lfs_vnops.c revision 1.42
1 /* $NetBSD: lfs_vnops.c,v 1.42 2000/07/01 19:03:57 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 <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 #define LFS_READWRITE 259 #include <ufs/ufs/ufs_readwrite.c> 260 #undef LFS_READWRITE 261 262 /* 263 * Synch an open file. 264 */ 265 /* ARGSUSED */ 266 int 267 lfs_fsync(v) 268 void *v; 269 { 270 struct vop_fsync_args /* { 271 struct vnode *a_vp; 272 struct ucred *a_cred; 273 int a_flags; 274 struct proc *a_p; 275 } */ *ap = v; 276 277 return (VOP_UPDATE(ap->a_vp, NULL, NULL, 278 (ap->a_flags & FSYNC_WAIT) != 0 ? UPDATE_WAIT : 0)); 279 } 280 281 /* 282 * Take IN_ADIROP off, then call ufs_inactive. 283 */ 284 int 285 lfs_inactive(v) 286 void *v; 287 { 288 struct vop_inactive_args /* { 289 struct vnode *a_vp; 290 struct proc *a_p; 291 } */ *ap = v; 292 struct inode *ip = VTOI(ap->a_vp); 293 294 if (ip->i_flag & IN_ADIROP) 295 --ip->i_lfs->lfs_nadirop; 296 ip->i_flag &= ~IN_ADIROP; 297 return ufs_inactive(v); 298 } 299 300 /* 301 * These macros are used to bracket UFS directory ops, so that we can 302 * identify all the pages touched during directory ops which need to 303 * be ordered and flushed atomically, so that they may be recovered. 304 */ 305 /* 306 * XXX KS - Because we have to mark nodes VDIROP in order to prevent 307 * the cache from reclaiming them while a dirop is in progress, we must 308 * also manage the number of nodes so marked (otherwise we can run out). 309 * We do this by setting lfs_dirvcount to the number of marked vnodes; it 310 * is decremented during segment write, when VDIROP is taken off. 311 */ 312 #define SET_DIROP(vp) lfs_set_dirop(vp) 313 static int lfs_set_dirop __P((struct vnode *)); 314 extern int lfs_dirvcount; 315 316 static int lfs_set_dirop(vp) 317 struct vnode *vp; 318 { 319 struct lfs *fs; 320 int error; 321 322 fs = VTOI(vp)->i_lfs; 323 if (fs->lfs_dirops == 0) 324 lfs_check(vp, LFS_UNUSED_LBN, 0); 325 while (fs->lfs_writer || lfs_dirvcount > LFS_MAXDIROP) { 326 if(fs->lfs_writer) 327 tsleep(&fs->lfs_dirops, PRIBIO + 1, "lfs_dirop", 0); 328 if(lfs_dirvcount > LFS_MAXDIROP && fs->lfs_dirops==0) { 329 ++fs->lfs_writer; 330 lfs_flush(fs, 0); 331 if(--fs->lfs_writer==0) 332 wakeup(&fs->lfs_dirops); 333 } 334 335 if(lfs_dirvcount > LFS_MAXDIROP) { 336 #ifdef DEBUG_LFS 337 printf("lfs_set_dirop: sleeping with dirops=%d, dirvcount=%d\n",fs->lfs_dirops,lfs_dirvcount); 338 #endif 339 if((error = tsleep(&lfs_dirvcount, PCATCH|PUSER, "lfs_maxdirop", 0)) !=0) 340 return error; 341 } 342 } 343 ++fs->lfs_dirops; 344 fs->lfs_doifile = 1; 345 346 return 0; 347 } 348 349 #define SET_ENDOP(fs,vp,str) { \ 350 --(fs)->lfs_dirops; \ 351 if (!(fs)->lfs_dirops) { \ 352 if ((fs)->lfs_nadirop) { \ 353 panic("SET_ENDOP: %s: no dirops but nadirop=%d\n", \ 354 (str), (fs)->lfs_nadirop); \ 355 } \ 356 wakeup(&(fs)->lfs_writer); \ 357 lfs_check((vp),LFS_UNUSED_LBN,0); \ 358 } \ 359 } 360 361 #define MARK_VNODE(dvp) do { \ 362 if (!((dvp)->v_flag & VDIROP)) { \ 363 (void)lfs_vref(dvp); \ 364 ++lfs_dirvcount; \ 365 } \ 366 (dvp)->v_flag |= VDIROP; \ 367 if (!(VTOI(dvp)->i_flag & IN_ADIROP)) { \ 368 ++VTOI(dvp)->i_lfs->lfs_nadirop; \ 369 } \ 370 VTOI(dvp)->i_flag |= IN_ADIROP; \ 371 } while(0) 372 373 #define UNMARK_VNODE(vp) lfs_unmark_vnode(vp) 374 375 void lfs_unmark_vnode(vp) 376 struct vnode *vp; 377 { 378 struct inode *ip; 379 380 ip = VTOI(vp); 381 382 if (ip->i_flag & IN_ADIROP) 383 --ip->i_lfs->lfs_nadirop; 384 ip->i_flag &= ~IN_ADIROP; 385 } 386 387 int 388 lfs_symlink(v) 389 void *v; 390 { 391 struct vop_symlink_args /* { 392 struct vnode *a_dvp; 393 struct vnode **a_vpp; 394 struct componentname *a_cnp; 395 struct vattr *a_vap; 396 char *a_target; 397 } */ *ap = v; 398 int error; 399 400 if ((error = SET_DIROP(ap->a_dvp)) != 0) { 401 vput(ap->a_dvp); 402 return error; 403 } 404 MARK_VNODE(ap->a_dvp); 405 error = ufs_symlink(ap); 406 UNMARK_VNODE(ap->a_dvp); 407 if (*(ap->a_vpp)) 408 UNMARK_VNODE(*(ap->a_vpp)); 409 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"symlink"); 410 return (error); 411 } 412 413 int 414 lfs_mknod(v) 415 void *v; 416 { 417 struct vop_mknod_args /* { 418 struct vnode *a_dvp; 419 struct vnode **a_vpp; 420 struct componentname *a_cnp; 421 struct vattr *a_vap; 422 } */ *ap = v; 423 struct vattr *vap = ap->a_vap; 424 struct vnode **vpp = ap->a_vpp; 425 struct inode *ip; 426 int error; 427 428 if ((error = SET_DIROP(ap->a_dvp)) != 0) { 429 vput(ap->a_dvp); 430 return error; 431 } 432 MARK_VNODE(ap->a_dvp); 433 error = ufs_makeinode(MAKEIMODE(vap->va_type, vap->va_mode), 434 ap->a_dvp, vpp, ap->a_cnp); 435 UNMARK_VNODE(ap->a_dvp); 436 if (*(ap->a_vpp)) 437 UNMARK_VNODE(*(ap->a_vpp)); 438 439 /* Either way we're done with the dirop at this point */ 440 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"mknod"); 441 442 if (error) 443 return (error); 444 445 ip = VTOI(*vpp); 446 ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE; 447 if (vap->va_rdev != VNOVAL) { 448 /* 449 * Want to be able to use this to make badblock 450 * inodes, so don't truncate the dev number. 451 */ 452 #if 0 453 ip->i_ffs_rdev = ufs_rw32(vap->va_rdev, 454 UFS_MPNEEDSWAP((*vpp)->v_mount)); 455 #else 456 ip->i_ffs_rdev = vap->va_rdev; 457 #endif 458 } 459 /* 460 * Call fsync to write the vnode so that we don't have to deal with 461 * flushing it when it's marked VDIROP|VXLOCK. 462 * 463 * XXX KS - If we can't flush we also can't call vgone(), so must 464 * return. But, that leaves this vnode in limbo, also not good. 465 * Can this ever happen (barring hardware failure)? 466 */ 467 if ((error = VOP_FSYNC(*vpp, NOCRED, FSYNC_WAIT, curproc)) != 0) { 468 printf("Couldn't fsync in mknod (ino %d)---what do I do?\n", 469 VTOI(*vpp)->i_number); 470 return (error); 471 } 472 /* 473 * Remove vnode so that it will be reloaded by VFS_VGET and 474 * checked to see if it is an alias of an existing entry in 475 * the inode cache. 476 */ 477 /* Used to be vput, but that causes us to call VOP_INACTIVE twice. */ 478 VOP_UNLOCK(*vpp, 0); 479 lfs_vunref(*vpp); 480 (*vpp)->v_type = VNON; 481 vgone(*vpp); 482 *vpp = 0; 483 return (0); 484 } 485 486 int 487 lfs_create(v) 488 void *v; 489 { 490 struct vop_create_args /* { 491 struct vnode *a_dvp; 492 struct vnode **a_vpp; 493 struct componentname *a_cnp; 494 struct vattr *a_vap; 495 } */ *ap = v; 496 int error; 497 498 if((error = SET_DIROP(ap->a_dvp)) != 0) { 499 vput(ap->a_dvp); 500 return error; 501 } 502 MARK_VNODE(ap->a_dvp); 503 error = ufs_create(ap); 504 UNMARK_VNODE(ap->a_dvp); 505 if (*(ap->a_vpp)) 506 UNMARK_VNODE(*(ap->a_vpp)); 507 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"create"); 508 return (error); 509 } 510 511 int 512 lfs_whiteout(v) 513 void *v; 514 { 515 struct vop_whiteout_args /* { 516 struct vnode *a_dvp; 517 struct componentname *a_cnp; 518 int a_flags; 519 } */ *ap = v; 520 int error; 521 522 if ((error = SET_DIROP(ap->a_dvp)) != 0) 523 /* XXX no unlock here? */ 524 return error; 525 MARK_VNODE(ap->a_dvp); 526 error = ufs_whiteout(ap); 527 UNMARK_VNODE(ap->a_dvp); 528 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"whiteout"); 529 return (error); 530 } 531 532 int 533 lfs_mkdir(v) 534 void *v; 535 { 536 struct vop_mkdir_args /* { 537 struct vnode *a_dvp; 538 struct vnode **a_vpp; 539 struct componentname *a_cnp; 540 struct vattr *a_vap; 541 } */ *ap = v; 542 int error; 543 544 if((error = SET_DIROP(ap->a_dvp)) != 0) { 545 vput(ap->a_dvp); 546 return error; 547 } 548 MARK_VNODE(ap->a_dvp); 549 error = ufs_mkdir(ap); 550 UNMARK_VNODE(ap->a_dvp); 551 if (*(ap->a_vpp)) 552 UNMARK_VNODE(*(ap->a_vpp)); 553 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"mkdir"); 554 return (error); 555 } 556 557 int 558 lfs_remove(v) 559 void *v; 560 { 561 struct vop_remove_args /* { 562 struct vnode *a_dvp; 563 struct vnode *a_vp; 564 struct componentname *a_cnp; 565 } */ *ap = v; 566 struct vnode *dvp, *vp; 567 int error; 568 569 dvp = ap->a_dvp; 570 vp = ap->a_vp; 571 if ((error = SET_DIROP(dvp)) != 0) { 572 if (dvp == vp) 573 vrele(vp); 574 else 575 vput(vp); 576 vput(dvp); 577 return error; 578 } 579 MARK_VNODE(dvp); 580 MARK_VNODE(vp); 581 error = ufs_remove(ap); 582 UNMARK_VNODE(dvp); 583 UNMARK_VNODE(vp); 584 585 /* 586 * If ufs_remove failed, vp doesn't need to be VDIROP any more. 587 * If it succeeded, we can go ahead and wipe out vp, since 588 * its loss won't appear on disk until checkpoint, and by then 589 * dvp will have been written, completing the dirop. 590 */ 591 --lfs_dirvcount; 592 vp->v_flag &= ~VDIROP; 593 wakeup(&lfs_dirvcount); 594 vrele(vp); 595 596 SET_ENDOP(VTOI(dvp)->i_lfs,dvp,"remove"); 597 return (error); 598 } 599 600 int 601 lfs_rmdir(v) 602 void *v; 603 { 604 struct vop_rmdir_args /* { 605 struct vnodeop_desc *a_desc; 606 struct vnode *a_dvp; 607 struct vnode *a_vp; 608 struct componentname *a_cnp; 609 } */ *ap = v; 610 int error; 611 612 if ((error = SET_DIROP(ap->a_dvp)) != 0) { 613 vrele(ap->a_dvp); 614 if (ap->a_vp->v_mountedhere != NULL) 615 VOP_UNLOCK(ap->a_dvp, 0); 616 vput(ap->a_vp); 617 return error; 618 } 619 MARK_VNODE(ap->a_dvp); 620 MARK_VNODE(ap->a_vp); 621 error = ufs_rmdir(ap); 622 UNMARK_VNODE(ap->a_dvp); 623 UNMARK_VNODE(ap->a_vp); 624 625 /* 626 * If ufs_rmdir failed, vp doesn't need to be VDIROP any more. 627 * If it succeeded, we can go ahead and wipe out vp, since 628 * its loss won't appear on disk until checkpoint, and by then 629 * dvp will have been written, completing the dirop. 630 */ 631 --lfs_dirvcount; 632 ap->a_vp->v_flag &= ~VDIROP; 633 wakeup(&lfs_dirvcount); 634 vrele(ap->a_vp); 635 636 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"rmdir"); 637 return (error); 638 } 639 640 int 641 lfs_link(v) 642 void *v; 643 { 644 struct vop_link_args /* { 645 struct vnode *a_dvp; 646 struct vnode *a_vp; 647 struct componentname *a_cnp; 648 } */ *ap = v; 649 int error; 650 651 if ((error = SET_DIROP(ap->a_dvp)) != 0) { 652 vput(ap->a_dvp); 653 return error; 654 } 655 MARK_VNODE(ap->a_dvp); 656 error = ufs_link(ap); 657 UNMARK_VNODE(ap->a_dvp); 658 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"link"); 659 return (error); 660 } 661 662 int 663 lfs_rename(v) 664 void *v; 665 { 666 struct vop_rename_args /* { 667 struct vnode *a_fdvp; 668 struct vnode *a_fvp; 669 struct componentname *a_fcnp; 670 struct vnode *a_tdvp; 671 struct vnode *a_tvp; 672 struct componentname *a_tcnp; 673 } */ *ap = v; 674 struct vnode *tvp, *fvp, *tdvp, *fdvp; 675 int error; 676 struct lfs *fs; 677 678 fs = VTOI(ap->a_fdvp)->i_lfs; 679 tvp = ap->a_tvp; 680 tdvp = ap->a_tdvp; 681 fvp = ap->a_fvp; 682 fdvp = ap->a_fdvp; 683 684 /* 685 * Check for cross-device rename. 686 * If it is, we don't want to set dirops, just error out. 687 * (In particular note that MARK_VNODE(tdvp) will DTWT on 688 * a cross-device rename.) 689 * 690 * Copied from ufs_rename. 691 */ 692 if ((fvp->v_mount != tdvp->v_mount) || 693 (tvp && (fvp->v_mount != tvp->v_mount))) { 694 error = EXDEV; 695 goto errout; 696 } 697 if ((error = SET_DIROP(fdvp))!=0) 698 goto errout; 699 MARK_VNODE(fdvp); 700 MARK_VNODE(tdvp); 701 error = ufs_rename(ap); 702 UNMARK_VNODE(fdvp); 703 UNMARK_VNODE(tdvp); 704 SET_ENDOP(fs,fdvp,"rename"); 705 return (error); 706 707 errout: 708 VOP_ABORTOP(tdvp, ap->a_tcnp); /* XXX, why not in NFS? */ 709 if (tdvp == tvp) 710 vrele(tdvp); 711 else 712 vput(tdvp); 713 if (tvp) 714 vput(tvp); 715 VOP_ABORTOP(fdvp, ap->a_fcnp); /* XXX, why not in NFS? */ 716 vrele(fdvp); 717 vrele(fvp); 718 return (error); 719 } 720 721 /* XXX hack to avoid calling ITIMES in getattr */ 722 int 723 lfs_getattr(v) 724 void *v; 725 { 726 struct vop_getattr_args /* { 727 struct vnode *a_vp; 728 struct vattr *a_vap; 729 struct ucred *a_cred; 730 struct proc *a_p; 731 } */ *ap = v; 732 struct vnode *vp = ap->a_vp; 733 struct inode *ip = VTOI(vp); 734 struct vattr *vap = ap->a_vap; 735 /* 736 * Copy from inode table 737 */ 738 vap->va_fsid = ip->i_dev; 739 vap->va_fileid = ip->i_number; 740 vap->va_mode = ip->i_ffs_mode & ~IFMT; 741 vap->va_nlink = ip->i_ffs_nlink; 742 vap->va_uid = ip->i_ffs_uid; 743 vap->va_gid = ip->i_ffs_gid; 744 vap->va_rdev = (dev_t)ip->i_ffs_rdev; 745 vap->va_size = ip->i_ffs_size; 746 vap->va_atime.tv_sec = ip->i_ffs_atime; 747 vap->va_atime.tv_nsec = ip->i_ffs_atimensec; 748 vap->va_mtime.tv_sec = ip->i_ffs_mtime; 749 vap->va_mtime.tv_nsec = ip->i_ffs_mtimensec; 750 vap->va_ctime.tv_sec = ip->i_ffs_ctime; 751 vap->va_ctime.tv_nsec = ip->i_ffs_ctimensec; 752 vap->va_flags = ip->i_ffs_flags; 753 vap->va_gen = ip->i_ffs_gen; 754 /* this doesn't belong here */ 755 if (vp->v_type == VBLK) 756 vap->va_blocksize = BLKDEV_IOSIZE; 757 else if (vp->v_type == VCHR) 758 vap->va_blocksize = MAXBSIZE; 759 else 760 vap->va_blocksize = vp->v_mount->mnt_stat.f_iosize; 761 vap->va_bytes = dbtob((u_quad_t)ip->i_ffs_blocks); 762 vap->va_type = vp->v_type; 763 vap->va_filerev = ip->i_modrev; 764 return (0); 765 } 766 767 /* 768 * Close called 769 * 770 * XXX -- we were using ufs_close, but since it updates the 771 * times on the inode, we might need to bump the uinodes 772 * count. 773 */ 774 /* ARGSUSED */ 775 int 776 lfs_close(v) 777 void *v; 778 { 779 struct vop_close_args /* { 780 struct vnode *a_vp; 781 int a_fflag; 782 struct ucred *a_cred; 783 struct proc *a_p; 784 } */ *ap = v; 785 struct vnode *vp = ap->a_vp; 786 struct inode *ip = VTOI(vp); 787 int mod; 788 struct timespec ts; 789 790 simple_lock(&vp->v_interlock); 791 if (vp->v_usecount > 1) { 792 mod = ip->i_flag & (IN_MODIFIED | IN_ACCESSED); 793 TIMEVAL_TO_TIMESPEC(&time, &ts); 794 LFS_ITIMES(ip, &ts, &ts, &ts); 795 if (!mod && (ip->i_flag & (IN_MODIFIED | IN_ACCESSED))) 796 ip->i_lfs->lfs_uinodes++; 797 } 798 simple_unlock(&vp->v_interlock); 799 return (0); 800 } 801 802 /* 803 * Reclaim an inode so that it can be used for other purposes. 804 */ 805 int lfs_no_inactive = 0; 806 807 int 808 lfs_reclaim(v) 809 void *v; 810 { 811 struct vop_reclaim_args /* { 812 struct vnode *a_vp; 813 struct proc *a_p; 814 } */ *ap = v; 815 struct vnode *vp = ap->a_vp; 816 int error; 817 818 if ((error = ufs_reclaim(vp, ap->a_p))) 819 return (error); 820 pool_put(&lfs_inode_pool, vp->v_data); 821 vp->v_data = NULL; 822 return (0); 823 } 824
Indexes created Tue Sep 30 07:10:03 GMT 2025