lfs_vnops.c revision 1.56
1 /* $NetBSD: lfs_vnops.c,v 1.56 2001/09/22 22:35:20 sommerfeld 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)(void *); 104 const 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 #if 0 /* XXX until LFS is fixed */ 123 { &vop_mmap_desc, ufs_mmap }, /* mmap */ 124 #endif 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 { NULL, NULL } 154 }; 155 const struct vnodeopv_desc lfs_vnodeop_opv_desc = 156 { &lfs_vnodeop_p, lfs_vnodeop_entries }; 157 158 int (**lfs_specop_p)(void *); 159 const 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 { &vop_getpages_desc, spec_getpages }, /* getpages */ 205 { &vop_putpages_desc, spec_putpages }, /* putpages */ 206 { NULL, NULL } 207 }; 208 const struct vnodeopv_desc lfs_specop_opv_desc = 209 { &lfs_specop_p, lfs_specop_entries }; 210 211 int (**lfs_fifoop_p)(void *); 212 const struct vnodeopv_entry_desc lfs_fifoop_entries[] = { 213 { &vop_default_desc, vn_default_error }, 214 { &vop_lookup_desc, fifo_lookup }, /* lookup */ 215 { &vop_create_desc, fifo_create }, /* create */ 216 { &vop_mknod_desc, fifo_mknod }, /* mknod */ 217 { &vop_open_desc, fifo_open }, /* open */ 218 { &vop_close_desc, ufsfifo_close }, /* close */ 219 { &vop_access_desc, ufs_access }, /* access */ 220 { &vop_getattr_desc, lfs_getattr }, /* getattr */ 221 { &vop_setattr_desc, ufs_setattr }, /* setattr */ 222 { &vop_read_desc, ufsfifo_read }, /* read */ 223 { &vop_write_desc, ufsfifo_write }, /* write */ 224 { &vop_lease_desc, fifo_lease_check }, /* lease */ 225 { &vop_ioctl_desc, fifo_ioctl }, /* ioctl */ 226 { &vop_fcntl_desc, ufs_fcntl }, /* fcntl */ 227 { &vop_poll_desc, fifo_poll }, /* poll */ 228 { &vop_revoke_desc, fifo_revoke }, /* revoke */ 229 { &vop_mmap_desc, fifo_mmap }, /* mmap */ 230 { &vop_fsync_desc, fifo_fsync }, /* fsync */ 231 { &vop_seek_desc, fifo_seek }, /* seek */ 232 { &vop_remove_desc, fifo_remove }, /* remove */ 233 { &vop_link_desc, fifo_link }, /* link */ 234 { &vop_rename_desc, fifo_rename }, /* rename */ 235 { &vop_mkdir_desc, fifo_mkdir }, /* mkdir */ 236 { &vop_rmdir_desc, fifo_rmdir }, /* rmdir */ 237 { &vop_symlink_desc, fifo_symlink }, /* symlink */ 238 { &vop_readdir_desc, fifo_readdir }, /* readdir */ 239 { &vop_readlink_desc, fifo_readlink }, /* readlink */ 240 { &vop_abortop_desc, fifo_abortop }, /* abortop */ 241 { &vop_inactive_desc, lfs_inactive }, /* inactive */ 242 { &vop_reclaim_desc, lfs_reclaim }, /* reclaim */ 243 { &vop_lock_desc, ufs_lock }, /* lock */ 244 { &vop_unlock_desc, ufs_unlock }, /* unlock */ 245 { &vop_bmap_desc, fifo_bmap }, /* bmap */ 246 { &vop_strategy_desc, fifo_strategy }, /* strategy */ 247 { &vop_print_desc, ufs_print }, /* print */ 248 { &vop_islocked_desc, ufs_islocked }, /* islocked */ 249 { &vop_pathconf_desc, fifo_pathconf }, /* pathconf */ 250 { &vop_advlock_desc, fifo_advlock }, /* advlock */ 251 { &vop_blkatoff_desc, fifo_blkatoff }, /* blkatoff */ 252 { &vop_valloc_desc, fifo_valloc }, /* valloc */ 253 { &vop_vfree_desc, lfs_vfree }, /* vfree */ 254 { &vop_truncate_desc, fifo_truncate }, /* truncate */ 255 { &vop_update_desc, lfs_update }, /* update */ 256 { &vop_bwrite_desc, lfs_bwrite }, /* bwrite */ 257 { &vop_putpages_desc, fifo_putpages }, /* putpages */ 258 { NULL, NULL } 259 }; 260 const struct vnodeopv_desc lfs_fifoop_opv_desc = 261 { &lfs_fifoop_p, lfs_fifoop_entries }; 262 263 /* 264 * A function version of LFS_ITIMES, for the UFS functions which call ITIMES 265 */ 266 void 267 lfs_itimes(struct inode *ip, struct timespec *acc, struct timespec *mod, struct timespec *cre) 268 { 269 LFS_ITIMES(ip, acc, mod, cre); 270 } 271 272 #define LFS_READWRITE 273 #include <ufs/ufs/ufs_readwrite.c> 274 #undef LFS_READWRITE 275 276 /* 277 * Synch an open file. 278 */ 279 /* ARGSUSED */ 280 int 281 lfs_fsync(void *v) 282 { 283 struct vop_fsync_args /* { 284 struct vnode *a_vp; 285 struct ucred *a_cred; 286 int a_flags; 287 off_t offlo; 288 off_t offhi; 289 struct proc *a_p; 290 } */ *ap = v; 291 292 /* Ignore the trickle syncer */ 293 if (ap->a_flags & FSYNC_LAZY) 294 return 0; 295 296 return (VOP_UPDATE(ap->a_vp, NULL, NULL, 297 (ap->a_flags & FSYNC_WAIT) != 0 ? UPDATE_WAIT : 0)); 298 } 299 300 /* 301 * Take IN_ADIROP off, then call ufs_inactive. 302 */ 303 int 304 lfs_inactive(void *v) 305 { 306 struct vop_inactive_args /* { 307 struct vnode *a_vp; 308 struct proc *a_p; 309 } */ *ap = v; 310 struct inode *ip = VTOI(ap->a_vp); 311 312 if (ip->i_flag & IN_ADIROP) 313 --ip->i_lfs->lfs_nadirop; 314 ip->i_flag &= ~IN_ADIROP; 315 return ufs_inactive(v); 316 } 317 318 /* 319 * These macros are used to bracket UFS directory ops, so that we can 320 * identify all the pages touched during directory ops which need to 321 * be ordered and flushed atomically, so that they may be recovered. 322 */ 323 /* 324 * XXX KS - Because we have to mark nodes VDIROP in order to prevent 325 * the cache from reclaiming them while a dirop is in progress, we must 326 * also manage the number of nodes so marked (otherwise we can run out). 327 * We do this by setting lfs_dirvcount to the number of marked vnodes; it 328 * is decremented during segment write, when VDIROP is taken off. 329 */ 330 #define SET_DIROP(vp) lfs_set_dirop(vp) 331 static int lfs_set_dirop(struct vnode *); 332 extern int lfs_dirvcount; 333 334 static int 335 lfs_set_dirop(struct vnode *vp) 336 { 337 struct lfs *fs; 338 int error; 339 340 fs = VTOI(vp)->i_lfs; 341 /* 342 * We might need one directory block plus supporting indirect blocks, 343 * plus an inode block and ifile page for the new vnode. 344 */ 345 if ((error = lfs_reserve(fs, vp, btofsb(fs, (NIADDR + 3) << fs->lfs_bshift))) != 0) 346 return (error); 347 if (fs->lfs_dirops == 0) 348 lfs_check(vp, LFS_UNUSED_LBN, 0); 349 while (fs->lfs_writer || lfs_dirvcount > LFS_MAXDIROP) { 350 if(fs->lfs_writer) 351 tsleep(&fs->lfs_dirops, PRIBIO + 1, "lfs_dirop", 0); 352 if(lfs_dirvcount > LFS_MAXDIROP && fs->lfs_dirops==0) { 353 ++fs->lfs_writer; 354 lfs_flush(fs, 0); 355 if(--fs->lfs_writer==0) 356 wakeup(&fs->lfs_dirops); 357 } 358 359 if(lfs_dirvcount > LFS_MAXDIROP) { 360 #ifdef DEBUG_LFS 361 printf("lfs_set_dirop: sleeping with dirops=%d, " 362 "dirvcount=%d\n", fs->lfs_dirops, 363 lfs_dirvcount); 364 #endif 365 if((error = tsleep(&lfs_dirvcount, PCATCH|PUSER, 366 "lfs_maxdirop", 0)) !=0) { 367 lfs_reserve(fs, vp, -btofsb(fs, (NIADDR + 3) << fs->lfs_bshift)); 368 return error; 369 } 370 } 371 } 372 ++fs->lfs_dirops; 373 fs->lfs_doifile = 1; 374 375 /* Hold a reference so SET_ENDOP will be happy */ 376 lfs_vref(vp); 377 378 return 0; 379 } 380 381 #define SET_ENDOP(fs,vp,str) { \ 382 --(fs)->lfs_dirops; \ 383 if (!(fs)->lfs_dirops) { \ 384 if ((fs)->lfs_nadirop) { \ 385 panic("SET_ENDOP: %s: no dirops but nadirop=%d\n", \ 386 (str), (fs)->lfs_nadirop); \ 387 } \ 388 wakeup(&(fs)->lfs_writer); \ 389 lfs_check((vp),LFS_UNUSED_LBN,0); \ 390 } \ 391 lfs_reserve((fs), vp, -btofsb((fs), (NIADDR + 3) << (fs)->lfs_bshift)); /* XXX */ \ 392 lfs_vunref(vp); \ 393 } 394 395 #define MARK_VNODE(dvp) do { \ 396 if (!((dvp)->v_flag & VDIROP)) { \ 397 (void)lfs_vref(dvp); \ 398 ++lfs_dirvcount; \ 399 } \ 400 (dvp)->v_flag |= VDIROP; \ 401 if (!(VTOI(dvp)->i_flag & IN_ADIROP)) { \ 402 ++VTOI(dvp)->i_lfs->lfs_nadirop; \ 403 } \ 404 VTOI(dvp)->i_flag |= IN_ADIROP; \ 405 } while(0) 406 407 #define UNMARK_VNODE(vp) lfs_unmark_vnode(vp) 408 409 void lfs_unmark_vnode(struct vnode *vp) 410 { 411 struct inode *ip; 412 413 ip = VTOI(vp); 414 415 if (ip->i_flag & IN_ADIROP) 416 --ip->i_lfs->lfs_nadirop; 417 ip->i_flag &= ~IN_ADIROP; 418 } 419 420 int 421 lfs_symlink(void *v) 422 { 423 struct vop_symlink_args /* { 424 struct vnode *a_dvp; 425 struct vnode **a_vpp; 426 struct componentname *a_cnp; 427 struct vattr *a_vap; 428 char *a_target; 429 } */ *ap = v; 430 int error; 431 432 if ((error = SET_DIROP(ap->a_dvp)) != 0) { 433 vput(ap->a_dvp); 434 return error; 435 } 436 MARK_VNODE(ap->a_dvp); 437 error = ufs_symlink(ap); 438 UNMARK_VNODE(ap->a_dvp); 439 if (*(ap->a_vpp)) 440 UNMARK_VNODE(*(ap->a_vpp)); 441 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"symlink"); 442 return (error); 443 } 444 445 int 446 lfs_mknod(void *v) 447 { 448 struct vop_mknod_args /* { 449 struct vnode *a_dvp; 450 struct vnode **a_vpp; 451 struct componentname *a_cnp; 452 struct vattr *a_vap; 453 } */ *ap = v; 454 struct vattr *vap = ap->a_vap; 455 struct vnode **vpp = ap->a_vpp; 456 struct inode *ip; 457 int error; 458 struct mount *mp; 459 ino_t ino; 460 461 if ((error = SET_DIROP(ap->a_dvp)) != 0) { 462 vput(ap->a_dvp); 463 return error; 464 } 465 MARK_VNODE(ap->a_dvp); 466 error = ufs_makeinode(MAKEIMODE(vap->va_type, vap->va_mode), 467 ap->a_dvp, vpp, ap->a_cnp); 468 UNMARK_VNODE(ap->a_dvp); 469 if (*(ap->a_vpp)) 470 UNMARK_VNODE(*(ap->a_vpp)); 471 472 /* Either way we're done with the dirop at this point */ 473 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"mknod"); 474 475 if (error) 476 return (error); 477 478 ip = VTOI(*vpp); 479 mp = (*vpp)->v_mount; 480 ino = ip->i_number; 481 ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE; 482 if (vap->va_rdev != VNOVAL) { 483 /* 484 * Want to be able to use this to make badblock 485 * inodes, so don't truncate the dev number. 486 */ 487 #if 0 488 ip->i_ffs_rdev = ufs_rw32(vap->va_rdev, 489 UFS_MPNEEDSWAP((*vpp)->v_mount)); 490 #else 491 ip->i_ffs_rdev = vap->va_rdev; 492 #endif 493 } 494 /* 495 * Call fsync to write the vnode so that we don't have to deal with 496 * flushing it when it's marked VDIROP|VXLOCK. 497 * 498 * XXX KS - If we can't flush we also can't call vgone(), so must 499 * return. But, that leaves this vnode in limbo, also not good. 500 * Can this ever happen (barring hardware failure)? 501 */ 502 if ((error = VOP_FSYNC(*vpp, NOCRED, FSYNC_WAIT, 0, 0, curproc)) != 0) { 503 printf("Couldn't fsync in mknod (ino %d)---what do I do?\n", 504 VTOI(*vpp)->i_number); 505 return (error); 506 } 507 /* 508 * Remove vnode so that it will be reloaded by VFS_VGET and 509 * checked to see if it is an alias of an existing entry in 510 * the inode cache. 511 */ 512 /* Used to be vput, but that causes us to call VOP_INACTIVE twice. */ 513 VOP_UNLOCK(*vpp, 0); 514 lfs_vunref(*vpp); 515 (*vpp)->v_type = VNON; 516 vgone(*vpp); 517 error = VFS_VGET(mp, ino, vpp); 518 if (error != 0) { 519 *vpp = NULL; 520 return (error); 521 } 522 return (0); 523 } 524 525 int 526 lfs_create(void *v) 527 { 528 struct vop_create_args /* { 529 struct vnode *a_dvp; 530 struct vnode **a_vpp; 531 struct componentname *a_cnp; 532 struct vattr *a_vap; 533 } */ *ap = v; 534 int error; 535 536 if((error = SET_DIROP(ap->a_dvp)) != 0) { 537 vput(ap->a_dvp); 538 return error; 539 } 540 MARK_VNODE(ap->a_dvp); 541 error = ufs_create(ap); 542 UNMARK_VNODE(ap->a_dvp); 543 if (*(ap->a_vpp)) 544 UNMARK_VNODE(*(ap->a_vpp)); 545 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"create"); 546 return (error); 547 } 548 549 int 550 lfs_whiteout(void *v) 551 { 552 struct vop_whiteout_args /* { 553 struct vnode *a_dvp; 554 struct componentname *a_cnp; 555 int a_flags; 556 } */ *ap = v; 557 int error; 558 559 if ((error = SET_DIROP(ap->a_dvp)) != 0) 560 /* XXX no unlock here? */ 561 return error; 562 MARK_VNODE(ap->a_dvp); 563 error = ufs_whiteout(ap); 564 UNMARK_VNODE(ap->a_dvp); 565 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"whiteout"); 566 return (error); 567 } 568 569 int 570 lfs_mkdir(void *v) 571 { 572 struct vop_mkdir_args /* { 573 struct vnode *a_dvp; 574 struct vnode **a_vpp; 575 struct componentname *a_cnp; 576 struct vattr *a_vap; 577 } */ *ap = v; 578 int error; 579 580 if((error = SET_DIROP(ap->a_dvp)) != 0) { 581 vput(ap->a_dvp); 582 return error; 583 } 584 MARK_VNODE(ap->a_dvp); 585 error = ufs_mkdir(ap); 586 UNMARK_VNODE(ap->a_dvp); 587 if (*(ap->a_vpp)) 588 UNMARK_VNODE(*(ap->a_vpp)); 589 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"mkdir"); 590 return (error); 591 } 592 593 int 594 lfs_remove(void *v) 595 { 596 struct vop_remove_args /* { 597 struct vnode *a_dvp; 598 struct vnode *a_vp; 599 struct componentname *a_cnp; 600 } */ *ap = v; 601 struct vnode *dvp, *vp; 602 int error; 603 604 dvp = ap->a_dvp; 605 vp = ap->a_vp; 606 if ((error = SET_DIROP(dvp)) != 0) { 607 if (dvp == vp) 608 vrele(vp); 609 else 610 vput(vp); 611 vput(dvp); 612 return error; 613 } 614 MARK_VNODE(dvp); 615 MARK_VNODE(vp); 616 error = ufs_remove(ap); 617 UNMARK_VNODE(dvp); 618 UNMARK_VNODE(vp); 619 620 /* 621 * If ufs_remove failed, vp doesn't need to be VDIROP any more. 622 * If it succeeded, we can go ahead and wipe out vp, since 623 * its loss won't appear on disk until checkpoint, and by then 624 * dvp will have been written, completing the dirop. 625 */ 626 --lfs_dirvcount; 627 vp->v_flag &= ~VDIROP; 628 wakeup(&lfs_dirvcount); 629 vrele(vp); 630 631 SET_ENDOP(VTOI(dvp)->i_lfs,dvp,"remove"); 632 return (error); 633 } 634 635 int 636 lfs_rmdir(void *v) 637 { 638 struct vop_rmdir_args /* { 639 struct vnodeop_desc *a_desc; 640 struct vnode *a_dvp; 641 struct vnode *a_vp; 642 struct componentname *a_cnp; 643 } */ *ap = v; 644 int error; 645 646 if ((error = SET_DIROP(ap->a_dvp)) != 0) { 647 vrele(ap->a_dvp); 648 if (ap->a_vp->v_mountedhere != NULL) 649 VOP_UNLOCK(ap->a_dvp, 0); 650 vput(ap->a_vp); 651 return error; 652 } 653 MARK_VNODE(ap->a_dvp); 654 MARK_VNODE(ap->a_vp); 655 error = ufs_rmdir(ap); 656 UNMARK_VNODE(ap->a_dvp); 657 UNMARK_VNODE(ap->a_vp); 658 659 /* 660 * If ufs_rmdir failed, vp doesn't need to be VDIROP any more. 661 * If it succeeded, we can go ahead and wipe out vp, since 662 * its loss won't appear on disk until checkpoint, and by then 663 * dvp will have been written, completing the dirop. 664 */ 665 --lfs_dirvcount; 666 ap->a_vp->v_flag &= ~VDIROP; 667 wakeup(&lfs_dirvcount); 668 vrele(ap->a_vp); 669 670 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"rmdir"); 671 return (error); 672 } 673 674 int 675 lfs_link(void *v) 676 { 677 struct vop_link_args /* { 678 struct vnode *a_dvp; 679 struct vnode *a_vp; 680 struct componentname *a_cnp; 681 } */ *ap = v; 682 int error; 683 684 if ((error = SET_DIROP(ap->a_dvp)) != 0) { 685 vput(ap->a_dvp); 686 return error; 687 } 688 MARK_VNODE(ap->a_dvp); 689 error = ufs_link(ap); 690 UNMARK_VNODE(ap->a_dvp); 691 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"link"); 692 return (error); 693 } 694 695 int 696 lfs_rename(void *v) 697 { 698 struct vop_rename_args /* { 699 struct vnode *a_fdvp; 700 struct vnode *a_fvp; 701 struct componentname *a_fcnp; 702 struct vnode *a_tdvp; 703 struct vnode *a_tvp; 704 struct componentname *a_tcnp; 705 } */ *ap = v; 706 struct vnode *tvp, *fvp, *tdvp, *fdvp; 707 int error; 708 struct lfs *fs; 709 710 fs = VTOI(ap->a_fdvp)->i_lfs; 711 tvp = ap->a_tvp; 712 tdvp = ap->a_tdvp; 713 fvp = ap->a_fvp; 714 fdvp = ap->a_fdvp; 715 716 /* 717 * Check for cross-device rename. 718 * If it is, we don't want to set dirops, just error out. 719 * (In particular note that MARK_VNODE(tdvp) will DTWT on 720 * a cross-device rename.) 721 * 722 * Copied from ufs_rename. 723 */ 724 if ((fvp->v_mount != tdvp->v_mount) || 725 (tvp && (fvp->v_mount != tvp->v_mount))) { 726 error = EXDEV; 727 goto errout; 728 } 729 if ((error = SET_DIROP(fdvp))!=0) 730 goto errout; 731 MARK_VNODE(fdvp); 732 MARK_VNODE(tdvp); 733 error = ufs_rename(ap); 734 UNMARK_VNODE(fdvp); 735 UNMARK_VNODE(tdvp); 736 SET_ENDOP(fs,fdvp,"rename"); 737 return (error); 738 739 errout: 740 VOP_ABORTOP(tdvp, ap->a_tcnp); /* XXX, why not in NFS? */ 741 if (tdvp == tvp) 742 vrele(tdvp); 743 else 744 vput(tdvp); 745 if (tvp) 746 vput(tvp); 747 VOP_ABORTOP(fdvp, ap->a_fcnp); /* XXX, why not in NFS? */ 748 vrele(fdvp); 749 vrele(fvp); 750 return (error); 751 } 752 753 /* XXX hack to avoid calling ITIMES in getattr */ 754 int 755 lfs_getattr(void *v) 756 { 757 struct vop_getattr_args /* { 758 struct vnode *a_vp; 759 struct vattr *a_vap; 760 struct ucred *a_cred; 761 struct proc *a_p; 762 } */ *ap = v; 763 struct vnode *vp = ap->a_vp; 764 struct inode *ip = VTOI(vp); 765 struct vattr *vap = ap->a_vap; 766 struct lfs *fs = ip->i_lfs; 767 /* 768 * Copy from inode table 769 */ 770 vap->va_fsid = ip->i_dev; 771 vap->va_fileid = ip->i_number; 772 vap->va_mode = ip->i_ffs_mode & ~IFMT; 773 vap->va_nlink = ip->i_ffs_nlink; 774 vap->va_uid = ip->i_ffs_uid; 775 vap->va_gid = ip->i_ffs_gid; 776 vap->va_rdev = (dev_t)ip->i_ffs_rdev; 777 vap->va_size = vp->v_size; 778 vap->va_atime.tv_sec = ip->i_ffs_atime; 779 vap->va_atime.tv_nsec = ip->i_ffs_atimensec; 780 vap->va_mtime.tv_sec = ip->i_ffs_mtime; 781 vap->va_mtime.tv_nsec = ip->i_ffs_mtimensec; 782 vap->va_ctime.tv_sec = ip->i_ffs_ctime; 783 vap->va_ctime.tv_nsec = ip->i_ffs_ctimensec; 784 vap->va_flags = ip->i_ffs_flags; 785 vap->va_gen = ip->i_ffs_gen; 786 /* this doesn't belong here */ 787 if (vp->v_type == VBLK) 788 vap->va_blocksize = BLKDEV_IOSIZE; 789 else if (vp->v_type == VCHR) 790 vap->va_blocksize = MAXBSIZE; 791 else 792 vap->va_blocksize = vp->v_mount->mnt_stat.f_iosize; 793 vap->va_bytes = fsbtob(fs, (u_quad_t)ip->i_ffs_blocks); 794 vap->va_type = vp->v_type; 795 vap->va_filerev = ip->i_modrev; 796 return (0); 797 } 798 799 /* 800 * Close called 801 * 802 * XXX -- we were using ufs_close, but since it updates the 803 * times on the inode, we might need to bump the uinodes 804 * count. 805 */ 806 /* ARGSUSED */ 807 int 808 lfs_close(void *v) 809 { 810 struct vop_close_args /* { 811 struct vnode *a_vp; 812 int a_fflag; 813 struct ucred *a_cred; 814 struct proc *a_p; 815 } */ *ap = v; 816 struct vnode *vp = ap->a_vp; 817 struct inode *ip = VTOI(vp); 818 struct timespec ts; 819 820 simple_lock(&vp->v_interlock); 821 if (vp->v_usecount > 1) { 822 TIMEVAL_TO_TIMESPEC(&time, &ts); 823 LFS_ITIMES(ip, &ts, &ts, &ts); 824 } 825 simple_unlock(&vp->v_interlock); 826 return (0); 827 } 828 829 /* 830 * Reclaim an inode so that it can be used for other purposes. 831 */ 832 int lfs_no_inactive = 0; 833 834 int 835 lfs_reclaim(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