1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 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. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #include "opt_quota.h" 34 #include "opt_ufs.h" 35 #include "opt_ffs.h" 36 #include "opt_ddb.h" 37 38 #include <sys/param.h> 39 #include <sys/gsb_crc32.h> 40 #include <sys/systm.h> 41 #include <sys/namei.h> 42 #include <sys/priv.h> 43 #include <sys/proc.h> 44 #include <sys/taskqueue.h> 45 #include <sys/kernel.h> 46 #include <sys/ktr.h> 47 #include <sys/vnode.h> 48 #include <sys/mount.h> 49 #include <sys/bio.h> 50 #include <sys/buf.h> 51 #include <sys/conf.h> 52 #include <sys/fcntl.h> 53 #include <sys/ioccom.h> 54 #include <sys/malloc.h> 55 #include <sys/mutex.h> 56 #include <sys/rwlock.h> 57 #include <sys/sysctl.h> 58 #include <sys/vmmeter.h> 59 60 #include <security/mac/mac_framework.h> 61 62 #include <ufs/ufs/dir.h> 63 #include <ufs/ufs/extattr.h> 64 #include <ufs/ufs/gjournal.h> 65 #include <ufs/ufs/quota.h> 66 #include <ufs/ufs/ufsmount.h> 67 #include <ufs/ufs/inode.h> 68 #include <ufs/ufs/ufs_extern.h> 69 70 #include <ufs/ffs/fs.h> 71 #include <ufs/ffs/ffs_extern.h> 72 73 #include <vm/vm.h> 74 #include <vm/uma.h> 75 #include <vm/vm_page.h> 76 77 #include <geom/geom.h> 78 #include <geom/geom_vfs.h> 79 80 #include <ddb/ddb.h> 81 82 static uma_zone_t uma_inode, uma_ufs1, uma_ufs2; 83 VFS_SMR_DECLARE; 84 85 static int ffs_mountfs(struct vnode *, struct mount *, struct thread *); 86 static void ffs_ifree(struct ufsmount *ump, struct inode *ip); 87 static int ffs_sync_lazy(struct mount *mp); 88 static int ffs_use_bread(void *devfd, off_t loc, void **bufp, int size); 89 static int ffs_use_bwrite(void *devfd, off_t loc, void *buf, int size); 90 91 static vfs_init_t ffs_init; 92 static vfs_uninit_t ffs_uninit; 93 static vfs_extattrctl_t ffs_extattrctl; 94 static vfs_cmount_t ffs_cmount; 95 static vfs_unmount_t ffs_unmount; 96 static vfs_mount_t ffs_mount; 97 static vfs_statfs_t ffs_statfs; 98 static vfs_fhtovp_t ffs_fhtovp; 99 static vfs_sync_t ffs_sync; 100 101 static struct vfsops ufs_vfsops = { 102 .vfs_extattrctl = ffs_extattrctl, 103 .vfs_fhtovp = ffs_fhtovp, 104 .vfs_init = ffs_init, 105 .vfs_mount = ffs_mount, 106 .vfs_cmount = ffs_cmount, 107 .vfs_quotactl = ufs_quotactl, 108 .vfs_root = vfs_cache_root, 109 .vfs_cachedroot = ufs_root, 110 .vfs_statfs = ffs_statfs, 111 .vfs_sync = ffs_sync, 112 .vfs_uninit = ffs_uninit, 113 .vfs_unmount = ffs_unmount, 114 .vfs_vget = ffs_vget, 115 .vfs_susp_clean = process_deferred_inactive, 116 }; 117 118 VFS_SET(ufs_vfsops, ufs, VFCF_FILEREVINC); 119 MODULE_VERSION(ufs, 1); 120 121 static b_strategy_t ffs_geom_strategy; 122 static b_write_t ffs_bufwrite; 123 124 static struct buf_ops ffs_ops = { 125 .bop_name = "FFS", 126 .bop_write = ffs_bufwrite, 127 .bop_strategy = ffs_geom_strategy, 128 .bop_sync = bufsync, 129 #ifdef NO_FFS_SNAPSHOT 130 .bop_bdflush = bufbdflush, 131 #else 132 .bop_bdflush = ffs_bdflush, 133 #endif 134 }; 135 136 /* 137 * Note that userquota and groupquota options are not currently used 138 * by UFS/FFS code and generally mount(8) does not pass those options 139 * from userland, but they can be passed by loader(8) via 140 * vfs.root.mountfrom.options. 141 */ 142 static const char *ffs_opts[] = { "acls", "async", "noatime", "noclusterr", 143 "noclusterw", "noexec", "export", "force", "from", "groupquota", 144 "multilabel", "nfsv4acls", "snapshot", "nosuid", "suiddir", 145 "nosymfollow", "sync", "union", "userquota", "untrusted", NULL }; 146 147 static int ffs_enxio_enable = 1; 148 SYSCTL_DECL(_vfs_ffs); 149 SYSCTL_INT(_vfs_ffs, OID_AUTO, enxio_enable, CTLFLAG_RWTUN, 150 &ffs_enxio_enable, 0, 151 "enable mapping of other disk I/O errors to ENXIO"); 152 153 /* 154 * Return buffer with the contents of block "offset" from the beginning of 155 * directory "ip". If "res" is non-zero, fill it in with a pointer to the 156 * remaining space in the directory. 157 */ 158 static int 159 ffs_blkatoff(struct vnode *vp, off_t offset, char **res, struct buf **bpp) 160 { 161 struct inode *ip; 162 struct fs *fs; 163 struct buf *bp; 164 ufs_lbn_t lbn; 165 int bsize, error; 166 167 ip = VTOI(vp); 168 fs = ITOFS(ip); 169 lbn = lblkno(fs, offset); 170 bsize = blksize(fs, ip, lbn); 171 172 *bpp = NULL; 173 error = bread(vp, lbn, bsize, NOCRED, &bp); 174 if (error) { 175 return (error); 176 } 177 if (res) 178 *res = (char *)bp->b_data + blkoff(fs, offset); 179 *bpp = bp; 180 return (0); 181 } 182 183 /* 184 * Load up the contents of an inode and copy the appropriate pieces 185 * to the incore copy. 186 */ 187 static int 188 ffs_load_inode(struct buf *bp, struct inode *ip, struct fs *fs, ino_t ino) 189 { 190 struct ufs1_dinode *dip1; 191 struct ufs2_dinode *dip2; 192 int error; 193 194 if (I_IS_UFS1(ip)) { 195 dip1 = ip->i_din1; 196 *dip1 = 197 *((struct ufs1_dinode *)bp->b_data + ino_to_fsbo(fs, ino)); 198 ip->i_mode = dip1->di_mode; 199 ip->i_nlink = dip1->di_nlink; 200 ip->i_effnlink = dip1->di_nlink; 201 ip->i_size = dip1->di_size; 202 ip->i_flags = dip1->di_flags; 203 ip->i_gen = dip1->di_gen; 204 ip->i_uid = dip1->di_uid; 205 ip->i_gid = dip1->di_gid; 206 if (ffs_oldfscompat_inode_read(fs, ip->i_dp, time_second) && 207 fs->fs_ronly == 0) 208 UFS_INODE_SET_FLAG(ip, IN_MODIFIED); 209 return (0); 210 } 211 dip2 = ((struct ufs2_dinode *)bp->b_data + ino_to_fsbo(fs, ino)); 212 if ((error = ffs_verify_dinode_ckhash(fs, dip2)) != 0 && 213 !ffs_fsfail_cleanup(ITOUMP(ip), error)) { 214 printf("%s: inode %jd: check-hash failed\n", fs->fs_fsmnt, 215 (intmax_t)ino); 216 return (error); 217 } 218 *ip->i_din2 = *dip2; 219 dip2 = ip->i_din2; 220 ip->i_mode = dip2->di_mode; 221 ip->i_nlink = dip2->di_nlink; 222 ip->i_effnlink = dip2->di_nlink; 223 ip->i_size = dip2->di_size; 224 ip->i_flags = dip2->di_flags; 225 ip->i_gen = dip2->di_gen; 226 ip->i_uid = dip2->di_uid; 227 ip->i_gid = dip2->di_gid; 228 if (ffs_oldfscompat_inode_read(fs, ip->i_dp, time_second) && 229 fs->fs_ronly == 0) 230 UFS_INODE_SET_FLAG(ip, IN_MODIFIED); 231 return (0); 232 } 233 234 /* 235 * Verify that a filesystem block number is a valid data block. 236 * This routine is only called on untrusted filesystems. 237 */ 238 static int 239 ffs_check_blkno(struct mount *mp, ino_t inum, ufs2_daddr_t daddr, int blksize) 240 { 241 struct fs *fs; 242 struct ufsmount *ump; 243 ufs2_daddr_t end_daddr; 244 int cg, havemtx; 245 246 KASSERT((mp->mnt_flag & MNT_UNTRUSTED) != 0, 247 ("ffs_check_blkno called on a trusted file system")); 248 ump = VFSTOUFS(mp); 249 fs = ump->um_fs; 250 cg = dtog(fs, daddr); 251 end_daddr = daddr + numfrags(fs, blksize); 252 /* 253 * Verify that the block number is a valid data block. Also check 254 * that it does not point to an inode block or a superblock. Accept 255 * blocks that are unalloacted (0) or part of snapshot metadata 256 * (BLK_NOCOPY or BLK_SNAP). 257 * 258 * Thus, the block must be in a valid range for the filesystem and 259 * either in the space before a backup superblock (except the first 260 * cylinder group where that space is used by the bootstrap code) or 261 * after the inode blocks and before the end of the cylinder group. 262 */ 263 if ((uint64_t)daddr <= BLK_SNAP || 264 ((uint64_t)end_daddr <= fs->fs_size && 265 ((cg > 0 && end_daddr <= cgsblock(fs, cg)) || 266 (daddr >= cgdmin(fs, cg) && 267 end_daddr <= cgbase(fs, cg) + fs->fs_fpg)))) 268 return (0); 269 if ((havemtx = mtx_owned(UFS_MTX(ump))) == 0) 270 UFS_LOCK(ump); 271 if (ppsratecheck(&ump->um_last_integritymsg, 272 &ump->um_secs_integritymsg, 1)) { 273 UFS_UNLOCK(ump); 274 uprintf("\n%s: inode %jd, out-of-range indirect block " 275 "number %jd\n", mp->mnt_stat.f_mntonname, inum, daddr); 276 if (havemtx) 277 UFS_LOCK(ump); 278 } else if (!havemtx) 279 UFS_UNLOCK(ump); 280 return (EINTEGRITY); 281 } 282 283 /* 284 * On first ENXIO error, initiate an asynchronous forcible unmount. 285 * Used to unmount filesystems whose underlying media has gone away. 286 * 287 * Return true if a cleanup is in progress. 288 */ 289 int 290 ffs_fsfail_cleanup(struct ufsmount *ump, int error) 291 { 292 int retval; 293 294 UFS_LOCK(ump); 295 retval = ffs_fsfail_cleanup_locked(ump, error); 296 UFS_UNLOCK(ump); 297 return (retval); 298 } 299 300 int 301 ffs_fsfail_cleanup_locked(struct ufsmount *ump, int error) 302 { 303 mtx_assert(UFS_MTX(ump), MA_OWNED); 304 if (error == ENXIO && (ump->um_flags & UM_FSFAIL_CLEANUP) == 0) { 305 ump->um_flags |= UM_FSFAIL_CLEANUP; 306 if (ump->um_mountp == rootvnode->v_mount) 307 panic("UFS: root fs would be forcibly unmounted"); 308 309 /* 310 * Queue an async forced unmount. 311 */ 312 vfs_ref(ump->um_mountp); 313 dounmount(ump->um_mountp, 314 MNT_FORCE | MNT_RECURSE | MNT_DEFERRED, curthread); 315 printf("UFS: forcibly unmounting %s from %s\n", 316 ump->um_mountp->mnt_stat.f_mntfromname, 317 ump->um_mountp->mnt_stat.f_mntonname); 318 } 319 return ((ump->um_flags & UM_FSFAIL_CLEANUP) != 0); 320 } 321 322 /* 323 * Wrapper used during ENXIO cleanup to allocate empty buffers when 324 * the kernel is unable to read the real one. They are needed so that 325 * the soft updates code can use them to unwind its dependencies. 326 */ 327 int 328 ffs_breadz(struct ufsmount *ump, struct vnode *vp, daddr_t lblkno, 329 daddr_t dblkno, int size, daddr_t *rablkno, int *rabsize, int cnt, 330 struct ucred *cred, int flags, void (*ckhashfunc)(struct buf *), 331 struct buf **bpp) 332 { 333 int error; 334 335 flags |= GB_CVTENXIO; 336 error = breadn_flags(vp, lblkno, dblkno, size, rablkno, rabsize, cnt, 337 cred, flags, ckhashfunc, bpp); 338 if (error != 0 && ffs_fsfail_cleanup(ump, error)) { 339 error = getblkx(vp, lblkno, dblkno, size, 0, 0, flags, bpp); 340 KASSERT(error == 0, ("getblkx failed")); 341 vfs_bio_bzero_buf(*bpp, 0, size); 342 } 343 return (error); 344 } 345 346 static int 347 ffs_mount(struct mount *mp) 348 { 349 struct vnode *devvp, *odevvp; 350 struct thread *td; 351 struct ufsmount *ump = NULL; 352 struct fs *fs; 353 int error, flags; 354 int error1 __diagused; 355 uint64_t mntorflags, saved_mnt_flag; 356 accmode_t accmode; 357 struct nameidata ndp; 358 char *fspec; 359 bool mounted_softdep; 360 361 td = curthread; 362 if (vfs_filteropt(mp->mnt_optnew, ffs_opts)) 363 return (EINVAL); 364 if (uma_inode == NULL) { 365 uma_inode = uma_zcreate("FFS inode", 366 sizeof(struct inode), NULL, NULL, NULL, NULL, 367 UMA_ALIGN_PTR, 0); 368 uma_ufs1 = uma_zcreate("FFS1 dinode", 369 sizeof(struct ufs1_dinode), NULL, NULL, NULL, NULL, 370 UMA_ALIGN_PTR, 0); 371 uma_ufs2 = uma_zcreate("FFS2 dinode", 372 sizeof(struct ufs2_dinode), NULL, NULL, NULL, NULL, 373 UMA_ALIGN_PTR, 0); 374 VFS_SMR_ZONE_SET(uma_inode); 375 } 376 377 vfs_deleteopt(mp->mnt_optnew, "groupquota"); 378 vfs_deleteopt(mp->mnt_optnew, "userquota"); 379 380 fspec = vfs_getopts(mp->mnt_optnew, "from", &error); 381 if (error) 382 return (error); 383 384 mntorflags = 0; 385 if (vfs_getopt(mp->mnt_optnew, "untrusted", NULL, NULL) == 0) 386 mntorflags |= MNT_UNTRUSTED; 387 388 if (vfs_getopt(mp->mnt_optnew, "acls", NULL, NULL) == 0) 389 mntorflags |= MNT_ACLS; 390 391 if (vfs_getopt(mp->mnt_optnew, "snapshot", NULL, NULL) == 0) { 392 mntorflags |= MNT_SNAPSHOT; 393 /* 394 * Once we have set the MNT_SNAPSHOT flag, do not 395 * persist "snapshot" in the options list. 396 */ 397 vfs_deleteopt(mp->mnt_optnew, "snapshot"); 398 vfs_deleteopt(mp->mnt_opt, "snapshot"); 399 } 400 401 if (vfs_getopt(mp->mnt_optnew, "nfsv4acls", NULL, NULL) == 0) { 402 if (mntorflags & MNT_ACLS) { 403 vfs_mount_error(mp, 404 "\"acls\" and \"nfsv4acls\" options " 405 "are mutually exclusive"); 406 return (EINVAL); 407 } 408 mntorflags |= MNT_NFS4ACLS; 409 } 410 411 MNT_ILOCK(mp); 412 mp->mnt_kern_flag &= ~MNTK_FPLOOKUP; 413 mp->mnt_flag |= mntorflags; 414 MNT_IUNLOCK(mp); 415 416 /* 417 * If this is a snapshot request, take the snapshot. 418 */ 419 if (mp->mnt_flag & MNT_SNAPSHOT) { 420 if ((mp->mnt_flag & MNT_UPDATE) == 0) 421 return (EINVAL); 422 return (ffs_snapshot(mp, fspec)); 423 } 424 425 /* 426 * Must not call namei() while owning busy ref. 427 */ 428 if (mp->mnt_flag & MNT_UPDATE) 429 vfs_unbusy(mp); 430 431 /* 432 * Not an update, or updating the name: look up the name 433 * and verify that it refers to a sensible disk device. 434 */ 435 NDINIT(&ndp, LOOKUP, FOLLOW | LOCKLEAF, UIO_SYSSPACE, fspec); 436 error = namei(&ndp); 437 if ((mp->mnt_flag & MNT_UPDATE) != 0) { 438 /* 439 * Unmount does not start if MNT_UPDATE is set. Mount 440 * update busies mp before setting MNT_UPDATE. We 441 * must be able to retain our busy ref successfully, 442 * without sleep. 443 */ 444 error1 = vfs_busy(mp, MBF_NOWAIT); 445 MPASS(error1 == 0); 446 } 447 if (error != 0) 448 return (error); 449 NDFREE_PNBUF(&ndp); 450 if (!vn_isdisk_error(ndp.ni_vp, &error)) { 451 vput(ndp.ni_vp); 452 return (error); 453 } 454 455 /* 456 * If mount by non-root, then verify that user has necessary 457 * permissions on the device. 458 */ 459 accmode = VREAD; 460 if ((mp->mnt_flag & MNT_RDONLY) == 0) 461 accmode |= VWRITE; 462 error = VOP_ACCESS(ndp.ni_vp, accmode, td->td_ucred, td); 463 if (error) 464 error = priv_check(td, PRIV_VFS_MOUNT_PERM); 465 if (error) { 466 vput(ndp.ni_vp); 467 return (error); 468 } 469 470 /* 471 * New mount 472 * 473 * We need the name for the mount point (also used for 474 * "last mounted on") copied in. If an error occurs, 475 * the mount point is discarded by the upper level code. 476 * Note that vfs_mount_alloc() populates f_mntonname for us. 477 */ 478 if ((mp->mnt_flag & MNT_UPDATE) == 0) { 479 if ((error = ffs_mountfs(ndp.ni_vp, mp, td)) != 0) { 480 vrele(ndp.ni_vp); 481 return (error); 482 } 483 } else { 484 /* 485 * When updating, check whether changing from read-only to 486 * read/write; if there is no device name, that's all we do. 487 */ 488 ump = VFSTOUFS(mp); 489 fs = ump->um_fs; 490 odevvp = ump->um_odevvp; 491 devvp = ump->um_devvp; 492 493 /* 494 * If it's not the same vnode, or at least the same device 495 * then it's not correct. 496 */ 497 if (ndp.ni_vp->v_rdev != ump->um_odevvp->v_rdev) 498 error = EINVAL; /* needs translation */ 499 vput(ndp.ni_vp); 500 if (error) 501 return (error); 502 if (fs->fs_ronly == 0 && 503 vfs_flagopt(mp->mnt_optnew, "ro", NULL, 0)) { 504 /* 505 * Flush any dirty data and suspend filesystem. 506 */ 507 if ((error = vn_start_write(NULL, &mp, V_WAIT)) != 0) 508 return (error); 509 error = vfs_write_suspend_umnt(mp); 510 if (error != 0) 511 return (error); 512 513 fs->fs_ronly = 1; 514 if (MOUNTEDSOFTDEP(mp)) { 515 MNT_ILOCK(mp); 516 mp->mnt_flag &= ~MNT_SOFTDEP; 517 MNT_IUNLOCK(mp); 518 mounted_softdep = true; 519 } else 520 mounted_softdep = false; 521 522 /* 523 * Check for and optionally get rid of files open 524 * for writing. 525 */ 526 flags = WRITECLOSE; 527 if (mp->mnt_flag & MNT_FORCE) 528 flags |= FORCECLOSE; 529 if (mounted_softdep) { 530 error = softdep_flushfiles(mp, flags, td); 531 } else { 532 error = ffs_flushfiles(mp, flags, td); 533 } 534 if (error) { 535 fs->fs_ronly = 0; 536 if (mounted_softdep) { 537 MNT_ILOCK(mp); 538 mp->mnt_flag |= MNT_SOFTDEP; 539 MNT_IUNLOCK(mp); 540 } 541 vfs_write_resume(mp, 0); 542 return (error); 543 } 544 545 if (fs->fs_pendingblocks != 0 || 546 fs->fs_pendinginodes != 0) { 547 printf("WARNING: %s Update error: blocks %jd " 548 "files %d\n", fs->fs_fsmnt, 549 (intmax_t)fs->fs_pendingblocks, 550 fs->fs_pendinginodes); 551 fs->fs_pendingblocks = 0; 552 fs->fs_pendinginodes = 0; 553 } 554 if ((fs->fs_flags & (FS_UNCLEAN | FS_NEEDSFSCK)) == 0) 555 fs->fs_clean = 1; 556 if ((error = ffs_sbupdate(ump, MNT_WAIT, 0)) != 0) { 557 fs->fs_ronly = 0; 558 fs->fs_clean = 0; 559 if (mounted_softdep) { 560 MNT_ILOCK(mp); 561 mp->mnt_flag |= MNT_SOFTDEP; 562 MNT_IUNLOCK(mp); 563 } 564 vfs_write_resume(mp, 0); 565 return (error); 566 } 567 if (mounted_softdep) 568 softdep_unmount(mp); 569 g_topology_lock(); 570 /* 571 * Drop our write and exclusive access. 572 */ 573 g_access(ump->um_cp, 0, -1, -1); 574 g_topology_unlock(); 575 MNT_ILOCK(mp); 576 mp->mnt_flag |= MNT_RDONLY; 577 MNT_IUNLOCK(mp); 578 /* 579 * Allow the writers to note that filesystem 580 * is ro now. 581 */ 582 vfs_write_resume(mp, 0); 583 } 584 if ((mp->mnt_flag & MNT_RELOAD) && 585 (error = ffs_reload(mp, 0)) != 0) { 586 return (error); 587 } else { 588 /* ffs_reload replaces the superblock structure */ 589 fs = ump->um_fs; 590 } 591 if (fs->fs_ronly && 592 !vfs_flagopt(mp->mnt_optnew, "ro", NULL, 0)) { 593 /* 594 * If upgrade to read-write by non-root, then verify 595 * that user has necessary permissions on the device. 596 */ 597 vn_lock(odevvp, LK_EXCLUSIVE | LK_RETRY); 598 error = VOP_ACCESS(odevvp, VREAD | VWRITE, 599 td->td_ucred, td); 600 if (error) 601 error = priv_check(td, PRIV_VFS_MOUNT_PERM); 602 VOP_UNLOCK(odevvp); 603 if (error) { 604 return (error); 605 } 606 fs->fs_flags &= ~FS_UNCLEAN; 607 if (fs->fs_clean == 0) { 608 fs->fs_flags |= FS_UNCLEAN; 609 if ((mp->mnt_flag & MNT_FORCE) || 610 ((fs->fs_flags & 611 (FS_SUJ | FS_NEEDSFSCK)) == 0 && 612 (fs->fs_flags & FS_DOSOFTDEP))) { 613 printf("WARNING: %s was not properly " 614 "dismounted\n", 615 mp->mnt_stat.f_mntonname); 616 } else { 617 vfs_mount_error(mp, 618 "R/W mount of %s denied. %s.%s", 619 mp->mnt_stat.f_mntonname, 620 "Filesystem is not clean - run fsck", 621 (fs->fs_flags & FS_SUJ) == 0 ? "" : 622 " Forced mount will invalidate" 623 " journal contents"); 624 return (EPERM); 625 } 626 } 627 g_topology_lock(); 628 /* 629 * Request exclusive write access. 630 */ 631 error = g_access(ump->um_cp, 0, 1, 1); 632 g_topology_unlock(); 633 if (error) 634 return (error); 635 if ((error = vn_start_write(NULL, &mp, V_WAIT)) != 0) 636 return (error); 637 error = vfs_write_suspend_umnt(mp); 638 if (error != 0) 639 return (error); 640 fs->fs_ronly = 0; 641 MNT_ILOCK(mp); 642 saved_mnt_flag = MNT_RDONLY; 643 if (MOUNTEDSOFTDEP(mp) && (mp->mnt_flag & 644 MNT_ASYNC) != 0) 645 saved_mnt_flag |= MNT_ASYNC; 646 mp->mnt_flag &= ~saved_mnt_flag; 647 MNT_IUNLOCK(mp); 648 fs->fs_mtime = time_second; 649 /* check to see if we need to start softdep */ 650 if ((fs->fs_flags & FS_DOSOFTDEP) && 651 (error = softdep_mount(devvp, mp, fs, td->td_ucred))){ 652 fs->fs_ronly = 1; 653 MNT_ILOCK(mp); 654 mp->mnt_flag |= saved_mnt_flag; 655 MNT_IUNLOCK(mp); 656 vfs_write_resume(mp, 0); 657 return (error); 658 } 659 fs->fs_clean = 0; 660 if ((error = ffs_sbupdate(ump, MNT_WAIT, 0)) != 0) { 661 fs->fs_ronly = 1; 662 if ((fs->fs_flags & FS_DOSOFTDEP) != 0) 663 softdep_unmount(mp); 664 MNT_ILOCK(mp); 665 mp->mnt_flag |= saved_mnt_flag; 666 MNT_IUNLOCK(mp); 667 vfs_write_resume(mp, 0); 668 return (error); 669 } 670 if (fs->fs_snapinum[0] != 0) 671 ffs_snapshot_mount(mp); 672 vfs_write_resume(mp, 0); 673 } 674 /* 675 * Soft updates is incompatible with "async", 676 * so if we are doing softupdates stop the user 677 * from setting the async flag in an update. 678 * Softdep_mount() clears it in an initial mount 679 * or ro->rw remount. 680 */ 681 if (MOUNTEDSOFTDEP(mp)) { 682 /* XXX: Reset too late ? */ 683 MNT_ILOCK(mp); 684 mp->mnt_flag &= ~MNT_ASYNC; 685 MNT_IUNLOCK(mp); 686 } 687 /* 688 * Keep MNT_ACLS flag if it is stored in superblock. 689 */ 690 if ((fs->fs_flags & FS_ACLS) != 0) { 691 /* XXX: Set too late ? */ 692 MNT_ILOCK(mp); 693 mp->mnt_flag |= MNT_ACLS; 694 MNT_IUNLOCK(mp); 695 } 696 697 if ((fs->fs_flags & FS_NFS4ACLS) != 0) { 698 /* XXX: Set too late ? */ 699 MNT_ILOCK(mp); 700 mp->mnt_flag |= MNT_NFS4ACLS; 701 MNT_IUNLOCK(mp); 702 } 703 704 } 705 706 MNT_ILOCK(mp); 707 /* 708 * This is racy versus lookup, see ufs_fplookup_vexec for details. 709 */ 710 if ((mp->mnt_kern_flag & MNTK_FPLOOKUP) != 0) 711 panic("MNTK_FPLOOKUP set on mount %p when it should not be", mp); 712 if ((mp->mnt_flag & (MNT_ACLS | MNT_NFS4ACLS | MNT_UNION)) == 0) 713 mp->mnt_kern_flag |= MNTK_FPLOOKUP; 714 MNT_IUNLOCK(mp); 715 716 vfs_mountedfrom(mp, fspec); 717 return (0); 718 } 719 720 /* 721 * Compatibility with old mount system call. 722 */ 723 724 static int 725 ffs_cmount(struct mntarg *ma, void *data, uint64_t flags) 726 { 727 struct ufs_args args; 728 int error; 729 730 if (data == NULL) 731 return (EINVAL); 732 error = copyin(data, &args, sizeof args); 733 if (error) 734 return (error); 735 736 ma = mount_argsu(ma, "from", args.fspec, MAXPATHLEN); 737 ma = mount_arg(ma, "export", &args.export, sizeof(args.export)); 738 error = kernel_mount(ma, flags); 739 740 return (error); 741 } 742 743 /* 744 * Reload all incore data for a filesystem (used after running fsck on 745 * the root filesystem and finding things to fix). If the 'force' flag 746 * is 0, the filesystem must be mounted read-only. 747 * 748 * Things to do to update the mount: 749 * 1) invalidate all cached meta-data. 750 * 2) re-read superblock from disk. 751 * 3) If requested, clear MNTK_SUSPEND2 and MNTK_SUSPENDED flags 752 * to allow secondary writers. 753 * 4) invalidate all cached file data. 754 * 5) re-read inode data for all active vnodes. 755 */ 756 int 757 ffs_reload(struct mount *mp, int flags) 758 { 759 struct vnode *vp, *mvp, *devvp; 760 struct inode *ip; 761 struct buf *bp; 762 struct fs *fs, *newfs; 763 struct ufsmount *ump; 764 int error; 765 766 ump = VFSTOUFS(mp); 767 768 MNT_ILOCK(mp); 769 if ((mp->mnt_flag & MNT_RDONLY) == 0 && (flags & FFSR_FORCE) == 0) { 770 MNT_IUNLOCK(mp); 771 return (EINVAL); 772 } 773 MNT_IUNLOCK(mp); 774 775 /* 776 * Step 1: invalidate all cached meta-data. 777 */ 778 devvp = VFSTOUFS(mp)->um_devvp; 779 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 780 if (vinvalbuf(devvp, 0, 0, 0) != 0) 781 panic("ffs_reload: dirty1"); 782 VOP_UNLOCK(devvp); 783 784 /* 785 * Step 2: re-read superblock from disk. 786 */ 787 if ((error = ffs_sbget(devvp, &newfs, UFS_STDSB, 0, M_UFSMNT, 788 ffs_use_bread)) != 0) 789 return (error); 790 /* 791 * Replace our superblock with the new superblock. Preserve 792 * our read-only status. 793 */ 794 fs = VFSTOUFS(mp)->um_fs; 795 newfs->fs_ronly = fs->fs_ronly; 796 free(fs->fs_csp, M_UFSMNT); 797 free(fs->fs_si, M_UFSMNT); 798 free(fs, M_UFSMNT); 799 fs = VFSTOUFS(mp)->um_fs = newfs; 800 ump->um_bsize = fs->fs_bsize; 801 ump->um_maxsymlinklen = fs->fs_maxsymlinklen; 802 UFS_LOCK(ump); 803 if (fs->fs_pendingblocks != 0 || fs->fs_pendinginodes != 0) { 804 printf("WARNING: %s: reload pending error: blocks %jd " 805 "files %d\n", mp->mnt_stat.f_mntonname, 806 (intmax_t)fs->fs_pendingblocks, fs->fs_pendinginodes); 807 fs->fs_pendingblocks = 0; 808 fs->fs_pendinginodes = 0; 809 } 810 UFS_UNLOCK(ump); 811 /* 812 * Step 3: If requested, clear MNTK_SUSPEND2 and MNTK_SUSPENDED flags 813 * to allow secondary writers. 814 */ 815 if ((flags & FFSR_UNSUSPEND) != 0) { 816 MNT_ILOCK(mp); 817 mp->mnt_kern_flag &= ~(MNTK_SUSPENDED | MNTK_SUSPEND2); 818 wakeup(&mp->mnt_flag); 819 MNT_IUNLOCK(mp); 820 } 821 822 loop: 823 MNT_VNODE_FOREACH_ALL(vp, mp, mvp) { 824 /* 825 * Skip syncer vnode. 826 */ 827 if (vp->v_type == VNON) { 828 VI_UNLOCK(vp); 829 continue; 830 } 831 /* 832 * Step 4: invalidate all cached file data. 833 */ 834 if (vget(vp, LK_EXCLUSIVE | LK_INTERLOCK)) { 835 MNT_VNODE_FOREACH_ALL_ABORT(mp, mvp); 836 goto loop; 837 } 838 if (vinvalbuf(vp, 0, 0, 0)) 839 panic("ffs_reload: dirty2"); 840 /* 841 * Step 5: re-read inode data for all active vnodes. 842 */ 843 ip = VTOI(vp); 844 error = 845 bread(devvp, fsbtodb(fs, ino_to_fsba(fs, ip->i_number)), 846 (int)fs->fs_bsize, NOCRED, &bp); 847 if (error) { 848 vput(vp); 849 MNT_VNODE_FOREACH_ALL_ABORT(mp, mvp); 850 return (error); 851 } 852 if ((error = ffs_load_inode(bp, ip, fs, ip->i_number)) != 0) { 853 brelse(bp); 854 vput(vp); 855 MNT_VNODE_FOREACH_ALL_ABORT(mp, mvp); 856 return (error); 857 } 858 ip->i_effnlink = ip->i_nlink; 859 brelse(bp); 860 vput(vp); 861 } 862 return (0); 863 } 864 865 /* 866 * Common code for mount and mountroot 867 */ 868 static int 869 ffs_mountfs(struct vnode *odevvp, struct mount *mp, struct thread *td) 870 { 871 struct ufsmount *ump; 872 struct fs *fs; 873 struct cdev *dev; 874 int error, i, len, ronly; 875 struct ucred *cred; 876 struct g_consumer *cp; 877 struct mount *nmp; 878 struct vnode *devvp; 879 int candelete, canspeedup; 880 881 fs = NULL; 882 ump = NULL; 883 cred = td ? td->td_ucred : NOCRED; 884 ronly = (mp->mnt_flag & MNT_RDONLY) != 0; 885 886 devvp = mntfs_allocvp(mp, odevvp); 887 KASSERT(devvp->v_type == VCHR, ("reclaimed devvp")); 888 dev = devvp->v_rdev; 889 KASSERT(dev->si_snapdata == NULL, ("non-NULL snapshot data")); 890 if (atomic_cmpset_acq_ptr((uintptr_t *)&dev->si_mountpt, 0, 891 (uintptr_t)mp) == 0) { 892 mntfs_freevp(devvp); 893 return (EBUSY); 894 } 895 g_topology_lock(); 896 error = g_vfs_open(devvp, &cp, "ffs", ronly ? 0 : 1); 897 g_topology_unlock(); 898 if (error != 0) { 899 atomic_store_rel_ptr((uintptr_t *)&dev->si_mountpt, 0); 900 mntfs_freevp(devvp); 901 return (error); 902 } 903 dev_ref(dev); 904 devvp->v_bufobj.bo_ops = &ffs_ops; 905 BO_LOCK(&odevvp->v_bufobj); 906 odevvp->v_bufobj.bo_flag |= BO_NOBUFS; 907 BO_UNLOCK(&odevvp->v_bufobj); 908 VOP_UNLOCK(devvp); 909 if (dev->si_iosize_max != 0) 910 mp->mnt_iosize_max = dev->si_iosize_max; 911 if (mp->mnt_iosize_max > maxphys) 912 mp->mnt_iosize_max = maxphys; 913 if ((SBLOCKSIZE % cp->provider->sectorsize) != 0) { 914 error = EINVAL; 915 vfs_mount_error(mp, 916 "Invalid sectorsize %d for superblock size %d", 917 cp->provider->sectorsize, SBLOCKSIZE); 918 goto out; 919 } 920 /* fetch the superblock and summary information */ 921 if ((mp->mnt_flag & (MNT_ROOTFS | MNT_FORCE)) != 0) 922 error = ffs_sbsearch(devvp, &fs, 0, M_UFSMNT, ffs_use_bread); 923 else 924 error = ffs_sbget(devvp, &fs, UFS_STDSB, 0, M_UFSMNT, 925 ffs_use_bread); 926 if (error != 0) 927 goto out; 928 fs->fs_flags &= ~FS_UNCLEAN; 929 if (fs->fs_clean == 0) { 930 fs->fs_flags |= FS_UNCLEAN; 931 if (ronly || (mp->mnt_flag & MNT_FORCE) || 932 ((fs->fs_flags & (FS_SUJ | FS_NEEDSFSCK)) == 0 && 933 (fs->fs_flags & FS_DOSOFTDEP))) { 934 printf("WARNING: %s was not properly dismounted\n", 935 mp->mnt_stat.f_mntonname); 936 } else { 937 vfs_mount_error(mp, "R/W mount on %s denied. " 938 "Filesystem is not clean - run fsck.%s", 939 mp->mnt_stat.f_mntonname, 940 (fs->fs_flags & FS_SUJ) == 0 ? "" : 941 " Forced mount will invalidate journal contents"); 942 error = EPERM; 943 goto out; 944 } 945 if ((fs->fs_pendingblocks != 0 || fs->fs_pendinginodes != 0) && 946 (mp->mnt_flag & MNT_FORCE)) { 947 printf("WARNING: %s: lost blocks %jd files %d\n", 948 mp->mnt_stat.f_mntonname, 949 (intmax_t)fs->fs_pendingblocks, 950 fs->fs_pendinginodes); 951 fs->fs_pendingblocks = 0; 952 fs->fs_pendinginodes = 0; 953 } 954 } 955 if (fs->fs_pendingblocks != 0 || fs->fs_pendinginodes != 0) { 956 printf("WARNING: %s: mount pending error: blocks %jd " 957 "files %d\n", mp->mnt_stat.f_mntonname, 958 (intmax_t)fs->fs_pendingblocks, fs->fs_pendinginodes); 959 fs->fs_pendingblocks = 0; 960 fs->fs_pendinginodes = 0; 961 } 962 if ((fs->fs_flags & FS_GJOURNAL) != 0) { 963 #ifdef UFS_GJOURNAL 964 /* 965 * Get journal provider name. 966 */ 967 len = 1024; 968 mp->mnt_gjprovider = malloc((uint64_t)len, M_UFSMNT, M_WAITOK); 969 if (g_io_getattr("GJOURNAL::provider", cp, &len, 970 mp->mnt_gjprovider) == 0) { 971 mp->mnt_gjprovider = realloc(mp->mnt_gjprovider, len, 972 M_UFSMNT, M_WAITOK); 973 MNT_ILOCK(mp); 974 mp->mnt_flag |= MNT_GJOURNAL; 975 MNT_IUNLOCK(mp); 976 } else { 977 if ((mp->mnt_flag & MNT_RDONLY) == 0) 978 printf("WARNING: %s: GJOURNAL flag on fs " 979 "but no gjournal provider below\n", 980 mp->mnt_stat.f_mntonname); 981 free(mp->mnt_gjprovider, M_UFSMNT); 982 mp->mnt_gjprovider = NULL; 983 } 984 #else 985 printf("WARNING: %s: GJOURNAL flag on fs but no " 986 "UFS_GJOURNAL support\n", mp->mnt_stat.f_mntonname); 987 #endif 988 } else { 989 mp->mnt_gjprovider = NULL; 990 } 991 ump = malloc(sizeof *ump, M_UFSMNT, M_WAITOK | M_ZERO); 992 ump->um_cp = cp; 993 ump->um_bo = &devvp->v_bufobj; 994 ump->um_fs = fs; 995 if (fs->fs_magic == FS_UFS1_MAGIC) { 996 ump->um_fstype = UFS1; 997 ump->um_balloc = ffs_balloc_ufs1; 998 } else { 999 ump->um_fstype = UFS2; 1000 ump->um_balloc = ffs_balloc_ufs2; 1001 } 1002 ump->um_blkatoff = ffs_blkatoff; 1003 ump->um_truncate = ffs_truncate; 1004 ump->um_update = ffs_update; 1005 ump->um_valloc = ffs_valloc; 1006 ump->um_vfree = ffs_vfree; 1007 ump->um_ifree = ffs_ifree; 1008 ump->um_rdonly = ffs_rdonly; 1009 ump->um_snapgone = ffs_snapgone; 1010 if ((mp->mnt_flag & MNT_UNTRUSTED) != 0) 1011 ump->um_check_blkno = ffs_check_blkno; 1012 else 1013 ump->um_check_blkno = NULL; 1014 mtx_init(UFS_MTX(ump), "FFS", "FFS Lock", MTX_DEF); 1015 fs->fs_ronly = ronly; 1016 fs->fs_active = NULL; 1017 mp->mnt_data = ump; 1018 mp->mnt_stat.f_fsid.val[0] = fs->fs_id[0]; 1019 mp->mnt_stat.f_fsid.val[1] = fs->fs_id[1]; 1020 nmp = NULL; 1021 if (fs->fs_id[0] == 0 || fs->fs_id[1] == 0 || 1022 (nmp = vfs_getvfs(&mp->mnt_stat.f_fsid))) { 1023 if (nmp) 1024 vfs_rel(nmp); 1025 vfs_getnewfsid(mp); 1026 } 1027 ump->um_bsize = fs->fs_bsize; 1028 ump->um_maxsymlinklen = fs->fs_maxsymlinklen; 1029 MNT_ILOCK(mp); 1030 mp->mnt_flag |= MNT_LOCAL; 1031 MNT_IUNLOCK(mp); 1032 if ((fs->fs_flags & FS_MULTILABEL) != 0) { 1033 #ifdef MAC 1034 MNT_ILOCK(mp); 1035 mp->mnt_flag |= MNT_MULTILABEL; 1036 MNT_IUNLOCK(mp); 1037 #else 1038 printf("WARNING: %s: multilabel flag on fs but " 1039 "no MAC support\n", mp->mnt_stat.f_mntonname); 1040 #endif 1041 } 1042 if ((fs->fs_flags & FS_ACLS) != 0) { 1043 #ifdef UFS_ACL 1044 MNT_ILOCK(mp); 1045 1046 if (mp->mnt_flag & MNT_NFS4ACLS) 1047 printf("WARNING: %s: ACLs flag on fs conflicts with " 1048 "\"nfsv4acls\" mount option; option ignored\n", 1049 mp->mnt_stat.f_mntonname); 1050 mp->mnt_flag &= ~MNT_NFS4ACLS; 1051 mp->mnt_flag |= MNT_ACLS; 1052 1053 MNT_IUNLOCK(mp); 1054 #else 1055 printf("WARNING: %s: ACLs flag on fs but no ACLs support\n", 1056 mp->mnt_stat.f_mntonname); 1057 #endif 1058 } 1059 if ((fs->fs_flags & FS_NFS4ACLS) != 0) { 1060 #ifdef UFS_ACL 1061 MNT_ILOCK(mp); 1062 1063 if (mp->mnt_flag & MNT_ACLS) 1064 printf("WARNING: %s: NFSv4 ACLs flag on fs conflicts " 1065 "with \"acls\" mount option; option ignored\n", 1066 mp->mnt_stat.f_mntonname); 1067 mp->mnt_flag &= ~MNT_ACLS; 1068 mp->mnt_flag |= MNT_NFS4ACLS; 1069 1070 MNT_IUNLOCK(mp); 1071 #else 1072 printf("WARNING: %s: NFSv4 ACLs flag on fs but no " 1073 "ACLs support\n", mp->mnt_stat.f_mntonname); 1074 #endif 1075 } 1076 if ((fs->fs_flags & FS_TRIM) != 0) { 1077 len = sizeof(int); 1078 if (g_io_getattr("GEOM::candelete", cp, &len, 1079 &candelete) == 0) { 1080 if (candelete) 1081 ump->um_flags |= UM_CANDELETE; 1082 else 1083 printf("WARNING: %s: TRIM flag on fs but disk " 1084 "does not support TRIM\n", 1085 mp->mnt_stat.f_mntonname); 1086 } else { 1087 printf("WARNING: %s: TRIM flag on fs but disk does " 1088 "not confirm that it supports TRIM\n", 1089 mp->mnt_stat.f_mntonname); 1090 } 1091 if (((ump->um_flags) & UM_CANDELETE) != 0) { 1092 ump->um_trim_tq = taskqueue_create("trim", M_WAITOK, 1093 taskqueue_thread_enqueue, &ump->um_trim_tq); 1094 taskqueue_start_threads(&ump->um_trim_tq, 1, PVFS, 1095 "%s trim", mp->mnt_stat.f_mntonname); 1096 ump->um_trimhash = hashinit(MAXTRIMIO, M_TRIM, 1097 &ump->um_trimlisthashsize); 1098 } 1099 } 1100 1101 len = sizeof(int); 1102 if (g_io_getattr("GEOM::canspeedup", cp, &len, &canspeedup) == 0) { 1103 if (canspeedup) 1104 ump->um_flags |= UM_CANSPEEDUP; 1105 } 1106 1107 ump->um_mountp = mp; 1108 ump->um_dev = dev; 1109 ump->um_devvp = devvp; 1110 ump->um_odevvp = odevvp; 1111 ump->um_nindir = fs->fs_nindir; 1112 ump->um_bptrtodb = fs->fs_fsbtodb; 1113 ump->um_seqinc = fs->fs_frag; 1114 for (i = 0; i < MAXQUOTAS; i++) 1115 ump->um_quotas[i] = NULLVP; 1116 #ifdef UFS_EXTATTR 1117 ufs_extattr_uepm_init(&ump->um_extattr); 1118 #endif 1119 /* 1120 * Set FS local "last mounted on" information (NULL pad) 1121 */ 1122 bzero(fs->fs_fsmnt, MAXMNTLEN); 1123 strlcpy(fs->fs_fsmnt, mp->mnt_stat.f_mntonname, MAXMNTLEN); 1124 mp->mnt_stat.f_iosize = fs->fs_bsize; 1125 1126 if (mp->mnt_flag & MNT_ROOTFS) { 1127 /* 1128 * Root mount; update timestamp in mount structure. 1129 * this will be used by the common root mount code 1130 * to update the system clock. 1131 */ 1132 mp->mnt_time = fs->fs_time; 1133 } 1134 1135 if (ronly == 0) { 1136 fs->fs_mtime = time_second; 1137 if ((fs->fs_flags & FS_DOSOFTDEP) && 1138 (error = softdep_mount(devvp, mp, fs, cred)) != 0) { 1139 ffs_flushfiles(mp, FORCECLOSE, td); 1140 goto out; 1141 } 1142 if (fs->fs_snapinum[0] != 0) 1143 ffs_snapshot_mount(mp); 1144 fs->fs_fmod = 1; 1145 fs->fs_clean = 0; 1146 (void) ffs_sbupdate(ump, MNT_WAIT, 0); 1147 } 1148 /* 1149 * Initialize filesystem state information in mount struct. 1150 */ 1151 MNT_ILOCK(mp); 1152 mp->mnt_kern_flag |= MNTK_LOOKUP_SHARED | MNTK_EXTENDED_SHARED | 1153 MNTK_NO_IOPF | MNTK_UNMAPPED_BUFS | MNTK_USES_BCACHE; 1154 MNT_IUNLOCK(mp); 1155 #ifdef UFS_EXTATTR 1156 #ifdef UFS_EXTATTR_AUTOSTART 1157 /* 1158 * 1159 * Auto-starting does the following: 1160 * - check for /.attribute in the fs, and extattr_start if so 1161 * - for each file in .attribute, enable that file with 1162 * an attribute of the same name. 1163 * Not clear how to report errors -- probably eat them. 1164 * This would all happen while the filesystem was busy/not 1165 * available, so would effectively be "atomic". 1166 */ 1167 (void) ufs_extattr_autostart(mp, td); 1168 #endif /* !UFS_EXTATTR_AUTOSTART */ 1169 #endif /* !UFS_EXTATTR */ 1170 return (0); 1171 out: 1172 if (fs != NULL) { 1173 free(fs->fs_csp, M_UFSMNT); 1174 free(fs->fs_si, M_UFSMNT); 1175 free(fs, M_UFSMNT); 1176 } 1177 if (cp != NULL) { 1178 g_topology_lock(); 1179 g_vfs_close(cp); 1180 g_topology_unlock(); 1181 } 1182 if (ump != NULL) { 1183 mtx_destroy(UFS_MTX(ump)); 1184 if (mp->mnt_gjprovider != NULL) { 1185 free(mp->mnt_gjprovider, M_UFSMNT); 1186 mp->mnt_gjprovider = NULL; 1187 } 1188 MPASS(ump->um_softdep == NULL); 1189 free(ump, M_UFSMNT); 1190 mp->mnt_data = NULL; 1191 } 1192 BO_LOCK(&odevvp->v_bufobj); 1193 odevvp->v_bufobj.bo_flag &= ~BO_NOBUFS; 1194 BO_UNLOCK(&odevvp->v_bufobj); 1195 atomic_store_rel_ptr((uintptr_t *)&dev->si_mountpt, 0); 1196 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 1197 mntfs_freevp(devvp); 1198 dev_rel(dev); 1199 return (error); 1200 } 1201 1202 /* 1203 * A read function for use by filesystem-layer routines. 1204 */ 1205 static int 1206 ffs_use_bread(void *devfd, off_t loc, void **bufp, int size) 1207 { 1208 struct buf *bp; 1209 int error; 1210 1211 KASSERT(*bufp == NULL, ("ffs_use_bread: non-NULL *bufp %p\n", *bufp)); 1212 *bufp = malloc(size, M_UFSMNT, M_WAITOK); 1213 if ((error = bread((struct vnode *)devfd, btodb(loc), size, NOCRED, 1214 &bp)) != 0) 1215 return (error); 1216 bcopy(bp->b_data, *bufp, size); 1217 bp->b_flags |= B_INVAL | B_NOCACHE; 1218 brelse(bp); 1219 return (0); 1220 } 1221 1222 /* 1223 * unmount system call 1224 */ 1225 static int 1226 ffs_unmount(struct mount *mp, int mntflags) 1227 { 1228 struct thread *td; 1229 struct ufsmount *ump = VFSTOUFS(mp); 1230 struct fs *fs; 1231 int error, flags, susp; 1232 #ifdef UFS_EXTATTR 1233 int e_restart; 1234 #endif 1235 1236 flags = 0; 1237 td = curthread; 1238 fs = ump->um_fs; 1239 if (mntflags & MNT_FORCE) 1240 flags |= FORCECLOSE; 1241 susp = fs->fs_ronly == 0; 1242 #ifdef UFS_EXTATTR 1243 if ((error = ufs_extattr_stop(mp, td))) { 1244 if (error != EOPNOTSUPP) 1245 printf("WARNING: unmount %s: ufs_extattr_stop " 1246 "returned errno %d\n", mp->mnt_stat.f_mntonname, 1247 error); 1248 e_restart = 0; 1249 } else { 1250 ufs_extattr_uepm_destroy(&ump->um_extattr); 1251 e_restart = 1; 1252 } 1253 #endif 1254 if (susp) { 1255 error = vfs_write_suspend_umnt(mp); 1256 if (error != 0) 1257 goto fail1; 1258 } 1259 if (MOUNTEDSOFTDEP(mp)) 1260 error = softdep_flushfiles(mp, flags, td); 1261 else 1262 error = ffs_flushfiles(mp, flags, td); 1263 if (error != 0 && !ffs_fsfail_cleanup(ump, error)) 1264 goto fail; 1265 1266 UFS_LOCK(ump); 1267 if (fs->fs_pendingblocks != 0 || fs->fs_pendinginodes != 0) { 1268 printf("WARNING: unmount %s: pending error: blocks %jd " 1269 "files %d\n", fs->fs_fsmnt, (intmax_t)fs->fs_pendingblocks, 1270 fs->fs_pendinginodes); 1271 fs->fs_pendingblocks = 0; 1272 fs->fs_pendinginodes = 0; 1273 } 1274 UFS_UNLOCK(ump); 1275 if (MOUNTEDSOFTDEP(mp)) 1276 softdep_unmount(mp); 1277 MPASS(ump->um_softdep == NULL); 1278 if (fs->fs_ronly == 0) { 1279 fs->fs_clean = fs->fs_flags & (FS_UNCLEAN|FS_NEEDSFSCK) ? 0 : 1; 1280 error = ffs_sbupdate(ump, MNT_WAIT, 0); 1281 if (ffs_fsfail_cleanup(ump, error)) 1282 error = 0; 1283 if (error != 0 && !ffs_fsfail_cleanup(ump, error)) { 1284 fs->fs_clean = 0; 1285 goto fail; 1286 } 1287 } 1288 if (susp) 1289 vfs_write_resume(mp, VR_START_WRITE); 1290 if (ump->um_trim_tq != NULL) { 1291 MPASS(ump->um_trim_inflight == 0); 1292 taskqueue_free(ump->um_trim_tq); 1293 free (ump->um_trimhash, M_TRIM); 1294 } 1295 vn_lock(ump->um_devvp, LK_EXCLUSIVE | LK_RETRY); 1296 g_topology_lock(); 1297 g_vfs_close(ump->um_cp); 1298 g_topology_unlock(); 1299 BO_LOCK(&ump->um_odevvp->v_bufobj); 1300 ump->um_odevvp->v_bufobj.bo_flag &= ~BO_NOBUFS; 1301 BO_UNLOCK(&ump->um_odevvp->v_bufobj); 1302 atomic_store_rel_ptr((uintptr_t *)&ump->um_dev->si_mountpt, 0); 1303 mntfs_freevp(ump->um_devvp); 1304 vrele(ump->um_odevvp); 1305 dev_rel(ump->um_dev); 1306 mtx_destroy(UFS_MTX(ump)); 1307 if (mp->mnt_gjprovider != NULL) { 1308 free(mp->mnt_gjprovider, M_UFSMNT); 1309 mp->mnt_gjprovider = NULL; 1310 } 1311 free(fs->fs_csp, M_UFSMNT); 1312 free(fs->fs_si, M_UFSMNT); 1313 free(fs, M_UFSMNT); 1314 free(ump, M_UFSMNT); 1315 mp->mnt_data = NULL; 1316 if (td->td_su == mp) { 1317 td->td_su = NULL; 1318 vfs_rel(mp); 1319 } 1320 return (error); 1321 1322 fail: 1323 if (susp) 1324 vfs_write_resume(mp, VR_START_WRITE); 1325 fail1: 1326 #ifdef UFS_EXTATTR 1327 if (e_restart) { 1328 ufs_extattr_uepm_init(&ump->um_extattr); 1329 #ifdef UFS_EXTATTR_AUTOSTART 1330 (void) ufs_extattr_autostart(mp, td); 1331 #endif 1332 } 1333 #endif 1334 1335 return (error); 1336 } 1337 1338 /* 1339 * Flush out all the files in a filesystem. 1340 */ 1341 int 1342 ffs_flushfiles(struct mount *mp, int flags, struct thread *td) 1343 { 1344 struct ufsmount *ump; 1345 int qerror, error; 1346 1347 ump = VFSTOUFS(mp); 1348 qerror = 0; 1349 #ifdef QUOTA 1350 if (mp->mnt_flag & MNT_QUOTA) { 1351 int i; 1352 error = vflush(mp, 0, SKIPSYSTEM|flags, td); 1353 if (error) 1354 return (error); 1355 for (i = 0; i < MAXQUOTAS; i++) { 1356 error = quotaoff(td, mp, i); 1357 if (error != 0) { 1358 if ((flags & EARLYFLUSH) == 0) 1359 return (error); 1360 else 1361 qerror = error; 1362 } 1363 } 1364 1365 /* 1366 * Here we fall through to vflush again to ensure that 1367 * we have gotten rid of all the system vnodes, unless 1368 * quotas must not be closed. 1369 */ 1370 } 1371 #endif 1372 /* devvp is not locked there */ 1373 if (ump->um_devvp->v_vflag & VV_COPYONWRITE) { 1374 if ((error = vflush(mp, 0, SKIPSYSTEM | flags, td)) != 0) 1375 return (error); 1376 ffs_snapshot_unmount(mp); 1377 flags |= FORCECLOSE; 1378 /* 1379 * Here we fall through to vflush again to ensure 1380 * that we have gotten rid of all the system vnodes. 1381 */ 1382 } 1383 1384 /* 1385 * Do not close system files if quotas were not closed, to be 1386 * able to sync the remaining dquots. The freeblks softupdate 1387 * workitems might hold a reference on a dquot, preventing 1388 * quotaoff() from completing. Next round of 1389 * softdep_flushworklist() iteration should process the 1390 * blockers, allowing the next run of quotaoff() to finally 1391 * flush held dquots. 1392 * 1393 * Otherwise, flush all the files. 1394 */ 1395 if (qerror == 0 && (error = vflush(mp, 0, flags, td)) != 0) 1396 return (error); 1397 1398 /* 1399 * If this is a forcible unmount and there were any files that 1400 * were unlinked but still open, then vflush() will have 1401 * truncated and freed those files, which might have started 1402 * some trim work. Wait here for any trims to complete 1403 * and process the blkfrees which follow the trims. 1404 * This may create more dirty devvp buffers and softdep deps. 1405 */ 1406 if (ump->um_trim_tq != NULL) { 1407 while (ump->um_trim_inflight != 0) 1408 pause("ufsutr", hz); 1409 taskqueue_drain_all(ump->um_trim_tq); 1410 } 1411 1412 /* 1413 * Flush filesystem metadata. 1414 */ 1415 vn_lock(ump->um_devvp, LK_EXCLUSIVE | LK_RETRY); 1416 error = VOP_FSYNC(ump->um_devvp, MNT_WAIT, td); 1417 VOP_UNLOCK(ump->um_devvp); 1418 return (error); 1419 } 1420 1421 /* 1422 * Get filesystem statistics. 1423 */ 1424 static int 1425 ffs_statfs(struct mount *mp, struct statfs *sbp) 1426 { 1427 struct ufsmount *ump; 1428 struct fs *fs; 1429 1430 ump = VFSTOUFS(mp); 1431 fs = ump->um_fs; 1432 if (fs->fs_magic != FS_UFS1_MAGIC && fs->fs_magic != FS_UFS2_MAGIC) 1433 panic("ffs_statfs"); 1434 sbp->f_version = STATFS_VERSION; 1435 sbp->f_bsize = fs->fs_fsize; 1436 sbp->f_iosize = fs->fs_bsize; 1437 sbp->f_blocks = fs->fs_dsize; 1438 UFS_LOCK(ump); 1439 sbp->f_bfree = fs->fs_cstotal.cs_nbfree * fs->fs_frag + 1440 fs->fs_cstotal.cs_nffree + dbtofsb(fs, fs->fs_pendingblocks); 1441 sbp->f_bavail = freespace(fs, fs->fs_minfree) + 1442 dbtofsb(fs, fs->fs_pendingblocks); 1443 sbp->f_files = fs->fs_ncg * fs->fs_ipg - UFS_ROOTINO; 1444 sbp->f_ffree = fs->fs_cstotal.cs_nifree + fs->fs_pendinginodes; 1445 UFS_UNLOCK(ump); 1446 sbp->f_namemax = UFS_MAXNAMLEN; 1447 return (0); 1448 } 1449 1450 static bool 1451 sync_doupdate(struct inode *ip) 1452 { 1453 1454 return ((ip->i_flag & (IN_ACCESS | IN_CHANGE | IN_MODIFIED | 1455 IN_UPDATE)) != 0); 1456 } 1457 1458 static int 1459 ffs_sync_lazy_filter(struct vnode *vp, void *arg __unused) 1460 { 1461 struct inode *ip; 1462 1463 /* 1464 * Flags are safe to access because ->v_data invalidation 1465 * is held off by listmtx. 1466 */ 1467 if (vp->v_type == VNON) 1468 return (false); 1469 ip = VTOI(vp); 1470 if (!sync_doupdate(ip) && (vp->v_iflag & VI_OWEINACT) == 0) 1471 return (false); 1472 return (true); 1473 } 1474 1475 /* 1476 * For a lazy sync, we only care about access times, quotas and the 1477 * superblock. Other filesystem changes are already converted to 1478 * cylinder group blocks or inode blocks updates and are written to 1479 * disk by syncer. 1480 */ 1481 static int 1482 ffs_sync_lazy(struct mount *mp) 1483 { 1484 struct vnode *mvp, *vp; 1485 struct inode *ip; 1486 int allerror, error; 1487 1488 allerror = 0; 1489 if ((mp->mnt_flag & MNT_NOATIME) != 0) { 1490 #ifdef QUOTA 1491 qsync(mp); 1492 #endif 1493 goto sbupdate; 1494 } 1495 MNT_VNODE_FOREACH_LAZY(vp, mp, mvp, ffs_sync_lazy_filter, NULL) { 1496 if (vp->v_type == VNON) { 1497 VI_UNLOCK(vp); 1498 continue; 1499 } 1500 ip = VTOI(vp); 1501 1502 /* 1503 * The IN_ACCESS flag is converted to IN_MODIFIED by 1504 * ufs_close() and ufs_getattr() by the calls to 1505 * ufs_itimes_locked(), without subsequent UFS_UPDATE(). 1506 * Test also all the other timestamp flags too, to pick up 1507 * any other cases that could be missed. 1508 */ 1509 if (!sync_doupdate(ip) && (vp->v_iflag & VI_OWEINACT) == 0) { 1510 VI_UNLOCK(vp); 1511 continue; 1512 } 1513 if ((error = vget(vp, LK_EXCLUSIVE | LK_NOWAIT | LK_INTERLOCK)) != 0) 1514 continue; 1515 #ifdef QUOTA 1516 qsyncvp(vp); 1517 #endif 1518 if (sync_doupdate(ip)) 1519 error = ffs_update(vp, 0); 1520 if (error != 0) 1521 allerror = error; 1522 vput(vp); 1523 } 1524 sbupdate: 1525 if (VFSTOUFS(mp)->um_fs->fs_fmod != 0 && 1526 (error = ffs_sbupdate(VFSTOUFS(mp), MNT_LAZY, 0)) != 0) 1527 allerror = error; 1528 return (allerror); 1529 } 1530 1531 /* 1532 * Go through the disk queues to initiate sandbagged IO; 1533 * go through the inodes to write those that have been modified; 1534 * initiate the writing of the super block if it has been modified. 1535 * 1536 * Note: we are always called with the filesystem marked busy using 1537 * vfs_busy(). 1538 */ 1539 static int 1540 ffs_sync(struct mount *mp, int waitfor) 1541 { 1542 struct vnode *mvp, *vp, *devvp; 1543 struct thread *td; 1544 struct inode *ip; 1545 struct ufsmount *ump = VFSTOUFS(mp); 1546 struct fs *fs; 1547 int error, count, lockreq, allerror = 0; 1548 int suspend; 1549 int suspended; 1550 int secondary_writes; 1551 int secondary_accwrites; 1552 int softdep_deps; 1553 int softdep_accdeps; 1554 struct bufobj *bo; 1555 1556 suspend = 0; 1557 suspended = 0; 1558 td = curthread; 1559 fs = ump->um_fs; 1560 if (fs->fs_fmod != 0 && fs->fs_ronly != 0) 1561 panic("%s: ffs_sync: modification on read-only filesystem", 1562 fs->fs_fsmnt); 1563 if (waitfor == MNT_LAZY) { 1564 if (!rebooting) 1565 return (ffs_sync_lazy(mp)); 1566 waitfor = MNT_NOWAIT; 1567 } 1568 1569 /* 1570 * Write back each (modified) inode. 1571 */ 1572 lockreq = LK_EXCLUSIVE | LK_NOWAIT; 1573 if (waitfor == MNT_SUSPEND) { 1574 suspend = 1; 1575 waitfor = MNT_WAIT; 1576 } 1577 if (waitfor == MNT_WAIT) 1578 lockreq = LK_EXCLUSIVE; 1579 lockreq |= LK_INTERLOCK; 1580 loop: 1581 /* Grab snapshot of secondary write counts */ 1582 MNT_ILOCK(mp); 1583 secondary_writes = mp->mnt_secondary_writes; 1584 secondary_accwrites = mp->mnt_secondary_accwrites; 1585 MNT_IUNLOCK(mp); 1586 1587 /* Grab snapshot of softdep dependency counts */ 1588 softdep_get_depcounts(mp, &softdep_deps, &softdep_accdeps); 1589 1590 MNT_VNODE_FOREACH_ALL(vp, mp, mvp) { 1591 /* 1592 * Depend on the vnode interlock to keep things stable enough 1593 * for a quick test. Since there might be hundreds of 1594 * thousands of vnodes, we cannot afford even a subroutine 1595 * call unless there's a good chance that we have work to do. 1596 */ 1597 if (vp->v_type == VNON) { 1598 VI_UNLOCK(vp); 1599 continue; 1600 } 1601 ip = VTOI(vp); 1602 if ((ip->i_flag & 1603 (IN_ACCESS | IN_CHANGE | IN_MODIFIED | IN_UPDATE)) == 0 && 1604 vp->v_bufobj.bo_dirty.bv_cnt == 0) { 1605 VI_UNLOCK(vp); 1606 continue; 1607 } 1608 if ((error = vget(vp, lockreq)) != 0) { 1609 if (error == ENOENT) { 1610 MNT_VNODE_FOREACH_ALL_ABORT(mp, mvp); 1611 goto loop; 1612 } 1613 continue; 1614 } 1615 #ifdef QUOTA 1616 qsyncvp(vp); 1617 #endif 1618 for (;;) { 1619 error = ffs_syncvnode(vp, waitfor, 0); 1620 if (error == ERELOOKUP) 1621 continue; 1622 if (error != 0) 1623 allerror = error; 1624 break; 1625 } 1626 vput(vp); 1627 } 1628 /* 1629 * Force stale filesystem control information to be flushed. 1630 */ 1631 if (waitfor == MNT_WAIT || rebooting) { 1632 if ((error = softdep_flushworklist(ump->um_mountp, &count, td))) 1633 allerror = error; 1634 if (ffs_fsfail_cleanup(ump, allerror)) 1635 allerror = 0; 1636 /* Flushed work items may create new vnodes to clean */ 1637 if (allerror == 0 && count) 1638 goto loop; 1639 } 1640 1641 devvp = ump->um_devvp; 1642 bo = &devvp->v_bufobj; 1643 BO_LOCK(bo); 1644 if (bo->bo_numoutput > 0 || bo->bo_dirty.bv_cnt > 0) { 1645 BO_UNLOCK(bo); 1646 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 1647 error = VOP_FSYNC(devvp, waitfor, td); 1648 VOP_UNLOCK(devvp); 1649 if (MOUNTEDSOFTDEP(mp) && (error == 0 || error == EAGAIN)) 1650 error = ffs_sbupdate(ump, waitfor, 0); 1651 if (error != 0) 1652 allerror = error; 1653 if (ffs_fsfail_cleanup(ump, allerror)) 1654 allerror = 0; 1655 if (allerror == 0 && waitfor == MNT_WAIT) 1656 goto loop; 1657 } else if (suspend != 0) { 1658 if (softdep_check_suspend(mp, 1659 devvp, 1660 softdep_deps, 1661 softdep_accdeps, 1662 secondary_writes, 1663 secondary_accwrites) != 0) { 1664 MNT_IUNLOCK(mp); 1665 goto loop; /* More work needed */ 1666 } 1667 mtx_assert(MNT_MTX(mp), MA_OWNED); 1668 mp->mnt_kern_flag |= MNTK_SUSPEND2 | MNTK_SUSPENDED; 1669 MNT_IUNLOCK(mp); 1670 suspended = 1; 1671 } else 1672 BO_UNLOCK(bo); 1673 /* 1674 * Write back modified superblock. 1675 */ 1676 if (fs->fs_fmod != 0 && 1677 (error = ffs_sbupdate(ump, waitfor, suspended)) != 0) 1678 allerror = error; 1679 if (ffs_fsfail_cleanup(ump, allerror)) 1680 allerror = 0; 1681 return (allerror); 1682 } 1683 1684 int 1685 ffs_vget(struct mount *mp, ino_t ino, int flags, struct vnode **vpp) 1686 { 1687 return (ffs_vgetf(mp, ino, flags, vpp, 0)); 1688 } 1689 1690 int 1691 ffs_vgetf(struct mount *mp, 1692 ino_t ino, 1693 int flags, 1694 struct vnode **vpp, 1695 int ffs_flags) 1696 { 1697 struct fs *fs; 1698 struct inode *ip; 1699 struct ufsmount *ump; 1700 struct buf *bp; 1701 struct vnode *vp; 1702 daddr_t dbn; 1703 int error; 1704 1705 MPASS((ffs_flags & (FFSV_REPLACE | FFSV_REPLACE_DOOMED)) == 0 || 1706 (flags & LK_EXCLUSIVE) != 0); 1707 1708 error = vfs_hash_get(mp, ino, flags, curthread, vpp, NULL, NULL); 1709 if (error != 0) 1710 return (error); 1711 if (*vpp != NULL) { 1712 if ((ffs_flags & FFSV_REPLACE) == 0 || 1713 ((ffs_flags & FFSV_REPLACE_DOOMED) == 0 || 1714 !VN_IS_DOOMED(*vpp))) 1715 return (0); 1716 vgone(*vpp); 1717 vput(*vpp); 1718 } 1719 1720 /* 1721 * We must promote to an exclusive lock for vnode creation. This 1722 * can happen if lookup is passed LOCKSHARED. 1723 */ 1724 if ((flags & LK_TYPE_MASK) == LK_SHARED) { 1725 flags &= ~LK_TYPE_MASK; 1726 flags |= LK_EXCLUSIVE; 1727 } 1728 1729 /* 1730 * We do not lock vnode creation as it is believed to be too 1731 * expensive for such rare case as simultaneous creation of vnode 1732 * for same ino by different processes. We just allow them to race 1733 * and check later to decide who wins. Let the race begin! 1734 */ 1735 1736 ump = VFSTOUFS(mp); 1737 fs = ump->um_fs; 1738 ip = uma_zalloc_smr(uma_inode, M_WAITOK | M_ZERO); 1739 1740 /* Allocate a new vnode/inode. */ 1741 error = getnewvnode("ufs", mp, fs->fs_magic == FS_UFS1_MAGIC ? 1742 &ffs_vnodeops1 : &ffs_vnodeops2, &vp); 1743 if (error) { 1744 *vpp = NULL; 1745 uma_zfree_smr(uma_inode, ip); 1746 return (error); 1747 } 1748 /* 1749 * FFS supports recursive locking. 1750 */ 1751 lockmgr(vp->v_vnlock, LK_EXCLUSIVE | LK_NOWITNESS, NULL); 1752 VN_LOCK_AREC(vp); 1753 vp->v_data = ip; 1754 vp->v_bufobj.bo_bsize = fs->fs_bsize; 1755 ip->i_vnode = vp; 1756 ip->i_ump = ump; 1757 ip->i_number = ino; 1758 ip->i_ea_refs = 0; 1759 ip->i_nextclustercg = -1; 1760 ip->i_flag = fs->fs_magic == FS_UFS1_MAGIC ? 0 : IN_UFS2; 1761 ip->i_mode = 0; /* ensure error cases below throw away vnode */ 1762 cluster_init_vn(&ip->i_clusterw); 1763 #ifdef DIAGNOSTIC 1764 ufs_init_trackers(ip); 1765 #endif 1766 #ifdef QUOTA 1767 { 1768 int i; 1769 for (i = 0; i < MAXQUOTAS; i++) 1770 ip->i_dquot[i] = NODQUOT; 1771 } 1772 #endif 1773 1774 if (ffs_flags & FFSV_FORCEINSMQ) 1775 vp->v_vflag |= VV_FORCEINSMQ; 1776 error = insmntque(vp, mp); 1777 if (error != 0) { 1778 uma_zfree_smr(uma_inode, ip); 1779 *vpp = NULL; 1780 return (error); 1781 } 1782 vp->v_vflag &= ~VV_FORCEINSMQ; 1783 error = vfs_hash_insert(vp, ino, flags, curthread, vpp, NULL, NULL); 1784 if (error != 0) 1785 return (error); 1786 if (*vpp != NULL) { 1787 /* 1788 * Calls from ffs_valloc() (i.e. FFSV_REPLACE set) 1789 * operate on empty inode, which must not be found by 1790 * other threads until fully filled. Vnode for empty 1791 * inode must be not re-inserted on the hash by other 1792 * thread, after removal by us at the beginning. 1793 */ 1794 MPASS((ffs_flags & FFSV_REPLACE) == 0); 1795 return (0); 1796 } 1797 if (I_IS_UFS1(ip)) 1798 ip->i_din1 = uma_zalloc(uma_ufs1, M_WAITOK); 1799 else 1800 ip->i_din2 = uma_zalloc(uma_ufs2, M_WAITOK); 1801 1802 if ((ffs_flags & FFSV_NEWINODE) != 0) { 1803 /* New inode, just zero out its contents. */ 1804 if (I_IS_UFS1(ip)) 1805 memset(ip->i_din1, 0, sizeof(struct ufs1_dinode)); 1806 else 1807 memset(ip->i_din2, 0, sizeof(struct ufs2_dinode)); 1808 } else { 1809 /* Read the disk contents for the inode, copy into the inode. */ 1810 dbn = fsbtodb(fs, ino_to_fsba(fs, ino)); 1811 error = ffs_breadz(ump, ump->um_devvp, dbn, dbn, 1812 (int)fs->fs_bsize, NULL, NULL, 0, NOCRED, 0, NULL, &bp); 1813 if (error != 0) { 1814 /* 1815 * The inode does not contain anything useful, so it 1816 * would be misleading to leave it on its hash chain. 1817 * With mode still zero, it will be unlinked and 1818 * returned to the free list by vput(). 1819 */ 1820 vgone(vp); 1821 vput(vp); 1822 *vpp = NULL; 1823 return (error); 1824 } 1825 if ((error = ffs_load_inode(bp, ip, fs, ino)) != 0) { 1826 bqrelse(bp); 1827 vgone(vp); 1828 vput(vp); 1829 *vpp = NULL; 1830 return (error); 1831 } 1832 bqrelse(bp); 1833 } 1834 if (DOINGSOFTDEP(vp) && (!fs->fs_ronly || 1835 (ffs_flags & FFSV_FORCEINODEDEP) != 0)) 1836 softdep_load_inodeblock(ip); 1837 else 1838 ip->i_effnlink = ip->i_nlink; 1839 1840 /* 1841 * Initialize the vnode from the inode, check for aliases. 1842 * Note that the underlying vnode may have changed. 1843 */ 1844 error = ufs_vinit(mp, I_IS_UFS1(ip) ? &ffs_fifoops1 : &ffs_fifoops2, 1845 &vp); 1846 if (error) { 1847 vgone(vp); 1848 vput(vp); 1849 *vpp = NULL; 1850 return (error); 1851 } 1852 1853 /* 1854 * Finish inode initialization. 1855 */ 1856 if (vp->v_type != VFIFO) { 1857 /* FFS supports shared locking for all files except fifos. */ 1858 VN_LOCK_ASHARE(vp); 1859 } 1860 1861 /* 1862 * Set up a generation number for this inode if it does not 1863 * already have one. This should only happen on old filesystems. 1864 */ 1865 if (ip->i_gen == 0) { 1866 while (ip->i_gen == 0) 1867 ip->i_gen = arc4random(); 1868 if ((vp->v_mount->mnt_flag & MNT_RDONLY) == 0) { 1869 UFS_INODE_SET_FLAG(ip, IN_MODIFIED); 1870 DIP_SET(ip, i_gen, ip->i_gen); 1871 } 1872 } 1873 #ifdef MAC 1874 if ((mp->mnt_flag & MNT_MULTILABEL) && ip->i_mode) { 1875 /* 1876 * If this vnode is already allocated, and we're running 1877 * multi-label, attempt to perform a label association 1878 * from the extended attributes on the inode. 1879 */ 1880 error = mac_vnode_associate_extattr(mp, vp); 1881 if (error) { 1882 /* ufs_inactive will release ip->i_devvp ref. */ 1883 vgone(vp); 1884 vput(vp); 1885 *vpp = NULL; 1886 return (error); 1887 } 1888 } 1889 #endif 1890 1891 vn_set_state(vp, VSTATE_CONSTRUCTED); 1892 *vpp = vp; 1893 return (0); 1894 } 1895 1896 /* 1897 * File handle to vnode 1898 * 1899 * Have to be really careful about stale file handles: 1900 * - check that the inode number is valid 1901 * - for UFS2 check that the inode number is initialized 1902 * - call ffs_vget() to get the locked inode 1903 * - check for an unallocated inode (i_mode == 0) 1904 * - check that the given client host has export rights and return 1905 * those rights via. exflagsp and credanonp 1906 */ 1907 static int 1908 ffs_fhtovp(struct mount *mp, struct fid *fhp, int flags, struct vnode **vpp) 1909 { 1910 struct ufid *ufhp; 1911 1912 ufhp = (struct ufid *)fhp; 1913 return (ffs_inotovp(mp, ufhp->ufid_ino, ufhp->ufid_gen, flags, 1914 vpp, 0)); 1915 } 1916 1917 /* 1918 * Return a vnode from a mounted filesystem for inode with specified 1919 * generation number. Return ESTALE if the inode with given generation 1920 * number no longer exists on that filesystem. 1921 */ 1922 int 1923 ffs_inotovp(struct mount *mp, 1924 ino_t ino, 1925 uint64_t gen, 1926 int lflags, 1927 struct vnode **vpp, 1928 int ffs_flags) 1929 { 1930 struct ufsmount *ump; 1931 struct vnode *nvp; 1932 struct inode *ip; 1933 struct fs *fs; 1934 struct cg *cgp; 1935 struct buf *bp; 1936 uint64_t cg; 1937 1938 ump = VFSTOUFS(mp); 1939 fs = ump->um_fs; 1940 *vpp = NULL; 1941 1942 if (ino < UFS_ROOTINO || ino >= fs->fs_ncg * fs->fs_ipg) 1943 return (ESTALE); 1944 1945 /* 1946 * Need to check if inode is initialized because UFS2 does lazy 1947 * initialization and nfs_fhtovp can offer arbitrary inode numbers. 1948 */ 1949 if (fs->fs_magic == FS_UFS2_MAGIC) { 1950 cg = ino_to_cg(fs, ino); 1951 if (ffs_getcg(fs, ump->um_devvp, cg, 0, &bp, &cgp) != 0) 1952 return (ESTALE); 1953 if (ino >= cg * fs->fs_ipg + cgp->cg_initediblk) { 1954 brelse(bp); 1955 return (ESTALE); 1956 } 1957 brelse(bp); 1958 } 1959 1960 if (ffs_vgetf(mp, ino, lflags, &nvp, ffs_flags) != 0) 1961 return (ESTALE); 1962 1963 ip = VTOI(nvp); 1964 if (ip->i_mode == 0 || ip->i_gen != gen || ip->i_effnlink <= 0) { 1965 if (ip->i_mode == 0) 1966 vgone(nvp); 1967 vput(nvp); 1968 return (ESTALE); 1969 } 1970 1971 vnode_create_vobject(nvp, DIP(ip, i_size), curthread); 1972 *vpp = nvp; 1973 return (0); 1974 } 1975 1976 /* 1977 * Initialize the filesystem. 1978 */ 1979 static int 1980 ffs_init(struct vfsconf *vfsp) 1981 { 1982 1983 ffs_susp_initialize(); 1984 softdep_initialize(); 1985 return (ufs_init(vfsp)); 1986 } 1987 1988 /* 1989 * Undo the work of ffs_init(). 1990 */ 1991 static int 1992 ffs_uninit(struct vfsconf *vfsp) 1993 { 1994 int ret; 1995 1996 ret = ufs_uninit(vfsp); 1997 softdep_uninitialize(); 1998 ffs_susp_uninitialize(); 1999 taskqueue_drain_all(taskqueue_thread); 2000 return (ret); 2001 } 2002 2003 /* 2004 * Structure used to pass information from ffs_sbupdate to its 2005 * helper routine ffs_use_bwrite. 2006 */ 2007 struct devfd { 2008 struct ufsmount *ump; 2009 struct buf *sbbp; 2010 int waitfor; 2011 int suspended; 2012 int error; 2013 }; 2014 2015 /* 2016 * Write a superblock and associated information back to disk. 2017 */ 2018 int 2019 ffs_sbupdate(struct ufsmount *ump, int waitfor, int suspended) 2020 { 2021 struct fs *fs; 2022 struct buf *sbbp; 2023 struct devfd devfd; 2024 2025 fs = ump->um_fs; 2026 if (fs->fs_ronly == 1 && 2027 (ump->um_mountp->mnt_flag & (MNT_RDONLY | MNT_UPDATE)) != 2028 (MNT_RDONLY | MNT_UPDATE)) 2029 panic("ffs_sbupdate: write read-only filesystem"); 2030 /* 2031 * We use the superblock's buf to serialize calls to ffs_sbupdate(). 2032 * Copy superblock to this buffer and have it written out. 2033 */ 2034 sbbp = getblk(ump->um_devvp, btodb(fs->fs_sblockloc), 2035 (int)fs->fs_sbsize, 0, 0, 0); 2036 UFS_LOCK(ump); 2037 fs->fs_fmod = 0; 2038 bcopy((caddr_t)fs, sbbp->b_data, (uint64_t)fs->fs_sbsize); 2039 UFS_UNLOCK(ump); 2040 fs = (struct fs *)sbbp->b_data; 2041 /* 2042 * Initialize info needed for write function. 2043 */ 2044 devfd.ump = ump; 2045 devfd.sbbp = sbbp; 2046 devfd.waitfor = waitfor; 2047 devfd.suspended = suspended; 2048 devfd.error = 0; 2049 return (ffs_sbput(&devfd, fs, fs->fs_sblockloc, ffs_use_bwrite)); 2050 } 2051 2052 /* 2053 * Write function for use by filesystem-layer routines. 2054 */ 2055 static int 2056 ffs_use_bwrite(void *devfd, off_t loc, void *buf, int size) 2057 { 2058 struct devfd *devfdp; 2059 struct ufsmount *ump; 2060 struct buf *bp; 2061 struct fs *fs; 2062 int error; 2063 2064 devfdp = devfd; 2065 ump = devfdp->ump; 2066 bp = devfdp->sbbp; 2067 fs = (struct fs *)bp->b_data; 2068 /* 2069 * Writing the superblock summary information. 2070 */ 2071 if (loc != fs->fs_sblockloc) { 2072 bp = getblk(ump->um_devvp, btodb(loc), size, 0, 0, 0); 2073 bcopy(buf, bp->b_data, (uint64_t)size); 2074 if (devfdp->suspended) 2075 bp->b_flags |= B_VALIDSUSPWRT; 2076 if (devfdp->waitfor != MNT_WAIT) 2077 bawrite(bp); 2078 else if ((error = bwrite(bp)) != 0) 2079 devfdp->error = error; 2080 return (0); 2081 } 2082 /* 2083 * Writing the superblock itself. We need to do special checks for it. 2084 * A negative error code is returned to indicate that a copy of the 2085 * superblock has been made and that the copy is discarded when the 2086 * I/O is done. So the the caller should not attempt to restore the 2087 * fs_si field after the write is done. The caller will convert the 2088 * error code back to its usual positive value when returning it. 2089 */ 2090 if (ffs_fsfail_cleanup(ump, devfdp->error)) 2091 devfdp->error = 0; 2092 if (devfdp->error != 0) { 2093 brelse(bp); 2094 return (-devfdp->error - 1); 2095 } 2096 if (MOUNTEDSOFTDEP(ump->um_mountp)) 2097 softdep_setup_sbupdate(ump, fs, bp); 2098 if (devfdp->suspended) 2099 bp->b_flags |= B_VALIDSUSPWRT; 2100 if (devfdp->waitfor != MNT_WAIT) 2101 bawrite(bp); 2102 else if ((error = bwrite(bp)) != 0) 2103 devfdp->error = error; 2104 return (-devfdp->error - 1); 2105 } 2106 2107 static int 2108 ffs_extattrctl(struct mount *mp, int cmd, struct vnode *filename_vp, 2109 int attrnamespace, const char *attrname) 2110 { 2111 2112 #ifdef UFS_EXTATTR 2113 return (ufs_extattrctl(mp, cmd, filename_vp, attrnamespace, 2114 attrname)); 2115 #else 2116 return (vfs_stdextattrctl(mp, cmd, filename_vp, attrnamespace, 2117 attrname)); 2118 #endif 2119 } 2120 2121 static void 2122 ffs_ifree(struct ufsmount *ump, struct inode *ip) 2123 { 2124 2125 if (ump->um_fstype == UFS1 && ip->i_din1 != NULL) 2126 uma_zfree(uma_ufs1, ip->i_din1); 2127 else if (ip->i_din2 != NULL) 2128 uma_zfree(uma_ufs2, ip->i_din2); 2129 uma_zfree_smr(uma_inode, ip); 2130 } 2131 2132 static int dobkgrdwrite = 1; 2133 SYSCTL_INT(_debug, OID_AUTO, dobkgrdwrite, CTLFLAG_RW, &dobkgrdwrite, 0, 2134 "Do background writes (honoring the BV_BKGRDWRITE flag)?"); 2135 2136 /* 2137 * Complete a background write started from bwrite. 2138 */ 2139 static void 2140 ffs_backgroundwritedone(struct buf *bp) 2141 { 2142 struct bufobj *bufobj; 2143 struct buf *origbp; 2144 2145 #ifdef SOFTUPDATES 2146 if (!LIST_EMPTY(&bp->b_dep) && (bp->b_ioflags & BIO_ERROR) != 0) 2147 softdep_handle_error(bp); 2148 #endif 2149 2150 /* 2151 * Find the original buffer that we are writing. 2152 */ 2153 bufobj = bp->b_bufobj; 2154 BO_LOCK(bufobj); 2155 if ((origbp = gbincore(bp->b_bufobj, bp->b_lblkno)) == NULL) 2156 panic("backgroundwritedone: lost buffer"); 2157 2158 /* 2159 * We should mark the cylinder group buffer origbp as 2160 * dirty, to not lose the failed write. 2161 */ 2162 if ((bp->b_ioflags & BIO_ERROR) != 0) 2163 origbp->b_vflags |= BV_BKGRDERR; 2164 BO_UNLOCK(bufobj); 2165 /* 2166 * Process dependencies then return any unfinished ones. 2167 */ 2168 if (!LIST_EMPTY(&bp->b_dep) && (bp->b_ioflags & BIO_ERROR) == 0) 2169 buf_complete(bp); 2170 #ifdef SOFTUPDATES 2171 if (!LIST_EMPTY(&bp->b_dep)) 2172 softdep_move_dependencies(bp, origbp); 2173 #endif 2174 /* 2175 * This buffer is marked B_NOCACHE so when it is released 2176 * by biodone it will be tossed. Clear B_IOSTARTED in case of error. 2177 */ 2178 bp->b_flags |= B_NOCACHE; 2179 bp->b_flags &= ~(B_CACHE | B_IOSTARTED); 2180 pbrelvp(bp); 2181 2182 /* 2183 * Prevent brelse() from trying to keep and re-dirtying bp on 2184 * errors. It causes b_bufobj dereference in 2185 * bdirty()/reassignbuf(), and b_bufobj was cleared in 2186 * pbrelvp() above. 2187 */ 2188 if ((bp->b_ioflags & BIO_ERROR) != 0) 2189 bp->b_flags |= B_INVAL; 2190 bufdone(bp); 2191 BO_LOCK(bufobj); 2192 /* 2193 * Clear the BV_BKGRDINPROG flag in the original buffer 2194 * and awaken it if it is waiting for the write to complete. 2195 * If BV_BKGRDINPROG is not set in the original buffer it must 2196 * have been released and re-instantiated - which is not legal. 2197 */ 2198 KASSERT((origbp->b_vflags & BV_BKGRDINPROG), 2199 ("backgroundwritedone: lost buffer2")); 2200 origbp->b_vflags &= ~BV_BKGRDINPROG; 2201 if (origbp->b_vflags & BV_BKGRDWAIT) { 2202 origbp->b_vflags &= ~BV_BKGRDWAIT; 2203 wakeup(&origbp->b_xflags); 2204 } 2205 BO_UNLOCK(bufobj); 2206 } 2207 2208 /* 2209 * Write, release buffer on completion. (Done by iodone 2210 * if async). Do not bother writing anything if the buffer 2211 * is invalid. 2212 * 2213 * Note that we set B_CACHE here, indicating that buffer is 2214 * fully valid and thus cacheable. This is true even of NFS 2215 * now so we set it generally. This could be set either here 2216 * or in biodone() since the I/O is synchronous. We put it 2217 * here. 2218 */ 2219 static int 2220 ffs_bufwrite(struct buf *bp) 2221 { 2222 struct buf *newbp; 2223 struct cg *cgp; 2224 2225 CTR3(KTR_BUF, "bufwrite(%p) vp %p flags %X", bp, bp->b_vp, bp->b_flags); 2226 if (bp->b_flags & B_INVAL) { 2227 brelse(bp); 2228 return (0); 2229 } 2230 2231 if (!BUF_ISLOCKED(bp)) 2232 panic("bufwrite: buffer is not busy???"); 2233 /* 2234 * If a background write is already in progress, delay 2235 * writing this block if it is asynchronous. Otherwise 2236 * wait for the background write to complete. 2237 */ 2238 BO_LOCK(bp->b_bufobj); 2239 if (bp->b_vflags & BV_BKGRDINPROG) { 2240 if (bp->b_flags & B_ASYNC) { 2241 BO_UNLOCK(bp->b_bufobj); 2242 bdwrite(bp); 2243 return (0); 2244 } 2245 bp->b_vflags |= BV_BKGRDWAIT; 2246 msleep(&bp->b_xflags, BO_LOCKPTR(bp->b_bufobj), PRIBIO, 2247 "bwrbg", 0); 2248 if (bp->b_vflags & BV_BKGRDINPROG) 2249 panic("bufwrite: still writing"); 2250 } 2251 bp->b_vflags &= ~BV_BKGRDERR; 2252 BO_UNLOCK(bp->b_bufobj); 2253 2254 /* 2255 * If this buffer is marked for background writing and we 2256 * do not have to wait for it, make a copy and write the 2257 * copy so as to leave this buffer ready for further use. 2258 * 2259 * This optimization eats a lot of memory. If we have a page 2260 * or buffer shortfall we can't do it. 2261 */ 2262 if (dobkgrdwrite && (bp->b_xflags & BX_BKGRDWRITE) && 2263 (bp->b_flags & B_ASYNC) && 2264 !vm_page_count_severe() && 2265 !buf_dirty_count_severe()) { 2266 KASSERT(bp->b_iodone == NULL, 2267 ("bufwrite: needs chained iodone (%p)", bp->b_iodone)); 2268 2269 /* get a new block */ 2270 newbp = geteblk(bp->b_bufsize, GB_NOWAIT_BD); 2271 if (newbp == NULL) 2272 goto normal_write; 2273 2274 KASSERT(buf_mapped(bp), ("Unmapped cg")); 2275 memcpy(newbp->b_data, bp->b_data, bp->b_bufsize); 2276 BO_LOCK(bp->b_bufobj); 2277 bp->b_vflags |= BV_BKGRDINPROG; 2278 BO_UNLOCK(bp->b_bufobj); 2279 newbp->b_xflags |= 2280 (bp->b_xflags & BX_FSPRIV) | BX_BKGRDMARKER; 2281 newbp->b_lblkno = bp->b_lblkno; 2282 newbp->b_blkno = bp->b_blkno; 2283 newbp->b_offset = bp->b_offset; 2284 newbp->b_iodone = ffs_backgroundwritedone; 2285 newbp->b_flags |= B_ASYNC; 2286 newbp->b_flags &= ~B_INVAL; 2287 pbgetvp(bp->b_vp, newbp); 2288 2289 #ifdef SOFTUPDATES 2290 /* 2291 * Move over the dependencies. If there are rollbacks, 2292 * leave the parent buffer dirtied as it will need to 2293 * be written again. 2294 */ 2295 if (LIST_EMPTY(&bp->b_dep) || 2296 softdep_move_dependencies(bp, newbp) == 0) 2297 bundirty(bp); 2298 #else 2299 bundirty(bp); 2300 #endif 2301 2302 /* 2303 * Initiate write on the copy, release the original. The 2304 * BKGRDINPROG flag prevents it from going away until 2305 * the background write completes. We have to recalculate 2306 * its check hash in case the buffer gets freed and then 2307 * reconstituted from the buffer cache during a later read. 2308 */ 2309 if ((bp->b_xflags & BX_CYLGRP) != 0) { 2310 cgp = (struct cg *)bp->b_data; 2311 cgp->cg_ckhash = 0; 2312 cgp->cg_ckhash = 2313 calculate_crc32c(~0L, bp->b_data, bp->b_bcount); 2314 } 2315 bqrelse(bp); 2316 bp = newbp; 2317 } else 2318 /* Mark the buffer clean */ 2319 bundirty(bp); 2320 2321 /* Let the normal bufwrite do the rest for us */ 2322 normal_write: 2323 /* 2324 * If we are writing a cylinder group, update its time. 2325 */ 2326 if ((bp->b_xflags & BX_CYLGRP) != 0) { 2327 cgp = (struct cg *)bp->b_data; 2328 cgp->cg_old_time = cgp->cg_time = time_second; 2329 } 2330 return (bufwrite(bp)); 2331 } 2332 2333 static void 2334 ffs_geom_strategy(struct bufobj *bo, struct buf *bp) 2335 { 2336 struct vnode *vp; 2337 struct buf *tbp; 2338 int error, nocopy; 2339 2340 /* 2341 * This is the bufobj strategy for the private VCHR vnodes 2342 * used by FFS to access the underlying storage device. 2343 * We override the default bufobj strategy and thus bypass 2344 * VOP_STRATEGY() for these vnodes. 2345 */ 2346 vp = bo2vnode(bo); 2347 KASSERT(bp->b_vp == NULL || bp->b_vp->v_type != VCHR || 2348 bp->b_vp->v_rdev == NULL || 2349 bp->b_vp->v_rdev->si_mountpt == NULL || 2350 VFSTOUFS(bp->b_vp->v_rdev->si_mountpt) == NULL || 2351 vp == VFSTOUFS(bp->b_vp->v_rdev->si_mountpt)->um_devvp, 2352 ("ffs_geom_strategy() with wrong vp")); 2353 if (bp->b_iocmd == BIO_WRITE) { 2354 if ((bp->b_flags & B_VALIDSUSPWRT) == 0 && 2355 bp->b_vp != NULL && bp->b_vp->v_mount != NULL && 2356 (bp->b_vp->v_mount->mnt_kern_flag & MNTK_SUSPENDED) != 0) 2357 panic("ffs_geom_strategy: bad I/O"); 2358 nocopy = bp->b_flags & B_NOCOPY; 2359 bp->b_flags &= ~(B_VALIDSUSPWRT | B_NOCOPY); 2360 if ((vp->v_vflag & VV_COPYONWRITE) && nocopy == 0 && 2361 vp->v_rdev->si_snapdata != NULL) { 2362 if ((bp->b_flags & B_CLUSTER) != 0) { 2363 runningbufwakeup(bp); 2364 TAILQ_FOREACH(tbp, &bp->b_cluster.cluster_head, 2365 b_cluster.cluster_entry) { 2366 error = ffs_copyonwrite(vp, tbp); 2367 if (error != 0 && 2368 error != EOPNOTSUPP) { 2369 bp->b_error = error; 2370 bp->b_ioflags |= BIO_ERROR; 2371 bp->b_flags &= ~B_BARRIER; 2372 bufdone(bp); 2373 return; 2374 } 2375 } 2376 (void)runningbufclaim(bp, bp->b_bufsize); 2377 } else { 2378 error = ffs_copyonwrite(vp, bp); 2379 if (error != 0 && error != EOPNOTSUPP) { 2380 bp->b_error = error; 2381 bp->b_ioflags |= BIO_ERROR; 2382 bp->b_flags &= ~B_BARRIER; 2383 bufdone(bp); 2384 return; 2385 } 2386 } 2387 } 2388 #ifdef SOFTUPDATES 2389 if ((bp->b_flags & B_CLUSTER) != 0) { 2390 TAILQ_FOREACH(tbp, &bp->b_cluster.cluster_head, 2391 b_cluster.cluster_entry) { 2392 if (!LIST_EMPTY(&tbp->b_dep)) 2393 buf_start(tbp); 2394 } 2395 } else { 2396 if (!LIST_EMPTY(&bp->b_dep)) 2397 buf_start(bp); 2398 } 2399 2400 #endif 2401 /* 2402 * Check for metadata that needs check-hashes and update them. 2403 */ 2404 switch (bp->b_xflags & BX_FSPRIV) { 2405 case BX_CYLGRP: 2406 ((struct cg *)bp->b_data)->cg_ckhash = 0; 2407 ((struct cg *)bp->b_data)->cg_ckhash = 2408 calculate_crc32c(~0L, bp->b_data, bp->b_bcount); 2409 break; 2410 2411 case BX_SUPERBLOCK: 2412 case BX_INODE: 2413 case BX_INDIR: 2414 case BX_DIR: 2415 printf("Check-hash write is unimplemented!!!\n"); 2416 break; 2417 2418 case 0: 2419 break; 2420 2421 default: 2422 printf("multiple buffer types 0x%b\n", 2423 (bp->b_xflags & BX_FSPRIV), PRINT_UFS_BUF_XFLAGS); 2424 break; 2425 } 2426 } 2427 if (bp->b_iocmd != BIO_READ && ffs_enxio_enable) 2428 bp->b_xflags |= BX_CVTENXIO; 2429 g_vfs_strategy(bo, bp); 2430 } 2431 2432 int 2433 ffs_own_mount(const struct mount *mp) 2434 { 2435 2436 if (mp->mnt_op == &ufs_vfsops) 2437 return (1); 2438 return (0); 2439 } 2440 2441 #ifdef DDB 2442 #ifdef SOFTUPDATES 2443 2444 /* defined in ffs_softdep.c */ 2445 extern void db_print_ffs(struct ufsmount *ump); 2446 2447 DB_SHOW_COMMAND(ffs, db_show_ffs) 2448 { 2449 struct mount *mp; 2450 struct ufsmount *ump; 2451 2452 if (have_addr) { 2453 ump = VFSTOUFS((struct mount *)addr); 2454 db_print_ffs(ump); 2455 return; 2456 } 2457 2458 TAILQ_FOREACH(mp, &mountlist, mnt_list) { 2459 if (!strcmp(mp->mnt_stat.f_fstypename, ufs_vfsconf.vfc_name)) 2460 db_print_ffs(VFSTOUFS(mp)); 2461 } 2462 } 2463 2464 #endif /* SOFTUPDATES */ 2465 #endif /* DDB */ 2466