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sys/ufs/ffs/ffs_vnops.c
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1 /* $NetBSD: ffs_vnops.c,v 1.83 2006/11/16 01:33:53 christos 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 1.83 2006/11/16 01:33:53 christos 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 52 #include <miscfs/fifofs/fifo.h> 53 #include <miscfs/genfs/genfs.h> 54 #include <miscfs/specfs/specdev.h> 55 56 #include <ufs/ufs/inode.h> 57 #include <ufs/ufs/dir.h> 58 #include <ufs/ufs/ufs_extern.h> 59 #include <ufs/ufs/ufsmount.h> 60 61 #include <ufs/ffs/fs.h> 62 #include <ufs/ffs/ffs_extern.h> 63 64 #include <uvm/uvm.h> 65 66 static int ffs_full_fsync(void *); 67 68 /* Global vfs data structures for ufs. */ 69 int (**ffs_vnodeop_p)(void *); 70 const struct vnodeopv_entry_desc ffs_vnodeop_entries[] = { 71 { &vop_default_desc, vn_default_error }, 72 { &vop_lookup_desc, ufs_lookup }, /* lookup */ 73 { &vop_create_desc, ufs_create }, /* create */ 74 { &vop_whiteout_desc, ufs_whiteout }, /* whiteout */ 75 { &vop_mknod_desc, ufs_mknod }, /* mknod */ 76 { &vop_open_desc, ufs_open }, /* open */ 77 { &vop_close_desc, ufs_close }, /* close */ 78 { &vop_access_desc, ufs_access }, /* access */ 79 { &vop_getattr_desc, ufs_getattr }, /* getattr */ 80 { &vop_setattr_desc, ufs_setattr }, /* setattr */ 81 { &vop_read_desc, ffs_read }, /* read */ 82 { &vop_write_desc, ffs_write }, /* write */ 83 { &vop_lease_desc, ufs_lease_check }, /* lease */ 84 { &vop_ioctl_desc, ufs_ioctl }, /* ioctl */ 85 { &vop_fcntl_desc, ufs_fcntl }, /* fcntl */ 86 { &vop_poll_desc, ufs_poll }, /* poll */ 87 { &vop_kqfilter_desc, genfs_kqfilter }, /* kqfilter */ 88 { &vop_revoke_desc, ufs_revoke }, /* revoke */ 89 { &vop_mmap_desc, ufs_mmap }, /* mmap */ 90 { &vop_fsync_desc, ffs_fsync }, /* fsync */ 91 { &vop_seek_desc, ufs_seek }, /* seek */ 92 { &vop_remove_desc, ufs_remove }, /* remove */ 93 { &vop_link_desc, ufs_link }, /* link */ 94 { &vop_rename_desc, ufs_rename }, /* rename */ 95 { &vop_mkdir_desc, ufs_mkdir }, /* mkdir */ 96 { &vop_rmdir_desc, ufs_rmdir }, /* rmdir */ 97 { &vop_symlink_desc, ufs_symlink }, /* symlink */ 98 { &vop_readdir_desc, ufs_readdir }, /* readdir */ 99 { &vop_readlink_desc, ufs_readlink }, /* readlink */ 100 { &vop_abortop_desc, ufs_abortop }, /* abortop */ 101 { &vop_inactive_desc, ufs_inactive }, /* inactive */ 102 { &vop_reclaim_desc, ffs_reclaim }, /* reclaim */ 103 { &vop_lock_desc, ufs_lock }, /* lock */ 104 { &vop_unlock_desc, ufs_unlock }, /* unlock */ 105 { &vop_bmap_desc, ufs_bmap }, /* bmap */ 106 { &vop_strategy_desc, ufs_strategy }, /* strategy */ 107 { &vop_print_desc, ufs_print }, /* print */ 108 { &vop_islocked_desc, ufs_islocked }, /* islocked */ 109 { &vop_pathconf_desc, ufs_pathconf }, /* pathconf */ 110 { &vop_advlock_desc, ufs_advlock }, /* advlock */ 111 { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ 112 { &vop_getpages_desc, ffs_getpages }, /* getpages */ 113 { &vop_putpages_desc, genfs_putpages }, /* putpages */ 114 { &vop_openextattr_desc, ffs_openextattr }, /* openextattr */ 115 { &vop_closeextattr_desc, ffs_closeextattr }, /* closeextattr */ 116 { &vop_getextattr_desc, ffs_getextattr }, /* getextattr */ 117 { &vop_setextattr_desc, ffs_setextattr }, /* setextattr */ 118 { &vop_listextattr_desc, ffs_listextattr }, /* listextattr */ 119 { &vop_deleteextattr_desc, ffs_deleteextattr }, /* deleteextattr */ 120 { NULL, NULL } 121 }; 122 const struct vnodeopv_desc ffs_vnodeop_opv_desc = 123 { &ffs_vnodeop_p, ffs_vnodeop_entries }; 124 125 int (**ffs_specop_p)(void *); 126 const struct vnodeopv_entry_desc ffs_specop_entries[] = { 127 { &vop_default_desc, vn_default_error }, 128 { &vop_lookup_desc, spec_lookup }, /* lookup */ 129 { &vop_create_desc, spec_create }, /* create */ 130 { &vop_mknod_desc, spec_mknod }, /* mknod */ 131 { &vop_open_desc, spec_open }, /* open */ 132 { &vop_close_desc, ufsspec_close }, /* close */ 133 { &vop_access_desc, ufs_access }, /* access */ 134 { &vop_getattr_desc, ufs_getattr }, /* getattr */ 135 { &vop_setattr_desc, ufs_setattr }, /* setattr */ 136 { &vop_read_desc, ufsspec_read }, /* read */ 137 { &vop_write_desc, ufsspec_write }, /* write */ 138 { &vop_lease_desc, spec_lease_check }, /* lease */ 139 { &vop_ioctl_desc, spec_ioctl }, /* ioctl */ 140 { &vop_fcntl_desc, ufs_fcntl }, /* fcntl */ 141 { &vop_poll_desc, spec_poll }, /* poll */ 142 { &vop_kqfilter_desc, spec_kqfilter }, /* kqfilter */ 143 { &vop_revoke_desc, spec_revoke }, /* revoke */ 144 { &vop_mmap_desc, spec_mmap }, /* mmap */ 145 { &vop_fsync_desc, ffs_fsync }, /* fsync */ 146 { &vop_seek_desc, spec_seek }, /* seek */ 147 { &vop_remove_desc, spec_remove }, /* remove */ 148 { &vop_link_desc, spec_link }, /* link */ 149 { &vop_rename_desc, spec_rename }, /* rename */ 150 { &vop_mkdir_desc, spec_mkdir }, /* mkdir */ 151 { &vop_rmdir_desc, spec_rmdir }, /* rmdir */ 152 { &vop_symlink_desc, spec_symlink }, /* symlink */ 153 { &vop_readdir_desc, spec_readdir }, /* readdir */ 154 { &vop_readlink_desc, spec_readlink }, /* readlink */ 155 { &vop_abortop_desc, spec_abortop }, /* abortop */ 156 { &vop_inactive_desc, ufs_inactive }, /* inactive */ 157 { &vop_reclaim_desc, ffs_reclaim }, /* reclaim */ 158 { &vop_lock_desc, ufs_lock }, /* lock */ 159 { &vop_unlock_desc, ufs_unlock }, /* unlock */ 160 { &vop_bmap_desc, spec_bmap }, /* bmap */ 161 { &vop_strategy_desc, spec_strategy }, /* strategy */ 162 { &vop_print_desc, ufs_print }, /* print */ 163 { &vop_islocked_desc, ufs_islocked }, /* islocked */ 164 { &vop_pathconf_desc, spec_pathconf }, /* pathconf */ 165 { &vop_advlock_desc, spec_advlock }, /* advlock */ 166 { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ 167 { &vop_getpages_desc, spec_getpages }, /* getpages */ 168 { &vop_putpages_desc, spec_putpages }, /* putpages */ 169 { &vop_openextattr_desc, ffs_openextattr }, /* openextattr */ 170 { &vop_closeextattr_desc, ffs_closeextattr }, /* closeextattr */ 171 { &vop_getextattr_desc, ffs_getextattr }, /* getextattr */ 172 { &vop_setextattr_desc, ffs_setextattr }, /* setextattr */ 173 { &vop_listextattr_desc, ffs_listextattr }, /* listextattr */ 174 { &vop_deleteextattr_desc, ffs_deleteextattr }, /* deleteextattr */ 175 { NULL, NULL } 176 }; 177 const struct vnodeopv_desc ffs_specop_opv_desc = 178 { &ffs_specop_p, ffs_specop_entries }; 179 180 int (**ffs_fifoop_p)(void *); 181 const struct vnodeopv_entry_desc ffs_fifoop_entries[] = { 182 { &vop_default_desc, vn_default_error }, 183 { &vop_lookup_desc, fifo_lookup }, /* lookup */ 184 { &vop_create_desc, fifo_create }, /* create */ 185 { &vop_mknod_desc, fifo_mknod }, /* mknod */ 186 { &vop_open_desc, fifo_open }, /* open */ 187 { &vop_close_desc, ufsfifo_close }, /* close */ 188 { &vop_access_desc, ufs_access }, /* access */ 189 { &vop_getattr_desc, ufs_getattr }, /* getattr */ 190 { &vop_setattr_desc, ufs_setattr }, /* setattr */ 191 { &vop_read_desc, ufsfifo_read }, /* read */ 192 { &vop_write_desc, ufsfifo_write }, /* write */ 193 { &vop_lease_desc, fifo_lease_check }, /* lease */ 194 { &vop_ioctl_desc, fifo_ioctl }, /* ioctl */ 195 { &vop_fcntl_desc, ufs_fcntl }, /* fcntl */ 196 { &vop_poll_desc, fifo_poll }, /* poll */ 197 { &vop_kqfilter_desc, fifo_kqfilter }, /* kqfilter */ 198 { &vop_revoke_desc, fifo_revoke }, /* revoke */ 199 { &vop_mmap_desc, fifo_mmap }, /* mmap */ 200 { &vop_fsync_desc, ffs_fsync }, /* fsync */ 201 { &vop_seek_desc, fifo_seek }, /* seek */ 202 { &vop_remove_desc, fifo_remove }, /* remove */ 203 { &vop_link_desc, fifo_link }, /* link */ 204 { &vop_rename_desc, fifo_rename }, /* rename */ 205 { &vop_mkdir_desc, fifo_mkdir }, /* mkdir */ 206 { &vop_rmdir_desc, fifo_rmdir }, /* rmdir */ 207 { &vop_symlink_desc, fifo_symlink }, /* symlink */ 208 { &vop_readdir_desc, fifo_readdir }, /* readdir */ 209 { &vop_readlink_desc, fifo_readlink }, /* readlink */ 210 { &vop_abortop_desc, fifo_abortop }, /* abortop */ 211 { &vop_inactive_desc, ufs_inactive }, /* inactive */ 212 { &vop_reclaim_desc, ffs_reclaim }, /* reclaim */ 213 { &vop_lock_desc, ufs_lock }, /* lock */ 214 { &vop_unlock_desc, ufs_unlock }, /* unlock */ 215 { &vop_bmap_desc, fifo_bmap }, /* bmap */ 216 { &vop_strategy_desc, fifo_strategy }, /* strategy */ 217 { &vop_print_desc, ufs_print }, /* print */ 218 { &vop_islocked_desc, ufs_islocked }, /* islocked */ 219 { &vop_pathconf_desc, fifo_pathconf }, /* pathconf */ 220 { &vop_advlock_desc, fifo_advlock }, /* advlock */ 221 { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ 222 { &vop_putpages_desc, fifo_putpages }, /* putpages */ 223 { &vop_openextattr_desc, ffs_openextattr }, /* openextattr */ 224 { &vop_closeextattr_desc, ffs_closeextattr }, /* closeextattr */ 225 { &vop_getextattr_desc, ffs_getextattr }, /* getextattr */ 226 { &vop_setextattr_desc, ffs_setextattr }, /* setextattr */ 227 { &vop_listextattr_desc, ffs_listextattr }, /* listextattr */ 228 { &vop_deleteextattr_desc, ffs_deleteextattr }, /* deleteextattr */ 229 { NULL, NULL } 230 }; 231 const struct vnodeopv_desc ffs_fifoop_opv_desc = 232 { &ffs_fifoop_p, ffs_fifoop_entries }; 233 234 #include <ufs/ufs/ufs_readwrite.c> 235 236 int 237 ffs_fsync(void *v) 238 { 239 struct vop_fsync_args /* { 240 struct vnode *a_vp; 241 kauth_cred_t a_cred; 242 int a_flags; 243 off_t a_offlo; 244 off_t a_offhi; 245 struct lwp *a_l; 246 } */ *ap = v; 247 struct buf *bp; 248 int s, num, error, i; 249 struct indir ia[NIADDR + 1]; 250 int bsize; 251 daddr_t blk_high; 252 struct vnode *vp; 253 254 /* 255 * XXX no easy way to sync a range in a file with softdep. 256 */ 257 if ((ap->a_offlo == 0 && ap->a_offhi == 0) || DOINGSOFTDEP(ap->a_vp) || 258 (ap->a_vp->v_type != VREG)) 259 return ffs_full_fsync(v); 260 261 vp = ap->a_vp; 262 263 bsize = ap->a_vp->v_mount->mnt_stat.f_iosize; 264 blk_high = ap->a_offhi / bsize; 265 if (ap->a_offhi % bsize != 0) 266 blk_high++; 267 268 /* 269 * First, flush all pages in range. 270 */ 271 272 simple_lock(&vp->v_interlock); 273 error = VOP_PUTPAGES(vp, trunc_page(ap->a_offlo), 274 round_page(ap->a_offhi), PGO_CLEANIT | 275 ((ap->a_flags & FSYNC_WAIT) ? PGO_SYNCIO : 0)); 276 if (error) { 277 return error; 278 } 279 280 /* 281 * Then, flush indirect blocks. 282 */ 283 284 s = splbio(); 285 if (blk_high >= NDADDR) { 286 error = ufs_getlbns(vp, blk_high, ia, &num); 287 if (error) { 288 splx(s); 289 return error; 290 } 291 for (i = 0; i < num; i++) { 292 bp = incore(vp, ia[i].in_lbn); 293 if (bp != NULL) { 294 simple_lock(&bp->b_interlock); 295 if (!(bp->b_flags & B_BUSY) && (bp->b_flags & B_DELWRI)) { 296 bp->b_flags |= B_BUSY | B_VFLUSH; 297 simple_unlock(&bp->b_interlock); 298 splx(s); 299 bawrite(bp); 300 s = splbio(); 301 } else { 302 simple_unlock(&bp->b_interlock); 303 } 304 } 305 } 306 } 307 308 if (ap->a_flags & FSYNC_WAIT) { 309 simple_lock(&global_v_numoutput_slock); 310 while (vp->v_numoutput > 0) { 311 vp->v_flag |= VBWAIT; 312 ltsleep(&vp->v_numoutput, PRIBIO + 1, "fsync_range", 0, 313 &global_v_numoutput_slock); 314 } 315 simple_unlock(&global_v_numoutput_slock); 316 } 317 splx(s); 318 319 error = ffs_update(vp, NULL, NULL, 320 ((ap->a_flags & (FSYNC_WAIT | FSYNC_DATAONLY)) == FSYNC_WAIT) 321 ? UPDATE_WAIT : 0); 322 323 if (error == 0 && ap->a_flags & FSYNC_CACHE) { 324 int l = 0; 325 VOP_IOCTL(VTOI(vp)->i_devvp, DIOCCACHESYNC, &l, FWRITE, 326 ap->a_l->l_cred, ap->a_l); 327 } 328 329 return error; 330 } 331 332 /* 333 * Synch an open file. 334 */ 335 /* ARGSUSED */ 336 static int 337 ffs_full_fsync(void *v) 338 { 339 struct vop_fsync_args /* { 340 struct vnode *a_vp; 341 kauth_cred_t a_cred; 342 int a_flags; 343 off_t a_offlo; 344 off_t a_offhi; 345 struct lwp *a_l; 346 } */ *ap = v; 347 struct vnode *vp = ap->a_vp; 348 struct buf *bp, *nbp; 349 int s, error, passes, skipmeta, inodedeps_only, waitfor; 350 351 if (vp->v_type == VBLK && 352 vp->v_specmountpoint != NULL && 353 (vp->v_specmountpoint->mnt_flag & MNT_SOFTDEP)) 354 softdep_fsync_mountdev(vp); 355 356 inodedeps_only = DOINGSOFTDEP(vp) && (ap->a_flags & FSYNC_RECLAIM) 357 && vp->v_uobj.uo_npages == 0 && 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 simple_lock(&vp->v_interlock); 365 error = VOP_PUTPAGES(vp, 0, 0, PGO_ALLPAGES | PGO_CLEANIT | 366 ((ap->a_flags & FSYNC_WAIT) ? PGO_SYNCIO : 0)); 367 if (error) { 368 return error; 369 } 370 } 371 372 passes = NIADDR + 1; 373 skipmeta = 0; 374 if (ap->a_flags & FSYNC_WAIT) 375 skipmeta = 1; 376 s = splbio(); 377 378 loop: 379 LIST_FOREACH(bp, &vp->v_dirtyblkhd, b_vnbufs) 380 bp->b_flags &= ~B_SCANNED; 381 for (bp = LIST_FIRST(&vp->v_dirtyblkhd); bp; bp = nbp) { 382 nbp = LIST_NEXT(bp, b_vnbufs); 383 simple_lock(&bp->b_interlock); 384 if (bp->b_flags & (B_BUSY | B_SCANNED)) { 385 simple_unlock(&bp->b_interlock); 386 continue; 387 } 388 if ((bp->b_flags & B_DELWRI) == 0) 389 panic("ffs_fsync: not dirty"); 390 if (skipmeta && bp->b_lblkno < 0) { 391 simple_unlock(&bp->b_interlock); 392 continue; 393 } 394 simple_unlock(&bp->b_interlock); 395 bp->b_flags |= B_BUSY | B_VFLUSH | B_SCANNED; 396 splx(s); 397 /* 398 * On our final pass through, do all I/O synchronously 399 * so that we can find out if our flush is failing 400 * because of write errors. 401 */ 402 if (passes > 0 || !(ap->a_flags & FSYNC_WAIT)) 403 (void) bawrite(bp); 404 else if ((error = bwrite(bp)) != 0) 405 return (error); 406 s = splbio(); 407 /* 408 * Since we may have slept during the I/O, we need 409 * to start from a known point. 410 */ 411 nbp = LIST_FIRST(&vp->v_dirtyblkhd); 412 } 413 if (skipmeta) { 414 skipmeta = 0; 415 goto loop; 416 } 417 if (ap->a_flags & FSYNC_WAIT) { 418 simple_lock(&global_v_numoutput_slock); 419 while (vp->v_numoutput) { 420 vp->v_flag |= VBWAIT; 421 (void) ltsleep(&vp->v_numoutput, PRIBIO + 1, 422 "ffsfsync", 0, &global_v_numoutput_slock); 423 } 424 simple_unlock(&global_v_numoutput_slock); 425 splx(s); 426 427 /* 428 * Ensure that any filesystem metadata associated 429 * with the vnode has been written. 430 */ 431 if ((error = softdep_sync_metadata(ap)) != 0) 432 return (error); 433 434 s = splbio(); 435 if (!LIST_EMPTY(&vp->v_dirtyblkhd)) { 436 /* 437 * Block devices associated with filesystems may 438 * have new I/O requests posted for them even if 439 * the vnode is locked, so no amount of trying will 440 * get them clean. Thus we give block devices a 441 * good effort, then just give up. For all other file 442 * types, go around and try again until it is clean. 443 */ 444 if (passes > 0) { 445 passes--; 446 goto loop; 447 } 448 #ifdef DIAGNOSTIC 449 if (vp->v_type != VBLK) 450 vprint("ffs_fsync: dirty", vp); 451 #endif 452 } 453 } 454 splx(s); 455 456 if (inodedeps_only) 457 waitfor = 0; 458 else 459 waitfor = (ap->a_flags & FSYNC_WAIT) ? UPDATE_WAIT : 0; 460 error = ffs_update(vp, NULL, NULL, waitfor); 461 462 if (error == 0 && ap->a_flags & FSYNC_CACHE) { 463 int i = 0; 464 VOP_IOCTL(VTOI(vp)->i_devvp, DIOCCACHESYNC, &i, FWRITE, 465 ap->a_l->l_cred, ap->a_l); 466 } 467 468 return error; 469 } 470 471 /* 472 * Reclaim an inode so that it can be used for other purposes. 473 */ 474 int 475 ffs_reclaim(void *v) 476 { 477 struct vop_reclaim_args /* { 478 struct vnode *a_vp; 479 struct lwp *a_l; 480 } */ *ap = v; 481 struct vnode *vp = ap->a_vp; 482 struct inode *ip = VTOI(vp); 483 struct ufsmount *ump = ip->i_ump; 484 int error; 485 486 if ((error = ufs_reclaim(vp, ap->a_l)) != 0) 487 return (error); 488 if (ip->i_din.ffs1_din != NULL) { 489 if (ump->um_fstype == UFS1) 490 pool_put(&ffs_dinode1_pool, ip->i_din.ffs1_din); 491 else 492 pool_put(&ffs_dinode2_pool, ip->i_din.ffs2_din); 493 } 494 /* 495 * XXX MFS ends up here, too, to free an inode. Should we create 496 * XXX a separate pool for MFS inodes? 497 */ 498 pool_put(&ffs_inode_pool, vp->v_data); 499 vp->v_data = NULL; 500 return (0); 501 } 502 503 int 504 ffs_getpages(void *v) 505 { 506 struct vop_getpages_args /* { 507 struct vnode *a_vp; 508 voff_t a_offset; 509 struct vm_page **a_m; 510 int *a_count; 511 int a_centeridx; 512 vm_prot_t a_access_type; 513 int a_advice; 514 int a_flags; 515 } */ *ap = v; 516 struct vnode *vp = ap->a_vp; 517 struct inode *ip = VTOI(vp); 518 struct fs *fs = ip->i_fs; 519 520 /* 521 * don't allow a softdep write to create pages for only part of a block. 522 * the dependency tracking requires that all pages be in memory for 523 * a block involved in a dependency. 524 */ 525 526 if (ap->a_flags & PGO_OVERWRITE && 527 (blkoff(fs, ap->a_offset) != 0 || 528 blkoff(fs, *ap->a_count << PAGE_SHIFT) != 0) && 529 DOINGSOFTDEP(ap->a_vp)) { 530 if ((ap->a_flags & PGO_LOCKED) == 0) { 531 simple_unlock(&vp->v_interlock); 532 } 533 return EINVAL; 534 } 535 return genfs_getpages(v); 536 } 537 538 /* 539 * Return the last logical file offset that should be written for this file 540 * if we're doing a write that ends at "size". 541 */ 542 543 void 544 ffs_gop_size(struct vnode *vp, off_t size, off_t *eobp, int flags) 545 { 546 struct inode *ip = VTOI(vp); 547 struct fs *fs = ip->i_fs; 548 daddr_t olbn, nlbn; 549 550 olbn = lblkno(fs, ip->i_size); 551 nlbn = lblkno(fs, size); 552 if (nlbn < NDADDR && olbn <= nlbn) { 553 *eobp = fragroundup(fs, size); 554 } else { 555 *eobp = blkroundup(fs, size); 556 } 557 } 558 559 int 560 ffs_openextattr(void *v) 561 { 562 struct vop_openextattr_args /* { 563 struct vnode *a_vp; 564 kauth_cred_t a_cred; 565 struct proc *a_p; 566 } */ *ap = v; 567 struct inode *ip = VTOI(ap->a_vp); 568 struct fs *fs = ip->i_fs; 569 570 /* Not supported for UFS1 file systems. */ 571 if (fs->fs_magic == FS_UFS1_MAGIC) 572 return (EOPNOTSUPP); 573 574 /* XXX Not implemented for UFS2 file systems. */ 575 return (EOPNOTSUPP); 576 } 577 578 int 579 ffs_closeextattr(void *v) 580 { 581 struct vop_closeextattr_args /* { 582 struct vnode *a_vp; 583 int a_commit; 584 kauth_cred_t a_cred; 585 struct proc *a_p; 586 } */ *ap = v; 587 struct inode *ip = VTOI(ap->a_vp); 588 struct fs *fs = ip->i_fs; 589 590 /* Not supported for UFS1 file systems. */ 591 if (fs->fs_magic == FS_UFS1_MAGIC) 592 return (EOPNOTSUPP); 593 594 /* XXX Not implemented for UFS2 file systems. */ 595 return (EOPNOTSUPP); 596 } 597 598 int 599 ffs_getextattr(void *v) 600 { 601 struct vop_getextattr_args /* { 602 struct vnode *a_vp; 603 int a_attrnamespace; 604 const char *a_name; 605 struct uio *a_uio; 606 size_t *a_size; 607 kauth_cred_t a_cred; 608 struct proc *a_p; 609 } */ *ap = v; 610 struct inode *ip = VTOI(ap->a_vp); 611 struct fs *fs = ip->i_fs; 612 613 if (fs->fs_magic == FS_UFS1_MAGIC) { 614 #ifdef UFS_EXTATTR 615 return (ufs_getextattr(ap)); 616 #else 617 return (EOPNOTSUPP); 618 #endif 619 } 620 621 /* XXX Not implemented for UFS2 file systems. */ 622 return (EOPNOTSUPP); 623 } 624 625 int 626 ffs_setextattr(void *v) 627 { 628 struct vop_setextattr_args /* { 629 struct vnode *a_vp; 630 int a_attrnamespace; 631 const char *a_name; 632 struct uio *a_uio; 633 kauth_cred_t a_cred; 634 struct proc *a_p; 635 } */ *ap = v; 636 struct inode *ip = VTOI(ap->a_vp); 637 struct fs *fs = ip->i_fs; 638 639 if (fs->fs_magic == FS_UFS1_MAGIC) { 640 #ifdef UFS_EXTATTR 641 return (ufs_setextattr(ap)); 642 #else 643 return (EOPNOTSUPP); 644 #endif 645 } 646 647 /* XXX Not implemented for UFS2 file systems. */ 648 return (EOPNOTSUPP); 649 } 650 651 int 652 ffs_listextattr(void *v) 653 { 654 struct vop_listextattr_args /* { 655 struct vnode *a_vp; 656 int a_attrnamespace; 657 struct uio *a_uio; 658 size_t *a_size; 659 kauth_cred_t a_cred; 660 struct proc *a_p; 661 } */ *ap = v; 662 struct inode *ip = VTOI(ap->a_vp); 663 struct fs *fs = ip->i_fs; 664 665 /* Not supported for UFS1 file systems. */ 666 if (fs->fs_magic == FS_UFS1_MAGIC) 667 return (EOPNOTSUPP); 668 669 /* XXX Not implemented for UFS2 file systems. */ 670 return (EOPNOTSUPP); 671 } 672 673 int 674 ffs_deleteextattr(void *v) 675 { 676 struct vop_deleteextattr_args /* { 677 struct vnode *a_vp; 678 int a_attrnamespace; 679 kauth_cred_t a_cred; 680 struct proc *a_p; 681 } */ *ap = v; 682 struct inode *ip = VTOI(ap->a_vp); 683 struct fs *fs = ip->i_fs; 684 685 if (fs->fs_magic == FS_UFS1_MAGIC) { 686 #ifdef UFS_EXTATTR 687 return (ufs_deleteextattr(ap)); 688 #else 689 return (EOPNOTSUPP); 690 #endif 691 } 692 693 /* XXX Not implemented for UFS2 file systems. */ 694 return (EOPNOTSUPP); 695 }
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