lfs_vnops.c revision 1.38.2.6
1 /* $NetBSD: lfs_vnops.c,v 1.38.2.6 2001/02/03 21:58:42 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 /* Ignore the trickle syncer */ 293 if (ap->a_flags & FSYNC_LAZY) 294 return 0; 295 296 return (VOP_UPDATE(ap->a_vp, NULL, NULL, 297 (ap->a_flags & FSYNC_WAIT) != 0 ? UPDATE_WAIT : 0)); 298 } 299 300 /* 301 * Take IN_ADIROP off, then call ufs_inactive. 302 */ 303 int 304 lfs_inactive(v) 305 void *v; 306 { 307 struct vop_inactive_args /* { 308 struct vnode *a_vp; 309 struct proc *a_p; 310 } */ *ap = v; 311 struct inode *ip = VTOI(ap->a_vp); 312 313 if (ip->i_flag & IN_ADIROP) 314 --ip->i_lfs->lfs_nadirop; 315 ip->i_flag &= ~IN_ADIROP; 316 return ufs_inactive(v); 317 } 318 319 /* 320 * These macros are used to bracket UFS directory ops, so that we can 321 * identify all the pages touched during directory ops which need to 322 * be ordered and flushed atomically, so that they may be recovered. 323 */ 324 /* 325 * XXX KS - Because we have to mark nodes VDIROP in order to prevent 326 * the cache from reclaiming them while a dirop is in progress, we must 327 * also manage the number of nodes so marked (otherwise we can run out). 328 * We do this by setting lfs_dirvcount to the number of marked vnodes; it 329 * is decremented during segment write, when VDIROP is taken off. 330 */ 331 #define SET_DIROP(vp) lfs_set_dirop(vp) 332 static int lfs_set_dirop __P((struct vnode *)); 333 extern int lfs_dirvcount; 334 335 static int 336 lfs_set_dirop(vp) 337 struct vnode *vp; 338 { 339 struct lfs *fs; 340 int error; 341 342 fs = VTOI(vp)->i_lfs; 343 /* 344 * We might need one directory block plus supporting indirect blocks, 345 * plus an inode block and ifile page for the new vnode. 346 */ 347 if ((error = lfs_reserve(fs, vp, fsbtodb(fs, NIADDR + 3))) != 0) 348 return (error); 349 if (fs->lfs_dirops == 0) 350 lfs_check(vp, LFS_UNUSED_LBN, 0); 351 while (fs->lfs_writer || lfs_dirvcount > LFS_MAXDIROP) { 352 if(fs->lfs_writer) 353 tsleep(&fs->lfs_dirops, PRIBIO + 1, "lfs_dirop", 0); 354 if(lfs_dirvcount > LFS_MAXDIROP && fs->lfs_dirops==0) { 355 ++fs->lfs_writer; 356 lfs_flush(fs, 0); 357 if(--fs->lfs_writer==0) 358 wakeup(&fs->lfs_dirops); 359 } 360 361 if(lfs_dirvcount > LFS_MAXDIROP) { 362 #ifdef DEBUG_LFS 363 printf("lfs_set_dirop: sleeping with dirops=%d, " 364 "dirvcount=%d\n", fs->lfs_dirops, 365 lfs_dirvcount); 366 #endif 367 if((error = tsleep(&lfs_dirvcount, PCATCH|PUSER, 368 "lfs_maxdirop", 0)) !=0) { 369 lfs_reserve(fs, vp, -fsbtodb(fs, NIADDR + 3)); 370 return error; 371 } 372 } 373 } 374 ++fs->lfs_dirops; 375 fs->lfs_doifile = 1; 376 377 /* Hold a reference so SET_ENDOP will be happy */ 378 lfs_vref(vp); 379 380 return 0; 381 } 382 383 #define SET_ENDOP(fs,vp,str) { \ 384 --(fs)->lfs_dirops; \ 385 if (!(fs)->lfs_dirops) { \ 386 if ((fs)->lfs_nadirop) { \ 387 panic("SET_ENDOP: %s: no dirops but nadirop=%d\n", \ 388 (str), (fs)->lfs_nadirop); \ 389 } \ 390 wakeup(&(fs)->lfs_writer); \ 391 lfs_check((vp),LFS_UNUSED_LBN,0); \ 392 } \ 393 lfs_reserve(fs, vp, -fsbtodb(fs, NIADDR + 3)); /* XXX */ \ 394 lfs_vunref(vp); \ 395 } 396 397 #define MARK_VNODE(dvp) do { \ 398 if (!((dvp)->v_flag & VDIROP)) { \ 399 (void)lfs_vref(dvp); \ 400 ++lfs_dirvcount; \ 401 } \ 402 (dvp)->v_flag |= VDIROP; \ 403 if (!(VTOI(dvp)->i_flag & IN_ADIROP)) { \ 404 ++VTOI(dvp)->i_lfs->lfs_nadirop; \ 405 } \ 406 VTOI(dvp)->i_flag |= IN_ADIROP; \ 407 } while(0) 408 409 #define UNMARK_VNODE(vp) lfs_unmark_vnode(vp) 410 411 void lfs_unmark_vnode(vp) 412 struct vnode *vp; 413 { 414 struct inode *ip; 415 416 ip = VTOI(vp); 417 418 if (ip->i_flag & IN_ADIROP) 419 --ip->i_lfs->lfs_nadirop; 420 ip->i_flag &= ~IN_ADIROP; 421 } 422 423 int 424 lfs_symlink(v) 425 void *v; 426 { 427 struct vop_symlink_args /* { 428 struct vnode *a_dvp; 429 struct vnode **a_vpp; 430 struct componentname *a_cnp; 431 struct vattr *a_vap; 432 char *a_target; 433 } */ *ap = v; 434 int error; 435 436 if ((error = SET_DIROP(ap->a_dvp)) != 0) { 437 vput(ap->a_dvp); 438 return error; 439 } 440 MARK_VNODE(ap->a_dvp); 441 error = ufs_symlink(ap); 442 UNMARK_VNODE(ap->a_dvp); 443 if (*(ap->a_vpp)) 444 UNMARK_VNODE(*(ap->a_vpp)); 445 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"symlink"); 446 return (error); 447 } 448 449 int 450 lfs_mknod(v) 451 void *v; 452 { 453 struct vop_mknod_args /* { 454 struct vnode *a_dvp; 455 struct vnode **a_vpp; 456 struct componentname *a_cnp; 457 struct vattr *a_vap; 458 } */ *ap = v; 459 struct vattr *vap = ap->a_vap; 460 struct vnode **vpp = ap->a_vpp; 461 struct inode *ip; 462 int error; 463 464 if ((error = SET_DIROP(ap->a_dvp)) != 0) { 465 vput(ap->a_dvp); 466 return error; 467 } 468 MARK_VNODE(ap->a_dvp); 469 error = ufs_makeinode(MAKEIMODE(vap->va_type, vap->va_mode), 470 ap->a_dvp, vpp, ap->a_cnp); 471 UNMARK_VNODE(ap->a_dvp); 472 if (*(ap->a_vpp)) 473 UNMARK_VNODE(*(ap->a_vpp)); 474 475 /* Either way we're done with the dirop at this point */ 476 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"mknod"); 477 478 if (error) 479 return (error); 480 481 ip = VTOI(*vpp); 482 ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE; 483 if (vap->va_rdev != VNOVAL) { 484 /* 485 * Want to be able to use this to make badblock 486 * inodes, so don't truncate the dev number. 487 */ 488 #if 0 489 ip->i_ffs_rdev = ufs_rw32(vap->va_rdev, 490 UFS_MPNEEDSWAP((*vpp)->v_mount)); 491 #else 492 ip->i_ffs_rdev = vap->va_rdev; 493 #endif 494 } 495 /* 496 * Call fsync to write the vnode so that we don't have to deal with 497 * flushing it when it's marked VDIROP|VXLOCK. 498 * 499 * XXX KS - If we can't flush we also can't call vgone(), so must 500 * return. But, that leaves this vnode in limbo, also not good. 501 * Can this ever happen (barring hardware failure)? 502 */ 503 if ((error = VOP_FSYNC(*vpp, NOCRED, FSYNC_WAIT, 0, 0, curproc)) != 0) { 504 printf("Couldn't fsync in mknod (ino %d)---what do I do?\n", 505 VTOI(*vpp)->i_number); 506 return (error); 507 } 508 /* 509 * Remove vnode so that it will be reloaded by VFS_VGET and 510 * checked to see if it is an alias of an existing entry in 511 * the inode cache. 512 */ 513 /* Used to be vput, but that causes us to call VOP_INACTIVE twice. */ 514 VOP_UNLOCK(*vpp, 0); 515 lfs_vunref(*vpp); 516 (*vpp)->v_type = VNON; 517 vgone(*vpp); 518 *vpp = 0; 519 return (0); 520 } 521 522 int 523 lfs_create(v) 524 void *v; 525 { 526 struct vop_create_args /* { 527 struct vnode *a_dvp; 528 struct vnode **a_vpp; 529 struct componentname *a_cnp; 530 struct vattr *a_vap; 531 } */ *ap = v; 532 int error; 533 534 if((error = SET_DIROP(ap->a_dvp)) != 0) { 535 vput(ap->a_dvp); 536 return error; 537 } 538 MARK_VNODE(ap->a_dvp); 539 error = ufs_create(ap); 540 UNMARK_VNODE(ap->a_dvp); 541 if (*(ap->a_vpp)) 542 UNMARK_VNODE(*(ap->a_vpp)); 543 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"create"); 544 return (error); 545 } 546 547 int 548 lfs_whiteout(v) 549 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(v) 570 void *v; 571 { 572 struct vop_mkdir_args /* { 573 struct vnode *a_dvp; 574 struct vnode **a_vpp; 575 struct componentname *a_cnp; 576 struct vattr *a_vap; 577 } */ *ap = v; 578 int error; 579 580 if((error = SET_DIROP(ap->a_dvp)) != 0) { 581 vput(ap->a_dvp); 582 return error; 583 } 584 MARK_VNODE(ap->a_dvp); 585 error = ufs_mkdir(ap); 586 UNMARK_VNODE(ap->a_dvp); 587 if (*(ap->a_vpp)) 588 UNMARK_VNODE(*(ap->a_vpp)); 589 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"mkdir"); 590 return (error); 591 } 592 593 int 594 lfs_remove(v) 595 void *v; 596 { 597 struct vop_remove_args /* { 598 struct vnode *a_dvp; 599 struct vnode *a_vp; 600 struct componentname *a_cnp; 601 } */ *ap = v; 602 struct vnode *dvp, *vp; 603 int error; 604 605 dvp = ap->a_dvp; 606 vp = ap->a_vp; 607 if ((error = SET_DIROP(dvp)) != 0) { 608 if (dvp == vp) 609 vrele(vp); 610 else 611 vput(vp); 612 vput(dvp); 613 return error; 614 } 615 MARK_VNODE(dvp); 616 MARK_VNODE(vp); 617 error = ufs_remove(ap); 618 UNMARK_VNODE(dvp); 619 UNMARK_VNODE(vp); 620 621 /* 622 * If ufs_remove failed, vp doesn't need to be VDIROP any more. 623 * If it succeeded, we can go ahead and wipe out vp, since 624 * its loss won't appear on disk until checkpoint, and by then 625 * dvp will have been written, completing the dirop. 626 */ 627 --lfs_dirvcount; 628 vp->v_flag &= ~VDIROP; 629 wakeup(&lfs_dirvcount); 630 vrele(vp); 631 632 SET_ENDOP(VTOI(dvp)->i_lfs,dvp,"remove"); 633 return (error); 634 } 635 636 int 637 lfs_rmdir(v) 638 void *v; 639 { 640 struct vop_rmdir_args /* { 641 struct vnodeop_desc *a_desc; 642 struct vnode *a_dvp; 643 struct vnode *a_vp; 644 struct componentname *a_cnp; 645 } */ *ap = v; 646 int error; 647 648 if ((error = SET_DIROP(ap->a_dvp)) != 0) { 649 vrele(ap->a_dvp); 650 if (ap->a_vp->v_mountedhere != NULL) 651 VOP_UNLOCK(ap->a_dvp, 0); 652 vput(ap->a_vp); 653 return error; 654 } 655 MARK_VNODE(ap->a_dvp); 656 MARK_VNODE(ap->a_vp); 657 error = ufs_rmdir(ap); 658 UNMARK_VNODE(ap->a_dvp); 659 UNMARK_VNODE(ap->a_vp); 660 661 /* 662 * If ufs_rmdir failed, vp doesn't need to be VDIROP any more. 663 * If it succeeded, we can go ahead and wipe out vp, since 664 * its loss won't appear on disk until checkpoint, and by then 665 * dvp will have been written, completing the dirop. 666 */ 667 --lfs_dirvcount; 668 ap->a_vp->v_flag &= ~VDIROP; 669 wakeup(&lfs_dirvcount); 670 vrele(ap->a_vp); 671 672 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"rmdir"); 673 return (error); 674 } 675 676 int 677 lfs_link(v) 678 void *v; 679 { 680 struct vop_link_args /* { 681 struct vnode *a_dvp; 682 struct vnode *a_vp; 683 struct componentname *a_cnp; 684 } */ *ap = v; 685 int error; 686 687 if ((error = SET_DIROP(ap->a_dvp)) != 0) { 688 vput(ap->a_dvp); 689 return error; 690 } 691 MARK_VNODE(ap->a_dvp); 692 error = ufs_link(ap); 693 UNMARK_VNODE(ap->a_dvp); 694 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"link"); 695 return (error); 696 } 697 698 int 699 lfs_rename(v) 700 void *v; 701 { 702 struct vop_rename_args /* { 703 struct vnode *a_fdvp; 704 struct vnode *a_fvp; 705 struct componentname *a_fcnp; 706 struct vnode *a_tdvp; 707 struct vnode *a_tvp; 708 struct componentname *a_tcnp; 709 } */ *ap = v; 710 struct vnode *tvp, *fvp, *tdvp, *fdvp; 711 int error; 712 struct lfs *fs; 713 714 fs = VTOI(ap->a_fdvp)->i_lfs; 715 tvp = ap->a_tvp; 716 tdvp = ap->a_tdvp; 717 fvp = ap->a_fvp; 718 fdvp = ap->a_fdvp; 719 720 /* 721 * Check for cross-device rename. 722 * If it is, we don't want to set dirops, just error out. 723 * (In particular note that MARK_VNODE(tdvp) will DTWT on 724 * a cross-device rename.) 725 * 726 * Copied from ufs_rename. 727 */ 728 if ((fvp->v_mount != tdvp->v_mount) || 729 (tvp && (fvp->v_mount != tvp->v_mount))) { 730 error = EXDEV; 731 goto errout; 732 } 733 if ((error = SET_DIROP(fdvp))!=0) 734 goto errout; 735 MARK_VNODE(fdvp); 736 MARK_VNODE(tdvp); 737 error = ufs_rename(ap); 738 UNMARK_VNODE(fdvp); 739 UNMARK_VNODE(tdvp); 740 SET_ENDOP(fs,fdvp,"rename"); 741 return (error); 742 743 errout: 744 VOP_ABORTOP(tdvp, ap->a_tcnp); /* XXX, why not in NFS? */ 745 if (tdvp == tvp) 746 vrele(tdvp); 747 else 748 vput(tdvp); 749 if (tvp) 750 vput(tvp); 751 VOP_ABORTOP(fdvp, ap->a_fcnp); /* XXX, why not in NFS? */ 752 vrele(fdvp); 753 vrele(fvp); 754 return (error); 755 } 756 757 /* XXX hack to avoid calling ITIMES in getattr */ 758 int 759 lfs_getattr(v) 760 void *v; 761 { 762 struct vop_getattr_args /* { 763 struct vnode *a_vp; 764 struct vattr *a_vap; 765 struct ucred *a_cred; 766 struct proc *a_p; 767 } */ *ap = v; 768 struct vnode *vp = ap->a_vp; 769 struct inode *ip = VTOI(vp); 770 struct vattr *vap = ap->a_vap; 771 /* 772 * Copy from inode table 773 */ 774 vap->va_fsid = ip->i_dev; 775 vap->va_fileid = ip->i_number; 776 vap->va_mode = ip->i_ffs_mode & ~IFMT; 777 vap->va_nlink = ip->i_ffs_nlink; 778 vap->va_uid = ip->i_ffs_uid; 779 vap->va_gid = ip->i_ffs_gid; 780 vap->va_rdev = (dev_t)ip->i_ffs_rdev; 781 vap->va_size = ip->i_ffs_size; 782 vap->va_atime.tv_sec = ip->i_ffs_atime; 783 vap->va_atime.tv_nsec = ip->i_ffs_atimensec; 784 vap->va_mtime.tv_sec = ip->i_ffs_mtime; 785 vap->va_mtime.tv_nsec = ip->i_ffs_mtimensec; 786 vap->va_ctime.tv_sec = ip->i_ffs_ctime; 787 vap->va_ctime.tv_nsec = ip->i_ffs_ctimensec; 788 vap->va_flags = ip->i_ffs_flags; 789 vap->va_gen = ip->i_ffs_gen; 790 /* this doesn't belong here */ 791 if (vp->v_type == VBLK) 792 vap->va_blocksize = BLKDEV_IOSIZE; 793 else if (vp->v_type == VCHR) 794 vap->va_blocksize = MAXBSIZE; 795 else 796 vap->va_blocksize = vp->v_mount->mnt_stat.f_iosize; 797 vap->va_bytes = dbtob((u_quad_t)ip->i_ffs_blocks); 798 vap->va_type = vp->v_type; 799 vap->va_filerev = ip->i_modrev; 800 return (0); 801 } 802 803 /* 804 * Close called 805 * 806 * XXX -- we were using ufs_close, but since it updates the 807 * times on the inode, we might need to bump the uinodes 808 * count. 809 */ 810 /* ARGSUSED */ 811 int 812 lfs_close(v) 813 void *v; 814 { 815 struct vop_close_args /* { 816 struct vnode *a_vp; 817 int a_fflag; 818 struct ucred *a_cred; 819 struct proc *a_p; 820 } */ *ap = v; 821 struct vnode *vp = ap->a_vp; 822 struct inode *ip = VTOI(vp); 823 struct timespec ts; 824 825 simple_lock(&vp->v_interlock); 826 if (vp->v_usecount > 1) { 827 TIMEVAL_TO_TIMESPEC(&time, &ts); 828 LFS_ITIMES(ip, &ts, &ts, &ts); 829 } 830 simple_unlock(&vp->v_interlock); 831 return (0); 832 } 833 834 /* 835 * Reclaim an inode so that it can be used for other purposes. 836 */ 837 int lfs_no_inactive = 0; 838 839 int 840 lfs_reclaim(v) 841 void *v; 842 { 843 struct vop_reclaim_args /* { 844 struct vnode *a_vp; 845 struct proc *a_p; 846 } */ *ap = v; 847 struct vnode *vp = ap->a_vp; 848 int error; 849 850 LFS_CLR_UINO(VTOI(vp), IN_ALLMOD); 851 if ((error = ufs_reclaim(vp, ap->a_p))) 852 return (error); 853 pool_put(&lfs_inode_pool, vp->v_data); 854 vp->v_data = NULL; 855 return (0); 856 } 857
Indexes created Tue Oct 21 08:09:48 GMT 2025