lfs_vnops.c revision 1.50.2.5
1 /* $NetBSD: lfs_vnops.c,v 1.50.2.5 2001/11/14 19:19:00 nathanw 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/cdefs.h> 74 __KERNEL_RCSID(0, "$NetBSD: lfs_vnops.c,v 1.50.2.5 2001/11/14 19:19:00 nathanw Exp $"); 75 76 #include <sys/param.h> 77 #include <sys/systm.h> 78 #include <sys/namei.h> 79 #include <sys/resourcevar.h> 80 #include <sys/kernel.h> 81 #include <sys/file.h> 82 #include <sys/stat.h> 83 #include <sys/buf.h> 84 #include <sys/proc.h> 85 #include <sys/conf.h> 86 #include <sys/mount.h> 87 #include <sys/vnode.h> 88 #include <sys/malloc.h> 89 #include <sys/pool.h> 90 #include <sys/signalvar.h> 91 92 #include <miscfs/fifofs/fifo.h> 93 #include <miscfs/genfs/genfs.h> 94 #include <miscfs/specfs/specdev.h> 95 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)(void *); 106 const 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 #if 0 /* XXX until LFS is fixed */ 125 { &vop_mmap_desc, ufs_mmap }, /* mmap */ 126 #endif 127 { &vop_fsync_desc, lfs_fsync }, /* fsync */ 128 { &vop_seek_desc, ufs_seek }, /* seek */ 129 { &vop_remove_desc, lfs_remove }, /* remove */ 130 { &vop_link_desc, lfs_link }, /* link */ 131 { &vop_rename_desc, lfs_rename }, /* rename */ 132 { &vop_mkdir_desc, lfs_mkdir }, /* mkdir */ 133 { &vop_rmdir_desc, lfs_rmdir }, /* rmdir */ 134 { &vop_symlink_desc, lfs_symlink }, /* symlink */ 135 { &vop_readdir_desc, ufs_readdir }, /* readdir */ 136 { &vop_readlink_desc, ufs_readlink }, /* readlink */ 137 { &vop_abortop_desc, ufs_abortop }, /* abortop */ 138 { &vop_inactive_desc, lfs_inactive }, /* inactive */ 139 { &vop_reclaim_desc, lfs_reclaim }, /* reclaim */ 140 { &vop_lock_desc, ufs_lock }, /* lock */ 141 { &vop_unlock_desc, ufs_unlock }, /* unlock */ 142 { &vop_bmap_desc, ufs_bmap }, /* bmap */ 143 { &vop_strategy_desc, ufs_strategy }, /* strategy */ 144 { &vop_print_desc, ufs_print }, /* print */ 145 { &vop_islocked_desc, ufs_islocked }, /* islocked */ 146 { &vop_pathconf_desc, ufs_pathconf }, /* pathconf */ 147 { &vop_advlock_desc, ufs_advlock }, /* advlock */ 148 { &vop_blkatoff_desc, lfs_blkatoff }, /* blkatoff */ 149 { &vop_valloc_desc, lfs_valloc }, /* valloc */ 150 { &vop_balloc_desc, lfs_balloc }, /* balloc */ 151 { &vop_vfree_desc, lfs_vfree }, /* vfree */ 152 { &vop_truncate_desc, lfs_truncate }, /* truncate */ 153 { &vop_update_desc, lfs_update }, /* update */ 154 { &vop_bwrite_desc, lfs_bwrite }, /* bwrite */ 155 { NULL, NULL } 156 }; 157 const struct vnodeopv_desc lfs_vnodeop_opv_desc = 158 { &lfs_vnodeop_p, lfs_vnodeop_entries }; 159 160 int (**lfs_specop_p)(void *); 161 const struct vnodeopv_entry_desc lfs_specop_entries[] = { 162 { &vop_default_desc, vn_default_error }, 163 { &vop_lookup_desc, spec_lookup }, /* lookup */ 164 { &vop_create_desc, spec_create }, /* create */ 165 { &vop_mknod_desc, spec_mknod }, /* mknod */ 166 { &vop_open_desc, spec_open }, /* open */ 167 { &vop_close_desc, ufsspec_close }, /* close */ 168 { &vop_access_desc, ufs_access }, /* access */ 169 { &vop_getattr_desc, lfs_getattr }, /* getattr */ 170 { &vop_setattr_desc, ufs_setattr }, /* setattr */ 171 { &vop_read_desc, ufsspec_read }, /* read */ 172 { &vop_write_desc, ufsspec_write }, /* write */ 173 { &vop_lease_desc, spec_lease_check }, /* lease */ 174 { &vop_ioctl_desc, spec_ioctl }, /* ioctl */ 175 { &vop_fcntl_desc, ufs_fcntl }, /* fcntl */ 176 { &vop_poll_desc, spec_poll }, /* poll */ 177 { &vop_revoke_desc, spec_revoke }, /* revoke */ 178 { &vop_mmap_desc, spec_mmap }, /* mmap */ 179 { &vop_fsync_desc, spec_fsync }, /* fsync */ 180 { &vop_seek_desc, spec_seek }, /* seek */ 181 { &vop_remove_desc, spec_remove }, /* remove */ 182 { &vop_link_desc, spec_link }, /* link */ 183 { &vop_rename_desc, spec_rename }, /* rename */ 184 { &vop_mkdir_desc, spec_mkdir }, /* mkdir */ 185 { &vop_rmdir_desc, spec_rmdir }, /* rmdir */ 186 { &vop_symlink_desc, spec_symlink }, /* symlink */ 187 { &vop_readdir_desc, spec_readdir }, /* readdir */ 188 { &vop_readlink_desc, spec_readlink }, /* readlink */ 189 { &vop_abortop_desc, spec_abortop }, /* abortop */ 190 { &vop_inactive_desc, lfs_inactive }, /* inactive */ 191 { &vop_reclaim_desc, lfs_reclaim }, /* reclaim */ 192 { &vop_lock_desc, ufs_lock }, /* lock */ 193 { &vop_unlock_desc, ufs_unlock }, /* unlock */ 194 { &vop_bmap_desc, spec_bmap }, /* bmap */ 195 { &vop_strategy_desc, spec_strategy }, /* strategy */ 196 { &vop_print_desc, ufs_print }, /* print */ 197 { &vop_islocked_desc, ufs_islocked }, /* islocked */ 198 { &vop_pathconf_desc, spec_pathconf }, /* pathconf */ 199 { &vop_advlock_desc, spec_advlock }, /* advlock */ 200 { &vop_blkatoff_desc, spec_blkatoff }, /* blkatoff */ 201 { &vop_valloc_desc, spec_valloc }, /* valloc */ 202 { &vop_vfree_desc, lfs_vfree }, /* vfree */ 203 { &vop_truncate_desc, spec_truncate }, /* truncate */ 204 { &vop_update_desc, lfs_update }, /* update */ 205 { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ 206 { &vop_getpages_desc, spec_getpages }, /* getpages */ 207 { &vop_putpages_desc, spec_putpages }, /* putpages */ 208 { NULL, NULL } 209 }; 210 const struct vnodeopv_desc lfs_specop_opv_desc = 211 { &lfs_specop_p, lfs_specop_entries }; 212 213 int (**lfs_fifoop_p)(void *); 214 const struct vnodeopv_entry_desc lfs_fifoop_entries[] = { 215 { &vop_default_desc, vn_default_error }, 216 { &vop_lookup_desc, fifo_lookup }, /* lookup */ 217 { &vop_create_desc, fifo_create }, /* create */ 218 { &vop_mknod_desc, fifo_mknod }, /* mknod */ 219 { &vop_open_desc, fifo_open }, /* open */ 220 { &vop_close_desc, ufsfifo_close }, /* close */ 221 { &vop_access_desc, ufs_access }, /* access */ 222 { &vop_getattr_desc, lfs_getattr }, /* getattr */ 223 { &vop_setattr_desc, ufs_setattr }, /* setattr */ 224 { &vop_read_desc, ufsfifo_read }, /* read */ 225 { &vop_write_desc, ufsfifo_write }, /* write */ 226 { &vop_lease_desc, fifo_lease_check }, /* lease */ 227 { &vop_ioctl_desc, fifo_ioctl }, /* ioctl */ 228 { &vop_fcntl_desc, ufs_fcntl }, /* fcntl */ 229 { &vop_poll_desc, fifo_poll }, /* poll */ 230 { &vop_revoke_desc, fifo_revoke }, /* revoke */ 231 { &vop_mmap_desc, fifo_mmap }, /* mmap */ 232 { &vop_fsync_desc, fifo_fsync }, /* fsync */ 233 { &vop_seek_desc, fifo_seek }, /* seek */ 234 { &vop_remove_desc, fifo_remove }, /* remove */ 235 { &vop_link_desc, fifo_link }, /* link */ 236 { &vop_rename_desc, fifo_rename }, /* rename */ 237 { &vop_mkdir_desc, fifo_mkdir }, /* mkdir */ 238 { &vop_rmdir_desc, fifo_rmdir }, /* rmdir */ 239 { &vop_symlink_desc, fifo_symlink }, /* symlink */ 240 { &vop_readdir_desc, fifo_readdir }, /* readdir */ 241 { &vop_readlink_desc, fifo_readlink }, /* readlink */ 242 { &vop_abortop_desc, fifo_abortop }, /* abortop */ 243 { &vop_inactive_desc, lfs_inactive }, /* inactive */ 244 { &vop_reclaim_desc, lfs_reclaim }, /* reclaim */ 245 { &vop_lock_desc, ufs_lock }, /* lock */ 246 { &vop_unlock_desc, ufs_unlock }, /* unlock */ 247 { &vop_bmap_desc, fifo_bmap }, /* bmap */ 248 { &vop_strategy_desc, fifo_strategy }, /* strategy */ 249 { &vop_print_desc, ufs_print }, /* print */ 250 { &vop_islocked_desc, ufs_islocked }, /* islocked */ 251 { &vop_pathconf_desc, fifo_pathconf }, /* pathconf */ 252 { &vop_advlock_desc, fifo_advlock }, /* advlock */ 253 { &vop_blkatoff_desc, fifo_blkatoff }, /* blkatoff */ 254 { &vop_valloc_desc, fifo_valloc }, /* valloc */ 255 { &vop_vfree_desc, lfs_vfree }, /* vfree */ 256 { &vop_truncate_desc, fifo_truncate }, /* truncate */ 257 { &vop_update_desc, lfs_update }, /* update */ 258 { &vop_bwrite_desc, lfs_bwrite }, /* bwrite */ 259 { &vop_putpages_desc, fifo_putpages }, /* putpages */ 260 { NULL, NULL } 261 }; 262 const struct vnodeopv_desc lfs_fifoop_opv_desc = 263 { &lfs_fifoop_p, lfs_fifoop_entries }; 264 265 /* 266 * A function version of LFS_ITIMES, for the UFS functions which call ITIMES 267 */ 268 void 269 lfs_itimes(struct inode *ip, struct timespec *acc, struct timespec *mod, struct timespec *cre) 270 { 271 LFS_ITIMES(ip, acc, mod, cre); 272 } 273 274 #define LFS_READWRITE 275 #include <ufs/ufs/ufs_readwrite.c> 276 #undef LFS_READWRITE 277 278 /* 279 * Synch an open file. 280 */ 281 /* ARGSUSED */ 282 int 283 lfs_fsync(void *v) 284 { 285 struct vop_fsync_args /* { 286 struct vnode *a_vp; 287 struct ucred *a_cred; 288 int a_flags; 289 off_t offlo; 290 off_t offhi; 291 struct proc *a_p; 292 } */ *ap = v; 293 294 /* Ignore the trickle syncer */ 295 if (ap->a_flags & FSYNC_LAZY) 296 return 0; 297 298 return (VOP_UPDATE(ap->a_vp, NULL, NULL, 299 (ap->a_flags & FSYNC_WAIT) != 0 ? UPDATE_WAIT : 0)); 300 } 301 302 /* 303 * Take IN_ADIROP off, then call ufs_inactive. 304 */ 305 int 306 lfs_inactive(void *v) 307 { 308 struct vop_inactive_args /* { 309 struct vnode *a_vp; 310 struct proc *a_p; 311 } */ *ap = v; 312 struct inode *ip = VTOI(ap->a_vp); 313 314 if (ip->i_flag & IN_ADIROP) 315 --ip->i_lfs->lfs_nadirop; 316 ip->i_flag &= ~IN_ADIROP; 317 return ufs_inactive(v); 318 } 319 320 /* 321 * These macros are used to bracket UFS directory ops, so that we can 322 * identify all the pages touched during directory ops which need to 323 * be ordered and flushed atomically, so that they may be recovered. 324 */ 325 /* 326 * XXX KS - Because we have to mark nodes VDIROP in order to prevent 327 * the cache from reclaiming them while a dirop is in progress, we must 328 * also manage the number of nodes so marked (otherwise we can run out). 329 * We do this by setting lfs_dirvcount to the number of marked vnodes; it 330 * is decremented during segment write, when VDIROP is taken off. 331 */ 332 #define SET_DIROP(vp) lfs_set_dirop(vp) 333 static int lfs_set_dirop(struct vnode *); 334 extern int lfs_dirvcount; 335 336 static int 337 lfs_set_dirop(struct vnode *vp) 338 { 339 struct lfs *fs; 340 int error; 341 342 fs = VTOI(vp)->i_lfs; 343 /* 344 * We might need one directory block plus supporting indirect blocks, 345 * plus an inode block and ifile page for the new vnode. 346 */ 347 if ((error = lfs_reserve(fs, vp, btofsb(fs, (NIADDR + 3) << fs->lfs_bshift))) != 0) 348 return (error); 349 if (fs->lfs_dirops == 0) 350 lfs_check(vp, LFS_UNUSED_LBN, 0); 351 while (fs->lfs_writer || lfs_dirvcount > LFS_MAXDIROP) { 352 if(fs->lfs_writer) 353 tsleep(&fs->lfs_dirops, PRIBIO + 1, "lfs_dirop", 0); 354 if(lfs_dirvcount > LFS_MAXDIROP && fs->lfs_dirops==0) { 355 ++fs->lfs_writer; 356 lfs_flush(fs, 0); 357 if(--fs->lfs_writer==0) 358 wakeup(&fs->lfs_dirops); 359 } 360 361 if(lfs_dirvcount > LFS_MAXDIROP) { 362 #ifdef DEBUG_LFS 363 printf("lfs_set_dirop: sleeping with dirops=%d, " 364 "dirvcount=%d\n", fs->lfs_dirops, 365 lfs_dirvcount); 366 #endif 367 if((error = tsleep(&lfs_dirvcount, PCATCH|PUSER, 368 "lfs_maxdirop", 0)) !=0) { 369 lfs_reserve(fs, vp, -btofsb(fs, (NIADDR + 3) << fs->lfs_bshift)); 370 return error; 371 } 372 } 373 } 374 ++fs->lfs_dirops; 375 fs->lfs_doifile = 1; 376 377 /* Hold a reference so SET_ENDOP will be happy */ 378 lfs_vref(vp); 379 380 return 0; 381 } 382 383 #define SET_ENDOP(fs,vp,str) { \ 384 --(fs)->lfs_dirops; \ 385 if (!(fs)->lfs_dirops) { \ 386 if ((fs)->lfs_nadirop) { \ 387 panic("SET_ENDOP: %s: no dirops but nadirop=%d\n", \ 388 (str), (fs)->lfs_nadirop); \ 389 } \ 390 wakeup(&(fs)->lfs_writer); \ 391 lfs_check((vp),LFS_UNUSED_LBN,0); \ 392 } \ 393 lfs_reserve((fs), vp, -btofsb((fs), (NIADDR + 3) << (fs)->lfs_bshift)); /* XXX */ \ 394 lfs_vunref(vp); \ 395 } 396 397 #define MARK_VNODE(dvp) do { \ 398 if (!((dvp)->v_flag & VDIROP)) { \ 399 (void)lfs_vref(dvp); \ 400 ++lfs_dirvcount; \ 401 } \ 402 (dvp)->v_flag |= VDIROP; \ 403 if (!(VTOI(dvp)->i_flag & IN_ADIROP)) { \ 404 ++VTOI(dvp)->i_lfs->lfs_nadirop; \ 405 } \ 406 VTOI(dvp)->i_flag |= IN_ADIROP; \ 407 } while(0) 408 409 #define UNMARK_VNODE(vp) lfs_unmark_vnode(vp) 410 411 void lfs_unmark_vnode(struct vnode *vp) 412 { 413 struct inode *ip; 414 415 ip = VTOI(vp); 416 417 if (ip->i_flag & IN_ADIROP) 418 --ip->i_lfs->lfs_nadirop; 419 ip->i_flag &= ~IN_ADIROP; 420 } 421 422 int 423 lfs_symlink(void *v) 424 { 425 struct vop_symlink_args /* { 426 struct vnode *a_dvp; 427 struct vnode **a_vpp; 428 struct componentname *a_cnp; 429 struct vattr *a_vap; 430 char *a_target; 431 } */ *ap = v; 432 int error; 433 434 if ((error = SET_DIROP(ap->a_dvp)) != 0) { 435 vput(ap->a_dvp); 436 return error; 437 } 438 MARK_VNODE(ap->a_dvp); 439 error = ufs_symlink(ap); 440 UNMARK_VNODE(ap->a_dvp); 441 if (*(ap->a_vpp)) 442 UNMARK_VNODE(*(ap->a_vpp)); 443 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"symlink"); 444 return (error); 445 } 446 447 int 448 lfs_mknod(void *v) 449 { 450 struct vop_mknod_args /* { 451 struct vnode *a_dvp; 452 struct vnode **a_vpp; 453 struct componentname *a_cnp; 454 struct vattr *a_vap; 455 } */ *ap = v; 456 struct vattr *vap = ap->a_vap; 457 struct vnode **vpp = ap->a_vpp; 458 struct inode *ip; 459 int error; 460 struct mount *mp; 461 ino_t ino; 462 463 if ((error = SET_DIROP(ap->a_dvp)) != 0) { 464 vput(ap->a_dvp); 465 return error; 466 } 467 MARK_VNODE(ap->a_dvp); 468 error = ufs_makeinode(MAKEIMODE(vap->va_type, vap->va_mode), 469 ap->a_dvp, vpp, ap->a_cnp); 470 UNMARK_VNODE(ap->a_dvp); 471 if (*(ap->a_vpp)) 472 UNMARK_VNODE(*(ap->a_vpp)); 473 474 /* Either way we're done with the dirop at this point */ 475 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"mknod"); 476 477 if (error) 478 return (error); 479 480 ip = VTOI(*vpp); 481 mp = (*vpp)->v_mount; 482 ino = ip->i_number; 483 ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE; 484 if (vap->va_rdev != VNOVAL) { 485 /* 486 * Want to be able to use this to make badblock 487 * inodes, so don't truncate the dev number. 488 */ 489 #if 0 490 ip->i_ffs_rdev = ufs_rw32(vap->va_rdev, 491 UFS_MPNEEDSWAP((*vpp)->v_mount)); 492 #else 493 ip->i_ffs_rdev = vap->va_rdev; 494 #endif 495 } 496 /* 497 * Call fsync to write the vnode so that we don't have to deal with 498 * flushing it when it's marked VDIROP|VXLOCK. 499 * 500 * XXX KS - If we can't flush we also can't call vgone(), so must 501 * return. But, that leaves this vnode in limbo, also not good. 502 * Can this ever happen (barring hardware failure)? 503 */ 504 if ((error = VOP_FSYNC(*vpp, NOCRED, FSYNC_WAIT, 0, 0, 505 curproc->l_proc)) != 0) { 506 printf("Couldn't fsync in mknod (ino %d)---what do I do?\n", 507 VTOI(*vpp)->i_number); 508 return (error); 509 } 510 /* 511 * Remove vnode so that it will be reloaded by VFS_VGET and 512 * checked to see if it is an alias of an existing entry in 513 * the inode cache. 514 */ 515 /* Used to be vput, but that causes us to call VOP_INACTIVE twice. */ 516 VOP_UNLOCK(*vpp, 0); 517 lfs_vunref(*vpp); 518 (*vpp)->v_type = VNON; 519 vgone(*vpp); 520 error = VFS_VGET(mp, ino, vpp); 521 if (error != 0) { 522 *vpp = NULL; 523 return (error); 524 } 525 return (0); 526 } 527 528 int 529 lfs_create(void *v) 530 { 531 struct vop_create_args /* { 532 struct vnode *a_dvp; 533 struct vnode **a_vpp; 534 struct componentname *a_cnp; 535 struct vattr *a_vap; 536 } */ *ap = v; 537 int error; 538 539 if((error = SET_DIROP(ap->a_dvp)) != 0) { 540 vput(ap->a_dvp); 541 return error; 542 } 543 MARK_VNODE(ap->a_dvp); 544 error = ufs_create(ap); 545 UNMARK_VNODE(ap->a_dvp); 546 if (*(ap->a_vpp)) 547 UNMARK_VNODE(*(ap->a_vpp)); 548 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"create"); 549 return (error); 550 } 551 552 int 553 lfs_whiteout(void *v) 554 { 555 struct vop_whiteout_args /* { 556 struct vnode *a_dvp; 557 struct componentname *a_cnp; 558 int a_flags; 559 } */ *ap = v; 560 int error; 561 562 if ((error = SET_DIROP(ap->a_dvp)) != 0) 563 /* XXX no unlock here? */ 564 return error; 565 MARK_VNODE(ap->a_dvp); 566 error = ufs_whiteout(ap); 567 UNMARK_VNODE(ap->a_dvp); 568 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"whiteout"); 569 return (error); 570 } 571 572 int 573 lfs_mkdir(void *v) 574 { 575 struct vop_mkdir_args /* { 576 struct vnode *a_dvp; 577 struct vnode **a_vpp; 578 struct componentname *a_cnp; 579 struct vattr *a_vap; 580 } */ *ap = v; 581 int error; 582 583 if((error = SET_DIROP(ap->a_dvp)) != 0) { 584 vput(ap->a_dvp); 585 return error; 586 } 587 MARK_VNODE(ap->a_dvp); 588 error = ufs_mkdir(ap); 589 UNMARK_VNODE(ap->a_dvp); 590 if (*(ap->a_vpp)) 591 UNMARK_VNODE(*(ap->a_vpp)); 592 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"mkdir"); 593 return (error); 594 } 595 596 int 597 lfs_remove(void *v) 598 { 599 struct vop_remove_args /* { 600 struct vnode *a_dvp; 601 struct vnode *a_vp; 602 struct componentname *a_cnp; 603 } */ *ap = v; 604 struct vnode *dvp, *vp; 605 int error; 606 607 dvp = ap->a_dvp; 608 vp = ap->a_vp; 609 if ((error = SET_DIROP(dvp)) != 0) { 610 if (dvp == vp) 611 vrele(vp); 612 else 613 vput(vp); 614 vput(dvp); 615 return error; 616 } 617 MARK_VNODE(dvp); 618 MARK_VNODE(vp); 619 error = ufs_remove(ap); 620 UNMARK_VNODE(dvp); 621 UNMARK_VNODE(vp); 622 623 /* 624 * If ufs_remove failed, vp doesn't need to be VDIROP any more. 625 * If it succeeded, we can go ahead and wipe out vp, since 626 * its loss won't appear on disk until checkpoint, and by then 627 * dvp will have been written, completing the dirop. 628 */ 629 --lfs_dirvcount; 630 vp->v_flag &= ~VDIROP; 631 wakeup(&lfs_dirvcount); 632 vrele(vp); 633 634 SET_ENDOP(VTOI(dvp)->i_lfs,dvp,"remove"); 635 return (error); 636 } 637 638 int 639 lfs_rmdir(void *v) 640 { 641 struct vop_rmdir_args /* { 642 struct vnodeop_desc *a_desc; 643 struct vnode *a_dvp; 644 struct vnode *a_vp; 645 struct componentname *a_cnp; 646 } */ *ap = v; 647 int error; 648 649 if ((error = SET_DIROP(ap->a_dvp)) != 0) { 650 vrele(ap->a_dvp); 651 if (ap->a_vp->v_mountedhere != NULL) 652 VOP_UNLOCK(ap->a_dvp, 0); 653 vput(ap->a_vp); 654 return error; 655 } 656 MARK_VNODE(ap->a_dvp); 657 MARK_VNODE(ap->a_vp); 658 error = ufs_rmdir(ap); 659 UNMARK_VNODE(ap->a_dvp); 660 UNMARK_VNODE(ap->a_vp); 661 662 /* 663 * If ufs_rmdir failed, vp doesn't need to be VDIROP any more. 664 * If it succeeded, we can go ahead and wipe out vp, since 665 * its loss won't appear on disk until checkpoint, and by then 666 * dvp will have been written, completing the dirop. 667 */ 668 --lfs_dirvcount; 669 ap->a_vp->v_flag &= ~VDIROP; 670 wakeup(&lfs_dirvcount); 671 vrele(ap->a_vp); 672 673 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"rmdir"); 674 return (error); 675 } 676 677 int 678 lfs_link(void *v) 679 { 680 struct vop_link_args /* { 681 struct vnode *a_dvp; 682 struct vnode *a_vp; 683 struct componentname *a_cnp; 684 } */ *ap = v; 685 int error; 686 687 if ((error = SET_DIROP(ap->a_dvp)) != 0) { 688 vput(ap->a_dvp); 689 return error; 690 } 691 MARK_VNODE(ap->a_dvp); 692 error = ufs_link(ap); 693 UNMARK_VNODE(ap->a_dvp); 694 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"link"); 695 return (error); 696 } 697 698 int 699 lfs_rename(void *v) 700 { 701 struct vop_rename_args /* { 702 struct vnode *a_fdvp; 703 struct vnode *a_fvp; 704 struct componentname *a_fcnp; 705 struct vnode *a_tdvp; 706 struct vnode *a_tvp; 707 struct componentname *a_tcnp; 708 } */ *ap = v; 709 struct vnode *tvp, *fvp, *tdvp, *fdvp; 710 int error; 711 struct lfs *fs; 712 713 fs = VTOI(ap->a_fdvp)->i_lfs; 714 tvp = ap->a_tvp; 715 tdvp = ap->a_tdvp; 716 fvp = ap->a_fvp; 717 fdvp = ap->a_fdvp; 718 719 /* 720 * Check for cross-device rename. 721 * If it is, we don't want to set dirops, just error out. 722 * (In particular note that MARK_VNODE(tdvp) will DTWT on 723 * a cross-device rename.) 724 * 725 * Copied from ufs_rename. 726 */ 727 if ((fvp->v_mount != tdvp->v_mount) || 728 (tvp && (fvp->v_mount != tvp->v_mount))) { 729 error = EXDEV; 730 goto errout; 731 } 732 if ((error = SET_DIROP(fdvp))!=0) 733 goto errout; 734 MARK_VNODE(fdvp); 735 MARK_VNODE(tdvp); 736 error = ufs_rename(ap); 737 UNMARK_VNODE(fdvp); 738 UNMARK_VNODE(tdvp); 739 SET_ENDOP(fs,fdvp,"rename"); 740 return (error); 741 742 errout: 743 VOP_ABORTOP(tdvp, ap->a_tcnp); /* XXX, why not in NFS? */ 744 if (tdvp == tvp) 745 vrele(tdvp); 746 else 747 vput(tdvp); 748 if (tvp) 749 vput(tvp); 750 VOP_ABORTOP(fdvp, ap->a_fcnp); /* XXX, why not in NFS? */ 751 vrele(fdvp); 752 vrele(fvp); 753 return (error); 754 } 755 756 /* XXX hack to avoid calling ITIMES in getattr */ 757 int 758 lfs_getattr(void *v) 759 { 760 struct vop_getattr_args /* { 761 struct vnode *a_vp; 762 struct vattr *a_vap; 763 struct ucred *a_cred; 764 struct proc *a_p; 765 } */ *ap = v; 766 struct vnode *vp = ap->a_vp; 767 struct inode *ip = VTOI(vp); 768 struct vattr *vap = ap->a_vap; 769 struct lfs *fs = ip->i_lfs; 770 /* 771 * Copy from inode table 772 */ 773 vap->va_fsid = ip->i_dev; 774 vap->va_fileid = ip->i_number; 775 vap->va_mode = ip->i_ffs_mode & ~IFMT; 776 vap->va_nlink = ip->i_ffs_nlink; 777 vap->va_uid = ip->i_ffs_uid; 778 vap->va_gid = ip->i_ffs_gid; 779 vap->va_rdev = (dev_t)ip->i_ffs_rdev; 780 vap->va_size = vp->v_size; 781 vap->va_atime.tv_sec = ip->i_ffs_atime; 782 vap->va_atime.tv_nsec = ip->i_ffs_atimensec; 783 vap->va_mtime.tv_sec = ip->i_ffs_mtime; 784 vap->va_mtime.tv_nsec = ip->i_ffs_mtimensec; 785 vap->va_ctime.tv_sec = ip->i_ffs_ctime; 786 vap->va_ctime.tv_nsec = ip->i_ffs_ctimensec; 787 vap->va_flags = ip->i_ffs_flags; 788 vap->va_gen = ip->i_ffs_gen; 789 /* this doesn't belong here */ 790 if (vp->v_type == VBLK) 791 vap->va_blocksize = BLKDEV_IOSIZE; 792 else if (vp->v_type == VCHR) 793 vap->va_blocksize = MAXBSIZE; 794 else 795 vap->va_blocksize = vp->v_mount->mnt_stat.f_iosize; 796 vap->va_bytes = fsbtob(fs, (u_quad_t)ip->i_ffs_blocks); 797 vap->va_type = vp->v_type; 798 vap->va_filerev = ip->i_modrev; 799 return (0); 800 } 801 802 /* 803 * Close called 804 * 805 * XXX -- we were using ufs_close, but since it updates the 806 * times on the inode, we might need to bump the uinodes 807 * count. 808 */ 809 /* ARGSUSED */ 810 int 811 lfs_close(void *v) 812 { 813 struct vop_close_args /* { 814 struct vnode *a_vp; 815 int a_fflag; 816 struct ucred *a_cred; 817 struct proc *a_p; 818 } */ *ap = v; 819 struct vnode *vp = ap->a_vp; 820 struct inode *ip = VTOI(vp); 821 struct timespec ts; 822 823 simple_lock(&vp->v_interlock); 824 if (vp->v_usecount > 1) { 825 TIMEVAL_TO_TIMESPEC(&time, &ts); 826 LFS_ITIMES(ip, &ts, &ts, &ts); 827 } 828 simple_unlock(&vp->v_interlock); 829 return (0); 830 } 831 832 /* 833 * Reclaim an inode so that it can be used for other purposes. 834 */ 835 int lfs_no_inactive = 0; 836 837 int 838 lfs_reclaim(void *v) 839 { 840 struct vop_reclaim_args /* { 841 struct vnode *a_vp; 842 struct proc *a_p; 843 } */ *ap = v; 844 struct vnode *vp = ap->a_vp; 845 int error; 846 847 LFS_CLR_UINO(VTOI(vp), IN_ALLMOD); 848 if ((error = ufs_reclaim(vp, ap->a_p))) 849 return (error); 850 pool_put(&lfs_inode_pool, vp->v_data); 851 vp->v_data = NULL; 852 return (0); 853 } 854
Indexes created Sun Oct 19 02:09:48 GMT 2025