lfs_vnops.c revision 1.38.2.5
1 /* $NetBSD: lfs_vnops.c,v 1.38.2.5 2000/12/14 23:36:31 he 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 <vm/vm.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/quota.h> 96 #include <ufs/ufs/inode.h> 97 #include <ufs/ufs/dir.h> 98 #include <ufs/ufs/ufsmount.h> 99 #include <ufs/ufs/ufs_extern.h> 100 101 #include <ufs/lfs/lfs.h> 102 #include <ufs/lfs/lfs_extern.h> 103 104 /* Global vfs data structures for lfs. */ 105 int (**lfs_vnodeop_p) __P((void *)); 106 struct vnodeopv_entry_desc lfs_vnodeop_entries[] = { 107 { &vop_default_desc, vn_default_error }, 108 { &vop_lookup_desc, ufs_lookup }, /* lookup */ 109 { &vop_create_desc, lfs_create }, /* create */ 110 { &vop_whiteout_desc, lfs_whiteout }, /* whiteout */ 111 { &vop_mknod_desc, lfs_mknod }, /* mknod */ 112 { &vop_open_desc, ufs_open }, /* open */ 113 { &vop_close_desc, lfs_close }, /* close */ 114 { &vop_access_desc, ufs_access }, /* access */ 115 { &vop_getattr_desc, lfs_getattr }, /* getattr */ 116 { &vop_setattr_desc, ufs_setattr }, /* setattr */ 117 { &vop_read_desc, lfs_read }, /* read */ 118 { &vop_write_desc, lfs_write }, /* write */ 119 { &vop_lease_desc, ufs_lease_check }, /* lease */ 120 { &vop_ioctl_desc, ufs_ioctl }, /* ioctl */ 121 { &vop_fcntl_desc, ufs_fcntl }, /* fcntl */ 122 { &vop_poll_desc, ufs_poll }, /* poll */ 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 { (struct vnodeop_desc*)NULL, (int(*) __P((void *)))NULL } 154 }; 155 struct vnodeopv_desc lfs_vnodeop_opv_desc = 156 { &lfs_vnodeop_p, lfs_vnodeop_entries }; 157 158 int (**lfs_specop_p) __P((void *)); 159 struct vnodeopv_entry_desc lfs_specop_entries[] = { 160 { &vop_default_desc, vn_default_error }, 161 { &vop_lookup_desc, spec_lookup }, /* lookup */ 162 { &vop_create_desc, spec_create }, /* create */ 163 { &vop_mknod_desc, spec_mknod }, /* mknod */ 164 { &vop_open_desc, spec_open }, /* open */ 165 { &vop_close_desc, ufsspec_close }, /* close */ 166 { &vop_access_desc, ufs_access }, /* access */ 167 { &vop_getattr_desc, lfs_getattr }, /* getattr */ 168 { &vop_setattr_desc, ufs_setattr }, /* setattr */ 169 { &vop_read_desc, ufsspec_read }, /* read */ 170 { &vop_write_desc, ufsspec_write }, /* write */ 171 { &vop_lease_desc, spec_lease_check }, /* lease */ 172 { &vop_ioctl_desc, spec_ioctl }, /* ioctl */ 173 { &vop_fcntl_desc, ufs_fcntl }, /* fcntl */ 174 { &vop_poll_desc, spec_poll }, /* poll */ 175 { &vop_revoke_desc, spec_revoke }, /* revoke */ 176 { &vop_mmap_desc, spec_mmap }, /* mmap */ 177 { &vop_fsync_desc, spec_fsync }, /* fsync */ 178 { &vop_seek_desc, spec_seek }, /* seek */ 179 { &vop_remove_desc, spec_remove }, /* remove */ 180 { &vop_link_desc, spec_link }, /* link */ 181 { &vop_rename_desc, spec_rename }, /* rename */ 182 { &vop_mkdir_desc, spec_mkdir }, /* mkdir */ 183 { &vop_rmdir_desc, spec_rmdir }, /* rmdir */ 184 { &vop_symlink_desc, spec_symlink }, /* symlink */ 185 { &vop_readdir_desc, spec_readdir }, /* readdir */ 186 { &vop_readlink_desc, spec_readlink }, /* readlink */ 187 { &vop_abortop_desc, spec_abortop }, /* abortop */ 188 { &vop_inactive_desc, lfs_inactive }, /* inactive */ 189 { &vop_reclaim_desc, lfs_reclaim }, /* reclaim */ 190 { &vop_lock_desc, ufs_lock }, /* lock */ 191 { &vop_unlock_desc, ufs_unlock }, /* unlock */ 192 { &vop_bmap_desc, spec_bmap }, /* bmap */ 193 { &vop_strategy_desc, spec_strategy }, /* strategy */ 194 { &vop_print_desc, ufs_print }, /* print */ 195 { &vop_islocked_desc, ufs_islocked }, /* islocked */ 196 { &vop_pathconf_desc, spec_pathconf }, /* pathconf */ 197 { &vop_advlock_desc, spec_advlock }, /* advlock */ 198 { &vop_blkatoff_desc, spec_blkatoff }, /* blkatoff */ 199 { &vop_valloc_desc, spec_valloc }, /* valloc */ 200 { &vop_vfree_desc, lfs_vfree }, /* vfree */ 201 { &vop_truncate_desc, spec_truncate }, /* truncate */ 202 { &vop_update_desc, lfs_update }, /* update */ 203 { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ 204 { (struct vnodeop_desc*)NULL, (int(*) __P((void *)))NULL } 205 }; 206 struct vnodeopv_desc lfs_specop_opv_desc = 207 { &lfs_specop_p, lfs_specop_entries }; 208 209 int (**lfs_fifoop_p) __P((void *)); 210 struct vnodeopv_entry_desc lfs_fifoop_entries[] = { 211 { &vop_default_desc, vn_default_error }, 212 { &vop_lookup_desc, fifo_lookup }, /* lookup */ 213 { &vop_create_desc, fifo_create }, /* create */ 214 { &vop_mknod_desc, fifo_mknod }, /* mknod */ 215 { &vop_open_desc, fifo_open }, /* open */ 216 { &vop_close_desc, ufsfifo_close }, /* close */ 217 { &vop_access_desc, ufs_access }, /* access */ 218 { &vop_getattr_desc, lfs_getattr }, /* getattr */ 219 { &vop_setattr_desc, ufs_setattr }, /* setattr */ 220 { &vop_read_desc, ufsfifo_read }, /* read */ 221 { &vop_write_desc, ufsfifo_write }, /* write */ 222 { &vop_lease_desc, fifo_lease_check }, /* lease */ 223 { &vop_ioctl_desc, fifo_ioctl }, /* ioctl */ 224 { &vop_fcntl_desc, ufs_fcntl }, /* fcntl */ 225 { &vop_poll_desc, fifo_poll }, /* poll */ 226 { &vop_revoke_desc, fifo_revoke }, /* revoke */ 227 { &vop_mmap_desc, fifo_mmap }, /* mmap */ 228 { &vop_fsync_desc, fifo_fsync }, /* fsync */ 229 { &vop_seek_desc, fifo_seek }, /* seek */ 230 { &vop_remove_desc, fifo_remove }, /* remove */ 231 { &vop_link_desc, fifo_link }, /* link */ 232 { &vop_rename_desc, fifo_rename }, /* rename */ 233 { &vop_mkdir_desc, fifo_mkdir }, /* mkdir */ 234 { &vop_rmdir_desc, fifo_rmdir }, /* rmdir */ 235 { &vop_symlink_desc, fifo_symlink }, /* symlink */ 236 { &vop_readdir_desc, fifo_readdir }, /* readdir */ 237 { &vop_readlink_desc, fifo_readlink }, /* readlink */ 238 { &vop_abortop_desc, fifo_abortop }, /* abortop */ 239 { &vop_inactive_desc, lfs_inactive }, /* inactive */ 240 { &vop_reclaim_desc, lfs_reclaim }, /* reclaim */ 241 { &vop_lock_desc, ufs_lock }, /* lock */ 242 { &vop_unlock_desc, ufs_unlock }, /* unlock */ 243 { &vop_bmap_desc, fifo_bmap }, /* bmap */ 244 { &vop_strategy_desc, fifo_strategy }, /* strategy */ 245 { &vop_print_desc, ufs_print }, /* print */ 246 { &vop_islocked_desc, ufs_islocked }, /* islocked */ 247 { &vop_pathconf_desc, fifo_pathconf }, /* pathconf */ 248 { &vop_advlock_desc, fifo_advlock }, /* advlock */ 249 { &vop_blkatoff_desc, fifo_blkatoff }, /* blkatoff */ 250 { &vop_valloc_desc, fifo_valloc }, /* valloc */ 251 { &vop_vfree_desc, lfs_vfree }, /* vfree */ 252 { &vop_truncate_desc, fifo_truncate }, /* truncate */ 253 { &vop_update_desc, lfs_update }, /* update */ 254 { &vop_bwrite_desc, lfs_bwrite }, /* bwrite */ 255 { (struct vnodeop_desc*)NULL, (int(*) __P((void *)))NULL } 256 }; 257 struct vnodeopv_desc lfs_fifoop_opv_desc = 258 { &lfs_fifoop_p, lfs_fifoop_entries }; 259 260 /* 261 * A function version of LFS_ITIMES, for the UFS functions which call ITIMES 262 */ 263 void 264 lfs_itimes(ip, acc, mod, cre) 265 struct inode *ip; 266 struct timespec *acc, *mod, *cre; 267 { 268 LFS_ITIMES(ip, acc, mod, cre); 269 } 270 271 #define LFS_READWRITE 272 #include <ufs/ufs/ufs_readwrite.c> 273 #undef LFS_READWRITE 274 275 /* 276 * Synch an open file. 277 */ 278 /* ARGSUSED */ 279 int 280 lfs_fsync(v) 281 void *v; 282 { 283 struct vop_fsync_args /* { 284 struct vnode *a_vp; 285 struct ucred *a_cred; 286 int a_flags; 287 off_t offlo; 288 off_t offhi; 289 struct proc *a_p; 290 } */ *ap = v; 291 292 return (VOP_UPDATE(ap->a_vp, NULL, NULL, 293 (ap->a_flags & FSYNC_WAIT) != 0 ? UPDATE_WAIT : 0)); 294 } 295 296 /* 297 * Take IN_ADIROP off, then call ufs_inactive. 298 */ 299 int 300 lfs_inactive(v) 301 void *v; 302 { 303 struct vop_inactive_args /* { 304 struct vnode *a_vp; 305 struct proc *a_p; 306 } */ *ap = v; 307 struct inode *ip = VTOI(ap->a_vp); 308 309 if (ip->i_flag & IN_ADIROP) 310 --ip->i_lfs->lfs_nadirop; 311 ip->i_flag &= ~IN_ADIROP; 312 return ufs_inactive(v); 313 } 314 315 /* 316 * These macros are used to bracket UFS directory ops, so that we can 317 * identify all the pages touched during directory ops which need to 318 * be ordered and flushed atomically, so that they may be recovered. 319 */ 320 /* 321 * XXX KS - Because we have to mark nodes VDIROP in order to prevent 322 * the cache from reclaiming them while a dirop is in progress, we must 323 * also manage the number of nodes so marked (otherwise we can run out). 324 * We do this by setting lfs_dirvcount to the number of marked vnodes; it 325 * is decremented during segment write, when VDIROP is taken off. 326 */ 327 #define SET_DIROP(vp) lfs_set_dirop(vp) 328 static int lfs_set_dirop __P((struct vnode *)); 329 extern int lfs_dirvcount; 330 331 static int 332 lfs_set_dirop(vp) 333 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, fsbtodb(fs, NIADDR + 3))) != 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, -fsbtodb(fs, NIADDR + 3)); 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, -fsbtodb(fs, NIADDR + 3)); /* 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(vp) 408 struct vnode *vp; 409 { 410 struct inode *ip; 411 412 ip = VTOI(vp); 413 414 if (ip->i_flag & IN_ADIROP) 415 --ip->i_lfs->lfs_nadirop; 416 ip->i_flag &= ~IN_ADIROP; 417 } 418 419 int 420 lfs_symlink(v) 421 void *v; 422 { 423 struct vop_symlink_args /* { 424 struct vnode *a_dvp; 425 struct vnode **a_vpp; 426 struct componentname *a_cnp; 427 struct vattr *a_vap; 428 char *a_target; 429 } */ *ap = v; 430 int error; 431 432 if ((error = SET_DIROP(ap->a_dvp)) != 0) { 433 vput(ap->a_dvp); 434 return error; 435 } 436 MARK_VNODE(ap->a_dvp); 437 error = ufs_symlink(ap); 438 UNMARK_VNODE(ap->a_dvp); 439 if (*(ap->a_vpp)) 440 UNMARK_VNODE(*(ap->a_vpp)); 441 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"symlink"); 442 return (error); 443 } 444 445 int 446 lfs_mknod(v) 447 void *v; 448 { 449 struct vop_mknod_args /* { 450 struct vnode *a_dvp; 451 struct vnode **a_vpp; 452 struct componentname *a_cnp; 453 struct vattr *a_vap; 454 } */ *ap = v; 455 struct vattr *vap = ap->a_vap; 456 struct vnode **vpp = ap->a_vpp; 457 struct inode *ip; 458 int error; 459 460 if ((error = SET_DIROP(ap->a_dvp)) != 0) { 461 vput(ap->a_dvp); 462 return error; 463 } 464 MARK_VNODE(ap->a_dvp); 465 error = ufs_makeinode(MAKEIMODE(vap->va_type, vap->va_mode), 466 ap->a_dvp, vpp, ap->a_cnp); 467 UNMARK_VNODE(ap->a_dvp); 468 if (*(ap->a_vpp)) 469 UNMARK_VNODE(*(ap->a_vpp)); 470 471 /* Either way we're done with the dirop at this point */ 472 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"mknod"); 473 474 if (error) 475 return (error); 476 477 ip = VTOI(*vpp); 478 ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE; 479 if (vap->va_rdev != VNOVAL) { 480 /* 481 * Want to be able to use this to make badblock 482 * inodes, so don't truncate the dev number. 483 */ 484 #if 0 485 ip->i_ffs_rdev = ufs_rw32(vap->va_rdev, 486 UFS_MPNEEDSWAP((*vpp)->v_mount)); 487 #else 488 ip->i_ffs_rdev = vap->va_rdev; 489 #endif 490 } 491 /* 492 * Call fsync to write the vnode so that we don't have to deal with 493 * flushing it when it's marked VDIROP|VXLOCK. 494 * 495 * XXX KS - If we can't flush we also can't call vgone(), so must 496 * return. But, that leaves this vnode in limbo, also not good. 497 * Can this ever happen (barring hardware failure)? 498 */ 499 if ((error = VOP_FSYNC(*vpp, NOCRED, FSYNC_WAIT, 0, 0, curproc)) != 0) { 500 printf("Couldn't fsync in mknod (ino %d)---what do I do?\n", 501 VTOI(*vpp)->i_number); 502 return (error); 503 } 504 /* 505 * Remove vnode so that it will be reloaded by VFS_VGET and 506 * checked to see if it is an alias of an existing entry in 507 * the inode cache. 508 */ 509 /* Used to be vput, but that causes us to call VOP_INACTIVE twice. */ 510 VOP_UNLOCK(*vpp, 0); 511 lfs_vunref(*vpp); 512 (*vpp)->v_type = VNON; 513 vgone(*vpp); 514 *vpp = 0; 515 return (0); 516 } 517 518 int 519 lfs_create(v) 520 void *v; 521 { 522 struct vop_create_args /* { 523 struct vnode *a_dvp; 524 struct vnode **a_vpp; 525 struct componentname *a_cnp; 526 struct vattr *a_vap; 527 } */ *ap = v; 528 int error; 529 530 if((error = SET_DIROP(ap->a_dvp)) != 0) { 531 vput(ap->a_dvp); 532 return error; 533 } 534 MARK_VNODE(ap->a_dvp); 535 error = ufs_create(ap); 536 UNMARK_VNODE(ap->a_dvp); 537 if (*(ap->a_vpp)) 538 UNMARK_VNODE(*(ap->a_vpp)); 539 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"create"); 540 return (error); 541 } 542 543 int 544 lfs_whiteout(v) 545 void *v; 546 { 547 struct vop_whiteout_args /* { 548 struct vnode *a_dvp; 549 struct componentname *a_cnp; 550 int a_flags; 551 } */ *ap = v; 552 int error; 553 554 if ((error = SET_DIROP(ap->a_dvp)) != 0) 555 /* XXX no unlock here? */ 556 return error; 557 MARK_VNODE(ap->a_dvp); 558 error = ufs_whiteout(ap); 559 UNMARK_VNODE(ap->a_dvp); 560 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"whiteout"); 561 return (error); 562 } 563 564 int 565 lfs_mkdir(v) 566 void *v; 567 { 568 struct vop_mkdir_args /* { 569 struct vnode *a_dvp; 570 struct vnode **a_vpp; 571 struct componentname *a_cnp; 572 struct vattr *a_vap; 573 } */ *ap = v; 574 int error; 575 576 if((error = SET_DIROP(ap->a_dvp)) != 0) { 577 vput(ap->a_dvp); 578 return error; 579 } 580 MARK_VNODE(ap->a_dvp); 581 error = ufs_mkdir(ap); 582 UNMARK_VNODE(ap->a_dvp); 583 if (*(ap->a_vpp)) 584 UNMARK_VNODE(*(ap->a_vpp)); 585 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"mkdir"); 586 return (error); 587 } 588 589 int 590 lfs_remove(v) 591 void *v; 592 { 593 struct vop_remove_args /* { 594 struct vnode *a_dvp; 595 struct vnode *a_vp; 596 struct componentname *a_cnp; 597 } */ *ap = v; 598 struct vnode *dvp, *vp; 599 int error; 600 601 dvp = ap->a_dvp; 602 vp = ap->a_vp; 603 if ((error = SET_DIROP(dvp)) != 0) { 604 if (dvp == vp) 605 vrele(vp); 606 else 607 vput(vp); 608 vput(dvp); 609 return error; 610 } 611 MARK_VNODE(dvp); 612 MARK_VNODE(vp); 613 error = ufs_remove(ap); 614 UNMARK_VNODE(dvp); 615 UNMARK_VNODE(vp); 616 617 /* 618 * If ufs_remove failed, vp doesn't need to be VDIROP any more. 619 * If it succeeded, we can go ahead and wipe out vp, since 620 * its loss won't appear on disk until checkpoint, and by then 621 * dvp will have been written, completing the dirop. 622 */ 623 --lfs_dirvcount; 624 vp->v_flag &= ~VDIROP; 625 wakeup(&lfs_dirvcount); 626 vrele(vp); 627 628 SET_ENDOP(VTOI(dvp)->i_lfs,dvp,"remove"); 629 return (error); 630 } 631 632 int 633 lfs_rmdir(v) 634 void *v; 635 { 636 struct vop_rmdir_args /* { 637 struct vnodeop_desc *a_desc; 638 struct vnode *a_dvp; 639 struct vnode *a_vp; 640 struct componentname *a_cnp; 641 } */ *ap = v; 642 int error; 643 644 if ((error = SET_DIROP(ap->a_dvp)) != 0) { 645 vrele(ap->a_dvp); 646 if (ap->a_vp->v_mountedhere != NULL) 647 VOP_UNLOCK(ap->a_dvp, 0); 648 vput(ap->a_vp); 649 return error; 650 } 651 MARK_VNODE(ap->a_dvp); 652 MARK_VNODE(ap->a_vp); 653 error = ufs_rmdir(ap); 654 UNMARK_VNODE(ap->a_dvp); 655 UNMARK_VNODE(ap->a_vp); 656 657 /* 658 * If ufs_rmdir failed, vp doesn't need to be VDIROP any more. 659 * If it succeeded, we can go ahead and wipe out vp, since 660 * its loss won't appear on disk until checkpoint, and by then 661 * dvp will have been written, completing the dirop. 662 */ 663 --lfs_dirvcount; 664 ap->a_vp->v_flag &= ~VDIROP; 665 wakeup(&lfs_dirvcount); 666 vrele(ap->a_vp); 667 668 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"rmdir"); 669 return (error); 670 } 671 672 int 673 lfs_link(v) 674 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(v) 696 void *v; 697 { 698 struct vop_rename_args /* { 699 struct vnode *a_fdvp; 700 struct vnode *a_fvp; 701 struct componentname *a_fcnp; 702 struct vnode *a_tdvp; 703 struct vnode *a_tvp; 704 struct componentname *a_tcnp; 705 } */ *ap = v; 706 struct vnode *tvp, *fvp, *tdvp, *fdvp; 707 int error; 708 struct lfs *fs; 709 710 fs = VTOI(ap->a_fdvp)->i_lfs; 711 tvp = ap->a_tvp; 712 tdvp = ap->a_tdvp; 713 fvp = ap->a_fvp; 714 fdvp = ap->a_fdvp; 715 716 /* 717 * Check for cross-device rename. 718 * If it is, we don't want to set dirops, just error out. 719 * (In particular note that MARK_VNODE(tdvp) will DTWT on 720 * a cross-device rename.) 721 * 722 * Copied from ufs_rename. 723 */ 724 if ((fvp->v_mount != tdvp->v_mount) || 725 (tvp && (fvp->v_mount != tvp->v_mount))) { 726 error = EXDEV; 727 goto errout; 728 } 729 if ((error = SET_DIROP(fdvp))!=0) 730 goto errout; 731 MARK_VNODE(fdvp); 732 MARK_VNODE(tdvp); 733 error = ufs_rename(ap); 734 UNMARK_VNODE(fdvp); 735 UNMARK_VNODE(tdvp); 736 SET_ENDOP(fs,fdvp,"rename"); 737 return (error); 738 739 errout: 740 VOP_ABORTOP(tdvp, ap->a_tcnp); /* XXX, why not in NFS? */ 741 if (tdvp == tvp) 742 vrele(tdvp); 743 else 744 vput(tdvp); 745 if (tvp) 746 vput(tvp); 747 VOP_ABORTOP(fdvp, ap->a_fcnp); /* XXX, why not in NFS? */ 748 vrele(fdvp); 749 vrele(fvp); 750 return (error); 751 } 752 753 /* XXX hack to avoid calling ITIMES in getattr */ 754 int 755 lfs_getattr(v) 756 void *v; 757 { 758 struct vop_getattr_args /* { 759 struct vnode *a_vp; 760 struct vattr *a_vap; 761 struct ucred *a_cred; 762 struct proc *a_p; 763 } */ *ap = v; 764 struct vnode *vp = ap->a_vp; 765 struct inode *ip = VTOI(vp); 766 struct vattr *vap = ap->a_vap; 767 /* 768 * Copy from inode table 769 */ 770 vap->va_fsid = ip->i_dev; 771 vap->va_fileid = ip->i_number; 772 vap->va_mode = ip->i_ffs_mode & ~IFMT; 773 vap->va_nlink = ip->i_ffs_nlink; 774 vap->va_uid = ip->i_ffs_uid; 775 vap->va_gid = ip->i_ffs_gid; 776 vap->va_rdev = (dev_t)ip->i_ffs_rdev; 777 vap->va_size = ip->i_ffs_size; 778 vap->va_atime.tv_sec = ip->i_ffs_atime; 779 vap->va_atime.tv_nsec = ip->i_ffs_atimensec; 780 vap->va_mtime.tv_sec = ip->i_ffs_mtime; 781 vap->va_mtime.tv_nsec = ip->i_ffs_mtimensec; 782 vap->va_ctime.tv_sec = ip->i_ffs_ctime; 783 vap->va_ctime.tv_nsec = ip->i_ffs_ctimensec; 784 vap->va_flags = ip->i_ffs_flags; 785 vap->va_gen = ip->i_ffs_gen; 786 /* this doesn't belong here */ 787 if (vp->v_type == VBLK) 788 vap->va_blocksize = BLKDEV_IOSIZE; 789 else if (vp->v_type == VCHR) 790 vap->va_blocksize = MAXBSIZE; 791 else 792 vap->va_blocksize = vp->v_mount->mnt_stat.f_iosize; 793 vap->va_bytes = dbtob((u_quad_t)ip->i_ffs_blocks); 794 vap->va_type = vp->v_type; 795 vap->va_filerev = ip->i_modrev; 796 return (0); 797 } 798 799 /* 800 * Close called 801 * 802 * XXX -- we were using ufs_close, but since it updates the 803 * times on the inode, we might need to bump the uinodes 804 * count. 805 */ 806 /* ARGSUSED */ 807 int 808 lfs_close(v) 809 void *v; 810 { 811 struct vop_close_args /* { 812 struct vnode *a_vp; 813 int a_fflag; 814 struct ucred *a_cred; 815 struct proc *a_p; 816 } */ *ap = v; 817 struct vnode *vp = ap->a_vp; 818 struct inode *ip = VTOI(vp); 819 struct timespec ts; 820 821 simple_lock(&vp->v_interlock); 822 if (vp->v_usecount > 1) { 823 TIMEVAL_TO_TIMESPEC(&time, &ts); 824 LFS_ITIMES(ip, &ts, &ts, &ts); 825 } 826 simple_unlock(&vp->v_interlock); 827 return (0); 828 } 829 830 /* 831 * Reclaim an inode so that it can be used for other purposes. 832 */ 833 int lfs_no_inactive = 0; 834 835 int 836 lfs_reclaim(v) 837 void *v; 838 { 839 struct vop_reclaim_args /* { 840 struct vnode *a_vp; 841 struct proc *a_p; 842 } */ *ap = v; 843 struct vnode *vp = ap->a_vp; 844 int error; 845 846 LFS_CLR_UINO(VTOI(vp), IN_ALLMOD); 847 if ((error = ufs_reclaim(vp, ap->a_p))) 848 return (error); 849 pool_put(&lfs_inode_pool, vp->v_data); 850 vp->v_data = NULL; 851 return (0); 852 } 853
Indexes created Sun Oct 19 19:09:49 GMT 2025