ffs_vnops.c revision 1.127
1 /* $NetBSD: ffs_vnops.c,v 1.127 2017/03/01 21:55:07 hannken 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 1.127 2017/03/01 21:55:07 hannken 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/inode.h> 92 #include <ufs/ufs/dir.h> 93 #include <ufs/ufs/ufs_extern.h> 94 #include <ufs/ufs/ufsmount.h> 95 #include <ufs/ufs/ufs_wapbl.h> 96 97 #include <ufs/ffs/fs.h> 98 #include <ufs/ffs/ffs_extern.h> 99 100 #include <uvm/uvm.h> 101 102 /* Global vfs data structures for ufs. */ 103 int (**ffs_vnodeop_p)(void *); 104 const struct vnodeopv_entry_desc ffs_vnodeop_entries[] = { 105 { &vop_default_desc, vn_default_error }, 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, ufs_access }, /* access */ 113 { &vop_getattr_desc, ufs_getattr }, /* getattr */ 114 { &vop_setattr_desc, ufs_setattr }, /* setattr */ 115 { &vop_read_desc, ffs_read }, /* read */ 116 { &vop_write_desc, ffs_write }, /* write */ 117 { &vop_fallocate_desc, genfs_eopnotsupp }, /* fallocate */ 118 { &vop_fdiscard_desc, genfs_eopnotsupp }, /* fdiscard */ 119 { &vop_ioctl_desc, ufs_ioctl }, /* ioctl */ 120 { &vop_fcntl_desc, ufs_fcntl }, /* fcntl */ 121 { &vop_poll_desc, ufs_poll }, /* poll */ 122 { &vop_kqfilter_desc, genfs_kqfilter }, /* kqfilter */ 123 { &vop_revoke_desc, ufs_revoke }, /* revoke */ 124 { &vop_mmap_desc, ufs_mmap }, /* mmap */ 125 { &vop_fsync_desc, ffs_fsync }, /* fsync */ 126 { &vop_seek_desc, ufs_seek }, /* seek */ 127 { &vop_remove_desc, ufs_remove }, /* remove */ 128 { &vop_link_desc, ufs_link }, /* link */ 129 { &vop_rename_desc, ufs_rename }, /* rename */ 130 { &vop_mkdir_desc, ufs_mkdir }, /* mkdir */ 131 { &vop_rmdir_desc, ufs_rmdir }, /* rmdir */ 132 { &vop_symlink_desc, ufs_symlink }, /* symlink */ 133 { &vop_readdir_desc, ufs_readdir }, /* readdir */ 134 { &vop_readlink_desc, ufs_readlink }, /* readlink */ 135 { &vop_abortop_desc, ufs_abortop }, /* abortop */ 136 { &vop_inactive_desc, ufs_inactive }, /* inactive */ 137 { &vop_reclaim_desc, ffs_reclaim }, /* reclaim */ 138 { &vop_lock_desc, ufs_lock }, /* lock */ 139 { &vop_unlock_desc, ufs_unlock }, /* unlock */ 140 { &vop_bmap_desc, ufs_bmap }, /* bmap */ 141 { &vop_strategy_desc, ufs_strategy }, /* strategy */ 142 { &vop_print_desc, ufs_print }, /* print */ 143 { &vop_islocked_desc, ufs_islocked }, /* islocked */ 144 { &vop_pathconf_desc, ufs_pathconf }, /* pathconf */ 145 { &vop_advlock_desc, ufs_advlock }, /* advlock */ 146 { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ 147 { &vop_getpages_desc, genfs_getpages }, /* getpages */ 148 { &vop_putpages_desc, genfs_putpages }, /* putpages */ 149 { &vop_openextattr_desc, ffs_openextattr }, /* openextattr */ 150 { &vop_closeextattr_desc, ffs_closeextattr }, /* closeextattr */ 151 { &vop_getextattr_desc, ffs_getextattr }, /* getextattr */ 152 { &vop_setextattr_desc, ffs_setextattr }, /* setextattr */ 153 { &vop_listextattr_desc, ffs_listextattr }, /* listextattr */ 154 { &vop_deleteextattr_desc, ffs_deleteextattr }, /* deleteextattr */ 155 { NULL, NULL } 156 }; 157 const struct vnodeopv_desc ffs_vnodeop_opv_desc = 158 { &ffs_vnodeop_p, ffs_vnodeop_entries }; 159 160 int (**ffs_specop_p)(void *); 161 const struct vnodeopv_entry_desc ffs_specop_entries[] = { 162 { &vop_default_desc, vn_default_error }, 163 { &vop_lookup_desc, spec_lookup }, /* lookup */ 164 { &vop_create_desc, spec_create }, /* create */ 165 { &vop_mknod_desc, spec_mknod }, /* mknod */ 166 { &vop_open_desc, spec_open }, /* open */ 167 { &vop_close_desc, ufsspec_close }, /* close */ 168 { &vop_access_desc, ufs_access }, /* access */ 169 { &vop_getattr_desc, ufs_getattr }, /* getattr */ 170 { &vop_setattr_desc, ufs_setattr }, /* setattr */ 171 { &vop_read_desc, ufsspec_read }, /* read */ 172 { &vop_write_desc, ufsspec_write }, /* write */ 173 { &vop_fallocate_desc, spec_fallocate }, /* fallocate */ 174 { &vop_fdiscard_desc, spec_fdiscard }, /* fdiscard */ 175 { &vop_ioctl_desc, spec_ioctl }, /* ioctl */ 176 { &vop_fcntl_desc, ufs_fcntl }, /* fcntl */ 177 { &vop_poll_desc, spec_poll }, /* poll */ 178 { &vop_kqfilter_desc, spec_kqfilter }, /* kqfilter */ 179 { &vop_revoke_desc, spec_revoke }, /* revoke */ 180 { &vop_mmap_desc, spec_mmap }, /* mmap */ 181 { &vop_fsync_desc, ffs_spec_fsync }, /* fsync */ 182 { &vop_seek_desc, spec_seek }, /* seek */ 183 { &vop_remove_desc, spec_remove }, /* remove */ 184 { &vop_link_desc, spec_link }, /* link */ 185 { &vop_rename_desc, spec_rename }, /* rename */ 186 { &vop_mkdir_desc, spec_mkdir }, /* mkdir */ 187 { &vop_rmdir_desc, spec_rmdir }, /* rmdir */ 188 { &vop_symlink_desc, spec_symlink }, /* symlink */ 189 { &vop_readdir_desc, spec_readdir }, /* readdir */ 190 { &vop_readlink_desc, spec_readlink }, /* readlink */ 191 { &vop_abortop_desc, spec_abortop }, /* abortop */ 192 { &vop_inactive_desc, ufs_inactive }, /* inactive */ 193 { &vop_reclaim_desc, ffs_reclaim }, /* reclaim */ 194 { &vop_lock_desc, ufs_lock }, /* lock */ 195 { &vop_unlock_desc, ufs_unlock }, /* unlock */ 196 { &vop_bmap_desc, spec_bmap }, /* bmap */ 197 { &vop_strategy_desc, spec_strategy }, /* strategy */ 198 { &vop_print_desc, ufs_print }, /* print */ 199 { &vop_islocked_desc, ufs_islocked }, /* islocked */ 200 { &vop_pathconf_desc, spec_pathconf }, /* pathconf */ 201 { &vop_advlock_desc, spec_advlock }, /* advlock */ 202 { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ 203 { &vop_getpages_desc, spec_getpages }, /* getpages */ 204 { &vop_putpages_desc, spec_putpages }, /* putpages */ 205 { &vop_openextattr_desc, ffs_openextattr }, /* openextattr */ 206 { &vop_closeextattr_desc, ffs_closeextattr }, /* closeextattr */ 207 { &vop_getextattr_desc, ffs_getextattr }, /* getextattr */ 208 { &vop_setextattr_desc, ffs_setextattr }, /* setextattr */ 209 { &vop_listextattr_desc, ffs_listextattr }, /* listextattr */ 210 { &vop_deleteextattr_desc, ffs_deleteextattr }, /* deleteextattr */ 211 { NULL, NULL } 212 }; 213 const struct vnodeopv_desc ffs_specop_opv_desc = 214 { &ffs_specop_p, ffs_specop_entries }; 215 216 int (**ffs_fifoop_p)(void *); 217 const struct vnodeopv_entry_desc ffs_fifoop_entries[] = { 218 { &vop_default_desc, vn_default_error }, 219 { &vop_lookup_desc, vn_fifo_bypass }, /* lookup */ 220 { &vop_create_desc, vn_fifo_bypass }, /* create */ 221 { &vop_mknod_desc, vn_fifo_bypass }, /* mknod */ 222 { &vop_open_desc, vn_fifo_bypass }, /* open */ 223 { &vop_close_desc, ufsfifo_close }, /* close */ 224 { &vop_access_desc, ufs_access }, /* access */ 225 { &vop_getattr_desc, ufs_getattr }, /* getattr */ 226 { &vop_setattr_desc, ufs_setattr }, /* setattr */ 227 { &vop_read_desc, ufsfifo_read }, /* read */ 228 { &vop_write_desc, ufsfifo_write }, /* write */ 229 { &vop_fallocate_desc, vn_fifo_bypass }, /* fallocate */ 230 { &vop_fdiscard_desc, vn_fifo_bypass }, /* fdiscard */ 231 { &vop_ioctl_desc, vn_fifo_bypass }, /* ioctl */ 232 { &vop_fcntl_desc, ufs_fcntl }, /* fcntl */ 233 { &vop_poll_desc, vn_fifo_bypass }, /* poll */ 234 { &vop_kqfilter_desc, vn_fifo_bypass }, /* kqfilter */ 235 { &vop_revoke_desc, vn_fifo_bypass }, /* revoke */ 236 { &vop_mmap_desc, vn_fifo_bypass }, /* mmap */ 237 { &vop_fsync_desc, ffs_fsync }, /* fsync */ 238 { &vop_seek_desc, vn_fifo_bypass }, /* seek */ 239 { &vop_remove_desc, vn_fifo_bypass }, /* remove */ 240 { &vop_link_desc, vn_fifo_bypass }, /* link */ 241 { &vop_rename_desc, vn_fifo_bypass }, /* rename */ 242 { &vop_mkdir_desc, vn_fifo_bypass }, /* mkdir */ 243 { &vop_rmdir_desc, vn_fifo_bypass }, /* rmdir */ 244 { &vop_symlink_desc, vn_fifo_bypass }, /* symlink */ 245 { &vop_readdir_desc, vn_fifo_bypass }, /* readdir */ 246 { &vop_readlink_desc, vn_fifo_bypass }, /* readlink */ 247 { &vop_abortop_desc, vn_fifo_bypass }, /* abortop */ 248 { &vop_inactive_desc, ufs_inactive }, /* inactive */ 249 { &vop_reclaim_desc, ffs_reclaim }, /* reclaim */ 250 { &vop_lock_desc, ufs_lock }, /* lock */ 251 { &vop_unlock_desc, ufs_unlock }, /* unlock */ 252 { &vop_bmap_desc, vn_fifo_bypass }, /* bmap */ 253 { &vop_strategy_desc, vn_fifo_bypass }, /* strategy */ 254 { &vop_print_desc, ufs_print }, /* print */ 255 { &vop_islocked_desc, ufs_islocked }, /* islocked */ 256 { &vop_pathconf_desc, vn_fifo_bypass }, /* pathconf */ 257 { &vop_advlock_desc, vn_fifo_bypass }, /* advlock */ 258 { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ 259 { &vop_putpages_desc, vn_fifo_bypass }, /* putpages */ 260 { &vop_openextattr_desc, ffs_openextattr }, /* openextattr */ 261 { &vop_closeextattr_desc, ffs_closeextattr }, /* closeextattr */ 262 { &vop_getextattr_desc, ffs_getextattr }, /* getextattr */ 263 { &vop_setextattr_desc, ffs_setextattr }, /* setextattr */ 264 { &vop_listextattr_desc, ffs_listextattr }, /* listextattr */ 265 { &vop_deleteextattr_desc, ffs_deleteextattr }, /* deleteextattr */ 266 { NULL, NULL } 267 }; 268 const struct vnodeopv_desc ffs_fifoop_opv_desc = 269 { &ffs_fifoop_p, ffs_fifoop_entries }; 270 271 #include <ufs/ufs/ufs_readwrite.c> 272 273 int 274 ffs_spec_fsync(void *v) 275 { 276 struct vop_fsync_args /* { 277 struct vnode *a_vp; 278 kauth_cred_t a_cred; 279 int a_flags; 280 off_t a_offlo; 281 off_t a_offhi; 282 struct lwp *a_l; 283 } */ *ap = v; 284 int error, flags, uflags; 285 struct vnode *vp; 286 #ifdef WAPBL 287 struct mount *mp; 288 #endif /* WAPBL */ 289 290 flags = ap->a_flags; 291 uflags = UPDATE_CLOSE | ((flags & FSYNC_WAIT) ? UPDATE_WAIT : 0); 292 vp = ap->a_vp; 293 294 error = spec_fsync(v); 295 if (error) 296 goto out; 297 298 #ifdef WAPBL 299 mp = vp->v_mount; 300 if (mp && mp->mnt_wapbl) { 301 /* 302 * Don't bother writing out metadata if the syncer is 303 * making the request. We will let the sync vnode 304 * write it out in a single burst through a call to 305 * VFS_SYNC(). 306 */ 307 if ((flags & (FSYNC_DATAONLY | FSYNC_LAZY)) != 0) 308 goto out; 309 if ((VTOI(vp)->i_flag & (IN_ACCESS | IN_CHANGE | IN_UPDATE 310 | IN_MODIFY | IN_MODIFIED | IN_ACCESSED)) != 0) { 311 error = UFS_WAPBL_BEGIN(mp); 312 if (error != 0) 313 goto out; 314 error = ffs_update(vp, NULL, NULL, uflags); 315 UFS_WAPBL_END(mp); 316 } 317 goto out; 318 } 319 #endif /* WAPBL */ 320 321 error = ffs_update(vp, NULL, NULL, uflags); 322 323 out: 324 return error; 325 } 326 327 int 328 ffs_fsync(void *v) 329 { 330 struct vop_fsync_args /* { 331 struct vnode *a_vp; 332 kauth_cred_t a_cred; 333 int a_flags; 334 off_t a_offlo; 335 off_t a_offhi; 336 struct lwp *a_l; 337 } */ *ap = v; 338 struct buf *bp; 339 int num, error, i; 340 struct indir ia[UFS_NIADDR + 1]; 341 int bsize; 342 daddr_t blk_high; 343 struct vnode *vp; 344 struct mount *mp; 345 346 vp = ap->a_vp; 347 mp = vp->v_mount; 348 349 if ((ap->a_offlo == 0 && ap->a_offhi == 0) || (vp->v_type != VREG)) { 350 error = ffs_full_fsync(vp, ap->a_flags); 351 goto out; 352 } 353 354 bsize = mp->mnt_stat.f_iosize; 355 blk_high = ap->a_offhi / bsize; 356 if (ap->a_offhi % bsize != 0) 357 blk_high++; 358 359 /* 360 * First, flush all pages in range. 361 */ 362 363 mutex_enter(vp->v_interlock); 364 error = VOP_PUTPAGES(vp, trunc_page(ap->a_offlo), 365 round_page(ap->a_offhi), PGO_CLEANIT | 366 ((ap->a_flags & FSYNC_WAIT) ? PGO_SYNCIO : 0)); 367 if (error) { 368 goto out; 369 } 370 371 #ifdef WAPBL 372 KASSERT(vp->v_type == VREG); 373 if (mp->mnt_wapbl) { 374 /* 375 * Don't bother writing out metadata if the syncer is 376 * making the request. We will let the sync vnode 377 * write it out in a single burst through a call to 378 * VFS_SYNC(). 379 */ 380 if ((ap->a_flags & (FSYNC_DATAONLY | FSYNC_LAZY)) != 0) { 381 return 0; 382 } 383 error = 0; 384 if (vp->v_tag == VT_UFS && VTOI(vp)->i_flag & 385 (IN_ACCESS | IN_CHANGE | IN_UPDATE | IN_MODIFY | 386 IN_MODIFIED | IN_ACCESSED)) { 387 error = UFS_WAPBL_BEGIN(mp); 388 if (error) { 389 return error; 390 } 391 error = ffs_update(vp, NULL, NULL, UPDATE_CLOSE | 392 ((ap->a_flags & FSYNC_WAIT) ? UPDATE_WAIT : 0)); 393 UFS_WAPBL_END(mp); 394 } 395 if (error || (ap->a_flags & FSYNC_NOLOG) != 0) { 396 return error; 397 } 398 error = wapbl_flush(mp->mnt_wapbl, 0); 399 return error; 400 } 401 #endif /* WAPBL */ 402 403 /* 404 * Then, flush indirect blocks. 405 */ 406 407 if (blk_high >= UFS_NDADDR) { 408 error = ufs_getlbns(vp, blk_high, ia, &num); 409 if (error) 410 goto out; 411 412 mutex_enter(&bufcache_lock); 413 for (i = 0; i < num; i++) { 414 if ((bp = incore(vp, ia[i].in_lbn)) == NULL) 415 continue; 416 if ((bp->b_cflags & BC_BUSY) != 0 || 417 (bp->b_oflags & BO_DELWRI) == 0) 418 continue; 419 bp->b_cflags |= BC_BUSY | BC_VFLUSH; 420 mutex_exit(&bufcache_lock); 421 bawrite(bp); 422 mutex_enter(&bufcache_lock); 423 } 424 mutex_exit(&bufcache_lock); 425 } 426 427 if (ap->a_flags & FSYNC_WAIT) { 428 mutex_enter(vp->v_interlock); 429 while (vp->v_numoutput > 0) 430 cv_wait(&vp->v_cv, vp->v_interlock); 431 mutex_exit(vp->v_interlock); 432 } 433 434 error = ffs_update(vp, NULL, NULL, UPDATE_CLOSE | 435 (((ap->a_flags & (FSYNC_WAIT | FSYNC_DATAONLY)) == FSYNC_WAIT) 436 ? UPDATE_WAIT : 0)); 437 438 if (error == 0 && ap->a_flags & FSYNC_CACHE) { 439 int l = 0; 440 VOP_IOCTL(VTOI(vp)->i_devvp, DIOCCACHESYNC, &l, FWRITE, 441 curlwp->l_cred); 442 } 443 444 out: 445 return error; 446 } 447 448 /* 449 * Synch an open file. Called for VOP_FSYNC(). 450 */ 451 /* ARGSUSED */ 452 int 453 ffs_full_fsync(struct vnode *vp, int flags) 454 { 455 int error, i, uflags; 456 457 KASSERT(vp->v_tag == VT_UFS); 458 KASSERT(VTOI(vp) != NULL); 459 KASSERT(vp->v_type != VCHR && vp->v_type != VBLK); 460 461 uflags = UPDATE_CLOSE | ((flags & FSYNC_WAIT) ? UPDATE_WAIT : 0); 462 463 #ifdef WAPBL 464 struct mount *mp = vp->v_mount; 465 if (mp && mp->mnt_wapbl) { 466 467 /* 468 * Flush all dirty data associated with the vnode. 469 */ 470 if (vp->v_type == VREG) { 471 int pflags = PGO_ALLPAGES | PGO_CLEANIT; 472 473 if ((flags & FSYNC_LAZY)) 474 pflags |= PGO_LAZY; 475 if ((flags & FSYNC_WAIT)) 476 pflags |= PGO_SYNCIO; 477 mutex_enter(vp->v_interlock); 478 error = VOP_PUTPAGES(vp, 0, 0, pflags); 479 if (error) 480 return error; 481 } 482 483 /* 484 * Don't bother writing out metadata if the syncer is 485 * making the request. We will let the sync vnode 486 * write it out in a single burst through a call to 487 * VFS_SYNC(). 488 */ 489 if ((flags & (FSYNC_DATAONLY | FSYNC_LAZY)) != 0) 490 return 0; 491 492 if ((VTOI(vp)->i_flag & (IN_ACCESS | IN_CHANGE | IN_UPDATE 493 | IN_MODIFY | IN_MODIFIED | IN_ACCESSED)) != 0) { 494 error = UFS_WAPBL_BEGIN(mp); 495 if (error) 496 return error; 497 error = ffs_update(vp, NULL, NULL, uflags); 498 UFS_WAPBL_END(mp); 499 } else { 500 error = 0; 501 } 502 if (error || (flags & FSYNC_NOLOG) != 0) 503 return error; 504 505 /* 506 * Don't flush the log if the vnode being flushed 507 * contains no dirty buffers that could be in the log. 508 */ 509 if (!LIST_EMPTY(&vp->v_dirtyblkhd)) { 510 error = wapbl_flush(mp->mnt_wapbl, 0); 511 if (error) 512 return error; 513 } 514 515 if ((flags & FSYNC_WAIT) != 0) { 516 mutex_enter(vp->v_interlock); 517 while (vp->v_numoutput != 0) 518 cv_wait(&vp->v_cv, vp->v_interlock); 519 mutex_exit(vp->v_interlock); 520 } 521 522 return error; 523 } 524 #endif /* WAPBL */ 525 526 error = vflushbuf(vp, flags); 527 if (error == 0) 528 error = ffs_update(vp, NULL, NULL, uflags); 529 if (error == 0 && (flags & FSYNC_CACHE) != 0) { 530 i = 1; 531 (void)VOP_IOCTL(VTOI(vp)->i_devvp, DIOCCACHESYNC, &i, FWRITE, 532 kauth_cred_get()); 533 } 534 535 return error; 536 } 537 538 /* 539 * Reclaim an inode so that it can be used for other purposes. 540 */ 541 int 542 ffs_reclaim(void *v) 543 { 544 struct vop_reclaim_args /* { 545 struct vnode *a_vp; 546 struct lwp *a_l; 547 } */ *ap = v; 548 struct vnode *vp = ap->a_vp; 549 struct inode *ip = VTOI(vp); 550 struct mount *mp = vp->v_mount; 551 struct ufsmount *ump = ip->i_ump; 552 void *data; 553 int error; 554 555 /* 556 * The inode must be freed and updated before being removed 557 * from its hash chain. Other threads trying to gain a hold 558 * or lock on the inode will be stalled. 559 */ 560 error = UFS_WAPBL_BEGIN(mp); 561 if (error) { 562 return error; 563 } 564 if (ip->i_nlink <= 0 && ip->i_omode != 0 && 565 (vp->v_mount->mnt_flag & MNT_RDONLY) == 0) 566 ffs_vfree(vp, ip->i_number, ip->i_omode); 567 UFS_WAPBL_END(mp); 568 if ((error = ufs_reclaim(vp)) != 0) { 569 return (error); 570 } 571 if (ip->i_din.ffs1_din != NULL) { 572 if (ump->um_fstype == UFS1) 573 pool_cache_put(ffs_dinode1_cache, ip->i_din.ffs1_din); 574 else 575 pool_cache_put(ffs_dinode2_cache, ip->i_din.ffs2_din); 576 } 577 /* 578 * To interlock with ffs_sync(). 579 */ 580 genfs_node_destroy(vp); 581 mutex_enter(vp->v_interlock); 582 data = vp->v_data; 583 vp->v_data = NULL; 584 mutex_exit(vp->v_interlock); 585 586 /* 587 * XXX MFS ends up here, too, to free an inode. Should we create 588 * XXX a separate pool for MFS inodes? 589 */ 590 pool_cache_put(ffs_inode_cache, data); 591 return (0); 592 } 593 594 /* 595 * Return the last logical file offset that should be written for this file 596 * if we're doing a write that ends at "size". 597 */ 598 599 void 600 ffs_gop_size(struct vnode *vp, off_t size, off_t *eobp, int flags) 601 { 602 struct inode *ip = VTOI(vp); 603 struct fs *fs = ip->i_fs; 604 daddr_t olbn, nlbn; 605 606 olbn = ffs_lblkno(fs, ip->i_size); 607 nlbn = ffs_lblkno(fs, size); 608 if (nlbn < UFS_NDADDR && olbn <= nlbn) { 609 *eobp = ffs_fragroundup(fs, size); 610 } else { 611 *eobp = ffs_blkroundup(fs, size); 612 } 613 } 614 615 int 616 ffs_openextattr(void *v) 617 { 618 struct vop_openextattr_args /* { 619 struct vnode *a_vp; 620 kauth_cred_t a_cred; 621 struct proc *a_p; 622 } */ *ap = v; 623 struct inode *ip = VTOI(ap->a_vp); 624 struct fs *fs = ip->i_fs; 625 626 /* Not supported for UFS1 file systems. */ 627 if (fs->fs_magic == FS_UFS1_MAGIC) 628 return (EOPNOTSUPP); 629 630 /* XXX Not implemented for UFS2 file systems. */ 631 return (EOPNOTSUPP); 632 } 633 634 int 635 ffs_closeextattr(void *v) 636 { 637 struct vop_closeextattr_args /* { 638 struct vnode *a_vp; 639 int a_commit; 640 kauth_cred_t a_cred; 641 struct proc *a_p; 642 } */ *ap = v; 643 struct inode *ip = VTOI(ap->a_vp); 644 struct fs *fs = ip->i_fs; 645 646 /* Not supported for UFS1 file systems. */ 647 if (fs->fs_magic == FS_UFS1_MAGIC) 648 return (EOPNOTSUPP); 649 650 /* XXX Not implemented for UFS2 file systems. */ 651 return (EOPNOTSUPP); 652 } 653 654 int 655 ffs_getextattr(void *v) 656 { 657 struct vop_getextattr_args /* { 658 struct vnode *a_vp; 659 int a_attrnamespace; 660 const char *a_name; 661 struct uio *a_uio; 662 size_t *a_size; 663 kauth_cred_t a_cred; 664 struct proc *a_p; 665 } */ *ap = v; 666 struct vnode *vp = ap->a_vp; 667 struct inode *ip = VTOI(vp); 668 struct fs *fs = ip->i_fs; 669 670 if (fs->fs_magic == FS_UFS1_MAGIC) { 671 #ifdef UFS_EXTATTR 672 int error; 673 674 error = ufs_getextattr(ap); 675 return error; 676 #else 677 return (EOPNOTSUPP); 678 #endif 679 } 680 681 /* XXX Not implemented for UFS2 file systems. */ 682 return (EOPNOTSUPP); 683 } 684 685 int 686 ffs_setextattr(void *v) 687 { 688 struct vop_setextattr_args /* { 689 struct vnode *a_vp; 690 int a_attrnamespace; 691 const char *a_name; 692 struct uio *a_uio; 693 kauth_cred_t a_cred; 694 struct proc *a_p; 695 } */ *ap = v; 696 struct vnode *vp = ap->a_vp; 697 struct inode *ip = VTOI(vp); 698 struct fs *fs = ip->i_fs; 699 700 if (fs->fs_magic == FS_UFS1_MAGIC) { 701 #ifdef UFS_EXTATTR 702 int error; 703 704 error = ufs_setextattr(ap); 705 return error; 706 #else 707 return (EOPNOTSUPP); 708 #endif 709 } 710 711 /* XXX Not implemented for UFS2 file systems. */ 712 return (EOPNOTSUPP); 713 } 714 715 int 716 ffs_listextattr(void *v) 717 { 718 struct vop_listextattr_args /* { 719 struct vnode *a_vp; 720 int a_attrnamespace; 721 struct uio *a_uio; 722 size_t *a_size; 723 kauth_cred_t a_cred; 724 struct proc *a_p; 725 } */ *ap = v; 726 struct inode *ip = VTOI(ap->a_vp); 727 struct fs *fs = ip->i_fs; 728 729 if (fs->fs_magic == FS_UFS1_MAGIC) { 730 #ifdef UFS_EXTATTR 731 int error; 732 733 error = ufs_listextattr(ap); 734 return error; 735 #else 736 return (EOPNOTSUPP); 737 #endif 738 } 739 740 /* XXX Not implemented for UFS2 file systems. */ 741 return (EOPNOTSUPP); 742 } 743 744 int 745 ffs_deleteextattr(void *v) 746 { 747 struct vop_deleteextattr_args /* { 748 struct vnode *a_vp; 749 int a_attrnamespace; 750 kauth_cred_t a_cred; 751 struct proc *a_p; 752 } */ *ap = v; 753 struct vnode *vp = ap->a_vp; 754 struct inode *ip = VTOI(vp); 755 struct fs *fs = ip->i_fs; 756 757 if (fs->fs_magic == FS_UFS1_MAGIC) { 758 #ifdef UFS_EXTATTR 759 int error; 760 761 error = ufs_deleteextattr(ap); 762 return error; 763 #else 764 return (EOPNOTSUPP); 765 #endif 766 } 767 768 /* XXX Not implemented for UFS2 file systems. */ 769 return (EOPNOTSUPP); 770 } 771
Indexes created Wed Oct 22 13:09:56 GMT 2025