efs_vnops.c revision 1.3.2.7
1 /* $NetBSD: efs_vnops.c,v 1.3.2.7 2007/10/09 15:22:14 ad 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 1.3.2.7 2007/10/09 15:22:14 ad 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, cnp->cn_lwp); 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, cnp->cn_lwp); 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 struct lwp *a_l; 143 } */ *ap = v; 144 struct vnode *vp = ap->a_vp; 145 struct efs_inode *eip = EFS_VTOI(vp); 146 147 if ((ap->a_mode & VWRITE) && (vp->v_mount->mnt_flag & MNT_RDONLY)) 148 return (EROFS); 149 150 return (vaccess(vp->v_type, eip->ei_mode, eip->ei_uid, eip->ei_gid, 151 ap->a_mode, ap->a_cred)); 152 } 153 154 /* 155 * Get specific vnode attributes on a file. See vattr(9). 156 * 157 * Returns 0 on success. 158 */ 159 static int 160 efs_getattr(void *v) 161 { 162 struct vop_getattr_args /* { 163 const struct vnodeop_desc *a_desc; 164 struct vnode *a_vp; 165 struct vattr *a_vap; 166 struct ucred *a_cred; 167 struct lwp *a_l; 168 } */ *ap = v; 169 170 struct vattr *vap = ap->a_vap; 171 struct efs_inode *eip = EFS_VTOI(ap->a_vp); 172 173 vattr_null(ap->a_vap); 174 vap->va_type = ap->a_vp->v_type; 175 vap->va_mode = eip->ei_mode; 176 vap->va_nlink = eip->ei_nlink; 177 vap->va_uid = eip->ei_uid; 178 vap->va_gid = eip->ei_gid; 179 vap->va_fsid = ap->a_vp->v_mount->mnt_stat.f_fsid; 180 vap->va_fileid = eip->ei_number; 181 vap->va_size = eip->ei_size; 182 183 if (ap->a_vp->v_type == VBLK) 184 vap->va_blocksize = BLKDEV_IOSIZE; 185 else if (ap->a_vp->v_type == VCHR) 186 vap->va_blocksize = MAXBSIZE; 187 else 188 vap->va_blocksize = EFS_BB_SIZE; 189 190 vap->va_atime.tv_sec = eip->ei_atime; 191 vap->va_mtime.tv_sec = eip->ei_mtime; 192 vap->va_ctime.tv_sec = eip->ei_ctime; 193 /* vap->va_birthtime = */ 194 vap->va_gen = eip->ei_gen; 195 vap->va_flags = ap->a_vp->v_vflag | 196 ap->a_vp->v_iflag | ap->a_vp->v_uflag; 197 198 if (ap->a_vp->v_type == VBLK || ap->a_vp->v_type == VCHR) { 199 uint32_t dmaj, dmin; 200 201 if (be16toh(eip->ei_di.di_odev) != EFS_DINODE_ODEV_INVALID) { 202 dmaj = EFS_DINODE_ODEV_MAJ(be16toh(eip->ei_di.di_odev)); 203 dmin = EFS_DINODE_ODEV_MIN(be16toh(eip->ei_di.di_odev)); 204 } else { 205 dmaj = EFS_DINODE_NDEV_MAJ(be32toh(eip->ei_di.di_ndev)); 206 dmin = EFS_DINODE_NDEV_MIN(be32toh(eip->ei_di.di_ndev)); 207 } 208 209 vap->va_rdev = makedev(dmaj, dmin); 210 } 211 212 vap->va_bytes = eip->ei_size; 213 /* vap->va_filerev = */ 214 /* vap->va_vaflags = */ 215 216 return (0); 217 } 218 219 /* 220 * Read a file. 221 * 222 * Returns 0 on success. 223 */ 224 static int 225 efs_read(void *v) 226 { 227 struct vop_read_args /* { 228 const struct vnodeop_desc *a_desc; 229 struct vnode *a_vp; 230 struct uio *a_uio; 231 int a_ioflag; 232 struct ucred *a_cred; 233 } */ *ap = v; 234 struct efs_extent ex; 235 struct efs_extent_iterator exi; 236 void *win; 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, flags; 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 win = ubc_alloc(&ap->a_vp->v_uobj, uio->uio_offset, 272 &len, advice, UBC_READ); 273 274 flags = UBC_WANT_UNMAP(ap->a_vp) ? UBC_UNMAP : 0; 275 276 err = uiomove(win, len, uio); 277 ubc_release(win, flags); 278 if (err) { 279 EFS_DPRINTF(("efs_read: uiomove error %d\n", 280 err)); 281 return (err); 282 } 283 } 284 285 return ((ret == -1) ? 0 : ret); 286 } 287 288 static int 289 efs_readdir(void *v) 290 { 291 struct vop_readdir_args /* { 292 const struct vnodeop_desc *a_desc; 293 struct vnode *a_vp; 294 struct uio *a_uio; 295 struct ucred *a_cred; 296 int *a_eofflag; 297 off_t **a_cookies; 298 int *a_ncookies; 299 } */ *ap = v; 300 struct dirent *dp; 301 struct efs_dinode edi; 302 struct efs_extent ex; 303 struct efs_extent_iterator exi; 304 struct buf *bp; 305 struct efs_dirent *de; 306 struct efs_dirblk *db; 307 struct uio *uio = ap->a_uio; 308 struct efs_inode *ei = EFS_VTOI(ap->a_vp); 309 off_t *cookies = NULL; 310 off_t offset; 311 int i, j, err, ret, s, slot, ncookies, maxcookies = 0; 312 313 if (ap->a_vp->v_type != VDIR) 314 return (ENOTDIR); 315 316 if (ap->a_eofflag != NULL) 317 *ap->a_eofflag = false; 318 319 if (ap->a_ncookies != NULL) { 320 ncookies = 0; 321 maxcookies = 322 uio->uio_resid / _DIRENT_MINSIZE((struct dirent *)0); 323 cookies = malloc(maxcookies * sizeof(off_t), M_TEMP, M_WAITOK); 324 } 325 326 dp = malloc(sizeof(struct dirent), M_EFSTMP, M_WAITOK | M_ZERO); 327 328 offset = 0; 329 efs_extent_iterator_init(&exi, ei, 0); 330 while ((ret = efs_extent_iterator_next(&exi, &ex)) == 0) { 331 for (i = 0; i < ex.ex_length; i++) { 332 err = efs_bread(VFSTOEFS(ap->a_vp->v_mount), 333 ex.ex_bn + i, NULL, &bp); 334 if (err) { 335 brelse(bp, 0); 336 goto exit_err; 337 } 338 339 db = (struct efs_dirblk *)bp->b_data; 340 341 if (be16toh(db->db_magic) != EFS_DIRBLK_MAGIC) { 342 printf("efs_readdir: bad dirblk\n"); 343 brelse(bp, 0); 344 continue; 345 } 346 347 for (j = 0; j < db->db_slots; j++) { 348 slot = EFS_DIRENT_OFF_EXPND(db->db_space[j]); 349 if (slot == EFS_DIRBLK_SLOT_FREE) 350 continue; 351 352 if (!EFS_DIRENT_OFF_VALID(slot)) { 353 printf("efs_readdir: bad dirent\n"); 354 continue; 355 } 356 357 de = EFS_DIRBLK_TO_DIRENT(db, slot); 358 s = _DIRENT_RECLEN(dp, de->de_namelen); 359 360 if (offset < uio->uio_offset) { 361 offset += s; 362 continue; 363 } 364 365 /* XXX - shouldn't happen, right? */ 366 if (offset > uio->uio_offset || 367 s > uio->uio_resid) { 368 brelse(bp, 0); 369 goto exit_ok; 370 } 371 372 /* de_namelen is uint8_t, d.d_name is 512b */ 373 KASSERT(sizeof(dp->d_name)-de->de_namelen > 0); 374 dp->d_fileno = be32toh(de->de_inumber); 375 dp->d_reclen = s; 376 dp->d_namlen = de->de_namelen; 377 memcpy(dp->d_name, de->de_name, 378 de->de_namelen); 379 dp->d_name[de->de_namelen] = '\0'; 380 381 /* look up inode to get type */ 382 err = efs_read_inode( 383 VFSTOEFS(ap->a_vp->v_mount), 384 dp->d_fileno, NULL, &edi); 385 if (err) { 386 brelse(bp, 0); 387 goto exit_err; 388 } 389 390 switch (be16toh(edi.di_mode) & EFS_IFMT) { 391 case EFS_IFIFO: 392 dp->d_type = DT_FIFO; 393 break; 394 case EFS_IFCHR: 395 dp->d_type = DT_CHR; 396 break; 397 case EFS_IFDIR: 398 dp->d_type = DT_DIR; 399 break; 400 case EFS_IFBLK: 401 dp->d_type = DT_BLK; 402 break; 403 case EFS_IFREG: 404 dp->d_type = DT_REG; 405 break; 406 case EFS_IFLNK: 407 dp->d_type = DT_LNK; 408 break; 409 case EFS_IFSOCK: 410 dp->d_type = DT_SOCK; 411 break; 412 default: 413 dp->d_type = DT_UNKNOWN; 414 break; 415 } 416 417 err = uiomove(dp, s, uio); 418 if (err) { 419 brelse(bp, 0); 420 goto exit_err; 421 } 422 423 offset += s; 424 425 if (cookies != NULL && maxcookies != 0) { 426 cookies[ncookies++] = offset; 427 if (ncookies == maxcookies) { 428 brelse(bp, 0); 429 goto exit_ok; 430 } 431 } 432 } 433 434 brelse(bp, 0); 435 } 436 } 437 438 if (ret != -1) { 439 err = ret; 440 goto exit_err; 441 } 442 443 if (ap->a_eofflag != NULL) 444 *ap->a_eofflag = true; 445 446 exit_ok: 447 if (cookies != NULL) { 448 *ap->a_cookies = cookies; 449 *ap->a_ncookies = ncookies; 450 } 451 452 uio->uio_offset = offset; 453 454 free(dp, M_EFSTMP); 455 456 return (0); 457 458 exit_err: 459 if (cookies != NULL) 460 free(cookies, M_TEMP); 461 462 free(dp, M_EFSTMP); 463 464 return (err); 465 } 466 467 static int 468 efs_readlink(void *v) 469 { 470 struct vop_readlink_args /* { 471 const struct vnodeop_desc *a_desc; 472 struct vnode *a_vp; 473 struct uio *a_uio; 474 struct ucred *a_cred; 475 } */ *ap = v; 476 struct uio *uio = ap->a_uio; 477 struct efs_inode *eip = EFS_VTOI(ap->a_vp); 478 char *buf; 479 size_t len; 480 int err, i; 481 482 if ((eip->ei_mode & EFS_IFMT) != EFS_IFLNK) 483 return (EINVAL); 484 485 if (uio->uio_resid < 1) 486 return (EINVAL); 487 488 buf = malloc(eip->ei_size + 1, M_EFSTMP, M_ZERO | M_WAITOK); 489 490 /* symlinks are either inlined in the inode, or in extents */ 491 if (eip->ei_numextents == 0) { 492 if (eip->ei_size > sizeof(eip->ei_di.di_symlink)) { 493 EFS_DPRINTF(("efs_readlink: too big for inline\n")); 494 free(buf, M_EFSTMP); 495 return (EBADF); 496 } 497 498 memcpy(buf, eip->ei_di.di_symlink, eip->ei_size); 499 len = MIN(uio->uio_resid, eip->ei_size + 1); 500 } else { 501 struct efs_extent_iterator exi; 502 struct efs_extent ex; 503 struct buf *bp; 504 int resid, off, ret; 505 506 off = 0; 507 resid = eip->ei_size; 508 509 efs_extent_iterator_init(&exi, eip, 0); 510 while ((ret = efs_extent_iterator_next(&exi, &ex)) == 0) { 511 for (i = 0; i < ex.ex_length; i++) { 512 err = efs_bread(VFSTOEFS(ap->a_vp->v_mount), 513 ex.ex_bn + i, NULL, &bp); 514 if (err) { 515 brelse(bp, 0); 516 free(buf, M_EFSTMP); 517 return (err); 518 } 519 520 len = MIN(resid, bp->b_bcount); 521 memcpy(buf + off, bp->b_data, len); 522 brelse(bp, 0); 523 524 off += len; 525 resid -= len; 526 527 if (resid == 0) 528 break; 529 } 530 531 if (resid == 0) 532 break; 533 } 534 535 if (ret != 0 && ret != -1) { 536 free(buf, M_EFSTMP); 537 return (ret); 538 } 539 540 len = off + 1; 541 } 542 543 KASSERT(len >= 1 && len <= (eip->ei_size + 1)); 544 buf[len - 1] = '\0'; 545 err = uiomove(buf, len, uio); 546 free(buf, M_EFSTMP); 547 548 return (err); 549 } 550 551 /* 552 * Release an inactive vnode. The vnode _must_ be unlocked on return. 553 * It is either nolonger being used by the kernel, or an unmount is being 554 * forced. 555 * 556 * Returns 0 on success. 557 */ 558 static int 559 efs_inactive(void *v) 560 { 561 struct vop_inactive_args /* { 562 const struct vnodeop_desc *a_desc; 563 struct vnode *a_vp; 564 bool *recycle; 565 } */ *ap = v; 566 struct efs_inode *eip = EFS_VTOI(ap->a_vp); 567 568 VOP_UNLOCK(ap->a_vp, 0); 569 *ap->a_recycle = (eip->ei_mode == 0); 570 571 return (0); 572 } 573 574 static int 575 efs_reclaim(void *v) 576 { 577 struct vop_reclaim_args /* { 578 const struct vnodeop_desc *a_desc; 579 struct vnode *a_vp; 580 struct lwp *a_l; 581 } */ *ap = v; 582 struct vnode *vp = ap->a_vp; 583 584 efs_ihashrem(EFS_VTOI(vp)); 585 cache_purge(vp); 586 genfs_node_destroy(vp); 587 pool_put(&efs_inode_pool, vp->v_data); 588 vp->v_data = NULL; 589 590 return (0); 591 } 592 593 static int 594 efs_bmap(void *v) 595 { 596 struct vop_bmap_args /* { 597 const struct vnodeop_desc *a_desc; 598 struct vnode *a_vp; 599 daddr_t a_bn; 600 struct vnode **a_vpp; 601 daddr_t *a_bnp; 602 int *a_runp; 603 } */ *ap = v; 604 struct efs_extent ex; 605 struct efs_extent_iterator exi; 606 struct vnode *vp = ap->a_vp; 607 struct efs_inode *eip = EFS_VTOI(vp); 608 bool found; 609 int ret; 610 611 if (ap->a_vpp != NULL) 612 *ap->a_vpp = VFSTOEFS(vp->v_mount)->em_devvp; 613 614 found = false; 615 efs_extent_iterator_init(&exi, eip, ap->a_bn * EFS_BB_SIZE); 616 while ((ret = efs_extent_iterator_next(&exi, &ex)) == 0) { 617 if (ap->a_bn >= ex.ex_offset && 618 ap->a_bn < (ex.ex_offset + ex.ex_length)) { 619 found = true; 620 break; 621 } 622 } 623 624 KASSERT(!found || (found && ret == 0)); 625 626 if (!found) { 627 EFS_DPRINTF(("efs_bmap: ap->a_bn not in extents\n")); 628 return ((ret == -1) ? EIO : ret); 629 } 630 631 if (ex.ex_magic != EFS_EXTENT_MAGIC) { 632 EFS_DPRINTF(("efs_bmap: exn.ex_magic != EFS_EXTENT_MAGIC\n")); 633 return (EIO); 634 } 635 636 if (ap->a_bn < ex.ex_offset) { 637 EFS_DPRINTF(("efs_bmap: ap->a_bn < exn.ex_offset\n")); 638 return (EIO); 639 } 640 641 KASSERT(ap->a_bn >= ex.ex_offset); 642 KASSERT(ex.ex_length > ap->a_bn - ex.ex_offset); 643 644 *ap->a_bnp = ex.ex_bn + (ap->a_bn - ex.ex_offset); 645 if (ap->a_runp != NULL) 646 *ap->a_runp = ex.ex_length - (ap->a_bn - ex.ex_offset) - 1; 647 648 return (0); 649 } 650 651 static int 652 efs_strategy(void *v) 653 { 654 struct vop_strategy_args /* { 655 const struct vnodeop_desc *a_desc; 656 struct vnode *a_vp; 657 struct buf *a_bp; 658 } */ *ap = v; 659 struct vnode *vp = ap->a_vp; 660 struct buf *bp = ap->a_bp; 661 int error; 662 663 if (vp == NULL) { 664 bp->b_error = EIO; 665 biodone(bp); 666 return (EIO); 667 } 668 669 if (bp->b_blkno == bp->b_lblkno) { 670 error = VOP_BMAP(vp, bp->b_lblkno, NULL, &bp->b_blkno, NULL); 671 if (error) { 672 bp->b_error = error; 673 biodone(bp); 674 return (error); 675 } 676 if ((long)bp->b_blkno == -1) 677 clrbuf(bp); 678 } 679 680 if ((long)bp->b_blkno == -1) { 681 biodone(bp); 682 return (0); 683 } 684 685 return (VOP_STRATEGY(VFSTOEFS(vp->v_mount)->em_devvp, bp)); 686 } 687 688 static int 689 efs_print(void *v) 690 { 691 struct vop_print_args /* { 692 const struct vnodeop_desc *a_desc; 693 struct vnode *a_vp; 694 } */ *ap = v; 695 struct efs_inode *eip = EFS_VTOI(ap->a_vp); 696 697 printf( "efs_inode (ino %lu):\n" 698 " ei_mode: %07o\n" 699 " ei_nlink: %d\n" 700 " ei_uid: %d\n" 701 " ei_gid: %d\n" 702 " ei_size: %d\n" 703 " ei_atime: %d\n" 704 " ei_mtime: %d\n" 705 " ei_ctime: %d\n" 706 " ei_gen: %d\n" 707 " ei_numextents: %d\n" 708 " ei_version: %d\n", 709 (unsigned long)eip->ei_number, 710 (unsigned int)eip->ei_mode, 711 eip->ei_nlink, 712 eip->ei_uid, 713 eip->ei_gid, 714 eip->ei_size, 715 (int32_t)eip->ei_atime, 716 (int32_t)eip->ei_mtime, 717 (int32_t)eip->ei_ctime, 718 eip->ei_gen, 719 eip->ei_numextents, 720 eip->ei_version); 721 722 return (0); 723 } 724 725 static int 726 efs_pathconf(void *v) 727 { 728 struct vop_pathconf_args /* { 729 const struct vnodeop_desc *a_desc; 730 struct vnode *a_vp; 731 int a_name; 732 register_t *a_retval; 733 } */ *ap = v; 734 735 /* IRIX 4 values */ 736 switch (ap->a_name) { 737 case _PC_LINK_MAX: 738 *ap->a_retval = 30000; 739 break; 740 case _PC_NAME_MAX: 741 *ap->a_retval = 255; 742 break; 743 case _PC_PATH_MAX: 744 *ap->a_retval = 1024; 745 break; 746 case _PC_NO_TRUNC: 747 *ap->a_retval = 1; 748 break; 749 case _PC_CHOWN_RESTRICTED: 750 *ap->a_retval = 1; 751 break; 752 case _PC_SYNC_IO: 753 *ap->a_retval = 1; 754 break; 755 case _PC_FILESIZEBITS: 756 *ap->a_retval = 32; 757 break; 758 default: 759 return (EINVAL); 760 } 761 762 return (0); 763 } 764 765 static int 766 efs_advlock(void *v) 767 { 768 struct vop_advlock_args /* { 769 const struct vnodeop_desc *a_desc; 770 struct vnode *a_vp; 771 void *a_id; 772 int a_op; 773 struct flock *a_fl; 774 int a_flags; 775 } */ *ap = v; 776 struct efs_inode *eip = EFS_VTOI(ap->a_vp); 777 778 return (lf_advlock(ap, &eip->ei_lockf, eip->ei_size)); 779 } 780 781 /* Global vfs data structures for efs */ 782 int (**efs_vnodeop_p)(void *); 783 const struct vnodeopv_entry_desc efs_vnodeop_entries[] = { 784 { &vop_default_desc, vn_default_error}, /* error handler */ 785 { &vop_lookup_desc, efs_lookup }, /* lookup */ 786 { &vop_create_desc, genfs_eopnotsupp}, /* create */ 787 { &vop_mknod_desc, genfs_eopnotsupp}, /* mknod */ 788 { &vop_open_desc, genfs_nullop }, /* open */ 789 { &vop_close_desc, genfs_nullop }, /* close */ 790 { &vop_access_desc, efs_access }, /* access */ 791 { &vop_getattr_desc, efs_getattr }, /* getattr */ 792 { &vop_setattr_desc, genfs_eopnotsupp}, /* setattr */ 793 { &vop_read_desc, efs_read }, /* read */ 794 { &vop_write_desc, genfs_eopnotsupp}, /* write */ 795 { &vop_ioctl_desc, genfs_enoioctl }, /* ioctl */ 796 { &vop_fcntl_desc, genfs_fcntl }, /* fcntl */ 797 { &vop_poll_desc, genfs_poll }, /* poll */ 798 { &vop_kqfilter_desc, genfs_kqfilter }, /* kqfilter */ 799 { &vop_revoke_desc, genfs_revoke }, /* revoke */ 800 { &vop_mmap_desc, genfs_mmap }, /* mmap */ 801 { &vop_fsync_desc, genfs_eopnotsupp}, /* fsync */ 802 { &vop_seek_desc, genfs_seek }, /* seek */ 803 { &vop_remove_desc, genfs_eopnotsupp}, /* remove */ 804 { &vop_link_desc, genfs_eopnotsupp}, /* link */ 805 { &vop_rename_desc, genfs_eopnotsupp}, /* rename */ 806 { &vop_mkdir_desc, genfs_eopnotsupp}, /* mkdir */ 807 { &vop_rmdir_desc, genfs_eopnotsupp}, /* rmdir */ 808 { &vop_symlink_desc, genfs_eopnotsupp}, /* symlink */ 809 { &vop_readdir_desc, efs_readdir }, /* readdir */ 810 { &vop_readlink_desc, efs_readlink }, /* readlink */ 811 { &vop_abortop_desc, genfs_abortop }, /* abortop */ 812 { &vop_inactive_desc, efs_inactive }, /* inactive */ 813 { &vop_reclaim_desc, efs_reclaim }, /* reclaim */ 814 { &vop_lock_desc, genfs_lock, }, /* lock */ 815 { &vop_unlock_desc, genfs_unlock, }, /* unlock */ 816 { &vop_islocked_desc, genfs_islocked, }, /* islocked */ 817 { &vop_bmap_desc, efs_bmap }, /* bmap */ 818 { &vop_print_desc, efs_print }, /* print */ 819 { &vop_pathconf_desc, efs_pathconf }, /* pathconf */ 820 { &vop_advlock_desc, efs_advlock }, /* advlock */ 821 /* blkatoff */ 822 /* valloc */ 823 /* balloc */ 824 /* vfree */ 825 /* truncate */ 826 { &vop_lease_desc, genfs_lease_check }, /* lease */ 827 /* whiteout */ 828 { &vop_getpages_desc, genfs_getpages }, /* getpages */ 829 { &vop_putpages_desc, genfs_putpages }, /* putpages */ 830 { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ 831 { &vop_strategy_desc, efs_strategy }, /* strategy */ 832 { NULL, NULL } 833 }; 834 const struct vnodeopv_desc efs_vnodeop_opv_desc = { 835 &efs_vnodeop_p, 836 efs_vnodeop_entries 837 }; 838
Indexes created Sun Oct 19 02:09:48 GMT 2025