ffs_vfsops.c revision 138517
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 * 4. 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 */ 31 32#include <sys/cdefs.h> 33__FBSDID("$FreeBSD: head/sys/ufs/ffs/ffs_vfsops.c 138517 2004-12-07 15:09:30Z phk $"); 34 35#include "opt_mac.h" 36#include "opt_quota.h" 37#include "opt_ufs.h" 38#include "opt_ffs.h" 39 40#include <sys/param.h> 41#include <sys/systm.h> 42#include <sys/namei.h> 43#include <sys/proc.h> 44#include <sys/kernel.h> 45#include <sys/mac.h> 46#include <sys/vnode.h> 47#include <sys/mount.h> 48#include <sys/bio.h> 49#include <sys/buf.h> 50#include <sys/conf.h> 51#include <sys/fcntl.h> 52#include <sys/disk.h> 53#include <sys/malloc.h> 54#include <sys/mutex.h> 55 56#include <ufs/ufs/extattr.h> 57#include <ufs/ufs/quota.h> 58#include <ufs/ufs/ufsmount.h> 59#include <ufs/ufs/inode.h> 60#include <ufs/ufs/ufs_extern.h> 61 62#include <ufs/ffs/fs.h> 63#include <ufs/ffs/ffs_extern.h> 64 65#include <vm/vm.h> 66#include <vm/uma.h> 67#include <vm/vm_page.h> 68 69#include <geom/geom.h> 70#include <geom/geom_vfs.h> 71 72uma_zone_t uma_inode, uma_ufs1, uma_ufs2; 73 74static int ffs_sbupdate(struct ufsmount *, int); 75static int ffs_reload(struct mount *, struct thread *); 76static int ffs_mountfs(struct vnode *, struct mount *, struct thread *); 77static void ffs_oldfscompat_read(struct fs *, struct ufsmount *, 78 ufs2_daddr_t); 79static void ffs_oldfscompat_write(struct fs *, struct ufsmount *); 80static void ffs_ifree(struct ufsmount *ump, struct inode *ip); 81static vfs_init_t ffs_init; 82static vfs_uninit_t ffs_uninit; 83static vfs_extattrctl_t ffs_extattrctl; 84static vfs_cmount_t ffs_cmount; 85static vfs_mount_t ffs_mount; 86 87static struct vfsops ufs_vfsops = { 88 .vfs_extattrctl = ffs_extattrctl, 89 .vfs_fhtovp = ffs_fhtovp, 90 .vfs_init = ffs_init, 91 .vfs_mount = ffs_mount, 92 .vfs_cmount = ffs_cmount, 93 .vfs_quotactl = ufs_quotactl, 94 .vfs_root = ufs_root, 95 .vfs_statfs = ffs_statfs, 96 .vfs_sync = ffs_sync, 97 .vfs_uninit = ffs_uninit, 98 .vfs_unmount = ffs_unmount, 99 .vfs_vget = ffs_vget, 100 .vfs_vptofh = ffs_vptofh, 101}; 102 103VFS_SET(ufs_vfsops, ufs, 0); 104 105static b_strategy_t ffs_geom_strategy; 106 107static struct buf_ops ffs_ops = { 108 .bop_name = "FFS", 109 .bop_write = bufwrite, 110 .bop_strategy = ffs_geom_strategy, 111}; 112 113static const char *ffs_opts[] = { "from", "export", NULL }; 114 115static int 116ffs_mount(struct mount *mp, struct thread *td) 117{ 118 struct vnode *devvp; 119 struct ufsmount *ump = 0; 120 struct fs *fs; 121 int error, flags; 122 mode_t accessmode; 123 struct nameidata ndp; 124 struct export_args export; 125 char *fspec; 126 127 if (vfs_filteropt(mp->mnt_optnew, ffs_opts)) 128 return (EINVAL); 129 if (uma_inode == NULL) { 130 uma_inode = uma_zcreate("FFS inode", 131 sizeof(struct inode), NULL, NULL, NULL, NULL, 132 UMA_ALIGN_PTR, 0); 133 uma_ufs1 = uma_zcreate("FFS1 dinode", 134 sizeof(struct ufs1_dinode), NULL, NULL, NULL, NULL, 135 UMA_ALIGN_PTR, 0); 136 uma_ufs2 = uma_zcreate("FFS2 dinode", 137 sizeof(struct ufs2_dinode), NULL, NULL, NULL, NULL, 138 UMA_ALIGN_PTR, 0); 139 } 140 141 fspec = vfs_getopts(mp->mnt_optnew, "from", &error); 142 if (error) 143 return (error); 144 145 /* 146 * If updating, check whether changing from read-only to 147 * read/write; if there is no device name, that's all we do. 148 */ 149 if (mp->mnt_flag & MNT_UPDATE) { 150 ump = VFSTOUFS(mp); 151 fs = ump->um_fs; 152 devvp = ump->um_devvp; 153 if (fs->fs_ronly == 0 && 154 vfs_flagopt(mp->mnt_optnew, "ro", NULL, 0)) { 155 if ((error = vn_start_write(NULL, &mp, V_WAIT)) != 0) 156 return (error); 157 /* 158 * Flush any dirty data. 159 */ 160 if ((error = VFS_SYNC(mp, MNT_WAIT, 161 td->td_ucred, td)) != 0) { 162 vn_finished_write(mp); 163 return (error); 164 } 165 /* 166 * Check for and optionally get rid of files open 167 * for writing. 168 */ 169 flags = WRITECLOSE; 170 if (mp->mnt_flag & MNT_FORCE) 171 flags |= FORCECLOSE; 172 if (mp->mnt_flag & MNT_SOFTDEP) { 173 error = softdep_flushfiles(mp, flags, td); 174 } else { 175 error = ffs_flushfiles(mp, flags, td); 176 } 177 if (error) { 178 vn_finished_write(mp); 179 return (error); 180 } 181 if (fs->fs_pendingblocks != 0 || 182 fs->fs_pendinginodes != 0) { 183 printf("%s: %s: blocks %jd files %d\n", 184 fs->fs_fsmnt, "update error", 185 (intmax_t)fs->fs_pendingblocks, 186 fs->fs_pendinginodes); 187 fs->fs_pendingblocks = 0; 188 fs->fs_pendinginodes = 0; 189 } 190 if ((fs->fs_flags & (FS_UNCLEAN | FS_NEEDSFSCK)) == 0) 191 fs->fs_clean = 1; 192 if ((error = ffs_sbupdate(ump, MNT_WAIT)) != 0) { 193 fs->fs_ronly = 0; 194 fs->fs_clean = 0; 195 vn_finished_write(mp); 196 return (error); 197 } 198 vn_finished_write(mp); 199 DROP_GIANT(); 200 g_topology_lock(); 201 g_access(ump->um_cp, 0, -1, 0); 202 g_topology_unlock(); 203 PICKUP_GIANT(); 204 fs->fs_ronly = 1; 205 mp->mnt_flag |= MNT_RDONLY; 206 } 207 if ((mp->mnt_flag & MNT_RELOAD) && 208 (error = ffs_reload(mp, td)) != 0) 209 return (error); 210 if (fs->fs_ronly && 211 !vfs_flagopt(mp->mnt_optnew, "ro", NULL, 0)) { 212 /* 213 * If upgrade to read-write by non-root, then verify 214 * that user has necessary permissions on the device. 215 */ 216 if (suser(td)) { 217 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY, td); 218 if ((error = VOP_ACCESS(devvp, VREAD | VWRITE, 219 td->td_ucred, td)) != 0) { 220 VOP_UNLOCK(devvp, 0, td); 221 return (error); 222 } 223 VOP_UNLOCK(devvp, 0, td); 224 } 225 fs->fs_flags &= ~FS_UNCLEAN; 226 if (fs->fs_clean == 0) { 227 fs->fs_flags |= FS_UNCLEAN; 228 if ((mp->mnt_flag & MNT_FORCE) || 229 ((fs->fs_flags & FS_NEEDSFSCK) == 0 && 230 (fs->fs_flags & FS_DOSOFTDEP))) { 231 printf("WARNING: %s was not %s\n", 232 fs->fs_fsmnt, "properly dismounted"); 233 } else { 234 printf( 235"WARNING: R/W mount of %s denied. Filesystem is not clean - run fsck\n", 236 fs->fs_fsmnt); 237 return (EPERM); 238 } 239 } 240 DROP_GIANT(); 241 g_topology_lock(); 242 /* 243 * If we're the root device, we may not have an E count 244 * yet, get it now. 245 */ 246 if (ump->um_cp->ace == 0) 247 error = g_access(ump->um_cp, 0, 1, 1); 248 else 249 error = g_access(ump->um_cp, 0, 1, 0); 250 g_topology_unlock(); 251 PICKUP_GIANT(); 252 if (error) 253 return (error); 254 if ((error = vn_start_write(NULL, &mp, V_WAIT)) != 0) 255 return (error); 256 fs->fs_ronly = 0; 257 mp->mnt_flag &= ~MNT_RDONLY; 258 fs->fs_clean = 0; 259 if ((error = ffs_sbupdate(ump, MNT_WAIT)) != 0) { 260 vn_finished_write(mp); 261 return (error); 262 } 263 /* check to see if we need to start softdep */ 264 if ((fs->fs_flags & FS_DOSOFTDEP) && 265 (error = softdep_mount(devvp, mp, fs, td->td_ucred))){ 266 vn_finished_write(mp); 267 return (error); 268 } 269 if (fs->fs_snapinum[0] != 0) 270 ffs_snapshot_mount(mp); 271 vn_finished_write(mp); 272 } 273 /* 274 * Soft updates is incompatible with "async", 275 * so if we are doing softupdates stop the user 276 * from setting the async flag in an update. 277 * Softdep_mount() clears it in an initial mount 278 * or ro->rw remount. 279 */ 280 if (mp->mnt_flag & MNT_SOFTDEP) 281 mp->mnt_flag &= ~MNT_ASYNC; 282 /* 283 * If not updating name, process export requests. 284 */ 285 error = vfs_copyopt(mp->mnt_optnew, "export", &export, sizeof export); 286 if (error == 0 && export.ex_flags != 0) 287 return (vfs_export(mp, &export)); 288 /* 289 * If this is a snapshot request, take the snapshot. 290 */ 291 if (mp->mnt_flag & MNT_SNAPSHOT) 292 return (ffs_snapshot(mp, fspec)); 293 } 294 295 /* 296 * Not an update, or updating the name: look up the name 297 * and verify that it refers to a sensible disk device. 298 */ 299 NDINIT(&ndp, LOOKUP, FOLLOW, UIO_SYSSPACE, fspec, td); 300 if ((error = namei(&ndp)) != 0) 301 return (error); 302 NDFREE(&ndp, NDF_ONLY_PNBUF); 303 devvp = ndp.ni_vp; 304 if (!vn_isdisk(devvp, &error)) { 305 vrele(devvp); 306 return (error); 307 } 308 309 /* 310 * If mount by non-root, then verify that user has necessary 311 * permissions on the device. 312 */ 313 if (suser(td)) { 314 accessmode = VREAD; 315 if ((mp->mnt_flag & MNT_RDONLY) == 0) 316 accessmode |= VWRITE; 317 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY, td); 318 if ((error = VOP_ACCESS(devvp, accessmode, td->td_ucred, td))!= 0){ 319 vput(devvp); 320 return (error); 321 } 322 VOP_UNLOCK(devvp, 0, td); 323 } 324 325 if (mp->mnt_flag & MNT_UPDATE) { 326 /* 327 * Update only 328 * 329 * If it's not the same vnode, or at least the same device 330 * then it's not correct. 331 */ 332 333 if (devvp->v_rdev != ump->um_devvp->v_rdev) 334 error = EINVAL; /* needs translation */ 335 vrele(devvp); 336 if (error) 337 return (error); 338 } else { 339 /* 340 * New mount 341 * 342 * We need the name for the mount point (also used for 343 * "last mounted on") copied in. If an error occurs, 344 * the mount point is discarded by the upper level code. 345 * Note that vfs_mount() populates f_mntonname for us. 346 */ 347 if ((error = ffs_mountfs(devvp, mp, td)) != 0) { 348 vrele(devvp); 349 return (error); 350 } 351 } 352 vfs_mountedfrom(mp, fspec); 353 return (0); 354} 355 356/* 357 * Compatibility with old mount system call. 358 */ 359 360static int 361ffs_cmount(struct mntarg *ma, void *data, int flags, struct thread *td) 362{ 363 struct ufs_args args; 364 int error; 365 366 if (data == NULL) 367 return (EINVAL); 368 error = copyin(data, &args, sizeof args); 369 if (error) 370 return (error); 371 372 ma = mount_argsu(ma, "from", args.fspec, MAXPATHLEN); 373 ma = mount_arg(ma, "export", &args.export, sizeof args.export); 374 error = kernel_mount(ma, flags); 375 376 return (error); 377} 378 379/* 380 * Reload all incore data for a filesystem (used after running fsck on 381 * the root filesystem and finding things to fix). The filesystem must 382 * be mounted read-only. 383 * 384 * Things to do to update the mount: 385 * 1) invalidate all cached meta-data. 386 * 2) re-read superblock from disk. 387 * 3) re-read summary information from disk. 388 * 4) invalidate all inactive vnodes. 389 * 5) invalidate all cached file data. 390 * 6) re-read inode data for all active vnodes. 391 */ 392static int 393ffs_reload(struct mount *mp, struct thread *td) 394{ 395 struct vnode *vp, *nvp, *devvp; 396 struct inode *ip; 397 void *space; 398 struct buf *bp; 399 struct fs *fs, *newfs; 400 ufs2_daddr_t sblockloc; 401 int i, blks, size, error; 402 int32_t *lp; 403 404 if ((mp->mnt_flag & MNT_RDONLY) == 0) 405 return (EINVAL); 406 /* 407 * Step 1: invalidate all cached meta-data. 408 */ 409 devvp = VFSTOUFS(mp)->um_devvp; 410 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY, td); 411 if (vinvalbuf(devvp, 0, td->td_ucred, td, 0, 0) != 0) 412 panic("ffs_reload: dirty1"); 413 vfs_object_create(devvp, td, td->td_ucred); 414 VOP_UNLOCK(devvp, 0, td); 415 416 /* 417 * Step 2: re-read superblock from disk. 418 */ 419 fs = VFSTOUFS(mp)->um_fs; 420 if ((error = bread(devvp, btodb(fs->fs_sblockloc), fs->fs_sbsize, 421 NOCRED, &bp)) != 0) 422 return (error); 423 newfs = (struct fs *)bp->b_data; 424 if ((newfs->fs_magic != FS_UFS1_MAGIC && 425 newfs->fs_magic != FS_UFS2_MAGIC) || 426 newfs->fs_bsize > MAXBSIZE || 427 newfs->fs_bsize < sizeof(struct fs)) { 428 brelse(bp); 429 return (EIO); /* XXX needs translation */ 430 } 431 /* 432 * Copy pointer fields back into superblock before copying in XXX 433 * new superblock. These should really be in the ufsmount. XXX 434 * Note that important parameters (eg fs_ncg) are unchanged. 435 */ 436 newfs->fs_csp = fs->fs_csp; 437 newfs->fs_maxcluster = fs->fs_maxcluster; 438 newfs->fs_contigdirs = fs->fs_contigdirs; 439 newfs->fs_active = fs->fs_active; 440 /* The file system is still read-only. */ 441 newfs->fs_ronly = 1; 442 sblockloc = fs->fs_sblockloc; 443 bcopy(newfs, fs, (u_int)fs->fs_sbsize); 444 brelse(bp); 445 mp->mnt_maxsymlinklen = fs->fs_maxsymlinklen; 446 ffs_oldfscompat_read(fs, VFSTOUFS(mp), sblockloc); 447 if (fs->fs_pendingblocks != 0 || fs->fs_pendinginodes != 0) { 448 printf("%s: reload pending error: blocks %jd files %d\n", 449 fs->fs_fsmnt, (intmax_t)fs->fs_pendingblocks, 450 fs->fs_pendinginodes); 451 fs->fs_pendingblocks = 0; 452 fs->fs_pendinginodes = 0; 453 } 454 455 /* 456 * Step 3: re-read summary information from disk. 457 */ 458 blks = howmany(fs->fs_cssize, fs->fs_fsize); 459 space = fs->fs_csp; 460 for (i = 0; i < blks; i += fs->fs_frag) { 461 size = fs->fs_bsize; 462 if (i + fs->fs_frag > blks) 463 size = (blks - i) * fs->fs_fsize; 464 error = bread(devvp, fsbtodb(fs, fs->fs_csaddr + i), size, 465 NOCRED, &bp); 466 if (error) 467 return (error); 468 bcopy(bp->b_data, space, (u_int)size); 469 space = (char *)space + size; 470 brelse(bp); 471 } 472 /* 473 * We no longer know anything about clusters per cylinder group. 474 */ 475 if (fs->fs_contigsumsize > 0) { 476 lp = fs->fs_maxcluster; 477 for (i = 0; i < fs->fs_ncg; i++) 478 *lp++ = fs->fs_contigsumsize; 479 } 480 481loop: 482 MNT_ILOCK(mp); 483 MNT_VNODE_FOREACH(vp, mp, nvp) { 484 VI_LOCK(vp); 485 if (vp->v_iflag & VI_XLOCK) { 486 VI_UNLOCK(vp); 487 continue; 488 } 489 MNT_IUNLOCK(mp); 490 /* 491 * Step 4: invalidate all inactive vnodes. 492 */ 493 if (vp->v_usecount == 0) { 494 vgonel(vp, td); 495 goto loop; 496 } 497 /* 498 * Step 5: invalidate all cached file data. 499 */ 500 if (vget(vp, LK_EXCLUSIVE | LK_INTERLOCK, td)) { 501 goto loop; 502 } 503 if (vinvalbuf(vp, 0, td->td_ucred, td, 0, 0)) 504 panic("ffs_reload: dirty2"); 505 /* 506 * Step 6: re-read inode data for all active vnodes. 507 */ 508 ip = VTOI(vp); 509 error = 510 bread(devvp, fsbtodb(fs, ino_to_fsba(fs, ip->i_number)), 511 (int)fs->fs_bsize, NOCRED, &bp); 512 if (error) { 513 VOP_UNLOCK(vp, 0, td); 514 vrele(vp); 515 return (error); 516 } 517 ffs_load_inode(bp, ip, fs, ip->i_number); 518 ip->i_effnlink = ip->i_nlink; 519 brelse(bp); 520 VOP_UNLOCK(vp, 0, td); 521 vrele(vp); 522 MNT_ILOCK(mp); 523 } 524 MNT_IUNLOCK(mp); 525 return (0); 526} 527 528/* 529 * Possible superblock locations ordered from most to least likely. 530 */ 531static int sblock_try[] = SBLOCKSEARCH; 532 533/* 534 * Common code for mount and mountroot 535 */ 536static int 537ffs_mountfs(devvp, mp, td) 538 struct vnode *devvp; 539 struct mount *mp; 540 struct thread *td; 541{ 542 struct ufsmount *ump; 543 struct buf *bp; 544 struct fs *fs; 545 struct cdev *dev; 546 void *space; 547 ufs2_daddr_t sblockloc; 548 int error, i, blks, size, ronly; 549 int32_t *lp; 550 struct ucred *cred; 551 struct g_consumer *cp; 552 553 dev = devvp->v_rdev; 554 cred = td ? td->td_ucred : NOCRED; 555 556 vfs_object_create(devvp, td, td->td_ucred); 557 ronly = (mp->mnt_flag & MNT_RDONLY) != 0; 558 DROP_GIANT(); 559 g_topology_lock(); 560 error = g_vfs_open(devvp, &cp, "ffs", ronly ? 0 : 1); 561 562 /* 563 * If we are a root mount, drop the E flag so fsck can do its magic. 564 * We will pick it up again when we remount R/W. 565 */ 566 if (error == 0 && ronly && (mp->mnt_flag & MNT_ROOTFS)) 567 error = g_access(cp, 0, 0, -1); 568 g_topology_unlock(); 569 PICKUP_GIANT(); 570 VOP_UNLOCK(devvp, 0, td); 571 if (error) 572 return (error); 573 if (devvp->v_rdev->si_iosize_max != 0) 574 mp->mnt_iosize_max = devvp->v_rdev->si_iosize_max; 575 if (mp->mnt_iosize_max > MAXPHYS) 576 mp->mnt_iosize_max = MAXPHYS; 577 578 devvp->v_bufobj.bo_private = cp; 579 devvp->v_bufobj.bo_ops = &ffs_ops; 580 581 bp = NULL; 582 ump = NULL; 583 fs = NULL; 584 sblockloc = 0; 585 /* 586 * Try reading the superblock in each of its possible locations. 587 */ 588 for (i = 0; sblock_try[i] != -1; i++) { 589 if ((error = bread(devvp, sblock_try[i] / DEV_BSIZE, SBLOCKSIZE, 590 cred, &bp)) != 0) 591 goto out; 592 fs = (struct fs *)bp->b_data; 593 sblockloc = sblock_try[i]; 594 if ((fs->fs_magic == FS_UFS1_MAGIC || 595 (fs->fs_magic == FS_UFS2_MAGIC && 596 (fs->fs_sblockloc == sblockloc || 597 (fs->fs_old_flags & FS_FLAGS_UPDATED) == 0))) && 598 fs->fs_bsize <= MAXBSIZE && 599 fs->fs_bsize >= sizeof(struct fs)) 600 break; 601 brelse(bp); 602 bp = NULL; 603 } 604 if (sblock_try[i] == -1) { 605 error = EINVAL; /* XXX needs translation */ 606 goto out; 607 } 608 fs->fs_fmod = 0; 609 fs->fs_flags &= ~FS_INDEXDIRS; /* no support for directory indicies */ 610 fs->fs_flags &= ~FS_UNCLEAN; 611 if (fs->fs_clean == 0) { 612 fs->fs_flags |= FS_UNCLEAN; 613 if (ronly || (mp->mnt_flag & MNT_FORCE) || 614 ((fs->fs_flags & FS_NEEDSFSCK) == 0 && 615 (fs->fs_flags & FS_DOSOFTDEP))) { 616 printf( 617"WARNING: %s was not properly dismounted\n", 618 fs->fs_fsmnt); 619 } else { 620 printf( 621"WARNING: R/W mount of %s denied. Filesystem is not clean - run fsck\n", 622 fs->fs_fsmnt); 623 error = EPERM; 624 goto out; 625 } 626 if ((fs->fs_pendingblocks != 0 || fs->fs_pendinginodes != 0) && 627 (mp->mnt_flag & MNT_FORCE)) { 628 printf("%s: lost blocks %jd files %d\n", fs->fs_fsmnt, 629 (intmax_t)fs->fs_pendingblocks, 630 fs->fs_pendinginodes); 631 fs->fs_pendingblocks = 0; 632 fs->fs_pendinginodes = 0; 633 } 634 } 635 if (fs->fs_pendingblocks != 0 || fs->fs_pendinginodes != 0) { 636 printf("%s: mount pending error: blocks %jd files %d\n", 637 fs->fs_fsmnt, (intmax_t)fs->fs_pendingblocks, 638 fs->fs_pendinginodes); 639 fs->fs_pendingblocks = 0; 640 fs->fs_pendinginodes = 0; 641 } 642 ump = malloc(sizeof *ump, M_UFSMNT, M_WAITOK | M_ZERO); 643 ump->um_cp = cp; 644 ump->um_bo = &devvp->v_bufobj; 645 ump->um_fs = malloc((u_long)fs->fs_sbsize, M_UFSMNT, M_WAITOK); 646 if (fs->fs_magic == FS_UFS1_MAGIC) { 647 ump->um_fstype = UFS1; 648 ump->um_balloc = ffs_balloc_ufs1; 649 } else { 650 ump->um_fstype = UFS2; 651 ump->um_balloc = ffs_balloc_ufs2; 652 } 653 ump->um_blkatoff = ffs_blkatoff; 654 ump->um_truncate = ffs_truncate; 655 ump->um_update = ffs_update; 656 ump->um_valloc = ffs_valloc; 657 ump->um_vfree = ffs_vfree; 658 ump->um_ifree = ffs_ifree; 659 bcopy(bp->b_data, ump->um_fs, (u_int)fs->fs_sbsize); 660 if (fs->fs_sbsize < SBLOCKSIZE) 661 bp->b_flags |= B_INVAL | B_NOCACHE; 662 brelse(bp); 663 bp = NULL; 664 fs = ump->um_fs; 665 ffs_oldfscompat_read(fs, ump, sblockloc); 666 fs->fs_ronly = ronly; 667 size = fs->fs_cssize; 668 blks = howmany(size, fs->fs_fsize); 669 if (fs->fs_contigsumsize > 0) 670 size += fs->fs_ncg * sizeof(int32_t); 671 size += fs->fs_ncg * sizeof(u_int8_t); 672 space = malloc((u_long)size, M_UFSMNT, M_WAITOK); 673 fs->fs_csp = space; 674 for (i = 0; i < blks; i += fs->fs_frag) { 675 size = fs->fs_bsize; 676 if (i + fs->fs_frag > blks) 677 size = (blks - i) * fs->fs_fsize; 678 if ((error = bread(devvp, fsbtodb(fs, fs->fs_csaddr + i), size, 679 cred, &bp)) != 0) { 680 free(fs->fs_csp, M_UFSMNT); 681 goto out; 682 } 683 bcopy(bp->b_data, space, (u_int)size); 684 space = (char *)space + size; 685 brelse(bp); 686 bp = NULL; 687 } 688 if (fs->fs_contigsumsize > 0) { 689 fs->fs_maxcluster = lp = space; 690 for (i = 0; i < fs->fs_ncg; i++) 691 *lp++ = fs->fs_contigsumsize; 692 space = lp; 693 } 694 size = fs->fs_ncg * sizeof(u_int8_t); 695 fs->fs_contigdirs = (u_int8_t *)space; 696 bzero(fs->fs_contigdirs, size); 697 fs->fs_active = NULL; 698 mp->mnt_data = (qaddr_t)ump; 699 mp->mnt_stat.f_fsid.val[0] = fs->fs_id[0]; 700 mp->mnt_stat.f_fsid.val[1] = fs->fs_id[1]; 701 if (fs->fs_id[0] == 0 || fs->fs_id[1] == 0 || 702 vfs_getvfs(&mp->mnt_stat.f_fsid)) 703 vfs_getnewfsid(mp); 704 mp->mnt_maxsymlinklen = fs->fs_maxsymlinklen; 705 mp->mnt_flag |= MNT_LOCAL; 706 if ((fs->fs_flags & FS_MULTILABEL) != 0) 707#ifdef MAC 708 mp->mnt_flag |= MNT_MULTILABEL; 709#else 710 printf( 711"WARNING: %s: multilabel flag on fs but no MAC support\n", 712 fs->fs_fsmnt); 713#endif 714 if ((fs->fs_flags & FS_ACLS) != 0) 715#ifdef UFS_ACL 716 mp->mnt_flag |= MNT_ACLS; 717#else 718 printf( 719"WARNING: %s: ACLs flag on fs but no ACLs support\n", 720 fs->fs_fsmnt); 721#endif 722 ump->um_mountp = mp; 723 ump->um_dev = dev; 724 ump->um_devvp = devvp; 725 ump->um_nindir = fs->fs_nindir; 726 ump->um_bptrtodb = fs->fs_fsbtodb; 727 ump->um_seqinc = fs->fs_frag; 728 for (i = 0; i < MAXQUOTAS; i++) 729 ump->um_quotas[i] = NULLVP; 730#ifdef UFS_EXTATTR 731 ufs_extattr_uepm_init(&ump->um_extattr); 732#endif 733 /* 734 * Set FS local "last mounted on" information (NULL pad) 735 */ 736 vfs_mountedfrom(mp, fs->fs_fsmnt); 737 738 if( mp->mnt_flag & MNT_ROOTFS) { 739 /* 740 * Root mount; update timestamp in mount structure. 741 * this will be used by the common root mount code 742 * to update the system clock. 743 */ 744 mp->mnt_time = fs->fs_time; 745 } 746 747 if (ronly == 0) { 748 if ((fs->fs_flags & FS_DOSOFTDEP) && 749 (error = softdep_mount(devvp, mp, fs, cred)) != 0) { 750 free(fs->fs_csp, M_UFSMNT); 751 goto out; 752 } 753 if (fs->fs_snapinum[0] != 0) 754 ffs_snapshot_mount(mp); 755 fs->fs_fmod = 1; 756 fs->fs_clean = 0; 757 (void) ffs_sbupdate(ump, MNT_WAIT); 758 } 759 /* 760 * Initialize filesystem stat information in mount struct. 761 */ 762#ifdef UFS_EXTATTR 763#ifdef UFS_EXTATTR_AUTOSTART 764 /* 765 * 766 * Auto-starting does the following: 767 * - check for /.attribute in the fs, and extattr_start if so 768 * - for each file in .attribute, enable that file with 769 * an attribute of the same name. 770 * Not clear how to report errors -- probably eat them. 771 * This would all happen while the filesystem was busy/not 772 * available, so would effectively be "atomic". 773 */ 774 (void) ufs_extattr_autostart(mp, td); 775#endif /* !UFS_EXTATTR_AUTOSTART */ 776#endif /* !UFS_EXTATTR */ 777 return (0); 778out: 779 if (bp) 780 brelse(bp); 781 if (cp != NULL) { 782 DROP_GIANT(); 783 g_topology_lock(); 784 g_wither_geom_close(cp->geom, ENXIO); 785 g_topology_unlock(); 786 PICKUP_GIANT(); 787 } 788 if (ump) { 789 free(ump->um_fs, M_UFSMNT); 790 free(ump, M_UFSMNT); 791 mp->mnt_data = (qaddr_t)0; 792 } 793 return (error); 794} 795 796#include <sys/sysctl.h> 797int bigcgs = 0; 798SYSCTL_INT(_debug, OID_AUTO, bigcgs, CTLFLAG_RW, &bigcgs, 0, ""); 799 800/* 801 * Sanity checks for loading old filesystem superblocks. 802 * See ffs_oldfscompat_write below for unwound actions. 803 * 804 * XXX - Parts get retired eventually. 805 * Unfortunately new bits get added. 806 */ 807static void 808ffs_oldfscompat_read(fs, ump, sblockloc) 809 struct fs *fs; 810 struct ufsmount *ump; 811 ufs2_daddr_t sblockloc; 812{ 813 off_t maxfilesize; 814 815 /* 816 * If not yet done, update fs_flags location and value of fs_sblockloc. 817 */ 818 if ((fs->fs_old_flags & FS_FLAGS_UPDATED) == 0) { 819 fs->fs_flags = fs->fs_old_flags; 820 fs->fs_old_flags |= FS_FLAGS_UPDATED; 821 fs->fs_sblockloc = sblockloc; 822 } 823 /* 824 * If not yet done, update UFS1 superblock with new wider fields. 825 */ 826 if (fs->fs_magic == FS_UFS1_MAGIC && fs->fs_maxbsize != fs->fs_bsize) { 827 fs->fs_maxbsize = fs->fs_bsize; 828 fs->fs_time = fs->fs_old_time; 829 fs->fs_size = fs->fs_old_size; 830 fs->fs_dsize = fs->fs_old_dsize; 831 fs->fs_csaddr = fs->fs_old_csaddr; 832 fs->fs_cstotal.cs_ndir = fs->fs_old_cstotal.cs_ndir; 833 fs->fs_cstotal.cs_nbfree = fs->fs_old_cstotal.cs_nbfree; 834 fs->fs_cstotal.cs_nifree = fs->fs_old_cstotal.cs_nifree; 835 fs->fs_cstotal.cs_nffree = fs->fs_old_cstotal.cs_nffree; 836 } 837 if (fs->fs_magic == FS_UFS1_MAGIC && 838 fs->fs_old_inodefmt < FS_44INODEFMT) { 839 fs->fs_maxfilesize = (u_quad_t) 1LL << 39; 840 fs->fs_qbmask = ~fs->fs_bmask; 841 fs->fs_qfmask = ~fs->fs_fmask; 842 } 843 if (fs->fs_magic == FS_UFS1_MAGIC) { 844 ump->um_savedmaxfilesize = fs->fs_maxfilesize; 845 maxfilesize = (u_int64_t)0x40000000 * fs->fs_bsize - 1; 846 if (fs->fs_maxfilesize > maxfilesize) 847 fs->fs_maxfilesize = maxfilesize; 848 } 849 /* Compatibility for old filesystems */ 850 if (fs->fs_avgfilesize <= 0) 851 fs->fs_avgfilesize = AVFILESIZ; 852 if (fs->fs_avgfpdir <= 0) 853 fs->fs_avgfpdir = AFPDIR; 854 if (bigcgs) { 855 fs->fs_save_cgsize = fs->fs_cgsize; 856 fs->fs_cgsize = fs->fs_bsize; 857 } 858} 859 860/* 861 * Unwinding superblock updates for old filesystems. 862 * See ffs_oldfscompat_read above for details. 863 * 864 * XXX - Parts get retired eventually. 865 * Unfortunately new bits get added. 866 */ 867static void 868ffs_oldfscompat_write(fs, ump) 869 struct fs *fs; 870 struct ufsmount *ump; 871{ 872 873 /* 874 * Copy back UFS2 updated fields that UFS1 inspects. 875 */ 876 if (fs->fs_magic == FS_UFS1_MAGIC) { 877 fs->fs_old_time = fs->fs_time; 878 fs->fs_old_cstotal.cs_ndir = fs->fs_cstotal.cs_ndir; 879 fs->fs_old_cstotal.cs_nbfree = fs->fs_cstotal.cs_nbfree; 880 fs->fs_old_cstotal.cs_nifree = fs->fs_cstotal.cs_nifree; 881 fs->fs_old_cstotal.cs_nffree = fs->fs_cstotal.cs_nffree; 882 fs->fs_maxfilesize = ump->um_savedmaxfilesize; 883 } 884 if (bigcgs) { 885 fs->fs_cgsize = fs->fs_save_cgsize; 886 fs->fs_save_cgsize = 0; 887 } 888} 889 890/* 891 * unmount system call 892 */ 893int 894ffs_unmount(mp, mntflags, td) 895 struct mount *mp; 896 int mntflags; 897 struct thread *td; 898{ 899 struct ufsmount *ump = VFSTOUFS(mp); 900 struct fs *fs; 901 int error, flags; 902 903 flags = 0; 904 if (mntflags & MNT_FORCE) { 905 flags |= FORCECLOSE; 906 } 907#ifdef UFS_EXTATTR 908 if ((error = ufs_extattr_stop(mp, td))) { 909 if (error != EOPNOTSUPP) 910 printf("ffs_unmount: ufs_extattr_stop returned %d\n", 911 error); 912 } else { 913 ufs_extattr_uepm_destroy(&ump->um_extattr); 914 } 915#endif 916 if (mp->mnt_flag & MNT_SOFTDEP) { 917 if ((error = softdep_flushfiles(mp, flags, td)) != 0) 918 return (error); 919 } else { 920 if ((error = ffs_flushfiles(mp, flags, td)) != 0) 921 return (error); 922 } 923 fs = ump->um_fs; 924 if (fs->fs_pendingblocks != 0 || fs->fs_pendinginodes != 0) { 925 printf("%s: unmount pending error: blocks %jd files %d\n", 926 fs->fs_fsmnt, (intmax_t)fs->fs_pendingblocks, 927 fs->fs_pendinginodes); 928 fs->fs_pendingblocks = 0; 929 fs->fs_pendinginodes = 0; 930 } 931 if (fs->fs_ronly == 0) { 932 fs->fs_clean = fs->fs_flags & (FS_UNCLEAN|FS_NEEDSFSCK) ? 0 : 1; 933 error = ffs_sbupdate(ump, MNT_WAIT); 934 if (error) { 935 fs->fs_clean = 0; 936 return (error); 937 } 938 } 939 vinvalbuf(ump->um_devvp, V_SAVE, NOCRED, td, 0, 0); 940 DROP_GIANT(); 941 g_topology_lock(); 942 g_wither_geom_close(ump->um_cp->geom, ENXIO); 943 g_topology_unlock(); 944 PICKUP_GIANT(); 945 vrele(ump->um_devvp); 946 free(fs->fs_csp, M_UFSMNT); 947 free(fs, M_UFSMNT); 948 free(ump, M_UFSMNT); 949 mp->mnt_data = (qaddr_t)0; 950 mp->mnt_flag &= ~MNT_LOCAL; 951 return (error); 952} 953 954/* 955 * Flush out all the files in a filesystem. 956 */ 957int 958ffs_flushfiles(mp, flags, td) 959 struct mount *mp; 960 int flags; 961 struct thread *td; 962{ 963 struct ufsmount *ump; 964 int error; 965 966 ump = VFSTOUFS(mp); 967#ifdef QUOTA 968 if (mp->mnt_flag & MNT_QUOTA) { 969 int i; 970 error = vflush(mp, 0, SKIPSYSTEM|flags, td); 971 if (error) 972 return (error); 973 for (i = 0; i < MAXQUOTAS; i++) { 974 if (ump->um_quotas[i] == NULLVP) 975 continue; 976 quotaoff(td, mp, i); 977 } 978 /* 979 * Here we fall through to vflush again to ensure 980 * that we have gotten rid of all the system vnodes. 981 */ 982 } 983#endif 984 ASSERT_VOP_LOCKED(ump->um_devvp, "ffs_flushfiles"); 985 if (ump->um_devvp->v_vflag & VV_COPYONWRITE) { 986 if ((error = vflush(mp, 0, SKIPSYSTEM | flags, td)) != 0) 987 return (error); 988 ffs_snapshot_unmount(mp); 989 /* 990 * Here we fall through to vflush again to ensure 991 * that we have gotten rid of all the system vnodes. 992 */ 993 } 994 /* 995 * Flush all the files. 996 */ 997 if ((error = vflush(mp, 0, flags, td)) != 0) 998 return (error); 999 /* 1000 * Flush filesystem metadata. 1001 */ 1002 vn_lock(ump->um_devvp, LK_EXCLUSIVE | LK_RETRY, td); 1003 error = VOP_FSYNC(ump->um_devvp, td->td_ucred, MNT_WAIT, td); 1004 VOP_UNLOCK(ump->um_devvp, 0, td); 1005 return (error); 1006} 1007 1008/* 1009 * Get filesystem statistics. 1010 */ 1011int 1012ffs_statfs(mp, sbp, td) 1013 struct mount *mp; 1014 struct statfs *sbp; 1015 struct thread *td; 1016{ 1017 struct ufsmount *ump; 1018 struct fs *fs; 1019 1020 ump = VFSTOUFS(mp); 1021 fs = ump->um_fs; 1022 if (fs->fs_magic != FS_UFS1_MAGIC && fs->fs_magic != FS_UFS2_MAGIC) 1023 panic("ffs_statfs"); 1024 sbp->f_version = STATFS_VERSION; 1025 sbp->f_bsize = fs->fs_fsize; 1026 sbp->f_iosize = fs->fs_bsize; 1027 sbp->f_blocks = fs->fs_dsize; 1028 sbp->f_bfree = fs->fs_cstotal.cs_nbfree * fs->fs_frag + 1029 fs->fs_cstotal.cs_nffree + dbtofsb(fs, fs->fs_pendingblocks); 1030 sbp->f_bavail = freespace(fs, fs->fs_minfree) + 1031 dbtofsb(fs, fs->fs_pendingblocks); 1032 sbp->f_files = fs->fs_ncg * fs->fs_ipg - ROOTINO; 1033 sbp->f_ffree = fs->fs_cstotal.cs_nifree + fs->fs_pendinginodes; 1034 sbp->f_namemax = NAME_MAX; 1035 return (0); 1036} 1037 1038/* 1039 * Go through the disk queues to initiate sandbagged IO; 1040 * go through the inodes to write those that have been modified; 1041 * initiate the writing of the super block if it has been modified. 1042 * 1043 * Note: we are always called with the filesystem marked `MPBUSY'. 1044 */ 1045int 1046ffs_sync(mp, waitfor, cred, td) 1047 struct mount *mp; 1048 int waitfor; 1049 struct ucred *cred; 1050 struct thread *td; 1051{ 1052 struct vnode *nvp, *vp, *devvp; 1053 struct inode *ip; 1054 struct ufsmount *ump = VFSTOUFS(mp); 1055 struct fs *fs; 1056 int error, count, wait, lockreq, allerror = 0; 1057 struct bufobj *bo; 1058 1059 fs = ump->um_fs; 1060 if (fs->fs_fmod != 0 && fs->fs_ronly != 0) { /* XXX */ 1061 printf("fs = %s\n", fs->fs_fsmnt); 1062 panic("ffs_sync: rofs mod"); 1063 } 1064 /* 1065 * Write back each (modified) inode. 1066 */ 1067 wait = 0; 1068 lockreq = LK_EXCLUSIVE | LK_NOWAIT; 1069 if (waitfor == MNT_WAIT) { 1070 wait = 1; 1071 lockreq = LK_EXCLUSIVE; 1072 } 1073 lockreq |= LK_INTERLOCK; 1074 MNT_ILOCK(mp); 1075loop: 1076 MNT_VNODE_FOREACH(vp, mp, nvp) { 1077 /* 1078 * Depend on the mntvnode_slock to keep things stable enough 1079 * for a quick test. Since there might be hundreds of 1080 * thousands of vnodes, we cannot afford even a subroutine 1081 * call unless there's a good chance that we have work to do. 1082 */ 1083 VI_LOCK(vp); 1084 if (vp->v_iflag & VI_XLOCK) { 1085 VI_UNLOCK(vp); 1086 continue; 1087 } 1088 ip = VTOI(vp); 1089 if (vp->v_type == VNON || ((ip->i_flag & 1090 (IN_ACCESS | IN_CHANGE | IN_MODIFIED | IN_UPDATE)) == 0 && 1091 vp->v_bufobj.bo_dirty.bv_cnt == 0)) { 1092 VI_UNLOCK(vp); 1093 continue; 1094 } 1095 MNT_IUNLOCK(mp); 1096 if ((error = vget(vp, lockreq, td)) != 0) { 1097 MNT_ILOCK(mp); 1098 if (error == ENOENT) 1099 goto loop; 1100 continue; 1101 } 1102 if ((error = VOP_FSYNC(vp, cred, waitfor, td)) != 0) 1103 allerror = error; 1104 VOP_UNLOCK(vp, 0, td); 1105 vrele(vp); 1106 MNT_ILOCK(mp); 1107 } 1108 MNT_IUNLOCK(mp); 1109 /* 1110 * Force stale filesystem control information to be flushed. 1111 */ 1112 if (waitfor == MNT_WAIT) { 1113 if ((error = softdep_flushworklist(ump->um_mountp, &count, td))) 1114 allerror = error; 1115 /* Flushed work items may create new vnodes to clean */ 1116 if (allerror == 0 && count) { 1117 MNT_ILOCK(mp); 1118 goto loop; 1119 } 1120 } 1121#ifdef QUOTA 1122 qsync(mp); 1123#endif 1124 devvp = ump->um_devvp; 1125 VI_LOCK(devvp); 1126 bo = &devvp->v_bufobj; 1127 if (waitfor != MNT_LAZY && 1128 (bo->bo_numoutput > 0 || bo->bo_dirty.bv_cnt > 0)) { 1129 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY | LK_INTERLOCK, td); 1130 if ((error = VOP_FSYNC(devvp, cred, waitfor, td)) != 0) 1131 allerror = error; 1132 VOP_UNLOCK(devvp, 0, td); 1133 if (allerror == 0 && waitfor == MNT_WAIT) { 1134 MNT_ILOCK(mp); 1135 goto loop; 1136 } 1137 } else 1138 VI_UNLOCK(devvp); 1139 /* 1140 * Write back modified superblock. 1141 */ 1142 if (fs->fs_fmod != 0 && (error = ffs_sbupdate(ump, waitfor)) != 0) 1143 allerror = error; 1144 return (allerror); 1145} 1146 1147int 1148ffs_vget(mp, ino, flags, vpp) 1149 struct mount *mp; 1150 ino_t ino; 1151 int flags; 1152 struct vnode **vpp; 1153{ 1154 struct thread *td = curthread; /* XXX */ 1155 struct fs *fs; 1156 struct inode *ip; 1157 struct ufsmount *ump; 1158 struct buf *bp; 1159 struct vnode *vp; 1160 struct cdev *dev; 1161 int error; 1162 1163 ump = VFSTOUFS(mp); 1164 dev = ump->um_dev; 1165 1166 /* 1167 * We do not lock vnode creation as it is believed to be too 1168 * expensive for such rare case as simultaneous creation of vnode 1169 * for same ino by different processes. We just allow them to race 1170 * and check later to decide who wins. Let the race begin! 1171 */ 1172 if ((error = ufs_ihashget(dev, ino, flags, vpp)) != 0) 1173 return (error); 1174 if (*vpp != NULL) 1175 return (0); 1176 1177 /* 1178 * If this MALLOC() is performed after the getnewvnode() 1179 * it might block, leaving a vnode with a NULL v_data to be 1180 * found by ffs_sync() if a sync happens to fire right then, 1181 * which will cause a panic because ffs_sync() blindly 1182 * dereferences vp->v_data (as well it should). 1183 */ 1184 ip = uma_zalloc(uma_inode, M_WAITOK); 1185 1186 /* Allocate a new vnode/inode. */ 1187 error = getnewvnode("ufs", mp, &ffs_vnodeops, &vp); 1188 if (error) { 1189 *vpp = NULL; 1190 uma_zfree(uma_inode, ip); 1191 return (error); 1192 } 1193 bzero((caddr_t)ip, sizeof(struct inode)); 1194 /* 1195 * FFS supports recursive locking. 1196 */ 1197 fs = ump->um_fs; 1198 vp->v_vnlock->lk_flags |= LK_CANRECURSE; 1199 vp->v_data = ip; 1200 vp->v_bufobj.bo_bsize = fs->fs_bsize; 1201 ip->i_vnode = vp; 1202 ip->i_ump = ump; 1203 ip->i_fs = fs; 1204 ip->i_dev = dev; 1205 ip->i_number = ino; 1206#ifdef QUOTA 1207 { 1208 int i; 1209 for (i = 0; i < MAXQUOTAS; i++) 1210 ip->i_dquot[i] = NODQUOT; 1211 } 1212#endif 1213 /* 1214 * Exclusively lock the vnode before adding to hash. Note, that we 1215 * must not release nor downgrade the lock (despite flags argument 1216 * says) till it is fully initialized. 1217 */ 1218 lockmgr(vp->v_vnlock, LK_EXCLUSIVE, (struct mtx *)0, td); 1219 1220 /* 1221 * Atomicaly (in terms of ufs_hash operations) check the hash for 1222 * duplicate of vnode being created and add it to the hash. If a 1223 * duplicate vnode was found, it will be vget()ed from hash for us. 1224 */ 1225 if ((error = ufs_ihashins(ip, flags, vpp)) != 0) { 1226 vput(vp); 1227 *vpp = NULL; 1228 return (error); 1229 } 1230 1231 /* We lost the race, then throw away our vnode and return existing */ 1232 if (*vpp != NULL) { 1233 vput(vp); 1234 return (0); 1235 } 1236 1237 /* Read in the disk contents for the inode, copy into the inode. */ 1238 error = bread(ump->um_devvp, fsbtodb(fs, ino_to_fsba(fs, ino)), 1239 (int)fs->fs_bsize, NOCRED, &bp); 1240 if (error) { 1241 /* 1242 * The inode does not contain anything useful, so it would 1243 * be misleading to leave it on its hash chain. With mode 1244 * still zero, it will be unlinked and returned to the free 1245 * list by vput(). 1246 */ 1247 brelse(bp); 1248 vput(vp); 1249 *vpp = NULL; 1250 return (error); 1251 } 1252 if (ip->i_ump->um_fstype == UFS1) 1253 ip->i_din1 = uma_zalloc(uma_ufs1, M_WAITOK); 1254 else 1255 ip->i_din2 = uma_zalloc(uma_ufs2, M_WAITOK); 1256 ffs_load_inode(bp, ip, fs, ino); 1257 if (DOINGSOFTDEP(vp)) 1258 softdep_load_inodeblock(ip); 1259 else 1260 ip->i_effnlink = ip->i_nlink; 1261 bqrelse(bp); 1262 1263 /* 1264 * Initialize the vnode from the inode, check for aliases. 1265 * Note that the underlying vnode may have changed. 1266 */ 1267 error = ufs_vinit(mp, &ffs_fifoops, &vp); 1268 if (error) { 1269 vput(vp); 1270 *vpp = NULL; 1271 return (error); 1272 } 1273 /* 1274 * Finish inode initialization. 1275 */ 1276 VREF(ip->i_devvp); 1277 /* 1278 * Set up a generation number for this inode if it does not 1279 * already have one. This should only happen on old filesystems. 1280 */ 1281 if (ip->i_gen == 0) { 1282 ip->i_gen = arc4random() / 2 + 1; 1283 if ((vp->v_mount->mnt_flag & MNT_RDONLY) == 0) { 1284 ip->i_flag |= IN_MODIFIED; 1285 DIP_SET(ip, i_gen, ip->i_gen); 1286 } 1287 } 1288 /* 1289 * Ensure that uid and gid are correct. This is a temporary 1290 * fix until fsck has been changed to do the update. 1291 */ 1292 if (fs->fs_magic == FS_UFS1_MAGIC && /* XXX */ 1293 fs->fs_old_inodefmt < FS_44INODEFMT) { /* XXX */ 1294 ip->i_uid = ip->i_din1->di_ouid; /* XXX */ 1295 ip->i_gid = ip->i_din1->di_ogid; /* XXX */ 1296 } /* XXX */ 1297 1298#ifdef MAC 1299 if ((mp->mnt_flag & MNT_MULTILABEL) && ip->i_mode) { 1300 /* 1301 * If this vnode is already allocated, and we're running 1302 * multi-label, attempt to perform a label association 1303 * from the extended attributes on the inode. 1304 */ 1305 error = mac_associate_vnode_extattr(mp, vp); 1306 if (error) { 1307 /* ufs_inactive will release ip->i_devvp ref. */ 1308 vput(vp); 1309 *vpp = NULL; 1310 return (error); 1311 } 1312 } 1313#endif 1314 1315 *vpp = vp; 1316 return (0); 1317} 1318 1319/* 1320 * File handle to vnode 1321 * 1322 * Have to be really careful about stale file handles: 1323 * - check that the inode number is valid 1324 * - call ffs_vget() to get the locked inode 1325 * - check for an unallocated inode (i_mode == 0) 1326 * - check that the given client host has export rights and return 1327 * those rights via. exflagsp and credanonp 1328 */ 1329int 1330ffs_fhtovp(mp, fhp, vpp) 1331 struct mount *mp; 1332 struct fid *fhp; 1333 struct vnode **vpp; 1334{ 1335 struct ufid *ufhp; 1336 struct fs *fs; 1337 1338 ufhp = (struct ufid *)fhp; 1339 fs = VFSTOUFS(mp)->um_fs; 1340 if (ufhp->ufid_ino < ROOTINO || 1341 ufhp->ufid_ino >= fs->fs_ncg * fs->fs_ipg) 1342 return (ESTALE); 1343 return (ufs_fhtovp(mp, ufhp, vpp)); 1344} 1345 1346/* 1347 * Vnode pointer to File handle 1348 */ 1349/* ARGSUSED */ 1350int 1351ffs_vptofh(vp, fhp) 1352 struct vnode *vp; 1353 struct fid *fhp; 1354{ 1355 struct inode *ip; 1356 struct ufid *ufhp; 1357 1358 ip = VTOI(vp); 1359 ufhp = (struct ufid *)fhp; 1360 ufhp->ufid_len = sizeof(struct ufid); 1361 ufhp->ufid_ino = ip->i_number; 1362 ufhp->ufid_gen = ip->i_gen; 1363 return (0); 1364} 1365 1366/* 1367 * Initialize the filesystem. 1368 */ 1369static int 1370ffs_init(vfsp) 1371 struct vfsconf *vfsp; 1372{ 1373 1374 softdep_initialize(); 1375 return (ufs_init(vfsp)); 1376} 1377 1378/* 1379 * Undo the work of ffs_init(). 1380 */ 1381static int 1382ffs_uninit(vfsp) 1383 struct vfsconf *vfsp; 1384{ 1385 int ret; 1386 1387 ret = ufs_uninit(vfsp); 1388 softdep_uninitialize(); 1389 return (ret); 1390} 1391 1392/* 1393 * Write a superblock and associated information back to disk. 1394 */ 1395static int 1396ffs_sbupdate(mp, waitfor) 1397 struct ufsmount *mp; 1398 int waitfor; 1399{ 1400 struct fs *fs = mp->um_fs; 1401 struct buf *bp; 1402 int blks; 1403 void *space; 1404 int i, size, error, allerror = 0; 1405 1406 if (fs->fs_ronly == 1 && 1407 (mp->um_mountp->mnt_flag & (MNT_RDONLY | MNT_UPDATE)) != 1408 (MNT_RDONLY | MNT_UPDATE)) 1409 panic("ffs_sbupdate: write read-only filesystem"); 1410 /* 1411 * First write back the summary information. 1412 */ 1413 blks = howmany(fs->fs_cssize, fs->fs_fsize); 1414 space = fs->fs_csp; 1415 for (i = 0; i < blks; i += fs->fs_frag) { 1416 size = fs->fs_bsize; 1417 if (i + fs->fs_frag > blks) 1418 size = (blks - i) * fs->fs_fsize; 1419 bp = getblk(mp->um_devvp, fsbtodb(fs, fs->fs_csaddr + i), 1420 size, 0, 0, 0); 1421 bcopy(space, bp->b_data, (u_int)size); 1422 space = (char *)space + size; 1423 if (waitfor != MNT_WAIT) 1424 bawrite(bp); 1425 else if ((error = bwrite(bp)) != 0) 1426 allerror = error; 1427 } 1428 /* 1429 * Now write back the superblock itself. If any errors occurred 1430 * up to this point, then fail so that the superblock avoids 1431 * being written out as clean. 1432 */ 1433 if (allerror) 1434 return (allerror); 1435 if (fs->fs_magic == FS_UFS1_MAGIC && fs->fs_sblockloc != SBLOCK_UFS1 && 1436 (fs->fs_flags & FS_FLAGS_UPDATED) == 0) { 1437 printf("%s: correcting fs_sblockloc from %jd to %d\n", 1438 fs->fs_fsmnt, fs->fs_sblockloc, SBLOCK_UFS1); 1439 fs->fs_sblockloc = SBLOCK_UFS1; 1440 } 1441 if (fs->fs_magic == FS_UFS2_MAGIC && fs->fs_sblockloc != SBLOCK_UFS2 && 1442 (fs->fs_flags & FS_FLAGS_UPDATED) == 0) { 1443 printf("%s: correcting fs_sblockloc from %jd to %d\n", 1444 fs->fs_fsmnt, fs->fs_sblockloc, SBLOCK_UFS2); 1445 fs->fs_sblockloc = SBLOCK_UFS2; 1446 } 1447 bp = getblk(mp->um_devvp, btodb(fs->fs_sblockloc), (int)fs->fs_sbsize, 1448 0, 0, 0); 1449 fs->fs_fmod = 0; 1450 fs->fs_time = time_second; 1451 bcopy((caddr_t)fs, bp->b_data, (u_int)fs->fs_sbsize); 1452 ffs_oldfscompat_write((struct fs *)bp->b_data, mp); 1453 if (waitfor != MNT_WAIT) 1454 bawrite(bp); 1455 else if ((error = bwrite(bp)) != 0) 1456 allerror = error; 1457 return (allerror); 1458} 1459 1460static int 1461ffs_extattrctl(struct mount *mp, int cmd, struct vnode *filename_vp, 1462 int attrnamespace, const char *attrname, struct thread *td) 1463{ 1464 1465#ifdef UFS_EXTATTR 1466 return (ufs_extattrctl(mp, cmd, filename_vp, attrnamespace, 1467 attrname, td)); 1468#else 1469 return (vfs_stdextattrctl(mp, cmd, filename_vp, attrnamespace, 1470 attrname, td)); 1471#endif 1472} 1473 1474static void 1475ffs_ifree(struct ufsmount *ump, struct inode *ip) 1476{ 1477 1478 if (ump->um_fstype == UFS1 && ip->i_din1 != NULL) 1479 uma_zfree(uma_ufs1, ip->i_din1); 1480 else if (ip->i_din2 != NULL) 1481 uma_zfree(uma_ufs2, ip->i_din2); 1482 uma_zfree(uma_inode, ip); 1483} 1484 1485static void 1486ffs_geom_strategy(struct bufobj *bo, struct buf *bp) 1487{ 1488 1489#ifdef SOFTUPDATES 1490 if (bp->b_iocmd == BIO_WRITE && softdep_disk_prewrite(bp)) 1491 return; 1492#endif 1493 g_vfs_strategy(bo, bp); 1494} 1495