1 /* 2 * Copyright (c) 1986, 1989, 1991, 1993, 1995 3 * The Regents of the University of California. All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 * 7 * @(#)lfs_vnops.c 8.12 (Berkeley) 05/14/95 8 */ 9 10 #include <sys/param.h> 11 #include <sys/systm.h> 12 #include <sys/namei.h> 13 #include <sys/resourcevar.h> 14 #include <sys/kernel.h> 15 #include <sys/file.h> 16 #include <sys/stat.h> 17 #include <sys/buf.h> 18 #include <sys/proc.h> 19 #include <sys/conf.h> 20 #include <sys/mount.h> 21 #include <sys/vnode.h> 22 #include <sys/malloc.h> 23 24 #include <vm/vm.h> 25 26 #include <miscfs/specfs/specdev.h> 27 #include <miscfs/fifofs/fifo.h> 28 29 #include <ufs/ufs/quota.h> 30 #include <ufs/ufs/inode.h> 31 #include <ufs/ufs/dir.h> 32 #include <ufs/ufs/ufsmount.h> 33 #include <ufs/ufs/ufs_extern.h> 34 35 #include <ufs/lfs/lfs.h> 36 #include <ufs/lfs/lfs_extern.h> 37 38 /* Global vfs data structures for lfs. */ 39 int (**lfs_vnodeop_p)(); 40 struct vnodeopv_entry_desc lfs_vnodeop_entries[] = { 41 { &vop_default_desc, vn_default_error }, 42 { &vop_lookup_desc, ufs_lookup }, /* lookup */ 43 { &vop_create_desc, ufs_create }, /* create */ 44 { &vop_whiteout_desc, ufs_whiteout }, /* whiteout */ 45 { &vop_mknod_desc, ufs_mknod }, /* mknod */ 46 { &vop_open_desc, ufs_open }, /* open */ 47 { &vop_close_desc, lfs_close }, /* close */ 48 { &vop_access_desc, ufs_access }, /* access */ 49 { &vop_getattr_desc, lfs_getattr }, /* getattr */ 50 { &vop_setattr_desc, ufs_setattr }, /* setattr */ 51 { &vop_read_desc, lfs_read }, /* read */ 52 { &vop_write_desc, lfs_write }, /* write */ 53 { &vop_lease_desc, ufs_lease_check }, /* lease */ 54 { &vop_ioctl_desc, ufs_ioctl }, /* ioctl */ 55 { &vop_select_desc, ufs_select }, /* select */ 56 { &vop_revoke_desc, ufs_revoke }, /* revoke */ 57 { &vop_mmap_desc, ufs_mmap }, /* mmap */ 58 { &vop_fsync_desc, lfs_fsync }, /* fsync */ 59 { &vop_seek_desc, ufs_seek }, /* seek */ 60 { &vop_remove_desc, ufs_remove }, /* remove */ 61 { &vop_link_desc, ufs_link }, /* link */ 62 { &vop_rename_desc, ufs_rename }, /* rename */ 63 { &vop_mkdir_desc, ufs_mkdir }, /* mkdir */ 64 { &vop_rmdir_desc, ufs_rmdir }, /* rmdir */ 65 { &vop_symlink_desc, ufs_symlink }, /* symlink */ 66 { &vop_readdir_desc, ufs_readdir }, /* readdir */ 67 { &vop_readlink_desc, ufs_readlink }, /* readlink */ 68 { &vop_abortop_desc, ufs_abortop }, /* abortop */ 69 { &vop_inactive_desc, lfs_inactive }, /* inactive */ 70 { &vop_reclaim_desc, lfs_reclaim }, /* reclaim */ 71 { &vop_lock_desc, ufs_lock }, /* lock */ 72 { &vop_unlock_desc, ufs_unlock }, /* unlock */ 73 { &vop_bmap_desc, ufs_bmap }, /* bmap */ 74 { &vop_strategy_desc, ufs_strategy }, /* strategy */ 75 { &vop_print_desc, ufs_print }, /* print */ 76 { &vop_islocked_desc, ufs_islocked }, /* islocked */ 77 { &vop_pathconf_desc, ufs_pathconf }, /* pathconf */ 78 { &vop_advlock_desc, ufs_advlock }, /* advlock */ 79 { &vop_blkatoff_desc, lfs_blkatoff }, /* blkatoff */ 80 { &vop_valloc_desc, lfs_valloc }, /* valloc */ 81 { &vop_vfree_desc, lfs_vfree }, /* vfree */ 82 { &vop_truncate_desc, lfs_truncate }, /* truncate */ 83 { &vop_update_desc, lfs_update }, /* update */ 84 { &vop_bwrite_desc, lfs_bwrite }, /* bwrite */ 85 { (struct vnodeop_desc*)NULL, (int(*)())NULL } 86 }; 87 struct vnodeopv_desc lfs_vnodeop_opv_desc = 88 { &lfs_vnodeop_p, lfs_vnodeop_entries }; 89 90 int (**lfs_specop_p)(); 91 struct vnodeopv_entry_desc lfs_specop_entries[] = { 92 { &vop_default_desc, vn_default_error }, 93 { &vop_lookup_desc, spec_lookup }, /* lookup */ 94 { &vop_create_desc, spec_create }, /* create */ 95 { &vop_mknod_desc, spec_mknod }, /* mknod */ 96 { &vop_open_desc, spec_open }, /* open */ 97 { &vop_close_desc, ufsspec_close }, /* close */ 98 { &vop_access_desc, ufs_access }, /* access */ 99 { &vop_getattr_desc, lfs_getattr }, /* getattr */ 100 { &vop_setattr_desc, ufs_setattr }, /* setattr */ 101 { &vop_read_desc, ufsspec_read }, /* read */ 102 { &vop_write_desc, ufsspec_write }, /* write */ 103 { &vop_lease_desc, spec_lease_check }, /* lease */ 104 { &vop_ioctl_desc, spec_ioctl }, /* ioctl */ 105 { &vop_select_desc, spec_select }, /* select */ 106 { &vop_revoke_desc, spec_revoke }, /* revoke */ 107 { &vop_mmap_desc, spec_mmap }, /* mmap */ 108 { &vop_fsync_desc, spec_fsync }, /* fsync */ 109 { &vop_seek_desc, spec_seek }, /* seek */ 110 { &vop_remove_desc, spec_remove }, /* remove */ 111 { &vop_link_desc, spec_link }, /* link */ 112 { &vop_rename_desc, spec_rename }, /* rename */ 113 { &vop_mkdir_desc, spec_mkdir }, /* mkdir */ 114 { &vop_rmdir_desc, spec_rmdir }, /* rmdir */ 115 { &vop_symlink_desc, spec_symlink }, /* symlink */ 116 { &vop_readdir_desc, spec_readdir }, /* readdir */ 117 { &vop_readlink_desc, spec_readlink }, /* readlink */ 118 { &vop_abortop_desc, spec_abortop }, /* abortop */ 119 { &vop_inactive_desc, lfs_inactive }, /* inactive */ 120 { &vop_reclaim_desc, lfs_reclaim }, /* reclaim */ 121 { &vop_lock_desc, ufs_lock }, /* lock */ 122 { &vop_unlock_desc, ufs_unlock }, /* unlock */ 123 { &vop_bmap_desc, spec_bmap }, /* bmap */ 124 { &vop_strategy_desc, spec_strategy }, /* strategy */ 125 { &vop_print_desc, ufs_print }, /* print */ 126 { &vop_islocked_desc, ufs_islocked }, /* islocked */ 127 { &vop_pathconf_desc, spec_pathconf }, /* pathconf */ 128 { &vop_advlock_desc, spec_advlock }, /* advlock */ 129 { &vop_blkatoff_desc, spec_blkatoff }, /* blkatoff */ 130 { &vop_valloc_desc, spec_valloc }, /* valloc */ 131 { &vop_vfree_desc, lfs_vfree }, /* vfree */ 132 { &vop_truncate_desc, spec_truncate }, /* truncate */ 133 { &vop_update_desc, lfs_update }, /* update */ 134 { &vop_bwrite_desc, lfs_bwrite }, /* bwrite */ 135 { (struct vnodeop_desc*)NULL, (int(*)())NULL } 136 }; 137 struct vnodeopv_desc lfs_specop_opv_desc = 138 { &lfs_specop_p, lfs_specop_entries }; 139 140 #ifdef FIFO 141 int (**lfs_fifoop_p)(); 142 struct vnodeopv_entry_desc lfs_fifoop_entries[] = { 143 { &vop_default_desc, vn_default_error }, 144 { &vop_lookup_desc, fifo_lookup }, /* lookup */ 145 { &vop_create_desc, fifo_create }, /* create */ 146 { &vop_mknod_desc, fifo_mknod }, /* mknod */ 147 { &vop_open_desc, fifo_open }, /* open */ 148 { &vop_close_desc, ufsfifo_close }, /* close */ 149 { &vop_access_desc, ufs_access }, /* access */ 150 { &vop_getattr_desc, lfs_getattr }, /* getattr */ 151 { &vop_setattr_desc, ufs_setattr }, /* setattr */ 152 { &vop_read_desc, ufsfifo_read }, /* read */ 153 { &vop_write_desc, ufsfifo_write }, /* write */ 154 { &vop_lease_desc, fifo_lease_check }, /* lease */ 155 { &vop_ioctl_desc, fifo_ioctl }, /* ioctl */ 156 { &vop_select_desc, fifo_select }, /* select */ 157 { &vop_revoke_desc, fifo_revoke }, /* revoke */ 158 { &vop_mmap_desc, fifo_mmap }, /* mmap */ 159 { &vop_fsync_desc, fifo_fsync }, /* fsync */ 160 { &vop_seek_desc, fifo_seek }, /* seek */ 161 { &vop_remove_desc, fifo_remove }, /* remove */ 162 { &vop_link_desc, fifo_link }, /* link */ 163 { &vop_rename_desc, fifo_rename }, /* rename */ 164 { &vop_mkdir_desc, fifo_mkdir }, /* mkdir */ 165 { &vop_rmdir_desc, fifo_rmdir }, /* rmdir */ 166 { &vop_symlink_desc, fifo_symlink }, /* symlink */ 167 { &vop_readdir_desc, fifo_readdir }, /* readdir */ 168 { &vop_readlink_desc, fifo_readlink }, /* readlink */ 169 { &vop_abortop_desc, fifo_abortop }, /* abortop */ 170 { &vop_inactive_desc, lfs_inactive }, /* inactive */ 171 { &vop_reclaim_desc, lfs_reclaim }, /* reclaim */ 172 { &vop_lock_desc, ufs_lock }, /* lock */ 173 { &vop_unlock_desc, ufs_unlock }, /* unlock */ 174 { &vop_bmap_desc, fifo_bmap }, /* bmap */ 175 { &vop_strategy_desc, fifo_strategy }, /* strategy */ 176 { &vop_print_desc, ufs_print }, /* print */ 177 { &vop_islocked_desc, ufs_islocked }, /* islocked */ 178 { &vop_pathconf_desc, fifo_pathconf }, /* pathconf */ 179 { &vop_advlock_desc, fifo_advlock }, /* advlock */ 180 { &vop_blkatoff_desc, fifo_blkatoff }, /* blkatoff */ 181 { &vop_valloc_desc, fifo_valloc }, /* valloc */ 182 { &vop_vfree_desc, lfs_vfree }, /* vfree */ 183 { &vop_truncate_desc, fifo_truncate }, /* truncate */ 184 { &vop_update_desc, lfs_update }, /* update */ 185 { &vop_bwrite_desc, lfs_bwrite }, /* bwrite */ 186 { (struct vnodeop_desc*)NULL, (int(*)())NULL } 187 }; 188 struct vnodeopv_desc lfs_fifoop_opv_desc = 189 { &lfs_fifoop_p, lfs_fifoop_entries }; 190 #endif /* FIFO */ 191 192 #define LFS_READWRITE 193 #include <ufs/ufs/ufs_readwrite.c> 194 #undef LFS_READWRITE 195 196 /* 197 * Synch an open file. 198 */ 199 /* ARGSUSED */ 200 lfs_fsync(ap) 201 struct vop_fsync_args /* { 202 struct vnode *a_vp; 203 struct ucred *a_cred; 204 int a_waitfor; 205 struct proc *a_p; 206 } */ *ap; 207 { 208 struct timeval tv; 209 210 tv = time; 211 return (VOP_UPDATE(ap->a_vp, &tv, &tv, 212 ap->a_waitfor == MNT_WAIT ? LFS_SYNC : 0)); 213 } 214 215 /* 216 * These macros are used to bracket UFS directory ops, so that we can 217 * identify all the pages touched during directory ops which need to 218 * be ordered and flushed atomically, so that they may be recovered. 219 */ 220 #define SET_DIROP(fs) { \ 221 if ((fs)->lfs_writer) \ 222 tsleep(&(fs)->lfs_dirops, PRIBIO + 1, "lfs_dirop", 0); \ 223 ++(fs)->lfs_dirops; \ 224 (fs)->lfs_doifile = 1; \ 225 } 226 227 #define SET_ENDOP(fs) { \ 228 --(fs)->lfs_dirops; \ 229 if (!(fs)->lfs_dirops) \ 230 wakeup(&(fs)->lfs_writer); \ 231 } 232 233 #define MARK_VNODE(dvp) (dvp)->v_flag |= VDIROP 234 235 int 236 lfs_symlink(ap) 237 struct vop_symlink_args /* { 238 struct vnode *a_dvp; 239 struct vnode **a_vpp; 240 struct componentname *a_cnp; 241 struct vattr *a_vap; 242 char *a_target; 243 } */ *ap; 244 { 245 int ret; 246 247 SET_DIROP(VTOI(ap->a_dvp)->i_lfs); 248 MARK_VNODE(ap->a_dvp); 249 ret = ufs_symlink(ap); 250 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs); 251 return (ret); 252 } 253 254 int 255 lfs_mknod(ap) 256 struct vop_mknod_args /* { 257 struct vnode *a_dvp; 258 struct vnode **a_vpp; 259 struct componentname *a_cnp; 260 struct vattr *a_vap; 261 } */ *ap; 262 { 263 int ret; 264 265 SET_DIROP(VTOI(ap->a_dvp)->i_lfs); 266 MARK_VNODE(ap->a_dvp); 267 ret = ufs_mknod(ap); 268 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs); 269 return (ret); 270 } 271 272 int 273 lfs_create(ap) 274 struct vop_create_args /* { 275 struct vnode *a_dvp; 276 struct vnode **a_vpp; 277 struct componentname *a_cnp; 278 struct vattr *a_vap; 279 } */ *ap; 280 { 281 int ret; 282 283 SET_DIROP(VTOI(ap->a_dvp)->i_lfs); 284 MARK_VNODE(ap->a_dvp); 285 ret = ufs_create(ap); 286 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs); 287 return (ret); 288 } 289 290 int 291 lfs_mkdir(ap) 292 struct vop_mkdir_args /* { 293 struct vnode *a_dvp; 294 struct vnode **a_vpp; 295 struct componentname *a_cnp; 296 struct vattr *a_vap; 297 } */ *ap; 298 { 299 int ret; 300 301 SET_DIROP(VTOI(ap->a_dvp)->i_lfs); 302 MARK_VNODE(ap->a_dvp); 303 ret = ufs_mkdir(ap); 304 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs); 305 return (ret); 306 } 307 308 int 309 lfs_remove(ap) 310 struct vop_remove_args /* { 311 struct vnode *a_dvp; 312 struct vnode *a_vp; 313 struct componentname *a_cnp; 314 } */ *ap; 315 { 316 int ret; 317 318 SET_DIROP(VTOI(ap->a_dvp)->i_lfs); 319 MARK_VNODE(ap->a_dvp); 320 MARK_VNODE(ap->a_vp); 321 ret = ufs_remove(ap); 322 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs); 323 return (ret); 324 } 325 326 int 327 lfs_rmdir(ap) 328 struct vop_rmdir_args /* { 329 struct vnodeop_desc *a_desc; 330 struct vnode *a_dvp; 331 struct vnode *a_vp; 332 struct componentname *a_cnp; 333 } */ *ap; 334 { 335 int ret; 336 337 SET_DIROP(VTOI(ap->a_dvp)->i_lfs); 338 MARK_VNODE(ap->a_dvp); 339 MARK_VNODE(ap->a_vp); 340 ret = ufs_rmdir(ap); 341 SET_ENDOP(VTOI(ap->a_dvp)->i_lfs); 342 return (ret); 343 } 344 345 int 346 lfs_link(ap) 347 struct vop_link_args /* { 348 struct vnode *a_vp; 349 struct vnode *a_tdvp; 350 struct componentname *a_cnp; 351 } */ *ap; 352 { 353 int ret; 354 355 SET_DIROP(VTOI(ap->a_tdvp)->i_lfs); 356 MARK_VNODE(ap->a_tdvp); 357 ret = ufs_link(ap); 358 SET_ENDOP(VTOI(ap->a_tdvp)->i_lfs); 359 return (ret); 360 } 361 362 int 363 lfs_rename(ap) 364 struct vop_rename_args /* { 365 struct vnode *a_fdvp; 366 struct vnode *a_fvp; 367 struct componentname *a_fcnp; 368 struct vnode *a_tdvp; 369 struct vnode *a_tvp; 370 struct componentname *a_tcnp; 371 } */ *ap; 372 { 373 int ret; 374 375 SET_DIROP(VTOI(ap->a_fdvp)->i_lfs); 376 MARK_VNODE(ap->a_fdvp); 377 MARK_VNODE(ap->a_tdvp); 378 ret = ufs_rename(ap); 379 SET_ENDOP(VTOI(ap->a_fdvp)->i_lfs); 380 return (ret); 381 } 382 /* XXX hack to avoid calling ITIMES in getattr */ 383 int 384 lfs_getattr(ap) 385 struct vop_getattr_args /* { 386 struct vnode *a_vp; 387 struct vattr *a_vap; 388 struct ucred *a_cred; 389 struct proc *a_p; 390 } */ *ap; 391 { 392 register struct vnode *vp = ap->a_vp; 393 register struct inode *ip = VTOI(vp); 394 register struct vattr *vap = ap->a_vap; 395 /* 396 * Copy from inode table 397 */ 398 vap->va_fsid = ip->i_dev; 399 vap->va_fileid = ip->i_number; 400 vap->va_mode = ip->i_mode & ~IFMT; 401 vap->va_nlink = ip->i_nlink; 402 vap->va_uid = ip->i_uid; 403 vap->va_gid = ip->i_gid; 404 vap->va_rdev = (dev_t)ip->i_rdev; 405 vap->va_size = ip->i_din.di_size; 406 vap->va_atime.ts_sec = ip->i_atime; 407 vap->va_atime.ts_nsec = ip->i_atimensec; 408 vap->va_mtime.ts_sec = ip->i_mtime; 409 vap->va_mtime.ts_nsec = ip->i_mtimensec; 410 vap->va_ctime.ts_sec = ip->i_ctime; 411 vap->va_ctime.ts_nsec = ip->i_ctimensec; 412 vap->va_flags = ip->i_flags; 413 vap->va_gen = ip->i_gen; 414 /* this doesn't belong here */ 415 if (vp->v_type == VBLK) 416 vap->va_blocksize = BLKDEV_IOSIZE; 417 else if (vp->v_type == VCHR) 418 vap->va_blocksize = MAXBSIZE; 419 else 420 vap->va_blocksize = vp->v_mount->mnt_stat.f_iosize; 421 vap->va_bytes = dbtob(ip->i_blocks); 422 vap->va_type = vp->v_type; 423 vap->va_filerev = ip->i_modrev; 424 return (0); 425 } 426 /* 427 * Close called 428 * 429 * XXX -- we were using ufs_close, but since it updates the 430 * times on the inode, we might need to bump the uinodes 431 * count. 432 */ 433 /* ARGSUSED */ 434 int 435 lfs_close(ap) 436 struct vop_close_args /* { 437 struct vnode *a_vp; 438 int a_fflag; 439 struct ucred *a_cred; 440 struct proc *a_p; 441 } */ *ap; 442 { 443 register struct vnode *vp = ap->a_vp; 444 register struct inode *ip = VTOI(vp); 445 int mod; 446 447 simple_lock(&vp->v_interlock); 448 if (vp->v_usecount > 1) { 449 mod = ip->i_flag & IN_MODIFIED; 450 ITIMES(ip, &time, &time); 451 if (!mod && ip->i_flag & IN_MODIFIED) 452 ip->i_lfs->lfs_uinodes++; 453 } 454 simple_unlock(&vp->v_interlock); 455 return (0); 456 } 457 458 /* 459 * Stub inactive routine that avoid calling ufs_inactive in some cases. 460 */ 461 int lfs_no_inactive = 0; 462 463 int 464 lfs_inactive(ap) 465 struct vop_inactive_args /* { 466 struct vnode *a_vp; 467 } */ *ap; 468 { 469 470 if (lfs_no_inactive) 471 return (0); 472 return (ufs_inactive(ap)); 473 } 474 475 /* 476 * Reclaim an inode so that it can be used for other purposes. 477 */ 478 int 479 lfs_reclaim(ap) 480 struct vop_reclaim_args /* { 481 struct vnode *a_vp; 482 struct proc *a_p; 483 } */ *ap; 484 { 485 register struct vnode *vp = ap->a_vp; 486 int error; 487 488 if (error = ufs_reclaim(vp, ap->a_p)) 489 return (error); 490 FREE(vp->v_data, M_LFSNODE); 491 vp->v_data = NULL; 492 return (0); 493 } 494