lfs_vnops.c revision 1.267
1 /* $NetBSD: lfs_vnops.c,v 1.267 2014/05/17 07:09:59 dholland Exp $ */ 2 3 /*- 4 * Copyright (c) 1999, 2000, 2001, 2002, 2003 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Konrad E. Schroder <perseant (at) hhhh.org>. 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 * Copyright (c) 1986, 1989, 1991, 1993, 1995 33 * The Regents of the University of California. All rights reserved. 34 * 35 * Redistribution and use in source and binary forms, with or without 36 * modification, are permitted provided that the following conditions 37 * are met: 38 * 1. Redistributions of source code must retain the above copyright 39 * notice, this list of conditions and the following disclaimer. 40 * 2. Redistributions in binary form must reproduce the above copyright 41 * notice, this list of conditions and the following disclaimer in the 42 * documentation and/or other materials provided with the distribution. 43 * 3. Neither the name of the University nor the names of its contributors 44 * may be used to endorse or promote products derived from this software 45 * without specific prior written permission. 46 * 47 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 48 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 49 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 50 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 51 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 52 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 53 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 54 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 55 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 56 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 57 * SUCH DAMAGE. 58 * 59 * @(#)lfs_vnops.c 8.13 (Berkeley) 6/10/95 60 */ 61 62 /* from NetBSD: ufs_vnops.c,v 1.213 2013/06/08 05:47:02 kardel Exp */ 63 /*- 64 * Copyright (c) 2008 The NetBSD Foundation, Inc. 65 * All rights reserved. 66 * 67 * This code is derived from software contributed to The NetBSD Foundation 68 * by Wasabi Systems, Inc. 69 * 70 * Redistribution and use in source and binary forms, with or without 71 * modification, are permitted provided that the following conditions 72 * are met: 73 * 1. Redistributions of source code must retain the above copyright 74 * notice, this list of conditions and the following disclaimer. 75 * 2. Redistributions in binary form must reproduce the above copyright 76 * notice, this list of conditions and the following disclaimer in the 77 * documentation and/or other materials provided with the distribution. 78 * 79 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 80 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 81 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 82 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 83 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 84 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 85 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 86 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 87 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 88 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 89 * POSSIBILITY OF SUCH DAMAGE. 90 */ 91 /* 92 * Copyright (c) 1982, 1986, 1989, 1993, 1995 93 * The Regents of the University of California. All rights reserved. 94 * (c) UNIX System Laboratories, Inc. 95 * All or some portions of this file are derived from material licensed 96 * to the University of California by American Telephone and Telegraph 97 * Co. or Unix System Laboratories, Inc. and are reproduced herein with 98 * the permission of UNIX System Laboratories, Inc. 99 * 100 * Redistribution and use in source and binary forms, with or without 101 * modification, are permitted provided that the following conditions 102 * are met: 103 * 1. Redistributions of source code must retain the above copyright 104 * notice, this list of conditions and the following disclaimer. 105 * 2. Redistributions in binary form must reproduce the above copyright 106 * notice, this list of conditions and the following disclaimer in the 107 * documentation and/or other materials provided with the distribution. 108 * 3. Neither the name of the University nor the names of its contributors 109 * may be used to endorse or promote products derived from this software 110 * without specific prior written permission. 111 * 112 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 113 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 114 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 115 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 116 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 117 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 118 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 119 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 120 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 121 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 122 * SUCH DAMAGE. 123 * 124 * @(#)ufs_vnops.c 8.28 (Berkeley) 7/31/95 125 */ 126 127 #include <sys/cdefs.h> 128 __KERNEL_RCSID(0, "$NetBSD: lfs_vnops.c,v 1.267 2014/05/17 07:09:59 dholland Exp $"); 129 130 #ifdef _KERNEL_OPT 131 #include "opt_compat_netbsd.h" 132 #include "opt_uvm_page_trkown.h" 133 #endif 134 135 #include <sys/param.h> 136 #include <sys/systm.h> 137 #include <sys/namei.h> 138 #include <sys/resourcevar.h> 139 #include <sys/kernel.h> 140 #include <sys/file.h> 141 #include <sys/stat.h> 142 #include <sys/buf.h> 143 #include <sys/proc.h> 144 #include <sys/mount.h> 145 #include <sys/vnode.h> 146 #include <sys/pool.h> 147 #include <sys/signalvar.h> 148 #include <sys/kauth.h> 149 #include <sys/syslog.h> 150 #include <sys/fstrans.h> 151 152 #include <miscfs/fifofs/fifo.h> 153 #include <miscfs/genfs/genfs.h> 154 #include <miscfs/specfs/specdev.h> 155 156 #include <ufs/lfs/ulfs_inode.h> 157 #include <ufs/lfs/ulfsmount.h> 158 #include <ufs/lfs/ulfs_bswap.h> 159 #include <ufs/lfs/ulfs_extern.h> 160 161 #include <uvm/uvm.h> 162 #include <uvm/uvm_pmap.h> 163 #include <uvm/uvm_stat.h> 164 #include <uvm/uvm_pager.h> 165 166 #include <ufs/lfs/lfs.h> 167 #include <ufs/lfs/lfs_kernel.h> 168 #include <ufs/lfs/lfs_extern.h> 169 170 extern pid_t lfs_writer_daemon; 171 int lfs_ignore_lazy_sync = 1; 172 173 static int lfs_openextattr(void *v); 174 static int lfs_closeextattr(void *v); 175 static int lfs_getextattr(void *v); 176 static int lfs_setextattr(void *v); 177 static int lfs_listextattr(void *v); 178 static int lfs_deleteextattr(void *v); 179 180 /* 181 * A virgin directory (no blushing please). 182 */ 183 static const struct lfs_dirtemplate mastertemplate = { 184 0, 12, LFS_DT_DIR, 1, ".", 185 0, LFS_DIRBLKSIZ - 12, LFS_DT_DIR, 2, ".." 186 }; 187 188 /* Global vfs data structures for lfs. */ 189 int (**lfs_vnodeop_p)(void *); 190 const struct vnodeopv_entry_desc lfs_vnodeop_entries[] = { 191 { &vop_default_desc, vn_default_error }, 192 { &vop_lookup_desc, ulfs_lookup }, /* lookup */ 193 { &vop_create_desc, lfs_create }, /* create */ 194 { &vop_whiteout_desc, ulfs_whiteout }, /* whiteout */ 195 { &vop_mknod_desc, lfs_mknod }, /* mknod */ 196 { &vop_open_desc, ulfs_open }, /* open */ 197 { &vop_close_desc, lfs_close }, /* close */ 198 { &vop_access_desc, ulfs_access }, /* access */ 199 { &vop_getattr_desc, lfs_getattr }, /* getattr */ 200 { &vop_setattr_desc, lfs_setattr }, /* setattr */ 201 { &vop_read_desc, lfs_read }, /* read */ 202 { &vop_write_desc, lfs_write }, /* write */ 203 { &vop_ioctl_desc, ulfs_ioctl }, /* ioctl */ 204 { &vop_fcntl_desc, lfs_fcntl }, /* fcntl */ 205 { &vop_poll_desc, ulfs_poll }, /* poll */ 206 { &vop_kqfilter_desc, genfs_kqfilter }, /* kqfilter */ 207 { &vop_revoke_desc, ulfs_revoke }, /* revoke */ 208 { &vop_mmap_desc, lfs_mmap }, /* mmap */ 209 { &vop_fsync_desc, lfs_fsync }, /* fsync */ 210 { &vop_seek_desc, ulfs_seek }, /* seek */ 211 { &vop_remove_desc, lfs_remove }, /* remove */ 212 { &vop_link_desc, lfs_link }, /* link */ 213 { &vop_rename_desc, lfs_rename }, /* rename */ 214 { &vop_mkdir_desc, lfs_mkdir }, /* mkdir */ 215 { &vop_rmdir_desc, lfs_rmdir }, /* rmdir */ 216 { &vop_symlink_desc, lfs_symlink }, /* symlink */ 217 { &vop_readdir_desc, ulfs_readdir }, /* readdir */ 218 { &vop_readlink_desc, ulfs_readlink }, /* readlink */ 219 { &vop_abortop_desc, ulfs_abortop }, /* abortop */ 220 { &vop_inactive_desc, lfs_inactive }, /* inactive */ 221 { &vop_reclaim_desc, lfs_reclaim }, /* reclaim */ 222 { &vop_lock_desc, ulfs_lock }, /* lock */ 223 { &vop_unlock_desc, ulfs_unlock }, /* unlock */ 224 { &vop_bmap_desc, ulfs_bmap }, /* bmap */ 225 { &vop_strategy_desc, lfs_strategy }, /* strategy */ 226 { &vop_print_desc, ulfs_print }, /* print */ 227 { &vop_islocked_desc, ulfs_islocked }, /* islocked */ 228 { &vop_pathconf_desc, ulfs_pathconf }, /* pathconf */ 229 { &vop_advlock_desc, ulfs_advlock }, /* advlock */ 230 { &vop_bwrite_desc, lfs_bwrite }, /* bwrite */ 231 { &vop_getpages_desc, lfs_getpages }, /* getpages */ 232 { &vop_putpages_desc, lfs_putpages }, /* putpages */ 233 { &vop_openextattr_desc, lfs_openextattr }, /* openextattr */ 234 { &vop_closeextattr_desc, lfs_closeextattr }, /* closeextattr */ 235 { &vop_getextattr_desc, lfs_getextattr }, /* getextattr */ 236 { &vop_setextattr_desc, lfs_setextattr }, /* setextattr */ 237 { &vop_listextattr_desc, lfs_listextattr }, /* listextattr */ 238 { &vop_deleteextattr_desc, lfs_deleteextattr }, /* deleteextattr */ 239 { NULL, NULL } 240 }; 241 const struct vnodeopv_desc lfs_vnodeop_opv_desc = 242 { &lfs_vnodeop_p, lfs_vnodeop_entries }; 243 244 int (**lfs_specop_p)(void *); 245 const struct vnodeopv_entry_desc lfs_specop_entries[] = { 246 { &vop_default_desc, vn_default_error }, 247 { &vop_lookup_desc, spec_lookup }, /* lookup */ 248 { &vop_create_desc, spec_create }, /* create */ 249 { &vop_mknod_desc, spec_mknod }, /* mknod */ 250 { &vop_open_desc, spec_open }, /* open */ 251 { &vop_close_desc, lfsspec_close }, /* close */ 252 { &vop_access_desc, ulfs_access }, /* access */ 253 { &vop_getattr_desc, lfs_getattr }, /* getattr */ 254 { &vop_setattr_desc, lfs_setattr }, /* setattr */ 255 { &vop_read_desc, ulfsspec_read }, /* read */ 256 { &vop_write_desc, ulfsspec_write }, /* write */ 257 { &vop_ioctl_desc, spec_ioctl }, /* ioctl */ 258 { &vop_fcntl_desc, ulfs_fcntl }, /* fcntl */ 259 { &vop_poll_desc, spec_poll }, /* poll */ 260 { &vop_kqfilter_desc, spec_kqfilter }, /* kqfilter */ 261 { &vop_revoke_desc, spec_revoke }, /* revoke */ 262 { &vop_mmap_desc, spec_mmap }, /* mmap */ 263 { &vop_fsync_desc, spec_fsync }, /* fsync */ 264 { &vop_seek_desc, spec_seek }, /* seek */ 265 { &vop_remove_desc, spec_remove }, /* remove */ 266 { &vop_link_desc, spec_link }, /* link */ 267 { &vop_rename_desc, spec_rename }, /* rename */ 268 { &vop_mkdir_desc, spec_mkdir }, /* mkdir */ 269 { &vop_rmdir_desc, spec_rmdir }, /* rmdir */ 270 { &vop_symlink_desc, spec_symlink }, /* symlink */ 271 { &vop_readdir_desc, spec_readdir }, /* readdir */ 272 { &vop_readlink_desc, spec_readlink }, /* readlink */ 273 { &vop_abortop_desc, spec_abortop }, /* abortop */ 274 { &vop_inactive_desc, lfs_inactive }, /* inactive */ 275 { &vop_reclaim_desc, lfs_reclaim }, /* reclaim */ 276 { &vop_lock_desc, ulfs_lock }, /* lock */ 277 { &vop_unlock_desc, ulfs_unlock }, /* unlock */ 278 { &vop_bmap_desc, spec_bmap }, /* bmap */ 279 { &vop_strategy_desc, spec_strategy }, /* strategy */ 280 { &vop_print_desc, ulfs_print }, /* print */ 281 { &vop_islocked_desc, ulfs_islocked }, /* islocked */ 282 { &vop_pathconf_desc, spec_pathconf }, /* pathconf */ 283 { &vop_advlock_desc, spec_advlock }, /* advlock */ 284 { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ 285 { &vop_getpages_desc, spec_getpages }, /* getpages */ 286 { &vop_putpages_desc, spec_putpages }, /* putpages */ 287 { &vop_openextattr_desc, lfs_openextattr }, /* openextattr */ 288 { &vop_closeextattr_desc, lfs_closeextattr }, /* closeextattr */ 289 { &vop_getextattr_desc, lfs_getextattr }, /* getextattr */ 290 { &vop_setextattr_desc, lfs_setextattr }, /* setextattr */ 291 { &vop_listextattr_desc, lfs_listextattr }, /* listextattr */ 292 { &vop_deleteextattr_desc, lfs_deleteextattr }, /* deleteextattr */ 293 { NULL, NULL } 294 }; 295 const struct vnodeopv_desc lfs_specop_opv_desc = 296 { &lfs_specop_p, lfs_specop_entries }; 297 298 int (**lfs_fifoop_p)(void *); 299 const struct vnodeopv_entry_desc lfs_fifoop_entries[] = { 300 { &vop_default_desc, vn_default_error }, 301 { &vop_lookup_desc, vn_fifo_bypass }, /* lookup */ 302 { &vop_create_desc, vn_fifo_bypass }, /* create */ 303 { &vop_mknod_desc, vn_fifo_bypass }, /* mknod */ 304 { &vop_open_desc, vn_fifo_bypass }, /* open */ 305 { &vop_close_desc, lfsfifo_close }, /* close */ 306 { &vop_access_desc, ulfs_access }, /* access */ 307 { &vop_getattr_desc, lfs_getattr }, /* getattr */ 308 { &vop_setattr_desc, lfs_setattr }, /* setattr */ 309 { &vop_read_desc, ulfsfifo_read }, /* read */ 310 { &vop_write_desc, ulfsfifo_write }, /* write */ 311 { &vop_ioctl_desc, vn_fifo_bypass }, /* ioctl */ 312 { &vop_fcntl_desc, ulfs_fcntl }, /* fcntl */ 313 { &vop_poll_desc, vn_fifo_bypass }, /* poll */ 314 { &vop_kqfilter_desc, vn_fifo_bypass }, /* kqfilter */ 315 { &vop_revoke_desc, vn_fifo_bypass }, /* revoke */ 316 { &vop_mmap_desc, vn_fifo_bypass }, /* mmap */ 317 { &vop_fsync_desc, vn_fifo_bypass }, /* fsync */ 318 { &vop_seek_desc, vn_fifo_bypass }, /* seek */ 319 { &vop_remove_desc, vn_fifo_bypass }, /* remove */ 320 { &vop_link_desc, vn_fifo_bypass }, /* link */ 321 { &vop_rename_desc, vn_fifo_bypass }, /* rename */ 322 { &vop_mkdir_desc, vn_fifo_bypass }, /* mkdir */ 323 { &vop_rmdir_desc, vn_fifo_bypass }, /* rmdir */ 324 { &vop_symlink_desc, vn_fifo_bypass }, /* symlink */ 325 { &vop_readdir_desc, vn_fifo_bypass }, /* readdir */ 326 { &vop_readlink_desc, vn_fifo_bypass }, /* readlink */ 327 { &vop_abortop_desc, vn_fifo_bypass }, /* abortop */ 328 { &vop_inactive_desc, lfs_inactive }, /* inactive */ 329 { &vop_reclaim_desc, lfs_reclaim }, /* reclaim */ 330 { &vop_lock_desc, ulfs_lock }, /* lock */ 331 { &vop_unlock_desc, ulfs_unlock }, /* unlock */ 332 { &vop_bmap_desc, vn_fifo_bypass }, /* bmap */ 333 { &vop_strategy_desc, vn_fifo_bypass }, /* strategy */ 334 { &vop_print_desc, ulfs_print }, /* print */ 335 { &vop_islocked_desc, ulfs_islocked }, /* islocked */ 336 { &vop_pathconf_desc, vn_fifo_bypass }, /* pathconf */ 337 { &vop_advlock_desc, vn_fifo_bypass }, /* advlock */ 338 { &vop_bwrite_desc, lfs_bwrite }, /* bwrite */ 339 { &vop_putpages_desc, vn_fifo_bypass }, /* putpages */ 340 { &vop_openextattr_desc, lfs_openextattr }, /* openextattr */ 341 { &vop_closeextattr_desc, lfs_closeextattr }, /* closeextattr */ 342 { &vop_getextattr_desc, lfs_getextattr }, /* getextattr */ 343 { &vop_setextattr_desc, lfs_setextattr }, /* setextattr */ 344 { &vop_listextattr_desc, lfs_listextattr }, /* listextattr */ 345 { &vop_deleteextattr_desc, lfs_deleteextattr }, /* deleteextattr */ 346 { NULL, NULL } 347 }; 348 const struct vnodeopv_desc lfs_fifoop_opv_desc = 349 { &lfs_fifoop_p, lfs_fifoop_entries }; 350 351 #define LFS_READWRITE 352 #include <ufs/lfs/ulfs_readwrite.c> 353 #undef LFS_READWRITE 354 355 /* 356 * Synch an open file. 357 */ 358 /* ARGSUSED */ 359 int 360 lfs_fsync(void *v) 361 { 362 struct vop_fsync_args /* { 363 struct vnode *a_vp; 364 kauth_cred_t a_cred; 365 int a_flags; 366 off_t offlo; 367 off_t offhi; 368 } */ *ap = v; 369 struct vnode *vp = ap->a_vp; 370 int error, wait; 371 struct inode *ip = VTOI(vp); 372 struct lfs *fs = ip->i_lfs; 373 374 /* If we're mounted read-only, don't try to sync. */ 375 if (fs->lfs_ronly) 376 return 0; 377 378 /* If a removed vnode is being cleaned, no need to sync here. */ 379 if ((ap->a_flags & FSYNC_RECLAIM) != 0 && ip->i_mode == 0) 380 return 0; 381 382 /* 383 * Trickle sync simply adds this vnode to the pager list, as if 384 * the pagedaemon had requested a pageout. 385 */ 386 if (ap->a_flags & FSYNC_LAZY) { 387 if (lfs_ignore_lazy_sync == 0) { 388 mutex_enter(&lfs_lock); 389 if (!(ip->i_flags & IN_PAGING)) { 390 ip->i_flags |= IN_PAGING; 391 TAILQ_INSERT_TAIL(&fs->lfs_pchainhd, ip, 392 i_lfs_pchain); 393 } 394 wakeup(&lfs_writer_daemon); 395 mutex_exit(&lfs_lock); 396 } 397 return 0; 398 } 399 400 /* 401 * If a vnode is bring cleaned, flush it out before we try to 402 * reuse it. This prevents the cleaner from writing files twice 403 * in the same partial segment, causing an accounting underflow. 404 */ 405 if (ap->a_flags & FSYNC_RECLAIM && ip->i_flags & IN_CLEANING) { 406 lfs_vflush(vp); 407 } 408 409 wait = (ap->a_flags & FSYNC_WAIT); 410 do { 411 mutex_enter(vp->v_interlock); 412 error = VOP_PUTPAGES(vp, trunc_page(ap->a_offlo), 413 round_page(ap->a_offhi), 414 PGO_CLEANIT | (wait ? PGO_SYNCIO : 0)); 415 if (error == EAGAIN) { 416 mutex_enter(&lfs_lock); 417 mtsleep(&fs->lfs_avail, PCATCH | PUSER, "lfs_fsync", 418 hz / 100 + 1, &lfs_lock); 419 mutex_exit(&lfs_lock); 420 } 421 } while (error == EAGAIN); 422 if (error) 423 return error; 424 425 if ((ap->a_flags & FSYNC_DATAONLY) == 0) 426 error = lfs_update(vp, NULL, NULL, wait ? UPDATE_WAIT : 0); 427 428 if (error == 0 && ap->a_flags & FSYNC_CACHE) { 429 int l = 0; 430 error = VOP_IOCTL(ip->i_devvp, DIOCCACHESYNC, &l, FWRITE, 431 curlwp->l_cred); 432 } 433 if (wait && !VPISEMPTY(vp)) 434 LFS_SET_UINO(ip, IN_MODIFIED); 435 436 return error; 437 } 438 439 /* 440 * Take IN_ADIROP off, then call ulfs_inactive. 441 */ 442 int 443 lfs_inactive(void *v) 444 { 445 struct vop_inactive_args /* { 446 struct vnode *a_vp; 447 } */ *ap = v; 448 449 lfs_unmark_vnode(ap->a_vp); 450 451 /* 452 * The Ifile is only ever inactivated on unmount. 453 * Streamline this process by not giving it more dirty blocks. 454 */ 455 if (VTOI(ap->a_vp)->i_number == LFS_IFILE_INUM) { 456 mutex_enter(&lfs_lock); 457 LFS_CLR_UINO(VTOI(ap->a_vp), IN_ALLMOD); 458 mutex_exit(&lfs_lock); 459 VOP_UNLOCK(ap->a_vp); 460 return 0; 461 } 462 463 #ifdef DEBUG 464 /* 465 * This might happen on unmount. 466 * XXX If it happens at any other time, it should be a panic. 467 */ 468 if (ap->a_vp->v_uflag & VU_DIROP) { 469 struct inode *ip = VTOI(ap->a_vp); 470 printf("lfs_inactive: inactivating VU_DIROP? ino = %d\n", (int)ip->i_number); 471 } 472 #endif /* DIAGNOSTIC */ 473 474 return ulfs_inactive(v); 475 } 476 477 int 478 lfs_set_dirop(struct vnode *dvp, struct vnode *vp) 479 { 480 struct lfs *fs; 481 int error; 482 483 KASSERT(VOP_ISLOCKED(dvp)); 484 KASSERT(vp == NULL || VOP_ISLOCKED(vp)); 485 486 fs = VTOI(dvp)->i_lfs; 487 488 ASSERT_NO_SEGLOCK(fs); 489 /* 490 * LFS_NRESERVE calculates direct and indirect blocks as well 491 * as an inode block; an overestimate in most cases. 492 */ 493 if ((error = lfs_reserve(fs, dvp, vp, LFS_NRESERVE(fs))) != 0) 494 return (error); 495 496 restart: 497 mutex_enter(&lfs_lock); 498 if (fs->lfs_dirops == 0) { 499 mutex_exit(&lfs_lock); 500 lfs_check(dvp, LFS_UNUSED_LBN, 0); 501 mutex_enter(&lfs_lock); 502 } 503 while (fs->lfs_writer) { 504 error = mtsleep(&fs->lfs_dirops, (PRIBIO + 1) | PCATCH, 505 "lfs_sdirop", 0, &lfs_lock); 506 if (error == EINTR) { 507 mutex_exit(&lfs_lock); 508 goto unreserve; 509 } 510 } 511 if (lfs_dirvcount > LFS_MAX_DIROP && fs->lfs_dirops == 0) { 512 wakeup(&lfs_writer_daemon); 513 mutex_exit(&lfs_lock); 514 preempt(); 515 goto restart; 516 } 517 518 if (lfs_dirvcount > LFS_MAX_DIROP) { 519 DLOG((DLOG_DIROP, "lfs_set_dirop: sleeping with dirops=%d, " 520 "dirvcount=%d\n", fs->lfs_dirops, lfs_dirvcount)); 521 if ((error = mtsleep(&lfs_dirvcount, 522 PCATCH | PUSER | PNORELOCK, "lfs_maxdirop", 0, 523 &lfs_lock)) != 0) { 524 goto unreserve; 525 } 526 goto restart; 527 } 528 529 ++fs->lfs_dirops; 530 /* fs->lfs_doifile = 1; */ /* XXX why? --ks */ 531 mutex_exit(&lfs_lock); 532 533 /* Hold a reference so SET_ENDOP will be happy */ 534 vref(dvp); 535 if (vp) { 536 vref(vp); 537 MARK_VNODE(vp); 538 } 539 540 MARK_VNODE(dvp); 541 return 0; 542 543 unreserve: 544 lfs_reserve(fs, dvp, vp, -LFS_NRESERVE(fs)); 545 return error; 546 } 547 548 /* 549 * Opposite of lfs_set_dirop... mostly. For now at least must call 550 * UNMARK_VNODE(dvp) explicitly first. (XXX: clean that up) 551 */ 552 void 553 lfs_unset_dirop(struct lfs *fs, struct vnode *dvp, const char *str) 554 { 555 mutex_enter(&lfs_lock); 556 --fs->lfs_dirops; 557 if (!fs->lfs_dirops) { 558 if (fs->lfs_nadirop) { 559 panic("lfs_unset_dirop: %s: no dirops but " 560 " nadirop=%d", str, 561 fs->lfs_nadirop); 562 } 563 wakeup(&fs->lfs_writer); 564 mutex_exit(&lfs_lock); 565 lfs_check(dvp, LFS_UNUSED_LBN, 0); 566 } else { 567 mutex_exit(&lfs_lock); 568 } 569 lfs_reserve(fs, dvp, NULL, -LFS_NRESERVE(fs)); 570 } 571 572 void 573 lfs_mark_vnode(struct vnode *vp) 574 { 575 struct inode *ip = VTOI(vp); 576 struct lfs *fs = ip->i_lfs; 577 578 mutex_enter(&lfs_lock); 579 if (!(ip->i_flag & IN_ADIROP)) { 580 if (!(vp->v_uflag & VU_DIROP)) { 581 mutex_exit(&lfs_lock); 582 mutex_enter(vp->v_interlock); 583 if (lfs_vref(vp) != 0) 584 panic("lfs_mark_vnode: could not vref"); 585 mutex_enter(&lfs_lock); 586 ++lfs_dirvcount; 587 ++fs->lfs_dirvcount; 588 TAILQ_INSERT_TAIL(&fs->lfs_dchainhd, ip, i_lfs_dchain); 589 vp->v_uflag |= VU_DIROP; 590 } 591 ++fs->lfs_nadirop; 592 ip->i_flag &= ~IN_CDIROP; 593 ip->i_flag |= IN_ADIROP; 594 } else 595 KASSERT(vp->v_uflag & VU_DIROP); 596 mutex_exit(&lfs_lock); 597 } 598 599 void 600 lfs_unmark_vnode(struct vnode *vp) 601 { 602 struct inode *ip = VTOI(vp); 603 604 mutex_enter(&lfs_lock); 605 if (ip && (ip->i_flag & IN_ADIROP)) { 606 KASSERT(vp->v_uflag & VU_DIROP); 607 --ip->i_lfs->lfs_nadirop; 608 ip->i_flag &= ~IN_ADIROP; 609 } 610 mutex_exit(&lfs_lock); 611 } 612 613 int 614 lfs_symlink(void *v) 615 { 616 struct vop_symlink_v3_args /* { 617 struct vnode *a_dvp; 618 struct vnode **a_vpp; 619 struct componentname *a_cnp; 620 struct vattr *a_vap; 621 char *a_target; 622 } */ *ap = v; 623 struct lfs *fs; 624 struct vnode *dvp, **vpp; 625 struct inode *ip; 626 struct ulfs_lookup_results *ulr; 627 ssize_t len; /* XXX should be size_t */ 628 int error; 629 630 dvp = ap->a_dvp; 631 vpp = ap->a_vpp; 632 633 KASSERT(vpp != NULL); 634 KASSERT(*vpp == NULL); 635 636 /* XXX should handle this material another way */ 637 ulr = &VTOI(ap->a_dvp)->i_crap; 638 ULFS_CHECK_CRAPCOUNTER(VTOI(ap->a_dvp)); 639 640 fs = VFSTOULFS(dvp->v_mount)->um_lfs; 641 ASSERT_NO_SEGLOCK(fs); 642 if (fs->lfs_ronly) { 643 return EROFS; 644 } 645 646 /* 647 * Get a new vnode *before* adjusting the dirop count, to 648 * avoid a deadlock in getnewvnode(), if we have a stacked 649 * filesystem mounted on top of us. 650 * 651 * NB: this means we have to destroy the new vnode on error. 652 */ 653 654 error = getnewvnode(VT_LFS, dvp->v_mount, lfs_vnodeop_p, NULL, vpp); 655 if (error) { 656 DLOG((DLOG_ALLOC, "lfs_mkdir: dvp %p error %d\n", dvp, error)); 657 return error; 658 } 659 KASSERT(*vpp != NULL); 660 661 error = lfs_set_dirop(dvp, NULL); 662 if (error) { 663 ungetnewvnode(*vpp); 664 *vpp = NULL; 665 return error; 666 } 667 668 fstrans_start(dvp->v_mount, FSTRANS_SHARED); 669 error = ulfs_makeinode(LFS_IFLNK | ap->a_vap->va_mode, dvp, ulr, 670 vpp, ap->a_cnp); 671 if (error) { 672 goto out; 673 } 674 675 VN_KNOTE(ap->a_dvp, NOTE_WRITE); 676 ip = VTOI(*vpp); 677 678 len = strlen(ap->a_target); 679 if (len < ip->i_lfs->um_maxsymlinklen) { 680 memcpy((char *)SHORTLINK(ip), ap->a_target, len); 681 ip->i_size = len; 682 DIP_ASSIGN(ip, size, len); 683 uvm_vnp_setsize(*vpp, ip->i_size); 684 ip->i_flag |= IN_CHANGE | IN_UPDATE; 685 if ((*vpp)->v_mount->mnt_flag & MNT_RELATIME) 686 ip->i_flag |= IN_ACCESS; 687 } else { 688 error = vn_rdwr(UIO_WRITE, *vpp, ap->a_target, len, (off_t)0, 689 UIO_SYSSPACE, IO_NODELOCKED | IO_JOURNALLOCKED, 690 ap->a_cnp->cn_cred, NULL, NULL); 691 } 692 693 VOP_UNLOCK(*vpp); 694 if (error) 695 vrele(*vpp); 696 697 out: 698 fstrans_done(dvp->v_mount); 699 700 UNMARK_VNODE(dvp); 701 /* XXX: is it even possible for the symlink to get MARK'd? */ 702 UNMARK_VNODE(*vpp); 703 if (!((*vpp)->v_uflag & VU_DIROP)) { 704 KASSERT(error != 0); 705 ungetnewvnode(*vpp); 706 *vpp = NULL; 707 } 708 else { 709 KASSERT(error == 0); 710 } 711 lfs_unset_dirop(fs, dvp, "symlink"); 712 713 vrele(dvp); 714 return (error); 715 } 716 717 int 718 lfs_mknod(void *v) 719 { 720 struct vop_mknod_v3_args /* { 721 struct vnode *a_dvp; 722 struct vnode **a_vpp; 723 struct componentname *a_cnp; 724 struct vattr *a_vap; 725 } */ *ap = v; 726 struct lfs *fs; 727 struct vnode *dvp, **vpp; 728 struct vattr *vap; 729 struct inode *ip; 730 int error; 731 struct mount *mp; 732 ino_t ino; 733 struct ulfs_lookup_results *ulr; 734 735 dvp = ap->a_dvp; 736 vpp = ap->a_vpp; 737 vap = ap->a_vap; 738 739 KASSERT(vpp != NULL); 740 KASSERT(*vpp == NULL); 741 742 /* XXX should handle this material another way */ 743 ulr = &VTOI(dvp)->i_crap; 744 ULFS_CHECK_CRAPCOUNTER(VTOI(dvp)); 745 746 fs = VFSTOULFS(dvp->v_mount)->um_lfs; 747 ASSERT_NO_SEGLOCK(fs); 748 if (fs->lfs_ronly) { 749 return EROFS; 750 } 751 752 /* 753 * Get a new vnode *before* adjusting the dirop count, to 754 * avoid a deadlock in getnewvnode(), if we have a stacked 755 * filesystem mounted on top of us. 756 * 757 * NB: this means we have to destroy the new vnode on error. 758 */ 759 760 error = getnewvnode(VT_LFS, dvp->v_mount, lfs_vnodeop_p, NULL, vpp); 761 if (error) { 762 DLOG((DLOG_ALLOC, "lfs_mknod: dvp %p error %d\n", dvp, error)); 763 return error; 764 } 765 KASSERT(*vpp != NULL); 766 767 error = lfs_set_dirop(dvp, NULL); 768 if (error) { 769 ungetnewvnode(*vpp); 770 *vpp = NULL; 771 return error; 772 } 773 774 fstrans_start(ap->a_dvp->v_mount, FSTRANS_SHARED); 775 error = ulfs_makeinode(MAKEIMODE(vap->va_type, vap->va_mode), 776 dvp, ulr, vpp, ap->a_cnp); 777 778 /* Either way we're done with the dirop at this point */ 779 UNMARK_VNODE(dvp); 780 UNMARK_VNODE(*vpp); 781 if (!((*vpp)->v_uflag & VU_DIROP)) { 782 KASSERT(error != 0); 783 ungetnewvnode(*vpp); 784 *vpp = NULL; 785 } 786 else { 787 KASSERT(error == 0); 788 } 789 lfs_unset_dirop(fs, dvp, "mknod"); 790 /* 791 * XXX this is where this used to be (though inside some evil 792 * macros) but it clearly should be moved further down. 793 * - dholland 20140515 794 */ 795 vrele(dvp); 796 797 if (error) { 798 fstrans_done(ap->a_dvp->v_mount); 799 *vpp = NULL; 800 return (error); 801 } 802 803 VN_KNOTE(dvp, NOTE_WRITE); 804 ip = VTOI(*vpp); 805 mp = (*vpp)->v_mount; 806 ino = ip->i_number; 807 ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE; 808 if (vap->va_rdev != VNOVAL) { 809 struct ulfsmount *ump = ip->i_ump; 810 KASSERT(fs == ip->i_lfs); 811 /* 812 * Want to be able to use this to make badblock 813 * inodes, so don't truncate the dev number. 814 */ 815 if (ump->um_fstype == ULFS1) 816 ip->i_ffs1_rdev = ulfs_rw32(vap->va_rdev, 817 ULFS_MPNEEDSWAP(fs)); 818 else 819 ip->i_ffs2_rdev = ulfs_rw64(vap->va_rdev, 820 ULFS_MPNEEDSWAP(fs)); 821 } 822 823 /* 824 * Call fsync to write the vnode so that we don't have to deal with 825 * flushing it when it's marked VU_DIROP or reclaiming. 826 * 827 * XXX KS - If we can't flush we also can't call vgone(), so must 828 * return. But, that leaves this vnode in limbo, also not good. 829 * Can this ever happen (barring hardware failure)? 830 */ 831 if ((error = VOP_FSYNC(*vpp, NOCRED, FSYNC_WAIT, 0, 0)) != 0) { 832 panic("lfs_mknod: couldn't fsync (ino %llu)", 833 (unsigned long long)ino); 834 /* return (error); */ 835 } 836 /* 837 * Remove vnode so that it will be reloaded by VFS_VGET and 838 * checked to see if it is an alias of an existing entry in 839 * the inode cache. 840 */ 841 /* Used to be vput, but that causes us to call VOP_INACTIVE twice. */ 842 843 (*vpp)->v_type = VNON; 844 VOP_UNLOCK(*vpp); 845 vgone(*vpp); 846 error = VFS_VGET(mp, ino, vpp); 847 848 fstrans_done(ap->a_dvp->v_mount); 849 if (error != 0) { 850 *vpp = NULL; 851 return (error); 852 } 853 VOP_UNLOCK(*vpp); 854 return (0); 855 } 856 857 /* 858 * Create a regular file 859 */ 860 int 861 ulfs_create(void *v) 862 { 863 struct vop_create_v3_args /* { 864 struct vnode *a_dvp; 865 struct vnode **a_vpp; 866 struct componentname *a_cnp; 867 struct vattr *a_vap; 868 } */ *ap = v; 869 int error; 870 struct vnode *dvp = ap->a_dvp; 871 struct ulfs_lookup_results *ulr; 872 873 /* XXX should handle this material another way */ 874 ulr = &VTOI(dvp)->i_crap; 875 ULFS_CHECK_CRAPCOUNTER(VTOI(dvp)); 876 877 fstrans_start(dvp->v_mount, FSTRANS_SHARED); 878 error = 879 ulfs_makeinode(MAKEIMODE(ap->a_vap->va_type, ap->a_vap->va_mode), 880 dvp, ulr, ap->a_vpp, ap->a_cnp); 881 if (error) { 882 fstrans_done(dvp->v_mount); 883 return (error); 884 } 885 fstrans_done(dvp->v_mount); 886 VN_KNOTE(dvp, NOTE_WRITE); 887 VOP_UNLOCK(*ap->a_vpp); 888 return (0); 889 } 890 891 int 892 lfs_create(void *v) 893 { 894 struct vop_create_v3_args /* { 895 struct vnode *a_dvp; 896 struct vnode **a_vpp; 897 struct componentname *a_cnp; 898 struct vattr *a_vap; 899 } */ *ap = v; 900 struct lfs *fs; 901 struct vnode *dvp, **vpp; 902 int error; 903 904 dvp = ap->a_dvp; 905 vpp = ap->a_vpp; 906 907 KASSERT(vpp != NULL); 908 KASSERT(*vpp == NULL); 909 910 fs = VFSTOULFS(dvp->v_mount)->um_lfs; 911 ASSERT_NO_SEGLOCK(fs); 912 if (fs->lfs_ronly) { 913 return EROFS; 914 } 915 916 /* 917 * Get a new vnode *before* adjusting the dirop count, to 918 * avoid a deadlock in getnewvnode(), if we have a stacked 919 * filesystem mounted on top of us. 920 * 921 * NB: this means we have to destroy the new vnode on error. 922 */ 923 924 error = getnewvnode(VT_LFS, dvp->v_mount, lfs_vnodeop_p, NULL, vpp); 925 if (error) { 926 DLOG((DLOG_ALLOC, "lfs_create: dvp %p error %d\n", dvp,error)); 927 return error; 928 } 929 error = lfs_set_dirop(dvp, NULL); 930 if (error) { 931 ungetnewvnode(*vpp); 932 *vpp = NULL; 933 return error; 934 } 935 936 error = ulfs_create(ap); 937 938 UNMARK_VNODE(dvp); 939 UNMARK_VNODE(*vpp); 940 if (!((*vpp)->v_uflag & VU_DIROP)) { 941 KASSERT(error != 0); 942 ungetnewvnode(*vpp); 943 *vpp = NULL; 944 } 945 else { 946 KASSERT(error == 0); 947 } 948 lfs_unset_dirop(fs, dvp, "create"); 949 950 vrele(dvp); 951 return (error); 952 } 953 954 int 955 lfs_mkdir(void *v) 956 { 957 struct vop_mkdir_v3_args /* { 958 struct vnode *a_dvp; 959 struct vnode **a_vpp; 960 struct componentname *a_cnp; 961 struct vattr *a_vap; 962 } */ *ap = v; 963 struct lfs *fs; 964 struct vnode *dvp, *tvp, **vpp; 965 struct inode *dp, *ip; 966 struct componentname *cnp; 967 struct vattr *vap; 968 struct ulfs_lookup_results *ulr; 969 struct buf *bp; 970 struct lfs_dirtemplate dirtemplate; 971 struct lfs_direct *newdir; 972 int dirblksiz; 973 int dmode; 974 int error; 975 976 dvp = ap->a_dvp; 977 tvp = NULL; 978 vpp = ap->a_vpp; 979 cnp = ap->a_cnp; 980 vap = ap->a_vap; 981 982 dp = VTOI(dvp); 983 ip = NULL; 984 985 KASSERT(vpp != NULL); 986 KASSERT(*vpp == NULL); 987 988 /* XXX should handle this material another way */ 989 ulr = &dp->i_crap; 990 ULFS_CHECK_CRAPCOUNTER(dp); 991 992 fs = VFSTOULFS(dvp->v_mount)->um_lfs; 993 ASSERT_NO_SEGLOCK(fs); 994 if (fs->lfs_ronly) { 995 return EROFS; 996 } 997 dirblksiz = fs->um_dirblksiz; 998 999 /* 1000 * Get a new vnode *before* adjusting the dirop count, to 1001 * avoid a deadlock in getnewvnode(), if we have a stacked 1002 * filesystem mounted on top of us. 1003 * 1004 * NB: this means we have to destroy the new vnode on error. 1005 */ 1006 1007 error = getnewvnode(VT_LFS, dvp->v_mount, lfs_vnodeop_p, NULL, vpp); 1008 if (error) { 1009 DLOG((DLOG_ALLOC, "lfs_mkdir: dvp %p error %d\n", dvp, error)); 1010 return error; 1011 } 1012 error = lfs_set_dirop(dvp, NULL); 1013 if (error) { 1014 ungetnewvnode(*vpp); 1015 *vpp = NULL; 1016 return error; 1017 } 1018 1019 fstrans_start(dvp->v_mount, FSTRANS_SHARED); 1020 1021 if ((nlink_t)dp->i_nlink >= LINK_MAX) { 1022 error = EMLINK; 1023 goto out; 1024 } 1025 1026 dmode = vap->va_mode & ACCESSPERMS; 1027 dmode |= LFS_IFDIR; 1028 /* 1029 * Must simulate part of ulfs_makeinode here to acquire the inode, 1030 * but not have it entered in the parent directory. The entry is 1031 * made later after writing "." and ".." entries. 1032 */ 1033 if ((error = lfs_valloc(dvp, dmode, cnp->cn_cred, vpp)) != 0) 1034 goto out; 1035 1036 tvp = *vpp; 1037 ip = VTOI(tvp); 1038 1039 ip->i_uid = kauth_cred_geteuid(cnp->cn_cred); 1040 DIP_ASSIGN(ip, uid, ip->i_uid); 1041 ip->i_gid = dp->i_gid; 1042 DIP_ASSIGN(ip, gid, ip->i_gid); 1043 #if defined(LFS_QUOTA) || defined(LFS_QUOTA2) 1044 if ((error = lfs_chkiq(ip, 1, cnp->cn_cred, 0))) { 1045 lfs_vfree(tvp, ip->i_number, dmode); 1046 fstrans_done(dvp->v_mount); 1047 vput(tvp); 1048 goto out2; 1049 } 1050 #endif 1051 ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE; 1052 ip->i_mode = dmode; 1053 DIP_ASSIGN(ip, mode, dmode); 1054 tvp->v_type = VDIR; /* Rest init'd in getnewvnode(). */ 1055 ip->i_nlink = 2; 1056 DIP_ASSIGN(ip, nlink, 2); 1057 if (cnp->cn_flags & ISWHITEOUT) { 1058 ip->i_flags |= UF_OPAQUE; 1059 DIP_ASSIGN(ip, flags, ip->i_flags); 1060 } 1061 1062 /* 1063 * Bump link count in parent directory to reflect work done below. 1064 */ 1065 dp->i_nlink++; 1066 DIP_ASSIGN(dp, nlink, dp->i_nlink); 1067 dp->i_flag |= IN_CHANGE; 1068 if ((error = lfs_update(dvp, NULL, NULL, UPDATE_DIROP)) != 0) 1069 goto bad; 1070 1071 /* 1072 * Initialize directory with "." and ".." from static template. 1073 */ 1074 dirtemplate = mastertemplate; 1075 dirtemplate.dotdot_reclen = dirblksiz - dirtemplate.dot_reclen; 1076 dirtemplate.dot_ino = ulfs_rw32(ip->i_number, ULFS_MPNEEDSWAP(fs)); 1077 dirtemplate.dotdot_ino = ulfs_rw32(dp->i_number, ULFS_MPNEEDSWAP(fs)); 1078 dirtemplate.dot_reclen = ulfs_rw16(dirtemplate.dot_reclen, 1079 ULFS_MPNEEDSWAP(fs)); 1080 dirtemplate.dotdot_reclen = ulfs_rw16(dirtemplate.dotdot_reclen, 1081 ULFS_MPNEEDSWAP(fs)); 1082 if (fs->um_maxsymlinklen <= 0) { 1083 #if BYTE_ORDER == LITTLE_ENDIAN 1084 if (ULFS_MPNEEDSWAP(fs) == 0) 1085 #else 1086 if (ULFS_MPNEEDSWAP(fs) != 0) 1087 #endif 1088 { 1089 dirtemplate.dot_type = dirtemplate.dot_namlen; 1090 dirtemplate.dotdot_type = dirtemplate.dotdot_namlen; 1091 dirtemplate.dot_namlen = dirtemplate.dotdot_namlen = 0; 1092 } else 1093 dirtemplate.dot_type = dirtemplate.dotdot_type = 0; 1094 } 1095 if ((error = lfs_balloc(tvp, (off_t)0, dirblksiz, cnp->cn_cred, 1096 B_CLRBUF, &bp)) != 0) 1097 goto bad; 1098 ip->i_size = dirblksiz; 1099 DIP_ASSIGN(ip, size, dirblksiz); 1100 ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE; 1101 uvm_vnp_setsize(tvp, ip->i_size); 1102 memcpy((void *)bp->b_data, (void *)&dirtemplate, sizeof dirtemplate); 1103 1104 /* 1105 * Directory set up; now install its entry in the parent directory. 1106 */ 1107 if ((error = VOP_BWRITE(bp->b_vp, bp)) != 0) 1108 goto bad; 1109 if ((error = lfs_update(tvp, NULL, NULL, UPDATE_DIROP)) != 0) { 1110 goto bad; 1111 } 1112 newdir = pool_cache_get(ulfs_direct_cache, PR_WAITOK); 1113 ulfs_makedirentry(ip, cnp, newdir); 1114 error = ulfs_direnter(dvp, ulr, tvp, newdir, cnp, bp); 1115 pool_cache_put(ulfs_direct_cache, newdir); 1116 bad: 1117 if (error == 0) { 1118 VN_KNOTE(dvp, NOTE_WRITE | NOTE_LINK); 1119 VOP_UNLOCK(tvp); 1120 } else { 1121 dp->i_nlink--; 1122 DIP_ASSIGN(dp, nlink, dp->i_nlink); 1123 dp->i_flag |= IN_CHANGE; 1124 /* 1125 * No need to do an explicit lfs_truncate here, vrele will 1126 * do this for us because we set the link count to 0. 1127 */ 1128 ip->i_nlink = 0; 1129 DIP_ASSIGN(ip, nlink, 0); 1130 ip->i_flag |= IN_CHANGE; 1131 /* If IN_ADIROP, account for it */ 1132 lfs_unmark_vnode(tvp); 1133 vput(tvp); 1134 } 1135 1136 out: 1137 fstrans_done(dvp->v_mount); 1138 #if defined(LFS_QUOTA) || defined(LFS_QUOTA2) 1139 out2: 1140 #endif 1141 1142 UNMARK_VNODE(dvp); 1143 UNMARK_VNODE(*vpp); 1144 if (!((*vpp)->v_uflag & VU_DIROP)) { 1145 KASSERT(error != 0); 1146 ungetnewvnode(*vpp); 1147 *vpp = NULL; 1148 } 1149 else { 1150 KASSERT(error == 0); 1151 } 1152 lfs_unset_dirop(fs, dvp, "mkdir"); 1153 1154 vrele(dvp); 1155 return (error); 1156 } 1157 1158 int 1159 lfs_remove(void *v) 1160 { 1161 struct vop_remove_args /* { 1162 struct vnode *a_dvp; 1163 struct vnode *a_vp; 1164 struct componentname *a_cnp; 1165 } */ *ap = v; 1166 struct vnode *dvp, *vp; 1167 struct inode *ip; 1168 int error; 1169 1170 dvp = ap->a_dvp; 1171 vp = ap->a_vp; 1172 ip = VTOI(vp); 1173 if ((error = lfs_set_dirop(dvp, vp)) != 0) { 1174 if (dvp == vp) 1175 vrele(vp); 1176 else 1177 vput(vp); 1178 vput(dvp); 1179 return error; 1180 } 1181 error = ulfs_remove(ap); 1182 if (ip->i_nlink == 0) 1183 lfs_orphan(ip->i_lfs, ip->i_number); 1184 1185 UNMARK_VNODE(dvp); 1186 if (ap->a_vp) { 1187 UNMARK_VNODE(ap->a_vp); 1188 } 1189 lfs_unset_dirop(ip->i_lfs, dvp, "remove"); 1190 vrele(dvp); 1191 if (ap->a_vp) { 1192 vrele(ap->a_vp); 1193 } 1194 1195 return (error); 1196 } 1197 1198 int 1199 lfs_rmdir(void *v) 1200 { 1201 struct vop_rmdir_args /* { 1202 struct vnodeop_desc *a_desc; 1203 struct vnode *a_dvp; 1204 struct vnode *a_vp; 1205 struct componentname *a_cnp; 1206 } */ *ap = v; 1207 struct vnode *vp; 1208 struct inode *ip; 1209 int error; 1210 1211 vp = ap->a_vp; 1212 ip = VTOI(vp); 1213 if ((error = lfs_set_dirop(ap->a_dvp, ap->a_vp)) != 0) { 1214 if (ap->a_dvp == vp) 1215 vrele(ap->a_dvp); 1216 else 1217 vput(ap->a_dvp); 1218 vput(vp); 1219 return error; 1220 } 1221 error = ulfs_rmdir(ap); 1222 if (ip->i_nlink == 0) 1223 lfs_orphan(ip->i_lfs, ip->i_number); 1224 1225 UNMARK_VNODE(ap->a_dvp); 1226 if (ap->a_vp) { 1227 UNMARK_VNODE(ap->a_vp); 1228 } 1229 lfs_unset_dirop(ip->i_lfs, ap->a_dvp, "rmdir"); 1230 vrele(ap->a_dvp); 1231 if (ap->a_vp) { 1232 vrele(ap->a_vp); 1233 } 1234 1235 return (error); 1236 } 1237 1238 int 1239 lfs_link(void *v) 1240 { 1241 struct vop_link_args /* { 1242 struct vnode *a_dvp; 1243 struct vnode *a_vp; 1244 struct componentname *a_cnp; 1245 } */ *ap = v; 1246 struct lfs *fs; 1247 struct vnode *dvp; 1248 int error; 1249 1250 dvp = ap->a_dvp; 1251 1252 fs = VFSTOULFS(dvp->v_mount)->um_lfs; 1253 ASSERT_NO_SEGLOCK(fs); 1254 if (fs->lfs_ronly) { 1255 return EROFS; 1256 } 1257 1258 error = lfs_set_dirop(dvp, NULL); 1259 if (error) { 1260 /* 1261 * XXX dholland 20140515 this was here before but must 1262 * be wrong. 1263 */ 1264 vput(dvp); 1265 1266 return error; 1267 } 1268 1269 error = ulfs_link(ap); 1270 1271 UNMARK_VNODE(dvp); 1272 lfs_unset_dirop(fs, dvp, "link"); 1273 vrele(dvp); 1274 1275 return (error); 1276 } 1277 1278 /* XXX hack to avoid calling ITIMES in getattr */ 1279 int 1280 lfs_getattr(void *v) 1281 { 1282 struct vop_getattr_args /* { 1283 struct vnode *a_vp; 1284 struct vattr *a_vap; 1285 kauth_cred_t a_cred; 1286 } */ *ap = v; 1287 struct vnode *vp = ap->a_vp; 1288 struct inode *ip = VTOI(vp); 1289 struct vattr *vap = ap->a_vap; 1290 struct lfs *fs = ip->i_lfs; 1291 1292 fstrans_start(vp->v_mount, FSTRANS_SHARED); 1293 /* 1294 * Copy from inode table 1295 */ 1296 vap->va_fsid = ip->i_dev; 1297 vap->va_fileid = ip->i_number; 1298 vap->va_mode = ip->i_mode & ~LFS_IFMT; 1299 vap->va_nlink = ip->i_nlink; 1300 vap->va_uid = ip->i_uid; 1301 vap->va_gid = ip->i_gid; 1302 vap->va_rdev = (dev_t)ip->i_ffs1_rdev; 1303 vap->va_size = vp->v_size; 1304 vap->va_atime.tv_sec = ip->i_ffs1_atime; 1305 vap->va_atime.tv_nsec = ip->i_ffs1_atimensec; 1306 vap->va_mtime.tv_sec = ip->i_ffs1_mtime; 1307 vap->va_mtime.tv_nsec = ip->i_ffs1_mtimensec; 1308 vap->va_ctime.tv_sec = ip->i_ffs1_ctime; 1309 vap->va_ctime.tv_nsec = ip->i_ffs1_ctimensec; 1310 vap->va_flags = ip->i_flags; 1311 vap->va_gen = ip->i_gen; 1312 /* this doesn't belong here */ 1313 if (vp->v_type == VBLK) 1314 vap->va_blocksize = BLKDEV_IOSIZE; 1315 else if (vp->v_type == VCHR) 1316 vap->va_blocksize = MAXBSIZE; 1317 else 1318 vap->va_blocksize = vp->v_mount->mnt_stat.f_iosize; 1319 vap->va_bytes = lfs_fsbtob(fs, (u_quad_t)ip->i_lfs_effnblks); 1320 vap->va_type = vp->v_type; 1321 vap->va_filerev = ip->i_modrev; 1322 fstrans_done(vp->v_mount); 1323 return (0); 1324 } 1325 1326 /* 1327 * Check to make sure the inode blocks won't choke the buffer 1328 * cache, then call ulfs_setattr as usual. 1329 */ 1330 int 1331 lfs_setattr(void *v) 1332 { 1333 struct vop_setattr_args /* { 1334 struct vnode *a_vp; 1335 struct vattr *a_vap; 1336 kauth_cred_t a_cred; 1337 } */ *ap = v; 1338 struct vnode *vp = ap->a_vp; 1339 1340 lfs_check(vp, LFS_UNUSED_LBN, 0); 1341 return ulfs_setattr(v); 1342 } 1343 1344 /* 1345 * Release the block we hold on lfs_newseg wrapping. Called on file close, 1346 * or explicitly from LFCNWRAPGO. Called with the interlock held. 1347 */ 1348 static int 1349 lfs_wrapgo(struct lfs *fs, struct inode *ip, int waitfor) 1350 { 1351 if (fs->lfs_stoplwp != curlwp) 1352 return EBUSY; 1353 1354 fs->lfs_stoplwp = NULL; 1355 cv_signal(&fs->lfs_stopcv); 1356 1357 KASSERT(fs->lfs_nowrap > 0); 1358 if (fs->lfs_nowrap <= 0) { 1359 return 0; 1360 } 1361 1362 if (--fs->lfs_nowrap == 0) { 1363 log(LOG_NOTICE, "%s: re-enabled log wrap\n", fs->lfs_fsmnt); 1364 wakeup(&fs->lfs_wrappass); 1365 lfs_wakeup_cleaner(fs); 1366 } 1367 if (waitfor) { 1368 mtsleep(&fs->lfs_nextseg, PCATCH | PUSER, "segment", 1369 0, &lfs_lock); 1370 } 1371 1372 return 0; 1373 } 1374 1375 /* 1376 * Close called. 1377 * 1378 * Update the times on the inode. 1379 */ 1380 /* ARGSUSED */ 1381 int 1382 lfs_close(void *v) 1383 { 1384 struct vop_close_args /* { 1385 struct vnode *a_vp; 1386 int a_fflag; 1387 kauth_cred_t a_cred; 1388 } */ *ap = v; 1389 struct vnode *vp = ap->a_vp; 1390 struct inode *ip = VTOI(vp); 1391 struct lfs *fs = ip->i_lfs; 1392 1393 if ((ip->i_number == ULFS_ROOTINO || ip->i_number == LFS_IFILE_INUM) && 1394 fs->lfs_stoplwp == curlwp) { 1395 mutex_enter(&lfs_lock); 1396 log(LOG_NOTICE, "lfs_close: releasing log wrap control\n"); 1397 lfs_wrapgo(fs, ip, 0); 1398 mutex_exit(&lfs_lock); 1399 } 1400 1401 if (vp == ip->i_lfs->lfs_ivnode && 1402 vp->v_mount->mnt_iflag & IMNT_UNMOUNT) 1403 return 0; 1404 1405 fstrans_start(vp->v_mount, FSTRANS_SHARED); 1406 if (vp->v_usecount > 1 && vp != ip->i_lfs->lfs_ivnode) { 1407 LFS_ITIMES(ip, NULL, NULL, NULL); 1408 } 1409 fstrans_done(vp->v_mount); 1410 return (0); 1411 } 1412 1413 /* 1414 * Close wrapper for special devices. 1415 * 1416 * Update the times on the inode then do device close. 1417 */ 1418 int 1419 lfsspec_close(void *v) 1420 { 1421 struct vop_close_args /* { 1422 struct vnode *a_vp; 1423 int a_fflag; 1424 kauth_cred_t a_cred; 1425 } */ *ap = v; 1426 struct vnode *vp; 1427 struct inode *ip; 1428 1429 vp = ap->a_vp; 1430 ip = VTOI(vp); 1431 if (vp->v_usecount > 1) { 1432 LFS_ITIMES(ip, NULL, NULL, NULL); 1433 } 1434 return (VOCALL (spec_vnodeop_p, VOFFSET(vop_close), ap)); 1435 } 1436 1437 /* 1438 * Close wrapper for fifo's. 1439 * 1440 * Update the times on the inode then do device close. 1441 */ 1442 int 1443 lfsfifo_close(void *v) 1444 { 1445 struct vop_close_args /* { 1446 struct vnode *a_vp; 1447 int a_fflag; 1448 kauth_cred_ a_cred; 1449 } */ *ap = v; 1450 struct vnode *vp; 1451 struct inode *ip; 1452 1453 vp = ap->a_vp; 1454 ip = VTOI(vp); 1455 if (ap->a_vp->v_usecount > 1) { 1456 LFS_ITIMES(ip, NULL, NULL, NULL); 1457 } 1458 return (VOCALL (fifo_vnodeop_p, VOFFSET(vop_close), ap)); 1459 } 1460 1461 /* 1462 * Reclaim an inode so that it can be used for other purposes. 1463 */ 1464 1465 int 1466 lfs_reclaim(void *v) 1467 { 1468 struct vop_reclaim_args /* { 1469 struct vnode *a_vp; 1470 } */ *ap = v; 1471 struct vnode *vp = ap->a_vp; 1472 struct inode *ip = VTOI(vp); 1473 struct lfs *fs = ip->i_lfs; 1474 int error; 1475 1476 /* 1477 * The inode must be freed and updated before being removed 1478 * from its hash chain. Other threads trying to gain a hold 1479 * or lock on the inode will be stalled. 1480 */ 1481 if (ip->i_nlink <= 0 && (vp->v_mount->mnt_flag & MNT_RDONLY) == 0) 1482 lfs_vfree(vp, ip->i_number, ip->i_omode); 1483 1484 mutex_enter(&lfs_lock); 1485 LFS_CLR_UINO(ip, IN_ALLMOD); 1486 mutex_exit(&lfs_lock); 1487 if ((error = ulfs_reclaim(vp))) 1488 return (error); 1489 1490 /* 1491 * Take us off the paging and/or dirop queues if we were on them. 1492 * We shouldn't be on them. 1493 */ 1494 mutex_enter(&lfs_lock); 1495 if (ip->i_flags & IN_PAGING) { 1496 log(LOG_WARNING, "%s: reclaimed vnode is IN_PAGING\n", 1497 fs->lfs_fsmnt); 1498 ip->i_flags &= ~IN_PAGING; 1499 TAILQ_REMOVE(&fs->lfs_pchainhd, ip, i_lfs_pchain); 1500 } 1501 if (vp->v_uflag & VU_DIROP) { 1502 panic("reclaimed vnode is VU_DIROP"); 1503 vp->v_uflag &= ~VU_DIROP; 1504 TAILQ_REMOVE(&fs->lfs_dchainhd, ip, i_lfs_dchain); 1505 } 1506 mutex_exit(&lfs_lock); 1507 1508 pool_put(&lfs_dinode_pool, ip->i_din.ffs1_din); 1509 lfs_deregister_all(vp); 1510 pool_put(&lfs_inoext_pool, ip->inode_ext.lfs); 1511 ip->inode_ext.lfs = NULL; 1512 genfs_node_destroy(vp); 1513 pool_put(&lfs_inode_pool, vp->v_data); 1514 vp->v_data = NULL; 1515 return (0); 1516 } 1517 1518 /* 1519 * Read a block from a storage device. 1520 * 1521 * Calculate the logical to physical mapping if not done already, 1522 * then call the device strategy routine. 1523 * 1524 * In order to avoid reading blocks that are in the process of being 1525 * written by the cleaner---and hence are not mutexed by the normal 1526 * buffer cache / page cache mechanisms---check for collisions before 1527 * reading. 1528 * 1529 * We inline ulfs_strategy to make sure that the VOP_BMAP occurs *before* 1530 * the active cleaner test. 1531 * 1532 * XXX This code assumes that lfs_markv makes synchronous checkpoints. 1533 */ 1534 int 1535 lfs_strategy(void *v) 1536 { 1537 struct vop_strategy_args /* { 1538 struct vnode *a_vp; 1539 struct buf *a_bp; 1540 } */ *ap = v; 1541 struct buf *bp; 1542 struct lfs *fs; 1543 struct vnode *vp; 1544 struct inode *ip; 1545 daddr_t tbn; 1546 #define MAXLOOP 25 1547 int i, sn, error, slept, loopcount; 1548 1549 bp = ap->a_bp; 1550 vp = ap->a_vp; 1551 ip = VTOI(vp); 1552 fs = ip->i_lfs; 1553 1554 /* lfs uses its strategy routine only for read */ 1555 KASSERT(bp->b_flags & B_READ); 1556 1557 if (vp->v_type == VBLK || vp->v_type == VCHR) 1558 panic("lfs_strategy: spec"); 1559 KASSERT(bp->b_bcount != 0); 1560 if (bp->b_blkno == bp->b_lblkno) { 1561 error = VOP_BMAP(vp, bp->b_lblkno, NULL, &bp->b_blkno, 1562 NULL); 1563 if (error) { 1564 bp->b_error = error; 1565 bp->b_resid = bp->b_bcount; 1566 biodone(bp); 1567 return (error); 1568 } 1569 if ((long)bp->b_blkno == -1) /* no valid data */ 1570 clrbuf(bp); 1571 } 1572 if ((long)bp->b_blkno < 0) { /* block is not on disk */ 1573 bp->b_resid = bp->b_bcount; 1574 biodone(bp); 1575 return (0); 1576 } 1577 1578 slept = 1; 1579 loopcount = 0; 1580 mutex_enter(&lfs_lock); 1581 while (slept && fs->lfs_seglock) { 1582 mutex_exit(&lfs_lock); 1583 /* 1584 * Look through list of intervals. 1585 * There will only be intervals to look through 1586 * if the cleaner holds the seglock. 1587 * Since the cleaner is synchronous, we can trust 1588 * the list of intervals to be current. 1589 */ 1590 tbn = LFS_DBTOFSB(fs, bp->b_blkno); 1591 sn = lfs_dtosn(fs, tbn); 1592 slept = 0; 1593 for (i = 0; i < fs->lfs_cleanind; i++) { 1594 if (sn == lfs_dtosn(fs, fs->lfs_cleanint[i]) && 1595 tbn >= fs->lfs_cleanint[i]) { 1596 DLOG((DLOG_CLEAN, 1597 "lfs_strategy: ino %d lbn %" PRId64 1598 " ind %d sn %d fsb %" PRIx32 1599 " given sn %d fsb %" PRIx64 "\n", 1600 ip->i_number, bp->b_lblkno, i, 1601 lfs_dtosn(fs, fs->lfs_cleanint[i]), 1602 fs->lfs_cleanint[i], sn, tbn)); 1603 DLOG((DLOG_CLEAN, 1604 "lfs_strategy: sleeping on ino %d lbn %" 1605 PRId64 "\n", ip->i_number, bp->b_lblkno)); 1606 mutex_enter(&lfs_lock); 1607 if (LFS_SEGLOCK_HELD(fs) && fs->lfs_iocount) { 1608 /* 1609 * Cleaner can't wait for itself. 1610 * Instead, wait for the blocks 1611 * to be written to disk. 1612 * XXX we need pribio in the test 1613 * XXX here. 1614 */ 1615 mtsleep(&fs->lfs_iocount, 1616 (PRIBIO + 1) | PNORELOCK, 1617 "clean2", hz/10 + 1, 1618 &lfs_lock); 1619 slept = 1; 1620 ++loopcount; 1621 break; 1622 } else if (fs->lfs_seglock) { 1623 mtsleep(&fs->lfs_seglock, 1624 (PRIBIO + 1) | PNORELOCK, 1625 "clean1", 0, 1626 &lfs_lock); 1627 slept = 1; 1628 break; 1629 } 1630 mutex_exit(&lfs_lock); 1631 } 1632 } 1633 mutex_enter(&lfs_lock); 1634 if (loopcount > MAXLOOP) { 1635 printf("lfs_strategy: breaking out of clean2 loop\n"); 1636 break; 1637 } 1638 } 1639 mutex_exit(&lfs_lock); 1640 1641 vp = ip->i_devvp; 1642 return VOP_STRATEGY(vp, bp); 1643 } 1644 1645 /* 1646 * Inline lfs_segwrite/lfs_writevnodes, but just for dirops. 1647 * Technically this is a checkpoint (the on-disk state is valid) 1648 * even though we are leaving out all the file data. 1649 */ 1650 int 1651 lfs_flush_dirops(struct lfs *fs) 1652 { 1653 struct inode *ip, *nip; 1654 struct vnode *vp; 1655 extern int lfs_dostats; 1656 struct segment *sp; 1657 int flags = 0; 1658 int error = 0; 1659 1660 ASSERT_MAYBE_SEGLOCK(fs); 1661 KASSERT(fs->lfs_nadirop == 0); 1662 1663 if (fs->lfs_ronly) 1664 return EROFS; 1665 1666 mutex_enter(&lfs_lock); 1667 if (TAILQ_FIRST(&fs->lfs_dchainhd) == NULL) { 1668 mutex_exit(&lfs_lock); 1669 return 0; 1670 } else 1671 mutex_exit(&lfs_lock); 1672 1673 if (lfs_dostats) 1674 ++lfs_stats.flush_invoked; 1675 1676 lfs_imtime(fs); 1677 lfs_seglock(fs, flags); 1678 sp = fs->lfs_sp; 1679 1680 /* 1681 * lfs_writevnodes, optimized to get dirops out of the way. 1682 * Only write dirops, and don't flush files' pages, only 1683 * blocks from the directories. 1684 * 1685 * We don't need to vref these files because they are 1686 * dirops and so hold an extra reference until the 1687 * segunlock clears them of that status. 1688 * 1689 * We don't need to check for IN_ADIROP because we know that 1690 * no dirops are active. 1691 * 1692 */ 1693 mutex_enter(&lfs_lock); 1694 for (ip = TAILQ_FIRST(&fs->lfs_dchainhd); ip != NULL; ip = nip) { 1695 nip = TAILQ_NEXT(ip, i_lfs_dchain); 1696 mutex_exit(&lfs_lock); 1697 vp = ITOV(ip); 1698 mutex_enter(vp->v_interlock); 1699 1700 KASSERT((ip->i_flag & IN_ADIROP) == 0); 1701 KASSERT(vp->v_uflag & VU_DIROP); 1702 KASSERT(vdead_check(vp, VDEAD_NOWAIT) == 0); 1703 1704 /* 1705 * All writes to directories come from dirops; all 1706 * writes to files' direct blocks go through the page 1707 * cache, which we're not touching. Reads to files 1708 * and/or directories will not be affected by writing 1709 * directory blocks inodes and file inodes. So we don't 1710 * really need to lock. 1711 */ 1712 if (vdead_check(vp, VDEAD_NOWAIT) != 0) { 1713 mutex_exit(vp->v_interlock); 1714 mutex_enter(&lfs_lock); 1715 continue; 1716 } 1717 mutex_exit(vp->v_interlock); 1718 /* XXX see below 1719 * waslocked = VOP_ISLOCKED(vp); 1720 */ 1721 if (vp->v_type != VREG && 1722 ((ip->i_flag & IN_ALLMOD) || !VPISEMPTY(vp))) { 1723 error = lfs_writefile(fs, sp, vp); 1724 if (!VPISEMPTY(vp) && !WRITEINPROG(vp) && 1725 !(ip->i_flag & IN_ALLMOD)) { 1726 mutex_enter(&lfs_lock); 1727 LFS_SET_UINO(ip, IN_MODIFIED); 1728 mutex_exit(&lfs_lock); 1729 } 1730 if (error && (sp->seg_flags & SEGM_SINGLE)) { 1731 mutex_enter(&lfs_lock); 1732 error = EAGAIN; 1733 break; 1734 } 1735 } 1736 KDASSERT(ip->i_number != LFS_IFILE_INUM); 1737 error = lfs_writeinode(fs, sp, ip); 1738 mutex_enter(&lfs_lock); 1739 if (error && (sp->seg_flags & SEGM_SINGLE)) { 1740 error = EAGAIN; 1741 break; 1742 } 1743 1744 /* 1745 * We might need to update these inodes again, 1746 * for example, if they have data blocks to write. 1747 * Make sure that after this flush, they are still 1748 * marked IN_MODIFIED so that we don't forget to 1749 * write them. 1750 */ 1751 /* XXX only for non-directories? --KS */ 1752 LFS_SET_UINO(ip, IN_MODIFIED); 1753 } 1754 mutex_exit(&lfs_lock); 1755 /* We've written all the dirops there are */ 1756 ((SEGSUM *)(sp->segsum))->ss_flags &= ~(SS_CONT); 1757 lfs_finalize_fs_seguse(fs); 1758 (void) lfs_writeseg(fs, sp); 1759 lfs_segunlock(fs); 1760 1761 return error; 1762 } 1763 1764 /* 1765 * Flush all vnodes for which the pagedaemon has requested pageouts. 1766 * Skip over any files that are marked VU_DIROP (since lfs_flush_dirop() 1767 * has just run, this would be an error). If we have to skip a vnode 1768 * for any reason, just skip it; if we have to wait for the cleaner, 1769 * abort. The writer daemon will call us again later. 1770 */ 1771 int 1772 lfs_flush_pchain(struct lfs *fs) 1773 { 1774 struct inode *ip, *nip; 1775 struct vnode *vp; 1776 extern int lfs_dostats; 1777 struct segment *sp; 1778 int error, error2; 1779 1780 ASSERT_NO_SEGLOCK(fs); 1781 1782 if (fs->lfs_ronly) 1783 return EROFS; 1784 1785 mutex_enter(&lfs_lock); 1786 if (TAILQ_FIRST(&fs->lfs_pchainhd) == NULL) { 1787 mutex_exit(&lfs_lock); 1788 return 0; 1789 } else 1790 mutex_exit(&lfs_lock); 1791 1792 /* Get dirops out of the way */ 1793 if ((error = lfs_flush_dirops(fs)) != 0) 1794 return error; 1795 1796 if (lfs_dostats) 1797 ++lfs_stats.flush_invoked; 1798 1799 /* 1800 * Inline lfs_segwrite/lfs_writevnodes, but just for pageouts. 1801 */ 1802 lfs_imtime(fs); 1803 lfs_seglock(fs, 0); 1804 sp = fs->lfs_sp; 1805 1806 /* 1807 * lfs_writevnodes, optimized to clear pageout requests. 1808 * Only write non-dirop files that are in the pageout queue. 1809 * We're very conservative about what we write; we want to be 1810 * fast and async. 1811 */ 1812 mutex_enter(&lfs_lock); 1813 top: 1814 for (ip = TAILQ_FIRST(&fs->lfs_pchainhd); ip != NULL; ip = nip) { 1815 nip = TAILQ_NEXT(ip, i_lfs_pchain); 1816 vp = ITOV(ip); 1817 1818 if (!(ip->i_flags & IN_PAGING)) 1819 goto top; 1820 1821 mutex_enter(vp->v_interlock); 1822 if (vdead_check(vp, VDEAD_NOWAIT) != 0 || 1823 (vp->v_uflag & VU_DIROP) != 0) { 1824 mutex_exit(vp->v_interlock); 1825 continue; 1826 } 1827 if (vp->v_type != VREG) { 1828 mutex_exit(vp->v_interlock); 1829 continue; 1830 } 1831 if (lfs_vref(vp)) 1832 continue; 1833 mutex_exit(&lfs_lock); 1834 1835 if (vn_lock(vp, LK_EXCLUSIVE | LK_NOWAIT | LK_RETRY) != 0) { 1836 lfs_vunref(vp); 1837 mutex_enter(&lfs_lock); 1838 continue; 1839 } 1840 1841 error = lfs_writefile(fs, sp, vp); 1842 if (!VPISEMPTY(vp) && !WRITEINPROG(vp) && 1843 !(ip->i_flag & IN_ALLMOD)) { 1844 mutex_enter(&lfs_lock); 1845 LFS_SET_UINO(ip, IN_MODIFIED); 1846 mutex_exit(&lfs_lock); 1847 } 1848 KDASSERT(ip->i_number != LFS_IFILE_INUM); 1849 error2 = lfs_writeinode(fs, sp, ip); 1850 1851 VOP_UNLOCK(vp); 1852 lfs_vunref(vp); 1853 1854 if (error == EAGAIN || error2 == EAGAIN) { 1855 lfs_writeseg(fs, sp); 1856 mutex_enter(&lfs_lock); 1857 break; 1858 } 1859 mutex_enter(&lfs_lock); 1860 } 1861 mutex_exit(&lfs_lock); 1862 (void) lfs_writeseg(fs, sp); 1863 lfs_segunlock(fs); 1864 1865 return 0; 1866 } 1867 1868 /* 1869 * Provide a fcntl interface to sys_lfs_{segwait,bmapv,markv}. 1870 */ 1871 int 1872 lfs_fcntl(void *v) 1873 { 1874 struct vop_fcntl_args /* { 1875 struct vnode *a_vp; 1876 u_int a_command; 1877 void * a_data; 1878 int a_fflag; 1879 kauth_cred_t a_cred; 1880 } */ *ap = v; 1881 struct timeval tv; 1882 struct timeval *tvp; 1883 BLOCK_INFO *blkiov; 1884 CLEANERINFO *cip; 1885 SEGUSE *sup; 1886 int blkcnt, error; 1887 size_t fh_size; 1888 struct lfs_fcntl_markv blkvp; 1889 struct lwp *l; 1890 fsid_t *fsidp; 1891 struct lfs *fs; 1892 struct buf *bp; 1893 fhandle_t *fhp; 1894 daddr_t off; 1895 int oclean; 1896 1897 /* Only respect LFS fcntls on fs root or Ifile */ 1898 if (VTOI(ap->a_vp)->i_number != ULFS_ROOTINO && 1899 VTOI(ap->a_vp)->i_number != LFS_IFILE_INUM) { 1900 return ulfs_fcntl(v); 1901 } 1902 1903 /* Avoid locking a draining lock */ 1904 if (ap->a_vp->v_mount->mnt_iflag & IMNT_UNMOUNT) { 1905 return ESHUTDOWN; 1906 } 1907 1908 /* LFS control and monitoring fcntls are available only to root */ 1909 l = curlwp; 1910 if (((ap->a_command & 0xff00) >> 8) == 'L' && 1911 (error = kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_LFS, 1912 KAUTH_REQ_SYSTEM_LFS_FCNTL, NULL, NULL, NULL)) != 0) 1913 return (error); 1914 1915 fs = VTOI(ap->a_vp)->i_lfs; 1916 fsidp = &ap->a_vp->v_mount->mnt_stat.f_fsidx; 1917 1918 error = 0; 1919 switch ((int)ap->a_command) { 1920 case LFCNSEGWAITALL_COMPAT_50: 1921 case LFCNSEGWAITALL_COMPAT: 1922 fsidp = NULL; 1923 /* FALLSTHROUGH */ 1924 case LFCNSEGWAIT_COMPAT_50: 1925 case LFCNSEGWAIT_COMPAT: 1926 { 1927 struct timeval50 *tvp50 1928 = (struct timeval50 *)ap->a_data; 1929 timeval50_to_timeval(tvp50, &tv); 1930 tvp = &tv; 1931 } 1932 goto segwait_common; 1933 case LFCNSEGWAITALL: 1934 fsidp = NULL; 1935 /* FALLSTHROUGH */ 1936 case LFCNSEGWAIT: 1937 tvp = (struct timeval *)ap->a_data; 1938 segwait_common: 1939 mutex_enter(&lfs_lock); 1940 ++fs->lfs_sleepers; 1941 mutex_exit(&lfs_lock); 1942 1943 error = lfs_segwait(fsidp, tvp); 1944 1945 mutex_enter(&lfs_lock); 1946 if (--fs->lfs_sleepers == 0) 1947 wakeup(&fs->lfs_sleepers); 1948 mutex_exit(&lfs_lock); 1949 return error; 1950 1951 case LFCNBMAPV: 1952 case LFCNMARKV: 1953 blkvp = *(struct lfs_fcntl_markv *)ap->a_data; 1954 1955 blkcnt = blkvp.blkcnt; 1956 if ((u_int) blkcnt > LFS_MARKV_MAXBLKCNT) 1957 return (EINVAL); 1958 blkiov = lfs_malloc(fs, blkcnt * sizeof(BLOCK_INFO), LFS_NB_BLKIOV); 1959 if ((error = copyin(blkvp.blkiov, blkiov, 1960 blkcnt * sizeof(BLOCK_INFO))) != 0) { 1961 lfs_free(fs, blkiov, LFS_NB_BLKIOV); 1962 return error; 1963 } 1964 1965 mutex_enter(&lfs_lock); 1966 ++fs->lfs_sleepers; 1967 mutex_exit(&lfs_lock); 1968 if (ap->a_command == LFCNBMAPV) 1969 error = lfs_bmapv(l->l_proc, fsidp, blkiov, blkcnt); 1970 else /* LFCNMARKV */ 1971 error = lfs_markv(l->l_proc, fsidp, blkiov, blkcnt); 1972 if (error == 0) 1973 error = copyout(blkiov, blkvp.blkiov, 1974 blkcnt * sizeof(BLOCK_INFO)); 1975 mutex_enter(&lfs_lock); 1976 if (--fs->lfs_sleepers == 0) 1977 wakeup(&fs->lfs_sleepers); 1978 mutex_exit(&lfs_lock); 1979 lfs_free(fs, blkiov, LFS_NB_BLKIOV); 1980 return error; 1981 1982 case LFCNRECLAIM: 1983 /* 1984 * Flush dirops and write Ifile, allowing empty segments 1985 * to be immediately reclaimed. 1986 */ 1987 lfs_writer_enter(fs, "pndirop"); 1988 off = fs->lfs_offset; 1989 lfs_seglock(fs, SEGM_FORCE_CKP | SEGM_CKP); 1990 lfs_flush_dirops(fs); 1991 LFS_CLEANERINFO(cip, fs, bp); 1992 oclean = cip->clean; 1993 LFS_SYNC_CLEANERINFO(cip, fs, bp, 1); 1994 lfs_segwrite(ap->a_vp->v_mount, SEGM_FORCE_CKP); 1995 fs->lfs_sp->seg_flags |= SEGM_PROT; 1996 lfs_segunlock(fs); 1997 lfs_writer_leave(fs); 1998 1999 #ifdef DEBUG 2000 LFS_CLEANERINFO(cip, fs, bp); 2001 DLOG((DLOG_CLEAN, "lfs_fcntl: reclaim wrote %" PRId64 2002 " blocks, cleaned %" PRId32 " segments (activesb %d)\n", 2003 fs->lfs_offset - off, cip->clean - oclean, 2004 fs->lfs_activesb)); 2005 LFS_SYNC_CLEANERINFO(cip, fs, bp, 0); 2006 #else 2007 __USE(oclean); 2008 __USE(off); 2009 #endif 2010 2011 return 0; 2012 2013 case LFCNIFILEFH_COMPAT: 2014 /* Return the filehandle of the Ifile */ 2015 if ((error = kauth_authorize_system(l->l_cred, 2016 KAUTH_SYSTEM_FILEHANDLE, 0, NULL, NULL, NULL)) != 0) 2017 return (error); 2018 fhp = (struct fhandle *)ap->a_data; 2019 fhp->fh_fsid = *fsidp; 2020 fh_size = 16; /* former VFS_MAXFIDSIZ */ 2021 return lfs_vptofh(fs->lfs_ivnode, &(fhp->fh_fid), &fh_size); 2022 2023 case LFCNIFILEFH_COMPAT2: 2024 case LFCNIFILEFH: 2025 /* Return the filehandle of the Ifile */ 2026 fhp = (struct fhandle *)ap->a_data; 2027 fhp->fh_fsid = *fsidp; 2028 fh_size = sizeof(struct lfs_fhandle) - 2029 offsetof(fhandle_t, fh_fid); 2030 return lfs_vptofh(fs->lfs_ivnode, &(fhp->fh_fid), &fh_size); 2031 2032 case LFCNREWIND: 2033 /* Move lfs_offset to the lowest-numbered segment */ 2034 return lfs_rewind(fs, *(int *)ap->a_data); 2035 2036 case LFCNINVAL: 2037 /* Mark a segment SEGUSE_INVAL */ 2038 LFS_SEGENTRY(sup, fs, *(int *)ap->a_data, bp); 2039 if (sup->su_nbytes > 0) { 2040 brelse(bp, 0); 2041 lfs_unset_inval_all(fs); 2042 return EBUSY; 2043 } 2044 sup->su_flags |= SEGUSE_INVAL; 2045 VOP_BWRITE(bp->b_vp, bp); 2046 return 0; 2047 2048 case LFCNRESIZE: 2049 /* Resize the filesystem */ 2050 return lfs_resize_fs(fs, *(int *)ap->a_data); 2051 2052 case LFCNWRAPSTOP: 2053 case LFCNWRAPSTOP_COMPAT: 2054 /* 2055 * Hold lfs_newseg at segment 0; if requested, sleep until 2056 * the filesystem wraps around. To support external agents 2057 * (dump, fsck-based regression test) that need to look at 2058 * a snapshot of the filesystem, without necessarily 2059 * requiring that all fs activity stops. 2060 */ 2061 if (fs->lfs_stoplwp == curlwp) 2062 return EALREADY; 2063 2064 mutex_enter(&lfs_lock); 2065 while (fs->lfs_stoplwp != NULL) 2066 cv_wait(&fs->lfs_stopcv, &lfs_lock); 2067 fs->lfs_stoplwp = curlwp; 2068 if (fs->lfs_nowrap == 0) 2069 log(LOG_NOTICE, "%s: disabled log wrap\n", fs->lfs_fsmnt); 2070 ++fs->lfs_nowrap; 2071 if (*(int *)ap->a_data == 1 2072 || ap->a_command == LFCNWRAPSTOP_COMPAT) { 2073 log(LOG_NOTICE, "LFCNSTOPWRAP waiting for log wrap\n"); 2074 error = mtsleep(&fs->lfs_nowrap, PCATCH | PUSER, 2075 "segwrap", 0, &lfs_lock); 2076 log(LOG_NOTICE, "LFCNSTOPWRAP done waiting\n"); 2077 if (error) { 2078 lfs_wrapgo(fs, VTOI(ap->a_vp), 0); 2079 } 2080 } 2081 mutex_exit(&lfs_lock); 2082 return 0; 2083 2084 case LFCNWRAPGO: 2085 case LFCNWRAPGO_COMPAT: 2086 /* 2087 * Having done its work, the agent wakes up the writer. 2088 * If the argument is 1, it sleeps until a new segment 2089 * is selected. 2090 */ 2091 mutex_enter(&lfs_lock); 2092 error = lfs_wrapgo(fs, VTOI(ap->a_vp), 2093 ap->a_command == LFCNWRAPGO_COMPAT ? 1 : 2094 *((int *)ap->a_data)); 2095 mutex_exit(&lfs_lock); 2096 return error; 2097 2098 case LFCNWRAPPASS: 2099 if ((VTOI(ap->a_vp)->i_lfs_iflags & LFSI_WRAPWAIT)) 2100 return EALREADY; 2101 mutex_enter(&lfs_lock); 2102 if (fs->lfs_stoplwp != curlwp) { 2103 mutex_exit(&lfs_lock); 2104 return EALREADY; 2105 } 2106 if (fs->lfs_nowrap == 0) { 2107 mutex_exit(&lfs_lock); 2108 return EBUSY; 2109 } 2110 fs->lfs_wrappass = 1; 2111 wakeup(&fs->lfs_wrappass); 2112 /* Wait for the log to wrap, if asked */ 2113 if (*(int *)ap->a_data) { 2114 mutex_enter(ap->a_vp->v_interlock); 2115 if (lfs_vref(ap->a_vp) != 0) 2116 panic("LFCNWRAPPASS: lfs_vref failed"); 2117 VTOI(ap->a_vp)->i_lfs_iflags |= LFSI_WRAPWAIT; 2118 log(LOG_NOTICE, "LFCNPASS waiting for log wrap\n"); 2119 error = mtsleep(&fs->lfs_nowrap, PCATCH | PUSER, 2120 "segwrap", 0, &lfs_lock); 2121 log(LOG_NOTICE, "LFCNPASS done waiting\n"); 2122 VTOI(ap->a_vp)->i_lfs_iflags &= ~LFSI_WRAPWAIT; 2123 lfs_vunref(ap->a_vp); 2124 } 2125 mutex_exit(&lfs_lock); 2126 return error; 2127 2128 case LFCNWRAPSTATUS: 2129 mutex_enter(&lfs_lock); 2130 *(int *)ap->a_data = fs->lfs_wrapstatus; 2131 mutex_exit(&lfs_lock); 2132 return 0; 2133 2134 default: 2135 return ulfs_fcntl(v); 2136 } 2137 return 0; 2138 } 2139 2140 /* 2141 * Return the last logical file offset that should be written for this file 2142 * if we're doing a write that ends at "size". If writing, we need to know 2143 * about sizes on disk, i.e. fragments if there are any; if reading, we need 2144 * to know about entire blocks. 2145 */ 2146 void 2147 lfs_gop_size(struct vnode *vp, off_t size, off_t *eobp, int flags) 2148 { 2149 struct inode *ip = VTOI(vp); 2150 struct lfs *fs = ip->i_lfs; 2151 daddr_t olbn, nlbn; 2152 2153 olbn = lfs_lblkno(fs, ip->i_size); 2154 nlbn = lfs_lblkno(fs, size); 2155 if (!(flags & GOP_SIZE_MEM) && nlbn < ULFS_NDADDR && olbn <= nlbn) { 2156 *eobp = lfs_fragroundup(fs, size); 2157 } else { 2158 *eobp = lfs_blkroundup(fs, size); 2159 } 2160 } 2161 2162 #ifdef DEBUG 2163 void lfs_dump_vop(void *); 2164 2165 void 2166 lfs_dump_vop(void *v) 2167 { 2168 struct vop_putpages_args /* { 2169 struct vnode *a_vp; 2170 voff_t a_offlo; 2171 voff_t a_offhi; 2172 int a_flags; 2173 } */ *ap = v; 2174 2175 #ifdef DDB 2176 vfs_vnode_print(ap->a_vp, 0, printf); 2177 #endif 2178 lfs_dump_dinode(VTOI(ap->a_vp)->i_din.ffs1_din); 2179 } 2180 #endif 2181 2182 int 2183 lfs_mmap(void *v) 2184 { 2185 struct vop_mmap_args /* { 2186 const struct vnodeop_desc *a_desc; 2187 struct vnode *a_vp; 2188 vm_prot_t a_prot; 2189 kauth_cred_t a_cred; 2190 } */ *ap = v; 2191 2192 if (VTOI(ap->a_vp)->i_number == LFS_IFILE_INUM) 2193 return EOPNOTSUPP; 2194 return ulfs_mmap(v); 2195 } 2196 2197 static int 2198 lfs_openextattr(void *v) 2199 { 2200 struct vop_openextattr_args /* { 2201 struct vnode *a_vp; 2202 kauth_cred_t a_cred; 2203 struct proc *a_p; 2204 } */ *ap = v; 2205 struct inode *ip = VTOI(ap->a_vp); 2206 struct ulfsmount *ump = ip->i_ump; 2207 //struct lfs *fs = ip->i_lfs; 2208 2209 /* Not supported for ULFS1 file systems. */ 2210 if (ump->um_fstype == ULFS1) 2211 return (EOPNOTSUPP); 2212 2213 /* XXX Not implemented for ULFS2 file systems. */ 2214 return (EOPNOTSUPP); 2215 } 2216 2217 static int 2218 lfs_closeextattr(void *v) 2219 { 2220 struct vop_closeextattr_args /* { 2221 struct vnode *a_vp; 2222 int a_commit; 2223 kauth_cred_t a_cred; 2224 struct proc *a_p; 2225 } */ *ap = v; 2226 struct inode *ip = VTOI(ap->a_vp); 2227 struct ulfsmount *ump = ip->i_ump; 2228 //struct lfs *fs = ip->i_lfs; 2229 2230 /* Not supported for ULFS1 file systems. */ 2231 if (ump->um_fstype == ULFS1) 2232 return (EOPNOTSUPP); 2233 2234 /* XXX Not implemented for ULFS2 file systems. */ 2235 return (EOPNOTSUPP); 2236 } 2237 2238 static int 2239 lfs_getextattr(void *v) 2240 { 2241 struct vop_getextattr_args /* { 2242 struct vnode *a_vp; 2243 int a_attrnamespace; 2244 const char *a_name; 2245 struct uio *a_uio; 2246 size_t *a_size; 2247 kauth_cred_t a_cred; 2248 struct proc *a_p; 2249 } */ *ap = v; 2250 struct vnode *vp = ap->a_vp; 2251 struct inode *ip = VTOI(vp); 2252 struct ulfsmount *ump = ip->i_ump; 2253 //struct lfs *fs = ip->i_lfs; 2254 int error; 2255 2256 if (ump->um_fstype == ULFS1) { 2257 #ifdef LFS_EXTATTR 2258 fstrans_start(vp->v_mount, FSTRANS_SHARED); 2259 error = ulfs_getextattr(ap); 2260 fstrans_done(vp->v_mount); 2261 #else 2262 error = EOPNOTSUPP; 2263 #endif 2264 return error; 2265 } 2266 2267 /* XXX Not implemented for ULFS2 file systems. */ 2268 return (EOPNOTSUPP); 2269 } 2270 2271 static int 2272 lfs_setextattr(void *v) 2273 { 2274 struct vop_setextattr_args /* { 2275 struct vnode *a_vp; 2276 int a_attrnamespace; 2277 const char *a_name; 2278 struct uio *a_uio; 2279 kauth_cred_t a_cred; 2280 struct proc *a_p; 2281 } */ *ap = v; 2282 struct vnode *vp = ap->a_vp; 2283 struct inode *ip = VTOI(vp); 2284 struct ulfsmount *ump = ip->i_ump; 2285 //struct lfs *fs = ip->i_lfs; 2286 int error; 2287 2288 if (ump->um_fstype == ULFS1) { 2289 #ifdef LFS_EXTATTR 2290 fstrans_start(vp->v_mount, FSTRANS_SHARED); 2291 error = ulfs_setextattr(ap); 2292 fstrans_done(vp->v_mount); 2293 #else 2294 error = EOPNOTSUPP; 2295 #endif 2296 return error; 2297 } 2298 2299 /* XXX Not implemented for ULFS2 file systems. */ 2300 return (EOPNOTSUPP); 2301 } 2302 2303 static int 2304 lfs_listextattr(void *v) 2305 { 2306 struct vop_listextattr_args /* { 2307 struct vnode *a_vp; 2308 int a_attrnamespace; 2309 struct uio *a_uio; 2310 size_t *a_size; 2311 kauth_cred_t a_cred; 2312 struct proc *a_p; 2313 } */ *ap = v; 2314 struct vnode *vp = ap->a_vp; 2315 struct inode *ip = VTOI(vp); 2316 struct ulfsmount *ump = ip->i_ump; 2317 //struct lfs *fs = ip->i_lfs; 2318 int error; 2319 2320 if (ump->um_fstype == ULFS1) { 2321 #ifdef LFS_EXTATTR 2322 fstrans_start(vp->v_mount, FSTRANS_SHARED); 2323 error = ulfs_listextattr(ap); 2324 fstrans_done(vp->v_mount); 2325 #else 2326 error = EOPNOTSUPP; 2327 #endif 2328 return error; 2329 } 2330 2331 /* XXX Not implemented for ULFS2 file systems. */ 2332 return (EOPNOTSUPP); 2333 } 2334 2335 static int 2336 lfs_deleteextattr(void *v) 2337 { 2338 struct vop_deleteextattr_args /* { 2339 struct vnode *a_vp; 2340 int a_attrnamespace; 2341 kauth_cred_t a_cred; 2342 struct proc *a_p; 2343 } */ *ap = v; 2344 struct vnode *vp = ap->a_vp; 2345 struct inode *ip = VTOI(vp); 2346 struct ulfsmount *ump = ip->i_ump; 2347 //struct fs *fs = ip->i_lfs; 2348 int error; 2349 2350 if (ump->um_fstype == ULFS1) { 2351 #ifdef LFS_EXTATTR 2352 fstrans_start(vp->v_mount, FSTRANS_SHARED); 2353 error = ulfs_deleteextattr(ap); 2354 fstrans_done(vp->v_mount); 2355 #else 2356 error = EOPNOTSUPP; 2357 #endif 2358 return error; 2359 } 2360 2361 /* XXX Not implemented for ULFS2 file systems. */ 2362 return (EOPNOTSUPP); 2363 } 2364
Indexes created Mon Sep 29 21:09:56 GMT 2025