| 1 | /* $NetBSD: lfs_vnops.c,v 1.304 2016/07/13 16:26:26 maya 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@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 1.232 2016/05/19 18:32:03 riastradh 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 1.304 2016/07/13 16:26:26 maya 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_accessors.h> |
| 168 | #include <ufs/lfs/lfs_kernel.h> |
| 169 | #include <ufs/lfs/lfs_extern.h> |
| 170 | |
| 171 | extern pid_t lfs_writer_daemon; |
| 172 | int lfs_ignore_lazy_sync = 1; |
| 173 | |
| 174 | static int lfs_openextattr(void *v); |
| 175 | static int lfs_closeextattr(void *v); |
| 176 | static int lfs_getextattr(void *v); |
| 177 | static int lfs_setextattr(void *v); |
| 178 | static int lfs_listextattr(void *v); |
| 179 | static int lfs_deleteextattr(void *v); |
| 180 | |
| 181 | static int lfs_makeinode(struct vattr *vap, struct vnode *, |
| 182 | const struct ulfs_lookup_results *, |
| 183 | struct vnode **, struct componentname *); |
| 184 | |
| 185 | /* Global vfs data structures for lfs. */ |
| 186 | int (**lfs_vnodeop_p)(void *); |
| 187 | const struct vnodeopv_entry_desc lfs_vnodeop_entries[] = { |
| 188 | { &vop_default_desc, vn_default_error }, |
| 189 | { &vop_lookup_desc, ulfs_lookup }, /* lookup */ |
| 190 | { &vop_create_desc, lfs_create }, /* create */ |
| 191 | { &vop_whiteout_desc, ulfs_whiteout }, /* whiteout */ |
| 192 | { &vop_mknod_desc, lfs_mknod }, /* mknod */ |
| 193 | { &vop_open_desc, ulfs_open }, /* open */ |
| 194 | { &vop_close_desc, lfs_close }, /* close */ |
| 195 | { &vop_access_desc, ulfs_access }, /* access */ |
| 196 | { &vop_getattr_desc, lfs_getattr }, /* getattr */ |
| 197 | { &vop_setattr_desc, lfs_setattr }, /* setattr */ |
| 198 | { &vop_read_desc, lfs_read }, /* read */ |
| 199 | { &vop_write_desc, lfs_write }, /* write */ |
| 200 | { &vop_fallocate_desc, genfs_eopnotsupp }, /* fallocate */ |
| 201 | { &vop_fdiscard_desc, genfs_eopnotsupp }, /* fdiscard */ |
| 202 | { &vop_ioctl_desc, ulfs_ioctl }, /* ioctl */ |
| 203 | { &vop_fcntl_desc, lfs_fcntl }, /* fcntl */ |
| 204 | { &vop_poll_desc, ulfs_poll }, /* poll */ |
| 205 | { &vop_kqfilter_desc, genfs_kqfilter }, /* kqfilter */ |
| 206 | { &vop_revoke_desc, ulfs_revoke }, /* revoke */ |
| 207 | { &vop_mmap_desc, lfs_mmap }, /* mmap */ |
| 208 | { &vop_fsync_desc, lfs_fsync }, /* fsync */ |
| 209 | { &vop_seek_desc, ulfs_seek }, /* seek */ |
| 210 | { &vop_remove_desc, lfs_remove }, /* remove */ |
| 211 | { &vop_link_desc, lfs_link }, /* link */ |
| 212 | { &vop_rename_desc, lfs_rename }, /* rename */ |
| 213 | { &vop_mkdir_desc, lfs_mkdir }, /* mkdir */ |
| 214 | { &vop_rmdir_desc, lfs_rmdir }, /* rmdir */ |
| 215 | { &vop_symlink_desc, lfs_symlink }, /* symlink */ |
| 216 | { &vop_readdir_desc, ulfs_readdir }, /* readdir */ |
| 217 | { &vop_readlink_desc, ulfs_readlink }, /* readlink */ |
| 218 | { &vop_abortop_desc, ulfs_abortop }, /* abortop */ |
| 219 | { &vop_inactive_desc, lfs_inactive }, /* inactive */ |
| 220 | { &vop_reclaim_desc, lfs_reclaim }, /* reclaim */ |
| 221 | { &vop_lock_desc, ulfs_lock }, /* lock */ |
| 222 | { &vop_unlock_desc, ulfs_unlock }, /* unlock */ |
| 223 | { &vop_bmap_desc, ulfs_bmap }, /* bmap */ |
| 224 | { &vop_strategy_desc, lfs_strategy }, /* strategy */ |
| 225 | { &vop_print_desc, ulfs_print }, /* print */ |
| 226 | { &vop_islocked_desc, ulfs_islocked }, /* islocked */ |
| 227 | { &vop_pathconf_desc, ulfs_pathconf }, /* pathconf */ |
| 228 | { &vop_advlock_desc, ulfs_advlock }, /* advlock */ |
| 229 | { &vop_bwrite_desc, lfs_bwrite }, /* bwrite */ |
| 230 | { &vop_getpages_desc, lfs_getpages }, /* getpages */ |
| 231 | { &vop_putpages_desc, lfs_putpages }, /* putpages */ |
| 232 | { &vop_openextattr_desc, lfs_openextattr }, /* openextattr */ |
| 233 | { &vop_closeextattr_desc, lfs_closeextattr }, /* closeextattr */ |
| 234 | { &vop_getextattr_desc, lfs_getextattr }, /* getextattr */ |
| 235 | { &vop_setextattr_desc, lfs_setextattr }, /* setextattr */ |
| 236 | { &vop_listextattr_desc, lfs_listextattr }, /* listextattr */ |
| 237 | { &vop_deleteextattr_desc, lfs_deleteextattr }, /* deleteextattr */ |
| 238 | { NULL, NULL } |
| 239 | }; |
| 240 | const struct vnodeopv_desc lfs_vnodeop_opv_desc = |
| 241 | { &lfs_vnodeop_p, lfs_vnodeop_entries }; |
| 242 | |
| 243 | int (**lfs_specop_p)(void *); |
| 244 | const struct vnodeopv_entry_desc lfs_specop_entries[] = { |
| 245 | { &vop_default_desc, vn_default_error }, |
| 246 | { &vop_lookup_desc, spec_lookup }, /* lookup */ |
| 247 | { &vop_create_desc, spec_create }, /* create */ |
| 248 | { &vop_mknod_desc, spec_mknod }, /* mknod */ |
| 249 | { &vop_open_desc, spec_open }, /* open */ |
| 250 | { &vop_close_desc, lfsspec_close }, /* close */ |
| 251 | { &vop_access_desc, ulfs_access }, /* access */ |
| 252 | { &vop_getattr_desc, lfs_getattr }, /* getattr */ |
| 253 | { &vop_setattr_desc, lfs_setattr }, /* setattr */ |
| 254 | { &vop_read_desc, ulfsspec_read }, /* read */ |
| 255 | { &vop_write_desc, ulfsspec_write }, /* write */ |
| 256 | { &vop_fallocate_desc, spec_fallocate }, /* fallocate */ |
| 257 | { &vop_fdiscard_desc, spec_fdiscard }, /* fdiscard */ |
| 258 | { &vop_ioctl_desc, spec_ioctl }, /* ioctl */ |
| 259 | { &vop_fcntl_desc, ulfs_fcntl }, /* fcntl */ |
| 260 | { &vop_poll_desc, spec_poll }, /* poll */ |
| 261 | { &vop_kqfilter_desc, spec_kqfilter }, /* kqfilter */ |
| 262 | { &vop_revoke_desc, spec_revoke }, /* revoke */ |
| 263 | { &vop_mmap_desc, spec_mmap }, /* mmap */ |
| 264 | { &vop_fsync_desc, spec_fsync }, /* fsync */ |
| 265 | { &vop_seek_desc, spec_seek }, /* seek */ |
| 266 | { &vop_remove_desc, spec_remove }, /* remove */ |
| 267 | { &vop_link_desc, spec_link }, /* link */ |
| 268 | { &vop_rename_desc, spec_rename }, /* rename */ |
| 269 | { &vop_mkdir_desc, spec_mkdir }, /* mkdir */ |
| 270 | { &vop_rmdir_desc, spec_rmdir }, /* rmdir */ |
| 271 | { &vop_symlink_desc, spec_symlink }, /* symlink */ |
| 272 | { &vop_readdir_desc, spec_readdir }, /* readdir */ |
| 273 | { &vop_readlink_desc, spec_readlink }, /* readlink */ |
| 274 | { &vop_abortop_desc, spec_abortop }, /* abortop */ |
| 275 | { &vop_inactive_desc, lfs_inactive }, /* inactive */ |
| 276 | { &vop_reclaim_desc, lfs_reclaim }, /* reclaim */ |
| 277 | { &vop_lock_desc, ulfs_lock }, /* lock */ |
| 278 | { &vop_unlock_desc, ulfs_unlock }, /* unlock */ |
| 279 | { &vop_bmap_desc, spec_bmap }, /* bmap */ |
| 280 | { &vop_strategy_desc, spec_strategy }, /* strategy */ |
| 281 | { &vop_print_desc, ulfs_print }, /* print */ |
| 282 | { &vop_islocked_desc, ulfs_islocked }, /* islocked */ |
| 283 | { &vop_pathconf_desc, spec_pathconf }, /* pathconf */ |
| 284 | { &vop_advlock_desc, spec_advlock }, /* advlock */ |
| 285 | { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ |
| 286 | { &vop_getpages_desc, spec_getpages }, /* getpages */ |
| 287 | { &vop_putpages_desc, spec_putpages }, /* putpages */ |
| 288 | { &vop_openextattr_desc, lfs_openextattr }, /* openextattr */ |
| 289 | { &vop_closeextattr_desc, lfs_closeextattr }, /* closeextattr */ |
| 290 | { &vop_getextattr_desc, lfs_getextattr }, /* getextattr */ |
| 291 | { &vop_setextattr_desc, lfs_setextattr }, /* setextattr */ |
| 292 | { &vop_listextattr_desc, lfs_listextattr }, /* listextattr */ |
| 293 | { &vop_deleteextattr_desc, lfs_deleteextattr }, /* deleteextattr */ |
| 294 | { NULL, NULL } |
| 295 | }; |
| 296 | const struct vnodeopv_desc lfs_specop_opv_desc = |
| 297 | { &lfs_specop_p, lfs_specop_entries }; |
| 298 | |
| 299 | int (**lfs_fifoop_p)(void *); |
| 300 | const struct vnodeopv_entry_desc lfs_fifoop_entries[] = { |
| 301 | { &vop_default_desc, vn_default_error }, |
| 302 | { &vop_lookup_desc, vn_fifo_bypass }, /* lookup */ |
| 303 | { &vop_create_desc, vn_fifo_bypass }, /* create */ |
| 304 | { &vop_mknod_desc, vn_fifo_bypass }, /* mknod */ |
| 305 | { &vop_open_desc, vn_fifo_bypass }, /* open */ |
| 306 | { &vop_close_desc, lfsfifo_close }, /* close */ |
| 307 | { &vop_access_desc, ulfs_access }, /* access */ |
| 308 | { &vop_getattr_desc, lfs_getattr }, /* getattr */ |
| 309 | { &vop_setattr_desc, lfs_setattr }, /* setattr */ |
| 310 | { &vop_read_desc, ulfsfifo_read }, /* read */ |
| 311 | { &vop_write_desc, ulfsfifo_write }, /* write */ |
| 312 | { &vop_fallocate_desc, vn_fifo_bypass }, /* fallocate */ |
| 313 | { &vop_fdiscard_desc, vn_fifo_bypass }, /* fdiscard */ |
| 314 | { &vop_ioctl_desc, vn_fifo_bypass }, /* ioctl */ |
| 315 | { &vop_fcntl_desc, ulfs_fcntl }, /* fcntl */ |
| 316 | { &vop_poll_desc, vn_fifo_bypass }, /* poll */ |
| 317 | { &vop_kqfilter_desc, vn_fifo_bypass }, /* kqfilter */ |
| 318 | { &vop_revoke_desc, vn_fifo_bypass }, /* revoke */ |
| 319 | { &vop_mmap_desc, vn_fifo_bypass }, /* mmap */ |
| 320 | { &vop_fsync_desc, vn_fifo_bypass }, /* fsync */ |
| 321 | { &vop_seek_desc, vn_fifo_bypass }, /* seek */ |
| 322 | { &vop_remove_desc, vn_fifo_bypass }, /* remove */ |
| 323 | { &vop_link_desc, vn_fifo_bypass }, /* link */ |
| 324 | { &vop_rename_desc, vn_fifo_bypass }, /* rename */ |
| 325 | { &vop_mkdir_desc, vn_fifo_bypass }, /* mkdir */ |
| 326 | { &vop_rmdir_desc, vn_fifo_bypass }, /* rmdir */ |
| 327 | { &vop_symlink_desc, vn_fifo_bypass }, /* symlink */ |
| 328 | { &vop_readdir_desc, vn_fifo_bypass }, /* readdir */ |
| 329 | { &vop_readlink_desc, vn_fifo_bypass }, /* readlink */ |
| 330 | { &vop_abortop_desc, vn_fifo_bypass }, /* abortop */ |
| 331 | { &vop_inactive_desc, lfs_inactive }, /* inactive */ |
| 332 | { &vop_reclaim_desc, lfs_reclaim }, /* reclaim */ |
| 333 | { &vop_lock_desc, ulfs_lock }, /* lock */ |
| 334 | { &vop_unlock_desc, ulfs_unlock }, /* unlock */ |
| 335 | { &vop_bmap_desc, vn_fifo_bypass }, /* bmap */ |
| 336 | { &vop_strategy_desc, vn_fifo_bypass }, /* strategy */ |
| 337 | { &vop_print_desc, ulfs_print }, /* print */ |
| 338 | { &vop_islocked_desc, ulfs_islocked }, /* islocked */ |
| 339 | { &vop_pathconf_desc, vn_fifo_bypass }, /* pathconf */ |
| 340 | { &vop_advlock_desc, vn_fifo_bypass }, /* advlock */ |
| 341 | { &vop_bwrite_desc, lfs_bwrite }, /* bwrite */ |
| 342 | { &vop_putpages_desc, vn_fifo_bypass }, /* putpages */ |
| 343 | { &vop_openextattr_desc, lfs_openextattr }, /* openextattr */ |
| 344 | { &vop_closeextattr_desc, lfs_closeextattr }, /* closeextattr */ |
| 345 | { &vop_getextattr_desc, lfs_getextattr }, /* getextattr */ |
| 346 | { &vop_setextattr_desc, lfs_setextattr }, /* setextattr */ |
| 347 | { &vop_listextattr_desc, lfs_listextattr }, /* listextattr */ |
| 348 | { &vop_deleteextattr_desc, lfs_deleteextattr }, /* deleteextattr */ |
| 349 | { NULL, NULL } |
| 350 | }; |
| 351 | const struct vnodeopv_desc lfs_fifoop_opv_desc = |
| 352 | { &lfs_fifoop_p, lfs_fifoop_entries }; |
| 353 | |
| 354 | #define LFS_READWRITE |
| 355 | #include <ufs/lfs/ulfs_readwrite.c> |
| 356 | #undef LFS_READWRITE |
| 357 | |
| 358 | /* |
| 359 | * Allocate a new inode. |
| 360 | */ |
| 361 | static int |
| 362 | lfs_makeinode(struct vattr *vap, struct vnode *dvp, |
| 363 | const struct ulfs_lookup_results *ulr, |
| 364 | struct vnode **vpp, struct componentname *cnp) |
| 365 | { |
| 366 | struct inode *ip; |
| 367 | struct vnode *tvp; |
| 368 | int error; |
| 369 | |
| 370 | error = vcache_new(dvp->v_mount, dvp, vap, cnp->cn_cred, &tvp); |
| 371 | if (error) |
| 372 | return error; |
| 373 | error = vn_lock(tvp, LK_EXCLUSIVE); |
| 374 | if (error) { |
| 375 | vrele(tvp); |
| 376 | return error; |
| 377 | } |
| 378 | lfs_mark_vnode(tvp); |
| 379 | *vpp = tvp; |
| 380 | ip = VTOI(tvp); |
| 381 | ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE; |
| 382 | ip->i_nlink = 1; |
| 383 | DIP_ASSIGN(ip, nlink, 1); |
| 384 | |
| 385 | /* Authorize setting SGID if needed. */ |
| 386 | if (ip->i_mode & ISGID) { |
| 387 | error = kauth_authorize_vnode(cnp->cn_cred, KAUTH_VNODE_WRITE_SECURITY, |
| 388 | tvp, NULL, genfs_can_chmod(tvp->v_type, cnp->cn_cred, ip->i_uid, |
| 389 | ip->i_gid, MAKEIMODE(vap->va_type, vap->va_mode))); |
| 390 | if (error) { |
| 391 | ip->i_mode &= ~ISGID; |
| 392 | DIP_ASSIGN(ip, mode, ip->i_mode); |
| 393 | } |
| 394 | } |
| 395 | |
| 396 | if (cnp->cn_flags & ISWHITEOUT) { |
| 397 | ip->i_flags |= UF_OPAQUE; |
| 398 | DIP_ASSIGN(ip, flags, ip->i_flags); |
| 399 | } |
| 400 | |
| 401 | /* |
| 402 | * Make sure inode goes to disk before directory entry. |
| 403 | */ |
| 404 | if ((error = lfs_update(tvp, NULL, NULL, UPDATE_DIROP)) != 0) |
| 405 | goto bad; |
| 406 | error = ulfs_direnter(dvp, ulr, tvp, |
| 407 | cnp, ip->i_number, LFS_IFTODT(ip->i_mode), NULL); |
| 408 | if (error) |
| 409 | goto bad; |
| 410 | *vpp = tvp; |
| 411 | return (0); |
| 412 | |
| 413 | bad: |
| 414 | /* |
| 415 | * Write error occurred trying to update the inode |
| 416 | * or the directory so must deallocate the inode. |
| 417 | */ |
| 418 | ip->i_nlink = 0; |
| 419 | DIP_ASSIGN(ip, nlink, 0); |
| 420 | ip->i_flag |= IN_CHANGE; |
| 421 | /* If IN_ADIROP, account for it */ |
| 422 | lfs_unmark_vnode(tvp); |
| 423 | vput(tvp); |
| 424 | return (error); |
| 425 | } |
| 426 | |
| 427 | /* |
| 428 | * Synch an open file. |
| 429 | */ |
| 430 | /* ARGSUSED */ |
| 431 | int |
| 432 | lfs_fsync(void *v) |
| 433 | { |
| 434 | struct vop_fsync_args /* { |
| 435 | struct vnode *a_vp; |
| 436 | kauth_cred_t a_cred; |
| 437 | int a_flags; |
| 438 | off_t offlo; |
| 439 | off_t offhi; |
| 440 | } */ *ap = v; |
| 441 | struct vnode *vp = ap->a_vp; |
| 442 | int error, wait; |
| 443 | struct inode *ip = VTOI(vp); |
| 444 | struct lfs *fs = ip->i_lfs; |
| 445 | |
| 446 | /* If we're mounted read-only, don't try to sync. */ |
| 447 | if (fs->lfs_ronly) |
| 448 | return 0; |
| 449 | |
| 450 | /* If a removed vnode is being cleaned, no need to sync here. */ |
| 451 | if ((ap->a_flags & FSYNC_RECLAIM) != 0 && ip->i_mode == 0) |
| 452 | return 0; |
| 453 | |
| 454 | /* |
| 455 | * Trickle sync simply adds this vnode to the pager list, as if |
| 456 | * the pagedaemon had requested a pageout. |
| 457 | */ |
| 458 | if (ap->a_flags & FSYNC_LAZY) { |
| 459 | if (lfs_ignore_lazy_sync == 0) { |
| 460 | mutex_enter(&lfs_lock); |
| 461 | if (!(ip->i_flags & IN_PAGING)) { |
| 462 | ip->i_flags |= IN_PAGING; |
| 463 | TAILQ_INSERT_TAIL(&fs->lfs_pchainhd, ip, |
| 464 | i_lfs_pchain); |
| 465 | } |
| 466 | wakeup(&lfs_writer_daemon); |
| 467 | mutex_exit(&lfs_lock); |
| 468 | } |
| 469 | return 0; |
| 470 | } |
| 471 | |
| 472 | /* |
| 473 | * If a vnode is bring cleaned, flush it out before we try to |
| 474 | * reuse it. This prevents the cleaner from writing files twice |
| 475 | * in the same partial segment, causing an accounting underflow. |
| 476 | */ |
| 477 | if (ap->a_flags & FSYNC_RECLAIM && ip->i_flags & IN_CLEANING) { |
| 478 | lfs_vflush(vp); |
| 479 | } |
| 480 | |
| 481 | wait = (ap->a_flags & FSYNC_WAIT); |
| 482 | do { |
| 483 | mutex_enter(vp->v_interlock); |
| 484 | error = VOP_PUTPAGES(vp, trunc_page(ap->a_offlo), |
| 485 | round_page(ap->a_offhi), |
| 486 | PGO_CLEANIT | (wait ? PGO_SYNCIO : 0)); |
| 487 | if (error == EAGAIN) { |
| 488 | mutex_enter(&lfs_lock); |
| 489 | mtsleep(&fs->lfs_availsleep, PCATCH | PUSER, |
| 490 | "lfs_fsync" , hz / 100 + 1, &lfs_lock); |
| 491 | mutex_exit(&lfs_lock); |
| 492 | } |
| 493 | } while (error == EAGAIN); |
| 494 | if (error) |
| 495 | return error; |
| 496 | |
| 497 | if ((ap->a_flags & FSYNC_DATAONLY) == 0) |
| 498 | error = lfs_update(vp, NULL, NULL, wait ? UPDATE_WAIT : 0); |
| 499 | |
| 500 | if (error == 0 && ap->a_flags & FSYNC_CACHE) { |
| 501 | int l = 0; |
| 502 | error = VOP_IOCTL(ip->i_devvp, DIOCCACHESYNC, &l, FWRITE, |
| 503 | curlwp->l_cred); |
| 504 | } |
| 505 | if (wait && !VPISEMPTY(vp)) |
| 506 | LFS_SET_UINO(ip, IN_MODIFIED); |
| 507 | |
| 508 | return error; |
| 509 | } |
| 510 | |
| 511 | /* |
| 512 | * Take IN_ADIROP off, then call ulfs_inactive. |
| 513 | */ |
| 514 | int |
| 515 | lfs_inactive(void *v) |
| 516 | { |
| 517 | struct vop_inactive_args /* { |
| 518 | struct vnode *a_vp; |
| 519 | } */ *ap = v; |
| 520 | |
| 521 | lfs_unmark_vnode(ap->a_vp); |
| 522 | |
| 523 | /* |
| 524 | * The Ifile is only ever inactivated on unmount. |
| 525 | * Streamline this process by not giving it more dirty blocks. |
| 526 | */ |
| 527 | if (VTOI(ap->a_vp)->i_number == LFS_IFILE_INUM) { |
| 528 | mutex_enter(&lfs_lock); |
| 529 | LFS_CLR_UINO(VTOI(ap->a_vp), IN_ALLMOD); |
| 530 | mutex_exit(&lfs_lock); |
| 531 | VOP_UNLOCK(ap->a_vp); |
| 532 | return 0; |
| 533 | } |
| 534 | |
| 535 | #ifdef DEBUG |
| 536 | /* |
| 537 | * This might happen on unmount. |
| 538 | * XXX If it happens at any other time, it should be a panic. |
| 539 | */ |
| 540 | if (ap->a_vp->v_uflag & VU_DIROP) { |
| 541 | struct inode *ip = VTOI(ap->a_vp); |
| 542 | printf("lfs_inactive: inactivating VU_DIROP? ino = %d\n" , (int)ip->i_number); |
| 543 | } |
| 544 | #endif /* DIAGNOSTIC */ |
| 545 | |
| 546 | return ulfs_inactive(v); |
| 547 | } |
| 548 | |
| 549 | int |
| 550 | lfs_set_dirop(struct vnode *dvp, struct vnode *vp) |
| 551 | { |
| 552 | struct lfs *fs; |
| 553 | int error; |
| 554 | |
| 555 | KASSERT(VOP_ISLOCKED(dvp)); |
| 556 | KASSERT(vp == NULL || VOP_ISLOCKED(vp)); |
| 557 | |
| 558 | fs = VTOI(dvp)->i_lfs; |
| 559 | |
| 560 | ASSERT_NO_SEGLOCK(fs); |
| 561 | /* |
| 562 | * LFS_NRESERVE calculates direct and indirect blocks as well |
| 563 | * as an inode block; an overestimate in most cases. |
| 564 | */ |
| 565 | if ((error = lfs_reserve(fs, dvp, vp, LFS_NRESERVE(fs))) != 0) |
| 566 | return (error); |
| 567 | |
| 568 | restart: |
| 569 | mutex_enter(&lfs_lock); |
| 570 | if (fs->lfs_dirops == 0) { |
| 571 | mutex_exit(&lfs_lock); |
| 572 | lfs_check(dvp, LFS_UNUSED_LBN, 0); |
| 573 | mutex_enter(&lfs_lock); |
| 574 | } |
| 575 | while (fs->lfs_writer) { |
| 576 | error = mtsleep(&fs->lfs_dirops, (PRIBIO + 1) | PCATCH, |
| 577 | "lfs_sdirop" , 0, &lfs_lock); |
| 578 | if (error == EINTR) { |
| 579 | mutex_exit(&lfs_lock); |
| 580 | goto unreserve; |
| 581 | } |
| 582 | } |
| 583 | if (lfs_dirvcount > LFS_MAX_DIROP && fs->lfs_dirops == 0) { |
| 584 | wakeup(&lfs_writer_daemon); |
| 585 | mutex_exit(&lfs_lock); |
| 586 | preempt(); |
| 587 | goto restart; |
| 588 | } |
| 589 | |
| 590 | if (lfs_dirvcount > LFS_MAX_DIROP) { |
| 591 | DLOG((DLOG_DIROP, "lfs_set_dirop: sleeping with dirops=%d, " |
| 592 | "dirvcount=%d\n" , fs->lfs_dirops, lfs_dirvcount)); |
| 593 | if ((error = mtsleep(&lfs_dirvcount, |
| 594 | PCATCH | PUSER | PNORELOCK, "lfs_maxdirop" , 0, |
| 595 | &lfs_lock)) != 0) { |
| 596 | mutex_exit(&lfs_lock); |
| 597 | goto unreserve; |
| 598 | } |
| 599 | mutex_exit(&lfs_lock); |
| 600 | goto restart; |
| 601 | } |
| 602 | |
| 603 | ++fs->lfs_dirops; |
| 604 | /* fs->lfs_doifile = 1; */ /* XXX why? --ks */ |
| 605 | mutex_exit(&lfs_lock); |
| 606 | |
| 607 | /* Hold a reference so SET_ENDOP will be happy */ |
| 608 | vref(dvp); |
| 609 | if (vp) { |
| 610 | vref(vp); |
| 611 | MARK_VNODE(vp); |
| 612 | } |
| 613 | |
| 614 | MARK_VNODE(dvp); |
| 615 | return 0; |
| 616 | |
| 617 | unreserve: |
| 618 | lfs_reserve(fs, dvp, vp, -LFS_NRESERVE(fs)); |
| 619 | return error; |
| 620 | } |
| 621 | |
| 622 | /* |
| 623 | * Opposite of lfs_set_dirop... mostly. For now at least must call |
| 624 | * UNMARK_VNODE(dvp) explicitly first. (XXX: clean that up) |
| 625 | */ |
| 626 | void |
| 627 | lfs_unset_dirop(struct lfs *fs, struct vnode *dvp, const char *str) |
| 628 | { |
| 629 | mutex_enter(&lfs_lock); |
| 630 | --fs->lfs_dirops; |
| 631 | if (!fs->lfs_dirops) { |
| 632 | if (fs->lfs_nadirop) { |
| 633 | panic("lfs_unset_dirop: %s: no dirops but " |
| 634 | " nadirop=%d" , str, |
| 635 | fs->lfs_nadirop); |
| 636 | } |
| 637 | wakeup(&fs->lfs_writer); |
| 638 | mutex_exit(&lfs_lock); |
| 639 | lfs_check(dvp, LFS_UNUSED_LBN, 0); |
| 640 | } else { |
| 641 | mutex_exit(&lfs_lock); |
| 642 | } |
| 643 | lfs_reserve(fs, dvp, NULL, -LFS_NRESERVE(fs)); |
| 644 | } |
| 645 | |
| 646 | void |
| 647 | lfs_mark_vnode(struct vnode *vp) |
| 648 | { |
| 649 | struct inode *ip = VTOI(vp); |
| 650 | struct lfs *fs = ip->i_lfs; |
| 651 | |
| 652 | mutex_enter(&lfs_lock); |
| 653 | if (!(ip->i_flag & IN_ADIROP)) { |
| 654 | if (!(vp->v_uflag & VU_DIROP)) { |
| 655 | mutex_exit(&lfs_lock); |
| 656 | vref(vp); |
| 657 | mutex_enter(&lfs_lock); |
| 658 | ++lfs_dirvcount; |
| 659 | ++fs->lfs_dirvcount; |
| 660 | TAILQ_INSERT_TAIL(&fs->lfs_dchainhd, ip, i_lfs_dchain); |
| 661 | vp->v_uflag |= VU_DIROP; |
| 662 | } |
| 663 | ++fs->lfs_nadirop; |
| 664 | ip->i_flag &= ~IN_CDIROP; |
| 665 | ip->i_flag |= IN_ADIROP; |
| 666 | } else |
| 667 | KASSERT(vp->v_uflag & VU_DIROP); |
| 668 | mutex_exit(&lfs_lock); |
| 669 | } |
| 670 | |
| 671 | void |
| 672 | lfs_unmark_vnode(struct vnode *vp) |
| 673 | { |
| 674 | struct inode *ip = VTOI(vp); |
| 675 | |
| 676 | mutex_enter(&lfs_lock); |
| 677 | if (ip && (ip->i_flag & IN_ADIROP)) { |
| 678 | KASSERT(vp->v_uflag & VU_DIROP); |
| 679 | --ip->i_lfs->lfs_nadirop; |
| 680 | ip->i_flag &= ~IN_ADIROP; |
| 681 | } |
| 682 | mutex_exit(&lfs_lock); |
| 683 | } |
| 684 | |
| 685 | int |
| 686 | lfs_symlink(void *v) |
| 687 | { |
| 688 | struct vop_symlink_v3_args /* { |
| 689 | struct vnode *a_dvp; |
| 690 | struct vnode **a_vpp; |
| 691 | struct componentname *a_cnp; |
| 692 | struct vattr *a_vap; |
| 693 | char *a_target; |
| 694 | } */ *ap = v; |
| 695 | struct lfs *fs; |
| 696 | struct vnode *dvp, **vpp; |
| 697 | struct inode *ip; |
| 698 | struct ulfs_lookup_results *ulr; |
| 699 | ssize_t len; /* XXX should be size_t */ |
| 700 | int error; |
| 701 | |
| 702 | dvp = ap->a_dvp; |
| 703 | vpp = ap->a_vpp; |
| 704 | |
| 705 | KASSERT(vpp != NULL); |
| 706 | KASSERT(*vpp == NULL); |
| 707 | KASSERT(ap->a_vap->va_type == VLNK); |
| 708 | |
| 709 | /* XXX should handle this material another way */ |
| 710 | ulr = &VTOI(ap->a_dvp)->i_crap; |
| 711 | ULFS_CHECK_CRAPCOUNTER(VTOI(ap->a_dvp)); |
| 712 | |
| 713 | fs = VFSTOULFS(dvp->v_mount)->um_lfs; |
| 714 | ASSERT_NO_SEGLOCK(fs); |
| 715 | if (fs->lfs_ronly) { |
| 716 | return EROFS; |
| 717 | } |
| 718 | |
| 719 | error = lfs_set_dirop(dvp, NULL); |
| 720 | if (error) |
| 721 | return error; |
| 722 | |
| 723 | fstrans_start(dvp->v_mount, FSTRANS_SHARED); |
| 724 | error = lfs_makeinode(ap->a_vap, dvp, ulr, vpp, ap->a_cnp); |
| 725 | if (error) { |
| 726 | goto out; |
| 727 | } |
| 728 | |
| 729 | VN_KNOTE(ap->a_dvp, NOTE_WRITE); |
| 730 | ip = VTOI(*vpp); |
| 731 | |
| 732 | /* |
| 733 | * This test is off by one. um_maxsymlinklen contains the |
| 734 | * number of bytes available, and we aren't storing a \0, so |
| 735 | * the test should properly be <=. However, it cannot be |
| 736 | * changed as this would break compatibility with existing fs |
| 737 | * images -- see the way ulfs_readlink() works. |
| 738 | */ |
| 739 | len = strlen(ap->a_target); |
| 740 | if (len < ip->i_lfs->um_maxsymlinklen) { |
| 741 | memcpy((char *)SHORTLINK(ip), ap->a_target, len); |
| 742 | ip->i_size = len; |
| 743 | DIP_ASSIGN(ip, size, len); |
| 744 | uvm_vnp_setsize(*vpp, ip->i_size); |
| 745 | ip->i_flag |= IN_CHANGE | IN_UPDATE; |
| 746 | if ((*vpp)->v_mount->mnt_flag & MNT_RELATIME) |
| 747 | ip->i_flag |= IN_ACCESS; |
| 748 | } else { |
| 749 | error = ulfs_bufio(UIO_WRITE, *vpp, ap->a_target, len, (off_t)0, |
| 750 | IO_NODELOCKED | IO_JOURNALLOCKED, ap->a_cnp->cn_cred, NULL, |
| 751 | NULL); |
| 752 | } |
| 753 | |
| 754 | VOP_UNLOCK(*vpp); |
| 755 | if (error) |
| 756 | vrele(*vpp); |
| 757 | |
| 758 | out: |
| 759 | fstrans_done(dvp->v_mount); |
| 760 | |
| 761 | UNMARK_VNODE(dvp); |
| 762 | /* XXX: is it even possible for the symlink to get MARK'd? */ |
| 763 | UNMARK_VNODE(*vpp); |
| 764 | if (error) { |
| 765 | *vpp = NULL; |
| 766 | } |
| 767 | lfs_unset_dirop(fs, dvp, "symlink" ); |
| 768 | |
| 769 | vrele(dvp); |
| 770 | return (error); |
| 771 | } |
| 772 | |
| 773 | int |
| 774 | lfs_mknod(void *v) |
| 775 | { |
| 776 | struct vop_mknod_v3_args /* { |
| 777 | struct vnode *a_dvp; |
| 778 | struct vnode **a_vpp; |
| 779 | struct componentname *a_cnp; |
| 780 | struct vattr *a_vap; |
| 781 | } */ *ap = v; |
| 782 | struct lfs *fs; |
| 783 | struct vnode *dvp, **vpp; |
| 784 | struct vattr *vap; |
| 785 | struct inode *ip; |
| 786 | int error; |
| 787 | ino_t ino; |
| 788 | struct ulfs_lookup_results *ulr; |
| 789 | |
| 790 | dvp = ap->a_dvp; |
| 791 | vpp = ap->a_vpp; |
| 792 | vap = ap->a_vap; |
| 793 | |
| 794 | KASSERT(vpp != NULL); |
| 795 | KASSERT(*vpp == NULL); |
| 796 | |
| 797 | /* XXX should handle this material another way */ |
| 798 | ulr = &VTOI(dvp)->i_crap; |
| 799 | ULFS_CHECK_CRAPCOUNTER(VTOI(dvp)); |
| 800 | |
| 801 | fs = VFSTOULFS(dvp->v_mount)->um_lfs; |
| 802 | ASSERT_NO_SEGLOCK(fs); |
| 803 | if (fs->lfs_ronly) { |
| 804 | return EROFS; |
| 805 | } |
| 806 | |
| 807 | error = lfs_set_dirop(dvp, NULL); |
| 808 | if (error) |
| 809 | return error; |
| 810 | |
| 811 | fstrans_start(dvp->v_mount, FSTRANS_SHARED); |
| 812 | error = lfs_makeinode(vap, dvp, ulr, vpp, ap->a_cnp); |
| 813 | |
| 814 | /* Either way we're done with the dirop at this point */ |
| 815 | UNMARK_VNODE(dvp); |
| 816 | UNMARK_VNODE(*vpp); |
| 817 | lfs_unset_dirop(fs, dvp, "mknod" ); |
| 818 | |
| 819 | if (error) { |
| 820 | fstrans_done(dvp->v_mount); |
| 821 | vrele(dvp); |
| 822 | *vpp = NULL; |
| 823 | return (error); |
| 824 | } |
| 825 | |
| 826 | VN_KNOTE(dvp, NOTE_WRITE); |
| 827 | ip = VTOI(*vpp); |
| 828 | ino = ip->i_number; |
| 829 | ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE; |
| 830 | |
| 831 | /* |
| 832 | * Call fsync to write the vnode so that we don't have to deal with |
| 833 | * flushing it when it's marked VU_DIROP or reclaiming. |
| 834 | * |
| 835 | * XXX KS - If we can't flush we also can't call vgone(), so must |
| 836 | * return. But, that leaves this vnode in limbo, also not good. |
| 837 | * Can this ever happen (barring hardware failure)? |
| 838 | */ |
| 839 | if ((error = VOP_FSYNC(*vpp, NOCRED, FSYNC_WAIT, 0, 0)) != 0) { |
| 840 | panic("lfs_mknod: couldn't fsync (ino %llu)" , |
| 841 | (unsigned long long)ino); |
| 842 | /* return (error); */ |
| 843 | } |
| 844 | |
| 845 | fstrans_done(dvp->v_mount); |
| 846 | vrele(dvp); |
| 847 | KASSERT(error == 0); |
| 848 | VOP_UNLOCK(*vpp); |
| 849 | return (0); |
| 850 | } |
| 851 | |
| 852 | /* |
| 853 | * Create a regular file |
| 854 | */ |
| 855 | int |
| 856 | lfs_create(void *v) |
| 857 | { |
| 858 | struct vop_create_v3_args /* { |
| 859 | struct vnode *a_dvp; |
| 860 | struct vnode **a_vpp; |
| 861 | struct componentname *a_cnp; |
| 862 | struct vattr *a_vap; |
| 863 | } */ *ap = v; |
| 864 | struct lfs *fs; |
| 865 | struct vnode *dvp, **vpp; |
| 866 | struct vattr *vap; |
| 867 | struct ulfs_lookup_results *ulr; |
| 868 | int error; |
| 869 | |
| 870 | dvp = ap->a_dvp; |
| 871 | vpp = ap->a_vpp; |
| 872 | vap = ap->a_vap; |
| 873 | |
| 874 | KASSERT(vpp != NULL); |
| 875 | KASSERT(*vpp == NULL); |
| 876 | |
| 877 | /* XXX should handle this material another way */ |
| 878 | ulr = &VTOI(dvp)->i_crap; |
| 879 | ULFS_CHECK_CRAPCOUNTER(VTOI(dvp)); |
| 880 | |
| 881 | fs = VFSTOULFS(dvp->v_mount)->um_lfs; |
| 882 | ASSERT_NO_SEGLOCK(fs); |
| 883 | if (fs->lfs_ronly) { |
| 884 | return EROFS; |
| 885 | } |
| 886 | |
| 887 | error = lfs_set_dirop(dvp, NULL); |
| 888 | if (error) |
| 889 | return error; |
| 890 | |
| 891 | fstrans_start(dvp->v_mount, FSTRANS_SHARED); |
| 892 | error = lfs_makeinode(vap, dvp, ulr, vpp, ap->a_cnp); |
| 893 | if (error) { |
| 894 | fstrans_done(dvp->v_mount); |
| 895 | goto out; |
| 896 | } |
| 897 | fstrans_done(dvp->v_mount); |
| 898 | VN_KNOTE(dvp, NOTE_WRITE); |
| 899 | VOP_UNLOCK(*vpp); |
| 900 | |
| 901 | out: |
| 902 | |
| 903 | UNMARK_VNODE(dvp); |
| 904 | UNMARK_VNODE(*vpp); |
| 905 | if (error) { |
| 906 | *vpp = NULL; |
| 907 | } |
| 908 | lfs_unset_dirop(fs, dvp, "create" ); |
| 909 | |
| 910 | vrele(dvp); |
| 911 | return (error); |
| 912 | } |
| 913 | |
| 914 | int |
| 915 | lfs_mkdir(void *v) |
| 916 | { |
| 917 | struct vop_mkdir_v3_args /* { |
| 918 | struct vnode *a_dvp; |
| 919 | struct vnode **a_vpp; |
| 920 | struct componentname *a_cnp; |
| 921 | struct vattr *a_vap; |
| 922 | } */ *ap = v; |
| 923 | struct lfs *fs; |
| 924 | struct vnode *dvp, *tvp, **vpp; |
| 925 | struct inode *dp, *ip; |
| 926 | struct componentname *cnp; |
| 927 | struct vattr *vap; |
| 928 | struct ulfs_lookup_results *ulr; |
| 929 | struct buf *bp; |
| 930 | LFS_DIRHEADER *dirp; |
| 931 | int dirblksiz; |
| 932 | int error; |
| 933 | |
| 934 | dvp = ap->a_dvp; |
| 935 | tvp = NULL; |
| 936 | vpp = ap->a_vpp; |
| 937 | cnp = ap->a_cnp; |
| 938 | vap = ap->a_vap; |
| 939 | |
| 940 | dp = VTOI(dvp); |
| 941 | ip = NULL; |
| 942 | |
| 943 | KASSERT(vap->va_type == VDIR); |
| 944 | KASSERT(vpp != NULL); |
| 945 | KASSERT(*vpp == NULL); |
| 946 | |
| 947 | /* XXX should handle this material another way */ |
| 948 | ulr = &dp->i_crap; |
| 949 | ULFS_CHECK_CRAPCOUNTER(dp); |
| 950 | |
| 951 | fs = VFSTOULFS(dvp->v_mount)->um_lfs; |
| 952 | ASSERT_NO_SEGLOCK(fs); |
| 953 | if (fs->lfs_ronly) { |
| 954 | return EROFS; |
| 955 | } |
| 956 | dirblksiz = fs->um_dirblksiz; |
| 957 | /* XXX dholland 20150911 I believe this to be true, but... */ |
| 958 | //KASSERT(dirblksiz == LFS_DIRBLKSIZ); |
| 959 | |
| 960 | error = lfs_set_dirop(dvp, NULL); |
| 961 | if (error) |
| 962 | return error; |
| 963 | |
| 964 | fstrans_start(dvp->v_mount, FSTRANS_SHARED); |
| 965 | |
| 966 | if ((nlink_t)dp->i_nlink >= LINK_MAX) { |
| 967 | error = EMLINK; |
| 968 | goto out; |
| 969 | } |
| 970 | |
| 971 | /* |
| 972 | * Must simulate part of lfs_makeinode here to acquire the inode, |
| 973 | * but not have it entered in the parent directory. The entry is |
| 974 | * made later after writing "." and ".." entries. |
| 975 | */ |
| 976 | error = vcache_new(dvp->v_mount, dvp, vap, cnp->cn_cred, ap->a_vpp); |
| 977 | if (error) |
| 978 | goto out; |
| 979 | |
| 980 | error = vn_lock(*ap->a_vpp, LK_EXCLUSIVE); |
| 981 | if (error) { |
| 982 | vrele(*ap->a_vpp); |
| 983 | *ap->a_vpp = NULL; |
| 984 | goto out; |
| 985 | } |
| 986 | |
| 987 | tvp = *ap->a_vpp; |
| 988 | lfs_mark_vnode(tvp); |
| 989 | ip = VTOI(tvp); |
| 990 | ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE; |
| 991 | ip->i_nlink = 2; |
| 992 | DIP_ASSIGN(ip, nlink, 2); |
| 993 | if (cnp->cn_flags & ISWHITEOUT) { |
| 994 | ip->i_flags |= UF_OPAQUE; |
| 995 | DIP_ASSIGN(ip, flags, ip->i_flags); |
| 996 | } |
| 997 | |
| 998 | /* |
| 999 | * Bump link count in parent directory to reflect work done below. |
| 1000 | */ |
| 1001 | dp->i_nlink++; |
| 1002 | DIP_ASSIGN(dp, nlink, dp->i_nlink); |
| 1003 | dp->i_flag |= IN_CHANGE; |
| 1004 | if ((error = lfs_update(dvp, NULL, NULL, UPDATE_DIROP)) != 0) |
| 1005 | goto bad; |
| 1006 | |
| 1007 | /* |
| 1008 | * Initialize directory with "." and "..". This used to use a |
| 1009 | * static template but that adds moving parts for very little |
| 1010 | * benefit. |
| 1011 | */ |
| 1012 | if ((error = lfs_balloc(tvp, (off_t)0, dirblksiz, cnp->cn_cred, |
| 1013 | B_CLRBUF, &bp)) != 0) |
| 1014 | goto bad; |
| 1015 | ip->i_size = dirblksiz; |
| 1016 | DIP_ASSIGN(ip, size, dirblksiz); |
| 1017 | ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE; |
| 1018 | uvm_vnp_setsize(tvp, ip->i_size); |
| 1019 | dirp = bp->b_data; |
| 1020 | |
| 1021 | /* . */ |
| 1022 | lfs_dir_setino(fs, dirp, ip->i_number); |
| 1023 | lfs_dir_setreclen(fs, dirp, LFS_DIRECTSIZ(fs, 1)); |
| 1024 | lfs_dir_settype(fs, dirp, LFS_DT_DIR); |
| 1025 | lfs_dir_setnamlen(fs, dirp, 1); |
| 1026 | lfs_copydirname(fs, lfs_dir_nameptr(fs, dirp), "." , 1, |
| 1027 | LFS_DIRECTSIZ(fs, 1)); |
| 1028 | dirp = LFS_NEXTDIR(fs, dirp); |
| 1029 | /* .. */ |
| 1030 | lfs_dir_setino(fs, dirp, dp->i_number); |
| 1031 | lfs_dir_setreclen(fs, dirp, dirblksiz - LFS_DIRECTSIZ(fs, 1)); |
| 1032 | lfs_dir_settype(fs, dirp, LFS_DT_DIR); |
| 1033 | lfs_dir_setnamlen(fs, dirp, 2); |
| 1034 | lfs_copydirname(fs, lfs_dir_nameptr(fs, dirp), ".." , 2, |
| 1035 | dirblksiz - LFS_DIRECTSIZ(fs, 1)); |
| 1036 | |
| 1037 | /* |
| 1038 | * Directory set up; now install its entry in the parent directory. |
| 1039 | */ |
| 1040 | if ((error = VOP_BWRITE(bp->b_vp, bp)) != 0) |
| 1041 | goto bad; |
| 1042 | if ((error = lfs_update(tvp, NULL, NULL, UPDATE_DIROP)) != 0) { |
| 1043 | goto bad; |
| 1044 | } |
| 1045 | error = ulfs_direnter(dvp, ulr, tvp, |
| 1046 | cnp, ip->i_number, LFS_IFTODT(ip->i_mode), bp); |
| 1047 | bad: |
| 1048 | if (error == 0) { |
| 1049 | VN_KNOTE(dvp, NOTE_WRITE | NOTE_LINK); |
| 1050 | VOP_UNLOCK(tvp); |
| 1051 | } else { |
| 1052 | dp->i_nlink--; |
| 1053 | DIP_ASSIGN(dp, nlink, dp->i_nlink); |
| 1054 | dp->i_flag |= IN_CHANGE; |
| 1055 | /* |
| 1056 | * No need to do an explicit lfs_truncate here, vrele will |
| 1057 | * do this for us because we set the link count to 0. |
| 1058 | */ |
| 1059 | ip->i_nlink = 0; |
| 1060 | DIP_ASSIGN(ip, nlink, 0); |
| 1061 | ip->i_flag |= IN_CHANGE; |
| 1062 | /* If IN_ADIROP, account for it */ |
| 1063 | lfs_unmark_vnode(tvp); |
| 1064 | vput(tvp); |
| 1065 | } |
| 1066 | |
| 1067 | out: |
| 1068 | fstrans_done(dvp->v_mount); |
| 1069 | |
| 1070 | UNMARK_VNODE(dvp); |
| 1071 | UNMARK_VNODE(*vpp); |
| 1072 | if (error) { |
| 1073 | *vpp = NULL; |
| 1074 | } |
| 1075 | lfs_unset_dirop(fs, dvp, "mkdir" ); |
| 1076 | |
| 1077 | vrele(dvp); |
| 1078 | return (error); |
| 1079 | } |
| 1080 | |
| 1081 | int |
| 1082 | lfs_remove(void *v) |
| 1083 | { |
| 1084 | struct vop_remove_args /* { |
| 1085 | struct vnode *a_dvp; |
| 1086 | struct vnode *a_vp; |
| 1087 | struct componentname *a_cnp; |
| 1088 | } */ *ap = v; |
| 1089 | struct vnode *dvp, *vp; |
| 1090 | struct inode *ip; |
| 1091 | int error; |
| 1092 | |
| 1093 | dvp = ap->a_dvp; |
| 1094 | vp = ap->a_vp; |
| 1095 | ip = VTOI(vp); |
| 1096 | if ((error = lfs_set_dirop(dvp, vp)) != 0) { |
| 1097 | if (dvp == vp) |
| 1098 | vrele(vp); |
| 1099 | else |
| 1100 | vput(vp); |
| 1101 | vput(dvp); |
| 1102 | return error; |
| 1103 | } |
| 1104 | error = ulfs_remove(ap); |
| 1105 | if (ip->i_nlink == 0) |
| 1106 | lfs_orphan(ip->i_lfs, ip->i_number); |
| 1107 | |
| 1108 | UNMARK_VNODE(dvp); |
| 1109 | if (ap->a_vp) { |
| 1110 | UNMARK_VNODE(ap->a_vp); |
| 1111 | } |
| 1112 | lfs_unset_dirop(ip->i_lfs, dvp, "remove" ); |
| 1113 | vrele(dvp); |
| 1114 | if (ap->a_vp) { |
| 1115 | vrele(ap->a_vp); |
| 1116 | } |
| 1117 | |
| 1118 | return (error); |
| 1119 | } |
| 1120 | |
| 1121 | int |
| 1122 | lfs_rmdir(void *v) |
| 1123 | { |
| 1124 | struct vop_rmdir_args /* { |
| 1125 | struct vnodeop_desc *a_desc; |
| 1126 | struct vnode *a_dvp; |
| 1127 | struct vnode *a_vp; |
| 1128 | struct componentname *a_cnp; |
| 1129 | } */ *ap = v; |
| 1130 | struct vnode *vp; |
| 1131 | struct inode *ip; |
| 1132 | int error; |
| 1133 | |
| 1134 | vp = ap->a_vp; |
| 1135 | ip = VTOI(vp); |
| 1136 | if ((error = lfs_set_dirop(ap->a_dvp, ap->a_vp)) != 0) { |
| 1137 | if (ap->a_dvp == vp) |
| 1138 | vrele(ap->a_dvp); |
| 1139 | else |
| 1140 | vput(ap->a_dvp); |
| 1141 | vput(vp); |
| 1142 | return error; |
| 1143 | } |
| 1144 | error = ulfs_rmdir(ap); |
| 1145 | if (ip->i_nlink == 0) |
| 1146 | lfs_orphan(ip->i_lfs, ip->i_number); |
| 1147 | |
| 1148 | UNMARK_VNODE(ap->a_dvp); |
| 1149 | if (ap->a_vp) { |
| 1150 | UNMARK_VNODE(ap->a_vp); |
| 1151 | } |
| 1152 | lfs_unset_dirop(ip->i_lfs, ap->a_dvp, "rmdir" ); |
| 1153 | vrele(ap->a_dvp); |
| 1154 | if (ap->a_vp) { |
| 1155 | vrele(ap->a_vp); |
| 1156 | } |
| 1157 | |
| 1158 | return (error); |
| 1159 | } |
| 1160 | |
| 1161 | int |
| 1162 | lfs_link(void *v) |
| 1163 | { |
| 1164 | struct vop_link_v2_args /* { |
| 1165 | struct vnode *a_dvp; |
| 1166 | struct vnode *a_vp; |
| 1167 | struct componentname *a_cnp; |
| 1168 | } */ *ap = v; |
| 1169 | struct lfs *fs; |
| 1170 | struct vnode *dvp; |
| 1171 | int error; |
| 1172 | |
| 1173 | dvp = ap->a_dvp; |
| 1174 | |
| 1175 | fs = VFSTOULFS(dvp->v_mount)->um_lfs; |
| 1176 | ASSERT_NO_SEGLOCK(fs); |
| 1177 | if (fs->lfs_ronly) { |
| 1178 | return EROFS; |
| 1179 | } |
| 1180 | |
| 1181 | error = lfs_set_dirop(dvp, NULL); |
| 1182 | if (error) { |
| 1183 | return error; |
| 1184 | } |
| 1185 | |
| 1186 | error = ulfs_link(ap); |
| 1187 | |
| 1188 | UNMARK_VNODE(dvp); |
| 1189 | lfs_unset_dirop(fs, dvp, "link" ); |
| 1190 | vrele(dvp); |
| 1191 | |
| 1192 | return (error); |
| 1193 | } |
| 1194 | |
| 1195 | /* XXX hack to avoid calling ITIMES in getattr */ |
| 1196 | int |
| 1197 | lfs_getattr(void *v) |
| 1198 | { |
| 1199 | struct vop_getattr_args /* { |
| 1200 | struct vnode *a_vp; |
| 1201 | struct vattr *a_vap; |
| 1202 | kauth_cred_t a_cred; |
| 1203 | } */ *ap = v; |
| 1204 | struct vnode *vp = ap->a_vp; |
| 1205 | struct inode *ip = VTOI(vp); |
| 1206 | struct vattr *vap = ap->a_vap; |
| 1207 | struct lfs *fs = ip->i_lfs; |
| 1208 | |
| 1209 | fstrans_start(vp->v_mount, FSTRANS_SHARED); |
| 1210 | /* |
| 1211 | * Copy from inode table |
| 1212 | */ |
| 1213 | vap->va_fsid = ip->i_dev; |
| 1214 | vap->va_fileid = ip->i_number; |
| 1215 | vap->va_mode = ip->i_mode & ~LFS_IFMT; |
| 1216 | vap->va_nlink = ip->i_nlink; |
| 1217 | vap->va_uid = ip->i_uid; |
| 1218 | vap->va_gid = ip->i_gid; |
| 1219 | switch (vp->v_type) { |
| 1220 | case VBLK: |
| 1221 | case VCHR: |
| 1222 | vap->va_rdev = (dev_t)lfs_dino_getrdev(fs, ip->i_din); |
| 1223 | break; |
| 1224 | default: |
| 1225 | vap->va_rdev = NODEV; |
| 1226 | break; |
| 1227 | } |
| 1228 | vap->va_size = vp->v_size; |
| 1229 | vap->va_atime.tv_sec = lfs_dino_getatime(fs, ip->i_din); |
| 1230 | vap->va_atime.tv_nsec = lfs_dino_getatimensec(fs, ip->i_din); |
| 1231 | vap->va_mtime.tv_sec = lfs_dino_getmtime(fs, ip->i_din); |
| 1232 | vap->va_mtime.tv_nsec = lfs_dino_getmtimensec(fs, ip->i_din); |
| 1233 | vap->va_ctime.tv_sec = lfs_dino_getctime(fs, ip->i_din); |
| 1234 | vap->va_ctime.tv_nsec = lfs_dino_getctimensec(fs, ip->i_din); |
| 1235 | vap->va_flags = ip->i_flags; |
| 1236 | vap->va_gen = ip->i_gen; |
| 1237 | /* this doesn't belong here */ |
| 1238 | if (vp->v_type == VBLK) |
| 1239 | vap->va_blocksize = BLKDEV_IOSIZE; |
| 1240 | else if (vp->v_type == VCHR) |
| 1241 | vap->va_blocksize = MAXBSIZE; |
| 1242 | else |
| 1243 | vap->va_blocksize = vp->v_mount->mnt_stat.f_iosize; |
| 1244 | vap->va_bytes = lfs_fsbtob(fs, ip->i_lfs_effnblks); |
| 1245 | vap->va_type = vp->v_type; |
| 1246 | vap->va_filerev = ip->i_modrev; |
| 1247 | fstrans_done(vp->v_mount); |
| 1248 | return (0); |
| 1249 | } |
| 1250 | |
| 1251 | /* |
| 1252 | * Check to make sure the inode blocks won't choke the buffer |
| 1253 | * cache, then call ulfs_setattr as usual. |
| 1254 | */ |
| 1255 | int |
| 1256 | lfs_setattr(void *v) |
| 1257 | { |
| 1258 | struct vop_setattr_args /* { |
| 1259 | struct vnode *a_vp; |
| 1260 | struct vattr *a_vap; |
| 1261 | kauth_cred_t a_cred; |
| 1262 | } */ *ap = v; |
| 1263 | struct vnode *vp = ap->a_vp; |
| 1264 | |
| 1265 | lfs_check(vp, LFS_UNUSED_LBN, 0); |
| 1266 | return ulfs_setattr(v); |
| 1267 | } |
| 1268 | |
| 1269 | /* |
| 1270 | * Release the block we hold on lfs_newseg wrapping. Called on file close, |
| 1271 | * or explicitly from LFCNWRAPGO. Called with the interlock held. |
| 1272 | */ |
| 1273 | static int |
| 1274 | lfs_wrapgo(struct lfs *fs, struct inode *ip, int waitfor) |
| 1275 | { |
| 1276 | if (fs->lfs_stoplwp != curlwp) |
| 1277 | return EBUSY; |
| 1278 | |
| 1279 | fs->lfs_stoplwp = NULL; |
| 1280 | cv_signal(&fs->lfs_stopcv); |
| 1281 | |
| 1282 | KASSERT(fs->lfs_nowrap > 0); |
| 1283 | if (fs->lfs_nowrap <= 0) { |
| 1284 | return 0; |
| 1285 | } |
| 1286 | |
| 1287 | if (--fs->lfs_nowrap == 0) { |
| 1288 | log(LOG_NOTICE, "%s: re-enabled log wrap\n" , |
| 1289 | lfs_sb_getfsmnt(fs)); |
| 1290 | wakeup(&fs->lfs_wrappass); |
| 1291 | lfs_wakeup_cleaner(fs); |
| 1292 | } |
| 1293 | if (waitfor) { |
| 1294 | mtsleep(&fs->lfs_nextsegsleep, PCATCH | PUSER, "segment" , |
| 1295 | 0, &lfs_lock); |
| 1296 | } |
| 1297 | |
| 1298 | return 0; |
| 1299 | } |
| 1300 | |
| 1301 | /* |
| 1302 | * Close called. |
| 1303 | * |
| 1304 | * Update the times on the inode. |
| 1305 | */ |
| 1306 | /* ARGSUSED */ |
| 1307 | int |
| 1308 | lfs_close(void *v) |
| 1309 | { |
| 1310 | struct vop_close_args /* { |
| 1311 | struct vnode *a_vp; |
| 1312 | int a_fflag; |
| 1313 | kauth_cred_t a_cred; |
| 1314 | } */ *ap = v; |
| 1315 | struct vnode *vp = ap->a_vp; |
| 1316 | struct inode *ip = VTOI(vp); |
| 1317 | struct lfs *fs = ip->i_lfs; |
| 1318 | |
| 1319 | if ((ip->i_number == ULFS_ROOTINO || ip->i_number == LFS_IFILE_INUM) && |
| 1320 | fs->lfs_stoplwp == curlwp) { |
| 1321 | mutex_enter(&lfs_lock); |
| 1322 | log(LOG_NOTICE, "lfs_close: releasing log wrap control\n" ); |
| 1323 | lfs_wrapgo(fs, ip, 0); |
| 1324 | mutex_exit(&lfs_lock); |
| 1325 | } |
| 1326 | |
| 1327 | if (vp == ip->i_lfs->lfs_ivnode && |
| 1328 | vp->v_mount->mnt_iflag & IMNT_UNMOUNT) |
| 1329 | return 0; |
| 1330 | |
| 1331 | fstrans_start(vp->v_mount, FSTRANS_SHARED); |
| 1332 | if (vp->v_usecount > 1 && vp != ip->i_lfs->lfs_ivnode) { |
| 1333 | LFS_ITIMES(ip, NULL, NULL, NULL); |
| 1334 | } |
| 1335 | fstrans_done(vp->v_mount); |
| 1336 | return (0); |
| 1337 | } |
| 1338 | |
| 1339 | /* |
| 1340 | * Close wrapper for special devices. |
| 1341 | * |
| 1342 | * Update the times on the inode then do device close. |
| 1343 | */ |
| 1344 | int |
| 1345 | lfsspec_close(void *v) |
| 1346 | { |
| 1347 | struct vop_close_args /* { |
| 1348 | struct vnode *a_vp; |
| 1349 | int a_fflag; |
| 1350 | kauth_cred_t a_cred; |
| 1351 | } */ *ap = v; |
| 1352 | struct vnode *vp; |
| 1353 | struct inode *ip; |
| 1354 | |
| 1355 | vp = ap->a_vp; |
| 1356 | ip = VTOI(vp); |
| 1357 | if (vp->v_usecount > 1) { |
| 1358 | LFS_ITIMES(ip, NULL, NULL, NULL); |
| 1359 | } |
| 1360 | return (VOCALL (spec_vnodeop_p, VOFFSET(vop_close), ap)); |
| 1361 | } |
| 1362 | |
| 1363 | /* |
| 1364 | * Close wrapper for fifo's. |
| 1365 | * |
| 1366 | * Update the times on the inode then do device close. |
| 1367 | */ |
| 1368 | int |
| 1369 | lfsfifo_close(void *v) |
| 1370 | { |
| 1371 | struct vop_close_args /* { |
| 1372 | struct vnode *a_vp; |
| 1373 | int a_fflag; |
| 1374 | kauth_cred_ a_cred; |
| 1375 | } */ *ap = v; |
| 1376 | struct vnode *vp; |
| 1377 | struct inode *ip; |
| 1378 | |
| 1379 | vp = ap->a_vp; |
| 1380 | ip = VTOI(vp); |
| 1381 | if (ap->a_vp->v_usecount > 1) { |
| 1382 | LFS_ITIMES(ip, NULL, NULL, NULL); |
| 1383 | } |
| 1384 | return (VOCALL (fifo_vnodeop_p, VOFFSET(vop_close), ap)); |
| 1385 | } |
| 1386 | |
| 1387 | /* |
| 1388 | * Reclaim an inode so that it can be used for other purposes. |
| 1389 | */ |
| 1390 | |
| 1391 | int |
| 1392 | lfs_reclaim(void *v) |
| 1393 | { |
| 1394 | struct vop_reclaim_args /* { |
| 1395 | struct vnode *a_vp; |
| 1396 | } */ *ap = v; |
| 1397 | struct vnode *vp = ap->a_vp; |
| 1398 | struct inode *ip = VTOI(vp); |
| 1399 | struct lfs *fs = ip->i_lfs; |
| 1400 | int error; |
| 1401 | |
| 1402 | /* |
| 1403 | * The inode must be freed and updated before being removed |
| 1404 | * from its hash chain. Other threads trying to gain a hold |
| 1405 | * or lock on the inode will be stalled. |
| 1406 | */ |
| 1407 | if (ip->i_nlink <= 0 && (vp->v_mount->mnt_flag & MNT_RDONLY) == 0) |
| 1408 | lfs_vfree(vp, ip->i_number, ip->i_omode); |
| 1409 | |
| 1410 | mutex_enter(&lfs_lock); |
| 1411 | LFS_CLR_UINO(ip, IN_ALLMOD); |
| 1412 | mutex_exit(&lfs_lock); |
| 1413 | if ((error = ulfs_reclaim(vp))) |
| 1414 | return (error); |
| 1415 | |
| 1416 | /* |
| 1417 | * Take us off the paging and/or dirop queues if we were on them. |
| 1418 | * We shouldn't be on them. |
| 1419 | */ |
| 1420 | mutex_enter(&lfs_lock); |
| 1421 | if (ip->i_flags & IN_PAGING) { |
| 1422 | log(LOG_WARNING, "%s: reclaimed vnode is IN_PAGING\n" , |
| 1423 | lfs_sb_getfsmnt(fs)); |
| 1424 | ip->i_flags &= ~IN_PAGING; |
| 1425 | TAILQ_REMOVE(&fs->lfs_pchainhd, ip, i_lfs_pchain); |
| 1426 | } |
| 1427 | if (vp->v_uflag & VU_DIROP) { |
| 1428 | panic("reclaimed vnode is VU_DIROP" ); |
| 1429 | vp->v_uflag &= ~VU_DIROP; |
| 1430 | TAILQ_REMOVE(&fs->lfs_dchainhd, ip, i_lfs_dchain); |
| 1431 | } |
| 1432 | mutex_exit(&lfs_lock); |
| 1433 | |
| 1434 | pool_put(&lfs_dinode_pool, ip->i_din); |
| 1435 | lfs_deregister_all(vp); |
| 1436 | pool_put(&lfs_inoext_pool, ip->inode_ext.lfs); |
| 1437 | ip->inode_ext.lfs = NULL; |
| 1438 | genfs_node_destroy(vp); |
| 1439 | pool_put(&lfs_inode_pool, vp->v_data); |
| 1440 | vp->v_data = NULL; |
| 1441 | return (0); |
| 1442 | } |
| 1443 | |
| 1444 | /* |
| 1445 | * Read a block from a storage device. |
| 1446 | * |
| 1447 | * Calculate the logical to physical mapping if not done already, |
| 1448 | * then call the device strategy routine. |
| 1449 | * |
| 1450 | * In order to avoid reading blocks that are in the process of being |
| 1451 | * written by the cleaner---and hence are not mutexed by the normal |
| 1452 | * buffer cache / page cache mechanisms---check for collisions before |
| 1453 | * reading. |
| 1454 | * |
| 1455 | * We inline ulfs_strategy to make sure that the VOP_BMAP occurs *before* |
| 1456 | * the active cleaner test. |
| 1457 | * |
| 1458 | * XXX This code assumes that lfs_markv makes synchronous checkpoints. |
| 1459 | */ |
| 1460 | int |
| 1461 | lfs_strategy(void *v) |
| 1462 | { |
| 1463 | struct vop_strategy_args /* { |
| 1464 | struct vnode *a_vp; |
| 1465 | struct buf *a_bp; |
| 1466 | } */ *ap = v; |
| 1467 | struct buf *bp; |
| 1468 | struct lfs *fs; |
| 1469 | struct vnode *vp; |
| 1470 | struct inode *ip; |
| 1471 | daddr_t tbn; |
| 1472 | #define MAXLOOP 25 |
| 1473 | int i, sn, error, slept, loopcount; |
| 1474 | |
| 1475 | bp = ap->a_bp; |
| 1476 | vp = ap->a_vp; |
| 1477 | ip = VTOI(vp); |
| 1478 | fs = ip->i_lfs; |
| 1479 | |
| 1480 | /* lfs uses its strategy routine only for read */ |
| 1481 | KASSERT(bp->b_flags & B_READ); |
| 1482 | |
| 1483 | if (vp->v_type == VBLK || vp->v_type == VCHR) |
| 1484 | panic("lfs_strategy: spec" ); |
| 1485 | KASSERT(bp->b_bcount != 0); |
| 1486 | if (bp->b_blkno == bp->b_lblkno) { |
| 1487 | error = VOP_BMAP(vp, bp->b_lblkno, NULL, &bp->b_blkno, |
| 1488 | NULL); |
| 1489 | if (error) { |
| 1490 | bp->b_error = error; |
| 1491 | bp->b_resid = bp->b_bcount; |
| 1492 | biodone(bp); |
| 1493 | return (error); |
| 1494 | } |
| 1495 | if ((long)bp->b_blkno == -1) /* no valid data */ |
| 1496 | clrbuf(bp); |
| 1497 | } |
| 1498 | if ((long)bp->b_blkno < 0) { /* block is not on disk */ |
| 1499 | bp->b_resid = bp->b_bcount; |
| 1500 | biodone(bp); |
| 1501 | return (0); |
| 1502 | } |
| 1503 | |
| 1504 | slept = 1; |
| 1505 | loopcount = 0; |
| 1506 | mutex_enter(&lfs_lock); |
| 1507 | while (slept && fs->lfs_seglock) { |
| 1508 | mutex_exit(&lfs_lock); |
| 1509 | /* |
| 1510 | * Look through list of intervals. |
| 1511 | * There will only be intervals to look through |
| 1512 | * if the cleaner holds the seglock. |
| 1513 | * Since the cleaner is synchronous, we can trust |
| 1514 | * the list of intervals to be current. |
| 1515 | */ |
| 1516 | tbn = LFS_DBTOFSB(fs, bp->b_blkno); |
| 1517 | sn = lfs_dtosn(fs, tbn); |
| 1518 | slept = 0; |
| 1519 | for (i = 0; i < fs->lfs_cleanind; i++) { |
| 1520 | if (sn == lfs_dtosn(fs, fs->lfs_cleanint[i]) && |
| 1521 | tbn >= fs->lfs_cleanint[i]) { |
| 1522 | DLOG((DLOG_CLEAN, |
| 1523 | "lfs_strategy: ino %d lbn %" PRId64 |
| 1524 | " ind %d sn %d fsb %" PRIx64 |
| 1525 | " given sn %d fsb %" PRIx64 "\n" , |
| 1526 | ip->i_number, bp->b_lblkno, i, |
| 1527 | lfs_dtosn(fs, fs->lfs_cleanint[i]), |
| 1528 | fs->lfs_cleanint[i], sn, tbn)); |
| 1529 | DLOG((DLOG_CLEAN, |
| 1530 | "lfs_strategy: sleeping on ino %d lbn %" |
| 1531 | PRId64 "\n" , ip->i_number, bp->b_lblkno)); |
| 1532 | mutex_enter(&lfs_lock); |
| 1533 | if (LFS_SEGLOCK_HELD(fs) && fs->lfs_iocount) { |
| 1534 | /* |
| 1535 | * Cleaner can't wait for itself. |
| 1536 | * Instead, wait for the blocks |
| 1537 | * to be written to disk. |
| 1538 | * XXX we need pribio in the test |
| 1539 | * XXX here. |
| 1540 | */ |
| 1541 | mtsleep(&fs->lfs_iocount, |
| 1542 | (PRIBIO + 1) | PNORELOCK, |
| 1543 | "clean2" , hz/10 + 1, |
| 1544 | &lfs_lock); |
| 1545 | slept = 1; |
| 1546 | ++loopcount; |
| 1547 | break; |
| 1548 | } else if (fs->lfs_seglock) { |
| 1549 | mtsleep(&fs->lfs_seglock, |
| 1550 | (PRIBIO + 1) | PNORELOCK, |
| 1551 | "clean1" , 0, |
| 1552 | &lfs_lock); |
| 1553 | slept = 1; |
| 1554 | break; |
| 1555 | } |
| 1556 | mutex_exit(&lfs_lock); |
| 1557 | } |
| 1558 | } |
| 1559 | mutex_enter(&lfs_lock); |
| 1560 | if (loopcount > MAXLOOP) { |
| 1561 | printf("lfs_strategy: breaking out of clean2 loop\n" ); |
| 1562 | break; |
| 1563 | } |
| 1564 | } |
| 1565 | mutex_exit(&lfs_lock); |
| 1566 | |
| 1567 | vp = ip->i_devvp; |
| 1568 | return VOP_STRATEGY(vp, bp); |
| 1569 | } |
| 1570 | |
| 1571 | /* |
| 1572 | * Inline lfs_segwrite/lfs_writevnodes, but just for dirops. |
| 1573 | * Technically this is a checkpoint (the on-disk state is valid) |
| 1574 | * even though we are leaving out all the file data. |
| 1575 | */ |
| 1576 | int |
| 1577 | lfs_flush_dirops(struct lfs *fs) |
| 1578 | { |
| 1579 | struct inode *ip, *nip; |
| 1580 | struct vnode *vp; |
| 1581 | extern int lfs_dostats; /* XXX this does not belong here */ |
| 1582 | struct segment *sp; |
| 1583 | SEGSUM *ssp; |
| 1584 | int flags = 0; |
| 1585 | int error = 0; |
| 1586 | |
| 1587 | ASSERT_MAYBE_SEGLOCK(fs); |
| 1588 | KASSERT(fs->lfs_nadirop == 0); |
| 1589 | |
| 1590 | if (fs->lfs_ronly) |
| 1591 | return EROFS; |
| 1592 | |
| 1593 | mutex_enter(&lfs_lock); |
| 1594 | if (TAILQ_FIRST(&fs->lfs_dchainhd) == NULL) { |
| 1595 | mutex_exit(&lfs_lock); |
| 1596 | return 0; |
| 1597 | } else |
| 1598 | mutex_exit(&lfs_lock); |
| 1599 | |
| 1600 | if (lfs_dostats) |
| 1601 | ++lfs_stats.flush_invoked; |
| 1602 | |
| 1603 | lfs_imtime(fs); |
| 1604 | lfs_seglock(fs, flags); |
| 1605 | sp = fs->lfs_sp; |
| 1606 | |
| 1607 | /* |
| 1608 | * lfs_writevnodes, optimized to get dirops out of the way. |
| 1609 | * Only write dirops, and don't flush files' pages, only |
| 1610 | * blocks from the directories. |
| 1611 | * |
| 1612 | * We don't need to vref these files because they are |
| 1613 | * dirops and so hold an extra reference until the |
| 1614 | * segunlock clears them of that status. |
| 1615 | * |
| 1616 | * We don't need to check for IN_ADIROP because we know that |
| 1617 | * no dirops are active. |
| 1618 | * |
| 1619 | */ |
| 1620 | mutex_enter(&lfs_lock); |
| 1621 | for (ip = TAILQ_FIRST(&fs->lfs_dchainhd); ip != NULL; ip = nip) { |
| 1622 | nip = TAILQ_NEXT(ip, i_lfs_dchain); |
| 1623 | mutex_exit(&lfs_lock); |
| 1624 | vp = ITOV(ip); |
| 1625 | mutex_enter(vp->v_interlock); |
| 1626 | |
| 1627 | KASSERT((ip->i_flag & IN_ADIROP) == 0); |
| 1628 | KASSERT(vp->v_uflag & VU_DIROP); |
| 1629 | KASSERT(vdead_check(vp, VDEAD_NOWAIT) == 0); |
| 1630 | |
| 1631 | /* |
| 1632 | * All writes to directories come from dirops; all |
| 1633 | * writes to files' direct blocks go through the page |
| 1634 | * cache, which we're not touching. Reads to files |
| 1635 | * and/or directories will not be affected by writing |
| 1636 | * directory blocks inodes and file inodes. So we don't |
| 1637 | * really need to lock. |
| 1638 | */ |
| 1639 | if (vdead_check(vp, VDEAD_NOWAIT) != 0) { |
| 1640 | mutex_exit(vp->v_interlock); |
| 1641 | mutex_enter(&lfs_lock); |
| 1642 | continue; |
| 1643 | } |
| 1644 | mutex_exit(vp->v_interlock); |
| 1645 | /* XXX see below |
| 1646 | * waslocked = VOP_ISLOCKED(vp); |
| 1647 | */ |
| 1648 | if (vp->v_type != VREG && |
| 1649 | ((ip->i_flag & IN_ALLMOD) || !VPISEMPTY(vp))) { |
| 1650 | error = lfs_writefile(fs, sp, vp); |
| 1651 | if (!VPISEMPTY(vp) && !WRITEINPROG(vp) && |
| 1652 | !(ip->i_flag & IN_ALLMOD)) { |
| 1653 | mutex_enter(&lfs_lock); |
| 1654 | LFS_SET_UINO(ip, IN_MODIFIED); |
| 1655 | mutex_exit(&lfs_lock); |
| 1656 | } |
| 1657 | if (error && (sp->seg_flags & SEGM_SINGLE)) { |
| 1658 | mutex_enter(&lfs_lock); |
| 1659 | error = EAGAIN; |
| 1660 | break; |
| 1661 | } |
| 1662 | } |
| 1663 | KDASSERT(ip->i_number != LFS_IFILE_INUM); |
| 1664 | error = lfs_writeinode(fs, sp, ip); |
| 1665 | mutex_enter(&lfs_lock); |
| 1666 | if (error && (sp->seg_flags & SEGM_SINGLE)) { |
| 1667 | error = EAGAIN; |
| 1668 | break; |
| 1669 | } |
| 1670 | |
| 1671 | /* |
| 1672 | * We might need to update these inodes again, |
| 1673 | * for example, if they have data blocks to write. |
| 1674 | * Make sure that after this flush, they are still |
| 1675 | * marked IN_MODIFIED so that we don't forget to |
| 1676 | * write them. |
| 1677 | */ |
| 1678 | /* XXX only for non-directories? --KS */ |
| 1679 | LFS_SET_UINO(ip, IN_MODIFIED); |
| 1680 | } |
| 1681 | mutex_exit(&lfs_lock); |
| 1682 | /* We've written all the dirops there are */ |
| 1683 | ssp = (SEGSUM *)sp->segsum; |
| 1684 | lfs_ss_setflags(fs, ssp, lfs_ss_getflags(fs, ssp) & ~(SS_CONT)); |
| 1685 | lfs_finalize_fs_seguse(fs); |
| 1686 | (void) lfs_writeseg(fs, sp); |
| 1687 | lfs_segunlock(fs); |
| 1688 | |
| 1689 | return error; |
| 1690 | } |
| 1691 | |
| 1692 | /* |
| 1693 | * Flush all vnodes for which the pagedaemon has requested pageouts. |
| 1694 | * Skip over any files that are marked VU_DIROP (since lfs_flush_dirop() |
| 1695 | * has just run, this would be an error). If we have to skip a vnode |
| 1696 | * for any reason, just skip it; if we have to wait for the cleaner, |
| 1697 | * abort. The writer daemon will call us again later. |
| 1698 | */ |
| 1699 | int |
| 1700 | lfs_flush_pchain(struct lfs *fs) |
| 1701 | { |
| 1702 | struct inode *ip, *nip; |
| 1703 | struct vnode *vp; |
| 1704 | extern int lfs_dostats; |
| 1705 | struct segment *sp; |
| 1706 | int error, error2; |
| 1707 | |
| 1708 | ASSERT_NO_SEGLOCK(fs); |
| 1709 | |
| 1710 | if (fs->lfs_ronly) |
| 1711 | return EROFS; |
| 1712 | |
| 1713 | mutex_enter(&lfs_lock); |
| 1714 | if (TAILQ_FIRST(&fs->lfs_pchainhd) == NULL) { |
| 1715 | mutex_exit(&lfs_lock); |
| 1716 | return 0; |
| 1717 | } else |
| 1718 | mutex_exit(&lfs_lock); |
| 1719 | |
| 1720 | /* Get dirops out of the way */ |
| 1721 | if ((error = lfs_flush_dirops(fs)) != 0) |
| 1722 | return error; |
| 1723 | |
| 1724 | if (lfs_dostats) |
| 1725 | ++lfs_stats.flush_invoked; |
| 1726 | |
| 1727 | /* |
| 1728 | * Inline lfs_segwrite/lfs_writevnodes, but just for pageouts. |
| 1729 | */ |
| 1730 | lfs_imtime(fs); |
| 1731 | lfs_seglock(fs, 0); |
| 1732 | sp = fs->lfs_sp; |
| 1733 | |
| 1734 | /* |
| 1735 | * lfs_writevnodes, optimized to clear pageout requests. |
| 1736 | * Only write non-dirop files that are in the pageout queue. |
| 1737 | * We're very conservative about what we write; we want to be |
| 1738 | * fast and async. |
| 1739 | */ |
| 1740 | mutex_enter(&lfs_lock); |
| 1741 | top: |
| 1742 | for (ip = TAILQ_FIRST(&fs->lfs_pchainhd); ip != NULL; ip = nip) { |
| 1743 | struct mount *mp = ITOV(ip)->v_mount; |
| 1744 | ino_t ino = ip->i_number; |
| 1745 | |
| 1746 | nip = TAILQ_NEXT(ip, i_lfs_pchain); |
| 1747 | |
| 1748 | if (!(ip->i_flags & IN_PAGING)) |
| 1749 | goto top; |
| 1750 | |
| 1751 | mutex_exit(&lfs_lock); |
| 1752 | if (vcache_get(mp, &ino, sizeof(ino), &vp) != 0) { |
| 1753 | mutex_enter(&lfs_lock); |
| 1754 | continue; |
| 1755 | }; |
| 1756 | if (vn_lock(vp, LK_EXCLUSIVE | LK_NOWAIT) != 0) { |
| 1757 | vrele(vp); |
| 1758 | mutex_enter(&lfs_lock); |
| 1759 | continue; |
| 1760 | } |
| 1761 | ip = VTOI(vp); |
| 1762 | mutex_enter(&lfs_lock); |
| 1763 | if ((vp->v_uflag & VU_DIROP) != 0 || vp->v_type != VREG || |
| 1764 | !(ip->i_flags & IN_PAGING)) { |
| 1765 | mutex_exit(&lfs_lock); |
| 1766 | vput(vp); |
| 1767 | mutex_enter(&lfs_lock); |
| 1768 | goto top; |
| 1769 | } |
| 1770 | mutex_exit(&lfs_lock); |
| 1771 | |
| 1772 | error = lfs_writefile(fs, sp, vp); |
| 1773 | if (!VPISEMPTY(vp) && !WRITEINPROG(vp) && |
| 1774 | !(ip->i_flag & IN_ALLMOD)) { |
| 1775 | mutex_enter(&lfs_lock); |
| 1776 | LFS_SET_UINO(ip, IN_MODIFIED); |
| 1777 | mutex_exit(&lfs_lock); |
| 1778 | } |
| 1779 | KDASSERT(ip->i_number != LFS_IFILE_INUM); |
| 1780 | error2 = lfs_writeinode(fs, sp, ip); |
| 1781 | |
| 1782 | VOP_UNLOCK(vp); |
| 1783 | vrele(vp); |
| 1784 | |
| 1785 | if (error == EAGAIN || error2 == EAGAIN) { |
| 1786 | lfs_writeseg(fs, sp); |
| 1787 | mutex_enter(&lfs_lock); |
| 1788 | break; |
| 1789 | } |
| 1790 | mutex_enter(&lfs_lock); |
| 1791 | } |
| 1792 | mutex_exit(&lfs_lock); |
| 1793 | (void) lfs_writeseg(fs, sp); |
| 1794 | lfs_segunlock(fs); |
| 1795 | |
| 1796 | return 0; |
| 1797 | } |
| 1798 | |
| 1799 | /* |
| 1800 | * Conversion for compat. |
| 1801 | */ |
| 1802 | static void |
| 1803 | block_info_from_70(BLOCK_INFO *bi, const BLOCK_INFO_70 *bi70) |
| 1804 | { |
| 1805 | bi->bi_inode = bi70->bi_inode; |
| 1806 | bi->bi_lbn = bi70->bi_lbn; |
| 1807 | bi->bi_daddr = bi70->bi_daddr; |
| 1808 | bi->bi_segcreate = bi70->bi_segcreate; |
| 1809 | bi->bi_version = bi70->bi_version; |
| 1810 | bi->bi_bp = bi70->bi_bp; |
| 1811 | bi->bi_size = bi70->bi_size; |
| 1812 | } |
| 1813 | |
| 1814 | static void |
| 1815 | block_info_to_70(BLOCK_INFO_70 *bi70, const BLOCK_INFO *bi) |
| 1816 | { |
| 1817 | bi70->bi_inode = bi->bi_inode; |
| 1818 | bi70->bi_lbn = bi->bi_lbn; |
| 1819 | bi70->bi_daddr = bi->bi_daddr; |
| 1820 | bi70->bi_segcreate = bi->bi_segcreate; |
| 1821 | bi70->bi_version = bi->bi_version; |
| 1822 | bi70->bi_bp = bi->bi_bp; |
| 1823 | bi70->bi_size = bi->bi_size; |
| 1824 | } |
| 1825 | |
| 1826 | /* |
| 1827 | * Provide a fcntl interface to sys_lfs_{segwait,bmapv,markv}. |
| 1828 | */ |
| 1829 | int |
| 1830 | lfs_fcntl(void *v) |
| 1831 | { |
| 1832 | struct vop_fcntl_args /* { |
| 1833 | struct vnode *a_vp; |
| 1834 | u_int a_command; |
| 1835 | void * a_data; |
| 1836 | int a_fflag; |
| 1837 | kauth_cred_t a_cred; |
| 1838 | } */ *ap = v; |
| 1839 | struct timeval tv; |
| 1840 | struct timeval *tvp; |
| 1841 | BLOCK_INFO *blkiov; |
| 1842 | BLOCK_INFO_70 *blkiov70; |
| 1843 | CLEANERINFO *cip; |
| 1844 | SEGUSE *sup; |
| 1845 | int blkcnt, i, error; |
| 1846 | size_t fh_size; |
| 1847 | struct lfs_fcntl_markv blkvp; |
| 1848 | struct lfs_fcntl_markv_70 blkvp70; |
| 1849 | struct lwp *l; |
| 1850 | fsid_t *fsidp; |
| 1851 | struct lfs *fs; |
| 1852 | struct buf *bp; |
| 1853 | fhandle_t *fhp; |
| 1854 | daddr_t off; |
| 1855 | int oclean; |
| 1856 | |
| 1857 | /* Only respect LFS fcntls on fs root or Ifile */ |
| 1858 | if (VTOI(ap->a_vp)->i_number != ULFS_ROOTINO && |
| 1859 | VTOI(ap->a_vp)->i_number != LFS_IFILE_INUM) { |
| 1860 | return ulfs_fcntl(v); |
| 1861 | } |
| 1862 | |
| 1863 | /* Avoid locking a draining lock */ |
| 1864 | if (ap->a_vp->v_mount->mnt_iflag & IMNT_UNMOUNT) { |
| 1865 | return ESHUTDOWN; |
| 1866 | } |
| 1867 | |
| 1868 | /* LFS control and monitoring fcntls are available only to root */ |
| 1869 | l = curlwp; |
| 1870 | if (((ap->a_command & 0xff00) >> 8) == 'L' && |
| 1871 | (error = kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_LFS, |
| 1872 | KAUTH_REQ_SYSTEM_LFS_FCNTL, NULL, NULL, NULL)) != 0) |
| 1873 | return (error); |
| 1874 | |
| 1875 | fs = VTOI(ap->a_vp)->i_lfs; |
| 1876 | fsidp = &ap->a_vp->v_mount->mnt_stat.f_fsidx; |
| 1877 | |
| 1878 | error = 0; |
| 1879 | switch ((int)ap->a_command) { |
| 1880 | case LFCNSEGWAITALL_COMPAT_50: |
| 1881 | case LFCNSEGWAITALL_COMPAT: |
| 1882 | fsidp = NULL; |
| 1883 | /* FALLTHROUGH */ |
| 1884 | case LFCNSEGWAIT_COMPAT_50: |
| 1885 | case LFCNSEGWAIT_COMPAT: |
| 1886 | { |
| 1887 | struct timeval50 *tvp50 |
| 1888 | = (struct timeval50 *)ap->a_data; |
| 1889 | timeval50_to_timeval(tvp50, &tv); |
| 1890 | tvp = &tv; |
| 1891 | } |
| 1892 | goto segwait_common; |
| 1893 | case LFCNSEGWAITALL: |
| 1894 | fsidp = NULL; |
| 1895 | /* FALLTHROUGH */ |
| 1896 | case LFCNSEGWAIT: |
| 1897 | tvp = (struct timeval *)ap->a_data; |
| 1898 | segwait_common: |
| 1899 | mutex_enter(&lfs_lock); |
| 1900 | ++fs->lfs_sleepers; |
| 1901 | mutex_exit(&lfs_lock); |
| 1902 | |
| 1903 | error = lfs_segwait(fsidp, tvp); |
| 1904 | |
| 1905 | mutex_enter(&lfs_lock); |
| 1906 | if (--fs->lfs_sleepers == 0) |
| 1907 | wakeup(&fs->lfs_sleepers); |
| 1908 | mutex_exit(&lfs_lock); |
| 1909 | return error; |
| 1910 | |
| 1911 | case LFCNBMAPV_COMPAT_70: |
| 1912 | case LFCNMARKV_COMPAT_70: |
| 1913 | blkvp70 = *(struct lfs_fcntl_markv_70 *)ap->a_data; |
| 1914 | |
| 1915 | blkcnt = blkvp70.blkcnt; |
| 1916 | if ((u_int) blkcnt > LFS_MARKV_MAXBLKCNT) |
| 1917 | return (EINVAL); |
| 1918 | blkiov = lfs_malloc(fs, blkcnt * sizeof(BLOCK_INFO), LFS_NB_BLKIOV); |
| 1919 | blkiov70 = lfs_malloc(fs, sizeof(BLOCK_INFO_70), LFS_NB_BLKIOV); |
| 1920 | for (i = 0; i < blkcnt; i++) { |
| 1921 | error = copyin(&blkvp70.blkiov[i], blkiov70, |
| 1922 | sizeof(*blkiov70)); |
| 1923 | if (error) { |
| 1924 | lfs_free(fs, blkiov70, LFS_NB_BLKIOV); |
| 1925 | lfs_free(fs, blkiov, LFS_NB_BLKIOV); |
| 1926 | return error; |
| 1927 | } |
| 1928 | block_info_from_70(&blkiov[i], blkiov70); |
| 1929 | } |
| 1930 | |
| 1931 | mutex_enter(&lfs_lock); |
| 1932 | ++fs->lfs_sleepers; |
| 1933 | mutex_exit(&lfs_lock); |
| 1934 | if (ap->a_command == LFCNBMAPV) |
| 1935 | error = lfs_bmapv(l, fsidp, blkiov, blkcnt); |
| 1936 | else /* LFCNMARKV */ |
| 1937 | error = lfs_markv(l, fsidp, blkiov, blkcnt); |
| 1938 | if (error == 0) { |
| 1939 | for (i = 0; i < blkcnt; i++) { |
| 1940 | block_info_to_70(blkiov70, &blkiov[i]); |
| 1941 | error = copyout(blkiov70, &blkvp70.blkiov[i], |
| 1942 | sizeof(*blkiov70)); |
| 1943 | if (error) { |
| 1944 | break; |
| 1945 | } |
| 1946 | } |
| 1947 | } |
| 1948 | mutex_enter(&lfs_lock); |
| 1949 | if (--fs->lfs_sleepers == 0) |
| 1950 | wakeup(&fs->lfs_sleepers); |
| 1951 | mutex_exit(&lfs_lock); |
| 1952 | lfs_free(fs, blkiov, LFS_NB_BLKIOV); |
| 1953 | return error; |
| 1954 | |
| 1955 | case LFCNBMAPV: |
| 1956 | case LFCNMARKV: |
| 1957 | blkvp = *(struct lfs_fcntl_markv *)ap->a_data; |
| 1958 | |
| 1959 | blkcnt = blkvp.blkcnt; |
| 1960 | if ((u_int) blkcnt > LFS_MARKV_MAXBLKCNT) |
| 1961 | return (EINVAL); |
| 1962 | blkiov = lfs_malloc(fs, blkcnt * sizeof(BLOCK_INFO), LFS_NB_BLKIOV); |
| 1963 | if ((error = copyin(blkvp.blkiov, blkiov, |
| 1964 | blkcnt * sizeof(BLOCK_INFO))) != 0) { |
| 1965 | lfs_free(fs, blkiov, LFS_NB_BLKIOV); |
| 1966 | return error; |
| 1967 | } |
| 1968 | |
| 1969 | mutex_enter(&lfs_lock); |
| 1970 | ++fs->lfs_sleepers; |
| 1971 | mutex_exit(&lfs_lock); |
| 1972 | if (ap->a_command == LFCNBMAPV) |
| 1973 | error = lfs_bmapv(l, fsidp, blkiov, blkcnt); |
| 1974 | else /* LFCNMARKV */ |
| 1975 | error = lfs_markv(l, fsidp, blkiov, blkcnt); |
| 1976 | if (error == 0) |
| 1977 | error = copyout(blkiov, blkvp.blkiov, |
| 1978 | blkcnt * sizeof(BLOCK_INFO)); |
| 1979 | mutex_enter(&lfs_lock); |
| 1980 | if (--fs->lfs_sleepers == 0) |
| 1981 | wakeup(&fs->lfs_sleepers); |
| 1982 | mutex_exit(&lfs_lock); |
| 1983 | lfs_free(fs, blkiov, LFS_NB_BLKIOV); |
| 1984 | return error; |
| 1985 | |
| 1986 | case LFCNRECLAIM: |
| 1987 | /* |
| 1988 | * Flush dirops and write Ifile, allowing empty segments |
| 1989 | * to be immediately reclaimed. |
| 1990 | */ |
| 1991 | lfs_writer_enter(fs, "pndirop" ); |
| 1992 | off = lfs_sb_getoffset(fs); |
| 1993 | lfs_seglock(fs, SEGM_FORCE_CKP | SEGM_CKP); |
| 1994 | lfs_flush_dirops(fs); |
| 1995 | LFS_CLEANERINFO(cip, fs, bp); |
| 1996 | oclean = lfs_ci_getclean(fs, cip); |
| 1997 | LFS_SYNC_CLEANERINFO(cip, fs, bp, 1); |
| 1998 | lfs_segwrite(ap->a_vp->v_mount, SEGM_FORCE_CKP); |
| 1999 | fs->lfs_sp->seg_flags |= SEGM_PROT; |
| 2000 | lfs_segunlock(fs); |
| 2001 | lfs_writer_leave(fs); |
| 2002 | |
| 2003 | #ifdef DEBUG |
| 2004 | LFS_CLEANERINFO(cip, fs, bp); |
| 2005 | DLOG((DLOG_CLEAN, "lfs_fcntl: reclaim wrote %" PRId64 |
| 2006 | " blocks, cleaned %" PRId32 " segments (activesb %d)\n" , |
| 2007 | lfs_sb_getoffset(fs) - off, |
| 2008 | lfs_ci_getclean(fs, cip) - oclean, |
| 2009 | fs->lfs_activesb)); |
| 2010 | LFS_SYNC_CLEANERINFO(cip, fs, bp, 0); |
| 2011 | #else |
| 2012 | __USE(oclean); |
| 2013 | __USE(off); |
| 2014 | #endif |
| 2015 | |
| 2016 | return 0; |
| 2017 | |
| 2018 | case LFCNIFILEFH_COMPAT: |
| 2019 | /* Return the filehandle of the Ifile */ |
| 2020 | if ((error = kauth_authorize_system(l->l_cred, |
| 2021 | KAUTH_SYSTEM_FILEHANDLE, 0, NULL, NULL, NULL)) != 0) |
| 2022 | return (error); |
| 2023 | fhp = (struct fhandle *)ap->a_data; |
| 2024 | fhp->fh_fsid = *fsidp; |
| 2025 | fh_size = 16; /* former VFS_MAXFIDSIZ */ |
| 2026 | return lfs_vptofh(fs->lfs_ivnode, &(fhp->fh_fid), &fh_size); |
| 2027 | |
| 2028 | case LFCNIFILEFH_COMPAT2: |
| 2029 | case LFCNIFILEFH: |
| 2030 | /* Return the filehandle of the Ifile */ |
| 2031 | fhp = (struct fhandle *)ap->a_data; |
| 2032 | fhp->fh_fsid = *fsidp; |
| 2033 | fh_size = sizeof(struct lfs_fhandle) - |
| 2034 | offsetof(fhandle_t, fh_fid); |
| 2035 | return lfs_vptofh(fs->lfs_ivnode, &(fhp->fh_fid), &fh_size); |
| 2036 | |
| 2037 | case LFCNREWIND: |
| 2038 | /* Move lfs_offset to the lowest-numbered segment */ |
| 2039 | return lfs_rewind(fs, *(int *)ap->a_data); |
| 2040 | |
| 2041 | case LFCNINVAL: |
| 2042 | /* Mark a segment SEGUSE_INVAL */ |
| 2043 | LFS_SEGENTRY(sup, fs, *(int *)ap->a_data, bp); |
| 2044 | if (sup->su_nbytes > 0) { |
| 2045 | brelse(bp, 0); |
| 2046 | lfs_unset_inval_all(fs); |
| 2047 | return EBUSY; |
| 2048 | } |
| 2049 | sup->su_flags |= SEGUSE_INVAL; |
| 2050 | VOP_BWRITE(bp->b_vp, bp); |
| 2051 | return 0; |
| 2052 | |
| 2053 | case LFCNRESIZE: |
| 2054 | /* Resize the filesystem */ |
| 2055 | return lfs_resize_fs(fs, *(int *)ap->a_data); |
| 2056 | |
| 2057 | case LFCNWRAPSTOP: |
| 2058 | case LFCNWRAPSTOP_COMPAT: |
| 2059 | /* |
| 2060 | * Hold lfs_newseg at segment 0; if requested, sleep until |
| 2061 | * the filesystem wraps around. To support external agents |
| 2062 | * (dump, fsck-based regression test) that need to look at |
| 2063 | * a snapshot of the filesystem, without necessarily |
| 2064 | * requiring that all fs activity stops. |
| 2065 | */ |
| 2066 | if (fs->lfs_stoplwp == curlwp) |
| 2067 | return EALREADY; |
| 2068 | |
| 2069 | mutex_enter(&lfs_lock); |
| 2070 | while (fs->lfs_stoplwp != NULL) |
| 2071 | cv_wait(&fs->lfs_stopcv, &lfs_lock); |
| 2072 | fs->lfs_stoplwp = curlwp; |
| 2073 | if (fs->lfs_nowrap == 0) |
| 2074 | log(LOG_NOTICE, "%s: disabled log wrap\n" , |
| 2075 | lfs_sb_getfsmnt(fs)); |
| 2076 | ++fs->lfs_nowrap; |
| 2077 | if (*(int *)ap->a_data == 1 |
| 2078 | || ap->a_command == LFCNWRAPSTOP_COMPAT) { |
| 2079 | log(LOG_NOTICE, "LFCNSTOPWRAP waiting for log wrap\n" ); |
| 2080 | error = mtsleep(&fs->lfs_nowrap, PCATCH | PUSER, |
| 2081 | "segwrap" , 0, &lfs_lock); |
| 2082 | log(LOG_NOTICE, "LFCNSTOPWRAP done waiting\n" ); |
| 2083 | if (error) { |
| 2084 | lfs_wrapgo(fs, VTOI(ap->a_vp), 0); |
| 2085 | } |
| 2086 | } |
| 2087 | mutex_exit(&lfs_lock); |
| 2088 | return 0; |
| 2089 | |
| 2090 | case LFCNWRAPGO: |
| 2091 | case LFCNWRAPGO_COMPAT: |
| 2092 | /* |
| 2093 | * Having done its work, the agent wakes up the writer. |
| 2094 | * If the argument is 1, it sleeps until a new segment |
| 2095 | * is selected. |
| 2096 | */ |
| 2097 | mutex_enter(&lfs_lock); |
| 2098 | error = lfs_wrapgo(fs, VTOI(ap->a_vp), |
| 2099 | ap->a_command == LFCNWRAPGO_COMPAT ? 1 : |
| 2100 | *((int *)ap->a_data)); |
| 2101 | mutex_exit(&lfs_lock); |
| 2102 | return error; |
| 2103 | |
| 2104 | case LFCNWRAPPASS: |
| 2105 | if ((VTOI(ap->a_vp)->i_lfs_iflags & LFSI_WRAPWAIT)) |
| 2106 | return EALREADY; |
| 2107 | mutex_enter(&lfs_lock); |
| 2108 | if (fs->lfs_stoplwp != curlwp) { |
| 2109 | mutex_exit(&lfs_lock); |
| 2110 | return EALREADY; |
| 2111 | } |
| 2112 | if (fs->lfs_nowrap == 0) { |
| 2113 | mutex_exit(&lfs_lock); |
| 2114 | return EBUSY; |
| 2115 | } |
| 2116 | fs->lfs_wrappass = 1; |
| 2117 | wakeup(&fs->lfs_wrappass); |
| 2118 | /* Wait for the log to wrap, if asked */ |
| 2119 | if (*(int *)ap->a_data) { |
| 2120 | vref(ap->a_vp); |
| 2121 | VTOI(ap->a_vp)->i_lfs_iflags |= LFSI_WRAPWAIT; |
| 2122 | log(LOG_NOTICE, "LFCNPASS waiting for log wrap\n" ); |
| 2123 | error = mtsleep(&fs->lfs_nowrap, PCATCH | PUSER, |
| 2124 | "segwrap" , 0, &lfs_lock); |
| 2125 | log(LOG_NOTICE, "LFCNPASS done waiting\n" ); |
| 2126 | VTOI(ap->a_vp)->i_lfs_iflags &= ~LFSI_WRAPWAIT; |
| 2127 | vrele(ap->a_vp); |
| 2128 | } |
| 2129 | mutex_exit(&lfs_lock); |
| 2130 | return error; |
| 2131 | |
| 2132 | case LFCNWRAPSTATUS: |
| 2133 | mutex_enter(&lfs_lock); |
| 2134 | *(int *)ap->a_data = fs->lfs_wrapstatus; |
| 2135 | mutex_exit(&lfs_lock); |
| 2136 | return 0; |
| 2137 | |
| 2138 | default: |
| 2139 | return ulfs_fcntl(v); |
| 2140 | } |
| 2141 | return 0; |
| 2142 | } |
| 2143 | |
| 2144 | /* |
| 2145 | * Return the last logical file offset that should be written for this file |
| 2146 | * if we're doing a write that ends at "size". If writing, we need to know |
| 2147 | * about sizes on disk, i.e. fragments if there are any; if reading, we need |
| 2148 | * to know about entire blocks. |
| 2149 | */ |
| 2150 | void |
| 2151 | lfs_gop_size(struct vnode *vp, off_t size, off_t *eobp, int flags) |
| 2152 | { |
| 2153 | struct inode *ip = VTOI(vp); |
| 2154 | struct lfs *fs = ip->i_lfs; |
| 2155 | daddr_t olbn, nlbn; |
| 2156 | |
| 2157 | olbn = lfs_lblkno(fs, ip->i_size); |
| 2158 | nlbn = lfs_lblkno(fs, size); |
| 2159 | if (!(flags & GOP_SIZE_MEM) && nlbn < ULFS_NDADDR && olbn <= nlbn) { |
| 2160 | *eobp = lfs_fragroundup(fs, size); |
| 2161 | } else { |
| 2162 | *eobp = lfs_blkroundup(fs, size); |
| 2163 | } |
| 2164 | } |
| 2165 | |
| 2166 | #ifdef DEBUG |
| 2167 | void lfs_dump_vop(void *); |
| 2168 | |
| 2169 | void |
| 2170 | lfs_dump_vop(void *v) |
| 2171 | { |
| 2172 | struct vop_putpages_args /* { |
| 2173 | struct vnode *a_vp; |
| 2174 | voff_t a_offlo; |
| 2175 | voff_t a_offhi; |
| 2176 | int a_flags; |
| 2177 | } */ *ap = v; |
| 2178 | |
| 2179 | struct inode *ip = VTOI(ap->a_vp); |
| 2180 | struct lfs *fs = ip->i_lfs; |
| 2181 | |
| 2182 | #ifdef DDB |
| 2183 | vfs_vnode_print(ap->a_vp, 0, printf); |
| 2184 | #endif |
| 2185 | lfs_dump_dinode(fs, ip->i_din); |
| 2186 | } |
| 2187 | #endif |
| 2188 | |
| 2189 | int |
| 2190 | lfs_mmap(void *v) |
| 2191 | { |
| 2192 | struct vop_mmap_args /* { |
| 2193 | const struct vnodeop_desc *a_desc; |
| 2194 | struct vnode *a_vp; |
| 2195 | vm_prot_t a_prot; |
| 2196 | kauth_cred_t a_cred; |
| 2197 | } */ *ap = v; |
| 2198 | |
| 2199 | if (VTOI(ap->a_vp)->i_number == LFS_IFILE_INUM) |
| 2200 | return EOPNOTSUPP; |
| 2201 | return ulfs_mmap(v); |
| 2202 | } |
| 2203 | |
| 2204 | static int |
| 2205 | lfs_openextattr(void *v) |
| 2206 | { |
| 2207 | struct vop_openextattr_args /* { |
| 2208 | struct vnode *a_vp; |
| 2209 | kauth_cred_t a_cred; |
| 2210 | struct proc *a_p; |
| 2211 | } */ *ap = v; |
| 2212 | struct inode *ip = VTOI(ap->a_vp); |
| 2213 | struct ulfsmount *ump = ip->i_ump; |
| 2214 | //struct lfs *fs = ip->i_lfs; |
| 2215 | |
| 2216 | /* Not supported for ULFS1 file systems. */ |
| 2217 | if (ump->um_fstype == ULFS1) |
| 2218 | return (EOPNOTSUPP); |
| 2219 | |
| 2220 | /* XXX Not implemented for ULFS2 file systems. */ |
| 2221 | return (EOPNOTSUPP); |
| 2222 | } |
| 2223 | |
| 2224 | static int |
| 2225 | lfs_closeextattr(void *v) |
| 2226 | { |
| 2227 | struct vop_closeextattr_args /* { |
| 2228 | struct vnode *a_vp; |
| 2229 | int a_commit; |
| 2230 | kauth_cred_t a_cred; |
| 2231 | struct proc *a_p; |
| 2232 | } */ *ap = v; |
| 2233 | struct inode *ip = VTOI(ap->a_vp); |
| 2234 | struct ulfsmount *ump = ip->i_ump; |
| 2235 | //struct lfs *fs = ip->i_lfs; |
| 2236 | |
| 2237 | /* Not supported for ULFS1 file systems. */ |
| 2238 | if (ump->um_fstype == ULFS1) |
| 2239 | return (EOPNOTSUPP); |
| 2240 | |
| 2241 | /* XXX Not implemented for ULFS2 file systems. */ |
| 2242 | return (EOPNOTSUPP); |
| 2243 | } |
| 2244 | |
| 2245 | static int |
| 2246 | lfs_getextattr(void *v) |
| 2247 | { |
| 2248 | struct vop_getextattr_args /* { |
| 2249 | struct vnode *a_vp; |
| 2250 | int a_attrnamespace; |
| 2251 | const char *a_name; |
| 2252 | struct uio *a_uio; |
| 2253 | size_t *a_size; |
| 2254 | kauth_cred_t a_cred; |
| 2255 | struct proc *a_p; |
| 2256 | } */ *ap = v; |
| 2257 | struct vnode *vp = ap->a_vp; |
| 2258 | struct inode *ip = VTOI(vp); |
| 2259 | struct ulfsmount *ump = ip->i_ump; |
| 2260 | //struct lfs *fs = ip->i_lfs; |
| 2261 | int error; |
| 2262 | |
| 2263 | if (ump->um_fstype == ULFS1) { |
| 2264 | #ifdef LFS_EXTATTR |
| 2265 | fstrans_start(vp->v_mount, FSTRANS_SHARED); |
| 2266 | error = ulfs_getextattr(ap); |
| 2267 | fstrans_done(vp->v_mount); |
| 2268 | #else |
| 2269 | error = EOPNOTSUPP; |
| 2270 | #endif |
| 2271 | return error; |
| 2272 | } |
| 2273 | |
| 2274 | /* XXX Not implemented for ULFS2 file systems. */ |
| 2275 | return (EOPNOTSUPP); |
| 2276 | } |
| 2277 | |
| 2278 | static int |
| 2279 | lfs_setextattr(void *v) |
| 2280 | { |
| 2281 | struct vop_setextattr_args /* { |
| 2282 | struct vnode *a_vp; |
| 2283 | int a_attrnamespace; |
| 2284 | const char *a_name; |
| 2285 | struct uio *a_uio; |
| 2286 | kauth_cred_t a_cred; |
| 2287 | struct proc *a_p; |
| 2288 | } */ *ap = v; |
| 2289 | struct vnode *vp = ap->a_vp; |
| 2290 | struct inode *ip = VTOI(vp); |
| 2291 | struct ulfsmount *ump = ip->i_ump; |
| 2292 | //struct lfs *fs = ip->i_lfs; |
| 2293 | int error; |
| 2294 | |
| 2295 | if (ump->um_fstype == ULFS1) { |
| 2296 | #ifdef LFS_EXTATTR |
| 2297 | fstrans_start(vp->v_mount, FSTRANS_SHARED); |
| 2298 | error = ulfs_setextattr(ap); |
| 2299 | fstrans_done(vp->v_mount); |
| 2300 | #else |
| 2301 | error = EOPNOTSUPP; |
| 2302 | #endif |
| 2303 | return error; |
| 2304 | } |
| 2305 | |
| 2306 | /* XXX Not implemented for ULFS2 file systems. */ |
| 2307 | return (EOPNOTSUPP); |
| 2308 | } |
| 2309 | |
| 2310 | static int |
| 2311 | lfs_listextattr(void *v) |
| 2312 | { |
| 2313 | struct vop_listextattr_args /* { |
| 2314 | struct vnode *a_vp; |
| 2315 | int a_attrnamespace; |
| 2316 | struct uio *a_uio; |
| 2317 | size_t *a_size; |
| 2318 | kauth_cred_t a_cred; |
| 2319 | struct proc *a_p; |
| 2320 | } */ *ap = v; |
| 2321 | struct vnode *vp = ap->a_vp; |
| 2322 | struct inode *ip = VTOI(vp); |
| 2323 | struct ulfsmount *ump = ip->i_ump; |
| 2324 | //struct lfs *fs = ip->i_lfs; |
| 2325 | int error; |
| 2326 | |
| 2327 | if (ump->um_fstype == ULFS1) { |
| 2328 | #ifdef LFS_EXTATTR |
| 2329 | fstrans_start(vp->v_mount, FSTRANS_SHARED); |
| 2330 | error = ulfs_listextattr(ap); |
| 2331 | fstrans_done(vp->v_mount); |
| 2332 | #else |
| 2333 | error = EOPNOTSUPP; |
| 2334 | #endif |
| 2335 | return error; |
| 2336 | } |
| 2337 | |
| 2338 | /* XXX Not implemented for ULFS2 file systems. */ |
| 2339 | return (EOPNOTSUPP); |
| 2340 | } |
| 2341 | |
| 2342 | static int |
| 2343 | lfs_deleteextattr(void *v) |
| 2344 | { |
| 2345 | struct vop_deleteextattr_args /* { |
| 2346 | struct vnode *a_vp; |
| 2347 | int a_attrnamespace; |
| 2348 | kauth_cred_t a_cred; |
| 2349 | struct proc *a_p; |
| 2350 | } */ *ap = v; |
| 2351 | struct vnode *vp = ap->a_vp; |
| 2352 | struct inode *ip = VTOI(vp); |
| 2353 | struct ulfsmount *ump = ip->i_ump; |
| 2354 | //struct fs *fs = ip->i_lfs; |
| 2355 | int error; |
| 2356 | |
| 2357 | if (ump->um_fstype == ULFS1) { |
| 2358 | #ifdef LFS_EXTATTR |
| 2359 | fstrans_start(vp->v_mount, FSTRANS_SHARED); |
| 2360 | error = ulfs_deleteextattr(ap); |
| 2361 | fstrans_done(vp->v_mount); |
| 2362 | #else |
| 2363 | error = EOPNOTSUPP; |
| 2364 | #endif |
| 2365 | return error; |
| 2366 | } |
| 2367 | |
| 2368 | /* XXX Not implemented for ULFS2 file systems. */ |
| 2369 | return (EOPNOTSUPP); |
| 2370 | } |
| 2371 | |
| 2372 | |