1 /* 2 * Copyright (c) 1989, 1991, 1993, 1994 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#)ffs_vfsops.c 8.31 (Berkeley) 5/20/95 30 * $FreeBSD: src/sys/ufs/ffs/ffs_vfsops.c,v 1.117.2.10 2002/06/23 22:34:52 iedowse Exp $ 31 */ 32 33 #include "opt_quota.h" 34 35 #include <sys/disk.h> 36 #include <sys/param.h> 37 #include <sys/systm.h> 38 #include <sys/proc.h> 39 #include <sys/nlookup.h> 40 #include <sys/kernel.h> 41 #include <sys/vnode.h> 42 #include <sys/mount.h> 43 #include <sys/buf.h> 44 #include <sys/conf.h> 45 #include <sys/fcntl.h> 46 #include <sys/diskslice.h> 47 #include <sys/malloc.h> 48 49 #include "quota.h" 50 #include "ufsmount.h" 51 #include "inode.h" 52 #include "ufs_extern.h" 53 54 #include "fs.h" 55 #include "ffs_extern.h" 56 57 #include <vm/vm.h> 58 #include <vm/vm_page.h> 59 #include <vm/vm_zone.h> 60 61 #include <sys/buf2.h> 62 63 static MALLOC_DEFINE(M_FFSNODE, "FFS node", "FFS vnode private part"); 64 65 static int ffs_sbupdate (struct ufsmount *, int); 66 static int ffs_reload (struct mount *, struct ucred *); 67 static int ffs_oldfscompat (struct fs *); 68 static int ffs_mount (struct mount *, char *, caddr_t, struct ucred *); 69 static int ffs_init (struct vfsconf *); 70 71 static struct vfsops ufs_vfsops = { 72 .vfs_mount = ffs_mount, 73 .vfs_unmount = ffs_unmount, 74 .vfs_root = ufs_root, 75 .vfs_quotactl = ufs_quotactl, 76 .vfs_statfs = ffs_statfs, 77 .vfs_sync = ffs_sync, 78 .vfs_vget = ffs_vget, 79 .vfs_fhtovp = ffs_fhtovp, 80 .vfs_checkexp = ufs_check_export, 81 .vfs_vptofh = ffs_vptofh, 82 .vfs_init = ffs_init, 83 }; 84 85 VFS_SET(ufs_vfsops, ufs, 0); 86 MODULE_VERSION(ufs, 1); 87 88 extern struct vop_ops ffs_vnode_vops; 89 extern struct vop_ops ffs_spec_vops; 90 extern struct vop_ops ffs_fifo_vops; 91 92 /* 93 * ffs_mount 94 * 95 * Called when mounting local physical media 96 * 97 * PARAMETERS: 98 * mountroot 99 * mp mount point structure 100 * path NULL (flag for root mount!!!) 101 * data <unused> 102 * p process (user credentials check [statfs]) 103 * 104 * mount 105 * mp mount point structure 106 * path path to mount point 107 * data pointer to argument struct in user space 108 * p process (user credentials check) 109 * 110 * RETURNS: 0 Success 111 * !0 error number (errno.h) 112 * 113 * LOCK STATE: 114 * 115 * ENTRY 116 * mount point is locked 117 * EXIT 118 * mount point is locked 119 * 120 * NOTES: 121 * A NULL path can be used for a flag since the mount 122 * system call will fail with EFAULT in copyinstr in 123 * nlookup() if it is a genuine NULL from the user. 124 */ 125 static int 126 ffs_mount(struct mount *mp, /* mount struct pointer */ 127 char *path, /* path to mount point */ 128 caddr_t data, /* arguments to FS specific mount */ 129 struct ucred *cred) /* process requesting mount */ 130 { 131 size_t size; 132 int error; 133 struct vnode *devvp; 134 135 struct ufs_args args; 136 struct ufsmount *ump = NULL; 137 struct fs *fs; 138 int flags, ronly = 0; 139 mode_t accessmode; 140 struct nlookupdata nd; 141 struct vnode *rootvp; 142 143 devvp = NULL; 144 error = 0; 145 146 /* 147 * Use NULL path to flag a root mount 148 */ 149 if (path == NULL) { 150 /* 151 *** 152 * Mounting root filesystem 153 *** 154 */ 155 156 if ((error = bdevvp(rootdev, &rootvp))) { 157 kprintf("ffs_mountroot: can't find rootvp\n"); 158 return (error); 159 } 160 161 if( ( error = ffs_mountfs(rootvp, mp, M_FFSNODE)) != 0) { 162 /* fs specific cleanup (if any)*/ 163 goto error_1; 164 } 165 devvp = rootvp; 166 167 goto dostatfs; /* success*/ 168 169 } 170 171 /* 172 *** 173 * Mounting non-root filesystem or updating a filesystem 174 *** 175 */ 176 177 /* copy in user arguments*/ 178 error = copyin(data, (caddr_t)&args, sizeof (struct ufs_args)); 179 if (error) 180 goto error_1; /* can't get arguments*/ 181 182 /* 183 * If updating, check whether changing from read-only to 184 * read/write; if there is no device name, that's all we do. 185 */ 186 if (mp->mnt_flag & MNT_UPDATE) { 187 ump = VFSTOUFS(mp); 188 fs = ump->um_fs; 189 devvp = ump->um_devvp; 190 error = 0; 191 ronly = fs->fs_ronly; /* MNT_RELOAD might change this */ 192 if (ronly == 0 && (mp->mnt_flag & MNT_RDONLY)) { 193 /* 194 * Flush any dirty data. 195 */ 196 VFS_SYNC(mp, MNT_WAIT); 197 /* 198 * Check for and optionally get rid of files open 199 * for writing. 200 */ 201 flags = WRITECLOSE; 202 if (mp->mnt_flag & MNT_FORCE) 203 flags |= FORCECLOSE; 204 if (mp->mnt_flag & MNT_SOFTDEP) { 205 error = softdep_flushfiles(mp, flags); 206 } else { 207 error = ffs_flushfiles(mp, flags); 208 } 209 ronly = 1; 210 } 211 if (!error && (mp->mnt_flag & MNT_RELOAD)) { 212 error = ffs_reload(mp, NULL); 213 } 214 if (error) { 215 goto error_1; 216 } 217 if (ronly && (mp->mnt_kern_flag & MNTK_WANTRDWR)) { 218 /* 219 * If upgrade to read-write by non-root, then verify 220 * that user has necessary permissions on the device. 221 */ 222 if (cred->cr_uid != 0) { 223 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 224 if ((error = VOP_EACCESS(devvp, VREAD | VWRITE, 225 cred)) != 0) { 226 vn_unlock(devvp); 227 return (error); 228 } 229 vn_unlock(devvp); 230 } 231 232 fs->fs_flags &= ~FS_UNCLEAN; 233 if (fs->fs_clean == 0) { 234 fs->fs_flags |= FS_UNCLEAN; 235 if (mp->mnt_flag & MNT_FORCE) { 236 kprintf( 237 "WARNING: %s was not properly dismounted\n", 238 fs->fs_fsmnt); 239 } else { 240 kprintf( 241 "WARNING: R/W mount of %s denied. Filesystem is not clean - run fsck\n", 242 fs->fs_fsmnt); 243 error = EPERM; 244 goto error_1; 245 } 246 } 247 248 /* check to see if we need to start softdep */ 249 if (fs->fs_flags & FS_DOSOFTDEP) { 250 error = softdep_mount(devvp, mp, fs); 251 if (error) 252 goto error_1; 253 } 254 ronly = 0; 255 } 256 /* 257 * Soft updates is incompatible with "async", 258 * so if we are doing softupdates stop the user 259 * from setting the async flag in an update. 260 * Softdep_mount() clears it in an initial mount 261 * or ro->rw remount. 262 */ 263 if (mp->mnt_flag & MNT_SOFTDEP) { 264 mp->mnt_flag &= ~MNT_ASYNC; 265 } 266 /* if not updating name...*/ 267 if (args.fspec == 0) { 268 /* 269 * Process export requests. Jumping to "success" 270 * will return the vfs_export() error code. 271 */ 272 error = vfs_export(mp, &ump->um_export, &args.export); 273 goto success; 274 } 275 } 276 277 /* 278 * Not an update, or updating the name: look up the name 279 * and verify that it refers to a sensible block device. 280 */ 281 devvp = NULL; 282 error = nlookup_init(&nd, args.fspec, UIO_USERSPACE, NLC_FOLLOW); 283 if (error == 0) 284 error = nlookup(&nd); 285 if (error == 0) 286 error = cache_vref(&nd.nl_nch, nd.nl_cred, &devvp); 287 nlookup_done(&nd); 288 if (error) 289 goto error_1; 290 291 if (!vn_isdisk(devvp, &error)) 292 goto error_2; 293 294 /* 295 * If mount by non-root, then verify that user has necessary 296 * permissions on the device. 297 */ 298 if (cred->cr_uid != 0) { 299 accessmode = VREAD; 300 if ((mp->mnt_flag & MNT_RDONLY) == 0) 301 accessmode |= VWRITE; 302 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 303 if ((error = VOP_EACCESS(devvp, accessmode, cred)) != 0) { 304 vput(devvp); 305 return (error); 306 } 307 vn_unlock(devvp); 308 } 309 310 if (mp->mnt_flag & MNT_UPDATE) { 311 /* 312 * UPDATE - make sure the resolved vnode represents the same 313 * device. Since devfs, devvp->v_rdev can be used directly as 314 * it is always associated as long as the vnode exists. 315 * 316 * Our current open/writecount state is associated with 317 * um_devvp, so continue using um_devvp and throw away devvp. 318 */ 319 if (devvp != ump->um_devvp) { 320 if (devvp->v_rdev == ump->um_devvp->v_rdev) { 321 vrele(devvp); 322 devvp = ump->um_devvp; 323 } else { 324 kprintf("cannot update mount, v_rdev does" 325 " not match (%p vs %p)\n", 326 devvp->v_rdev, ump->um_devvp->v_rdev); 327 error = EINVAL; /* needs translation */ 328 } 329 } else { 330 vrele(devvp); 331 } 332 /* 333 * Update device name only on success 334 */ 335 if (!error) { 336 /* Save "mounted from" info for mount point (NULL pad)*/ 337 copyinstr( args.fspec, 338 mp->mnt_stat.f_mntfromname, 339 MNAMELEN - 1, 340 &size); 341 bzero( mp->mnt_stat.f_mntfromname + size, MNAMELEN - size); 342 } 343 } else { 344 /* 345 ******************** 346 * NEW MOUNT 347 ******************** 348 */ 349 350 /* Save "mounted from" info for mount point (NULL pad)*/ 351 copyinstr( args.fspec, /* device name*/ 352 mp->mnt_stat.f_mntfromname, /* save area*/ 353 MNAMELEN - 1, /* max size*/ 354 &size); /* real size*/ 355 bzero( mp->mnt_stat.f_mntfromname + size, MNAMELEN - size); 356 357 /* Save "last mounted on" info for mount point (NULL pad)*/ 358 bzero(mp->mnt_stat.f_mntonname, 359 sizeof(mp->mnt_stat.f_mntonname)); 360 if (path) { 361 copyinstr(path, mp->mnt_stat.f_mntonname, 362 sizeof(mp->mnt_stat.f_mntonname) - 1, 363 &size); 364 } else { /* Root mount */ 365 mp->mnt_stat.f_mntonname[0] = '/'; 366 } 367 368 error = ffs_mountfs(devvp, mp, M_FFSNODE); 369 } 370 if (error) { 371 goto error_2; 372 } 373 374 dostatfs: 375 /* 376 * Initialize FS stat information in mount struct; uses 377 * mp->mnt_stat.f_mntfromname. 378 * 379 * This code is common to root and non-root mounts 380 */ 381 (void)VFS_STATFS(mp, &mp->mnt_stat, cred); 382 383 goto success; 384 385 386 error_2: /* error with devvp held*/ 387 388 /* release devvp before failing*/ 389 vrele(devvp); 390 391 error_1: /* no state to back out*/ 392 393 success: 394 if (!error && path && (mp->mnt_flag & MNT_UPDATE)) { 395 /* Update clean flag after changing read-onlyness. */ 396 fs = ump->um_fs; 397 if (ronly != fs->fs_ronly) { 398 fs->fs_ronly = ronly; 399 fs->fs_clean = ronly && 400 (fs->fs_flags & FS_UNCLEAN) == 0 ? 1 : 0; 401 402 /* 403 * The device must be re-opened as appropriate or 404 * the device close at unmount time will panic. 405 */ 406 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 407 if (ronly) { 408 VOP_OPEN(devvp, FREAD, FSCRED, NULL); 409 VOP_CLOSE(devvp, FREAD|FWRITE); 410 } else { 411 VOP_OPEN(devvp, FREAD|FWRITE, FSCRED, NULL); 412 VOP_CLOSE(devvp, FREAD); 413 } 414 vn_unlock(devvp); 415 ffs_sbupdate(ump, MNT_WAIT); 416 } 417 } 418 return (error); 419 } 420 421 /* 422 * Reload all incore data for a filesystem (used after running fsck on 423 * the root filesystem and finding things to fix). The filesystem must 424 * be mounted read-only. 425 * 426 * Things to do to update the mount: 427 * 1) invalidate all cached meta-data. 428 * 2) re-read superblock from disk. 429 * 3) re-read summary information from disk. 430 * 4) invalidate all inactive vnodes. 431 * 5) invalidate all cached file data. 432 * 6) re-read inode data for all active vnodes. 433 */ 434 435 static int ffs_reload_scan2(struct mount *mp, struct vnode *vp, void *data); 436 437 struct scaninfo { 438 int rescan; 439 struct fs *fs; 440 struct vnode *devvp; 441 int waitfor; 442 int allerror; 443 }; 444 445 static int 446 ffs_reload(struct mount *mp, struct ucred *cred) 447 { 448 struct vnode *devvp; 449 void *space; 450 struct buf *bp; 451 struct fs *fs, *newfs; 452 struct partinfo dpart; 453 int i, blks, size, error; 454 struct scaninfo scaninfo; 455 int32_t *lp; 456 457 if ((mp->mnt_flag & MNT_RDONLY) == 0) 458 return (EINVAL); 459 /* 460 * Step 1: invalidate all cached meta-data. 461 */ 462 devvp = VFSTOUFS(mp)->um_devvp; 463 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 464 error = vinvalbuf(devvp, 0, 0, 0); 465 vn_unlock(devvp); 466 if (error) 467 panic("ffs_reload: dirty1"); 468 469 /* 470 * The backing device must be VMIO-capable because we use getblk(). 471 * NOTE: the MFS driver now returns a VMIO-enabled descriptor. 472 */ 473 if (devvp->v_object == NULL) 474 panic("ffs_reload: devvp has no VM object!"); 475 476 /* 477 * Step 2: re-read superblock from disk. 478 */ 479 if (VOP_IOCTL(devvp, DIOCGPART, (caddr_t)&dpart, FREAD, 480 cred, NULL) != 0) { 481 size = DEV_BSIZE; 482 } else { 483 size = dpart.media_blksize; 484 } 485 if ((error = bread(devvp, SBOFF, SBSIZE, &bp)) != 0) { 486 brelse(bp); 487 return (error); 488 } 489 newfs = (struct fs *)bp->b_data; 490 if (newfs->fs_magic != FS_MAGIC || newfs->fs_bsize > MAXBSIZE || 491 newfs->fs_bsize < sizeof(struct fs)) { 492 brelse(bp); 493 return (EIO); /* XXX needs translation */ 494 } 495 fs = VFSTOUFS(mp)->um_fs; 496 /* 497 * Copy pointer fields back into superblock before copying in XXX 498 * new superblock. These should really be in the ufsmount. XXX 499 * Note that important parameters (eg fs_ncg) are unchanged. 500 */ 501 newfs->fs_csp = fs->fs_csp; 502 newfs->fs_maxcluster = fs->fs_maxcluster; 503 newfs->fs_contigdirs = fs->fs_contigdirs; 504 /* The filesystem is still read-only. */ 505 newfs->fs_ronly = 1; 506 bcopy(newfs, fs, (uint)fs->fs_sbsize); 507 if (fs->fs_sbsize < SBSIZE) 508 bp->b_flags |= B_INVAL; 509 brelse(bp); 510 mp->mnt_maxsymlinklen = fs->fs_maxsymlinklen; 511 ffs_oldfscompat(fs); 512 /* An old fsck may have zeroed these fields, so recheck them. */ 513 if (fs->fs_avgfilesize <= 0) /* XXX */ 514 fs->fs_avgfilesize = AVFILESIZ; /* XXX */ 515 if (fs->fs_avgfpdir <= 0) /* XXX */ 516 fs->fs_avgfpdir = AFPDIR; /* XXX */ 517 518 /* 519 * Step 3: re-read summary information from disk. 520 */ 521 blks = howmany(fs->fs_cssize, fs->fs_fsize); 522 space = fs->fs_csp; 523 for (i = 0; i < blks; i += fs->fs_frag) { 524 size = fs->fs_bsize; 525 if (i + fs->fs_frag > blks) 526 size = (blks - i) * fs->fs_fsize; 527 error = bread(devvp, fsbtodoff(fs, fs->fs_csaddr + i), size, &bp); 528 if (error) { 529 brelse(bp); 530 return (error); 531 } 532 bcopy(bp->b_data, space, (uint)size); 533 space = (char *)space + size; 534 brelse(bp); 535 } 536 /* 537 * We no longer know anything about clusters per cylinder group. 538 */ 539 if (fs->fs_contigsumsize > 0) { 540 lp = fs->fs_maxcluster; 541 for (i = 0; i < fs->fs_ncg; i++) 542 *lp++ = fs->fs_contigsumsize; 543 } 544 545 scaninfo.rescan = 0; 546 scaninfo.fs = fs; 547 scaninfo.devvp = devvp; 548 while (error == 0 && scaninfo.rescan) { 549 scaninfo.rescan = 0; 550 error = vmntvnodescan(mp, VMSC_GETVX, 551 NULL, ffs_reload_scan2, &scaninfo); 552 } 553 return(error); 554 } 555 556 static int 557 ffs_reload_scan2(struct mount *mp, struct vnode *vp, void *data) 558 { 559 struct scaninfo *info = data; 560 struct inode *ip; 561 struct buf *bp; 562 int error; 563 564 /* 565 * Try to recycle 566 */ 567 if (vrecycle(vp)) 568 return(0); 569 570 if (vinvalbuf(vp, 0, 0, 0)) 571 panic("ffs_reload: dirty2"); 572 /* 573 * Step 6: re-read inode data for all active vnodes. 574 */ 575 ip = VTOI(vp); 576 error = bread(info->devvp, 577 fsbtodoff(info->fs, ino_to_fsba(info->fs, ip->i_number)), 578 (int)info->fs->fs_bsize, &bp); 579 if (error) { 580 brelse(bp); 581 return (error); 582 } 583 ip->i_din = *((struct ufs1_dinode *)bp->b_data + 584 ino_to_fsbo(info->fs, ip->i_number)); 585 ip->i_effnlink = ip->i_nlink; 586 brelse(bp); 587 return(0); 588 } 589 590 /* 591 * Common code for mount and mountroot 592 */ 593 int 594 ffs_mountfs(struct vnode *devvp, struct mount *mp, struct malloc_type *mtype) 595 { 596 struct ufsmount *ump; 597 struct buf *bp; 598 struct fs *fs; 599 cdev_t dev; 600 struct partinfo dpart; 601 void *space; 602 int error, i, blks, size, ronly; 603 int32_t *lp; 604 uint64_t maxfilesize; /* XXX */ 605 606 /* 607 * Disallow multiple mounts of the same device. 608 * Disallow mounting of a device that is currently in use 609 * Flush out any old buffers remaining from a previous use. 610 */ 611 error = vfs_mountedon(devvp); 612 if (error) 613 return (error); 614 if (vcount(devvp) > 0) 615 return (EBUSY); 616 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 617 error = vinvalbuf(devvp, V_SAVE, 0, 0); 618 vn_unlock(devvp); 619 if (error) 620 return (error); 621 622 ronly = (mp->mnt_flag & MNT_RDONLY) != 0; 623 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 624 error = VOP_OPEN(devvp, ronly ? FREAD : FREAD|FWRITE, FSCRED, NULL); 625 vn_unlock(devvp); 626 if (error) 627 return (error); 628 dev = devvp->v_rdev; 629 if (dev->si_iosize_max != 0) 630 mp->mnt_iosize_max = dev->si_iosize_max; 631 if (mp->mnt_iosize_max > MAXPHYS) 632 mp->mnt_iosize_max = MAXPHYS; 633 634 /* 635 * Filesystem supports native FSMIDs 636 */ 637 mp->mnt_kern_flag |= MNTK_FSMID; 638 639 /* 640 * The backing device must be VMIO-capable because we use getblk(). 641 * NOTE: the MFS driver now returns a VMIO-enabled descriptor. 642 * The VOP_OPEN() call above should have associated a VM object 643 * with devvp. 644 */ 645 if (devvp->v_object == NULL) 646 panic("ffs_reload: devvp has no VM object!"); 647 648 if (VOP_IOCTL(devvp, DIOCGPART, (caddr_t)&dpart, FREAD, 649 proc0.p_ucred, NULL) != 0) { 650 size = DEV_BSIZE; 651 } else { 652 size = dpart.media_blksize; 653 } 654 655 bp = NULL; 656 ump = NULL; 657 if ((error = bread(devvp, SBOFF, SBSIZE, &bp)) != 0) 658 goto out; 659 fs = (struct fs *)bp->b_data; 660 if (fs->fs_magic != FS_MAGIC || fs->fs_bsize > MAXBSIZE || 661 fs->fs_bsize < sizeof(struct fs)) { 662 error = EINVAL; /* XXX needs translation */ 663 goto out; 664 } 665 fs->fs_fmod = 0; 666 fs->fs_flags &= ~FS_UNCLEAN; 667 if (fs->fs_clean == 0) { 668 fs->fs_flags |= FS_UNCLEAN; 669 if (ronly || (mp->mnt_flag & MNT_FORCE)) { 670 kprintf( 671 "WARNING: %s was not properly dismounted\n", 672 fs->fs_fsmnt); 673 } else { 674 kprintf( 675 "WARNING: R/W mount of %s denied. Filesystem is not clean - run fsck\n", 676 fs->fs_fsmnt); 677 error = EPERM; 678 goto out; 679 } 680 } 681 /* XXX updating 4.2 FFS superblocks trashes rotational layout tables */ 682 if (fs->fs_postblformat == FS_42POSTBLFMT && !ronly) { 683 error = EROFS; /* needs translation */ 684 goto out; 685 } 686 ump = kmalloc(sizeof *ump, M_UFSMNT, M_WAITOK | M_ZERO); 687 ump->um_malloctype = mtype; 688 ump->um_i_effnlink_valid = 1; 689 ump->um_fs = kmalloc((u_long)fs->fs_sbsize, M_UFSMNT, 690 M_WAITOK); 691 bcopy(bp->b_data, ump->um_fs, (uint)fs->fs_sbsize); 692 if (fs->fs_sbsize < SBSIZE) 693 bp->b_flags |= B_INVAL; 694 brelse(bp); 695 bp = NULL; 696 fs = ump->um_fs; 697 fs->fs_ronly = ronly; 698 size = fs->fs_cssize; 699 blks = howmany(size, fs->fs_fsize); 700 if (fs->fs_contigsumsize > 0) 701 size += fs->fs_ncg * sizeof(int32_t); 702 size += fs->fs_ncg * sizeof(uint8_t); 703 space = kmalloc((u_long)size, M_UFSMNT, M_WAITOK); 704 fs->fs_csp = space; 705 for (i = 0; i < blks; i += fs->fs_frag) { 706 size = fs->fs_bsize; 707 if (i + fs->fs_frag > blks) 708 size = (blks - i) * fs->fs_fsize; 709 if ((error = bread(devvp, fsbtodoff(fs, fs->fs_csaddr + i), 710 size, &bp)) != 0) { 711 kfree(fs->fs_csp, M_UFSMNT); 712 goto out; 713 } 714 bcopy(bp->b_data, space, (uint)size); 715 space = (char *)space + size; 716 brelse(bp); 717 bp = NULL; 718 } 719 if (fs->fs_contigsumsize > 0) { 720 fs->fs_maxcluster = lp = space; 721 for (i = 0; i < fs->fs_ncg; i++) 722 *lp++ = fs->fs_contigsumsize; 723 space = lp; 724 } 725 size = fs->fs_ncg * sizeof(uint8_t); 726 fs->fs_contigdirs = (uint8_t *)space; 727 bzero(fs->fs_contigdirs, size); 728 /* Compatibility for old filesystems XXX */ 729 if (fs->fs_avgfilesize <= 0) /* XXX */ 730 fs->fs_avgfilesize = AVFILESIZ; /* XXX */ 731 if (fs->fs_avgfpdir <= 0) /* XXX */ 732 fs->fs_avgfpdir = AFPDIR; /* XXX */ 733 mp->mnt_data = (qaddr_t)ump; 734 mp->mnt_stat.f_fsid.val[0] = fs->fs_id[0]; 735 mp->mnt_stat.f_fsid.val[1] = fs->fs_id[1]; 736 if (fs->fs_id[0] == 0 || fs->fs_id[1] == 0 || 737 vfs_getvfs(&mp->mnt_stat.f_fsid)) 738 vfs_getnewfsid(mp); 739 mp->mnt_maxsymlinklen = fs->fs_maxsymlinklen; 740 mp->mnt_flag |= MNT_LOCAL; 741 ump->um_mountp = mp; 742 ump->um_dev = dev; 743 ump->um_devvp = devvp; 744 ump->um_nindir = fs->fs_nindir; 745 ump->um_bptrtodb = fs->fs_fsbtodb; 746 ump->um_seqinc = fs->fs_frag; 747 for (i = 0; i < MAXQUOTAS; i++) 748 ump->um_quotas[i] = NULLVP; 749 dev->si_mountpoint = mp; 750 ffs_oldfscompat(fs); 751 752 /* restore "last mounted on" here */ 753 bzero(fs->fs_fsmnt, sizeof(fs->fs_fsmnt)); 754 ksnprintf(fs->fs_fsmnt, sizeof(fs->fs_fsmnt), 755 "%s", mp->mnt_stat.f_mntonname); 756 757 if( mp->mnt_flag & MNT_ROOTFS) { 758 /* 759 * Root mount; update timestamp in mount structure. 760 * this will be used by the common root mount code 761 * to update the system clock. 762 */ 763 mp->mnt_time = fs->fs_time; 764 } 765 766 ufs_ihashinit(ump); 767 ump->um_savedmaxfilesize = fs->fs_maxfilesize; /* XXX */ 768 maxfilesize = (uint64_t)0x40000000 * fs->fs_bsize - 1; /* XXX */ 769 /* Enforce limit caused by vm object backing (32 bits vm_pindex_t). */ 770 if (maxfilesize > (uint64_t)0x80000000u * PAGE_SIZE - 1) 771 maxfilesize = (uint64_t)0x80000000u * PAGE_SIZE - 1; 772 if (fs->fs_maxfilesize > maxfilesize) /* XXX */ 773 fs->fs_maxfilesize = maxfilesize; /* XXX */ 774 if (ronly == 0) { 775 if ((fs->fs_flags & FS_DOSOFTDEP) && 776 (error = softdep_mount(devvp, mp, fs)) != 0) { 777 kfree(fs->fs_csp, M_UFSMNT); 778 goto out; 779 } 780 fs->fs_fmod = 1; 781 fs->fs_clean = 0; 782 (void) ffs_sbupdate(ump, MNT_WAIT); 783 } 784 vfs_add_vnodeops(mp, &ffs_vnode_vops, &mp->mnt_vn_norm_ops); 785 vfs_add_vnodeops(mp, &ffs_spec_vops, &mp->mnt_vn_spec_ops); 786 vfs_add_vnodeops(mp, &ffs_fifo_vops, &mp->mnt_vn_fifo_ops); 787 788 return (0); 789 out: 790 dev->si_mountpoint = NULL; 791 if (bp) 792 brelse(bp); 793 VOP_CLOSE(devvp, ronly ? FREAD : FREAD|FWRITE); 794 if (ump) { 795 ufs_ihashuninit(ump); 796 kfree(ump->um_fs, M_UFSMNT); 797 kfree(ump, M_UFSMNT); 798 mp->mnt_data = (qaddr_t)0; 799 } 800 return (error); 801 } 802 803 /* 804 * Sanity checks for old filesystems. 805 * 806 * XXX - goes away some day. 807 */ 808 static int 809 ffs_oldfscompat(struct fs *fs) 810 { 811 fs->fs_npsect = max(fs->fs_npsect, fs->fs_nsect); /* XXX */ 812 fs->fs_interleave = max(fs->fs_interleave, 1); /* XXX */ 813 if (fs->fs_postblformat == FS_42POSTBLFMT) /* XXX */ 814 fs->fs_nrpos = 8; /* XXX */ 815 if (fs->fs_inodefmt < FS_44INODEFMT) { /* XXX */ 816 #if 0 817 int i; /* XXX */ 818 uint64_t sizepb = fs->fs_bsize; /* XXX */ 819 /* XXX */ 820 fs->fs_maxfilesize = fs->fs_bsize * NDADDR - 1; /* XXX */ 821 for (i = 0; i < NIADDR; i++) { /* XXX */ 822 sizepb *= NINDIR(fs); /* XXX */ 823 fs->fs_maxfilesize += sizepb; /* XXX */ 824 } /* XXX */ 825 #endif 826 fs->fs_maxfilesize = (u_quad_t) 1LL << 39; 827 fs->fs_qbmask = ~fs->fs_bmask; /* XXX */ 828 fs->fs_qfmask = ~fs->fs_fmask; /* XXX */ 829 } /* XXX */ 830 return (0); 831 } 832 833 /* 834 * unmount system call 835 */ 836 int 837 ffs_unmount(struct mount *mp, int mntflags) 838 { 839 struct ufsmount *ump; 840 struct fs *fs; 841 int error, flags; 842 843 flags = 0; 844 if (mntflags & MNT_FORCE) { 845 flags |= FORCECLOSE; 846 } 847 if (mp->mnt_flag & MNT_SOFTDEP) { 848 if ((error = softdep_flushfiles(mp, flags)) != 0) 849 return (error); 850 } else { 851 if ((error = ffs_flushfiles(mp, flags)) != 0) 852 return (error); 853 } 854 ump = VFSTOUFS(mp); 855 fs = ump->um_fs; 856 if (fs->fs_ronly == 0) { 857 fs->fs_clean = fs->fs_flags & FS_UNCLEAN ? 0 : 1; 858 error = ffs_sbupdate(ump, MNT_WAIT); 859 if (error) { 860 fs->fs_clean = 0; 861 return (error); 862 } 863 } 864 ump->um_devvp->v_rdev->si_mountpoint = NULL; 865 866 vinvalbuf(ump->um_devvp, V_SAVE, 0, 0); 867 error = VOP_CLOSE(ump->um_devvp, fs->fs_ronly ? FREAD : FREAD|FWRITE); 868 869 vrele(ump->um_devvp); 870 871 ufs_ihashuninit(ump); 872 kfree(fs->fs_csp, M_UFSMNT); 873 kfree(fs, M_UFSMNT); 874 kfree(ump, M_UFSMNT); 875 mp->mnt_data = (qaddr_t)0; 876 mp->mnt_flag &= ~MNT_LOCAL; 877 return (error); 878 } 879 880 /* 881 * Flush out all the files in a filesystem. 882 */ 883 int 884 ffs_flushfiles(struct mount *mp, int flags) 885 { 886 struct ufsmount *ump; 887 int error; 888 889 ump = VFSTOUFS(mp); 890 #ifdef QUOTA 891 if (mp->mnt_flag & MNT_QUOTA) { 892 int i; 893 error = vflush(mp, 0, SKIPSYSTEM|flags); 894 if (error) 895 return (error); 896 /* Find out how many quota files we have open. */ 897 for (i = 0; i < MAXQUOTAS; i++) { 898 if (ump->um_quotas[i] == NULLVP) 899 continue; 900 ufs_quotaoff(mp, i); 901 } 902 /* 903 * Here we fall through to vflush again to ensure 904 * that we have gotten rid of all the system vnodes. 905 */ 906 } 907 #endif 908 /* 909 * Flush all the files. 910 */ 911 if ((error = vflush(mp, 0, flags)) != 0) 912 return (error); 913 /* 914 * Flush filesystem metadata. 915 */ 916 vn_lock(ump->um_devvp, LK_EXCLUSIVE | LK_RETRY); 917 error = VOP_FSYNC(ump->um_devvp, MNT_WAIT, 0); 918 vn_unlock(ump->um_devvp); 919 return (error); 920 } 921 922 /* 923 * Get filesystem statistics. 924 */ 925 int 926 ffs_statfs(struct mount *mp, struct statfs *sbp, struct ucred *cred) 927 { 928 struct ufsmount *ump; 929 struct fs *fs; 930 931 ump = VFSTOUFS(mp); 932 fs = ump->um_fs; 933 if (fs->fs_magic != FS_MAGIC) 934 panic("ffs_statfs"); 935 sbp->f_bsize = fs->fs_fsize; 936 sbp->f_iosize = fs->fs_bsize; 937 sbp->f_blocks = fs->fs_dsize; 938 sbp->f_bfree = fs->fs_cstotal.cs_nbfree * fs->fs_frag + 939 fs->fs_cstotal.cs_nffree; 940 sbp->f_bavail = freespace(fs, fs->fs_minfree); 941 sbp->f_files = fs->fs_ncg * fs->fs_ipg - ROOTINO; 942 sbp->f_ffree = fs->fs_cstotal.cs_nifree; 943 if (sbp != &mp->mnt_stat) { 944 sbp->f_type = mp->mnt_vfc->vfc_typenum; 945 bcopy((caddr_t)mp->mnt_stat.f_mntfromname, 946 (caddr_t)&sbp->f_mntfromname[0], MNAMELEN); 947 } 948 return (0); 949 } 950 951 /* 952 * Go through the disk queues to initiate sandbagged IO; 953 * go through the inodes to write those that have been modified; 954 * initiate the writing of the super block if it has been modified. 955 * 956 * Note: we are always called with the filesystem marked `MPBUSY'. 957 */ 958 959 960 static int ffs_sync_scan1(struct mount *mp, struct vnode *vp, void *data); 961 static int ffs_sync_scan2(struct mount *mp, struct vnode *vp, void *data); 962 963 int 964 ffs_sync(struct mount *mp, int waitfor) 965 { 966 struct ufsmount *ump = VFSTOUFS(mp); 967 struct fs *fs; 968 int error; 969 struct scaninfo scaninfo; 970 971 fs = ump->um_fs; 972 if (fs->fs_fmod != 0 && fs->fs_ronly != 0) { /* XXX */ 973 kprintf("fs = %s\n", fs->fs_fsmnt); 974 panic("ffs_sync: rofs mod"); 975 } 976 977 /* 978 * Write back each (modified) inode. 979 */ 980 scaninfo.allerror = 0; 981 scaninfo.rescan = 1; 982 scaninfo.waitfor = waitfor; 983 while (scaninfo.rescan) { 984 scaninfo.rescan = 0; 985 vmntvnodescan(mp, VMSC_GETVP|VMSC_NOWAIT, 986 ffs_sync_scan1, ffs_sync_scan2, &scaninfo); 987 } 988 989 /* 990 * Force stale filesystem control information to be flushed. 991 */ 992 if ((waitfor & MNT_LAZY) == 0) { 993 if (ump->um_mountp->mnt_flag & MNT_SOFTDEP) 994 waitfor = MNT_NOWAIT; 995 vn_lock(ump->um_devvp, LK_EXCLUSIVE | LK_RETRY); 996 if ((error = VOP_FSYNC(ump->um_devvp, waitfor, 0)) != 0) 997 scaninfo.allerror = error; 998 vn_unlock(ump->um_devvp); 999 } 1000 #ifdef QUOTA 1001 ufs_qsync(mp); 1002 #endif 1003 /* 1004 * Write back modified superblock. 1005 */ 1006 if (fs->fs_fmod != 0 && (error = ffs_sbupdate(ump, waitfor)) != 0) 1007 scaninfo.allerror = error; 1008 return (scaninfo.allerror); 1009 } 1010 1011 static int 1012 ffs_sync_scan1(struct mount *mp, struct vnode *vp, void *data) 1013 { 1014 struct inode *ip; 1015 1016 /* 1017 * Depend on the mount list's vnode lock to keep things stable 1018 * enough for a quick test. Since there might be hundreds of 1019 * thousands of vnodes, we cannot afford even a subroutine 1020 * call unless there's a good chance that we have work to do. 1021 */ 1022 ip = VTOI(vp); 1023 /* Restart out whole search if this guy is locked 1024 * or is being reclaimed. 1025 */ 1026 if (vp->v_type == VNON || (ip == NULL) || ((ip->i_flag & 1027 (IN_ACCESS | IN_CHANGE | IN_MODIFIED | IN_UPDATE)) == 0 && 1028 RB_EMPTY(&vp->v_rbdirty_tree))) { 1029 return(-1); 1030 } 1031 return(0); 1032 } 1033 1034 static int 1035 ffs_sync_scan2(struct mount *mp, struct vnode *vp, void *data) 1036 { 1037 struct scaninfo *info = data; 1038 struct inode *ip; 1039 int error; 1040 1041 /* 1042 * We have to recheck after having obtained the vnode interlock. 1043 */ 1044 ip = VTOI(vp); 1045 if (vp->v_type == VNON || vp->v_type == VBAD || 1046 ((ip->i_flag & 1047 (IN_ACCESS | IN_CHANGE | IN_MODIFIED | IN_UPDATE)) == 0 && 1048 RB_EMPTY(&vp->v_rbdirty_tree))) { 1049 return(0); 1050 } 1051 if (vp->v_type != VCHR) { 1052 if ((error = VOP_FSYNC(vp, info->waitfor, 0)) != 0) 1053 info->allerror = error; 1054 } else { 1055 /* 1056 * We must reference the vp to prevent it from 1057 * getting ripped out from under ffs_update, since 1058 * we are not holding a vnode lock. 1059 */ 1060 /* ffs_update(vp, waitfor == MNT_WAIT); */ 1061 ffs_update(vp, 0); 1062 } 1063 return(0); 1064 } 1065 1066 /* 1067 * Look up a FFS dinode number to find its incore vnode, otherwise read it 1068 * in from disk. If it is in core, wait for the lock bit to clear, then 1069 * return the inode locked. Detection and handling of mount points must be 1070 * done by the calling routine. 1071 */ 1072 1073 int 1074 ffs_vget(struct mount *mp, struct vnode *dvp, ino_t ino, struct vnode **vpp) 1075 { 1076 struct fs *fs; 1077 struct inode *ip; 1078 struct ufsmount *ump; 1079 struct buf *bp; 1080 struct vnode *vp; 1081 cdev_t dev; 1082 int error; 1083 1084 ump = VFSTOUFS(mp); 1085 dev = ump->um_dev; 1086 1087 retry: 1088 if ((*vpp = ufs_ihashget(ump, dev, ino)) != NULL) { 1089 return (0); 1090 } 1091 1092 /* 1093 * If this MALLOC() is performed after the getnewvnode() 1094 * it might block, leaving a vnode with a NULL v_data to be 1095 * found by ffs_sync() if a sync happens to fire right then, 1096 * which will cause a panic because ffs_sync() blindly 1097 * dereferences vp->v_data (as well it should). 1098 * 1099 * XXX this may no longer be true since getnewvnode returns a 1100 * VX locked vnode now. 1101 */ 1102 ip = kmalloc(sizeof(struct inode), ump->um_malloctype, 1103 M_WAITOK | M_ZERO); 1104 1105 /* Allocate a new vnode/inode. */ 1106 error = getnewvnode(VT_UFS, mp, &vp, VLKTIMEOUT, LK_CANRECURSE); 1107 if (error) { 1108 *vpp = NULL; 1109 kfree(ip, ump->um_malloctype); 1110 return (error); 1111 } 1112 ip->i_vnode = vp; 1113 ip->i_fs = fs = ump->um_fs; 1114 ip->i_dev = dev; 1115 ip->i_number = ino; 1116 #ifdef QUOTA 1117 { 1118 int i; 1119 for (i = 0; i < MAXQUOTAS; i++) 1120 ip->i_dquot[i] = NODQUOT; 1121 } 1122 #endif 1123 1124 /* 1125 * Insert it into the inode hash table. 1126 */ 1127 if (ufs_ihashins(ump, ip) != 0) { 1128 kprintf("debug: ufs ihashins collision, retrying inode %ld\n", 1129 (long) ip->i_number); 1130 *vpp = NULL; 1131 vp->v_type = VBAD; 1132 vx_put(vp); 1133 kfree(ip, ump->um_malloctype); 1134 goto retry; 1135 } 1136 vp->v_data = ip; 1137 1138 /* Read in the disk contents for the inode, copy into the inode. */ 1139 error = bread(ump->um_devvp, fsbtodoff(fs, ino_to_fsba(fs, ino)), 1140 (int)fs->fs_bsize, &bp); 1141 if (error) { 1142 /* 1143 * The inode does not contain anything useful, so it would 1144 * be misleading to leave it on its hash chain. With mode 1145 * still zero, it will be unlinked and returned to the free 1146 * list by vput(). 1147 */ 1148 vp->v_type = VBAD; 1149 brelse(bp); 1150 vx_put(vp); 1151 *vpp = NULL; 1152 return (error); 1153 } 1154 ip->i_din = *((struct ufs1_dinode *)bp->b_data + ino_to_fsbo(fs, ino)); 1155 if (DOINGSOFTDEP(vp)) 1156 softdep_load_inodeblock(ip); 1157 else 1158 ip->i_effnlink = ip->i_nlink; 1159 bqrelse(bp); 1160 1161 /* 1162 * Initialize the vnode from the inode, check for aliases. 1163 * Note that the underlying vnode may have changed. 1164 */ 1165 error = ufs_vinit(mp, &vp); 1166 if (error) { 1167 vp->v_type = VBAD; 1168 vx_put(vp); 1169 *vpp = NULL; 1170 return (error); 1171 } 1172 /* 1173 * Finish inode initialization now that aliasing has been resolved. 1174 */ 1175 ip->i_devvp = ump->um_devvp; 1176 vref(ip->i_devvp); 1177 /* 1178 * Set up a generation number for this inode if it does not 1179 * already have one. This should only happen on old filesystems. 1180 */ 1181 if (ip->i_gen == 0) { 1182 ip->i_gen = krandom() / 2 + 1; 1183 if ((vp->v_mount->mnt_flag & MNT_RDONLY) == 0) 1184 ip->i_flag |= IN_MODIFIED; 1185 } 1186 /* 1187 * Ensure that uid and gid are correct. This is a temporary 1188 * fix until fsck has been changed to do the update. 1189 */ 1190 if (fs->fs_inodefmt < FS_44INODEFMT) { /* XXX */ 1191 ip->i_uid = ip->i_din.di_ouid; /* XXX */ 1192 ip->i_gid = ip->i_din.di_ogid; /* XXX */ 1193 } /* XXX */ 1194 1195 /* 1196 * return a VX locked and refd vnode (VX == same as normal vget() 1197 * vnode so we are ok) 1198 */ 1199 *vpp = vp; 1200 return (0); 1201 } 1202 1203 /* 1204 * File handle to vnode 1205 * 1206 * Have to be really careful about stale file handles: 1207 * - check that the inode number is valid 1208 * - call ffs_vget() to get the locked inode 1209 * - check for an unallocated inode (i_mode == 0) 1210 * - check that the given client host has export rights and return 1211 * those rights via. exflagsp and credanonp 1212 */ 1213 int 1214 ffs_fhtovp(struct mount *mp, struct vnode *rootvp, 1215 struct fid *fhp, struct vnode **vpp) 1216 { 1217 struct ufid *ufhp; 1218 struct fs *fs; 1219 1220 ufhp = (struct ufid *)fhp; 1221 fs = VFSTOUFS(mp)->um_fs; 1222 if (ufhp->ufid_ino < ROOTINO || 1223 ufhp->ufid_ino >= fs->fs_ncg * fs->fs_ipg) 1224 return (ESTALE); 1225 return (ufs_fhtovp(mp, rootvp, ufhp, vpp)); 1226 } 1227 1228 /* 1229 * Vnode pointer to File handle 1230 */ 1231 /* ARGSUSED */ 1232 int 1233 ffs_vptofh(struct vnode *vp, struct fid *fhp) 1234 { 1235 struct inode *ip; 1236 struct ufid *ufhp; 1237 1238 ip = VTOI(vp); 1239 ufhp = (struct ufid *)fhp; 1240 ufhp->ufid_len = sizeof(struct ufid); 1241 ufhp->ufid_ino = ip->i_number; 1242 ufhp->ufid_gen = ip->i_gen; 1243 return (0); 1244 } 1245 1246 /* 1247 * Initialize the filesystem; just use ufs_init. 1248 */ 1249 static int 1250 ffs_init(struct vfsconf *vfsp) 1251 { 1252 softdep_initialize(); 1253 kmalloc_raise_limit(M_FFSNODE, 0); 1254 return (ufs_init(vfsp)); 1255 } 1256 1257 /* 1258 * Write a superblock and associated information back to disk. 1259 */ 1260 static int 1261 ffs_sbupdate(struct ufsmount *mp, int waitfor) 1262 { 1263 struct fs *dfs, *fs = mp->um_fs; 1264 struct buf *bp; 1265 int blks; 1266 void *space; 1267 int i, size, error, allerror = 0; 1268 1269 /* 1270 * First write back the summary information. 1271 * 1272 * NOTE: the getblk is relative to the device vnode so bio1 1273 * contains the device block number. 1274 */ 1275 blks = howmany(fs->fs_cssize, fs->fs_fsize); 1276 space = fs->fs_csp; 1277 for (i = 0; i < blks; i += fs->fs_frag) { 1278 size = fs->fs_bsize; 1279 if (i + fs->fs_frag > blks) 1280 size = (blks - i) * fs->fs_fsize; 1281 bp = getblk(mp->um_devvp, fsbtodoff(fs, fs->fs_csaddr + i), 1282 size, 0, 0); 1283 bcopy(space, bp->b_data, (uint)size); 1284 space = (char *)space + size; 1285 if (waitfor != MNT_WAIT) 1286 bawrite(bp); 1287 else if ((error = bwrite(bp)) != 0) 1288 allerror = error; 1289 } 1290 /* 1291 * Now write back the superblock itself. If any errors occurred 1292 * up to this point, then fail so that the superblock avoids 1293 * being written out as clean. 1294 */ 1295 if (allerror) 1296 return (allerror); 1297 bp = getblk(mp->um_devvp, SBOFF, (int)fs->fs_sbsize, 0, 0); 1298 fs->fs_fmod = 0; 1299 fs->fs_time = time_second; 1300 bcopy((caddr_t)fs, bp->b_data, (uint)fs->fs_sbsize); 1301 /* Restore compatibility to old filesystems. XXX */ 1302 dfs = (struct fs *)bp->b_data; /* XXX */ 1303 if (fs->fs_postblformat == FS_42POSTBLFMT) /* XXX */ 1304 dfs->fs_nrpos = -1; /* XXX */ 1305 if (fs->fs_inodefmt < FS_44INODEFMT) { /* XXX */ 1306 int32_t *lp, tmp; /* XXX */ 1307 /* XXX */ 1308 lp = (int32_t *)&dfs->fs_qbmask; /* XXX */ 1309 tmp = lp[4]; /* XXX */ 1310 for (i = 4; i > 0; i--) /* XXX */ 1311 lp[i] = lp[i-1]; /* XXX */ 1312 lp[0] = tmp; /* XXX */ 1313 } /* XXX */ 1314 dfs->fs_maxfilesize = mp->um_savedmaxfilesize; /* XXX */ 1315 if (waitfor != MNT_WAIT) 1316 bawrite(bp); 1317 else if ((error = bwrite(bp)) != 0) 1318 allerror = error; 1319 return (allerror); 1320 } 1321