struct ifid ifh; 693 694 if (*fh_size < sizeof(struct ifid)) { 695 *fh_size = sizeof(struct ifid); 696 return E2BIG; 697 } 698 memset(&ifh, 0, sizeof(ifh)); 699 ifh.ifid_len = sizeof(struct ifid); 700 ifh.ifid_ino = ip->i_number; 701 memcpy(fhp, &ifh, sizeof(ifh)); 702 return 0; 703 } 704
Indexes created Wed Oct 01 12:09:54 GMT 2025