lfs_vnops.c revision 1.50.2.4
1 /* $NetBSD: lfs_vnops.c,v 1.50.2.4 2001/09/26 19:55:13 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/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, 503 curproc->l_proc)) != 0) { 504 printf("Couldn't fsync in mknod (ino %d)---what do I do?\n", 505 VTOI(*vpp)->i_number); 506 return (error); 507 } 508 /* 509 * Remove vnode so that it will be reloaded by VFS_VGET and 510 * checked to see if it is an alias of an existing entry in 511 * the inode cache. 512 */ 513 /* Used to be vput, but that causes us to call VOP_INACTIVE twice. */ 514 VOP_UNLOCK(*vpp, 0); 515 lfs_vunref(*vpp); 516 (*vpp)->v_type = VNON; 517 vgone(*vpp); 518 error = VFS_VGET(mp, ino, vpp); 519 if (error != 0) { 520 *vpp = NULL; 521 return (error); 522 } 523 return (0); 524 } 525 526 int 527 lfs_create(void *v) 528 { 529 struct vop_create_args /* { 530 struct vnode *a_dvp; 531 struct vnode **a_vpp; 532 struct componentname *a_cnp; 533 struct vattr *a_vap; 534 } */ *ap = v; 535 int error; 536 537 if((error = SET_DIROP(ap->a_dvp)) != 0) { 538 vput(ap->a_dvp); 539 return error; 540 } 541 MARK_VNODE(ap->a_dvp); 542 error = ufs_create(ap); 543 UNMARK_VNODE(ap->a_dvp); 544 if (*(ap->a_vpp)) 545 UNMARK_VNODE(*(ap->a_vpp)); 546 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"create"); 547 return (error); 548 } 549 550 int 551 lfs_whiteout(void *v) 552 { 553 struct vop_whiteout_args /* { 554 struct vnode *a_dvp; 555 struct componentname *a_cnp; 556 int a_flags; 557 } */ *ap = v; 558 int error; 559 560 if ((error = SET_DIROP(ap->a_dvp)) != 0) 561 /* XXX no unlock here? */ 562 return error; 563 MARK_VNODE(ap->a_dvp); 564 error = ufs_whiteout(ap); 565 UNMARK_VNODE(ap->a_dvp); 566 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"whiteout"); 567 return (error); 568 } 569 570 int 571 lfs_mkdir(void *v) 572 { 573 struct vop_mkdir_args /* { 574 struct vnode *a_dvp; 575 struct vnode **a_vpp; 576 struct componentname *a_cnp; 577 struct vattr *a_vap; 578 } */ *ap = v; 579 int error; 580 581 if((error = SET_DIROP(ap->a_dvp)) != 0) { 582 vput(ap->a_dvp); 583 return error; 584 } 585 MARK_VNODE(ap->a_dvp); 586 error = ufs_mkdir(ap); 587 UNMARK_VNODE(ap->a_dvp); 588 if (*(ap->a_vpp)) 589 UNMARK_VNODE(*(ap->a_vpp)); 590 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"mkdir"); 591 return (error); 592 } 593 594 int 595 lfs_remove(void *v) 596 { 597 struct vop_remove_args /* { 598 struct vnode *a_dvp; 599 struct vnode *a_vp; 600 struct componentname *a_cnp; 601 } */ *ap = v; 602 struct vnode *dvp, *vp; 603 int error; 604 605 dvp = ap->a_dvp; 606 vp = ap->a_vp; 607 if ((error = SET_DIROP(dvp)) != 0) { 608 if (dvp == vp) 609 vrele(vp); 610 else 611 vput(vp); 612 vput(dvp); 613 return error; 614 } 615 MARK_VNODE(dvp); 616 MARK_VNODE(vp); 617 error = ufs_remove(ap); 618 UNMARK_VNODE(dvp); 619 UNMARK_VNODE(vp); 620 621 /* 622 * If ufs_remove failed, vp doesn't need to be VDIROP any more. 623 * If it succeeded, we can go ahead and wipe out vp, since 624 * its loss won't appear on disk until checkpoint, and by then 625 * dvp will have been written, completing the dirop. 626 */ 627 --lfs_dirvcount; 628 vp->v_flag &= ~VDIROP; 629 wakeup(&lfs_dirvcount); 630 vrele(vp); 631 632 SET_ENDOP(VTOI(dvp)->i_lfs,dvp,"remove"); 633 return (error); 634 } 635 636 int 637 lfs_rmdir(void *v) 638 { 639 struct vop_rmdir_args /* { 640 struct vnodeop_desc *a_desc; 641 struct vnode *a_dvp; 642 struct vnode *a_vp; 643 struct componentname *a_cnp; 644 } */ *ap = v; 645 int error; 646 647 if ((error = SET_DIROP(ap->a_dvp)) != 0) { 648 vrele(ap->a_dvp); 649 if (ap->a_vp->v_mountedhere != NULL) 650 VOP_UNLOCK(ap->a_dvp, 0); 651 vput(ap->a_vp); 652 return error; 653 } 654 MARK_VNODE(ap->a_dvp); 655 MARK_VNODE(ap->a_vp); 656 error = ufs_rmdir(ap); 657 UNMARK_VNODE(ap->a_dvp); 658 UNMARK_VNODE(ap->a_vp); 659 660 /* 661 * If ufs_rmdir failed, vp doesn't need to be VDIROP any more. 662 * If it succeeded, we can go ahead and wipe out vp, since 663 * its loss won't appear on disk until checkpoint, and by then 664 * dvp will have been written, completing the dirop. 665 */ 666 --lfs_dirvcount; 667 ap->a_vp->v_flag &= ~VDIROP; 668 wakeup(&lfs_dirvcount); 669 vrele(ap->a_vp); 670 671 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"rmdir"); 672 return (error); 673 } 674 675 int 676 lfs_link(void *v) 677 { 678 struct vop_link_args /* { 679 struct vnode *a_dvp; 680 struct vnode *a_vp; 681 struct componentname *a_cnp; 682 } */ *ap = v; 683 int error; 684 685 if ((error = SET_DIROP(ap->a_dvp)) != 0) { 686 vput(ap->a_dvp); 687 return error; 688 } 689 MARK_VNODE(ap->a_dvp); 690 error = ufs_link(ap); 691 UNMARK_VNODE(ap->a_dvp); 692 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"link"); 693 return (error); 694 } 695 696 int 697 lfs_rename(void *v) 698 { 699 struct vop_rename_args /* { 700 struct vnode *a_fdvp; 701 struct vnode *a_fvp; 702 struct componentname *a_fcnp; 703 struct vnode *a_tdvp; 704 struct vnode *a_tvp; 705 struct componentname *a_tcnp; 706 } */ *ap = v; 707 struct vnode *tvp, *fvp, *tdvp, *fdvp; 708 int error; 709 struct lfs *fs; 710 711 fs = VTOI(ap->a_fdvp)->i_lfs; 712 tvp = ap->a_tvp; 713 tdvp = ap->a_tdvp; 714 fvp = ap->a_fvp; 715 fdvp = ap->a_fdvp; 716 717 /* 718 * Check for cross-device rename. 719 * If it is, we don't want to set dirops, just error out. 720 * (In particular note that MARK_VNODE(tdvp) will DTWT on 721 * a cross-device rename.) 722 * 723 * Copied from ufs_rename. 724 */ 725 if ((fvp->v_mount != tdvp->v_mount) || 726 (tvp && (fvp->v_mount != tvp->v_mount))) { 727 error = EXDEV; 728 goto errout; 729 } 730 if ((error = SET_DIROP(fdvp))!=0) 731 goto errout; 732 MARK_VNODE(fdvp); 733 MARK_VNODE(tdvp); 734 error = ufs_rename(ap); 735 UNMARK_VNODE(fdvp); 736 UNMARK_VNODE(tdvp); 737 SET_ENDOP(fs,fdvp,"rename"); 738 return (error); 739 740 errout: 741 VOP_ABORTOP(tdvp, ap->a_tcnp); /* XXX, why not in NFS? */ 742 if (tdvp == tvp) 743 vrele(tdvp); 744 else 745 vput(tdvp); 746 if (tvp) 747 vput(tvp); 748 VOP_ABORTOP(fdvp, ap->a_fcnp); /* XXX, why not in NFS? */ 749 vrele(fdvp); 750 vrele(fvp); 751 return (error); 752 } 753 754 /* XXX hack to avoid calling ITIMES in getattr */ 755 int 756 lfs_getattr(void *v) 757 { 758 struct vop_getattr_args /* { 759 struct vnode *a_vp; 760 struct vattr *a_vap; 761 struct ucred *a_cred; 762 struct proc *a_p; 763 } */ *ap = v; 764 struct vnode *vp = ap->a_vp; 765 struct inode *ip = VTOI(vp); 766 struct vattr *vap = ap->a_vap; 767 struct lfs *fs = ip->i_lfs; 768 /* 769 * Copy from inode table 770 */ 771 vap->va_fsid = ip->i_dev; 772 vap->va_fileid = ip->i_number; 773 vap->va_mode = ip->i_ffs_mode & ~IFMT; 774 vap->va_nlink = ip->i_ffs_nlink; 775 vap->va_uid = ip->i_ffs_uid; 776 vap->va_gid = ip->i_ffs_gid; 777 vap->va_rdev = (dev_t)ip->i_ffs_rdev; 778 vap->va_size = vp->v_size; 779 vap->va_atime.tv_sec = ip->i_ffs_atime; 780 vap->va_atime.tv_nsec = ip->i_ffs_atimensec; 781 vap->va_mtime.tv_sec = ip->i_ffs_mtime; 782 vap->va_mtime.tv_nsec = ip->i_ffs_mtimensec; 783 vap->va_ctime.tv_sec = ip->i_ffs_ctime; 784 vap->va_ctime.tv_nsec = ip->i_ffs_ctimensec; 785 vap->va_flags = ip->i_ffs_flags; 786 vap->va_gen = ip->i_ffs_gen; 787 /* this doesn't belong here */ 788 if (vp->v_type == VBLK) 789 vap->va_blocksize = BLKDEV_IOSIZE; 790 else if (vp->v_type == VCHR) 791 vap->va_blocksize = MAXBSIZE; 792 else 793 vap->va_blocksize = vp->v_mount->mnt_stat.f_iosize; 794 vap->va_bytes = fsbtob(fs, (u_quad_t)ip->i_ffs_blocks); 795 vap->va_type = vp->v_type; 796 vap->va_filerev = ip->i_modrev; 797 return (0); 798 } 799 800 /* 801 * Close called 802 * 803 * XXX -- we were using ufs_close, but since it updates the 804 * times on the inode, we might need to bump the uinodes 805 * count. 806 */ 807 /* ARGSUSED */ 808 int 809 lfs_close(void *v) 810 { 811 struct vop_close_args /* { 812 struct vnode *a_vp; 813 int a_fflag; 814 struct ucred *a_cred; 815 struct proc *a_p; 816 } */ *ap = v; 817 struct vnode *vp = ap->a_vp; 818 struct inode *ip = VTOI(vp); 819 struct timespec ts; 820 821 simple_lock(&vp->v_interlock); 822 if (vp->v_usecount > 1) { 823 TIMEVAL_TO_TIMESPEC(&time, &ts); 824 LFS_ITIMES(ip, &ts, &ts, &ts); 825 } 826 simple_unlock(&vp->v_interlock); 827 return (0); 828 } 829 830 /* 831 * Reclaim an inode so that it can be used for other purposes. 832 */ 833 int lfs_no_inactive = 0; 834 835 int 836 lfs_reclaim(void *v) 837 { 838 struct vop_reclaim_args /* { 839 struct vnode *a_vp; 840 struct proc *a_p; 841 } */ *ap = v; 842 struct vnode *vp = ap->a_vp; 843 int error; 844 845 LFS_CLR_UINO(VTOI(vp), IN_ALLMOD); 846 if ((error = ufs_reclaim(vp, ap->a_p))) 847 return (error); 848 pool_put(&lfs_inode_pool, vp->v_data); 849 vp->v_data = NULL; 850 return (0); 851 } 852
Indexes created Wed Oct 22 06:10:02 GMT 2025