lfs_vnops.c revision 1.45
1 /* $NetBSD: lfs_vnops.c,v 1.45 2000/09/19 22:03:15 fvdl 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 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 struct vnodeopv_desc lfs_vnodeop_opv_desc = 154 { &lfs_vnodeop_p, lfs_vnodeop_entries }; 155 156 int (**lfs_specop_p) __P((void *)); 157 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 struct vnodeopv_desc lfs_specop_opv_desc = 205 { &lfs_specop_p, lfs_specop_entries }; 206 207 int (**lfs_fifoop_p) __P((void *)); 208 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 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 return (VOP_UPDATE(ap->a_vp, NULL, NULL, 291 (ap->a_flags & FSYNC_WAIT) != 0 ? UPDATE_WAIT : 0)); 292 } 293 294 /* 295 * Take IN_ADIROP off, then call ufs_inactive. 296 */ 297 int 298 lfs_inactive(v) 299 void *v; 300 { 301 struct vop_inactive_args /* { 302 struct vnode *a_vp; 303 struct proc *a_p; 304 } */ *ap = v; 305 struct inode *ip = VTOI(ap->a_vp); 306 307 if (ip->i_flag & IN_ADIROP) 308 --ip->i_lfs->lfs_nadirop; 309 ip->i_flag &= ~IN_ADIROP; 310 return ufs_inactive(v); 311 } 312 313 /* 314 * These macros are used to bracket UFS directory ops, so that we can 315 * identify all the pages touched during directory ops which need to 316 * be ordered and flushed atomically, so that they may be recovered. 317 */ 318 /* 319 * XXX KS - Because we have to mark nodes VDIROP in order to prevent 320 * the cache from reclaiming them while a dirop is in progress, we must 321 * also manage the number of nodes so marked (otherwise we can run out). 322 * We do this by setting lfs_dirvcount to the number of marked vnodes; it 323 * is decremented during segment write, when VDIROP is taken off. 324 */ 325 #define SET_DIROP(vp) lfs_set_dirop(vp) 326 static int lfs_set_dirop __P((struct vnode *)); 327 extern int lfs_dirvcount; 328 329 static int lfs_set_dirop(vp) 330 struct vnode *vp; 331 { 332 struct lfs *fs; 333 int error; 334 335 fs = VTOI(vp)->i_lfs; 336 /* 337 * We might need one directory block plus supporting indirect blocks, 338 * plus an inode block and ifile page for the new vnode. 339 */ 340 if ((error = lfs_reserve(fs, vp, fsbtodb(fs, NIADDR + 3))) != 0) 341 return (error); 342 if (fs->lfs_dirops == 0) 343 lfs_check(vp, LFS_UNUSED_LBN, 0); 344 while (fs->lfs_writer || lfs_dirvcount > LFS_MAXDIROP) { 345 if(fs->lfs_writer) 346 tsleep(&fs->lfs_dirops, PRIBIO + 1, "lfs_dirop", 0); 347 if(lfs_dirvcount > LFS_MAXDIROP && fs->lfs_dirops==0) { 348 ++fs->lfs_writer; 349 lfs_flush(fs, 0); 350 if(--fs->lfs_writer==0) 351 wakeup(&fs->lfs_dirops); 352 } 353 354 if(lfs_dirvcount > LFS_MAXDIROP) { 355 #ifdef DEBUG_LFS 356 printf("lfs_set_dirop: sleeping with dirops=%d, " 357 "dirvcount=%d\n", fs->lfs_dirops, 358 lfs_dirvcount); 359 #endif 360 if((error = tsleep(&lfs_dirvcount, PCATCH|PUSER, 361 "lfs_maxdirop", 0)) !=0) { 362 lfs_reserve(fs, vp, -fsbtodb(fs, NIADDR + 3)); 363 return error; 364 } 365 } 366 } 367 ++fs->lfs_dirops; 368 fs->lfs_doifile = 1; 369 370 return 0; 371 } 372 373 #define SET_ENDOP(fs,vp,str) { \ 374 --(fs)->lfs_dirops; \ 375 if (!(fs)->lfs_dirops) { \ 376 if ((fs)->lfs_nadirop) { \ 377 panic("SET_ENDOP: %s: no dirops but nadirop=%d\n", \ 378 (str), (fs)->lfs_nadirop); \ 379 } \ 380 wakeup(&(fs)->lfs_writer); \ 381 lfs_check((vp),LFS_UNUSED_LBN,0); \ 382 } \ 383 lfs_reserve(fs, vp, -fsbtodb(fs, NIADDR + 3)); /* XXX */ \ 384 } 385 386 #define MARK_VNODE(dvp) do { \ 387 if (!((dvp)->v_flag & VDIROP)) { \ 388 (void)lfs_vref(dvp); \ 389 ++lfs_dirvcount; \ 390 } \ 391 (dvp)->v_flag |= VDIROP; \ 392 if (!(VTOI(dvp)->i_flag & IN_ADIROP)) { \ 393 ++VTOI(dvp)->i_lfs->lfs_nadirop; \ 394 } \ 395 VTOI(dvp)->i_flag |= IN_ADIROP; \ 396 } while(0) 397 398 #define UNMARK_VNODE(vp) lfs_unmark_vnode(vp) 399 400 void lfs_unmark_vnode(vp) 401 struct vnode *vp; 402 { 403 struct inode *ip; 404 405 ip = VTOI(vp); 406 407 if (ip->i_flag & IN_ADIROP) 408 --ip->i_lfs->lfs_nadirop; 409 ip->i_flag &= ~IN_ADIROP; 410 } 411 412 int 413 lfs_symlink(v) 414 void *v; 415 { 416 struct vop_symlink_args /* { 417 struct vnode *a_dvp; 418 struct vnode **a_vpp; 419 struct componentname *a_cnp; 420 struct vattr *a_vap; 421 char *a_target; 422 } */ *ap = v; 423 int error; 424 425 if ((error = SET_DIROP(ap->a_dvp)) != 0) { 426 vput(ap->a_dvp); 427 return error; 428 } 429 MARK_VNODE(ap->a_dvp); 430 error = ufs_symlink(ap); 431 UNMARK_VNODE(ap->a_dvp); 432 if (*(ap->a_vpp)) 433 UNMARK_VNODE(*(ap->a_vpp)); 434 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"symlink"); 435 return (error); 436 } 437 438 int 439 lfs_mknod(v) 440 void *v; 441 { 442 struct vop_mknod_args /* { 443 struct vnode *a_dvp; 444 struct vnode **a_vpp; 445 struct componentname *a_cnp; 446 struct vattr *a_vap; 447 } */ *ap = v; 448 struct vattr *vap = ap->a_vap; 449 struct vnode **vpp = ap->a_vpp; 450 struct inode *ip; 451 int error; 452 453 if ((error = SET_DIROP(ap->a_dvp)) != 0) { 454 vput(ap->a_dvp); 455 return error; 456 } 457 MARK_VNODE(ap->a_dvp); 458 error = ufs_makeinode(MAKEIMODE(vap->va_type, vap->va_mode), 459 ap->a_dvp, vpp, ap->a_cnp); 460 UNMARK_VNODE(ap->a_dvp); 461 if (*(ap->a_vpp)) 462 UNMARK_VNODE(*(ap->a_vpp)); 463 464 /* Either way we're done with the dirop at this point */ 465 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"mknod"); 466 467 if (error) 468 return (error); 469 470 ip = VTOI(*vpp); 471 ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE; 472 if (vap->va_rdev != VNOVAL) { 473 /* 474 * Want to be able to use this to make badblock 475 * inodes, so don't truncate the dev number. 476 */ 477 #if 0 478 ip->i_ffs_rdev = ufs_rw32(vap->va_rdev, 479 UFS_MPNEEDSWAP((*vpp)->v_mount)); 480 #else 481 ip->i_ffs_rdev = vap->va_rdev; 482 #endif 483 } 484 /* 485 * Call fsync to write the vnode so that we don't have to deal with 486 * flushing it when it's marked VDIROP|VXLOCK. 487 * 488 * XXX KS - If we can't flush we also can't call vgone(), so must 489 * return. But, that leaves this vnode in limbo, also not good. 490 * Can this ever happen (barring hardware failure)? 491 */ 492 if ((error = VOP_FSYNC(*vpp, NOCRED, FSYNC_WAIT, 0, 0, curproc)) != 0) { 493 printf("Couldn't fsync in mknod (ino %d)---what do I do?\n", 494 VTOI(*vpp)->i_number); 495 return (error); 496 } 497 /* 498 * Remove vnode so that it will be reloaded by VFS_VGET and 499 * checked to see if it is an alias of an existing entry in 500 * the inode cache. 501 */ 502 /* Used to be vput, but that causes us to call VOP_INACTIVE twice. */ 503 VOP_UNLOCK(*vpp, 0); 504 lfs_vunref(*vpp); 505 (*vpp)->v_type = VNON; 506 vgone(*vpp); 507 *vpp = 0; 508 return (0); 509 } 510 511 int 512 lfs_create(v) 513 void *v; 514 { 515 struct vop_create_args /* { 516 struct vnode *a_dvp; 517 struct vnode **a_vpp; 518 struct componentname *a_cnp; 519 struct vattr *a_vap; 520 } */ *ap = v; 521 int error; 522 523 if((error = SET_DIROP(ap->a_dvp)) != 0) { 524 vput(ap->a_dvp); 525 return error; 526 } 527 MARK_VNODE(ap->a_dvp); 528 error = ufs_create(ap); 529 UNMARK_VNODE(ap->a_dvp); 530 if (*(ap->a_vpp)) 531 UNMARK_VNODE(*(ap->a_vpp)); 532 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"create"); 533 return (error); 534 } 535 536 int 537 lfs_whiteout(v) 538 void *v; 539 { 540 struct vop_whiteout_args /* { 541 struct vnode *a_dvp; 542 struct componentname *a_cnp; 543 int a_flags; 544 } */ *ap = v; 545 int error; 546 547 if ((error = SET_DIROP(ap->a_dvp)) != 0) 548 /* XXX no unlock here? */ 549 return error; 550 MARK_VNODE(ap->a_dvp); 551 error = ufs_whiteout(ap); 552 UNMARK_VNODE(ap->a_dvp); 553 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"whiteout"); 554 return (error); 555 } 556 557 int 558 lfs_mkdir(v) 559 void *v; 560 { 561 struct vop_mkdir_args /* { 562 struct vnode *a_dvp; 563 struct vnode **a_vpp; 564 struct componentname *a_cnp; 565 struct vattr *a_vap; 566 } */ *ap = v; 567 int error; 568 569 if((error = SET_DIROP(ap->a_dvp)) != 0) { 570 vput(ap->a_dvp); 571 return error; 572 } 573 MARK_VNODE(ap->a_dvp); 574 error = ufs_mkdir(ap); 575 UNMARK_VNODE(ap->a_dvp); 576 if (*(ap->a_vpp)) 577 UNMARK_VNODE(*(ap->a_vpp)); 578 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"mkdir"); 579 return (error); 580 } 581 582 int 583 lfs_remove(v) 584 void *v; 585 { 586 struct vop_remove_args /* { 587 struct vnode *a_dvp; 588 struct vnode *a_vp; 589 struct componentname *a_cnp; 590 } */ *ap = v; 591 struct vnode *dvp, *vp; 592 int error; 593 594 dvp = ap->a_dvp; 595 vp = ap->a_vp; 596 if ((error = SET_DIROP(dvp)) != 0) { 597 if (dvp == vp) 598 vrele(vp); 599 else 600 vput(vp); 601 vput(dvp); 602 return error; 603 } 604 MARK_VNODE(dvp); 605 MARK_VNODE(vp); 606 error = ufs_remove(ap); 607 UNMARK_VNODE(dvp); 608 UNMARK_VNODE(vp); 609 610 /* 611 * If ufs_remove failed, vp doesn't need to be VDIROP any more. 612 * If it succeeded, we can go ahead and wipe out vp, since 613 * its loss won't appear on disk until checkpoint, and by then 614 * dvp will have been written, completing the dirop. 615 */ 616 --lfs_dirvcount; 617 vp->v_flag &= ~VDIROP; 618 wakeup(&lfs_dirvcount); 619 vrele(vp); 620 621 SET_ENDOP(VTOI(dvp)->i_lfs,dvp,"remove"); 622 return (error); 623 } 624 625 int 626 lfs_rmdir(v) 627 void *v; 628 { 629 struct vop_rmdir_args /* { 630 struct vnodeop_desc *a_desc; 631 struct vnode *a_dvp; 632 struct vnode *a_vp; 633 struct componentname *a_cnp; 634 } */ *ap = v; 635 int error; 636 637 if ((error = SET_DIROP(ap->a_dvp)) != 0) { 638 vrele(ap->a_dvp); 639 if (ap->a_vp->v_mountedhere != NULL) 640 VOP_UNLOCK(ap->a_dvp, 0); 641 vput(ap->a_vp); 642 return error; 643 } 644 MARK_VNODE(ap->a_dvp); 645 MARK_VNODE(ap->a_vp); 646 error = ufs_rmdir(ap); 647 UNMARK_VNODE(ap->a_dvp); 648 UNMARK_VNODE(ap->a_vp); 649 650 /* 651 * If ufs_rmdir failed, vp doesn't need to be VDIROP any more. 652 * If it succeeded, we can go ahead and wipe out vp, since 653 * its loss won't appear on disk until checkpoint, and by then 654 * dvp will have been written, completing the dirop. 655 */ 656 --lfs_dirvcount; 657 ap->a_vp->v_flag &= ~VDIROP; 658 wakeup(&lfs_dirvcount); 659 vrele(ap->a_vp); 660 661 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"rmdir"); 662 return (error); 663 } 664 665 int 666 lfs_link(v) 667 void *v; 668 { 669 struct vop_link_args /* { 670 struct vnode *a_dvp; 671 struct vnode *a_vp; 672 struct componentname *a_cnp; 673 } */ *ap = v; 674 int error; 675 676 if ((error = SET_DIROP(ap->a_dvp)) != 0) { 677 vput(ap->a_dvp); 678 return error; 679 } 680 MARK_VNODE(ap->a_dvp); 681 error = ufs_link(ap); 682 UNMARK_VNODE(ap->a_dvp); 683 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"link"); 684 return (error); 685 } 686 687 int 688 lfs_rename(v) 689 void *v; 690 { 691 struct vop_rename_args /* { 692 struct vnode *a_fdvp; 693 struct vnode *a_fvp; 694 struct componentname *a_fcnp; 695 struct vnode *a_tdvp; 696 struct vnode *a_tvp; 697 struct componentname *a_tcnp; 698 } */ *ap = v; 699 struct vnode *tvp, *fvp, *tdvp, *fdvp; 700 int error; 701 struct lfs *fs; 702 703 fs = VTOI(ap->a_fdvp)->i_lfs; 704 tvp = ap->a_tvp; 705 tdvp = ap->a_tdvp; 706 fvp = ap->a_fvp; 707 fdvp = ap->a_fdvp; 708 709 /* 710 * Check for cross-device rename. 711 * If it is, we don't want to set dirops, just error out. 712 * (In particular note that MARK_VNODE(tdvp) will DTWT on 713 * a cross-device rename.) 714 * 715 * Copied from ufs_rename. 716 */ 717 if ((fvp->v_mount != tdvp->v_mount) || 718 (tvp && (fvp->v_mount != tvp->v_mount))) { 719 error = EXDEV; 720 goto errout; 721 } 722 if ((error = SET_DIROP(fdvp))!=0) 723 goto errout; 724 MARK_VNODE(fdvp); 725 MARK_VNODE(tdvp); 726 error = ufs_rename(ap); 727 UNMARK_VNODE(fdvp); 728 UNMARK_VNODE(tdvp); 729 SET_ENDOP(fs,fdvp,"rename"); 730 return (error); 731 732 errout: 733 VOP_ABORTOP(tdvp, ap->a_tcnp); /* XXX, why not in NFS? */ 734 if (tdvp == tvp) 735 vrele(tdvp); 736 else 737 vput(tdvp); 738 if (tvp) 739 vput(tvp); 740 VOP_ABORTOP(fdvp, ap->a_fcnp); /* XXX, why not in NFS? */ 741 vrele(fdvp); 742 vrele(fvp); 743 return (error); 744 } 745 746 /* XXX hack to avoid calling ITIMES in getattr */ 747 int 748 lfs_getattr(v) 749 void *v; 750 { 751 struct vop_getattr_args /* { 752 struct vnode *a_vp; 753 struct vattr *a_vap; 754 struct ucred *a_cred; 755 struct proc *a_p; 756 } */ *ap = v; 757 struct vnode *vp = ap->a_vp; 758 struct inode *ip = VTOI(vp); 759 struct vattr *vap = ap->a_vap; 760 /* 761 * Copy from inode table 762 */ 763 vap->va_fsid = ip->i_dev; 764 vap->va_fileid = ip->i_number; 765 vap->va_mode = ip->i_ffs_mode & ~IFMT; 766 vap->va_nlink = ip->i_ffs_nlink; 767 vap->va_uid = ip->i_ffs_uid; 768 vap->va_gid = ip->i_ffs_gid; 769 vap->va_rdev = (dev_t)ip->i_ffs_rdev; 770 vap->va_size = ip->i_ffs_size; 771 vap->va_atime.tv_sec = ip->i_ffs_atime; 772 vap->va_atime.tv_nsec = ip->i_ffs_atimensec; 773 vap->va_mtime.tv_sec = ip->i_ffs_mtime; 774 vap->va_mtime.tv_nsec = ip->i_ffs_mtimensec; 775 vap->va_ctime.tv_sec = ip->i_ffs_ctime; 776 vap->va_ctime.tv_nsec = ip->i_ffs_ctimensec; 777 vap->va_flags = ip->i_ffs_flags; 778 vap->va_gen = ip->i_ffs_gen; 779 /* this doesn't belong here */ 780 if (vp->v_type == VBLK) 781 vap->va_blocksize = BLKDEV_IOSIZE; 782 else if (vp->v_type == VCHR) 783 vap->va_blocksize = MAXBSIZE; 784 else 785 vap->va_blocksize = vp->v_mount->mnt_stat.f_iosize; 786 vap->va_bytes = dbtob((u_quad_t)ip->i_ffs_blocks); 787 vap->va_type = vp->v_type; 788 vap->va_filerev = ip->i_modrev; 789 return (0); 790 } 791 792 /* 793 * Close called 794 * 795 * XXX -- we were using ufs_close, but since it updates the 796 * times on the inode, we might need to bump the uinodes 797 * count. 798 */ 799 /* ARGSUSED */ 800 int 801 lfs_close(v) 802 void *v; 803 { 804 struct vop_close_args /* { 805 struct vnode *a_vp; 806 int a_fflag; 807 struct ucred *a_cred; 808 struct proc *a_p; 809 } */ *ap = v; 810 struct vnode *vp = ap->a_vp; 811 struct inode *ip = VTOI(vp); 812 struct timespec ts; 813 814 simple_lock(&vp->v_interlock); 815 if (vp->v_usecount > 1) { 816 TIMEVAL_TO_TIMESPEC(&time, &ts); 817 LFS_ITIMES(ip, &ts, &ts, &ts); 818 } 819 simple_unlock(&vp->v_interlock); 820 return (0); 821 } 822 823 /* 824 * Reclaim an inode so that it can be used for other purposes. 825 */ 826 int lfs_no_inactive = 0; 827 828 int 829 lfs_reclaim(v) 830 void *v; 831 { 832 struct vop_reclaim_args /* { 833 struct vnode *a_vp; 834 struct proc *a_p; 835 } */ *ap = v; 836 struct vnode *vp = ap->a_vp; 837 int error; 838 839 LFS_CLR_UINO(VTOI(vp), IN_ALLMOD); 840 if ((error = ufs_reclaim(vp, ap->a_p))) 841 return (error); 842 pool_put(&lfs_inode_pool, vp->v_data); 843 vp->v_data = NULL; 844 return (0); 845 } 846
Indexes created Tue Sep 30 07:10:03 GMT 2025