filecore_vfsops.c revision 1.72
1 /* $NetBSD: filecore_vfsops.c,v 1.72 2013/11/23 13:35:36 christos 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 1.72 2013/11/23 13:35:36 christos 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/pool.h> 88 #include <sys/conf.h> 89 #include <sys/sysctl.h> 90 #include <sys/kauth.h> 91 #include <sys/module.h> 92 93 #include <fs/filecorefs/filecore.h> 94 #include <fs/filecorefs/filecore_extern.h> 95 #include <fs/filecorefs/filecore_node.h> 96 #include <fs/filecorefs/filecore_mount.h> 97 98 MODULE(MODULE_CLASS_VFS, filecore, NULL); 99 100 static struct sysctllog *filecore_sysctl_log; 101 102 extern const struct vnodeopv_desc filecore_vnodeop_opv_desc; 103 104 const struct vnodeopv_desc * const filecore_vnodeopv_descs[] = { 105 &filecore_vnodeop_opv_desc, 106 NULL, 107 }; 108 109 struct vfsops filecore_vfsops = { 110 MOUNT_FILECORE, 111 sizeof (struct filecore_args), 112 filecore_mount, 113 filecore_start, 114 filecore_unmount, 115 filecore_root, 116 (void *)eopnotsupp, /* vfs_quotactl */ 117 filecore_statvfs, 118 filecore_sync, 119 filecore_vget, 120 filecore_fhtovp, 121 filecore_vptofh, 122 filecore_init, 123 filecore_reinit, 124 filecore_done, 125 NULL, /* filecore_mountroot */ 126 (int (*)(struct mount *, struct vnode *, struct timespec *)) eopnotsupp, 127 vfs_stdextattrctl, 128 (void *)eopnotsupp, /* vfs_suspendctl */ 129 genfs_renamelock_enter, 130 genfs_renamelock_exit, 131 (void *)eopnotsupp, 132 filecore_vnodeopv_descs, 133 0, 134 { NULL, NULL } 135 }; 136 137 static const struct genfs_ops filecore_genfsops = { 138 .gop_size = genfs_size, 139 }; 140 141 static int 142 filecore_modcmd(modcmd_t cmd, void *arg) 143 { 144 int error; 145 146 switch (cmd) { 147 case MODULE_CMD_INIT: 148 error = vfs_attach(&filecore_vfsops); 149 if (error != 0) 150 break; 151 sysctl_createv(&filecore_sysctl_log, 0, NULL, NULL, 152 CTLFLAG_PERMANENT, 153 CTLTYPE_NODE, "vfs", NULL, 154 NULL, 0, NULL, 0, 155 CTL_VFS, CTL_EOL); 156 sysctl_createv(&filecore_sysctl_log, 0, NULL, NULL, 157 CTLFLAG_PERMANENT, 158 CTLTYPE_NODE, "filecore", 159 SYSCTL_DESCR("Acorn FILECORE file system"), 160 NULL, 0, NULL, 0, 161 CTL_VFS, 19, CTL_EOL); 162 /* 163 * XXX the "19" above could be dynamic, thereby eliminating 164 * one more instance of the "number to vfs" mapping problem, 165 * but "19" is the order as taken from sys/mount.h 166 */ 167 break; 168 case MODULE_CMD_FINI: 169 error = vfs_detach(&filecore_vfsops); 170 if (error != 0) 171 break; 172 sysctl_teardown(&filecore_sysctl_log); 173 break; 174 default: 175 error = ENOTTY; 176 break; 177 } 178 179 return (error); 180 } 181 182 /* 183 * Called by vfs_mountroot when iso is going to be mounted as root. 184 * 185 * Name is updated by mount(8) after booting. 186 */ 187 188 static int filecore_mountfs(struct vnode *devvp, struct mount *mp, 189 struct lwp *l, struct filecore_args *argp); 190 191 #if 0 192 int 193 filecore_mountroot(void) 194 { 195 struct mount *mp; 196 extern struct vnode *rootvp; 197 struct proc *p = curproc; /* XXX */ 198 int error; 199 struct filecore_args args; 200 201 if (device_class(root_device) != DV_DISK) 202 return (ENODEV); 203 204 /* 205 * Get vnodes for swapdev and rootdev. 206 */ 207 if (bdevvp(rootdev, &rootvp)) 208 panic("filecore_mountroot: can't setup rootvp"); 209 210 if ((error = vfs_rootmountalloc(MOUNT_FILECORE, "root_device", &mp)) != 0) 211 return (error); 212 213 args.flags = FILECOREMNT_ROOT; 214 if ((error = filecore_mountfs(rootvp, mp, p, &args)) != 0) { 215 vfs_unbusy(mp, false, NULL); 216 vfs_destroy(mp); 217 return (error); 218 } 219 mountlist_append(mp); 220 (void)filecore_statvfs(mp, &mp->mnt_stat, p); 221 vfs_unbusy(mp, false, NULL); 222 return (0); 223 } 224 #endif 225 226 /* 227 * VFS Operations. 228 * 229 * mount system call 230 */ 231 int 232 filecore_mount(struct mount *mp, const char *path, void *data, size_t *data_len) 233 { 234 struct lwp *l = curlwp; 235 struct vnode *devvp; 236 struct filecore_args *args = data; 237 int error; 238 struct filecore_mnt *fcmp = NULL; 239 240 if (*data_len < sizeof *args) 241 return EINVAL; 242 243 if (mp->mnt_flag & MNT_GETARGS) { 244 fcmp = VFSTOFILECORE(mp); 245 if (fcmp == NULL) 246 return EIO; 247 args->flags = fcmp->fc_mntflags; 248 args->uid = fcmp->fc_uid; 249 args->gid = fcmp->fc_gid; 250 args->fspec = NULL; 251 *data_len = sizeof *args; 252 return 0; 253 } 254 255 if ((mp->mnt_flag & MNT_RDONLY) == 0) 256 return (EROFS); 257 258 if ((mp->mnt_flag & MNT_UPDATE) && args->fspec == NULL) 259 return EINVAL; 260 261 /* 262 * Not an update, or updating the name: look up the name 263 * and verify that it refers to a sensible block device. 264 */ 265 error = namei_simple_user(args->fspec, 266 NSM_FOLLOW_NOEMULROOT, &devvp); 267 if (error != 0) 268 return (error); 269 270 if (devvp->v_type != VBLK) { 271 vrele(devvp); 272 return ENOTBLK; 273 } 274 if (bdevsw_lookup(devvp->v_rdev) == NULL) { 275 vrele(devvp); 276 return ENXIO; 277 } 278 /* 279 * If mount by non-root, then verify that user has necessary 280 * permissions on the device. 281 */ 282 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 283 error = kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_MOUNT, 284 KAUTH_REQ_SYSTEM_MOUNT_DEVICE, mp, devvp, KAUTH_ARG(VREAD)); 285 VOP_UNLOCK(devvp); 286 if (error) { 287 vrele(devvp); 288 return (error); 289 } 290 if ((mp->mnt_flag & MNT_UPDATE) == 0) 291 error = filecore_mountfs(devvp, mp, l, args); 292 else { 293 if (devvp != fcmp->fc_devvp) 294 error = EINVAL; /* needs translation */ 295 else 296 vrele(devvp); 297 } 298 if (error) { 299 vrele(devvp); 300 return error; 301 } 302 fcmp = VFSTOFILECORE(mp); 303 return set_statvfs_info(path, UIO_USERSPACE, args->fspec, UIO_USERSPACE, 304 mp->mnt_op->vfs_name, mp, l); 305 } 306 307 /* 308 * Common code for mount and mountroot 309 */ 310 static int 311 filecore_mountfs(struct vnode *devvp, struct mount *mp, struct lwp *l, struct filecore_args *argp) 312 { 313 struct filecore_mnt *fcmp = (struct filecore_mnt *)0; 314 struct buf *bp = NULL; 315 dev_t dev = devvp->v_rdev; 316 int error = EINVAL; 317 int ronly = (mp->mnt_flag & MNT_RDONLY) != 0; 318 struct filecore_disc_record *fcdr; 319 unsigned map; 320 unsigned log2secsize; 321 322 if (!ronly) 323 return EROFS; 324 325 if ((error = vinvalbuf(devvp, V_SAVE, l->l_cred, l, 0, 0)) != 0) 326 return (error); 327 328 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 329 error = VOP_OPEN(devvp, ronly ? FREAD : FREAD|FWRITE, FSCRED); 330 VOP_UNLOCK(devvp); 331 if (error) 332 return error; 333 334 /* Read the filecore boot block to check FS validity and to find the map */ 335 error = bread(devvp, FILECORE_BOOTBLOCK_BLKN, 336 FILECORE_BOOTBLOCK_SIZE, NOCRED, 0, &bp); 337 #ifdef FILECORE_DEBUG_BR 338 printf("bread(%p, %x, %d, CRED, %p)=%d\n", devvp, 339 FILECORE_BOOTBLOCK_BLKN, FILECORE_BOOTBLOCK_SIZE, 340 bp, error); 341 #endif 342 if (error != 0) 343 goto out; 344 345 KASSERT(bp != NULL); 346 if (filecore_bbchecksum(bp->b_data) != 0) { 347 error = EINVAL; 348 goto out; 349 } 350 fcdr = (struct filecore_disc_record *)((char *)(bp->b_data) + 351 FILECORE_BB_DISCREC); 352 map = ((((8 << fcdr->log2secsize) - fcdr->zone_spare) 353 * (fcdr->nzones / 2) - 8 * FILECORE_DISCREC_SIZE) 354 << fcdr->log2bpmb) >> fcdr->log2secsize; 355 log2secsize = fcdr->log2secsize; 356 #ifdef FILECORE_DEBUG_BR 357 printf("brelse(%p) vf1\n", bp); 358 #endif 359 brelse(bp, BC_AGE); 360 bp = NULL; 361 362 /* Read the bootblock in the map */ 363 error = bread(devvp, map, 1 << log2secsize, NOCRED, 0, &bp); 364 #ifdef FILECORE_DEBUG_BR 365 printf("bread(%p, %x, %d, CRED, %p)=%d\n", devvp, 366 map, 1 << log2secsize, bp, error); 367 #endif 368 if (error != 0) 369 goto out; 370 fcdr = (struct filecore_disc_record *)((char *)(bp->b_data) + 4); 371 fcmp = kmem_zalloc(sizeof(*fcmp), KM_SLEEP); 372 if (fcdr->log2bpmb > fcdr->log2secsize) 373 fcmp->log2bsize = fcdr->log2bpmb; 374 else fcmp->log2bsize = fcdr->log2secsize; 375 fcmp->blksize = 1 << fcmp->log2bsize; 376 memcpy(&fcmp->drec, fcdr, sizeof(*fcdr)); 377 fcmp->map = map; 378 fcmp->idspz = ((8 << fcdr->log2secsize) - fcdr->zone_spare) 379 / (fcdr->idlen + 1); 380 fcmp->mask = (1 << fcdr->idlen) - 1; 381 if (fcdr->big_flag & 1) { 382 fcmp->nblks = ((((u_int64_t)fcdr->disc_size_2) << 32) 383 + fcdr->disc_size) / fcmp->blksize; 384 } else { 385 fcmp->nblks=fcdr->disc_size / fcmp->blksize; 386 } 387 388 #ifdef FILECORE_DEBUG_BR 389 printf("brelse(%p) vf2\n", bp); 390 #endif 391 brelse(bp, BC_AGE); 392 bp = NULL; 393 394 mp->mnt_data = fcmp; 395 mp->mnt_stat.f_fsidx.__fsid_val[0] = (long)dev; 396 mp->mnt_stat.f_fsidx.__fsid_val[1] = makefstype(MOUNT_FILECORE); 397 mp->mnt_stat.f_fsid = mp->mnt_stat.f_fsidx.__fsid_val[0]; 398 mp->mnt_stat.f_namemax = 10; 399 mp->mnt_flag |= MNT_LOCAL; 400 mp->mnt_dev_bshift = fcdr->log2secsize; 401 mp->mnt_fs_bshift = fcmp->log2bsize; 402 403 fcmp->fc_mountp = mp; 404 fcmp->fc_dev = dev; 405 fcmp->fc_devvp = devvp; 406 fcmp->fc_mntflags = argp->flags; 407 if (argp->flags & FILECOREMNT_USEUID) { 408 fcmp->fc_uid = kauth_cred_getuid(l->l_cred); 409 fcmp->fc_gid = kauth_cred_getgid(l->l_cred); 410 } else { 411 fcmp->fc_uid = argp->uid; 412 fcmp->fc_gid = argp->gid; 413 } 414 415 return 0; 416 out: 417 if (bp) { 418 #ifdef FILECORE_DEBUG_BR 419 printf("brelse(%p) vf3\n", bp); 420 #endif 421 brelse(bp, 0); 422 } 423 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 424 (void)VOP_CLOSE(devvp, ronly ? FREAD : FREAD|FWRITE, NOCRED); 425 VOP_UNLOCK(devvp); 426 return error; 427 } 428 429 /* 430 * Make a filesystem operational. 431 * Nothing to do at the moment. 432 */ 433 /* ARGSUSED */ 434 int 435 filecore_start(struct mount *mp, int flags) 436 { 437 return 0; 438 } 439 440 /* 441 * unmount system call 442 */ 443 int 444 filecore_unmount(struct mount *mp, int mntflags) 445 { 446 struct filecore_mnt *fcmp; 447 int error, flags = 0; 448 449 if (mntflags & MNT_FORCE) 450 flags |= FORCECLOSE; 451 if ((error = vflush(mp, NULLVP, flags)) != 0) 452 return (error); 453 454 fcmp = VFSTOFILECORE(mp); 455 456 if (fcmp->fc_devvp->v_type != VBAD) 457 spec_node_setmountedfs(fcmp->fc_devvp, NULL); 458 vn_lock(fcmp->fc_devvp, LK_EXCLUSIVE | LK_RETRY); 459 error = VOP_CLOSE(fcmp->fc_devvp, FREAD, NOCRED); 460 vput(fcmp->fc_devvp); 461 kmem_free(fcmp, sizeof(*fcmp)); 462 mp->mnt_data = NULL; 463 mp->mnt_flag &= ~MNT_LOCAL; 464 return (error); 465 } 466 467 /* 468 * Return root of a filesystem 469 */ 470 int 471 filecore_root(struct mount *mp, struct vnode **vpp) 472 { 473 struct vnode *nvp; 474 int error; 475 476 if ((error = VFS_VGET(mp, FILECORE_ROOTINO, &nvp)) != 0) 477 return (error); 478 *vpp = nvp; 479 return (0); 480 } 481 482 /* 483 * Get file system statistics. 484 */ 485 int 486 filecore_statvfs(struct mount *mp, struct statvfs *sbp) 487 { 488 struct filecore_mnt *fcmp = VFSTOFILECORE(mp); 489 490 sbp->f_bsize = fcmp->blksize; 491 sbp->f_frsize = sbp->f_bsize; /* XXX */ 492 sbp->f_iosize = sbp->f_bsize; /* XXX */ 493 sbp->f_blocks = fcmp->nblks; 494 sbp->f_bfree = 0; /* total free blocks */ 495 sbp->f_bavail = 0; /* blocks free for non superuser */ 496 sbp->f_bresvd = 0; /* reserved blocks */ 497 sbp->f_files = 0; /* total files */ 498 sbp->f_ffree = 0; /* free file nodes for non superuser */ 499 sbp->f_favail = 0; /* free file nodes */ 500 sbp->f_fresvd = 0; /* reserved file nodes */ 501 copy_statvfs_info(sbp, mp); 502 return 0; 503 } 504 505 /* ARGSUSED */ 506 int 507 filecore_sync(struct mount *mp, int waitfor, kauth_cred_t cred) 508 { 509 return (0); 510 } 511 512 /* 513 * File handle to vnode 514 * 515 * Have to be really careful about stale file handles: 516 * - check that the inode number is in range 517 * - call iget() to get the locked inode 518 * - check for an unallocated inode (i_mode == 0) 519 * - check that the generation number matches 520 */ 521 522 struct ifid { 523 ushort ifid_len; 524 ushort ifid_pad; 525 u_int32_t ifid_ino; 526 }; 527 528 /* ARGSUSED */ 529 int 530 filecore_fhtovp(struct mount *mp, struct fid *fhp, struct vnode **vpp) 531 { 532 struct ifid ifh; 533 struct vnode *nvp; 534 struct filecore_node *ip; 535 int error; 536 537 if (fhp->fid_len != sizeof(struct ifid)) 538 return EINVAL; 539 540 memcpy(&ifh, fhp, sizeof(ifh)); 541 if ((error = VFS_VGET(mp, ifh.ifid_ino, &nvp)) != 0) { 542 *vpp = NULLVP; 543 return (error); 544 } 545 ip = VTOI(nvp); 546 if (filecore_staleinode(ip)) { 547 vput(nvp); 548 *vpp = NULLVP; 549 return (ESTALE); 550 } 551 *vpp = nvp; 552 return (0); 553 } 554 555 /* This looks complicated. Look at other vgets as well as the iso9660 one. 556 * 557 * The filecore inode number is made up of 1 byte directory entry index and 558 * 3 bytes of the internal disc address of the directory. On a read-only 559 * filesystem this is unique. For a read-write version we may not be able to 560 * do vget, see msdosfs. 561 */ 562 563 int 564 filecore_vget(struct mount *mp, ino_t ino, struct vnode **vpp) 565 { 566 struct filecore_mnt *fcmp; 567 struct filecore_node *ip; 568 struct buf *bp; 569 struct vnode *vp; 570 dev_t dev; 571 int error; 572 573 fcmp = VFSTOFILECORE(mp); 574 dev = fcmp->fc_dev; 575 if ((*vpp = filecore_ihashget(dev, ino)) != NULLVP) 576 return (0); 577 578 /* Allocate a new vnode/filecore_node. */ 579 error = getnewvnode(VT_FILECORE, mp, filecore_vnodeop_p, NULL, &vp); 580 if (error) { 581 *vpp = NULLVP; 582 return (error); 583 } 584 ip = pool_get(&filecore_node_pool, PR_WAITOK); 585 memset(ip, 0, sizeof(struct filecore_node)); 586 vp->v_data = ip; 587 ip->i_vnode = vp; 588 ip->i_dev = dev; 589 ip->i_number = ino; 590 ip->i_block = -1; 591 ip->i_parent = -2; 592 genfs_node_init(vp, &filecore_genfsops); 593 594 /* 595 * Put it onto its hash chain and lock it so that other requests for 596 * this inode will block if they arrive while we are sleeping waiting 597 * for old data structures to be purged or for the contents of the 598 * disk portion of this inode to be read. 599 */ 600 filecore_ihashins(ip); 601 602 if (ino == FILECORE_ROOTINO) { 603 /* Here we need to construct a root directory inode */ 604 memcpy(ip->i_dirent.name, "root", 4); 605 ip->i_dirent.load = 0; 606 ip->i_dirent.exec = 0; 607 ip->i_dirent.len = FILECORE_DIR_SIZE; 608 ip->i_dirent.addr = fcmp->drec.root; 609 ip->i_dirent.attr = FILECORE_ATTR_DIR | FILECORE_ATTR_READ; 610 611 } else { 612 /* Read in Data from Directory Entry */ 613 if ((error = filecore_bread(fcmp, ino & FILECORE_INO_MASK, 614 FILECORE_DIR_SIZE, NOCRED, &bp)) != 0) { 615 vput(vp); 616 *vpp = NULL; 617 return (error); 618 } 619 620 memcpy(&ip->i_dirent, 621 fcdirentry(bp->b_data, ino >> FILECORE_INO_INDEX), 622 sizeof(struct filecore_direntry)); 623 #ifdef FILECORE_DEBUG_BR 624 printf("brelse(%p) vf5\n", bp); 625 #endif 626 brelse(bp, 0); 627 } 628 629 ip->i_mnt = fcmp; 630 ip->i_devvp = fcmp->fc_devvp; 631 ip->i_diroff = 0; 632 vref(ip->i_devvp); 633 634 /* 635 * Setup type 636 */ 637 vp->v_type = VREG; 638 if (ip->i_dirent.attr & FILECORE_ATTR_DIR) 639 vp->v_type = VDIR; 640 641 /* 642 * Initialize the associated vnode 643 */ 644 switch (vp->v_type) { 645 case VFIFO: 646 case VCHR: 647 case VBLK: 648 /* 649 * Devices not supported. 650 */ 651 vput(vp); 652 return (EOPNOTSUPP); 653 case VLNK: 654 case VNON: 655 case VSOCK: 656 case VDIR: 657 case VBAD: 658 case VREG: 659 break; 660 } 661 662 if (ino == FILECORE_ROOTINO) 663 vp->v_vflag |= VV_ROOT; 664 665 /* 666 * XXX need generation number? 667 */ 668 669 uvm_vnp_setsize(vp, ip->i_size); 670 *vpp = vp; 671 return (0); 672 } 673 674 /* 675 * Vnode pointer to File handle 676 */ 677 /* ARGSUSED */ 678 int 679 filecore_vptofh(struct vnode *vp, struct fid *fhp, size_t *fh_size) 680 { 681 struct filecore_node *ip = VTOI(vp); 682 struct ifid ifh; 683 684 if (*fh_size < sizeof(struct ifid)) { 685 *fh_size = sizeof(struct ifid); 686 return E2BIG; 687 } 688 memset(&ifh, 0, sizeof(ifh)); 689 ifh.ifid_len = sizeof(struct ifid); 690 ifh.ifid_ino = ip->i_number; 691 memcpy(fhp, &ifh, sizeof(ifh)); 692 return 0; 693 } 694
Indexes created Wed Oct 01 12:09:54 GMT 2025