filecore_vfsops.c revision 1.74
1 /* $NetBSD: filecore_vfsops.c,v 1.74 2014/02/25 18:30:10 pooka 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 1.74 2014/02/25 18:30:10 pooka 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, "filecore", 154 SYSCTL_DESCR("Acorn FILECORE file system"), 155 NULL, 0, NULL, 0, 156 CTL_VFS, 19, CTL_EOL); 157 /* 158 * XXX the "19" above could be dynamic, thereby eliminating 159 * one more instance of the "number to vfs" mapping problem, 160 * but "19" is the order as taken from sys/mount.h 161 */ 162 break; 163 case MODULE_CMD_FINI: 164 error = vfs_detach(&filecore_vfsops); 165 if (error != 0) 166 break; 167 sysctl_teardown(&filecore_sysctl_log); 168 break; 169 default: 170 error = ENOTTY; 171 break; 172 } 173 174 return (error); 175 } 176 177 /* 178 * Called by vfs_mountroot when iso is going to be mounted as root. 179 * 180 * Name is updated by mount(8) after booting. 181 */ 182 183 static int filecore_mountfs(struct vnode *devvp, struct mount *mp, 184 struct lwp *l, struct filecore_args *argp); 185 186 #if 0 187 int 188 filecore_mountroot(void) 189 { 190 struct mount *mp; 191 extern struct vnode *rootvp; 192 struct proc *p = curproc; /* XXX */ 193 int error; 194 struct filecore_args args; 195 196 if (device_class(root_device) != DV_DISK) 197 return (ENODEV); 198 199 /* 200 * Get vnodes for swapdev and rootdev. 201 */ 202 if (bdevvp(rootdev, &rootvp)) 203 panic("filecore_mountroot: can't setup rootvp"); 204 205 if ((error = vfs_rootmountalloc(MOUNT_FILECORE, "root_device", &mp)) != 0) 206 return (error); 207 208 args.flags = FILECOREMNT_ROOT; 209 if ((error = filecore_mountfs(rootvp, mp, p, &args)) != 0) { 210 vfs_unbusy(mp, false, NULL); 211 vfs_destroy(mp); 212 return (error); 213 } 214 mountlist_append(mp); 215 (void)filecore_statvfs(mp, &mp->mnt_stat, p); 216 vfs_unbusy(mp, false, NULL); 217 return (0); 218 } 219 #endif 220 221 /* 222 * VFS Operations. 223 * 224 * mount system call 225 */ 226 int 227 filecore_mount(struct mount *mp, const char *path, void *data, size_t *data_len) 228 { 229 struct lwp *l = curlwp; 230 struct vnode *devvp; 231 struct filecore_args *args = data; 232 int error; 233 struct filecore_mnt *fcmp = NULL; 234 235 if (*data_len < sizeof *args) 236 return EINVAL; 237 238 if (mp->mnt_flag & MNT_GETARGS) { 239 fcmp = VFSTOFILECORE(mp); 240 if (fcmp == NULL) 241 return EIO; 242 args->flags = fcmp->fc_mntflags; 243 args->uid = fcmp->fc_uid; 244 args->gid = fcmp->fc_gid; 245 args->fspec = NULL; 246 *data_len = sizeof *args; 247 return 0; 248 } 249 250 if ((mp->mnt_flag & MNT_RDONLY) == 0) 251 return (EROFS); 252 253 if ((mp->mnt_flag & MNT_UPDATE) && args->fspec == NULL) 254 return EINVAL; 255 256 /* 257 * Not an update, or updating the name: look up the name 258 * and verify that it refers to a sensible block device. 259 */ 260 error = namei_simple_user(args->fspec, 261 NSM_FOLLOW_NOEMULROOT, &devvp); 262 if (error != 0) 263 return (error); 264 265 if (devvp->v_type != VBLK) { 266 vrele(devvp); 267 return ENOTBLK; 268 } 269 if (bdevsw_lookup(devvp->v_rdev) == NULL) { 270 vrele(devvp); 271 return ENXIO; 272 } 273 /* 274 * If mount by non-root, then verify that user has necessary 275 * permissions on the device. 276 */ 277 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 278 error = kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_MOUNT, 279 KAUTH_REQ_SYSTEM_MOUNT_DEVICE, mp, devvp, KAUTH_ARG(VREAD)); 280 VOP_UNLOCK(devvp); 281 if (error) { 282 vrele(devvp); 283 return (error); 284 } 285 if ((mp->mnt_flag & MNT_UPDATE) == 0) 286 error = filecore_mountfs(devvp, mp, l, args); 287 else { 288 fcmp = VFSTOFILECORE(mp); 289 if (devvp != fcmp->fc_devvp) 290 error = EINVAL; /* needs translation */ 291 else 292 vrele(devvp); 293 } 294 if (error) { 295 vrele(devvp); 296 return error; 297 } 298 fcmp = VFSTOFILECORE(mp); 299 return set_statvfs_info(path, UIO_USERSPACE, args->fspec, UIO_USERSPACE, 300 mp->mnt_op->vfs_name, mp, l); 301 } 302 303 /* 304 * Common code for mount and mountroot 305 */ 306 static int 307 filecore_mountfs(struct vnode *devvp, struct mount *mp, struct lwp *l, struct filecore_args *argp) 308 { 309 struct filecore_mnt *fcmp = (struct filecore_mnt *)0; 310 struct buf *bp = NULL; 311 dev_t dev = devvp->v_rdev; 312 int error = EINVAL; 313 int ronly = (mp->mnt_flag & MNT_RDONLY) != 0; 314 struct filecore_disc_record *fcdr; 315 unsigned map; 316 unsigned log2secsize; 317 318 if (!ronly) 319 return EROFS; 320 321 if ((error = vinvalbuf(devvp, V_SAVE, l->l_cred, l, 0, 0)) != 0) 322 return (error); 323 324 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 325 error = VOP_OPEN(devvp, ronly ? FREAD : FREAD|FWRITE, FSCRED); 326 VOP_UNLOCK(devvp); 327 if (error) 328 return error; 329 330 /* Read the filecore boot block to check FS validity and to find the map */ 331 error = bread(devvp, FILECORE_BOOTBLOCK_BLKN, 332 FILECORE_BOOTBLOCK_SIZE, NOCRED, 0, &bp); 333 #ifdef FILECORE_DEBUG_BR 334 printf("bread(%p, %x, %d, CRED, %p)=%d\n", devvp, 335 FILECORE_BOOTBLOCK_BLKN, FILECORE_BOOTBLOCK_SIZE, 336 bp, error); 337 #endif 338 if (error != 0) 339 goto out; 340 341 KASSERT(bp != NULL); 342 if (filecore_bbchecksum(bp->b_data) != 0) { 343 error = EINVAL; 344 goto out; 345 } 346 fcdr = (struct filecore_disc_record *)((char *)(bp->b_data) + 347 FILECORE_BB_DISCREC); 348 map = ((((8 << fcdr->log2secsize) - fcdr->zone_spare) 349 * (fcdr->nzones / 2) - 8 * FILECORE_DISCREC_SIZE) 350 << fcdr->log2bpmb) >> fcdr->log2secsize; 351 log2secsize = fcdr->log2secsize; 352 #ifdef FILECORE_DEBUG_BR 353 printf("brelse(%p) vf1\n", bp); 354 #endif 355 brelse(bp, BC_AGE); 356 bp = NULL; 357 358 /* Read the bootblock in the map */ 359 error = bread(devvp, map, 1 << log2secsize, NOCRED, 0, &bp); 360 #ifdef FILECORE_DEBUG_BR 361 printf("bread(%p, %x, %d, CRED, %p)=%d\n", devvp, 362 map, 1 << log2secsize, bp, error); 363 #endif 364 if (error != 0) 365 goto out; 366 fcdr = (struct filecore_disc_record *)((char *)(bp->b_data) + 4); 367 fcmp = kmem_zalloc(sizeof(*fcmp), KM_SLEEP); 368 if (fcdr->log2bpmb > fcdr->log2secsize) 369 fcmp->log2bsize = fcdr->log2bpmb; 370 else fcmp->log2bsize = fcdr->log2secsize; 371 fcmp->blksize = 1 << fcmp->log2bsize; 372 memcpy(&fcmp->drec, fcdr, sizeof(*fcdr)); 373 fcmp->map = map; 374 fcmp->idspz = ((8 << fcdr->log2secsize) - fcdr->zone_spare) 375 / (fcdr->idlen + 1); 376 fcmp->mask = (1 << fcdr->idlen) - 1; 377 if (fcdr->big_flag & 1) { 378 fcmp->nblks = ((((u_int64_t)fcdr->disc_size_2) << 32) 379 + fcdr->disc_size) / fcmp->blksize; 380 } else { 381 fcmp->nblks=fcdr->disc_size / fcmp->blksize; 382 } 383 384 #ifdef FILECORE_DEBUG_BR 385 printf("brelse(%p) vf2\n", bp); 386 #endif 387 brelse(bp, BC_AGE); 388 bp = NULL; 389 390 mp->mnt_data = fcmp; 391 mp->mnt_stat.f_fsidx.__fsid_val[0] = (long)dev; 392 mp->mnt_stat.f_fsidx.__fsid_val[1] = makefstype(MOUNT_FILECORE); 393 mp->mnt_stat.f_fsid = mp->mnt_stat.f_fsidx.__fsid_val[0]; 394 mp->mnt_stat.f_namemax = 10; 395 mp->mnt_flag |= MNT_LOCAL; 396 mp->mnt_dev_bshift = fcdr->log2secsize; 397 mp->mnt_fs_bshift = fcmp->log2bsize; 398 399 fcmp->fc_mountp = mp; 400 fcmp->fc_dev = dev; 401 fcmp->fc_devvp = devvp; 402 fcmp->fc_mntflags = argp->flags; 403 if (argp->flags & FILECOREMNT_USEUID) { 404 fcmp->fc_uid = kauth_cred_getuid(l->l_cred); 405 fcmp->fc_gid = kauth_cred_getgid(l->l_cred); 406 } else { 407 fcmp->fc_uid = argp->uid; 408 fcmp->fc_gid = argp->gid; 409 } 410 411 return 0; 412 out: 413 if (bp) { 414 #ifdef FILECORE_DEBUG_BR 415 printf("brelse(%p) vf3\n", bp); 416 #endif 417 brelse(bp, 0); 418 } 419 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 420 (void)VOP_CLOSE(devvp, ronly ? FREAD : FREAD|FWRITE, NOCRED); 421 VOP_UNLOCK(devvp); 422 return error; 423 } 424 425 /* 426 * Make a filesystem operational. 427 * Nothing to do at the moment. 428 */ 429 /* ARGSUSED */ 430 int 431 filecore_start(struct mount *mp, int flags) 432 { 433 return 0; 434 } 435 436 /* 437 * unmount system call 438 */ 439 int 440 filecore_unmount(struct mount *mp, int mntflags) 441 { 442 struct filecore_mnt *fcmp; 443 int error, flags = 0; 444 445 if (mntflags & MNT_FORCE) 446 flags |= FORCECLOSE; 447 if ((error = vflush(mp, NULLVP, flags)) != 0) 448 return (error); 449 450 fcmp = VFSTOFILECORE(mp); 451 452 if (fcmp->fc_devvp->v_type != VBAD) 453 spec_node_setmountedfs(fcmp->fc_devvp, NULL); 454 vn_lock(fcmp->fc_devvp, LK_EXCLUSIVE | LK_RETRY); 455 error = VOP_CLOSE(fcmp->fc_devvp, FREAD, NOCRED); 456 vput(fcmp->fc_devvp); 457 kmem_free(fcmp, sizeof(*fcmp)); 458 mp->mnt_data = NULL; 459 mp->mnt_flag &= ~MNT_LOCAL; 460 return (error); 461 } 462 463 /* 464 * Return root of a filesystem 465 */ 466 int 467 filecore_root(struct mount *mp, struct vnode **vpp) 468 { 469 struct vnode *nvp; 470 int error; 471 472 if ((error = VFS_VGET(mp, FILECORE_ROOTINO, &nvp)) != 0) 473 return (error); 474 *vpp = nvp; 475 return (0); 476 } 477 478 /* 479 * Get file system statistics. 480 */ 481 int 482 filecore_statvfs(struct mount *mp, struct statvfs *sbp) 483 { 484 struct filecore_mnt *fcmp = VFSTOFILECORE(mp); 485 486 sbp->f_bsize = fcmp->blksize; 487 sbp->f_frsize = sbp->f_bsize; /* XXX */ 488 sbp->f_iosize = sbp->f_bsize; /* XXX */ 489 sbp->f_blocks = fcmp->nblks; 490 sbp->f_bfree = 0; /* total free blocks */ 491 sbp->f_bavail = 0; /* blocks free for non superuser */ 492 sbp->f_bresvd = 0; /* reserved blocks */ 493 sbp->f_files = 0; /* total files */ 494 sbp->f_ffree = 0; /* free file nodes for non superuser */ 495 sbp->f_favail = 0; /* free file nodes */ 496 sbp->f_fresvd = 0; /* reserved file nodes */ 497 copy_statvfs_info(sbp, mp); 498 return 0; 499 } 500 501 /* ARGSUSED */ 502 int 503 filecore_sync(struct mount *mp, int waitfor, kauth_cred_t cred) 504 { 505 return (0); 506 } 507 508 /* 509 * File handle to vnode 510 * 511 * Have to be really careful about stale file handles: 512 * - check that the inode number is in range 513 * - call iget() to get the locked inode 514 * - check for an unallocated inode (i_mode == 0) 515 * - check that the generation number matches 516 */ 517 518 struct ifid { 519 ushort ifid_len; 520 ushort ifid_pad; 521 u_int32_t ifid_ino; 522 }; 523 524 /* ARGSUSED */ 525 int 526 filecore_fhtovp(struct mount *mp, struct fid *fhp, struct vnode **vpp) 527 { 528 struct ifid ifh; 529 struct vnode *nvp; 530 struct filecore_node *ip; 531 int error; 532 533 if (fhp->fid_len != sizeof(struct ifid)) 534 return EINVAL; 535 536 memcpy(&ifh, fhp, sizeof(ifh)); 537 if ((error = VFS_VGET(mp, ifh.ifid_ino, &nvp)) != 0) { 538 *vpp = NULLVP; 539 return (error); 540 } 541 ip = VTOI(nvp); 542 if (filecore_staleinode(ip)) { 543 vput(nvp); 544 *vpp = NULLVP; 545 return (ESTALE); 546 } 547 *vpp = nvp; 548 return (0); 549 } 550 551 /* This looks complicated. Look at other vgets as well as the iso9660 one. 552 * 553 * The filecore inode number is made up of 1 byte directory entry index and 554 * 3 bytes of the internal disc address of the directory. On a read-only 555 * filesystem this is unique. For a read-write version we may not be able to 556 * do vget, see msdosfs. 557 */ 558 559 int 560 filecore_vget(struct mount *mp, ino_t ino, struct vnode **vpp) 561 { 562 struct filecore_mnt *fcmp; 563 struct filecore_node *ip; 564 struct buf *bp; 565 struct vnode *vp; 566 dev_t dev; 567 int error; 568 569 fcmp = VFSTOFILECORE(mp); 570 dev = fcmp->fc_dev; 571 if ((*vpp = filecore_ihashget(dev, ino)) != NULLVP) 572 return (0); 573 574 /* Allocate a new vnode/filecore_node. */ 575 error = getnewvnode(VT_FILECORE, mp, filecore_vnodeop_p, NULL, &vp); 576 if (error) { 577 *vpp = NULLVP; 578 return (error); 579 } 580 ip = pool_get(&filecore_node_pool, PR_WAITOK); 581 memset(ip, 0, sizeof(struct filecore_node)); 582 vp->v_data = ip; 583 ip->i_vnode = vp; 584 ip->i_dev = dev; 585 ip->i_number = ino; 586 ip->i_block = -1; 587 ip->i_parent = -2; 588 genfs_node_init(vp, &filecore_genfsops); 589 590 /* 591 * Put it onto its hash chain and lock it so that other requests for 592 * this inode will block if they arrive while we are sleeping waiting 593 * for old data structures to be purged or for the contents of the 594 * disk portion of this inode to be read. 595 */ 596 filecore_ihashins(ip); 597 598 if (ino == FILECORE_ROOTINO) { 599 /* Here we need to construct a root directory inode */ 600 memcpy(ip->i_dirent.name, "root", 4); 601 ip->i_dirent.load = 0; 602 ip->i_dirent.exec = 0; 603 ip->i_dirent.len = FILECORE_DIR_SIZE; 604 ip->i_dirent.addr = fcmp->drec.root; 605 ip->i_dirent.attr = FILECORE_ATTR_DIR | FILECORE_ATTR_READ; 606 607 } else { 608 /* Read in Data from Directory Entry */ 609 if ((error = filecore_bread(fcmp, ino & FILECORE_INO_MASK, 610 FILECORE_DIR_SIZE, NOCRED, &bp)) != 0) { 611 vput(vp); 612 *vpp = NULL; 613 return (error); 614 } 615 616 memcpy(&ip->i_dirent, 617 fcdirentry(bp->b_data, ino >> FILECORE_INO_INDEX), 618 sizeof(struct filecore_direntry)); 619 #ifdef FILECORE_DEBUG_BR 620 printf("brelse(%p) vf5\n", bp); 621 #endif 622 brelse(bp, 0); 623 } 624 625 ip->i_mnt = fcmp; 626 ip->i_devvp = fcmp->fc_devvp; 627 ip->i_diroff = 0; 628 vref(ip->i_devvp); 629 630 /* 631 * Setup type 632 */ 633 vp->v_type = VREG; 634 if (ip->i_dirent.attr & FILECORE_ATTR_DIR) 635 vp->v_type = VDIR; 636 637 /* 638 * Initialize the associated vnode 639 */ 640 switch (vp->v_type) { 641 case VFIFO: 642 case VCHR: 643 case VBLK: 644 /* 645 * Devices not supported. 646 */ 647 vput(vp); 648 return (EOPNOTSUPP); 649 case VLNK: 650 case VNON: 651 case VSOCK: 652 case VDIR: 653 case VBAD: 654 case VREG: 655 break; 656 } 657 658 if (ino == FILECORE_ROOTINO) 659 vp->v_vflag |= VV_ROOT; 660 661 /* 662 * XXX need generation number? 663 */ 664 665 uvm_vnp_setsize(vp, ip->i_size); 666 *vpp = vp; 667 return (0); 668 } 669 670 /* 671 * Vnode pointer to File handle 672 */ 673 /* ARGSUSED */ 674 int 675 filecore_vptofh(struct vnode *vp, struct fid *fhp, size_t *fh_size) 676 { 677 struct filecore_node *ip = VTOI(vp); 678 struct ifid ifh; 679 680 if (*fh_size < sizeof(struct ifid)) { 681 *fh_size = sizeof(struct ifid); 682 return E2BIG; 683 } 684 memset(&ifh, 0, sizeof(ifh)); 685 ifh.ifid_len = sizeof(struct ifid); 686 ifh.ifid_ino = ip->i_number; 687 memcpy(fhp, &ifh, sizeof(ifh)); 688 return 0; 689 } 690
Indexes created Wed Oct 01 12:09:54 GMT 2025