filecore_vfsops.c revision 1.51
1 /* $NetBSD: filecore_vfsops.c,v 1.51 2008/04/30 12:49:16 ad 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 1.51 2008/04/30 12:49:16 ad 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 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 MALLOC_JUSTDEFINE(M_FILECOREMNT, 99 "filecore mount", "Filecore FS mount structures"); 100 MALLOC_JUSTDEFINE(M_FILECORETMP, 101 "filecore temp", "Filecore FS temporary structures"); 102 103 extern const struct vnodeopv_desc filecore_vnodeop_opv_desc; 104 105 const struct vnodeopv_desc * const filecore_vnodeopv_descs[] = { 106 &filecore_vnodeop_opv_desc, 107 NULL, 108 }; 109 110 struct vfsops filecore_vfsops = { 111 MOUNT_FILECORE, 112 sizeof (struct filecore_args), 113 filecore_mount, 114 filecore_start, 115 filecore_unmount, 116 filecore_root, 117 (void *)eopnotsupp, /* vfs_quotactl */ 118 filecore_statvfs, 119 filecore_sync, 120 filecore_vget, 121 filecore_fhtovp, 122 filecore_vptofh, 123 filecore_init, 124 filecore_reinit, 125 filecore_done, 126 NULL, /* filecore_mountroot */ 127 (int (*)(struct mount *, struct vnode *, struct timespec *)) eopnotsupp, 128 vfs_stdextattrctl, 129 (void *)eopnotsupp, /* vfs_suspendctl */ 130 genfs_renamelock_enter, 131 genfs_renamelock_exit, 132 (void *)eopnotsupp, 133 filecore_vnodeopv_descs, 134 0, 135 { NULL, NULL } 136 }; 137 VFS_ATTACH(filecore_vfsops); 138 139 static const struct genfs_ops filecore_genfsops = { 140 .gop_size = genfs_size, 141 }; 142 143 /* 144 * Called by vfs_mountroot when iso is going to be mounted as root. 145 * 146 * Name is updated by mount(8) after booting. 147 */ 148 149 static int filecore_mountfs __P((struct vnode *devvp, struct mount *mp, 150 struct lwp *l, struct filecore_args *argp)); 151 152 #if 0 153 int 154 filecore_mountroot() 155 { 156 struct mount *mp; 157 extern struct vnode *rootvp; 158 struct proc *p = curproc; /* XXX */ 159 int error; 160 struct filecore_args args; 161 162 if (device_class(root_device) != DV_DISK) 163 return (ENODEV); 164 165 /* 166 * Get vnodes for swapdev and rootdev. 167 */ 168 if (bdevvp(rootdev, &rootvp)) 169 panic("filecore_mountroot: can't setup rootvp"); 170 171 if ((error = vfs_rootmountalloc(MOUNT_FILECORE, "root_device", &mp)) != 0) 172 return (error); 173 174 args.flags = FILECOREMNT_ROOT; 175 if ((error = filecore_mountfs(rootvp, mp, p, &args)) != 0) { 176 vfs_unbusy(mp, false, NULL); 177 vfs_destroy(mp, false); 178 return (error); 179 } 180 simple_lock(&mountlist_slock); 181 CIRCLEQ_INSERT_TAIL(&mountlist, mp, mnt_list); 182 mp->mnt_iflag |= IMNT_ONLIST; 183 simple_unlock(&mountlist_slock); 184 (void)filecore_statvfs(mp, &mp->mnt_stat, p); 185 vfs_unbusy(mp, false, NULL); 186 return (0); 187 } 188 #endif 189 190 /* 191 * VFS Operations. 192 * 193 * mount system call 194 */ 195 int 196 filecore_mount(mp, path, data, data_len) 197 struct mount *mp; 198 const char *path; 199 void *data; 200 size_t *data_len; 201 { 202 struct lwp *l = curlwp; 203 struct nameidata nd; 204 struct vnode *devvp; 205 struct filecore_args *args = data; 206 int error; 207 struct filecore_mnt *fcmp = NULL; 208 209 if (*data_len < sizeof *args) 210 return EINVAL; 211 212 if (mp->mnt_flag & MNT_GETARGS) { 213 fcmp = VFSTOFILECORE(mp); 214 if (fcmp == NULL) 215 return EIO; 216 args->flags = fcmp->fc_mntflags; 217 args->uid = fcmp->fc_uid; 218 args->gid = fcmp->fc_gid; 219 args->fspec = NULL; 220 *data_len = sizeof *args; 221 return 0; 222 } 223 224 if ((mp->mnt_flag & MNT_RDONLY) == 0) 225 return (EROFS); 226 227 if ((mp->mnt_flag & MNT_UPDATE) && args->fspec == NULL) 228 return EINVAL; 229 230 /* 231 * Not an update, or updating the name: look up the name 232 * and verify that it refers to a sensible block device. 233 */ 234 NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, args->fspec); 235 if ((error = namei(&nd)) != 0) 236 return (error); 237 devvp = nd.ni_vp; 238 239 if (devvp->v_type != VBLK) { 240 vrele(devvp); 241 return ENOTBLK; 242 } 243 if (bdevsw_lookup(devvp->v_rdev) == NULL) { 244 vrele(devvp); 245 return ENXIO; 246 } 247 /* 248 * If mount by non-root, then verify that user has necessary 249 * permissions on the device. 250 */ 251 if (kauth_authorize_generic(l->l_cred, KAUTH_GENERIC_ISSUSER, NULL)) { 252 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 253 error = VOP_ACCESS(devvp, VREAD, l->l_cred); 254 VOP_UNLOCK(devvp, 0); 255 if (error) { 256 vrele(devvp); 257 return (error); 258 } 259 } 260 if ((mp->mnt_flag & MNT_UPDATE) == 0) 261 error = filecore_mountfs(devvp, mp, l, args); 262 else { 263 if (devvp != fcmp->fc_devvp) 264 error = EINVAL; /* needs translation */ 265 else 266 vrele(devvp); 267 } 268 if (error) { 269 vrele(devvp); 270 return error; 271 } 272 fcmp = VFSTOFILECORE(mp); 273 return set_statvfs_info(path, UIO_USERSPACE, args->fspec, UIO_USERSPACE, 274 mp->mnt_op->vfs_name, mp, l); 275 } 276 277 /* 278 * Common code for mount and mountroot 279 */ 280 static int 281 filecore_mountfs(devvp, mp, l, argp) 282 struct vnode *devvp; 283 struct mount *mp; 284 struct lwp *l; 285 struct filecore_args *argp; 286 { 287 struct filecore_mnt *fcmp = (struct filecore_mnt *)0; 288 struct buf *bp = NULL; 289 dev_t dev = devvp->v_rdev; 290 int error = EINVAL; 291 int ronly = (mp->mnt_flag & MNT_RDONLY) != 0; 292 struct filecore_disc_record *fcdr; 293 unsigned map; 294 unsigned log2secsize; 295 296 if (!ronly) 297 return EROFS; 298 299 if ((error = vinvalbuf(devvp, V_SAVE, l->l_cred, l, 0, 0)) != 0) 300 return (error); 301 302 error = VOP_OPEN(devvp, ronly ? FREAD : FREAD|FWRITE, FSCRED); 303 if (error) 304 return error; 305 306 /* Read the filecore boot block to check FS validity and to find the map */ 307 error = bread(devvp, FILECORE_BOOTBLOCK_BLKN, 308 FILECORE_BOOTBLOCK_SIZE, NOCRED, &bp); 309 #ifdef FILECORE_DEBUG_BR 310 printf("bread(%p, %x, %d, CRED, %p)=%d\n", devvp, 311 FILECORE_BOOTBLOCK_BLKN, FILECORE_BOOTBLOCK_SIZE, 312 bp, error); 313 #endif 314 if (error != 0) 315 goto out; 316 317 KASSERT(bp != NULL); 318 if (filecore_bbchecksum(bp->b_data) != 0) { 319 error = EINVAL; 320 goto out; 321 } 322 fcdr = (struct filecore_disc_record *)((char *)(bp->b_data) + 323 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 #ifdef FILECORE_DEBUG_BR 329 printf("brelse(%p) vf1\n", bp); 330 #endif 331 brelse(bp, BC_AGE); 332 bp = NULL; 333 334 /* Read the bootblock in the map */ 335 error = bread(devvp, map, 1 << log2secsize, NOCRED, &bp); 336 #ifdef FILECORE_DEBUG_BR 337 printf("bread(%p, %x, %d, CRED, %p)=%d\n", devvp, 338 map, 1 << log2secsize, bp, error); 339 #endif 340 if (error != 0) 341 goto out; 342 fcdr = (struct filecore_disc_record *)((char *)(bp->b_data) + 4); 343 fcmp = malloc(sizeof *fcmp, M_FILECOREMNT, M_WAITOK); 344 memset(fcmp, 0, sizeof *fcmp); 345 if (fcdr->log2bpmb > fcdr->log2secsize) 346 fcmp->log2bsize = fcdr->log2bpmb; 347 else fcmp->log2bsize = fcdr->log2secsize; 348 fcmp->blksize = 1 << fcmp->log2bsize; 349 memcpy(&fcmp->drec, fcdr, sizeof(*fcdr)); 350 fcmp->map = map; 351 fcmp->idspz = ((8 << fcdr->log2secsize) - fcdr->zone_spare) 352 / (fcdr->idlen + 1); 353 fcmp->mask = (1 << fcdr->idlen) - 1; 354 if (fcdr->big_flag & 1) { 355 fcmp->nblks = ((((u_int64_t)fcdr->disc_size_2) << 32) 356 + fcdr->disc_size) / fcmp->blksize; 357 } else { 358 fcmp->nblks=fcdr->disc_size / fcmp->blksize; 359 } 360 361 #ifdef FILECORE_DEBUG_BR 362 printf("brelse(%p) vf2\n", bp); 363 #endif 364 brelse(bp, BC_AGE); 365 bp = NULL; 366 367 mp->mnt_data = fcmp; 368 mp->mnt_stat.f_fsidx.__fsid_val[0] = (long)dev; 369 mp->mnt_stat.f_fsidx.__fsid_val[1] = makefstype(MOUNT_FILECORE); 370 mp->mnt_stat.f_fsid = mp->mnt_stat.f_fsidx.__fsid_val[0]; 371 mp->mnt_stat.f_namemax = 10; 372 mp->mnt_flag |= MNT_LOCAL; 373 mp->mnt_dev_bshift = fcdr->log2secsize; 374 mp->mnt_fs_bshift = fcmp->log2bsize; 375 376 fcmp->fc_mountp = mp; 377 fcmp->fc_dev = dev; 378 fcmp->fc_devvp = devvp; 379 fcmp->fc_mntflags = argp->flags; 380 if (argp->flags & FILECOREMNT_USEUID) { 381 fcmp->fc_uid = kauth_cred_getuid(l->l_cred); 382 fcmp->fc_gid = kauth_cred_getgid(l->l_cred); 383 } else { 384 fcmp->fc_uid = argp->uid; 385 fcmp->fc_gid = argp->gid; 386 } 387 388 return 0; 389 out: 390 if (bp) { 391 #ifdef FILECORE_DEBUG_BR 392 printf("brelse(%p) vf3\n", bp); 393 #endif 394 brelse(bp, 0); 395 } 396 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 397 (void)VOP_CLOSE(devvp, ronly ? FREAD : FREAD|FWRITE, NOCRED); 398 VOP_UNLOCK(devvp, 0); 399 return error; 400 } 401 402 /* 403 * Make a filesystem operational. 404 * Nothing to do at the moment. 405 */ 406 /* ARGSUSED */ 407 int 408 filecore_start(mp, flags) 409 struct mount *mp; 410 int flags; 411 { 412 return 0; 413 } 414 415 /* 416 * unmount system call 417 */ 418 int 419 filecore_unmount(mp, mntflags) 420 struct mount *mp; 421 int mntflags; 422 { 423 struct filecore_mnt *fcmp; 424 int error, flags = 0; 425 426 if (mntflags & MNT_FORCE) 427 flags |= FORCECLOSE; 428 if ((error = vflush(mp, NULLVP, flags)) != 0) 429 return (error); 430 431 fcmp = VFSTOFILECORE(mp); 432 433 if (fcmp->fc_devvp->v_type != VBAD) 434 fcmp->fc_devvp->v_specmountpoint = NULL; 435 vn_lock(fcmp->fc_devvp, LK_EXCLUSIVE | LK_RETRY); 436 error = VOP_CLOSE(fcmp->fc_devvp, FREAD, NOCRED); 437 vput(fcmp->fc_devvp); 438 free(fcmp, M_FILECOREMNT); 439 mp->mnt_data = NULL; 440 mp->mnt_flag &= ~MNT_LOCAL; 441 return (error); 442 } 443 444 /* 445 * Return root of a filesystem 446 */ 447 int 448 filecore_root(mp, vpp) 449 struct mount *mp; 450 struct vnode **vpp; 451 { 452 struct vnode *nvp; 453 int error; 454 455 if ((error = VFS_VGET(mp, FILECORE_ROOTINO, &nvp)) != 0) 456 return (error); 457 *vpp = nvp; 458 return (0); 459 } 460 461 /* 462 * Get file system statistics. 463 */ 464 int 465 filecore_statvfs(mp, sbp) 466 struct mount *mp; 467 struct statvfs *sbp; 468 { 469 struct filecore_mnt *fcmp = VFSTOFILECORE(mp); 470 471 sbp->f_bsize = fcmp->blksize; 472 sbp->f_frsize = sbp->f_bsize; /* XXX */ 473 sbp->f_iosize = sbp->f_bsize; /* XXX */ 474 sbp->f_blocks = fcmp->nblks; 475 sbp->f_bfree = 0; /* total free blocks */ 476 sbp->f_bavail = 0; /* blocks free for non superuser */ 477 sbp->f_bresvd = 0; /* reserved blocks */ 478 sbp->f_files = 0; /* total files */ 479 sbp->f_ffree = 0; /* free file nodes for non superuser */ 480 sbp->f_favail = 0; /* free file nodes */ 481 sbp->f_fresvd = 0; /* reserved file nodes */ 482 copy_statvfs_info(sbp, mp); 483 return 0; 484 } 485 486 /* ARGSUSED */ 487 int 488 filecore_sync(mp, waitfor, cred) 489 struct mount *mp; 490 int waitfor; 491 kauth_cred_t cred; 492 { 493 return (0); 494 } 495 496 /* 497 * File handle to vnode 498 * 499 * Have to be really careful about stale file handles: 500 * - check that the inode number is in range 501 * - call iget() to get the locked inode 502 * - check for an unallocated inode (i_mode == 0) 503 * - check that the generation number matches 504 */ 505 506 struct ifid { 507 ushort ifid_len; 508 ushort ifid_pad; 509 u_int32_t ifid_ino; 510 }; 511 512 /* ARGSUSED */ 513 int 514 filecore_fhtovp(mp, fhp, vpp) 515 struct mount *mp; 516 struct fid *fhp; 517 struct vnode **vpp; 518 { 519 struct ifid ifh; 520 struct vnode *nvp; 521 struct filecore_node *ip; 522 int error; 523 524 if (fhp->fid_len != sizeof(struct ifid)) 525 return EINVAL; 526 527 memcpy(&ifh, fhp, sizeof(ifh)); 528 if ((error = VFS_VGET(mp, ifh.ifid_ino, &nvp)) != 0) { 529 *vpp = NULLVP; 530 return (error); 531 } 532 ip = VTOI(nvp); 533 if (filecore_staleinode(ip)) { 534 vput(nvp); 535 *vpp = NULLVP; 536 return (ESTALE); 537 } 538 *vpp = nvp; 539 return (0); 540 } 541 542 /* This looks complicated. Look at other vgets as well as the iso9660 one. 543 * 544 * The filecore inode number is made up of 1 byte directory entry index and 545 * 3 bytes of the internal disc address of the directory. On a read-only 546 * filesystem this is unique. For a read-write version we may not be able to 547 * do vget, see msdosfs. 548 */ 549 550 int 551 filecore_vget(mp, ino, vpp) 552 struct mount *mp; 553 ino_t ino; 554 struct vnode **vpp; 555 { 556 struct filecore_mnt *fcmp; 557 struct filecore_node *ip; 558 struct buf *bp; 559 struct vnode *vp; 560 dev_t dev; 561 int error; 562 563 fcmp = VFSTOFILECORE(mp); 564 dev = fcmp->fc_dev; 565 if ((*vpp = filecore_ihashget(dev, ino)) != NULLVP) 566 return (0); 567 568 /* Allocate a new vnode/filecore_node. */ 569 if ((error = getnewvnode(VT_FILECORE, mp, filecore_vnodeop_p, &vp)) 570 != 0) { 571 *vpp = NULLVP; 572 return (error); 573 } 574 ip = pool_get(&filecore_node_pool, PR_WAITOK); 575 memset(ip, 0, sizeof(struct filecore_node)); 576 vp->v_data = ip; 577 ip->i_vnode = vp; 578 ip->i_dev = dev; 579 ip->i_number = ino; 580 ip->i_block = -1; 581 ip->i_parent = -2; 582 genfs_node_init(vp, &filecore_genfsops); 583 584 /* 585 * Put it onto its hash chain and lock it so that other requests for 586 * this inode will block if they arrive while we are sleeping waiting 587 * for old data structures to be purged or for the contents of the 588 * disk portion of this inode to be read. 589 */ 590 filecore_ihashins(ip); 591 592 if (ino == FILECORE_ROOTINO) { 593 /* Here we need to construct a root directory inode */ 594 memcpy(ip->i_dirent.name, "root", 4); 595 ip->i_dirent.load = 0; 596 ip->i_dirent.exec = 0; 597 ip->i_dirent.len = FILECORE_DIR_SIZE; 598 ip->i_dirent.addr = fcmp->drec.root; 599 ip->i_dirent.attr = FILECORE_ATTR_DIR | FILECORE_ATTR_READ; 600 601 } else { 602 /* Read in Data from Directory Entry */ 603 if ((error = filecore_bread(fcmp, ino & FILECORE_INO_MASK, 604 FILECORE_DIR_SIZE, NOCRED, &bp)) != 0) { 605 vput(vp); 606 #ifdef FILECORE_DEBUG_BR 607 printf("brelse(%p) vf4\n", bp); 608 #endif 609 brelse(bp, 0); 610 *vpp = NULL; 611 return (error); 612 } 613 614 memcpy(&ip->i_dirent, 615 fcdirentry(bp->b_data, ino >> FILECORE_INO_INDEX), 616 sizeof(struct filecore_direntry)); 617 #ifdef FILECORE_DEBUG_BR 618 printf("brelse(%p) vf5\n", bp); 619 #endif 620 brelse(bp, 0); 621 } 622 623 ip->i_mnt = fcmp; 624 ip->i_devvp = fcmp->fc_devvp; 625 ip->i_diroff = 0; 626 VREF(ip->i_devvp); 627 628 /* 629 * Setup type 630 */ 631 vp->v_type = VREG; 632 if (ip->i_dirent.attr & FILECORE_ATTR_DIR) 633 vp->v_type = VDIR; 634 635 /* 636 * Initialize the associated vnode 637 */ 638 switch (vp->v_type) { 639 case VFIFO: 640 case VCHR: 641 case VBLK: 642 /* 643 * Devices not supported. 644 */ 645 vput(vp); 646 return (EOPNOTSUPP); 647 case VLNK: 648 case VNON: 649 case VSOCK: 650 case VDIR: 651 case VBAD: 652 case VREG: 653 break; 654 } 655 656 if (ino == FILECORE_ROOTINO) 657 vp->v_vflag |= VV_ROOT; 658 659 /* 660 * XXX need generation number? 661 */ 662 663 uvm_vnp_setsize(vp, ip->i_size); 664 *vpp = vp; 665 return (0); 666 } 667 668 /* 669 * Vnode pointer to File handle 670 */ 671 /* ARGSUSED */ 672 int 673 filecore_vptofh(vp, fhp, fh_size) 674 struct vnode *vp; 675 struct fid *fhp; 676 size_t *fh_size; 677 { 678 struct filecore_node *ip = VTOI(vp); 679 struct ifid ifh; 680 681 if (*fh_size < sizeof(struct ifid)) { 682 *fh_size = sizeof(struct ifid); 683 return E2BIG; 684 } 685 memset(&ifh, 0, sizeof(ifh)); 686 ifh.ifid_len = sizeof(struct ifid); 687 ifh.ifid_ino = ip->i_number; 688 memcpy(fhp, &ifh, sizeof(ifh)); 689 return 0; 690 } 691 692 SYSCTL_SETUP(sysctl_vfs_filecore_setup, "sysctl vfs.filecore subtree setup") 693 { 694 695 sysctl_createv(clog, 0, NULL, NULL, 696 CTLFLAG_PERMANENT, 697 CTLTYPE_NODE, "vfs", NULL, 698 NULL, 0, NULL, 0, 699 CTL_VFS, CTL_EOL); 700 sysctl_createv(clog, 0, NULL, NULL, 701 CTLFLAG_PERMANENT, 702 CTLTYPE_NODE, "filecore", 703 SYSCTL_DESCR("Acorn FILECORE file system"), 704 NULL, 0, NULL, 0, 705 CTL_VFS, 19, CTL_EOL); 706 /* 707 * XXX the "19" above could be dynamic, thereby eliminating 708 * one more instance of the "number to vfs" mapping problem, 709 * but "19" is the order as taken from sys/mount.h 710 */ 711 } 712
Indexes created Wed Oct 01 12:09:54 GMT 2025