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 struct export_args exp; 600 int error; 601 602 if (data == NULL) 603 return (EINVAL); 604 error = copyin(data, &args, sizeof args); 605 if (error) 606 return (error); 607 vfs_oexport_conv(&args.export, &exp); 608 609 ma = mount_argsu(ma, "from", args.fspec, MAXPATHLEN); 610 ma = mount_arg(ma, "export", &exp, sizeof(exp)); 611 error = kernel_mount(ma, flags); 612 613 return (error); 614 } 615 616 /* 617 * Reload all incore data for a filesystem (used after running fsck on 618 * the root filesystem and finding things to fix). If the 'force' flag 619 * is 0, the filesystem must be mounted read-only. 620 * 621 * Things to do to update the mount: 622 * 1) invalidate all cached meta-data. 623 * 2) re-read superblock from disk. 624 * 3) re-read summary information from disk. 625 * 4) invalidate all inactive vnodes. 626 * 5) clear MNTK_SUSPEND2 and MNTK_SUSPENDED flags, allowing secondary 627 * writers, if requested. 628 * 6) invalidate all cached file data. 629 * 7) re-read inode data for all active vnodes. 630 */ 631 int 632 ffs_reload(struct mount *mp, struct thread *td, int flags) 633 { 634 struct vnode *vp, *mvp, *devvp; 635 struct inode *ip; 636 void *space; 637 struct buf *bp; 638 struct fs *fs, *newfs; 639 struct ufsmount *ump; 640 ufs2_daddr_t sblockloc; 641 int i, blks, error; 642 u_long size; 643 int32_t *lp; 644 645 ump = VFSTOUFS(mp); 646 647 MNT_ILOCK(mp); 648 if ((mp->mnt_flag & MNT_RDONLY) == 0 && (flags & FFSR_FORCE) == 0) { 649 MNT_IUNLOCK(mp); 650 return (EINVAL); 651 } 652 MNT_IUNLOCK(mp); 653 654 /* 655 * Step 1: invalidate all cached meta-data. 656 */ 657 devvp = VFSTOUFS(mp)->um_devvp; 658 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 659 if (vinvalbuf(devvp, 0, 0, 0) != 0) 660 panic("ffs_reload: dirty1"); 661 VOP_UNLOCK(devvp); 662 663 /* 664 * Step 2: re-read superblock from disk. 665 */ 666 fs = VFSTOUFS(mp)->um_fs; 667 if ((error = bread(devvp, btodb(fs->fs_sblockloc), fs->fs_sbsize, 668 NOCRED, &bp)) != 0) 669 return (error); 670 newfs = (struct fs *)bp->b_data; 671 if ((newfs->fs_magic != FS_UFS1_MAGIC && 672 newfs->fs_magic != FS_UFS2_MAGIC) || 673 newfs->fs_bsize > MAXBSIZE || 674 newfs->fs_bsize < sizeof(struct fs)) { 675 brelse(bp); 676 return (EIO); /* XXX needs translation */ 677 } 678 /* 679 * Copy pointer fields back into superblock before copying in XXX 680 * new superblock. These should really be in the ufsmount. XXX 681 * Note that important parameters (eg fs_ncg) are unchanged. 682 */ 683 newfs->fs_csp = fs->fs_csp; 684 newfs->fs_maxcluster = fs->fs_maxcluster; 685 newfs->fs_contigdirs = fs->fs_contigdirs; 686 newfs->fs_active = fs->fs_active; 687 newfs->fs_ronly = fs->fs_ronly; 688 sblockloc = fs->fs_sblockloc; 689 bcopy(newfs, fs, (u_int)fs->fs_sbsize); 690 brelse(bp); 691 mp->mnt_maxsymlinklen = fs->fs_maxsymlinklen; 692 ffs_oldfscompat_read(fs, VFSTOUFS(mp), sblockloc); 693 UFS_LOCK(ump); 694 if (fs->fs_pendingblocks != 0 || fs->fs_pendinginodes != 0) { 695 printf("WARNING: %s: reload pending error: blocks %jd " 696 "files %d\n", fs->fs_fsmnt, (intmax_t)fs->fs_pendingblocks, 697 fs->fs_pendinginodes); 698 fs->fs_pendingblocks = 0; 699 fs->fs_pendinginodes = 0; 700 } 701 UFS_UNLOCK(ump); 702 703 /* 704 * Step 3: re-read summary information from disk. 705 */ 706 size = fs->fs_cssize; 707 blks = howmany(size, fs->fs_fsize); 708 if (fs->fs_contigsumsize > 0) 709 size += fs->fs_ncg * sizeof(int32_t); 710 size += fs->fs_ncg * sizeof(u_int8_t); 711 free(fs->fs_csp, M_UFSMNT); 712 space = malloc(size, M_UFSMNT, M_WAITOK); 713 fs->fs_csp = space; 714 for (i = 0; i < blks; i += fs->fs_frag) { 715 size = fs->fs_bsize; 716 if (i + fs->fs_frag > blks) 717 size = (blks - i) * fs->fs_fsize; 718 error = bread(devvp, fsbtodb(fs, fs->fs_csaddr + i), size, 719 NOCRED, &bp); 720 if (error) 721 return (error); 722 bcopy(bp->b_data, space, (u_int)size); 723 space = (char *)space + size; 724 brelse(bp); 725 } 726 /* 727 * We no longer know anything about clusters per cylinder group. 728 */ 729 if (fs->fs_contigsumsize > 0) { 730 fs->fs_maxcluster = lp = space; 731 for (i = 0; i < fs->fs_ncg; i++) 732 *lp++ = fs->fs_contigsumsize; 733 space = lp; 734 } 735 size = fs->fs_ncg * sizeof(u_int8_t); 736 fs->fs_contigdirs = (u_int8_t *)space; 737 bzero(fs->fs_contigdirs, size); 738 if ((flags & FFSR_UNSUSPEND) != 0) { 739 MNT_ILOCK(mp); 740 mp->mnt_kern_flag &= ~(MNTK_SUSPENDED | MNTK_SUSPEND2); 741 wakeup(&mp->mnt_flag); 742 MNT_IUNLOCK(mp); 743 } 744 745 loop: 746 MNT_VNODE_FOREACH_ALL(vp, mp, mvp) { 747 /* 748 * Skip syncer vnode. 749 */ 750 if (vp->v_type == VNON) { 751 VI_UNLOCK(vp); 752 continue; 753 } 754 /* 755 * Step 4: invalidate all cached file data. 756 */ 757 if (vget(vp, LK_EXCLUSIVE | LK_INTERLOCK, td)) { 758 MNT_VNODE_FOREACH_ALL_ABORT(mp, mvp); 759 goto loop; 760 } 761 if (vinvalbuf(vp, 0, 0, 0)) 762 panic("ffs_reload: dirty2"); 763 /* 764 * Step 5: re-read inode data for all active vnodes. 765 */ 766 ip = VTOI(vp); 767 error = 768 bread(devvp, fsbtodb(fs, ino_to_fsba(fs, ip->i_number)), 769 (int)fs->fs_bsize, NOCRED, &bp); 770 if (error) { 771 vput(vp); 772 MNT_VNODE_FOREACH_ALL_ABORT(mp, mvp); 773 return (error); 774 } 775 if ((error = ffs_load_inode(bp, ip, fs, ip->i_number)) != 0) { 776 brelse(bp); 777 vput(vp); 778 MNT_VNODE_FOREACH_ALL_ABORT(mp, mvp); 779 return (error); 780 } 781 ip->i_effnlink = ip->i_nlink; 782 brelse(bp); 783 vput(vp); 784 } 785 return (0); 786 } 787 788 /* 789 * Common code for mount and mountroot 790 */ 791 static int 792 ffs_mountfs(odevvp, mp, td) 793 struct vnode *odevvp; 794 struct mount *mp; 795 struct thread *td; 796 { 797 struct ufsmount *ump; 798 struct fs *fs; 799 struct cdev *dev; 800 int error, i, len, ronly; 801 struct ucred *cred; 802 struct g_consumer *cp; 803 struct mount *nmp; 804 struct vnode *devvp; 805 struct fsfail_task *etp; 806 int candelete, canspeedup; 807 off_t loc; 808 809 fs = NULL; 810 ump = NULL; 811 cred = td ? td->td_ucred : NOCRED; 812 ronly = (mp->mnt_flag & MNT_RDONLY) != 0; 813 814 devvp = mntfs_allocvp(mp, odevvp); 815 VOP_UNLOCK(odevvp); 816 KASSERT(devvp->v_type == VCHR, ("reclaimed devvp")); 817 dev = devvp->v_rdev; 818 if (atomic_cmpset_acq_ptr((uintptr_t *)&dev->si_mountpt, 0, 819 (uintptr_t)mp) == 0) { 820 mntfs_freevp(devvp); 821 return (EBUSY); 822 } 823 g_topology_lock(); 824 error = g_vfs_open(devvp, &cp, "ffs", ronly ? 0 : 1); 825 g_topology_unlock(); 826 if (error != 0) { 827 atomic_store_rel_ptr((uintptr_t *)&dev->si_mountpt, 0); 828 mntfs_freevp(devvp); 829 return (error); 830 } 831 dev_ref(dev); 832 devvp->v_bufobj.bo_ops = &ffs_ops; 833 BO_LOCK(&odevvp->v_bufobj); 834 odevvp->v_bufobj.bo_flag |= BO_NOBUFS; 835 BO_UNLOCK(&odevvp->v_bufobj); 836 if (dev->si_iosize_max != 0) 837 mp->mnt_iosize_max = dev->si_iosize_max; 838 if (mp->mnt_iosize_max > MAXPHYS) 839 mp->mnt_iosize_max = MAXPHYS; 840 if ((SBLOCKSIZE % cp->provider->sectorsize) != 0) { 841 error = EINVAL; 842 vfs_mount_error(mp, 843 "Invalid sectorsize %d for superblock size %d", 844 cp->provider->sectorsize, SBLOCKSIZE); 845 goto out; 846 } 847 /* fetch the superblock and summary information */ 848 loc = STDSB; 849 if ((mp->mnt_flag & MNT_ROOTFS) != 0) 850 loc = STDSB_NOHASHFAIL; 851 if ((error = ffs_sbget(devvp, &fs, loc, M_UFSMNT, ffs_use_bread)) != 0) 852 goto out; 853 /* none of these types of check-hashes are maintained by this kernel */ 854 fs->fs_metackhash &= ~(CK_INDIR | CK_DIR); 855 /* no support for any undefined flags */ 856 fs->fs_flags &= FS_SUPPORTED; 857 fs->fs_flags &= ~FS_UNCLEAN; 858 if (fs->fs_clean == 0) { 859 fs->fs_flags |= FS_UNCLEAN; 860 if (ronly || (mp->mnt_flag & MNT_FORCE) || 861 ((fs->fs_flags & (FS_SUJ | FS_NEEDSFSCK)) == 0 && 862 (fs->fs_flags & FS_DOSOFTDEP))) { 863 printf("WARNING: %s was not properly dismounted\n", 864 fs->fs_fsmnt); 865 } else { 866 vfs_mount_error(mp, "R/W mount of %s denied. %s%s", 867 fs->fs_fsmnt, "Filesystem is not clean - run fsck.", 868 (fs->fs_flags & FS_SUJ) == 0 ? "" : 869 " Forced mount will invalidate journal contents"); 870 error = EPERM; 871 goto out; 872 } 873 if ((fs->fs_pendingblocks != 0 || fs->fs_pendinginodes != 0) && 874 (mp->mnt_flag & MNT_FORCE)) { 875 printf("WARNING: %s: lost blocks %jd files %d\n", 876 fs->fs_fsmnt, (intmax_t)fs->fs_pendingblocks, 877 fs->fs_pendinginodes); 878 fs->fs_pendingblocks = 0; 879 fs->fs_pendinginodes = 0; 880 } 881 } 882 if (fs->fs_pendingblocks != 0 || fs->fs_pendinginodes != 0) { 883 printf("WARNING: %s: mount pending error: blocks %jd " 884 "files %d\n", fs->fs_fsmnt, (intmax_t)fs->fs_pendingblocks, 885 fs->fs_pendinginodes); 886 fs->fs_pendingblocks = 0; 887 fs->fs_pendinginodes = 0; 888 } 889 if ((fs->fs_flags & FS_GJOURNAL) != 0) { 890 #ifdef UFS_GJOURNAL 891 /* 892 * Get journal provider name. 893 */ 894 len = 1024; 895 mp->mnt_gjprovider = malloc((u_long)len, M_UFSMNT, M_WAITOK); 896 if (g_io_getattr("GJOURNAL::provider", cp, &len, 897 mp->mnt_gjprovider) == 0) { 898 mp->mnt_gjprovider = realloc(mp->mnt_gjprovider, len, 899 M_UFSMNT, M_WAITOK); 900 MNT_ILOCK(mp); 901 mp->mnt_flag |= MNT_GJOURNAL; 902 MNT_IUNLOCK(mp); 903 } else { 904 printf("WARNING: %s: GJOURNAL flag on fs " 905 "but no gjournal provider below\n", 906 mp->mnt_stat.f_mntonname); 907 free(mp->mnt_gjprovider, M_UFSMNT); 908 mp->mnt_gjprovider = NULL; 909 } 910 #else 911 printf("WARNING: %s: GJOURNAL flag on fs but no " 912 "UFS_GJOURNAL support\n", mp->mnt_stat.f_mntonname); 913 #endif 914 } else { 915 mp->mnt_gjprovider = NULL; 916 } 917 ump = malloc(sizeof *ump, M_UFSMNT, M_WAITOK | M_ZERO); 918 ump->um_cp = cp; 919 ump->um_bo = &devvp->v_bufobj; 920 ump->um_fs = fs; 921 if (fs->fs_magic == FS_UFS1_MAGIC) { 922 ump->um_fstype = UFS1; 923 ump->um_balloc = ffs_balloc_ufs1; 924 } else { 925 ump->um_fstype = UFS2; 926 ump->um_balloc = ffs_balloc_ufs2; 927 } 928 ump->um_blkatoff = ffs_blkatoff; 929 ump->um_truncate = ffs_truncate; 930 ump->um_update = ffs_update; 931 ump->um_valloc = ffs_valloc; 932 ump->um_vfree = ffs_vfree; 933 ump->um_ifree = ffs_ifree; 934 ump->um_rdonly = ffs_rdonly; 935 ump->um_snapgone = ffs_snapgone; 936 if ((mp->mnt_flag & MNT_UNTRUSTED) != 0) 937 ump->um_check_blkno = ffs_check_blkno; 938 else 939 ump->um_check_blkno = NULL; 940 mtx_init(UFS_MTX(ump), "FFS", "FFS Lock", MTX_DEF); 941 ffs_oldfscompat_read(fs, ump, fs->fs_sblockloc); 942 fs->fs_ronly = ronly; 943 fs->fs_active = NULL; 944 mp->mnt_data = ump; 945 mp->mnt_stat.f_fsid.val[0] = fs->fs_id[0]; 946 mp->mnt_stat.f_fsid.val[1] = fs->fs_id[1]; 947 nmp = NULL; 948 if (fs->fs_id[0] == 0 || fs->fs_id[1] == 0 || 949 (nmp = vfs_getvfs(&mp->mnt_stat.f_fsid))) { 950 if (nmp) 951 vfs_rel(nmp); 952 vfs_getnewfsid(mp); 953 } 954 mp->mnt_maxsymlinklen = fs->fs_maxsymlinklen; 955 MNT_ILOCK(mp); 956 mp->mnt_flag |= MNT_LOCAL; 957 MNT_IUNLOCK(mp); 958 if ((fs->fs_flags & FS_MULTILABEL) != 0) { 959 #ifdef MAC 960 MNT_ILOCK(mp); 961 mp->mnt_flag |= MNT_MULTILABEL; 962 MNT_IUNLOCK(mp); 963 #else 964 printf("WARNING: %s: multilabel flag on fs but " 965 "no MAC support\n", mp->mnt_stat.f_mntonname); 966 #endif 967 } 968 if ((fs->fs_flags & FS_ACLS) != 0) { 969 #ifdef UFS_ACL 970 MNT_ILOCK(mp); 971 972 if (mp->mnt_flag & MNT_NFS4ACLS) 973 printf("WARNING: %s: ACLs flag on fs conflicts with " 974 "\"nfsv4acls\" mount option; option ignored\n", 975 mp->mnt_stat.f_mntonname); 976 mp->mnt_flag &= ~MNT_NFS4ACLS; 977 mp->mnt_flag |= MNT_ACLS; 978 979 MNT_IUNLOCK(mp); 980 #else 981 printf("WARNING: %s: ACLs flag on fs but no ACLs support\n", 982 mp->mnt_stat.f_mntonname); 983 #endif 984 } 985 if ((fs->fs_flags & FS_NFS4ACLS) != 0) { 986 #ifdef UFS_ACL 987 MNT_ILOCK(mp); 988 989 if (mp->mnt_flag & MNT_ACLS) 990 printf("WARNING: %s: NFSv4 ACLs flag on fs conflicts " 991 "with \"acls\" mount option; option ignored\n", 992 mp->mnt_stat.f_mntonname); 993 mp->mnt_flag &= ~MNT_ACLS; 994 mp->mnt_flag |= MNT_NFS4ACLS; 995 996 MNT_IUNLOCK(mp); 997 #else 998 printf("WARNING: %s: NFSv4 ACLs flag on fs but no " 999 "ACLs support\n", mp->mnt_stat.f_mntonname); 1000 #endif 1001 } 1002 if ((fs->fs_flags & FS_TRIM) != 0) { 1003 len = sizeof(int); 1004 if (g_io_getattr("GEOM::candelete", cp, &len, 1005 &candelete) == 0) { 1006 if (candelete) 1007 ump->um_flags |= UM_CANDELETE; 1008 else 1009 printf("WARNING: %s: TRIM flag on fs but disk " 1010 "does not support TRIM\n", 1011 mp->mnt_stat.f_mntonname); 1012 } else { 1013 printf("WARNING: %s: TRIM flag on fs but disk does " 1014 "not confirm that it supports TRIM\n", 1015 mp->mnt_stat.f_mntonname); 1016 } 1017 if (((ump->um_flags) & UM_CANDELETE) != 0) { 1018 ump->um_trim_tq = taskqueue_create("trim", M_WAITOK, 1019 taskqueue_thread_enqueue, &ump->um_trim_tq); 1020 taskqueue_start_threads(&ump->um_trim_tq, 1, PVFS, 1021 "%s trim", mp->mnt_stat.f_mntonname); 1022 ump->um_trimhash = hashinit(MAXTRIMIO, M_TRIM, 1023 &ump->um_trimlisthashsize); 1024 } 1025 } 1026 1027 len = sizeof(int); 1028 if (g_io_getattr("GEOM::canspeedup", cp, &len, &canspeedup) == 0) { 1029 if (canspeedup) 1030 ump->um_flags |= UM_CANSPEEDUP; 1031 } 1032 1033 ump->um_mountp = mp; 1034 ump->um_dev = dev; 1035 ump->um_devvp = devvp; 1036 ump->um_odevvp = odevvp; 1037 ump->um_nindir = fs->fs_nindir; 1038 ump->um_bptrtodb = fs->fs_fsbtodb; 1039 ump->um_seqinc = fs->fs_frag; 1040 for (i = 0; i < MAXQUOTAS; i++) 1041 ump->um_quotas[i] = NULLVP; 1042 #ifdef UFS_EXTATTR 1043 ufs_extattr_uepm_init(&ump->um_extattr); 1044 #endif 1045 /* 1046 * Set FS local "last mounted on" information (NULL pad) 1047 */ 1048 bzero(fs->fs_fsmnt, MAXMNTLEN); 1049 strlcpy(fs->fs_fsmnt, mp->mnt_stat.f_mntonname, MAXMNTLEN); 1050 mp->mnt_stat.f_iosize = fs->fs_bsize; 1051 1052 if (mp->mnt_flag & MNT_ROOTFS) { 1053 /* 1054 * Root mount; update timestamp in mount structure. 1055 * this will be used by the common root mount code 1056 * to update the system clock. 1057 */ 1058 mp->mnt_time = fs->fs_time; 1059 } 1060 1061 if (ronly == 0) { 1062 fs->fs_mtime = time_second; 1063 if ((fs->fs_flags & FS_DOSOFTDEP) && 1064 (error = softdep_mount(devvp, mp, fs, cred)) != 0) { 1065 ffs_flushfiles(mp, FORCECLOSE, td); 1066 goto out; 1067 } 1068 if (fs->fs_snapinum[0] != 0) 1069 ffs_snapshot_mount(mp); 1070 fs->fs_fmod = 1; 1071 fs->fs_clean = 0; 1072 (void) ffs_sbupdate(ump, MNT_WAIT, 0); 1073 } 1074 /* 1075 * Initialize filesystem state information in mount struct. 1076 */ 1077 MNT_ILOCK(mp); 1078 mp->mnt_kern_flag |= MNTK_LOOKUP_SHARED | MNTK_EXTENDED_SHARED | 1079 MNTK_NO_IOPF | MNTK_UNMAPPED_BUFS | MNTK_USES_BCACHE; 1080 MNT_IUNLOCK(mp); 1081 #ifdef UFS_EXTATTR 1082 #ifdef UFS_EXTATTR_AUTOSTART 1083 /* 1084 * 1085 * Auto-starting does the following: 1086 * - check for /.attribute in the fs, and extattr_start if so 1087 * - for each file in .attribute, enable that file with 1088 * an attribute of the same name. 1089 * Not clear how to report errors -- probably eat them. 1090 * This would all happen while the filesystem was busy/not 1091 * available, so would effectively be "atomic". 1092 */ 1093 (void) ufs_extattr_autostart(mp, td); 1094 #endif /* !UFS_EXTATTR_AUTOSTART */ 1095 #endif /* !UFS_EXTATTR */ 1096 etp = malloc(sizeof *ump->um_fsfail_task, M_UFSMNT, M_WAITOK | M_ZERO); 1097 etp->fsid = mp->mnt_stat.f_fsid; 1098 ump->um_fsfail_task = etp; 1099 return (0); 1100 out: 1101 if (fs != NULL) { 1102 free(fs->fs_csp, M_UFSMNT); 1103 free(fs, M_UFSMNT); 1104 } 1105 if (cp != NULL) { 1106 g_topology_lock(); 1107 g_vfs_close(cp); 1108 g_topology_unlock(); 1109 } 1110 if (ump) { 1111 mtx_destroy(UFS_MTX(ump)); 1112 if (mp->mnt_gjprovider != NULL) { 1113 free(mp->mnt_gjprovider, M_UFSMNT); 1114 mp->mnt_gjprovider = NULL; 1115 } 1116 free(ump, M_UFSMNT); 1117 mp->mnt_data = NULL; 1118 } 1119 BO_LOCK(&odevvp->v_bufobj); 1120 odevvp->v_bufobj.bo_flag &= ~BO_NOBUFS; 1121 BO_UNLOCK(&odevvp->v_bufobj); 1122 atomic_store_rel_ptr((uintptr_t *)&dev->si_mountpt, 0); 1123 mntfs_freevp(devvp); 1124 dev_rel(dev); 1125 return (error); 1126 } 1127 1128 /* 1129 * A read function for use by filesystem-layer routines. 1130 */ 1131 static int 1132 ffs_use_bread(void *devfd, off_t loc, void **bufp, int size) 1133 { 1134 struct buf *bp; 1135 int error; 1136 1137 KASSERT(*bufp == NULL, ("ffs_use_bread: non-NULL *bufp %p\n", *bufp)); 1138 *bufp = malloc(size, M_UFSMNT, M_WAITOK); 1139 if ((error = bread((struct vnode *)devfd, btodb(loc), size, NOCRED, 1140 &bp)) != 0) 1141 return (error); 1142 bcopy(bp->b_data, *bufp, size); 1143 bp->b_flags |= B_INVAL | B_NOCACHE; 1144 brelse(bp); 1145 return (0); 1146 } 1147 1148 static int bigcgs = 0; 1149 SYSCTL_INT(_debug, OID_AUTO, bigcgs, CTLFLAG_RW, &bigcgs, 0, ""); 1150 1151 /* 1152 * Sanity checks for loading old filesystem superblocks. 1153 * See ffs_oldfscompat_write below for unwound actions. 1154 * 1155 * XXX - Parts get retired eventually. 1156 * Unfortunately new bits get added. 1157 */ 1158 static void 1159 ffs_oldfscompat_read(fs, ump, sblockloc) 1160 struct fs *fs; 1161 struct ufsmount *ump; 1162 ufs2_daddr_t sblockloc; 1163 { 1164 off_t maxfilesize; 1165 1166 /* 1167 * If not yet done, update fs_flags location and value of fs_sblockloc. 1168 */ 1169 if ((fs->fs_old_flags & FS_FLAGS_UPDATED) == 0) { 1170 fs->fs_flags = fs->fs_old_flags; 1171 fs->fs_old_flags |= FS_FLAGS_UPDATED; 1172 fs->fs_sblockloc = sblockloc; 1173 } 1174 /* 1175 * If not yet done, update UFS1 superblock with new wider fields. 1176 */ 1177 if (fs->fs_magic == FS_UFS1_MAGIC && fs->fs_maxbsize != fs->fs_bsize) { 1178 fs->fs_maxbsize = fs->fs_bsize; 1179 fs->fs_time = fs->fs_old_time; 1180 fs->fs_size = fs->fs_old_size; 1181 fs->fs_dsize = fs->fs_old_dsize; 1182 fs->fs_csaddr = fs->fs_old_csaddr; 1183 fs->fs_cstotal.cs_ndir = fs->fs_old_cstotal.cs_ndir; 1184 fs->fs_cstotal.cs_nbfree = fs->fs_old_cstotal.cs_nbfree; 1185 fs->fs_cstotal.cs_nifree = fs->fs_old_cstotal.cs_nifree; 1186 fs->fs_cstotal.cs_nffree = fs->fs_old_cstotal.cs_nffree; 1187 } 1188 if (fs->fs_magic == FS_UFS1_MAGIC && 1189 fs->fs_old_inodefmt < FS_44INODEFMT) { 1190 fs->fs_maxfilesize = ((uint64_t)1 << 31) - 1; 1191 fs->fs_qbmask = ~fs->fs_bmask; 1192 fs->fs_qfmask = ~fs->fs_fmask; 1193 } 1194 if (fs->fs_magic == FS_UFS1_MAGIC) { 1195 ump->um_savedmaxfilesize = fs->fs_maxfilesize; 1196 maxfilesize = (uint64_t)0x80000000 * fs->fs_bsize - 1; 1197 if (fs->fs_maxfilesize > maxfilesize) 1198 fs->fs_maxfilesize = maxfilesize; 1199 } 1200 /* Compatibility for old filesystems */ 1201 if (fs->fs_avgfilesize <= 0) 1202 fs->fs_avgfilesize = AVFILESIZ; 1203 if (fs->fs_avgfpdir <= 0) 1204 fs->fs_avgfpdir = AFPDIR; 1205 if (bigcgs) { 1206 fs->fs_save_cgsize = fs->fs_cgsize; 1207 fs->fs_cgsize = fs->fs_bsize; 1208 } 1209 } 1210 1211 /* 1212 * Unwinding superblock updates for old filesystems. 1213 * See ffs_oldfscompat_read above for details. 1214 * 1215 * XXX - Parts get retired eventually. 1216 * Unfortunately new bits get added. 1217 */ 1218 void 1219 ffs_oldfscompat_write(fs, ump) 1220 struct fs *fs; 1221 struct ufsmount *ump; 1222 { 1223 1224 /* 1225 * Copy back UFS2 updated fields that UFS1 inspects. 1226 */ 1227 if (fs->fs_magic == FS_UFS1_MAGIC) { 1228 fs->fs_old_time = fs->fs_time; 1229 fs->fs_old_cstotal.cs_ndir = fs->fs_cstotal.cs_ndir; 1230 fs->fs_old_cstotal.cs_nbfree = fs->fs_cstotal.cs_nbfree; 1231 fs->fs_old_cstotal.cs_nifree = fs->fs_cstotal.cs_nifree; 1232 fs->fs_old_cstotal.cs_nffree = fs->fs_cstotal.cs_nffree; 1233 fs->fs_maxfilesize = ump->um_savedmaxfilesize; 1234 } 1235 if (bigcgs) { 1236 fs->fs_cgsize = fs->fs_save_cgsize; 1237 fs->fs_save_cgsize = 0; 1238 } 1239 } 1240 1241 /* 1242 * unmount system call 1243 */ 1244 static int 1245 ffs_unmount(mp, mntflags) 1246 struct mount *mp; 1247 int mntflags; 1248 { 1249 struct thread *td; 1250 struct ufsmount *ump = VFSTOUFS(mp); 1251 struct fs *fs; 1252 int error, flags, susp; 1253 #ifdef UFS_EXTATTR 1254 int e_restart; 1255 #endif 1256 1257 flags = 0; 1258 td = curthread; 1259 fs = ump->um_fs; 1260 if (mntflags & MNT_FORCE) 1261 flags |= FORCECLOSE; 1262 susp = fs->fs_ronly == 0; 1263 #ifdef UFS_EXTATTR 1264 if ((error = ufs_extattr_stop(mp, td))) { 1265 if (error != EOPNOTSUPP) 1266 printf("WARNING: unmount %s: ufs_extattr_stop " 1267 "returned errno %d\n", mp->mnt_stat.f_mntonname, 1268 error); 1269 e_restart = 0; 1270 } else { 1271 ufs_extattr_uepm_destroy(&ump->um_extattr); 1272 e_restart = 1; 1273 } 1274 #endif 1275 if (susp) { 1276 error = vfs_write_suspend_umnt(mp); 1277 if (error != 0) 1278 goto fail1; 1279 } 1280 if (MOUNTEDSOFTDEP(mp)) 1281 error = softdep_flushfiles(mp, flags, td); 1282 else 1283 error = ffs_flushfiles(mp, flags, td); 1284 if (error != 0 && !ffs_fsfail_cleanup(ump, error)) 1285 goto fail; 1286 1287 UFS_LOCK(ump); 1288 if (fs->fs_pendingblocks != 0 || fs->fs_pendinginodes != 0) { 1289 printf("WARNING: unmount %s: pending error: blocks %jd " 1290 "files %d\n", fs->fs_fsmnt, (intmax_t)fs->fs_pendingblocks, 1291 fs->fs_pendinginodes); 1292 fs->fs_pendingblocks = 0; 1293 fs->fs_pendinginodes = 0; 1294 } 1295 UFS_UNLOCK(ump); 1296 if (MOUNTEDSOFTDEP(mp)) 1297 softdep_unmount(mp); 1298 if (fs->fs_ronly == 0 || ump->um_fsckpid > 0) { 1299 fs->fs_clean = fs->fs_flags & (FS_UNCLEAN|FS_NEEDSFSCK) ? 0 : 1; 1300 error = ffs_sbupdate(ump, MNT_WAIT, 0); 1301 if (ffs_fsfail_cleanup(ump, error)) 1302 error = 0; 1303 if (error != 0 && !ffs_fsfail_cleanup(ump, error)) { 1304 fs->fs_clean = 0; 1305 goto fail; 1306 } 1307 } 1308 if (susp) 1309 vfs_write_resume(mp, VR_START_WRITE); 1310 if (ump->um_trim_tq != NULL) { 1311 while (ump->um_trim_inflight != 0) 1312 pause("ufsutr", hz); 1313 taskqueue_drain_all(ump->um_trim_tq); 1314 taskqueue_free(ump->um_trim_tq); 1315 free (ump->um_trimhash, M_TRIM); 1316 } 1317 g_topology_lock(); 1318 if (ump->um_fsckpid > 0) { 1319 /* 1320 * Return to normal read-only mode. 1321 */ 1322 error = g_access(ump->um_cp, 0, -1, 0); 1323 ump->um_fsckpid = 0; 1324 } 1325 g_vfs_close(ump->um_cp); 1326 g_topology_unlock(); 1327 BO_LOCK(&ump->um_odevvp->v_bufobj); 1328 ump->um_odevvp->v_bufobj.bo_flag &= ~BO_NOBUFS; 1329 BO_UNLOCK(&ump->um_odevvp->v_bufobj); 1330 atomic_store_rel_ptr((uintptr_t *)&ump->um_dev->si_mountpt, 0); 1331 mntfs_freevp(ump->um_devvp); 1332 vrele(ump->um_odevvp); 1333 dev_rel(ump->um_dev); 1334 mtx_destroy(UFS_MTX(ump)); 1335 if (mp->mnt_gjprovider != NULL) { 1336 free(mp->mnt_gjprovider, M_UFSMNT); 1337 mp->mnt_gjprovider = NULL; 1338 } 1339 free(fs->fs_csp, M_UFSMNT); 1340 free(fs, M_UFSMNT); 1341 if (ump->um_fsfail_task != NULL) 1342 free(ump->um_fsfail_task, M_UFSMNT); 1343 free(ump, M_UFSMNT); 1344 mp->mnt_data = NULL; 1345 MNT_ILOCK(mp); 1346 mp->mnt_flag &= ~MNT_LOCAL; 1347 MNT_IUNLOCK(mp); 1348 if (td->td_su == mp) { 1349 td->td_su = NULL; 1350 vfs_rel(mp); 1351 } 1352 return (error); 1353 1354 fail: 1355 if (susp) 1356 vfs_write_resume(mp, VR_START_WRITE); 1357 fail1: 1358 #ifdef UFS_EXTATTR 1359 if (e_restart) { 1360 ufs_extattr_uepm_init(&ump->um_extattr); 1361 #ifdef UFS_EXTATTR_AUTOSTART 1362 (void) ufs_extattr_autostart(mp, td); 1363 #endif 1364 } 1365 #endif 1366 1367 return (error); 1368 } 1369 1370 /* 1371 * Flush out all the files in a filesystem. 1372 */ 1373 int 1374 ffs_flushfiles(mp, flags, td) 1375 struct mount *mp; 1376 int flags; 1377 struct thread *td; 1378 { 1379 struct ufsmount *ump; 1380 int qerror, error; 1381 1382 ump = VFSTOUFS(mp); 1383 qerror = 0; 1384 #ifdef QUOTA 1385 if (mp->mnt_flag & MNT_QUOTA) { 1386 int i; 1387 error = vflush(mp, 0, SKIPSYSTEM|flags, td); 1388 if (error) 1389 return (error); 1390 for (i = 0; i < MAXQUOTAS; i++) { 1391 error = quotaoff(td, mp, i); 1392 if (error != 0) { 1393 if ((flags & EARLYFLUSH) == 0) 1394 return (error); 1395 else 1396 qerror = error; 1397 } 1398 } 1399 1400 /* 1401 * Here we fall through to vflush again to ensure that 1402 * we have gotten rid of all the system vnodes, unless 1403 * quotas must not be closed. 1404 */ 1405 } 1406 #endif 1407 ASSERT_VOP_LOCKED(ump->um_devvp, "ffs_flushfiles"); 1408 if (ump->um_devvp->v_vflag & VV_COPYONWRITE) { 1409 if ((error = vflush(mp, 0, SKIPSYSTEM | flags, td)) != 0) 1410 return (error); 1411 ffs_snapshot_unmount(mp); 1412 flags |= FORCECLOSE; 1413 /* 1414 * Here we fall through to vflush again to ensure 1415 * that we have gotten rid of all the system vnodes. 1416 */ 1417 } 1418 1419 /* 1420 * Do not close system files if quotas were not closed, to be 1421 * able to sync the remaining dquots. The freeblks softupdate 1422 * workitems might hold a reference on a dquot, preventing 1423 * quotaoff() from completing. Next round of 1424 * softdep_flushworklist() iteration should process the 1425 * blockers, allowing the next run of quotaoff() to finally 1426 * flush held dquots. 1427 * 1428 * Otherwise, flush all the files. 1429 */ 1430 if (qerror == 0 && (error = vflush(mp, 0, flags, td)) != 0) 1431 return (error); 1432 1433 /* 1434 * Flush filesystem metadata. 1435 */ 1436 vn_lock(ump->um_devvp, LK_EXCLUSIVE | LK_RETRY); 1437 error = VOP_FSYNC(ump->um_devvp, MNT_WAIT, td); 1438 VOP_UNLOCK(ump->um_devvp); 1439 return (error); 1440 } 1441 1442 /* 1443 * Get filesystem statistics. 1444 */ 1445 static int 1446 ffs_statfs(mp, sbp) 1447 struct mount *mp; 1448 struct statfs *sbp; 1449 { 1450 struct ufsmount *ump; 1451 struct fs *fs; 1452 1453 ump = VFSTOUFS(mp); 1454 fs = ump->um_fs; 1455 if (fs->fs_magic != FS_UFS1_MAGIC && fs->fs_magic != FS_UFS2_MAGIC) 1456 panic("ffs_statfs"); 1457 sbp->f_version = STATFS_VERSION; 1458 sbp->f_bsize = fs->fs_fsize; 1459 sbp->f_iosize = fs->fs_bsize; 1460 sbp->f_blocks = fs->fs_dsize; 1461 UFS_LOCK(ump); 1462 sbp->f_bfree = fs->fs_cstotal.cs_nbfree * fs->fs_frag + 1463 fs->fs_cstotal.cs_nffree + dbtofsb(fs, fs->fs_pendingblocks); 1464 sbp->f_bavail = freespace(fs, fs->fs_minfree) + 1465 dbtofsb(fs, fs->fs_pendingblocks); 1466 sbp->f_files = fs->fs_ncg * fs->fs_ipg - UFS_ROOTINO; 1467 sbp->f_ffree = fs->fs_cstotal.cs_nifree + fs->fs_pendinginodes; 1468 UFS_UNLOCK(ump); 1469 sbp->f_namemax = UFS_MAXNAMLEN; 1470 return (0); 1471 } 1472 1473 static bool 1474 sync_doupdate(struct inode *ip) 1475 { 1476 1477 return ((ip->i_flag & (IN_ACCESS | IN_CHANGE | IN_MODIFIED | 1478 IN_UPDATE)) != 0); 1479 } 1480 1481 static int 1482 ffs_sync_lazy_filter(struct vnode *vp, void *arg __unused) 1483 { 1484 struct inode *ip; 1485 1486 /* 1487 * Flags are safe to access because ->v_data invalidation 1488 * is held off by listmtx. 1489 */ 1490 if (vp->v_type == VNON) 1491 return (false); 1492 ip = VTOI(vp); 1493 if (!sync_doupdate(ip) && (vp->v_iflag & VI_OWEINACT) == 0) 1494 return (false); 1495 return (true); 1496 } 1497 1498 /* 1499 * For a lazy sync, we only care about access times, quotas and the 1500 * superblock. Other filesystem changes are already converted to 1501 * cylinder group blocks or inode blocks updates and are written to 1502 * disk by syncer. 1503 */ 1504 static int 1505 ffs_sync_lazy(mp) 1506 struct mount *mp; 1507 { 1508 struct vnode *mvp, *vp; 1509 struct inode *ip; 1510 struct thread *td; 1511 int allerror, error; 1512 1513 allerror = 0; 1514 td = curthread; 1515 if ((mp->mnt_flag & MNT_NOATIME) != 0) { 1516 #ifdef QUOTA 1517 qsync(mp); 1518 #endif 1519 goto sbupdate; 1520 } 1521 MNT_VNODE_FOREACH_LAZY(vp, mp, mvp, ffs_sync_lazy_filter, NULL) { 1522 if (vp->v_type == VNON) { 1523 VI_UNLOCK(vp); 1524 continue; 1525 } 1526 ip = VTOI(vp); 1527 1528 /* 1529 * The IN_ACCESS flag is converted to IN_MODIFIED by 1530 * ufs_close() and ufs_getattr() by the calls to 1531 * ufs_itimes_locked(), without subsequent UFS_UPDATE(). 1532 * Test also all the other timestamp flags too, to pick up 1533 * any other cases that could be missed. 1534 */ 1535 if (!sync_doupdate(ip) && (vp->v_iflag & VI_OWEINACT) == 0) { 1536 VI_UNLOCK(vp); 1537 continue; 1538 } 1539 if ((error = vget(vp, LK_EXCLUSIVE | LK_NOWAIT | LK_INTERLOCK, 1540 td)) != 0) 1541 continue; 1542 #ifdef QUOTA 1543 qsyncvp(vp); 1544 #endif 1545 if (sync_doupdate(ip)) 1546 error = ffs_update(vp, 0); 1547 if (error != 0) 1548 allerror = error; 1549 vput(vp); 1550 } 1551 sbupdate: 1552 if (VFSTOUFS(mp)->um_fs->fs_fmod != 0 && 1553 (error = ffs_sbupdate(VFSTOUFS(mp), MNT_LAZY, 0)) != 0) 1554 allerror = error; 1555 return (allerror); 1556 } 1557 1558 /* 1559 * Go through the disk queues to initiate sandbagged IO; 1560 * go through the inodes to write those that have been modified; 1561 * initiate the writing of the super block if it has been modified. 1562 * 1563 * Note: we are always called with the filesystem marked busy using 1564 * vfs_busy(). 1565 */ 1566 static int 1567 ffs_sync(mp, waitfor) 1568 struct mount *mp; 1569 int waitfor; 1570 { 1571 struct vnode *mvp, *vp, *devvp; 1572 struct thread *td; 1573 struct inode *ip; 1574 struct ufsmount *ump = VFSTOUFS(mp); 1575 struct fs *fs; 1576 int error, count, lockreq, allerror = 0; 1577 int suspend; 1578 int suspended; 1579 int secondary_writes; 1580 int secondary_accwrites; 1581 int softdep_deps; 1582 int softdep_accdeps; 1583 struct bufobj *bo; 1584 1585 suspend = 0; 1586 suspended = 0; 1587 td = curthread; 1588 fs = ump->um_fs; 1589 if (fs->fs_fmod != 0 && fs->fs_ronly != 0 && ump->um_fsckpid == 0) 1590 panic("%s: ffs_sync: modification on read-only filesystem", 1591 fs->fs_fsmnt); 1592 if (waitfor == MNT_LAZY) { 1593 if (!rebooting) 1594 return (ffs_sync_lazy(mp)); 1595 waitfor = MNT_NOWAIT; 1596 } 1597 1598 /* 1599 * Write back each (modified) inode. 1600 */ 1601 lockreq = LK_EXCLUSIVE | LK_NOWAIT; 1602 if (waitfor == MNT_SUSPEND) { 1603 suspend = 1; 1604 waitfor = MNT_WAIT; 1605 } 1606 if (waitfor == MNT_WAIT) 1607 lockreq = LK_EXCLUSIVE; 1608 lockreq |= LK_INTERLOCK | LK_SLEEPFAIL; 1609 loop: 1610 /* Grab snapshot of secondary write counts */ 1611 MNT_ILOCK(mp); 1612 secondary_writes = mp->mnt_secondary_writes; 1613 secondary_accwrites = mp->mnt_secondary_accwrites; 1614 MNT_IUNLOCK(mp); 1615 1616 /* Grab snapshot of softdep dependency counts */ 1617 softdep_get_depcounts(mp, &softdep_deps, &softdep_accdeps); 1618 1619 MNT_VNODE_FOREACH_ALL(vp, mp, mvp) { 1620 /* 1621 * Depend on the vnode interlock to keep things stable enough 1622 * for a quick test. Since there might be hundreds of 1623 * thousands of vnodes, we cannot afford even a subroutine 1624 * call unless there's a good chance that we have work to do. 1625 */ 1626 if (vp->v_type == VNON) { 1627 VI_UNLOCK(vp); 1628 continue; 1629 } 1630 ip = VTOI(vp); 1631 if ((ip->i_flag & 1632 (IN_ACCESS | IN_CHANGE | IN_MODIFIED | IN_UPDATE)) == 0 && 1633 vp->v_bufobj.bo_dirty.bv_cnt == 0) { 1634 VI_UNLOCK(vp); 1635 continue; 1636 } 1637 if ((error = vget(vp, lockreq, td)) != 0) { 1638 if (error == ENOENT || error == ENOLCK) { 1639 MNT_VNODE_FOREACH_ALL_ABORT(mp, mvp); 1640 goto loop; 1641 } 1642 continue; 1643 } 1644 #ifdef QUOTA 1645 qsyncvp(vp); 1646 #endif 1647 if ((error = ffs_syncvnode(vp, waitfor, 0)) != 0) 1648 allerror = error; 1649 vput(vp); 1650 } 1651 /* 1652 * Force stale filesystem control information to be flushed. 1653 */ 1654 if (waitfor == MNT_WAIT || rebooting) { 1655 if ((error = softdep_flushworklist(ump->um_mountp, &count, td))) 1656 allerror = error; 1657 if (ffs_fsfail_cleanup(ump, allerror)) 1658 allerror = 0; 1659 /* Flushed work items may create new vnodes to clean */ 1660 if (allerror == 0 && count) 1661 goto loop; 1662 } 1663 1664 devvp = ump->um_devvp; 1665 bo = &devvp->v_bufobj; 1666 BO_LOCK(bo); 1667 if (bo->bo_numoutput > 0 || bo->bo_dirty.bv_cnt > 0) { 1668 BO_UNLOCK(bo); 1669 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 1670 error = VOP_FSYNC(devvp, waitfor, td); 1671 VOP_UNLOCK(devvp); 1672 if (MOUNTEDSOFTDEP(mp) && (error == 0 || error == EAGAIN)) 1673 error = ffs_sbupdate(ump, waitfor, 0); 1674 if (error != 0) 1675 allerror = error; 1676 if (ffs_fsfail_cleanup(ump, allerror)) 1677 allerror = 0; 1678 if (allerror == 0 && waitfor == MNT_WAIT) 1679 goto loop; 1680 } else if (suspend != 0) { 1681 if (softdep_check_suspend(mp, 1682 devvp, 1683 softdep_deps, 1684 softdep_accdeps, 1685 secondary_writes, 1686 secondary_accwrites) != 0) { 1687 MNT_IUNLOCK(mp); 1688 goto loop; /* More work needed */ 1689 } 1690 mtx_assert(MNT_MTX(mp), MA_OWNED); 1691 mp->mnt_kern_flag |= MNTK_SUSPEND2 | MNTK_SUSPENDED; 1692 MNT_IUNLOCK(mp); 1693 suspended = 1; 1694 } else 1695 BO_UNLOCK(bo); 1696 /* 1697 * Write back modified superblock. 1698 */ 1699 if (fs->fs_fmod != 0 && 1700 (error = ffs_sbupdate(ump, waitfor, suspended)) != 0) 1701 allerror = error; 1702 if (ffs_fsfail_cleanup(ump, allerror)) 1703 allerror = 0; 1704 return (allerror); 1705 } 1706 1707 int 1708 ffs_vget(mp, ino, flags, vpp) 1709 struct mount *mp; 1710 ino_t ino; 1711 int flags; 1712 struct vnode **vpp; 1713 { 1714 return (ffs_vgetf(mp, ino, flags, vpp, 0)); 1715 } 1716 1717 int 1718 ffs_vgetf(mp, ino, flags, vpp, ffs_flags) 1719 struct mount *mp; 1720 ino_t ino; 1721 int flags; 1722 struct vnode **vpp; 1723 int ffs_flags; 1724 { 1725 struct fs *fs; 1726 struct inode *ip; 1727 struct ufsmount *ump; 1728 struct buf *bp; 1729 struct vnode *vp; 1730 daddr_t dbn; 1731 int error; 1732 1733 MPASS((ffs_flags & FFSV_REPLACE) == 0 || (flags & LK_EXCLUSIVE) != 0); 1734 1735 error = vfs_hash_get(mp, ino, flags, curthread, vpp, NULL, NULL); 1736 if (error != 0) 1737 return (error); 1738 if (*vpp != NULL) { 1739 if ((ffs_flags & FFSV_REPLACE) == 0) 1740 return (0); 1741 vgone(*vpp); 1742 vput(*vpp); 1743 } 1744 1745 /* 1746 * We must promote to an exclusive lock for vnode creation. This 1747 * can happen if lookup is passed LOCKSHARED. 1748 */ 1749 if ((flags & LK_TYPE_MASK) == LK_SHARED) { 1750 flags &= ~LK_TYPE_MASK; 1751 flags |= LK_EXCLUSIVE; 1752 } 1753 1754 /* 1755 * We do not lock vnode creation as it is believed to be too 1756 * expensive for such rare case as simultaneous creation of vnode 1757 * for same ino by different processes. We just allow them to race 1758 * and check later to decide who wins. Let the race begin! 1759 */ 1760 1761 ump = VFSTOUFS(mp); 1762 fs = ump->um_fs; 1763 ip = uma_zalloc(uma_inode, M_WAITOK | M_ZERO); 1764 1765 /* Allocate a new vnode/inode. */ 1766 error = getnewvnode("ufs", mp, fs->fs_magic == FS_UFS1_MAGIC ? 1767 &ffs_vnodeops1 : &ffs_vnodeops2, &vp); 1768 if (error) { 1769 *vpp = NULL; 1770 uma_zfree(uma_inode, ip); 1771 return (error); 1772 } 1773 /* 1774 * FFS supports recursive locking. 1775 */ 1776 lockmgr(vp->v_vnlock, LK_EXCLUSIVE, NULL); 1777 VN_LOCK_AREC(vp); 1778 vp->v_data = ip; 1779 vp->v_bufobj.bo_bsize = fs->fs_bsize; 1780 ip->i_vnode = vp; 1781 ip->i_ump = ump; 1782 ip->i_number = ino; 1783 ip->i_ea_refs = 0; 1784 ip->i_nextclustercg = -1; 1785 ip->i_flag = fs->fs_magic == FS_UFS1_MAGIC ? 0 : IN_UFS2; 1786 ip->i_mode = 0; /* ensure error cases below throw away vnode */ 1787 #ifdef QUOTA 1788 { 1789 int i; 1790 for (i = 0; i < MAXQUOTAS; i++) 1791 ip->i_dquot[i] = NODQUOT; 1792 } 1793 #endif 1794 1795 if (ffs_flags & FFSV_FORCEINSMQ) 1796 vp->v_vflag |= VV_FORCEINSMQ; 1797 error = insmntque(vp, mp); 1798 if (error != 0) { 1799 uma_zfree(uma_inode, ip); 1800 *vpp = NULL; 1801 return (error); 1802 } 1803 vp->v_vflag &= ~VV_FORCEINSMQ; 1804 error = vfs_hash_insert(vp, ino, flags, curthread, vpp, NULL, NULL); 1805 if (error != 0) 1806 return (error); 1807 if (*vpp != NULL) { 1808 /* 1809 * Calls from ffs_valloc() (i.e. FFSV_REPLACE set) 1810 * operate on empty inode, which must not be found by 1811 * other threads until fully filled. Vnode for empty 1812 * inode must be not re-inserted on the hash by other 1813 * thread, after removal by us at the beginning. 1814 */ 1815 MPASS((ffs_flags & FFSV_REPLACE) == 0); 1816 return (0); 1817 } 1818 1819 /* Read in the disk contents for the inode, copy into the inode. */ 1820 dbn = fsbtodb(fs, ino_to_fsba(fs, ino)); 1821 error = ffs_breadz(ump, ump->um_devvp, dbn, dbn, (int)fs->fs_bsize, 1822 NULL, NULL, 0, NOCRED, 0, NULL, &bp); 1823 if (error != 0) { 1824 /* 1825 * The inode does not contain anything useful, so it would 1826 * be misleading to leave it on its hash chain. With mode 1827 * still zero, it will be unlinked and returned to the free 1828 * list by vput(). 1829 */ 1830 vgone(vp); 1831 vput(vp); 1832 *vpp = NULL; 1833 return (error); 1834 } 1835 if (I_IS_UFS1(ip)) 1836 ip->i_din1 = uma_zalloc(uma_ufs1, M_WAITOK); 1837 else 1838 ip->i_din2 = uma_zalloc(uma_ufs2, M_WAITOK); 1839 if ((error = ffs_load_inode(bp, ip, fs, ino)) != 0) { 1840 bqrelse(bp); 1841 vgone(vp); 1842 vput(vp); 1843 *vpp = NULL; 1844 return (error); 1845 } 1846 if (DOINGSOFTDEP(vp)) 1847 softdep_load_inodeblock(ip); 1848 else 1849 ip->i_effnlink = ip->i_nlink; 1850 bqrelse(bp); 1851 1852 /* 1853 * Initialize the vnode from the inode, check for aliases. 1854 * Note that the underlying vnode may have changed. 1855 */ 1856 error = ufs_vinit(mp, I_IS_UFS1(ip) ? &ffs_fifoops1 : &ffs_fifoops2, 1857 &vp); 1858 if (error) { 1859 vgone(vp); 1860 vput(vp); 1861 *vpp = NULL; 1862 return (error); 1863 } 1864 1865 /* 1866 * Finish inode initialization. 1867 */ 1868 if (vp->v_type != VFIFO) { 1869 /* FFS supports shared locking for all files except fifos. */ 1870 VN_LOCK_ASHARE(vp); 1871 } 1872 1873 /* 1874 * Set up a generation number for this inode if it does not 1875 * already have one. This should only happen on old filesystems. 1876 */ 1877 if (ip->i_gen == 0) { 1878 while (ip->i_gen == 0) 1879 ip->i_gen = arc4random(); 1880 if ((vp->v_mount->mnt_flag & MNT_RDONLY) == 0) { 1881 UFS_INODE_SET_FLAG(ip, IN_MODIFIED); 1882 DIP_SET(ip, i_gen, ip->i_gen); 1883 } 1884 } 1885 #ifdef MAC 1886 if ((mp->mnt_flag & MNT_MULTILABEL) && ip->i_mode) { 1887 /* 1888 * If this vnode is already allocated, and we're running 1889 * multi-label, attempt to perform a label association 1890 * from the extended attributes on the inode. 1891 */ 1892 error = mac_vnode_associate_extattr(mp, vp); 1893 if (error) { 1894 /* ufs_inactive will release ip->i_devvp ref. */ 1895 vgone(vp); 1896 vput(vp); 1897 *vpp = NULL; 1898 return (error); 1899 } 1900 } 1901 #endif 1902 1903 *vpp = vp; 1904 return (0); 1905 } 1906 1907 /* 1908 * File handle to vnode 1909 * 1910 * Have to be really careful about stale file handles: 1911 * - check that the inode number is valid 1912 * - for UFS2 check that the inode number is initialized 1913 * - call ffs_vget() to get the locked inode 1914 * - check for an unallocated inode (i_mode == 0) 1915 * - check that the given client host has export rights and return 1916 * those rights via. exflagsp and credanonp 1917 */ 1918 static int 1919 ffs_fhtovp(mp, fhp, flags, vpp) 1920 struct mount *mp; 1921 struct fid *fhp; 1922 int flags; 1923 struct vnode **vpp; 1924 { 1925 struct ufid *ufhp; 1926 struct ufsmount *ump; 1927 struct fs *fs; 1928 struct cg *cgp; 1929 struct buf *bp; 1930 ino_t ino; 1931 u_int cg; 1932 int error; 1933 1934 ufhp = (struct ufid *)fhp; 1935 ino = ufhp->ufid_ino; 1936 ump = VFSTOUFS(mp); 1937 fs = ump->um_fs; 1938 if (ino < UFS_ROOTINO || ino >= fs->fs_ncg * fs->fs_ipg) 1939 return (ESTALE); 1940 /* 1941 * Need to check if inode is initialized because UFS2 does lazy 1942 * initialization and nfs_fhtovp can offer arbitrary inode numbers. 1943 */ 1944 if (fs->fs_magic != FS_UFS2_MAGIC) 1945 return (ufs_fhtovp(mp, ufhp, flags, vpp)); 1946 cg = ino_to_cg(fs, ino); 1947 if ((error = ffs_getcg(fs, ump->um_devvp, cg, 0, &bp, &cgp)) != 0) 1948 return (error); 1949 if (ino >= cg * fs->fs_ipg + cgp->cg_initediblk) { 1950 brelse(bp); 1951 return (ESTALE); 1952 } 1953 brelse(bp); 1954 return (ufs_fhtovp(mp, ufhp, flags, vpp)); 1955 } 1956 1957 /* 1958 * Initialize the filesystem. 1959 */ 1960 static int 1961 ffs_init(vfsp) 1962 struct vfsconf *vfsp; 1963 { 1964 1965 ffs_susp_initialize(); 1966 softdep_initialize(); 1967 return (ufs_init(vfsp)); 1968 } 1969 1970 /* 1971 * Undo the work of ffs_init(). 1972 */ 1973 static int 1974 ffs_uninit(vfsp) 1975 struct vfsconf *vfsp; 1976 { 1977 int ret; 1978 1979 ret = ufs_uninit(vfsp); 1980 softdep_uninitialize(); 1981 ffs_susp_uninitialize(); 1982 taskqueue_drain_all(taskqueue_thread); 1983 return (ret); 1984 } 1985 1986 /* 1987 * Structure used to pass information from ffs_sbupdate to its 1988 * helper routine ffs_use_bwrite. 1989 */ 1990 struct devfd { 1991 struct ufsmount *ump; 1992 struct buf *sbbp; 1993 int waitfor; 1994 int suspended; 1995 int error; 1996 }; 1997 1998 /* 1999 * Write a superblock and associated information back to disk. 2000 */ 2001 int 2002 ffs_sbupdate(ump, waitfor, suspended) 2003 struct ufsmount *ump; 2004 int waitfor; 2005 int suspended; 2006 { 2007 struct fs *fs; 2008 struct buf *sbbp; 2009 struct devfd devfd; 2010 2011 fs = ump->um_fs; 2012 if (fs->fs_ronly == 1 && 2013 (ump->um_mountp->mnt_flag & (MNT_RDONLY | MNT_UPDATE)) != 2014 (MNT_RDONLY | MNT_UPDATE) && ump->um_fsckpid == 0) 2015 panic("ffs_sbupdate: write read-only filesystem"); 2016 /* 2017 * We use the superblock's buf to serialize calls to ffs_sbupdate(). 2018 */ 2019 sbbp = getblk(ump->um_devvp, btodb(fs->fs_sblockloc), 2020 (int)fs->fs_sbsize, 0, 0, 0); 2021 /* 2022 * Initialize info needed for write function. 2023 */ 2024 devfd.ump = ump; 2025 devfd.sbbp = sbbp; 2026 devfd.waitfor = waitfor; 2027 devfd.suspended = suspended; 2028 devfd.error = 0; 2029 return (ffs_sbput(&devfd, fs, fs->fs_sblockloc, ffs_use_bwrite)); 2030 } 2031 2032 /* 2033 * Write function for use by filesystem-layer routines. 2034 */ 2035 static int 2036 ffs_use_bwrite(void *devfd, off_t loc, void *buf, int size) 2037 { 2038 struct devfd *devfdp; 2039 struct ufsmount *ump; 2040 struct buf *bp; 2041 struct fs *fs; 2042 int error; 2043 2044 devfdp = devfd; 2045 ump = devfdp->ump; 2046 fs = ump->um_fs; 2047 /* 2048 * Writing the superblock summary information. 2049 */ 2050 if (loc != fs->fs_sblockloc) { 2051 bp = getblk(ump->um_devvp, btodb(loc), size, 0, 0, 0); 2052 bcopy(buf, bp->b_data, (u_int)size); 2053 if (devfdp->suspended) 2054 bp->b_flags |= B_VALIDSUSPWRT; 2055 if (devfdp->waitfor != MNT_WAIT) 2056 bawrite(bp); 2057 else if ((error = bwrite(bp)) != 0) 2058 devfdp->error = error; 2059 return (0); 2060 } 2061 /* 2062 * Writing the superblock itself. We need to do special checks for it. 2063 */ 2064 bp = devfdp->sbbp; 2065 if (ffs_fsfail_cleanup(ump, devfdp->error)) 2066 devfdp->error = 0; 2067 if (devfdp->error != 0) { 2068 brelse(bp); 2069 return (devfdp->error); 2070 } 2071 if (fs->fs_magic == FS_UFS1_MAGIC && fs->fs_sblockloc != SBLOCK_UFS1 && 2072 (fs->fs_old_flags & FS_FLAGS_UPDATED) == 0) { 2073 printf("WARNING: %s: correcting fs_sblockloc from %jd to %d\n", 2074 fs->fs_fsmnt, fs->fs_sblockloc, SBLOCK_UFS1); 2075 fs->fs_sblockloc = SBLOCK_UFS1; 2076 } 2077 if (fs->fs_magic == FS_UFS2_MAGIC && fs->fs_sblockloc != SBLOCK_UFS2 && 2078 (fs->fs_old_flags & FS_FLAGS_UPDATED) == 0) { 2079 printf("WARNING: %s: correcting fs_sblockloc from %jd to %d\n", 2080 fs->fs_fsmnt, fs->fs_sblockloc, SBLOCK_UFS2); 2081 fs->fs_sblockloc = SBLOCK_UFS2; 2082 } 2083 if (MOUNTEDSOFTDEP(ump->um_mountp)) 2084 softdep_setup_sbupdate(ump, (struct fs *)bp->b_data, bp); 2085 bcopy((caddr_t)fs, bp->b_data, (u_int)fs->fs_sbsize); 2086 fs = (struct fs *)bp->b_data; 2087 ffs_oldfscompat_write(fs, ump); 2088 /* 2089 * Because we may have made changes to the superblock, we need to 2090 * recompute its check-hash. 2091 */ 2092 fs->fs_ckhash = ffs_calc_sbhash(fs); 2093 if (devfdp->suspended) 2094 bp->b_flags |= B_VALIDSUSPWRT; 2095 if (devfdp->waitfor != MNT_WAIT) 2096 bawrite(bp); 2097 else if ((error = bwrite(bp)) != 0) 2098 devfdp->error = error; 2099 return (devfdp->error); 2100 } 2101 2102 static int 2103 ffs_extattrctl(struct mount *mp, int cmd, struct vnode *filename_vp, 2104 int attrnamespace, const char *attrname) 2105 { 2106 2107 #ifdef UFS_EXTATTR 2108 return (ufs_extattrctl(mp, cmd, filename_vp, attrnamespace, 2109 attrname)); 2110 #else 2111 return (vfs_stdextattrctl(mp, cmd, filename_vp, attrnamespace, 2112 attrname)); 2113 #endif 2114 } 2115 2116 static void 2117 ffs_ifree(struct ufsmount *ump, struct inode *ip) 2118 { 2119 2120 if (ump->um_fstype == UFS1 && ip->i_din1 != NULL) 2121 uma_zfree(uma_ufs1, ip->i_din1); 2122 else if (ip->i_din2 != NULL) 2123 uma_zfree(uma_ufs2, ip->i_din2); 2124 uma_zfree(uma_inode, ip); 2125 } 2126 2127 static int dobkgrdwrite = 1; 2128 SYSCTL_INT(_debug, OID_AUTO, dobkgrdwrite, CTLFLAG_RW, &dobkgrdwrite, 0, 2129 "Do background writes (honoring the BV_BKGRDWRITE flag)?"); 2130 2131 /* 2132 * Complete a background write started from bwrite. 2133 */ 2134 static void 2135 ffs_backgroundwritedone(struct buf *bp) 2136 { 2137 struct bufobj *bufobj; 2138 struct buf *origbp; 2139 2140 #ifdef SOFTUPDATES 2141 if (!LIST_EMPTY(&bp->b_dep) && (bp->b_ioflags & BIO_ERROR) != 0) 2142 softdep_handle_error(bp); 2143 #endif 2144 2145 /* 2146 * Find the original buffer that we are writing. 2147 */ 2148 bufobj = bp->b_bufobj; 2149 BO_LOCK(bufobj); 2150 if ((origbp = gbincore(bp->b_bufobj, bp->b_lblkno)) == NULL) 2151 panic("backgroundwritedone: lost buffer"); 2152 2153 /* 2154 * We should mark the cylinder group buffer origbp as 2155 * dirty, to not lose the failed write. 2156 */ 2157 if ((bp->b_ioflags & BIO_ERROR) != 0) 2158 origbp->b_vflags |= BV_BKGRDERR; 2159 BO_UNLOCK(bufobj); 2160 /* 2161 * Process dependencies then return any unfinished ones. 2162 */ 2163 if (!LIST_EMPTY(&bp->b_dep) && (bp->b_ioflags & BIO_ERROR) == 0) 2164 buf_complete(bp); 2165 #ifdef SOFTUPDATES 2166 if (!LIST_EMPTY(&bp->b_dep)) 2167 softdep_move_dependencies(bp, origbp); 2168 #endif 2169 /* 2170 * This buffer is marked B_NOCACHE so when it is released 2171 * by biodone it will be tossed. 2172 */ 2173 bp->b_flags |= B_NOCACHE; 2174 bp->b_flags &= ~B_CACHE; 2175 pbrelvp(bp); 2176 2177 /* 2178 * Prevent brelse() from trying to keep and re-dirtying bp on 2179 * errors. It causes b_bufobj dereference in 2180 * bdirty()/reassignbuf(), and b_bufobj was cleared in 2181 * pbrelvp() above. 2182 */ 2183 if ((bp->b_ioflags & BIO_ERROR) != 0) 2184 bp->b_flags |= B_INVAL; 2185 bufdone(bp); 2186 BO_LOCK(bufobj); 2187 /* 2188 * Clear the BV_BKGRDINPROG flag in the original buffer 2189 * and awaken it if it is waiting for the write to complete. 2190 * If BV_BKGRDINPROG is not set in the original buffer it must 2191 * have been released and re-instantiated - which is not legal. 2192 */ 2193 KASSERT((origbp->b_vflags & BV_BKGRDINPROG), 2194 ("backgroundwritedone: lost buffer2")); 2195 origbp->b_vflags &= ~BV_BKGRDINPROG; 2196 if (origbp->b_vflags & BV_BKGRDWAIT) { 2197 origbp->b_vflags &= ~BV_BKGRDWAIT; 2198 wakeup(&origbp->b_xflags); 2199 } 2200 BO_UNLOCK(bufobj); 2201 } 2202 2203 2204 /* 2205 * Write, release buffer on completion. (Done by iodone 2206 * if async). Do not bother writing anything if the buffer 2207 * is invalid. 2208 * 2209 * Note that we set B_CACHE here, indicating that buffer is 2210 * fully valid and thus cacheable. This is true even of NFS 2211 * now so we set it generally. This could be set either here 2212 * or in biodone() since the I/O is synchronous. We put it 2213 * here. 2214 */ 2215 static int 2216 ffs_bufwrite(struct buf *bp) 2217 { 2218 struct buf *newbp; 2219 struct cg *cgp; 2220 2221 CTR3(KTR_BUF, "bufwrite(%p) vp %p flags %X", bp, bp->b_vp, bp->b_flags); 2222 if (bp->b_flags & B_INVAL) { 2223 brelse(bp); 2224 return (0); 2225 } 2226 2227 if (!BUF_ISLOCKED(bp)) 2228 panic("bufwrite: buffer is not busy???"); 2229 /* 2230 * If a background write is already in progress, delay 2231 * writing this block if it is asynchronous. Otherwise 2232 * wait for the background write to complete. 2233 */ 2234 BO_LOCK(bp->b_bufobj); 2235 if (bp->b_vflags & BV_BKGRDINPROG) { 2236 if (bp->b_flags & B_ASYNC) { 2237 BO_UNLOCK(bp->b_bufobj); 2238 bdwrite(bp); 2239 return (0); 2240 } 2241 bp->b_vflags |= BV_BKGRDWAIT; 2242 msleep(&bp->b_xflags, BO_LOCKPTR(bp->b_bufobj), PRIBIO, 2243 "bwrbg", 0); 2244 if (bp->b_vflags & BV_BKGRDINPROG) 2245 panic("bufwrite: still writing"); 2246 } 2247 bp->b_vflags &= ~BV_BKGRDERR; 2248 BO_UNLOCK(bp->b_bufobj); 2249 2250 /* 2251 * If this buffer is marked for background writing and we 2252 * do not have to wait for it, make a copy and write the 2253 * copy so as to leave this buffer ready for further use. 2254 * 2255 * This optimization eats a lot of memory. If we have a page 2256 * or buffer shortfall we can't do it. 2257 */ 2258 if (dobkgrdwrite && (bp->b_xflags & BX_BKGRDWRITE) && 2259 (bp->b_flags & B_ASYNC) && 2260 !vm_page_count_severe() && 2261 !buf_dirty_count_severe()) { 2262 KASSERT(bp->b_iodone == NULL, 2263 ("bufwrite: needs chained iodone (%p)", bp->b_iodone)); 2264 2265 /* get a new block */ 2266 newbp = geteblk(bp->b_bufsize, GB_NOWAIT_BD); 2267 if (newbp == NULL) 2268 goto normal_write; 2269 2270 KASSERT(buf_mapped(bp), ("Unmapped cg")); 2271 memcpy(newbp->b_data, bp->b_data, bp->b_bufsize); 2272 BO_LOCK(bp->b_bufobj); 2273 bp->b_vflags |= BV_BKGRDINPROG; 2274 BO_UNLOCK(bp->b_bufobj); 2275 newbp->b_xflags |= 2276 (bp->b_xflags & BX_FSPRIV) | BX_BKGRDMARKER; 2277 newbp->b_lblkno = bp->b_lblkno; 2278 newbp->b_blkno = bp->b_blkno; 2279 newbp->b_offset = bp->b_offset; 2280 newbp->b_iodone = ffs_backgroundwritedone; 2281 newbp->b_flags |= B_ASYNC; 2282 newbp->b_flags &= ~B_INVAL; 2283 pbgetvp(bp->b_vp, newbp); 2284 2285 #ifdef SOFTUPDATES 2286 /* 2287 * Move over the dependencies. If there are rollbacks, 2288 * leave the parent buffer dirtied as it will need to 2289 * be written again. 2290 */ 2291 if (LIST_EMPTY(&bp->b_dep) || 2292 softdep_move_dependencies(bp, newbp) == 0) 2293 bundirty(bp); 2294 #else 2295 bundirty(bp); 2296 #endif 2297 2298 /* 2299 * Initiate write on the copy, release the original. The 2300 * BKGRDINPROG flag prevents it from going away until 2301 * the background write completes. We have to recalculate 2302 * its check hash in case the buffer gets freed and then 2303 * reconstituted from the buffer cache during a later read. 2304 */ 2305 if ((bp->b_xflags & BX_CYLGRP) != 0) { 2306 cgp = (struct cg *)bp->b_data; 2307 cgp->cg_ckhash = 0; 2308 cgp->cg_ckhash = 2309 calculate_crc32c(~0L, bp->b_data, bp->b_bcount); 2310 } 2311 bqrelse(bp); 2312 bp = newbp; 2313 } else 2314 /* Mark the buffer clean */ 2315 bundirty(bp); 2316 2317 2318 /* Let the normal bufwrite do the rest for us */ 2319 normal_write: 2320 /* 2321 * If we are writing a cylinder group, update its time. 2322 */ 2323 if ((bp->b_xflags & BX_CYLGRP) != 0) { 2324 cgp = (struct cg *)bp->b_data; 2325 cgp->cg_old_time = cgp->cg_time = time_second; 2326 } 2327 return (bufwrite(bp)); 2328 } 2329 2330 2331 static void 2332 ffs_geom_strategy(struct bufobj *bo, struct buf *bp) 2333 { 2334 struct vnode *vp; 2335 struct buf *tbp; 2336 int error, nocopy; 2337 2338 /* 2339 * This is the bufobj strategy for the private VCHR vnodes 2340 * used by FFS to access the underlying storage device. 2341 * We override the default bufobj strategy and thus bypass 2342 * VOP_STRATEGY() for these vnodes. 2343 */ 2344 vp = bo2vnode(bo); 2345 KASSERT(bp->b_vp == NULL || bp->b_vp->v_type != VCHR || 2346 bp->b_vp->v_rdev == NULL || 2347 bp->b_vp->v_rdev->si_mountpt == NULL || 2348 VFSTOUFS(bp->b_vp->v_rdev->si_mountpt) == NULL || 2349 vp == VFSTOUFS(bp->b_vp->v_rdev->si_mountpt)->um_devvp, 2350 ("ffs_geom_strategy() with wrong vp")); 2351 if (bp->b_iocmd == BIO_WRITE) { 2352 if ((bp->b_flags & B_VALIDSUSPWRT) == 0 && 2353 bp->b_vp != NULL && bp->b_vp->v_mount != NULL && 2354 (bp->b_vp->v_mount->mnt_kern_flag & MNTK_SUSPENDED) != 0) 2355 panic("ffs_geom_strategy: bad I/O"); 2356 nocopy = bp->b_flags & B_NOCOPY; 2357 bp->b_flags &= ~(B_VALIDSUSPWRT | B_NOCOPY); 2358 if ((vp->v_vflag & VV_COPYONWRITE) && nocopy == 0 && 2359 vp->v_rdev->si_snapdata != NULL) { 2360 if ((bp->b_flags & B_CLUSTER) != 0) { 2361 runningbufwakeup(bp); 2362 TAILQ_FOREACH(tbp, &bp->b_cluster.cluster_head, 2363 b_cluster.cluster_entry) { 2364 error = ffs_copyonwrite(vp, tbp); 2365 if (error != 0 && 2366 error != EOPNOTSUPP) { 2367 bp->b_error = error; 2368 bp->b_ioflags |= BIO_ERROR; 2369 bufdone(bp); 2370 return; 2371 } 2372 } 2373 bp->b_runningbufspace = bp->b_bufsize; 2374 atomic_add_long(&runningbufspace, 2375 bp->b_runningbufspace); 2376 } else { 2377 error = ffs_copyonwrite(vp, bp); 2378 if (error != 0 && error != EOPNOTSUPP) { 2379 bp->b_error = error; 2380 bp->b_ioflags |= BIO_ERROR; 2381 bufdone(bp); 2382 return; 2383 } 2384 } 2385 } 2386 #ifdef SOFTUPDATES 2387 if ((bp->b_flags & B_CLUSTER) != 0) { 2388 TAILQ_FOREACH(tbp, &bp->b_cluster.cluster_head, 2389 b_cluster.cluster_entry) { 2390 if (!LIST_EMPTY(&tbp->b_dep)) 2391 buf_start(tbp); 2392 } 2393 } else { 2394 if (!LIST_EMPTY(&bp->b_dep)) 2395 buf_start(bp); 2396 } 2397 2398 #endif 2399 /* 2400 * Check for metadata that needs check-hashes and update them. 2401 */ 2402 switch (bp->b_xflags & BX_FSPRIV) { 2403 case BX_CYLGRP: 2404 ((struct cg *)bp->b_data)->cg_ckhash = 0; 2405 ((struct cg *)bp->b_data)->cg_ckhash = 2406 calculate_crc32c(~0L, bp->b_data, bp->b_bcount); 2407 break; 2408 2409 case BX_SUPERBLOCK: 2410 case BX_INODE: 2411 case BX_INDIR: 2412 case BX_DIR: 2413 printf("Check-hash write is unimplemented!!!\n"); 2414 break; 2415 2416 case 0: 2417 break; 2418 2419 default: 2420 printf("multiple buffer types 0x%b\n", 2421 (u_int)(bp->b_xflags & BX_FSPRIV), 2422 PRINT_UFS_BUF_XFLAGS); 2423 break; 2424 } 2425 } 2426 if (bp->b_iocmd != BIO_READ && ffs_enxio_enable) 2427 bp->b_xflags |= BX_CVTENXIO; 2428 g_vfs_strategy(bo, bp); 2429 } 2430 2431 int 2432 ffs_own_mount(const struct mount *mp) 2433 { 2434 2435 if (mp->mnt_op == &ufs_vfsops) 2436 return (1); 2437 return (0); 2438 } 2439 2440 #ifdef DDB 2441 #ifdef SOFTUPDATES 2442 2443 /* defined in ffs_softdep.c */ 2444 extern void db_print_ffs(struct ufsmount *ump); 2445 2446 DB_SHOW_COMMAND(ffs, db_show_ffs) 2447 { 2448 struct mount *mp; 2449 struct ufsmount *ump; 2450 2451 if (have_addr) { 2452 ump = VFSTOUFS((struct mount *)addr); 2453 db_print_ffs(ump); 2454 return; 2455 } 2456 2457 TAILQ_FOREACH(mp, &mountlist, mnt_list) { 2458 if (!strcmp(mp->mnt_stat.f_fstypename, ufs_vfsconf.vfc_name)) 2459 db_print_ffs(VFSTOUFS(mp)); 2460 } 2461 } 2462 2463 #endif /* SOFTUPDATES */ 2464 #endif /* DDB */ 2465