filecore_vfsops.c revision 1.23.6.1
1 /* $NetBSD: filecore_vfsops.c,v 1.23.6.1 2006/05/24 15:50:34 tron 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 1.23.6.1 2006/05/24 15:50:34 tron 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/specfs/specdev.h> 81 #include <sys/mount.h> 82 #include <sys/buf.h> 83 #include <sys/file.h> 84 #include <sys/device.h> 85 #include <sys/errno.h> 86 #include <sys/malloc.h> 87 #include <sys/pool.h> 88 #include <sys/conf.h> 89 #include <sys/sysctl.h> 90 #include <sys/kauth.h> 91 92 #include <fs/filecorefs/filecore.h> 93 #include <fs/filecorefs/filecore_extern.h> 94 #include <fs/filecorefs/filecore_node.h> 95 #include <fs/filecorefs/filecore_mount.h> 96 97 MALLOC_DEFINE(M_FILECOREMNT, "filecore mount", "Filecore FS mount structures"); 98 99 extern const struct vnodeopv_desc filecore_vnodeop_opv_desc; 100 101 const struct vnodeopv_desc * const filecore_vnodeopv_descs[] = { 102 &filecore_vnodeop_opv_desc, 103 NULL, 104 }; 105 106 struct vfsops filecore_vfsops = { 107 MOUNT_FILECORE, 108 filecore_mount, 109 filecore_start, 110 filecore_unmount, 111 filecore_root, 112 filecore_quotactl, 113 filecore_statvfs, 114 filecore_sync, 115 filecore_vget, 116 filecore_fhtovp, 117 filecore_vptofh, 118 filecore_init, 119 filecore_reinit, 120 filecore_done, 121 NULL, /* filecore_mountroot */ 122 (int (*)(struct mount *, struct vnode *, struct timespec *)) eopnotsupp, 123 vfs_stdextattrctl, 124 filecore_vnodeopv_descs, 125 }; 126 VFS_ATTACH(filecore_vfsops); 127 128 static const struct genfs_ops filecore_genfsops = { 129 .gop_size = genfs_size, 130 }; 131 132 /* 133 * Called by vfs_mountroot when iso is going to be mounted as root. 134 * 135 * Name is updated by mount(8) after booting. 136 */ 137 138 static int filecore_mountfs __P((struct vnode *devvp, struct mount *mp, 139 struct lwp *l, struct filecore_args *argp)); 140 141 #if 0 142 int 143 filecore_mountroot() 144 { 145 struct mount *mp; 146 extern struct vnode *rootvp; 147 struct proc *p = curproc; /* XXX */ 148 int error; 149 struct filecore_args args; 150 151 if (device_class(root_device) != DV_DISK) 152 return (ENODEV); 153 154 /* 155 * Get vnodes for swapdev and rootdev. 156 */ 157 if (bdevvp(rootdev, &rootvp)) 158 panic("filecore_mountroot: can't setup rootvp"); 159 160 if ((error = vfs_rootmountalloc(MOUNT_FILECORE, "root_device", &mp)) != 0) 161 return (error); 162 163 args.flags = FILECOREMNT_ROOT; 164 if ((error = filecore_mountfs(rootvp, mp, p, &args)) != 0) { 165 mp->mnt_op->vfs_refcount--; 166 vfs_unbusy(mp); 167 free(mp, M_MOUNT); 168 return (error); 169 } 170 simple_lock(&mountlist_slock); 171 CIRCLEQ_INSERT_TAIL(&mountlist, mp, mnt_list); 172 simple_unlock(&mountlist_slock); 173 (void)filecore_statvfs(mp, &mp->mnt_stat, p); 174 vfs_unbusy(mp); 175 return (0); 176 } 177 #endif 178 179 /* 180 * VFS Operations. 181 * 182 * mount system call 183 */ 184 int 185 filecore_mount(mp, path, data, ndp, l) 186 struct mount *mp; 187 const char *path; 188 void *data; 189 struct nameidata *ndp; 190 struct lwp *l; 191 { 192 struct vnode *devvp; 193 struct filecore_args args; 194 struct proc *p; 195 int error; 196 struct filecore_mnt *fcmp = NULL; 197 198 p = l->l_proc; 199 if (mp->mnt_flag & MNT_GETARGS) { 200 fcmp = VFSTOFILECORE(mp); 201 if (fcmp == NULL) 202 return EIO; 203 args.flags = fcmp->fc_mntflags; 204 args.uid = fcmp->fc_uid; 205 args.gid = fcmp->fc_gid; 206 args.fspec = NULL; 207 return copyout(&args, data, sizeof(args)); 208 } 209 error = copyin(data, &args, sizeof (struct filecore_args)); 210 if (error) 211 return (error); 212 213 if ((mp->mnt_flag & MNT_RDONLY) == 0) 214 return (EROFS); 215 216 if ((mp->mnt_flag & MNT_UPDATE) && args.fspec == NULL) 217 return EINVAL; 218 219 /* 220 * Not an update, or updating the name: look up the name 221 * and verify that it refers to a sensible block device. 222 */ 223 NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args.fspec, l); 224 if ((error = namei(ndp)) != 0) 225 return (error); 226 devvp = ndp->ni_vp; 227 228 if (devvp->v_type != VBLK) { 229 vrele(devvp); 230 return ENOTBLK; 231 } 232 if (bdevsw_lookup(devvp->v_rdev) == NULL) { 233 vrele(devvp); 234 return ENXIO; 235 } 236 /* 237 * If mount by non-root, then verify that user has necessary 238 * permissions on the device. 239 */ 240 if (kauth_cred_geteuid(p->p_cred) != 0) { 241 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 242 error = VOP_ACCESS(devvp, VREAD, p->p_cred, l); 243 VOP_UNLOCK(devvp, 0); 244 if (error) { 245 vrele(devvp); 246 return (error); 247 } 248 } 249 if ((mp->mnt_flag & MNT_UPDATE) == 0) 250 error = filecore_mountfs(devvp, mp, l, &args); 251 else { 252 if (devvp != fcmp->fc_devvp) 253 error = EINVAL; /* needs translation */ 254 else 255 vrele(devvp); 256 } 257 if (error) { 258 vrele(devvp); 259 return error; 260 } 261 fcmp = VFSTOFILECORE(mp); 262 return set_statvfs_info(path, UIO_USERSPACE, args.fspec, UIO_USERSPACE, 263 mp, l); 264 } 265 266 /* 267 * Common code for mount and mountroot 268 */ 269 static int 270 filecore_mountfs(devvp, mp, l, argp) 271 struct vnode *devvp; 272 struct mount *mp; 273 struct lwp *l; 274 struct filecore_args *argp; 275 { 276 struct filecore_mnt *fcmp = (struct filecore_mnt *)0; 277 struct buf *bp = NULL; 278 dev_t dev = devvp->v_rdev; 279 int error = EINVAL; 280 int ronly = (mp->mnt_flag & MNT_RDONLY) != 0; 281 extern struct vnode *rootvp; 282 struct filecore_disc_record *fcdr; 283 unsigned map; 284 unsigned log2secsize; 285 286 if (!ronly) 287 return EROFS; 288 289 /* 290 * Disallow multiple mounts of the same device. 291 * Disallow mounting of a device that is currently in use 292 * (except for root, which might share swap device for miniroot). 293 * Flush out any old buffers remaining from a previous use. 294 */ 295 if ((error = vfs_mountedon(devvp)) != 0) 296 return error; 297 if (vcount(devvp) > 1 && devvp != rootvp) 298 return EBUSY; 299 if ((error = vinvalbuf(devvp, V_SAVE, l->l_proc->p_cred, l, 0, 0)) 300 != 0) 301 return (error); 302 303 error = VOP_OPEN(devvp, ronly ? FREAD : FREAD|FWRITE, FSCRED, l); 304 if (error) 305 return error; 306 307 /* Read the filecore boot block to check FS validity and to find the map */ 308 error = bread(devvp, FILECORE_BOOTBLOCK_BLKN, 309 FILECORE_BOOTBLOCK_SIZE, NOCRED, &bp); 310 #ifdef FILECORE_DEBUG_BR 311 printf("bread(%p, %x, %d, CRED, %p)=%d\n", devvp, 312 FILECORE_BOOTBLOCK_BLKN, FILECORE_BOOTBLOCK_SIZE, 313 bp, error); 314 #endif 315 if (error != 0) 316 goto out; 317 if (filecore_bbchecksum(bp->b_data) != 0) { 318 error = EINVAL; 319 goto out; 320 } 321 fcdr = (struct filecore_disc_record *)(bp->b_data+FILECORE_BB_DISCREC); 322 map = ((((8 << fcdr->log2secsize) - fcdr->zone_spare) 323 * (fcdr->nzones / 2) - 8 * FILECORE_DISCREC_SIZE) 324 << fcdr->log2bpmb) >> fcdr->log2secsize; 325 log2secsize = fcdr->log2secsize; 326 bp->b_flags |= B_AGE; 327 #ifdef FILECORE_DEBUG_BR 328 printf("brelse(%p) vf1\n", bp); 329 #endif 330 brelse(bp); 331 bp = NULL; 332 333 /* Read the bootblock in the map */ 334 error = bread(devvp, map, 1 << log2secsize, NOCRED, &bp); 335 #ifdef FILECORE_DEBUG_BR 336 printf("bread(%p, %x, %d, CRED, %p)=%d\n", devvp, 337 map, 1 << log2secsize, bp, error); 338 #endif 339 if (error != 0) 340 goto out; 341 fcdr = (struct filecore_disc_record *)(bp->b_data + 4); 342 fcmp = malloc(sizeof *fcmp, M_FILECOREMNT, M_WAITOK); 343 memset(fcmp, 0, sizeof *fcmp); 344 if (fcdr->log2bpmb > fcdr->log2secsize) 345 fcmp->log2bsize = fcdr->log2bpmb; 346 else fcmp->log2bsize = fcdr->log2secsize; 347 fcmp->blksize = 1 << fcmp->log2bsize; 348 memcpy(&fcmp->drec, fcdr, sizeof(*fcdr)); 349 fcmp->map = map; 350 fcmp->idspz = ((8 << fcdr->log2secsize) - fcdr->zone_spare) 351 / (fcdr->idlen + 1); 352 fcmp->mask = (1 << fcdr->idlen) - 1; 353 if (fcdr->big_flag & 1) { 354 fcmp->nblks = ((((u_int64_t)fcdr->disc_size_2) << 32) 355 + fcdr->disc_size) / fcmp->blksize; 356 } else { 357 fcmp->nblks=fcdr->disc_size / fcmp->blksize; 358 } 359 360 bp->b_flags |= B_AGE; 361 #ifdef FILECORE_DEBUG_BR 362 printf("brelse(%p) vf2\n", bp); 363 #endif 364 brelse(bp); 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_proc->p_cred); 382 fcmp->fc_gid = kauth_cred_getgid(l->l_proc->p_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); 395 } 396 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 397 (void)VOP_CLOSE(devvp, ronly ? FREAD : FREAD|FWRITE, NOCRED, l); 398 VOP_UNLOCK(devvp, 0); 399 if (fcmp) { 400 free(fcmp, M_FILECOREMNT); 401 mp->mnt_data = NULL; 402 } 403 return error; 404 } 405 406 /* 407 * Make a filesystem operational. 408 * Nothing to do at the moment. 409 */ 410 /* ARGSUSED */ 411 int 412 filecore_start(mp, flags, l) 413 struct mount *mp; 414 int flags; 415 struct lwp *l; 416 { 417 return 0; 418 } 419 420 /* 421 * unmount system call 422 */ 423 int 424 filecore_unmount(mp, mntflags, l) 425 struct mount *mp; 426 int mntflags; 427 struct lwp *l; 428 { 429 struct filecore_mnt *fcmp; 430 int error, flags = 0; 431 432 if (mntflags & MNT_FORCE) 433 flags |= FORCECLOSE; 434 #if 0 435 mntflushbuf(mp, 0); 436 if (mntinvalbuf(mp)) 437 return EBUSY; 438 #endif 439 if ((error = vflush(mp, NULLVP, flags)) != 0) 440 return (error); 441 442 fcmp = VFSTOFILECORE(mp); 443 444 if (fcmp->fc_devvp->v_type != VBAD) 445 fcmp->fc_devvp->v_specmountpoint = NULL; 446 vn_lock(fcmp->fc_devvp, LK_EXCLUSIVE | LK_RETRY); 447 error = VOP_CLOSE(fcmp->fc_devvp, FREAD, NOCRED, l); 448 vput(fcmp->fc_devvp); 449 free(fcmp, M_FILECOREMNT); 450 mp->mnt_data = NULL; 451 mp->mnt_flag &= ~MNT_LOCAL; 452 return (error); 453 } 454 455 /* 456 * Return root of a filesystem 457 */ 458 int 459 filecore_root(mp, vpp) 460 struct mount *mp; 461 struct vnode **vpp; 462 { 463 struct vnode *nvp; 464 int error; 465 466 if ((error = VFS_VGET(mp, FILECORE_ROOTINO, &nvp)) != 0) 467 return (error); 468 *vpp = nvp; 469 return (0); 470 } 471 472 /* 473 * Do operations associated with quotas, not supported 474 */ 475 /* ARGSUSED */ 476 int 477 filecore_quotactl(mp, cmd, uid, arg, l) 478 struct mount *mp; 479 int cmd; 480 uid_t uid; 481 void *arg; 482 struct lwp *l; 483 { 484 485 return (EOPNOTSUPP); 486 } 487 488 /* 489 * Get file system statistics. 490 */ 491 int 492 filecore_statvfs(mp, sbp, l) 493 struct mount *mp; 494 struct statvfs *sbp; 495 struct lwp *l; 496 { 497 struct filecore_mnt *fcmp = VFSTOFILECORE(mp); 498 499 sbp->f_bsize = fcmp->blksize; 500 sbp->f_frsize = sbp->f_bsize; /* XXX */ 501 sbp->f_iosize = sbp->f_bsize; /* XXX */ 502 sbp->f_blocks = fcmp->nblks; 503 sbp->f_bfree = 0; /* total free blocks */ 504 sbp->f_bavail = 0; /* blocks free for non superuser */ 505 sbp->f_bresvd = 0; /* reserved blocks */ 506 sbp->f_files = 0; /* total files */ 507 sbp->f_ffree = 0; /* free file nodes for non superuser */ 508 sbp->f_favail = 0; /* free file nodes */ 509 sbp->f_fresvd = 0; /* reserved file nodes */ 510 copy_statvfs_info(sbp, mp); 511 return 0; 512 } 513 514 /* ARGSUSED */ 515 int 516 filecore_sync(mp, waitfor, cred, l) 517 struct mount *mp; 518 int waitfor; 519 kauth_cred_t cred; 520 struct lwp *l; 521 { 522 return (0); 523 } 524 525 /* 526 * File handle to vnode 527 * 528 * Have to be really careful about stale file handles: 529 * - check that the inode number is in range 530 * - call iget() to get the locked inode 531 * - check for an unallocated inode (i_mode == 0) 532 * - check that the generation number matches 533 */ 534 535 struct ifid { 536 ushort ifid_len; 537 ushort ifid_pad; 538 u_int32_t ifid_ino; 539 }; 540 541 /* ARGSUSED */ 542 int 543 filecore_fhtovp(mp, fhp, vpp) 544 struct mount *mp; 545 struct fid *fhp; 546 struct vnode **vpp; 547 { 548 struct ifid *ifhp = (struct ifid *)fhp; 549 struct vnode *nvp; 550 struct filecore_node *ip; 551 int error; 552 553 if ((error = VFS_VGET(mp, ifhp->ifid_ino, &nvp)) != 0) { 554 *vpp = NULLVP; 555 return (error); 556 } 557 ip = VTOI(nvp); 558 if (filecore_staleinode(ip)) { 559 vput(nvp); 560 *vpp = NULLVP; 561 return (ESTALE); 562 } 563 *vpp = nvp; 564 return (0); 565 } 566 567 /* This looks complicated. Look at other vgets as well as the iso9660 one. 568 * 569 * The filecore inode number is made up of 1 byte directory entry index and 570 * 3 bytes of the internal disc address of the directory. On a read-only 571 * filesystem this is unique. For a read-write version we may not be able to 572 * do vget, see msdosfs. 573 */ 574 575 int 576 filecore_vget(mp, ino, vpp) 577 struct mount *mp; 578 ino_t ino; 579 struct vnode **vpp; 580 { 581 struct filecore_mnt *fcmp; 582 struct filecore_node *ip; 583 struct buf *bp; 584 struct vnode *vp; 585 dev_t dev; 586 int error; 587 588 fcmp = VFSTOFILECORE(mp); 589 dev = fcmp->fc_dev; 590 if ((*vpp = filecore_ihashget(dev, ino)) != NULLVP) 591 return (0); 592 593 /* Allocate a new vnode/filecore_node. */ 594 if ((error = getnewvnode(VT_FILECORE, mp, filecore_vnodeop_p, &vp)) 595 != 0) { 596 *vpp = NULLVP; 597 return (error); 598 } 599 ip = pool_get(&filecore_node_pool, PR_WAITOK); 600 memset(ip, 0, sizeof(struct filecore_node)); 601 vp->v_data = ip; 602 ip->i_vnode = vp; 603 ip->i_dev = dev; 604 ip->i_number = ino; 605 ip->i_block = -1; 606 ip->i_parent = -2; 607 608 /* 609 * Put it onto its hash chain and lock it so that other requests for 610 * this inode will block if they arrive while we are sleeping waiting 611 * for old data structures to be purged or for the contents of the 612 * disk portion of this inode to be read. 613 */ 614 filecore_ihashins(ip); 615 616 if (ino == FILECORE_ROOTINO) { 617 /* Here we need to construct a root directory inode */ 618 memcpy(ip->i_dirent.name, "root", 4); 619 ip->i_dirent.load = 0; 620 ip->i_dirent.exec = 0; 621 ip->i_dirent.len = FILECORE_DIR_SIZE; 622 ip->i_dirent.addr = fcmp->drec.root; 623 ip->i_dirent.attr = FILECORE_ATTR_DIR | FILECORE_ATTR_READ; 624 625 } else { 626 /* Read in Data from Directory Entry */ 627 if ((error = filecore_bread(fcmp, ino & FILECORE_INO_MASK, 628 FILECORE_DIR_SIZE, NOCRED, &bp)) != 0) { 629 vput(vp); 630 #ifdef FILECORE_DEBUG_BR 631 printf("brelse(%p) vf4\n", bp); 632 #endif 633 brelse(bp); 634 *vpp = NULL; 635 return (error); 636 } 637 638 memcpy(&ip->i_dirent, 639 fcdirentry(bp->b_data, ino >> FILECORE_INO_INDEX), 640 sizeof(struct filecore_direntry)); 641 #ifdef FILECORE_DEBUG_BR 642 printf("brelse(%p) vf5\n", bp); 643 #endif 644 brelse(bp); 645 } 646 647 ip->i_mnt = fcmp; 648 ip->i_devvp = fcmp->fc_devvp; 649 ip->i_diroff = 0; 650 VREF(ip->i_devvp); 651 652 /* 653 * Setup type 654 */ 655 vp->v_type = VREG; 656 if (ip->i_dirent.attr & FILECORE_ATTR_DIR) 657 vp->v_type = VDIR; 658 659 /* 660 * Initialize the associated vnode 661 */ 662 switch (vp->v_type) { 663 case VFIFO: 664 case VCHR: 665 case VBLK: 666 /* 667 * Devices not supported. 668 */ 669 vput(vp); 670 return (EOPNOTSUPP); 671 case VLNK: 672 case VNON: 673 case VSOCK: 674 case VDIR: 675 case VBAD: 676 case VREG: 677 break; 678 } 679 680 if (ino == FILECORE_ROOTINO) 681 vp->v_flag |= VROOT; 682 683 /* 684 * XXX need generation number? 685 */ 686 687 genfs_node_init(vp, &filecore_genfsops); 688 vp->v_size = ip->i_size; 689 *vpp = vp; 690 return (0); 691 } 692 693 /* 694 * Vnode pointer to File handle 695 */ 696 /* ARGSUSED */ 697 int 698 filecore_vptofh(vp, fhp) 699 struct vnode *vp; 700 struct fid *fhp; 701 { 702 struct filecore_node *ip = VTOI(vp); 703 struct ifid *ifhp; 704 705 ifhp = (struct ifid *)fhp; 706 ifhp->ifid_len = sizeof(struct ifid); 707 ifhp->ifid_ino = ip->i_number; 708 return 0; 709 } 710 711 SYSCTL_SETUP(sysctl_vfs_filecore_setup, "sysctl vfs.filecore subtree setup") 712 { 713 714 sysctl_createv(clog, 0, NULL, NULL, 715 CTLFLAG_PERMANENT, 716 CTLTYPE_NODE, "vfs", NULL, 717 NULL, 0, NULL, 0, 718 CTL_VFS, CTL_EOL); 719 sysctl_createv(clog, 0, NULL, NULL, 720 CTLFLAG_PERMANENT, 721 CTLTYPE_NODE, "filecore", 722 SYSCTL_DESCR("Acorn FILECORE file system"), 723 NULL, 0, NULL, 0, 724 CTL_VFS, 19, CTL_EOL); 725 /* 726 * XXX the "19" above could be dynamic, thereby eliminating 727 * one more instance of the "number to vfs" mapping problem, 728 * but "19" is the order as taken from sys/mount.h 729 */ 730 } 731
Indexes created Wed Oct 01 12:09:54 GMT 2025