lfs_vnops.c revision 1.37
1 /* $NetBSD: lfs_vnops.c,v 1.37 2000/05/27 00:19:54 perseant Exp $ */ 2 3 /*- 4 * Copyright (c) 1999 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, ufs_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, ufs_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, ufs_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 #define LFS_READWRITE 261 #include <ufs/ufs/ufs_readwrite.c> 262 #undef LFS_READWRITE 263 264 /* 265 * Synch an open file. 266 */ 267 /* ARGSUSED */ 268 int 269 lfs_fsync(v) 270 void *v; 271 { 272 struct vop_fsync_args /* { 273 struct vnode *a_vp; 274 struct ucred *a_cred; 275 int a_flags; 276 struct proc *a_p; 277 } */ *ap = v; 278 279 return (VOP_UPDATE(ap->a_vp, NULL, NULL, 280 (ap->a_flags & FSYNC_WAIT) != 0 ? UPDATE_WAIT : 0)); 281 } 282 283 /* 284 * These macros are used to bracket UFS directory ops, so that we can 285 * identify all the pages touched during directory ops which need to 286 * be ordered and flushed atomically, so that they may be recovered. 287 */ 288 /* 289 * XXX KS - Because we have to mark nodes VDIROP in order to prevent 290 * the cache from reclaiming them while a dirop is in progress, we must 291 * also manage the number of nodes so marked (otherwise we can run out). 292 * We do this by setting lfs_dirvcount to the number of marked vnodes; it 293 * is decremented during segment write, when VDIROP is taken off. 294 */ 295 #define SET_DIROP(fs) lfs_set_dirop(fs) 296 static int lfs_set_dirop __P((struct lfs *)); 297 extern int lfs_dirvcount; 298 299 static int lfs_set_dirop(fs) 300 struct lfs *fs; 301 { 302 int error; 303 304 while (fs->lfs_writer || lfs_dirvcount>LFS_MAXDIROP) { 305 if(fs->lfs_writer) 306 tsleep(&fs->lfs_dirops, PRIBIO + 1, "lfs_dirop", 0); 307 if(lfs_dirvcount > LFS_MAXDIROP && fs->lfs_dirops==0) { 308 ++fs->lfs_writer; 309 lfs_flush(fs, 0); 310 if(--fs->lfs_writer==0) 311 wakeup(&fs->lfs_dirops); 312 } 313 314 if(lfs_dirvcount > LFS_MAXDIROP) { 315 #ifdef DEBUG_LFS 316 printf("lfs_set_dirop: sleeping with dirops=%d, dirvcount=%d\n",fs->lfs_dirops,lfs_dirvcount); 317 #endif 318 if((error = tsleep(&lfs_dirvcount, PCATCH|PUSER, "lfs_maxdirop", 0)) !=0) 319 return error; 320 } 321 } 322 ++fs->lfs_dirops; 323 fs->lfs_doifile = 1; 324 325 return 0; 326 } 327 328 #define SET_ENDOP(fs,vp,str) { \ 329 --(fs)->lfs_dirops; \ 330 if (!(fs)->lfs_dirops) { \ 331 if ((fs)->lfs_nadirop) \ 332 panic("no dirops but nadirop=%d\n", (fs)->lfs_nadirop);\ 333 wakeup(&(fs)->lfs_writer); \ 334 lfs_check((vp),LFS_UNUSED_LBN,0); \ 335 } \ 336 } 337 338 #define MARK_VNODE(dvp) do { \ 339 if (!((dvp)->v_flag & VDIROP)) { \ 340 lfs_vref(dvp); \ 341 ++lfs_dirvcount; \ 342 } \ 343 (dvp)->v_flag |= VDIROP; \ 344 if (!(VTOI(dvp)->i_flag & IN_ADIROP)) { \ 345 ++VTOI(dvp)->i_lfs->lfs_nadirop; \ 346 } \ 347 VTOI(dvp)->i_flag |= IN_ADIROP; \ 348 } while(0) 349 350 #define UNMARK_VNODE(vp) do { \ 351 if (VTOI(vp)->i_flag & IN_ADIROP) { \ 352 --VTOI(vp)->i_lfs->lfs_nadirop; \ 353 } \ 354 VTOI(vp)->i_flag &= ~IN_ADIROP; \ 355 } while(0) 356 357 int 358 lfs_symlink(v) 359 void *v; 360 { 361 struct vop_symlink_args /* { 362 struct vnode *a_dvp; 363 struct vnode **a_vpp; 364 struct componentname *a_cnp; 365 struct vattr *a_vap; 366 char *a_target; 367 } */ *ap = v; 368 int error; 369 370 if ((error = SET_DIROP(VTOI(ap->a_dvp)->i_lfs)) != 0) { 371 vput(ap->a_dvp); 372 return error; 373 } 374 MARK_VNODE(ap->a_dvp); 375 error = ufs_symlink(ap); 376 UNMARK_VNODE(ap->a_dvp); 377 if (error == 0) 378 UNMARK_VNODE(*(ap->a_vpp)); 379 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"symlink"); 380 return (error); 381 } 382 383 int 384 lfs_mknod(v) 385 void *v; 386 { 387 struct vop_mknod_args /* { 388 struct vnode *a_dvp; 389 struct vnode **a_vpp; 390 struct componentname *a_cnp; 391 struct vattr *a_vap; 392 } */ *ap = v; 393 struct vattr *vap = ap->a_vap; 394 struct vnode **vpp = ap->a_vpp; 395 struct inode *ip; 396 int error; 397 398 if ((error = SET_DIROP(VTOI(ap->a_dvp)->i_lfs)) != 0) { 399 vput(ap->a_dvp); 400 return error; 401 } 402 MARK_VNODE(ap->a_dvp); 403 error = ufs_makeinode(MAKEIMODE(vap->va_type, vap->va_mode), 404 ap->a_dvp, vpp, ap->a_cnp); 405 UNMARK_VNODE(ap->a_dvp); 406 if (error == 0) 407 UNMARK_VNODE(*(ap->a_vpp)); 408 409 /* Either way we're done with the dirop at this point */ 410 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"mknod"); 411 412 if (error) 413 return (error); 414 415 ip = VTOI(*vpp); 416 ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE; 417 if (vap->va_rdev != VNOVAL) { 418 /* 419 * Want to be able to use this to make badblock 420 * inodes, so don't truncate the dev number. 421 */ 422 #if 0 423 ip->i_ffs_rdev = ufs_rw32(vap->va_rdev, 424 UFS_MPNEEDSWAP((*vpp)->v_mount)); 425 #else 426 ip->i_ffs_rdev = vap->va_rdev; 427 #endif 428 } 429 /* 430 * Call fsync to write the vnode so that we don't have to deal with 431 * flushing it when it's marked VDIROP|VXLOCK. 432 * 433 * XXX KS - If we can't flush we also can't call vgone(), so must 434 * return. But, that leaves this vnode in limbo, also not good. 435 * Can this ever happen (barring hardware failure)? 436 */ 437 if ((error = VOP_FSYNC(*vpp, NOCRED, FSYNC_WAIT, curproc)) != 0) 438 return (error); 439 /* 440 * Remove inode so that it will be reloaded by VFS_VGET and 441 * checked to see if it is an alias of an existing entry in 442 * the inode cache. 443 */ 444 /* Used to be vput, but that causes us to call VOP_INACTIVE twice. */ 445 VOP_UNLOCK(*vpp,0); 446 lfs_vunref(*vpp); 447 (*vpp)->v_type = VNON; 448 vgone(*vpp); 449 *vpp = 0; 450 return (0); 451 } 452 453 int 454 lfs_create(v) 455 void *v; 456 { 457 struct vop_create_args /* { 458 struct vnode *a_dvp; 459 struct vnode **a_vpp; 460 struct componentname *a_cnp; 461 struct vattr *a_vap; 462 } */ *ap = v; 463 int error; 464 465 if((error = SET_DIROP(VTOI(ap->a_dvp)->i_lfs)) != 0) { 466 vput(ap->a_dvp); 467 return error; 468 } 469 MARK_VNODE(ap->a_dvp); 470 error = ufs_create(ap); 471 UNMARK_VNODE(ap->a_dvp); 472 if (error == 0) 473 UNMARK_VNODE(*(ap->a_vpp)); 474 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"create"); 475 return (error); 476 } 477 478 int 479 lfs_whiteout(v) 480 void *v; 481 { 482 struct vop_whiteout_args /* { 483 struct vnode *a_dvp; 484 struct componentname *a_cnp; 485 int a_flags; 486 } */ *ap = v; 487 int error; 488 489 if ((error = SET_DIROP(VTOI(ap->a_dvp)->i_lfs)) != 0) 490 /* XXX no unlock here? */ 491 return error; 492 MARK_VNODE(ap->a_dvp); 493 error = ufs_whiteout(ap); 494 UNMARK_VNODE(ap->a_dvp); 495 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"whiteout"); 496 return (error); 497 } 498 499 int 500 lfs_mkdir(v) 501 void *v; 502 { 503 struct vop_mkdir_args /* { 504 struct vnode *a_dvp; 505 struct vnode **a_vpp; 506 struct componentname *a_cnp; 507 struct vattr *a_vap; 508 } */ *ap = v; 509 int error; 510 511 if((error = SET_DIROP(VTOI(ap->a_dvp)->i_lfs)) != 0) { 512 vput(ap->a_dvp); 513 return error; 514 } 515 MARK_VNODE(ap->a_dvp); 516 error = ufs_mkdir(ap); 517 UNMARK_VNODE(ap->a_dvp); 518 if (error == 0) 519 UNMARK_VNODE(*(ap->a_vpp)); 520 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"mkdir"); 521 return (error); 522 } 523 524 int 525 lfs_remove(v) 526 void *v; 527 { 528 struct vop_remove_args /* { 529 struct vnode *a_dvp; 530 struct vnode *a_vp; 531 struct componentname *a_cnp; 532 } */ *ap = v; 533 struct vnode *dvp, *vp; 534 int error; 535 536 dvp = ap->a_dvp; 537 vp = ap->a_vp; 538 if ((error = SET_DIROP(VTOI(dvp)->i_lfs)) != 0) { 539 if (dvp == vp) 540 vrele(vp); 541 else 542 vput(vp); 543 vput(dvp); 544 return error; 545 } 546 MARK_VNODE(dvp); 547 MARK_VNODE(vp); 548 error = ufs_remove(ap); 549 UNMARK_VNODE(dvp); 550 UNMARK_VNODE(vp); 551 SET_ENDOP(VTOI(dvp)->i_lfs,dvp,"remove"); 552 return (error); 553 } 554 555 int 556 lfs_rmdir(v) 557 void *v; 558 { 559 struct vop_rmdir_args /* { 560 struct vnodeop_desc *a_desc; 561 struct vnode *a_dvp; 562 struct vnode *a_vp; 563 struct componentname *a_cnp; 564 } */ *ap = v; 565 int error; 566 567 if ((error = SET_DIROP(VTOI(ap->a_dvp)->i_lfs)) != 0) { 568 vrele(ap->a_dvp); 569 if (ap->a_vp->v_mountedhere != NULL) 570 VOP_UNLOCK(ap->a_dvp, 0); 571 vput(ap->a_vp); 572 return error; 573 } 574 MARK_VNODE(ap->a_dvp); 575 MARK_VNODE(ap->a_vp); 576 error = ufs_rmdir(ap); 577 UNMARK_VNODE(ap->a_dvp); 578 UNMARK_VNODE(ap->a_vp); 579 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"rmdir"); 580 return (error); 581 } 582 583 int 584 lfs_link(v) 585 void *v; 586 { 587 struct vop_link_args /* { 588 struct vnode *a_dvp; 589 struct vnode *a_vp; 590 struct componentname *a_cnp; 591 } */ *ap = v; 592 int error; 593 594 if ((error = SET_DIROP(VTOI(ap->a_dvp)->i_lfs)) != 0) { 595 vput(ap->a_dvp); 596 return error; 597 } 598 MARK_VNODE(ap->a_dvp); 599 error = ufs_link(ap); 600 UNMARK_VNODE(ap->a_dvp); 601 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"link"); 602 return (error); 603 } 604 605 int 606 lfs_rename(v) 607 void *v; 608 { 609 struct vop_rename_args /* { 610 struct vnode *a_fdvp; 611 struct vnode *a_fvp; 612 struct componentname *a_fcnp; 613 struct vnode *a_tdvp; 614 struct vnode *a_tvp; 615 struct componentname *a_tcnp; 616 } */ *ap = v; 617 struct vnode *tvp, *fvp, *tdvp, *fdvp; 618 int error; 619 struct lfs *fs; 620 621 fs = VTOI(ap->a_fdvp)->i_lfs; 622 tvp = ap->a_tvp; 623 tdvp = ap->a_tdvp; 624 fvp = ap->a_fvp; 625 fdvp = ap->a_fdvp; 626 627 /* 628 * Check for cross-device rename. 629 * If it is, we don't want to set dirops, just error out. 630 * (In particular note that MARK_VNODE(tdvp) will DTWT on 631 * a cross-device rename.) 632 * 633 * Copied from ufs_rename. 634 */ 635 if ((fvp->v_mount != tdvp->v_mount) || 636 (tvp && (fvp->v_mount != tvp->v_mount))) { 637 error = EXDEV; 638 goto errout; 639 } 640 if ((error = SET_DIROP(fs))!=0) 641 goto errout; 642 MARK_VNODE(fdvp); 643 MARK_VNODE(tdvp); 644 error = ufs_rename(ap); 645 UNMARK_VNODE(fdvp); 646 UNMARK_VNODE(tdvp); 647 SET_ENDOP(fs,fdvp,"rename"); 648 return (error); 649 650 errout: 651 VOP_ABORTOP(tdvp, ap->a_tcnp); /* XXX, why not in NFS? */ 652 if (tdvp == tvp) 653 vrele(tdvp); 654 else 655 vput(tdvp); 656 if (tvp) 657 vput(tvp); 658 VOP_ABORTOP(fdvp, ap->a_fcnp); /* XXX, why not in NFS? */ 659 vrele(fdvp); 660 vrele(fvp); 661 return (error); 662 } 663 664 /* XXX hack to avoid calling ITIMES in getattr */ 665 int 666 lfs_getattr(v) 667 void *v; 668 { 669 struct vop_getattr_args /* { 670 struct vnode *a_vp; 671 struct vattr *a_vap; 672 struct ucred *a_cred; 673 struct proc *a_p; 674 } */ *ap = v; 675 struct vnode *vp = ap->a_vp; 676 struct inode *ip = VTOI(vp); 677 struct vattr *vap = ap->a_vap; 678 /* 679 * Copy from inode table 680 */ 681 vap->va_fsid = ip->i_dev; 682 vap->va_fileid = ip->i_number; 683 vap->va_mode = ip->i_ffs_mode & ~IFMT; 684 vap->va_nlink = ip->i_ffs_nlink; 685 vap->va_uid = ip->i_ffs_uid; 686 vap->va_gid = ip->i_ffs_gid; 687 vap->va_rdev = (dev_t)ip->i_ffs_rdev; 688 vap->va_size = ip->i_ffs_size; 689 vap->va_atime.tv_sec = ip->i_ffs_atime; 690 vap->va_atime.tv_nsec = ip->i_ffs_atimensec; 691 vap->va_mtime.tv_sec = ip->i_ffs_mtime; 692 vap->va_mtime.tv_nsec = ip->i_ffs_mtimensec; 693 vap->va_ctime.tv_sec = ip->i_ffs_ctime; 694 vap->va_ctime.tv_nsec = ip->i_ffs_ctimensec; 695 vap->va_flags = ip->i_ffs_flags; 696 vap->va_gen = ip->i_ffs_gen; 697 /* this doesn't belong here */ 698 if (vp->v_type == VBLK) 699 vap->va_blocksize = BLKDEV_IOSIZE; 700 else if (vp->v_type == VCHR) 701 vap->va_blocksize = MAXBSIZE; 702 else 703 vap->va_blocksize = vp->v_mount->mnt_stat.f_iosize; 704 vap->va_bytes = dbtob((u_quad_t)ip->i_ffs_blocks); 705 vap->va_type = vp->v_type; 706 vap->va_filerev = ip->i_modrev; 707 return (0); 708 } 709 710 /* 711 * Close called 712 * 713 * XXX -- we were using ufs_close, but since it updates the 714 * times on the inode, we might need to bump the uinodes 715 * count. 716 */ 717 /* ARGSUSED */ 718 int 719 lfs_close(v) 720 void *v; 721 { 722 struct vop_close_args /* { 723 struct vnode *a_vp; 724 int a_fflag; 725 struct ucred *a_cred; 726 struct proc *a_p; 727 } */ *ap = v; 728 struct vnode *vp = ap->a_vp; 729 struct inode *ip = VTOI(vp); 730 int mod; 731 struct timespec ts; 732 733 simple_lock(&vp->v_interlock); 734 if (vp->v_usecount > 1) { 735 mod = ip->i_flag & IN_MODIFIED; 736 TIMEVAL_TO_TIMESPEC(&time, &ts); 737 LFS_ITIMES(ip, &ts, &ts, &ts); 738 if (!mod && ip->i_flag & IN_MODIFIED) 739 ip->i_lfs->lfs_uinodes++; 740 } 741 simple_unlock(&vp->v_interlock); 742 return (0); 743 } 744 745 /* 746 * Reclaim an inode so that it can be used for other purposes. 747 */ 748 int lfs_no_inactive = 0; 749 750 int 751 lfs_reclaim(v) 752 void *v; 753 { 754 struct vop_reclaim_args /* { 755 struct vnode *a_vp; 756 struct proc *a_p; 757 } */ *ap = v; 758 struct vnode *vp = ap->a_vp; 759 int error; 760 761 if ((error = ufs_reclaim(vp, ap->a_p))) 762 return (error); 763 pool_put(&lfs_inode_pool, vp->v_data); 764 vp->v_data = NULL; 765 return (0); 766 } 767
Indexes created Mon Sep 29 21:09:56 GMT 2025