| 1 | /* $NetBSD: ffs_vfsops.c,v 1.341 2016/10/20 19:31:32 jdolecek Exp $ */ |
| 2 | |
| 3 | /*- |
| 4 | * Copyright (c) 2008, 2009 The NetBSD Foundation, Inc. |
| 5 | * All rights reserved. |
| 6 | * |
| 7 | * This code is derived from software contributed to The NetBSD Foundation |
| 8 | * by Wasabi Systems, Inc, and by Andrew Doran. |
| 9 | * |
| 10 | * Redistribution and use in source and binary forms, with or without |
| 11 | * modification, are permitted provided that the following conditions |
| 12 | * are met: |
| 13 | * 1. Redistributions of source code must retain the above copyright |
| 14 | * notice, this list of conditions and the following disclaimer. |
| 15 | * 2. Redistributions in binary form must reproduce the above copyright |
| 16 | * notice, this list of conditions and the following disclaimer in the |
| 17 | * documentation and/or other materials provided with the distribution. |
| 18 | * |
| 19 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
| 20 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
| 21 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 22 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
| 23 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 24 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 25 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 26 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 27 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 28 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 29 | * POSSIBILITY OF SUCH DAMAGE. |
| 30 | */ |
| 31 | |
| 32 | /* |
| 33 | * Copyright (c) 1989, 1991, 1993, 1994 |
| 34 | * The Regents of the University of California. All rights reserved. |
| 35 | * |
| 36 | * Redistribution and use in source and binary forms, with or without |
| 37 | * modification, are permitted provided that the following conditions |
| 38 | * are met: |
| 39 | * 1. Redistributions of source code must retain the above copyright |
| 40 | * notice, this list of conditions and the following disclaimer. |
| 41 | * 2. Redistributions in binary form must reproduce the above copyright |
| 42 | * notice, this list of conditions and the following disclaimer in the |
| 43 | * documentation and/or other materials provided with the distribution. |
| 44 | * 3. Neither the name of the University nor the names of its contributors |
| 45 | * may be used to endorse or promote products derived from this software |
| 46 | * without specific prior written permission. |
| 47 | * |
| 48 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 49 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 50 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 51 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 52 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 53 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 54 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 55 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 56 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 57 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 58 | * SUCH DAMAGE. |
| 59 | * |
| 60 | * @(#)ffs_vfsops.c 8.31 (Berkeley) 5/20/95 |
| 61 | */ |
| 62 | |
| 63 | #include <sys/cdefs.h> |
| 64 | __KERNEL_RCSID(0, "$NetBSD: ffs_vfsops.c,v 1.341 2016/10/20 19:31:32 jdolecek Exp $" ); |
| 65 | |
| 66 | #if defined(_KERNEL_OPT) |
| 67 | #include "opt_ffs.h" |
| 68 | #include "opt_quota.h" |
| 69 | #include "opt_wapbl.h" |
| 70 | #endif |
| 71 | |
| 72 | #include <sys/param.h> |
| 73 | #include <sys/systm.h> |
| 74 | #include <sys/namei.h> |
| 75 | #include <sys/proc.h> |
| 76 | #include <sys/kernel.h> |
| 77 | #include <sys/vnode.h> |
| 78 | #include <sys/socket.h> |
| 79 | #include <sys/mount.h> |
| 80 | #include <sys/buf.h> |
| 81 | #include <sys/device.h> |
| 82 | #include <sys/disk.h> |
| 83 | #include <sys/mbuf.h> |
| 84 | #include <sys/file.h> |
| 85 | #include <sys/disklabel.h> |
| 86 | #include <sys/ioctl.h> |
| 87 | #include <sys/errno.h> |
| 88 | #include <sys/kmem.h> |
| 89 | #include <sys/pool.h> |
| 90 | #include <sys/lock.h> |
| 91 | #include <sys/sysctl.h> |
| 92 | #include <sys/conf.h> |
| 93 | #include <sys/kauth.h> |
| 94 | #include <sys/wapbl.h> |
| 95 | #include <sys/fstrans.h> |
| 96 | #include <sys/module.h> |
| 97 | |
| 98 | #include <miscfs/genfs/genfs.h> |
| 99 | #include <miscfs/specfs/specdev.h> |
| 100 | |
| 101 | #include <ufs/ufs/quota.h> |
| 102 | #include <ufs/ufs/ufsmount.h> |
| 103 | #include <ufs/ufs/inode.h> |
| 104 | #include <ufs/ufs/dir.h> |
| 105 | #include <ufs/ufs/ufs_extern.h> |
| 106 | #include <ufs/ufs/ufs_bswap.h> |
| 107 | #include <ufs/ufs/ufs_wapbl.h> |
| 108 | |
| 109 | #include <ufs/ffs/fs.h> |
| 110 | #include <ufs/ffs/ffs_extern.h> |
| 111 | |
| 112 | #ifdef WAPBL |
| 113 | MODULE(MODULE_CLASS_VFS, ffs, "wapbl" ); |
| 114 | #else |
| 115 | MODULE(MODULE_CLASS_VFS, ffs, NULL); |
| 116 | #endif |
| 117 | |
| 118 | static int ffs_vfs_fsync(vnode_t *, int); |
| 119 | static int ffs_superblock_validate(struct fs *); |
| 120 | static int ffs_is_appleufs(struct vnode *, struct fs *); |
| 121 | |
| 122 | static int ffs_init_vnode(struct ufsmount *, struct vnode *, ino_t); |
| 123 | static void ffs_deinit_vnode(struct ufsmount *, struct vnode *); |
| 124 | |
| 125 | static struct sysctllog *ffs_sysctl_log; |
| 126 | |
| 127 | static kauth_listener_t ffs_snapshot_listener; |
| 128 | |
| 129 | /* how many times ffs_init() was called */ |
| 130 | int ffs_initcount = 0; |
| 131 | |
| 132 | #ifdef DEBUG_FFS_MOUNT |
| 133 | #define DPRINTF(_fmt, args...) printf("%s: " _fmt "\n", __func__, ##args) |
| 134 | #else |
| 135 | #define DPRINTF(_fmt, args...) do {} while (/*CONSTCOND*/0) |
| 136 | #endif |
| 137 | |
| 138 | extern const struct vnodeopv_desc ffs_vnodeop_opv_desc; |
| 139 | extern const struct vnodeopv_desc ffs_specop_opv_desc; |
| 140 | extern const struct vnodeopv_desc ffs_fifoop_opv_desc; |
| 141 | |
| 142 | const struct vnodeopv_desc * const ffs_vnodeopv_descs[] = { |
| 143 | &ffs_vnodeop_opv_desc, |
| 144 | &ffs_specop_opv_desc, |
| 145 | &ffs_fifoop_opv_desc, |
| 146 | NULL, |
| 147 | }; |
| 148 | |
| 149 | struct vfsops ffs_vfsops = { |
| 150 | .vfs_name = MOUNT_FFS, |
| 151 | .vfs_min_mount_data = sizeof (struct ufs_args), |
| 152 | .vfs_mount = ffs_mount, |
| 153 | .vfs_start = ufs_start, |
| 154 | .vfs_unmount = ffs_unmount, |
| 155 | .vfs_root = ufs_root, |
| 156 | .vfs_quotactl = ufs_quotactl, |
| 157 | .vfs_statvfs = ffs_statvfs, |
| 158 | .vfs_sync = ffs_sync, |
| 159 | .vfs_vget = ufs_vget, |
| 160 | .vfs_loadvnode = ffs_loadvnode, |
| 161 | .vfs_newvnode = ffs_newvnode, |
| 162 | .vfs_fhtovp = ffs_fhtovp, |
| 163 | .vfs_vptofh = ffs_vptofh, |
| 164 | .vfs_init = ffs_init, |
| 165 | .vfs_reinit = ffs_reinit, |
| 166 | .vfs_done = ffs_done, |
| 167 | .vfs_mountroot = ffs_mountroot, |
| 168 | .vfs_snapshot = ffs_snapshot, |
| 169 | .vfs_extattrctl = ffs_extattrctl, |
| 170 | .vfs_suspendctl = ffs_suspendctl, |
| 171 | .vfs_renamelock_enter = genfs_renamelock_enter, |
| 172 | .vfs_renamelock_exit = genfs_renamelock_exit, |
| 173 | .vfs_fsync = ffs_vfs_fsync, |
| 174 | .vfs_opv_descs = ffs_vnodeopv_descs |
| 175 | }; |
| 176 | |
| 177 | static const struct genfs_ops ffs_genfsops = { |
| 178 | .gop_size = ffs_gop_size, |
| 179 | .gop_alloc = ufs_gop_alloc, |
| 180 | .gop_write = genfs_gop_write, |
| 181 | .gop_markupdate = ufs_gop_markupdate, |
| 182 | }; |
| 183 | |
| 184 | static const struct ufs_ops ffs_ufsops = { |
| 185 | .uo_itimes = ffs_itimes, |
| 186 | .uo_update = ffs_update, |
| 187 | .uo_truncate = ffs_truncate, |
| 188 | .uo_balloc = ffs_balloc, |
| 189 | .uo_snapgone = ffs_snapgone, |
| 190 | .uo_bufrd = ffs_bufrd, |
| 191 | .uo_bufwr = ffs_bufwr, |
| 192 | }; |
| 193 | |
| 194 | static int |
| 195 | ffs_checkrange(struct mount *mp, uint32_t ino) |
| 196 | { |
| 197 | struct fs *fs = VFSTOUFS(mp)->um_fs; |
| 198 | |
| 199 | if (ino < UFS_ROOTINO || ino >= fs->fs_ncg * fs->fs_ipg) { |
| 200 | DPRINTF("out of range %u\n" , ino); |
| 201 | return ESTALE; |
| 202 | } |
| 203 | |
| 204 | /* |
| 205 | * Need to check if inode is initialized because ffsv2 does |
| 206 | * lazy initialization and we can get here from nfs_fhtovp |
| 207 | */ |
| 208 | if (fs->fs_magic != FS_UFS2_MAGIC) |
| 209 | return 0; |
| 210 | |
| 211 | struct buf *bp; |
| 212 | int cg = ino_to_cg(fs, ino); |
| 213 | struct ufsmount *ump = VFSTOUFS(mp); |
| 214 | |
| 215 | int error = bread(ump->um_devvp, FFS_FSBTODB(fs, cgtod(fs, cg)), |
| 216 | (int)fs->fs_cgsize, B_MODIFY, &bp); |
| 217 | if (error) { |
| 218 | DPRINTF("error %d reading cg %d ino %u\n" , error, cg, ino); |
| 219 | return error; |
| 220 | } |
| 221 | |
| 222 | const int needswap = UFS_FSNEEDSWAP(fs); |
| 223 | |
| 224 | struct cg *cgp = (struct cg *)bp->b_data; |
| 225 | if (!cg_chkmagic(cgp, needswap)) { |
| 226 | brelse(bp, 0); |
| 227 | DPRINTF("bad cylinder group magic cg %d ino %u\n" , cg, ino); |
| 228 | return ESTALE; |
| 229 | } |
| 230 | |
| 231 | int32_t initediblk = ufs_rw32(cgp->cg_initediblk, needswap); |
| 232 | brelse(bp, 0); |
| 233 | |
| 234 | if (cg * fs->fs_ipg + initediblk < ino) { |
| 235 | DPRINTF("cg=%d fs->fs_ipg=%d initediblk=%d ino=%u\n" , |
| 236 | cg, fs->fs_ipg, initediblk, ino); |
| 237 | return ESTALE; |
| 238 | } |
| 239 | return 0; |
| 240 | } |
| 241 | |
| 242 | static int |
| 243 | ffs_snapshot_cb(kauth_cred_t cred, kauth_action_t action, void *cookie, |
| 244 | void *arg0, void *arg1, void *arg2, void *arg3) |
| 245 | { |
| 246 | vnode_t *vp = arg2; |
| 247 | int result = KAUTH_RESULT_DEFER; |
| 248 | |
| 249 | if (action != KAUTH_SYSTEM_FS_SNAPSHOT) |
| 250 | return result; |
| 251 | |
| 252 | if (VTOI(vp)->i_uid == kauth_cred_geteuid(cred)) |
| 253 | result = KAUTH_RESULT_ALLOW; |
| 254 | |
| 255 | return result; |
| 256 | } |
| 257 | |
| 258 | static int |
| 259 | ffs_modcmd(modcmd_t cmd, void *arg) |
| 260 | { |
| 261 | int error; |
| 262 | |
| 263 | #if 0 |
| 264 | extern int doasyncfree; |
| 265 | #endif |
| 266 | #ifdef UFS_EXTATTR |
| 267 | extern int ufs_extattr_autocreate; |
| 268 | #endif |
| 269 | extern int ffs_log_changeopt; |
| 270 | |
| 271 | switch (cmd) { |
| 272 | case MODULE_CMD_INIT: |
| 273 | error = vfs_attach(&ffs_vfsops); |
| 274 | if (error != 0) |
| 275 | break; |
| 276 | |
| 277 | sysctl_createv(&ffs_sysctl_log, 0, NULL, NULL, |
| 278 | CTLFLAG_PERMANENT, |
| 279 | CTLTYPE_NODE, "ffs" , |
| 280 | SYSCTL_DESCR("Berkeley Fast File System" ), |
| 281 | NULL, 0, NULL, 0, |
| 282 | CTL_VFS, 1, CTL_EOL); |
| 283 | /* |
| 284 | * @@@ should we even bother with these first three? |
| 285 | */ |
| 286 | sysctl_createv(&ffs_sysctl_log, 0, NULL, NULL, |
| 287 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 288 | CTLTYPE_INT, "doclusterread" , NULL, |
| 289 | sysctl_notavail, 0, NULL, 0, |
| 290 | CTL_VFS, 1, FFS_CLUSTERREAD, CTL_EOL); |
| 291 | sysctl_createv(&ffs_sysctl_log, 0, NULL, NULL, |
| 292 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 293 | CTLTYPE_INT, "doclusterwrite" , NULL, |
| 294 | sysctl_notavail, 0, NULL, 0, |
| 295 | CTL_VFS, 1, FFS_CLUSTERWRITE, CTL_EOL); |
| 296 | sysctl_createv(&ffs_sysctl_log, 0, NULL, NULL, |
| 297 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 298 | CTLTYPE_INT, "doreallocblks" , NULL, |
| 299 | sysctl_notavail, 0, NULL, 0, |
| 300 | CTL_VFS, 1, FFS_REALLOCBLKS, CTL_EOL); |
| 301 | #if 0 |
| 302 | sysctl_createv(&ffs_sysctl_log, 0, NULL, NULL, |
| 303 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 304 | CTLTYPE_INT, "doasyncfree" , |
| 305 | SYSCTL_DESCR("Release dirty blocks asynchronously" ), |
| 306 | NULL, 0, &doasyncfree, 0, |
| 307 | CTL_VFS, 1, FFS_ASYNCFREE, CTL_EOL); |
| 308 | #endif |
| 309 | sysctl_createv(&ffs_sysctl_log, 0, NULL, NULL, |
| 310 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 311 | CTLTYPE_INT, "log_changeopt" , |
| 312 | SYSCTL_DESCR("Log changes in optimization strategy" ), |
| 313 | NULL, 0, &ffs_log_changeopt, 0, |
| 314 | CTL_VFS, 1, FFS_LOG_CHANGEOPT, CTL_EOL); |
| 315 | #ifdef UFS_EXTATTR |
| 316 | sysctl_createv(&ffs_sysctl_log, 0, NULL, NULL, |
| 317 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 318 | CTLTYPE_INT, "extattr_autocreate" , |
| 319 | SYSCTL_DESCR("Size of attribute for " |
| 320 | "backing file autocreation" ), |
| 321 | NULL, 0, &ufs_extattr_autocreate, 0, |
| 322 | CTL_VFS, 1, FFS_EXTATTR_AUTOCREATE, CTL_EOL); |
| 323 | |
| 324 | #endif /* UFS_EXTATTR */ |
| 325 | |
| 326 | ffs_snapshot_listener = kauth_listen_scope(KAUTH_SCOPE_SYSTEM, |
| 327 | ffs_snapshot_cb, NULL); |
| 328 | if (ffs_snapshot_listener == NULL) |
| 329 | printf("ffs_modcmd: can't listen on system scope.\n" ); |
| 330 | |
| 331 | break; |
| 332 | case MODULE_CMD_FINI: |
| 333 | error = vfs_detach(&ffs_vfsops); |
| 334 | if (error != 0) |
| 335 | break; |
| 336 | sysctl_teardown(&ffs_sysctl_log); |
| 337 | if (ffs_snapshot_listener != NULL) |
| 338 | kauth_unlisten_scope(ffs_snapshot_listener); |
| 339 | break; |
| 340 | default: |
| 341 | error = ENOTTY; |
| 342 | break; |
| 343 | } |
| 344 | |
| 345 | return (error); |
| 346 | } |
| 347 | |
| 348 | pool_cache_t ffs_inode_cache; |
| 349 | pool_cache_t ffs_dinode1_cache; |
| 350 | pool_cache_t ffs_dinode2_cache; |
| 351 | |
| 352 | static void ffs_oldfscompat_read(struct fs *, struct ufsmount *, daddr_t); |
| 353 | static void ffs_oldfscompat_write(struct fs *, struct ufsmount *); |
| 354 | |
| 355 | /* |
| 356 | * Called by main() when ffs is going to be mounted as root. |
| 357 | */ |
| 358 | |
| 359 | int |
| 360 | ffs_mountroot(void) |
| 361 | { |
| 362 | struct fs *fs; |
| 363 | struct mount *mp; |
| 364 | struct lwp *l = curlwp; /* XXX */ |
| 365 | struct ufsmount *ump; |
| 366 | int error; |
| 367 | |
| 368 | if (device_class(root_device) != DV_DISK) |
| 369 | return (ENODEV); |
| 370 | |
| 371 | if ((error = vfs_rootmountalloc(MOUNT_FFS, "root_device" , &mp))) { |
| 372 | vrele(rootvp); |
| 373 | return (error); |
| 374 | } |
| 375 | |
| 376 | /* |
| 377 | * We always need to be able to mount the root file system. |
| 378 | */ |
| 379 | mp->mnt_flag |= MNT_FORCE; |
| 380 | if ((error = ffs_mountfs(rootvp, mp, l)) != 0) { |
| 381 | vfs_unbusy(mp, false, NULL); |
| 382 | vfs_destroy(mp); |
| 383 | return (error); |
| 384 | } |
| 385 | mp->mnt_flag &= ~MNT_FORCE; |
| 386 | mountlist_append(mp); |
| 387 | ump = VFSTOUFS(mp); |
| 388 | fs = ump->um_fs; |
| 389 | memset(fs->fs_fsmnt, 0, sizeof(fs->fs_fsmnt)); |
| 390 | (void)copystr(mp->mnt_stat.f_mntonname, fs->fs_fsmnt, MNAMELEN - 1, 0); |
| 391 | (void)ffs_statvfs(mp, &mp->mnt_stat); |
| 392 | vfs_unbusy(mp, false, NULL); |
| 393 | setrootfstime((time_t)fs->fs_time); |
| 394 | return (0); |
| 395 | } |
| 396 | |
| 397 | /* |
| 398 | * VFS Operations. |
| 399 | * |
| 400 | * mount system call |
| 401 | */ |
| 402 | int |
| 403 | ffs_mount(struct mount *mp, const char *path, void *data, size_t *data_len) |
| 404 | { |
| 405 | struct lwp *l = curlwp; |
| 406 | struct vnode *devvp = NULL; |
| 407 | struct ufs_args *args = data; |
| 408 | struct ufsmount *ump = NULL; |
| 409 | struct fs *fs; |
| 410 | int error = 0, flags, update; |
| 411 | mode_t accessmode; |
| 412 | |
| 413 | if (args == NULL) { |
| 414 | DPRINTF("NULL args" ); |
| 415 | return EINVAL; |
| 416 | } |
| 417 | if (*data_len < sizeof(*args)) { |
| 418 | DPRINTF("bad size args %zu != %zu" , *data_len, sizeof(*args)); |
| 419 | return EINVAL; |
| 420 | } |
| 421 | |
| 422 | if (mp->mnt_flag & MNT_GETARGS) { |
| 423 | ump = VFSTOUFS(mp); |
| 424 | if (ump == NULL) { |
| 425 | DPRINTF("no ump" ); |
| 426 | return EIO; |
| 427 | } |
| 428 | args->fspec = NULL; |
| 429 | *data_len = sizeof *args; |
| 430 | return 0; |
| 431 | } |
| 432 | |
| 433 | update = mp->mnt_flag & MNT_UPDATE; |
| 434 | |
| 435 | /* Check arguments */ |
| 436 | if (args->fspec != NULL) { |
| 437 | /* |
| 438 | * Look up the name and verify that it's sane. |
| 439 | */ |
| 440 | error = namei_simple_user(args->fspec, |
| 441 | NSM_FOLLOW_NOEMULROOT, &devvp); |
| 442 | if (error != 0) { |
| 443 | DPRINTF("namei_simple_user returned %d" , error); |
| 444 | return error; |
| 445 | } |
| 446 | |
| 447 | if (!update) { |
| 448 | /* |
| 449 | * Be sure this is a valid block device |
| 450 | */ |
| 451 | if (devvp->v_type != VBLK) { |
| 452 | DPRINTF("non block device %d" , devvp->v_type); |
| 453 | error = ENOTBLK; |
| 454 | } else if (bdevsw_lookup(devvp->v_rdev) == NULL) { |
| 455 | DPRINTF("can't find block device 0x%jx" , |
| 456 | devvp->v_rdev); |
| 457 | error = ENXIO; |
| 458 | } |
| 459 | } else { |
| 460 | /* |
| 461 | * Be sure we're still naming the same device |
| 462 | * used for our initial mount |
| 463 | */ |
| 464 | ump = VFSTOUFS(mp); |
| 465 | if (devvp != ump->um_devvp) { |
| 466 | if (devvp->v_rdev != ump->um_devvp->v_rdev) { |
| 467 | DPRINTF("wrong device 0x%jx != 0x%jx" , |
| 468 | (uintmax_t)devvp->v_rdev, |
| 469 | (uintmax_t)ump->um_devvp->v_rdev); |
| 470 | error = EINVAL; |
| 471 | } else { |
| 472 | vrele(devvp); |
| 473 | devvp = ump->um_devvp; |
| 474 | vref(devvp); |
| 475 | } |
| 476 | } |
| 477 | } |
| 478 | } else { |
| 479 | if (!update) { |
| 480 | /* New mounts must have a filename for the device */ |
| 481 | DPRINTF("no filename for mount" ); |
| 482 | return EINVAL; |
| 483 | } else { |
| 484 | /* Use the extant mount */ |
| 485 | ump = VFSTOUFS(mp); |
| 486 | devvp = ump->um_devvp; |
| 487 | vref(devvp); |
| 488 | } |
| 489 | } |
| 490 | |
| 491 | /* |
| 492 | * If mount by non-root, then verify that user has necessary |
| 493 | * permissions on the device. |
| 494 | * |
| 495 | * Permission to update a mount is checked higher, so here we presume |
| 496 | * updating the mount is okay (for example, as far as securelevel goes) |
| 497 | * which leaves us with the normal check. |
| 498 | */ |
| 499 | if (error == 0) { |
| 500 | accessmode = VREAD; |
| 501 | if (update ? |
| 502 | (mp->mnt_iflag & IMNT_WANTRDWR) != 0 : |
| 503 | (mp->mnt_flag & MNT_RDONLY) == 0) |
| 504 | accessmode |= VWRITE; |
| 505 | vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); |
| 506 | error = kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_MOUNT, |
| 507 | KAUTH_REQ_SYSTEM_MOUNT_DEVICE, mp, devvp, |
| 508 | KAUTH_ARG(accessmode)); |
| 509 | if (error) { |
| 510 | DPRINTF("kauth returned %d" , error); |
| 511 | } |
| 512 | VOP_UNLOCK(devvp); |
| 513 | } |
| 514 | |
| 515 | if (error) { |
| 516 | vrele(devvp); |
| 517 | return (error); |
| 518 | } |
| 519 | |
| 520 | #ifdef WAPBL |
| 521 | /* WAPBL can only be enabled on a r/w mount. */ |
| 522 | if ((mp->mnt_flag & MNT_RDONLY) && !(mp->mnt_iflag & IMNT_WANTRDWR)) { |
| 523 | mp->mnt_flag &= ~MNT_LOG; |
| 524 | } |
| 525 | #else /* !WAPBL */ |
| 526 | mp->mnt_flag &= ~MNT_LOG; |
| 527 | #endif /* !WAPBL */ |
| 528 | |
| 529 | if (!update) { |
| 530 | int xflags; |
| 531 | |
| 532 | if (mp->mnt_flag & MNT_RDONLY) |
| 533 | xflags = FREAD; |
| 534 | else |
| 535 | xflags = FREAD | FWRITE; |
| 536 | vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); |
| 537 | error = VOP_OPEN(devvp, xflags, FSCRED); |
| 538 | VOP_UNLOCK(devvp); |
| 539 | if (error) { |
| 540 | DPRINTF("VOP_OPEN returned %d" , error); |
| 541 | goto fail; |
| 542 | } |
| 543 | error = ffs_mountfs(devvp, mp, l); |
| 544 | if (error) { |
| 545 | DPRINTF("ffs_mountfs returned %d" , error); |
| 546 | vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); |
| 547 | (void)VOP_CLOSE(devvp, xflags, NOCRED); |
| 548 | VOP_UNLOCK(devvp); |
| 549 | goto fail; |
| 550 | } |
| 551 | |
| 552 | ump = VFSTOUFS(mp); |
| 553 | fs = ump->um_fs; |
| 554 | } else { |
| 555 | /* |
| 556 | * Update the mount. |
| 557 | */ |
| 558 | |
| 559 | /* |
| 560 | * The initial mount got a reference on this |
| 561 | * device, so drop the one obtained via |
| 562 | * namei(), above. |
| 563 | */ |
| 564 | vrele(devvp); |
| 565 | |
| 566 | ump = VFSTOUFS(mp); |
| 567 | fs = ump->um_fs; |
| 568 | if (fs->fs_ronly == 0 && (mp->mnt_flag & MNT_RDONLY)) { |
| 569 | /* |
| 570 | * Changing from r/w to r/o |
| 571 | */ |
| 572 | flags = WRITECLOSE; |
| 573 | if (mp->mnt_flag & MNT_FORCE) |
| 574 | flags |= FORCECLOSE; |
| 575 | error = ffs_flushfiles(mp, flags, l); |
| 576 | if (error == 0) |
| 577 | error = UFS_WAPBL_BEGIN(mp); |
| 578 | if (error == 0 && |
| 579 | ffs_cgupdate(ump, MNT_WAIT) == 0 && |
| 580 | fs->fs_clean & FS_WASCLEAN) { |
| 581 | if (mp->mnt_flag & MNT_SOFTDEP) |
| 582 | fs->fs_flags &= ~FS_DOSOFTDEP; |
| 583 | fs->fs_clean = FS_ISCLEAN; |
| 584 | (void) ffs_sbupdate(ump, MNT_WAIT); |
| 585 | } |
| 586 | if (error) { |
| 587 | DPRINTF("wapbl %d" , error); |
| 588 | return error; |
| 589 | } |
| 590 | UFS_WAPBL_END(mp); |
| 591 | } |
| 592 | |
| 593 | #ifdef WAPBL |
| 594 | if ((mp->mnt_flag & MNT_LOG) == 0) { |
| 595 | error = ffs_wapbl_stop(mp, mp->mnt_flag & MNT_FORCE); |
| 596 | if (error) { |
| 597 | DPRINTF("ffs_wapbl_stop returned %d" , error); |
| 598 | return error; |
| 599 | } |
| 600 | } |
| 601 | #endif /* WAPBL */ |
| 602 | |
| 603 | if (fs->fs_ronly == 0 && (mp->mnt_flag & MNT_RDONLY)) { |
| 604 | /* |
| 605 | * Finish change from r/w to r/o |
| 606 | */ |
| 607 | fs->fs_ronly = 1; |
| 608 | fs->fs_fmod = 0; |
| 609 | } |
| 610 | |
| 611 | if (mp->mnt_flag & MNT_RELOAD) { |
| 612 | error = ffs_reload(mp, l->l_cred, l); |
| 613 | if (error) { |
| 614 | DPRINTF("ffs_reload returned %d" , error); |
| 615 | return error; |
| 616 | } |
| 617 | } |
| 618 | |
| 619 | if (fs->fs_ronly && (mp->mnt_iflag & IMNT_WANTRDWR)) { |
| 620 | /* |
| 621 | * Changing from read-only to read/write |
| 622 | */ |
| 623 | #ifndef QUOTA2 |
| 624 | if (fs->fs_flags & FS_DOQUOTA2) { |
| 625 | ump->um_flags |= UFS_QUOTA2; |
| 626 | uprintf("%s: options QUOTA2 not enabled%s\n" , |
| 627 | mp->mnt_stat.f_mntonname, |
| 628 | (mp->mnt_flag & MNT_FORCE) ? "" : |
| 629 | ", not mounting" ); |
| 630 | DPRINTF("ffs_quota2 %d" , EINVAL); |
| 631 | return EINVAL; |
| 632 | } |
| 633 | #endif |
| 634 | fs->fs_ronly = 0; |
| 635 | fs->fs_clean <<= 1; |
| 636 | fs->fs_fmod = 1; |
| 637 | #ifdef WAPBL |
| 638 | if (fs->fs_flags & FS_DOWAPBL) { |
| 639 | const char *nm = mp->mnt_stat.f_mntonname; |
| 640 | if (!mp->mnt_wapbl_replay) { |
| 641 | printf("%s: log corrupted;" |
| 642 | " replay cancelled\n" , nm); |
| 643 | return EFTYPE; |
| 644 | } |
| 645 | printf("%s: replaying log to disk\n" , nm); |
| 646 | error = wapbl_replay_write(mp->mnt_wapbl_replay, |
| 647 | devvp); |
| 648 | if (error) { |
| 649 | DPRINTF("%s: wapbl_replay_write %d" , |
| 650 | nm, error); |
| 651 | return error; |
| 652 | } |
| 653 | wapbl_replay_stop(mp->mnt_wapbl_replay); |
| 654 | fs->fs_clean = FS_WASCLEAN; |
| 655 | } |
| 656 | #endif /* WAPBL */ |
| 657 | if (fs->fs_snapinum[0] != 0) |
| 658 | ffs_snapshot_mount(mp); |
| 659 | } |
| 660 | |
| 661 | #ifdef WAPBL |
| 662 | error = ffs_wapbl_start(mp); |
| 663 | if (error) { |
| 664 | DPRINTF("ffs_wapbl_start returned %d" , error); |
| 665 | return error; |
| 666 | } |
| 667 | #endif /* WAPBL */ |
| 668 | |
| 669 | #ifdef QUOTA2 |
| 670 | if (!fs->fs_ronly) { |
| 671 | error = ffs_quota2_mount(mp); |
| 672 | if (error) { |
| 673 | DPRINTF("ffs_quota2_mount returned %d" , error); |
| 674 | return error; |
| 675 | } |
| 676 | } |
| 677 | #endif |
| 678 | |
| 679 | if ((mp->mnt_flag & MNT_DISCARD) && !(ump->um_discarddata)) |
| 680 | ump->um_discarddata = ffs_discard_init(devvp, fs); |
| 681 | |
| 682 | if (args->fspec == NULL) |
| 683 | return 0; |
| 684 | } |
| 685 | |
| 686 | error = set_statvfs_info(path, UIO_USERSPACE, args->fspec, |
| 687 | UIO_USERSPACE, mp->mnt_op->vfs_name, mp, l); |
| 688 | if (error == 0) |
| 689 | (void)strncpy(fs->fs_fsmnt, mp->mnt_stat.f_mntonname, |
| 690 | sizeof(fs->fs_fsmnt)); |
| 691 | else { |
| 692 | DPRINTF("set_statvfs_info returned %d" , error); |
| 693 | } |
| 694 | fs->fs_flags &= ~FS_DOSOFTDEP; |
| 695 | if (fs->fs_fmod != 0) { /* XXX */ |
| 696 | int err; |
| 697 | |
| 698 | fs->fs_fmod = 0; |
| 699 | if (fs->fs_clean & FS_WASCLEAN) |
| 700 | fs->fs_time = time_second; |
| 701 | else { |
| 702 | printf("%s: file system not clean (fs_clean=%#x); " |
| 703 | "please fsck(8)\n" , mp->mnt_stat.f_mntfromname, |
| 704 | fs->fs_clean); |
| 705 | printf("%s: lost blocks %" PRId64 " files %d\n" , |
| 706 | mp->mnt_stat.f_mntfromname, fs->fs_pendingblocks, |
| 707 | fs->fs_pendinginodes); |
| 708 | } |
| 709 | err = UFS_WAPBL_BEGIN(mp); |
| 710 | if (err == 0) { |
| 711 | (void) ffs_cgupdate(ump, MNT_WAIT); |
| 712 | UFS_WAPBL_END(mp); |
| 713 | } |
| 714 | } |
| 715 | if ((mp->mnt_flag & MNT_SOFTDEP) != 0) { |
| 716 | printf("%s: `-o softdep' is no longer supported, " |
| 717 | "consider `-o log'\n" , mp->mnt_stat.f_mntfromname); |
| 718 | mp->mnt_flag &= ~MNT_SOFTDEP; |
| 719 | } |
| 720 | |
| 721 | return (error); |
| 722 | |
| 723 | fail: |
| 724 | vrele(devvp); |
| 725 | return (error); |
| 726 | } |
| 727 | |
| 728 | /* |
| 729 | * Reload all incore data for a filesystem (used after running fsck on |
| 730 | * the root filesystem and finding things to fix). The filesystem must |
| 731 | * be mounted read-only. |
| 732 | * |
| 733 | * Things to do to update the mount: |
| 734 | * 1) invalidate all cached meta-data. |
| 735 | * 2) re-read superblock from disk. |
| 736 | * 3) re-read summary information from disk. |
| 737 | * 4) invalidate all inactive vnodes. |
| 738 | * 5) invalidate all cached file data. |
| 739 | * 6) re-read inode data for all active vnodes. |
| 740 | */ |
| 741 | int |
| 742 | ffs_reload(struct mount *mp, kauth_cred_t cred, struct lwp *l) |
| 743 | { |
| 744 | struct vnode *vp, *devvp; |
| 745 | struct inode *ip; |
| 746 | void *space; |
| 747 | struct buf *bp; |
| 748 | struct fs *fs, *newfs; |
| 749 | int i, bsize, blks, error; |
| 750 | int32_t *lp, fs_sbsize; |
| 751 | struct ufsmount *ump; |
| 752 | daddr_t sblockloc; |
| 753 | struct vnode_iterator *marker; |
| 754 | |
| 755 | if ((mp->mnt_flag & MNT_RDONLY) == 0) |
| 756 | return (EINVAL); |
| 757 | |
| 758 | ump = VFSTOUFS(mp); |
| 759 | |
| 760 | /* |
| 761 | * Step 1: invalidate all cached meta-data. |
| 762 | */ |
| 763 | devvp = ump->um_devvp; |
| 764 | vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); |
| 765 | error = vinvalbuf(devvp, 0, cred, l, 0, 0); |
| 766 | VOP_UNLOCK(devvp); |
| 767 | if (error) |
| 768 | panic("%s: dirty1" , __func__); |
| 769 | |
| 770 | /* |
| 771 | * Step 2: re-read superblock from disk. XXX: We don't handle |
| 772 | * possibility that superblock moved. Which implies that we don't |
| 773 | * want its size to change either. |
| 774 | */ |
| 775 | fs = ump->um_fs; |
| 776 | fs_sbsize = fs->fs_sbsize; |
| 777 | error = bread(devvp, fs->fs_sblockloc / DEV_BSIZE, fs_sbsize, |
| 778 | 0, &bp); |
| 779 | if (error) |
| 780 | return (error); |
| 781 | newfs = kmem_alloc(fs_sbsize, KM_SLEEP); |
| 782 | memcpy(newfs, bp->b_data, fs_sbsize); |
| 783 | |
| 784 | #ifdef FFS_EI |
| 785 | if (ump->um_flags & UFS_NEEDSWAP) { |
| 786 | ffs_sb_swap((struct fs *)bp->b_data, newfs); |
| 787 | newfs->fs_flags |= FS_SWAPPED; |
| 788 | } else |
| 789 | #endif |
| 790 | newfs->fs_flags &= ~FS_SWAPPED; |
| 791 | |
| 792 | brelse(bp, 0); |
| 793 | |
| 794 | if ((newfs->fs_magic != FS_UFS1_MAGIC) && |
| 795 | (newfs->fs_magic != FS_UFS2_MAGIC)) { |
| 796 | kmem_free(newfs, fs_sbsize); |
| 797 | return (EIO); /* XXX needs translation */ |
| 798 | } |
| 799 | if (!ffs_superblock_validate(newfs)) { |
| 800 | kmem_free(newfs, fs_sbsize); |
| 801 | return (EINVAL); |
| 802 | } |
| 803 | |
| 804 | /* |
| 805 | * The current implementation doesn't handle the possibility that |
| 806 | * these values may have changed. |
| 807 | */ |
| 808 | if ((newfs->fs_sbsize != fs_sbsize) || |
| 809 | (newfs->fs_cssize != fs->fs_cssize) || |
| 810 | (newfs->fs_contigsumsize != fs->fs_contigsumsize) || |
| 811 | (newfs->fs_ncg != fs->fs_ncg)) { |
| 812 | kmem_free(newfs, fs_sbsize); |
| 813 | return (EINVAL); |
| 814 | } |
| 815 | |
| 816 | /* Store off old fs_sblockloc for fs_oldfscompat_read. */ |
| 817 | sblockloc = fs->fs_sblockloc; |
| 818 | /* |
| 819 | * Copy pointer fields back into superblock before copying in XXX |
| 820 | * new superblock. These should really be in the ufsmount. XXX |
| 821 | * Note that important parameters (eg fs_ncg) are unchanged. |
| 822 | */ |
| 823 | newfs->fs_csp = fs->fs_csp; |
| 824 | newfs->fs_maxcluster = fs->fs_maxcluster; |
| 825 | newfs->fs_contigdirs = fs->fs_contigdirs; |
| 826 | newfs->fs_ronly = fs->fs_ronly; |
| 827 | newfs->fs_active = fs->fs_active; |
| 828 | memcpy(fs, newfs, (u_int)fs_sbsize); |
| 829 | kmem_free(newfs, fs_sbsize); |
| 830 | |
| 831 | /* |
| 832 | * Recheck for Apple UFS filesystem. |
| 833 | */ |
| 834 | ump->um_flags &= ~UFS_ISAPPLEUFS; |
| 835 | if (ffs_is_appleufs(devvp, fs)) { |
| 836 | #ifdef APPLE_UFS |
| 837 | ump->um_flags |= UFS_ISAPPLEUFS; |
| 838 | #else |
| 839 | DPRINTF("AppleUFS not supported" ); |
| 840 | return (EIO); /* XXX: really? */ |
| 841 | #endif |
| 842 | } |
| 843 | |
| 844 | if (UFS_MPISAPPLEUFS(ump)) { |
| 845 | /* see comment about NeXT below */ |
| 846 | ump->um_maxsymlinklen = APPLEUFS_MAXSYMLINKLEN; |
| 847 | ump->um_dirblksiz = APPLEUFS_DIRBLKSIZ; |
| 848 | mp->mnt_iflag |= IMNT_DTYPE; |
| 849 | } else { |
| 850 | ump->um_maxsymlinklen = fs->fs_maxsymlinklen; |
| 851 | ump->um_dirblksiz = UFS_DIRBLKSIZ; |
| 852 | if (ump->um_maxsymlinklen > 0) |
| 853 | mp->mnt_iflag |= IMNT_DTYPE; |
| 854 | else |
| 855 | mp->mnt_iflag &= ~IMNT_DTYPE; |
| 856 | } |
| 857 | ffs_oldfscompat_read(fs, ump, sblockloc); |
| 858 | |
| 859 | mutex_enter(&ump->um_lock); |
| 860 | ump->um_maxfilesize = fs->fs_maxfilesize; |
| 861 | if (fs->fs_flags & ~(FS_KNOWN_FLAGS | FS_INTERNAL)) { |
| 862 | uprintf("%s: unknown ufs flags: 0x%08" PRIx32"%s\n" , |
| 863 | mp->mnt_stat.f_mntonname, fs->fs_flags, |
| 864 | (mp->mnt_flag & MNT_FORCE) ? "" : ", not mounting" ); |
| 865 | if ((mp->mnt_flag & MNT_FORCE) == 0) { |
| 866 | mutex_exit(&ump->um_lock); |
| 867 | return (EINVAL); |
| 868 | } |
| 869 | } |
| 870 | if (fs->fs_pendingblocks != 0 || fs->fs_pendinginodes != 0) { |
| 871 | fs->fs_pendingblocks = 0; |
| 872 | fs->fs_pendinginodes = 0; |
| 873 | } |
| 874 | mutex_exit(&ump->um_lock); |
| 875 | |
| 876 | ffs_statvfs(mp, &mp->mnt_stat); |
| 877 | /* |
| 878 | * Step 3: re-read summary information from disk. |
| 879 | */ |
| 880 | blks = howmany(fs->fs_cssize, fs->fs_fsize); |
| 881 | space = fs->fs_csp; |
| 882 | for (i = 0; i < blks; i += fs->fs_frag) { |
| 883 | bsize = fs->fs_bsize; |
| 884 | if (i + fs->fs_frag > blks) |
| 885 | bsize = (blks - i) * fs->fs_fsize; |
| 886 | error = bread(devvp, FFS_FSBTODB(fs, fs->fs_csaddr + i), bsize, |
| 887 | 0, &bp); |
| 888 | if (error) { |
| 889 | return (error); |
| 890 | } |
| 891 | #ifdef FFS_EI |
| 892 | if (UFS_FSNEEDSWAP(fs)) |
| 893 | ffs_csum_swap((struct csum *)bp->b_data, |
| 894 | (struct csum *)space, bsize); |
| 895 | else |
| 896 | #endif |
| 897 | memcpy(space, bp->b_data, (size_t)bsize); |
| 898 | space = (char *)space + bsize; |
| 899 | brelse(bp, 0); |
| 900 | } |
| 901 | /* |
| 902 | * We no longer know anything about clusters per cylinder group. |
| 903 | */ |
| 904 | if (fs->fs_contigsumsize > 0) { |
| 905 | lp = fs->fs_maxcluster; |
| 906 | for (i = 0; i < fs->fs_ncg; i++) |
| 907 | *lp++ = fs->fs_contigsumsize; |
| 908 | } |
| 909 | |
| 910 | vfs_vnode_iterator_init(mp, &marker); |
| 911 | while ((vp = vfs_vnode_iterator_next(marker, NULL, NULL))) { |
| 912 | /* |
| 913 | * Step 4: invalidate all inactive vnodes. |
| 914 | */ |
| 915 | if (vrecycle(vp)) |
| 916 | continue; |
| 917 | /* |
| 918 | * Step 5: invalidate all cached file data. |
| 919 | */ |
| 920 | if (vn_lock(vp, LK_EXCLUSIVE)) { |
| 921 | vrele(vp); |
| 922 | continue; |
| 923 | } |
| 924 | if (vinvalbuf(vp, 0, cred, l, 0, 0)) |
| 925 | panic("%s: dirty2" , __func__); |
| 926 | /* |
| 927 | * Step 6: re-read inode data for all active vnodes. |
| 928 | */ |
| 929 | ip = VTOI(vp); |
| 930 | error = bread(devvp, FFS_FSBTODB(fs, ino_to_fsba(fs, ip->i_number)), |
| 931 | (int)fs->fs_bsize, 0, &bp); |
| 932 | if (error) { |
| 933 | vput(vp); |
| 934 | break; |
| 935 | } |
| 936 | ffs_load_inode(bp, ip, fs, ip->i_number); |
| 937 | brelse(bp, 0); |
| 938 | vput(vp); |
| 939 | } |
| 940 | vfs_vnode_iterator_destroy(marker); |
| 941 | return (error); |
| 942 | } |
| 943 | |
| 944 | /* |
| 945 | * Possible superblock locations ordered from most to least likely. |
| 946 | */ |
| 947 | static const int sblock_try[] = SBLOCKSEARCH; |
| 948 | |
| 949 | |
| 950 | static int |
| 951 | ffs_superblock_validate(struct fs *fs) |
| 952 | { |
| 953 | int32_t i, fs_bshift = 0, fs_fshift = 0, fs_fragshift = 0, fs_frag; |
| 954 | int32_t fs_inopb; |
| 955 | |
| 956 | /* Check the superblock size */ |
| 957 | if (fs->fs_sbsize > SBLOCKSIZE || fs->fs_sbsize < sizeof(struct fs)) |
| 958 | return 0; |
| 959 | |
| 960 | /* Check the file system blocksize */ |
| 961 | if (fs->fs_bsize > MAXBSIZE || fs->fs_bsize < MINBSIZE) |
| 962 | return 0; |
| 963 | if (!powerof2(fs->fs_bsize)) |
| 964 | return 0; |
| 965 | |
| 966 | /* Check the size of frag blocks */ |
| 967 | if (!powerof2(fs->fs_fsize)) |
| 968 | return 0; |
| 969 | if (fs->fs_fsize == 0) |
| 970 | return 0; |
| 971 | |
| 972 | /* |
| 973 | * XXX: these values are just zero-checked to prevent obvious |
| 974 | * bugs. We need more strict checks. |
| 975 | */ |
| 976 | if (fs->fs_size == 0) |
| 977 | return 0; |
| 978 | if (fs->fs_cssize == 0) |
| 979 | return 0; |
| 980 | if (fs->fs_ipg == 0) |
| 981 | return 0; |
| 982 | if (fs->fs_fpg == 0) |
| 983 | return 0; |
| 984 | if (fs->fs_ncg == 0) |
| 985 | return 0; |
| 986 | if (fs->fs_maxbpg == 0) |
| 987 | return 0; |
| 988 | |
| 989 | /* Check the number of inodes per block */ |
| 990 | if (fs->fs_magic == FS_UFS1_MAGIC) |
| 991 | fs_inopb = fs->fs_bsize / sizeof(struct ufs1_dinode); |
| 992 | else /* fs->fs_magic == FS_UFS2_MAGIC */ |
| 993 | fs_inopb = fs->fs_bsize / sizeof(struct ufs2_dinode); |
| 994 | if (fs->fs_inopb != fs_inopb) |
| 995 | return 0; |
| 996 | |
| 997 | /* Block size cannot be smaller than fragment size */ |
| 998 | if (fs->fs_bsize < fs->fs_fsize) |
| 999 | return 0; |
| 1000 | |
| 1001 | /* Compute fs_bshift and ensure it is consistent */ |
| 1002 | for (i = fs->fs_bsize; i > 1; i >>= 1) |
| 1003 | fs_bshift++; |
| 1004 | if (fs->fs_bshift != fs_bshift) |
| 1005 | return 0; |
| 1006 | |
| 1007 | /* Compute fs_fshift and ensure it is consistent */ |
| 1008 | for (i = fs->fs_fsize; i > 1; i >>= 1) |
| 1009 | fs_fshift++; |
| 1010 | if (fs->fs_fshift != fs_fshift) |
| 1011 | return 0; |
| 1012 | |
| 1013 | /* Compute fs_fragshift and ensure it is consistent */ |
| 1014 | for (i = fs->fs_frag; i > 1; i >>= 1) |
| 1015 | fs_fragshift++; |
| 1016 | if (fs->fs_fragshift != fs_fragshift) |
| 1017 | return 0; |
| 1018 | |
| 1019 | /* Check the masks */ |
| 1020 | if (fs->fs_bmask != ~(fs->fs_bsize - 1)) |
| 1021 | return 0; |
| 1022 | if (fs->fs_fmask != ~(fs->fs_fsize - 1)) |
| 1023 | return 0; |
| 1024 | |
| 1025 | /* |
| 1026 | * Now that the shifts and masks are sanitized, we can use the ffs_ API. |
| 1027 | */ |
| 1028 | |
| 1029 | /* Check the number of frag blocks */ |
| 1030 | if ((fs_frag = ffs_numfrags(fs, fs->fs_bsize)) > MAXFRAG) |
| 1031 | return 0; |
| 1032 | if (fs->fs_frag != fs_frag) |
| 1033 | return 0; |
| 1034 | |
| 1035 | /* Check the size of cylinder groups */ |
| 1036 | if ((fs->fs_cgsize < sizeof(struct cg)) || |
| 1037 | (fs->fs_cgsize > fs->fs_bsize)) |
| 1038 | return 0; |
| 1039 | |
| 1040 | return 1; |
| 1041 | } |
| 1042 | |
| 1043 | static int |
| 1044 | ffs_is_appleufs(struct vnode *devvp, struct fs *fs) |
| 1045 | { |
| 1046 | struct dkwedge_info dkw; |
| 1047 | int ret = 0; |
| 1048 | |
| 1049 | /* |
| 1050 | * First check to see if this is tagged as an Apple UFS filesystem |
| 1051 | * in the disklabel. |
| 1052 | */ |
| 1053 | if (getdiskinfo(devvp, &dkw) == 0 && |
| 1054 | strcmp(dkw.dkw_ptype, DKW_PTYPE_APPLEUFS) == 0) |
| 1055 | ret = 1; |
| 1056 | #ifdef APPLE_UFS |
| 1057 | else { |
| 1058 | struct appleufslabel *applefs; |
| 1059 | struct buf *bp; |
| 1060 | daddr_t blkno = APPLEUFS_LABEL_OFFSET / DEV_BSIZE; |
| 1061 | int error; |
| 1062 | |
| 1063 | /* |
| 1064 | * Manually look for an Apple UFS label, and if a valid one |
| 1065 | * is found, then treat it like an Apple UFS filesystem anyway. |
| 1066 | */ |
| 1067 | error = bread(devvp, blkno, APPLEUFS_LABEL_SIZE, 0, &bp); |
| 1068 | if (error) { |
| 1069 | DPRINTF("bread@0x%jx returned %d" , (intmax_t)blkno, error); |
| 1070 | return 0; |
| 1071 | } |
| 1072 | applefs = (struct appleufslabel *)bp->b_data; |
| 1073 | error = ffs_appleufs_validate(fs->fs_fsmnt, applefs, NULL); |
| 1074 | if (error == 0) |
| 1075 | ret = 1; |
| 1076 | brelse(bp, 0); |
| 1077 | } |
| 1078 | #endif |
| 1079 | |
| 1080 | return ret; |
| 1081 | } |
| 1082 | |
| 1083 | /* |
| 1084 | * Common code for mount and mountroot |
| 1085 | */ |
| 1086 | int |
| 1087 | ffs_mountfs(struct vnode *devvp, struct mount *mp, struct lwp *l) |
| 1088 | { |
| 1089 | struct ufsmount *ump = NULL; |
| 1090 | struct buf *bp = NULL; |
| 1091 | struct fs *fs = NULL; |
| 1092 | dev_t dev; |
| 1093 | void *space; |
| 1094 | daddr_t sblockloc = 0; |
| 1095 | int blks, fstype = 0; |
| 1096 | int error, i, bsize, ronly, bset = 0; |
| 1097 | #ifdef FFS_EI |
| 1098 | int needswap = 0; /* keep gcc happy */ |
| 1099 | #endif |
| 1100 | int32_t *lp; |
| 1101 | kauth_cred_t cred; |
| 1102 | u_int32_t allocsbsize, fs_sbsize = 0; |
| 1103 | |
| 1104 | dev = devvp->v_rdev; |
| 1105 | cred = l ? l->l_cred : NOCRED; |
| 1106 | |
| 1107 | /* Flush out any old buffers remaining from a previous use. */ |
| 1108 | vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); |
| 1109 | error = vinvalbuf(devvp, V_SAVE, cred, l, 0, 0); |
| 1110 | VOP_UNLOCK(devvp); |
| 1111 | if (error) { |
| 1112 | DPRINTF("vinvalbuf returned %d" , error); |
| 1113 | return error; |
| 1114 | } |
| 1115 | |
| 1116 | ronly = (mp->mnt_flag & MNT_RDONLY) != 0; |
| 1117 | |
| 1118 | error = fstrans_mount(mp); |
| 1119 | if (error) { |
| 1120 | DPRINTF("fstrans_mount returned %d" , error); |
| 1121 | return error; |
| 1122 | } |
| 1123 | |
| 1124 | ump = kmem_zalloc(sizeof(*ump), KM_SLEEP); |
| 1125 | mutex_init(&ump->um_lock, MUTEX_DEFAULT, IPL_NONE); |
| 1126 | error = ffs_snapshot_init(ump); |
| 1127 | if (error) { |
| 1128 | DPRINTF("ffs_snapshot_init returned %d" , error); |
| 1129 | goto out; |
| 1130 | } |
| 1131 | ump->um_ops = &ffs_ufsops; |
| 1132 | |
| 1133 | #ifdef WAPBL |
| 1134 | sbagain: |
| 1135 | #endif |
| 1136 | /* |
| 1137 | * Try reading the superblock in each of its possible locations. |
| 1138 | */ |
| 1139 | for (i = 0; ; i++) { |
| 1140 | daddr_t fs_sblockloc; |
| 1141 | |
| 1142 | if (bp != NULL) { |
| 1143 | brelse(bp, BC_NOCACHE); |
| 1144 | bp = NULL; |
| 1145 | } |
| 1146 | if (sblock_try[i] == -1) { |
| 1147 | DPRINTF("no superblock found" ); |
| 1148 | error = EINVAL; |
| 1149 | fs = NULL; |
| 1150 | goto out; |
| 1151 | } |
| 1152 | |
| 1153 | error = bread(devvp, sblock_try[i] / DEV_BSIZE, SBLOCKSIZE, |
| 1154 | 0, &bp); |
| 1155 | if (error) { |
| 1156 | DPRINTF("bread@0x%x returned %d" , |
| 1157 | sblock_try[i] / DEV_BSIZE, error); |
| 1158 | fs = NULL; |
| 1159 | goto out; |
| 1160 | } |
| 1161 | fs = (struct fs *)bp->b_data; |
| 1162 | |
| 1163 | sblockloc = sblock_try[i]; |
| 1164 | DPRINTF("fs_magic 0x%x" , fs->fs_magic); |
| 1165 | |
| 1166 | /* |
| 1167 | * Swap: here, we swap fs->fs_sbsize in order to get the correct |
| 1168 | * size to read the superblock. Once read, we swap the whole |
| 1169 | * superblock structure. |
| 1170 | */ |
| 1171 | if (fs->fs_magic == FS_UFS1_MAGIC) { |
| 1172 | fs_sbsize = fs->fs_sbsize; |
| 1173 | fstype = UFS1; |
| 1174 | #ifdef FFS_EI |
| 1175 | needswap = 0; |
| 1176 | } else if (fs->fs_magic == FS_UFS1_MAGIC_SWAPPED) { |
| 1177 | fs_sbsize = bswap32(fs->fs_sbsize); |
| 1178 | fstype = UFS1; |
| 1179 | needswap = 1; |
| 1180 | #endif |
| 1181 | } else if (fs->fs_magic == FS_UFS2_MAGIC) { |
| 1182 | fs_sbsize = fs->fs_sbsize; |
| 1183 | fstype = UFS2; |
| 1184 | #ifdef FFS_EI |
| 1185 | needswap = 0; |
| 1186 | } else if (fs->fs_magic == FS_UFS2_MAGIC_SWAPPED) { |
| 1187 | fs_sbsize = bswap32(fs->fs_sbsize); |
| 1188 | fstype = UFS2; |
| 1189 | needswap = 1; |
| 1190 | #endif |
| 1191 | } else |
| 1192 | continue; |
| 1193 | |
| 1194 | /* fs->fs_sblockloc isn't defined for old filesystems */ |
| 1195 | if (fstype == UFS1 && !(fs->fs_old_flags & FS_FLAGS_UPDATED)) { |
| 1196 | if (sblockloc == SBLOCK_UFS2) |
| 1197 | /* |
| 1198 | * This is likely to be the first alternate |
| 1199 | * in a filesystem with 64k blocks. |
| 1200 | * Don't use it. |
| 1201 | */ |
| 1202 | continue; |
| 1203 | fs_sblockloc = sblockloc; |
| 1204 | } else { |
| 1205 | fs_sblockloc = fs->fs_sblockloc; |
| 1206 | #ifdef FFS_EI |
| 1207 | if (needswap) |
| 1208 | fs_sblockloc = bswap64(fs_sblockloc); |
| 1209 | #endif |
| 1210 | } |
| 1211 | |
| 1212 | /* Check we haven't found an alternate superblock */ |
| 1213 | if (fs_sblockloc != sblockloc) |
| 1214 | continue; |
| 1215 | |
| 1216 | /* Check the superblock size */ |
| 1217 | if (fs_sbsize > SBLOCKSIZE || fs_sbsize < sizeof(struct fs)) |
| 1218 | continue; |
| 1219 | fs = kmem_alloc((u_long)fs_sbsize, KM_SLEEP); |
| 1220 | memcpy(fs, bp->b_data, fs_sbsize); |
| 1221 | |
| 1222 | /* Swap the whole superblock structure, if necessary. */ |
| 1223 | #ifdef FFS_EI |
| 1224 | if (needswap) { |
| 1225 | ffs_sb_swap((struct fs*)bp->b_data, fs); |
| 1226 | fs->fs_flags |= FS_SWAPPED; |
| 1227 | } else |
| 1228 | #endif |
| 1229 | fs->fs_flags &= ~FS_SWAPPED; |
| 1230 | |
| 1231 | /* |
| 1232 | * Now that everything is swapped, the superblock is ready to |
| 1233 | * be sanitized. |
| 1234 | */ |
| 1235 | if (!ffs_superblock_validate(fs)) { |
| 1236 | kmem_free(fs, fs_sbsize); |
| 1237 | continue; |
| 1238 | } |
| 1239 | |
| 1240 | /* Ok seems to be a good superblock */ |
| 1241 | break; |
| 1242 | } |
| 1243 | |
| 1244 | ump->um_fs = fs; |
| 1245 | |
| 1246 | #ifdef WAPBL |
| 1247 | if ((mp->mnt_wapbl_replay == 0) && (fs->fs_flags & FS_DOWAPBL)) { |
| 1248 | error = ffs_wapbl_replay_start(mp, fs, devvp); |
| 1249 | if (error && (mp->mnt_flag & MNT_FORCE) == 0) { |
| 1250 | DPRINTF("ffs_wapbl_replay_start returned %d" , error); |
| 1251 | goto out; |
| 1252 | } |
| 1253 | if (!error) { |
| 1254 | if (!ronly) { |
| 1255 | /* XXX fsmnt may be stale. */ |
| 1256 | printf("%s: replaying log to disk\n" , |
| 1257 | fs->fs_fsmnt); |
| 1258 | error = wapbl_replay_write(mp->mnt_wapbl_replay, |
| 1259 | devvp); |
| 1260 | if (error) { |
| 1261 | DPRINTF("wapbl_replay_write returned %d" , |
| 1262 | error); |
| 1263 | goto out; |
| 1264 | } |
| 1265 | wapbl_replay_stop(mp->mnt_wapbl_replay); |
| 1266 | fs->fs_clean = FS_WASCLEAN; |
| 1267 | } else { |
| 1268 | /* XXX fsmnt may be stale */ |
| 1269 | printf("%s: replaying log to memory\n" , |
| 1270 | fs->fs_fsmnt); |
| 1271 | } |
| 1272 | |
| 1273 | /* Force a re-read of the superblock */ |
| 1274 | brelse(bp, BC_INVAL); |
| 1275 | bp = NULL; |
| 1276 | kmem_free(fs, fs_sbsize); |
| 1277 | fs = NULL; |
| 1278 | goto sbagain; |
| 1279 | } |
| 1280 | } |
| 1281 | #else /* !WAPBL */ |
| 1282 | if ((fs->fs_flags & FS_DOWAPBL) && (mp->mnt_flag & MNT_FORCE) == 0) { |
| 1283 | error = EPERM; |
| 1284 | DPRINTF("no force %d" , error); |
| 1285 | goto out; |
| 1286 | } |
| 1287 | #endif /* !WAPBL */ |
| 1288 | |
| 1289 | ffs_oldfscompat_read(fs, ump, sblockloc); |
| 1290 | ump->um_maxfilesize = fs->fs_maxfilesize; |
| 1291 | |
| 1292 | if (fs->fs_flags & ~(FS_KNOWN_FLAGS | FS_INTERNAL)) { |
| 1293 | uprintf("%s: unknown ufs flags: 0x%08" PRIx32"%s\n" , |
| 1294 | mp->mnt_stat.f_mntonname, fs->fs_flags, |
| 1295 | (mp->mnt_flag & MNT_FORCE) ? "" : ", not mounting" ); |
| 1296 | if ((mp->mnt_flag & MNT_FORCE) == 0) { |
| 1297 | error = EINVAL; |
| 1298 | DPRINTF("no force %d" , error); |
| 1299 | goto out; |
| 1300 | } |
| 1301 | } |
| 1302 | |
| 1303 | if (fs->fs_pendingblocks != 0 || fs->fs_pendinginodes != 0) { |
| 1304 | fs->fs_pendingblocks = 0; |
| 1305 | fs->fs_pendinginodes = 0; |
| 1306 | } |
| 1307 | |
| 1308 | ump->um_fstype = fstype; |
| 1309 | if (fs->fs_sbsize < SBLOCKSIZE) |
| 1310 | brelse(bp, BC_INVAL); |
| 1311 | else |
| 1312 | brelse(bp, 0); |
| 1313 | bp = NULL; |
| 1314 | |
| 1315 | if (ffs_is_appleufs(devvp, fs)) { |
| 1316 | #ifdef APPLE_UFS |
| 1317 | ump->um_flags |= UFS_ISAPPLEUFS; |
| 1318 | #else |
| 1319 | DPRINTF("AppleUFS not supported" ); |
| 1320 | error = EINVAL; |
| 1321 | goto out; |
| 1322 | #endif |
| 1323 | } |
| 1324 | |
| 1325 | #if 0 |
| 1326 | /* |
| 1327 | * XXX This code changes the behaviour of mounting dirty filesystems, to |
| 1328 | * XXX require "mount -f ..." to mount them. This doesn't match what |
| 1329 | * XXX mount(8) describes and is disabled for now. |
| 1330 | */ |
| 1331 | /* |
| 1332 | * If the file system is not clean, don't allow it to be mounted |
| 1333 | * unless MNT_FORCE is specified. (Note: MNT_FORCE is always set |
| 1334 | * for the root file system.) |
| 1335 | */ |
| 1336 | if (fs->fs_flags & FS_DOWAPBL) { |
| 1337 | /* |
| 1338 | * wapbl normally expects to be FS_WASCLEAN when the FS_DOWAPBL |
| 1339 | * bit is set, although there's a window in unmount where it |
| 1340 | * could be FS_ISCLEAN |
| 1341 | */ |
| 1342 | if ((mp->mnt_flag & MNT_FORCE) == 0 && |
| 1343 | (fs->fs_clean & (FS_WASCLEAN | FS_ISCLEAN)) == 0) { |
| 1344 | error = EPERM; |
| 1345 | goto out; |
| 1346 | } |
| 1347 | } else |
| 1348 | if ((fs->fs_clean & FS_ISCLEAN) == 0 && |
| 1349 | (mp->mnt_flag & MNT_FORCE) == 0) { |
| 1350 | error = EPERM; |
| 1351 | goto out; |
| 1352 | } |
| 1353 | #endif |
| 1354 | |
| 1355 | /* |
| 1356 | * Verify that we can access the last block in the fs |
| 1357 | * if we're mounting read/write. |
| 1358 | */ |
| 1359 | if (!ronly) { |
| 1360 | error = bread(devvp, FFS_FSBTODB(fs, fs->fs_size - 1), |
| 1361 | fs->fs_fsize, 0, &bp); |
| 1362 | if (error) { |
| 1363 | DPRINTF("bread@0x%jx returned %d" , |
| 1364 | (intmax_t)FFS_FSBTODB(fs, fs->fs_size - 1), |
| 1365 | error); |
| 1366 | bset = BC_INVAL; |
| 1367 | goto out; |
| 1368 | } |
| 1369 | if (bp->b_bcount != fs->fs_fsize) { |
| 1370 | DPRINTF("bcount %x != fsize %x" , bp->b_bcount, |
| 1371 | fs->fs_fsize); |
| 1372 | error = EINVAL; |
| 1373 | bset = BC_INVAL; |
| 1374 | goto out; |
| 1375 | } |
| 1376 | brelse(bp, BC_INVAL); |
| 1377 | bp = NULL; |
| 1378 | } |
| 1379 | |
| 1380 | fs->fs_ronly = ronly; |
| 1381 | /* Don't bump fs_clean if we're replaying journal */ |
| 1382 | if (!((fs->fs_flags & FS_DOWAPBL) && (fs->fs_clean & FS_WASCLEAN))) { |
| 1383 | if (ronly == 0) { |
| 1384 | fs->fs_clean <<= 1; |
| 1385 | fs->fs_fmod = 1; |
| 1386 | } |
| 1387 | } |
| 1388 | |
| 1389 | bsize = fs->fs_cssize; |
| 1390 | blks = howmany(bsize, fs->fs_fsize); |
| 1391 | if (fs->fs_contigsumsize > 0) |
| 1392 | bsize += fs->fs_ncg * sizeof(int32_t); |
| 1393 | bsize += fs->fs_ncg * sizeof(*fs->fs_contigdirs); |
| 1394 | allocsbsize = bsize; |
| 1395 | space = kmem_alloc((u_long)allocsbsize, KM_SLEEP); |
| 1396 | fs->fs_csp = space; |
| 1397 | |
| 1398 | for (i = 0; i < blks; i += fs->fs_frag) { |
| 1399 | bsize = fs->fs_bsize; |
| 1400 | if (i + fs->fs_frag > blks) |
| 1401 | bsize = (blks - i) * fs->fs_fsize; |
| 1402 | error = bread(devvp, FFS_FSBTODB(fs, fs->fs_csaddr + i), bsize, |
| 1403 | 0, &bp); |
| 1404 | if (error) { |
| 1405 | DPRINTF("bread@0x%jx %d" , |
| 1406 | (intmax_t)FFS_FSBTODB(fs, fs->fs_csaddr + i), |
| 1407 | error); |
| 1408 | goto out1; |
| 1409 | } |
| 1410 | #ifdef FFS_EI |
| 1411 | if (needswap) |
| 1412 | ffs_csum_swap((struct csum *)bp->b_data, |
| 1413 | (struct csum *)space, bsize); |
| 1414 | else |
| 1415 | #endif |
| 1416 | memcpy(space, bp->b_data, (u_int)bsize); |
| 1417 | |
| 1418 | space = (char *)space + bsize; |
| 1419 | brelse(bp, 0); |
| 1420 | bp = NULL; |
| 1421 | } |
| 1422 | if (fs->fs_contigsumsize > 0) { |
| 1423 | fs->fs_maxcluster = lp = space; |
| 1424 | for (i = 0; i < fs->fs_ncg; i++) |
| 1425 | *lp++ = fs->fs_contigsumsize; |
| 1426 | space = lp; |
| 1427 | } |
| 1428 | bsize = fs->fs_ncg * sizeof(*fs->fs_contigdirs); |
| 1429 | fs->fs_contigdirs = space; |
| 1430 | space = (char *)space + bsize; |
| 1431 | memset(fs->fs_contigdirs, 0, bsize); |
| 1432 | |
| 1433 | /* Compatibility for old filesystems - XXX */ |
| 1434 | if (fs->fs_avgfilesize <= 0) |
| 1435 | fs->fs_avgfilesize = AVFILESIZ; |
| 1436 | if (fs->fs_avgfpdir <= 0) |
| 1437 | fs->fs_avgfpdir = AFPDIR; |
| 1438 | fs->fs_active = NULL; |
| 1439 | |
| 1440 | mp->mnt_data = ump; |
| 1441 | mp->mnt_stat.f_fsidx.__fsid_val[0] = (long)dev; |
| 1442 | mp->mnt_stat.f_fsidx.__fsid_val[1] = makefstype(MOUNT_FFS); |
| 1443 | mp->mnt_stat.f_fsid = mp->mnt_stat.f_fsidx.__fsid_val[0]; |
| 1444 | mp->mnt_stat.f_namemax = FFS_MAXNAMLEN; |
| 1445 | if (UFS_MPISAPPLEUFS(ump)) { |
| 1446 | /* NeXT used to keep short symlinks in the inode even |
| 1447 | * when using FS_42INODEFMT. In that case fs->fs_maxsymlinklen |
| 1448 | * is probably -1, but we still need to be able to identify |
| 1449 | * short symlinks. |
| 1450 | */ |
| 1451 | ump->um_maxsymlinklen = APPLEUFS_MAXSYMLINKLEN; |
| 1452 | ump->um_dirblksiz = APPLEUFS_DIRBLKSIZ; |
| 1453 | mp->mnt_iflag |= IMNT_DTYPE; |
| 1454 | } else { |
| 1455 | ump->um_maxsymlinklen = fs->fs_maxsymlinklen; |
| 1456 | ump->um_dirblksiz = UFS_DIRBLKSIZ; |
| 1457 | if (ump->um_maxsymlinklen > 0) |
| 1458 | mp->mnt_iflag |= IMNT_DTYPE; |
| 1459 | else |
| 1460 | mp->mnt_iflag &= ~IMNT_DTYPE; |
| 1461 | } |
| 1462 | mp->mnt_fs_bshift = fs->fs_bshift; |
| 1463 | mp->mnt_dev_bshift = DEV_BSHIFT; /* XXX */ |
| 1464 | mp->mnt_flag |= MNT_LOCAL; |
| 1465 | mp->mnt_iflag |= IMNT_MPSAFE; |
| 1466 | #ifdef FFS_EI |
| 1467 | if (needswap) |
| 1468 | ump->um_flags |= UFS_NEEDSWAP; |
| 1469 | #endif |
| 1470 | ump->um_mountp = mp; |
| 1471 | ump->um_dev = dev; |
| 1472 | ump->um_devvp = devvp; |
| 1473 | ump->um_nindir = fs->fs_nindir; |
| 1474 | ump->um_lognindir = ffs(fs->fs_nindir) - 1; |
| 1475 | ump->um_bptrtodb = fs->fs_fshift - DEV_BSHIFT; |
| 1476 | ump->um_seqinc = fs->fs_frag; |
| 1477 | for (i = 0; i < MAXQUOTAS; i++) |
| 1478 | ump->um_quotas[i] = NULLVP; |
| 1479 | spec_node_setmountedfs(devvp, mp); |
| 1480 | if (ronly == 0 && fs->fs_snapinum[0] != 0) |
| 1481 | ffs_snapshot_mount(mp); |
| 1482 | #ifdef WAPBL |
| 1483 | if (!ronly) { |
| 1484 | KDASSERT(fs->fs_ronly == 0); |
| 1485 | /* |
| 1486 | * ffs_wapbl_start() needs mp->mnt_stat initialised if it |
| 1487 | * needs to create a new log file in-filesystem. |
| 1488 | */ |
| 1489 | error = ffs_statvfs(mp, &mp->mnt_stat); |
| 1490 | if (error) { |
| 1491 | DPRINTF("ffs_statvfs returned %d" , error); |
| 1492 | goto out1; |
| 1493 | } |
| 1494 | |
| 1495 | error = ffs_wapbl_start(mp); |
| 1496 | if (error) { |
| 1497 | DPRINTF("ffs_wapbl_start returned %d" , error); |
| 1498 | goto out1; |
| 1499 | } |
| 1500 | } |
| 1501 | #endif /* WAPBL */ |
| 1502 | if (ronly == 0) { |
| 1503 | #ifdef QUOTA2 |
| 1504 | error = ffs_quota2_mount(mp); |
| 1505 | if (error) { |
| 1506 | DPRINTF("ffs_quota2_mount returned %d" , error); |
| 1507 | goto out1; |
| 1508 | } |
| 1509 | #else |
| 1510 | if (fs->fs_flags & FS_DOQUOTA2) { |
| 1511 | ump->um_flags |= UFS_QUOTA2; |
| 1512 | uprintf("%s: options QUOTA2 not enabled%s\n" , |
| 1513 | mp->mnt_stat.f_mntonname, |
| 1514 | (mp->mnt_flag & MNT_FORCE) ? "" : ", not mounting" ); |
| 1515 | if ((mp->mnt_flag & MNT_FORCE) == 0) { |
| 1516 | error = EINVAL; |
| 1517 | DPRINTF("quota disabled %d" , error); |
| 1518 | goto out1; |
| 1519 | } |
| 1520 | } |
| 1521 | #endif |
| 1522 | } |
| 1523 | |
| 1524 | if (mp->mnt_flag & MNT_DISCARD) |
| 1525 | ump->um_discarddata = ffs_discard_init(devvp, fs); |
| 1526 | |
| 1527 | return (0); |
| 1528 | out1: |
| 1529 | kmem_free(fs->fs_csp, allocsbsize); |
| 1530 | out: |
| 1531 | #ifdef WAPBL |
| 1532 | if (mp->mnt_wapbl_replay) { |
| 1533 | wapbl_replay_stop(mp->mnt_wapbl_replay); |
| 1534 | wapbl_replay_free(mp->mnt_wapbl_replay); |
| 1535 | mp->mnt_wapbl_replay = 0; |
| 1536 | } |
| 1537 | #endif |
| 1538 | |
| 1539 | fstrans_unmount(mp); |
| 1540 | if (fs) |
| 1541 | kmem_free(fs, fs->fs_sbsize); |
| 1542 | spec_node_setmountedfs(devvp, NULL); |
| 1543 | if (bp) |
| 1544 | brelse(bp, bset); |
| 1545 | if (ump) { |
| 1546 | if (ump->um_oldfscompat) |
| 1547 | kmem_free(ump->um_oldfscompat, 512 + 3*sizeof(int32_t)); |
| 1548 | mutex_destroy(&ump->um_lock); |
| 1549 | kmem_free(ump, sizeof(*ump)); |
| 1550 | mp->mnt_data = NULL; |
| 1551 | } |
| 1552 | return (error); |
| 1553 | } |
| 1554 | |
| 1555 | /* |
| 1556 | * Sanity checks for loading old filesystem superblocks. |
| 1557 | * See ffs_oldfscompat_write below for unwound actions. |
| 1558 | * |
| 1559 | * XXX - Parts get retired eventually. |
| 1560 | * Unfortunately new bits get added. |
| 1561 | */ |
| 1562 | static void |
| 1563 | ffs_oldfscompat_read(struct fs *fs, struct ufsmount *ump, daddr_t sblockloc) |
| 1564 | { |
| 1565 | off_t maxfilesize; |
| 1566 | int32_t *; |
| 1567 | |
| 1568 | if ((fs->fs_magic != FS_UFS1_MAGIC) || |
| 1569 | (fs->fs_old_flags & FS_FLAGS_UPDATED)) |
| 1570 | return; |
| 1571 | |
| 1572 | if (!ump->um_oldfscompat) |
| 1573 | ump->um_oldfscompat = kmem_alloc(512 + 3*sizeof(int32_t), |
| 1574 | KM_SLEEP); |
| 1575 | |
| 1576 | memcpy(ump->um_oldfscompat, &fs->fs_old_postbl_start, 512); |
| 1577 | extrasave = ump->um_oldfscompat; |
| 1578 | extrasave += 512/sizeof(int32_t); |
| 1579 | extrasave[0] = fs->fs_old_npsect; |
| 1580 | extrasave[1] = fs->fs_old_interleave; |
| 1581 | extrasave[2] = fs->fs_old_trackskew; |
| 1582 | |
| 1583 | /* These fields will be overwritten by their |
| 1584 | * original values in fs_oldfscompat_write, so it is harmless |
| 1585 | * to modify them here. |
| 1586 | */ |
| 1587 | fs->fs_cstotal.cs_ndir = fs->fs_old_cstotal.cs_ndir; |
| 1588 | fs->fs_cstotal.cs_nbfree = fs->fs_old_cstotal.cs_nbfree; |
| 1589 | fs->fs_cstotal.cs_nifree = fs->fs_old_cstotal.cs_nifree; |
| 1590 | fs->fs_cstotal.cs_nffree = fs->fs_old_cstotal.cs_nffree; |
| 1591 | |
| 1592 | fs->fs_maxbsize = fs->fs_bsize; |
| 1593 | fs->fs_time = fs->fs_old_time; |
| 1594 | fs->fs_size = fs->fs_old_size; |
| 1595 | fs->fs_dsize = fs->fs_old_dsize; |
| 1596 | fs->fs_csaddr = fs->fs_old_csaddr; |
| 1597 | fs->fs_sblockloc = sblockloc; |
| 1598 | |
| 1599 | fs->fs_flags = fs->fs_old_flags | (fs->fs_flags & FS_INTERNAL); |
| 1600 | |
| 1601 | if (fs->fs_old_postblformat == FS_42POSTBLFMT) { |
| 1602 | fs->fs_old_nrpos = 8; |
| 1603 | fs->fs_old_npsect = fs->fs_old_nsect; |
| 1604 | fs->fs_old_interleave = 1; |
| 1605 | fs->fs_old_trackskew = 0; |
| 1606 | } |
| 1607 | |
| 1608 | if (fs->fs_magic == FS_UFS1_MAGIC && |
| 1609 | fs->fs_old_inodefmt < FS_44INODEFMT) { |
| 1610 | fs->fs_maxfilesize = (u_quad_t) 1LL << 39; |
| 1611 | fs->fs_qbmask = ~fs->fs_bmask; |
| 1612 | fs->fs_qfmask = ~fs->fs_fmask; |
| 1613 | } |
| 1614 | |
| 1615 | maxfilesize = (u_int64_t)0x80000000 * fs->fs_bsize - 1; |
| 1616 | if (fs->fs_maxfilesize > maxfilesize) |
| 1617 | fs->fs_maxfilesize = maxfilesize; |
| 1618 | |
| 1619 | /* Compatibility for old filesystems */ |
| 1620 | if (fs->fs_avgfilesize <= 0) |
| 1621 | fs->fs_avgfilesize = AVFILESIZ; |
| 1622 | if (fs->fs_avgfpdir <= 0) |
| 1623 | fs->fs_avgfpdir = AFPDIR; |
| 1624 | |
| 1625 | #if 0 |
| 1626 | if (bigcgs) { |
| 1627 | fs->fs_save_cgsize = fs->fs_cgsize; |
| 1628 | fs->fs_cgsize = fs->fs_bsize; |
| 1629 | } |
| 1630 | #endif |
| 1631 | } |
| 1632 | |
| 1633 | /* |
| 1634 | * Unwinding superblock updates for old filesystems. |
| 1635 | * See ffs_oldfscompat_read above for details. |
| 1636 | * |
| 1637 | * XXX - Parts get retired eventually. |
| 1638 | * Unfortunately new bits get added. |
| 1639 | */ |
| 1640 | static void |
| 1641 | ffs_oldfscompat_write(struct fs *fs, struct ufsmount *ump) |
| 1642 | { |
| 1643 | int32_t *; |
| 1644 | |
| 1645 | if ((fs->fs_magic != FS_UFS1_MAGIC) || |
| 1646 | (fs->fs_old_flags & FS_FLAGS_UPDATED)) |
| 1647 | return; |
| 1648 | |
| 1649 | fs->fs_old_time = fs->fs_time; |
| 1650 | fs->fs_old_cstotal.cs_ndir = fs->fs_cstotal.cs_ndir; |
| 1651 | fs->fs_old_cstotal.cs_nbfree = fs->fs_cstotal.cs_nbfree; |
| 1652 | fs->fs_old_cstotal.cs_nifree = fs->fs_cstotal.cs_nifree; |
| 1653 | fs->fs_old_cstotal.cs_nffree = fs->fs_cstotal.cs_nffree; |
| 1654 | fs->fs_old_flags = fs->fs_flags; |
| 1655 | |
| 1656 | #if 0 |
| 1657 | if (bigcgs) { |
| 1658 | fs->fs_cgsize = fs->fs_save_cgsize; |
| 1659 | } |
| 1660 | #endif |
| 1661 | |
| 1662 | memcpy(&fs->fs_old_postbl_start, ump->um_oldfscompat, 512); |
| 1663 | extrasave = ump->um_oldfscompat; |
| 1664 | extrasave += 512/sizeof(int32_t); |
| 1665 | fs->fs_old_npsect = extrasave[0]; |
| 1666 | fs->fs_old_interleave = extrasave[1]; |
| 1667 | fs->fs_old_trackskew = extrasave[2]; |
| 1668 | |
| 1669 | } |
| 1670 | |
| 1671 | /* |
| 1672 | * unmount vfs operation |
| 1673 | */ |
| 1674 | int |
| 1675 | ffs_unmount(struct mount *mp, int mntflags) |
| 1676 | { |
| 1677 | struct lwp *l = curlwp; |
| 1678 | struct ufsmount *ump = VFSTOUFS(mp); |
| 1679 | struct fs *fs = ump->um_fs; |
| 1680 | int error, flags; |
| 1681 | u_int32_t bsize; |
| 1682 | #ifdef WAPBL |
| 1683 | extern int doforce; |
| 1684 | #endif |
| 1685 | |
| 1686 | if (ump->um_discarddata) { |
| 1687 | ffs_discard_finish(ump->um_discarddata, mntflags); |
| 1688 | ump->um_discarddata = NULL; |
| 1689 | } |
| 1690 | |
| 1691 | flags = 0; |
| 1692 | if (mntflags & MNT_FORCE) |
| 1693 | flags |= FORCECLOSE; |
| 1694 | if ((error = ffs_flushfiles(mp, flags, l)) != 0) |
| 1695 | return (error); |
| 1696 | error = UFS_WAPBL_BEGIN(mp); |
| 1697 | if (error == 0) |
| 1698 | if (fs->fs_ronly == 0 && |
| 1699 | ffs_cgupdate(ump, MNT_WAIT) == 0 && |
| 1700 | fs->fs_clean & FS_WASCLEAN) { |
| 1701 | fs->fs_clean = FS_ISCLEAN; |
| 1702 | fs->fs_fmod = 0; |
| 1703 | (void) ffs_sbupdate(ump, MNT_WAIT); |
| 1704 | } |
| 1705 | if (error == 0) |
| 1706 | UFS_WAPBL_END(mp); |
| 1707 | #ifdef WAPBL |
| 1708 | KASSERT(!(mp->mnt_wapbl_replay && mp->mnt_wapbl)); |
| 1709 | if (mp->mnt_wapbl_replay) { |
| 1710 | KDASSERT(fs->fs_ronly); |
| 1711 | wapbl_replay_stop(mp->mnt_wapbl_replay); |
| 1712 | wapbl_replay_free(mp->mnt_wapbl_replay); |
| 1713 | mp->mnt_wapbl_replay = 0; |
| 1714 | } |
| 1715 | error = ffs_wapbl_stop(mp, doforce && (mntflags & MNT_FORCE)); |
| 1716 | if (error) { |
| 1717 | return error; |
| 1718 | } |
| 1719 | #endif /* WAPBL */ |
| 1720 | |
| 1721 | if (ump->um_devvp->v_type != VBAD) |
| 1722 | spec_node_setmountedfs(ump->um_devvp, NULL); |
| 1723 | vn_lock(ump->um_devvp, LK_EXCLUSIVE | LK_RETRY); |
| 1724 | (void)VOP_CLOSE(ump->um_devvp, fs->fs_ronly ? FREAD : FREAD | FWRITE, |
| 1725 | NOCRED); |
| 1726 | vput(ump->um_devvp); |
| 1727 | |
| 1728 | bsize = fs->fs_cssize; |
| 1729 | if (fs->fs_contigsumsize > 0) |
| 1730 | bsize += fs->fs_ncg * sizeof(int32_t); |
| 1731 | bsize += fs->fs_ncg * sizeof(*fs->fs_contigdirs); |
| 1732 | kmem_free(fs->fs_csp, bsize); |
| 1733 | |
| 1734 | kmem_free(fs, fs->fs_sbsize); |
| 1735 | if (ump->um_oldfscompat != NULL) |
| 1736 | kmem_free(ump->um_oldfscompat, 512 + 3*sizeof(int32_t)); |
| 1737 | mutex_destroy(&ump->um_lock); |
| 1738 | ffs_snapshot_fini(ump); |
| 1739 | kmem_free(ump, sizeof(*ump)); |
| 1740 | mp->mnt_data = NULL; |
| 1741 | mp->mnt_flag &= ~MNT_LOCAL; |
| 1742 | fstrans_unmount(mp); |
| 1743 | return (0); |
| 1744 | } |
| 1745 | |
| 1746 | /* |
| 1747 | * Flush out all the files in a filesystem. |
| 1748 | */ |
| 1749 | int |
| 1750 | ffs_flushfiles(struct mount *mp, int flags, struct lwp *l) |
| 1751 | { |
| 1752 | extern int doforce; |
| 1753 | struct ufsmount *ump; |
| 1754 | int error; |
| 1755 | |
| 1756 | if (!doforce) |
| 1757 | flags &= ~FORCECLOSE; |
| 1758 | ump = VFSTOUFS(mp); |
| 1759 | #ifdef QUOTA |
| 1760 | if ((error = quota1_umount(mp, flags)) != 0) |
| 1761 | return (error); |
| 1762 | #endif |
| 1763 | #ifdef QUOTA2 |
| 1764 | if ((error = quota2_umount(mp, flags)) != 0) |
| 1765 | return (error); |
| 1766 | #endif |
| 1767 | #ifdef UFS_EXTATTR |
| 1768 | if (ump->um_fstype == UFS1) { |
| 1769 | if (ump->um_extattr.uepm_flags & UFS_EXTATTR_UEPM_STARTED) |
| 1770 | ufs_extattr_stop(mp, l); |
| 1771 | if (ump->um_extattr.uepm_flags & UFS_EXTATTR_UEPM_INITIALIZED) |
| 1772 | ufs_extattr_uepm_destroy(&ump->um_extattr); |
| 1773 | mp->mnt_flag &= ~MNT_EXTATTR; |
| 1774 | } |
| 1775 | #endif |
| 1776 | if ((error = vflush(mp, 0, SKIPSYSTEM | flags)) != 0) |
| 1777 | return (error); |
| 1778 | ffs_snapshot_unmount(mp); |
| 1779 | /* |
| 1780 | * Flush all the files. |
| 1781 | */ |
| 1782 | error = vflush(mp, NULLVP, flags); |
| 1783 | if (error) |
| 1784 | return (error); |
| 1785 | /* |
| 1786 | * Flush filesystem metadata. |
| 1787 | */ |
| 1788 | vn_lock(ump->um_devvp, LK_EXCLUSIVE | LK_RETRY); |
| 1789 | error = VOP_FSYNC(ump->um_devvp, l->l_cred, FSYNC_WAIT, 0, 0); |
| 1790 | VOP_UNLOCK(ump->um_devvp); |
| 1791 | if (flags & FORCECLOSE) /* XXXDBJ */ |
| 1792 | error = 0; |
| 1793 | |
| 1794 | #ifdef WAPBL |
| 1795 | if (error) |
| 1796 | return error; |
| 1797 | if (mp->mnt_wapbl) { |
| 1798 | error = wapbl_flush(mp->mnt_wapbl, 1); |
| 1799 | if (flags & FORCECLOSE) |
| 1800 | error = 0; |
| 1801 | } |
| 1802 | #endif |
| 1803 | |
| 1804 | return (error); |
| 1805 | } |
| 1806 | |
| 1807 | /* |
| 1808 | * Get file system statistics. |
| 1809 | */ |
| 1810 | int |
| 1811 | ffs_statvfs(struct mount *mp, struct statvfs *sbp) |
| 1812 | { |
| 1813 | struct ufsmount *ump; |
| 1814 | struct fs *fs; |
| 1815 | |
| 1816 | ump = VFSTOUFS(mp); |
| 1817 | fs = ump->um_fs; |
| 1818 | mutex_enter(&ump->um_lock); |
| 1819 | sbp->f_bsize = fs->fs_bsize; |
| 1820 | sbp->f_frsize = fs->fs_fsize; |
| 1821 | sbp->f_iosize = fs->fs_bsize; |
| 1822 | sbp->f_blocks = fs->fs_dsize; |
| 1823 | sbp->f_bfree = ffs_blkstofrags(fs, fs->fs_cstotal.cs_nbfree) + |
| 1824 | fs->fs_cstotal.cs_nffree + FFS_DBTOFSB(fs, fs->fs_pendingblocks); |
| 1825 | sbp->f_bresvd = ((u_int64_t) fs->fs_dsize * (u_int64_t) |
| 1826 | fs->fs_minfree) / (u_int64_t) 100; |
| 1827 | if (sbp->f_bfree > sbp->f_bresvd) |
| 1828 | sbp->f_bavail = sbp->f_bfree - sbp->f_bresvd; |
| 1829 | else |
| 1830 | sbp->f_bavail = 0; |
| 1831 | sbp->f_files = fs->fs_ncg * fs->fs_ipg - UFS_ROOTINO; |
| 1832 | sbp->f_ffree = fs->fs_cstotal.cs_nifree + fs->fs_pendinginodes; |
| 1833 | sbp->f_favail = sbp->f_ffree; |
| 1834 | sbp->f_fresvd = 0; |
| 1835 | mutex_exit(&ump->um_lock); |
| 1836 | copy_statvfs_info(sbp, mp); |
| 1837 | |
| 1838 | return (0); |
| 1839 | } |
| 1840 | |
| 1841 | struct ffs_sync_ctx { |
| 1842 | int waitfor; |
| 1843 | bool is_suspending; |
| 1844 | }; |
| 1845 | |
| 1846 | static bool |
| 1847 | ffs_sync_selector(void *cl, struct vnode *vp) |
| 1848 | { |
| 1849 | struct ffs_sync_ctx *c = cl; |
| 1850 | struct inode *ip; |
| 1851 | |
| 1852 | ip = VTOI(vp); |
| 1853 | /* |
| 1854 | * Skip the vnode/inode if inaccessible. |
| 1855 | */ |
| 1856 | if (ip == NULL || vp->v_type == VNON) |
| 1857 | return false; |
| 1858 | |
| 1859 | /* |
| 1860 | * We deliberately update inode times here. This will |
| 1861 | * prevent a massive queue of updates accumulating, only |
| 1862 | * to be handled by a call to unmount. |
| 1863 | * |
| 1864 | * XXX It would be better to have the syncer trickle these |
| 1865 | * out. Adjustment needed to allow registering vnodes for |
| 1866 | * sync when the vnode is clean, but the inode dirty. Or |
| 1867 | * have ufs itself trickle out inode updates. |
| 1868 | * |
| 1869 | * If doing a lazy sync, we don't care about metadata or |
| 1870 | * data updates, because they are handled by each vnode's |
| 1871 | * synclist entry. In this case we are only interested in |
| 1872 | * writing back modified inodes. |
| 1873 | */ |
| 1874 | if ((ip->i_flag & (IN_ACCESS | IN_CHANGE | IN_UPDATE | |
| 1875 | IN_MODIFY | IN_MODIFIED | IN_ACCESSED)) == 0 && |
| 1876 | (c->waitfor == MNT_LAZY || (LIST_EMPTY(&vp->v_dirtyblkhd) && |
| 1877 | UVM_OBJ_IS_CLEAN(&vp->v_uobj)))) |
| 1878 | return false; |
| 1879 | |
| 1880 | if (vp->v_type == VBLK && c->is_suspending) |
| 1881 | return false; |
| 1882 | |
| 1883 | return true; |
| 1884 | } |
| 1885 | |
| 1886 | /* |
| 1887 | * Go through the disk queues to initiate sandbagged IO; |
| 1888 | * go through the inodes to write those that have been modified; |
| 1889 | * initiate the writing of the super block if it has been modified. |
| 1890 | * |
| 1891 | * Note: we are always called with the filesystem marked `MPBUSY'. |
| 1892 | */ |
| 1893 | int |
| 1894 | ffs_sync(struct mount *mp, int waitfor, kauth_cred_t cred) |
| 1895 | { |
| 1896 | struct vnode *vp; |
| 1897 | struct ufsmount *ump = VFSTOUFS(mp); |
| 1898 | struct fs *fs; |
| 1899 | struct vnode_iterator *marker; |
| 1900 | int error, allerror = 0; |
| 1901 | bool is_suspending; |
| 1902 | struct ffs_sync_ctx ctx; |
| 1903 | |
| 1904 | fs = ump->um_fs; |
| 1905 | if (fs->fs_fmod != 0 && fs->fs_ronly != 0) { /* XXX */ |
| 1906 | panic("%s: rofs mod, fs=%s" , __func__, fs->fs_fsmnt); |
| 1907 | } |
| 1908 | |
| 1909 | fstrans_start(mp, FSTRANS_SHARED); |
| 1910 | is_suspending = (fstrans_getstate(mp) == FSTRANS_SUSPENDING); |
| 1911 | /* |
| 1912 | * Write back each (modified) inode. |
| 1913 | */ |
| 1914 | vfs_vnode_iterator_init(mp, &marker); |
| 1915 | |
| 1916 | ctx.waitfor = waitfor; |
| 1917 | ctx.is_suspending = is_suspending; |
| 1918 | while ((vp = vfs_vnode_iterator_next(marker, ffs_sync_selector, &ctx))) |
| 1919 | { |
| 1920 | error = vn_lock(vp, LK_EXCLUSIVE); |
| 1921 | if (error) { |
| 1922 | vrele(vp); |
| 1923 | continue; |
| 1924 | } |
| 1925 | if (waitfor == MNT_LAZY) { |
| 1926 | error = UFS_WAPBL_BEGIN(vp->v_mount); |
| 1927 | if (!error) { |
| 1928 | error = ffs_update(vp, NULL, NULL, |
| 1929 | UPDATE_CLOSE); |
| 1930 | UFS_WAPBL_END(vp->v_mount); |
| 1931 | } |
| 1932 | } else { |
| 1933 | error = VOP_FSYNC(vp, cred, FSYNC_NOLOG | |
| 1934 | (waitfor == MNT_WAIT ? FSYNC_WAIT : 0), 0, 0); |
| 1935 | } |
| 1936 | if (error) |
| 1937 | allerror = error; |
| 1938 | vput(vp); |
| 1939 | } |
| 1940 | vfs_vnode_iterator_destroy(marker); |
| 1941 | |
| 1942 | /* |
| 1943 | * Force stale file system control information to be flushed. |
| 1944 | */ |
| 1945 | if (waitfor != MNT_LAZY && (ump->um_devvp->v_numoutput > 0 || |
| 1946 | !LIST_EMPTY(&ump->um_devvp->v_dirtyblkhd))) { |
| 1947 | vn_lock(ump->um_devvp, LK_EXCLUSIVE | LK_RETRY); |
| 1948 | if ((error = VOP_FSYNC(ump->um_devvp, cred, |
| 1949 | (waitfor == MNT_WAIT ? FSYNC_WAIT : 0) | FSYNC_NOLOG, |
| 1950 | 0, 0)) != 0) |
| 1951 | allerror = error; |
| 1952 | VOP_UNLOCK(ump->um_devvp); |
| 1953 | } |
| 1954 | #if defined(QUOTA) || defined(QUOTA2) |
| 1955 | qsync(mp); |
| 1956 | #endif |
| 1957 | /* |
| 1958 | * Write back modified superblock. |
| 1959 | */ |
| 1960 | if (fs->fs_fmod != 0) { |
| 1961 | fs->fs_fmod = 0; |
| 1962 | fs->fs_time = time_second; |
| 1963 | error = UFS_WAPBL_BEGIN(mp); |
| 1964 | if (error) |
| 1965 | allerror = error; |
| 1966 | else { |
| 1967 | if ((error = ffs_cgupdate(ump, waitfor))) |
| 1968 | allerror = error; |
| 1969 | UFS_WAPBL_END(mp); |
| 1970 | } |
| 1971 | } |
| 1972 | |
| 1973 | #ifdef WAPBL |
| 1974 | if (mp->mnt_wapbl) { |
| 1975 | error = wapbl_flush(mp->mnt_wapbl, 0); |
| 1976 | if (error) |
| 1977 | allerror = error; |
| 1978 | } |
| 1979 | #endif |
| 1980 | |
| 1981 | fstrans_done(mp); |
| 1982 | return (allerror); |
| 1983 | } |
| 1984 | |
| 1985 | /* |
| 1986 | * Load inode from disk and initialize vnode. |
| 1987 | */ |
| 1988 | static int |
| 1989 | ffs_init_vnode(struct ufsmount *ump, struct vnode *vp, ino_t ino) |
| 1990 | { |
| 1991 | struct fs *fs; |
| 1992 | struct inode *ip; |
| 1993 | struct buf *bp; |
| 1994 | int error; |
| 1995 | |
| 1996 | fs = ump->um_fs; |
| 1997 | |
| 1998 | /* Read in the disk contents for the inode. */ |
| 1999 | error = bread(ump->um_devvp, FFS_FSBTODB(fs, ino_to_fsba(fs, ino)), |
| 2000 | (int)fs->fs_bsize, 0, &bp); |
| 2001 | if (error) |
| 2002 | return error; |
| 2003 | |
| 2004 | /* Allocate and initialize inode. */ |
| 2005 | ip = pool_cache_get(ffs_inode_cache, PR_WAITOK); |
| 2006 | memset(ip, 0, sizeof(struct inode)); |
| 2007 | ip->i_ump = ump; |
| 2008 | ip->i_fs = fs; |
| 2009 | ip->i_dev = ump->um_dev; |
| 2010 | ip->i_number = ino; |
| 2011 | if (ump->um_fstype == UFS1) |
| 2012 | ip->i_din.ffs1_din = pool_cache_get(ffs_dinode1_cache, |
| 2013 | PR_WAITOK); |
| 2014 | else |
| 2015 | ip->i_din.ffs2_din = pool_cache_get(ffs_dinode2_cache, |
| 2016 | PR_WAITOK); |
| 2017 | ffs_load_inode(bp, ip, fs, ino); |
| 2018 | brelse(bp, 0); |
| 2019 | ip->i_vnode = vp; |
| 2020 | #if defined(QUOTA) || defined(QUOTA2) |
| 2021 | ufsquota_init(ip); |
| 2022 | #endif |
| 2023 | |
| 2024 | /* Initialise vnode with this inode. */ |
| 2025 | vp->v_tag = VT_UFS; |
| 2026 | vp->v_op = ffs_vnodeop_p; |
| 2027 | vp->v_vflag |= VV_LOCKSWORK; |
| 2028 | vp->v_data = ip; |
| 2029 | |
| 2030 | /* Initialize genfs node. */ |
| 2031 | genfs_node_init(vp, &ffs_genfsops); |
| 2032 | |
| 2033 | return 0; |
| 2034 | } |
| 2035 | |
| 2036 | /* |
| 2037 | * Undo ffs_init_vnode(). |
| 2038 | */ |
| 2039 | static void |
| 2040 | ffs_deinit_vnode(struct ufsmount *ump, struct vnode *vp) |
| 2041 | { |
| 2042 | struct inode *ip = VTOI(vp); |
| 2043 | |
| 2044 | if (ump->um_fstype == UFS1) |
| 2045 | pool_cache_put(ffs_dinode1_cache, ip->i_din.ffs1_din); |
| 2046 | else |
| 2047 | pool_cache_put(ffs_dinode2_cache, ip->i_din.ffs2_din); |
| 2048 | pool_cache_put(ffs_inode_cache, ip); |
| 2049 | |
| 2050 | genfs_node_destroy(vp); |
| 2051 | vp->v_data = NULL; |
| 2052 | } |
| 2053 | |
| 2054 | /* |
| 2055 | * Read an inode from disk and initialize this vnode / inode pair. |
| 2056 | * Caller assures no other thread will try to load this inode. |
| 2057 | */ |
| 2058 | int |
| 2059 | ffs_loadvnode(struct mount *mp, struct vnode *vp, |
| 2060 | const void *key, size_t key_len, const void **new_key) |
| 2061 | { |
| 2062 | ino_t ino; |
| 2063 | struct fs *fs; |
| 2064 | struct inode *ip; |
| 2065 | struct ufsmount *ump; |
| 2066 | int error; |
| 2067 | |
| 2068 | KASSERT(key_len == sizeof(ino)); |
| 2069 | memcpy(&ino, key, key_len); |
| 2070 | ump = VFSTOUFS(mp); |
| 2071 | fs = ump->um_fs; |
| 2072 | |
| 2073 | error = ffs_init_vnode(ump, vp, ino); |
| 2074 | if (error) |
| 2075 | return error; |
| 2076 | |
| 2077 | ip = VTOI(vp); |
| 2078 | if (ip->i_mode == 0) { |
| 2079 | ffs_deinit_vnode(ump, vp); |
| 2080 | |
| 2081 | return ENOENT; |
| 2082 | } |
| 2083 | |
| 2084 | /* Initialize the vnode from the inode. */ |
| 2085 | ufs_vinit(mp, ffs_specop_p, ffs_fifoop_p, &vp); |
| 2086 | |
| 2087 | /* Finish inode initialization. */ |
| 2088 | ip->i_devvp = ump->um_devvp; |
| 2089 | vref(ip->i_devvp); |
| 2090 | |
| 2091 | /* |
| 2092 | * Ensure that uid and gid are correct. This is a temporary |
| 2093 | * fix until fsck has been changed to do the update. |
| 2094 | */ |
| 2095 | |
| 2096 | if (fs->fs_magic == FS_UFS1_MAGIC && /* XXX */ |
| 2097 | fs->fs_old_inodefmt < FS_44INODEFMT) { /* XXX */ |
| 2098 | ip->i_uid = ip->i_ffs1_ouid; /* XXX */ |
| 2099 | ip->i_gid = ip->i_ffs1_ogid; /* XXX */ |
| 2100 | } /* XXX */ |
| 2101 | uvm_vnp_setsize(vp, ip->i_size); |
| 2102 | *new_key = &ip->i_number; |
| 2103 | return 0; |
| 2104 | } |
| 2105 | |
| 2106 | /* |
| 2107 | * Create a new inode on disk and initialize this vnode / inode pair. |
| 2108 | */ |
| 2109 | int |
| 2110 | ffs_newvnode(struct mount *mp, struct vnode *dvp, struct vnode *vp, |
| 2111 | struct vattr *vap, kauth_cred_t cred, |
| 2112 | size_t *key_len, const void **new_key) |
| 2113 | { |
| 2114 | ino_t ino; |
| 2115 | struct fs *fs; |
| 2116 | struct inode *ip; |
| 2117 | struct timespec ts; |
| 2118 | struct ufsmount *ump; |
| 2119 | int error, mode; |
| 2120 | |
| 2121 | KASSERT(dvp->v_mount == mp); |
| 2122 | KASSERT(vap->va_type != VNON); |
| 2123 | |
| 2124 | *key_len = sizeof(ino); |
| 2125 | ump = VFSTOUFS(mp); |
| 2126 | fs = ump->um_fs; |
| 2127 | mode = MAKEIMODE(vap->va_type, vap->va_mode); |
| 2128 | |
| 2129 | /* Allocate fresh inode. */ |
| 2130 | error = ffs_valloc(dvp, mode, cred, &ino); |
| 2131 | if (error) |
| 2132 | return error; |
| 2133 | |
| 2134 | /* Attach inode to vnode. */ |
| 2135 | error = ffs_init_vnode(ump, vp, ino); |
| 2136 | if (error) { |
| 2137 | if (UFS_WAPBL_BEGIN(mp) == 0) { |
| 2138 | ffs_vfree(dvp, ino, mode); |
| 2139 | UFS_WAPBL_END(mp); |
| 2140 | } |
| 2141 | return error; |
| 2142 | } |
| 2143 | |
| 2144 | ip = VTOI(vp); |
| 2145 | if (ip->i_mode) { |
| 2146 | panic("%s: dup alloc ino=%" PRId64 " on %s: mode %x/%x " |
| 2147 | "gen %x/%x size %" PRIx64 " blocks %" PRIx64, |
| 2148 | __func__, ino, fs->fs_fsmnt, DIP(ip, mode), ip->i_mode, |
| 2149 | DIP(ip, gen), ip->i_gen, DIP(ip, size), DIP(ip, blocks)); |
| 2150 | } |
| 2151 | if (DIP(ip, size) || DIP(ip, blocks)) { |
| 2152 | printf("%s: ino=%" PRId64 " on %s: " |
| 2153 | "gen %x/%x has non zero blocks %" PRIx64 " or size %" |
| 2154 | PRIx64 "\n" , |
| 2155 | __func__, ino, fs->fs_fsmnt, DIP(ip, gen), ip->i_gen, |
| 2156 | DIP(ip, blocks), DIP(ip, size)); |
| 2157 | if ((ip)->i_ump->um_fstype == UFS1) |
| 2158 | panic("%s: dirty filesystem?" , __func__); |
| 2159 | DIP_ASSIGN(ip, blocks, 0); |
| 2160 | DIP_ASSIGN(ip, size, 0); |
| 2161 | } |
| 2162 | |
| 2163 | /* Set uid / gid. */ |
| 2164 | if (cred == NOCRED || cred == FSCRED) { |
| 2165 | ip->i_gid = 0; |
| 2166 | ip->i_uid = 0; |
| 2167 | } else { |
| 2168 | ip->i_gid = VTOI(dvp)->i_gid; |
| 2169 | ip->i_uid = kauth_cred_geteuid(cred); |
| 2170 | } |
| 2171 | DIP_ASSIGN(ip, gid, ip->i_gid); |
| 2172 | DIP_ASSIGN(ip, uid, ip->i_uid); |
| 2173 | |
| 2174 | #if defined(QUOTA) || defined(QUOTA2) |
| 2175 | error = UFS_WAPBL_BEGIN(mp); |
| 2176 | if (error) { |
| 2177 | ffs_deinit_vnode(ump, vp); |
| 2178 | |
| 2179 | return error; |
| 2180 | } |
| 2181 | error = chkiq(ip, 1, cred, 0); |
| 2182 | if (error) { |
| 2183 | ffs_vfree(dvp, ino, mode); |
| 2184 | UFS_WAPBL_END(mp); |
| 2185 | ffs_deinit_vnode(ump, vp); |
| 2186 | |
| 2187 | return error; |
| 2188 | } |
| 2189 | UFS_WAPBL_END(mp); |
| 2190 | #endif |
| 2191 | |
| 2192 | /* Set type and finalize. */ |
| 2193 | ip->i_flags = 0; |
| 2194 | DIP_ASSIGN(ip, flags, 0); |
| 2195 | ip->i_mode = mode; |
| 2196 | DIP_ASSIGN(ip, mode, mode); |
| 2197 | if (vap->va_rdev != VNOVAL) { |
| 2198 | /* |
| 2199 | * Want to be able to use this to make badblock |
| 2200 | * inodes, so don't truncate the dev number. |
| 2201 | */ |
| 2202 | if (ump->um_fstype == UFS1) |
| 2203 | ip->i_ffs1_rdev = ufs_rw32(vap->va_rdev, |
| 2204 | UFS_MPNEEDSWAP(ump)); |
| 2205 | else |
| 2206 | ip->i_ffs2_rdev = ufs_rw64(vap->va_rdev, |
| 2207 | UFS_MPNEEDSWAP(ump)); |
| 2208 | } |
| 2209 | ufs_vinit(mp, ffs_specop_p, ffs_fifoop_p, &vp); |
| 2210 | ip->i_devvp = ump->um_devvp; |
| 2211 | vref(ip->i_devvp); |
| 2212 | |
| 2213 | /* Set up a new generation number for this inode. */ |
| 2214 | ip->i_gen++; |
| 2215 | DIP_ASSIGN(ip, gen, ip->i_gen); |
| 2216 | if (fs->fs_magic == FS_UFS2_MAGIC) { |
| 2217 | vfs_timestamp(&ts); |
| 2218 | ip->i_ffs2_birthtime = ts.tv_sec; |
| 2219 | ip->i_ffs2_birthnsec = ts.tv_nsec; |
| 2220 | } |
| 2221 | |
| 2222 | uvm_vnp_setsize(vp, ip->i_size); |
| 2223 | *new_key = &ip->i_number; |
| 2224 | return 0; |
| 2225 | } |
| 2226 | |
| 2227 | /* |
| 2228 | * File handle to vnode |
| 2229 | * |
| 2230 | * Have to be really careful about stale file handles: |
| 2231 | * - check that the inode number is valid |
| 2232 | * - call ffs_vget() to get the locked inode |
| 2233 | * - check for an unallocated inode (i_mode == 0) |
| 2234 | * - check that the given client host has export rights and return |
| 2235 | * those rights via. exflagsp and credanonp |
| 2236 | */ |
| 2237 | int |
| 2238 | ffs_fhtovp(struct mount *mp, struct fid *fhp, struct vnode **vpp) |
| 2239 | { |
| 2240 | struct ufid ufh; |
| 2241 | int error; |
| 2242 | |
| 2243 | if (fhp->fid_len != sizeof(struct ufid)) |
| 2244 | return EINVAL; |
| 2245 | |
| 2246 | memcpy(&ufh, fhp, sizeof(ufh)); |
| 2247 | if ((error = ffs_checkrange(mp, ufh.ufid_ino)) != 0) |
| 2248 | return error; |
| 2249 | |
| 2250 | return (ufs_fhtovp(mp, &ufh, vpp)); |
| 2251 | } |
| 2252 | |
| 2253 | /* |
| 2254 | * Vnode pointer to File handle |
| 2255 | */ |
| 2256 | /* ARGSUSED */ |
| 2257 | int |
| 2258 | ffs_vptofh(struct vnode *vp, struct fid *fhp, size_t *fh_size) |
| 2259 | { |
| 2260 | struct inode *ip; |
| 2261 | struct ufid ufh; |
| 2262 | |
| 2263 | if (*fh_size < sizeof(struct ufid)) { |
| 2264 | *fh_size = sizeof(struct ufid); |
| 2265 | return E2BIG; |
| 2266 | } |
| 2267 | ip = VTOI(vp); |
| 2268 | *fh_size = sizeof(struct ufid); |
| 2269 | memset(&ufh, 0, sizeof(ufh)); |
| 2270 | ufh.ufid_len = sizeof(struct ufid); |
| 2271 | ufh.ufid_ino = ip->i_number; |
| 2272 | ufh.ufid_gen = ip->i_gen; |
| 2273 | memcpy(fhp, &ufh, sizeof(ufh)); |
| 2274 | return (0); |
| 2275 | } |
| 2276 | |
| 2277 | void |
| 2278 | ffs_init(void) |
| 2279 | { |
| 2280 | if (ffs_initcount++ > 0) |
| 2281 | return; |
| 2282 | |
| 2283 | ffs_inode_cache = pool_cache_init(sizeof(struct inode), 0, 0, 0, |
| 2284 | "ffsino" , NULL, IPL_NONE, NULL, NULL, NULL); |
| 2285 | ffs_dinode1_cache = pool_cache_init(sizeof(struct ufs1_dinode), 0, 0, 0, |
| 2286 | "ffsdino1" , NULL, IPL_NONE, NULL, NULL, NULL); |
| 2287 | ffs_dinode2_cache = pool_cache_init(sizeof(struct ufs2_dinode), 0, 0, 0, |
| 2288 | "ffsdino2" , NULL, IPL_NONE, NULL, NULL, NULL); |
| 2289 | ufs_init(); |
| 2290 | } |
| 2291 | |
| 2292 | void |
| 2293 | ffs_reinit(void) |
| 2294 | { |
| 2295 | ufs_reinit(); |
| 2296 | } |
| 2297 | |
| 2298 | void |
| 2299 | ffs_done(void) |
| 2300 | { |
| 2301 | if (--ffs_initcount > 0) |
| 2302 | return; |
| 2303 | |
| 2304 | ufs_done(); |
| 2305 | pool_cache_destroy(ffs_dinode2_cache); |
| 2306 | pool_cache_destroy(ffs_dinode1_cache); |
| 2307 | pool_cache_destroy(ffs_inode_cache); |
| 2308 | } |
| 2309 | |
| 2310 | /* |
| 2311 | * Write a superblock and associated information back to disk. |
| 2312 | */ |
| 2313 | int |
| 2314 | ffs_sbupdate(struct ufsmount *mp, int waitfor) |
| 2315 | { |
| 2316 | struct fs *fs = mp->um_fs; |
| 2317 | struct buf *bp; |
| 2318 | int error; |
| 2319 | u_int32_t saveflag; |
| 2320 | |
| 2321 | error = ffs_getblk(mp->um_devvp, |
| 2322 | fs->fs_sblockloc / DEV_BSIZE, FFS_NOBLK, |
| 2323 | fs->fs_sbsize, false, &bp); |
| 2324 | if (error) |
| 2325 | return error; |
| 2326 | saveflag = fs->fs_flags & FS_INTERNAL; |
| 2327 | fs->fs_flags &= ~FS_INTERNAL; |
| 2328 | |
| 2329 | memcpy(bp->b_data, fs, fs->fs_sbsize); |
| 2330 | |
| 2331 | ffs_oldfscompat_write((struct fs *)bp->b_data, mp); |
| 2332 | #ifdef FFS_EI |
| 2333 | if (mp->um_flags & UFS_NEEDSWAP) |
| 2334 | ffs_sb_swap((struct fs *)bp->b_data, (struct fs *)bp->b_data); |
| 2335 | #endif |
| 2336 | fs->fs_flags |= saveflag; |
| 2337 | |
| 2338 | if (waitfor == MNT_WAIT) |
| 2339 | error = bwrite(bp); |
| 2340 | else |
| 2341 | bawrite(bp); |
| 2342 | return (error); |
| 2343 | } |
| 2344 | |
| 2345 | int |
| 2346 | ffs_cgupdate(struct ufsmount *mp, int waitfor) |
| 2347 | { |
| 2348 | struct fs *fs = mp->um_fs; |
| 2349 | struct buf *bp; |
| 2350 | int blks; |
| 2351 | void *space; |
| 2352 | int i, size, error = 0, allerror = 0; |
| 2353 | |
| 2354 | UFS_WAPBL_JLOCK_ASSERT(mp); |
| 2355 | |
| 2356 | allerror = ffs_sbupdate(mp, waitfor); |
| 2357 | blks = howmany(fs->fs_cssize, fs->fs_fsize); |
| 2358 | space = fs->fs_csp; |
| 2359 | for (i = 0; i < blks; i += fs->fs_frag) { |
| 2360 | size = fs->fs_bsize; |
| 2361 | if (i + fs->fs_frag > blks) |
| 2362 | size = (blks - i) * fs->fs_fsize; |
| 2363 | error = ffs_getblk(mp->um_devvp, FFS_FSBTODB(fs, fs->fs_csaddr + i), |
| 2364 | FFS_NOBLK, size, false, &bp); |
| 2365 | if (error) |
| 2366 | break; |
| 2367 | #ifdef FFS_EI |
| 2368 | if (mp->um_flags & UFS_NEEDSWAP) |
| 2369 | ffs_csum_swap((struct csum*)space, |
| 2370 | (struct csum*)bp->b_data, size); |
| 2371 | else |
| 2372 | #endif |
| 2373 | memcpy(bp->b_data, space, (u_int)size); |
| 2374 | space = (char *)space + size; |
| 2375 | if (waitfor == MNT_WAIT) |
| 2376 | error = bwrite(bp); |
| 2377 | else |
| 2378 | bawrite(bp); |
| 2379 | } |
| 2380 | if (!allerror && error) |
| 2381 | allerror = error; |
| 2382 | return (allerror); |
| 2383 | } |
| 2384 | |
| 2385 | int |
| 2386 | ffs_extattrctl(struct mount *mp, int cmd, struct vnode *vp, |
| 2387 | int attrnamespace, const char *attrname) |
| 2388 | { |
| 2389 | #ifdef UFS_EXTATTR |
| 2390 | /* |
| 2391 | * File-backed extended attributes are only supported on UFS1. |
| 2392 | * UFS2 has native extended attributes. |
| 2393 | */ |
| 2394 | if (VFSTOUFS(mp)->um_fstype == UFS1) |
| 2395 | return (ufs_extattrctl(mp, cmd, vp, attrnamespace, attrname)); |
| 2396 | #endif |
| 2397 | return (vfs_stdextattrctl(mp, cmd, vp, attrnamespace, attrname)); |
| 2398 | } |
| 2399 | |
| 2400 | int |
| 2401 | ffs_suspendctl(struct mount *mp, int cmd) |
| 2402 | { |
| 2403 | int error; |
| 2404 | struct lwp *l = curlwp; |
| 2405 | |
| 2406 | switch (cmd) { |
| 2407 | case SUSPEND_SUSPEND: |
| 2408 | if ((error = fstrans_setstate(mp, FSTRANS_SUSPENDING)) != 0) |
| 2409 | return error; |
| 2410 | error = ffs_sync(mp, MNT_WAIT, l->l_proc->p_cred); |
| 2411 | if (error == 0) |
| 2412 | error = fstrans_setstate(mp, FSTRANS_SUSPENDED); |
| 2413 | #ifdef WAPBL |
| 2414 | if (error == 0 && mp->mnt_wapbl) |
| 2415 | error = wapbl_flush(mp->mnt_wapbl, 1); |
| 2416 | #endif |
| 2417 | if (error != 0) { |
| 2418 | (void) fstrans_setstate(mp, FSTRANS_NORMAL); |
| 2419 | return error; |
| 2420 | } |
| 2421 | return 0; |
| 2422 | |
| 2423 | case SUSPEND_RESUME: |
| 2424 | return fstrans_setstate(mp, FSTRANS_NORMAL); |
| 2425 | |
| 2426 | default: |
| 2427 | return EINVAL; |
| 2428 | } |
| 2429 | } |
| 2430 | |
| 2431 | /* |
| 2432 | * Synch vnode for a mounted file system. |
| 2433 | */ |
| 2434 | static int |
| 2435 | ffs_vfs_fsync(vnode_t *vp, int flags) |
| 2436 | { |
| 2437 | int error, i, pflags; |
| 2438 | #ifdef WAPBL |
| 2439 | struct mount *mp; |
| 2440 | #endif |
| 2441 | |
| 2442 | KASSERT(vp->v_type == VBLK); |
| 2443 | KASSERT(spec_node_getmountedfs(vp) != NULL); |
| 2444 | |
| 2445 | /* |
| 2446 | * Flush all dirty data associated with the vnode. |
| 2447 | */ |
| 2448 | pflags = PGO_ALLPAGES | PGO_CLEANIT; |
| 2449 | if ((flags & FSYNC_WAIT) != 0) |
| 2450 | pflags |= PGO_SYNCIO; |
| 2451 | mutex_enter(vp->v_interlock); |
| 2452 | error = VOP_PUTPAGES(vp, 0, 0, pflags); |
| 2453 | if (error) |
| 2454 | return error; |
| 2455 | |
| 2456 | #ifdef WAPBL |
| 2457 | mp = spec_node_getmountedfs(vp); |
| 2458 | if (mp && mp->mnt_wapbl) { |
| 2459 | /* |
| 2460 | * Don't bother writing out metadata if the syncer is |
| 2461 | * making the request. We will let the sync vnode |
| 2462 | * write it out in a single burst through a call to |
| 2463 | * VFS_SYNC(). |
| 2464 | */ |
| 2465 | if ((flags & (FSYNC_DATAONLY | FSYNC_LAZY | FSYNC_NOLOG)) != 0) |
| 2466 | return 0; |
| 2467 | |
| 2468 | /* |
| 2469 | * Don't flush the log if the vnode being flushed |
| 2470 | * contains no dirty buffers that could be in the log. |
| 2471 | */ |
| 2472 | if (!LIST_EMPTY(&vp->v_dirtyblkhd)) { |
| 2473 | error = wapbl_flush(mp->mnt_wapbl, 0); |
| 2474 | if (error) |
| 2475 | return error; |
| 2476 | } |
| 2477 | |
| 2478 | if ((flags & FSYNC_WAIT) != 0) { |
| 2479 | mutex_enter(vp->v_interlock); |
| 2480 | while (vp->v_numoutput) |
| 2481 | cv_wait(&vp->v_cv, vp->v_interlock); |
| 2482 | mutex_exit(vp->v_interlock); |
| 2483 | } |
| 2484 | |
| 2485 | return 0; |
| 2486 | } |
| 2487 | #endif /* WAPBL */ |
| 2488 | |
| 2489 | error = vflushbuf(vp, flags); |
| 2490 | if (error == 0 && (flags & FSYNC_CACHE) != 0) { |
| 2491 | i = 1; |
| 2492 | (void)VOP_IOCTL(vp, DIOCCACHESYNC, &i, FWRITE, |
| 2493 | kauth_cred_get()); |
| 2494 | } |
| 2495 | |
| 2496 | return error; |
| 2497 | } |
| 2498 | |