/sys/ufs/ffs/ffs_vfsops.c
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1/* $NetBSD: ffs_vfsops.c,v 1.271 2011/11/14 18:35:14 hannken Exp $ */ 2 3/*- 4 * Copyright (c) 2008, 2009 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Wasabi Systems, Inc, and by Andrew Doran. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32/* 33 * Copyright (c) 1989, 1991, 1993, 1994 34 * The Regents of the University of California. All rights reserved. 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions 38 * are met: 39 * 1. Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * 2. Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in the 43 * documentation and/or other materials provided with the distribution. 44 * 3. Neither the name of the University nor the names of its contributors 45 * may be used to endorse or promote products derived from this software 46 * without specific prior written permission. 47 * 48 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 49 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 50 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 51 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 52 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 53 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 54 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 55 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 56 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 57 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 58 * SUCH DAMAGE. 59 * 60 * @(#)ffs_vfsops.c 8.31 (Berkeley) 5/20/95 61 */ 62 63#include <sys/cdefs.h> 64__KERNEL_RCSID(0, "$NetBSD: ffs_vfsops.c,v 1.271 2011/11/14 18:35:14 hannken Exp $"); 65 66#if defined(_KERNEL_OPT) 67#include "opt_ffs.h" 68#include "opt_quota.h" 69#include "opt_wapbl.h" 70#endif 71 72#include <sys/param.h> 73#include <sys/systm.h> 74#include <sys/namei.h> 75#include <sys/proc.h> 76#include <sys/kernel.h> 77#include <sys/vnode.h> 78#include <sys/socket.h> 79#include <sys/mount.h> 80#include <sys/buf.h> 81#include <sys/device.h> 82#include <sys/disk.h> 83#include <sys/mbuf.h> 84#include <sys/file.h> 85#include <sys/disklabel.h> 86#include <sys/ioctl.h> 87#include <sys/errno.h> 88#include <sys/malloc.h> 89#include <sys/pool.h> 90#include <sys/lock.h> 91#include <sys/sysctl.h> 92#include <sys/conf.h> 93#include <sys/kauth.h> 94#include <sys/wapbl.h> 95#include <sys/fstrans.h> 96#include <sys/module.h> 97 98#include <miscfs/genfs/genfs.h> 99#include <miscfs/specfs/specdev.h> 100 101#include <ufs/ufs/quota.h> 102#include <ufs/ufs/ufsmount.h> 103#include <ufs/ufs/inode.h> 104#include <ufs/ufs/dir.h> 105#include <ufs/ufs/ufs_extern.h> 106#include <ufs/ufs/ufs_bswap.h> 107#include <ufs/ufs/ufs_wapbl.h> 108 109#include <ufs/ffs/fs.h> 110#include <ufs/ffs/ffs_extern.h> 111 112MODULE(MODULE_CLASS_VFS, ffs, NULL); 113 114static int ffs_vfs_fsync(vnode_t *, int); 115 116static struct sysctllog *ffs_sysctl_log; 117 118/* how many times ffs_init() was called */ 119int ffs_initcount = 0; 120 121extern const struct vnodeopv_desc ffs_vnodeop_opv_desc; 122extern const struct vnodeopv_desc ffs_specop_opv_desc; 123extern const struct vnodeopv_desc ffs_fifoop_opv_desc; 124 125const struct vnodeopv_desc * const ffs_vnodeopv_descs[] = { 126 &ffs_vnodeop_opv_desc, 127 &ffs_specop_opv_desc, 128 &ffs_fifoop_opv_desc, 129 NULL, 130}; 131 132struct vfsops ffs_vfsops = { 133 MOUNT_FFS, 134 sizeof (struct ufs_args), 135 ffs_mount, 136 ufs_start, 137 ffs_unmount, 138 ufs_root, 139 ufs_quotactl, 140 ffs_statvfs, 141 ffs_sync, 142 ffs_vget, 143 ffs_fhtovp, 144 ffs_vptofh, 145 ffs_init, 146 ffs_reinit, 147 ffs_done, 148 ffs_mountroot, 149 ffs_snapshot, 150 ffs_extattrctl, 151 ffs_suspendctl, 152 genfs_renamelock_enter, 153 genfs_renamelock_exit, 154 ffs_vfs_fsync, 155 ffs_vnodeopv_descs, 156 0, 157 { NULL, NULL }, 158}; 159 160static const struct genfs_ops ffs_genfsops = { 161 .gop_size = ffs_gop_size, 162 .gop_alloc = ufs_gop_alloc, 163 .gop_write = genfs_gop_write, 164 .gop_markupdate = ufs_gop_markupdate, 165}; 166 167static const struct ufs_ops ffs_ufsops = { 168 .uo_itimes = ffs_itimes, 169 .uo_update = ffs_update, 170 .uo_truncate = ffs_truncate, 171 .uo_valloc = ffs_valloc, 172 .uo_vfree = ffs_vfree, 173 .uo_balloc = ffs_balloc, 174 .uo_unmark_vnode = (void (*)(vnode_t *))nullop, 175}; 176 177static int 178ffs_modcmd(modcmd_t cmd, void *arg) 179{ 180 int error; 181 182#if 0 183 extern int doasyncfree; 184#endif 185#ifdef UFS_EXTATTR 186 extern int ufs_extattr_autocreate; 187#endif 188 extern int ffs_log_changeopt; 189 190 switch (cmd) { 191 case MODULE_CMD_INIT: 192 error = vfs_attach(&ffs_vfsops); 193 if (error != 0) 194 break; 195 196 sysctl_createv(&ffs_sysctl_log, 0, NULL, NULL, 197 CTLFLAG_PERMANENT, 198 CTLTYPE_NODE, "vfs", NULL, 199 NULL, 0, NULL, 0, 200 CTL_VFS, CTL_EOL); 201 sysctl_createv(&ffs_sysctl_log, 0, NULL, NULL, 202 CTLFLAG_PERMANENT, 203 CTLTYPE_NODE, "ffs", 204 SYSCTL_DESCR("Berkeley Fast File System"), 205 NULL, 0, NULL, 0, 206 CTL_VFS, 1, CTL_EOL); 207 /* 208 * @@@ should we even bother with these first three? 209 */ 210 sysctl_createv(&ffs_sysctl_log, 0, NULL, NULL, 211 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 212 CTLTYPE_INT, "doclusterread", NULL, 213 sysctl_notavail, 0, NULL, 0, 214 CTL_VFS, 1, FFS_CLUSTERREAD, CTL_EOL); 215 sysctl_createv(&ffs_sysctl_log, 0, NULL, NULL, 216 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 217 CTLTYPE_INT, "doclusterwrite", NULL, 218 sysctl_notavail, 0, NULL, 0, 219 CTL_VFS, 1, FFS_CLUSTERWRITE, CTL_EOL); 220 sysctl_createv(&ffs_sysctl_log, 0, NULL, NULL, 221 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 222 CTLTYPE_INT, "doreallocblks", NULL, 223 sysctl_notavail, 0, NULL, 0, 224 CTL_VFS, 1, FFS_REALLOCBLKS, CTL_EOL); 225#if 0 226 sysctl_createv(&ffs_sysctl_log, 0, NULL, NULL, 227 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 228 CTLTYPE_INT, "doasyncfree", 229 SYSCTL_DESCR("Release dirty blocks asynchronously"), 230 NULL, 0, &doasyncfree, 0, 231 CTL_VFS, 1, FFS_ASYNCFREE, CTL_EOL); 232#endif 233 sysctl_createv(&ffs_sysctl_log, 0, NULL, NULL, 234 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 235 CTLTYPE_INT, "log_changeopt", 236 SYSCTL_DESCR("Log changes in optimization strategy"), 237 NULL, 0, &ffs_log_changeopt, 0, 238 CTL_VFS, 1, FFS_LOG_CHANGEOPT, CTL_EOL); 239#ifdef UFS_EXTATTR 240 sysctl_createv(&ffs_sysctl_log, 0, NULL, NULL, 241 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 242 CTLTYPE_INT, "extattr_autocreate", 243 SYSCTL_DESCR("Size of attribute for " 244 "backing file autocreation"), 245 NULL, 0, &ufs_extattr_autocreate, 0, 246 CTL_VFS, 1, FFS_EXTATTR_AUTOCREATE, CTL_EOL); 247 248#endif /* UFS_EXTATTR */ 249 250 break; 251 case MODULE_CMD_FINI: 252 error = vfs_detach(&ffs_vfsops); 253 if (error != 0) 254 break; 255 sysctl_teardown(&ffs_sysctl_log); 256 break; 257 default: 258 error = ENOTTY; 259 break; 260 } 261 262 return (error); 263} 264 265pool_cache_t ffs_inode_cache; 266pool_cache_t ffs_dinode1_cache; 267pool_cache_t ffs_dinode2_cache; 268 269static void ffs_oldfscompat_read(struct fs *, struct ufsmount *, daddr_t); 270static void ffs_oldfscompat_write(struct fs *, struct ufsmount *); 271 272/* 273 * Called by main() when ffs is going to be mounted as root. 274 */ 275 276int 277ffs_mountroot(void) 278{ 279 struct fs *fs; 280 struct mount *mp; 281 struct lwp *l = curlwp; /* XXX */ 282 struct ufsmount *ump; 283 int error; 284 285 if (device_class(root_device) != DV_DISK) 286 return (ENODEV); 287 288 if ((error = vfs_rootmountalloc(MOUNT_FFS, "root_device", &mp))) { 289 vrele(rootvp); 290 return (error); 291 } 292 293 /* 294 * We always need to be able to mount the root file system. 295 */ 296 mp->mnt_flag |= MNT_FORCE; 297 if ((error = ffs_mountfs(rootvp, mp, l)) != 0) { 298 vfs_unbusy(mp, false, NULL); 299 vfs_destroy(mp); 300 return (error); 301 } 302 mp->mnt_flag &= ~MNT_FORCE; 303 mutex_enter(&mountlist_lock); 304 CIRCLEQ_INSERT_TAIL(&mountlist, mp, mnt_list); 305 mutex_exit(&mountlist_lock); 306 ump = VFSTOUFS(mp); 307 fs = ump->um_fs; 308 memset(fs->fs_fsmnt, 0, sizeof(fs->fs_fsmnt)); 309 (void)copystr(mp->mnt_stat.f_mntonname, fs->fs_fsmnt, MNAMELEN - 1, 0); 310 (void)ffs_statvfs(mp, &mp->mnt_stat); 311 vfs_unbusy(mp, false, NULL); 312 setrootfstime((time_t)fs->fs_time); 313 return (0); 314} 315 316/* 317 * VFS Operations. 318 * 319 * mount system call 320 */ 321int 322ffs_mount(struct mount *mp, const char *path, void *data, size_t *data_len) 323{ 324 struct lwp *l = curlwp; 325 struct vnode *devvp = NULL; 326 struct ufs_args *args = data; 327 struct ufsmount *ump = NULL; 328 struct fs *fs; 329 int error = 0, flags, update; 330 mode_t accessmode; 331 332 if (*data_len < sizeof *args) 333 return EINVAL; 334 335 if (mp->mnt_flag & MNT_GETARGS) { 336 ump = VFSTOUFS(mp); 337 if (ump == NULL) 338 return EIO; 339 args->fspec = NULL; 340 *data_len = sizeof *args; 341 return 0; 342 } 343 344 update = mp->mnt_flag & MNT_UPDATE; 345 346 /* Check arguments */ 347 if (args->fspec != NULL) { 348 /* 349 * Look up the name and verify that it's sane. 350 */ 351 error = namei_simple_user(args->fspec, 352 NSM_FOLLOW_NOEMULROOT, &devvp); 353 if (error != 0) 354 return (error); 355 356 if (!update) { 357 /* 358 * Be sure this is a valid block device 359 */ 360 if (devvp->v_type != VBLK) 361 error = ENOTBLK; 362 else if (bdevsw_lookup(devvp->v_rdev) == NULL) 363 error = ENXIO; 364 } else { 365 /* 366 * Be sure we're still naming the same device 367 * used for our initial mount 368 */ 369 ump = VFSTOUFS(mp); 370 if (devvp != ump->um_devvp) { 371 if (devvp->v_rdev != ump->um_devvp->v_rdev) 372 error = EINVAL; 373 else { 374 vrele(devvp); 375 devvp = ump->um_devvp; 376 vref(devvp); 377 } 378 } 379 } 380 } else { 381 if (!update) { 382 /* New mounts must have a filename for the device */ 383 return (EINVAL); 384 } else { 385 /* Use the extant mount */ 386 ump = VFSTOUFS(mp); 387 devvp = ump->um_devvp; 388 vref(devvp); 389 } 390 } 391 392 /* 393 * If mount by non-root, then verify that user has necessary 394 * permissions on the device. 395 * 396 * Permission to update a mount is checked higher, so here we presume 397 * updating the mount is okay (for example, as far as securelevel goes) 398 * which leaves us with the normal check. 399 */ 400 if (error == 0) { 401 accessmode = VREAD; 402 if (update ? 403 (mp->mnt_iflag & IMNT_WANTRDWR) != 0 : 404 (mp->mnt_flag & MNT_RDONLY) == 0) 405 accessmode |= VWRITE; 406 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 407 error = genfs_can_mount(devvp, accessmode, l->l_cred); 408 VOP_UNLOCK(devvp); 409 } 410 411 if (error) { 412 vrele(devvp); 413 return (error); 414 } 415 416#ifdef WAPBL 417 /* WAPBL can only be enabled on a r/w mount. */ 418 if ((mp->mnt_flag & MNT_RDONLY) && !(mp->mnt_iflag & IMNT_WANTRDWR)) { 419 mp->mnt_flag &= ~MNT_LOG; 420 } 421#else /* !WAPBL */ 422 mp->mnt_flag &= ~MNT_LOG; 423#endif /* !WAPBL */ 424 425 if (!update) { 426 int xflags; 427 428 if (mp->mnt_flag & MNT_RDONLY) 429 xflags = FREAD; 430 else 431 xflags = FREAD | FWRITE; 432 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 433 error = VOP_OPEN(devvp, xflags, FSCRED); 434 VOP_UNLOCK(devvp); 435 if (error) 436 goto fail; 437 error = ffs_mountfs(devvp, mp, l); 438 if (error) { 439 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 440 (void)VOP_CLOSE(devvp, xflags, NOCRED); 441 VOP_UNLOCK(devvp); 442 goto fail; 443 } 444 445 ump = VFSTOUFS(mp); 446 fs = ump->um_fs; 447 } else { 448 /* 449 * Update the mount. 450 */ 451 452 /* 453 * The initial mount got a reference on this 454 * device, so drop the one obtained via 455 * namei(), above. 456 */ 457 vrele(devvp); 458 459 ump = VFSTOUFS(mp); 460 fs = ump->um_fs; 461 if (fs->fs_ronly == 0 && (mp->mnt_flag & MNT_RDONLY)) { 462 /* 463 * Changing from r/w to r/o 464 */ 465 flags = WRITECLOSE; 466 if (mp->mnt_flag & MNT_FORCE) 467 flags |= FORCECLOSE; 468 error = ffs_flushfiles(mp, flags, l); 469 if (error == 0) 470 error = UFS_WAPBL_BEGIN(mp); 471 if (error == 0 && 472 ffs_cgupdate(ump, MNT_WAIT) == 0 && 473 fs->fs_clean & FS_WASCLEAN) { 474 if (mp->mnt_flag & MNT_SOFTDEP) 475 fs->fs_flags &= ~FS_DOSOFTDEP; 476 fs->fs_clean = FS_ISCLEAN; 477 (void) ffs_sbupdate(ump, MNT_WAIT); 478 } 479 if (error == 0) 480 UFS_WAPBL_END(mp); 481 if (error) 482 return (error); 483 } 484 485#ifdef WAPBL 486 if ((mp->mnt_flag & MNT_LOG) == 0) { 487 error = ffs_wapbl_stop(mp, mp->mnt_flag & MNT_FORCE); 488 if (error) 489 return error; 490 } 491#endif /* WAPBL */ 492 493 if (fs->fs_ronly == 0 && (mp->mnt_flag & MNT_RDONLY)) { 494 /* 495 * Finish change from r/w to r/o 496 */ 497 fs->fs_ronly = 1; 498 fs->fs_fmod = 0; 499 } 500 501 if (mp->mnt_flag & MNT_RELOAD) { 502 error = ffs_reload(mp, l->l_cred, l); 503 if (error) 504 return (error); 505 } 506 507 if (fs->fs_ronly && (mp->mnt_iflag & IMNT_WANTRDWR)) { 508 /* 509 * Changing from read-only to read/write 510 */ 511#ifndef QUOTA2 512 if (fs->fs_flags & FS_DOQUOTA2) { 513 ump->um_flags |= UFS_QUOTA2; 514 uprintf("%s: options QUOTA2 not enabled%s\n", 515 mp->mnt_stat.f_mntonname, 516 (mp->mnt_flag & MNT_FORCE) ? "" : 517 ", not mounting"); 518 return EINVAL; 519 } 520#endif 521 fs->fs_ronly = 0; 522 fs->fs_clean <<= 1; 523 fs->fs_fmod = 1; 524#ifdef WAPBL 525 if (fs->fs_flags & FS_DOWAPBL) { 526 printf("%s: replaying log to disk\n", 527 fs->fs_fsmnt); 528 KDASSERT(mp->mnt_wapbl_replay); 529 error = wapbl_replay_write(mp->mnt_wapbl_replay, 530 devvp); 531 if (error) { 532 return error; 533 } 534 wapbl_replay_stop(mp->mnt_wapbl_replay); 535 fs->fs_clean = FS_WASCLEAN; 536 } 537#endif /* WAPBL */ 538 if (fs->fs_snapinum[0] != 0) 539 ffs_snapshot_mount(mp); 540 } 541 542#ifdef WAPBL 543 error = ffs_wapbl_start(mp); 544 if (error) 545 return error; 546#endif /* WAPBL */ 547 548#ifdef QUOTA2 549 if (!fs->fs_ronly) { 550 error = ffs_quota2_mount(mp); 551 if (error) { 552 return error; 553 } 554 } 555#endif 556 if (args->fspec == NULL) 557 return 0; 558 } 559 560 error = set_statvfs_info(path, UIO_USERSPACE, args->fspec, 561 UIO_USERSPACE, mp->mnt_op->vfs_name, mp, l); 562 if (error == 0) 563 (void)strncpy(fs->fs_fsmnt, mp->mnt_stat.f_mntonname, 564 sizeof(fs->fs_fsmnt)); 565 fs->fs_flags &= ~FS_DOSOFTDEP; 566 if (fs->fs_fmod != 0) { /* XXX */ 567 int err; 568 569 fs->fs_fmod = 0; 570 if (fs->fs_clean & FS_WASCLEAN) 571 fs->fs_time = time_second; 572 else { 573 printf("%s: file system not clean (fs_clean=%#x); " 574 "please fsck(8)\n", mp->mnt_stat.f_mntfromname, 575 fs->fs_clean); 576 printf("%s: lost blocks %" PRId64 " files %d\n", 577 mp->mnt_stat.f_mntfromname, fs->fs_pendingblocks, 578 fs->fs_pendinginodes); 579 } 580 err = UFS_WAPBL_BEGIN(mp); 581 if (err == 0) { 582 (void) ffs_cgupdate(ump, MNT_WAIT); 583 UFS_WAPBL_END(mp); 584 } 585 } 586 if ((mp->mnt_flag & MNT_SOFTDEP) != 0) { 587 printf("%s: `-o softdep' is no longer supported, " 588 "consider `-o log'\n", mp->mnt_stat.f_mntfromname); 589 mp->mnt_flag &= ~MNT_SOFTDEP; 590 } 591 592 return (error); 593 594fail: 595 vrele(devvp); 596 return (error); 597} 598 599/* 600 * Reload all incore data for a filesystem (used after running fsck on 601 * the root filesystem and finding things to fix). The filesystem must 602 * be mounted read-only. 603 * 604 * Things to do to update the mount: 605 * 1) invalidate all cached meta-data. 606 * 2) re-read superblock from disk. 607 * 3) re-read summary information from disk. 608 * 4) invalidate all inactive vnodes. 609 * 5) invalidate all cached file data. 610 * 6) re-read inode data for all active vnodes. 611 */ 612int 613ffs_reload(struct mount *mp, kauth_cred_t cred, struct lwp *l) 614{ 615 struct vnode *vp, *mvp, *devvp; 616 struct inode *ip; 617 void *space; 618 struct buf *bp; 619 struct fs *fs, *newfs; 620 struct dkwedge_info dkw; 621 int i, bsize, blks, error; 622 int32_t *lp; 623 struct ufsmount *ump; 624 daddr_t sblockloc; 625 626 if ((mp->mnt_flag & MNT_RDONLY) == 0) 627 return (EINVAL); 628 629 ump = VFSTOUFS(mp); 630 /* 631 * Step 1: invalidate all cached meta-data. 632 */ 633 devvp = ump->um_devvp; 634 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 635 error = vinvalbuf(devvp, 0, cred, l, 0, 0); 636 VOP_UNLOCK(devvp); 637 if (error) 638 panic("ffs_reload: dirty1"); 639 /* 640 * Step 2: re-read superblock from disk. 641 */ 642 fs = ump->um_fs; 643 644 /* XXX we don't handle possibility that superblock moved. */ 645 error = bread(devvp, fs->fs_sblockloc / DEV_BSIZE, fs->fs_sbsize, 646 NOCRED, 0, &bp); 647 if (error) { 648 brelse(bp, 0); 649 return (error); 650 } 651 newfs = malloc(fs->fs_sbsize, M_UFSMNT, M_WAITOK); 652 memcpy(newfs, bp->b_data, fs->fs_sbsize); 653#ifdef FFS_EI 654 if (ump->um_flags & UFS_NEEDSWAP) { 655 ffs_sb_swap((struct fs*)bp->b_data, newfs); 656 fs->fs_flags |= FS_SWAPPED; 657 } else 658#endif 659 fs->fs_flags &= ~FS_SWAPPED; 660 if ((newfs->fs_magic != FS_UFS1_MAGIC && 661 newfs->fs_magic != FS_UFS2_MAGIC)|| 662 newfs->fs_bsize > MAXBSIZE || 663 newfs->fs_bsize < sizeof(struct fs)) { 664 brelse(bp, 0); 665 free(newfs, M_UFSMNT); 666 return (EIO); /* XXX needs translation */ 667 } 668 /* Store off old fs_sblockloc for fs_oldfscompat_read. */ 669 sblockloc = fs->fs_sblockloc; 670 /* 671 * Copy pointer fields back into superblock before copying in XXX 672 * new superblock. These should really be in the ufsmount. XXX 673 * Note that important parameters (eg fs_ncg) are unchanged. 674 */ 675 newfs->fs_csp = fs->fs_csp; 676 newfs->fs_maxcluster = fs->fs_maxcluster; 677 newfs->fs_contigdirs = fs->fs_contigdirs; 678 newfs->fs_ronly = fs->fs_ronly; 679 newfs->fs_active = fs->fs_active; 680 memcpy(fs, newfs, (u_int)fs->fs_sbsize); 681 brelse(bp, 0); 682 free(newfs, M_UFSMNT); 683 684 /* Recheck for apple UFS filesystem */ 685 ump->um_flags &= ~UFS_ISAPPLEUFS; 686 /* First check to see if this is tagged as an Apple UFS filesystem 687 * in the disklabel 688 */ 689 if (getdiskinfo(devvp, &dkw) == 0 && 690 strcmp(dkw.dkw_ptype, DKW_PTYPE_APPLEUFS) == 0) 691 ump->um_flags |= UFS_ISAPPLEUFS; 692#ifdef APPLE_UFS 693 else { 694 /* Manually look for an apple ufs label, and if a valid one 695 * is found, then treat it like an Apple UFS filesystem anyway 696 * 697 * EINVAL is most probably a blocksize or alignment problem, 698 * it is unlikely that this is an Apple UFS filesystem then. 699 */ 700 error = bread(devvp, (daddr_t)(APPLEUFS_LABEL_OFFSET / DEV_BSIZE), 701 APPLEUFS_LABEL_SIZE, cred, 0, &bp); 702 if (error && error != EINVAL) { 703 brelse(bp, 0); 704 return (error); 705 } 706 if (error == 0) { 707 error = ffs_appleufs_validate(fs->fs_fsmnt, 708 (struct appleufslabel *)bp->b_data, NULL); 709 if (error == 0) 710 ump->um_flags |= UFS_ISAPPLEUFS; 711 } 712 brelse(bp, 0); 713 bp = NULL; 714 } 715#else 716 if (ump->um_flags & UFS_ISAPPLEUFS) 717 return (EIO); 718#endif 719 720 if (UFS_MPISAPPLEUFS(ump)) { 721 /* see comment about NeXT below */ 722 ump->um_maxsymlinklen = APPLEUFS_MAXSYMLINKLEN; 723 ump->um_dirblksiz = APPLEUFS_DIRBLKSIZ; 724 mp->mnt_iflag |= IMNT_DTYPE; 725 } else { 726 ump->um_maxsymlinklen = fs->fs_maxsymlinklen; 727 ump->um_dirblksiz = DIRBLKSIZ; 728 if (ump->um_maxsymlinklen > 0) 729 mp->mnt_iflag |= IMNT_DTYPE; 730 else 731 mp->mnt_iflag &= ~IMNT_DTYPE; 732 } 733 ffs_oldfscompat_read(fs, ump, sblockloc); 734 735 mutex_enter(&ump->um_lock); 736 ump->um_maxfilesize = fs->fs_maxfilesize; 737 if (fs->fs_flags & ~(FS_KNOWN_FLAGS | FS_INTERNAL)) { 738 uprintf("%s: unknown ufs flags: 0x%08"PRIx32"%s\n", 739 mp->mnt_stat.f_mntonname, fs->fs_flags, 740 (mp->mnt_flag & MNT_FORCE) ? "" : ", not mounting"); 741 if ((mp->mnt_flag & MNT_FORCE) == 0) { 742 mutex_exit(&ump->um_lock); 743 return (EINVAL); 744 } 745 } 746 if (fs->fs_pendingblocks != 0 || fs->fs_pendinginodes != 0) { 747 fs->fs_pendingblocks = 0; 748 fs->fs_pendinginodes = 0; 749 } 750 mutex_exit(&ump->um_lock); 751 752 ffs_statvfs(mp, &mp->mnt_stat); 753 /* 754 * Step 3: re-read summary information from disk. 755 */ 756 blks = howmany(fs->fs_cssize, fs->fs_fsize); 757 space = fs->fs_csp; 758 for (i = 0; i < blks; i += fs->fs_frag) { 759 bsize = fs->fs_bsize; 760 if (i + fs->fs_frag > blks) 761 bsize = (blks - i) * fs->fs_fsize; 762 error = bread(devvp, fsbtodb(fs, fs->fs_csaddr + i), bsize, 763 NOCRED, 0, &bp); 764 if (error) { 765 brelse(bp, 0); 766 return (error); 767 } 768#ifdef FFS_EI 769 if (UFS_FSNEEDSWAP(fs)) 770 ffs_csum_swap((struct csum *)bp->b_data, 771 (struct csum *)space, bsize); 772 else 773#endif 774 memcpy(space, bp->b_data, (size_t)bsize); 775 space = (char *)space + bsize; 776 brelse(bp, 0); 777 } 778 if (fs->fs_snapinum[0] != 0) 779 ffs_snapshot_mount(mp); 780 /* 781 * We no longer know anything about clusters per cylinder group. 782 */ 783 if (fs->fs_contigsumsize > 0) { 784 lp = fs->fs_maxcluster; 785 for (i = 0; i < fs->fs_ncg; i++) 786 *lp++ = fs->fs_contigsumsize; 787 } 788 789 /* Allocate a marker vnode. */ 790 mvp = vnalloc(mp); 791 /* 792 * NOTE: not using the TAILQ_FOREACH here since in this loop vgone() 793 * and vclean() can be called indirectly 794 */ 795 mutex_enter(&mntvnode_lock); 796 loop: 797 for (vp = TAILQ_FIRST(&mp->mnt_vnodelist); vp; vp = vunmark(mvp)) { 798 vmark(mvp, vp); 799 if (vp->v_mount != mp || vismarker(vp)) 800 continue; 801 /* 802 * Step 4: invalidate all inactive vnodes. 803 */ 804 if (vrecycle(vp, &mntvnode_lock, l)) { 805 mutex_enter(&mntvnode_lock); 806 (void)vunmark(mvp); 807 goto loop; 808 } 809 /* 810 * Step 5: invalidate all cached file data. 811 */ 812 mutex_enter(vp->v_interlock); 813 mutex_exit(&mntvnode_lock); 814 if (vget(vp, LK_EXCLUSIVE)) { 815 (void)vunmark(mvp); 816 goto loop; 817 } 818 if (vinvalbuf(vp, 0, cred, l, 0, 0)) 819 panic("ffs_reload: dirty2"); 820 /* 821 * Step 6: re-read inode data for all active vnodes. 822 */ 823 ip = VTOI(vp); 824 error = bread(devvp, fsbtodb(fs, ino_to_fsba(fs, ip->i_number)), 825 (int)fs->fs_bsize, NOCRED, 0, &bp); 826 if (error) { 827 brelse(bp, 0); 828 vput(vp); 829 (void)vunmark(mvp); 830 break; 831 } 832 ffs_load_inode(bp, ip, fs, ip->i_number); 833 brelse(bp, 0); 834 vput(vp); 835 mutex_enter(&mntvnode_lock); 836 } 837 mutex_exit(&mntvnode_lock); 838 vnfree(mvp); 839 return (error); 840} 841 842/* 843 * Possible superblock locations ordered from most to least likely. 844 */ 845static const int sblock_try[] = SBLOCKSEARCH; 846 847/* 848 * Common code for mount and mountroot 849 */ 850int 851ffs_mountfs(struct vnode *devvp, struct mount *mp, struct lwp *l) 852{ 853 struct ufsmount *ump; 854 struct buf *bp; 855 struct fs *fs; 856 dev_t dev; 857 struct dkwedge_info dkw; 858 void *space; 859 daddr_t sblockloc, fsblockloc; 860 int blks, fstype; 861 int error, i, bsize, ronly, bset = 0; 862#ifdef FFS_EI 863 int needswap = 0; /* keep gcc happy */ 864#endif 865 int32_t *lp; 866 kauth_cred_t cred; 867 u_int32_t sbsize = 8192; /* keep gcc happy*/ 868 int32_t fsbsize; 869 870 dev = devvp->v_rdev; 871 cred = l ? l->l_cred : NOCRED; 872 873 /* Flush out any old buffers remaining from a previous use. */ 874 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 875 error = vinvalbuf(devvp, V_SAVE, cred, l, 0, 0); 876 VOP_UNLOCK(devvp); 877 if (error) 878 return (error); 879 880 ronly = (mp->mnt_flag & MNT_RDONLY) != 0; 881 882 bp = NULL; 883 ump = NULL; 884 fs = NULL; 885 sblockloc = 0; 886 fstype = 0; 887 888 error = fstrans_mount(mp); 889 if (error) 890 return error; 891 892 ump = malloc(sizeof *ump, M_UFSMNT, M_WAITOK); 893 memset(ump, 0, sizeof *ump); 894 mutex_init(&ump->um_lock, MUTEX_DEFAULT, IPL_NONE); 895 error = ffs_snapshot_init(ump); 896 if (error) 897 goto out; 898 ump->um_ops = &ffs_ufsops; 899 900#ifdef WAPBL 901 sbagain: 902#endif 903 /* 904 * Try reading the superblock in each of its possible locations. 905 */ 906 for (i = 0; ; i++) { 907 if (bp != NULL) { 908 brelse(bp, BC_NOCACHE); 909 bp = NULL; 910 } 911 if (sblock_try[i] == -1) { 912 error = EINVAL; 913 fs = NULL; 914 goto out; 915 } 916 error = bread(devvp, sblock_try[i] / DEV_BSIZE, SBLOCKSIZE, cred, 917 0, &bp); 918 if (error) { 919 fs = NULL; 920 goto out; 921 } 922 fs = (struct fs*)bp->b_data; 923 fsblockloc = sblockloc = sblock_try[i]; 924 if (fs->fs_magic == FS_UFS1_MAGIC) { 925 sbsize = fs->fs_sbsize; 926 fstype = UFS1; 927 fsbsize = fs->fs_bsize; 928#ifdef FFS_EI 929 needswap = 0; 930 } else if (fs->fs_magic == bswap32(FS_UFS1_MAGIC)) { 931 sbsize = bswap32(fs->fs_sbsize); 932 fstype = UFS1; 933 fsbsize = bswap32(fs->fs_bsize); 934 needswap = 1; 935#endif 936 } else if (fs->fs_magic == FS_UFS2_MAGIC) { 937 sbsize = fs->fs_sbsize; 938 fstype = UFS2; 939 fsbsize = fs->fs_bsize; 940#ifdef FFS_EI 941 needswap = 0; 942 } else if (fs->fs_magic == bswap32(FS_UFS2_MAGIC)) { 943 sbsize = bswap32(fs->fs_sbsize); 944 fstype = UFS2; 945 fsbsize = bswap32(fs->fs_bsize); 946 needswap = 1; 947#endif 948 } else 949 continue; 950 951 952 /* fs->fs_sblockloc isn't defined for old filesystems */ 953 if (fstype == UFS1 && !(fs->fs_old_flags & FS_FLAGS_UPDATED)) { 954 if (sblockloc == SBLOCK_UFS2) 955 /* 956 * This is likely to be the first alternate 957 * in a filesystem with 64k blocks. 958 * Don't use it. 959 */ 960 continue; 961 fsblockloc = sblockloc; 962 } else { 963 fsblockloc = fs->fs_sblockloc; 964#ifdef FFS_EI 965 if (needswap) 966 fsblockloc = bswap64(fsblockloc); 967#endif 968 } 969 970 /* Check we haven't found an alternate superblock */ 971 if (fsblockloc != sblockloc) 972 continue; 973 974 /* Validate size of superblock */ 975 if (sbsize > MAXBSIZE || sbsize < sizeof(struct fs)) 976 continue; 977 978 /* Check that we can handle the file system blocksize */ 979 if (fsbsize > MAXBSIZE) { 980 printf("ffs_mountfs: block size (%d) > MAXBSIZE (%d)\n", 981 fsbsize, MAXBSIZE); 982 continue; 983 } 984 985 /* Ok seems to be a good superblock */ 986 break; 987 } 988 989 fs = malloc((u_long)sbsize, M_UFSMNT, M_WAITOK); 990 memcpy(fs, bp->b_data, sbsize); 991 ump->um_fs = fs; 992 993#ifdef FFS_EI 994 if (needswap) { 995 ffs_sb_swap((struct fs*)bp->b_data, fs); 996 fs->fs_flags |= FS_SWAPPED; 997 } else 998#endif 999 fs->fs_flags &= ~FS_SWAPPED; 1000 1001#ifdef WAPBL 1002 if ((mp->mnt_wapbl_replay == 0) && (fs->fs_flags & FS_DOWAPBL)) { 1003 error = ffs_wapbl_replay_start(mp, fs, devvp); 1004 if (error && (mp->mnt_flag & MNT_FORCE) == 0) 1005 goto out; 1006 if (!error) { 1007 if (!ronly) { 1008 /* XXX fsmnt may be stale. */ 1009 printf("%s: replaying log to disk\n", 1010 fs->fs_fsmnt); 1011 error = wapbl_replay_write(mp->mnt_wapbl_replay, 1012 devvp); 1013 if (error) 1014 goto out; 1015 wapbl_replay_stop(mp->mnt_wapbl_replay); 1016 fs->fs_clean = FS_WASCLEAN; 1017 } else { 1018 /* XXX fsmnt may be stale */ 1019 printf("%s: replaying log to memory\n", 1020 fs->fs_fsmnt); 1021 } 1022 1023 /* Force a re-read of the superblock */ 1024 brelse(bp, BC_INVAL); 1025 bp = NULL; 1026 free(fs, M_UFSMNT); 1027 fs = NULL; 1028 goto sbagain; 1029 } 1030 } 1031#else /* !WAPBL */ 1032 if ((fs->fs_flags & FS_DOWAPBL) && (mp->mnt_flag & MNT_FORCE) == 0) { 1033 error = EPERM; 1034 goto out; 1035 } 1036#endif /* !WAPBL */ 1037 1038 ffs_oldfscompat_read(fs, ump, sblockloc); 1039 ump->um_maxfilesize = fs->fs_maxfilesize; 1040 1041 if (fs->fs_flags & ~(FS_KNOWN_FLAGS | FS_INTERNAL)) { 1042 uprintf("%s: unknown ufs flags: 0x%08"PRIx32"%s\n", 1043 mp->mnt_stat.f_mntonname, fs->fs_flags, 1044 (mp->mnt_flag & MNT_FORCE) ? "" : ", not mounting"); 1045 if ((mp->mnt_flag & MNT_FORCE) == 0) { 1046 error = EINVAL; 1047 goto out; 1048 } 1049 } 1050 1051 if (fs->fs_pendingblocks != 0 || fs->fs_pendinginodes != 0) { 1052 fs->fs_pendingblocks = 0; 1053 fs->fs_pendinginodes = 0; 1054 } 1055 1056 ump->um_fstype = fstype; 1057 if (fs->fs_sbsize < SBLOCKSIZE) 1058 brelse(bp, BC_INVAL); 1059 else 1060 brelse(bp, 0); 1061 bp = NULL; 1062 1063 /* First check to see if this is tagged as an Apple UFS filesystem 1064 * in the disklabel 1065 */ 1066 if (getdiskinfo(devvp, &dkw) == 0 && 1067 strcmp(dkw.dkw_ptype, DKW_PTYPE_APPLEUFS) == 0) 1068 ump->um_flags |= UFS_ISAPPLEUFS; 1069#ifdef APPLE_UFS 1070 else { 1071 /* Manually look for an apple ufs label, and if a valid one 1072 * is found, then treat it like an Apple UFS filesystem anyway 1073 */ 1074 error = bread(devvp, (daddr_t)(APPLEUFS_LABEL_OFFSET / DEV_BSIZE), 1075 APPLEUFS_LABEL_SIZE, cred, 0, &bp); 1076 if (error) 1077 goto out; 1078 error = ffs_appleufs_validate(fs->fs_fsmnt, 1079 (struct appleufslabel *)bp->b_data, NULL); 1080 if (error == 0) { 1081 ump->um_flags |= UFS_ISAPPLEUFS; 1082 } 1083 brelse(bp, 0); 1084 bp = NULL; 1085 } 1086#else 1087 if (ump->um_flags & UFS_ISAPPLEUFS) { 1088 error = EINVAL; 1089 goto out; 1090 } 1091#endif 1092 1093#if 0 1094/* 1095 * XXX This code changes the behaviour of mounting dirty filesystems, to 1096 * XXX require "mount -f ..." to mount them. This doesn't match what 1097 * XXX mount(8) describes and is disabled for now. 1098 */ 1099 /* 1100 * If the file system is not clean, don't allow it to be mounted 1101 * unless MNT_FORCE is specified. (Note: MNT_FORCE is always set 1102 * for the root file system.) 1103 */ 1104 if (fs->fs_flags & FS_DOWAPBL) { 1105 /* 1106 * wapbl normally expects to be FS_WASCLEAN when the FS_DOWAPBL 1107 * bit is set, although there's a window in unmount where it 1108 * could be FS_ISCLEAN 1109 */ 1110 if ((mp->mnt_flag & MNT_FORCE) == 0 && 1111 (fs->fs_clean & (FS_WASCLEAN | FS_ISCLEAN)) == 0) { 1112 error = EPERM; 1113 goto out; 1114 } 1115 } else 1116 if ((fs->fs_clean & FS_ISCLEAN) == 0 && 1117 (mp->mnt_flag & MNT_FORCE) == 0) { 1118 error = EPERM; 1119 goto out; 1120 } 1121#endif 1122 1123 /* 1124 * verify that we can access the last block in the fs 1125 * if we're mounting read/write. 1126 */ 1127 1128 if (!ronly) { 1129 error = bread(devvp, fsbtodb(fs, fs->fs_size - 1), fs->fs_fsize, 1130 cred, 0, &bp); 1131 if (bp->b_bcount != fs->fs_fsize) 1132 error = EINVAL; 1133 if (error) { 1134 bset = BC_INVAL; 1135 goto out; 1136 } 1137 brelse(bp, BC_INVAL); 1138 bp = NULL; 1139 } 1140 1141 fs->fs_ronly = ronly; 1142 /* Don't bump fs_clean if we're replaying journal */ 1143 if (!((fs->fs_flags & FS_DOWAPBL) && (fs->fs_clean & FS_WASCLEAN))) 1144 if (ronly == 0) { 1145 fs->fs_clean <<= 1; 1146 fs->fs_fmod = 1; 1147 } 1148 bsize = fs->fs_cssize; 1149 blks = howmany(bsize, fs->fs_fsize); 1150 if (fs->fs_contigsumsize > 0) 1151 bsize += fs->fs_ncg * sizeof(int32_t); 1152 bsize += fs->fs_ncg * sizeof(*fs->fs_contigdirs); 1153 space = malloc((u_long)bsize, M_UFSMNT, M_WAITOK); 1154 fs->fs_csp = space; 1155 for (i = 0; i < blks; i += fs->fs_frag) { 1156 bsize = fs->fs_bsize; 1157 if (i + fs->fs_frag > blks) 1158 bsize = (blks - i) * fs->fs_fsize; 1159 error = bread(devvp, fsbtodb(fs, fs->fs_csaddr + i), bsize, 1160 cred, 0, &bp); 1161 if (error) { 1162 free(fs->fs_csp, M_UFSMNT); 1163 goto out; 1164 } 1165#ifdef FFS_EI 1166 if (needswap) 1167 ffs_csum_swap((struct csum *)bp->b_data, 1168 (struct csum *)space, bsize); 1169 else 1170#endif 1171 memcpy(space, bp->b_data, (u_int)bsize); 1172 1173 space = (char *)space + bsize; 1174 brelse(bp, 0); 1175 bp = NULL; 1176 } 1177 if (fs->fs_contigsumsize > 0) { 1178 fs->fs_maxcluster = lp = space; 1179 for (i = 0; i < fs->fs_ncg; i++) 1180 *lp++ = fs->fs_contigsumsize; 1181 space = lp; 1182 } 1183 bsize = fs->fs_ncg * sizeof(*fs->fs_contigdirs); 1184 fs->fs_contigdirs = space; 1185 space = (char *)space + bsize; 1186 memset(fs->fs_contigdirs, 0, bsize); 1187 /* Compatibility for old filesystems - XXX */ 1188 if (fs->fs_avgfilesize <= 0) 1189 fs->fs_avgfilesize = AVFILESIZ; 1190 if (fs->fs_avgfpdir <= 0) 1191 fs->fs_avgfpdir = AFPDIR; 1192 fs->fs_active = NULL; 1193 mp->mnt_data = ump; 1194 mp->mnt_stat.f_fsidx.__fsid_val[0] = (long)dev; 1195 mp->mnt_stat.f_fsidx.__fsid_val[1] = makefstype(MOUNT_FFS); 1196 mp->mnt_stat.f_fsid = mp->mnt_stat.f_fsidx.__fsid_val[0]; 1197 mp->mnt_stat.f_namemax = FFS_MAXNAMLEN; 1198 if (UFS_MPISAPPLEUFS(ump)) { 1199 /* NeXT used to keep short symlinks in the inode even 1200 * when using FS_42INODEFMT. In that case fs->fs_maxsymlinklen 1201 * is probably -1, but we still need to be able to identify 1202 * short symlinks. 1203 */ 1204 ump->um_maxsymlinklen = APPLEUFS_MAXSYMLINKLEN; 1205 ump->um_dirblksiz = APPLEUFS_DIRBLKSIZ; 1206 mp->mnt_iflag |= IMNT_DTYPE; 1207 } else { 1208 ump->um_maxsymlinklen = fs->fs_maxsymlinklen; 1209 ump->um_dirblksiz = DIRBLKSIZ; 1210 if (ump->um_maxsymlinklen > 0) 1211 mp->mnt_iflag |= IMNT_DTYPE; 1212 else 1213 mp->mnt_iflag &= ~IMNT_DTYPE; 1214 } 1215 mp->mnt_fs_bshift = fs->fs_bshift; 1216 mp->mnt_dev_bshift = DEV_BSHIFT; /* XXX */ 1217 mp->mnt_flag |= MNT_LOCAL; 1218 mp->mnt_iflag |= IMNT_MPSAFE; 1219#ifdef FFS_EI 1220 if (needswap) 1221 ump->um_flags |= UFS_NEEDSWAP; 1222#endif 1223 ump->um_mountp = mp; 1224 ump->um_dev = dev; 1225 ump->um_devvp = devvp; 1226 ump->um_nindir = fs->fs_nindir; 1227 ump->um_lognindir = ffs(fs->fs_nindir) - 1; 1228 ump->um_bptrtodb = fs->fs_fshift - DEV_BSHIFT; 1229 ump->um_seqinc = fs->fs_frag; 1230 for (i = 0; i < MAXQUOTAS; i++) 1231 ump->um_quotas[i] = NULLVP; 1232 devvp->v_specmountpoint = mp; 1233 if (ronly == 0 && fs->fs_snapinum[0] != 0) 1234 ffs_snapshot_mount(mp); 1235#ifdef WAPBL 1236 if (!ronly) { 1237 KDASSERT(fs->fs_ronly == 0); 1238 /* 1239 * ffs_wapbl_start() needs mp->mnt_stat initialised if it 1240 * needs to create a new log file in-filesystem. 1241 */ 1242 ffs_statvfs(mp, &mp->mnt_stat); 1243 1244 error = ffs_wapbl_start(mp); 1245 if (error) { 1246 free(fs->fs_csp, M_UFSMNT); 1247 goto out; 1248 } 1249 } 1250#endif /* WAPBL */ 1251 if (ronly == 0) { 1252#ifdef QUOTA2 1253 error = ffs_quota2_mount(mp); 1254 if (error) { 1255 free(fs->fs_csp, M_UFSMNT); 1256 goto out; 1257 } 1258#else 1259 if (fs->fs_flags & FS_DOQUOTA2) { 1260 ump->um_flags |= UFS_QUOTA2; 1261 uprintf("%s: options QUOTA2 not enabled%s\n", 1262 mp->mnt_stat.f_mntonname, 1263 (mp->mnt_flag & MNT_FORCE) ? "" : ", not mounting"); 1264 if ((mp->mnt_flag & MNT_FORCE) == 0) { 1265 error = EINVAL; 1266 free(fs->fs_csp, M_UFSMNT); 1267 goto out; 1268 } 1269 } 1270#endif 1271 } 1272#ifdef UFS_EXTATTR 1273 /* 1274 * Initialize file-backed extended attributes on UFS1 file 1275 * systems. 1276 */ 1277 if (ump->um_fstype == UFS1) 1278 ufs_extattr_uepm_init(&ump->um_extattr); 1279#endif /* UFS_EXTATTR */ 1280 1281 return (0); 1282out: 1283#ifdef WAPBL 1284 if (mp->mnt_wapbl_replay) { 1285 wapbl_replay_stop(mp->mnt_wapbl_replay); 1286 wapbl_replay_free(mp->mnt_wapbl_replay); 1287 mp->mnt_wapbl_replay = 0; 1288 } 1289#endif 1290 1291 fstrans_unmount(mp); 1292 if (fs) 1293 free(fs, M_UFSMNT); 1294 devvp->v_specmountpoint = NULL; 1295 if (bp) 1296 brelse(bp, bset); 1297 if (ump) { 1298 if (ump->um_oldfscompat) 1299 free(ump->um_oldfscompat, M_UFSMNT); 1300 mutex_destroy(&ump->um_lock); 1301 free(ump, M_UFSMNT); 1302 mp->mnt_data = NULL; 1303 } 1304 return (error); 1305} 1306 1307/* 1308 * Sanity checks for loading old filesystem superblocks. 1309 * See ffs_oldfscompat_write below for unwound actions. 1310 * 1311 * XXX - Parts get retired eventually. 1312 * Unfortunately new bits get added. 1313 */ 1314static void 1315ffs_oldfscompat_read(struct fs *fs, struct ufsmount *ump, daddr_t sblockloc) 1316{ 1317 off_t maxfilesize; 1318 int32_t *extrasave; 1319 1320 if ((fs->fs_magic != FS_UFS1_MAGIC) || 1321 (fs->fs_old_flags & FS_FLAGS_UPDATED)) 1322 return; 1323 1324 if (!ump->um_oldfscompat) 1325 ump->um_oldfscompat = malloc(512 + 3*sizeof(int32_t), 1326 M_UFSMNT, M_WAITOK); 1327 1328 memcpy(ump->um_oldfscompat, &fs->fs_old_postbl_start, 512); 1329 extrasave = ump->um_oldfscompat; 1330 extrasave += 512/sizeof(int32_t); 1331 extrasave[0] = fs->fs_old_npsect; 1332 extrasave[1] = fs->fs_old_interleave; 1333 extrasave[2] = fs->fs_old_trackskew; 1334 1335 /* These fields will be overwritten by their 1336 * original values in fs_oldfscompat_write, so it is harmless 1337 * to modify them here. 1338 */ 1339 fs->fs_cstotal.cs_ndir = fs->fs_old_cstotal.cs_ndir; 1340 fs->fs_cstotal.cs_nbfree = fs->fs_old_cstotal.cs_nbfree; 1341 fs->fs_cstotal.cs_nifree = fs->fs_old_cstotal.cs_nifree; 1342 fs->fs_cstotal.cs_nffree = fs->fs_old_cstotal.cs_nffree; 1343 1344 fs->fs_maxbsize = fs->fs_bsize; 1345 fs->fs_time = fs->fs_old_time; 1346 fs->fs_size = fs->fs_old_size; 1347 fs->fs_dsize = fs->fs_old_dsize; 1348 fs->fs_csaddr = fs->fs_old_csaddr; 1349 fs->fs_sblockloc = sblockloc; 1350 1351 fs->fs_flags = fs->fs_old_flags | (fs->fs_flags & FS_INTERNAL); 1352 1353 if (fs->fs_old_postblformat == FS_42POSTBLFMT) { 1354 fs->fs_old_nrpos = 8; 1355 fs->fs_old_npsect = fs->fs_old_nsect; 1356 fs->fs_old_interleave = 1; 1357 fs->fs_old_trackskew = 0; 1358 } 1359 1360 if (fs->fs_old_inodefmt < FS_44INODEFMT) { 1361 fs->fs_maxfilesize = (u_quad_t) 1LL << 39; 1362 fs->fs_qbmask = ~fs->fs_bmask; 1363 fs->fs_qfmask = ~fs->fs_fmask; 1364 } 1365 1366 maxfilesize = (u_int64_t)0x80000000 * fs->fs_bsize - 1; 1367 if (fs->fs_maxfilesize > maxfilesize) 1368 fs->fs_maxfilesize = maxfilesize; 1369 1370 /* Compatibility for old filesystems */ 1371 if (fs->fs_avgfilesize <= 0) 1372 fs->fs_avgfilesize = AVFILESIZ; 1373 if (fs->fs_avgfpdir <= 0) 1374 fs->fs_avgfpdir = AFPDIR; 1375 1376#if 0 1377 if (bigcgs) { 1378 fs->fs_save_cgsize = fs->fs_cgsize; 1379 fs->fs_cgsize = fs->fs_bsize; 1380 } 1381#endif 1382} 1383 1384/* 1385 * Unwinding superblock updates for old filesystems. 1386 * See ffs_oldfscompat_read above for details. 1387 * 1388 * XXX - Parts get retired eventually. 1389 * Unfortunately new bits get added. 1390 */ 1391static void 1392ffs_oldfscompat_write(struct fs *fs, struct ufsmount *ump) 1393{ 1394 int32_t *extrasave; 1395 1396 if ((fs->fs_magic != FS_UFS1_MAGIC) || 1397 (fs->fs_old_flags & FS_FLAGS_UPDATED)) 1398 return; 1399 1400 fs->fs_old_time = fs->fs_time; 1401 fs->fs_old_cstotal.cs_ndir = fs->fs_cstotal.cs_ndir; 1402 fs->fs_old_cstotal.cs_nbfree = fs->fs_cstotal.cs_nbfree; 1403 fs->fs_old_cstotal.cs_nifree = fs->fs_cstotal.cs_nifree; 1404 fs->fs_old_cstotal.cs_nffree = fs->fs_cstotal.cs_nffree; 1405 fs->fs_old_flags = fs->fs_flags; 1406 1407#if 0 1408 if (bigcgs) { 1409 fs->fs_cgsize = fs->fs_save_cgsize; 1410 } 1411#endif 1412 1413 memcpy(&fs->fs_old_postbl_start, ump->um_oldfscompat, 512); 1414 extrasave = ump->um_oldfscompat; 1415 extrasave += 512/sizeof(int32_t); 1416 fs->fs_old_npsect = extrasave[0]; 1417 fs->fs_old_interleave = extrasave[1]; 1418 fs->fs_old_trackskew = extrasave[2]; 1419 1420} 1421 1422/* 1423 * unmount vfs operation 1424 */ 1425int 1426ffs_unmount(struct mount *mp, int mntflags) 1427{ 1428 struct lwp *l = curlwp; 1429 struct ufsmount *ump = VFSTOUFS(mp); 1430 struct fs *fs = ump->um_fs; 1431 int error, flags; 1432#ifdef WAPBL 1433 extern int doforce; 1434#endif 1435 1436 flags = 0; 1437 if (mntflags & MNT_FORCE) 1438 flags |= FORCECLOSE; 1439 if ((error = ffs_flushfiles(mp, flags, l)) != 0) 1440 return (error); 1441 error = UFS_WAPBL_BEGIN(mp); 1442 if (error == 0) 1443 if (fs->fs_ronly == 0 && 1444 ffs_cgupdate(ump, MNT_WAIT) == 0 && 1445 fs->fs_clean & FS_WASCLEAN) { 1446 fs->fs_clean = FS_ISCLEAN; 1447 fs->fs_fmod = 0; 1448 (void) ffs_sbupdate(ump, MNT_WAIT); 1449 } 1450 if (error == 0) 1451 UFS_WAPBL_END(mp); 1452#ifdef WAPBL 1453 KASSERT(!(mp->mnt_wapbl_replay && mp->mnt_wapbl)); 1454 if (mp->mnt_wapbl_replay) { 1455 KDASSERT(fs->fs_ronly); 1456 wapbl_replay_stop(mp->mnt_wapbl_replay); 1457 wapbl_replay_free(mp->mnt_wapbl_replay); 1458 mp->mnt_wapbl_replay = 0; 1459 } 1460 error = ffs_wapbl_stop(mp, doforce && (mntflags & MNT_FORCE)); 1461 if (error) { 1462 return error; 1463 } 1464#endif /* WAPBL */ 1465#ifdef UFS_EXTATTR 1466 if (ump->um_fstype == UFS1) { 1467 ufs_extattr_stop(mp, l); 1468 ufs_extattr_uepm_destroy(&ump->um_extattr); 1469 } 1470#endif /* UFS_EXTATTR */ 1471 1472 if (ump->um_devvp->v_type != VBAD) 1473 ump->um_devvp->v_specmountpoint = NULL; 1474 vn_lock(ump->um_devvp, LK_EXCLUSIVE | LK_RETRY); 1475 (void)VOP_CLOSE(ump->um_devvp, fs->fs_ronly ? FREAD : FREAD | FWRITE, 1476 NOCRED); 1477 vput(ump->um_devvp); 1478 free(fs->fs_csp, M_UFSMNT); 1479 free(fs, M_UFSMNT); 1480 if (ump->um_oldfscompat != NULL) 1481 free(ump->um_oldfscompat, M_UFSMNT); 1482 mutex_destroy(&ump->um_lock); 1483 ffs_snapshot_fini(ump); 1484 free(ump, M_UFSMNT); 1485 mp->mnt_data = NULL; 1486 mp->mnt_flag &= ~MNT_LOCAL; 1487 fstrans_unmount(mp); 1488 return (0); 1489} 1490 1491/* 1492 * Flush out all the files in a filesystem. 1493 */ 1494int 1495ffs_flushfiles(struct mount *mp, int flags, struct lwp *l) 1496{ 1497 extern int doforce; 1498 struct ufsmount *ump; 1499 int error; 1500 1501 if (!doforce) 1502 flags &= ~FORCECLOSE; 1503 ump = VFSTOUFS(mp); 1504#ifdef QUOTA 1505 if ((error = quota1_umount(mp, flags)) != 0) 1506 return (error); 1507#endif 1508#ifdef QUOTA2 1509 if ((error = quota2_umount(mp, flags)) != 0) 1510 return (error); 1511#endif 1512 if ((error = vflush(mp, 0, SKIPSYSTEM | flags)) != 0) 1513 return (error); 1514 ffs_snapshot_unmount(mp); 1515 /* 1516 * Flush all the files. 1517 */ 1518 error = vflush(mp, NULLVP, flags); 1519 if (error) 1520 return (error); 1521 /* 1522 * Flush filesystem metadata. 1523 */ 1524 vn_lock(ump->um_devvp, LK_EXCLUSIVE | LK_RETRY); 1525 error = VOP_FSYNC(ump->um_devvp, l->l_cred, FSYNC_WAIT, 0, 0); 1526 VOP_UNLOCK(ump->um_devvp); 1527 if (flags & FORCECLOSE) /* XXXDBJ */ 1528 error = 0; 1529 1530#ifdef WAPBL 1531 if (error) 1532 return error; 1533 if (mp->mnt_wapbl) { 1534 error = wapbl_flush(mp->mnt_wapbl, 1); 1535 if (flags & FORCECLOSE) 1536 error = 0; 1537 } 1538#endif 1539 1540 return (error); 1541} 1542 1543/* 1544 * Get file system statistics. 1545 */ 1546int 1547ffs_statvfs(struct mount *mp, struct statvfs *sbp) 1548{ 1549 struct ufsmount *ump; 1550 struct fs *fs; 1551 1552 ump = VFSTOUFS(mp); 1553 fs = ump->um_fs; 1554 mutex_enter(&ump->um_lock); 1555 sbp->f_bsize = fs->fs_bsize; 1556 sbp->f_frsize = fs->fs_fsize; 1557 sbp->f_iosize = fs->fs_bsize; 1558 sbp->f_blocks = fs->fs_dsize; 1559 sbp->f_bfree = blkstofrags(fs, fs->fs_cstotal.cs_nbfree) + 1560 fs->fs_cstotal.cs_nffree + dbtofsb(fs, fs->fs_pendingblocks); 1561 sbp->f_bresvd = ((u_int64_t) fs->fs_dsize * (u_int64_t) 1562 fs->fs_minfree) / (u_int64_t) 100; 1563 if (sbp->f_bfree > sbp->f_bresvd) 1564 sbp->f_bavail = sbp->f_bfree - sbp->f_bresvd; 1565 else 1566 sbp->f_bavail = 0; 1567 sbp->f_files = fs->fs_ncg * fs->fs_ipg - ROOTINO; 1568 sbp->f_ffree = fs->fs_cstotal.cs_nifree + fs->fs_pendinginodes; 1569 sbp->f_favail = sbp->f_ffree; 1570 sbp->f_fresvd = 0; 1571 mutex_exit(&ump->um_lock); 1572 copy_statvfs_info(sbp, mp); 1573 1574 return (0); 1575} 1576 1577/* 1578 * Go through the disk queues to initiate sandbagged IO; 1579 * go through the inodes to write those that have been modified; 1580 * initiate the writing of the super block if it has been modified. 1581 * 1582 * Note: we are always called with the filesystem marked `MPBUSY'. 1583 */ 1584int 1585ffs_sync(struct mount *mp, int waitfor, kauth_cred_t cred) 1586{ 1587 struct vnode *vp, *mvp, *nvp; 1588 struct inode *ip; 1589 struct ufsmount *ump = VFSTOUFS(mp); 1590 struct fs *fs; 1591 int error, allerror = 0; 1592 bool is_suspending; 1593 1594 fs = ump->um_fs; 1595 if (fs->fs_fmod != 0 && fs->fs_ronly != 0) { /* XXX */ 1596 printf("fs = %s\n", fs->fs_fsmnt); 1597 panic("update: rofs mod"); 1598 } 1599 1600 /* Allocate a marker vnode. */ 1601 mvp = vnalloc(mp); 1602 1603 fstrans_start(mp, FSTRANS_SHARED); 1604 is_suspending = (fstrans_getstate(mp) == FSTRANS_SUSPENDING); 1605 /* 1606 * Write back each (modified) inode. 1607 */ 1608 mutex_enter(&mntvnode_lock); 1609loop: 1610 /* 1611 * NOTE: not using the TAILQ_FOREACH here since in this loop vgone() 1612 * and vclean() can be called indirectly 1613 */ 1614 for (vp = TAILQ_FIRST(&mp->mnt_vnodelist); vp; vp = nvp) { 1615 nvp = TAILQ_NEXT(vp, v_mntvnodes); 1616 /* 1617 * If the vnode that we are about to sync is no longer 1618 * associated with this mount point, start over. 1619 */ 1620 if (vp->v_mount != mp) 1621 goto loop; 1622 /* 1623 * Don't interfere with concurrent scans of this FS. 1624 */ 1625 if (vismarker(vp)) 1626 continue; 1627 mutex_enter(vp->v_interlock); 1628 ip = VTOI(vp); 1629 1630 /* 1631 * Skip the vnode/inode if inaccessible. 1632 */ 1633 if (ip == NULL || (vp->v_iflag & (VI_XLOCK | VI_CLEAN)) != 0 || 1634 vp->v_type == VNON) { 1635 mutex_exit(vp->v_interlock); 1636 continue; 1637 } 1638 1639 /* 1640 * We deliberately update inode times here. This will 1641 * prevent a massive queue of updates accumulating, only 1642 * to be handled by a call to unmount. 1643 * 1644 * XXX It would be better to have the syncer trickle these 1645 * out. Adjustment needed to allow registering vnodes for 1646 * sync when the vnode is clean, but the inode dirty. Or 1647 * have ufs itself trickle out inode updates. 1648 * 1649 * If doing a lazy sync, we don't care about metadata or 1650 * data updates, because they are handled by each vnode's 1651 * synclist entry. In this case we are only interested in 1652 * writing back modified inodes. 1653 */ 1654 if ((ip->i_flag & (IN_ACCESS | IN_CHANGE | IN_UPDATE | 1655 IN_MODIFY | IN_MODIFIED | IN_ACCESSED)) == 0 && 1656 (waitfor == MNT_LAZY || (LIST_EMPTY(&vp->v_dirtyblkhd) && 1657 UVM_OBJ_IS_CLEAN(&vp->v_uobj)))) { 1658 mutex_exit(vp->v_interlock); 1659 continue; 1660 } 1661 if (vp->v_type == VBLK && is_suspending) { 1662 mutex_exit(vp->v_interlock); 1663 continue; 1664 } 1665 vmark(mvp, vp); 1666 mutex_exit(&mntvnode_lock); 1667 error = vget(vp, LK_EXCLUSIVE | LK_NOWAIT); 1668 if (error) { 1669 mutex_enter(&mntvnode_lock); 1670 nvp = vunmark(mvp); 1671 if (error == ENOENT) { 1672 goto loop; 1673 } 1674 continue; 1675 } 1676 if (waitfor == MNT_LAZY) { 1677 error = UFS_WAPBL_BEGIN(vp->v_mount); 1678 if (!error) { 1679 error = ffs_update(vp, NULL, NULL, 1680 UPDATE_CLOSE); 1681 UFS_WAPBL_END(vp->v_mount); 1682 } 1683 } else { 1684 error = VOP_FSYNC(vp, cred, FSYNC_NOLOG | 1685 (waitfor == MNT_WAIT ? FSYNC_WAIT : 0), 0, 0); 1686 } 1687 if (error) 1688 allerror = error; 1689 vput(vp); 1690 mutex_enter(&mntvnode_lock); 1691 nvp = vunmark(mvp); 1692 } 1693 mutex_exit(&mntvnode_lock); 1694 /* 1695 * Force stale file system control information to be flushed. 1696 */ 1697 if (waitfor != MNT_LAZY && (ump->um_devvp->v_numoutput > 0 || 1698 !LIST_EMPTY(&ump->um_devvp->v_dirtyblkhd))) { 1699 vn_lock(ump->um_devvp, LK_EXCLUSIVE | LK_RETRY); 1700 if ((error = VOP_FSYNC(ump->um_devvp, cred, 1701 (waitfor == MNT_WAIT ? FSYNC_WAIT : 0) | FSYNC_NOLOG, 1702 0, 0)) != 0) 1703 allerror = error; 1704 VOP_UNLOCK(ump->um_devvp); 1705 if (allerror == 0 && waitfor == MNT_WAIT && !mp->mnt_wapbl) { 1706 mutex_enter(&mntvnode_lock); 1707 goto loop; 1708 } 1709 } 1710#if defined(QUOTA) || defined(QUOTA2) 1711 qsync(mp); 1712#endif 1713 /* 1714 * Write back modified superblock. 1715 */ 1716 if (fs->fs_fmod != 0) { 1717 fs->fs_fmod = 0; 1718 fs->fs_time = time_second; 1719 error = UFS_WAPBL_BEGIN(mp); 1720 if (error) 1721 allerror = error; 1722 else { 1723 if ((error = ffs_cgupdate(ump, waitfor))) 1724 allerror = error; 1725 UFS_WAPBL_END(mp); 1726 } 1727 } 1728 1729#ifdef WAPBL 1730 if (mp->mnt_wapbl) { 1731 error = wapbl_flush(mp->mnt_wapbl, 0); 1732 if (error) 1733 allerror = error; 1734 } 1735#endif 1736 1737 fstrans_done(mp); 1738 vnfree(mvp); 1739 return (allerror); 1740} 1741 1742/* 1743 * Look up a FFS dinode number to find its incore vnode, otherwise read it 1744 * in from disk. If it is in core, wait for the lock bit to clear, then 1745 * return the inode locked. Detection and handling of mount points must be 1746 * done by the calling routine. 1747 */ 1748int 1749ffs_vget(struct mount *mp, ino_t ino, struct vnode **vpp) 1750{ 1751 struct fs *fs; 1752 struct inode *ip; 1753 struct ufsmount *ump; 1754 struct buf *bp; 1755 struct vnode *vp; 1756 dev_t dev; 1757 int error; 1758 1759 ump = VFSTOUFS(mp); 1760 dev = ump->um_dev; 1761 1762 retry: 1763 if ((*vpp = ufs_ihashget(dev, ino, LK_EXCLUSIVE)) != NULL) 1764 return (0); 1765 1766 /* Allocate a new vnode/inode. */ 1767 error = getnewvnode(VT_UFS, mp, ffs_vnodeop_p, NULL, &vp); 1768 if (error) { 1769 *vpp = NULL; 1770 return (error); 1771 } 1772 ip = pool_cache_get(ffs_inode_cache, PR_WAITOK); 1773 1774 /* 1775 * If someone beat us to it, put back the freshly allocated 1776 * vnode/inode pair and retry. 1777 */ 1778 mutex_enter(&ufs_hashlock); 1779 if (ufs_ihashget(dev, ino, 0) != NULL) { 1780 mutex_exit(&ufs_hashlock); 1781 ungetnewvnode(vp); 1782 pool_cache_put(ffs_inode_cache, ip); 1783 goto retry; 1784 } 1785 1786 vp->v_vflag |= VV_LOCKSWORK; 1787 1788 /* 1789 * XXX MFS ends up here, too, to allocate an inode. Should we 1790 * XXX create another pool for MFS inodes? 1791 */ 1792 1793 memset(ip, 0, sizeof(struct inode)); 1794 vp->v_data = ip; 1795 ip->i_vnode = vp; 1796 ip->i_ump = ump; 1797 ip->i_fs = fs = ump->um_fs; 1798 ip->i_dev = dev; 1799 ip->i_number = ino; 1800#if defined(QUOTA) || defined(QUOTA2) 1801 ufsquota_init(ip); 1802#endif 1803 1804 /* 1805 * Initialize genfs node, we might proceed to destroy it in 1806 * error branches. 1807 */ 1808 genfs_node_init(vp, &ffs_genfsops); 1809 1810 /* 1811 * Put it onto its hash chain and lock it so that other requests for 1812 * this inode will block if they arrive while we are sleeping waiting 1813 * for old data structures to be purged or for the contents of the 1814 * disk portion of this inode to be read. 1815 */ 1816 1817 ufs_ihashins(ip); 1818 mutex_exit(&ufs_hashlock); 1819 1820 /* Read in the disk contents for the inode, copy into the inode. */ 1821 error = bread(ump->um_devvp, fsbtodb(fs, ino_to_fsba(fs, ino)), 1822 (int)fs->fs_bsize, NOCRED, 0, &bp); 1823 if (error) { 1824 1825 /* 1826 * The inode does not contain anything useful, so it would 1827 * be misleading to leave it on its hash chain. With mode 1828 * still zero, it will be unlinked and returned to the free 1829 * list by vput(). 1830 */ 1831 1832 vput(vp); 1833 brelse(bp, 0); 1834 *vpp = NULL; 1835 return (error); 1836 } 1837 if (ip->i_ump->um_fstype == UFS1) 1838 ip->i_din.ffs1_din = pool_cache_get(ffs_dinode1_cache, 1839 PR_WAITOK); 1840 else 1841 ip->i_din.ffs2_din = pool_cache_get(ffs_dinode2_cache, 1842 PR_WAITOK); 1843 ffs_load_inode(bp, ip, fs, ino); 1844 brelse(bp, 0); 1845 1846 /* 1847 * Initialize the vnode from the inode, check for aliases. 1848 * Note that the underlying vnode may have changed. 1849 */ 1850 1851 ufs_vinit(mp, ffs_specop_p, ffs_fifoop_p, &vp); 1852 1853 /* 1854 * Finish inode initialization now that aliasing has been resolved. 1855 */ 1856 1857 ip->i_devvp = ump->um_devvp; 1858 vref(ip->i_devvp); 1859 1860 /* 1861 * Ensure that uid and gid are correct. This is a temporary 1862 * fix until fsck has been changed to do the update. 1863 */ 1864 1865 if (fs->fs_old_inodefmt < FS_44INODEFMT) { /* XXX */ 1866 ip->i_uid = ip->i_ffs1_ouid; /* XXX */ 1867 ip->i_gid = ip->i_ffs1_ogid; /* XXX */ 1868 } /* XXX */ 1869 uvm_vnp_setsize(vp, ip->i_size); 1870 *vpp = vp; 1871 return (0); 1872} 1873 1874/* 1875 * File handle to vnode 1876 * 1877 * Have to be really careful about stale file handles: 1878 * - check that the inode number is valid 1879 * - call ffs_vget() to get the locked inode 1880 * - check for an unallocated inode (i_mode == 0) 1881 * - check that the given client host has export rights and return 1882 * those rights via. exflagsp and credanonp 1883 */ 1884int 1885ffs_fhtovp(struct mount *mp, struct fid *fhp, struct vnode **vpp) 1886{ 1887 struct ufid ufh; 1888 struct fs *fs; 1889 1890 if (fhp->fid_len != sizeof(struct ufid)) 1891 return EINVAL; 1892 1893 memcpy(&ufh, fhp, sizeof(ufh)); 1894 fs = VFSTOUFS(mp)->um_fs; 1895 if (ufh.ufid_ino < ROOTINO || 1896 ufh.ufid_ino >= fs->fs_ncg * fs->fs_ipg) 1897 return (ESTALE); 1898 return (ufs_fhtovp(mp, &ufh, vpp)); 1899} 1900 1901/* 1902 * Vnode pointer to File handle 1903 */ 1904/* ARGSUSED */ 1905int 1906ffs_vptofh(struct vnode *vp, struct fid *fhp, size_t *fh_size) 1907{ 1908 struct inode *ip; 1909 struct ufid ufh; 1910 1911 if (*fh_size < sizeof(struct ufid)) { 1912 *fh_size = sizeof(struct ufid); 1913 return E2BIG; 1914 } 1915 ip = VTOI(vp); 1916 *fh_size = sizeof(struct ufid); 1917 memset(&ufh, 0, sizeof(ufh)); 1918 ufh.ufid_len = sizeof(struct ufid); 1919 ufh.ufid_ino = ip->i_number; 1920 ufh.ufid_gen = ip->i_gen; 1921 memcpy(fhp, &ufh, sizeof(ufh)); 1922 return (0); 1923} 1924 1925void 1926ffs_init(void) 1927{ 1928 if (ffs_initcount++ > 0) 1929 return; 1930 1931 ffs_inode_cache = pool_cache_init(sizeof(struct inode), 0, 0, 0, 1932 "ffsino", NULL, IPL_NONE, NULL, NULL, NULL); 1933 ffs_dinode1_cache = pool_cache_init(sizeof(struct ufs1_dinode), 0, 0, 0, 1934 "ffsdino1", NULL, IPL_NONE, NULL, NULL, NULL); 1935 ffs_dinode2_cache = pool_cache_init(sizeof(struct ufs2_dinode), 0, 0, 0, 1936 "ffsdino2", NULL, IPL_NONE, NULL, NULL, NULL); 1937 ufs_init(); 1938} 1939 1940void 1941ffs_reinit(void) 1942{ 1943 1944 ufs_reinit(); 1945} 1946 1947void 1948ffs_done(void) 1949{ 1950 if (--ffs_initcount > 0) 1951 return; 1952 1953 ufs_done(); 1954 pool_cache_destroy(ffs_dinode2_cache); 1955 pool_cache_destroy(ffs_dinode1_cache); 1956 pool_cache_destroy(ffs_inode_cache); 1957} 1958 1959/* 1960 * Write a superblock and associated information back to disk. 1961 */ 1962int 1963ffs_sbupdate(struct ufsmou…
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