ffs_vfsops.c revision 1.67.2.8
1 /* $NetBSD: ffs_vfsops.c,v 1.67.2.8 2003/10/06 09:25:23 itojun Exp $ */ 2 3 /* 4 * Copyright (c) 1989, 1991, 1993, 1994 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * @(#)ffs_vfsops.c 8.31 (Berkeley) 5/20/95 36 */ 37 38 #if defined(_KERNEL) && !defined(_LKM) 39 #include "opt_ffs.h" 40 #include "opt_quota.h" 41 #include "opt_compat_netbsd.h" 42 #include "opt_softdep.h" 43 #endif 44 45 #include <sys/param.h> 46 #include <sys/systm.h> 47 #include <sys/namei.h> 48 #include <sys/proc.h> 49 #include <sys/kernel.h> 50 #include <sys/vnode.h> 51 #include <sys/socket.h> 52 #include <sys/mount.h> 53 #include <sys/buf.h> 54 #include <sys/device.h> 55 #include <sys/mbuf.h> 56 #include <sys/file.h> 57 #include <sys/disklabel.h> 58 #include <sys/ioctl.h> 59 #include <sys/errno.h> 60 #include <sys/malloc.h> 61 #include <sys/pool.h> 62 #include <sys/lock.h> 63 #include <vm/vm.h> 64 #include <sys/sysctl.h> 65 66 #include <miscfs/specfs/specdev.h> 67 68 #include <ufs/ufs/quota.h> 69 #include <ufs/ufs/ufsmount.h> 70 #include <ufs/ufs/inode.h> 71 #include <ufs/ufs/dir.h> 72 #include <ufs/ufs/ufs_extern.h> 73 #include <ufs/ufs/ufs_bswap.h> 74 75 #include <ufs/ffs/fs.h> 76 #include <ufs/ffs/ffs_extern.h> 77 78 /* how many times ffs_init() was called */ 79 int ffs_initcount = 0; 80 81 extern struct lock ufs_hashlock; 82 83 extern struct vnodeopv_desc ffs_vnodeop_opv_desc; 84 extern struct vnodeopv_desc ffs_specop_opv_desc; 85 extern struct vnodeopv_desc ffs_fifoop_opv_desc; 86 87 struct vnodeopv_desc *ffs_vnodeopv_descs[] = { 88 &ffs_vnodeop_opv_desc, 89 &ffs_specop_opv_desc, 90 &ffs_fifoop_opv_desc, 91 NULL, 92 }; 93 94 struct vfsops ffs_vfsops = { 95 MOUNT_FFS, 96 ffs_mount, 97 ufs_start, 98 ffs_unmount, 99 ufs_root, 100 ufs_quotactl, 101 ffs_statfs, 102 ffs_sync, 103 ffs_vget, 104 ffs_fhtovp, 105 ffs_vptofh, 106 ffs_init, 107 ffs_done, 108 ffs_sysctl, 109 ffs_mountroot, 110 ufs_check_export, 111 ffs_vnodeopv_descs, 112 }; 113 114 struct pool ffs_inode_pool; 115 116 /* 117 * Called by main() when ffs is going to be mounted as root. 118 */ 119 120 int 121 ffs_mountroot() 122 { 123 struct fs *fs; 124 struct mount *mp; 125 struct proc *p = curproc; /* XXX */ 126 struct ufsmount *ump; 127 int error; 128 129 if (root_device->dv_class != DV_DISK) 130 return (ENODEV); 131 132 /* 133 * Get vnodes for rootdev. 134 */ 135 if (bdevvp(rootdev, &rootvp)) 136 panic("ffs_mountroot: can't setup bdevvp's"); 137 138 if ((error = vfs_rootmountalloc(MOUNT_FFS, "root_device", &mp))) { 139 vrele(rootvp); 140 return (error); 141 } 142 if ((error = ffs_mountfs(rootvp, mp, p)) != 0) { 143 mp->mnt_op->vfs_refcount--; 144 vfs_unbusy(mp); 145 free(mp, M_MOUNT); 146 vrele(rootvp); 147 return (error); 148 } 149 simple_lock(&mountlist_slock); 150 CIRCLEQ_INSERT_TAIL(&mountlist, mp, mnt_list); 151 simple_unlock(&mountlist_slock); 152 ump = VFSTOUFS(mp); 153 fs = ump->um_fs; 154 memset(fs->fs_fsmnt, 0, sizeof(fs->fs_fsmnt)); 155 (void)copystr(mp->mnt_stat.f_mntonname, fs->fs_fsmnt, MNAMELEN - 1, 0); 156 (void)ffs_statfs(mp, &mp->mnt_stat, p); 157 vfs_unbusy(mp); 158 inittodr(fs->fs_time); 159 return (0); 160 } 161 162 /* 163 * VFS Operations. 164 * 165 * mount system call 166 */ 167 int 168 ffs_mount(mp, path, data, ndp, p) 169 struct mount *mp; 170 const char *path; 171 void *data; 172 struct nameidata *ndp; 173 struct proc *p; 174 { 175 struct vnode *devvp; 176 struct ufs_args args; 177 struct ufsmount *ump = NULL; 178 struct fs *fs; 179 size_t size; 180 int error, flags; 181 mode_t accessmode; 182 183 error = copyin(data, (caddr_t)&args, sizeof (struct ufs_args)); 184 if (error) 185 return (error); 186 187 #if !defined(SOFTDEP) 188 mp->mnt_flag &= ~MNT_SOFTDEP; 189 #endif 190 191 /* 192 * If updating, check whether changing from read-only to 193 * read/write; if there is no device name, that's all we do. 194 */ 195 if (mp->mnt_flag & MNT_UPDATE) { 196 ump = VFSTOUFS(mp); 197 fs = ump->um_fs; 198 if (fs->fs_ronly == 0 && (mp->mnt_flag & MNT_RDONLY)) { 199 flags = WRITECLOSE; 200 if (mp->mnt_flag & MNT_FORCE) 201 flags |= FORCECLOSE; 202 if (mp->mnt_flag & MNT_SOFTDEP) 203 error = softdep_flushfiles(mp, flags, p); 204 else 205 error = ffs_flushfiles(mp, flags, p); 206 if (error == 0 && 207 ffs_cgupdate(ump, MNT_WAIT) == 0 && 208 fs->fs_clean & FS_WASCLEAN) { 209 if (mp->mnt_flag & MNT_SOFTDEP) 210 fs->fs_flags &= ~FS_DOSOFTDEP; 211 fs->fs_clean = FS_ISCLEAN; 212 (void) ffs_sbupdate(ump, MNT_WAIT); 213 } 214 if (error) 215 return (error); 216 fs->fs_ronly = 1; 217 fs->fs_fmod = 0; 218 } 219 220 /* 221 * Flush soft dependencies if disabling it via an update 222 * mount. This may leave some items to be processed, 223 * so don't do this yet XXX. 224 */ 225 if ((fs->fs_flags & FS_DOSOFTDEP) && 226 !(mp->mnt_flag & MNT_SOFTDEP) && fs->fs_ronly == 0) { 227 #ifdef notyet 228 flags = WRITECLOSE; 229 if (mp->mnt_flag & MNT_FORCE) 230 flags |= FORCECLOSE; 231 error = softdep_flushfiles(mp, flags, p); 232 if (error == 0 && ffs_cgupdate(ump, MNT_WAIT) == 0) 233 fs->fs_flags &= ~FS_DOSOFTDEP; 234 (void) ffs_sbupdate(ump, MNT_WAIT); 235 #elif defined(SOFTDEP) 236 mp->mnt_flag |= MNT_SOFTDEP; 237 #endif 238 } 239 240 /* 241 * When upgrading to a softdep mount, we must first flush 242 * all vnodes. (not done yet -- see above) 243 */ 244 if (!(fs->fs_flags & FS_DOSOFTDEP) && 245 (mp->mnt_flag & MNT_SOFTDEP) && fs->fs_ronly == 0) { 246 #ifdef notyet 247 flags = WRITECLOSE; 248 if (mp->mnt_flag & MNT_FORCE) 249 flags |= FORCECLOSE; 250 error = ffs_flushfiles(mp, flags, p); 251 #else 252 mp->mnt_flag &= ~MNT_SOFTDEP; 253 #endif 254 } 255 256 if (mp->mnt_flag & MNT_RELOAD) { 257 error = ffs_reload(mp, ndp->ni_cnd.cn_cred, p); 258 if (error) 259 return (error); 260 } 261 if (fs->fs_ronly && (mp->mnt_flag & MNT_WANTRDWR)) { 262 /* 263 * If upgrade to read-write by non-root, then verify 264 * that user has necessary permissions on the device. 265 */ 266 devvp = ump->um_devvp; 267 if (p->p_ucred->cr_uid != 0) { 268 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 269 error = VOP_ACCESS(devvp, VREAD | VWRITE, 270 p->p_ucred, p); 271 VOP_UNLOCK(devvp, 0); 272 if (error) 273 return (error); 274 } 275 fs->fs_ronly = 0; 276 fs->fs_clean <<= 1; 277 fs->fs_fmod = 1; 278 if ((fs->fs_flags & FS_DOSOFTDEP)) { 279 error = softdep_mount(devvp, mp, fs, 280 p->p_ucred); 281 if (error) 282 return (error); 283 } 284 } 285 if (args.fspec == 0) { 286 /* 287 * Process export requests. 288 */ 289 return (vfs_export(mp, &ump->um_export, &args.export)); 290 } 291 if ((mp->mnt_flag & (MNT_SOFTDEP | MNT_ASYNC)) == 292 (MNT_SOFTDEP | MNT_ASYNC)) { 293 printf("%s fs uses soft updates, ignoring async mode\n", 294 fs->fs_fsmnt); 295 mp->mnt_flag &= ~MNT_ASYNC; 296 } 297 } 298 /* 299 * Not an update, or updating the name: look up the name 300 * and verify that it refers to a sensible block device. 301 */ 302 NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args.fspec, p); 303 if ((error = namei(ndp)) != 0) 304 return (error); 305 devvp = ndp->ni_vp; 306 307 if (devvp->v_type != VBLK) { 308 vrele(devvp); 309 return (ENOTBLK); 310 } 311 if (major(devvp->v_rdev) >= nblkdev) { 312 vrele(devvp); 313 return (ENXIO); 314 } 315 /* 316 * If mount by non-root, then verify that user has necessary 317 * permissions on the device. 318 */ 319 if (p->p_ucred->cr_uid != 0) { 320 accessmode = VREAD; 321 if ((mp->mnt_flag & MNT_RDONLY) == 0) 322 accessmode |= VWRITE; 323 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 324 error = VOP_ACCESS(devvp, accessmode, p->p_ucred, p); 325 VOP_UNLOCK(devvp, 0); 326 if (error) { 327 vrele(devvp); 328 return (error); 329 } 330 } 331 if ((mp->mnt_flag & MNT_UPDATE) == 0) { 332 error = ffs_mountfs(devvp, mp, p); 333 if (!error) { 334 ump = VFSTOUFS(mp); 335 fs = ump->um_fs; 336 if ((mp->mnt_flag & (MNT_SOFTDEP | MNT_ASYNC)) == 337 (MNT_SOFTDEP | MNT_ASYNC)) { 338 printf("%s fs uses soft updates, " 339 "ignoring async mode\n", 340 fs->fs_fsmnt); 341 mp->mnt_flag &= ~MNT_ASYNC; 342 } 343 } 344 } 345 else { 346 if (devvp != ump->um_devvp) 347 error = EINVAL; /* needs translation */ 348 else 349 vrele(devvp); 350 } 351 if (error) { 352 vrele(devvp); 353 return (error); 354 } 355 (void) copyinstr(path, fs->fs_fsmnt, sizeof(fs->fs_fsmnt) - 1, &size); 356 memset(fs->fs_fsmnt + size, 0, sizeof(fs->fs_fsmnt) - size); 357 memcpy(mp->mnt_stat.f_mntonname, fs->fs_fsmnt, MNAMELEN); 358 (void) copyinstr(args.fspec, mp->mnt_stat.f_mntfromname, MNAMELEN - 1, 359 &size); 360 memset(mp->mnt_stat.f_mntfromname + size, 0, MNAMELEN - size); 361 if (mp->mnt_flag & MNT_SOFTDEP) 362 fs->fs_flags |= FS_DOSOFTDEP; 363 if (fs->fs_fmod != 0) { /* XXX */ 364 fs->fs_fmod = 0; 365 if (fs->fs_clean & FS_WASCLEAN) 366 fs->fs_time = time.tv_sec; 367 else 368 printf("%s: file system not clean (fs_clean=%x); please fsck(8)\n", 369 mp->mnt_stat.f_mntfromname, fs->fs_clean); 370 (void) ffs_cgupdate(ump, MNT_WAIT); 371 } 372 return (0); 373 } 374 375 /* 376 * Reload all incore data for a filesystem (used after running fsck on 377 * the root filesystem and finding things to fix). The filesystem must 378 * be mounted read-only. 379 * 380 * Things to do to update the mount: 381 * 1) invalidate all cached meta-data. 382 * 2) re-read superblock from disk. 383 * 3) re-read summary information from disk. 384 * 4) invalidate all inactive vnodes. 385 * 5) invalidate all cached file data. 386 * 6) re-read inode data for all active vnodes. 387 */ 388 int 389 ffs_reload(mountp, cred, p) 390 struct mount *mountp; 391 struct ucred *cred; 392 struct proc *p; 393 { 394 struct vnode *vp, *nvp, *devvp; 395 struct inode *ip; 396 void *space; 397 struct buf *bp; 398 struct fs *fs, *newfs; 399 struct partinfo dpart; 400 int i, blks, size, error; 401 int32_t *lp; 402 caddr_t cp; 403 404 if ((mountp->mnt_flag & MNT_RDONLY) == 0) 405 return (EINVAL); 406 /* 407 * Step 1: invalidate all cached meta-data. 408 */ 409 devvp = VFSTOUFS(mountp)->um_devvp; 410 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 411 error = vinvalbuf(devvp, 0, cred, p, 0, 0); 412 VOP_UNLOCK(devvp, 0); 413 if (error) 414 panic("ffs_reload: dirty1"); 415 /* 416 * Step 2: re-read superblock from disk. 417 */ 418 if (VOP_IOCTL(devvp, DIOCGPART, (caddr_t)&dpart, FREAD, NOCRED, p) != 0) 419 size = DEV_BSIZE; 420 else 421 size = dpart.disklab->d_secsize; 422 error = bread(devvp, (ufs_daddr_t)(SBOFF / size), SBSIZE, NOCRED, &bp); 423 if (error) { 424 brelse(bp); 425 return (error); 426 } 427 fs = VFSTOUFS(mountp)->um_fs; 428 newfs = malloc(fs->fs_sbsize, M_UFSMNT, M_WAITOK); 429 memcpy(newfs, bp->b_data, fs->fs_sbsize); 430 #ifdef FFS_EI 431 if (VFSTOUFS(mountp)->um_flags & UFS_NEEDSWAP) { 432 ffs_sb_swap((struct fs*)bp->b_data, newfs); 433 fs->fs_flags |= FS_SWAPPED; 434 } else 435 #endif 436 fs->fs_flags &= ~FS_SWAPPED; 437 if (newfs->fs_magic != FS_MAGIC || newfs->fs_bsize > MAXBSIZE || 438 newfs->fs_bsize < sizeof(struct fs)) { 439 brelse(bp); 440 free(newfs, M_UFSMNT); 441 return (EIO); /* XXX needs translation */ 442 } 443 /* 444 * Copy pointer fields back into superblock before copying in XXX 445 * new superblock. These should really be in the ufsmount. XXX 446 * Note that important parameters (eg fs_ncg) are unchanged. 447 */ 448 newfs->fs_csp = fs->fs_csp; 449 newfs->fs_maxcluster = fs->fs_maxcluster; 450 newfs->fs_contigdirs = fs->fs_contigdirs; 451 newfs->fs_ronly = fs->fs_ronly; 452 memcpy(fs, newfs, (u_int)fs->fs_sbsize); 453 if (fs->fs_sbsize < SBSIZE) 454 bp->b_flags |= B_INVAL; 455 brelse(bp); 456 free(newfs, M_UFSMNT); 457 mountp->mnt_maxsymlinklen = fs->fs_maxsymlinklen; 458 ffs_oldfscompat(fs); 459 /* An old fsck may have zeroed these fields, so recheck them. */ 460 if (fs->fs_avgfilesize <= 0) 461 fs->fs_avgfilesize = AVFILESIZ; 462 if (fs->fs_avgfpdir <= 0) 463 fs->fs_avgfpdir = AFPDIR; 464 465 ffs_statfs(mountp, &mountp->mnt_stat, p); 466 /* 467 * Step 3: re-read summary information from disk. 468 */ 469 blks = howmany(fs->fs_cssize, fs->fs_fsize); 470 space = fs->fs_csp; 471 for (i = 0; i < blks; i += fs->fs_frag) { 472 size = fs->fs_bsize; 473 if (i + fs->fs_frag > blks) 474 size = (blks - i) * fs->fs_fsize; 475 error = bread(devvp, fsbtodb(fs, fs->fs_csaddr + i), size, 476 NOCRED, &bp); 477 if (error) { 478 brelse(bp); 479 return (error); 480 } 481 #ifdef FFS_EI 482 if (UFS_FSNEEDSWAP(fs)) 483 ffs_csum_swap((struct csum *)bp->b_data, 484 (struct csum *)space, size); 485 else 486 #endif 487 memcpy(space, bp->b_data, (size_t)size); 488 space = (char *)space + size; 489 brelse(bp); 490 } 491 if ((fs->fs_flags & FS_DOSOFTDEP)) 492 softdep_mount(devvp, mountp, fs, cred); 493 /* 494 * We no longer know anything about clusters per cylinder group. 495 */ 496 if (fs->fs_contigsumsize > 0) { 497 lp = fs->fs_maxcluster; 498 for (i = 0; i < fs->fs_ncg; i++) 499 *lp++ = fs->fs_contigsumsize; 500 } 501 502 loop: 503 simple_lock(&mntvnode_slock); 504 for (vp = mountp->mnt_vnodelist.lh_first; vp != NULL; vp = nvp) { 505 if (vp->v_mount != mountp) { 506 simple_unlock(&mntvnode_slock); 507 goto loop; 508 } 509 nvp = vp->v_mntvnodes.le_next; 510 /* 511 * Step 4: invalidate all inactive vnodes. 512 */ 513 if (vrecycle(vp, &mntvnode_slock, p)) 514 goto loop; 515 /* 516 * Step 5: invalidate all cached file data. 517 */ 518 simple_lock(&vp->v_interlock); 519 simple_unlock(&mntvnode_slock); 520 if (vget(vp, LK_EXCLUSIVE | LK_INTERLOCK)) 521 goto loop; 522 if (vinvalbuf(vp, 0, cred, p, 0, 0)) 523 panic("ffs_reload: dirty2"); 524 /* 525 * Step 6: re-read inode data for all active vnodes. 526 */ 527 ip = VTOI(vp); 528 error = bread(devvp, fsbtodb(fs, ino_to_fsba(fs, ip->i_number)), 529 (int)fs->fs_bsize, NOCRED, &bp); 530 if (error) { 531 brelse(bp); 532 vput(vp); 533 return (error); 534 } 535 cp = (caddr_t)bp->b_data + 536 (ino_to_fsbo(fs, ip->i_number) * DINODE_SIZE); 537 #ifdef FFS_EI 538 if (UFS_FSNEEDSWAP(fs)) 539 ffs_dinode_swap((struct dinode *)cp, 540 &ip->i_din.ffs_din); 541 else 542 #endif 543 memcpy(&ip->i_din.ffs_din, cp, DINODE_SIZE); 544 ip->i_ffs_effnlink = ip->i_ffs_nlink; 545 brelse(bp); 546 vput(vp); 547 simple_lock(&mntvnode_slock); 548 } 549 simple_unlock(&mntvnode_slock); 550 return (0); 551 } 552 553 /* 554 * Common code for mount and mountroot 555 */ 556 int 557 ffs_mountfs(devvp, mp, p) 558 struct vnode *devvp; 559 struct mount *mp; 560 struct proc *p; 561 { 562 struct ufsmount *ump; 563 struct buf *bp; 564 struct fs *fs; 565 dev_t dev; 566 struct partinfo dpart; 567 void *space; 568 int blks; 569 int error, i, size, ronly; 570 #ifdef FFS_EI 571 int needswap; 572 #endif 573 int32_t *lp; 574 struct ucred *cred; 575 u_int64_t maxfilesize; /* XXX */ 576 u_int32_t sbsize; 577 578 dev = devvp->v_rdev; 579 cred = p ? p->p_ucred : NOCRED; 580 /* 581 * Disallow multiple mounts of the same device. 582 * Disallow mounting of a device that is currently in use 583 * (except for root, which might share swap device for miniroot). 584 * Flush out any old buffers remaining from a previous use. 585 */ 586 if ((error = vfs_mountedon(devvp)) != 0) 587 return (error); 588 if (vcount(devvp) > 1 && devvp != rootvp) 589 return (EBUSY); 590 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 591 error = vinvalbuf(devvp, V_SAVE, cred, p, 0, 0); 592 VOP_UNLOCK(devvp, 0); 593 if (error) 594 return (error); 595 596 ronly = (mp->mnt_flag & MNT_RDONLY) != 0; 597 error = VOP_OPEN(devvp, ronly ? FREAD : FREAD|FWRITE, FSCRED, p); 598 if (error) 599 return (error); 600 if (VOP_IOCTL(devvp, DIOCGPART, (caddr_t)&dpart, FREAD, cred, p) != 0) 601 size = DEV_BSIZE; 602 else 603 size = dpart.disklab->d_secsize; 604 605 bp = NULL; 606 ump = NULL; 607 error = bread(devvp, (ufs_daddr_t)(SBOFF / size), SBSIZE, cred, &bp); 608 if (error) 609 goto out; 610 611 fs = (struct fs*)bp->b_data; 612 if (fs->fs_magic == FS_MAGIC) { 613 sbsize = fs->fs_sbsize; 614 #ifdef FFS_EI 615 needswap = 0; 616 } else if (fs->fs_magic == bswap32(FS_MAGIC)) { 617 sbsize = bswap32(fs->fs_sbsize); 618 needswap = 1; 619 #endif 620 } else { 621 error = EINVAL; 622 goto out; 623 } 624 if (sbsize > MAXBSIZE || sbsize < sizeof(struct fs)) { 625 error = EINVAL; 626 goto out; 627 } 628 629 fs = malloc((u_long)sbsize, M_UFSMNT, M_WAITOK); 630 memcpy(fs, bp->b_data, sbsize); 631 #ifdef FFS_EI 632 if (needswap) { 633 ffs_sb_swap((struct fs*)bp->b_data, fs); 634 fs->fs_flags |= FS_SWAPPED; 635 } else 636 #endif 637 fs->fs_flags &= ~FS_SWAPPED; 638 ffs_oldfscompat(fs); 639 640 if (fs->fs_bsize > MAXBSIZE || fs->fs_bsize < sizeof(struct fs)) { 641 error = EINVAL; 642 goto out; 643 } 644 /* make sure cylinder group summary area is a reasonable size. */ 645 if (fs->fs_cgsize == 0 || fs->fs_cpg == 0 || 646 fs->fs_ncg > fs->fs_ncyl / fs->fs_cpg + 1 || 647 fs->fs_cssize > 648 fragroundup(fs, fs->fs_ncg * sizeof(struct csum))) { 649 error = EINVAL; /* XXX needs translation */ 650 goto out2; 651 } 652 /* XXX updating 4.2 FFS superblocks trashes rotational layout tables */ 653 if (fs->fs_postblformat == FS_42POSTBLFMT && !ronly) { 654 error = EROFS; /* XXX what should be returned? */ 655 goto out2; 656 } 657 658 ump = malloc(sizeof *ump, M_UFSMNT, M_WAITOK); 659 memset((caddr_t)ump, 0, sizeof *ump); 660 ump->um_fs = fs; 661 if (fs->fs_sbsize < SBSIZE) 662 bp->b_flags |= B_INVAL; 663 brelse(bp); 664 bp = NULL; 665 fs->fs_ronly = ronly; 666 if (ronly == 0) { 667 fs->fs_clean <<= 1; 668 fs->fs_fmod = 1; 669 } 670 size = fs->fs_cssize; 671 blks = howmany(size, fs->fs_fsize); 672 if (fs->fs_contigsumsize > 0) 673 size += fs->fs_ncg * sizeof(int32_t); 674 size += fs->fs_ncg * sizeof(*fs->fs_contigdirs); 675 space = malloc((u_long)size, M_UFSMNT, M_WAITOK); 676 fs->fs_csp = space; 677 for (i = 0; i < blks; i += fs->fs_frag) { 678 size = fs->fs_bsize; 679 if (i + fs->fs_frag > blks) 680 size = (blks - i) * fs->fs_fsize; 681 error = bread(devvp, fsbtodb(fs, fs->fs_csaddr + i), size, 682 cred, &bp); 683 if (error) { 684 free(fs->fs_csp, M_UFSMNT); 685 goto out2; 686 } 687 #ifdef FFS_EI 688 if (needswap) 689 ffs_csum_swap((struct csum *)bp->b_data, 690 (struct csum *)space, size); 691 else 692 #endif 693 memcpy(space, bp->b_data, (u_int)size); 694 695 space = (char *)space + size; 696 brelse(bp); 697 bp = NULL; 698 } 699 if (fs->fs_contigsumsize > 0) { 700 fs->fs_maxcluster = lp = space; 701 for (i = 0; i < fs->fs_ncg; i++) 702 *lp++ = fs->fs_contigsumsize; 703 space = lp; 704 } 705 size = fs->fs_ncg * sizeof(*fs->fs_contigdirs); 706 fs->fs_contigdirs = space; 707 space = (char *)space + size; 708 memset(fs->fs_contigdirs, 0, size); 709 /* Compatibility for old filesystems - XXX */ 710 if (fs->fs_avgfilesize <= 0) 711 fs->fs_avgfilesize = AVFILESIZ; 712 if (fs->fs_avgfpdir <= 0) 713 fs->fs_avgfpdir = AFPDIR; 714 mp->mnt_data = (qaddr_t)ump; 715 mp->mnt_stat.f_fsid.val[0] = (long)dev; 716 mp->mnt_stat.f_fsid.val[1] = makefstype(MOUNT_FFS); 717 mp->mnt_maxsymlinklen = fs->fs_maxsymlinklen; 718 mp->mnt_flag |= MNT_LOCAL; 719 #ifdef FFS_EI 720 if (needswap) 721 ump->um_flags |= UFS_NEEDSWAP; 722 #endif 723 ump->um_mountp = mp; 724 ump->um_dev = dev; 725 ump->um_devvp = devvp; 726 ump->um_nindir = fs->fs_nindir; 727 ump->um_bptrtodb = fs->fs_fsbtodb; 728 ump->um_seqinc = fs->fs_frag; 729 for (i = 0; i < MAXQUOTAS; i++) 730 ump->um_quotas[i] = NULLVP; 731 devvp->v_specmountpoint = mp; 732 ump->um_savedmaxfilesize = fs->fs_maxfilesize; /* XXX */ 733 maxfilesize = (u_int64_t)0x80000000 * fs->fs_bsize - 1; /* XXX */ 734 if (fs->fs_maxfilesize > maxfilesize) /* XXX */ 735 fs->fs_maxfilesize = maxfilesize; /* XXX */ 736 if (ronly == 0 && (fs->fs_flags & FS_DOSOFTDEP)) { 737 error = softdep_mount(devvp, mp, fs, cred); 738 if (error) { 739 free(fs->fs_csp, M_UFSMNT); 740 goto out; 741 } 742 } 743 return (0); 744 out2: 745 free(fs, M_UFSMNT); 746 out: 747 devvp->v_specmountpoint = NULL; 748 if (bp) 749 brelse(bp); 750 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 751 (void)VOP_CLOSE(devvp, ronly ? FREAD : FREAD|FWRITE, cred, p); 752 VOP_UNLOCK(devvp, 0); 753 if (ump) { 754 free(ump, M_UFSMNT); 755 mp->mnt_data = (qaddr_t)0; 756 } 757 return (error); 758 } 759 760 /* 761 * Sanity checks for old file systems. 762 * 763 * XXX - goes away some day. 764 */ 765 int 766 ffs_oldfscompat(fs) 767 struct fs *fs; 768 { 769 int i; 770 771 fs->fs_npsect = max(fs->fs_npsect, fs->fs_nsect); /* XXX */ 772 fs->fs_interleave = max(fs->fs_interleave, 1); /* XXX */ 773 if (fs->fs_postblformat == FS_42POSTBLFMT) /* XXX */ 774 fs->fs_nrpos = 8; /* XXX */ 775 if (fs->fs_inodefmt < FS_44INODEFMT) { /* XXX */ 776 u_int64_t sizepb = fs->fs_bsize; /* XXX */ 777 /* XXX */ 778 fs->fs_maxfilesize = fs->fs_bsize * NDADDR - 1; /* XXX */ 779 for (i = 0; i < NIADDR; i++) { /* XXX */ 780 sizepb *= NINDIR(fs); /* XXX */ 781 fs->fs_maxfilesize += sizepb; /* XXX */ 782 } /* XXX */ 783 fs->fs_qbmask = ~fs->fs_bmask; /* XXX */ 784 fs->fs_qfmask = ~fs->fs_fmask; /* XXX */ 785 } /* XXX */ 786 return (0); 787 } 788 789 /* 790 * unmount system call 791 */ 792 int 793 ffs_unmount(mp, mntflags, p) 794 struct mount *mp; 795 int mntflags; 796 struct proc *p; 797 { 798 struct ufsmount *ump; 799 struct fs *fs; 800 int error, flags; 801 802 flags = 0; 803 if (mntflags & MNT_FORCE) 804 flags |= FORCECLOSE; 805 if (mp->mnt_flag & MNT_SOFTDEP) { 806 if ((error = softdep_flushfiles(mp, flags, p)) != 0) 807 return (error); 808 } else { 809 if ((error = ffs_flushfiles(mp, flags, p)) != 0) 810 return (error); 811 } 812 ump = VFSTOUFS(mp); 813 fs = ump->um_fs; 814 if (fs->fs_ronly == 0 && 815 ffs_cgupdate(ump, MNT_WAIT) == 0 && 816 fs->fs_clean & FS_WASCLEAN) { 817 if (mp->mnt_flag & MNT_SOFTDEP) 818 fs->fs_flags &= ~FS_DOSOFTDEP; 819 fs->fs_clean = FS_ISCLEAN; 820 (void) ffs_sbupdate(ump, MNT_WAIT); 821 } 822 if (ump->um_devvp->v_type != VBAD) 823 ump->um_devvp->v_specmountpoint = NULL; 824 vn_lock(ump->um_devvp, LK_EXCLUSIVE | LK_RETRY); 825 error = VOP_CLOSE(ump->um_devvp, fs->fs_ronly ? FREAD : FREAD|FWRITE, 826 NOCRED, p); 827 vput(ump->um_devvp); 828 free(fs->fs_csp, M_UFSMNT); 829 free(fs, M_UFSMNT); 830 free(ump, M_UFSMNT); 831 mp->mnt_data = (qaddr_t)0; 832 mp->mnt_flag &= ~MNT_LOCAL; 833 return (error); 834 } 835 836 /* 837 * Flush out all the files in a filesystem. 838 */ 839 int 840 ffs_flushfiles(mp, flags, p) 841 struct mount *mp; 842 int flags; 843 struct proc *p; 844 { 845 extern int doforce; 846 struct ufsmount *ump; 847 int error; 848 849 if (!doforce) 850 flags &= ~FORCECLOSE; 851 ump = VFSTOUFS(mp); 852 #ifdef QUOTA 853 if (mp->mnt_flag & MNT_QUOTA) { 854 int i; 855 if ((error = vflush(mp, NULLVP, SKIPSYSTEM|flags)) != 0) 856 return (error); 857 for (i = 0; i < MAXQUOTAS; i++) { 858 if (ump->um_quotas[i] == NULLVP) 859 continue; 860 quotaoff(p, mp, i); 861 } 862 /* 863 * Here we fall through to vflush again to ensure 864 * that we have gotten rid of all the system vnodes. 865 */ 866 } 867 #endif 868 /* 869 * Flush all the files. 870 */ 871 error = vflush(mp, NULLVP, flags); 872 if (error) 873 return (error); 874 /* 875 * Flush filesystem metadata. 876 */ 877 vn_lock(ump->um_devvp, LK_EXCLUSIVE | LK_RETRY); 878 error = VOP_FSYNC(ump->um_devvp, p->p_ucred, FSYNC_WAIT, 0, 0, p); 879 VOP_UNLOCK(ump->um_devvp, 0); 880 return (error); 881 } 882 883 /* 884 * Get file system statistics. 885 */ 886 int 887 ffs_statfs(mp, sbp, p) 888 struct mount *mp; 889 struct statfs *sbp; 890 struct proc *p; 891 { 892 struct ufsmount *ump; 893 struct fs *fs; 894 895 ump = VFSTOUFS(mp); 896 fs = ump->um_fs; 897 if (fs->fs_magic != FS_MAGIC) 898 panic("ffs_statfs"); 899 #ifdef COMPAT_09 900 sbp->f_type = 1; 901 #else 902 sbp->f_type = 0; 903 #endif 904 sbp->f_bsize = fs->fs_fsize; 905 sbp->f_iosize = fs->fs_bsize; 906 sbp->f_blocks = fs->fs_dsize; 907 sbp->f_bfree = fs->fs_cstotal.cs_nbfree * fs->fs_frag + 908 fs->fs_cstotal.cs_nffree; 909 sbp->f_bavail = (long) (((u_int64_t) fs->fs_dsize * (u_int64_t) 910 (100 - fs->fs_minfree) / (u_int64_t) 100) - 911 (u_int64_t) (fs->fs_dsize - sbp->f_bfree)); 912 sbp->f_files = fs->fs_ncg * fs->fs_ipg - ROOTINO; 913 sbp->f_ffree = fs->fs_cstotal.cs_nifree; 914 if (sbp != &mp->mnt_stat) { 915 memcpy(sbp->f_mntonname, mp->mnt_stat.f_mntonname, MNAMELEN); 916 memcpy(sbp->f_mntfromname, mp->mnt_stat.f_mntfromname, MNAMELEN); 917 } 918 strncpy(sbp->f_fstypename, mp->mnt_op->vfs_name, MFSNAMELEN); 919 return (0); 920 } 921 922 /* 923 * Go through the disk queues to initiate sandbagged IO; 924 * go through the inodes to write those that have been modified; 925 * initiate the writing of the super block if it has been modified. 926 * 927 * Note: we are always called with the filesystem marked `MPBUSY'. 928 */ 929 int 930 ffs_sync(mp, waitfor, cred, p) 931 struct mount *mp; 932 int waitfor; 933 struct ucred *cred; 934 struct proc *p; 935 { 936 struct vnode *vp, *nvp; 937 struct inode *ip; 938 struct ufsmount *ump = VFSTOUFS(mp); 939 struct fs *fs; 940 int error, allerror = 0; 941 942 fs = ump->um_fs; 943 if (fs->fs_fmod != 0 && fs->fs_ronly != 0) { /* XXX */ 944 printf("fs = %s\n", fs->fs_fsmnt); 945 panic("update: rofs mod"); 946 } 947 /* 948 * Write back each (modified) inode. 949 */ 950 simple_lock(&mntvnode_slock); 951 loop: 952 for (vp = LIST_FIRST(&mp->mnt_vnodelist); vp != NULL; vp = nvp) { 953 /* 954 * If the vnode that we are about to sync is no longer 955 * associated with this mount point, start over. 956 */ 957 if (vp->v_mount != mp) 958 goto loop; 959 simple_lock(&vp->v_interlock); 960 nvp = LIST_NEXT(vp, v_mntvnodes); 961 ip = VTOI(vp); 962 if (vp->v_type == VNON || 963 ((ip->i_flag & 964 (IN_ACCESS | IN_CHANGE | IN_UPDATE | IN_MODIFIED | IN_ACCESSED)) == 0 && 965 LIST_EMPTY(&vp->v_dirtyblkhd))) 966 { 967 simple_unlock(&vp->v_interlock); 968 continue; 969 } 970 simple_unlock(&mntvnode_slock); 971 error = vget(vp, LK_EXCLUSIVE | LK_NOWAIT | LK_INTERLOCK); 972 if (error) { 973 simple_lock(&mntvnode_slock); 974 if (error == ENOENT) 975 goto loop; 976 continue; 977 } 978 if ((error = VOP_FSYNC(vp, cred, 979 waitfor == MNT_WAIT ? FSYNC_WAIT : 0, 0, 0, p)) != 0) 980 allerror = error; 981 vput(vp); 982 simple_lock(&mntvnode_slock); 983 } 984 simple_unlock(&mntvnode_slock); 985 /* 986 * Force stale file system control information to be flushed. 987 */ 988 if (waitfor != MNT_LAZY) { 989 if (ump->um_mountp->mnt_flag & MNT_SOFTDEP) 990 waitfor = MNT_NOWAIT; 991 vn_lock(ump->um_devvp, LK_EXCLUSIVE | LK_RETRY); 992 if ((error = VOP_FSYNC(ump->um_devvp, cred, 993 waitfor == MNT_WAIT ? FSYNC_WAIT : 0, 0, 0, p)) != 0) 994 allerror = error; 995 VOP_UNLOCK(ump->um_devvp, 0); 996 } 997 #ifdef QUOTA 998 qsync(mp); 999 #endif 1000 /* 1001 * Write back modified superblock. 1002 */ 1003 if (fs->fs_fmod != 0) { 1004 fs->fs_fmod = 0; 1005 fs->fs_time = time.tv_sec; 1006 if ((error = ffs_cgupdate(ump, waitfor))) 1007 allerror = error; 1008 } 1009 return (allerror); 1010 } 1011 1012 /* 1013 * Look up a FFS dinode number to find its incore vnode, otherwise read it 1014 * in from disk. If it is in core, wait for the lock bit to clear, then 1015 * return the inode locked. Detection and handling of mount points must be 1016 * done by the calling routine. 1017 */ 1018 int 1019 ffs_vget(mp, ino, vpp) 1020 struct mount *mp; 1021 ino_t ino; 1022 struct vnode **vpp; 1023 { 1024 struct fs *fs; 1025 struct inode *ip; 1026 struct ufsmount *ump; 1027 struct buf *bp; 1028 struct vnode *vp; 1029 dev_t dev; 1030 int error; 1031 caddr_t cp; 1032 1033 ump = VFSTOUFS(mp); 1034 dev = ump->um_dev; 1035 1036 if ((*vpp = ufs_ihashget(dev, ino, LK_EXCLUSIVE)) != NULL) 1037 return (0); 1038 1039 /* Allocate a new vnode/inode. */ 1040 if ((error = getnewvnode(VT_UFS, mp, ffs_vnodeop_p, &vp)) != 0) { 1041 *vpp = NULL; 1042 return (error); 1043 } 1044 1045 /* 1046 * If someone beat us to it while sleeping in getnewvnode(), 1047 * push back the freshly allocated vnode we don't need, and return. 1048 */ 1049 do { 1050 if ((*vpp = ufs_ihashget(dev, ino, LK_EXCLUSIVE)) != NULL) { 1051 ungetnewvnode(vp); 1052 return (0); 1053 } 1054 } while (lockmgr(&ufs_hashlock, LK_EXCLUSIVE|LK_SLEEPFAIL, 0)); 1055 1056 /* 1057 * XXX MFS ends up here, too, to allocate an inode. Should we 1058 * XXX create another pool for MFS inodes? 1059 */ 1060 ip = pool_get(&ffs_inode_pool, PR_WAITOK); 1061 memset((caddr_t)ip, 0, sizeof(struct inode)); 1062 vp->v_data = ip; 1063 ip->i_vnode = vp; 1064 ip->i_fs = fs = ump->um_fs; 1065 ip->i_dev = dev; 1066 ip->i_number = ino; 1067 #ifdef QUOTA 1068 { 1069 int i; 1070 1071 for (i = 0; i < MAXQUOTAS; i++) 1072 ip->i_dquot[i] = NODQUOT; 1073 } 1074 #endif 1075 /* 1076 * Put it onto its hash chain and lock it so that other requests for 1077 * this inode will block if they arrive while we are sleeping waiting 1078 * for old data structures to be purged or for the contents of the 1079 * disk portion of this inode to be read. 1080 */ 1081 ufs_ihashins(ip); 1082 lockmgr(&ufs_hashlock, LK_RELEASE, 0); 1083 1084 /* Read in the disk contents for the inode, copy into the inode. */ 1085 error = bread(ump->um_devvp, fsbtodb(fs, ino_to_fsba(fs, ino)), 1086 (int)fs->fs_bsize, NOCRED, &bp); 1087 if (error) { 1088 /* 1089 * The inode does not contain anything useful, so it would 1090 * be misleading to leave it on its hash chain. With mode 1091 * still zero, it will be unlinked and returned to the free 1092 * list by vput(). 1093 */ 1094 vput(vp); 1095 brelse(bp); 1096 *vpp = NULL; 1097 return (error); 1098 } 1099 cp = (caddr_t)bp->b_data + (ino_to_fsbo(fs, ino) * DINODE_SIZE); 1100 #ifdef FFS_EI 1101 if (UFS_FSNEEDSWAP(fs)) 1102 ffs_dinode_swap((struct dinode *)cp, &ip->i_din.ffs_din); 1103 else 1104 #endif 1105 memcpy(&ip->i_din.ffs_din, cp, DINODE_SIZE); 1106 if (DOINGSOFTDEP(vp)) 1107 softdep_load_inodeblock(ip); 1108 else 1109 ip->i_ffs_effnlink = ip->i_ffs_nlink; 1110 brelse(bp); 1111 1112 /* 1113 * Initialize the vnode from the inode, check for aliases. 1114 * Note that the underlying vnode may have changed. 1115 */ 1116 error = ufs_vinit(mp, ffs_specop_p, ffs_fifoop_p, &vp); 1117 if (error) { 1118 vput(vp); 1119 *vpp = NULL; 1120 return (error); 1121 } 1122 /* 1123 * Finish inode initialization now that aliasing has been resolved. 1124 */ 1125 ip->i_devvp = ump->um_devvp; 1126 VREF(ip->i_devvp); 1127 /* 1128 * Ensure that uid and gid are correct. This is a temporary 1129 * fix until fsck has been changed to do the update. 1130 */ 1131 if (fs->fs_inodefmt < FS_44INODEFMT) { /* XXX */ 1132 ip->i_ffs_uid = ip->i_din.ffs_din.di_ouid; /* XXX */ 1133 ip->i_ffs_gid = ip->i_din.ffs_din.di_ogid; /* XXX */ 1134 } /* XXX */ 1135 1136 *vpp = vp; 1137 return (0); 1138 } 1139 1140 /* 1141 * File handle to vnode 1142 * 1143 * Have to be really careful about stale file handles: 1144 * - check that the inode number is valid 1145 * - call ffs_vget() to get the locked inode 1146 * - check for an unallocated inode (i_mode == 0) 1147 * - check that the given client host has export rights and return 1148 * those rights via. exflagsp and credanonp 1149 */ 1150 int 1151 ffs_fhtovp(mp, fhp, vpp) 1152 struct mount *mp; 1153 struct fid *fhp; 1154 struct vnode **vpp; 1155 { 1156 struct ufid *ufhp; 1157 struct fs *fs; 1158 1159 ufhp = (struct ufid *)fhp; 1160 fs = VFSTOUFS(mp)->um_fs; 1161 if (ufhp->ufid_ino < ROOTINO || 1162 ufhp->ufid_ino >= fs->fs_ncg * fs->fs_ipg) 1163 return (ESTALE); 1164 return (ufs_fhtovp(mp, ufhp, vpp)); 1165 } 1166 1167 /* 1168 * Vnode pointer to File handle 1169 */ 1170 /* ARGSUSED */ 1171 int 1172 ffs_vptofh(vp, fhp) 1173 struct vnode *vp; 1174 struct fid *fhp; 1175 { 1176 struct inode *ip; 1177 struct ufid *ufhp; 1178 1179 ip = VTOI(vp); 1180 ufhp = (struct ufid *)fhp; 1181 ufhp->ufid_len = sizeof(struct ufid); 1182 ufhp->ufid_ino = ip->i_number; 1183 ufhp->ufid_gen = ip->i_ffs_gen; 1184 return (0); 1185 } 1186 1187 void 1188 ffs_init() 1189 { 1190 if (ffs_initcount++ > 0) 1191 return; 1192 1193 softdep_initialize(); 1194 ufs_init(); 1195 1196 pool_init(&ffs_inode_pool, sizeof(struct inode), 0, 0, 0, "ffsinopl", 1197 0, pool_page_alloc_nointr, pool_page_free_nointr, M_FFSNODE); 1198 } 1199 1200 void 1201 ffs_done() 1202 { 1203 if (--ffs_initcount > 0) 1204 return; 1205 1206 /* XXX softdep cleanup ? */ 1207 ufs_done(); 1208 pool_destroy(&ffs_inode_pool); 1209 } 1210 1211 int 1212 ffs_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p) 1213 int *name; 1214 u_int namelen; 1215 void *oldp; 1216 size_t *oldlenp; 1217 void *newp; 1218 size_t newlen; 1219 struct proc *p; 1220 { 1221 extern int doclusterread, doclusterwrite, doreallocblks, doasyncfree; 1222 extern int ffs_log_changeopt; 1223 1224 /* all sysctl names at this level are terminal */ 1225 if (namelen != 1) 1226 return (ENOTDIR); /* overloaded */ 1227 1228 switch (name[0]) { 1229 case FFS_CLUSTERREAD: 1230 return (sysctl_int(oldp, oldlenp, newp, newlen, 1231 &doclusterread)); 1232 case FFS_CLUSTERWRITE: 1233 return (sysctl_int(oldp, oldlenp, newp, newlen, 1234 &doclusterwrite)); 1235 case FFS_REALLOCBLKS: 1236 return (sysctl_int(oldp, oldlenp, newp, newlen, 1237 &doreallocblks)); 1238 case FFS_ASYNCFREE: 1239 return (sysctl_int(oldp, oldlenp, newp, newlen, &doasyncfree)); 1240 case FFS_LOG_CHANGEOPT: 1241 return (sysctl_int(oldp, oldlenp, newp, newlen, 1242 &ffs_log_changeopt)); 1243 default: 1244 return (EOPNOTSUPP); 1245 } 1246 /* NOTREACHED */ 1247 } 1248 1249 /* 1250 * Write a superblock and associated information back to disk. 1251 */ 1252 int 1253 ffs_sbupdate(mp, waitfor) 1254 struct ufsmount *mp; 1255 int waitfor; 1256 { 1257 struct fs *fs = mp->um_fs; 1258 struct buf *bp; 1259 int i, error = 0; 1260 int32_t saved_nrpos = fs->fs_nrpos; 1261 int64_t saved_qbmask = fs->fs_qbmask; 1262 int64_t saved_qfmask = fs->fs_qfmask; 1263 u_int64_t saved_maxfilesize = fs->fs_maxfilesize; 1264 u_int8_t saveflag; 1265 1266 /* Restore compatibility to old file systems. XXX */ 1267 if (fs->fs_postblformat == FS_42POSTBLFMT) /* XXX */ 1268 fs->fs_nrpos = -1; /* XXX */ 1269 if (fs->fs_inodefmt < FS_44INODEFMT) { /* XXX */ 1270 int32_t *lp, tmp; /* XXX */ 1271 /* XXX */ 1272 lp = (int32_t *)&fs->fs_qbmask; /* XXX nuke qfmask too */ 1273 tmp = lp[4]; /* XXX */ 1274 for (i = 4; i > 0; i--) /* XXX */ 1275 lp[i] = lp[i-1]; /* XXX */ 1276 lp[0] = tmp; /* XXX */ 1277 } /* XXX */ 1278 fs->fs_maxfilesize = mp->um_savedmaxfilesize; /* XXX */ 1279 1280 bp = getblk(mp->um_devvp, SBOFF >> (fs->fs_fshift - fs->fs_fsbtodb), 1281 (int)fs->fs_sbsize, 0, 0); 1282 saveflag = fs->fs_flags & FS_INTERNAL; 1283 fs->fs_flags &= ~FS_INTERNAL; 1284 memcpy(bp->b_data, fs, fs->fs_sbsize); 1285 #ifdef FFS_EI 1286 if (mp->um_flags & UFS_NEEDSWAP) 1287 ffs_sb_swap(fs, (struct fs*)bp->b_data); 1288 #endif 1289 1290 fs->fs_flags |= saveflag; 1291 fs->fs_nrpos = saved_nrpos; /* XXX */ 1292 fs->fs_qbmask = saved_qbmask; /* XXX */ 1293 fs->fs_qfmask = saved_qfmask; /* XXX */ 1294 fs->fs_maxfilesize = saved_maxfilesize; /* XXX */ 1295 1296 if (waitfor == MNT_WAIT) 1297 error = bwrite(bp); 1298 else 1299 bawrite(bp); 1300 return (error); 1301 } 1302 1303 int 1304 ffs_cgupdate(mp, waitfor) 1305 struct ufsmount *mp; 1306 int waitfor; 1307 { 1308 struct fs *fs = mp->um_fs; 1309 struct buf *bp; 1310 int blks; 1311 void *space; 1312 int i, size, error = 0, allerror = 0; 1313 1314 allerror = ffs_sbupdate(mp, waitfor); 1315 blks = howmany(fs->fs_cssize, fs->fs_fsize); 1316 space = fs->fs_csp; 1317 for (i = 0; i < blks; i += fs->fs_frag) { 1318 size = fs->fs_bsize; 1319 if (i + fs->fs_frag > blks) 1320 size = (blks - i) * fs->fs_fsize; 1321 bp = getblk(mp->um_devvp, fsbtodb(fs, fs->fs_csaddr + i), 1322 size, 0, 0); 1323 #ifdef FFS_EI 1324 if (mp->um_flags & UFS_NEEDSWAP) 1325 ffs_csum_swap((struct csum*)space, 1326 (struct csum*)bp->b_data, size); 1327 else 1328 #endif 1329 memcpy(bp->b_data, space, (u_int)size); 1330 space = (char *)space + size; 1331 if (waitfor == MNT_WAIT) 1332 error = bwrite(bp); 1333 else 1334 bawrite(bp); 1335 } 1336 if (!allerror && error) 1337 allerror = error; 1338 return (allerror); 1339 } 1340
Indexes created Sat Oct 18 17:09:52 GMT 2025