lfs_vnops.c revision 1.50.2.2
1 /* $NetBSD: lfs_vnops.c,v 1.50.2.2 2001/08/24 00:13:30 nathanw 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/param.h> 74 #include <sys/systm.h> 75 #include <sys/namei.h> 76 #include <sys/resourcevar.h> 77 #include <sys/kernel.h> 78 #include <sys/file.h> 79 #include <sys/stat.h> 80 #include <sys/buf.h> 81 #include <sys/proc.h> 82 #include <sys/conf.h> 83 #include <sys/mount.h> 84 #include <sys/vnode.h> 85 #include <sys/malloc.h> 86 #include <sys/pool.h> 87 #include <sys/signalvar.h> 88 89 #include <miscfs/fifofs/fifo.h> 90 #include <miscfs/genfs/genfs.h> 91 #include <miscfs/specfs/specdev.h> 92 93 #include <ufs/ufs/quota.h> 94 #include <ufs/ufs/inode.h> 95 #include <ufs/ufs/dir.h> 96 #include <ufs/ufs/ufsmount.h> 97 #include <ufs/ufs/ufs_extern.h> 98 99 #include <ufs/lfs/lfs.h> 100 #include <ufs/lfs/lfs_extern.h> 101 102 /* Global vfs data structures for lfs. */ 103 int (**lfs_vnodeop_p)(void *); 104 const struct vnodeopv_entry_desc lfs_vnodeop_entries[] = { 105 { &vop_default_desc, vn_default_error }, 106 { &vop_lookup_desc, ufs_lookup }, /* lookup */ 107 { &vop_create_desc, lfs_create }, /* create */ 108 { &vop_whiteout_desc, lfs_whiteout }, /* whiteout */ 109 { &vop_mknod_desc, lfs_mknod }, /* mknod */ 110 { &vop_open_desc, ufs_open }, /* open */ 111 { &vop_close_desc, lfs_close }, /* close */ 112 { &vop_access_desc, ufs_access }, /* access */ 113 { &vop_getattr_desc, lfs_getattr }, /* getattr */ 114 { &vop_setattr_desc, ufs_setattr }, /* setattr */ 115 { &vop_read_desc, lfs_read }, /* read */ 116 { &vop_write_desc, lfs_write }, /* write */ 117 { &vop_lease_desc, ufs_lease_check }, /* lease */ 118 { &vop_ioctl_desc, ufs_ioctl }, /* ioctl */ 119 { &vop_fcntl_desc, ufs_fcntl }, /* fcntl */ 120 { &vop_poll_desc, ufs_poll }, /* poll */ 121 { &vop_revoke_desc, ufs_revoke }, /* revoke */ 122 { &vop_mmap_desc, ufs_mmap }, /* mmap */ 123 { &vop_fsync_desc, lfs_fsync }, /* fsync */ 124 { &vop_seek_desc, ufs_seek }, /* seek */ 125 { &vop_remove_desc, lfs_remove }, /* remove */ 126 { &vop_link_desc, lfs_link }, /* link */ 127 { &vop_rename_desc, lfs_rename }, /* rename */ 128 { &vop_mkdir_desc, lfs_mkdir }, /* mkdir */ 129 { &vop_rmdir_desc, lfs_rmdir }, /* rmdir */ 130 { &vop_symlink_desc, lfs_symlink }, /* symlink */ 131 { &vop_readdir_desc, ufs_readdir }, /* readdir */ 132 { &vop_readlink_desc, ufs_readlink }, /* readlink */ 133 { &vop_abortop_desc, ufs_abortop }, /* abortop */ 134 { &vop_inactive_desc, lfs_inactive }, /* inactive */ 135 { &vop_reclaim_desc, lfs_reclaim }, /* reclaim */ 136 { &vop_lock_desc, ufs_lock }, /* lock */ 137 { &vop_unlock_desc, ufs_unlock }, /* unlock */ 138 { &vop_bmap_desc, ufs_bmap }, /* bmap */ 139 { &vop_strategy_desc, ufs_strategy }, /* strategy */ 140 { &vop_print_desc, ufs_print }, /* print */ 141 { &vop_islocked_desc, ufs_islocked }, /* islocked */ 142 { &vop_pathconf_desc, ufs_pathconf }, /* pathconf */ 143 { &vop_advlock_desc, ufs_advlock }, /* advlock */ 144 { &vop_blkatoff_desc, lfs_blkatoff }, /* blkatoff */ 145 { &vop_valloc_desc, lfs_valloc }, /* valloc */ 146 { &vop_balloc_desc, lfs_balloc }, /* balloc */ 147 { &vop_vfree_desc, lfs_vfree }, /* vfree */ 148 { &vop_truncate_desc, lfs_truncate }, /* truncate */ 149 { &vop_update_desc, lfs_update }, /* update */ 150 { &vop_bwrite_desc, lfs_bwrite }, /* bwrite */ 151 { NULL, NULL } 152 }; 153 const struct vnodeopv_desc lfs_vnodeop_opv_desc = 154 { &lfs_vnodeop_p, lfs_vnodeop_entries }; 155 156 int (**lfs_specop_p)(void *); 157 const struct vnodeopv_entry_desc lfs_specop_entries[] = { 158 { &vop_default_desc, vn_default_error }, 159 { &vop_lookup_desc, spec_lookup }, /* lookup */ 160 { &vop_create_desc, spec_create }, /* create */ 161 { &vop_mknod_desc, spec_mknod }, /* mknod */ 162 { &vop_open_desc, spec_open }, /* open */ 163 { &vop_close_desc, ufsspec_close }, /* close */ 164 { &vop_access_desc, ufs_access }, /* access */ 165 { &vop_getattr_desc, lfs_getattr }, /* getattr */ 166 { &vop_setattr_desc, ufs_setattr }, /* setattr */ 167 { &vop_read_desc, ufsspec_read }, /* read */ 168 { &vop_write_desc, ufsspec_write }, /* write */ 169 { &vop_lease_desc, spec_lease_check }, /* lease */ 170 { &vop_ioctl_desc, spec_ioctl }, /* ioctl */ 171 { &vop_fcntl_desc, ufs_fcntl }, /* fcntl */ 172 { &vop_poll_desc, spec_poll }, /* poll */ 173 { &vop_revoke_desc, spec_revoke }, /* revoke */ 174 { &vop_mmap_desc, spec_mmap }, /* mmap */ 175 { &vop_fsync_desc, spec_fsync }, /* fsync */ 176 { &vop_seek_desc, spec_seek }, /* seek */ 177 { &vop_remove_desc, spec_remove }, /* remove */ 178 { &vop_link_desc, spec_link }, /* link */ 179 { &vop_rename_desc, spec_rename }, /* rename */ 180 { &vop_mkdir_desc, spec_mkdir }, /* mkdir */ 181 { &vop_rmdir_desc, spec_rmdir }, /* rmdir */ 182 { &vop_symlink_desc, spec_symlink }, /* symlink */ 183 { &vop_readdir_desc, spec_readdir }, /* readdir */ 184 { &vop_readlink_desc, spec_readlink }, /* readlink */ 185 { &vop_abortop_desc, spec_abortop }, /* abortop */ 186 { &vop_inactive_desc, lfs_inactive }, /* inactive */ 187 { &vop_reclaim_desc, lfs_reclaim }, /* reclaim */ 188 { &vop_lock_desc, ufs_lock }, /* lock */ 189 { &vop_unlock_desc, ufs_unlock }, /* unlock */ 190 { &vop_bmap_desc, spec_bmap }, /* bmap */ 191 { &vop_strategy_desc, spec_strategy }, /* strategy */ 192 { &vop_print_desc, ufs_print }, /* print */ 193 { &vop_islocked_desc, ufs_islocked }, /* islocked */ 194 { &vop_pathconf_desc, spec_pathconf }, /* pathconf */ 195 { &vop_advlock_desc, spec_advlock }, /* advlock */ 196 { &vop_blkatoff_desc, spec_blkatoff }, /* blkatoff */ 197 { &vop_valloc_desc, spec_valloc }, /* valloc */ 198 { &vop_vfree_desc, lfs_vfree }, /* vfree */ 199 { &vop_truncate_desc, spec_truncate }, /* truncate */ 200 { &vop_update_desc, lfs_update }, /* update */ 201 { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ 202 { &vop_getpages_desc, spec_getpages }, /* getpages */ 203 { &vop_putpages_desc, spec_putpages }, /* putpages */ 204 { &vop_size_desc, spec_size }, /* size */ 205 { NULL, NULL } 206 }; 207 const struct vnodeopv_desc lfs_specop_opv_desc = 208 { &lfs_specop_p, lfs_specop_entries }; 209 210 int (**lfs_fifoop_p)(void *); 211 const struct vnodeopv_entry_desc lfs_fifoop_entries[] = { 212 { &vop_default_desc, vn_default_error }, 213 { &vop_lookup_desc, fifo_lookup }, /* lookup */ 214 { &vop_create_desc, fifo_create }, /* create */ 215 { &vop_mknod_desc, fifo_mknod }, /* mknod */ 216 { &vop_open_desc, fifo_open }, /* open */ 217 { &vop_close_desc, ufsfifo_close }, /* close */ 218 { &vop_access_desc, ufs_access }, /* access */ 219 { &vop_getattr_desc, lfs_getattr }, /* getattr */ 220 { &vop_setattr_desc, ufs_setattr }, /* setattr */ 221 { &vop_read_desc, ufsfifo_read }, /* read */ 222 { &vop_write_desc, ufsfifo_write }, /* write */ 223 { &vop_lease_desc, fifo_lease_check }, /* lease */ 224 { &vop_ioctl_desc, fifo_ioctl }, /* ioctl */ 225 { &vop_fcntl_desc, ufs_fcntl }, /* fcntl */ 226 { &vop_poll_desc, fifo_poll }, /* poll */ 227 { &vop_revoke_desc, fifo_revoke }, /* revoke */ 228 { &vop_mmap_desc, fifo_mmap }, /* mmap */ 229 { &vop_fsync_desc, fifo_fsync }, /* fsync */ 230 { &vop_seek_desc, fifo_seek }, /* seek */ 231 { &vop_remove_desc, fifo_remove }, /* remove */ 232 { &vop_link_desc, fifo_link }, /* link */ 233 { &vop_rename_desc, fifo_rename }, /* rename */ 234 { &vop_mkdir_desc, fifo_mkdir }, /* mkdir */ 235 { &vop_rmdir_desc, fifo_rmdir }, /* rmdir */ 236 { &vop_symlink_desc, fifo_symlink }, /* symlink */ 237 { &vop_readdir_desc, fifo_readdir }, /* readdir */ 238 { &vop_readlink_desc, fifo_readlink }, /* readlink */ 239 { &vop_abortop_desc, fifo_abortop }, /* abortop */ 240 { &vop_inactive_desc, lfs_inactive }, /* inactive */ 241 { &vop_reclaim_desc, lfs_reclaim }, /* reclaim */ 242 { &vop_lock_desc, ufs_lock }, /* lock */ 243 { &vop_unlock_desc, ufs_unlock }, /* unlock */ 244 { &vop_bmap_desc, fifo_bmap }, /* bmap */ 245 { &vop_strategy_desc, fifo_strategy }, /* strategy */ 246 { &vop_print_desc, ufs_print }, /* print */ 247 { &vop_islocked_desc, ufs_islocked }, /* islocked */ 248 { &vop_pathconf_desc, fifo_pathconf }, /* pathconf */ 249 { &vop_advlock_desc, fifo_advlock }, /* advlock */ 250 { &vop_blkatoff_desc, fifo_blkatoff }, /* blkatoff */ 251 { &vop_valloc_desc, fifo_valloc }, /* valloc */ 252 { &vop_vfree_desc, lfs_vfree }, /* vfree */ 253 { &vop_truncate_desc, fifo_truncate }, /* truncate */ 254 { &vop_update_desc, lfs_update }, /* update */ 255 { &vop_bwrite_desc, lfs_bwrite }, /* bwrite */ 256 { NULL, NULL } 257 }; 258 const struct vnodeopv_desc lfs_fifoop_opv_desc = 259 { &lfs_fifoop_p, lfs_fifoop_entries }; 260 261 /* 262 * A function version of LFS_ITIMES, for the UFS functions which call ITIMES 263 */ 264 void 265 lfs_itimes(struct inode *ip, struct timespec *acc, struct timespec *mod, struct timespec *cre) 266 { 267 LFS_ITIMES(ip, acc, mod, cre); 268 } 269 270 #define LFS_READWRITE 271 #include <ufs/ufs/ufs_readwrite.c> 272 #undef LFS_READWRITE 273 274 /* 275 * Synch an open file. 276 */ 277 /* ARGSUSED */ 278 int 279 lfs_fsync(void *v) 280 { 281 struct vop_fsync_args /* { 282 struct vnode *a_vp; 283 struct ucred *a_cred; 284 int a_flags; 285 off_t offlo; 286 off_t offhi; 287 struct proc *a_p; 288 } */ *ap = v; 289 290 /* Ignore the trickle syncer */ 291 if (ap->a_flags & FSYNC_LAZY) 292 return 0; 293 294 return (VOP_UPDATE(ap->a_vp, NULL, NULL, 295 (ap->a_flags & FSYNC_WAIT) != 0 ? UPDATE_WAIT : 0)); 296 } 297 298 /* 299 * Take IN_ADIROP off, then call ufs_inactive. 300 */ 301 int 302 lfs_inactive(void *v) 303 { 304 struct vop_inactive_args /* { 305 struct vnode *a_vp; 306 struct proc *a_p; 307 } */ *ap = v; 308 struct inode *ip = VTOI(ap->a_vp); 309 310 if (ip->i_flag & IN_ADIROP) 311 --ip->i_lfs->lfs_nadirop; 312 ip->i_flag &= ~IN_ADIROP; 313 return ufs_inactive(v); 314 } 315 316 /* 317 * These macros are used to bracket UFS directory ops, so that we can 318 * identify all the pages touched during directory ops which need to 319 * be ordered and flushed atomically, so that they may be recovered. 320 */ 321 /* 322 * XXX KS - Because we have to mark nodes VDIROP in order to prevent 323 * the cache from reclaiming them while a dirop is in progress, we must 324 * also manage the number of nodes so marked (otherwise we can run out). 325 * We do this by setting lfs_dirvcount to the number of marked vnodes; it 326 * is decremented during segment write, when VDIROP is taken off. 327 */ 328 #define SET_DIROP(vp) lfs_set_dirop(vp) 329 static int lfs_set_dirop(struct vnode *); 330 extern int lfs_dirvcount; 331 332 static int 333 lfs_set_dirop(struct vnode *vp) 334 { 335 struct lfs *fs; 336 int error; 337 338 fs = VTOI(vp)->i_lfs; 339 /* 340 * We might need one directory block plus supporting indirect blocks, 341 * plus an inode block and ifile page for the new vnode. 342 */ 343 if ((error = lfs_reserve(fs, vp, btofsb(fs, (NIADDR + 3) << fs->lfs_bshift))) != 0) 344 return (error); 345 if (fs->lfs_dirops == 0) 346 lfs_check(vp, LFS_UNUSED_LBN, 0); 347 while (fs->lfs_writer || lfs_dirvcount > LFS_MAXDIROP) { 348 if(fs->lfs_writer) 349 tsleep(&fs->lfs_dirops, PRIBIO + 1, "lfs_dirop", 0); 350 if(lfs_dirvcount > LFS_MAXDIROP && fs->lfs_dirops==0) { 351 ++fs->lfs_writer; 352 lfs_flush(fs, 0); 353 if(--fs->lfs_writer==0) 354 wakeup(&fs->lfs_dirops); 355 } 356 357 if(lfs_dirvcount > LFS_MAXDIROP) { 358 #ifdef DEBUG_LFS 359 printf("lfs_set_dirop: sleeping with dirops=%d, " 360 "dirvcount=%d\n", fs->lfs_dirops, 361 lfs_dirvcount); 362 #endif 363 if((error = tsleep(&lfs_dirvcount, PCATCH|PUSER, 364 "lfs_maxdirop", 0)) !=0) { 365 lfs_reserve(fs, vp, -btofsb(fs, (NIADDR + 3) << fs->lfs_bshift)); 366 return error; 367 } 368 } 369 } 370 ++fs->lfs_dirops; 371 fs->lfs_doifile = 1; 372 373 /* Hold a reference so SET_ENDOP will be happy */ 374 lfs_vref(vp); 375 376 return 0; 377 } 378 379 #define SET_ENDOP(fs,vp,str) { \ 380 --(fs)->lfs_dirops; \ 381 if (!(fs)->lfs_dirops) { \ 382 if ((fs)->lfs_nadirop) { \ 383 panic("SET_ENDOP: %s: no dirops but nadirop=%d\n", \ 384 (str), (fs)->lfs_nadirop); \ 385 } \ 386 wakeup(&(fs)->lfs_writer); \ 387 lfs_check((vp),LFS_UNUSED_LBN,0); \ 388 } \ 389 lfs_reserve((fs), vp, -btofsb((fs), (NIADDR + 3) << (fs)->lfs_bshift)); /* XXX */ \ 390 lfs_vunref(vp); \ 391 } 392 393 #define MARK_VNODE(dvp) do { \ 394 if (!((dvp)->v_flag & VDIROP)) { \ 395 (void)lfs_vref(dvp); \ 396 ++lfs_dirvcount; \ 397 } \ 398 (dvp)->v_flag |= VDIROP; \ 399 if (!(VTOI(dvp)->i_flag & IN_ADIROP)) { \ 400 ++VTOI(dvp)->i_lfs->lfs_nadirop; \ 401 } \ 402 VTOI(dvp)->i_flag |= IN_ADIROP; \ 403 } while(0) 404 405 #define UNMARK_VNODE(vp) lfs_unmark_vnode(vp) 406 407 void lfs_unmark_vnode(struct vnode *vp) 408 { 409 struct inode *ip; 410 411 ip = VTOI(vp); 412 413 if (ip->i_flag & IN_ADIROP) 414 --ip->i_lfs->lfs_nadirop; 415 ip->i_flag &= ~IN_ADIROP; 416 } 417 418 int 419 lfs_symlink(void *v) 420 { 421 struct vop_symlink_args /* { 422 struct vnode *a_dvp; 423 struct vnode **a_vpp; 424 struct componentname *a_cnp; 425 struct vattr *a_vap; 426 char *a_target; 427 } */ *ap = v; 428 int error; 429 430 if ((error = SET_DIROP(ap->a_dvp)) != 0) { 431 vput(ap->a_dvp); 432 return error; 433 } 434 MARK_VNODE(ap->a_dvp); 435 error = ufs_symlink(ap); 436 UNMARK_VNODE(ap->a_dvp); 437 if (*(ap->a_vpp)) 438 UNMARK_VNODE(*(ap->a_vpp)); 439 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"symlink"); 440 return (error); 441 } 442 443 int 444 lfs_mknod(void *v) 445 { 446 struct vop_mknod_args /* { 447 struct vnode *a_dvp; 448 struct vnode **a_vpp; 449 struct componentname *a_cnp; 450 struct vattr *a_vap; 451 } */ *ap = v; 452 struct vattr *vap = ap->a_vap; 453 struct vnode **vpp = ap->a_vpp; 454 struct inode *ip; 455 int error; 456 struct mount *mp; 457 ino_t ino; 458 459 if ((error = SET_DIROP(ap->a_dvp)) != 0) { 460 vput(ap->a_dvp); 461 return error; 462 } 463 MARK_VNODE(ap->a_dvp); 464 error = ufs_makeinode(MAKEIMODE(vap->va_type, vap->va_mode), 465 ap->a_dvp, vpp, ap->a_cnp); 466 UNMARK_VNODE(ap->a_dvp); 467 if (*(ap->a_vpp)) 468 UNMARK_VNODE(*(ap->a_vpp)); 469 470 /* Either way we're done with the dirop at this point */ 471 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"mknod"); 472 473 if (error) 474 return (error); 475 476 ip = VTOI(*vpp); 477 mp = (*vpp)->v_mount; 478 ino = ip->i_number; 479 ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE; 480 if (vap->va_rdev != VNOVAL) { 481 /* 482 * Want to be able to use this to make badblock 483 * inodes, so don't truncate the dev number. 484 */ 485 #if 0 486 ip->i_ffs_rdev = ufs_rw32(vap->va_rdev, 487 UFS_MPNEEDSWAP((*vpp)->v_mount)); 488 #else 489 ip->i_ffs_rdev = vap->va_rdev; 490 #endif 491 } 492 /* 493 * Call fsync to write the vnode so that we don't have to deal with 494 * flushing it when it's marked VDIROP|VXLOCK. 495 * 496 * XXX KS - If we can't flush we also can't call vgone(), so must 497 * return. But, that leaves this vnode in limbo, also not good. 498 * Can this ever happen (barring hardware failure)? 499 */ 500 if ((error = VOP_FSYNC(*vpp, NOCRED, FSYNC_WAIT, 0, 0, 501 curproc->l_proc)) != 0) { 502 printf("Couldn't fsync in mknod (ino %d)---what do I do?\n", 503 VTOI(*vpp)->i_number); 504 return (error); 505 } 506 /* 507 * Remove vnode so that it will be reloaded by VFS_VGET and 508 * checked to see if it is an alias of an existing entry in 509 * the inode cache. 510 */ 511 /* Used to be vput, but that causes us to call VOP_INACTIVE twice. */ 512 VOP_UNLOCK(*vpp, 0); 513 lfs_vunref(*vpp); 514 (*vpp)->v_type = VNON; 515 vgone(*vpp); 516 error = VFS_VGET(mp, ino, vpp); 517 if (error != 0) { 518 *vpp = NULL; 519 return (error); 520 } 521 return (0); 522 } 523 524 int 525 lfs_create(void *v) 526 { 527 struct vop_create_args /* { 528 struct vnode *a_dvp; 529 struct vnode **a_vpp; 530 struct componentname *a_cnp; 531 struct vattr *a_vap; 532 } */ *ap = v; 533 int error; 534 535 if((error = SET_DIROP(ap->a_dvp)) != 0) { 536 vput(ap->a_dvp); 537 return error; 538 } 539 MARK_VNODE(ap->a_dvp); 540 error = ufs_create(ap); 541 UNMARK_VNODE(ap->a_dvp); 542 if (*(ap->a_vpp)) 543 UNMARK_VNODE(*(ap->a_vpp)); 544 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"create"); 545 return (error); 546 } 547 548 int 549 lfs_whiteout(void *v) 550 { 551 struct vop_whiteout_args /* { 552 struct vnode *a_dvp; 553 struct componentname *a_cnp; 554 int a_flags; 555 } */ *ap = v; 556 int error; 557 558 if ((error = SET_DIROP(ap->a_dvp)) != 0) 559 /* XXX no unlock here? */ 560 return error; 561 MARK_VNODE(ap->a_dvp); 562 error = ufs_whiteout(ap); 563 UNMARK_VNODE(ap->a_dvp); 564 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"whiteout"); 565 return (error); 566 } 567 568 int 569 lfs_mkdir(void *v) 570 { 571 struct vop_mkdir_args /* { 572 struct vnode *a_dvp; 573 struct vnode **a_vpp; 574 struct componentname *a_cnp; 575 struct vattr *a_vap; 576 } */ *ap = v; 577 int error; 578 579 if((error = SET_DIROP(ap->a_dvp)) != 0) { 580 vput(ap->a_dvp); 581 return error; 582 } 583 MARK_VNODE(ap->a_dvp); 584 error = ufs_mkdir(ap); 585 UNMARK_VNODE(ap->a_dvp); 586 if (*(ap->a_vpp)) 587 UNMARK_VNODE(*(ap->a_vpp)); 588 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"mkdir"); 589 return (error); 590 } 591 592 int 593 lfs_remove(void *v) 594 { 595 struct vop_remove_args /* { 596 struct vnode *a_dvp; 597 struct vnode *a_vp; 598 struct componentname *a_cnp; 599 } */ *ap = v; 600 struct vnode *dvp, *vp; 601 int error; 602 603 dvp = ap->a_dvp; 604 vp = ap->a_vp; 605 if ((error = SET_DIROP(dvp)) != 0) { 606 if (dvp == vp) 607 vrele(vp); 608 else 609 vput(vp); 610 vput(dvp); 611 return error; 612 } 613 MARK_VNODE(dvp); 614 MARK_VNODE(vp); 615 error = ufs_remove(ap); 616 UNMARK_VNODE(dvp); 617 UNMARK_VNODE(vp); 618 619 /* 620 * If ufs_remove failed, vp doesn't need to be VDIROP any more. 621 * If it succeeded, we can go ahead and wipe out vp, since 622 * its loss won't appear on disk until checkpoint, and by then 623 * dvp will have been written, completing the dirop. 624 */ 625 --lfs_dirvcount; 626 vp->v_flag &= ~VDIROP; 627 wakeup(&lfs_dirvcount); 628 vrele(vp); 629 630 SET_ENDOP(VTOI(dvp)->i_lfs,dvp,"remove"); 631 return (error); 632 } 633 634 int 635 lfs_rmdir(void *v) 636 { 637 struct vop_rmdir_args /* { 638 struct vnodeop_desc *a_desc; 639 struct vnode *a_dvp; 640 struct vnode *a_vp; 641 struct componentname *a_cnp; 642 } */ *ap = v; 643 int error; 644 645 if ((error = SET_DIROP(ap->a_dvp)) != 0) { 646 vrele(ap->a_dvp); 647 if (ap->a_vp->v_mountedhere != NULL) 648 VOP_UNLOCK(ap->a_dvp, 0); 649 vput(ap->a_vp); 650 return error; 651 } 652 MARK_VNODE(ap->a_dvp); 653 MARK_VNODE(ap->a_vp); 654 error = ufs_rmdir(ap); 655 UNMARK_VNODE(ap->a_dvp); 656 UNMARK_VNODE(ap->a_vp); 657 658 /* 659 * If ufs_rmdir failed, vp doesn't need to be VDIROP any more. 660 * If it succeeded, we can go ahead and wipe out vp, since 661 * its loss won't appear on disk until checkpoint, and by then 662 * dvp will have been written, completing the dirop. 663 */ 664 --lfs_dirvcount; 665 ap->a_vp->v_flag &= ~VDIROP; 666 wakeup(&lfs_dirvcount); 667 vrele(ap->a_vp); 668 669 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"rmdir"); 670 return (error); 671 } 672 673 int 674 lfs_link(void *v) 675 { 676 struct vop_link_args /* { 677 struct vnode *a_dvp; 678 struct vnode *a_vp; 679 struct componentname *a_cnp; 680 } */ *ap = v; 681 int error; 682 683 if ((error = SET_DIROP(ap->a_dvp)) != 0) { 684 vput(ap->a_dvp); 685 return error; 686 } 687 MARK_VNODE(ap->a_dvp); 688 error = ufs_link(ap); 689 UNMARK_VNODE(ap->a_dvp); 690 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"link"); 691 return (error); 692 } 693 694 int 695 lfs_rename(void *v) 696 { 697 struct vop_rename_args /* { 698 struct vnode *a_fdvp; 699 struct vnode *a_fvp; 700 struct componentname *a_fcnp; 701 struct vnode *a_tdvp; 702 struct vnode *a_tvp; 703 struct componentname *a_tcnp; 704 } */ *ap = v; 705 struct vnode *tvp, *fvp, *tdvp, *fdvp; 706 int error; 707 struct lfs *fs; 708 709 fs = VTOI(ap->a_fdvp)->i_lfs; 710 tvp = ap->a_tvp; 711 tdvp = ap->a_tdvp; 712 fvp = ap->a_fvp; 713 fdvp = ap->a_fdvp; 714 715 /* 716 * Check for cross-device rename. 717 * If it is, we don't want to set dirops, just error out. 718 * (In particular note that MARK_VNODE(tdvp) will DTWT on 719 * a cross-device rename.) 720 * 721 * Copied from ufs_rename. 722 */ 723 if ((fvp->v_mount != tdvp->v_mount) || 724 (tvp && (fvp->v_mount != tvp->v_mount))) { 725 error = EXDEV; 726 goto errout; 727 } 728 if ((error = SET_DIROP(fdvp))!=0) 729 goto errout; 730 MARK_VNODE(fdvp); 731 MARK_VNODE(tdvp); 732 error = ufs_rename(ap); 733 UNMARK_VNODE(fdvp); 734 UNMARK_VNODE(tdvp); 735 SET_ENDOP(fs,fdvp,"rename"); 736 return (error); 737 738 errout: 739 VOP_ABORTOP(tdvp, ap->a_tcnp); /* XXX, why not in NFS? */ 740 if (tdvp == tvp) 741 vrele(tdvp); 742 else 743 vput(tdvp); 744 if (tvp) 745 vput(tvp); 746 VOP_ABORTOP(fdvp, ap->a_fcnp); /* XXX, why not in NFS? */ 747 vrele(fdvp); 748 vrele(fvp); 749 return (error); 750 } 751 752 /* XXX hack to avoid calling ITIMES in getattr */ 753 int 754 lfs_getattr(void *v) 755 { 756 struct vop_getattr_args /* { 757 struct vnode *a_vp; 758 struct vattr *a_vap; 759 struct ucred *a_cred; 760 struct proc *a_p; 761 } */ *ap = v; 762 struct vnode *vp = ap->a_vp; 763 struct inode *ip = VTOI(vp); 764 struct vattr *vap = ap->a_vap; 765 struct lfs *fs = ip->i_lfs; 766 /* 767 * Copy from inode table 768 */ 769 vap->va_fsid = ip->i_dev; 770 vap->va_fileid = ip->i_number; 771 vap->va_mode = ip->i_ffs_mode & ~IFMT; 772 vap->va_nlink = ip->i_ffs_nlink; 773 vap->va_uid = ip->i_ffs_uid; 774 vap->va_gid = ip->i_ffs_gid; 775 vap->va_rdev = (dev_t)ip->i_ffs_rdev; 776 vap->va_size = ip->i_ffs_size; 777 vap->va_atime.tv_sec = ip->i_ffs_atime; 778 vap->va_atime.tv_nsec = ip->i_ffs_atimensec; 779 vap->va_mtime.tv_sec = ip->i_ffs_mtime; 780 vap->va_mtime.tv_nsec = ip->i_ffs_mtimensec; 781 vap->va_ctime.tv_sec = ip->i_ffs_ctime; 782 vap->va_ctime.tv_nsec = ip->i_ffs_ctimensec; 783 vap->va_flags = ip->i_ffs_flags; 784 vap->va_gen = ip->i_ffs_gen; 785 /* this doesn't belong here */ 786 if (vp->v_type == VBLK) 787 vap->va_blocksize = BLKDEV_IOSIZE; 788 else if (vp->v_type == VCHR) 789 vap->va_blocksize = MAXBSIZE; 790 else 791 vap->va_blocksize = vp->v_mount->mnt_stat.f_iosize; 792 vap->va_bytes = fsbtob(fs, (u_quad_t)ip->i_ffs_blocks); 793 vap->va_type = vp->v_type; 794 vap->va_filerev = ip->i_modrev; 795 return (0); 796 } 797 798 /* 799 * Close called 800 * 801 * XXX -- we were using ufs_close, but since it updates the 802 * times on the inode, we might need to bump the uinodes 803 * count. 804 */ 805 /* ARGSUSED */ 806 int 807 lfs_close(void *v) 808 { 809 struct vop_close_args /* { 810 struct vnode *a_vp; 811 int a_fflag; 812 struct ucred *a_cred; 813 struct proc *a_p; 814 } */ *ap = v; 815 struct vnode *vp = ap->a_vp; 816 struct inode *ip = VTOI(vp); 817 struct timespec ts; 818 819 simple_lock(&vp->v_interlock); 820 if (vp->v_usecount > 1) { 821 TIMEVAL_TO_TIMESPEC(&time, &ts); 822 LFS_ITIMES(ip, &ts, &ts, &ts); 823 } 824 simple_unlock(&vp->v_interlock); 825 return (0); 826 } 827 828 /* 829 * Reclaim an inode so that it can be used for other purposes. 830 */ 831 int lfs_no_inactive = 0; 832 833 int 834 lfs_reclaim(void *v) 835 { 836 struct vop_reclaim_args /* { 837 struct vnode *a_vp; 838 struct proc *a_p; 839 } */ *ap = v; 840 struct vnode *vp = ap->a_vp; 841 int error; 842 843 LFS_CLR_UINO(VTOI(vp), IN_ALLMOD); 844 if ((error = ufs_reclaim(vp, ap->a_p))) 845 return (error); 846 pool_put(&lfs_inode_pool, vp->v_data); 847 vp->v_data = NULL; 848 return (0); 849 } 850
Indexes created Mon Oct 20 15:10:11 GMT 2025