| 1 | /* $NetBSD: ffs_vnops.c,v 1.125 2014/07/25 08:20:53 dholland Exp $ */ |
| 2 | |
| 3 | /*- |
| 4 | * Copyright (c) 2008, 2009 The NetBSD Foundation, Inc. |
| 5 | * All rights reserved. |
| 6 | * |
| 7 | * This code is derived from software contributed to The NetBSD Foundation |
| 8 | * by Wasabi Systems, Inc, and by Andrew Doran. |
| 9 | * |
| 10 | * Redistribution and use in source and binary forms, with or without |
| 11 | * modification, are permitted provided that the following conditions |
| 12 | * are met: |
| 13 | * 1. Redistributions of source code must retain the above copyright |
| 14 | * notice, this list of conditions and the following disclaimer. |
| 15 | * 2. Redistributions in binary form must reproduce the above copyright |
| 16 | * notice, this list of conditions and the following disclaimer in the |
| 17 | * documentation and/or other materials provided with the distribution. |
| 18 | * |
| 19 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
| 20 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
| 21 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 22 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
| 23 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 24 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 25 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 26 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 27 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 28 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 29 | * POSSIBILITY OF SUCH DAMAGE. |
| 30 | */ |
| 31 | |
| 32 | /* |
| 33 | * Copyright (c) 1982, 1986, 1989, 1993 |
| 34 | * The Regents of the University of California. All rights reserved. |
| 35 | * |
| 36 | * Redistribution and use in source and binary forms, with or without |
| 37 | * modification, are permitted provided that the following conditions |
| 38 | * are met: |
| 39 | * 1. Redistributions of source code must retain the above copyright |
| 40 | * notice, this list of conditions and the following disclaimer. |
| 41 | * 2. Redistributions in binary form must reproduce the above copyright |
| 42 | * notice, this list of conditions and the following disclaimer in the |
| 43 | * documentation and/or other materials provided with the distribution. |
| 44 | * 3. Neither the name of the University nor the names of its contributors |
| 45 | * may be used to endorse or promote products derived from this software |
| 46 | * without specific prior written permission. |
| 47 | * |
| 48 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 49 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 50 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 51 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 52 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 53 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 54 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 55 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 56 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 57 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 58 | * SUCH DAMAGE. |
| 59 | * |
| 60 | * @(#)ffs_vnops.c 8.15 (Berkeley) 5/14/95 |
| 61 | */ |
| 62 | |
| 63 | #include <sys/cdefs.h> |
| 64 | __KERNEL_RCSID(0, "$NetBSD: ffs_vnops.c,v 1.125 2014/07/25 08:20:53 dholland Exp $" ); |
| 65 | |
| 66 | #if defined(_KERNEL_OPT) |
| 67 | #include "opt_ffs.h" |
| 68 | #include "opt_wapbl.h" |
| 69 | #endif |
| 70 | |
| 71 | #include <sys/param.h> |
| 72 | #include <sys/systm.h> |
| 73 | #include <sys/resourcevar.h> |
| 74 | #include <sys/kernel.h> |
| 75 | #include <sys/file.h> |
| 76 | #include <sys/stat.h> |
| 77 | #include <sys/buf.h> |
| 78 | #include <sys/event.h> |
| 79 | #include <sys/proc.h> |
| 80 | #include <sys/mount.h> |
| 81 | #include <sys/vnode.h> |
| 82 | #include <sys/pool.h> |
| 83 | #include <sys/signalvar.h> |
| 84 | #include <sys/kauth.h> |
| 85 | #include <sys/wapbl.h> |
| 86 | #include <sys/fstrans.h> |
| 87 | |
| 88 | #include <miscfs/fifofs/fifo.h> |
| 89 | #include <miscfs/genfs/genfs.h> |
| 90 | #include <miscfs/specfs/specdev.h> |
| 91 | |
| 92 | #include <ufs/ufs/inode.h> |
| 93 | #include <ufs/ufs/dir.h> |
| 94 | #include <ufs/ufs/ufs_extern.h> |
| 95 | #include <ufs/ufs/ufsmount.h> |
| 96 | #include <ufs/ufs/ufs_wapbl.h> |
| 97 | |
| 98 | #include <ufs/ffs/fs.h> |
| 99 | #include <ufs/ffs/ffs_extern.h> |
| 100 | |
| 101 | #include <uvm/uvm.h> |
| 102 | |
| 103 | /* Global vfs data structures for ufs. */ |
| 104 | int (**ffs_vnodeop_p)(void *); |
| 105 | const struct vnodeopv_entry_desc ffs_vnodeop_entries[] = { |
| 106 | { &vop_default_desc, vn_default_error }, |
| 107 | { &vop_lookup_desc, ufs_lookup }, /* lookup */ |
| 108 | { &vop_create_desc, ufs_create }, /* create */ |
| 109 | { &vop_whiteout_desc, ufs_whiteout }, /* whiteout */ |
| 110 | { &vop_mknod_desc, ufs_mknod }, /* mknod */ |
| 111 | { &vop_open_desc, ufs_open }, /* open */ |
| 112 | { &vop_close_desc, ufs_close }, /* close */ |
| 113 | { &vop_access_desc, ufs_access }, /* access */ |
| 114 | { &vop_getattr_desc, ufs_getattr }, /* getattr */ |
| 115 | { &vop_setattr_desc, ufs_setattr }, /* setattr */ |
| 116 | { &vop_read_desc, ffs_read }, /* read */ |
| 117 | { &vop_write_desc, ffs_write }, /* write */ |
| 118 | { &vop_fallocate_desc, genfs_eopnotsupp }, /* fallocate */ |
| 119 | { &vop_fdiscard_desc, genfs_eopnotsupp }, /* fdiscard */ |
| 120 | { &vop_ioctl_desc, ufs_ioctl }, /* ioctl */ |
| 121 | { &vop_fcntl_desc, ufs_fcntl }, /* fcntl */ |
| 122 | { &vop_poll_desc, ufs_poll }, /* poll */ |
| 123 | { &vop_kqfilter_desc, genfs_kqfilter }, /* kqfilter */ |
| 124 | { &vop_revoke_desc, ufs_revoke }, /* revoke */ |
| 125 | { &vop_mmap_desc, ufs_mmap }, /* mmap */ |
| 126 | { &vop_fsync_desc, ffs_fsync }, /* fsync */ |
| 127 | { &vop_seek_desc, ufs_seek }, /* seek */ |
| 128 | { &vop_remove_desc, ufs_remove }, /* remove */ |
| 129 | { &vop_link_desc, ufs_link }, /* link */ |
| 130 | { &vop_rename_desc, ufs_rename }, /* rename */ |
| 131 | { &vop_mkdir_desc, ufs_mkdir }, /* mkdir */ |
| 132 | { &vop_rmdir_desc, ufs_rmdir }, /* rmdir */ |
| 133 | { &vop_symlink_desc, ufs_symlink }, /* symlink */ |
| 134 | { &vop_readdir_desc, ufs_readdir }, /* readdir */ |
| 135 | { &vop_readlink_desc, ufs_readlink }, /* readlink */ |
| 136 | { &vop_abortop_desc, ufs_abortop }, /* abortop */ |
| 137 | { &vop_inactive_desc, ufs_inactive }, /* inactive */ |
| 138 | { &vop_reclaim_desc, ffs_reclaim }, /* reclaim */ |
| 139 | { &vop_lock_desc, ufs_lock }, /* lock */ |
| 140 | { &vop_unlock_desc, ufs_unlock }, /* unlock */ |
| 141 | { &vop_bmap_desc, ufs_bmap }, /* bmap */ |
| 142 | { &vop_strategy_desc, ufs_strategy }, /* strategy */ |
| 143 | { &vop_print_desc, ufs_print }, /* print */ |
| 144 | { &vop_islocked_desc, ufs_islocked }, /* islocked */ |
| 145 | { &vop_pathconf_desc, ufs_pathconf }, /* pathconf */ |
| 146 | { &vop_advlock_desc, ufs_advlock }, /* advlock */ |
| 147 | { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ |
| 148 | { &vop_getpages_desc, genfs_getpages }, /* getpages */ |
| 149 | { &vop_putpages_desc, genfs_putpages }, /* putpages */ |
| 150 | { &vop_openextattr_desc, ffs_openextattr }, /* openextattr */ |
| 151 | { &vop_closeextattr_desc, ffs_closeextattr }, /* closeextattr */ |
| 152 | { &vop_getextattr_desc, ffs_getextattr }, /* getextattr */ |
| 153 | { &vop_setextattr_desc, ffs_setextattr }, /* setextattr */ |
| 154 | { &vop_listextattr_desc, ffs_listextattr }, /* listextattr */ |
| 155 | { &vop_deleteextattr_desc, ffs_deleteextattr }, /* deleteextattr */ |
| 156 | { NULL, NULL } |
| 157 | }; |
| 158 | const struct vnodeopv_desc ffs_vnodeop_opv_desc = |
| 159 | { &ffs_vnodeop_p, ffs_vnodeop_entries }; |
| 160 | |
| 161 | int (**ffs_specop_p)(void *); |
| 162 | const struct vnodeopv_entry_desc ffs_specop_entries[] = { |
| 163 | { &vop_default_desc, vn_default_error }, |
| 164 | { &vop_lookup_desc, spec_lookup }, /* lookup */ |
| 165 | { &vop_create_desc, spec_create }, /* create */ |
| 166 | { &vop_mknod_desc, spec_mknod }, /* mknod */ |
| 167 | { &vop_open_desc, spec_open }, /* open */ |
| 168 | { &vop_close_desc, ufsspec_close }, /* close */ |
| 169 | { &vop_access_desc, ufs_access }, /* access */ |
| 170 | { &vop_getattr_desc, ufs_getattr }, /* getattr */ |
| 171 | { &vop_setattr_desc, ufs_setattr }, /* setattr */ |
| 172 | { &vop_read_desc, ufsspec_read }, /* read */ |
| 173 | { &vop_write_desc, ufsspec_write }, /* write */ |
| 174 | { &vop_fallocate_desc, spec_fallocate }, /* fallocate */ |
| 175 | { &vop_fdiscard_desc, spec_fdiscard }, /* fdiscard */ |
| 176 | { &vop_ioctl_desc, spec_ioctl }, /* ioctl */ |
| 177 | { &vop_fcntl_desc, ufs_fcntl }, /* fcntl */ |
| 178 | { &vop_poll_desc, spec_poll }, /* poll */ |
| 179 | { &vop_kqfilter_desc, spec_kqfilter }, /* kqfilter */ |
| 180 | { &vop_revoke_desc, spec_revoke }, /* revoke */ |
| 181 | { &vop_mmap_desc, spec_mmap }, /* mmap */ |
| 182 | { &vop_fsync_desc, ffs_spec_fsync }, /* fsync */ |
| 183 | { &vop_seek_desc, spec_seek }, /* seek */ |
| 184 | { &vop_remove_desc, spec_remove }, /* remove */ |
| 185 | { &vop_link_desc, spec_link }, /* link */ |
| 186 | { &vop_rename_desc, spec_rename }, /* rename */ |
| 187 | { &vop_mkdir_desc, spec_mkdir }, /* mkdir */ |
| 188 | { &vop_rmdir_desc, spec_rmdir }, /* rmdir */ |
| 189 | { &vop_symlink_desc, spec_symlink }, /* symlink */ |
| 190 | { &vop_readdir_desc, spec_readdir }, /* readdir */ |
| 191 | { &vop_readlink_desc, spec_readlink }, /* readlink */ |
| 192 | { &vop_abortop_desc, spec_abortop }, /* abortop */ |
| 193 | { &vop_inactive_desc, ufs_inactive }, /* inactive */ |
| 194 | { &vop_reclaim_desc, ffs_reclaim }, /* reclaim */ |
| 195 | { &vop_lock_desc, ufs_lock }, /* lock */ |
| 196 | { &vop_unlock_desc, ufs_unlock }, /* unlock */ |
| 197 | { &vop_bmap_desc, spec_bmap }, /* bmap */ |
| 198 | { &vop_strategy_desc, spec_strategy }, /* strategy */ |
| 199 | { &vop_print_desc, ufs_print }, /* print */ |
| 200 | { &vop_islocked_desc, ufs_islocked }, /* islocked */ |
| 201 | { &vop_pathconf_desc, spec_pathconf }, /* pathconf */ |
| 202 | { &vop_advlock_desc, spec_advlock }, /* advlock */ |
| 203 | { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ |
| 204 | { &vop_getpages_desc, spec_getpages }, /* getpages */ |
| 205 | { &vop_putpages_desc, spec_putpages }, /* putpages */ |
| 206 | { &vop_openextattr_desc, ffs_openextattr }, /* openextattr */ |
| 207 | { &vop_closeextattr_desc, ffs_closeextattr }, /* closeextattr */ |
| 208 | { &vop_getextattr_desc, ffs_getextattr }, /* getextattr */ |
| 209 | { &vop_setextattr_desc, ffs_setextattr }, /* setextattr */ |
| 210 | { &vop_listextattr_desc, ffs_listextattr }, /* listextattr */ |
| 211 | { &vop_deleteextattr_desc, ffs_deleteextattr }, /* deleteextattr */ |
| 212 | { NULL, NULL } |
| 213 | }; |
| 214 | const struct vnodeopv_desc ffs_specop_opv_desc = |
| 215 | { &ffs_specop_p, ffs_specop_entries }; |
| 216 | |
| 217 | int (**ffs_fifoop_p)(void *); |
| 218 | const struct vnodeopv_entry_desc ffs_fifoop_entries[] = { |
| 219 | { &vop_default_desc, vn_default_error }, |
| 220 | { &vop_lookup_desc, vn_fifo_bypass }, /* lookup */ |
| 221 | { &vop_create_desc, vn_fifo_bypass }, /* create */ |
| 222 | { &vop_mknod_desc, vn_fifo_bypass }, /* mknod */ |
| 223 | { &vop_open_desc, vn_fifo_bypass }, /* open */ |
| 224 | { &vop_close_desc, ufsfifo_close }, /* close */ |
| 225 | { &vop_access_desc, ufs_access }, /* access */ |
| 226 | { &vop_getattr_desc, ufs_getattr }, /* getattr */ |
| 227 | { &vop_setattr_desc, ufs_setattr }, /* setattr */ |
| 228 | { &vop_read_desc, ufsfifo_read }, /* read */ |
| 229 | { &vop_write_desc, ufsfifo_write }, /* write */ |
| 230 | { &vop_fallocate_desc, vn_fifo_bypass }, /* fallocate */ |
| 231 | { &vop_fdiscard_desc, vn_fifo_bypass }, /* fdiscard */ |
| 232 | { &vop_ioctl_desc, vn_fifo_bypass }, /* ioctl */ |
| 233 | { &vop_fcntl_desc, ufs_fcntl }, /* fcntl */ |
| 234 | { &vop_poll_desc, vn_fifo_bypass }, /* poll */ |
| 235 | { &vop_kqfilter_desc, vn_fifo_bypass }, /* kqfilter */ |
| 236 | { &vop_revoke_desc, vn_fifo_bypass }, /* revoke */ |
| 237 | { &vop_mmap_desc, vn_fifo_bypass }, /* mmap */ |
| 238 | { &vop_fsync_desc, ffs_fsync }, /* fsync */ |
| 239 | { &vop_seek_desc, vn_fifo_bypass }, /* seek */ |
| 240 | { &vop_remove_desc, vn_fifo_bypass }, /* remove */ |
| 241 | { &vop_link_desc, vn_fifo_bypass }, /* link */ |
| 242 | { &vop_rename_desc, vn_fifo_bypass }, /* rename */ |
| 243 | { &vop_mkdir_desc, vn_fifo_bypass }, /* mkdir */ |
| 244 | { &vop_rmdir_desc, vn_fifo_bypass }, /* rmdir */ |
| 245 | { &vop_symlink_desc, vn_fifo_bypass }, /* symlink */ |
| 246 | { &vop_readdir_desc, vn_fifo_bypass }, /* readdir */ |
| 247 | { &vop_readlink_desc, vn_fifo_bypass }, /* readlink */ |
| 248 | { &vop_abortop_desc, vn_fifo_bypass }, /* abortop */ |
| 249 | { &vop_inactive_desc, ufs_inactive }, /* inactive */ |
| 250 | { &vop_reclaim_desc, ffs_reclaim }, /* reclaim */ |
| 251 | { &vop_lock_desc, ufs_lock }, /* lock */ |
| 252 | { &vop_unlock_desc, ufs_unlock }, /* unlock */ |
| 253 | { &vop_bmap_desc, vn_fifo_bypass }, /* bmap */ |
| 254 | { &vop_strategy_desc, vn_fifo_bypass }, /* strategy */ |
| 255 | { &vop_print_desc, ufs_print }, /* print */ |
| 256 | { &vop_islocked_desc, ufs_islocked }, /* islocked */ |
| 257 | { &vop_pathconf_desc, vn_fifo_bypass }, /* pathconf */ |
| 258 | { &vop_advlock_desc, vn_fifo_bypass }, /* advlock */ |
| 259 | { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ |
| 260 | { &vop_putpages_desc, vn_fifo_bypass }, /* putpages */ |
| 261 | { &vop_openextattr_desc, ffs_openextattr }, /* openextattr */ |
| 262 | { &vop_closeextattr_desc, ffs_closeextattr }, /* closeextattr */ |
| 263 | { &vop_getextattr_desc, ffs_getextattr }, /* getextattr */ |
| 264 | { &vop_setextattr_desc, ffs_setextattr }, /* setextattr */ |
| 265 | { &vop_listextattr_desc, ffs_listextattr }, /* listextattr */ |
| 266 | { &vop_deleteextattr_desc, ffs_deleteextattr }, /* deleteextattr */ |
| 267 | { NULL, NULL } |
| 268 | }; |
| 269 | const struct vnodeopv_desc ffs_fifoop_opv_desc = |
| 270 | { &ffs_fifoop_p, ffs_fifoop_entries }; |
| 271 | |
| 272 | #include <ufs/ufs/ufs_readwrite.c> |
| 273 | |
| 274 | int |
| 275 | ffs_spec_fsync(void *v) |
| 276 | { |
| 277 | struct vop_fsync_args /* { |
| 278 | struct vnode *a_vp; |
| 279 | kauth_cred_t a_cred; |
| 280 | int a_flags; |
| 281 | off_t a_offlo; |
| 282 | off_t a_offhi; |
| 283 | struct lwp *a_l; |
| 284 | } */ *ap = v; |
| 285 | int error, flags, uflags; |
| 286 | struct vnode *vp; |
| 287 | struct mount *mp; |
| 288 | |
| 289 | flags = ap->a_flags; |
| 290 | uflags = UPDATE_CLOSE | ((flags & FSYNC_WAIT) ? UPDATE_WAIT : 0); |
| 291 | vp = ap->a_vp; |
| 292 | mp = vp->v_mount; |
| 293 | |
| 294 | fstrans_start(mp, FSTRANS_LAZY); |
| 295 | |
| 296 | error = spec_fsync(v); |
| 297 | if (error) |
| 298 | goto out; |
| 299 | |
| 300 | #ifdef WAPBL |
| 301 | if (mp && mp->mnt_wapbl) { |
| 302 | /* |
| 303 | * Don't bother writing out metadata if the syncer is |
| 304 | * making the request. We will let the sync vnode |
| 305 | * write it out in a single burst through a call to |
| 306 | * VFS_SYNC(). |
| 307 | */ |
| 308 | if ((flags & (FSYNC_DATAONLY | FSYNC_LAZY)) != 0) |
| 309 | goto out; |
| 310 | if ((VTOI(vp)->i_flag & (IN_ACCESS | IN_CHANGE | IN_UPDATE |
| 311 | | IN_MODIFY | IN_MODIFIED | IN_ACCESSED)) != 0) { |
| 312 | error = UFS_WAPBL_BEGIN(mp); |
| 313 | if (error != 0) |
| 314 | goto out; |
| 315 | error = ffs_update(vp, NULL, NULL, uflags); |
| 316 | UFS_WAPBL_END(mp); |
| 317 | } |
| 318 | goto out; |
| 319 | } |
| 320 | #endif /* WAPBL */ |
| 321 | |
| 322 | error = ffs_update(vp, NULL, NULL, uflags); |
| 323 | |
| 324 | out: |
| 325 | fstrans_done(mp); |
| 326 | return error; |
| 327 | } |
| 328 | |
| 329 | int |
| 330 | ffs_fsync(void *v) |
| 331 | { |
| 332 | struct vop_fsync_args /* { |
| 333 | struct vnode *a_vp; |
| 334 | kauth_cred_t a_cred; |
| 335 | int a_flags; |
| 336 | off_t a_offlo; |
| 337 | off_t a_offhi; |
| 338 | struct lwp *a_l; |
| 339 | } */ *ap = v; |
| 340 | struct buf *bp; |
| 341 | int num, error, i; |
| 342 | struct indir ia[UFS_NIADDR + 1]; |
| 343 | int bsize; |
| 344 | daddr_t blk_high; |
| 345 | struct vnode *vp; |
| 346 | struct mount *mp; |
| 347 | |
| 348 | vp = ap->a_vp; |
| 349 | mp = vp->v_mount; |
| 350 | |
| 351 | fstrans_start(mp, FSTRANS_LAZY); |
| 352 | if ((ap->a_offlo == 0 && ap->a_offhi == 0) || (vp->v_type != VREG)) { |
| 353 | error = ffs_full_fsync(vp, ap->a_flags); |
| 354 | goto out; |
| 355 | } |
| 356 | |
| 357 | bsize = mp->mnt_stat.f_iosize; |
| 358 | blk_high = ap->a_offhi / bsize; |
| 359 | if (ap->a_offhi % bsize != 0) |
| 360 | blk_high++; |
| 361 | |
| 362 | /* |
| 363 | * First, flush all pages in range. |
| 364 | */ |
| 365 | |
| 366 | mutex_enter(vp->v_interlock); |
| 367 | error = VOP_PUTPAGES(vp, trunc_page(ap->a_offlo), |
| 368 | round_page(ap->a_offhi), PGO_CLEANIT | |
| 369 | ((ap->a_flags & FSYNC_WAIT) ? PGO_SYNCIO : 0)); |
| 370 | if (error) { |
| 371 | goto out; |
| 372 | } |
| 373 | |
| 374 | #ifdef WAPBL |
| 375 | KASSERT(vp->v_type == VREG); |
| 376 | if (mp->mnt_wapbl) { |
| 377 | /* |
| 378 | * Don't bother writing out metadata if the syncer is |
| 379 | * making the request. We will let the sync vnode |
| 380 | * write it out in a single burst through a call to |
| 381 | * VFS_SYNC(). |
| 382 | */ |
| 383 | if ((ap->a_flags & (FSYNC_DATAONLY | FSYNC_LAZY)) != 0) { |
| 384 | fstrans_done(mp); |
| 385 | return 0; |
| 386 | } |
| 387 | error = 0; |
| 388 | if (vp->v_tag == VT_UFS && VTOI(vp)->i_flag & |
| 389 | (IN_ACCESS | IN_CHANGE | IN_UPDATE | IN_MODIFY | |
| 390 | IN_MODIFIED | IN_ACCESSED)) { |
| 391 | error = UFS_WAPBL_BEGIN(mp); |
| 392 | if (error) { |
| 393 | fstrans_done(mp); |
| 394 | return error; |
| 395 | } |
| 396 | error = ffs_update(vp, NULL, NULL, UPDATE_CLOSE | |
| 397 | ((ap->a_flags & FSYNC_WAIT) ? UPDATE_WAIT : 0)); |
| 398 | UFS_WAPBL_END(mp); |
| 399 | } |
| 400 | if (error || (ap->a_flags & FSYNC_NOLOG) != 0) { |
| 401 | fstrans_done(mp); |
| 402 | return error; |
| 403 | } |
| 404 | error = wapbl_flush(mp->mnt_wapbl, 0); |
| 405 | fstrans_done(mp); |
| 406 | return error; |
| 407 | } |
| 408 | #endif /* WAPBL */ |
| 409 | |
| 410 | /* |
| 411 | * Then, flush indirect blocks. |
| 412 | */ |
| 413 | |
| 414 | if (blk_high >= UFS_NDADDR) { |
| 415 | error = ufs_getlbns(vp, blk_high, ia, &num); |
| 416 | if (error) |
| 417 | goto out; |
| 418 | |
| 419 | mutex_enter(&bufcache_lock); |
| 420 | for (i = 0; i < num; i++) { |
| 421 | if ((bp = incore(vp, ia[i].in_lbn)) == NULL) |
| 422 | continue; |
| 423 | if ((bp->b_cflags & BC_BUSY) != 0 || |
| 424 | (bp->b_oflags & BO_DELWRI) == 0) |
| 425 | continue; |
| 426 | bp->b_cflags |= BC_BUSY | BC_VFLUSH; |
| 427 | mutex_exit(&bufcache_lock); |
| 428 | bawrite(bp); |
| 429 | mutex_enter(&bufcache_lock); |
| 430 | } |
| 431 | mutex_exit(&bufcache_lock); |
| 432 | } |
| 433 | |
| 434 | if (ap->a_flags & FSYNC_WAIT) { |
| 435 | mutex_enter(vp->v_interlock); |
| 436 | while (vp->v_numoutput > 0) |
| 437 | cv_wait(&vp->v_cv, vp->v_interlock); |
| 438 | mutex_exit(vp->v_interlock); |
| 439 | } |
| 440 | |
| 441 | error = ffs_update(vp, NULL, NULL, UPDATE_CLOSE | |
| 442 | (((ap->a_flags & (FSYNC_WAIT | FSYNC_DATAONLY)) == FSYNC_WAIT) |
| 443 | ? UPDATE_WAIT : 0)); |
| 444 | |
| 445 | if (error == 0 && ap->a_flags & FSYNC_CACHE) { |
| 446 | int l = 0; |
| 447 | VOP_IOCTL(VTOI(vp)->i_devvp, DIOCCACHESYNC, &l, FWRITE, |
| 448 | curlwp->l_cred); |
| 449 | } |
| 450 | |
| 451 | out: |
| 452 | fstrans_done(mp); |
| 453 | return error; |
| 454 | } |
| 455 | |
| 456 | /* |
| 457 | * Synch an open file. Called for VOP_FSYNC(). |
| 458 | */ |
| 459 | /* ARGSUSED */ |
| 460 | int |
| 461 | ffs_full_fsync(struct vnode *vp, int flags) |
| 462 | { |
| 463 | int error, i, uflags; |
| 464 | |
| 465 | KASSERT(vp->v_tag == VT_UFS); |
| 466 | KASSERT(VTOI(vp) != NULL); |
| 467 | KASSERT(vp->v_type != VCHR && vp->v_type != VBLK); |
| 468 | |
| 469 | uflags = UPDATE_CLOSE | ((flags & FSYNC_WAIT) ? UPDATE_WAIT : 0); |
| 470 | |
| 471 | #ifdef WAPBL |
| 472 | struct mount *mp = vp->v_mount; |
| 473 | if (mp && mp->mnt_wapbl) { |
| 474 | |
| 475 | /* |
| 476 | * Flush all dirty data associated with the vnode. |
| 477 | */ |
| 478 | if (vp->v_type == VREG) { |
| 479 | int pflags = PGO_ALLPAGES | PGO_CLEANIT; |
| 480 | |
| 481 | if ((flags & FSYNC_LAZY)) |
| 482 | pflags |= PGO_LAZY; |
| 483 | if ((flags & FSYNC_WAIT)) |
| 484 | pflags |= PGO_SYNCIO; |
| 485 | if (fstrans_getstate(mp) == FSTRANS_SUSPENDING) |
| 486 | pflags |= PGO_FREE; |
| 487 | mutex_enter(vp->v_interlock); |
| 488 | error = VOP_PUTPAGES(vp, 0, 0, pflags); |
| 489 | if (error) |
| 490 | return error; |
| 491 | } |
| 492 | |
| 493 | /* |
| 494 | * Don't bother writing out metadata if the syncer is |
| 495 | * making the request. We will let the sync vnode |
| 496 | * write it out in a single burst through a call to |
| 497 | * VFS_SYNC(). |
| 498 | */ |
| 499 | if ((flags & (FSYNC_DATAONLY | FSYNC_LAZY)) != 0) |
| 500 | return 0; |
| 501 | |
| 502 | if ((VTOI(vp)->i_flag & (IN_ACCESS | IN_CHANGE | IN_UPDATE |
| 503 | | IN_MODIFY | IN_MODIFIED | IN_ACCESSED)) != 0) { |
| 504 | error = UFS_WAPBL_BEGIN(mp); |
| 505 | if (error) |
| 506 | return error; |
| 507 | error = ffs_update(vp, NULL, NULL, uflags); |
| 508 | UFS_WAPBL_END(mp); |
| 509 | } else { |
| 510 | error = 0; |
| 511 | } |
| 512 | if (error || (flags & FSYNC_NOLOG) != 0) |
| 513 | return error; |
| 514 | |
| 515 | /* |
| 516 | * Don't flush the log if the vnode being flushed |
| 517 | * contains no dirty buffers that could be in the log. |
| 518 | */ |
| 519 | if (!LIST_EMPTY(&vp->v_dirtyblkhd)) { |
| 520 | error = wapbl_flush(mp->mnt_wapbl, 0); |
| 521 | if (error) |
| 522 | return error; |
| 523 | } |
| 524 | |
| 525 | if ((flags & FSYNC_WAIT) != 0) { |
| 526 | mutex_enter(vp->v_interlock); |
| 527 | while (vp->v_numoutput != 0) |
| 528 | cv_wait(&vp->v_cv, vp->v_interlock); |
| 529 | mutex_exit(vp->v_interlock); |
| 530 | } |
| 531 | |
| 532 | return error; |
| 533 | } |
| 534 | #endif /* WAPBL */ |
| 535 | |
| 536 | error = vflushbuf(vp, flags); |
| 537 | if (error == 0) |
| 538 | error = ffs_update(vp, NULL, NULL, uflags); |
| 539 | if (error == 0 && (flags & FSYNC_CACHE) != 0) { |
| 540 | i = 1; |
| 541 | (void)VOP_IOCTL(VTOI(vp)->i_devvp, DIOCCACHESYNC, &i, FWRITE, |
| 542 | kauth_cred_get()); |
| 543 | } |
| 544 | |
| 545 | return error; |
| 546 | } |
| 547 | |
| 548 | /* |
| 549 | * Reclaim an inode so that it can be used for other purposes. |
| 550 | */ |
| 551 | int |
| 552 | ffs_reclaim(void *v) |
| 553 | { |
| 554 | struct vop_reclaim_args /* { |
| 555 | struct vnode *a_vp; |
| 556 | struct lwp *a_l; |
| 557 | } */ *ap = v; |
| 558 | struct vnode *vp = ap->a_vp; |
| 559 | struct inode *ip = VTOI(vp); |
| 560 | struct mount *mp = vp->v_mount; |
| 561 | struct ufsmount *ump = ip->i_ump; |
| 562 | void *data; |
| 563 | int error; |
| 564 | |
| 565 | fstrans_start(mp, FSTRANS_LAZY); |
| 566 | /* |
| 567 | * The inode must be freed and updated before being removed |
| 568 | * from its hash chain. Other threads trying to gain a hold |
| 569 | * or lock on the inode will be stalled. |
| 570 | */ |
| 571 | error = UFS_WAPBL_BEGIN(mp); |
| 572 | if (error) { |
| 573 | fstrans_done(mp); |
| 574 | return error; |
| 575 | } |
| 576 | if (ip->i_nlink <= 0 && ip->i_omode != 0 && |
| 577 | (vp->v_mount->mnt_flag & MNT_RDONLY) == 0) |
| 578 | ffs_vfree(vp, ip->i_number, ip->i_omode); |
| 579 | UFS_WAPBL_END(mp); |
| 580 | if ((error = ufs_reclaim(vp)) != 0) { |
| 581 | fstrans_done(mp); |
| 582 | return (error); |
| 583 | } |
| 584 | if (ip->i_din.ffs1_din != NULL) { |
| 585 | if (ump->um_fstype == UFS1) |
| 586 | pool_cache_put(ffs_dinode1_cache, ip->i_din.ffs1_din); |
| 587 | else |
| 588 | pool_cache_put(ffs_dinode2_cache, ip->i_din.ffs2_din); |
| 589 | } |
| 590 | /* |
| 591 | * To interlock with ffs_sync(). |
| 592 | */ |
| 593 | genfs_node_destroy(vp); |
| 594 | mutex_enter(vp->v_interlock); |
| 595 | data = vp->v_data; |
| 596 | vp->v_data = NULL; |
| 597 | mutex_exit(vp->v_interlock); |
| 598 | |
| 599 | /* |
| 600 | * XXX MFS ends up here, too, to free an inode. Should we create |
| 601 | * XXX a separate pool for MFS inodes? |
| 602 | */ |
| 603 | pool_cache_put(ffs_inode_cache, data); |
| 604 | fstrans_done(mp); |
| 605 | return (0); |
| 606 | } |
| 607 | |
| 608 | /* |
| 609 | * Return the last logical file offset that should be written for this file |
| 610 | * if we're doing a write that ends at "size". |
| 611 | */ |
| 612 | |
| 613 | void |
| 614 | ffs_gop_size(struct vnode *vp, off_t size, off_t *eobp, int flags) |
| 615 | { |
| 616 | struct inode *ip = VTOI(vp); |
| 617 | struct fs *fs = ip->i_fs; |
| 618 | daddr_t olbn, nlbn; |
| 619 | |
| 620 | olbn = ffs_lblkno(fs, ip->i_size); |
| 621 | nlbn = ffs_lblkno(fs, size); |
| 622 | if (nlbn < UFS_NDADDR && olbn <= nlbn) { |
| 623 | *eobp = ffs_fragroundup(fs, size); |
| 624 | } else { |
| 625 | *eobp = ffs_blkroundup(fs, size); |
| 626 | } |
| 627 | } |
| 628 | |
| 629 | int |
| 630 | ffs_openextattr(void *v) |
| 631 | { |
| 632 | struct vop_openextattr_args /* { |
| 633 | struct vnode *a_vp; |
| 634 | kauth_cred_t a_cred; |
| 635 | struct proc *a_p; |
| 636 | } */ *ap = v; |
| 637 | struct inode *ip = VTOI(ap->a_vp); |
| 638 | struct fs *fs = ip->i_fs; |
| 639 | |
| 640 | /* Not supported for UFS1 file systems. */ |
| 641 | if (fs->fs_magic == FS_UFS1_MAGIC) |
| 642 | return (EOPNOTSUPP); |
| 643 | |
| 644 | /* XXX Not implemented for UFS2 file systems. */ |
| 645 | return (EOPNOTSUPP); |
| 646 | } |
| 647 | |
| 648 | int |
| 649 | ffs_closeextattr(void *v) |
| 650 | { |
| 651 | struct vop_closeextattr_args /* { |
| 652 | struct vnode *a_vp; |
| 653 | int a_commit; |
| 654 | kauth_cred_t a_cred; |
| 655 | struct proc *a_p; |
| 656 | } */ *ap = v; |
| 657 | struct inode *ip = VTOI(ap->a_vp); |
| 658 | struct fs *fs = ip->i_fs; |
| 659 | |
| 660 | /* Not supported for UFS1 file systems. */ |
| 661 | if (fs->fs_magic == FS_UFS1_MAGIC) |
| 662 | return (EOPNOTSUPP); |
| 663 | |
| 664 | /* XXX Not implemented for UFS2 file systems. */ |
| 665 | return (EOPNOTSUPP); |
| 666 | } |
| 667 | |
| 668 | int |
| 669 | ffs_getextattr(void *v) |
| 670 | { |
| 671 | struct vop_getextattr_args /* { |
| 672 | struct vnode *a_vp; |
| 673 | int a_attrnamespace; |
| 674 | const char *a_name; |
| 675 | struct uio *a_uio; |
| 676 | size_t *a_size; |
| 677 | kauth_cred_t a_cred; |
| 678 | struct proc *a_p; |
| 679 | } */ *ap = v; |
| 680 | struct vnode *vp = ap->a_vp; |
| 681 | struct inode *ip = VTOI(vp); |
| 682 | struct fs *fs = ip->i_fs; |
| 683 | |
| 684 | if (fs->fs_magic == FS_UFS1_MAGIC) { |
| 685 | #ifdef UFS_EXTATTR |
| 686 | int error; |
| 687 | |
| 688 | fstrans_start(vp->v_mount, FSTRANS_SHARED); |
| 689 | error = ufs_getextattr(ap); |
| 690 | fstrans_done(vp->v_mount); |
| 691 | return error; |
| 692 | #else |
| 693 | return (EOPNOTSUPP); |
| 694 | #endif |
| 695 | } |
| 696 | |
| 697 | /* XXX Not implemented for UFS2 file systems. */ |
| 698 | return (EOPNOTSUPP); |
| 699 | } |
| 700 | |
| 701 | int |
| 702 | ffs_setextattr(void *v) |
| 703 | { |
| 704 | struct vop_setextattr_args /* { |
| 705 | struct vnode *a_vp; |
| 706 | int a_attrnamespace; |
| 707 | const char *a_name; |
| 708 | struct uio *a_uio; |
| 709 | kauth_cred_t a_cred; |
| 710 | struct proc *a_p; |
| 711 | } */ *ap = v; |
| 712 | struct vnode *vp = ap->a_vp; |
| 713 | struct inode *ip = VTOI(vp); |
| 714 | struct fs *fs = ip->i_fs; |
| 715 | |
| 716 | if (fs->fs_magic == FS_UFS1_MAGIC) { |
| 717 | #ifdef UFS_EXTATTR |
| 718 | int error; |
| 719 | |
| 720 | fstrans_start(vp->v_mount, FSTRANS_SHARED); |
| 721 | error = ufs_setextattr(ap); |
| 722 | fstrans_done(vp->v_mount); |
| 723 | return error; |
| 724 | #else |
| 725 | return (EOPNOTSUPP); |
| 726 | #endif |
| 727 | } |
| 728 | |
| 729 | /* XXX Not implemented for UFS2 file systems. */ |
| 730 | return (EOPNOTSUPP); |
| 731 | } |
| 732 | |
| 733 | int |
| 734 | ffs_listextattr(void *v) |
| 735 | { |
| 736 | struct vop_listextattr_args /* { |
| 737 | struct vnode *a_vp; |
| 738 | int a_attrnamespace; |
| 739 | struct uio *a_uio; |
| 740 | size_t *a_size; |
| 741 | kauth_cred_t a_cred; |
| 742 | struct proc *a_p; |
| 743 | } */ *ap = v; |
| 744 | struct inode *ip = VTOI(ap->a_vp); |
| 745 | struct fs *fs = ip->i_fs; |
| 746 | |
| 747 | if (fs->fs_magic == FS_UFS1_MAGIC) { |
| 748 | #ifdef UFS_EXTATTR |
| 749 | struct vnode *vp = ap->a_vp; |
| 750 | int error; |
| 751 | |
| 752 | fstrans_start(vp->v_mount, FSTRANS_SHARED); |
| 753 | error = ufs_listextattr(ap); |
| 754 | fstrans_done(vp->v_mount); |
| 755 | return error; |
| 756 | #else |
| 757 | return (EOPNOTSUPP); |
| 758 | #endif |
| 759 | } |
| 760 | |
| 761 | /* XXX Not implemented for UFS2 file systems. */ |
| 762 | return (EOPNOTSUPP); |
| 763 | } |
| 764 | |
| 765 | int |
| 766 | ffs_deleteextattr(void *v) |
| 767 | { |
| 768 | struct vop_deleteextattr_args /* { |
| 769 | struct vnode *a_vp; |
| 770 | int a_attrnamespace; |
| 771 | kauth_cred_t a_cred; |
| 772 | struct proc *a_p; |
| 773 | } */ *ap = v; |
| 774 | struct vnode *vp = ap->a_vp; |
| 775 | struct inode *ip = VTOI(vp); |
| 776 | struct fs *fs = ip->i_fs; |
| 777 | |
| 778 | if (fs->fs_magic == FS_UFS1_MAGIC) { |
| 779 | #ifdef UFS_EXTATTR |
| 780 | int error; |
| 781 | |
| 782 | fstrans_start(vp->v_mount, FSTRANS_SHARED); |
| 783 | error = ufs_deleteextattr(ap); |
| 784 | fstrans_done(vp->v_mount); |
| 785 | return error; |
| 786 | #else |
| 787 | return (EOPNOTSUPP); |
| 788 | #endif |
| 789 | } |
| 790 | |
| 791 | /* XXX Not implemented for UFS2 file systems. */ |
| 792 | return (EOPNOTSUPP); |
| 793 | } |
| 794 | |