lfs_vnops.c revision 1.44
1 /* $NetBSD: lfs_vnops.c,v 1.44 2000/09/09 04:49:55 perseant 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 struct proc *a_p; 286 } */ *ap = v; 287 288 return (VOP_UPDATE(ap->a_vp, NULL, NULL, 289 (ap->a_flags & FSYNC_WAIT) != 0 ? UPDATE_WAIT : 0)); 290 } 291 292 /* 293 * Take IN_ADIROP off, then call ufs_inactive. 294 */ 295 int 296 lfs_inactive(v) 297 void *v; 298 { 299 struct vop_inactive_args /* { 300 struct vnode *a_vp; 301 struct proc *a_p; 302 } */ *ap = v; 303 struct inode *ip = VTOI(ap->a_vp); 304 305 if (ip->i_flag & IN_ADIROP) 306 --ip->i_lfs->lfs_nadirop; 307 ip->i_flag &= ~IN_ADIROP; 308 return ufs_inactive(v); 309 } 310 311 /* 312 * These macros are used to bracket UFS directory ops, so that we can 313 * identify all the pages touched during directory ops which need to 314 * be ordered and flushed atomically, so that they may be recovered. 315 */ 316 /* 317 * XXX KS - Because we have to mark nodes VDIROP in order to prevent 318 * the cache from reclaiming them while a dirop is in progress, we must 319 * also manage the number of nodes so marked (otherwise we can run out). 320 * We do this by setting lfs_dirvcount to the number of marked vnodes; it 321 * is decremented during segment write, when VDIROP is taken off. 322 */ 323 #define SET_DIROP(vp) lfs_set_dirop(vp) 324 static int lfs_set_dirop __P((struct vnode *)); 325 extern int lfs_dirvcount; 326 327 static int lfs_set_dirop(vp) 328 struct vnode *vp; 329 { 330 struct lfs *fs; 331 int error; 332 333 fs = VTOI(vp)->i_lfs; 334 /* 335 * We might need one directory block plus supporting indirect blocks, 336 * plus an inode block and ifile page for the new vnode. 337 */ 338 if ((error = lfs_reserve(fs, vp, fsbtodb(fs, NIADDR + 3))) != 0) 339 return (error); 340 if (fs->lfs_dirops == 0) 341 lfs_check(vp, LFS_UNUSED_LBN, 0); 342 while (fs->lfs_writer || lfs_dirvcount > LFS_MAXDIROP) { 343 if(fs->lfs_writer) 344 tsleep(&fs->lfs_dirops, PRIBIO + 1, "lfs_dirop", 0); 345 if(lfs_dirvcount > LFS_MAXDIROP && fs->lfs_dirops==0) { 346 ++fs->lfs_writer; 347 lfs_flush(fs, 0); 348 if(--fs->lfs_writer==0) 349 wakeup(&fs->lfs_dirops); 350 } 351 352 if(lfs_dirvcount > LFS_MAXDIROP) { 353 #ifdef DEBUG_LFS 354 printf("lfs_set_dirop: sleeping with dirops=%d, " 355 "dirvcount=%d\n", fs->lfs_dirops, 356 lfs_dirvcount); 357 #endif 358 if((error = tsleep(&lfs_dirvcount, PCATCH|PUSER, 359 "lfs_maxdirop", 0)) !=0) { 360 lfs_reserve(fs, vp, -fsbtodb(fs, NIADDR + 3)); 361 return error; 362 } 363 } 364 } 365 ++fs->lfs_dirops; 366 fs->lfs_doifile = 1; 367 368 return 0; 369 } 370 371 #define SET_ENDOP(fs,vp,str) { \ 372 --(fs)->lfs_dirops; \ 373 if (!(fs)->lfs_dirops) { \ 374 if ((fs)->lfs_nadirop) { \ 375 panic("SET_ENDOP: %s: no dirops but nadirop=%d\n", \ 376 (str), (fs)->lfs_nadirop); \ 377 } \ 378 wakeup(&(fs)->lfs_writer); \ 379 lfs_check((vp),LFS_UNUSED_LBN,0); \ 380 } \ 381 lfs_reserve(fs, vp, -fsbtodb(fs, NIADDR + 3)); /* XXX */ \ 382 } 383 384 #define MARK_VNODE(dvp) do { \ 385 if (!((dvp)->v_flag & VDIROP)) { \ 386 (void)lfs_vref(dvp); \ 387 ++lfs_dirvcount; \ 388 } \ 389 (dvp)->v_flag |= VDIROP; \ 390 if (!(VTOI(dvp)->i_flag & IN_ADIROP)) { \ 391 ++VTOI(dvp)->i_lfs->lfs_nadirop; \ 392 } \ 393 VTOI(dvp)->i_flag |= IN_ADIROP; \ 394 } while(0) 395 396 #define UNMARK_VNODE(vp) lfs_unmark_vnode(vp) 397 398 void lfs_unmark_vnode(vp) 399 struct vnode *vp; 400 { 401 struct inode *ip; 402 403 ip = VTOI(vp); 404 405 if (ip->i_flag & IN_ADIROP) 406 --ip->i_lfs->lfs_nadirop; 407 ip->i_flag &= ~IN_ADIROP; 408 } 409 410 int 411 lfs_symlink(v) 412 void *v; 413 { 414 struct vop_symlink_args /* { 415 struct vnode *a_dvp; 416 struct vnode **a_vpp; 417 struct componentname *a_cnp; 418 struct vattr *a_vap; 419 char *a_target; 420 } */ *ap = v; 421 int error; 422 423 if ((error = SET_DIROP(ap->a_dvp)) != 0) { 424 vput(ap->a_dvp); 425 return error; 426 } 427 MARK_VNODE(ap->a_dvp); 428 error = ufs_symlink(ap); 429 UNMARK_VNODE(ap->a_dvp); 430 if (*(ap->a_vpp)) 431 UNMARK_VNODE(*(ap->a_vpp)); 432 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"symlink"); 433 return (error); 434 } 435 436 int 437 lfs_mknod(v) 438 void *v; 439 { 440 struct vop_mknod_args /* { 441 struct vnode *a_dvp; 442 struct vnode **a_vpp; 443 struct componentname *a_cnp; 444 struct vattr *a_vap; 445 } */ *ap = v; 446 struct vattr *vap = ap->a_vap; 447 struct vnode **vpp = ap->a_vpp; 448 struct inode *ip; 449 int error; 450 451 if ((error = SET_DIROP(ap->a_dvp)) != 0) { 452 vput(ap->a_dvp); 453 return error; 454 } 455 MARK_VNODE(ap->a_dvp); 456 error = ufs_makeinode(MAKEIMODE(vap->va_type, vap->va_mode), 457 ap->a_dvp, vpp, ap->a_cnp); 458 UNMARK_VNODE(ap->a_dvp); 459 if (*(ap->a_vpp)) 460 UNMARK_VNODE(*(ap->a_vpp)); 461 462 /* Either way we're done with the dirop at this point */ 463 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"mknod"); 464 465 if (error) 466 return (error); 467 468 ip = VTOI(*vpp); 469 ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE; 470 if (vap->va_rdev != VNOVAL) { 471 /* 472 * Want to be able to use this to make badblock 473 * inodes, so don't truncate the dev number. 474 */ 475 #if 0 476 ip->i_ffs_rdev = ufs_rw32(vap->va_rdev, 477 UFS_MPNEEDSWAP((*vpp)->v_mount)); 478 #else 479 ip->i_ffs_rdev = vap->va_rdev; 480 #endif 481 } 482 /* 483 * Call fsync to write the vnode so that we don't have to deal with 484 * flushing it when it's marked VDIROP|VXLOCK. 485 * 486 * XXX KS - If we can't flush we also can't call vgone(), so must 487 * return. But, that leaves this vnode in limbo, also not good. 488 * Can this ever happen (barring hardware failure)? 489 */ 490 if ((error = VOP_FSYNC(*vpp, NOCRED, FSYNC_WAIT, curproc)) != 0) { 491 printf("Couldn't fsync in mknod (ino %d)---what do I do?\n", 492 VTOI(*vpp)->i_number); 493 return (error); 494 } 495 /* 496 * Remove vnode so that it will be reloaded by VFS_VGET and 497 * checked to see if it is an alias of an existing entry in 498 * the inode cache. 499 */ 500 /* Used to be vput, but that causes us to call VOP_INACTIVE twice. */ 501 VOP_UNLOCK(*vpp, 0); 502 lfs_vunref(*vpp); 503 (*vpp)->v_type = VNON; 504 vgone(*vpp); 505 *vpp = 0; 506 return (0); 507 } 508 509 int 510 lfs_create(v) 511 void *v; 512 { 513 struct vop_create_args /* { 514 struct vnode *a_dvp; 515 struct vnode **a_vpp; 516 struct componentname *a_cnp; 517 struct vattr *a_vap; 518 } */ *ap = v; 519 int error; 520 521 if((error = SET_DIROP(ap->a_dvp)) != 0) { 522 vput(ap->a_dvp); 523 return error; 524 } 525 MARK_VNODE(ap->a_dvp); 526 error = ufs_create(ap); 527 UNMARK_VNODE(ap->a_dvp); 528 if (*(ap->a_vpp)) 529 UNMARK_VNODE(*(ap->a_vpp)); 530 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"create"); 531 return (error); 532 } 533 534 int 535 lfs_whiteout(v) 536 void *v; 537 { 538 struct vop_whiteout_args /* { 539 struct vnode *a_dvp; 540 struct componentname *a_cnp; 541 int a_flags; 542 } */ *ap = v; 543 int error; 544 545 if ((error = SET_DIROP(ap->a_dvp)) != 0) 546 /* XXX no unlock here? */ 547 return error; 548 MARK_VNODE(ap->a_dvp); 549 error = ufs_whiteout(ap); 550 UNMARK_VNODE(ap->a_dvp); 551 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"whiteout"); 552 return (error); 553 } 554 555 int 556 lfs_mkdir(v) 557 void *v; 558 { 559 struct vop_mkdir_args /* { 560 struct vnode *a_dvp; 561 struct vnode **a_vpp; 562 struct componentname *a_cnp; 563 struct vattr *a_vap; 564 } */ *ap = v; 565 int error; 566 567 if((error = SET_DIROP(ap->a_dvp)) != 0) { 568 vput(ap->a_dvp); 569 return error; 570 } 571 MARK_VNODE(ap->a_dvp); 572 error = ufs_mkdir(ap); 573 UNMARK_VNODE(ap->a_dvp); 574 if (*(ap->a_vpp)) 575 UNMARK_VNODE(*(ap->a_vpp)); 576 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"mkdir"); 577 return (error); 578 } 579 580 int 581 lfs_remove(v) 582 void *v; 583 { 584 struct vop_remove_args /* { 585 struct vnode *a_dvp; 586 struct vnode *a_vp; 587 struct componentname *a_cnp; 588 } */ *ap = v; 589 struct vnode *dvp, *vp; 590 int error; 591 592 dvp = ap->a_dvp; 593 vp = ap->a_vp; 594 if ((error = SET_DIROP(dvp)) != 0) { 595 if (dvp == vp) 596 vrele(vp); 597 else 598 vput(vp); 599 vput(dvp); 600 return error; 601 } 602 MARK_VNODE(dvp); 603 MARK_VNODE(vp); 604 error = ufs_remove(ap); 605 UNMARK_VNODE(dvp); 606 UNMARK_VNODE(vp); 607 608 /* 609 * If ufs_remove failed, vp doesn't need to be VDIROP any more. 610 * If it succeeded, we can go ahead and wipe out vp, since 611 * its loss won't appear on disk until checkpoint, and by then 612 * dvp will have been written, completing the dirop. 613 */ 614 --lfs_dirvcount; 615 vp->v_flag &= ~VDIROP; 616 wakeup(&lfs_dirvcount); 617 vrele(vp); 618 619 SET_ENDOP(VTOI(dvp)->i_lfs,dvp,"remove"); 620 return (error); 621 } 622 623 int 624 lfs_rmdir(v) 625 void *v; 626 { 627 struct vop_rmdir_args /* { 628 struct vnodeop_desc *a_desc; 629 struct vnode *a_dvp; 630 struct vnode *a_vp; 631 struct componentname *a_cnp; 632 } */ *ap = v; 633 int error; 634 635 if ((error = SET_DIROP(ap->a_dvp)) != 0) { 636 vrele(ap->a_dvp); 637 if (ap->a_vp->v_mountedhere != NULL) 638 VOP_UNLOCK(ap->a_dvp, 0); 639 vput(ap->a_vp); 640 return error; 641 } 642 MARK_VNODE(ap->a_dvp); 643 MARK_VNODE(ap->a_vp); 644 error = ufs_rmdir(ap); 645 UNMARK_VNODE(ap->a_dvp); 646 UNMARK_VNODE(ap->a_vp); 647 648 /* 649 * If ufs_rmdir failed, vp doesn't need to be VDIROP any more. 650 * If it succeeded, we can go ahead and wipe out vp, since 651 * its loss won't appear on disk until checkpoint, and by then 652 * dvp will have been written, completing the dirop. 653 */ 654 --lfs_dirvcount; 655 ap->a_vp->v_flag &= ~VDIROP; 656 wakeup(&lfs_dirvcount); 657 vrele(ap->a_vp); 658 659 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"rmdir"); 660 return (error); 661 } 662 663 int 664 lfs_link(v) 665 void *v; 666 { 667 struct vop_link_args /* { 668 struct vnode *a_dvp; 669 struct vnode *a_vp; 670 struct componentname *a_cnp; 671 } */ *ap = v; 672 int error; 673 674 if ((error = SET_DIROP(ap->a_dvp)) != 0) { 675 vput(ap->a_dvp); 676 return error; 677 } 678 MARK_VNODE(ap->a_dvp); 679 error = ufs_link(ap); 680 UNMARK_VNODE(ap->a_dvp); 681 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"link"); 682 return (error); 683 } 684 685 int 686 lfs_rename(v) 687 void *v; 688 { 689 struct vop_rename_args /* { 690 struct vnode *a_fdvp; 691 struct vnode *a_fvp; 692 struct componentname *a_fcnp; 693 struct vnode *a_tdvp; 694 struct vnode *a_tvp; 695 struct componentname *a_tcnp; 696 } */ *ap = v; 697 struct vnode *tvp, *fvp, *tdvp, *fdvp; 698 int error; 699 struct lfs *fs; 700 701 fs = VTOI(ap->a_fdvp)->i_lfs; 702 tvp = ap->a_tvp; 703 tdvp = ap->a_tdvp; 704 fvp = ap->a_fvp; 705 fdvp = ap->a_fdvp; 706 707 /* 708 * Check for cross-device rename. 709 * If it is, we don't want to set dirops, just error out. 710 * (In particular note that MARK_VNODE(tdvp) will DTWT on 711 * a cross-device rename.) 712 * 713 * Copied from ufs_rename. 714 */ 715 if ((fvp->v_mount != tdvp->v_mount) || 716 (tvp && (fvp->v_mount != tvp->v_mount))) { 717 error = EXDEV; 718 goto errout; 719 } 720 if ((error = SET_DIROP(fdvp))!=0) 721 goto errout; 722 MARK_VNODE(fdvp); 723 MARK_VNODE(tdvp); 724 error = ufs_rename(ap); 725 UNMARK_VNODE(fdvp); 726 UNMARK_VNODE(tdvp); 727 SET_ENDOP(fs,fdvp,"rename"); 728 return (error); 729 730 errout: 731 VOP_ABORTOP(tdvp, ap->a_tcnp); /* XXX, why not in NFS? */ 732 if (tdvp == tvp) 733 vrele(tdvp); 734 else 735 vput(tdvp); 736 if (tvp) 737 vput(tvp); 738 VOP_ABORTOP(fdvp, ap->a_fcnp); /* XXX, why not in NFS? */ 739 vrele(fdvp); 740 vrele(fvp); 741 return (error); 742 } 743 744 /* XXX hack to avoid calling ITIMES in getattr */ 745 int 746 lfs_getattr(v) 747 void *v; 748 { 749 struct vop_getattr_args /* { 750 struct vnode *a_vp; 751 struct vattr *a_vap; 752 struct ucred *a_cred; 753 struct proc *a_p; 754 } */ *ap = v; 755 struct vnode *vp = ap->a_vp; 756 struct inode *ip = VTOI(vp); 757 struct vattr *vap = ap->a_vap; 758 /* 759 * Copy from inode table 760 */ 761 vap->va_fsid = ip->i_dev; 762 vap->va_fileid = ip->i_number; 763 vap->va_mode = ip->i_ffs_mode & ~IFMT; 764 vap->va_nlink = ip->i_ffs_nlink; 765 vap->va_uid = ip->i_ffs_uid; 766 vap->va_gid = ip->i_ffs_gid; 767 vap->va_rdev = (dev_t)ip->i_ffs_rdev; 768 vap->va_size = ip->i_ffs_size; 769 vap->va_atime.tv_sec = ip->i_ffs_atime; 770 vap->va_atime.tv_nsec = ip->i_ffs_atimensec; 771 vap->va_mtime.tv_sec = ip->i_ffs_mtime; 772 vap->va_mtime.tv_nsec = ip->i_ffs_mtimensec; 773 vap->va_ctime.tv_sec = ip->i_ffs_ctime; 774 vap->va_ctime.tv_nsec = ip->i_ffs_ctimensec; 775 vap->va_flags = ip->i_ffs_flags; 776 vap->va_gen = ip->i_ffs_gen; 777 /* this doesn't belong here */ 778 if (vp->v_type == VBLK) 779 vap->va_blocksize = BLKDEV_IOSIZE; 780 else if (vp->v_type == VCHR) 781 vap->va_blocksize = MAXBSIZE; 782 else 783 vap->va_blocksize = vp->v_mount->mnt_stat.f_iosize; 784 vap->va_bytes = dbtob((u_quad_t)ip->i_ffs_blocks); 785 vap->va_type = vp->v_type; 786 vap->va_filerev = ip->i_modrev; 787 return (0); 788 } 789 790 /* 791 * Close called 792 * 793 * XXX -- we were using ufs_close, but since it updates the 794 * times on the inode, we might need to bump the uinodes 795 * count. 796 */ 797 /* ARGSUSED */ 798 int 799 lfs_close(v) 800 void *v; 801 { 802 struct vop_close_args /* { 803 struct vnode *a_vp; 804 int a_fflag; 805 struct ucred *a_cred; 806 struct proc *a_p; 807 } */ *ap = v; 808 struct vnode *vp = ap->a_vp; 809 struct inode *ip = VTOI(vp); 810 struct timespec ts; 811 812 simple_lock(&vp->v_interlock); 813 if (vp->v_usecount > 1) { 814 TIMEVAL_TO_TIMESPEC(&time, &ts); 815 LFS_ITIMES(ip, &ts, &ts, &ts); 816 } 817 simple_unlock(&vp->v_interlock); 818 return (0); 819 } 820 821 /* 822 * Reclaim an inode so that it can be used for other purposes. 823 */ 824 int lfs_no_inactive = 0; 825 826 int 827 lfs_reclaim(v) 828 void *v; 829 { 830 struct vop_reclaim_args /* { 831 struct vnode *a_vp; 832 struct proc *a_p; 833 } */ *ap = v; 834 struct vnode *vp = ap->a_vp; 835 int error; 836 837 LFS_CLR_UINO(VTOI(vp), IN_ALLMOD); 838 if ((error = ufs_reclaim(vp, ap->a_p))) 839 return (error); 840 pool_put(&lfs_inode_pool, vp->v_data); 841 vp->v_data = NULL; 842 return (0); 843 } 844
Indexes created Mon Sep 29 21:09:56 GMT 2025