efs_vnops.c revision 1.18
1 /* $NetBSD: efs_vnops.c,v 1.18 2009/06/23 19:36:40 elad Exp $ */ 2 3 /* 4 * Copyright (c) 2006 Stephen M. Rumble <rumble (at) ephemeral.org> 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 #include <sys/cdefs.h> 20 __KERNEL_RCSID(0, "$NetBSD: efs_vnops.c,v 1.18 2009/06/23 19:36:40 elad Exp $"); 21 22 #include <sys/param.h> 23 #include <sys/systm.h> 24 #include <sys/proc.h> 25 #include <sys/kernel.h> 26 #include <sys/vnode.h> 27 #include <sys/mount.h> 28 #include <sys/malloc.h> 29 #include <sys/namei.h> 30 #include <sys/dirent.h> 31 #include <sys/lockf.h> 32 #include <sys/unistd.h> 33 #include <sys/buf.h> 34 35 #include <miscfs/genfs/genfs.h> 36 #include <miscfs/genfs/genfs_node.h> 37 #include <miscfs/fifofs/fifo.h> 38 #include <miscfs/specfs/specdev.h> 39 40 #include <fs/efs/efs.h> 41 #include <fs/efs/efs_sb.h> 42 #include <fs/efs/efs_dir.h> 43 #include <fs/efs/efs_genfs.h> 44 #include <fs/efs/efs_mount.h> 45 #include <fs/efs/efs_extent.h> 46 #include <fs/efs/efs_dinode.h> 47 #include <fs/efs/efs_inode.h> 48 #include <fs/efs/efs_subr.h> 49 #include <fs/efs/efs_ihash.h> 50 51 MALLOC_DECLARE(M_EFSTMP); 52 53 /* 54 * Lookup a pathname component in the given directory. 55 * 56 * Returns 0 on success. 57 */ 58 static int 59 efs_lookup(void *v) 60 { 61 struct vop_lookup_args /* { 62 struct vnode *a_dvp; 63 struct vnode **a_vpp; 64 struct componentname *a_cnp; 65 } */ *ap = v; 66 struct componentname *cnp = ap->a_cnp; 67 struct vnode *vp; 68 ino_t ino; 69 int err, nameiop = cnp->cn_nameiop; 70 71 /* ensure that the directory can be accessed first */ 72 err = VOP_ACCESS(ap->a_dvp, VEXEC, cnp->cn_cred); 73 if (err) 74 return (err); 75 76 err = cache_lookup(ap->a_dvp, ap->a_vpp, cnp); 77 if (err != -1) 78 return (err); 79 80 /* 81 * Handle the three lookup types: '.', '..', and everything else. 82 */ 83 if (cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.') { 84 vref(ap->a_dvp); 85 *ap->a_vpp = ap->a_dvp; 86 } else if (cnp->cn_flags & ISDOTDOT) { 87 err = efs_inode_lookup(VFSTOEFS(ap->a_dvp->v_mount), 88 EFS_VTOI(ap->a_dvp), ap->a_cnp, &ino); 89 if (err) 90 return (err); 91 92 VOP_UNLOCK(ap->a_dvp, 0); /* preserve lock order */ 93 94 err = VFS_VGET(ap->a_dvp->v_mount, ino, &vp); 95 if (err) { 96 vn_lock(ap->a_dvp, LK_EXCLUSIVE | LK_RETRY); 97 return (err); 98 } 99 vn_lock(ap->a_dvp, LK_EXCLUSIVE | LK_RETRY); 100 *ap->a_vpp = vp; 101 } else { 102 err = efs_inode_lookup(VFSTOEFS(ap->a_dvp->v_mount), 103 EFS_VTOI(ap->a_dvp), ap->a_cnp, &ino); 104 if (err) { 105 if (err == ENOENT && (cnp->cn_flags & MAKEENTRY) && 106 nameiop != CREATE) 107 cache_enter(ap->a_dvp, NULL, cnp); 108 if (err == ENOENT && (nameiop == CREATE || 109 nameiop == RENAME)) { 110 err = VOP_ACCESS(ap->a_dvp, VWRITE, 111 cnp->cn_cred); 112 if (err) 113 return (err); 114 cnp->cn_flags |= SAVENAME; 115 return (EJUSTRETURN); 116 } 117 return (err); 118 } 119 err = VFS_VGET(ap->a_dvp->v_mount, ino, &vp); 120 if (err) 121 return (err); 122 *ap->a_vpp = vp; 123 } 124 125 if (cnp->cn_flags & MAKEENTRY) 126 cache_enter(ap->a_dvp, *ap->a_vpp, cnp); 127 128 return (0); 129 } 130 131 /* 132 * Determine the accessiblity of a file based on the permissions allowed by the 133 * specified credentials. 134 * 135 * Returns 0 on success. 136 */ 137 static int 138 efs_access(void *v) 139 { 140 struct vop_access_args /* { 141 const struct vnodeop_desc *a_desc; 142 struct vnode *a_vp; 143 int a_mode; 144 struct ucred *a_cred; 145 } */ *ap = v; 146 struct vnode *vp = ap->a_vp; 147 struct efs_inode *eip = EFS_VTOI(vp); 148 149 if ((ap->a_mode & VWRITE) && (vp->v_mount->mnt_flag & MNT_RDONLY)) 150 return (EROFS); 151 152 return (genfs_can_access(vp->v_type, eip->ei_mode, eip->ei_uid, 153 eip->ei_gid, ap->a_mode, ap->a_cred)); 154 } 155 156 /* 157 * Get specific vnode attributes on a file. See vattr(9). 158 * 159 * Returns 0 on success. 160 */ 161 static int 162 efs_getattr(void *v) 163 { 164 struct vop_getattr_args /* { 165 const struct vnodeop_desc *a_desc; 166 struct vnode *a_vp; 167 struct vattr *a_vap; 168 struct ucred *a_cred; 169 } */ *ap = v; 170 171 struct vattr *vap = ap->a_vap; 172 struct efs_inode *eip = EFS_VTOI(ap->a_vp); 173 174 vattr_null(ap->a_vap); 175 vap->va_type = ap->a_vp->v_type; 176 vap->va_mode = eip->ei_mode; 177 vap->va_nlink = eip->ei_nlink; 178 vap->va_uid = eip->ei_uid; 179 vap->va_gid = eip->ei_gid; 180 vap->va_fsid = ap->a_vp->v_mount->mnt_stat.f_fsid; 181 vap->va_fileid = eip->ei_number; 182 vap->va_size = eip->ei_size; 183 184 if (ap->a_vp->v_type == VBLK) 185 vap->va_blocksize = BLKDEV_IOSIZE; 186 else if (ap->a_vp->v_type == VCHR) 187 vap->va_blocksize = MAXBSIZE; 188 else 189 vap->va_blocksize = EFS_BB_SIZE; 190 191 vap->va_atime.tv_sec = eip->ei_atime; 192 vap->va_mtime.tv_sec = eip->ei_mtime; 193 vap->va_ctime.tv_sec = eip->ei_ctime; 194 /* vap->va_birthtime = */ 195 vap->va_gen = eip->ei_gen; 196 vap->va_flags = ap->a_vp->v_vflag | 197 ap->a_vp->v_iflag | ap->a_vp->v_uflag; 198 199 if (ap->a_vp->v_type == VBLK || ap->a_vp->v_type == VCHR) { 200 uint32_t dmaj, dmin; 201 202 if (be16toh(eip->ei_di.di_odev) != EFS_DINODE_ODEV_INVALID) { 203 dmaj = EFS_DINODE_ODEV_MAJ(be16toh(eip->ei_di.di_odev)); 204 dmin = EFS_DINODE_ODEV_MIN(be16toh(eip->ei_di.di_odev)); 205 } else { 206 dmaj = EFS_DINODE_NDEV_MAJ(be32toh(eip->ei_di.di_ndev)); 207 dmin = EFS_DINODE_NDEV_MIN(be32toh(eip->ei_di.di_ndev)); 208 } 209 210 vap->va_rdev = makedev(dmaj, dmin); 211 } 212 213 vap->va_bytes = eip->ei_size; 214 /* vap->va_filerev = */ 215 /* vap->va_vaflags = */ 216 217 return (0); 218 } 219 220 /* 221 * Read a file. 222 * 223 * Returns 0 on success. 224 */ 225 static int 226 efs_read(void *v) 227 { 228 struct vop_read_args /* { 229 const struct vnodeop_desc *a_desc; 230 struct vnode *a_vp; 231 struct uio *a_uio; 232 int a_ioflag; 233 struct ucred *a_cred; 234 } */ *ap = v; 235 struct efs_extent ex; 236 struct efs_extent_iterator exi; 237 struct uio *uio = ap->a_uio; 238 struct efs_inode *eip = EFS_VTOI(ap->a_vp); 239 off_t start; 240 vsize_t len; 241 int err, ret; 242 const int advice = IO_ADV_DECODE(ap->a_ioflag); 243 244 if (ap->a_vp->v_type == VDIR) 245 return (EISDIR); 246 247 if (ap->a_vp->v_type != VREG) 248 return (EINVAL); 249 250 efs_extent_iterator_init(&exi, eip, uio->uio_offset); 251 ret = efs_extent_iterator_next(&exi, &ex); 252 while (ret == 0) { 253 if (uio->uio_offset < 0 || uio->uio_offset >= eip->ei_size || 254 uio->uio_resid == 0) 255 break; 256 257 start = ex.ex_offset * EFS_BB_SIZE; 258 len = ex.ex_length * EFS_BB_SIZE; 259 260 if (!(uio->uio_offset >= start && 261 uio->uio_offset < (start + len))) { 262 ret = efs_extent_iterator_next(&exi, &ex); 263 continue; 264 } 265 266 start = uio->uio_offset - start; 267 268 len = MIN(len - start, uio->uio_resid); 269 len = MIN(len, eip->ei_size - uio->uio_offset); 270 271 err = ubc_uiomove(&ap->a_vp->v_uobj, uio, len, advice, 272 UBC_READ | UBC_PARTIALOK | UBC_UNMAP_FLAG(ap->a_vp)); 273 if (err) { 274 EFS_DPRINTF(("efs_read: uiomove error %d\n", 275 err)); 276 return (err); 277 } 278 } 279 280 return ((ret == -1) ? 0 : ret); 281 } 282 283 static int 284 efs_readdir(void *v) 285 { 286 struct vop_readdir_args /* { 287 const struct vnodeop_desc *a_desc; 288 struct vnode *a_vp; 289 struct uio *a_uio; 290 struct ucred *a_cred; 291 int *a_eofflag; 292 off_t **a_cookies; 293 int *a_ncookies; 294 } */ *ap = v; 295 struct dirent *dp; 296 struct efs_dinode edi; 297 struct efs_extent ex; 298 struct efs_extent_iterator exi; 299 struct buf *bp; 300 struct efs_dirent *de; 301 struct efs_dirblk *db; 302 struct uio *uio = ap->a_uio; 303 struct efs_inode *ei = EFS_VTOI(ap->a_vp); 304 off_t *cookies = NULL; 305 off_t offset; 306 int i, j, err, ret, s, slot, ncookies, maxcookies = 0; 307 308 if (ap->a_vp->v_type != VDIR) 309 return (ENOTDIR); 310 311 if (ap->a_eofflag != NULL) 312 *ap->a_eofflag = false; 313 314 if (ap->a_ncookies != NULL) { 315 ncookies = 0; 316 maxcookies = 317 uio->uio_resid / _DIRENT_MINSIZE((struct dirent *)0); 318 cookies = malloc(maxcookies * sizeof(off_t), M_TEMP, M_WAITOK); 319 } 320 321 dp = malloc(sizeof(struct dirent), M_EFSTMP, M_WAITOK | M_ZERO); 322 323 offset = 0; 324 efs_extent_iterator_init(&exi, ei, 0); 325 while ((ret = efs_extent_iterator_next(&exi, &ex)) == 0) { 326 for (i = 0; i < ex.ex_length; i++) { 327 err = efs_bread(VFSTOEFS(ap->a_vp->v_mount), 328 ex.ex_bn + i, NULL, &bp); 329 if (err) { 330 brelse(bp, 0); 331 goto exit_err; 332 } 333 334 db = (struct efs_dirblk *)bp->b_data; 335 336 if (be16toh(db->db_magic) != EFS_DIRBLK_MAGIC) { 337 printf("efs_readdir: bad dirblk\n"); 338 brelse(bp, 0); 339 continue; 340 } 341 342 for (j = 0; j < db->db_slots; j++) { 343 slot = EFS_DIRENT_OFF_EXPND(db->db_space[j]); 344 if (slot == EFS_DIRBLK_SLOT_FREE) 345 continue; 346 347 if (!EFS_DIRENT_OFF_VALID(slot)) { 348 printf("efs_readdir: bad dirent\n"); 349 continue; 350 } 351 352 de = EFS_DIRBLK_TO_DIRENT(db, slot); 353 s = _DIRENT_RECLEN(dp, de->de_namelen); 354 355 if (offset < uio->uio_offset) { 356 offset += s; 357 continue; 358 } 359 360 /* XXX - shouldn't happen, right? */ 361 if (offset > uio->uio_offset || 362 s > uio->uio_resid) { 363 brelse(bp, 0); 364 goto exit_ok; 365 } 366 367 /* de_namelen is uint8_t, d.d_name is 512b */ 368 KASSERT(sizeof(dp->d_name)-de->de_namelen > 0); 369 dp->d_fileno = be32toh(de->de_inumber); 370 dp->d_reclen = s; 371 dp->d_namlen = de->de_namelen; 372 memcpy(dp->d_name, de->de_name, 373 de->de_namelen); 374 dp->d_name[de->de_namelen] = '\0'; 375 376 /* look up inode to get type */ 377 err = efs_read_inode( 378 VFSTOEFS(ap->a_vp->v_mount), 379 dp->d_fileno, NULL, &edi); 380 if (err) { 381 brelse(bp, 0); 382 goto exit_err; 383 } 384 385 switch (be16toh(edi.di_mode) & EFS_IFMT) { 386 case EFS_IFIFO: 387 dp->d_type = DT_FIFO; 388 break; 389 case EFS_IFCHR: 390 dp->d_type = DT_CHR; 391 break; 392 case EFS_IFDIR: 393 dp->d_type = DT_DIR; 394 break; 395 case EFS_IFBLK: 396 dp->d_type = DT_BLK; 397 break; 398 case EFS_IFREG: 399 dp->d_type = DT_REG; 400 break; 401 case EFS_IFLNK: 402 dp->d_type = DT_LNK; 403 break; 404 case EFS_IFSOCK: 405 dp->d_type = DT_SOCK; 406 break; 407 default: 408 dp->d_type = DT_UNKNOWN; 409 break; 410 } 411 412 err = uiomove(dp, s, uio); 413 if (err) { 414 brelse(bp, 0); 415 goto exit_err; 416 } 417 418 offset += s; 419 420 if (cookies != NULL && maxcookies != 0) { 421 cookies[ncookies++] = offset; 422 if (ncookies == maxcookies) { 423 brelse(bp, 0); 424 goto exit_ok; 425 } 426 } 427 } 428 429 brelse(bp, 0); 430 } 431 } 432 433 if (ret != -1) { 434 err = ret; 435 goto exit_err; 436 } 437 438 if (ap->a_eofflag != NULL) 439 *ap->a_eofflag = true; 440 441 exit_ok: 442 if (cookies != NULL) { 443 *ap->a_cookies = cookies; 444 *ap->a_ncookies = ncookies; 445 } 446 447 uio->uio_offset = offset; 448 449 free(dp, M_EFSTMP); 450 451 return (0); 452 453 exit_err: 454 if (cookies != NULL) 455 free(cookies, M_TEMP); 456 457 free(dp, M_EFSTMP); 458 459 return (err); 460 } 461 462 static int 463 efs_readlink(void *v) 464 { 465 struct vop_readlink_args /* { 466 const struct vnodeop_desc *a_desc; 467 struct vnode *a_vp; 468 struct uio *a_uio; 469 struct ucred *a_cred; 470 } */ *ap = v; 471 struct uio *uio = ap->a_uio; 472 struct efs_inode *eip = EFS_VTOI(ap->a_vp); 473 char *buf; 474 size_t len; 475 int err, i; 476 477 if ((eip->ei_mode & EFS_IFMT) != EFS_IFLNK) 478 return (EINVAL); 479 480 if (uio->uio_resid < 1) 481 return (EINVAL); 482 483 buf = malloc(eip->ei_size + 1, M_EFSTMP, M_ZERO | M_WAITOK); 484 485 /* symlinks are either inlined in the inode, or in extents */ 486 if (eip->ei_numextents == 0) { 487 if (eip->ei_size > sizeof(eip->ei_di.di_symlink)) { 488 EFS_DPRINTF(("efs_readlink: too big for inline\n")); 489 free(buf, M_EFSTMP); 490 return (EBADF); 491 } 492 493 memcpy(buf, eip->ei_di.di_symlink, eip->ei_size); 494 len = MIN(uio->uio_resid, eip->ei_size + 1); 495 } else { 496 struct efs_extent_iterator exi; 497 struct efs_extent ex; 498 struct buf *bp; 499 int resid, off, ret; 500 501 off = 0; 502 resid = eip->ei_size; 503 504 efs_extent_iterator_init(&exi, eip, 0); 505 while ((ret = efs_extent_iterator_next(&exi, &ex)) == 0) { 506 for (i = 0; i < ex.ex_length; i++) { 507 err = efs_bread(VFSTOEFS(ap->a_vp->v_mount), 508 ex.ex_bn + i, NULL, &bp); 509 if (err) { 510 brelse(bp, 0); 511 free(buf, M_EFSTMP); 512 return (err); 513 } 514 515 len = MIN(resid, bp->b_bcount); 516 memcpy(buf + off, bp->b_data, len); 517 brelse(bp, 0); 518 519 off += len; 520 resid -= len; 521 522 if (resid == 0) 523 break; 524 } 525 526 if (resid == 0) 527 break; 528 } 529 530 if (ret != 0 && ret != -1) { 531 free(buf, M_EFSTMP); 532 return (ret); 533 } 534 535 len = off + 1; 536 } 537 538 KASSERT(len >= 1 && len <= (eip->ei_size + 1)); 539 buf[len - 1] = '\0'; 540 err = uiomove(buf, len, uio); 541 free(buf, M_EFSTMP); 542 543 return (err); 544 } 545 546 /* 547 * Release an inactive vnode. The vnode _must_ be unlocked on return. 548 * It is either nolonger being used by the kernel, or an unmount is being 549 * forced. 550 * 551 * Returns 0 on success. 552 */ 553 static int 554 efs_inactive(void *v) 555 { 556 struct vop_inactive_args /* { 557 const struct vnodeop_desc *a_desc; 558 struct vnode *a_vp; 559 bool *a_recycle 560 } */ *ap = v; 561 struct efs_inode *eip = EFS_VTOI(ap->a_vp); 562 563 *ap->a_recycle = (eip->ei_mode == 0); 564 VOP_UNLOCK(ap->a_vp, 0); 565 566 return (0); 567 } 568 569 static int 570 efs_reclaim(void *v) 571 { 572 struct vop_reclaim_args /* { 573 const struct vnodeop_desc *a_desc; 574 struct vnode *a_vp; 575 } */ *ap = v; 576 struct vnode *vp = ap->a_vp; 577 578 efs_ihashrem(EFS_VTOI(vp)); 579 cache_purge(vp); 580 genfs_node_destroy(vp); 581 pool_put(&efs_inode_pool, vp->v_data); 582 vp->v_data = NULL; 583 584 return (0); 585 } 586 587 static int 588 efs_bmap(void *v) 589 { 590 struct vop_bmap_args /* { 591 const struct vnodeop_desc *a_desc; 592 struct vnode *a_vp; 593 daddr_t a_bn; 594 struct vnode **a_vpp; 595 daddr_t *a_bnp; 596 int *a_runp; 597 } */ *ap = v; 598 struct efs_extent ex; 599 struct efs_extent_iterator exi; 600 struct vnode *vp = ap->a_vp; 601 struct efs_inode *eip = EFS_VTOI(vp); 602 bool found; 603 int ret; 604 605 if (ap->a_vpp != NULL) 606 *ap->a_vpp = VFSTOEFS(vp->v_mount)->em_devvp; 607 608 found = false; 609 efs_extent_iterator_init(&exi, eip, ap->a_bn * EFS_BB_SIZE); 610 while ((ret = efs_extent_iterator_next(&exi, &ex)) == 0) { 611 if (ap->a_bn >= ex.ex_offset && 612 ap->a_bn < (ex.ex_offset + ex.ex_length)) { 613 found = true; 614 break; 615 } 616 } 617 618 KASSERT(!found || (found && ret == 0)); 619 620 if (!found) { 621 EFS_DPRINTF(("efs_bmap: ap->a_bn not in extents\n")); 622 return ((ret == -1) ? EIO : ret); 623 } 624 625 if (ex.ex_magic != EFS_EXTENT_MAGIC) { 626 EFS_DPRINTF(("efs_bmap: exn.ex_magic != EFS_EXTENT_MAGIC\n")); 627 return (EIO); 628 } 629 630 if (ap->a_bn < ex.ex_offset) { 631 EFS_DPRINTF(("efs_bmap: ap->a_bn < exn.ex_offset\n")); 632 return (EIO); 633 } 634 635 KASSERT(ap->a_bn >= ex.ex_offset); 636 KASSERT(ex.ex_length > ap->a_bn - ex.ex_offset); 637 638 *ap->a_bnp = ex.ex_bn + (ap->a_bn - ex.ex_offset); 639 if (ap->a_runp != NULL) 640 *ap->a_runp = ex.ex_length - (ap->a_bn - ex.ex_offset) - 1; 641 642 return (0); 643 } 644 645 static int 646 efs_strategy(void *v) 647 { 648 struct vop_strategy_args /* { 649 const struct vnodeop_desc *a_desc; 650 struct vnode *a_vp; 651 struct buf *a_bp; 652 } */ *ap = v; 653 struct vnode *vp = ap->a_vp; 654 struct buf *bp = ap->a_bp; 655 int error; 656 657 if (vp == NULL) { 658 bp->b_error = EIO; 659 biodone(bp); 660 return (EIO); 661 } 662 663 if (bp->b_blkno == bp->b_lblkno) { 664 error = VOP_BMAP(vp, bp->b_lblkno, NULL, &bp->b_blkno, NULL); 665 if (error) { 666 bp->b_error = error; 667 biodone(bp); 668 return (error); 669 } 670 if ((long)bp->b_blkno == -1) 671 clrbuf(bp); 672 } 673 674 if ((long)bp->b_blkno == -1) { 675 biodone(bp); 676 return (0); 677 } 678 679 return (VOP_STRATEGY(VFSTOEFS(vp->v_mount)->em_devvp, bp)); 680 } 681 682 static int 683 efs_print(void *v) 684 { 685 struct vop_print_args /* { 686 const struct vnodeop_desc *a_desc; 687 struct vnode *a_vp; 688 } */ *ap = v; 689 struct efs_inode *eip = EFS_VTOI(ap->a_vp); 690 691 printf( "efs_inode (ino %lu):\n" 692 " ei_mode: %07o\n" 693 " ei_nlink: %d\n" 694 " ei_uid: %d\n" 695 " ei_gid: %d\n" 696 " ei_size: %d\n" 697 " ei_atime: %d\n" 698 " ei_mtime: %d\n" 699 " ei_ctime: %d\n" 700 " ei_gen: %d\n" 701 " ei_numextents: %d\n" 702 " ei_version: %d\n", 703 (unsigned long)eip->ei_number, 704 (unsigned int)eip->ei_mode, 705 eip->ei_nlink, 706 eip->ei_uid, 707 eip->ei_gid, 708 eip->ei_size, 709 (int32_t)eip->ei_atime, 710 (int32_t)eip->ei_mtime, 711 (int32_t)eip->ei_ctime, 712 eip->ei_gen, 713 eip->ei_numextents, 714 eip->ei_version); 715 716 return (0); 717 } 718 719 static int 720 efs_pathconf(void *v) 721 { 722 struct vop_pathconf_args /* { 723 const struct vnodeop_desc *a_desc; 724 struct vnode *a_vp; 725 int a_name; 726 register_t *a_retval; 727 } */ *ap = v; 728 729 /* IRIX 4 values */ 730 switch (ap->a_name) { 731 case _PC_LINK_MAX: 732 *ap->a_retval = 30000; 733 break; 734 case _PC_NAME_MAX: 735 *ap->a_retval = 255; 736 break; 737 case _PC_PATH_MAX: 738 *ap->a_retval = 1024; 739 break; 740 case _PC_NO_TRUNC: 741 *ap->a_retval = 1; 742 break; 743 case _PC_CHOWN_RESTRICTED: 744 *ap->a_retval = 1; 745 break; 746 case _PC_SYNC_IO: 747 *ap->a_retval = 1; 748 break; 749 case _PC_FILESIZEBITS: 750 *ap->a_retval = 32; 751 break; 752 default: 753 return (EINVAL); 754 } 755 756 return (0); 757 } 758 759 static int 760 efs_advlock(void *v) 761 { 762 struct vop_advlock_args /* { 763 const struct vnodeop_desc *a_desc; 764 struct vnode *a_vp; 765 void *a_id; 766 int a_op; 767 struct flock *a_fl; 768 int a_flags; 769 } */ *ap = v; 770 struct efs_inode *eip = EFS_VTOI(ap->a_vp); 771 772 return (lf_advlock(ap, &eip->ei_lockf, eip->ei_size)); 773 } 774 775 /* Global vfs data structures for efs */ 776 int (**efs_vnodeop_p)(void *); 777 const struct vnodeopv_entry_desc efs_vnodeop_entries[] = { 778 { &vop_default_desc, vn_default_error}, /* error handler */ 779 { &vop_lookup_desc, efs_lookup }, /* lookup */ 780 { &vop_create_desc, genfs_eopnotsupp}, /* create */ 781 { &vop_mknod_desc, genfs_eopnotsupp}, /* mknod */ 782 { &vop_open_desc, genfs_nullop }, /* open */ 783 { &vop_close_desc, genfs_nullop }, /* close */ 784 { &vop_access_desc, efs_access }, /* access */ 785 { &vop_getattr_desc, efs_getattr }, /* getattr */ 786 { &vop_setattr_desc, genfs_eopnotsupp}, /* setattr */ 787 { &vop_read_desc, efs_read }, /* read */ 788 { &vop_write_desc, genfs_eopnotsupp}, /* write */ 789 { &vop_ioctl_desc, genfs_enoioctl }, /* ioctl */ 790 { &vop_fcntl_desc, genfs_fcntl }, /* fcntl */ 791 { &vop_poll_desc, genfs_poll }, /* poll */ 792 { &vop_kqfilter_desc, genfs_kqfilter }, /* kqfilter */ 793 { &vop_revoke_desc, genfs_revoke }, /* revoke */ 794 { &vop_mmap_desc, genfs_mmap }, /* mmap */ 795 { &vop_fsync_desc, genfs_eopnotsupp}, /* fsync */ 796 { &vop_seek_desc, genfs_seek }, /* seek */ 797 { &vop_remove_desc, genfs_eopnotsupp}, /* remove */ 798 { &vop_link_desc, genfs_eopnotsupp}, /* link */ 799 { &vop_rename_desc, genfs_eopnotsupp}, /* rename */ 800 { &vop_mkdir_desc, genfs_eopnotsupp}, /* mkdir */ 801 { &vop_rmdir_desc, genfs_eopnotsupp}, /* rmdir */ 802 { &vop_symlink_desc, genfs_eopnotsupp}, /* symlink */ 803 { &vop_readdir_desc, efs_readdir }, /* readdir */ 804 { &vop_readlink_desc, efs_readlink }, /* readlink */ 805 { &vop_abortop_desc, genfs_abortop }, /* abortop */ 806 { &vop_inactive_desc, efs_inactive }, /* inactive */ 807 { &vop_reclaim_desc, efs_reclaim }, /* reclaim */ 808 { &vop_lock_desc, genfs_lock, }, /* lock */ 809 { &vop_unlock_desc, genfs_unlock, }, /* unlock */ 810 { &vop_islocked_desc, genfs_islocked, }, /* islocked */ 811 { &vop_bmap_desc, efs_bmap }, /* bmap */ 812 { &vop_print_desc, efs_print }, /* print */ 813 { &vop_pathconf_desc, efs_pathconf }, /* pathconf */ 814 { &vop_advlock_desc, efs_advlock }, /* advlock */ 815 /* blkatoff */ 816 /* valloc */ 817 /* balloc */ 818 /* vfree */ 819 /* truncate */ 820 /* whiteout */ 821 { &vop_getpages_desc, genfs_getpages }, /* getpages */ 822 { &vop_putpages_desc, genfs_putpages }, /* putpages */ 823 { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ 824 { &vop_strategy_desc, efs_strategy }, /* strategy */ 825 { NULL, NULL } 826 }; 827 const struct vnodeopv_desc efs_vnodeop_opv_desc = { 828 &efs_vnodeop_p, 829 efs_vnodeop_entries 830 }; 831 832 int (**efs_specop_p)(void *); 833 const struct vnodeopv_entry_desc efs_specop_entries[] = { 834 { &vop_default_desc, vn_default_error}, /* error handler */ 835 { &vop_lookup_desc, spec_lookup }, /* lookup */ 836 { &vop_create_desc, spec_create }, /* create */ 837 { &vop_mknod_desc, spec_mknod }, /* mknod */ 838 { &vop_open_desc, spec_open }, /* open */ 839 { &vop_close_desc, spec_close }, /* close */ 840 { &vop_access_desc, efs_access }, /* access */ 841 { &vop_getattr_desc, efs_getattr }, /* getattr */ 842 { &vop_setattr_desc, genfs_eopnotsupp}, /* setattr */ 843 { &vop_read_desc, spec_read }, /* read */ 844 { &vop_write_desc, spec_write }, /* write */ 845 { &vop_ioctl_desc, spec_ioctl }, /* ioctl */ 846 { &vop_fcntl_desc, genfs_fcntl }, /* fcntl */ 847 { &vop_poll_desc, spec_poll }, /* poll */ 848 { &vop_kqfilter_desc, spec_kqfilter }, /* kqfilter */ 849 { &vop_revoke_desc, spec_revoke }, /* revoke */ 850 { &vop_mmap_desc, spec_mmap }, /* mmap */ 851 { &vop_fsync_desc, spec_fsync }, /* fsync */ 852 { &vop_seek_desc, spec_seek }, /* seek */ 853 { &vop_remove_desc, spec_remove }, /* remove */ 854 { &vop_link_desc, spec_link }, /* link */ 855 { &vop_rename_desc, spec_rename }, /* rename */ 856 { &vop_mkdir_desc, spec_mkdir }, /* mkdir */ 857 { &vop_rmdir_desc, spec_rmdir }, /* rmdir */ 858 { &vop_symlink_desc, spec_symlink }, /* symlink */ 859 { &vop_readdir_desc, spec_readdir }, /* readdir */ 860 { &vop_readlink_desc, spec_readlink }, /* readlink */ 861 { &vop_abortop_desc, spec_abortop }, /* abortop */ 862 { &vop_inactive_desc, efs_inactive }, /* inactive */ 863 { &vop_reclaim_desc, efs_reclaim }, /* reclaim */ 864 { &vop_lock_desc, genfs_lock, }, /* lock */ 865 { &vop_unlock_desc, genfs_unlock, }, /* unlock */ 866 { &vop_islocked_desc, genfs_islocked, }, /* islocked */ 867 { &vop_bmap_desc, spec_bmap }, /* bmap */ 868 { &vop_print_desc, efs_print }, /* print */ 869 { &vop_pathconf_desc, spec_pathconf }, /* pathconf */ 870 { &vop_advlock_desc, spec_advlock }, /* advlock */ 871 /* blkatoff */ 872 /* valloc */ 873 /* balloc */ 874 /* vfree */ 875 /* truncate */ 876 /* whiteout */ 877 { &vop_getpages_desc, spec_getpages }, /* getpages */ 878 { &vop_putpages_desc, spec_putpages }, /* putpages */ 879 { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ 880 { &vop_strategy_desc, spec_strategy }, /* strategy */ 881 { NULL, NULL } 882 }; 883 const struct vnodeopv_desc efs_specop_opv_desc = { 884 &efs_specop_p, 885 efs_specop_entries 886 }; 887 888 int (**efs_fifoop_p)(void *); 889 const struct vnodeopv_entry_desc efs_fifoop_entries[] = { 890 { &vop_default_desc, vn_default_error}, /* error handler */ 891 { &vop_lookup_desc, fifo_lookup }, /* lookup */ 892 { &vop_create_desc, fifo_create }, /* create */ 893 { &vop_mknod_desc, fifo_mknod }, /* mknod */ 894 { &vop_open_desc, fifo_open }, /* open */ 895 { &vop_close_desc, fifo_close }, /* close */ 896 { &vop_access_desc, efs_access }, /* access */ 897 { &vop_getattr_desc, efs_getattr }, /* getattr */ 898 { &vop_setattr_desc, genfs_eopnotsupp}, /* setattr */ 899 { &vop_read_desc, fifo_read }, /* read */ 900 { &vop_write_desc, fifo_write }, /* write */ 901 { &vop_ioctl_desc, fifo_ioctl }, /* ioctl */ 902 { &vop_fcntl_desc, genfs_fcntl }, /* fcntl */ 903 { &vop_poll_desc, fifo_poll }, /* poll */ 904 { &vop_kqfilter_desc, fifo_kqfilter }, /* kqfilter */ 905 { &vop_revoke_desc, fifo_revoke }, /* revoke */ 906 { &vop_mmap_desc, fifo_mmap }, /* mmap */ 907 { &vop_fsync_desc, fifo_fsync }, /* fsync */ 908 { &vop_seek_desc, fifo_seek }, /* seek */ 909 { &vop_remove_desc, fifo_remove }, /* remove */ 910 { &vop_link_desc, fifo_link }, /* link */ 911 { &vop_rename_desc, fifo_rename }, /* rename */ 912 { &vop_mkdir_desc, fifo_mkdir }, /* mkdir */ 913 { &vop_rmdir_desc, fifo_rmdir }, /* rmdir */ 914 { &vop_symlink_desc, fifo_symlink }, /* symlink */ 915 { &vop_readdir_desc, fifo_readdir }, /* readdir */ 916 { &vop_readlink_desc, fifo_readlink }, /* readlink */ 917 { &vop_abortop_desc, fifo_abortop }, /* abortop */ 918 { &vop_inactive_desc, efs_inactive }, /* inactive */ 919 { &vop_reclaim_desc, efs_reclaim }, /* reclaim */ 920 { &vop_lock_desc, genfs_lock, }, /* lock */ 921 { &vop_unlock_desc, genfs_unlock, }, /* unlock */ 922 { &vop_islocked_desc, genfs_islocked, }, /* islocked */ 923 { &vop_bmap_desc, fifo_bmap }, /* bmap */ 924 { &vop_print_desc, efs_print }, /* print */ 925 { &vop_pathconf_desc, fifo_pathconf }, /* pathconf */ 926 { &vop_advlock_desc, fifo_advlock }, /* advlock */ 927 /* blkatoff */ 928 /* valloc */ 929 /* balloc */ 930 /* vfree */ 931 /* truncate */ 932 /* whiteout */ 933 { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ 934 { &vop_strategy_desc, fifo_strategy }, /* strategy */ 935 { NULL, NULL } 936 }; 937 const struct vnodeopv_desc efs_fifoop_opv_desc = { 938 &efs_fifoop_p, 939 efs_fifoop_entries 940 }; 941
Indexes created Sat Oct 18 08:10:09 GMT 2025