lfs_vnops.c revision 1.46
1 /* $NetBSD: lfs_vnops.c,v 1.46 2000/10/14 23:22:14 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 off_t offlo; 286 off_t offhi; 287 struct proc *a_p; 288 } */ *ap = v; 289 290 return (VOP_UPDATE(ap->a_vp, NULL, NULL, 291 (ap->a_flags & FSYNC_WAIT) != 0 ? UPDATE_WAIT : 0)); 292 } 293 294 /* 295 * Take IN_ADIROP off, then call ufs_inactive. 296 */ 297 int 298 lfs_inactive(v) 299 void *v; 300 { 301 struct vop_inactive_args /* { 302 struct vnode *a_vp; 303 struct proc *a_p; 304 } */ *ap = v; 305 struct inode *ip = VTOI(ap->a_vp); 306 307 if (ip->i_flag & IN_ADIROP) 308 --ip->i_lfs->lfs_nadirop; 309 ip->i_flag &= ~IN_ADIROP; 310 return ufs_inactive(v); 311 } 312 313 /* 314 * These macros are used to bracket UFS directory ops, so that we can 315 * identify all the pages touched during directory ops which need to 316 * be ordered and flushed atomically, so that they may be recovered. 317 */ 318 /* 319 * XXX KS - Because we have to mark nodes VDIROP in order to prevent 320 * the cache from reclaiming them while a dirop is in progress, we must 321 * also manage the number of nodes so marked (otherwise we can run out). 322 * We do this by setting lfs_dirvcount to the number of marked vnodes; it 323 * is decremented during segment write, when VDIROP is taken off. 324 */ 325 #define SET_DIROP(vp) lfs_set_dirop(vp) 326 static int lfs_set_dirop __P((struct vnode *)); 327 extern int lfs_dirvcount; 328 329 static int 330 lfs_set_dirop(vp) 331 struct vnode *vp; 332 { 333 struct lfs *fs; 334 int error; 335 336 fs = VTOI(vp)->i_lfs; 337 /* 338 * We might need one directory block plus supporting indirect blocks, 339 * plus an inode block and ifile page for the new vnode. 340 */ 341 if ((error = lfs_reserve(fs, vp, fsbtodb(fs, NIADDR + 3))) != 0) 342 return (error); 343 if (fs->lfs_dirops == 0) 344 lfs_check(vp, LFS_UNUSED_LBN, 0); 345 while (fs->lfs_writer || lfs_dirvcount > LFS_MAXDIROP) { 346 if(fs->lfs_writer) 347 tsleep(&fs->lfs_dirops, PRIBIO + 1, "lfs_dirop", 0); 348 if(lfs_dirvcount > LFS_MAXDIROP && fs->lfs_dirops==0) { 349 ++fs->lfs_writer; 350 lfs_flush(fs, 0); 351 if(--fs->lfs_writer==0) 352 wakeup(&fs->lfs_dirops); 353 } 354 355 if(lfs_dirvcount > LFS_MAXDIROP) { 356 #ifdef DEBUG_LFS 357 printf("lfs_set_dirop: sleeping with dirops=%d, " 358 "dirvcount=%d\n", fs->lfs_dirops, 359 lfs_dirvcount); 360 #endif 361 if((error = tsleep(&lfs_dirvcount, PCATCH|PUSER, 362 "lfs_maxdirop", 0)) !=0) { 363 lfs_reserve(fs, vp, -fsbtodb(fs, NIADDR + 3)); 364 return error; 365 } 366 } 367 } 368 ++fs->lfs_dirops; 369 fs->lfs_doifile = 1; 370 371 /* Hold a reference so SET_ENDOP will be happy */ 372 lfs_vref(vp); 373 374 return 0; 375 } 376 377 #define SET_ENDOP(fs,vp,str) { \ 378 --(fs)->lfs_dirops; \ 379 if (!(fs)->lfs_dirops) { \ 380 if ((fs)->lfs_nadirop) { \ 381 panic("SET_ENDOP: %s: no dirops but nadirop=%d\n", \ 382 (str), (fs)->lfs_nadirop); \ 383 } \ 384 wakeup(&(fs)->lfs_writer); \ 385 lfs_check((vp),LFS_UNUSED_LBN,0); \ 386 } \ 387 lfs_reserve(fs, vp, -fsbtodb(fs, NIADDR + 3)); /* XXX */ \ 388 lfs_vunref(vp); \ 389 } 390 391 #define MARK_VNODE(dvp) do { \ 392 if (!((dvp)->v_flag & VDIROP)) { \ 393 (void)lfs_vref(dvp); \ 394 ++lfs_dirvcount; \ 395 } \ 396 (dvp)->v_flag |= VDIROP; \ 397 if (!(VTOI(dvp)->i_flag & IN_ADIROP)) { \ 398 ++VTOI(dvp)->i_lfs->lfs_nadirop; \ 399 } \ 400 VTOI(dvp)->i_flag |= IN_ADIROP; \ 401 } while(0) 402 403 #define UNMARK_VNODE(vp) lfs_unmark_vnode(vp) 404 405 void lfs_unmark_vnode(vp) 406 struct vnode *vp; 407 { 408 struct inode *ip; 409 410 ip = VTOI(vp); 411 412 if (ip->i_flag & IN_ADIROP) 413 --ip->i_lfs->lfs_nadirop; 414 ip->i_flag &= ~IN_ADIROP; 415 } 416 417 int 418 lfs_symlink(v) 419 void *v; 420 { 421 struct vop_symlink_args /* { 422 struct vnode *a_dvp; 423 struct vnode **a_vpp; 424 struct componentname *a_cnp; 425 struct vattr *a_vap; 426 char *a_target; 427 } */ *ap = v; 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_symlink(ap); 436 UNMARK_VNODE(ap->a_dvp); 437 if (*(ap->a_vpp)) 438 UNMARK_VNODE(*(ap->a_vpp)); 439 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"symlink"); 440 return (error); 441 } 442 443 int 444 lfs_mknod(v) 445 void *v; 446 { 447 struct vop_mknod_args /* { 448 struct vnode *a_dvp; 449 struct vnode **a_vpp; 450 struct componentname *a_cnp; 451 struct vattr *a_vap; 452 } */ *ap = v; 453 struct vattr *vap = ap->a_vap; 454 struct vnode **vpp = ap->a_vpp; 455 struct inode *ip; 456 int error; 457 458 if ((error = SET_DIROP(ap->a_dvp)) != 0) { 459 vput(ap->a_dvp); 460 return error; 461 } 462 MARK_VNODE(ap->a_dvp); 463 error = ufs_makeinode(MAKEIMODE(vap->va_type, vap->va_mode), 464 ap->a_dvp, vpp, ap->a_cnp); 465 UNMARK_VNODE(ap->a_dvp); 466 if (*(ap->a_vpp)) 467 UNMARK_VNODE(*(ap->a_vpp)); 468 469 /* Either way we're done with the dirop at this point */ 470 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"mknod"); 471 472 if (error) 473 return (error); 474 475 ip = VTOI(*vpp); 476 ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE; 477 if (vap->va_rdev != VNOVAL) { 478 /* 479 * Want to be able to use this to make badblock 480 * inodes, so don't truncate the dev number. 481 */ 482 #if 0 483 ip->i_ffs_rdev = ufs_rw32(vap->va_rdev, 484 UFS_MPNEEDSWAP((*vpp)->v_mount)); 485 #else 486 ip->i_ffs_rdev = vap->va_rdev; 487 #endif 488 } 489 /* 490 * Call fsync to write the vnode so that we don't have to deal with 491 * flushing it when it's marked VDIROP|VXLOCK. 492 * 493 * XXX KS - If we can't flush we also can't call vgone(), so must 494 * return. But, that leaves this vnode in limbo, also not good. 495 * Can this ever happen (barring hardware failure)? 496 */ 497 if ((error = VOP_FSYNC(*vpp, NOCRED, FSYNC_WAIT, 0, 0, curproc)) != 0) { 498 printf("Couldn't fsync in mknod (ino %d)---what do I do?\n", 499 VTOI(*vpp)->i_number); 500 return (error); 501 } 502 /* 503 * Remove vnode so that it will be reloaded by VFS_VGET and 504 * checked to see if it is an alias of an existing entry in 505 * the inode cache. 506 */ 507 /* Used to be vput, but that causes us to call VOP_INACTIVE twice. */ 508 VOP_UNLOCK(*vpp, 0); 509 lfs_vunref(*vpp); 510 (*vpp)->v_type = VNON; 511 vgone(*vpp); 512 *vpp = 0; 513 return (0); 514 } 515 516 int 517 lfs_create(v) 518 void *v; 519 { 520 struct vop_create_args /* { 521 struct vnode *a_dvp; 522 struct vnode **a_vpp; 523 struct componentname *a_cnp; 524 struct vattr *a_vap; 525 } */ *ap = v; 526 int error; 527 528 if((error = SET_DIROP(ap->a_dvp)) != 0) { 529 vput(ap->a_dvp); 530 return error; 531 } 532 MARK_VNODE(ap->a_dvp); 533 error = ufs_create(ap); 534 UNMARK_VNODE(ap->a_dvp); 535 if (*(ap->a_vpp)) 536 UNMARK_VNODE(*(ap->a_vpp)); 537 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"create"); 538 return (error); 539 } 540 541 int 542 lfs_whiteout(v) 543 void *v; 544 { 545 struct vop_whiteout_args /* { 546 struct vnode *a_dvp; 547 struct componentname *a_cnp; 548 int a_flags; 549 } */ *ap = v; 550 int error; 551 552 if ((error = SET_DIROP(ap->a_dvp)) != 0) 553 /* XXX no unlock here? */ 554 return error; 555 MARK_VNODE(ap->a_dvp); 556 error = ufs_whiteout(ap); 557 UNMARK_VNODE(ap->a_dvp); 558 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"whiteout"); 559 return (error); 560 } 561 562 int 563 lfs_mkdir(v) 564 void *v; 565 { 566 struct vop_mkdir_args /* { 567 struct vnode *a_dvp; 568 struct vnode **a_vpp; 569 struct componentname *a_cnp; 570 struct vattr *a_vap; 571 } */ *ap = v; 572 int error; 573 574 if((error = SET_DIROP(ap->a_dvp)) != 0) { 575 vput(ap->a_dvp); 576 return error; 577 } 578 MARK_VNODE(ap->a_dvp); 579 error = ufs_mkdir(ap); 580 UNMARK_VNODE(ap->a_dvp); 581 if (*(ap->a_vpp)) 582 UNMARK_VNODE(*(ap->a_vpp)); 583 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"mkdir"); 584 return (error); 585 } 586 587 int 588 lfs_remove(v) 589 void *v; 590 { 591 struct vop_remove_args /* { 592 struct vnode *a_dvp; 593 struct vnode *a_vp; 594 struct componentname *a_cnp; 595 } */ *ap = v; 596 struct vnode *dvp, *vp; 597 int error; 598 599 dvp = ap->a_dvp; 600 vp = ap->a_vp; 601 if ((error = SET_DIROP(dvp)) != 0) { 602 if (dvp == vp) 603 vrele(vp); 604 else 605 vput(vp); 606 vput(dvp); 607 return error; 608 } 609 MARK_VNODE(dvp); 610 MARK_VNODE(vp); 611 error = ufs_remove(ap); 612 UNMARK_VNODE(dvp); 613 UNMARK_VNODE(vp); 614 615 /* 616 * If ufs_remove failed, vp doesn't need to be VDIROP any more. 617 * If it succeeded, we can go ahead and wipe out vp, since 618 * its loss won't appear on disk until checkpoint, and by then 619 * dvp will have been written, completing the dirop. 620 */ 621 --lfs_dirvcount; 622 vp->v_flag &= ~VDIROP; 623 wakeup(&lfs_dirvcount); 624 vrele(vp); 625 626 SET_ENDOP(VTOI(dvp)->i_lfs,dvp,"remove"); 627 return (error); 628 } 629 630 int 631 lfs_rmdir(v) 632 void *v; 633 { 634 struct vop_rmdir_args /* { 635 struct vnodeop_desc *a_desc; 636 struct vnode *a_dvp; 637 struct vnode *a_vp; 638 struct componentname *a_cnp; 639 } */ *ap = v; 640 int error; 641 642 if ((error = SET_DIROP(ap->a_dvp)) != 0) { 643 vrele(ap->a_dvp); 644 if (ap->a_vp->v_mountedhere != NULL) 645 VOP_UNLOCK(ap->a_dvp, 0); 646 vput(ap->a_vp); 647 return error; 648 } 649 MARK_VNODE(ap->a_dvp); 650 MARK_VNODE(ap->a_vp); 651 error = ufs_rmdir(ap); 652 UNMARK_VNODE(ap->a_dvp); 653 UNMARK_VNODE(ap->a_vp); 654 655 /* 656 * If ufs_rmdir failed, vp doesn't need to be VDIROP any more. 657 * If it succeeded, we can go ahead and wipe out vp, since 658 * its loss won't appear on disk until checkpoint, and by then 659 * dvp will have been written, completing the dirop. 660 */ 661 --lfs_dirvcount; 662 ap->a_vp->v_flag &= ~VDIROP; 663 wakeup(&lfs_dirvcount); 664 vrele(ap->a_vp); 665 666 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"rmdir"); 667 return (error); 668 } 669 670 int 671 lfs_link(v) 672 void *v; 673 { 674 struct vop_link_args /* { 675 struct vnode *a_dvp; 676 struct vnode *a_vp; 677 struct componentname *a_cnp; 678 } */ *ap = v; 679 int error; 680 681 if ((error = SET_DIROP(ap->a_dvp)) != 0) { 682 vput(ap->a_dvp); 683 return error; 684 } 685 MARK_VNODE(ap->a_dvp); 686 error = ufs_link(ap); 687 UNMARK_VNODE(ap->a_dvp); 688 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"link"); 689 return (error); 690 } 691 692 int 693 lfs_rename(v) 694 void *v; 695 { 696 struct vop_rename_args /* { 697 struct vnode *a_fdvp; 698 struct vnode *a_fvp; 699 struct componentname *a_fcnp; 700 struct vnode *a_tdvp; 701 struct vnode *a_tvp; 702 struct componentname *a_tcnp; 703 } */ *ap = v; 704 struct vnode *tvp, *fvp, *tdvp, *fdvp; 705 int error; 706 struct lfs *fs; 707 708 fs = VTOI(ap->a_fdvp)->i_lfs; 709 tvp = ap->a_tvp; 710 tdvp = ap->a_tdvp; 711 fvp = ap->a_fvp; 712 fdvp = ap->a_fdvp; 713 714 /* 715 * Check for cross-device rename. 716 * If it is, we don't want to set dirops, just error out. 717 * (In particular note that MARK_VNODE(tdvp) will DTWT on 718 * a cross-device rename.) 719 * 720 * Copied from ufs_rename. 721 */ 722 if ((fvp->v_mount != tdvp->v_mount) || 723 (tvp && (fvp->v_mount != tvp->v_mount))) { 724 error = EXDEV; 725 goto errout; 726 } 727 if ((error = SET_DIROP(fdvp))!=0) 728 goto errout; 729 MARK_VNODE(fdvp); 730 MARK_VNODE(tdvp); 731 error = ufs_rename(ap); 732 UNMARK_VNODE(fdvp); 733 UNMARK_VNODE(tdvp); 734 SET_ENDOP(fs,fdvp,"rename"); 735 return (error); 736 737 errout: 738 VOP_ABORTOP(tdvp, ap->a_tcnp); /* XXX, why not in NFS? */ 739 if (tdvp == tvp) 740 vrele(tdvp); 741 else 742 vput(tdvp); 743 if (tvp) 744 vput(tvp); 745 VOP_ABORTOP(fdvp, ap->a_fcnp); /* XXX, why not in NFS? */ 746 vrele(fdvp); 747 vrele(fvp); 748 return (error); 749 } 750 751 /* XXX hack to avoid calling ITIMES in getattr */ 752 int 753 lfs_getattr(v) 754 void *v; 755 { 756 struct vop_getattr_args /* { 757 struct vnode *a_vp; 758 struct vattr *a_vap; 759 struct ucred *a_cred; 760 struct proc *a_p; 761 } */ *ap = v; 762 struct vnode *vp = ap->a_vp; 763 struct inode *ip = VTOI(vp); 764 struct vattr *vap = ap->a_vap; 765 /* 766 * Copy from inode table 767 */ 768 vap->va_fsid = ip->i_dev; 769 vap->va_fileid = ip->i_number; 770 vap->va_mode = ip->i_ffs_mode & ~IFMT; 771 vap->va_nlink = ip->i_ffs_nlink; 772 vap->va_uid = ip->i_ffs_uid; 773 vap->va_gid = ip->i_ffs_gid; 774 vap->va_rdev = (dev_t)ip->i_ffs_rdev; 775 vap->va_size = ip->i_ffs_size; 776 vap->va_atime.tv_sec = ip->i_ffs_atime; 777 vap->va_atime.tv_nsec = ip->i_ffs_atimensec; 778 vap->va_mtime.tv_sec = ip->i_ffs_mtime; 779 vap->va_mtime.tv_nsec = ip->i_ffs_mtimensec; 780 vap->va_ctime.tv_sec = ip->i_ffs_ctime; 781 vap->va_ctime.tv_nsec = ip->i_ffs_ctimensec; 782 vap->va_flags = ip->i_ffs_flags; 783 vap->va_gen = ip->i_ffs_gen; 784 /* this doesn't belong here */ 785 if (vp->v_type == VBLK) 786 vap->va_blocksize = BLKDEV_IOSIZE; 787 else if (vp->v_type == VCHR) 788 vap->va_blocksize = MAXBSIZE; 789 else 790 vap->va_blocksize = vp->v_mount->mnt_stat.f_iosize; 791 vap->va_bytes = dbtob((u_quad_t)ip->i_ffs_blocks); 792 vap->va_type = vp->v_type; 793 vap->va_filerev = ip->i_modrev; 794 return (0); 795 } 796 797 /* 798 * Close called 799 * 800 * XXX -- we were using ufs_close, but since it updates the 801 * times on the inode, we might need to bump the uinodes 802 * count. 803 */ 804 /* ARGSUSED */ 805 int 806 lfs_close(v) 807 void *v; 808 { 809 struct vop_close_args /* { 810 struct vnode *a_vp; 811 int a_fflag; 812 struct ucred *a_cred; 813 struct proc *a_p; 814 } */ *ap = v; 815 struct vnode *vp = ap->a_vp; 816 struct inode *ip = VTOI(vp); 817 struct timespec ts; 818 819 simple_lock(&vp->v_interlock); 820 if (vp->v_usecount > 1) { 821 TIMEVAL_TO_TIMESPEC(&time, &ts); 822 LFS_ITIMES(ip, &ts, &ts, &ts); 823 } 824 simple_unlock(&vp->v_interlock); 825 return (0); 826 } 827 828 /* 829 * Reclaim an inode so that it can be used for other purposes. 830 */ 831 int lfs_no_inactive = 0; 832 833 int 834 lfs_reclaim(v) 835 void *v; 836 { 837 struct vop_reclaim_args /* { 838 struct vnode *a_vp; 839 struct proc *a_p; 840 } */ *ap = v; 841 struct vnode *vp = ap->a_vp; 842 int error; 843 844 LFS_CLR_UINO(VTOI(vp), IN_ALLMOD); 845 if ((error = ufs_reclaim(vp, ap->a_p))) 846 return (error); 847 pool_put(&lfs_inode_pool, vp->v_data); 848 vp->v_data = NULL; 849 return (0); 850 } 851
Indexes created Mon Sep 29 21:09:56 GMT 2025