lfs_vnops.c revision 1.50.2.12
1 /* $NetBSD: lfs_vnops.c,v 1.50.2.12 2002/12/11 06:51:46 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1999, 2000 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Konrad E. Schroder <perseant (at) hhhh.org>. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 /* 39 * Copyright (c) 1986, 1989, 1991, 1993, 1995 40 * The Regents of the University of California. All rights reserved. 41 * 42 * Redistribution and use in source and binary forms, with or without 43 * modification, are permitted provided that the following conditions 44 * are met: 45 * 1. Redistributions of source code must retain the above copyright 46 * notice, this list of conditions and the following disclaimer. 47 * 2. Redistributions in binary form must reproduce the above copyright 48 * notice, this list of conditions and the following disclaimer in the 49 * documentation and/or other materials provided with the distribution. 50 * 3. All advertising materials mentioning features or use of this software 51 * must display the following acknowledgement: 52 * This product includes software developed by the University of 53 * California, Berkeley and its contributors. 54 * 4. Neither the name of the University nor the names of its contributors 55 * may be used to endorse or promote products derived from this software 56 * without specific prior written permission. 57 * 58 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 59 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 60 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 61 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 62 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 63 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 64 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 65 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 66 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 67 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 68 * SUCH DAMAGE. 69 * 70 * @(#)lfs_vnops.c 8.13 (Berkeley) 6/10/95 71 */ 72 73 #include <sys/cdefs.h> 74 __KERNEL_RCSID(0, "$NetBSD: lfs_vnops.c,v 1.50.2.12 2002/12/11 06:51:46 thorpej Exp $"); 75 76 #include <sys/param.h> 77 #include <sys/systm.h> 78 #include <sys/namei.h> 79 #include <sys/resourcevar.h> 80 #include <sys/kernel.h> 81 #include <sys/file.h> 82 #include <sys/stat.h> 83 #include <sys/buf.h> 84 #include <sys/proc.h> 85 #include <sys/mount.h> 86 #include <sys/vnode.h> 87 #include <sys/malloc.h> 88 #include <sys/pool.h> 89 #include <sys/signalvar.h> 90 91 #include <miscfs/fifofs/fifo.h> 92 #include <miscfs/genfs/genfs.h> 93 #include <miscfs/specfs/specdev.h> 94 95 #include <ufs/ufs/inode.h> 96 #include <ufs/ufs/dir.h> 97 #include <ufs/ufs/ufsmount.h> 98 #include <ufs/ufs/ufs_extern.h> 99 100 #include <ufs/lfs/lfs.h> 101 #include <ufs/lfs/lfs_extern.h> 102 103 /* Global vfs data structures for lfs. */ 104 int (**lfs_vnodeop_p)(void *); 105 const struct vnodeopv_entry_desc lfs_vnodeop_entries[] = { 106 { &vop_default_desc, vn_default_error }, 107 { &vop_lookup_desc, ufs_lookup }, /* lookup */ 108 { &vop_create_desc, lfs_create }, /* create */ 109 { &vop_whiteout_desc, lfs_whiteout }, /* whiteout */ 110 { &vop_mknod_desc, lfs_mknod }, /* mknod */ 111 { &vop_open_desc, ufs_open }, /* open */ 112 { &vop_close_desc, lfs_close }, /* close */ 113 { &vop_access_desc, ufs_access }, /* access */ 114 { &vop_getattr_desc, lfs_getattr }, /* getattr */ 115 { &vop_setattr_desc, lfs_setattr }, /* setattr */ 116 { &vop_read_desc, lfs_read }, /* read */ 117 { &vop_write_desc, lfs_write }, /* write */ 118 { &vop_lease_desc, ufs_lease_check }, /* lease */ 119 { &vop_ioctl_desc, ufs_ioctl }, /* ioctl */ 120 { &vop_fcntl_desc, ufs_fcntl }, /* fcntl */ 121 { &vop_poll_desc, ufs_poll }, /* poll */ 122 { &vop_kqfilter_desc, genfs_kqfilter }, /* kqfilter */ 123 { &vop_revoke_desc, ufs_revoke }, /* revoke */ 124 { &vop_mmap_desc, ufs_mmap }, /* mmap */ 125 { &vop_fsync_desc, lfs_fsync }, /* fsync */ 126 { &vop_seek_desc, ufs_seek }, /* seek */ 127 { &vop_remove_desc, lfs_remove }, /* remove */ 128 { &vop_link_desc, lfs_link }, /* link */ 129 { &vop_rename_desc, lfs_rename }, /* rename */ 130 { &vop_mkdir_desc, lfs_mkdir }, /* mkdir */ 131 { &vop_rmdir_desc, lfs_rmdir }, /* rmdir */ 132 { &vop_symlink_desc, lfs_symlink }, /* symlink */ 133 { &vop_readdir_desc, ufs_readdir }, /* readdir */ 134 { &vop_readlink_desc, ufs_readlink }, /* readlink */ 135 { &vop_abortop_desc, ufs_abortop }, /* abortop */ 136 { &vop_inactive_desc, lfs_inactive }, /* inactive */ 137 { &vop_reclaim_desc, lfs_reclaim }, /* reclaim */ 138 { &vop_lock_desc, ufs_lock }, /* lock */ 139 { &vop_unlock_desc, ufs_unlock }, /* unlock */ 140 { &vop_bmap_desc, ufs_bmap }, /* bmap */ 141 { &vop_strategy_desc, ufs_strategy }, /* strategy */ 142 { &vop_print_desc, ufs_print }, /* print */ 143 { &vop_islocked_desc, ufs_islocked }, /* islocked */ 144 { &vop_pathconf_desc, ufs_pathconf }, /* pathconf */ 145 { &vop_advlock_desc, ufs_advlock }, /* advlock */ 146 { &vop_blkatoff_desc, lfs_blkatoff }, /* blkatoff */ 147 { &vop_valloc_desc, lfs_valloc }, /* valloc */ 148 { &vop_balloc_desc, lfs_balloc }, /* balloc */ 149 { &vop_vfree_desc, lfs_vfree }, /* vfree */ 150 { &vop_truncate_desc, lfs_truncate }, /* truncate */ 151 { &vop_update_desc, lfs_update }, /* update */ 152 { &vop_bwrite_desc, lfs_bwrite }, /* bwrite */ 153 { &vop_getpages_desc, lfs_getpages }, /* getpages */ 154 { &vop_putpages_desc, lfs_putpages }, /* putpages */ 155 { NULL, NULL } 156 }; 157 const struct vnodeopv_desc lfs_vnodeop_opv_desc = 158 { &lfs_vnodeop_p, lfs_vnodeop_entries }; 159 160 int (**lfs_specop_p)(void *); 161 const struct vnodeopv_entry_desc lfs_specop_entries[] = { 162 { &vop_default_desc, vn_default_error }, 163 { &vop_lookup_desc, spec_lookup }, /* lookup */ 164 { &vop_create_desc, spec_create }, /* create */ 165 { &vop_mknod_desc, spec_mknod }, /* mknod */ 166 { &vop_open_desc, spec_open }, /* open */ 167 { &vop_close_desc, lfsspec_close }, /* close */ 168 { &vop_access_desc, ufs_access }, /* access */ 169 { &vop_getattr_desc, lfs_getattr }, /* getattr */ 170 { &vop_setattr_desc, lfs_setattr }, /* setattr */ 171 { &vop_read_desc, ufsspec_read }, /* read */ 172 { &vop_write_desc, ufsspec_write }, /* write */ 173 { &vop_lease_desc, spec_lease_check }, /* lease */ 174 { &vop_ioctl_desc, spec_ioctl }, /* ioctl */ 175 { &vop_fcntl_desc, ufs_fcntl }, /* fcntl */ 176 { &vop_poll_desc, spec_poll }, /* poll */ 177 { &vop_kqfilter_desc, spec_kqfilter }, /* kqfilter */ 178 { &vop_revoke_desc, spec_revoke }, /* revoke */ 179 { &vop_mmap_desc, spec_mmap }, /* mmap */ 180 { &vop_fsync_desc, spec_fsync }, /* fsync */ 181 { &vop_seek_desc, spec_seek }, /* seek */ 182 { &vop_remove_desc, spec_remove }, /* remove */ 183 { &vop_link_desc, spec_link }, /* link */ 184 { &vop_rename_desc, spec_rename }, /* rename */ 185 { &vop_mkdir_desc, spec_mkdir }, /* mkdir */ 186 { &vop_rmdir_desc, spec_rmdir }, /* rmdir */ 187 { &vop_symlink_desc, spec_symlink }, /* symlink */ 188 { &vop_readdir_desc, spec_readdir }, /* readdir */ 189 { &vop_readlink_desc, spec_readlink }, /* readlink */ 190 { &vop_abortop_desc, spec_abortop }, /* abortop */ 191 { &vop_inactive_desc, lfs_inactive }, /* inactive */ 192 { &vop_reclaim_desc, lfs_reclaim }, /* reclaim */ 193 { &vop_lock_desc, ufs_lock }, /* lock */ 194 { &vop_unlock_desc, ufs_unlock }, /* unlock */ 195 { &vop_bmap_desc, spec_bmap }, /* bmap */ 196 { &vop_strategy_desc, spec_strategy }, /* strategy */ 197 { &vop_print_desc, ufs_print }, /* print */ 198 { &vop_islocked_desc, ufs_islocked }, /* islocked */ 199 { &vop_pathconf_desc, spec_pathconf }, /* pathconf */ 200 { &vop_advlock_desc, spec_advlock }, /* advlock */ 201 { &vop_blkatoff_desc, spec_blkatoff }, /* blkatoff */ 202 { &vop_valloc_desc, spec_valloc }, /* valloc */ 203 { &vop_vfree_desc, lfs_vfree }, /* vfree */ 204 { &vop_truncate_desc, spec_truncate }, /* truncate */ 205 { &vop_update_desc, lfs_update }, /* update */ 206 { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ 207 { &vop_getpages_desc, spec_getpages }, /* getpages */ 208 { &vop_putpages_desc, spec_putpages }, /* putpages */ 209 { NULL, NULL } 210 }; 211 const struct vnodeopv_desc lfs_specop_opv_desc = 212 { &lfs_specop_p, lfs_specop_entries }; 213 214 int (**lfs_fifoop_p)(void *); 215 const struct vnodeopv_entry_desc lfs_fifoop_entries[] = { 216 { &vop_default_desc, vn_default_error }, 217 { &vop_lookup_desc, fifo_lookup }, /* lookup */ 218 { &vop_create_desc, fifo_create }, /* create */ 219 { &vop_mknod_desc, fifo_mknod }, /* mknod */ 220 { &vop_open_desc, fifo_open }, /* open */ 221 { &vop_close_desc, lfsfifo_close }, /* close */ 222 { &vop_access_desc, ufs_access }, /* access */ 223 { &vop_getattr_desc, lfs_getattr }, /* getattr */ 224 { &vop_setattr_desc, lfs_setattr }, /* setattr */ 225 { &vop_read_desc, ufsfifo_read }, /* read */ 226 { &vop_write_desc, ufsfifo_write }, /* write */ 227 { &vop_lease_desc, fifo_lease_check }, /* lease */ 228 { &vop_ioctl_desc, fifo_ioctl }, /* ioctl */ 229 { &vop_fcntl_desc, ufs_fcntl }, /* fcntl */ 230 { &vop_poll_desc, fifo_poll }, /* poll */ 231 { &vop_kqfilter_desc, fifo_kqfilter }, /* kqfilter */ 232 { &vop_revoke_desc, fifo_revoke }, /* revoke */ 233 { &vop_mmap_desc, fifo_mmap }, /* mmap */ 234 { &vop_fsync_desc, fifo_fsync }, /* fsync */ 235 { &vop_seek_desc, fifo_seek }, /* seek */ 236 { &vop_remove_desc, fifo_remove }, /* remove */ 237 { &vop_link_desc, fifo_link }, /* link */ 238 { &vop_rename_desc, fifo_rename }, /* rename */ 239 { &vop_mkdir_desc, fifo_mkdir }, /* mkdir */ 240 { &vop_rmdir_desc, fifo_rmdir }, /* rmdir */ 241 { &vop_symlink_desc, fifo_symlink }, /* symlink */ 242 { &vop_readdir_desc, fifo_readdir }, /* readdir */ 243 { &vop_readlink_desc, fifo_readlink }, /* readlink */ 244 { &vop_abortop_desc, fifo_abortop }, /* abortop */ 245 { &vop_inactive_desc, lfs_inactive }, /* inactive */ 246 { &vop_reclaim_desc, lfs_reclaim }, /* reclaim */ 247 { &vop_lock_desc, ufs_lock }, /* lock */ 248 { &vop_unlock_desc, ufs_unlock }, /* unlock */ 249 { &vop_bmap_desc, fifo_bmap }, /* bmap */ 250 { &vop_strategy_desc, fifo_strategy }, /* strategy */ 251 { &vop_print_desc, ufs_print }, /* print */ 252 { &vop_islocked_desc, ufs_islocked }, /* islocked */ 253 { &vop_pathconf_desc, fifo_pathconf }, /* pathconf */ 254 { &vop_advlock_desc, fifo_advlock }, /* advlock */ 255 { &vop_blkatoff_desc, fifo_blkatoff }, /* blkatoff */ 256 { &vop_valloc_desc, fifo_valloc }, /* valloc */ 257 { &vop_vfree_desc, lfs_vfree }, /* vfree */ 258 { &vop_truncate_desc, fifo_truncate }, /* truncate */ 259 { &vop_update_desc, lfs_update }, /* update */ 260 { &vop_bwrite_desc, lfs_bwrite }, /* bwrite */ 261 { &vop_putpages_desc, fifo_putpages }, /* putpages */ 262 { NULL, NULL } 263 }; 264 const struct vnodeopv_desc lfs_fifoop_opv_desc = 265 { &lfs_fifoop_p, lfs_fifoop_entries }; 266 267 /* 268 * A function version of LFS_ITIMES, for the UFS functions which call ITIMES 269 */ 270 void 271 lfs_itimes(struct inode *ip, struct timespec *acc, struct timespec *mod, struct timespec *cre) 272 { 273 LFS_ITIMES(ip, acc, mod, cre); 274 } 275 276 #define LFS_READWRITE 277 #include <ufs/ufs/ufs_readwrite.c> 278 #undef LFS_READWRITE 279 280 /* 281 * Synch an open file. 282 */ 283 /* ARGSUSED */ 284 int 285 lfs_fsync(void *v) 286 { 287 struct vop_fsync_args /* { 288 struct vnode *a_vp; 289 struct ucred *a_cred; 290 int a_flags; 291 off_t offlo; 292 off_t offhi; 293 struct proc *a_p; 294 } */ *ap = v; 295 struct vnode *vp = ap->a_vp; 296 int error; 297 298 /* Ignore the trickle syncer */ 299 if (ap->a_flags & FSYNC_LAZY) 300 return 0; 301 302 simple_lock(&vp->v_interlock); 303 error = VOP_PUTPAGES(vp, trunc_page(ap->a_offlo), 304 round_page(ap->a_offhi), PGO_CLEANIT | PGO_SYNCIO); 305 if (error) 306 return error; 307 error = VOP_UPDATE(vp, NULL, NULL, 308 (ap->a_flags & FSYNC_WAIT) != 0 ? UPDATE_WAIT : 0); 309 #ifdef DEBUG 310 /* 311 * If we were called from vinvalbuf and lfs_update 312 * didn't flush all our buffers, we're in trouble. 313 */ 314 if ((ap->a_flags & FSYNC_WAIT) && LIST_FIRST(&vp->v_dirtyblkhd) != NULL) { 315 struct buf *bp; 316 317 bp = LIST_FIRST(&vp->v_dirtyblkhd); 318 printf("lfs_fsync: ino %d failed to sync", VTOI(vp)->i_number); 319 printf("lfs_fsync: iocount = %d\n", VTOI(vp)->i_lfs->lfs_iocount); 320 printf("lfs_fsync: flags are 0x%x, numoutput=%d\n", 321 VTOI(vp)->i_flag, vp->v_numoutput); 322 printf("lfs_fsync: writecount=%ld\n", vp->v_writecount); 323 printf("lfs_fsync: first bp: %p, flags=0x%lx, lbn=%d\n", 324 bp, bp->b_flags, bp->b_lblkno); 325 } 326 #endif 327 return error; 328 } 329 330 /* 331 * Take IN_ADIROP off, then call ufs_inactive. 332 */ 333 int 334 lfs_inactive(void *v) 335 { 336 struct vop_inactive_args /* { 337 struct vnode *a_vp; 338 struct proc *a_p; 339 } */ *ap = v; 340 struct inode *ip = VTOI(ap->a_vp); 341 342 if (ip->i_flag & IN_ADIROP) 343 --ip->i_lfs->lfs_nadirop; 344 ip->i_flag &= ~IN_ADIROP; 345 return ufs_inactive(v); 346 } 347 348 /* 349 * These macros are used to bracket UFS directory ops, so that we can 350 * identify all the pages touched during directory ops which need to 351 * be ordered and flushed atomically, so that they may be recovered. 352 */ 353 /* 354 * XXX KS - Because we have to mark nodes VDIROP in order to prevent 355 * the cache from reclaiming them while a dirop is in progress, we must 356 * also manage the number of nodes so marked (otherwise we can run out). 357 * We do this by setting lfs_dirvcount to the number of marked vnodes; it 358 * is decremented during segment write, when VDIROP is taken off. 359 */ 360 #define SET_DIROP(vp) lfs_set_dirop(vp) 361 static int lfs_set_dirop(struct vnode *); 362 extern int lfs_dirvcount; 363 364 static int 365 lfs_set_dirop(struct vnode *vp) 366 { 367 struct lfs *fs; 368 int error; 369 370 fs = VTOI(vp)->i_lfs; 371 /* 372 * We might need one directory block plus supporting indirect blocks, 373 * plus an inode block and ifile page for the new vnode. 374 */ 375 if ((error = lfs_reserve(fs, vp, btofsb(fs, (NIADDR + 3) << fs->lfs_bshift))) != 0) 376 return (error); 377 if (fs->lfs_dirops == 0) 378 lfs_check(vp, LFS_UNUSED_LBN, 0); 379 while (fs->lfs_writer || lfs_dirvcount > LFS_MAXDIROP) { 380 if (fs->lfs_writer) 381 tsleep(&fs->lfs_dirops, PRIBIO + 1, "lfs_sdirop", 0); 382 if (lfs_dirvcount > LFS_MAXDIROP && fs->lfs_dirops == 0) { 383 ++fs->lfs_writer; 384 lfs_flush(fs, 0); 385 if (--fs->lfs_writer == 0) 386 wakeup(&fs->lfs_dirops); 387 } 388 389 if (lfs_dirvcount > LFS_MAXDIROP) { 390 #ifdef DEBUG_LFS 391 printf("lfs_set_dirop: sleeping with dirops=%d, " 392 "dirvcount=%d\n", fs->lfs_dirops, 393 lfs_dirvcount); 394 #endif 395 if ((error = tsleep(&lfs_dirvcount, PCATCH|PUSER, 396 "lfs_maxdirop", 0)) != 0) { 397 lfs_reserve(fs, vp, -btofsb(fs, (NIADDR + 3) << fs->lfs_bshift)); 398 return error; 399 } 400 } 401 } 402 ++fs->lfs_dirops; 403 fs->lfs_doifile = 1; 404 405 /* Hold a reference so SET_ENDOP will be happy */ 406 lfs_vref(vp); 407 408 return 0; 409 } 410 411 #define SET_ENDOP(fs,vp,str) { \ 412 --(fs)->lfs_dirops; \ 413 if (!(fs)->lfs_dirops) { \ 414 if ((fs)->lfs_nadirop) { \ 415 panic("SET_ENDOP: %s: no dirops but nadirop=%d", \ 416 (str), (fs)->lfs_nadirop); \ 417 } \ 418 wakeup(&(fs)->lfs_writer); \ 419 lfs_check((vp),LFS_UNUSED_LBN,0); \ 420 } \ 421 lfs_reserve((fs), vp, -btofsb((fs), (NIADDR + 3) << (fs)->lfs_bshift)); /* XXX */ \ 422 lfs_vunref(vp); \ 423 } 424 425 #define MARK_VNODE(dvp) do { \ 426 if (!((dvp)->v_flag & VDIROP)) { \ 427 (void)lfs_vref(dvp); \ 428 ++lfs_dirvcount; \ 429 } \ 430 (dvp)->v_flag |= VDIROP; \ 431 if (!(VTOI(dvp)->i_flag & IN_ADIROP)) { \ 432 ++VTOI(dvp)->i_lfs->lfs_nadirop; \ 433 } \ 434 VTOI(dvp)->i_flag |= IN_ADIROP; \ 435 } while (0) 436 437 #define UNMARK_VNODE(vp) lfs_unmark_vnode(vp) 438 439 void lfs_unmark_vnode(struct vnode *vp) 440 { 441 struct inode *ip; 442 443 ip = VTOI(vp); 444 445 if (ip->i_flag & IN_ADIROP) 446 --ip->i_lfs->lfs_nadirop; 447 ip->i_flag &= ~IN_ADIROP; 448 } 449 450 int 451 lfs_symlink(void *v) 452 { 453 struct vop_symlink_args /* { 454 struct vnode *a_dvp; 455 struct vnode **a_vpp; 456 struct componentname *a_cnp; 457 struct vattr *a_vap; 458 char *a_target; 459 } */ *ap = v; 460 int error; 461 462 if ((error = SET_DIROP(ap->a_dvp)) != 0) { 463 vput(ap->a_dvp); 464 return error; 465 } 466 MARK_VNODE(ap->a_dvp); 467 error = ufs_symlink(ap); 468 UNMARK_VNODE(ap->a_dvp); 469 if (*(ap->a_vpp)) 470 UNMARK_VNODE(*(ap->a_vpp)); 471 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"symlink"); 472 return (error); 473 } 474 475 int 476 lfs_mknod(void *v) 477 { 478 struct vop_mknod_args /* { 479 struct vnode *a_dvp; 480 struct vnode **a_vpp; 481 struct componentname *a_cnp; 482 struct vattr *a_vap; 483 } */ *ap = v; 484 struct vattr *vap = ap->a_vap; 485 struct vnode **vpp = ap->a_vpp; 486 struct inode *ip; 487 int error; 488 struct mount *mp; 489 ino_t ino; 490 491 if ((error = SET_DIROP(ap->a_dvp)) != 0) { 492 vput(ap->a_dvp); 493 return error; 494 } 495 MARK_VNODE(ap->a_dvp); 496 error = ufs_makeinode(MAKEIMODE(vap->va_type, vap->va_mode), 497 ap->a_dvp, vpp, ap->a_cnp); 498 UNMARK_VNODE(ap->a_dvp); 499 if (*(ap->a_vpp)) 500 UNMARK_VNODE(*(ap->a_vpp)); 501 502 /* Either way we're done with the dirop at this point */ 503 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"mknod"); 504 505 if (error) 506 return (error); 507 508 ip = VTOI(*vpp); 509 mp = (*vpp)->v_mount; 510 ino = ip->i_number; 511 ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE; 512 if (vap->va_rdev != VNOVAL) { 513 /* 514 * Want to be able to use this to make badblock 515 * inodes, so don't truncate the dev number. 516 */ 517 #if 0 518 ip->i_ffs_rdev = ufs_rw32(vap->va_rdev, 519 UFS_MPNEEDSWAP((*vpp)->v_mount)); 520 #else 521 ip->i_ffs_rdev = vap->va_rdev; 522 #endif 523 } 524 /* 525 * Call fsync to write the vnode so that we don't have to deal with 526 * flushing it when it's marked VDIROP|VXLOCK. 527 * 528 * XXX KS - If we can't flush we also can't call vgone(), so must 529 * return. But, that leaves this vnode in limbo, also not good. 530 * Can this ever happen (barring hardware failure)? 531 */ 532 if ((error = VOP_FSYNC(*vpp, NOCRED, FSYNC_WAIT, 0, 0, 533 curproc)) != 0) { 534 printf("Couldn't fsync in mknod (ino %d)---what do I do?\n", 535 VTOI(*vpp)->i_number); 536 return (error); 537 } 538 /* 539 * Remove vnode so that it will be reloaded by VFS_VGET and 540 * checked to see if it is an alias of an existing entry in 541 * the inode cache. 542 */ 543 /* Used to be vput, but that causes us to call VOP_INACTIVE twice. */ 544 VOP_UNLOCK(*vpp, 0); 545 lfs_vunref(*vpp); 546 (*vpp)->v_type = VNON; 547 vgone(*vpp); 548 error = VFS_VGET(mp, ino, vpp); 549 if (error != 0) { 550 *vpp = NULL; 551 return (error); 552 } 553 return (0); 554 } 555 556 int 557 lfs_create(void *v) 558 { 559 struct vop_create_args /* { 560 struct vnode *a_dvp; 561 struct vnode **a_vpp; 562 struct componentname *a_cnp; 563 struct vattr *a_vap; 564 } */ *ap = v; 565 int error; 566 567 if ((error = SET_DIROP(ap->a_dvp)) != 0) { 568 vput(ap->a_dvp); 569 return error; 570 } 571 MARK_VNODE(ap->a_dvp); 572 error = ufs_create(ap); 573 UNMARK_VNODE(ap->a_dvp); 574 if (*(ap->a_vpp)) 575 UNMARK_VNODE(*(ap->a_vpp)); 576 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"create"); 577 return (error); 578 } 579 580 int 581 lfs_whiteout(void *v) 582 { 583 struct vop_whiteout_args /* { 584 struct vnode *a_dvp; 585 struct componentname *a_cnp; 586 int a_flags; 587 } */ *ap = v; 588 int error; 589 590 if ((error = SET_DIROP(ap->a_dvp)) != 0) 591 /* XXX no unlock here? */ 592 return error; 593 MARK_VNODE(ap->a_dvp); 594 error = ufs_whiteout(ap); 595 UNMARK_VNODE(ap->a_dvp); 596 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"whiteout"); 597 return (error); 598 } 599 600 int 601 lfs_mkdir(void *v) 602 { 603 struct vop_mkdir_args /* { 604 struct vnode *a_dvp; 605 struct vnode **a_vpp; 606 struct componentname *a_cnp; 607 struct vattr *a_vap; 608 } */ *ap = v; 609 int error; 610 611 if ((error = SET_DIROP(ap->a_dvp)) != 0) { 612 vput(ap->a_dvp); 613 return error; 614 } 615 MARK_VNODE(ap->a_dvp); 616 error = ufs_mkdir(ap); 617 UNMARK_VNODE(ap->a_dvp); 618 if (*(ap->a_vpp)) 619 UNMARK_VNODE(*(ap->a_vpp)); 620 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"mkdir"); 621 return (error); 622 } 623 624 int 625 lfs_remove(void *v) 626 { 627 struct vop_remove_args /* { 628 struct vnode *a_dvp; 629 struct vnode *a_vp; 630 struct componentname *a_cnp; 631 } */ *ap = v; 632 struct vnode *dvp, *vp; 633 int error; 634 635 dvp = ap->a_dvp; 636 vp = ap->a_vp; 637 if ((error = SET_DIROP(dvp)) != 0) { 638 if (dvp == vp) 639 vrele(vp); 640 else 641 vput(vp); 642 vput(dvp); 643 return error; 644 } 645 MARK_VNODE(dvp); 646 MARK_VNODE(vp); 647 error = ufs_remove(ap); 648 UNMARK_VNODE(dvp); 649 UNMARK_VNODE(vp); 650 651 /* 652 * If ufs_remove failed, vp doesn't need to be VDIROP any more. 653 * If it succeeded, we can go ahead and wipe out vp, since 654 * its loss won't appear on disk until checkpoint, and by then 655 * dvp will have been written, completing the dirop. 656 */ 657 --lfs_dirvcount; 658 vp->v_flag &= ~VDIROP; 659 wakeup(&lfs_dirvcount); 660 vrele(vp); 661 662 SET_ENDOP(VTOI(dvp)->i_lfs,dvp,"remove"); 663 return (error); 664 } 665 666 int 667 lfs_rmdir(void *v) 668 { 669 struct vop_rmdir_args /* { 670 struct vnodeop_desc *a_desc; 671 struct vnode *a_dvp; 672 struct vnode *a_vp; 673 struct componentname *a_cnp; 674 } */ *ap = v; 675 int error; 676 677 if ((error = SET_DIROP(ap->a_dvp)) != 0) { 678 vrele(ap->a_dvp); 679 if (ap->a_vp != ap->a_dvp) 680 VOP_UNLOCK(ap->a_dvp, 0); 681 vput(ap->a_vp); 682 return error; 683 } 684 MARK_VNODE(ap->a_dvp); 685 MARK_VNODE(ap->a_vp); 686 error = ufs_rmdir(ap); 687 UNMARK_VNODE(ap->a_dvp); 688 UNMARK_VNODE(ap->a_vp); 689 690 /* 691 * If ufs_rmdir failed, vp doesn't need to be VDIROP any more. 692 * If it succeeded, we can go ahead and wipe out vp, since 693 * its loss won't appear on disk until checkpoint, and by then 694 * dvp will have been written, completing the dirop. 695 */ 696 --lfs_dirvcount; 697 ap->a_vp->v_flag &= ~VDIROP; 698 wakeup(&lfs_dirvcount); 699 vrele(ap->a_vp); 700 701 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"rmdir"); 702 return (error); 703 } 704 705 int 706 lfs_link(void *v) 707 { 708 struct vop_link_args /* { 709 struct vnode *a_dvp; 710 struct vnode *a_vp; 711 struct componentname *a_cnp; 712 } */ *ap = v; 713 int error; 714 715 if ((error = SET_DIROP(ap->a_dvp)) != 0) { 716 vput(ap->a_dvp); 717 return error; 718 } 719 MARK_VNODE(ap->a_dvp); 720 error = ufs_link(ap); 721 UNMARK_VNODE(ap->a_dvp); 722 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"link"); 723 return (error); 724 } 725 726 int 727 lfs_rename(void *v) 728 { 729 struct vop_rename_args /* { 730 struct vnode *a_fdvp; 731 struct vnode *a_fvp; 732 struct componentname *a_fcnp; 733 struct vnode *a_tdvp; 734 struct vnode *a_tvp; 735 struct componentname *a_tcnp; 736 } */ *ap = v; 737 struct vnode *tvp, *fvp, *tdvp, *fdvp; 738 int error; 739 struct lfs *fs; 740 741 fs = VTOI(ap->a_fdvp)->i_lfs; 742 tvp = ap->a_tvp; 743 tdvp = ap->a_tdvp; 744 fvp = ap->a_fvp; 745 fdvp = ap->a_fdvp; 746 747 /* 748 * Check for cross-device rename. 749 * If it is, we don't want to set dirops, just error out. 750 * (In particular note that MARK_VNODE(tdvp) will DTWT on 751 * a cross-device rename.) 752 * 753 * Copied from ufs_rename. 754 */ 755 if ((fvp->v_mount != tdvp->v_mount) || 756 (tvp && (fvp->v_mount != tvp->v_mount))) { 757 error = EXDEV; 758 goto errout; 759 } 760 if ((error = SET_DIROP(fdvp)) != 0) 761 goto errout; 762 MARK_VNODE(fdvp); 763 MARK_VNODE(tdvp); 764 error = ufs_rename(ap); 765 UNMARK_VNODE(fdvp); 766 UNMARK_VNODE(tdvp); 767 SET_ENDOP(fs,fdvp,"rename"); 768 return (error); 769 770 errout: 771 VOP_ABORTOP(tdvp, ap->a_tcnp); /* XXX, why not in NFS? */ 772 if (tdvp == tvp) 773 vrele(tdvp); 774 else 775 vput(tdvp); 776 if (tvp) 777 vput(tvp); 778 VOP_ABORTOP(fdvp, ap->a_fcnp); /* XXX, why not in NFS? */ 779 vrele(fdvp); 780 vrele(fvp); 781 return (error); 782 } 783 784 /* XXX hack to avoid calling ITIMES in getattr */ 785 int 786 lfs_getattr(void *v) 787 { 788 struct vop_getattr_args /* { 789 struct vnode *a_vp; 790 struct vattr *a_vap; 791 struct ucred *a_cred; 792 struct proc *a_p; 793 } */ *ap = v; 794 struct vnode *vp = ap->a_vp; 795 struct inode *ip = VTOI(vp); 796 struct vattr *vap = ap->a_vap; 797 struct lfs *fs = ip->i_lfs; 798 /* 799 * Copy from inode table 800 */ 801 vap->va_fsid = ip->i_dev; 802 vap->va_fileid = ip->i_number; 803 vap->va_mode = ip->i_ffs_mode & ~IFMT; 804 vap->va_nlink = ip->i_ffs_nlink; 805 vap->va_uid = ip->i_ffs_uid; 806 vap->va_gid = ip->i_ffs_gid; 807 vap->va_rdev = (dev_t)ip->i_ffs_rdev; 808 vap->va_size = vp->v_size; 809 vap->va_atime.tv_sec = ip->i_ffs_atime; 810 vap->va_atime.tv_nsec = ip->i_ffs_atimensec; 811 vap->va_mtime.tv_sec = ip->i_ffs_mtime; 812 vap->va_mtime.tv_nsec = ip->i_ffs_mtimensec; 813 vap->va_ctime.tv_sec = ip->i_ffs_ctime; 814 vap->va_ctime.tv_nsec = ip->i_ffs_ctimensec; 815 vap->va_flags = ip->i_ffs_flags; 816 vap->va_gen = ip->i_ffs_gen; 817 /* this doesn't belong here */ 818 if (vp->v_type == VBLK) 819 vap->va_blocksize = BLKDEV_IOSIZE; 820 else if (vp->v_type == VCHR) 821 vap->va_blocksize = MAXBSIZE; 822 else 823 vap->va_blocksize = vp->v_mount->mnt_stat.f_iosize; 824 vap->va_bytes = fsbtob(fs, (u_quad_t)ip->i_ffs_blocks); 825 vap->va_type = vp->v_type; 826 vap->va_filerev = ip->i_modrev; 827 return (0); 828 } 829 830 /* 831 * Check to make sure the inode blocks won't choke the buffer 832 * cache, then call ufs_setattr as usual. 833 */ 834 int 835 lfs_setattr(void *v) 836 { 837 struct vop_getattr_args /* { 838 struct vnode *a_vp; 839 struct vattr *a_vap; 840 struct ucred *a_cred; 841 struct proc *a_p; 842 } */ *ap = v; 843 struct vnode *vp = ap->a_vp; 844 845 lfs_check(vp, LFS_UNUSED_LBN, 0); 846 return ufs_setattr(v); 847 } 848 849 /* 850 * Close called 851 * 852 * XXX -- we were using ufs_close, but since it updates the 853 * times on the inode, we might need to bump the uinodes 854 * count. 855 */ 856 /* ARGSUSED */ 857 int 858 lfs_close(void *v) 859 { 860 struct vop_close_args /* { 861 struct vnode *a_vp; 862 int a_fflag; 863 struct ucred *a_cred; 864 struct proc *a_p; 865 } */ *ap = v; 866 struct vnode *vp = ap->a_vp; 867 struct inode *ip = VTOI(vp); 868 struct timespec ts; 869 870 if (vp->v_usecount > 1) { 871 TIMEVAL_TO_TIMESPEC(&time, &ts); 872 LFS_ITIMES(ip, &ts, &ts, &ts); 873 } 874 return (0); 875 } 876 877 /* 878 * Close wrapper for special devices. 879 * 880 * Update the times on the inode then do device close. 881 */ 882 int 883 lfsspec_close(void *v) 884 { 885 struct vop_close_args /* { 886 struct vnode *a_vp; 887 int a_fflag; 888 struct ucred *a_cred; 889 struct proc *a_p; 890 } */ *ap = v; 891 struct vnode *vp; 892 struct inode *ip; 893 struct timespec ts; 894 895 vp = ap->a_vp; 896 ip = VTOI(vp); 897 if (vp->v_usecount > 1) { 898 TIMEVAL_TO_TIMESPEC(&time, &ts); 899 LFS_ITIMES(ip, &ts, &ts, &ts); 900 } 901 return (VOCALL (spec_vnodeop_p, VOFFSET(vop_close), ap)); 902 } 903 904 /* 905 * Close wrapper for fifo's. 906 * 907 * Update the times on the inode then do device close. 908 */ 909 int 910 lfsfifo_close(void *v) 911 { 912 struct vop_close_args /* { 913 struct vnode *a_vp; 914 int a_fflag; 915 struct ucred *a_cred; 916 struct proc *a_p; 917 } */ *ap = v; 918 struct vnode *vp; 919 struct inode *ip; 920 struct timespec ts; 921 922 vp = ap->a_vp; 923 ip = VTOI(vp); 924 if (ap->a_vp->v_usecount > 1) { 925 TIMEVAL_TO_TIMESPEC(&time, &ts); 926 LFS_ITIMES(ip, &ts, &ts, &ts); 927 } 928 return (VOCALL (fifo_vnodeop_p, VOFFSET(vop_close), ap)); 929 } 930 931 /* 932 * Reclaim an inode so that it can be used for other purposes. 933 */ 934 int lfs_no_inactive = 0; 935 936 int 937 lfs_reclaim(void *v) 938 { 939 struct vop_reclaim_args /* { 940 struct vnode *a_vp; 941 struct proc *a_p; 942 } */ *ap = v; 943 struct vnode *vp = ap->a_vp; 944 int error; 945 946 LFS_CLR_UINO(VTOI(vp), IN_ALLMOD); 947 if ((error = ufs_reclaim(vp, ap->a_p))) 948 return (error); 949 pool_put(&lfs_inode_pool, vp->v_data); 950 vp->v_data = NULL; 951 return (0); 952 } 953 954 int 955 lfs_getpages(void *v) 956 { 957 struct vop_getpages_args /* { 958 struct vnode *a_vp; 959 voff_t a_offset; 960 struct vm_page **a_m; 961 int *a_count; 962 int a_centeridx; 963 vm_prot_t a_access_type; 964 int a_advice; 965 int a_flags; 966 } */ *ap = v; 967 968 if ((ap->a_access_type & VM_PROT_WRITE) != 0) { 969 LFS_SET_UINO(VTOI(ap->a_vp), IN_MODIFIED); 970 } 971 return genfs_compat_getpages(v); 972 } 973 974 int 975 lfs_putpages(void *v) 976 { 977 int error; 978 979 error = genfs_putpages(v); 980 return error; 981 } 982
Indexes created Sat Oct 18 21:09:54 GMT 2025