lfs_vnops.c revision 1.50.2.1
1 /* $NetBSD: lfs_vnops.c,v 1.50.2.1 2001/03/05 22:50:08 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) __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 { (struct vnodeop_desc*)NULL, (int(*) __P((void *)))NULL } 152 }; 153 const struct vnodeopv_desc lfs_vnodeop_opv_desc = 154 { &lfs_vnodeop_p, lfs_vnodeop_entries }; 155 156 int (**lfs_specop_p) __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 { (struct vnodeop_desc*)NULL, (int(*) __P((void *)))NULL } 203 }; 204 const struct vnodeopv_desc lfs_specop_opv_desc = 205 { &lfs_specop_p, lfs_specop_entries }; 206 207 int (**lfs_fifoop_p) __P((void *)); 208 const struct vnodeopv_entry_desc lfs_fifoop_entries[] = { 209 { &vop_default_desc, vn_default_error }, 210 { &vop_lookup_desc, fifo_lookup }, /* lookup */ 211 { &vop_create_desc, fifo_create }, /* create */ 212 { &vop_mknod_desc, fifo_mknod }, /* mknod */ 213 { &vop_open_desc, fifo_open }, /* open */ 214 { &vop_close_desc, ufsfifo_close }, /* close */ 215 { &vop_access_desc, ufs_access }, /* access */ 216 { &vop_getattr_desc, lfs_getattr }, /* getattr */ 217 { &vop_setattr_desc, ufs_setattr }, /* setattr */ 218 { &vop_read_desc, ufsfifo_read }, /* read */ 219 { &vop_write_desc, ufsfifo_write }, /* write */ 220 { &vop_lease_desc, fifo_lease_check }, /* lease */ 221 { &vop_ioctl_desc, fifo_ioctl }, /* ioctl */ 222 { &vop_fcntl_desc, ufs_fcntl }, /* fcntl */ 223 { &vop_poll_desc, fifo_poll }, /* poll */ 224 { &vop_revoke_desc, fifo_revoke }, /* revoke */ 225 { &vop_mmap_desc, fifo_mmap }, /* mmap */ 226 { &vop_fsync_desc, fifo_fsync }, /* fsync */ 227 { &vop_seek_desc, fifo_seek }, /* seek */ 228 { &vop_remove_desc, fifo_remove }, /* remove */ 229 { &vop_link_desc, fifo_link }, /* link */ 230 { &vop_rename_desc, fifo_rename }, /* rename */ 231 { &vop_mkdir_desc, fifo_mkdir }, /* mkdir */ 232 { &vop_rmdir_desc, fifo_rmdir }, /* rmdir */ 233 { &vop_symlink_desc, fifo_symlink }, /* symlink */ 234 { &vop_readdir_desc, fifo_readdir }, /* readdir */ 235 { &vop_readlink_desc, fifo_readlink }, /* readlink */ 236 { &vop_abortop_desc, fifo_abortop }, /* abortop */ 237 { &vop_inactive_desc, lfs_inactive }, /* inactive */ 238 { &vop_reclaim_desc, lfs_reclaim }, /* reclaim */ 239 { &vop_lock_desc, ufs_lock }, /* lock */ 240 { &vop_unlock_desc, ufs_unlock }, /* unlock */ 241 { &vop_bmap_desc, fifo_bmap }, /* bmap */ 242 { &vop_strategy_desc, fifo_strategy }, /* strategy */ 243 { &vop_print_desc, ufs_print }, /* print */ 244 { &vop_islocked_desc, ufs_islocked }, /* islocked */ 245 { &vop_pathconf_desc, fifo_pathconf }, /* pathconf */ 246 { &vop_advlock_desc, fifo_advlock }, /* advlock */ 247 { &vop_blkatoff_desc, fifo_blkatoff }, /* blkatoff */ 248 { &vop_valloc_desc, fifo_valloc }, /* valloc */ 249 { &vop_vfree_desc, lfs_vfree }, /* vfree */ 250 { &vop_truncate_desc, fifo_truncate }, /* truncate */ 251 { &vop_update_desc, lfs_update }, /* update */ 252 { &vop_bwrite_desc, lfs_bwrite }, /* bwrite */ 253 { (struct vnodeop_desc*)NULL, (int(*) __P((void *)))NULL } 254 }; 255 const struct vnodeopv_desc lfs_fifoop_opv_desc = 256 { &lfs_fifoop_p, lfs_fifoop_entries }; 257 258 /* 259 * A function version of LFS_ITIMES, for the UFS functions which call ITIMES 260 */ 261 void 262 lfs_itimes(ip, acc, mod, cre) 263 struct inode *ip; 264 struct timespec *acc, *mod, *cre; 265 { 266 LFS_ITIMES(ip, acc, mod, cre); 267 } 268 269 #define LFS_READWRITE 270 #include <ufs/ufs/ufs_readwrite.c> 271 #undef LFS_READWRITE 272 273 /* 274 * Synch an open file. 275 */ 276 /* ARGSUSED */ 277 int 278 lfs_fsync(v) 279 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(v) 303 void *v; 304 { 305 struct vop_inactive_args /* { 306 struct vnode *a_vp; 307 struct proc *a_p; 308 } */ *ap = v; 309 struct inode *ip = VTOI(ap->a_vp); 310 311 if (ip->i_flag & IN_ADIROP) 312 --ip->i_lfs->lfs_nadirop; 313 ip->i_flag &= ~IN_ADIROP; 314 return ufs_inactive(v); 315 } 316 317 /* 318 * These macros are used to bracket UFS directory ops, so that we can 319 * identify all the pages touched during directory ops which need to 320 * be ordered and flushed atomically, so that they may be recovered. 321 */ 322 /* 323 * XXX KS - Because we have to mark nodes VDIROP in order to prevent 324 * the cache from reclaiming them while a dirop is in progress, we must 325 * also manage the number of nodes so marked (otherwise we can run out). 326 * We do this by setting lfs_dirvcount to the number of marked vnodes; it 327 * is decremented during segment write, when VDIROP is taken off. 328 */ 329 #define SET_DIROP(vp) lfs_set_dirop(vp) 330 static int lfs_set_dirop __P((struct vnode *)); 331 extern int lfs_dirvcount; 332 333 static int 334 lfs_set_dirop(vp) 335 struct vnode *vp; 336 { 337 struct lfs *fs; 338 int error; 339 340 fs = VTOI(vp)->i_lfs; 341 /* 342 * We might need one directory block plus supporting indirect blocks, 343 * plus an inode block and ifile page for the new vnode. 344 */ 345 if ((error = lfs_reserve(fs, vp, fsbtodb(fs, NIADDR + 3))) != 0) 346 return (error); 347 if (fs->lfs_dirops == 0) 348 lfs_check(vp, LFS_UNUSED_LBN, 0); 349 while (fs->lfs_writer || lfs_dirvcount > LFS_MAXDIROP) { 350 if(fs->lfs_writer) 351 tsleep(&fs->lfs_dirops, PRIBIO + 1, "lfs_dirop", 0); 352 if(lfs_dirvcount > LFS_MAXDIROP && fs->lfs_dirops==0) { 353 ++fs->lfs_writer; 354 lfs_flush(fs, 0); 355 if(--fs->lfs_writer==0) 356 wakeup(&fs->lfs_dirops); 357 } 358 359 if(lfs_dirvcount > LFS_MAXDIROP) { 360 #ifdef DEBUG_LFS 361 printf("lfs_set_dirop: sleeping with dirops=%d, " 362 "dirvcount=%d\n", fs->lfs_dirops, 363 lfs_dirvcount); 364 #endif 365 if((error = tsleep(&lfs_dirvcount, PCATCH|PUSER, 366 "lfs_maxdirop", 0)) !=0) { 367 lfs_reserve(fs, vp, -fsbtodb(fs, NIADDR + 3)); 368 return error; 369 } 370 } 371 } 372 ++fs->lfs_dirops; 373 fs->lfs_doifile = 1; 374 375 /* Hold a reference so SET_ENDOP will be happy */ 376 lfs_vref(vp); 377 378 return 0; 379 } 380 381 #define SET_ENDOP(fs,vp,str) { \ 382 --(fs)->lfs_dirops; \ 383 if (!(fs)->lfs_dirops) { \ 384 if ((fs)->lfs_nadirop) { \ 385 panic("SET_ENDOP: %s: no dirops but nadirop=%d\n", \ 386 (str), (fs)->lfs_nadirop); \ 387 } \ 388 wakeup(&(fs)->lfs_writer); \ 389 lfs_check((vp),LFS_UNUSED_LBN,0); \ 390 } \ 391 lfs_reserve(fs, vp, -fsbtodb(fs, NIADDR + 3)); /* XXX */ \ 392 lfs_vunref(vp); \ 393 } 394 395 #define MARK_VNODE(dvp) do { \ 396 if (!((dvp)->v_flag & VDIROP)) { \ 397 (void)lfs_vref(dvp); \ 398 ++lfs_dirvcount; \ 399 } \ 400 (dvp)->v_flag |= VDIROP; \ 401 if (!(VTOI(dvp)->i_flag & IN_ADIROP)) { \ 402 ++VTOI(dvp)->i_lfs->lfs_nadirop; \ 403 } \ 404 VTOI(dvp)->i_flag |= IN_ADIROP; \ 405 } while(0) 406 407 #define UNMARK_VNODE(vp) lfs_unmark_vnode(vp) 408 409 void lfs_unmark_vnode(vp) 410 struct vnode *vp; 411 { 412 struct inode *ip; 413 414 ip = VTOI(vp); 415 416 if (ip->i_flag & IN_ADIROP) 417 --ip->i_lfs->lfs_nadirop; 418 ip->i_flag &= ~IN_ADIROP; 419 } 420 421 int 422 lfs_symlink(v) 423 void *v; 424 { 425 struct vop_symlink_args /* { 426 struct vnode *a_dvp; 427 struct vnode **a_vpp; 428 struct componentname *a_cnp; 429 struct vattr *a_vap; 430 char *a_target; 431 } */ *ap = v; 432 int error; 433 434 if ((error = SET_DIROP(ap->a_dvp)) != 0) { 435 vput(ap->a_dvp); 436 return error; 437 } 438 MARK_VNODE(ap->a_dvp); 439 error = ufs_symlink(ap); 440 UNMARK_VNODE(ap->a_dvp); 441 if (*(ap->a_vpp)) 442 UNMARK_VNODE(*(ap->a_vpp)); 443 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"symlink"); 444 return (error); 445 } 446 447 int 448 lfs_mknod(v) 449 void *v; 450 { 451 struct vop_mknod_args /* { 452 struct vnode *a_dvp; 453 struct vnode **a_vpp; 454 struct componentname *a_cnp; 455 struct vattr *a_vap; 456 } */ *ap = v; 457 struct vattr *vap = ap->a_vap; 458 struct vnode **vpp = ap->a_vpp; 459 struct inode *ip; 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_makeinode(MAKEIMODE(vap->va_type, vap->va_mode), 468 ap->a_dvp, vpp, ap->a_cnp); 469 UNMARK_VNODE(ap->a_dvp); 470 if (*(ap->a_vpp)) 471 UNMARK_VNODE(*(ap->a_vpp)); 472 473 /* Either way we're done with the dirop at this point */ 474 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"mknod"); 475 476 if (error) 477 return (error); 478 479 ip = VTOI(*vpp); 480 ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE; 481 if (vap->va_rdev != VNOVAL) { 482 /* 483 * Want to be able to use this to make badblock 484 * inodes, so don't truncate the dev number. 485 */ 486 #if 0 487 ip->i_ffs_rdev = ufs_rw32(vap->va_rdev, 488 UFS_MPNEEDSWAP((*vpp)->v_mount)); 489 #else 490 ip->i_ffs_rdev = vap->va_rdev; 491 #endif 492 } 493 /* 494 * Call fsync to write the vnode so that we don't have to deal with 495 * flushing it when it's marked VDIROP|VXLOCK. 496 * 497 * XXX KS - If we can't flush we also can't call vgone(), so must 498 * return. But, that leaves this vnode in limbo, also not good. 499 * Can this ever happen (barring hardware failure)? 500 */ 501 if ((error = VOP_FSYNC(*vpp, NOCRED, FSYNC_WAIT, 0, 0, 502 curproc->l_proc)) != 0) { 503 printf("Couldn't fsync in mknod (ino %d)---what do I do?\n", 504 VTOI(*vpp)->i_number); 505 return (error); 506 } 507 /* 508 * Remove vnode so that it will be reloaded by VFS_VGET and 509 * checked to see if it is an alias of an existing entry in 510 * the inode cache. 511 */ 512 /* Used to be vput, but that causes us to call VOP_INACTIVE twice. */ 513 VOP_UNLOCK(*vpp, 0); 514 lfs_vunref(*vpp); 515 (*vpp)->v_type = VNON; 516 vgone(*vpp); 517 *vpp = 0; 518 return (0); 519 } 520 521 int 522 lfs_create(v) 523 void *v; 524 { 525 struct vop_create_args /* { 526 struct vnode *a_dvp; 527 struct vnode **a_vpp; 528 struct componentname *a_cnp; 529 struct vattr *a_vap; 530 } */ *ap = v; 531 int error; 532 533 if((error = SET_DIROP(ap->a_dvp)) != 0) { 534 vput(ap->a_dvp); 535 return error; 536 } 537 MARK_VNODE(ap->a_dvp); 538 error = ufs_create(ap); 539 UNMARK_VNODE(ap->a_dvp); 540 if (*(ap->a_vpp)) 541 UNMARK_VNODE(*(ap->a_vpp)); 542 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"create"); 543 return (error); 544 } 545 546 int 547 lfs_whiteout(v) 548 void *v; 549 { 550 struct vop_whiteout_args /* { 551 struct vnode *a_dvp; 552 struct componentname *a_cnp; 553 int a_flags; 554 } */ *ap = v; 555 int error; 556 557 if ((error = SET_DIROP(ap->a_dvp)) != 0) 558 /* XXX no unlock here? */ 559 return error; 560 MARK_VNODE(ap->a_dvp); 561 error = ufs_whiteout(ap); 562 UNMARK_VNODE(ap->a_dvp); 563 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"whiteout"); 564 return (error); 565 } 566 567 int 568 lfs_mkdir(v) 569 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(v) 594 void *v; 595 { 596 struct vop_remove_args /* { 597 struct vnode *a_dvp; 598 struct vnode *a_vp; 599 struct componentname *a_cnp; 600 } */ *ap = v; 601 struct vnode *dvp, *vp; 602 int error; 603 604 dvp = ap->a_dvp; 605 vp = ap->a_vp; 606 if ((error = SET_DIROP(dvp)) != 0) { 607 if (dvp == vp) 608 vrele(vp); 609 else 610 vput(vp); 611 vput(dvp); 612 return error; 613 } 614 MARK_VNODE(dvp); 615 MARK_VNODE(vp); 616 error = ufs_remove(ap); 617 UNMARK_VNODE(dvp); 618 UNMARK_VNODE(vp); 619 620 /* 621 * If ufs_remove failed, vp doesn't need to be VDIROP any more. 622 * If it succeeded, we can go ahead and wipe out vp, since 623 * its loss won't appear on disk until checkpoint, and by then 624 * dvp will have been written, completing the dirop. 625 */ 626 --lfs_dirvcount; 627 vp->v_flag &= ~VDIROP; 628 wakeup(&lfs_dirvcount); 629 vrele(vp); 630 631 SET_ENDOP(VTOI(dvp)->i_lfs,dvp,"remove"); 632 return (error); 633 } 634 635 int 636 lfs_rmdir(v) 637 void *v; 638 { 639 struct vop_rmdir_args /* { 640 struct vnodeop_desc *a_desc; 641 struct vnode *a_dvp; 642 struct vnode *a_vp; 643 struct componentname *a_cnp; 644 } */ *ap = v; 645 int error; 646 647 if ((error = SET_DIROP(ap->a_dvp)) != 0) { 648 vrele(ap->a_dvp); 649 if (ap->a_vp->v_mountedhere != NULL) 650 VOP_UNLOCK(ap->a_dvp, 0); 651 vput(ap->a_vp); 652 return error; 653 } 654 MARK_VNODE(ap->a_dvp); 655 MARK_VNODE(ap->a_vp); 656 error = ufs_rmdir(ap); 657 UNMARK_VNODE(ap->a_dvp); 658 UNMARK_VNODE(ap->a_vp); 659 660 /* 661 * If ufs_rmdir failed, vp doesn't need to be VDIROP any more. 662 * If it succeeded, we can go ahead and wipe out vp, since 663 * its loss won't appear on disk until checkpoint, and by then 664 * dvp will have been written, completing the dirop. 665 */ 666 --lfs_dirvcount; 667 ap->a_vp->v_flag &= ~VDIROP; 668 wakeup(&lfs_dirvcount); 669 vrele(ap->a_vp); 670 671 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"rmdir"); 672 return (error); 673 } 674 675 int 676 lfs_link(v) 677 void *v; 678 { 679 struct vop_link_args /* { 680 struct vnode *a_dvp; 681 struct vnode *a_vp; 682 struct componentname *a_cnp; 683 } */ *ap = v; 684 int error; 685 686 if ((error = SET_DIROP(ap->a_dvp)) != 0) { 687 vput(ap->a_dvp); 688 return error; 689 } 690 MARK_VNODE(ap->a_dvp); 691 error = ufs_link(ap); 692 UNMARK_VNODE(ap->a_dvp); 693 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"link"); 694 return (error); 695 } 696 697 int 698 lfs_rename(v) 699 void *v; 700 { 701 struct vop_rename_args /* { 702 struct vnode *a_fdvp; 703 struct vnode *a_fvp; 704 struct componentname *a_fcnp; 705 struct vnode *a_tdvp; 706 struct vnode *a_tvp; 707 struct componentname *a_tcnp; 708 } */ *ap = v; 709 struct vnode *tvp, *fvp, *tdvp, *fdvp; 710 int error; 711 struct lfs *fs; 712 713 fs = VTOI(ap->a_fdvp)->i_lfs; 714 tvp = ap->a_tvp; 715 tdvp = ap->a_tdvp; 716 fvp = ap->a_fvp; 717 fdvp = ap->a_fdvp; 718 719 /* 720 * Check for cross-device rename. 721 * If it is, we don't want to set dirops, just error out. 722 * (In particular note that MARK_VNODE(tdvp) will DTWT on 723 * a cross-device rename.) 724 * 725 * Copied from ufs_rename. 726 */ 727 if ((fvp->v_mount != tdvp->v_mount) || 728 (tvp && (fvp->v_mount != tvp->v_mount))) { 729 error = EXDEV; 730 goto errout; 731 } 732 if ((error = SET_DIROP(fdvp))!=0) 733 goto errout; 734 MARK_VNODE(fdvp); 735 MARK_VNODE(tdvp); 736 error = ufs_rename(ap); 737 UNMARK_VNODE(fdvp); 738 UNMARK_VNODE(tdvp); 739 SET_ENDOP(fs,fdvp,"rename"); 740 return (error); 741 742 errout: 743 VOP_ABORTOP(tdvp, ap->a_tcnp); /* XXX, why not in NFS? */ 744 if (tdvp == tvp) 745 vrele(tdvp); 746 else 747 vput(tdvp); 748 if (tvp) 749 vput(tvp); 750 VOP_ABORTOP(fdvp, ap->a_fcnp); /* XXX, why not in NFS? */ 751 vrele(fdvp); 752 vrele(fvp); 753 return (error); 754 } 755 756 /* XXX hack to avoid calling ITIMES in getattr */ 757 int 758 lfs_getattr(v) 759 void *v; 760 { 761 struct vop_getattr_args /* { 762 struct vnode *a_vp; 763 struct vattr *a_vap; 764 struct ucred *a_cred; 765 struct proc *a_p; 766 } */ *ap = v; 767 struct vnode *vp = ap->a_vp; 768 struct inode *ip = VTOI(vp); 769 struct vattr *vap = ap->a_vap; 770 /* 771 * Copy from inode table 772 */ 773 vap->va_fsid = ip->i_dev; 774 vap->va_fileid = ip->i_number; 775 vap->va_mode = ip->i_ffs_mode & ~IFMT; 776 vap->va_nlink = ip->i_ffs_nlink; 777 vap->va_uid = ip->i_ffs_uid; 778 vap->va_gid = ip->i_ffs_gid; 779 vap->va_rdev = (dev_t)ip->i_ffs_rdev; 780 vap->va_size = ip->i_ffs_size; 781 vap->va_atime.tv_sec = ip->i_ffs_atime; 782 vap->va_atime.tv_nsec = ip->i_ffs_atimensec; 783 vap->va_mtime.tv_sec = ip->i_ffs_mtime; 784 vap->va_mtime.tv_nsec = ip->i_ffs_mtimensec; 785 vap->va_ctime.tv_sec = ip->i_ffs_ctime; 786 vap->va_ctime.tv_nsec = ip->i_ffs_ctimensec; 787 vap->va_flags = ip->i_ffs_flags; 788 vap->va_gen = ip->i_ffs_gen; 789 /* this doesn't belong here */ 790 if (vp->v_type == VBLK) 791 vap->va_blocksize = BLKDEV_IOSIZE; 792 else if (vp->v_type == VCHR) 793 vap->va_blocksize = MAXBSIZE; 794 else 795 vap->va_blocksize = vp->v_mount->mnt_stat.f_iosize; 796 vap->va_bytes = dbtob((u_quad_t)ip->i_ffs_blocks); 797 vap->va_type = vp->v_type; 798 vap->va_filerev = ip->i_modrev; 799 return (0); 800 } 801 802 /* 803 * Close called 804 * 805 * XXX -- we were using ufs_close, but since it updates the 806 * times on the inode, we might need to bump the uinodes 807 * count. 808 */ 809 /* ARGSUSED */ 810 int 811 lfs_close(v) 812 void *v; 813 { 814 struct vop_close_args /* { 815 struct vnode *a_vp; 816 int a_fflag; 817 struct ucred *a_cred; 818 struct proc *a_p; 819 } */ *ap = v; 820 struct vnode *vp = ap->a_vp; 821 struct inode *ip = VTOI(vp); 822 struct timespec ts; 823 824 simple_lock(&vp->v_interlock); 825 if (vp->v_usecount > 1) { 826 TIMEVAL_TO_TIMESPEC(&time, &ts); 827 LFS_ITIMES(ip, &ts, &ts, &ts); 828 } 829 simple_unlock(&vp->v_interlock); 830 return (0); 831 } 832 833 /* 834 * Reclaim an inode so that it can be used for other purposes. 835 */ 836 int lfs_no_inactive = 0; 837 838 int 839 lfs_reclaim(v) 840 void *v; 841 { 842 struct vop_reclaim_args /* { 843 struct vnode *a_vp; 844 struct proc *a_p; 845 } */ *ap = v; 846 struct vnode *vp = ap->a_vp; 847 int error; 848 849 LFS_CLR_UINO(VTOI(vp), IN_ALLMOD); 850 if ((error = ufs_reclaim(vp, ap->a_p))) 851 return (error); 852 pool_put(&lfs_inode_pool, vp->v_data); 853 vp->v_data = NULL; 854 return (0); 855 } 856
Indexes created Sun Oct 19 02:09:48 GMT 2025