ffs_vnops.c revision 1.134
1 /* $NetBSD: ffs_vnops.c,v 1.134 2021/06/29 22:34:09 dholland 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) 1982, 1986, 1989, 1993 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_vnops.c 8.15 (Berkeley) 5/14/95 61 */ 62 63 #include <sys/cdefs.h> 64 __KERNEL_RCSID(0, "$NetBSD: ffs_vnops.c,v 1.134 2021/06/29 22:34:09 dholland Exp $"); 65 66 #if defined(_KERNEL_OPT) 67 #include "opt_ffs.h" 68 #include "opt_wapbl.h" 69 #endif 70 71 #include <sys/param.h> 72 #include <sys/systm.h> 73 #include <sys/resourcevar.h> 74 #include <sys/kernel.h> 75 #include <sys/file.h> 76 #include <sys/stat.h> 77 #include <sys/buf.h> 78 #include <sys/event.h> 79 #include <sys/proc.h> 80 #include <sys/mount.h> 81 #include <sys/vnode.h> 82 #include <sys/pool.h> 83 #include <sys/signalvar.h> 84 #include <sys/kauth.h> 85 #include <sys/wapbl.h> 86 87 #include <miscfs/fifofs/fifo.h> 88 #include <miscfs/genfs/genfs.h> 89 #include <miscfs/specfs/specdev.h> 90 91 #include <ufs/ufs/acl.h> 92 #include <ufs/ufs/inode.h> 93 #include <ufs/ufs/dir.h> 94 #include <ufs/ufs/ufs_extern.h> 95 #include <ufs/ufs/ufsmount.h> 96 #include <ufs/ufs/ufs_wapbl.h> 97 98 #include <ufs/ffs/fs.h> 99 #include <ufs/ffs/ffs_extern.h> 100 101 /* Global vfs data structures for ufs. */ 102 int (**ffs_vnodeop_p)(void *); 103 const struct vnodeopv_entry_desc ffs_vnodeop_entries[] = { 104 { &vop_default_desc, vn_default_error }, 105 { &vop_parsepath_desc, genfs_parsepath }, /* parsepath */ 106 { &vop_lookup_desc, ufs_lookup }, /* lookup */ 107 { &vop_create_desc, ufs_create }, /* create */ 108 { &vop_whiteout_desc, ufs_whiteout }, /* whiteout */ 109 { &vop_mknod_desc, ufs_mknod }, /* mknod */ 110 { &vop_open_desc, ufs_open }, /* open */ 111 { &vop_close_desc, ufs_close }, /* close */ 112 { &vop_access_desc, genfs_access }, /* access */ 113 { &vop_accessx_desc, ufs_accessx }, /* accessx */ 114 { &vop_getattr_desc, ufs_getattr }, /* getattr */ 115 { &vop_setattr_desc, ufs_setattr }, /* setattr */ 116 { &vop_read_desc, ffs_read }, /* read */ 117 { &vop_write_desc, ffs_write }, /* write */ 118 { &vop_fallocate_desc, genfs_eopnotsupp }, /* fallocate */ 119 { &vop_fdiscard_desc, genfs_eopnotsupp }, /* fdiscard */ 120 { &vop_ioctl_desc, ufs_ioctl }, /* ioctl */ 121 { &vop_fcntl_desc, ufs_fcntl }, /* fcntl */ 122 { &vop_poll_desc, ufs_poll }, /* poll */ 123 { &vop_kqfilter_desc, genfs_kqfilter }, /* kqfilter */ 124 { &vop_revoke_desc, ufs_revoke }, /* revoke */ 125 { &vop_mmap_desc, ufs_mmap }, /* mmap */ 126 { &vop_fsync_desc, ffs_fsync }, /* fsync */ 127 { &vop_seek_desc, ufs_seek }, /* seek */ 128 { &vop_remove_desc, ufs_remove }, /* remove */ 129 { &vop_link_desc, ufs_link }, /* link */ 130 { &vop_rename_desc, ufs_rename }, /* rename */ 131 { &vop_mkdir_desc, ufs_mkdir }, /* mkdir */ 132 { &vop_rmdir_desc, ufs_rmdir }, /* rmdir */ 133 { &vop_symlink_desc, ufs_symlink }, /* symlink */ 134 { &vop_readdir_desc, ufs_readdir }, /* readdir */ 135 { &vop_readlink_desc, ufs_readlink }, /* readlink */ 136 { &vop_abortop_desc, ufs_abortop }, /* abortop */ 137 { &vop_inactive_desc, ufs_inactive }, /* inactive */ 138 { &vop_reclaim_desc, ffs_reclaim }, /* reclaim */ 139 { &vop_lock_desc, ufs_lock }, /* lock */ 140 { &vop_unlock_desc, ufs_unlock }, /* unlock */ 141 { &vop_bmap_desc, ufs_bmap }, /* bmap */ 142 { &vop_strategy_desc, ufs_strategy }, /* strategy */ 143 { &vop_print_desc, ufs_print }, /* print */ 144 { &vop_islocked_desc, ufs_islocked }, /* islocked */ 145 { &vop_pathconf_desc, ufs_pathconf }, /* pathconf */ 146 { &vop_advlock_desc, ufs_advlock }, /* advlock */ 147 { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ 148 { &vop_getpages_desc, genfs_getpages }, /* getpages */ 149 { &vop_putpages_desc, genfs_putpages }, /* putpages */ 150 { &vop_openextattr_desc, ffs_openextattr }, /* openextattr */ 151 { &vop_closeextattr_desc, ffs_closeextattr }, /* closeextattr */ 152 { &vop_getextattr_desc, ffs_getextattr }, /* getextattr */ 153 { &vop_setextattr_desc, ffs_setextattr }, /* setextattr */ 154 { &vop_listextattr_desc, ffs_listextattr }, /* listextattr */ 155 { &vop_deleteextattr_desc, ffs_deleteextattr }, /* deleteextattr */ 156 { &vop_getacl_desc, ufs_getacl }, /* getacl */ 157 { &vop_setacl_desc, ufs_setacl }, /* setacl */ 158 { &vop_aclcheck_desc, ufs_aclcheck }, /* aclcheck */ 159 { NULL, NULL } 160 }; 161 const struct vnodeopv_desc ffs_vnodeop_opv_desc = 162 { &ffs_vnodeop_p, ffs_vnodeop_entries }; 163 164 int (**ffs_specop_p)(void *); 165 const struct vnodeopv_entry_desc ffs_specop_entries[] = { 166 { &vop_default_desc, vn_default_error }, 167 { &vop_parsepath_desc, genfs_parsepath }, /* parsepath */ 168 { &vop_lookup_desc, spec_lookup }, /* lookup */ 169 { &vop_create_desc, spec_create }, /* create */ 170 { &vop_mknod_desc, spec_mknod }, /* mknod */ 171 { &vop_open_desc, spec_open }, /* open */ 172 { &vop_close_desc, ufsspec_close }, /* close */ 173 { &vop_access_desc, genfs_access }, /* access */ 174 { &vop_accessx_desc, ufs_accessx }, /* accessx */ 175 { &vop_getattr_desc, ufs_getattr }, /* getattr */ 176 { &vop_setattr_desc, ufs_setattr }, /* setattr */ 177 { &vop_read_desc, ufsspec_read }, /* read */ 178 { &vop_write_desc, ufsspec_write }, /* write */ 179 { &vop_fallocate_desc, spec_fallocate }, /* fallocate */ 180 { &vop_fdiscard_desc, spec_fdiscard }, /* fdiscard */ 181 { &vop_ioctl_desc, spec_ioctl }, /* ioctl */ 182 { &vop_fcntl_desc, ufs_fcntl }, /* fcntl */ 183 { &vop_poll_desc, spec_poll }, /* poll */ 184 { &vop_kqfilter_desc, spec_kqfilter }, /* kqfilter */ 185 { &vop_revoke_desc, spec_revoke }, /* revoke */ 186 { &vop_mmap_desc, spec_mmap }, /* mmap */ 187 { &vop_fsync_desc, ffs_spec_fsync }, /* fsync */ 188 { &vop_seek_desc, spec_seek }, /* seek */ 189 { &vop_remove_desc, spec_remove }, /* remove */ 190 { &vop_link_desc, spec_link }, /* link */ 191 { &vop_rename_desc, spec_rename }, /* rename */ 192 { &vop_mkdir_desc, spec_mkdir }, /* mkdir */ 193 { &vop_rmdir_desc, spec_rmdir }, /* rmdir */ 194 { &vop_symlink_desc, spec_symlink }, /* symlink */ 195 { &vop_readdir_desc, spec_readdir }, /* readdir */ 196 { &vop_readlink_desc, spec_readlink }, /* readlink */ 197 { &vop_abortop_desc, spec_abortop }, /* abortop */ 198 { &vop_inactive_desc, ufs_inactive }, /* inactive */ 199 { &vop_reclaim_desc, ffs_reclaim }, /* reclaim */ 200 { &vop_lock_desc, ufs_lock }, /* lock */ 201 { &vop_unlock_desc, ufs_unlock }, /* unlock */ 202 { &vop_bmap_desc, spec_bmap }, /* bmap */ 203 { &vop_strategy_desc, spec_strategy }, /* strategy */ 204 { &vop_print_desc, ufs_print }, /* print */ 205 { &vop_islocked_desc, ufs_islocked }, /* islocked */ 206 { &vop_pathconf_desc, spec_pathconf }, /* pathconf */ 207 { &vop_advlock_desc, spec_advlock }, /* advlock */ 208 { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ 209 { &vop_getpages_desc, spec_getpages }, /* getpages */ 210 { &vop_putpages_desc, spec_putpages }, /* putpages */ 211 { &vop_openextattr_desc, ffs_openextattr }, /* openextattr */ 212 { &vop_closeextattr_desc, ffs_closeextattr }, /* closeextattr */ 213 { &vop_getextattr_desc, ffs_getextattr }, /* getextattr */ 214 { &vop_setextattr_desc, ffs_setextattr }, /* setextattr */ 215 { &vop_listextattr_desc, ffs_listextattr }, /* listextattr */ 216 { &vop_deleteextattr_desc, ffs_deleteextattr }, /* deleteextattr */ 217 { &vop_getacl_desc, ufs_getacl }, /* getacl */ 218 { &vop_setacl_desc, ufs_setacl }, /* setacl */ 219 { &vop_aclcheck_desc, ufs_aclcheck }, /* aclcheck */ 220 { NULL, NULL } 221 }; 222 const struct vnodeopv_desc ffs_specop_opv_desc = 223 { &ffs_specop_p, ffs_specop_entries }; 224 225 int (**ffs_fifoop_p)(void *); 226 const struct vnodeopv_entry_desc ffs_fifoop_entries[] = { 227 { &vop_default_desc, vn_default_error }, 228 { &vop_parsepath_desc, genfs_parsepath }, /* parsepath */ 229 { &vop_lookup_desc, vn_fifo_bypass }, /* lookup */ 230 { &vop_create_desc, vn_fifo_bypass }, /* create */ 231 { &vop_mknod_desc, vn_fifo_bypass }, /* mknod */ 232 { &vop_open_desc, vn_fifo_bypass }, /* open */ 233 { &vop_close_desc, ufsfifo_close }, /* close */ 234 { &vop_access_desc, genfs_access }, /* access */ 235 { &vop_accessx_desc, ufs_accessx }, /* accessx */ 236 { &vop_getattr_desc, ufs_getattr }, /* getattr */ 237 { &vop_setattr_desc, ufs_setattr }, /* setattr */ 238 { &vop_read_desc, ufsfifo_read }, /* read */ 239 { &vop_write_desc, ufsfifo_write }, /* write */ 240 { &vop_fallocate_desc, vn_fifo_bypass }, /* fallocate */ 241 { &vop_fdiscard_desc, vn_fifo_bypass }, /* fdiscard */ 242 { &vop_ioctl_desc, vn_fifo_bypass }, /* ioctl */ 243 { &vop_fcntl_desc, ufs_fcntl }, /* fcntl */ 244 { &vop_poll_desc, vn_fifo_bypass }, /* poll */ 245 { &vop_kqfilter_desc, vn_fifo_bypass }, /* kqfilter */ 246 { &vop_revoke_desc, vn_fifo_bypass }, /* revoke */ 247 { &vop_mmap_desc, vn_fifo_bypass }, /* mmap */ 248 { &vop_fsync_desc, ffs_fsync }, /* fsync */ 249 { &vop_seek_desc, vn_fifo_bypass }, /* seek */ 250 { &vop_remove_desc, vn_fifo_bypass }, /* remove */ 251 { &vop_link_desc, vn_fifo_bypass }, /* link */ 252 { &vop_rename_desc, vn_fifo_bypass }, /* rename */ 253 { &vop_mkdir_desc, vn_fifo_bypass }, /* mkdir */ 254 { &vop_rmdir_desc, vn_fifo_bypass }, /* rmdir */ 255 { &vop_symlink_desc, vn_fifo_bypass }, /* symlink */ 256 { &vop_readdir_desc, vn_fifo_bypass }, /* readdir */ 257 { &vop_readlink_desc, vn_fifo_bypass }, /* readlink */ 258 { &vop_abortop_desc, vn_fifo_bypass }, /* abortop */ 259 { &vop_inactive_desc, ufs_inactive }, /* inactive */ 260 { &vop_reclaim_desc, ffs_reclaim }, /* reclaim */ 261 { &vop_lock_desc, ufs_lock }, /* lock */ 262 { &vop_unlock_desc, ufs_unlock }, /* unlock */ 263 { &vop_bmap_desc, vn_fifo_bypass }, /* bmap */ 264 { &vop_strategy_desc, vn_fifo_bypass }, /* strategy */ 265 { &vop_print_desc, ufs_print }, /* print */ 266 { &vop_islocked_desc, ufs_islocked }, /* islocked */ 267 { &vop_pathconf_desc, vn_fifo_bypass }, /* pathconf */ 268 { &vop_advlock_desc, vn_fifo_bypass }, /* advlock */ 269 { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ 270 { &vop_putpages_desc, vn_fifo_bypass }, /* putpages */ 271 { &vop_openextattr_desc, ffs_openextattr }, /* openextattr */ 272 { &vop_closeextattr_desc, ffs_closeextattr }, /* closeextattr */ 273 { &vop_getextattr_desc, ffs_getextattr }, /* getextattr */ 274 { &vop_setextattr_desc, ffs_setextattr }, /* setextattr */ 275 { &vop_listextattr_desc, ffs_listextattr }, /* listextattr */ 276 { &vop_deleteextattr_desc, ffs_deleteextattr }, /* deleteextattr */ 277 { &vop_getacl_desc, ufs_getacl }, /* getacl */ 278 { &vop_setacl_desc, ufs_setacl }, /* setacl */ 279 { &vop_aclcheck_desc, ufs_aclcheck }, /* aclcheck */ 280 { NULL, NULL } 281 }; 282 const struct vnodeopv_desc ffs_fifoop_opv_desc = 283 { &ffs_fifoop_p, ffs_fifoop_entries }; 284 285 #include <ufs/ufs/ufs_readwrite.c> 286 287 int 288 ffs_spec_fsync(void *v) 289 { 290 struct vop_fsync_args /* { 291 struct vnode *a_vp; 292 kauth_cred_t a_cred; 293 int a_flags; 294 off_t a_offlo; 295 off_t a_offhi; 296 struct lwp *a_l; 297 } */ *ap = v; 298 int error, flags, uflags; 299 struct vnode *vp; 300 301 flags = ap->a_flags; 302 uflags = UPDATE_CLOSE | ((flags & FSYNC_WAIT) ? UPDATE_WAIT : 0); 303 vp = ap->a_vp; 304 305 error = spec_fsync(v); 306 if (error) 307 goto out; 308 309 #ifdef WAPBL 310 struct mount *mp = vp->v_mount; 311 312 if (mp && mp->mnt_wapbl) { 313 /* 314 * Don't bother writing out metadata if the syncer is 315 * making the request. We will let the sync vnode 316 * write it out in a single burst through a call to 317 * VFS_SYNC(). 318 */ 319 if ((flags & (FSYNC_DATAONLY | FSYNC_LAZY)) != 0) 320 goto out; 321 if ((VTOI(vp)->i_flag & (IN_ACCESS | IN_CHANGE | IN_UPDATE 322 | IN_MODIFY | IN_MODIFIED | IN_ACCESSED)) != 0) { 323 error = UFS_WAPBL_BEGIN(mp); 324 if (error != 0) 325 goto out; 326 error = ffs_update(vp, NULL, NULL, uflags); 327 UFS_WAPBL_END(mp); 328 } 329 goto out; 330 } 331 #endif /* WAPBL */ 332 333 error = ffs_update(vp, NULL, NULL, uflags); 334 335 out: 336 return error; 337 } 338 339 int 340 ffs_fsync(void *v) 341 { 342 struct vop_fsync_args /* { 343 struct vnode *a_vp; 344 kauth_cred_t a_cred; 345 int a_flags; 346 off_t a_offlo; 347 off_t a_offhi; 348 struct lwp *a_l; 349 } */ *ap = v; 350 struct buf *bp; 351 int num, error, i; 352 struct indir ia[UFS_NIADDR + 1]; 353 int bsize; 354 daddr_t blk_high; 355 struct vnode *vp; 356 struct mount *mp; 357 358 vp = ap->a_vp; 359 mp = vp->v_mount; 360 361 if ((ap->a_offlo == 0 && ap->a_offhi == 0) || (vp->v_type != VREG)) { 362 error = ffs_full_fsync(vp, ap->a_flags); 363 goto out; 364 } 365 366 bsize = mp->mnt_stat.f_iosize; 367 blk_high = ap->a_offhi / bsize; 368 if (ap->a_offhi % bsize != 0) 369 blk_high++; 370 371 /* 372 * First, flush all pages in range. 373 */ 374 375 rw_enter(vp->v_uobj.vmobjlock, RW_WRITER); 376 error = VOP_PUTPAGES(vp, trunc_page(ap->a_offlo), 377 round_page(ap->a_offhi), PGO_CLEANIT | 378 ((ap->a_flags & FSYNC_WAIT) ? PGO_SYNCIO : 0)); 379 if (error) { 380 goto out; 381 } 382 383 #ifdef WAPBL 384 KASSERT(vp->v_type == VREG); 385 if (mp->mnt_wapbl) { 386 /* 387 * Don't bother writing out metadata if the syncer is 388 * making the request. We will let the sync vnode 389 * write it out in a single burst through a call to 390 * VFS_SYNC(). 391 */ 392 if ((ap->a_flags & (FSYNC_DATAONLY | FSYNC_LAZY)) != 0) { 393 return 0; 394 } 395 error = 0; 396 if (vp->v_tag == VT_UFS && VTOI(vp)->i_flag & 397 (IN_ACCESS | IN_CHANGE | IN_UPDATE | IN_MODIFY | 398 IN_MODIFIED | IN_ACCESSED)) { 399 error = UFS_WAPBL_BEGIN(mp); 400 if (error) { 401 return error; 402 } 403 error = ffs_update(vp, NULL, NULL, UPDATE_CLOSE | 404 ((ap->a_flags & FSYNC_WAIT) ? UPDATE_WAIT : 0)); 405 UFS_WAPBL_END(mp); 406 } 407 if (error || (ap->a_flags & FSYNC_NOLOG) != 0) { 408 return error; 409 } 410 error = wapbl_flush(mp->mnt_wapbl, 0); 411 return error; 412 } 413 #endif /* WAPBL */ 414 415 /* 416 * Then, flush indirect blocks. 417 */ 418 419 if (blk_high >= UFS_NDADDR) { 420 error = ufs_getlbns(vp, blk_high, ia, &num); 421 if (error) 422 goto out; 423 424 mutex_enter(&bufcache_lock); 425 for (i = 0; i < num; i++) { 426 if ((bp = incore(vp, ia[i].in_lbn)) == NULL) 427 continue; 428 if ((bp->b_cflags & BC_BUSY) != 0 || 429 (bp->b_oflags & BO_DELWRI) == 0) 430 continue; 431 bp->b_cflags |= BC_BUSY | BC_VFLUSH; 432 mutex_exit(&bufcache_lock); 433 bawrite(bp); 434 mutex_enter(&bufcache_lock); 435 } 436 mutex_exit(&bufcache_lock); 437 } 438 439 if (ap->a_flags & FSYNC_WAIT) { 440 mutex_enter(vp->v_interlock); 441 while (vp->v_numoutput > 0) 442 cv_wait(&vp->v_cv, vp->v_interlock); 443 mutex_exit(vp->v_interlock); 444 } 445 446 error = ffs_update(vp, NULL, NULL, UPDATE_CLOSE | 447 (((ap->a_flags & (FSYNC_WAIT | FSYNC_DATAONLY)) == FSYNC_WAIT) 448 ? UPDATE_WAIT : 0)); 449 450 if (error == 0 && ap->a_flags & FSYNC_CACHE) { 451 int l = 0; 452 VOP_IOCTL(VTOI(vp)->i_devvp, DIOCCACHESYNC, &l, FWRITE, 453 curlwp->l_cred); 454 } 455 456 out: 457 return error; 458 } 459 460 /* 461 * Synch an open file. Called for VOP_FSYNC(). 462 */ 463 /* ARGSUSED */ 464 int 465 ffs_full_fsync(struct vnode *vp, int flags) 466 { 467 int error, i, uflags; 468 469 KASSERT(vp->v_tag == VT_UFS); 470 KASSERT(VTOI(vp) != NULL); 471 KASSERT(vp->v_type != VCHR && vp->v_type != VBLK); 472 473 uflags = UPDATE_CLOSE | ((flags & FSYNC_WAIT) ? UPDATE_WAIT : 0); 474 475 #ifdef WAPBL 476 struct mount *mp = vp->v_mount; 477 478 if (mp && mp->mnt_wapbl) { 479 480 /* 481 * Flush all dirty data associated with the vnode. 482 */ 483 if (vp->v_type == VREG) { 484 int pflags = PGO_ALLPAGES | PGO_CLEANIT; 485 486 if ((flags & FSYNC_LAZY)) 487 pflags |= PGO_LAZY; 488 if ((flags & FSYNC_WAIT)) 489 pflags |= PGO_SYNCIO; 490 rw_enter(vp->v_uobj.vmobjlock, RW_WRITER); 491 error = VOP_PUTPAGES(vp, 0, 0, pflags); 492 if (error) 493 return error; 494 } 495 496 /* 497 * Don't bother writing out metadata if the syncer is 498 * making the request. We will let the sync vnode 499 * write it out in a single burst through a call to 500 * VFS_SYNC(). 501 */ 502 if ((flags & (FSYNC_DATAONLY | FSYNC_LAZY)) != 0) 503 return 0; 504 505 if ((VTOI(vp)->i_flag & (IN_ACCESS | IN_CHANGE | IN_UPDATE 506 | IN_MODIFY | IN_MODIFIED | IN_ACCESSED)) != 0) { 507 error = UFS_WAPBL_BEGIN(mp); 508 if (error) 509 return error; 510 error = ffs_update(vp, NULL, NULL, uflags); 511 UFS_WAPBL_END(mp); 512 } else { 513 error = 0; 514 } 515 if (error || (flags & FSYNC_NOLOG) != 0) 516 return error; 517 518 /* 519 * Don't flush the log if the vnode being flushed 520 * contains no dirty buffers that could be in the log. 521 */ 522 if (!LIST_EMPTY(&vp->v_dirtyblkhd)) { 523 error = wapbl_flush(mp->mnt_wapbl, 0); 524 if (error) 525 return error; 526 } 527 528 if ((flags & FSYNC_WAIT) != 0) { 529 mutex_enter(vp->v_interlock); 530 while (vp->v_numoutput != 0) 531 cv_wait(&vp->v_cv, vp->v_interlock); 532 mutex_exit(vp->v_interlock); 533 } 534 535 return error; 536 } 537 #endif /* WAPBL */ 538 539 error = vflushbuf(vp, flags); 540 if (error == 0) 541 error = ffs_update(vp, NULL, NULL, uflags); 542 if (error == 0 && (flags & FSYNC_CACHE) != 0) { 543 i = 1; 544 (void)VOP_IOCTL(VTOI(vp)->i_devvp, DIOCCACHESYNC, &i, FWRITE, 545 kauth_cred_get()); 546 } 547 548 return error; 549 } 550 551 /* 552 * Reclaim an inode so that it can be used for other purposes. 553 */ 554 int 555 ffs_reclaim(void *v) 556 { 557 struct vop_reclaim_v2_args /* { 558 struct vnode *a_vp; 559 struct lwp *a_l; 560 } */ *ap = v; 561 struct vnode *vp = ap->a_vp; 562 struct inode *ip = VTOI(vp); 563 struct mount *mp = vp->v_mount; 564 struct ufsmount *ump = ip->i_ump; 565 void *data; 566 int error; 567 568 VOP_UNLOCK(vp); 569 570 /* 571 * The inode must be freed and updated before being removed 572 * from its hash chain. Other threads trying to gain a hold 573 * or lock on the inode will be stalled. 574 */ 575 error = UFS_WAPBL_BEGIN(mp); 576 if (error) { 577 return error; 578 } 579 if (ip->i_nlink <= 0 && ip->i_omode != 0 && 580 (vp->v_mount->mnt_flag & MNT_RDONLY) == 0) 581 ffs_vfree(vp, ip->i_number, ip->i_omode); 582 UFS_WAPBL_END(mp); 583 if ((error = ufs_reclaim(vp)) != 0) { 584 return (error); 585 } 586 if (ip->i_din.ffs1_din != NULL) { 587 if (ump->um_fstype == UFS1) 588 pool_cache_put(ffs_dinode1_cache, ip->i_din.ffs1_din); 589 else 590 pool_cache_put(ffs_dinode2_cache, ip->i_din.ffs2_din); 591 } 592 /* 593 * To interlock with ffs_sync(). 594 */ 595 genfs_node_destroy(vp); 596 mutex_enter(vp->v_interlock); 597 data = vp->v_data; 598 vp->v_data = NULL; 599 mutex_exit(vp->v_interlock); 600 601 /* 602 * XXX MFS ends up here, too, to free an inode. Should we create 603 * XXX a separate pool for MFS inodes? 604 */ 605 pool_cache_put(ffs_inode_cache, data); 606 return (0); 607 } 608 609 /* 610 * Return the last logical file offset that should be written for this file 611 * if we're doing a write that ends at "size". 612 */ 613 614 void 615 ffs_gop_size(struct vnode *vp, off_t size, off_t *eobp, int flags) 616 { 617 struct inode *ip = VTOI(vp); 618 struct fs *fs = ip->i_fs; 619 daddr_t olbn, nlbn; 620 621 olbn = ffs_lblkno(fs, ip->i_size); 622 nlbn = ffs_lblkno(fs, size); 623 if (nlbn < UFS_NDADDR && olbn <= nlbn) { 624 *eobp = ffs_fragroundup(fs, size); 625 } else { 626 *eobp = ffs_blkroundup(fs, size); 627 } 628 } 629
Indexes created Thu Oct 02 14:10:14 GMT 2025