filecore_vfsops.c revision 1.70
1 /* $NetBSD: filecore_vfsops.c,v 1.70 2012/12/20 08:03:42 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 1.70 2012/12/20 08:03:42 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/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 mutex_enter(&mountlist_lock); 220 CIRCLEQ_INSERT_TAIL(&mountlist, mp, mnt_list); 221 mutex_exit(&mountlist_lock); 222 (void)filecore_statvfs(mp, &mp->mnt_stat, p); 223 vfs_unbusy(mp, false, NULL); 224 return (0); 225 } 226 #endif 227 228 /* 229 * VFS Operations. 230 * 231 * mount system call 232 */ 233 int 234 filecore_mount(struct mount *mp, const char *path, void *data, size_t *data_len) 235 { 236 struct lwp *l = curlwp; 237 struct vnode *devvp; 238 struct filecore_args *args = data; 239 int error; 240 struct filecore_mnt *fcmp = NULL; 241 242 if (*data_len < sizeof *args) 243 return EINVAL; 244 245 if (mp->mnt_flag & MNT_GETARGS) { 246 fcmp = VFSTOFILECORE(mp); 247 if (fcmp == NULL) 248 return EIO; 249 args->flags = fcmp->fc_mntflags; 250 args->uid = fcmp->fc_uid; 251 args->gid = fcmp->fc_gid; 252 args->fspec = NULL; 253 *data_len = sizeof *args; 254 return 0; 255 } 256 257 if ((mp->mnt_flag & MNT_RDONLY) == 0) 258 return (EROFS); 259 260 if ((mp->mnt_flag & MNT_UPDATE) && args->fspec == NULL) 261 return EINVAL; 262 263 /* 264 * Not an update, or updating the name: look up the name 265 * and verify that it refers to a sensible block device. 266 */ 267 error = namei_simple_user(args->fspec, 268 NSM_FOLLOW_NOEMULROOT, &devvp); 269 if (error != 0) 270 return (error); 271 272 if (devvp->v_type != VBLK) { 273 vrele(devvp); 274 return ENOTBLK; 275 } 276 if (bdevsw_lookup(devvp->v_rdev) == NULL) { 277 vrele(devvp); 278 return ENXIO; 279 } 280 /* 281 * If mount by non-root, then verify that user has necessary 282 * permissions on the device. 283 */ 284 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 285 error = kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_MOUNT, 286 KAUTH_REQ_SYSTEM_MOUNT_DEVICE, mp, devvp, KAUTH_ARG(VREAD)); 287 VOP_UNLOCK(devvp); 288 if (error) { 289 vrele(devvp); 290 return (error); 291 } 292 if ((mp->mnt_flag & MNT_UPDATE) == 0) 293 error = filecore_mountfs(devvp, mp, l, args); 294 else { 295 if (devvp != fcmp->fc_devvp) 296 error = EINVAL; /* needs translation */ 297 else 298 vrele(devvp); 299 } 300 if (error) { 301 vrele(devvp); 302 return error; 303 } 304 fcmp = VFSTOFILECORE(mp); 305 return set_statvfs_info(path, UIO_USERSPACE, args->fspec, UIO_USERSPACE, 306 mp->mnt_op->vfs_name, mp, l); 307 } 308 309 /* 310 * Common code for mount and mountroot 311 */ 312 static int 313 filecore_mountfs(struct vnode *devvp, struct mount *mp, struct lwp *l, struct filecore_args *argp) 314 { 315 struct filecore_mnt *fcmp = (struct filecore_mnt *)0; 316 struct buf *bp = NULL; 317 dev_t dev = devvp->v_rdev; 318 int error = EINVAL; 319 int ronly = (mp->mnt_flag & MNT_RDONLY) != 0; 320 struct filecore_disc_record *fcdr; 321 unsigned map; 322 unsigned log2secsize; 323 324 if (!ronly) 325 return EROFS; 326 327 if ((error = vinvalbuf(devvp, V_SAVE, l->l_cred, l, 0, 0)) != 0) 328 return (error); 329 330 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 331 error = VOP_OPEN(devvp, ronly ? FREAD : FREAD|FWRITE, FSCRED); 332 VOP_UNLOCK(devvp); 333 if (error) 334 return error; 335 336 /* Read the filecore boot block to check FS validity and to find the map */ 337 error = bread(devvp, FILECORE_BOOTBLOCK_BLKN, 338 FILECORE_BOOTBLOCK_SIZE, NOCRED, 0, &bp); 339 #ifdef FILECORE_DEBUG_BR 340 printf("bread(%p, %x, %d, CRED, %p)=%d\n", devvp, 341 FILECORE_BOOTBLOCK_BLKN, FILECORE_BOOTBLOCK_SIZE, 342 bp, error); 343 #endif 344 if (error != 0) 345 goto out; 346 347 KASSERT(bp != NULL); 348 if (filecore_bbchecksum(bp->b_data) != 0) { 349 error = EINVAL; 350 goto out; 351 } 352 fcdr = (struct filecore_disc_record *)((char *)(bp->b_data) + 353 FILECORE_BB_DISCREC); 354 map = ((((8 << fcdr->log2secsize) - fcdr->zone_spare) 355 * (fcdr->nzones / 2) - 8 * FILECORE_DISCREC_SIZE) 356 << fcdr->log2bpmb) >> fcdr->log2secsize; 357 log2secsize = fcdr->log2secsize; 358 #ifdef FILECORE_DEBUG_BR 359 printf("brelse(%p) vf1\n", bp); 360 #endif 361 brelse(bp, BC_AGE); 362 bp = NULL; 363 364 /* Read the bootblock in the map */ 365 error = bread(devvp, map, 1 << log2secsize, NOCRED, 0, &bp); 366 #ifdef FILECORE_DEBUG_BR 367 printf("bread(%p, %x, %d, CRED, %p)=%d\n", devvp, 368 map, 1 << log2secsize, bp, error); 369 #endif 370 if (error != 0) 371 goto out; 372 fcdr = (struct filecore_disc_record *)((char *)(bp->b_data) + 4); 373 fcmp = kmem_zalloc(sizeof(*fcmp), KM_SLEEP); 374 if (fcdr->log2bpmb > fcdr->log2secsize) 375 fcmp->log2bsize = fcdr->log2bpmb; 376 else fcmp->log2bsize = fcdr->log2secsize; 377 fcmp->blksize = 1 << fcmp->log2bsize; 378 memcpy(&fcmp->drec, fcdr, sizeof(*fcdr)); 379 fcmp->map = map; 380 fcmp->idspz = ((8 << fcdr->log2secsize) - fcdr->zone_spare) 381 / (fcdr->idlen + 1); 382 fcmp->mask = (1 << fcdr->idlen) - 1; 383 if (fcdr->big_flag & 1) { 384 fcmp->nblks = ((((u_int64_t)fcdr->disc_size_2) << 32) 385 + fcdr->disc_size) / fcmp->blksize; 386 } else { 387 fcmp->nblks=fcdr->disc_size / fcmp->blksize; 388 } 389 390 #ifdef FILECORE_DEBUG_BR 391 printf("brelse(%p) vf2\n", bp); 392 #endif 393 brelse(bp, BC_AGE); 394 bp = NULL; 395 396 mp->mnt_data = fcmp; 397 mp->mnt_stat.f_fsidx.__fsid_val[0] = (long)dev; 398 mp->mnt_stat.f_fsidx.__fsid_val[1] = makefstype(MOUNT_FILECORE); 399 mp->mnt_stat.f_fsid = mp->mnt_stat.f_fsidx.__fsid_val[0]; 400 mp->mnt_stat.f_namemax = 10; 401 mp->mnt_flag |= MNT_LOCAL; 402 mp->mnt_dev_bshift = fcdr->log2secsize; 403 mp->mnt_fs_bshift = fcmp->log2bsize; 404 405 fcmp->fc_mountp = mp; 406 fcmp->fc_dev = dev; 407 fcmp->fc_devvp = devvp; 408 fcmp->fc_mntflags = argp->flags; 409 if (argp->flags & FILECOREMNT_USEUID) { 410 fcmp->fc_uid = kauth_cred_getuid(l->l_cred); 411 fcmp->fc_gid = kauth_cred_getgid(l->l_cred); 412 } else { 413 fcmp->fc_uid = argp->uid; 414 fcmp->fc_gid = argp->gid; 415 } 416 417 return 0; 418 out: 419 if (bp) { 420 #ifdef FILECORE_DEBUG_BR 421 printf("brelse(%p) vf3\n", bp); 422 #endif 423 brelse(bp, 0); 424 } 425 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 426 (void)VOP_CLOSE(devvp, ronly ? FREAD : FREAD|FWRITE, NOCRED); 427 VOP_UNLOCK(devvp); 428 return error; 429 } 430 431 /* 432 * Make a filesystem operational. 433 * Nothing to do at the moment. 434 */ 435 /* ARGSUSED */ 436 int 437 filecore_start(struct mount *mp, int flags) 438 { 439 return 0; 440 } 441 442 /* 443 * unmount system call 444 */ 445 int 446 filecore_unmount(struct mount *mp, int mntflags) 447 { 448 struct filecore_mnt *fcmp; 449 int error, flags = 0; 450 451 if (mntflags & MNT_FORCE) 452 flags |= FORCECLOSE; 453 if ((error = vflush(mp, NULLVP, flags)) != 0) 454 return (error); 455 456 fcmp = VFSTOFILECORE(mp); 457 458 if (fcmp->fc_devvp->v_type != VBAD) 459 fcmp->fc_devvp->v_specmountpoint = NULL; 460 vn_lock(fcmp->fc_devvp, LK_EXCLUSIVE | LK_RETRY); 461 error = VOP_CLOSE(fcmp->fc_devvp, FREAD, NOCRED); 462 vput(fcmp->fc_devvp); 463 kmem_free(fcmp, sizeof(*fcmp)); 464 mp->mnt_data = NULL; 465 mp->mnt_flag &= ~MNT_LOCAL; 466 return (error); 467 } 468 469 /* 470 * Return root of a filesystem 471 */ 472 int 473 filecore_root(struct mount *mp, struct vnode **vpp) 474 { 475 struct vnode *nvp; 476 int error; 477 478 if ((error = VFS_VGET(mp, FILECORE_ROOTINO, &nvp)) != 0) 479 return (error); 480 *vpp = nvp; 481 return (0); 482 } 483 484 /* 485 * Get file system statistics. 486 */ 487 int 488 filecore_statvfs(struct mount *mp, struct statvfs *sbp) 489 { 490 struct filecore_mnt *fcmp = VFSTOFILECORE(mp); 491 492 sbp->f_bsize = fcmp->blksize; 493 sbp->f_frsize = sbp->f_bsize; /* XXX */ 494 sbp->f_iosize = sbp->f_bsize; /* XXX */ 495 sbp->f_blocks = fcmp->nblks; 496 sbp->f_bfree = 0; /* total free blocks */ 497 sbp->f_bavail = 0; /* blocks free for non superuser */ 498 sbp->f_bresvd = 0; /* reserved blocks */ 499 sbp->f_files = 0; /* total files */ 500 sbp->f_ffree = 0; /* free file nodes for non superuser */ 501 sbp->f_favail = 0; /* free file nodes */ 502 sbp->f_fresvd = 0; /* reserved file nodes */ 503 copy_statvfs_info(sbp, mp); 504 return 0; 505 } 506 507 /* ARGSUSED */ 508 int 509 filecore_sync(struct mount *mp, int waitfor, kauth_cred_t cred) 510 { 511 return (0); 512 } 513 514 /* 515 * File handle to vnode 516 * 517 * Have to be really careful about stale file handles: 518 * - check that the inode number is in range 519 * - call iget() to get the locked inode 520 * - check for an unallocated inode (i_mode == 0) 521 * - check that the generation number matches 522 */ 523 524 struct ifid { 525 ushort ifid_len; 526 ushort ifid_pad; 527 u_int32_t ifid_ino; 528 }; 529 530 /* ARGSUSED */ 531 int 532 filecore_fhtovp(struct mount *mp, struct fid *fhp, struct vnode **vpp) 533 { 534 struct ifid ifh; 535 struct vnode *nvp; 536 struct filecore_node *ip; 537 int error; 538 539 if (fhp->fid_len != sizeof(struct ifid)) 540 return EINVAL; 541 542 memcpy(&ifh, fhp, sizeof(ifh)); 543 if ((error = VFS_VGET(mp, ifh.ifid_ino, &nvp)) != 0) { 544 *vpp = NULLVP; 545 return (error); 546 } 547 ip = VTOI(nvp); 548 if (filecore_staleinode(ip)) { 549 vput(nvp); 550 *vpp = NULLVP; 551 return (ESTALE); 552 } 553 *vpp = nvp; 554 return (0); 555 } 556 557 /* This looks complicated. Look at other vgets as well as the iso9660 one. 558 * 559 * The filecore inode number is made up of 1 byte directory entry index and 560 * 3 bytes of the internal disc address of the directory. On a read-only 561 * filesystem this is unique. For a read-write version we may not be able to 562 * do vget, see msdosfs. 563 */ 564 565 int 566 filecore_vget(struct mount *mp, ino_t ino, struct vnode **vpp) 567 { 568 struct filecore_mnt *fcmp; 569 struct filecore_node *ip; 570 struct buf *bp; 571 struct vnode *vp; 572 dev_t dev; 573 int error; 574 575 fcmp = VFSTOFILECORE(mp); 576 dev = fcmp->fc_dev; 577 if ((*vpp = filecore_ihashget(dev, ino)) != NULLVP) 578 return (0); 579 580 /* Allocate a new vnode/filecore_node. */ 581 error = getnewvnode(VT_FILECORE, mp, filecore_vnodeop_p, NULL, &vp); 582 if (error) { 583 *vpp = NULLVP; 584 return (error); 585 } 586 ip = pool_get(&filecore_node_pool, PR_WAITOK); 587 memset(ip, 0, sizeof(struct filecore_node)); 588 vp->v_data = ip; 589 ip->i_vnode = vp; 590 ip->i_dev = dev; 591 ip->i_number = ino; 592 ip->i_block = -1; 593 ip->i_parent = -2; 594 genfs_node_init(vp, &filecore_genfsops); 595 596 /* 597 * Put it onto its hash chain and lock it so that other requests for 598 * this inode will block if they arrive while we are sleeping waiting 599 * for old data structures to be purged or for the contents of the 600 * disk portion of this inode to be read. 601 */ 602 filecore_ihashins(ip); 603 604 if (ino == FILECORE_ROOTINO) { 605 /* Here we need to construct a root directory inode */ 606 memcpy(ip->i_dirent.name, "root", 4); 607 ip->i_dirent.load = 0; 608 ip->i_dirent.exec = 0; 609 ip->i_dirent.len = FILECORE_DIR_SIZE; 610 ip->i_dirent.addr = fcmp->drec.root; 611 ip->i_dirent.attr = FILECORE_ATTR_DIR | FILECORE_ATTR_READ; 612 613 } else { 614 /* Read in Data from Directory Entry */ 615 if ((error = filecore_bread(fcmp, ino & FILECORE_INO_MASK, 616 FILECORE_DIR_SIZE, NOCRED, &bp)) != 0) { 617 vput(vp); 618 *vpp = NULL; 619 return (error); 620 } 621 622 memcpy(&ip->i_dirent, 623 fcdirentry(bp->b_data, ino >> FILECORE_INO_INDEX), 624 sizeof(struct filecore_direntry)); 625 #ifdef FILECORE_DEBUG_BR 626 printf("brelse(%p) vf5\n", bp); 627 #endif 628 brelse(bp, 0); 629 } 630 631 ip->i_mnt = fcmp; 632 ip->i_devvp = fcmp->fc_devvp; 633 ip->i_diroff = 0; 634 vref(ip->i_devvp); 635 636 /* 637 * Setup type 638 */ 639 vp->v_type = VREG; 640 if (ip->i_dirent.attr & FILECORE_ATTR_DIR) 641 vp->v_type = VDIR; 642 643 /* 644 * Initialize the associated vnode 645 */ 646 switch (vp->v_type) { 647 case VFIFO: 648 case VCHR: 649 case VBLK: 650 /* 651 * Devices not supported. 652 */ 653 vput(vp); 654 return (EOPNOTSUPP); 655 case VLNK: 656 case VNON: 657 case VSOCK: 658 case VDIR: 659 case VBAD: 660 case VREG: 661 break; 662 } 663 664 if (ino == FILECORE_ROOTINO) 665 vp->v_vflag |= VV_ROOT; 666 667 /* 668 * XXX need generation number? 669 */ 670 671 uvm_vnp_setsize(vp, ip->i_size); 672 *vpp = vp; 673 return (0); 674 } 675 676 /* 677 * Vnode pointer to File handle 678 */ 679 /* ARGSUSED */ 680 int 681 filecore_vptofh(struct vnode *vp, struct fid *fhp, size_t *fh_size) 682 { 683 struct filecore_node *ip = VTOI(vp); 684 struct ifid ifh; 685 686 if (*fh_size < sizeof(struct ifid)) { 687 *fh_size = sizeof(struct ifid); 688 return E2BIG; 689 } 690 memset(&ifh, 0, sizeof(ifh)); 691 ifh.ifid_len = sizeof(struct ifid); 692 ifh.ifid_ino = ip->i_number; 693 memcpy(fhp, &ifh, sizeof(ifh)); 694 return 0; 695 } 696
Indexes created Wed Oct 01 12:09:54 GMT 2025