ffs_vnops.c revision 1.126
1 /* $NetBSD: ffs_vnops.c,v 1.126 2017/03/01 10:42:45 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 1.126 2017/03/01 10:42:45 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 struct mount *mp; 287 288 flags = ap->a_flags; 289 uflags = UPDATE_CLOSE | ((flags & FSYNC_WAIT) ? UPDATE_WAIT : 0); 290 vp = ap->a_vp; 291 mp = vp->v_mount; 292 293 error = spec_fsync(v); 294 if (error) 295 goto out; 296 297 #ifdef WAPBL 298 if (mp && mp->mnt_wapbl) { 299 /* 300 * Don't bother writing out metadata if the syncer is 301 * making the request. We will let the sync vnode 302 * write it out in a single burst through a call to 303 * VFS_SYNC(). 304 */ 305 if ((flags & (FSYNC_DATAONLY | FSYNC_LAZY)) != 0) 306 goto out; 307 if ((VTOI(vp)->i_flag & (IN_ACCESS | IN_CHANGE | IN_UPDATE 308 | IN_MODIFY | IN_MODIFIED | IN_ACCESSED)) != 0) { 309 error = UFS_WAPBL_BEGIN(mp); 310 if (error != 0) 311 goto out; 312 error = ffs_update(vp, NULL, NULL, uflags); 313 UFS_WAPBL_END(mp); 314 } 315 goto out; 316 } 317 #endif /* WAPBL */ 318 319 error = ffs_update(vp, NULL, NULL, uflags); 320 321 out: 322 return error; 323 } 324 325 int 326 ffs_fsync(void *v) 327 { 328 struct vop_fsync_args /* { 329 struct vnode *a_vp; 330 kauth_cred_t a_cred; 331 int a_flags; 332 off_t a_offlo; 333 off_t a_offhi; 334 struct lwp *a_l; 335 } */ *ap = v; 336 struct buf *bp; 337 int num, error, i; 338 struct indir ia[UFS_NIADDR + 1]; 339 int bsize; 340 daddr_t blk_high; 341 struct vnode *vp; 342 struct mount *mp; 343 344 vp = ap->a_vp; 345 mp = vp->v_mount; 346 347 if ((ap->a_offlo == 0 && ap->a_offhi == 0) || (vp->v_type != VREG)) { 348 error = ffs_full_fsync(vp, ap->a_flags); 349 goto out; 350 } 351 352 bsize = mp->mnt_stat.f_iosize; 353 blk_high = ap->a_offhi / bsize; 354 if (ap->a_offhi % bsize != 0) 355 blk_high++; 356 357 /* 358 * First, flush all pages in range. 359 */ 360 361 mutex_enter(vp->v_interlock); 362 error = VOP_PUTPAGES(vp, trunc_page(ap->a_offlo), 363 round_page(ap->a_offhi), PGO_CLEANIT | 364 ((ap->a_flags & FSYNC_WAIT) ? PGO_SYNCIO : 0)); 365 if (error) { 366 goto out; 367 } 368 369 #ifdef WAPBL 370 KASSERT(vp->v_type == VREG); 371 if (mp->mnt_wapbl) { 372 /* 373 * Don't bother writing out metadata if the syncer is 374 * making the request. We will let the sync vnode 375 * write it out in a single burst through a call to 376 * VFS_SYNC(). 377 */ 378 if ((ap->a_flags & (FSYNC_DATAONLY | FSYNC_LAZY)) != 0) { 379 return 0; 380 } 381 error = 0; 382 if (vp->v_tag == VT_UFS && VTOI(vp)->i_flag & 383 (IN_ACCESS | IN_CHANGE | IN_UPDATE | IN_MODIFY | 384 IN_MODIFIED | IN_ACCESSED)) { 385 error = UFS_WAPBL_BEGIN(mp); 386 if (error) { 387 return error; 388 } 389 error = ffs_update(vp, NULL, NULL, UPDATE_CLOSE | 390 ((ap->a_flags & FSYNC_WAIT) ? UPDATE_WAIT : 0)); 391 UFS_WAPBL_END(mp); 392 } 393 if (error || (ap->a_flags & FSYNC_NOLOG) != 0) { 394 return error; 395 } 396 error = wapbl_flush(mp->mnt_wapbl, 0); 397 return error; 398 } 399 #endif /* WAPBL */ 400 401 /* 402 * Then, flush indirect blocks. 403 */ 404 405 if (blk_high >= UFS_NDADDR) { 406 error = ufs_getlbns(vp, blk_high, ia, &num); 407 if (error) 408 goto out; 409 410 mutex_enter(&bufcache_lock); 411 for (i = 0; i < num; i++) { 412 if ((bp = incore(vp, ia[i].in_lbn)) == NULL) 413 continue; 414 if ((bp->b_cflags & BC_BUSY) != 0 || 415 (bp->b_oflags & BO_DELWRI) == 0) 416 continue; 417 bp->b_cflags |= BC_BUSY | BC_VFLUSH; 418 mutex_exit(&bufcache_lock); 419 bawrite(bp); 420 mutex_enter(&bufcache_lock); 421 } 422 mutex_exit(&bufcache_lock); 423 } 424 425 if (ap->a_flags & FSYNC_WAIT) { 426 mutex_enter(vp->v_interlock); 427 while (vp->v_numoutput > 0) 428 cv_wait(&vp->v_cv, vp->v_interlock); 429 mutex_exit(vp->v_interlock); 430 } 431 432 error = ffs_update(vp, NULL, NULL, UPDATE_CLOSE | 433 (((ap->a_flags & (FSYNC_WAIT | FSYNC_DATAONLY)) == FSYNC_WAIT) 434 ? UPDATE_WAIT : 0)); 435 436 if (error == 0 && ap->a_flags & FSYNC_CACHE) { 437 int l = 0; 438 VOP_IOCTL(VTOI(vp)->i_devvp, DIOCCACHESYNC, &l, FWRITE, 439 curlwp->l_cred); 440 } 441 442 out: 443 return error; 444 } 445 446 /* 447 * Synch an open file. Called for VOP_FSYNC(). 448 */ 449 /* ARGSUSED */ 450 int 451 ffs_full_fsync(struct vnode *vp, int flags) 452 { 453 int error, i, uflags; 454 455 KASSERT(vp->v_tag == VT_UFS); 456 KASSERT(VTOI(vp) != NULL); 457 KASSERT(vp->v_type != VCHR && vp->v_type != VBLK); 458 459 uflags = UPDATE_CLOSE | ((flags & FSYNC_WAIT) ? UPDATE_WAIT : 0); 460 461 #ifdef WAPBL 462 struct mount *mp = vp->v_mount; 463 if (mp && mp->mnt_wapbl) { 464 465 /* 466 * Flush all dirty data associated with the vnode. 467 */ 468 if (vp->v_type == VREG) { 469 int pflags = PGO_ALLPAGES | PGO_CLEANIT; 470 471 if ((flags & FSYNC_LAZY)) 472 pflags |= PGO_LAZY; 473 if ((flags & FSYNC_WAIT)) 474 pflags |= PGO_SYNCIO; 475 mutex_enter(vp->v_interlock); 476 error = VOP_PUTPAGES(vp, 0, 0, pflags); 477 if (error) 478 return error; 479 } 480 481 /* 482 * Don't bother writing out metadata if the syncer is 483 * making the request. We will let the sync vnode 484 * write it out in a single burst through a call to 485 * VFS_SYNC(). 486 */ 487 if ((flags & (FSYNC_DATAONLY | FSYNC_LAZY)) != 0) 488 return 0; 489 490 if ((VTOI(vp)->i_flag & (IN_ACCESS | IN_CHANGE | IN_UPDATE 491 | IN_MODIFY | IN_MODIFIED | IN_ACCESSED)) != 0) { 492 error = UFS_WAPBL_BEGIN(mp); 493 if (error) 494 return error; 495 error = ffs_update(vp, NULL, NULL, uflags); 496 UFS_WAPBL_END(mp); 497 } else { 498 error = 0; 499 } 500 if (error || (flags & FSYNC_NOLOG) != 0) 501 return error; 502 503 /* 504 * Don't flush the log if the vnode being flushed 505 * contains no dirty buffers that could be in the log. 506 */ 507 if (!LIST_EMPTY(&vp->v_dirtyblkhd)) { 508 error = wapbl_flush(mp->mnt_wapbl, 0); 509 if (error) 510 return error; 511 } 512 513 if ((flags & FSYNC_WAIT) != 0) { 514 mutex_enter(vp->v_interlock); 515 while (vp->v_numoutput != 0) 516 cv_wait(&vp->v_cv, vp->v_interlock); 517 mutex_exit(vp->v_interlock); 518 } 519 520 return error; 521 } 522 #endif /* WAPBL */ 523 524 error = vflushbuf(vp, flags); 525 if (error == 0) 526 error = ffs_update(vp, NULL, NULL, uflags); 527 if (error == 0 && (flags & FSYNC_CACHE) != 0) { 528 i = 1; 529 (void)VOP_IOCTL(VTOI(vp)->i_devvp, DIOCCACHESYNC, &i, FWRITE, 530 kauth_cred_get()); 531 } 532 533 return error; 534 } 535 536 /* 537 * Reclaim an inode so that it can be used for other purposes. 538 */ 539 int 540 ffs_reclaim(void *v) 541 { 542 struct vop_reclaim_args /* { 543 struct vnode *a_vp; 544 struct lwp *a_l; 545 } */ *ap = v; 546 struct vnode *vp = ap->a_vp; 547 struct inode *ip = VTOI(vp); 548 struct mount *mp = vp->v_mount; 549 struct ufsmount *ump = ip->i_ump; 550 void *data; 551 int error; 552 553 /* 554 * The inode must be freed and updated before being removed 555 * from its hash chain. Other threads trying to gain a hold 556 * or lock on the inode will be stalled. 557 */ 558 error = UFS_WAPBL_BEGIN(mp); 559 if (error) { 560 return error; 561 } 562 if (ip->i_nlink <= 0 && ip->i_omode != 0 && 563 (vp->v_mount->mnt_flag & MNT_RDONLY) == 0) 564 ffs_vfree(vp, ip->i_number, ip->i_omode); 565 UFS_WAPBL_END(mp); 566 if ((error = ufs_reclaim(vp)) != 0) { 567 return (error); 568 } 569 if (ip->i_din.ffs1_din != NULL) { 570 if (ump->um_fstype == UFS1) 571 pool_cache_put(ffs_dinode1_cache, ip->i_din.ffs1_din); 572 else 573 pool_cache_put(ffs_dinode2_cache, ip->i_din.ffs2_din); 574 } 575 /* 576 * To interlock with ffs_sync(). 577 */ 578 genfs_node_destroy(vp); 579 mutex_enter(vp->v_interlock); 580 data = vp->v_data; 581 vp->v_data = NULL; 582 mutex_exit(vp->v_interlock); 583 584 /* 585 * XXX MFS ends up here, too, to free an inode. Should we create 586 * XXX a separate pool for MFS inodes? 587 */ 588 pool_cache_put(ffs_inode_cache, data); 589 return (0); 590 } 591 592 /* 593 * Return the last logical file offset that should be written for this file 594 * if we're doing a write that ends at "size". 595 */ 596 597 void 598 ffs_gop_size(struct vnode *vp, off_t size, off_t *eobp, int flags) 599 { 600 struct inode *ip = VTOI(vp); 601 struct fs *fs = ip->i_fs; 602 daddr_t olbn, nlbn; 603 604 olbn = ffs_lblkno(fs, ip->i_size); 605 nlbn = ffs_lblkno(fs, size); 606 if (nlbn < UFS_NDADDR && olbn <= nlbn) { 607 *eobp = ffs_fragroundup(fs, size); 608 } else { 609 *eobp = ffs_blkroundup(fs, size); 610 } 611 } 612 613 int 614 ffs_openextattr(void *v) 615 { 616 struct vop_openextattr_args /* { 617 struct vnode *a_vp; 618 kauth_cred_t a_cred; 619 struct proc *a_p; 620 } */ *ap = v; 621 struct inode *ip = VTOI(ap->a_vp); 622 struct fs *fs = ip->i_fs; 623 624 /* Not supported for UFS1 file systems. */ 625 if (fs->fs_magic == FS_UFS1_MAGIC) 626 return (EOPNOTSUPP); 627 628 /* XXX Not implemented for UFS2 file systems. */ 629 return (EOPNOTSUPP); 630 } 631 632 int 633 ffs_closeextattr(void *v) 634 { 635 struct vop_closeextattr_args /* { 636 struct vnode *a_vp; 637 int a_commit; 638 kauth_cred_t a_cred; 639 struct proc *a_p; 640 } */ *ap = v; 641 struct inode *ip = VTOI(ap->a_vp); 642 struct fs *fs = ip->i_fs; 643 644 /* Not supported for UFS1 file systems. */ 645 if (fs->fs_magic == FS_UFS1_MAGIC) 646 return (EOPNOTSUPP); 647 648 /* XXX Not implemented for UFS2 file systems. */ 649 return (EOPNOTSUPP); 650 } 651 652 int 653 ffs_getextattr(void *v) 654 { 655 struct vop_getextattr_args /* { 656 struct vnode *a_vp; 657 int a_attrnamespace; 658 const char *a_name; 659 struct uio *a_uio; 660 size_t *a_size; 661 kauth_cred_t a_cred; 662 struct proc *a_p; 663 } */ *ap = v; 664 struct vnode *vp = ap->a_vp; 665 struct inode *ip = VTOI(vp); 666 struct fs *fs = ip->i_fs; 667 668 if (fs->fs_magic == FS_UFS1_MAGIC) { 669 #ifdef UFS_EXTATTR 670 int error; 671 672 error = ufs_getextattr(ap); 673 return error; 674 #else 675 return (EOPNOTSUPP); 676 #endif 677 } 678 679 /* XXX Not implemented for UFS2 file systems. */ 680 return (EOPNOTSUPP); 681 } 682 683 int 684 ffs_setextattr(void *v) 685 { 686 struct vop_setextattr_args /* { 687 struct vnode *a_vp; 688 int a_attrnamespace; 689 const char *a_name; 690 struct uio *a_uio; 691 kauth_cred_t a_cred; 692 struct proc *a_p; 693 } */ *ap = v; 694 struct vnode *vp = ap->a_vp; 695 struct inode *ip = VTOI(vp); 696 struct fs *fs = ip->i_fs; 697 698 if (fs->fs_magic == FS_UFS1_MAGIC) { 699 #ifdef UFS_EXTATTR 700 int error; 701 702 error = ufs_setextattr(ap); 703 return error; 704 #else 705 return (EOPNOTSUPP); 706 #endif 707 } 708 709 /* XXX Not implemented for UFS2 file systems. */ 710 return (EOPNOTSUPP); 711 } 712 713 int 714 ffs_listextattr(void *v) 715 { 716 struct vop_listextattr_args /* { 717 struct vnode *a_vp; 718 int a_attrnamespace; 719 struct uio *a_uio; 720 size_t *a_size; 721 kauth_cred_t a_cred; 722 struct proc *a_p; 723 } */ *ap = v; 724 struct inode *ip = VTOI(ap->a_vp); 725 struct fs *fs = ip->i_fs; 726 727 if (fs->fs_magic == FS_UFS1_MAGIC) { 728 #ifdef UFS_EXTATTR 729 int error; 730 731 error = ufs_listextattr(ap); 732 return error; 733 #else 734 return (EOPNOTSUPP); 735 #endif 736 } 737 738 /* XXX Not implemented for UFS2 file systems. */ 739 return (EOPNOTSUPP); 740 } 741 742 int 743 ffs_deleteextattr(void *v) 744 { 745 struct vop_deleteextattr_args /* { 746 struct vnode *a_vp; 747 int a_attrnamespace; 748 kauth_cred_t a_cred; 749 struct proc *a_p; 750 } */ *ap = v; 751 struct vnode *vp = ap->a_vp; 752 struct inode *ip = VTOI(vp); 753 struct fs *fs = ip->i_fs; 754 755 if (fs->fs_magic == FS_UFS1_MAGIC) { 756 #ifdef UFS_EXTATTR 757 int error; 758 759 error = ufs_deleteextattr(ap); 760 return error; 761 #else 762 return (EOPNOTSUPP); 763 #endif 764 } 765 766 /* XXX Not implemented for UFS2 file systems. */ 767 return (EOPNOTSUPP); 768 } 769
Indexes created Thu Oct 23 22:10:10 GMT 2025