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 * @(#)ffs_vfsops.c 8.31 (Berkeley) 5/20/95 32 */ 33 34 #include <sys/cdefs.h> 35 __FBSDID("$FreeBSD$"); 36 37 #include "opt_quota.h" 38 #include "opt_ufs.h" 39 #include "opt_ffs.h" 40 #include "opt_ddb.h" 41 42 #include <sys/param.h> 43 #include <sys/gsb_crc32.h> 44 #include <sys/systm.h> 45 #include <sys/namei.h> 46 #include <sys/priv.h> 47 #include <sys/proc.h> 48 #include <sys/taskqueue.h> 49 #include <sys/kernel.h> 50 #include <sys/ktr.h> 51 #include <sys/vnode.h> 52 #include <sys/mount.h> 53 #include <sys/bio.h> 54 #include <sys/buf.h> 55 #include <sys/conf.h> 56 #include <sys/fcntl.h> 57 #include <sys/ioccom.h> 58 #include <sys/malloc.h> 59 #include <sys/mutex.h> 60 #include <sys/rwlock.h> 61 #include <sys/sysctl.h> 62 #include <sys/vmmeter.h> 63 64 #include <security/mac/mac_framework.h> 65 66 #include <ufs/ufs/dir.h> 67 #include <ufs/ufs/extattr.h> 68 #include <ufs/ufs/gjournal.h> 69 #include <ufs/ufs/quota.h> 70 #include <ufs/ufs/ufsmount.h> 71 #include <ufs/ufs/inode.h> 72 #include <ufs/ufs/ufs_extern.h> 73 74 #include <ufs/ffs/fs.h> 75 #include <ufs/ffs/ffs_extern.h> 76 77 #include <vm/vm.h> 78 #include <vm/uma.h> 79 #include <vm/vm_page.h> 80 81 #include <geom/geom.h> 82 #include <geom/geom_vfs.h> 83 84 #include <ddb/ddb.h> 85 86 static uma_zone_t uma_inode, uma_ufs1, uma_ufs2; 87 88 static int ffs_mountfs(struct vnode *, struct mount *, struct thread *); 89 static void ffs_oldfscompat_read(struct fs *, struct ufsmount *, 90 ufs2_daddr_t); 91 static void ffs_ifree(struct ufsmount *ump, struct inode *ip); 92 static int ffs_sync_lazy(struct mount *mp); 93 static int ffs_use_bread(void *devfd, off_t loc, void **bufp, int size); 94 static int ffs_use_bwrite(void *devfd, off_t loc, void *buf, int size); 95 96 static vfs_init_t ffs_init; 97 static vfs_uninit_t ffs_uninit; 98 static vfs_extattrctl_t ffs_extattrctl; 99 static vfs_cmount_t ffs_cmount; 100 static vfs_unmount_t ffs_unmount; 101 static vfs_mount_t ffs_mount; 102 static vfs_statfs_t ffs_statfs; 103 static vfs_fhtovp_t ffs_fhtovp; 104 static vfs_sync_t ffs_sync; 105 106 static struct vfsops ufs_vfsops = { 107 .vfs_extattrctl = ffs_extattrctl, 108 .vfs_fhtovp = ffs_fhtovp, 109 .vfs_init = ffs_init, 110 .vfs_mount = ffs_mount, 111 .vfs_cmount = ffs_cmount, 112 .vfs_quotactl = ufs_quotactl, 113 .vfs_root = vfs_cache_root, 114 .vfs_cachedroot = ufs_root, 115 .vfs_statfs = ffs_statfs, 116 .vfs_sync = ffs_sync, 117 .vfs_uninit = ffs_uninit, 118 .vfs_unmount = ffs_unmount, 119 .vfs_vget = ffs_vget, 120 .vfs_susp_clean = process_deferred_inactive, 121 }; 122 123 VFS_SET(ufs_vfsops, ufs, 0); 124 MODULE_VERSION(ufs, 1); 125 126 static b_strategy_t ffs_geom_strategy; 127 static b_write_t ffs_bufwrite; 128 129 static struct buf_ops ffs_ops = { 130 .bop_name = "FFS", 131 .bop_write = ffs_bufwrite, 132 .bop_strategy = ffs_geom_strategy, 133 .bop_sync = bufsync, 134 #ifdef NO_FFS_SNAPSHOT 135 .bop_bdflush = bufbdflush, 136 #else 137 .bop_bdflush = ffs_bdflush, 138 #endif 139 }; 140 141 /* 142 * Note that userquota and groupquota options are not currently used 143 * by UFS/FFS code and generally mount(8) does not pass those options 144 * from userland, but they can be passed by loader(8) via 145 * vfs.root.mountfrom.options. 146 */ 147 static const char *ffs_opts[] = { "acls", "async", "noatime", "noclusterr", 148 "noclusterw", "noexec", "export", "force", "from", "groupquota", 149 "multilabel", "nfsv4acls", "fsckpid", "snapshot", "nosuid", "suiddir", 150 "nosymfollow", "sync", "union", "userquota", "untrusted", NULL }; 151 152 static int ffs_enxio_enable = 1; 153 SYSCTL_DECL(_vfs_ffs); 154 SYSCTL_INT(_vfs_ffs, OID_AUTO, enxio_enable, CTLFLAG_RWTUN, 155 &ffs_enxio_enable, 0, 156 "enable mapping of other disk I/O errors to ENXIO"); 157 158 static int 159 ffs_mount(struct mount *mp) 160 { 161 struct vnode *devvp, *odevvp; 162 struct thread *td; 163 struct ufsmount *ump = NULL; 164 struct fs *fs; 165 pid_t fsckpid = 0; 166 int error, error1, flags; 167 uint64_t mntorflags, saved_mnt_flag; 168 accmode_t accmode; 169 struct nameidata ndp; 170 char *fspec; 171 172 td = curthread; 173 if (vfs_filteropt(mp->mnt_optnew, ffs_opts)) 174 return (EINVAL); 175 if (uma_inode == NULL) { 176 uma_inode = uma_zcreate("FFS inode", 177 sizeof(struct inode), NULL, NULL, NULL, NULL, 178 UMA_ALIGN_PTR, 0); 179 uma_ufs1 = uma_zcreate("FFS1 dinode", 180 sizeof(struct ufs1_dinode), NULL, NULL, NULL, NULL, 181 UMA_ALIGN_PTR, 0); 182 uma_ufs2 = uma_zcreate("FFS2 dinode", 183 sizeof(struct ufs2_dinode), NULL, NULL, NULL, NULL, 184 UMA_ALIGN_PTR, 0); 185 } 186 187 vfs_deleteopt(mp->mnt_optnew, "groupquota"); 188 vfs_deleteopt(mp->mnt_optnew, "userquota"); 189 190 fspec = vfs_getopts(mp->mnt_optnew, "from", &error); 191 if (error) 192 return (error); 193 194 mntorflags = 0; 195 if (vfs_getopt(mp->mnt_optnew, "untrusted", NULL, NULL) == 0) 196 mntorflags |= MNT_UNTRUSTED; 197 198 if (vfs_getopt(mp->mnt_optnew, "acls", NULL, NULL) == 0) 199 mntorflags |= MNT_ACLS; 200 201 if (vfs_getopt(mp->mnt_optnew, "snapshot", NULL, NULL) == 0) { 202 mntorflags |= MNT_SNAPSHOT; 203 /* 204 * Once we have set the MNT_SNAPSHOT flag, do not 205 * persist "snapshot" in the options list. 206 */ 207 vfs_deleteopt(mp->mnt_optnew, "snapshot"); 208 vfs_deleteopt(mp->mnt_opt, "snapshot"); 209 } 210 211 if (vfs_getopt(mp->mnt_optnew, "fsckpid", NULL, NULL) == 0 && 212 vfs_scanopt(mp->mnt_optnew, "fsckpid", "%d", &fsckpid) == 1) { 213 /* 214 * Once we have set the restricted PID, do not 215 * persist "fsckpid" in the options list. 216 */ 217 vfs_deleteopt(mp->mnt_optnew, "fsckpid"); 218 vfs_deleteopt(mp->mnt_opt, "fsckpid"); 219 if (mp->mnt_flag & MNT_UPDATE) { 220 if (VFSTOUFS(mp)->um_fs->fs_ronly == 0 && 221 vfs_flagopt(mp->mnt_optnew, "ro", NULL, 0) == 0) { 222 vfs_mount_error(mp, 223 "Checker enable: Must be read-only"); 224 return (EINVAL); 225 } 226 } else if (vfs_flagopt(mp->mnt_optnew, "ro", NULL, 0) == 0) { 227 vfs_mount_error(mp, 228 "Checker enable: Must be read-only"); 229 return (EINVAL); 230 } 231 /* Set to -1 if we are done */ 232 if (fsckpid == 0) 233 fsckpid = -1; 234 } 235 236 if (vfs_getopt(mp->mnt_optnew, "nfsv4acls", NULL, NULL) == 0) { 237 if (mntorflags & MNT_ACLS) { 238 vfs_mount_error(mp, 239 "\"acls\" and \"nfsv4acls\" options " 240 "are mutually exclusive"); 241 return (EINVAL); 242 } 243 mntorflags |= MNT_NFS4ACLS; 244 } 245 246 MNT_ILOCK(mp); 247 mp->mnt_flag |= mntorflags; 248 MNT_IUNLOCK(mp); 249 /* 250 * If updating, check whether changing from read-only to 251 * read/write; if there is no device name, that's all we do. 252 */ 253 if (mp->mnt_flag & MNT_UPDATE) { 254 ump = VFSTOUFS(mp); 255 fs = ump->um_fs; 256 odevvp = ump->um_odevvp; 257 devvp = ump->um_devvp; 258 if (fsckpid == -1 && ump->um_fsckpid > 0) { 259 if ((error = ffs_flushfiles(mp, WRITECLOSE, td)) != 0 || 260 (error = ffs_sbupdate(ump, MNT_WAIT, 0)) != 0) 261 return (error); 262 g_topology_lock(); 263 /* 264 * Return to normal read-only mode. 265 */ 266 error = g_access(ump->um_cp, 0, -1, 0); 267 g_topology_unlock(); 268 ump->um_fsckpid = 0; 269 } 270 if (fs->fs_ronly == 0 && 271 vfs_flagopt(mp->mnt_optnew, "ro", NULL, 0)) { 272 /* 273 * Flush any dirty data and suspend filesystem. 274 */ 275 if ((error = vn_start_write(NULL, &mp, V_WAIT)) != 0) 276 return (error); 277 error = vfs_write_suspend_umnt(mp); 278 if (error != 0) 279 return (error); 280 /* 281 * Check for and optionally get rid of files open 282 * for writing. 283 */ 284 flags = WRITECLOSE; 285 if (mp->mnt_flag & MNT_FORCE) 286 flags |= FORCECLOSE; 287 if (MOUNTEDSOFTDEP(mp)) { 288 error = softdep_flushfiles(mp, flags, td); 289 } else { 290 error = ffs_flushfiles(mp, flags, td); 291 } 292 if (error) { 293 vfs_write_resume(mp, 0); 294 return (error); 295 } 296 if (fs->fs_pendingblocks != 0 || 297 fs->fs_pendinginodes != 0) { 298 printf("WARNING: %s Update error: blocks %jd " 299 "files %d\n", fs->fs_fsmnt, 300 (intmax_t)fs->fs_pendingblocks, 301 fs->fs_pendinginodes); 302 fs->fs_pendingblocks = 0; 303 fs->fs_pendinginodes = 0; 304 } 305 if ((fs->fs_flags & (FS_UNCLEAN | FS_NEEDSFSCK)) == 0) 306 fs->fs_clean = 1; 307 if ((error = ffs_sbupdate(ump, MNT_WAIT, 0)) != 0) { 308 fs->fs_ronly = 0; 309 fs->fs_clean = 0; 310 vfs_write_resume(mp, 0); 311 return (error); 312 } 313 if (MOUNTEDSOFTDEP(mp)) 314 softdep_unmount(mp); 315 g_topology_lock(); 316 /* 317 * Drop our write and exclusive access. 318 */ 319 g_access(ump->um_cp, 0, -1, -1); 320 g_topology_unlock(); 321 fs->fs_ronly = 1; 322 MNT_ILOCK(mp); 323 mp->mnt_flag |= MNT_RDONLY; 324 MNT_IUNLOCK(mp); 325 /* 326 * Allow the writers to note that filesystem 327 * is ro now. 328 */ 329 vfs_write_resume(mp, 0); 330 } 331 if ((mp->mnt_flag & MNT_RELOAD) && 332 (error = ffs_reload(mp, td, 0)) != 0) 333 return (error); 334 if (fs->fs_ronly && 335 !vfs_flagopt(mp->mnt_optnew, "ro", NULL, 0)) { 336 /* 337 * If we are running a checker, do not allow upgrade. 338 */ 339 if (ump->um_fsckpid > 0) { 340 vfs_mount_error(mp, 341 "Active checker, cannot upgrade to write"); 342 return (EINVAL); 343 } 344 /* 345 * If upgrade to read-write by non-root, then verify 346 * that user has necessary permissions on the device. 347 */ 348 vn_lock(odevvp, LK_EXCLUSIVE | LK_RETRY); 349 error = VOP_ACCESS(odevvp, VREAD | VWRITE, 350 td->td_ucred, td); 351 if (error) 352 error = priv_check(td, PRIV_VFS_MOUNT_PERM); 353 VOP_UNLOCK(odevvp); 354 if (error) { 355 return (error); 356 } 357 fs->fs_flags &= ~FS_UNCLEAN; 358 if (fs->fs_clean == 0) { 359 fs->fs_flags |= FS_UNCLEAN; 360 if ((mp->mnt_flag & MNT_FORCE) || 361 ((fs->fs_flags & 362 (FS_SUJ | FS_NEEDSFSCK)) == 0 && 363 (fs->fs_flags & FS_DOSOFTDEP))) { 364 printf("WARNING: %s was not properly " 365 "dismounted\n", fs->fs_fsmnt); 366 } else { 367 vfs_mount_error(mp, 368 "R/W mount of %s denied. %s.%s", 369 fs->fs_fsmnt, 370 "Filesystem is not clean - run fsck", 371 (fs->fs_flags & FS_SUJ) == 0 ? "" : 372 " Forced mount will invalidate" 373 " journal contents"); 374 return (EPERM); 375 } 376 } 377 g_topology_lock(); 378 /* 379 * Request exclusive write access. 380 */ 381 error = g_access(ump->um_cp, 0, 1, 1); 382 g_topology_unlock(); 383 if (error) 384 return (error); 385 if ((error = vn_start_write(NULL, &mp, V_WAIT)) != 0) 386 return (error); 387 error = vfs_write_suspend_umnt(mp); 388 if (error != 0) 389 return (error); 390 fs->fs_ronly = 0; 391 MNT_ILOCK(mp); 392 saved_mnt_flag = MNT_RDONLY; 393 if (MOUNTEDSOFTDEP(mp) && (mp->mnt_flag & 394 MNT_ASYNC) != 0) 395 saved_mnt_flag |= MNT_ASYNC; 396 mp->mnt_flag &= ~saved_mnt_flag; 397 MNT_IUNLOCK(mp); 398 fs->fs_mtime = time_second; 399 /* check to see if we need to start softdep */ 400 if ((fs->fs_flags & FS_DOSOFTDEP) && 401 (error = softdep_mount(devvp, mp, fs, td->td_ucred))){ 402 fs->fs_ronly = 1; 403 MNT_ILOCK(mp); 404 mp->mnt_flag |= saved_mnt_flag; 405 MNT_IUNLOCK(mp); 406 vfs_write_resume(mp, 0); 407 return (error); 408 } 409 fs->fs_clean = 0; 410 if ((error = ffs_sbupdate(ump, MNT_WAIT, 0)) != 0) { 411 fs->fs_ronly = 1; 412 MNT_ILOCK(mp); 413 mp->mnt_flag |= saved_mnt_flag; 414 MNT_IUNLOCK(mp); 415 vfs_write_resume(mp, 0); 416 return (error); 417 } 418 if (fs->fs_snapinum[0] != 0) 419 ffs_snapshot_mount(mp); 420 vfs_write_resume(mp, 0); 421 } 422 /* 423 * Soft updates is incompatible with "async", 424 * so if we are doing softupdates stop the user 425 * from setting the async flag in an update. 426 * Softdep_mount() clears it in an initial mount 427 * or ro->rw remount. 428 */ 429 if (MOUNTEDSOFTDEP(mp)) { 430 /* XXX: Reset too late ? */ 431 MNT_ILOCK(mp); 432 mp->mnt_flag &= ~MNT_ASYNC; 433 MNT_IUNLOCK(mp); 434 } 435 /* 436 * Keep MNT_ACLS flag if it is stored in superblock. 437 */ 438 if ((fs->fs_flags & FS_ACLS) != 0) { 439 /* XXX: Set too late ? */ 440 MNT_ILOCK(mp); 441 mp->mnt_flag |= MNT_ACLS; 442 MNT_IUNLOCK(mp); 443 } 444 445 if ((fs->fs_flags & FS_NFS4ACLS) != 0) { 446 /* XXX: Set too late ? */ 447 MNT_ILOCK(mp); 448 mp->mnt_flag |= MNT_NFS4ACLS; 449 MNT_IUNLOCK(mp); 450 } 451 /* 452 * If this is a request from fsck to clean up the filesystem, 453 * then allow the specified pid to proceed. 454 */ 455 if (fsckpid > 0) { 456 if (ump->um_fsckpid != 0) { 457 vfs_mount_error(mp, 458 "Active checker already running on %s", 459 fs->fs_fsmnt); 460 return (EINVAL); 461 } 462 KASSERT(MOUNTEDSOFTDEP(mp) == 0, 463 ("soft updates enabled on read-only file system")); 464 g_topology_lock(); 465 /* 466 * Request write access. 467 */ 468 error = g_access(ump->um_cp, 0, 1, 0); 469 g_topology_unlock(); 470 if (error) { 471 vfs_mount_error(mp, 472 "Checker activation failed on %s", 473 fs->fs_fsmnt); 474 return (error); 475 } 476 ump->um_fsckpid = fsckpid; 477 if (fs->fs_snapinum[0] != 0) 478 ffs_snapshot_mount(mp); 479 fs->fs_mtime = time_second; 480 fs->fs_fmod = 1; 481 fs->fs_clean = 0; 482 (void) ffs_sbupdate(ump, MNT_WAIT, 0); 483 } 484 485 /* 486 * If this is a snapshot request, take the snapshot. 487 */ 488 if (mp->mnt_flag & MNT_SNAPSHOT) 489 return (ffs_snapshot(mp, fspec)); 490 491 /* 492 * Must not call namei() while owning busy ref. 493 */ 494 vfs_unbusy(mp); 495 } 496 497 /* 498 * Not an update, or updating the name: look up the name 499 * and verify that it refers to a sensible disk device. 500 */ 501 NDINIT(&ndp, LOOKUP, FOLLOW | LOCKLEAF, UIO_SYSSPACE, fspec, td); 502 error = namei(&ndp); 503 if ((mp->mnt_flag & MNT_UPDATE) != 0) { 504 /* 505 * Unmount does not start if MNT_UPDATE is set. Mount 506 * update busies mp before setting MNT_UPDATE. We 507 * must be able to retain our busy ref succesfully, 508 * without sleep. 509 */ 510 error1 = vfs_busy(mp, MBF_NOWAIT); 511 MPASS(error1 == 0); 512 } 513 if (error != 0) 514 return (error); 515 NDFREE(&ndp, NDF_ONLY_PNBUF); 516 devvp = ndp.ni_vp; 517 if (!vn_isdisk(devvp, &error)) { 518 vput(devvp); 519 return (error); 520 } 521 522 /* 523 * If mount by non-root, then verify that user has necessary 524 * permissions on the device. 525 */ 526 accmode = VREAD; 527 if ((mp->mnt_flag & MNT_RDONLY) == 0) 528 accmode |= VWRITE; 529 error = VOP_ACCESS(devvp, accmode, td->td_ucred, td); 530 if (error) 531 error = priv_check(td, PRIV_VFS_MOUNT_PERM); 532 if (error) { 533 vput(devvp); 534 return (error); 535 } 536 537 if (mp->mnt_flag & MNT_UPDATE) { 538 /* 539 * Update only 540 * 541 * If it's not the same vnode, or at least the same device 542 * then it's not correct. 543 */ 544 545 if (devvp->v_rdev != ump->um_devvp->v_rdev) 546 error = EINVAL; /* needs translation */ 547 vput(devvp); 548 if (error) 549 return (error); 550 } else { 551 /* 552 * New mount 553 * 554 * We need the name for the mount point (also used for 555 * "last mounted on") copied in. If an error occurs, 556 * the mount point is discarded by the upper level code. 557 * Note that vfs_mount_alloc() populates f_mntonname for us. 558 */ 559 if ((error = ffs_mountfs(devvp, mp, td)) != 0) { 560 vrele(devvp); 561 return (error); 562 } 563 if (fsckpid > 0) { 564 KASSERT(MOUNTEDSOFTDEP(mp) == 0, 565 ("soft updates enabled on read-only file system")); 566 ump = VFSTOUFS(mp); 567 fs = ump->um_fs; 568 g_topology_lock(); 569 /* 570 * Request write access. 571 */ 572 error = g_access(ump->um_cp, 0, 1, 0); 573 g_topology_unlock(); 574 if (error) { 575 printf("WARNING: %s: Checker activation " 576 "failed\n", fs->fs_fsmnt); 577 } else { 578 ump->um_fsckpid = fsckpid; 579 if (fs->fs_snapinum[0] != 0) 580 ffs_snapshot_mount(mp); 581 fs->fs_mtime = time_second; 582 fs->fs_clean = 0; 583 (void) ffs_sbupdate(ump, MNT_WAIT, 0); 584 } 585 } 586 } 587 vfs_mountedfrom(mp, fspec); 588 return (0); 589 } 590 591 /* 592 * Compatibility with old mount system call. 593 */ 594 595 static int 596 ffs_cmount(struct mntarg *ma, void *data, uint64_t flags) 597 { 598 struct ufs_args args; 599 int error; 600 601 if (data == NULL) 602 return (EINVAL); 603 error = copyin(data, &args, sizeof args); 604 if (error) 605 return (error); 606 607 ma = mount_argsu(ma, "from", args.fspec, MAXPATHLEN); 608 ma = mount_arg(ma, "export", &args.export, sizeof(args.export)); 609 error = kernel_mount(ma, flags); 610 611 return (error); 612 } 613 614 /* 615 * Reload all incore data for a filesystem (used after running fsck on 616 * the root filesystem and finding things to fix). If the 'force' flag 617 * is 0, the filesystem must be mounted read-only. 618 * 619 * Things to do to update the mount: 620 * 1) invalidate all cached meta-data. 621 * 2) re-read superblock from disk. 622 * 3) re-read summary information from disk. 623 * 4) invalidate all inactive vnodes. 624 * 5) clear MNTK_SUSPEND2 and MNTK_SUSPENDED flags, allowing secondary 625 * writers, if requested. 626 * 6) invalidate all cached file data. 627 * 7) re-read inode data for all active vnodes. 628 */ 629 int 630 ffs_reload(struct mount *mp, struct thread *td, int flags) 631 { 632 struct vnode *vp, *mvp, *devvp; 633 struct inode *ip; 634 void *space; 635 struct buf *bp; 636 struct fs *fs, *newfs; 637 struct ufsmount *ump; 638 ufs2_daddr_t sblockloc; 639 int i, blks, error; 640 u_long size; 641 int32_t *lp; 642 643 ump = VFSTOUFS(mp); 644 645 MNT_ILOCK(mp); 646 if ((mp->mnt_flag & MNT_RDONLY) == 0 && (flags & FFSR_FORCE) == 0) { 647 MNT_IUNLOCK(mp); 648 return (EINVAL); 649 } 650 MNT_IUNLOCK(mp); 651 652 /* 653 * Step 1: invalidate all cached meta-data. 654 */ 655 devvp = VFSTOUFS(mp)->um_devvp; 656 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 657 if (vinvalbuf(devvp, 0, 0, 0) != 0) 658 panic("ffs_reload: dirty1"); 659 VOP_UNLOCK(devvp); 660 661 /* 662 * Step 2: re-read superblock from disk. 663 */ 664 fs = VFSTOUFS(mp)->um_fs; 665 if ((error = bread(devvp, btodb(fs->fs_sblockloc), fs->fs_sbsize, 666 NOCRED, &bp)) != 0) 667 return (error); 668 newfs = (struct fs *)bp->b_data; 669 if ((newfs->fs_magic != FS_UFS1_MAGIC && 670 newfs->fs_magic != FS_UFS2_MAGIC) || 671 newfs->fs_bsize > MAXBSIZE || 672 newfs->fs_bsize < sizeof(struct fs)) { 673 brelse(bp); 674 return (EIO); /* XXX needs translation */ 675 } 676 /* 677 * Copy pointer fields back into superblock before copying in XXX 678 * new superblock. These should really be in the ufsmount. XXX 679 * Note that important parameters (eg fs_ncg) are unchanged. 680 */ 681 newfs->fs_csp = fs->fs_csp; 682 newfs->fs_maxcluster = fs->fs_maxcluster; 683 newfs->fs_contigdirs = fs->fs_contigdirs; 684 newfs->fs_active = fs->fs_active; 685 newfs->fs_ronly = fs->fs_ronly; 686 sblockloc = fs->fs_sblockloc; 687 bcopy(newfs, fs, (u_int)fs->fs_sbsize); 688 brelse(bp); 689 mp->mnt_maxsymlinklen = fs->fs_maxsymlinklen; 690 ffs_oldfscompat_read(fs, VFSTOUFS(mp), sblockloc); 691 UFS_LOCK(ump); 692 if (fs->fs_pendingblocks != 0 || fs->fs_pendinginodes != 0) { 693 printf("WARNING: %s: reload pending error: blocks %jd " 694 "files %d\n", fs->fs_fsmnt, (intmax_t)fs->fs_pendingblocks, 695 fs->fs_pendinginodes); 696 fs->fs_pendingblocks = 0; 697 fs->fs_pendinginodes = 0; 698 } 699 UFS_UNLOCK(ump); 700 701 /* 702 * Step 3: re-read summary information from disk. 703 */ 704 size = fs->fs_cssize; 705 blks = howmany(size, fs->fs_fsize); 706 if (fs->fs_contigsumsize > 0) 707 size += fs->fs_ncg * sizeof(int32_t); 708 size += fs->fs_ncg * sizeof(u_int8_t); 709 free(fs->fs_csp, M_UFSMNT); 710 space = malloc(size, M_UFSMNT, M_WAITOK); 711 fs->fs_csp = space; 712 for (i = 0; i < blks; i += fs->fs_frag) { 713 size = fs->fs_bsize; 714 if (i + fs->fs_frag > blks) 715 size = (blks - i) * fs->fs_fsize; 716 error = bread(devvp, fsbtodb(fs, fs->fs_csaddr + i), size, 717 NOCRED, &bp); 718 if (error) 719 return (error); 720 bcopy(bp->b_data, space, (u_int)size); 721 space = (char *)space + size; 722 brelse(bp); 723 } 724 /* 725 * We no longer know anything about clusters per cylinder group. 726 */ 727 if (fs->fs_contigsumsize > 0) { 728 fs->fs_maxcluster = lp = space; 729 for (i = 0; i < fs->fs_ncg; i++) 730 *lp++ = fs->fs_contigsumsize; 731 space = lp; 732 } 733 size = fs->fs_ncg * sizeof(u_int8_t); 734 fs->fs_contigdirs = (u_int8_t *)space; 735 bzero(fs->fs_contigdirs, size); 736 if ((flags & FFSR_UNSUSPEND) != 0) { 737 MNT_ILOCK(mp); 738 mp->mnt_kern_flag &= ~(MNTK_SUSPENDED | MNTK_SUSPEND2); 739 wakeup(&mp->mnt_flag); 740 MNT_IUNLOCK(mp); 741 } 742 743 loop: 744 MNT_VNODE_FOREACH_ALL(vp, mp, mvp) { 745 /* 746 * Skip syncer vnode. 747 */ 748 if (vp->v_type == VNON) { 749 VI_UNLOCK(vp); 750 continue; 751 } 752 /* 753 * Step 4: invalidate all cached file data. 754 */ 755 if (vget(vp, LK_EXCLUSIVE | LK_INTERLOCK, td)) { 756 MNT_VNODE_FOREACH_ALL_ABORT(mp, mvp); 757 goto loop; 758 } 759 if (vinvalbuf(vp, 0, 0, 0)) 760 panic("ffs_reload: dirty2"); 761 /* 762 * Step 5: re-read inode data for all active vnodes. 763 */ 764 ip = VTOI(vp); 765 error = 766 bread(devvp, fsbtodb(fs, ino_to_fsba(fs, ip->i_number)), 767 (int)fs->fs_bsize, NOCRED, &bp); 768 if (error) { 769 vput(vp); 770 MNT_VNODE_FOREACH_ALL_ABORT(mp, mvp); 771 return (error); 772 } 773 if ((error = ffs_load_inode(bp, ip, fs, ip->i_number)) != 0) { 774 brelse(bp); 775 vput(vp); 776 MNT_VNODE_FOREACH_ALL_ABORT(mp, mvp); 777 return (error); 778 } 779 ip->i_effnlink = ip->i_nlink; 780 brelse(bp); 781 vput(vp); 782 } 783 return (0); 784 } 785 786 /* 787 * Common code for mount and mountroot 788 */ 789 static int 790 ffs_mountfs(odevvp, mp, td) 791 struct vnode *odevvp; 792 struct mount *mp; 793 struct thread *td; 794 { 795 struct ufsmount *ump; 796 struct fs *fs; 797 struct cdev *dev; 798 int error, i, len, ronly; 799 struct ucred *cred; 800 struct g_consumer *cp; 801 struct mount *nmp; 802 struct vnode *devvp; 803 struct fsfail_task *etp; 804 int candelete, canspeedup; 805 off_t loc; 806 807 fs = NULL; 808 ump = NULL; 809 cred = td ? td->td_ucred : NOCRED; 810 ronly = (mp->mnt_flag & MNT_RDONLY) != 0; 811 812 devvp = mntfs_allocvp(mp, odevvp); 813 VOP_UNLOCK(odevvp); 814 KASSERT(devvp->v_type == VCHR, ("reclaimed devvp")); 815 dev = devvp->v_rdev; 816 if (atomic_cmpset_acq_ptr((uintptr_t *)&dev->si_mountpt, 0, 817 (uintptr_t)mp) == 0) { 818 mntfs_freevp(devvp); 819 return (EBUSY); 820 } 821 g_topology_lock(); 822 error = g_vfs_open(devvp, &cp, "ffs", ronly ? 0 : 1); 823 g_topology_unlock(); 824 if (error != 0) { 825 atomic_store_rel_ptr((uintptr_t *)&dev->si_mountpt, 0); 826 mntfs_freevp(devvp); 827 return (error); 828 } 829 dev_ref(dev); 830 devvp->v_bufobj.bo_ops = &ffs_ops; 831 BO_LOCK(&odevvp->v_bufobj); 832 odevvp->v_bufobj.bo_flag |= BO_NOBUFS; 833 BO_UNLOCK(&odevvp->v_bufobj); 834 if (dev->si_iosize_max != 0) 835 mp->mnt_iosize_max = dev->si_iosize_max; 836 if (mp->mnt_iosize_max > MAXPHYS) 837 mp->mnt_iosize_max = MAXPHYS; 838 if ((SBLOCKSIZE % cp->provider->sectorsize) != 0) { 839 error = EINVAL; 840 vfs_mount_error(mp, 841 "Invalid sectorsize %d for superblock size %d", 842 cp->provider->sectorsize, SBLOCKSIZE); 843 goto out; 844 } 845 /* fetch the superblock and summary information */ 846 loc = STDSB; 847 if ((mp->mnt_flag & MNT_ROOTFS) != 0) 848 loc = STDSB_NOHASHFAIL; 849 if ((error = ffs_sbget(devvp, &fs, loc, M_UFSMNT, ffs_use_bread)) != 0) 850 goto out; 851 /* none of these types of check-hashes are maintained by this kernel */ 852 fs->fs_metackhash &= ~(CK_INDIR | CK_DIR); 853 /* no support for any undefined flags */ 854 fs->fs_flags &= FS_SUPPORTED; 855 fs->fs_flags &= ~FS_UNCLEAN; 856 if (fs->fs_clean == 0) { 857 fs->fs_flags |= FS_UNCLEAN; 858 if (ronly || (mp->mnt_flag & MNT_FORCE) || 859 ((fs->fs_flags & (FS_SUJ | FS_NEEDSFSCK)) == 0 && 860 (fs->fs_flags & FS_DOSOFTDEP))) { 861 printf("WARNING: %s was not properly dismounted\n", 862 fs->fs_fsmnt); 863 } else { 864 vfs_mount_error(mp, "R/W mount of %s denied. %s%s", 865 fs->fs_fsmnt, "Filesystem is not clean - run fsck.", 866 (fs->fs_flags & FS_SUJ) == 0 ? "" : 867 " Forced mount will invalidate journal contents"); 868 error = EPERM; 869 goto out; 870 } 871 if ((fs->fs_pendingblocks != 0 || fs->fs_pendinginodes != 0) && 872 (mp->mnt_flag & MNT_FORCE)) { 873 printf("WARNING: %s: lost blocks %jd files %d\n", 874 fs->fs_fsmnt, (intmax_t)fs->fs_pendingblocks, 875 fs->fs_pendinginodes); 876 fs->fs_pendingblocks = 0; 877 fs->fs_pendinginodes = 0; 878 } 879 } 880 if (fs->fs_pendingblocks != 0 || fs->fs_pendinginodes != 0) { 881 printf("WARNING: %s: mount pending error: blocks %jd " 882 "files %d\n", fs->fs_fsmnt, (intmax_t)fs->fs_pendingblocks, 883 fs->fs_pendinginodes); 884 fs->fs_pendingblocks = 0; 885 fs->fs_pendinginodes = 0; 886 } 887 if ((fs->fs_flags & FS_GJOURNAL) != 0) { 888 #ifdef UFS_GJOURNAL 889 /* 890 * Get journal provider name. 891 */ 892 len = 1024; 893 mp->mnt_gjprovider = malloc((u_long)len, M_UFSMNT, M_WAITOK); 894 if (g_io_getattr("GJOURNAL::provider", cp, &len, 895 mp->mnt_gjprovider) == 0) { 896 mp->mnt_gjprovider = realloc(mp->mnt_gjprovider, len, 897 M_UFSMNT, M_WAITOK); 898 MNT_ILOCK(mp); 899 mp->mnt_flag |= MNT_GJOURNAL; 900 MNT_IUNLOCK(mp); 901 } else { 902 printf("WARNING: %s: GJOURNAL flag on fs " 903 "but no gjournal provider below\n", 904 mp->mnt_stat.f_mntonname); 905 free(mp->mnt_gjprovider, M_UFSMNT); 906 mp->mnt_gjprovider = NULL; 907 } 908 #else 909 printf("WARNING: %s: GJOURNAL flag on fs but no " 910 "UFS_GJOURNAL support\n", mp->mnt_stat.f_mntonname); 911 #endif 912 } else { 913 mp->mnt_gjprovider = NULL; 914 } 915 ump = malloc(sizeof *ump, M_UFSMNT, M_WAITOK | M_ZERO); 916 ump->um_cp = cp; 917 ump->um_bo = &devvp->v_bufobj; 918 ump->um_fs = fs; 919 if (fs->fs_magic == FS_UFS1_MAGIC) { 920 ump->um_fstype = UFS1; 921 ump->um_balloc = ffs_balloc_ufs1; 922 } else { 923 ump->um_fstype = UFS2; 924 ump->um_balloc = ffs_balloc_ufs2; 925 } 926 ump->um_blkatoff = ffs_blkatoff; 927 ump->um_truncate = ffs_truncate; 928 ump->um_update = ffs_update; 929 ump->um_valloc = ffs_valloc; 930 ump->um_vfree = ffs_vfree; 931 ump->um_ifree = ffs_ifree; 932 ump->um_rdonly = ffs_rdonly; 933 ump->um_snapgone = ffs_snapgone; 934 if ((mp->mnt_flag & MNT_UNTRUSTED) != 0) 935 ump->um_check_blkno = ffs_check_blkno; 936 else 937 ump->um_check_blkno = NULL; 938 mtx_init(UFS_MTX(ump), "FFS", "FFS Lock", MTX_DEF); 939 ffs_oldfscompat_read(fs, ump, fs->fs_sblockloc); 940 fs->fs_ronly = ronly; 941 fs->fs_active = NULL; 942 mp->mnt_data = ump; 943 mp->mnt_stat.f_fsid.val[0] = fs->fs_id[0]; 944 mp->mnt_stat.f_fsid.val[1] = fs->fs_id[1]; 945 nmp = NULL; 946 if (fs->fs_id[0] == 0 || fs->fs_id[1] == 0 || 947 (nmp = vfs_getvfs(&mp->mnt_stat.f_fsid))) { 948 if (nmp) 949 vfs_rel(nmp); 950 vfs_getnewfsid(mp); 951 } 952 mp->mnt_maxsymlinklen = fs->fs_maxsymlinklen; 953 MNT_ILOCK(mp); 954 mp->mnt_flag |= MNT_LOCAL; 955 MNT_IUNLOCK(mp); 956 if ((fs->fs_flags & FS_MULTILABEL) != 0) { 957 #ifdef MAC 958 MNT_ILOCK(mp); 959 mp->mnt_flag |= MNT_MULTILABEL; 960 MNT_IUNLOCK(mp); 961 #else 962 printf("WARNING: %s: multilabel flag on fs but " 963 "no MAC support\n", mp->mnt_stat.f_mntonname); 964 #endif 965 } 966 if ((fs->fs_flags & FS_ACLS) != 0) { 967 #ifdef UFS_ACL 968 MNT_ILOCK(mp); 969 970 if (mp->mnt_flag & MNT_NFS4ACLS) 971 printf("WARNING: %s: ACLs flag on fs conflicts with " 972 "\"nfsv4acls\" mount option; option ignored\n", 973 mp->mnt_stat.f_mntonname); 974 mp->mnt_flag &= ~MNT_NFS4ACLS; 975 mp->mnt_flag |= MNT_ACLS; 976 977 MNT_IUNLOCK(mp); 978 #else 979 printf("WARNING: %s: ACLs flag on fs but no ACLs support\n", 980 mp->mnt_stat.f_mntonname); 981 #endif 982 } 983 if ((fs->fs_flags & FS_NFS4ACLS) != 0) { 984 #ifdef UFS_ACL 985 MNT_ILOCK(mp); 986 987 if (mp->mnt_flag & MNT_ACLS) 988 printf("WARNING: %s: NFSv4 ACLs flag on fs conflicts " 989 "with \"acls\" mount option; option ignored\n", 990 mp->mnt_stat.f_mntonname); 991 mp->mnt_flag &= ~MNT_ACLS; 992 mp->mnt_flag |= MNT_NFS4ACLS; 993 994 MNT_IUNLOCK(mp); 995 #else 996 printf("WARNING: %s: NFSv4 ACLs flag on fs but no " 997 "ACLs support\n", mp->mnt_stat.f_mntonname); 998 #endif 999 } 1000 if ((fs->fs_flags & FS_TRIM) != 0) { 1001 len = sizeof(int); 1002 if (g_io_getattr("GEOM::candelete", cp, &len, 1003 &candelete) == 0) { 1004 if (candelete) 1005 ump->um_flags |= UM_CANDELETE; 1006 else 1007 printf("WARNING: %s: TRIM flag on fs but disk " 1008 "does not support TRIM\n", 1009 mp->mnt_stat.f_mntonname); 1010 } else { 1011 printf("WARNING: %s: TRIM flag on fs but disk does " 1012 "not confirm that it supports TRIM\n", 1013 mp->mnt_stat.f_mntonname); 1014 } 1015 if (((ump->um_flags) & UM_CANDELETE) != 0) { 1016 ump->um_trim_tq = taskqueue_create("trim", M_WAITOK, 1017 taskqueue_thread_enqueue, &ump->um_trim_tq); 1018 taskqueue_start_threads(&ump->um_trim_tq, 1, PVFS, 1019 "%s trim", mp->mnt_stat.f_mntonname); 1020 ump->um_trimhash = hashinit(MAXTRIMIO, M_TRIM, 1021 &ump->um_trimlisthashsize); 1022 } 1023 } 1024 1025 len = sizeof(int); 1026 if (g_io_getattr("GEOM::canspeedup", cp, &len, &canspeedup) == 0) { 1027 if (canspeedup) 1028 ump->um_flags |= UM_CANSPEEDUP; 1029 } 1030 1031 ump->um_mountp = mp; 1032 ump->um_dev = dev; 1033 ump->um_devvp = devvp; 1034 ump->um_odevvp = odevvp; 1035 ump->um_nindir = fs->fs_nindir; 1036 ump->um_bptrtodb = fs->fs_fsbtodb; 1037 ump->um_seqinc = fs->fs_frag; 1038 for (i = 0; i < MAXQUOTAS; i++) 1039 ump->um_quotas[i] = NULLVP; 1040 #ifdef UFS_EXTATTR 1041 ufs_extattr_uepm_init(&ump->um_extattr); 1042 #endif 1043 /* 1044 * Set FS local "last mounted on" information (NULL pad) 1045 */ 1046 bzero(fs->fs_fsmnt, MAXMNTLEN); 1047 strlcpy(fs->fs_fsmnt, mp->mnt_stat.f_mntonname, MAXMNTLEN); 1048 mp->mnt_stat.f_iosize = fs->fs_bsize; 1049 1050 if (mp->mnt_flag & MNT_ROOTFS) { 1051 /* 1052 * Root mount; update timestamp in mount structure. 1053 * this will be used by the common root mount code 1054 * to update the system clock. 1055 */ 1056 mp->mnt_time = fs->fs_time; 1057 } 1058 1059 if (ronly == 0) { 1060 fs->fs_mtime = time_second; 1061 if ((fs->fs_flags & FS_DOSOFTDEP) && 1062 (error = softdep_mount(devvp, mp, fs, cred)) != 0) { 1063 ffs_flushfiles(mp, FORCECLOSE, td); 1064 goto out; 1065 } 1066 if (fs->fs_snapinum[0] != 0) 1067 ffs_snapshot_mount(mp); 1068 fs->fs_fmod = 1; 1069 fs->fs_clean = 0; 1070 (void) ffs_sbupdate(ump, MNT_WAIT, 0); 1071 } 1072 /* 1073 * Initialize filesystem state information in mount struct. 1074 */ 1075 MNT_ILOCK(mp); 1076 mp->mnt_kern_flag |= MNTK_LOOKUP_SHARED | MNTK_EXTENDED_SHARED | 1077 MNTK_NO_IOPF | MNTK_UNMAPPED_BUFS | MNTK_USES_BCACHE; 1078 MNT_IUNLOCK(mp); 1079 #ifdef UFS_EXTATTR 1080 #ifdef UFS_EXTATTR_AUTOSTART 1081 /* 1082 * 1083 * Auto-starting does the following: 1084 * - check for /.attribute in the fs, and extattr_start if so 1085 * - for each file in .attribute, enable that file with 1086 * an attribute of the same name. 1087 * Not clear how to report errors -- probably eat them. 1088 * This would all happen while the filesystem was busy/not 1089 * available, so would effectively be "atomic". 1090 */ 1091 (void) ufs_extattr_autostart(mp, td); 1092 #endif /* !UFS_EXTATTR_AUTOSTART */ 1093 #endif /* !UFS_EXTATTR */ 1094 etp = malloc(sizeof *ump->um_fsfail_task, M_UFSMNT, M_WAITOK | M_ZERO); 1095 etp->fsid = mp->mnt_stat.f_fsid; 1096 ump->um_fsfail_task = etp; 1097 return (0); 1098 out: 1099 if (fs != NULL) { 1100 free(fs->fs_csp, M_UFSMNT); 1101 free(fs, M_UFSMNT); 1102 } 1103 if (cp != NULL) { 1104 g_topology_lock(); 1105 g_vfs_close(cp); 1106 g_topology_unlock(); 1107 } 1108 if (ump) { 1109 mtx_destroy(UFS_MTX(ump)); 1110 if (mp->mnt_gjprovider != NULL) { 1111 free(mp->mnt_gjprovider, M_UFSMNT); 1112 mp->mnt_gjprovider = NULL; 1113 } 1114 free(ump, M_UFSMNT); 1115 mp->mnt_data = NULL; 1116 } 1117 BO_LOCK(&odevvp->v_bufobj); 1118 odevvp->v_bufobj.bo_flag &= ~BO_NOBUFS; 1119 BO_UNLOCK(&odevvp->v_bufobj); 1120 atomic_store_rel_ptr((uintptr_t *)&dev->si_mountpt, 0); 1121 mntfs_freevp(devvp); 1122 dev_rel(dev); 1123 return (error); 1124 } 1125 1126 /* 1127 * A read function for use by filesystem-layer routines. 1128 */ 1129 static int 1130 ffs_use_bread(void *devfd, off_t loc, void **bufp, int size) 1131 { 1132 struct buf *bp; 1133 int error; 1134 1135 KASSERT(*bufp == NULL, ("ffs_use_bread: non-NULL *bufp %p\n", *bufp)); 1136 *bufp = malloc(size, M_UFSMNT, M_WAITOK); 1137 if ((error = bread((struct vnode *)devfd, btodb(loc), size, NOCRED, 1138 &bp)) != 0) 1139 return (error); 1140 bcopy(bp->b_data, *bufp, size); 1141 bp->b_flags |= B_INVAL | B_NOCACHE; 1142 brelse(bp); 1143 return (0); 1144 } 1145 1146 static int bigcgs = 0; 1147 SYSCTL_INT(_debug, OID_AUTO, bigcgs, CTLFLAG_RW, &bigcgs, 0, ""); 1148 1149 /* 1150 * Sanity checks for loading old filesystem superblocks. 1151 * See ffs_oldfscompat_write below for unwound actions. 1152 * 1153 * XXX - Parts get retired eventually. 1154 * Unfortunately new bits get added. 1155 */ 1156 static void 1157 ffs_oldfscompat_read(fs, ump, sblockloc) 1158 struct fs *fs; 1159 struct ufsmount *ump; 1160 ufs2_daddr_t sblockloc; 1161 { 1162 off_t maxfilesize; 1163 1164 /* 1165 * If not yet done, update fs_flags location and value of fs_sblockloc. 1166 */ 1167 if ((fs->fs_old_flags & FS_FLAGS_UPDATED) == 0) { 1168 fs->fs_flags = fs->fs_old_flags; 1169 fs->fs_old_flags |= FS_FLAGS_UPDATED; 1170 fs->fs_sblockloc = sblockloc; 1171 } 1172 /* 1173 * If not yet done, update UFS1 superblock with new wider fields. 1174 */ 1175 if (fs->fs_magic == FS_UFS1_MAGIC && fs->fs_maxbsize != fs->fs_bsize) { 1176 fs->fs_maxbsize = fs->fs_bsize; 1177 fs->fs_time = fs->fs_old_time; 1178 fs->fs_size = fs->fs_old_size; 1179 fs->fs_dsize = fs->fs_old_dsize; 1180 fs->fs_csaddr = fs->fs_old_csaddr; 1181 fs->fs_cstotal.cs_ndir = fs->fs_old_cstotal.cs_ndir; 1182 fs->fs_cstotal.cs_nbfree = fs->fs_old_cstotal.cs_nbfree; 1183 fs->fs_cstotal.cs_nifree = fs->fs_old_cstotal.cs_nifree; 1184 fs->fs_cstotal.cs_nffree = fs->fs_old_cstotal.cs_nffree; 1185 } 1186 if (fs->fs_magic == FS_UFS1_MAGIC && 1187 fs->fs_old_inodefmt < FS_44INODEFMT) { 1188 fs->fs_maxfilesize = ((uint64_t)1 << 31) - 1; 1189 fs->fs_qbmask = ~fs->fs_bmask; 1190 fs->fs_qfmask = ~fs->fs_fmask; 1191 } 1192 if (fs->fs_magic == FS_UFS1_MAGIC) { 1193 ump->um_savedmaxfilesize = fs->fs_maxfilesize; 1194 maxfilesize = (uint64_t)0x80000000 * fs->fs_bsize - 1; 1195 if (fs->fs_maxfilesize > maxfilesize) 1196 fs->fs_maxfilesize = maxfilesize; 1197 } 1198 /* Compatibility for old filesystems */ 1199 if (fs->fs_avgfilesize <= 0) 1200 fs->fs_avgfilesize = AVFILESIZ; 1201 if (fs->fs_avgfpdir <= 0) 1202 fs->fs_avgfpdir = AFPDIR; 1203 if (bigcgs) { 1204 fs->fs_save_cgsize = fs->fs_cgsize; 1205 fs->fs_cgsize = fs->fs_bsize; 1206 } 1207 } 1208 1209 /* 1210 * Unwinding superblock updates for old filesystems. 1211 * See ffs_oldfscompat_read above for details. 1212 * 1213 * XXX - Parts get retired eventually. 1214 * Unfortunately new bits get added. 1215 */ 1216 void 1217 ffs_oldfscompat_write(fs, ump) 1218 struct fs *fs; 1219 struct ufsmount *ump; 1220 { 1221 1222 /* 1223 * Copy back UFS2 updated fields that UFS1 inspects. 1224 */ 1225 if (fs->fs_magic == FS_UFS1_MAGIC) { 1226 fs->fs_old_time = fs->fs_time; 1227 fs->fs_old_cstotal.cs_ndir = fs->fs_cstotal.cs_ndir; 1228 fs->fs_old_cstotal.cs_nbfree = fs->fs_cstotal.cs_nbfree; 1229 fs->fs_old_cstotal.cs_nifree = fs->fs_cstotal.cs_nifree; 1230 fs->fs_old_cstotal.cs_nffree = fs->fs_cstotal.cs_nffree; 1231 fs->fs_maxfilesize = ump->um_savedmaxfilesize; 1232 } 1233 if (bigcgs) { 1234 fs->fs_cgsize = fs->fs_save_cgsize; 1235 fs->fs_save_cgsize = 0; 1236 } 1237 } 1238 1239 /* 1240 * unmount system call 1241 */ 1242 static int 1243 ffs_unmount(mp, mntflags) 1244 struct mount *mp; 1245 int mntflags; 1246 { 1247 struct thread *td; 1248 struct ufsmount *ump = VFSTOUFS(mp); 1249 struct fs *fs; 1250 int error, flags, susp; 1251 #ifdef UFS_EXTATTR 1252 int e_restart; 1253 #endif 1254 1255 flags = 0; 1256 td = curthread; 1257 fs = ump->um_fs; 1258 if (mntflags & MNT_FORCE) 1259 flags |= FORCECLOSE; 1260 susp = fs->fs_ronly == 0; 1261 #ifdef UFS_EXTATTR 1262 if ((error = ufs_extattr_stop(mp, td))) { 1263 if (error != EOPNOTSUPP) 1264 printf("WARNING: unmount %s: ufs_extattr_stop " 1265 "returned errno %d\n", mp->mnt_stat.f_mntonname, 1266 error); 1267 e_restart = 0; 1268 } else { 1269 ufs_extattr_uepm_destroy(&ump->um_extattr); 1270 e_restart = 1; 1271 } 1272 #endif 1273 if (susp) { 1274 error = vfs_write_suspend_umnt(mp); 1275 if (error != 0) 1276 goto fail1; 1277 } 1278 if (MOUNTEDSOFTDEP(mp)) 1279 error = softdep_flushfiles(mp, flags, td); 1280 else 1281 error = ffs_flushfiles(mp, flags, td); 1282 if (error != 0 && !ffs_fsfail_cleanup(ump, error)) 1283 goto fail; 1284 1285 UFS_LOCK(ump); 1286 if (fs->fs_pendingblocks != 0 || fs->fs_pendinginodes != 0) { 1287 printf("WARNING: unmount %s: pending error: blocks %jd " 1288 "files %d\n", fs->fs_fsmnt, (intmax_t)fs->fs_pendingblocks, 1289 fs->fs_pendinginodes); 1290 fs->fs_pendingblocks = 0; 1291 fs->fs_pendinginodes = 0; 1292 } 1293 UFS_UNLOCK(ump); 1294 if (MOUNTEDSOFTDEP(mp)) 1295 softdep_unmount(mp); 1296 if (fs->fs_ronly == 0 || ump->um_fsckpid > 0) { 1297 fs->fs_clean = fs->fs_flags & (FS_UNCLEAN|FS_NEEDSFSCK) ? 0 : 1; 1298 error = ffs_sbupdate(ump, MNT_WAIT, 0); 1299 if (ffs_fsfail_cleanup(ump, error)) 1300 error = 0; 1301 if (error != 0 && !ffs_fsfail_cleanup(ump, error)) { 1302 fs->fs_clean = 0; 1303 goto fail; 1304 } 1305 } 1306 if (susp) 1307 vfs_write_resume(mp, VR_START_WRITE); 1308 if (ump->um_trim_tq != NULL) { 1309 while (ump->um_trim_inflight != 0) 1310 pause("ufsutr", hz); 1311 taskqueue_drain_all(ump->um_trim_tq); 1312 taskqueue_free(ump->um_trim_tq); 1313 free (ump->um_trimhash, M_TRIM); 1314 } 1315 g_topology_lock(); 1316 if (ump->um_fsckpid > 0) { 1317 /* 1318 * Return to normal read-only mode. 1319 */ 1320 error = g_access(ump->um_cp, 0, -1, 0); 1321 ump->um_fsckpid = 0; 1322 } 1323 g_vfs_close(ump->um_cp); 1324 g_topology_unlock(); 1325 BO_LOCK(&ump->um_odevvp->v_bufobj); 1326 ump->um_odevvp->v_bufobj.bo_flag &= ~BO_NOBUFS; 1327 BO_UNLOCK(&ump->um_odevvp->v_bufobj); 1328 atomic_store_rel_ptr((uintptr_t *)&ump->um_dev->si_mountpt, 0); 1329 mntfs_freevp(ump->um_devvp); 1330 vrele(ump->um_odevvp); 1331 dev_rel(ump->um_dev); 1332 mtx_destroy(UFS_MTX(ump)); 1333 if (mp->mnt_gjprovider != NULL) { 1334 free(mp->mnt_gjprovider, M_UFSMNT); 1335 mp->mnt_gjprovider = NULL; 1336 } 1337 free(fs->fs_csp, M_UFSMNT); 1338 free(fs, M_UFSMNT); 1339 if (ump->um_fsfail_task != NULL) 1340 free(ump->um_fsfail_task, M_UFSMNT); 1341 free(ump, M_UFSMNT); 1342 mp->mnt_data = NULL; 1343 MNT_ILOCK(mp); 1344 mp->mnt_flag &= ~MNT_LOCAL; 1345 MNT_IUNLOCK(mp); 1346 if (td->td_su == mp) { 1347 td->td_su = NULL; 1348 vfs_rel(mp); 1349 } 1350 return (error); 1351 1352 fail: 1353 if (susp) 1354 vfs_write_resume(mp, VR_START_WRITE); 1355 fail1: 1356 #ifdef UFS_EXTATTR 1357 if (e_restart) { 1358 ufs_extattr_uepm_init(&ump->um_extattr); 1359 #ifdef UFS_EXTATTR_AUTOSTART 1360 (void) ufs_extattr_autostart(mp, td); 1361 #endif 1362 } 1363 #endif 1364 1365 return (error); 1366 } 1367 1368 /* 1369 * Flush out all the files in a filesystem. 1370 */ 1371 int 1372 ffs_flushfiles(mp, flags, td) 1373 struct mount *mp; 1374 int flags; 1375 struct thread *td; 1376 { 1377 struct ufsmount *ump; 1378 int qerror, error; 1379 1380 ump = VFSTOUFS(mp); 1381 qerror = 0; 1382 #ifdef QUOTA 1383 if (mp->mnt_flag & MNT_QUOTA) { 1384 int i; 1385 error = vflush(mp, 0, SKIPSYSTEM|flags, td); 1386 if (error) 1387 return (error); 1388 for (i = 0; i < MAXQUOTAS; i++) { 1389 error = quotaoff(td, mp, i); 1390 if (error != 0) { 1391 if ((flags & EARLYFLUSH) == 0) 1392 return (error); 1393 else 1394 qerror = error; 1395 } 1396 } 1397 1398 /* 1399 * Here we fall through to vflush again to ensure that 1400 * we have gotten rid of all the system vnodes, unless 1401 * quotas must not be closed. 1402 */ 1403 } 1404 #endif 1405 ASSERT_VOP_LOCKED(ump->um_devvp, "ffs_flushfiles"); 1406 if (ump->um_devvp->v_vflag & VV_COPYONWRITE) { 1407 if ((error = vflush(mp, 0, SKIPSYSTEM | flags, td)) != 0) 1408 return (error); 1409 ffs_snapshot_unmount(mp); 1410 flags |= FORCECLOSE; 1411 /* 1412 * Here we fall through to vflush again to ensure 1413 * that we have gotten rid of all the system vnodes. 1414 */ 1415 } 1416 1417 /* 1418 * Do not close system files if quotas were not closed, to be 1419 * able to sync the remaining dquots. The freeblks softupdate 1420 * workitems might hold a reference on a dquot, preventing 1421 * quotaoff() from completing. Next round of 1422 * softdep_flushworklist() iteration should process the 1423 * blockers, allowing the next run of quotaoff() to finally 1424 * flush held dquots. 1425 * 1426 * Otherwise, flush all the files. 1427 */ 1428 if (qerror == 0 && (error = vflush(mp, 0, flags, td)) != 0) 1429 return (error); 1430 1431 /* 1432 * Flush filesystem metadata. 1433 */ 1434 vn_lock(ump->um_devvp, LK_EXCLUSIVE | LK_RETRY); 1435 error = VOP_FSYNC(ump->um_devvp, MNT_WAIT, td); 1436 VOP_UNLOCK(ump->um_devvp); 1437 return (error); 1438 } 1439 1440 /* 1441 * Get filesystem statistics. 1442 */ 1443 static int 1444 ffs_statfs(mp, sbp) 1445 struct mount *mp; 1446 struct statfs *sbp; 1447 { 1448 struct ufsmount *ump; 1449 struct fs *fs; 1450 1451 ump = VFSTOUFS(mp); 1452 fs = ump->um_fs; 1453 if (fs->fs_magic != FS_UFS1_MAGIC && fs->fs_magic != FS_UFS2_MAGIC) 1454 panic("ffs_statfs"); 1455 sbp->f_version = STATFS_VERSION; 1456 sbp->f_bsize = fs->fs_fsize; 1457 sbp->f_iosize = fs->fs_bsize; 1458 sbp->f_blocks = fs->fs_dsize; 1459 UFS_LOCK(ump); 1460 sbp->f_bfree = fs->fs_cstotal.cs_nbfree * fs->fs_frag + 1461 fs->fs_cstotal.cs_nffree + dbtofsb(fs, fs->fs_pendingblocks); 1462 sbp->f_bavail = freespace(fs, fs->fs_minfree) + 1463 dbtofsb(fs, fs->fs_pendingblocks); 1464 sbp->f_files = fs->fs_ncg * fs->fs_ipg - UFS_ROOTINO; 1465 sbp->f_ffree = fs->fs_cstotal.cs_nifree + fs->fs_pendinginodes; 1466 UFS_UNLOCK(ump); 1467 sbp->f_namemax = UFS_MAXNAMLEN; 1468 return (0); 1469 } 1470 1471 static bool 1472 sync_doupdate(struct inode *ip) 1473 { 1474 1475 return ((ip->i_flag & (IN_ACCESS | IN_CHANGE | IN_MODIFIED | 1476 IN_UPDATE)) != 0); 1477 } 1478 1479 static int 1480 ffs_sync_lazy_filter(struct vnode *vp, void *arg __unused) 1481 { 1482 struct inode *ip; 1483 1484 /* 1485 * Flags are safe to access because ->v_data invalidation 1486 * is held off by listmtx. 1487 */ 1488 if (vp->v_type == VNON) 1489 return (false); 1490 ip = VTOI(vp); 1491 if (!sync_doupdate(ip) && (vp->v_iflag & VI_OWEINACT) == 0) 1492 return (false); 1493 return (true); 1494 } 1495 1496 /* 1497 * For a lazy sync, we only care about access times, quotas and the 1498 * superblock. Other filesystem changes are already converted to 1499 * cylinder group blocks or inode blocks updates and are written to 1500 * disk by syncer. 1501 */ 1502 static int 1503 ffs_sync_lazy(mp) 1504 struct mount *mp; 1505 { 1506 struct vnode *mvp, *vp; 1507 struct inode *ip; 1508 struct thread *td; 1509 int allerror, error; 1510 1511 allerror = 0; 1512 td = curthread; 1513 if ((mp->mnt_flag & MNT_NOATIME) != 0) { 1514 #ifdef QUOTA 1515 qsync(mp); 1516 #endif 1517 goto sbupdate; 1518 } 1519 MNT_VNODE_FOREACH_LAZY(vp, mp, mvp, ffs_sync_lazy_filter, NULL) { 1520 if (vp->v_type == VNON) { 1521 VI_UNLOCK(vp); 1522 continue; 1523 } 1524 ip = VTOI(vp); 1525 1526 /* 1527 * The IN_ACCESS flag is converted to IN_MODIFIED by 1528 * ufs_close() and ufs_getattr() by the calls to 1529 * ufs_itimes_locked(), without subsequent UFS_UPDATE(). 1530 * Test also all the other timestamp flags too, to pick up 1531 * any other cases that could be missed. 1532 */ 1533 if (!sync_doupdate(ip) && (vp->v_iflag & VI_OWEINACT) == 0) { 1534 VI_UNLOCK(vp); 1535 continue; 1536 } 1537 if ((error = vget(vp, LK_EXCLUSIVE | LK_NOWAIT | LK_INTERLOCK, 1538 td)) != 0) 1539 continue; 1540 #ifdef QUOTA 1541 qsyncvp(vp); 1542 #endif 1543 if (sync_doupdate(ip)) 1544 error = ffs_update(vp, 0); 1545 if (error != 0) 1546 allerror = error; 1547 vput(vp); 1548 } 1549 sbupdate: 1550 if (VFSTOUFS(mp)->um_fs->fs_fmod != 0 && 1551 (error = ffs_sbupdate(VFSTOUFS(mp), MNT_LAZY, 0)) != 0) 1552 allerror = error; 1553 return (allerror); 1554 } 1555 1556 /* 1557 * Go through the disk queues to initiate sandbagged IO; 1558 * go through the inodes to write those that have been modified; 1559 * initiate the writing of the super block if it has been modified. 1560 * 1561 * Note: we are always called with the filesystem marked busy using 1562 * vfs_busy(). 1563 */ 1564 static int 1565 ffs_sync(mp, waitfor) 1566 struct mount *mp; 1567 int waitfor; 1568 { 1569 struct vnode *mvp, *vp, *devvp; 1570 struct thread *td; 1571 struct inode *ip; 1572 struct ufsmount *ump = VFSTOUFS(mp); 1573 struct fs *fs; 1574 int error, count, lockreq, allerror = 0; 1575 int suspend; 1576 int suspended; 1577 int secondary_writes; 1578 int secondary_accwrites; 1579 int softdep_deps; 1580 int softdep_accdeps; 1581 struct bufobj *bo; 1582 1583 suspend = 0; 1584 suspended = 0; 1585 td = curthread; 1586 fs = ump->um_fs; 1587 if (fs->fs_fmod != 0 && fs->fs_ronly != 0 && ump->um_fsckpid == 0) 1588 panic("%s: ffs_sync: modification on read-only filesystem", 1589 fs->fs_fsmnt); 1590 if (waitfor == MNT_LAZY) { 1591 if (!rebooting) 1592 return (ffs_sync_lazy(mp)); 1593 waitfor = MNT_NOWAIT; 1594 } 1595 1596 /* 1597 * Write back each (modified) inode. 1598 */ 1599 lockreq = LK_EXCLUSIVE | LK_NOWAIT; 1600 if (waitfor == MNT_SUSPEND) { 1601 suspend = 1; 1602 waitfor = MNT_WAIT; 1603 } 1604 if (waitfor == MNT_WAIT) 1605 lockreq = LK_EXCLUSIVE; 1606 lockreq |= LK_INTERLOCK | LK_SLEEPFAIL; 1607 loop: 1608 /* Grab snapshot of secondary write counts */ 1609 MNT_ILOCK(mp); 1610 secondary_writes = mp->mnt_secondary_writes; 1611 secondary_accwrites = mp->mnt_secondary_accwrites; 1612 MNT_IUNLOCK(mp); 1613 1614 /* Grab snapshot of softdep dependency counts */ 1615 softdep_get_depcounts(mp, &softdep_deps, &softdep_accdeps); 1616 1617 MNT_VNODE_FOREACH_ALL(vp, mp, mvp) { 1618 /* 1619 * Depend on the vnode interlock to keep things stable enough 1620 * for a quick test. Since there might be hundreds of 1621 * thousands of vnodes, we cannot afford even a subroutine 1622 * call unless there's a good chance that we have work to do. 1623 */ 1624 if (vp->v_type == VNON) { 1625 VI_UNLOCK(vp); 1626 continue; 1627 } 1628 ip = VTOI(vp); 1629 if ((ip->i_flag & 1630 (IN_ACCESS | IN_CHANGE | IN_MODIFIED | IN_UPDATE)) == 0 && 1631 vp->v_bufobj.bo_dirty.bv_cnt == 0) { 1632 VI_UNLOCK(vp); 1633 continue; 1634 } 1635 if ((error = vget(vp, lockreq, td)) != 0) { 1636 if (error == ENOENT || error == ENOLCK) { 1637 MNT_VNODE_FOREACH_ALL_ABORT(mp, mvp); 1638 goto loop; 1639 } 1640 continue; 1641 } 1642 #ifdef QUOTA 1643 qsyncvp(vp); 1644 #endif 1645 if ((error = ffs_syncvnode(vp, waitfor, 0)) != 0) 1646 allerror = error; 1647 vput(vp); 1648 } 1649 /* 1650 * Force stale filesystem control information to be flushed. 1651 */ 1652 if (waitfor == MNT_WAIT || rebooting) { 1653 if ((error = softdep_flushworklist(ump->um_mountp, &count, td))) 1654 allerror = error; 1655 if (ffs_fsfail_cleanup(ump, allerror)) 1656 allerror = 0; 1657 /* Flushed work items may create new vnodes to clean */ 1658 if (allerror == 0 && count) 1659 goto loop; 1660 } 1661 1662 devvp = ump->um_devvp; 1663 bo = &devvp->v_bufobj; 1664 BO_LOCK(bo); 1665 if (bo->bo_numoutput > 0 || bo->bo_dirty.bv_cnt > 0) { 1666 BO_UNLOCK(bo); 1667 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 1668 error = VOP_FSYNC(devvp, waitfor, td); 1669 VOP_UNLOCK(devvp); 1670 if (MOUNTEDSOFTDEP(mp) && (error == 0 || error == EAGAIN)) 1671 error = ffs_sbupdate(ump, waitfor, 0); 1672 if (error != 0) 1673 allerror = error; 1674 if (ffs_fsfail_cleanup(ump, allerror)) 1675 allerror = 0; 1676 if (allerror == 0 && waitfor == MNT_WAIT) 1677 goto loop; 1678 } else if (suspend != 0) { 1679 if (softdep_check_suspend(mp, 1680 devvp, 1681 softdep_deps, 1682 softdep_accdeps, 1683 secondary_writes, 1684 secondary_accwrites) != 0) { 1685 MNT_IUNLOCK(mp); 1686 goto loop; /* More work needed */ 1687 } 1688 mtx_assert(MNT_MTX(mp), MA_OWNED); 1689 mp->mnt_kern_flag |= MNTK_SUSPEND2 | MNTK_SUSPENDED; 1690 MNT_IUNLOCK(mp); 1691 suspended = 1; 1692 } else 1693 BO_UNLOCK(bo); 1694 /* 1695 * Write back modified superblock. 1696 */ 1697 if (fs->fs_fmod != 0 && 1698 (error = ffs_sbupdate(ump, waitfor, suspended)) != 0) 1699 allerror = error; 1700 if (ffs_fsfail_cleanup(ump, allerror)) 1701 allerror = 0; 1702 return (allerror); 1703 } 1704 1705 int 1706 ffs_vget(mp, ino, flags, vpp) 1707 struct mount *mp; 1708 ino_t ino; 1709 int flags; 1710 struct vnode **vpp; 1711 { 1712 return (ffs_vgetf(mp, ino, flags, vpp, 0)); 1713 } 1714 1715 int 1716 ffs_vgetf(mp, ino, flags, vpp, ffs_flags) 1717 struct mount *mp; 1718 ino_t ino; 1719 int flags; 1720 struct vnode **vpp; 1721 int ffs_flags; 1722 { 1723 struct fs *fs; 1724 struct inode *ip; 1725 struct ufsmount *ump; 1726 struct buf *bp; 1727 struct vnode *vp; 1728 daddr_t dbn; 1729 int error; 1730 1731 MPASS((ffs_flags & FFSV_REPLACE) == 0 || (flags & LK_EXCLUSIVE) != 0); 1732 1733 error = vfs_hash_get(mp, ino, flags, curthread, vpp, NULL, NULL); 1734 if (error != 0) 1735 return (error); 1736 if (*vpp != NULL) { 1737 if ((ffs_flags & FFSV_REPLACE) == 0) 1738 return (0); 1739 vgone(*vpp); 1740 vput(*vpp); 1741 } 1742 1743 /* 1744 * We must promote to an exclusive lock for vnode creation. This 1745 * can happen if lookup is passed LOCKSHARED. 1746 */ 1747 if ((flags & LK_TYPE_MASK) == LK_SHARED) { 1748 flags &= ~LK_TYPE_MASK; 1749 flags |= LK_EXCLUSIVE; 1750 } 1751 1752 /* 1753 * We do not lock vnode creation as it is believed to be too 1754 * expensive for such rare case as simultaneous creation of vnode 1755 * for same ino by different processes. We just allow them to race 1756 * and check later to decide who wins. Let the race begin! 1757 */ 1758 1759 ump = VFSTOUFS(mp); 1760 fs = ump->um_fs; 1761 ip = uma_zalloc(uma_inode, M_WAITOK | M_ZERO); 1762 1763 /* Allocate a new vnode/inode. */ 1764 error = getnewvnode("ufs", mp, fs->fs_magic == FS_UFS1_MAGIC ? 1765 &ffs_vnodeops1 : &ffs_vnodeops2, &vp); 1766 if (error) { 1767 *vpp = NULL; 1768 uma_zfree(uma_inode, ip); 1769 return (error); 1770 } 1771 /* 1772 * FFS supports recursive locking. 1773 */ 1774 lockmgr(vp->v_vnlock, LK_EXCLUSIVE, NULL); 1775 VN_LOCK_AREC(vp); 1776 vp->v_data = ip; 1777 vp->v_bufobj.bo_bsize = fs->fs_bsize; 1778 ip->i_vnode = vp; 1779 ip->i_ump = ump; 1780 ip->i_number = ino; 1781 ip->i_ea_refs = 0; 1782 ip->i_nextclustercg = -1; 1783 ip->i_flag = fs->fs_magic == FS_UFS1_MAGIC ? 0 : IN_UFS2; 1784 ip->i_mode = 0; /* ensure error cases below throw away vnode */ 1785 #ifdef QUOTA 1786 { 1787 int i; 1788 for (i = 0; i < MAXQUOTAS; i++) 1789 ip->i_dquot[i] = NODQUOT; 1790 } 1791 #endif 1792 1793 if (ffs_flags & FFSV_FORCEINSMQ) 1794 vp->v_vflag |= VV_FORCEINSMQ; 1795 error = insmntque(vp, mp); 1796 if (error != 0) { 1797 uma_zfree(uma_inode, ip); 1798 *vpp = NULL; 1799 return (error); 1800 } 1801 vp->v_vflag &= ~VV_FORCEINSMQ; 1802 error = vfs_hash_insert(vp, ino, flags, curthread, vpp, NULL, NULL); 1803 if (error != 0) 1804 return (error); 1805 if (*vpp != NULL) { 1806 /* 1807 * Calls from ffs_valloc() (i.e. FFSV_REPLACE set) 1808 * operate on empty inode, which must not be found by 1809 * other threads until fully filled. Vnode for empty 1810 * inode must be not re-inserted on the hash by other 1811 * thread, after removal by us at the beginning. 1812 */ 1813 MPASS((ffs_flags & FFSV_REPLACE) == 0); 1814 return (0); 1815 } 1816 1817 /* Read in the disk contents for the inode, copy into the inode. */ 1818 dbn = fsbtodb(fs, ino_to_fsba(fs, ino)); 1819 error = ffs_breadz(ump, ump->um_devvp, dbn, dbn, (int)fs->fs_bsize, 1820 NULL, NULL, 0, NOCRED, 0, NULL, &bp); 1821 if (error != 0) { 1822 /* 1823 * The inode does not contain anything useful, so it would 1824 * be misleading to leave it on its hash chain. With mode 1825 * still zero, it will be unlinked and returned to the free 1826 * list by vput(). 1827 */ 1828 vgone(vp); 1829 vput(vp); 1830 *vpp = NULL; 1831 return (error); 1832 } 1833 if (I_IS_UFS1(ip)) 1834 ip->i_din1 = uma_zalloc(uma_ufs1, M_WAITOK); 1835 else 1836 ip->i_din2 = uma_zalloc(uma_ufs2, M_WAITOK); 1837 if ((error = ffs_load_inode(bp, ip, fs, ino)) != 0) { 1838 bqrelse(bp); 1839 vgone(vp); 1840 vput(vp); 1841 *vpp = NULL; 1842 return (error); 1843 } 1844 if (DOINGSOFTDEP(vp)) 1845 softdep_load_inodeblock(ip); 1846 else 1847 ip->i_effnlink = ip->i_nlink; 1848 bqrelse(bp); 1849 1850 /* 1851 * Initialize the vnode from the inode, check for aliases. 1852 * Note that the underlying vnode may have changed. 1853 */ 1854 error = ufs_vinit(mp, I_IS_UFS1(ip) ? &ffs_fifoops1 : &ffs_fifoops2, 1855 &vp); 1856 if (error) { 1857 vgone(vp); 1858 vput(vp); 1859 *vpp = NULL; 1860 return (error); 1861 } 1862 1863 /* 1864 * Finish inode initialization. 1865 */ 1866 if (vp->v_type != VFIFO) { 1867 /* FFS supports shared locking for all files except fifos. */ 1868 VN_LOCK_ASHARE(vp); 1869 } 1870 1871 /* 1872 * Set up a generation number for this inode if it does not 1873 * already have one. This should only happen on old filesystems. 1874 */ 1875 if (ip->i_gen == 0) { 1876 while (ip->i_gen == 0) 1877 ip->i_gen = arc4random(); 1878 if ((vp->v_mount->mnt_flag & MNT_RDONLY) == 0) { 1879 UFS_INODE_SET_FLAG(ip, IN_MODIFIED); 1880 DIP_SET(ip, i_gen, ip->i_gen); 1881 } 1882 } 1883 #ifdef MAC 1884 if ((mp->mnt_flag & MNT_MULTILABEL) && ip->i_mode) { 1885 /* 1886 * If this vnode is already allocated, and we're running 1887 * multi-label, attempt to perform a label association 1888 * from the extended attributes on the inode. 1889 */ 1890 error = mac_vnode_associate_extattr(mp, vp); 1891 if (error) { 1892 /* ufs_inactive will release ip->i_devvp ref. */ 1893 vgone(vp); 1894 vput(vp); 1895 *vpp = NULL; 1896 return (error); 1897 } 1898 } 1899 #endif 1900 1901 *vpp = vp; 1902 return (0); 1903 } 1904 1905 /* 1906 * File handle to vnode 1907 * 1908 * Have to be really careful about stale file handles: 1909 * - check that the inode number is valid 1910 * - for UFS2 check that the inode number is initialized 1911 * - call ffs_vget() to get the locked inode 1912 * - check for an unallocated inode (i_mode == 0) 1913 * - check that the given client host has export rights and return 1914 * those rights via. exflagsp and credanonp 1915 */ 1916 static int 1917 ffs_fhtovp(mp, fhp, flags, vpp) 1918 struct mount *mp; 1919 struct fid *fhp; 1920 int flags; 1921 struct vnode **vpp; 1922 { 1923 struct ufid *ufhp; 1924 struct ufsmount *ump; 1925 struct fs *fs; 1926 struct cg *cgp; 1927 struct buf *bp; 1928 ino_t ino; 1929 u_int cg; 1930 int error; 1931 1932 ufhp = (struct ufid *)fhp; 1933 ino = ufhp->ufid_ino; 1934 ump = VFSTOUFS(mp); 1935 fs = ump->um_fs; 1936 if (ino < UFS_ROOTINO || ino >= fs->fs_ncg * fs->fs_ipg) 1937 return (ESTALE); 1938 /* 1939 * Need to check if inode is initialized because UFS2 does lazy 1940 * initialization and nfs_fhtovp can offer arbitrary inode numbers. 1941 */ 1942 if (fs->fs_magic != FS_UFS2_MAGIC) 1943 return (ufs_fhtovp(mp, ufhp, flags, vpp)); 1944 cg = ino_to_cg(fs, ino); 1945 if ((error = ffs_getcg(fs, ump->um_devvp, cg, 0, &bp, &cgp)) != 0) 1946 return (error); 1947 if (ino >= cg * fs->fs_ipg + cgp->cg_initediblk) { 1948 brelse(bp); 1949 return (ESTALE); 1950 } 1951 brelse(bp); 1952 return (ufs_fhtovp(mp, ufhp, flags, vpp)); 1953 } 1954 1955 /* 1956 * Initialize the filesystem. 1957 */ 1958 static int 1959 ffs_init(vfsp) 1960 struct vfsconf *vfsp; 1961 { 1962 1963 ffs_susp_initialize(); 1964 softdep_initialize(); 1965 return (ufs_init(vfsp)); 1966 } 1967 1968 /* 1969 * Undo the work of ffs_init(). 1970 */ 1971 static int 1972 ffs_uninit(vfsp) 1973 struct vfsconf *vfsp; 1974 { 1975 int ret; 1976 1977 ret = ufs_uninit(vfsp); 1978 softdep_uninitialize(); 1979 ffs_susp_uninitialize(); 1980 taskqueue_drain_all(taskqueue_thread); 1981 return (ret); 1982 } 1983 1984 /* 1985 * Structure used to pass information from ffs_sbupdate to its 1986 * helper routine ffs_use_bwrite. 1987 */ 1988 struct devfd { 1989 struct ufsmount *ump; 1990 struct buf *sbbp; 1991 int waitfor; 1992 int suspended; 1993 int error; 1994 }; 1995 1996 /* 1997 * Write a superblock and associated information back to disk. 1998 */ 1999 int 2000 ffs_sbupdate(ump, waitfor, suspended) 2001 struct ufsmount *ump; 2002 int waitfor; 2003 int suspended; 2004 { 2005 struct fs *fs; 2006 struct buf *sbbp; 2007 struct devfd devfd; 2008 2009 fs = ump->um_fs; 2010 if (fs->fs_ronly == 1 && 2011 (ump->um_mountp->mnt_flag & (MNT_RDONLY | MNT_UPDATE)) != 2012 (MNT_RDONLY | MNT_UPDATE) && ump->um_fsckpid == 0) 2013 panic("ffs_sbupdate: write read-only filesystem"); 2014 /* 2015 * We use the superblock's buf to serialize calls to ffs_sbupdate(). 2016 */ 2017 sbbp = getblk(ump->um_devvp, btodb(fs->fs_sblockloc), 2018 (int)fs->fs_sbsize, 0, 0, 0); 2019 /* 2020 * Initialize info needed for write function. 2021 */ 2022 devfd.ump = ump; 2023 devfd.sbbp = sbbp; 2024 devfd.waitfor = waitfor; 2025 devfd.suspended = suspended; 2026 devfd.error = 0; 2027 return (ffs_sbput(&devfd, fs, fs->fs_sblockloc, ffs_use_bwrite)); 2028 } 2029 2030 /* 2031 * Write function for use by filesystem-layer routines. 2032 */ 2033 static int 2034 ffs_use_bwrite(void *devfd, off_t loc, void *buf, int size) 2035 { 2036 struct devfd *devfdp; 2037 struct ufsmount *ump; 2038 struct buf *bp; 2039 struct fs *fs; 2040 int error; 2041 2042 devfdp = devfd; 2043 ump = devfdp->ump; 2044 fs = ump->um_fs; 2045 /* 2046 * Writing the superblock summary information. 2047 */ 2048 if (loc != fs->fs_sblockloc) { 2049 bp = getblk(ump->um_devvp, btodb(loc), size, 0, 0, 0); 2050 bcopy(buf, bp->b_data, (u_int)size); 2051 if (devfdp->suspended) 2052 bp->b_flags |= B_VALIDSUSPWRT; 2053 if (devfdp->waitfor != MNT_WAIT) 2054 bawrite(bp); 2055 else if ((error = bwrite(bp)) != 0) 2056 devfdp->error = error; 2057 return (0); 2058 } 2059 /* 2060 * Writing the superblock itself. We need to do special checks for it. 2061 */ 2062 bp = devfdp->sbbp; 2063 if (ffs_fsfail_cleanup(ump, devfdp->error)) 2064 devfdp->error = 0; 2065 if (devfdp->error != 0) { 2066 brelse(bp); 2067 return (devfdp->error); 2068 } 2069 if (fs->fs_magic == FS_UFS1_MAGIC && fs->fs_sblockloc != SBLOCK_UFS1 && 2070 (fs->fs_old_flags & FS_FLAGS_UPDATED) == 0) { 2071 printf("WARNING: %s: correcting fs_sblockloc from %jd to %d\n", 2072 fs->fs_fsmnt, fs->fs_sblockloc, SBLOCK_UFS1); 2073 fs->fs_sblockloc = SBLOCK_UFS1; 2074 } 2075 if (fs->fs_magic == FS_UFS2_MAGIC && fs->fs_sblockloc != SBLOCK_UFS2 && 2076 (fs->fs_old_flags & FS_FLAGS_UPDATED) == 0) { 2077 printf("WARNING: %s: correcting fs_sblockloc from %jd to %d\n", 2078 fs->fs_fsmnt, fs->fs_sblockloc, SBLOCK_UFS2); 2079 fs->fs_sblockloc = SBLOCK_UFS2; 2080 } 2081 if (MOUNTEDSOFTDEP(ump->um_mountp)) 2082 softdep_setup_sbupdate(ump, (struct fs *)bp->b_data, bp); 2083 bcopy((caddr_t)fs, bp->b_data, (u_int)fs->fs_sbsize); 2084 fs = (struct fs *)bp->b_data; 2085 ffs_oldfscompat_write(fs, ump); 2086 /* 2087 * Because we may have made changes to the superblock, we need to 2088 * recompute its check-hash. 2089 */ 2090 fs->fs_ckhash = ffs_calc_sbhash(fs); 2091 if (devfdp->suspended) 2092 bp->b_flags |= B_VALIDSUSPWRT; 2093 if (devfdp->waitfor != MNT_WAIT) 2094 bawrite(bp); 2095 else if ((error = bwrite(bp)) != 0) 2096 devfdp->error = error; 2097 return (devfdp->error); 2098 } 2099 2100 static int 2101 ffs_extattrctl(struct mount *mp, int cmd, struct vnode *filename_vp, 2102 int attrnamespace, const char *attrname) 2103 { 2104 2105 #ifdef UFS_EXTATTR 2106 return (ufs_extattrctl(mp, cmd, filename_vp, attrnamespace, 2107 attrname)); 2108 #else 2109 return (vfs_stdextattrctl(mp, cmd, filename_vp, attrnamespace, 2110 attrname)); 2111 #endif 2112 } 2113 2114 static void 2115 ffs_ifree(struct ufsmount *ump, struct inode *ip) 2116 { 2117 2118 if (ump->um_fstype == UFS1 && ip->i_din1 != NULL) 2119 uma_zfree(uma_ufs1, ip->i_din1); 2120 else if (ip->i_din2 != NULL) 2121 uma_zfree(uma_ufs2, ip->i_din2); 2122 uma_zfree(uma_inode, ip); 2123 } 2124 2125 static int dobkgrdwrite = 1; 2126 SYSCTL_INT(_debug, OID_AUTO, dobkgrdwrite, CTLFLAG_RW, &dobkgrdwrite, 0, 2127 "Do background writes (honoring the BV_BKGRDWRITE flag)?"); 2128 2129 /* 2130 * Complete a background write started from bwrite. 2131 */ 2132 static void 2133 ffs_backgroundwritedone(struct buf *bp) 2134 { 2135 struct bufobj *bufobj; 2136 struct buf *origbp; 2137 2138 #ifdef SOFTUPDATES 2139 if (!LIST_EMPTY(&bp->b_dep) && (bp->b_ioflags & BIO_ERROR) != 0) 2140 softdep_handle_error(bp); 2141 #endif 2142 2143 /* 2144 * Find the original buffer that we are writing. 2145 */ 2146 bufobj = bp->b_bufobj; 2147 BO_LOCK(bufobj); 2148 if ((origbp = gbincore(bp->b_bufobj, bp->b_lblkno)) == NULL) 2149 panic("backgroundwritedone: lost buffer"); 2150 2151 /* 2152 * We should mark the cylinder group buffer origbp as 2153 * dirty, to not lose the failed write. 2154 */ 2155 if ((bp->b_ioflags & BIO_ERROR) != 0) 2156 origbp->b_vflags |= BV_BKGRDERR; 2157 BO_UNLOCK(bufobj); 2158 /* 2159 * Process dependencies then return any unfinished ones. 2160 */ 2161 if (!LIST_EMPTY(&bp->b_dep) && (bp->b_ioflags & BIO_ERROR) == 0) 2162 buf_complete(bp); 2163 #ifdef SOFTUPDATES 2164 if (!LIST_EMPTY(&bp->b_dep)) 2165 softdep_move_dependencies(bp, origbp); 2166 #endif 2167 /* 2168 * This buffer is marked B_NOCACHE so when it is released 2169 * by biodone it will be tossed. 2170 */ 2171 bp->b_flags |= B_NOCACHE; 2172 bp->b_flags &= ~B_CACHE; 2173 pbrelvp(bp); 2174 2175 /* 2176 * Prevent brelse() from trying to keep and re-dirtying bp on 2177 * errors. It causes b_bufobj dereference in 2178 * bdirty()/reassignbuf(), and b_bufobj was cleared in 2179 * pbrelvp() above. 2180 */ 2181 if ((bp->b_ioflags & BIO_ERROR) != 0) 2182 bp->b_flags |= B_INVAL; 2183 bufdone(bp); 2184 BO_LOCK(bufobj); 2185 /* 2186 * Clear the BV_BKGRDINPROG flag in the original buffer 2187 * and awaken it if it is waiting for the write to complete. 2188 * If BV_BKGRDINPROG is not set in the original buffer it must 2189 * have been released and re-instantiated - which is not legal. 2190 */ 2191 KASSERT((origbp->b_vflags & BV_BKGRDINPROG), 2192 ("backgroundwritedone: lost buffer2")); 2193 origbp->b_vflags &= ~BV_BKGRDINPROG; 2194 if (origbp->b_vflags & BV_BKGRDWAIT) { 2195 origbp->b_vflags &= ~BV_BKGRDWAIT; 2196 wakeup(&origbp->b_xflags); 2197 } 2198 BO_UNLOCK(bufobj); 2199 } 2200 2201 2202 /* 2203 * Write, release buffer on completion. (Done by iodone 2204 * if async). Do not bother writing anything if the buffer 2205 * is invalid. 2206 * 2207 * Note that we set B_CACHE here, indicating that buffer is 2208 * fully valid and thus cacheable. This is true even of NFS 2209 * now so we set it generally. This could be set either here 2210 * or in biodone() since the I/O is synchronous. We put it 2211 * here. 2212 */ 2213 static int 2214 ffs_bufwrite(struct buf *bp) 2215 { 2216 struct buf *newbp; 2217 struct cg *cgp; 2218 2219 CTR3(KTR_BUF, "bufwrite(%p) vp %p flags %X", bp, bp->b_vp, bp->b_flags); 2220 if (bp->b_flags & B_INVAL) { 2221 brelse(bp); 2222 return (0); 2223 } 2224 2225 if (!BUF_ISLOCKED(bp)) 2226 panic("bufwrite: buffer is not busy???"); 2227 /* 2228 * If a background write is already in progress, delay 2229 * writing this block if it is asynchronous. Otherwise 2230 * wait for the background write to complete. 2231 */ 2232 BO_LOCK(bp->b_bufobj); 2233 if (bp->b_vflags & BV_BKGRDINPROG) { 2234 if (bp->b_flags & B_ASYNC) { 2235 BO_UNLOCK(bp->b_bufobj); 2236 bdwrite(bp); 2237 return (0); 2238 } 2239 bp->b_vflags |= BV_BKGRDWAIT; 2240 msleep(&bp->b_xflags, BO_LOCKPTR(bp->b_bufobj), PRIBIO, 2241 "bwrbg", 0); 2242 if (bp->b_vflags & BV_BKGRDINPROG) 2243 panic("bufwrite: still writing"); 2244 } 2245 bp->b_vflags &= ~BV_BKGRDERR; 2246 BO_UNLOCK(bp->b_bufobj); 2247 2248 /* 2249 * If this buffer is marked for background writing and we 2250 * do not have to wait for it, make a copy and write the 2251 * copy so as to leave this buffer ready for further use. 2252 * 2253 * This optimization eats a lot of memory. If we have a page 2254 * or buffer shortfall we can't do it. 2255 */ 2256 if (dobkgrdwrite && (bp->b_xflags & BX_BKGRDWRITE) && 2257 (bp->b_flags & B_ASYNC) && 2258 !vm_page_count_severe() && 2259 !buf_dirty_count_severe()) { 2260 KASSERT(bp->b_iodone == NULL, 2261 ("bufwrite: needs chained iodone (%p)", bp->b_iodone)); 2262 2263 /* get a new block */ 2264 newbp = geteblk(bp->b_bufsize, GB_NOWAIT_BD); 2265 if (newbp == NULL) 2266 goto normal_write; 2267 2268 KASSERT(buf_mapped(bp), ("Unmapped cg")); 2269 memcpy(newbp->b_data, bp->b_data, bp->b_bufsize); 2270 BO_LOCK(bp->b_bufobj); 2271 bp->b_vflags |= BV_BKGRDINPROG; 2272 BO_UNLOCK(bp->b_bufobj); 2273 newbp->b_xflags |= 2274 (bp->b_xflags & BX_FSPRIV) | BX_BKGRDMARKER; 2275 newbp->b_lblkno = bp->b_lblkno; 2276 newbp->b_blkno = bp->b_blkno; 2277 newbp->b_offset = bp->b_offset; 2278 newbp->b_iodone = ffs_backgroundwritedone; 2279 newbp->b_flags |= B_ASYNC; 2280 newbp->b_flags &= ~B_INVAL; 2281 pbgetvp(bp->b_vp, newbp); 2282 2283 #ifdef SOFTUPDATES 2284 /* 2285 * Move over the dependencies. If there are rollbacks, 2286 * leave the parent buffer dirtied as it will need to 2287 * be written again. 2288 */ 2289 if (LIST_EMPTY(&bp->b_dep) || 2290 softdep_move_dependencies(bp, newbp) == 0) 2291 bundirty(bp); 2292 #else 2293 bundirty(bp); 2294 #endif 2295 2296 /* 2297 * Initiate write on the copy, release the original. The 2298 * BKGRDINPROG flag prevents it from going away until 2299 * the background write completes. We have to recalculate 2300 * its check hash in case the buffer gets freed and then 2301 * reconstituted from the buffer cache during a later read. 2302 */ 2303 if ((bp->b_xflags & BX_CYLGRP) != 0) { 2304 cgp = (struct cg *)bp->b_data; 2305 cgp->cg_ckhash = 0; 2306 cgp->cg_ckhash = 2307 calculate_crc32c(~0L, bp->b_data, bp->b_bcount); 2308 } 2309 bqrelse(bp); 2310 bp = newbp; 2311 } else 2312 /* Mark the buffer clean */ 2313 bundirty(bp); 2314 2315 2316 /* Let the normal bufwrite do the rest for us */ 2317 normal_write: 2318 /* 2319 * If we are writing a cylinder group, update its time. 2320 */ 2321 if ((bp->b_xflags & BX_CYLGRP) != 0) { 2322 cgp = (struct cg *)bp->b_data; 2323 cgp->cg_old_time = cgp->cg_time = time_second; 2324 } 2325 return (bufwrite(bp)); 2326 } 2327 2328 2329 static void 2330 ffs_geom_strategy(struct bufobj *bo, struct buf *bp) 2331 { 2332 struct vnode *vp; 2333 struct buf *tbp; 2334 int error, nocopy; 2335 2336 /* 2337 * This is the bufobj strategy for the private VCHR vnodes 2338 * used by FFS to access the underlying storage device. 2339 * We override the default bufobj strategy and thus bypass 2340 * VOP_STRATEGY() for these vnodes. 2341 */ 2342 vp = bo2vnode(bo); 2343 KASSERT(bp->b_vp == NULL || bp->b_vp->v_type != VCHR || 2344 bp->b_vp->v_rdev == NULL || 2345 bp->b_vp->v_rdev->si_mountpt == NULL || 2346 VFSTOUFS(bp->b_vp->v_rdev->si_mountpt) == NULL || 2347 vp == VFSTOUFS(bp->b_vp->v_rdev->si_mountpt)->um_devvp, 2348 ("ffs_geom_strategy() with wrong vp")); 2349 if (bp->b_iocmd == BIO_WRITE) { 2350 if ((bp->b_flags & B_VALIDSUSPWRT) == 0 && 2351 bp->b_vp != NULL && bp->b_vp->v_mount != NULL && 2352 (bp->b_vp->v_mount->mnt_kern_flag & MNTK_SUSPENDED) != 0) 2353 panic("ffs_geom_strategy: bad I/O"); 2354 nocopy = bp->b_flags & B_NOCOPY; 2355 bp->b_flags &= ~(B_VALIDSUSPWRT | B_NOCOPY); 2356 if ((vp->v_vflag & VV_COPYONWRITE) && nocopy == 0 && 2357 vp->v_rdev->si_snapdata != NULL) { 2358 if ((bp->b_flags & B_CLUSTER) != 0) { 2359 runningbufwakeup(bp); 2360 TAILQ_FOREACH(tbp, &bp->b_cluster.cluster_head, 2361 b_cluster.cluster_entry) { 2362 error = ffs_copyonwrite(vp, tbp); 2363 if (error != 0 && 2364 error != EOPNOTSUPP) { 2365 bp->b_error = error; 2366 bp->b_ioflags |= BIO_ERROR; 2367 bufdone(bp); 2368 return; 2369 } 2370 } 2371 bp->b_runningbufspace = bp->b_bufsize; 2372 atomic_add_long(&runningbufspace, 2373 bp->b_runningbufspace); 2374 } else { 2375 error = ffs_copyonwrite(vp, bp); 2376 if (error != 0 && error != EOPNOTSUPP) { 2377 bp->b_error = error; 2378 bp->b_ioflags |= BIO_ERROR; 2379 bufdone(bp); 2380 return; 2381 } 2382 } 2383 } 2384 #ifdef SOFTUPDATES 2385 if ((bp->b_flags & B_CLUSTER) != 0) { 2386 TAILQ_FOREACH(tbp, &bp->b_cluster.cluster_head, 2387 b_cluster.cluster_entry) { 2388 if (!LIST_EMPTY(&tbp->b_dep)) 2389 buf_start(tbp); 2390 } 2391 } else { 2392 if (!LIST_EMPTY(&bp->b_dep)) 2393 buf_start(bp); 2394 } 2395 2396 #endif 2397 /* 2398 * Check for metadata that needs check-hashes and update them. 2399 */ 2400 switch (bp->b_xflags & BX_FSPRIV) { 2401 case BX_CYLGRP: 2402 ((struct cg *)bp->b_data)->cg_ckhash = 0; 2403 ((struct cg *)bp->b_data)->cg_ckhash = 2404 calculate_crc32c(~0L, bp->b_data, bp->b_bcount); 2405 break; 2406 2407 case BX_SUPERBLOCK: 2408 case BX_INODE: 2409 case BX_INDIR: 2410 case BX_DIR: 2411 printf("Check-hash write is unimplemented!!!\n"); 2412 break; 2413 2414 case 0: 2415 break; 2416 2417 default: 2418 printf("multiple buffer types 0x%b\n", 2419 (u_int)(bp->b_xflags & BX_FSPRIV), 2420 PRINT_UFS_BUF_XFLAGS); 2421 break; 2422 } 2423 } 2424 if (bp->b_iocmd != BIO_READ && ffs_enxio_enable) 2425 bp->b_xflags |= BX_CVTENXIO; 2426 g_vfs_strategy(bo, bp); 2427 } 2428 2429 int 2430 ffs_own_mount(const struct mount *mp) 2431 { 2432 2433 if (mp->mnt_op == &ufs_vfsops) 2434 return (1); 2435 return (0); 2436 } 2437 2438 #ifdef DDB 2439 #ifdef SOFTUPDATES 2440 2441 /* defined in ffs_softdep.c */ 2442 extern void db_print_ffs(struct ufsmount *ump); 2443 2444 DB_SHOW_COMMAND(ffs, db_show_ffs) 2445 { 2446 struct mount *mp; 2447 struct ufsmount *ump; 2448 2449 if (have_addr) { 2450 ump = VFSTOUFS((struct mount *)addr); 2451 db_print_ffs(ump); 2452 return; 2453 } 2454 2455 TAILQ_FOREACH(mp, &mountlist, mnt_list) { 2456 if (!strcmp(mp->mnt_stat.f_fstypename, ufs_vfsconf.vfc_name)) 2457 db_print_ffs(VFSTOUFS(mp)); 2458 } 2459 } 2460 2461 #endif /* SOFTUPDATES */ 2462 #endif /* DDB */ 2463