ffs_vnops.c revision 1.86.4.11
1 /* $NetBSD: ffs_vnops.c,v 1.86.4.11 2007/08/30 09:55:15 ad Exp $ */ 2 3 /* 4 * Copyright (c) 1982, 1986, 1989, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * @(#)ffs_vnops.c 8.15 (Berkeley) 5/14/95 32 */ 33 34 #include <sys/cdefs.h> 35 __KERNEL_RCSID(0, "$NetBSD: ffs_vnops.c,v 1.86.4.11 2007/08/30 09:55:15 ad Exp $"); 36 37 #include <sys/param.h> 38 #include <sys/systm.h> 39 #include <sys/resourcevar.h> 40 #include <sys/kernel.h> 41 #include <sys/file.h> 42 #include <sys/stat.h> 43 #include <sys/buf.h> 44 #include <sys/event.h> 45 #include <sys/proc.h> 46 #include <sys/mount.h> 47 #include <sys/vnode.h> 48 #include <sys/pool.h> 49 #include <sys/signalvar.h> 50 #include <sys/kauth.h> 51 #include <sys/fstrans.h> 52 53 #include <miscfs/fifofs/fifo.h> 54 #include <miscfs/genfs/genfs.h> 55 #include <miscfs/specfs/specdev.h> 56 57 #include <ufs/ufs/inode.h> 58 #include <ufs/ufs/dir.h> 59 #include <ufs/ufs/ufs_extern.h> 60 #include <ufs/ufs/ufsmount.h> 61 62 #include <ufs/ffs/fs.h> 63 #include <ufs/ffs/ffs_extern.h> 64 65 #include <uvm/uvm.h> 66 67 static int ffs_full_fsync(void *); 68 69 /* Global vfs data structures for ufs. */ 70 int (**ffs_vnodeop_p)(void *); 71 const struct vnodeopv_entry_desc ffs_vnodeop_entries[] = { 72 { &vop_default_desc, vn_default_error }, 73 { &vop_lookup_desc, ufs_lookup }, /* lookup */ 74 { &vop_create_desc, ufs_create }, /* create */ 75 { &vop_whiteout_desc, ufs_whiteout }, /* whiteout */ 76 { &vop_mknod_desc, ufs_mknod }, /* mknod */ 77 { &vop_open_desc, ufs_open }, /* open */ 78 { &vop_close_desc, ufs_close }, /* close */ 79 { &vop_access_desc, ufs_access }, /* access */ 80 { &vop_getattr_desc, ufs_getattr }, /* getattr */ 81 { &vop_setattr_desc, ufs_setattr }, /* setattr */ 82 { &vop_read_desc, ffs_read }, /* read */ 83 { &vop_write_desc, ffs_write }, /* write */ 84 { &vop_lease_desc, ufs_lease_check }, /* lease */ 85 { &vop_ioctl_desc, ufs_ioctl }, /* ioctl */ 86 { &vop_fcntl_desc, ufs_fcntl }, /* fcntl */ 87 { &vop_poll_desc, ufs_poll }, /* poll */ 88 { &vop_kqfilter_desc, genfs_kqfilter }, /* kqfilter */ 89 { &vop_revoke_desc, ufs_revoke }, /* revoke */ 90 { &vop_mmap_desc, ufs_mmap }, /* mmap */ 91 { &vop_fsync_desc, ffs_fsync }, /* fsync */ 92 { &vop_seek_desc, ufs_seek }, /* seek */ 93 { &vop_remove_desc, ufs_remove }, /* remove */ 94 { &vop_link_desc, ufs_link }, /* link */ 95 { &vop_rename_desc, ufs_rename }, /* rename */ 96 { &vop_mkdir_desc, ufs_mkdir }, /* mkdir */ 97 { &vop_rmdir_desc, ufs_rmdir }, /* rmdir */ 98 { &vop_symlink_desc, ufs_symlink }, /* symlink */ 99 { &vop_readdir_desc, ufs_readdir }, /* readdir */ 100 { &vop_readlink_desc, ufs_readlink }, /* readlink */ 101 { &vop_abortop_desc, ufs_abortop }, /* abortop */ 102 { &vop_inactive_desc, ufs_inactive }, /* inactive */ 103 { &vop_reclaim_desc, ffs_reclaim }, /* reclaim */ 104 { &vop_lock_desc, ffs_lock }, /* lock */ 105 { &vop_unlock_desc, ffs_unlock }, /* unlock */ 106 { &vop_bmap_desc, ufs_bmap }, /* bmap */ 107 { &vop_strategy_desc, ufs_strategy }, /* strategy */ 108 { &vop_print_desc, ufs_print }, /* print */ 109 { &vop_islocked_desc, ffs_islocked }, /* islocked */ 110 { &vop_pathconf_desc, ufs_pathconf }, /* pathconf */ 111 { &vop_advlock_desc, ufs_advlock }, /* advlock */ 112 { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ 113 { &vop_getpages_desc, genfs_getpages }, /* getpages */ 114 { &vop_putpages_desc, genfs_putpages }, /* putpages */ 115 { &vop_openextattr_desc, ffs_openextattr }, /* openextattr */ 116 { &vop_closeextattr_desc, ffs_closeextattr }, /* closeextattr */ 117 { &vop_getextattr_desc, ffs_getextattr }, /* getextattr */ 118 { &vop_setextattr_desc, ffs_setextattr }, /* setextattr */ 119 { &vop_listextattr_desc, ffs_listextattr }, /* listextattr */ 120 { &vop_deleteextattr_desc, ffs_deleteextattr }, /* deleteextattr */ 121 { NULL, NULL } 122 }; 123 const struct vnodeopv_desc ffs_vnodeop_opv_desc = 124 { &ffs_vnodeop_p, ffs_vnodeop_entries }; 125 126 int (**ffs_specop_p)(void *); 127 const struct vnodeopv_entry_desc ffs_specop_entries[] = { 128 { &vop_default_desc, vn_default_error }, 129 { &vop_lookup_desc, spec_lookup }, /* lookup */ 130 { &vop_create_desc, spec_create }, /* create */ 131 { &vop_mknod_desc, spec_mknod }, /* mknod */ 132 { &vop_open_desc, spec_open }, /* open */ 133 { &vop_close_desc, ufsspec_close }, /* close */ 134 { &vop_access_desc, ufs_access }, /* access */ 135 { &vop_getattr_desc, ufs_getattr }, /* getattr */ 136 { &vop_setattr_desc, ufs_setattr }, /* setattr */ 137 { &vop_read_desc, ufsspec_read }, /* read */ 138 { &vop_write_desc, ufsspec_write }, /* write */ 139 { &vop_lease_desc, spec_lease_check }, /* lease */ 140 { &vop_ioctl_desc, spec_ioctl }, /* ioctl */ 141 { &vop_fcntl_desc, ufs_fcntl }, /* fcntl */ 142 { &vop_poll_desc, spec_poll }, /* poll */ 143 { &vop_kqfilter_desc, spec_kqfilter }, /* kqfilter */ 144 { &vop_revoke_desc, spec_revoke }, /* revoke */ 145 { &vop_mmap_desc, spec_mmap }, /* mmap */ 146 { &vop_fsync_desc, ffs_fsync }, /* fsync */ 147 { &vop_seek_desc, spec_seek }, /* seek */ 148 { &vop_remove_desc, spec_remove }, /* remove */ 149 { &vop_link_desc, spec_link }, /* link */ 150 { &vop_rename_desc, spec_rename }, /* rename */ 151 { &vop_mkdir_desc, spec_mkdir }, /* mkdir */ 152 { &vop_rmdir_desc, spec_rmdir }, /* rmdir */ 153 { &vop_symlink_desc, spec_symlink }, /* symlink */ 154 { &vop_readdir_desc, spec_readdir }, /* readdir */ 155 { &vop_readlink_desc, spec_readlink }, /* readlink */ 156 { &vop_abortop_desc, spec_abortop }, /* abortop */ 157 { &vop_inactive_desc, ufs_inactive }, /* inactive */ 158 { &vop_reclaim_desc, ffs_reclaim }, /* reclaim */ 159 { &vop_lock_desc, ffs_lock }, /* lock */ 160 { &vop_unlock_desc, ffs_unlock }, /* unlock */ 161 { &vop_bmap_desc, spec_bmap }, /* bmap */ 162 { &vop_strategy_desc, spec_strategy }, /* strategy */ 163 { &vop_print_desc, ufs_print }, /* print */ 164 { &vop_islocked_desc, ffs_islocked }, /* islocked */ 165 { &vop_pathconf_desc, spec_pathconf }, /* pathconf */ 166 { &vop_advlock_desc, spec_advlock }, /* advlock */ 167 { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ 168 { &vop_getpages_desc, spec_getpages }, /* getpages */ 169 { &vop_putpages_desc, spec_putpages }, /* putpages */ 170 { &vop_openextattr_desc, ffs_openextattr }, /* openextattr */ 171 { &vop_closeextattr_desc, ffs_closeextattr }, /* closeextattr */ 172 { &vop_getextattr_desc, ffs_getextattr }, /* getextattr */ 173 { &vop_setextattr_desc, ffs_setextattr }, /* setextattr */ 174 { &vop_listextattr_desc, ffs_listextattr }, /* listextattr */ 175 { &vop_deleteextattr_desc, ffs_deleteextattr }, /* deleteextattr */ 176 { NULL, NULL } 177 }; 178 const struct vnodeopv_desc ffs_specop_opv_desc = 179 { &ffs_specop_p, ffs_specop_entries }; 180 181 int (**ffs_fifoop_p)(void *); 182 const struct vnodeopv_entry_desc ffs_fifoop_entries[] = { 183 { &vop_default_desc, vn_default_error }, 184 { &vop_lookup_desc, fifo_lookup }, /* lookup */ 185 { &vop_create_desc, fifo_create }, /* create */ 186 { &vop_mknod_desc, fifo_mknod }, /* mknod */ 187 { &vop_open_desc, fifo_open }, /* open */ 188 { &vop_close_desc, ufsfifo_close }, /* close */ 189 { &vop_access_desc, ufs_access }, /* access */ 190 { &vop_getattr_desc, ufs_getattr }, /* getattr */ 191 { &vop_setattr_desc, ufs_setattr }, /* setattr */ 192 { &vop_read_desc, ufsfifo_read }, /* read */ 193 { &vop_write_desc, ufsfifo_write }, /* write */ 194 { &vop_lease_desc, fifo_lease_check }, /* lease */ 195 { &vop_ioctl_desc, fifo_ioctl }, /* ioctl */ 196 { &vop_fcntl_desc, ufs_fcntl }, /* fcntl */ 197 { &vop_poll_desc, fifo_poll }, /* poll */ 198 { &vop_kqfilter_desc, fifo_kqfilter }, /* kqfilter */ 199 { &vop_revoke_desc, fifo_revoke }, /* revoke */ 200 { &vop_mmap_desc, fifo_mmap }, /* mmap */ 201 { &vop_fsync_desc, ffs_fsync }, /* fsync */ 202 { &vop_seek_desc, fifo_seek }, /* seek */ 203 { &vop_remove_desc, fifo_remove }, /* remove */ 204 { &vop_link_desc, fifo_link }, /* link */ 205 { &vop_rename_desc, fifo_rename }, /* rename */ 206 { &vop_mkdir_desc, fifo_mkdir }, /* mkdir */ 207 { &vop_rmdir_desc, fifo_rmdir }, /* rmdir */ 208 { &vop_symlink_desc, fifo_symlink }, /* symlink */ 209 { &vop_readdir_desc, fifo_readdir }, /* readdir */ 210 { &vop_readlink_desc, fifo_readlink }, /* readlink */ 211 { &vop_abortop_desc, fifo_abortop }, /* abortop */ 212 { &vop_inactive_desc, ufs_inactive }, /* inactive */ 213 { &vop_reclaim_desc, ffs_reclaim }, /* reclaim */ 214 { &vop_lock_desc, ffs_lock }, /* lock */ 215 { &vop_unlock_desc, ffs_unlock }, /* unlock */ 216 { &vop_bmap_desc, fifo_bmap }, /* bmap */ 217 { &vop_strategy_desc, fifo_strategy }, /* strategy */ 218 { &vop_print_desc, ufs_print }, /* print */ 219 { &vop_islocked_desc, ffs_islocked }, /* islocked */ 220 { &vop_pathconf_desc, fifo_pathconf }, /* pathconf */ 221 { &vop_advlock_desc, fifo_advlock }, /* advlock */ 222 { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ 223 { &vop_putpages_desc, fifo_putpages }, /* putpages */ 224 { &vop_openextattr_desc, ffs_openextattr }, /* openextattr */ 225 { &vop_closeextattr_desc, ffs_closeextattr }, /* closeextattr */ 226 { &vop_getextattr_desc, ffs_getextattr }, /* getextattr */ 227 { &vop_setextattr_desc, ffs_setextattr }, /* setextattr */ 228 { &vop_listextattr_desc, ffs_listextattr }, /* listextattr */ 229 { &vop_deleteextattr_desc, ffs_deleteextattr }, /* deleteextattr */ 230 { NULL, NULL } 231 }; 232 const struct vnodeopv_desc ffs_fifoop_opv_desc = 233 { &ffs_fifoop_p, ffs_fifoop_entries }; 234 235 #include <ufs/ufs/ufs_readwrite.c> 236 237 int 238 ffs_fsync(void *v) 239 { 240 struct vop_fsync_args /* { 241 struct vnode *a_vp; 242 kauth_cred_t a_cred; 243 int a_flags; 244 off_t a_offlo; 245 off_t a_offhi; 246 struct lwp *a_l; 247 } */ *ap = v; 248 struct buf *bp; 249 int num, error, i; 250 struct indir ia[NIADDR + 1]; 251 int bsize; 252 daddr_t blk_high; 253 struct vnode *vp; 254 255 vp = ap->a_vp; 256 257 fstrans_start(vp->v_mount, FSTRANS_LAZY); 258 /* 259 * XXX no easy way to sync a range in a file with softdep. 260 */ 261 if ((ap->a_offlo == 0 && ap->a_offhi == 0) || DOINGSOFTDEP(vp) || 262 (vp->v_type != VREG)) { 263 error = ffs_full_fsync(v); 264 goto out; 265 } 266 267 bsize = vp->v_mount->mnt_stat.f_iosize; 268 blk_high = ap->a_offhi / bsize; 269 if (ap->a_offhi % bsize != 0) 270 blk_high++; 271 272 /* 273 * First, flush all pages in range. 274 */ 275 276 mutex_enter(&vp->v_interlock); 277 error = VOP_PUTPAGES(vp, trunc_page(ap->a_offlo), 278 round_page(ap->a_offhi), PGO_CLEANIT | 279 ((ap->a_flags & FSYNC_WAIT) ? PGO_SYNCIO : 0)); 280 if (error) { 281 goto out; 282 } 283 284 /* 285 * Then, flush indirect blocks. 286 */ 287 288 if (blk_high >= NDADDR) { 289 error = ufs_getlbns(vp, blk_high, ia, &num); 290 if (error) 291 goto out; 292 293 mutex_enter(&bufcache_lock); 294 for (i = 0; i < num; i++) { 295 if ((bp = incore(vp, ia[i].in_lbn)) == NULL) 296 continue; 297 if ((bp->b_cflags & BC_BUSY) != 0 || 298 (bp->b_oflags & BO_DELWRI) == 0) 299 continue; 300 bp->b_cflags |= BC_BUSY | BC_VFLUSH; 301 mutex_exit(&bufcache_lock); 302 bawrite(bp); 303 mutex_enter(&bufcache_lock); 304 } 305 mutex_exit(&bufcache_lock); 306 } 307 308 if (ap->a_flags & FSYNC_WAIT) { 309 mutex_enter(&vp->v_interlock); 310 while (vp->v_numoutput > 0) 311 cv_wait(&vp->v_cv, &vp->v_interlock); 312 mutex_exit(&vp->v_interlock); 313 } 314 315 error = ffs_update(vp, NULL, NULL, 316 ((ap->a_flags & (FSYNC_WAIT | FSYNC_DATAONLY)) == FSYNC_WAIT) 317 ? UPDATE_WAIT : 0); 318 319 if (error == 0 && ap->a_flags & FSYNC_CACHE) { 320 int l = 0; 321 VOP_IOCTL(VTOI(vp)->i_devvp, DIOCCACHESYNC, &l, FWRITE, 322 ap->a_l->l_cred, ap->a_l); 323 } 324 325 out: 326 fstrans_done(vp->v_mount); 327 return error; 328 } 329 330 /* 331 * Synch an open file. 332 */ 333 /* ARGSUSED */ 334 static int 335 ffs_full_fsync(void *v) 336 { 337 struct vop_fsync_args /* { 338 struct vnode *a_vp; 339 kauth_cred_t a_cred; 340 int a_flags; 341 off_t a_offlo; 342 off_t a_offhi; 343 struct lwp *a_l; 344 } */ *ap = v; 345 struct vnode *vp = ap->a_vp; 346 struct buf *bp, *nbp; 347 int error, passes, skipmeta, inodedeps_only, waitfor; 348 349 if (vp->v_type == VBLK && 350 vp->v_specmountpoint != NULL && 351 (vp->v_specmountpoint->mnt_flag & MNT_SOFTDEP)) 352 softdep_fsync_mountdev(vp); 353 354 mutex_enter(&vp->v_interlock); 355 356 inodedeps_only = DOINGSOFTDEP(vp) && (ap->a_flags & FSYNC_RECLAIM) 357 && UVM_OBJ_IS_CLEAN(&vp->v_uobj) && LIST_EMPTY(&vp->v_dirtyblkhd); 358 359 /* 360 * Flush all dirty data associated with a vnode. 361 */ 362 363 if (vp->v_type == VREG || vp->v_type == VBLK) { 364 error = VOP_PUTPAGES(vp, 0, 0, PGO_ALLPAGES | PGO_CLEANIT | 365 ((ap->a_flags & FSYNC_WAIT) ? PGO_SYNCIO : 0) | 366 (fstrans_getstate(vp->v_mount) == FSTRANS_SUSPENDING ? 367 PGO_FREE : 0)); 368 if (error) { 369 return error; 370 } 371 } else 372 mutex_exit(&vp->v_interlock); 373 374 passes = NIADDR + 1; 375 skipmeta = 0; 376 if (ap->a_flags & FSYNC_WAIT) 377 skipmeta = 1; 378 379 loop: 380 mutex_enter(&bufcache_lock); 381 LIST_FOREACH(bp, &vp->v_dirtyblkhd, b_vnbufs) { 382 bp->b_cflags &= ~BC_SCANNED; 383 } 384 for (bp = LIST_FIRST(&vp->v_dirtyblkhd); bp; bp = nbp) { 385 nbp = LIST_NEXT(bp, b_vnbufs); 386 if (bp->b_cflags & (BC_BUSY | BC_SCANNED)) 387 continue; 388 if ((bp->b_oflags & BO_DELWRI) == 0) 389 panic("ffs_fsync: not dirty"); 390 if (skipmeta && bp->b_lblkno < 0) 391 continue; 392 bp->b_cflags |= BC_BUSY | BC_VFLUSH | BC_SCANNED; 393 mutex_exit(&bufcache_lock); 394 /* 395 * On our final pass through, do all I/O synchronously 396 * so that we can find out if our flush is failing 397 * because of write errors. 398 */ 399 if (passes > 0 || !(ap->a_flags & FSYNC_WAIT)) 400 (void) bawrite(bp); 401 else if ((error = bwrite(bp)) != 0) 402 return (error); 403 /* 404 * Since we unlocked during the I/O, we need 405 * to start from a known point. 406 */ 407 mutex_enter(&bufcache_lock); 408 nbp = LIST_FIRST(&vp->v_dirtyblkhd); 409 } 410 mutex_exit(&bufcache_lock); 411 if (skipmeta) { 412 skipmeta = 0; 413 goto loop; 414 } 415 416 if (ap->a_flags & FSYNC_WAIT) { 417 mutex_enter(&vp->v_interlock); 418 while (vp->v_numoutput) { 419 cv_wait(&vp->v_cv, &vp->v_interlock); 420 } 421 mutex_exit(&vp->v_interlock); 422 423 /* 424 * Ensure that any filesystem metadata associated 425 * with the vnode has been written. 426 */ 427 if ((error = softdep_sync_metadata(ap)) != 0) 428 return (error); 429 430 if (!LIST_EMPTY(&vp->v_dirtyblkhd)) { 431 /* 432 * Block devices associated with filesystems may 433 * have new I/O requests posted for them even if 434 * the vnode is locked, so no amount of trying will 435 * get them clean. Thus we give block devices a 436 * good effort, then just give up. For all other file 437 * types, go around and try again until it is clean. 438 */ 439 if (passes > 0) { 440 passes--; 441 goto loop; 442 } 443 #ifdef DIAGNOSTIC 444 if (vp->v_type != VBLK) 445 vprint("ffs_fsync: dirty", vp); 446 #endif 447 } 448 } 449 450 if (inodedeps_only) 451 waitfor = 0; 452 else 453 waitfor = (ap->a_flags & FSYNC_WAIT) ? UPDATE_WAIT : 0; 454 error = ffs_update(vp, NULL, NULL, waitfor); 455 456 if (error == 0 && ap->a_flags & FSYNC_CACHE) { 457 int i = 0; 458 VOP_IOCTL(VTOI(vp)->i_devvp, DIOCCACHESYNC, &i, FWRITE, 459 ap->a_l->l_cred, ap->a_l); 460 } 461 462 return error; 463 } 464 465 /* 466 * Reclaim an inode so that it can be used for other purposes. 467 */ 468 int 469 ffs_reclaim(void *v) 470 { 471 struct vop_reclaim_args /* { 472 struct vnode *a_vp; 473 struct lwp *a_l; 474 } */ *ap = v; 475 struct vnode *vp = ap->a_vp; 476 struct inode *ip = VTOI(vp); 477 struct mount *mp = vp->v_mount; 478 struct ufsmount *ump = ip->i_ump; 479 void *data; 480 int error; 481 482 fstrans_start(mp, FSTRANS_LAZY); 483 if ((error = ufs_reclaim(vp, ap->a_l)) != 0) { 484 fstrans_done(mp); 485 return (error); 486 } 487 if (ip->i_din.ffs1_din != NULL) { 488 if (ump->um_fstype == UFS1) 489 pool_put(&ffs_dinode1_pool, ip->i_din.ffs1_din); 490 else 491 pool_put(&ffs_dinode2_pool, ip->i_din.ffs2_din); 492 } 493 /* 494 * To interlock with ffs_sync(). 495 */ 496 genfs_node_destroy(vp); 497 mutex_enter(&vp->v_interlock); 498 data = vp->v_data; 499 vp->v_data = NULL; 500 mutex_exit(&vp->v_interlock); 501 502 /* 503 * XXX MFS ends up here, too, to free an inode. Should we create 504 * XXX a separate pool for MFS inodes? 505 */ 506 pool_put(&ffs_inode_pool, data); 507 fstrans_done(mp); 508 return (0); 509 } 510 511 #if 0 512 int 513 ffs_getpages(void *v) 514 { 515 struct vop_getpages_args /* { 516 struct vnode *a_vp; 517 voff_t a_offset; 518 struct vm_page **a_m; 519 int *a_count; 520 int a_centeridx; 521 vm_prot_t a_access_type; 522 int a_advice; 523 int a_flags; 524 } */ *ap = v; 525 struct vnode *vp = ap->a_vp; 526 struct inode *ip = VTOI(vp); 527 struct fs *fs = ip->i_fs; 528 529 /* 530 * don't allow a softdep write to create pages for only part of a block. 531 * the dependency tracking requires that all pages be in memory for 532 * a block involved in a dependency. 533 */ 534 535 if (ap->a_flags & PGO_OVERWRITE && 536 (blkoff(fs, ap->a_offset) != 0 || 537 blkoff(fs, *ap->a_count << PAGE_SHIFT) != 0) && 538 DOINGSOFTDEP(ap->a_vp)) { 539 if ((ap->a_flags & PGO_LOCKED) == 0) { 540 mutex_exit(&vp->v_interlock); 541 } 542 return EINVAL; 543 } 544 return genfs_getpages(v); 545 } 546 #endif 547 548 /* 549 * Return the last logical file offset that should be written for this file 550 * if we're doing a write that ends at "size". 551 */ 552 553 void 554 ffs_gop_size(struct vnode *vp, off_t size, off_t *eobp, int flags) 555 { 556 struct inode *ip = VTOI(vp); 557 struct fs *fs = ip->i_fs; 558 daddr_t olbn, nlbn; 559 560 olbn = lblkno(fs, ip->i_size); 561 nlbn = lblkno(fs, size); 562 if (nlbn < NDADDR && olbn <= nlbn) { 563 *eobp = fragroundup(fs, size); 564 } else { 565 *eobp = blkroundup(fs, size); 566 } 567 } 568 569 int 570 ffs_openextattr(void *v) 571 { 572 struct vop_openextattr_args /* { 573 struct vnode *a_vp; 574 kauth_cred_t a_cred; 575 struct proc *a_p; 576 } */ *ap = v; 577 struct inode *ip = VTOI(ap->a_vp); 578 struct fs *fs = ip->i_fs; 579 580 /* Not supported for UFS1 file systems. */ 581 if (fs->fs_magic == FS_UFS1_MAGIC) 582 return (EOPNOTSUPP); 583 584 /* XXX Not implemented for UFS2 file systems. */ 585 return (EOPNOTSUPP); 586 } 587 588 int 589 ffs_closeextattr(void *v) 590 { 591 struct vop_closeextattr_args /* { 592 struct vnode *a_vp; 593 int a_commit; 594 kauth_cred_t a_cred; 595 struct proc *a_p; 596 } */ *ap = v; 597 struct inode *ip = VTOI(ap->a_vp); 598 struct fs *fs = ip->i_fs; 599 600 /* Not supported for UFS1 file systems. */ 601 if (fs->fs_magic == FS_UFS1_MAGIC) 602 return (EOPNOTSUPP); 603 604 /* XXX Not implemented for UFS2 file systems. */ 605 return (EOPNOTSUPP); 606 } 607 608 int 609 ffs_getextattr(void *v) 610 { 611 struct vop_getextattr_args /* { 612 struct vnode *a_vp; 613 int a_attrnamespace; 614 const char *a_name; 615 struct uio *a_uio; 616 size_t *a_size; 617 kauth_cred_t a_cred; 618 struct proc *a_p; 619 } */ *ap = v; 620 struct vnode *vp = ap->a_vp; 621 struct inode *ip = VTOI(vp); 622 struct fs *fs = ip->i_fs; 623 624 if (fs->fs_magic == FS_UFS1_MAGIC) { 625 #ifdef UFS_EXTATTR 626 int error; 627 628 fstrans_start(vp->v_mount, FSTRANS_SHARED); 629 error = ufs_getextattr(ap); 630 fstrans_done(vp->v_mount); 631 return error; 632 #else 633 return (EOPNOTSUPP); 634 #endif 635 } 636 637 /* XXX Not implemented for UFS2 file systems. */ 638 return (EOPNOTSUPP); 639 } 640 641 int 642 ffs_setextattr(void *v) 643 { 644 struct vop_setextattr_args /* { 645 struct vnode *a_vp; 646 int a_attrnamespace; 647 const char *a_name; 648 struct uio *a_uio; 649 kauth_cred_t a_cred; 650 struct proc *a_p; 651 } */ *ap = v; 652 struct vnode *vp = ap->a_vp; 653 struct inode *ip = VTOI(vp); 654 struct fs *fs = ip->i_fs; 655 656 if (fs->fs_magic == FS_UFS1_MAGIC) { 657 #ifdef UFS_EXTATTR 658 int error; 659 660 fstrans_start(vp->v_mount, FSTRANS_SHARED); 661 error = ufs_setextattr(ap); 662 fstrans_done(vp->v_mount); 663 return error; 664 #else 665 return (EOPNOTSUPP); 666 #endif 667 } 668 669 /* XXX Not implemented for UFS2 file systems. */ 670 return (EOPNOTSUPP); 671 } 672 673 int 674 ffs_listextattr(void *v) 675 { 676 struct vop_listextattr_args /* { 677 struct vnode *a_vp; 678 int a_attrnamespace; 679 struct uio *a_uio; 680 size_t *a_size; 681 kauth_cred_t a_cred; 682 struct proc *a_p; 683 } */ *ap = v; 684 struct inode *ip = VTOI(ap->a_vp); 685 struct fs *fs = ip->i_fs; 686 687 /* Not supported for UFS1 file systems. */ 688 if (fs->fs_magic == FS_UFS1_MAGIC) 689 return (EOPNOTSUPP); 690 691 /* XXX Not implemented for UFS2 file systems. */ 692 return (EOPNOTSUPP); 693 } 694 695 int 696 ffs_deleteextattr(void *v) 697 { 698 struct vop_deleteextattr_args /* { 699 struct vnode *a_vp; 700 int a_attrnamespace; 701 kauth_cred_t a_cred; 702 struct proc *a_p; 703 } */ *ap = v; 704 struct vnode *vp = ap->a_vp; 705 struct inode *ip = VTOI(vp); 706 struct fs *fs = ip->i_fs; 707 708 if (fs->fs_magic == FS_UFS1_MAGIC) { 709 #ifdef UFS_EXTATTR 710 int error; 711 712 fstrans_start(vp->v_mount, FSTRANS_SHARED); 713 error = ufs_deleteextattr(ap); 714 fstrans_done(vp->v_mount); 715 return error; 716 #else 717 return (EOPNOTSUPP); 718 #endif 719 } 720 721 /* XXX Not implemented for UFS2 file systems. */ 722 return (EOPNOTSUPP); 723 } 724 725 /* 726 * Lock the node. 727 */ 728 int 729 ffs_lock(void *v) 730 { 731 struct vop_lock_args /* { 732 struct vnode *a_vp; 733 int a_flags; 734 } */ *ap = v; 735 struct vnode *vp = ap->a_vp; 736 struct mount *mp = vp->v_mount; 737 738 /* 739 * Fake lock during file system suspension. 740 */ 741 if ((vp->v_type == VREG || vp->v_type == VDIR) && 742 fstrans_is_owner(mp) && 743 fstrans_getstate(mp) == FSTRANS_SUSPENDING) { 744 if ((ap->a_flags & LK_INTERLOCK) != 0) 745 mutex_exit(&vp->v_interlock); 746 return 0; 747 } 748 return (lockmgr(vp->v_vnlock, ap->a_flags, &vp->v_interlock)); 749 } 750 751 /* 752 * Unlock the node. 753 */ 754 int 755 ffs_unlock(void *v) 756 { 757 struct vop_unlock_args /* { 758 struct vnode *a_vp; 759 int a_flags; 760 } */ *ap = v; 761 struct vnode *vp = ap->a_vp; 762 struct mount *mp = vp->v_mount; 763 764 /* 765 * Fake unlock during file system suspension. 766 */ 767 if ((vp->v_type == VREG || vp->v_type == VDIR) && 768 fstrans_is_owner(mp) && 769 fstrans_getstate(mp) == FSTRANS_SUSPENDING) { 770 if ((ap->a_flags & LK_INTERLOCK) != 0) 771 mutex_exit(&vp->v_interlock); 772 return 0; 773 } 774 return (lockmgr(vp->v_vnlock, ap->a_flags | LK_RELEASE, 775 &vp->v_interlock)); 776 } 777 778 /* 779 * Return whether or not the node is locked. 780 */ 781 int 782 ffs_islocked(void *v) 783 { 784 struct vop_islocked_args /* { 785 struct vnode *a_vp; 786 } */ *ap = v; 787 struct vnode *vp = ap->a_vp; 788 789 return (lockstatus(vp->v_vnlock)); 790 } 791
Indexes created Wed Oct 22 13:09:56 GMT 2025