lfs_vnops.c revision 1.40
1 /* $NetBSD: lfs_vnops.c,v 1.40 2000/06/27 20:57:18 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, lfs_inactive }, /* inactive */ 137 { &vop_reclaim_desc, lfs_reclaim }, /* reclaim */ 138 { &vop_lock_desc, ufs_lock }, /* lock */ 139 { &vop_unlock_desc, ufs_unlock }, /* unlock */ 140 { &vop_bmap_desc, ufs_bmap }, /* bmap */ 141 { &vop_strategy_desc, ufs_strategy }, /* strategy */ 142 { &vop_print_desc, ufs_print }, /* print */ 143 { &vop_islocked_desc, ufs_islocked }, /* islocked */ 144 { &vop_pathconf_desc, ufs_pathconf }, /* pathconf */ 145 { &vop_advlock_desc, ufs_advlock }, /* advlock */ 146 { &vop_blkatoff_desc, lfs_blkatoff }, /* blkatoff */ 147 { &vop_valloc_desc, lfs_valloc }, /* valloc */ 148 { &vop_balloc_desc, lfs_balloc }, /* balloc */ 149 { &vop_vfree_desc, lfs_vfree }, /* vfree */ 150 { &vop_truncate_desc, lfs_truncate }, /* truncate */ 151 { &vop_update_desc, lfs_update }, /* update */ 152 { &vop_bwrite_desc, lfs_bwrite }, /* bwrite */ 153 { (struct vnodeop_desc*)NULL, (int(*) __P((void *)))NULL } 154 }; 155 struct vnodeopv_desc lfs_vnodeop_opv_desc = 156 { &lfs_vnodeop_p, lfs_vnodeop_entries }; 157 158 int (**lfs_specop_p) __P((void *)); 159 struct vnodeopv_entry_desc lfs_specop_entries[] = { 160 { &vop_default_desc, vn_default_error }, 161 { &vop_lookup_desc, spec_lookup }, /* lookup */ 162 { &vop_create_desc, spec_create }, /* create */ 163 { &vop_mknod_desc, spec_mknod }, /* mknod */ 164 { &vop_open_desc, spec_open }, /* open */ 165 { &vop_close_desc, ufsspec_close }, /* close */ 166 { &vop_access_desc, ufs_access }, /* access */ 167 { &vop_getattr_desc, lfs_getattr }, /* getattr */ 168 { &vop_setattr_desc, ufs_setattr }, /* setattr */ 169 { &vop_read_desc, ufsspec_read }, /* read */ 170 { &vop_write_desc, ufsspec_write }, /* write */ 171 { &vop_lease_desc, spec_lease_check }, /* lease */ 172 { &vop_ioctl_desc, spec_ioctl }, /* ioctl */ 173 { &vop_fcntl_desc, ufs_fcntl }, /* fcntl */ 174 { &vop_poll_desc, spec_poll }, /* poll */ 175 { &vop_revoke_desc, spec_revoke }, /* revoke */ 176 { &vop_mmap_desc, spec_mmap }, /* mmap */ 177 { &vop_fsync_desc, spec_fsync }, /* fsync */ 178 { &vop_seek_desc, spec_seek }, /* seek */ 179 { &vop_remove_desc, spec_remove }, /* remove */ 180 { &vop_link_desc, spec_link }, /* link */ 181 { &vop_rename_desc, spec_rename }, /* rename */ 182 { &vop_mkdir_desc, spec_mkdir }, /* mkdir */ 183 { &vop_rmdir_desc, spec_rmdir }, /* rmdir */ 184 { &vop_symlink_desc, spec_symlink }, /* symlink */ 185 { &vop_readdir_desc, spec_readdir }, /* readdir */ 186 { &vop_readlink_desc, spec_readlink }, /* readlink */ 187 { &vop_abortop_desc, spec_abortop }, /* abortop */ 188 { &vop_inactive_desc, lfs_inactive }, /* inactive */ 189 { &vop_reclaim_desc, lfs_reclaim }, /* reclaim */ 190 { &vop_lock_desc, ufs_lock }, /* lock */ 191 { &vop_unlock_desc, ufs_unlock }, /* unlock */ 192 { &vop_bmap_desc, spec_bmap }, /* bmap */ 193 { &vop_strategy_desc, spec_strategy }, /* strategy */ 194 { &vop_print_desc, ufs_print }, /* print */ 195 { &vop_islocked_desc, ufs_islocked }, /* islocked */ 196 { &vop_pathconf_desc, spec_pathconf }, /* pathconf */ 197 { &vop_advlock_desc, spec_advlock }, /* advlock */ 198 { &vop_blkatoff_desc, spec_blkatoff }, /* blkatoff */ 199 { &vop_valloc_desc, spec_valloc }, /* valloc */ 200 { &vop_vfree_desc, lfs_vfree }, /* vfree */ 201 { &vop_truncate_desc, spec_truncate }, /* truncate */ 202 { &vop_update_desc, lfs_update }, /* update */ 203 { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ 204 { (struct vnodeop_desc*)NULL, (int(*) __P((void *)))NULL } 205 }; 206 struct vnodeopv_desc lfs_specop_opv_desc = 207 { &lfs_specop_p, lfs_specop_entries }; 208 209 int (**lfs_fifoop_p) __P((void *)); 210 struct vnodeopv_entry_desc lfs_fifoop_entries[] = { 211 { &vop_default_desc, vn_default_error }, 212 { &vop_lookup_desc, fifo_lookup }, /* lookup */ 213 { &vop_create_desc, fifo_create }, /* create */ 214 { &vop_mknod_desc, fifo_mknod }, /* mknod */ 215 { &vop_open_desc, fifo_open }, /* open */ 216 { &vop_close_desc, ufsfifo_close }, /* close */ 217 { &vop_access_desc, ufs_access }, /* access */ 218 { &vop_getattr_desc, lfs_getattr }, /* getattr */ 219 { &vop_setattr_desc, ufs_setattr }, /* setattr */ 220 { &vop_read_desc, ufsfifo_read }, /* read */ 221 { &vop_write_desc, ufsfifo_write }, /* write */ 222 { &vop_lease_desc, fifo_lease_check }, /* lease */ 223 { &vop_ioctl_desc, fifo_ioctl }, /* ioctl */ 224 { &vop_fcntl_desc, ufs_fcntl }, /* fcntl */ 225 { &vop_poll_desc, fifo_poll }, /* poll */ 226 { &vop_revoke_desc, fifo_revoke }, /* revoke */ 227 { &vop_mmap_desc, fifo_mmap }, /* mmap */ 228 { &vop_fsync_desc, fifo_fsync }, /* fsync */ 229 { &vop_seek_desc, fifo_seek }, /* seek */ 230 { &vop_remove_desc, fifo_remove }, /* remove */ 231 { &vop_link_desc, fifo_link }, /* link */ 232 { &vop_rename_desc, fifo_rename }, /* rename */ 233 { &vop_mkdir_desc, fifo_mkdir }, /* mkdir */ 234 { &vop_rmdir_desc, fifo_rmdir }, /* rmdir */ 235 { &vop_symlink_desc, fifo_symlink }, /* symlink */ 236 { &vop_readdir_desc, fifo_readdir }, /* readdir */ 237 { &vop_readlink_desc, fifo_readlink }, /* readlink */ 238 { &vop_abortop_desc, fifo_abortop }, /* abortop */ 239 { &vop_inactive_desc, lfs_inactive }, /* inactive */ 240 { &vop_reclaim_desc, lfs_reclaim }, /* reclaim */ 241 { &vop_lock_desc, ufs_lock }, /* lock */ 242 { &vop_unlock_desc, ufs_unlock }, /* unlock */ 243 { &vop_bmap_desc, fifo_bmap }, /* bmap */ 244 { &vop_strategy_desc, fifo_strategy }, /* strategy */ 245 { &vop_print_desc, ufs_print }, /* print */ 246 { &vop_islocked_desc, ufs_islocked }, /* islocked */ 247 { &vop_pathconf_desc, fifo_pathconf }, /* pathconf */ 248 { &vop_advlock_desc, fifo_advlock }, /* advlock */ 249 { &vop_blkatoff_desc, fifo_blkatoff }, /* blkatoff */ 250 { &vop_valloc_desc, fifo_valloc }, /* valloc */ 251 { &vop_vfree_desc, lfs_vfree }, /* vfree */ 252 { &vop_truncate_desc, fifo_truncate }, /* truncate */ 253 { &vop_update_desc, lfs_update }, /* update */ 254 { &vop_bwrite_desc, lfs_bwrite }, /* bwrite */ 255 { (struct vnodeop_desc*)NULL, (int(*) __P((void *)))NULL } 256 }; 257 struct vnodeopv_desc lfs_fifoop_opv_desc = 258 { &lfs_fifoop_p, lfs_fifoop_entries }; 259 260 #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 * Take IN_ADIROP off, then call ufs_inactive. 285 */ 286 int 287 lfs_inactive(v) 288 void *v; 289 { 290 struct vop_inactive_args /* { 291 struct vnode *a_vp; 292 struct proc *a_p; 293 } */ *ap = v; 294 struct inode *ip = VTOI(ap->a_vp); 295 296 if (ip->i_flag & IN_ADIROP) 297 --ip->i_lfs->lfs_nadirop; 298 ip->i_flag &= ~IN_ADIROP; 299 return ufs_inactive(v); 300 } 301 302 /* 303 * These macros are used to bracket UFS directory ops, so that we can 304 * identify all the pages touched during directory ops which need to 305 * be ordered and flushed atomically, so that they may be recovered. 306 */ 307 /* 308 * XXX KS - Because we have to mark nodes VDIROP in order to prevent 309 * the cache from reclaiming them while a dirop is in progress, we must 310 * also manage the number of nodes so marked (otherwise we can run out). 311 * We do this by setting lfs_dirvcount to the number of marked vnodes; it 312 * is decremented during segment write, when VDIROP is taken off. 313 */ 314 #define SET_DIROP(vp) lfs_set_dirop(vp) 315 static int lfs_set_dirop __P((struct vnode *)); 316 extern int lfs_dirvcount; 317 318 static int lfs_set_dirop(vp) 319 struct vnode *vp; 320 { 321 struct lfs *fs; 322 int error; 323 324 fs = VTOI(vp)->i_lfs; 325 if (fs->lfs_dirops == 0) 326 lfs_check(vp, LFS_UNUSED_LBN, 0); 327 while (fs->lfs_writer || lfs_dirvcount > LFS_MAXDIROP) { 328 if(fs->lfs_writer) 329 tsleep(&fs->lfs_dirops, PRIBIO + 1, "lfs_dirop", 0); 330 if(lfs_dirvcount > LFS_MAXDIROP && fs->lfs_dirops==0) { 331 ++fs->lfs_writer; 332 lfs_flush(fs, 0); 333 if(--fs->lfs_writer==0) 334 wakeup(&fs->lfs_dirops); 335 } 336 337 if(lfs_dirvcount > LFS_MAXDIROP) { 338 #ifdef DEBUG_LFS 339 printf("lfs_set_dirop: sleeping with dirops=%d, dirvcount=%d\n",fs->lfs_dirops,lfs_dirvcount); 340 #endif 341 if((error = tsleep(&lfs_dirvcount, PCATCH|PUSER, "lfs_maxdirop", 0)) !=0) 342 return error; 343 } 344 } 345 ++fs->lfs_dirops; 346 fs->lfs_doifile = 1; 347 348 return 0; 349 } 350 351 #define SET_ENDOP(fs,vp,str) { \ 352 --(fs)->lfs_dirops; \ 353 if (!(fs)->lfs_dirops) { \ 354 if ((fs)->lfs_nadirop) { \ 355 panic("SET_ENDOP: %s: no dirops but nadirop=%d\n", \ 356 (str), (fs)->lfs_nadirop); \ 357 } \ 358 wakeup(&(fs)->lfs_writer); \ 359 lfs_check((vp),LFS_UNUSED_LBN,0); \ 360 } \ 361 } 362 363 #define MARK_VNODE(dvp) do { \ 364 if (!((dvp)->v_flag & VDIROP)) { \ 365 (void)lfs_vref(dvp); \ 366 ++lfs_dirvcount; \ 367 } \ 368 (dvp)->v_flag |= VDIROP; \ 369 if (!(VTOI(dvp)->i_flag & IN_ADIROP)) { \ 370 ++VTOI(dvp)->i_lfs->lfs_nadirop; \ 371 } \ 372 VTOI(dvp)->i_flag |= IN_ADIROP; \ 373 } while(0) 374 375 #define UNMARK_VNODE(vp) lfs_unmark_vnode(vp) 376 377 void lfs_unmark_vnode(vp) 378 struct vnode *vp; 379 { 380 struct inode *ip; 381 382 ip = VTOI(vp); 383 384 if (ip->i_flag & IN_ADIROP) 385 --ip->i_lfs->lfs_nadirop; 386 ip->i_flag &= ~IN_ADIROP; 387 } 388 389 int 390 lfs_symlink(v) 391 void *v; 392 { 393 struct vop_symlink_args /* { 394 struct vnode *a_dvp; 395 struct vnode **a_vpp; 396 struct componentname *a_cnp; 397 struct vattr *a_vap; 398 char *a_target; 399 } */ *ap = v; 400 int error; 401 402 if ((error = SET_DIROP(ap->a_dvp)) != 0) { 403 vput(ap->a_dvp); 404 return error; 405 } 406 MARK_VNODE(ap->a_dvp); 407 error = ufs_symlink(ap); 408 UNMARK_VNODE(ap->a_dvp); 409 if (*(ap->a_vpp)) 410 UNMARK_VNODE(*(ap->a_vpp)); 411 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"symlink"); 412 return (error); 413 } 414 415 int 416 lfs_mknod(v) 417 void *v; 418 { 419 struct vop_mknod_args /* { 420 struct vnode *a_dvp; 421 struct vnode **a_vpp; 422 struct componentname *a_cnp; 423 struct vattr *a_vap; 424 } */ *ap = v; 425 struct vattr *vap = ap->a_vap; 426 struct vnode **vpp = ap->a_vpp; 427 struct inode *ip; 428 int error; 429 430 if ((error = SET_DIROP(ap->a_dvp)) != 0) { 431 vput(ap->a_dvp); 432 return error; 433 } 434 MARK_VNODE(ap->a_dvp); 435 error = ufs_makeinode(MAKEIMODE(vap->va_type, vap->va_mode), 436 ap->a_dvp, vpp, ap->a_cnp); 437 UNMARK_VNODE(ap->a_dvp); 438 if (*(ap->a_vpp)) 439 UNMARK_VNODE(*(ap->a_vpp)); 440 441 /* Either way we're done with the dirop at this point */ 442 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"mknod"); 443 444 if (error) 445 return (error); 446 447 ip = VTOI(*vpp); 448 ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE; 449 if (vap->va_rdev != VNOVAL) { 450 /* 451 * Want to be able to use this to make badblock 452 * inodes, so don't truncate the dev number. 453 */ 454 #if 0 455 ip->i_ffs_rdev = ufs_rw32(vap->va_rdev, 456 UFS_MPNEEDSWAP((*vpp)->v_mount)); 457 #else 458 ip->i_ffs_rdev = vap->va_rdev; 459 #endif 460 } 461 /* 462 * Call fsync to write the vnode so that we don't have to deal with 463 * flushing it when it's marked VDIROP|VXLOCK. 464 * 465 * XXX KS - If we can't flush we also can't call vgone(), so must 466 * return. But, that leaves this vnode in limbo, also not good. 467 * Can this ever happen (barring hardware failure)? 468 */ 469 if ((error = VOP_FSYNC(*vpp, NOCRED, FSYNC_WAIT, curproc)) != 0) { 470 printf("Couldn't fsync in mknod (ino %d)---what do I do?\n", 471 VTOI(*vpp)->i_number); 472 return (error); 473 } 474 /* 475 * Remove vnode so that it will be reloaded by VFS_VGET and 476 * checked to see if it is an alias of an existing entry in 477 * the inode cache. 478 */ 479 /* Used to be vput, but that causes us to call VOP_INACTIVE twice. */ 480 VOP_UNLOCK(*vpp, 0); 481 lfs_vunref(*vpp); 482 (*vpp)->v_type = VNON; 483 vgone(*vpp); 484 *vpp = 0; 485 return (0); 486 } 487 488 int 489 lfs_create(v) 490 void *v; 491 { 492 struct vop_create_args /* { 493 struct vnode *a_dvp; 494 struct vnode **a_vpp; 495 struct componentname *a_cnp; 496 struct vattr *a_vap; 497 } */ *ap = v; 498 int error; 499 500 if((error = SET_DIROP(ap->a_dvp)) != 0) { 501 vput(ap->a_dvp); 502 return error; 503 } 504 MARK_VNODE(ap->a_dvp); 505 error = ufs_create(ap); 506 UNMARK_VNODE(ap->a_dvp); 507 if (*(ap->a_vpp)) 508 UNMARK_VNODE(*(ap->a_vpp)); 509 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"create"); 510 return (error); 511 } 512 513 int 514 lfs_whiteout(v) 515 void *v; 516 { 517 struct vop_whiteout_args /* { 518 struct vnode *a_dvp; 519 struct componentname *a_cnp; 520 int a_flags; 521 } */ *ap = v; 522 int error; 523 524 if ((error = SET_DIROP(ap->a_dvp)) != 0) 525 /* XXX no unlock here? */ 526 return error; 527 MARK_VNODE(ap->a_dvp); 528 error = ufs_whiteout(ap); 529 UNMARK_VNODE(ap->a_dvp); 530 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"whiteout"); 531 return (error); 532 } 533 534 int 535 lfs_mkdir(v) 536 void *v; 537 { 538 struct vop_mkdir_args /* { 539 struct vnode *a_dvp; 540 struct vnode **a_vpp; 541 struct componentname *a_cnp; 542 struct vattr *a_vap; 543 } */ *ap = v; 544 int error; 545 546 if((error = SET_DIROP(ap->a_dvp)) != 0) { 547 vput(ap->a_dvp); 548 return error; 549 } 550 MARK_VNODE(ap->a_dvp); 551 error = ufs_mkdir(ap); 552 UNMARK_VNODE(ap->a_dvp); 553 if (*(ap->a_vpp)) 554 UNMARK_VNODE(*(ap->a_vpp)); 555 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"mkdir"); 556 return (error); 557 } 558 559 int 560 lfs_remove(v) 561 void *v; 562 { 563 struct vop_remove_args /* { 564 struct vnode *a_dvp; 565 struct vnode *a_vp; 566 struct componentname *a_cnp; 567 } */ *ap = v; 568 struct vnode *dvp, *vp; 569 int error; 570 571 dvp = ap->a_dvp; 572 vp = ap->a_vp; 573 if ((error = SET_DIROP(dvp)) != 0) { 574 if (dvp == vp) 575 vrele(vp); 576 else 577 vput(vp); 578 vput(dvp); 579 return error; 580 } 581 MARK_VNODE(dvp); 582 MARK_VNODE(vp); 583 error = ufs_remove(ap); 584 UNMARK_VNODE(dvp); 585 UNMARK_VNODE(vp); 586 SET_ENDOP(VTOI(dvp)->i_lfs,dvp,"remove"); 587 588 /* 589 * If ufs_remove failed, vp doesn't need to be VDIROP any more. 590 * If it succeeded, we can go ahead and wipe out vp, since 591 * its loss won't appear on disk until checkpoint, and by then 592 * dvp will have been written, completing the dirop. 593 */ 594 --lfs_dirvcount; 595 vp->v_flag &= ~VDIROP; 596 wakeup(&lfs_dirvcount); 597 vrele(vp); 598 599 return (error); 600 } 601 602 int 603 lfs_rmdir(v) 604 void *v; 605 { 606 struct vop_rmdir_args /* { 607 struct vnodeop_desc *a_desc; 608 struct vnode *a_dvp; 609 struct vnode *a_vp; 610 struct componentname *a_cnp; 611 } */ *ap = v; 612 int error; 613 614 if ((error = SET_DIROP(ap->a_dvp)) != 0) { 615 vrele(ap->a_dvp); 616 if (ap->a_vp->v_mountedhere != NULL) 617 VOP_UNLOCK(ap->a_dvp, 0); 618 vput(ap->a_vp); 619 return error; 620 } 621 MARK_VNODE(ap->a_dvp); 622 MARK_VNODE(ap->a_vp); 623 error = ufs_rmdir(ap); 624 UNMARK_VNODE(ap->a_dvp); 625 UNMARK_VNODE(ap->a_vp); 626 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"rmdir"); 627 628 /* 629 * If ufs_rmdir failed, vp doesn't need to be VDIROP any more. 630 * If it succeeded, we can go ahead and wipe out vp, since 631 * its loss won't appear on disk until checkpoint, and by then 632 * dvp will have been written, completing the dirop. 633 */ 634 --lfs_dirvcount; 635 ap->a_vp->v_flag &= ~VDIROP; 636 wakeup(&lfs_dirvcount); 637 vrele(ap->a_vp); 638 639 return (error); 640 } 641 642 int 643 lfs_link(v) 644 void *v; 645 { 646 struct vop_link_args /* { 647 struct vnode *a_dvp; 648 struct vnode *a_vp; 649 struct componentname *a_cnp; 650 } */ *ap = v; 651 int error; 652 653 if ((error = SET_DIROP(ap->a_dvp)) != 0) { 654 vput(ap->a_dvp); 655 return error; 656 } 657 MARK_VNODE(ap->a_dvp); 658 error = ufs_link(ap); 659 UNMARK_VNODE(ap->a_dvp); 660 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"link"); 661 return (error); 662 } 663 664 int 665 lfs_rename(v) 666 void *v; 667 { 668 struct vop_rename_args /* { 669 struct vnode *a_fdvp; 670 struct vnode *a_fvp; 671 struct componentname *a_fcnp; 672 struct vnode *a_tdvp; 673 struct vnode *a_tvp; 674 struct componentname *a_tcnp; 675 } */ *ap = v; 676 struct vnode *tvp, *fvp, *tdvp, *fdvp; 677 int error; 678 struct lfs *fs; 679 680 fs = VTOI(ap->a_fdvp)->i_lfs; 681 tvp = ap->a_tvp; 682 tdvp = ap->a_tdvp; 683 fvp = ap->a_fvp; 684 fdvp = ap->a_fdvp; 685 686 /* 687 * Check for cross-device rename. 688 * If it is, we don't want to set dirops, just error out. 689 * (In particular note that MARK_VNODE(tdvp) will DTWT on 690 * a cross-device rename.) 691 * 692 * Copied from ufs_rename. 693 */ 694 if ((fvp->v_mount != tdvp->v_mount) || 695 (tvp && (fvp->v_mount != tvp->v_mount))) { 696 error = EXDEV; 697 goto errout; 698 } 699 if ((error = SET_DIROP(fdvp))!=0) 700 goto errout; 701 MARK_VNODE(fdvp); 702 MARK_VNODE(tdvp); 703 error = ufs_rename(ap); 704 UNMARK_VNODE(fdvp); 705 UNMARK_VNODE(tdvp); 706 SET_ENDOP(fs,fdvp,"rename"); 707 return (error); 708 709 errout: 710 VOP_ABORTOP(tdvp, ap->a_tcnp); /* XXX, why not in NFS? */ 711 if (tdvp == tvp) 712 vrele(tdvp); 713 else 714 vput(tdvp); 715 if (tvp) 716 vput(tvp); 717 VOP_ABORTOP(fdvp, ap->a_fcnp); /* XXX, why not in NFS? */ 718 vrele(fdvp); 719 vrele(fvp); 720 return (error); 721 } 722 723 /* XXX hack to avoid calling ITIMES in getattr */ 724 int 725 lfs_getattr(v) 726 void *v; 727 { 728 struct vop_getattr_args /* { 729 struct vnode *a_vp; 730 struct vattr *a_vap; 731 struct ucred *a_cred; 732 struct proc *a_p; 733 } */ *ap = v; 734 struct vnode *vp = ap->a_vp; 735 struct inode *ip = VTOI(vp); 736 struct vattr *vap = ap->a_vap; 737 /* 738 * Copy from inode table 739 */ 740 vap->va_fsid = ip->i_dev; 741 vap->va_fileid = ip->i_number; 742 vap->va_mode = ip->i_ffs_mode & ~IFMT; 743 vap->va_nlink = ip->i_ffs_nlink; 744 vap->va_uid = ip->i_ffs_uid; 745 vap->va_gid = ip->i_ffs_gid; 746 vap->va_rdev = (dev_t)ip->i_ffs_rdev; 747 vap->va_size = ip->i_ffs_size; 748 vap->va_atime.tv_sec = ip->i_ffs_atime; 749 vap->va_atime.tv_nsec = ip->i_ffs_atimensec; 750 vap->va_mtime.tv_sec = ip->i_ffs_mtime; 751 vap->va_mtime.tv_nsec = ip->i_ffs_mtimensec; 752 vap->va_ctime.tv_sec = ip->i_ffs_ctime; 753 vap->va_ctime.tv_nsec = ip->i_ffs_ctimensec; 754 vap->va_flags = ip->i_ffs_flags; 755 vap->va_gen = ip->i_ffs_gen; 756 /* this doesn't belong here */ 757 if (vp->v_type == VBLK) 758 vap->va_blocksize = BLKDEV_IOSIZE; 759 else if (vp->v_type == VCHR) 760 vap->va_blocksize = MAXBSIZE; 761 else 762 vap->va_blocksize = vp->v_mount->mnt_stat.f_iosize; 763 vap->va_bytes = dbtob((u_quad_t)ip->i_ffs_blocks); 764 vap->va_type = vp->v_type; 765 vap->va_filerev = ip->i_modrev; 766 return (0); 767 } 768 769 /* 770 * Close called 771 * 772 * XXX -- we were using ufs_close, but since it updates the 773 * times on the inode, we might need to bump the uinodes 774 * count. 775 */ 776 /* ARGSUSED */ 777 int 778 lfs_close(v) 779 void *v; 780 { 781 struct vop_close_args /* { 782 struct vnode *a_vp; 783 int a_fflag; 784 struct ucred *a_cred; 785 struct proc *a_p; 786 } */ *ap = v; 787 struct vnode *vp = ap->a_vp; 788 struct inode *ip = VTOI(vp); 789 int mod; 790 struct timespec ts; 791 792 simple_lock(&vp->v_interlock); 793 if (vp->v_usecount > 1) { 794 mod = ip->i_flag & (IN_MODIFIED | IN_ACCESSED); 795 TIMEVAL_TO_TIMESPEC(&time, &ts); 796 LFS_ITIMES(ip, &ts, &ts, &ts); 797 if (!mod && (ip->i_flag & (IN_MODIFIED | IN_ACCESSED))) 798 ip->i_lfs->lfs_uinodes++; 799 } 800 simple_unlock(&vp->v_interlock); 801 return (0); 802 } 803 804 /* 805 * Reclaim an inode so that it can be used for other purposes. 806 */ 807 int lfs_no_inactive = 0; 808 809 int 810 lfs_reclaim(v) 811 void *v; 812 { 813 struct vop_reclaim_args /* { 814 struct vnode *a_vp; 815 struct proc *a_p; 816 } */ *ap = v; 817 struct vnode *vp = ap->a_vp; 818 int error; 819 820 if ((error = ufs_reclaim(vp, ap->a_p))) 821 return (error); 822 pool_put(&lfs_inode_pool, vp->v_data); 823 vp->v_data = NULL; 824 return (0); 825 } 826
Indexes created Tue Sep 30 11:09:46 GMT 2025