efs_vnops.c revision 1.6.8.6
1 /* $NetBSD: efs_vnops.c,v 1.6.8.6 2008/02/04 09:23:44 yamt 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 1.6.8.6 2008/02/04 09:23:44 yamt 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 34 #include <miscfs/genfs/genfs.h> 35 #include <miscfs/genfs/genfs_node.h> 36 37 #include <fs/efs/efs.h> 38 #include <fs/efs/efs_sb.h> 39 #include <fs/efs/efs_dir.h> 40 #include <fs/efs/efs_genfs.h> 41 #include <fs/efs/efs_mount.h> 42 #include <fs/efs/efs_extent.h> 43 #include <fs/efs/efs_dinode.h> 44 #include <fs/efs/efs_inode.h> 45 #include <fs/efs/efs_subr.h> 46 #include <fs/efs/efs_ihash.h> 47 48 MALLOC_DECLARE(M_EFSTMP); 49 50 /* 51 * Lookup a pathname component in the given directory. 52 * 53 * Returns 0 on success. 54 */ 55 static int 56 efs_lookup(void *v) 57 { 58 struct vop_lookup_args /* { 59 struct vnode *a_dvp; 60 struct vnode **a_vpp; 61 struct componentname *a_cnp; 62 } */ *ap = v; 63 struct componentname *cnp = ap->a_cnp; 64 struct vnode *vp; 65 ino_t ino; 66 int err, nameiop = cnp->cn_nameiop; 67 68 /* ensure that the directory can be accessed first */ 69 err = VOP_ACCESS(ap->a_dvp, VEXEC, cnp->cn_cred); 70 if (err) 71 return (err); 72 73 err = cache_lookup(ap->a_dvp, ap->a_vpp, cnp); 74 if (err != -1) 75 return (err); 76 77 /* 78 * Handle the three lookup types: '.', '..', and everything else. 79 */ 80 if (cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.') { 81 vref(ap->a_dvp); 82 *ap->a_vpp = ap->a_dvp; 83 } else if (cnp->cn_flags & ISDOTDOT) { 84 err = efs_inode_lookup(VFSTOEFS(ap->a_dvp->v_mount), 85 EFS_VTOI(ap->a_dvp), ap->a_cnp, &ino); 86 if (err) 87 return (err); 88 89 VOP_UNLOCK(ap->a_dvp, 0); /* preserve lock order */ 90 91 err = VFS_VGET(ap->a_dvp->v_mount, ino, &vp); 92 if (err) { 93 vn_lock(ap->a_dvp, LK_EXCLUSIVE | LK_RETRY); 94 return (err); 95 } 96 vn_lock(ap->a_dvp, LK_EXCLUSIVE | LK_RETRY); 97 *ap->a_vpp = vp; 98 } else { 99 err = efs_inode_lookup(VFSTOEFS(ap->a_dvp->v_mount), 100 EFS_VTOI(ap->a_dvp), ap->a_cnp, &ino); 101 if (err) { 102 if (err == ENOENT && (cnp->cn_flags & MAKEENTRY) && 103 nameiop != CREATE) 104 cache_enter(ap->a_dvp, NULL, cnp); 105 if (err == ENOENT && (nameiop == CREATE || 106 nameiop == RENAME)) { 107 err = VOP_ACCESS(ap->a_dvp, VWRITE, 108 cnp->cn_cred); 109 if (err) 110 return (err); 111 cnp->cn_flags |= SAVENAME; 112 return (EJUSTRETURN); 113 } 114 return (err); 115 } 116 err = VFS_VGET(ap->a_dvp->v_mount, ino, &vp); 117 if (err) 118 return (err); 119 *ap->a_vpp = vp; 120 } 121 122 if (cnp->cn_flags & MAKEENTRY) 123 cache_enter(ap->a_dvp, *ap->a_vpp, cnp); 124 125 return (0); 126 } 127 128 /* 129 * Determine the accessiblity of a file based on the permissions allowed by the 130 * specified credentials. 131 * 132 * Returns 0 on success. 133 */ 134 static int 135 efs_access(void *v) 136 { 137 struct vop_access_args /* { 138 const struct vnodeop_desc *a_desc; 139 struct vnode *a_vp; 140 int a_mode; 141 struct ucred *a_cred; 142 } */ *ap = v; 143 struct vnode *vp = ap->a_vp; 144 struct efs_inode *eip = EFS_VTOI(vp); 145 146 if ((ap->a_mode & VWRITE) && (vp->v_mount->mnt_flag & MNT_RDONLY)) 147 return (EROFS); 148 149 return (vaccess(vp->v_type, eip->ei_mode, eip->ei_uid, eip->ei_gid, 150 ap->a_mode, ap->a_cred)); 151 } 152 153 /* 154 * Get specific vnode attributes on a file. See vattr(9). 155 * 156 * Returns 0 on success. 157 */ 158 static int 159 efs_getattr(void *v) 160 { 161 struct vop_getattr_args /* { 162 const struct vnodeop_desc *a_desc; 163 struct vnode *a_vp; 164 struct vattr *a_vap; 165 struct ucred *a_cred; 166 } */ *ap = v; 167 168 struct vattr *vap = ap->a_vap; 169 struct efs_inode *eip = EFS_VTOI(ap->a_vp); 170 171 vattr_null(ap->a_vap); 172 vap->va_type = ap->a_vp->v_type; 173 vap->va_mode = eip->ei_mode; 174 vap->va_nlink = eip->ei_nlink; 175 vap->va_uid = eip->ei_uid; 176 vap->va_gid = eip->ei_gid; 177 vap->va_fsid = ap->a_vp->v_mount->mnt_stat.f_fsid; 178 vap->va_fileid = eip->ei_number; 179 vap->va_size = eip->ei_size; 180 181 if (ap->a_vp->v_type == VBLK) 182 vap->va_blocksize = BLKDEV_IOSIZE; 183 else if (ap->a_vp->v_type == VCHR) 184 vap->va_blocksize = MAXBSIZE; 185 else 186 vap->va_blocksize = EFS_BB_SIZE; 187 188 vap->va_atime.tv_sec = eip->ei_atime; 189 vap->va_mtime.tv_sec = eip->ei_mtime; 190 vap->va_ctime.tv_sec = eip->ei_ctime; 191 /* vap->va_birthtime = */ 192 vap->va_gen = eip->ei_gen; 193 vap->va_flags = ap->a_vp->v_vflag | 194 ap->a_vp->v_iflag | ap->a_vp->v_uflag; 195 196 if (ap->a_vp->v_type == VBLK || ap->a_vp->v_type == VCHR) { 197 uint32_t dmaj, dmin; 198 199 if (be16toh(eip->ei_di.di_odev) != EFS_DINODE_ODEV_INVALID) { 200 dmaj = EFS_DINODE_ODEV_MAJ(be16toh(eip->ei_di.di_odev)); 201 dmin = EFS_DINODE_ODEV_MIN(be16toh(eip->ei_di.di_odev)); 202 } else { 203 dmaj = EFS_DINODE_NDEV_MAJ(be32toh(eip->ei_di.di_ndev)); 204 dmin = EFS_DINODE_NDEV_MIN(be32toh(eip->ei_di.di_ndev)); 205 } 206 207 vap->va_rdev = makedev(dmaj, dmin); 208 } 209 210 vap->va_bytes = eip->ei_size; 211 /* vap->va_filerev = */ 212 /* vap->va_vaflags = */ 213 214 return (0); 215 } 216 217 /* 218 * Read a file. 219 * 220 * Returns 0 on success. 221 */ 222 static int 223 efs_read(void *v) 224 { 225 struct vop_read_args /* { 226 const struct vnodeop_desc *a_desc; 227 struct vnode *a_vp; 228 struct uio *a_uio; 229 int a_ioflag; 230 struct ucred *a_cred; 231 } */ *ap = v; 232 struct efs_extent ex; 233 struct efs_extent_iterator exi; 234 void *win; 235 struct uio *uio = ap->a_uio; 236 struct efs_inode *eip = EFS_VTOI(ap->a_vp); 237 off_t start; 238 vsize_t len; 239 int err, ret, flags; 240 const int advice = IO_ADV_DECODE(ap->a_ioflag); 241 242 if (ap->a_vp->v_type == VDIR) 243 return (EISDIR); 244 245 if (ap->a_vp->v_type != VREG) 246 return (EINVAL); 247 248 efs_extent_iterator_init(&exi, eip, uio->uio_offset); 249 ret = efs_extent_iterator_next(&exi, &ex); 250 while (ret == 0) { 251 if (uio->uio_offset < 0 || uio->uio_offset >= eip->ei_size || 252 uio->uio_resid == 0) 253 break; 254 255 start = ex.ex_offset * EFS_BB_SIZE; 256 len = ex.ex_length * EFS_BB_SIZE; 257 258 if (!(uio->uio_offset >= start && 259 uio->uio_offset < (start + len))) { 260 ret = efs_extent_iterator_next(&exi, &ex); 261 continue; 262 } 263 264 start = uio->uio_offset - start; 265 266 len = MIN(len - start, uio->uio_resid); 267 len = MIN(len, eip->ei_size - uio->uio_offset); 268 269 win = ubc_alloc(&ap->a_vp->v_uobj, uio->uio_offset, 270 &len, advice, UBC_READ); 271 272 flags = UBC_WANT_UNMAP(ap->a_vp) ? UBC_UNMAP : 0; 273 274 err = uiomove(win, len, uio); 275 ubc_release(win, flags); 276 if (err) { 277 EFS_DPRINTF(("efs_read: uiomove error %d\n", 278 err)); 279 return (err); 280 } 281 } 282 283 return ((ret == -1) ? 0 : ret); 284 } 285 286 static int 287 efs_readdir(void *v) 288 { 289 struct vop_readdir_args /* { 290 const struct vnodeop_desc *a_desc; 291 struct vnode *a_vp; 292 struct uio *a_uio; 293 struct ucred *a_cred; 294 int *a_eofflag; 295 off_t **a_cookies; 296 int *a_ncookies; 297 } */ *ap = v; 298 struct dirent *dp; 299 struct efs_dinode edi; 300 struct efs_extent ex; 301 struct efs_extent_iterator exi; 302 struct buf *bp; 303 struct efs_dirent *de; 304 struct efs_dirblk *db; 305 struct uio *uio = ap->a_uio; 306 struct efs_inode *ei = EFS_VTOI(ap->a_vp); 307 off_t *cookies = NULL; 308 off_t offset; 309 int i, j, err, ret, s, slot, ncookies, maxcookies = 0; 310 311 if (ap->a_vp->v_type != VDIR) 312 return (ENOTDIR); 313 314 if (ap->a_eofflag != NULL) 315 *ap->a_eofflag = false; 316 317 if (ap->a_ncookies != NULL) { 318 ncookies = 0; 319 maxcookies = 320 uio->uio_resid / _DIRENT_MINSIZE((struct dirent *)0); 321 cookies = malloc(maxcookies * sizeof(off_t), M_TEMP, M_WAITOK); 322 } 323 324 dp = malloc(sizeof(struct dirent), M_EFSTMP, M_WAITOK | M_ZERO); 325 326 offset = 0; 327 efs_extent_iterator_init(&exi, ei, 0); 328 while ((ret = efs_extent_iterator_next(&exi, &ex)) == 0) { 329 for (i = 0; i < ex.ex_length; i++) { 330 err = efs_bread(VFSTOEFS(ap->a_vp->v_mount), 331 ex.ex_bn + i, NULL, &bp); 332 if (err) { 333 brelse(bp, 0); 334 goto exit_err; 335 } 336 337 db = (struct efs_dirblk *)bp->b_data; 338 339 if (be16toh(db->db_magic) != EFS_DIRBLK_MAGIC) { 340 printf("efs_readdir: bad dirblk\n"); 341 brelse(bp, 0); 342 continue; 343 } 344 345 for (j = 0; j < db->db_slots; j++) { 346 slot = EFS_DIRENT_OFF_EXPND(db->db_space[j]); 347 if (slot == EFS_DIRBLK_SLOT_FREE) 348 continue; 349 350 if (!EFS_DIRENT_OFF_VALID(slot)) { 351 printf("efs_readdir: bad dirent\n"); 352 continue; 353 } 354 355 de = EFS_DIRBLK_TO_DIRENT(db, slot); 356 s = _DIRENT_RECLEN(dp, de->de_namelen); 357 358 if (offset < uio->uio_offset) { 359 offset += s; 360 continue; 361 } 362 363 /* XXX - shouldn't happen, right? */ 364 if (offset > uio->uio_offset || 365 s > uio->uio_resid) { 366 brelse(bp, 0); 367 goto exit_ok; 368 } 369 370 /* de_namelen is uint8_t, d.d_name is 512b */ 371 KASSERT(sizeof(dp->d_name)-de->de_namelen > 0); 372 dp->d_fileno = be32toh(de->de_inumber); 373 dp->d_reclen = s; 374 dp->d_namlen = de->de_namelen; 375 memcpy(dp->d_name, de->de_name, 376 de->de_namelen); 377 dp->d_name[de->de_namelen] = '\0'; 378 379 /* look up inode to get type */ 380 err = efs_read_inode( 381 VFSTOEFS(ap->a_vp->v_mount), 382 dp->d_fileno, NULL, &edi); 383 if (err) { 384 brelse(bp, 0); 385 goto exit_err; 386 } 387 388 switch (be16toh(edi.di_mode) & EFS_IFMT) { 389 case EFS_IFIFO: 390 dp->d_type = DT_FIFO; 391 break; 392 case EFS_IFCHR: 393 dp->d_type = DT_CHR; 394 break; 395 case EFS_IFDIR: 396 dp->d_type = DT_DIR; 397 break; 398 case EFS_IFBLK: 399 dp->d_type = DT_BLK; 400 break; 401 case EFS_IFREG: 402 dp->d_type = DT_REG; 403 break; 404 case EFS_IFLNK: 405 dp->d_type = DT_LNK; 406 break; 407 case EFS_IFSOCK: 408 dp->d_type = DT_SOCK; 409 break; 410 default: 411 dp->d_type = DT_UNKNOWN; 412 break; 413 } 414 415 err = uiomove(dp, s, uio); 416 if (err) { 417 brelse(bp, 0); 418 goto exit_err; 419 } 420 421 offset += s; 422 423 if (cookies != NULL && maxcookies != 0) { 424 cookies[ncookies++] = offset; 425 if (ncookies == maxcookies) { 426 brelse(bp, 0); 427 goto exit_ok; 428 } 429 } 430 } 431 432 brelse(bp, 0); 433 } 434 } 435 436 if (ret != -1) { 437 err = ret; 438 goto exit_err; 439 } 440 441 if (ap->a_eofflag != NULL) 442 *ap->a_eofflag = true; 443 444 exit_ok: 445 if (cookies != NULL) { 446 *ap->a_cookies = cookies; 447 *ap->a_ncookies = ncookies; 448 } 449 450 uio->uio_offset = offset; 451 452 free(dp, M_EFSTMP); 453 454 return (0); 455 456 exit_err: 457 if (cookies != NULL) 458 free(cookies, M_TEMP); 459 460 free(dp, M_EFSTMP); 461 462 return (err); 463 } 464 465 static int 466 efs_readlink(void *v) 467 { 468 struct vop_readlink_args /* { 469 const struct vnodeop_desc *a_desc; 470 struct vnode *a_vp; 471 struct uio *a_uio; 472 struct ucred *a_cred; 473 } */ *ap = v; 474 struct uio *uio = ap->a_uio; 475 struct efs_inode *eip = EFS_VTOI(ap->a_vp); 476 char *buf; 477 size_t len; 478 int err, i; 479 480 if ((eip->ei_mode & EFS_IFMT) != EFS_IFLNK) 481 return (EINVAL); 482 483 if (uio->uio_resid < 1) 484 return (EINVAL); 485 486 buf = malloc(eip->ei_size + 1, M_EFSTMP, M_ZERO | M_WAITOK); 487 488 /* symlinks are either inlined in the inode, or in extents */ 489 if (eip->ei_numextents == 0) { 490 if (eip->ei_size > sizeof(eip->ei_di.di_symlink)) { 491 EFS_DPRINTF(("efs_readlink: too big for inline\n")); 492 free(buf, M_EFSTMP); 493 return (EBADF); 494 } 495 496 memcpy(buf, eip->ei_di.di_symlink, eip->ei_size); 497 len = MIN(uio->uio_resid, eip->ei_size + 1); 498 } else { 499 struct efs_extent_iterator exi; 500 struct efs_extent ex; 501 struct buf *bp; 502 int resid, off, ret; 503 504 off = 0; 505 resid = eip->ei_size; 506 507 efs_extent_iterator_init(&exi, eip, 0); 508 while ((ret = efs_extent_iterator_next(&exi, &ex)) == 0) { 509 for (i = 0; i < ex.ex_length; i++) { 510 err = efs_bread(VFSTOEFS(ap->a_vp->v_mount), 511 ex.ex_bn + i, NULL, &bp); 512 if (err) { 513 brelse(bp, 0); 514 free(buf, M_EFSTMP); 515 return (err); 516 } 517 518 len = MIN(resid, bp->b_bcount); 519 memcpy(buf + off, bp->b_data, len); 520 brelse(bp, 0); 521 522 off += len; 523 resid -= len; 524 525 if (resid == 0) 526 break; 527 } 528 529 if (resid == 0) 530 break; 531 } 532 533 if (ret != 0 && ret != -1) { 534 free(buf, M_EFSTMP); 535 return (ret); 536 } 537 538 len = off + 1; 539 } 540 541 KASSERT(len >= 1 && len <= (eip->ei_size + 1)); 542 buf[len - 1] = '\0'; 543 err = uiomove(buf, len, uio); 544 free(buf, M_EFSTMP); 545 546 return (err); 547 } 548 549 /* 550 * Release an inactive vnode. The vnode _must_ be unlocked on return. 551 * It is either nolonger being used by the kernel, or an unmount is being 552 * forced. 553 * 554 * Returns 0 on success. 555 */ 556 static int 557 efs_inactive(void *v) 558 { 559 struct vop_inactive_args /* { 560 const struct vnodeop_desc *a_desc; 561 struct vnode *a_vp; 562 bool *a_recycle 563 } */ *ap = v; 564 struct efs_inode *eip = EFS_VTOI(ap->a_vp); 565 566 *ap->a_recycle = (eip->ei_mode == 0); 567 VOP_UNLOCK(ap->a_vp, 0); 568 569 return (0); 570 } 571 572 static int 573 efs_reclaim(void *v) 574 { 575 struct vop_reclaim_args /* { 576 const struct vnodeop_desc *a_desc; 577 struct vnode *a_vp; 578 } */ *ap = v; 579 struct vnode *vp = ap->a_vp; 580 581 efs_ihashrem(EFS_VTOI(vp)); 582 cache_purge(vp); 583 genfs_node_destroy(vp); 584 pool_put(&efs_inode_pool, vp->v_data); 585 vp->v_data = NULL; 586 587 return (0); 588 } 589 590 static int 591 efs_bmap(void *v) 592 { 593 struct vop_bmap_args /* { 594 const struct vnodeop_desc *a_desc; 595 struct vnode *a_vp; 596 daddr_t a_bn; 597 struct vnode **a_vpp; 598 daddr_t *a_bnp; 599 int *a_runp; 600 } */ *ap = v; 601 struct efs_extent ex; 602 struct efs_extent_iterator exi; 603 struct vnode *vp = ap->a_vp; 604 struct efs_inode *eip = EFS_VTOI(vp); 605 bool found; 606 int ret; 607 608 if (ap->a_vpp != NULL) 609 *ap->a_vpp = VFSTOEFS(vp->v_mount)->em_devvp; 610 611 found = false; 612 efs_extent_iterator_init(&exi, eip, ap->a_bn * EFS_BB_SIZE); 613 while ((ret = efs_extent_iterator_next(&exi, &ex)) == 0) { 614 if (ap->a_bn >= ex.ex_offset && 615 ap->a_bn < (ex.ex_offset + ex.ex_length)) { 616 found = true; 617 break; 618 } 619 } 620 621 KASSERT(!found || (found && ret == 0)); 622 623 if (!found) { 624 EFS_DPRINTF(("efs_bmap: ap->a_bn not in extents\n")); 625 return ((ret == -1) ? EIO : ret); 626 } 627 628 if (ex.ex_magic != EFS_EXTENT_MAGIC) { 629 EFS_DPRINTF(("efs_bmap: exn.ex_magic != EFS_EXTENT_MAGIC\n")); 630 return (EIO); 631 } 632 633 if (ap->a_bn < ex.ex_offset) { 634 EFS_DPRINTF(("efs_bmap: ap->a_bn < exn.ex_offset\n")); 635 return (EIO); 636 } 637 638 KASSERT(ap->a_bn >= ex.ex_offset); 639 KASSERT(ex.ex_length > ap->a_bn - ex.ex_offset); 640 641 *ap->a_bnp = ex.ex_bn + (ap->a_bn - ex.ex_offset); 642 if (ap->a_runp != NULL) 643 *ap->a_runp = ex.ex_length - (ap->a_bn - ex.ex_offset) - 1; 644 645 return (0); 646 } 647 648 static int 649 efs_strategy(void *v) 650 { 651 struct vop_strategy_args /* { 652 const struct vnodeop_desc *a_desc; 653 struct vnode *a_vp; 654 struct buf *a_bp; 655 } */ *ap = v; 656 struct vnode *vp = ap->a_vp; 657 struct buf *bp = ap->a_bp; 658 int error; 659 660 if (vp == NULL) { 661 bp->b_error = EIO; 662 biodone(bp); 663 return (EIO); 664 } 665 666 if (bp->b_blkno == bp->b_lblkno) { 667 error = VOP_BMAP(vp, bp->b_lblkno, NULL, &bp->b_blkno, NULL); 668 if (error) { 669 bp->b_error = error; 670 biodone(bp); 671 return (error); 672 } 673 if ((long)bp->b_blkno == -1) 674 clrbuf(bp); 675 } 676 677 if ((long)bp->b_blkno == -1) { 678 biodone(bp); 679 return (0); 680 } 681 682 return (VOP_STRATEGY(VFSTOEFS(vp->v_mount)->em_devvp, bp)); 683 } 684 685 static int 686 efs_print(void *v) 687 { 688 struct vop_print_args /* { 689 const struct vnodeop_desc *a_desc; 690 struct vnode *a_vp; 691 } */ *ap = v; 692 struct efs_inode *eip = EFS_VTOI(ap->a_vp); 693 694 printf( "efs_inode (ino %lu):\n" 695 " ei_mode: %07o\n" 696 " ei_nlink: %d\n" 697 " ei_uid: %d\n" 698 " ei_gid: %d\n" 699 " ei_size: %d\n" 700 " ei_atime: %d\n" 701 " ei_mtime: %d\n" 702 " ei_ctime: %d\n" 703 " ei_gen: %d\n" 704 " ei_numextents: %d\n" 705 " ei_version: %d\n", 706 (unsigned long)eip->ei_number, 707 (unsigned int)eip->ei_mode, 708 eip->ei_nlink, 709 eip->ei_uid, 710 eip->ei_gid, 711 eip->ei_size, 712 (int32_t)eip->ei_atime, 713 (int32_t)eip->ei_mtime, 714 (int32_t)eip->ei_ctime, 715 eip->ei_gen, 716 eip->ei_numextents, 717 eip->ei_version); 718 719 return (0); 720 } 721 722 static int 723 efs_pathconf(void *v) 724 { 725 struct vop_pathconf_args /* { 726 const struct vnodeop_desc *a_desc; 727 struct vnode *a_vp; 728 int a_name; 729 register_t *a_retval; 730 } */ *ap = v; 731 732 /* IRIX 4 values */ 733 switch (ap->a_name) { 734 case _PC_LINK_MAX: 735 *ap->a_retval = 30000; 736 break; 737 case _PC_NAME_MAX: 738 *ap->a_retval = 255; 739 break; 740 case _PC_PATH_MAX: 741 *ap->a_retval = 1024; 742 break; 743 case _PC_NO_TRUNC: 744 *ap->a_retval = 1; 745 break; 746 case _PC_CHOWN_RESTRICTED: 747 *ap->a_retval = 1; 748 break; 749 case _PC_SYNC_IO: 750 *ap->a_retval = 1; 751 break; 752 case _PC_FILESIZEBITS: 753 *ap->a_retval = 32; 754 break; 755 default: 756 return (EINVAL); 757 } 758 759 return (0); 760 } 761 762 static int 763 efs_advlock(void *v) 764 { 765 struct vop_advlock_args /* { 766 const struct vnodeop_desc *a_desc; 767 struct vnode *a_vp; 768 void *a_id; 769 int a_op; 770 struct flock *a_fl; 771 int a_flags; 772 } */ *ap = v; 773 struct efs_inode *eip = EFS_VTOI(ap->a_vp); 774 775 return (lf_advlock(ap, &eip->ei_lockf, eip->ei_size)); 776 } 777 778 /* Global vfs data structures for efs */ 779 int (**efs_vnodeop_p)(void *); 780 const struct vnodeopv_entry_desc efs_vnodeop_entries[] = { 781 { &vop_default_desc, vn_default_error}, /* error handler */ 782 { &vop_lookup_desc, efs_lookup }, /* lookup */ 783 { &vop_create_desc, genfs_eopnotsupp}, /* create */ 784 { &vop_mknod_desc, genfs_eopnotsupp}, /* mknod */ 785 { &vop_open_desc, genfs_nullop }, /* open */ 786 { &vop_close_desc, genfs_nullop }, /* close */ 787 { &vop_access_desc, efs_access }, /* access */ 788 { &vop_getattr_desc, efs_getattr }, /* getattr */ 789 { &vop_setattr_desc, genfs_eopnotsupp}, /* setattr */ 790 { &vop_read_desc, efs_read }, /* read */ 791 { &vop_write_desc, genfs_eopnotsupp}, /* write */ 792 { &vop_ioctl_desc, genfs_enoioctl }, /* ioctl */ 793 { &vop_fcntl_desc, genfs_fcntl }, /* fcntl */ 794 { &vop_poll_desc, genfs_poll }, /* poll */ 795 { &vop_kqfilter_desc, genfs_kqfilter }, /* kqfilter */ 796 { &vop_revoke_desc, genfs_revoke }, /* revoke */ 797 { &vop_mmap_desc, genfs_mmap }, /* mmap */ 798 { &vop_fsync_desc, genfs_eopnotsupp}, /* fsync */ 799 { &vop_seek_desc, genfs_seek }, /* seek */ 800 { &vop_remove_desc, genfs_eopnotsupp}, /* remove */ 801 { &vop_link_desc, genfs_eopnotsupp}, /* link */ 802 { &vop_rename_desc, genfs_eopnotsupp}, /* rename */ 803 { &vop_mkdir_desc, genfs_eopnotsupp}, /* mkdir */ 804 { &vop_rmdir_desc, genfs_eopnotsupp}, /* rmdir */ 805 { &vop_symlink_desc, genfs_eopnotsupp}, /* symlink */ 806 { &vop_readdir_desc, efs_readdir }, /* readdir */ 807 { &vop_readlink_desc, efs_readlink }, /* readlink */ 808 { &vop_abortop_desc, genfs_abortop }, /* abortop */ 809 { &vop_inactive_desc, efs_inactive }, /* inactive */ 810 { &vop_reclaim_desc, efs_reclaim }, /* reclaim */ 811 { &vop_lock_desc, genfs_lock, }, /* lock */ 812 { &vop_unlock_desc, genfs_unlock, }, /* unlock */ 813 { &vop_islocked_desc, genfs_islocked, }, /* islocked */ 814 { &vop_bmap_desc, efs_bmap }, /* bmap */ 815 { &vop_print_desc, efs_print }, /* print */ 816 { &vop_pathconf_desc, efs_pathconf }, /* pathconf */ 817 { &vop_advlock_desc, efs_advlock }, /* advlock */ 818 /* blkatoff */ 819 /* valloc */ 820 /* balloc */ 821 /* vfree */ 822 /* truncate */ 823 /* whiteout */ 824 { &vop_getpages_desc, genfs_getpages }, /* getpages */ 825 { &vop_putpages_desc, genfs_putpages }, /* putpages */ 826 { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ 827 { &vop_strategy_desc, efs_strategy }, /* strategy */ 828 { NULL, NULL } 829 }; 830 const struct vnodeopv_desc efs_vnodeop_opv_desc = { 831 &efs_vnodeop_p, 832 efs_vnodeop_entries 833 }; 834
Indexes created Sat Oct 18 08:10:09 GMT 2025