1 /* $NetBSD: nfs.c,v 1.2 1998/01/24 12:43:09 drochner Exp $ */ 2 3 /*- 4 * Copyright (c) 1993 John Brezak 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR `AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 20 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 21 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 22 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 23 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 26 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 27 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28 * POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #include <sys/cdefs.h> 32 33 #include <sys/param.h> 34 #include <sys/time.h> 35 #include <sys/socket.h> 36 #include <sys/stat.h> 37 #include <string.h> 38 #include <stddef.h> 39 40 #include <netinet/in.h> 41 #include <netinet/in_systm.h> 42 43 #include "rpcv2.h" 44 #include "nfsv2.h" 45 46 #include "stand.h" 47 #include "net.h" 48 #include "netif.h" 49 #include "rpc.h" 50 51 #define NFS_DEBUGxx 52 53 #define NFSREAD_MIN_SIZE 1024 54 #define NFSREAD_MAX_SIZE 16384 55 56 /* NFSv3 definitions */ 57 #define NFS_V3MAXFHSIZE 64 58 #define NFS_VER3 3 59 #define RPCMNT_VER3 3 60 #define NFSPROCV3_LOOKUP 3 61 #define NFSPROCV3_READLINK 5 62 #define NFSPROCV3_READ 6 63 #define NFSPROCV3_READDIR 16 64 65 typedef struct { 66 uint32_t val[2]; 67 } n_quad; 68 69 struct nfsv3_time { 70 uint32_t nfs_sec; 71 uint32_t nfs_nsec; 72 }; 73 74 struct nfsv3_fattrs { 75 uint32_t fa_type; 76 uint32_t fa_mode; 77 uint32_t fa_nlink; 78 uint32_t fa_uid; 79 uint32_t fa_gid; 80 n_quad fa_size; 81 n_quad fa_used; 82 n_quad fa_rdev; 83 n_quad fa_fsid; 84 n_quad fa_fileid; 85 struct nfsv3_time fa_atime; 86 struct nfsv3_time fa_mtime; 87 struct nfsv3_time fa_ctime; 88 }; 89 90 /* 91 * For NFSv3, the file handle is variable in size, so most fixed sized 92 * structures for arguments won't work. For most cases, a structure 93 * that starts with any fixed size section is followed by an array 94 * that covers the maximum size required. 95 */ 96 struct nfsv3_readdir_repl { 97 uint32_t errno; 98 uint32_t ok; 99 struct nfsv3_fattrs fa; 100 uint32_t cookiev0; 101 uint32_t cookiev1; 102 }; 103 104 struct nfsv3_readdir_entry { 105 uint32_t follows; 106 uint32_t fid0; 107 uint32_t fid1; 108 uint32_t len; 109 uint32_t nameplus[0]; 110 }; 111 112 struct nfs_iodesc { 113 struct iodesc *iodesc; 114 off_t off; 115 uint32_t fhsize; 116 u_char fh[NFS_V3MAXFHSIZE]; 117 struct nfsv3_fattrs fa; /* all in network order */ 118 uint64_t cookie; 119 }; 120 121 /* 122 * XXX interactions with tftp? See nfswrapper.c for a confusing 123 * issue. 124 */ 125 int nfs_open(const char *path, struct open_file *f); 126 static int nfs_close(struct open_file *f); 127 static int nfs_read(struct open_file *f, void *buf, size_t size, size_t *resid); 128 static int nfs_write(struct open_file *f, void *buf, size_t size, size_t *resid); 129 static off_t nfs_seek(struct open_file *f, off_t offset, int where); 130 static int nfs_stat(struct open_file *f, struct stat *sb); 131 static int nfs_readdir(struct open_file *f, struct dirent *d); 132 133 struct nfs_iodesc nfs_root_node; 134 135 struct fs_ops nfs_fsops = { 136 "nfs", 137 nfs_open, 138 nfs_close, 139 nfs_read, 140 nfs_write, 141 nfs_seek, 142 nfs_stat, 143 nfs_readdir 144 }; 145 146 static int nfs_read_size = NFSREAD_MIN_SIZE; 147 148 /* 149 * Improve boot performance over NFS 150 */ 151 static void 152 set_nfs_read_size(void) 153 { 154 char *env, *end; 155 char buf[10]; 156 157 if ((env = getenv("nfs.read_size")) != NULL) { 158 errno = 0; 159 nfs_read_size = strtol(env, &end, 0); 160 if (errno != 0 || *env == '\0' || *end != '\0') { 161 printf("%s: bad value: \"%s\", defaulting to %d\n", 162 "nfs.read_size", env, NFSREAD_MIN_SIZE); 163 nfs_read_size = NFSREAD_MIN_SIZE; 164 } 165 } 166 if (nfs_read_size < NFSREAD_MIN_SIZE) { 167 printf("%s: bad value: \"%d\", defaulting to %d\n", 168 "nfs.read_size", nfs_read_size, NFSREAD_MIN_SIZE); 169 nfs_read_size = NFSREAD_MIN_SIZE; 170 } 171 if (nfs_read_size > NFSREAD_MAX_SIZE) { 172 printf("%s: bad value: \"%d\", defaulting to %d\n", 173 "nfs.read_size", nfs_read_size, NFSREAD_MIN_SIZE); 174 nfs_read_size = NFSREAD_MAX_SIZE; 175 } 176 snprintf(buf, sizeof (buf), "%d", nfs_read_size); 177 setenv("nfs.read_size", buf, 1); 178 } 179 180 /* 181 * Fetch the root file handle (call mount daemon) 182 * Return zero or error number. 183 */ 184 int 185 nfs_getrootfh(struct iodesc *d, char *path, uint32_t *fhlenp, u_char *fhp) 186 { 187 void *pkt = NULL; 188 int len; 189 struct args { 190 uint32_t len; 191 char path[FNAME_SIZE]; 192 } *args; 193 struct repl { 194 uint32_t errno; 195 uint32_t fhsize; 196 u_char fh[NFS_V3MAXFHSIZE]; 197 uint32_t authcnt; 198 uint32_t auth[7]; 199 } *repl; 200 struct { 201 uint32_t h[RPC_HEADER_WORDS]; 202 struct args d; 203 } sdata; 204 size_t cc; 205 206 #ifdef NFS_DEBUG 207 if (debug) 208 printf("nfs_getrootfh: %s\n", path); 209 #endif 210 211 args = &sdata.d; 212 213 bzero(args, sizeof(*args)); 214 len = strlen(path); 215 if (len > sizeof(args->path)) 216 len = sizeof(args->path); 217 args->len = htonl(len); 218 bcopy(path, args->path, len); 219 len = sizeof(uint32_t) + roundup(len, sizeof(uint32_t)); 220 221 cc = rpc_call(d, RPCPROG_MNT, RPCMNT_VER3, RPCMNT_MOUNT, 222 args, len, (void **)&repl, &pkt); 223 if (cc == -1) { 224 free(pkt); 225 /* errno was set by rpc_call */ 226 return (errno); 227 } 228 if (cc < 2 * sizeof (uint32_t)) { 229 free(pkt); 230 return (EBADRPC); 231 } 232 if (repl->errno != 0) { 233 free(pkt); 234 return (ntohl(repl->errno)); 235 } 236 *fhlenp = ntohl(repl->fhsize); 237 bcopy(repl->fh, fhp, *fhlenp); 238 239 set_nfs_read_size(); 240 free(pkt); 241 return (0); 242 } 243 244 /* 245 * Lookup a file. Store handle and attributes. 246 * Return zero or error number. 247 */ 248 int 249 nfs_lookupfh(struct nfs_iodesc *d, const char *name, struct nfs_iodesc *newfd) 250 { 251 void *pkt = NULL; 252 int len, rlen, pos; 253 struct args { 254 uint32_t fhsize; 255 uint32_t fhplusname[1 + 256 (NFS_V3MAXFHSIZE + FNAME_SIZE) / sizeof(uint32_t)]; 257 } *args; 258 struct repl { 259 uint32_t errno; 260 uint32_t fhsize; 261 uint32_t fhplusattr[(NFS_V3MAXFHSIZE + 262 2 * (sizeof(uint32_t) + 263 sizeof(struct nfsv3_fattrs))) / sizeof(uint32_t)]; 264 } *repl; 265 struct { 266 uint32_t h[RPC_HEADER_WORDS]; 267 struct args d; 268 } sdata; 269 ssize_t cc; 270 271 #ifdef NFS_DEBUG 272 if (debug) 273 printf("lookupfh: called\n"); 274 #endif 275 276 args = &sdata.d; 277 278 bzero(args, sizeof(*args)); 279 args->fhsize = htonl(d->fhsize); 280 bcopy(d->fh, args->fhplusname, d->fhsize); 281 len = strlen(name); 282 if (len > FNAME_SIZE) 283 len = FNAME_SIZE; 284 pos = roundup(d->fhsize, sizeof(uint32_t)) / sizeof(uint32_t); 285 args->fhplusname[pos++] = htonl(len); 286 bcopy(name, &args->fhplusname[pos], len); 287 len = sizeof(uint32_t) + pos * sizeof(uint32_t) + 288 roundup(len, sizeof(uint32_t)); 289 290 cc = rpc_call(d->iodesc, NFS_PROG, NFS_VER3, NFSPROCV3_LOOKUP, 291 args, len, (void **)&repl, &pkt); 292 if (cc == -1) { 293 free(pkt); 294 return (errno); /* XXX - from rpc_call */ 295 } 296 if (cc < 2 * sizeof(uint32_t)) { 297 free(pkt); 298 return (EIO); 299 } 300 if (repl->errno != 0) { 301 free(pkt); 302 /* saerrno.h now matches NFS error numbers. */ 303 return (ntohl(repl->errno)); 304 } 305 newfd->fhsize = ntohl(repl->fhsize); 306 bcopy(repl->fhplusattr, &newfd->fh, newfd->fhsize); 307 pos = roundup(newfd->fhsize, sizeof(uint32_t)) / sizeof(uint32_t); 308 if (repl->fhplusattr[pos++] == 0) { 309 free(pkt); 310 return (EIO); 311 } 312 bcopy(&repl->fhplusattr[pos], &newfd->fa, sizeof(newfd->fa)); 313 free(pkt); 314 return (0); 315 } 316 317 /* 318 * Get the destination of a symbolic link. 319 */ 320 int 321 nfs_readlink(struct nfs_iodesc *d, char *buf) 322 { 323 void *pkt = NULL; 324 struct args { 325 uint32_t fhsize; 326 u_char fh[NFS_V3MAXFHSIZE]; 327 } *args; 328 struct repl { 329 uint32_t errno; 330 uint32_t ok; 331 struct nfsv3_fattrs fa; 332 uint32_t len; 333 u_char path[NFS_MAXPATHLEN]; 334 } *repl; 335 struct { 336 uint32_t h[RPC_HEADER_WORDS]; 337 struct args d; 338 } sdata; 339 ssize_t cc; 340 int rc = 0; 341 342 #ifdef NFS_DEBUG 343 if (debug) 344 printf("readlink: called\n"); 345 #endif 346 347 args = &sdata.d; 348 349 bzero(args, sizeof(*args)); 350 args->fhsize = htonl(d->fhsize); 351 bcopy(d->fh, args->fh, d->fhsize); 352 cc = rpc_call(d->iodesc, NFS_PROG, NFS_VER3, NFSPROCV3_READLINK, 353 args, sizeof(uint32_t) + roundup(d->fhsize, sizeof(uint32_t)), 354 (void **)&repl, &pkt); 355 if (cc == -1) 356 return (errno); 357 358 if (cc < 2 * sizeof(uint32_t)) { 359 rc = EIO; 360 goto done; 361 } 362 363 if (repl->errno != 0) { 364 rc = ntohl(repl->errno); 365 goto done; 366 } 367 368 if (repl->ok == 0) { 369 rc = EIO; 370 goto done; 371 } 372 373 repl->len = ntohl(repl->len); 374 if (repl->len > NFS_MAXPATHLEN) { 375 rc = ENAMETOOLONG; 376 goto done; 377 } 378 379 bcopy(repl->path, buf, repl->len); 380 buf[repl->len] = 0; 381 done: 382 free(pkt); 383 return (rc); 384 } 385 386 /* 387 * Read data from a file. 388 * Return transfer count or -1 (and set errno) 389 */ 390 ssize_t 391 nfs_readdata(struct nfs_iodesc *d, off_t off, void *addr, size_t len) 392 { 393 void *pkt = NULL; 394 struct args { 395 uint32_t fhsize; 396 uint32_t fhoffcnt[NFS_V3MAXFHSIZE / sizeof(uint32_t) + 3]; 397 } *args; 398 struct repl { 399 uint32_t errno; 400 uint32_t ok; 401 struct nfsv3_fattrs fa; 402 uint32_t count; 403 uint32_t eof; 404 uint32_t len; 405 u_char data[NFSREAD_MAX_SIZE]; 406 } *repl; 407 struct { 408 uint32_t h[RPC_HEADER_WORDS]; 409 struct args d; 410 } sdata; 411 size_t cc; 412 long x; 413 int hlen, rlen, pos; 414 415 args = &sdata.d; 416 417 bzero(args, sizeof(*args)); 418 args->fhsize = htonl(d->fhsize); 419 bcopy(d->fh, args->fhoffcnt, d->fhsize); 420 pos = roundup(d->fhsize, sizeof(uint32_t)) / sizeof(uint32_t); 421 args->fhoffcnt[pos++] = 0; 422 args->fhoffcnt[pos++] = htonl((uint32_t)off); 423 if (len > nfs_read_size) 424 len = nfs_read_size; 425 args->fhoffcnt[pos] = htonl((uint32_t)len); 426 hlen = offsetof(struct repl, data[0]); 427 428 cc = rpc_call(d->iodesc, NFS_PROG, NFS_VER3, NFSPROCV3_READ, 429 args, 4 * sizeof(uint32_t) + roundup(d->fhsize, sizeof(uint32_t)), 430 (void **)&repl, &pkt); 431 if (cc == -1) { 432 /* errno was already set by rpc_call */ 433 return (-1); 434 } 435 if (cc < hlen) { 436 errno = EBADRPC; 437 free(pkt); 438 return (-1); 439 } 440 if (repl->errno != 0) { 441 errno = ntohl(repl->errno); 442 free(pkt); 443 return (-1); 444 } 445 rlen = cc - hlen; 446 x = ntohl(repl->count); 447 if (rlen < x) { 448 printf("nfsread: short packet, %d < %ld\n", rlen, x); 449 errno = EBADRPC; 450 free(pkt); 451 return (-1); 452 } 453 bcopy(repl->data, addr, x); 454 free(pkt); 455 return (x); 456 } 457 458 /* 459 * Open a file. 460 * return zero or error number 461 */ 462 int 463 nfs_open(const char *upath, struct open_file *f) 464 { 465 struct iodesc *desc; 466 struct nfs_iodesc *currfd; 467 char buf[2 * NFS_V3MAXFHSIZE + 3]; 468 u_char *fh; 469 char *cp; 470 int i; 471 struct nfs_iodesc *newfd; 472 struct nfsv3_fattrs *fa; 473 char *ncp; 474 int c; 475 char namebuf[NFS_MAXPATHLEN + 1]; 476 char linkbuf[NFS_MAXPATHLEN + 1]; 477 int nlinks = 0; 478 int error; 479 char *path; 480 481 if (netproto != NET_NFS) 482 return (EINVAL); 483 484 #ifdef NFS_DEBUG 485 if (debug) 486 printf("nfs_open: %s (rootpath=%s)\n", upath, rootpath); 487 #endif 488 if (!rootpath[0]) { 489 printf("no rootpath, no nfs\n"); 490 return (ENXIO); 491 } 492 493 if (f->f_dev->dv_type != DEVT_NET) 494 return (EINVAL); 495 496 if (!(desc = socktodesc(*(int *)(f->f_devdata)))) 497 return (EINVAL); 498 499 /* Bind to a reserved port. */ 500 desc->myport = htons(--rpc_port); 501 desc->destip = rootip; 502 if ((error = nfs_getrootfh(desc, rootpath, &nfs_root_node.fhsize, 503 nfs_root_node.fh))) 504 return (error); 505 nfs_root_node.fa.fa_type = htonl(NFDIR); 506 nfs_root_node.fa.fa_mode = htonl(0755); 507 nfs_root_node.fa.fa_nlink = htonl(2); 508 nfs_root_node.iodesc = desc; 509 510 fh = &nfs_root_node.fh[0]; 511 buf[0] = 'X'; 512 cp = &buf[1]; 513 for (i = 0; i < nfs_root_node.fhsize; i++, cp += 2) 514 sprintf(cp, "%02x", fh[i]); 515 sprintf(cp, "X"); 516 setenv("boot.nfsroot.server", inet_ntoa(rootip), 1); 517 setenv("boot.nfsroot.path", rootpath, 1); 518 setenv("boot.nfsroot.nfshandle", buf, 1); 519 sprintf(buf, "%d", nfs_root_node.fhsize); 520 setenv("boot.nfsroot.nfshandlelen", buf, 1); 521 522 /* Allocate file system specific data structure */ 523 currfd = malloc(sizeof(*newfd)); 524 if (currfd == NULL) { 525 error = ENOMEM; 526 goto out; 527 } 528 bcopy(&nfs_root_node, currfd, sizeof(*currfd)); 529 newfd = NULL; 530 531 cp = path = strdup(upath); 532 if (path == NULL) { 533 error = ENOMEM; 534 goto out; 535 } 536 while (*cp) { 537 /* 538 * Remove extra separators 539 */ 540 while (*cp == '/') 541 cp++; 542 543 if (*cp == '\0') 544 break; 545 /* 546 * Check that current node is a directory. 547 */ 548 if (currfd->fa.fa_type != htonl(NFDIR)) { 549 error = ENOTDIR; 550 goto out; 551 } 552 553 /* allocate file system specific data structure */ 554 newfd = malloc(sizeof(*newfd)); 555 if (newfd == NULL) { 556 error = ENOMEM; 557 goto out; 558 } 559 newfd->iodesc = currfd->iodesc; 560 561 /* 562 * Get next component of path name. 563 */ 564 { 565 int len = 0; 566 567 ncp = cp; 568 while ((c = *cp) != '\0' && c != '/') { 569 if (++len > NFS_MAXNAMLEN) { 570 error = ENOENT; 571 goto out; 572 } 573 cp++; 574 } 575 *cp = '\0'; 576 } 577 578 /* lookup a file handle */ 579 error = nfs_lookupfh(currfd, ncp, newfd); 580 *cp = c; 581 if (error) 582 goto out; 583 584 /* 585 * Check for symbolic link 586 */ 587 if (newfd->fa.fa_type == htonl(NFLNK)) { 588 int link_len, len; 589 590 error = nfs_readlink(newfd, linkbuf); 591 if (error) 592 goto out; 593 594 link_len = strlen(linkbuf); 595 len = strlen(cp); 596 597 if (link_len + len > MAXPATHLEN 598 || ++nlinks > MAXSYMLINKS) { 599 error = ENOENT; 600 goto out; 601 } 602 603 bcopy(cp, &namebuf[link_len], len + 1); 604 bcopy(linkbuf, namebuf, link_len); 605 606 /* 607 * If absolute pathname, restart at root. 608 * If relative pathname, restart at parent directory. 609 */ 610 cp = namebuf; 611 if (*cp == '/') 612 bcopy(&nfs_root_node, currfd, sizeof(*currfd)); 613 614 free(newfd); 615 newfd = NULL; 616 617 continue; 618 } 619 620 free(currfd); 621 currfd = newfd; 622 newfd = NULL; 623 } 624 625 error = 0; 626 627 out: 628 free(newfd); 629 free(path); 630 if (!error) { 631 currfd->off = 0; 632 currfd->cookie = 0; 633 f->f_fsdata = (void *)currfd; 634 return (0); 635 } 636 637 #ifdef NFS_DEBUG 638 if (debug) 639 printf("nfs_open: %s lookupfh failed: %s\n", 640 path, strerror(error)); 641 #endif 642 free(currfd); 643 644 return (error); 645 } 646 647 int 648 nfs_close(struct open_file *f) 649 { 650 struct nfs_iodesc *fp = (struct nfs_iodesc *)f->f_fsdata; 651 652 #ifdef NFS_DEBUG 653 if (debug) 654 printf("nfs_close: fp=0x%lx\n", (u_long)fp); 655 #endif 656 657 free(fp); 658 f->f_fsdata = NULL; 659 660 return (0); 661 } 662 663 /* 664 * read a portion of a file 665 */ 666 int 667 nfs_read(struct open_file *f, void *buf, size_t size, size_t *resid) 668 { 669 struct nfs_iodesc *fp = (struct nfs_iodesc *)f->f_fsdata; 670 ssize_t cc; 671 char *addr = buf; 672 673 #ifdef NFS_DEBUG 674 if (debug) 675 printf("nfs_read: size=%lu off=%d\n", (u_long)size, 676 (int)fp->off); 677 #endif 678 while ((int)size > 0) { 679 twiddle(16); 680 cc = nfs_readdata(fp, fp->off, (void *)addr, size); 681 /* XXX maybe should retry on certain errors */ 682 if (cc == -1) { 683 #ifdef NFS_DEBUG 684 if (debug) 685 printf("nfs_read: read: %s", strerror(errno)); 686 #endif 687 return (errno); /* XXX - from nfs_readdata */ 688 } 689 if (cc == 0) { 690 #ifdef NFS_DEBUG 691 if (debug) 692 printf("nfs_read: hit EOF unexpectantly"); 693 #endif 694 goto ret; 695 } 696 fp->off += cc; 697 addr += cc; 698 size -= cc; 699 } 700 ret: 701 if (resid) 702 *resid = size; 703 704 return (0); 705 } 706 707 /* 708 * Not implemented. 709 */ 710 int 711 nfs_write(struct open_file *f, void *buf, size_t size, size_t *resid) 712 { 713 return (EROFS); 714 } 715 716 off_t 717 nfs_seek(struct open_file *f, off_t offset, int where) 718 { 719 struct nfs_iodesc *d = (struct nfs_iodesc *)f->f_fsdata; 720 uint32_t size = ntohl(d->fa.fa_size.val[1]); 721 722 switch (where) { 723 case SEEK_SET: 724 d->off = offset; 725 break; 726 case SEEK_CUR: 727 d->off += offset; 728 break; 729 case SEEK_END: 730 d->off = size - offset; 731 break; 732 default: 733 errno = EINVAL; 734 return (-1); 735 } 736 737 return (d->off); 738 } 739 740 /* NFNON=0, NFREG=1, NFDIR=2, NFBLK=3, NFCHR=4, NFLNK=5, NFSOCK=6, NFFIFO=7 */ 741 int nfs_stat_types[9] = { 742 0, S_IFREG, S_IFDIR, S_IFBLK, S_IFCHR, S_IFLNK, S_IFSOCK, S_IFIFO, 0 }; 743 744 int 745 nfs_stat(struct open_file *f, struct stat *sb) 746 { 747 struct nfs_iodesc *fp = (struct nfs_iodesc *)f->f_fsdata; 748 uint32_t ftype, mode; 749 750 ftype = ntohl(fp->fa.fa_type); 751 mode = ntohl(fp->fa.fa_mode); 752 mode |= nfs_stat_types[ftype & 7]; 753 754 sb->st_mode = mode; 755 sb->st_nlink = ntohl(fp->fa.fa_nlink); 756 sb->st_uid = ntohl(fp->fa.fa_uid); 757 sb->st_gid = ntohl(fp->fa.fa_gid); 758 sb->st_size = ntohl(fp->fa.fa_size.val[1]); 759 760 return (0); 761 } 762 763 static int 764 nfs_readdir(struct open_file *f, struct dirent *d) 765 { 766 struct nfs_iodesc *fp = (struct nfs_iodesc *)f->f_fsdata; 767 struct nfsv3_readdir_repl *repl; 768 struct nfsv3_readdir_entry *rent; 769 static void *pkt = NULL; 770 static char *buf; 771 static struct nfs_iodesc *pfp = NULL; 772 static uint64_t cookie = 0; 773 size_t cc; 774 int pos, rc; 775 776 struct args { 777 uint32_t fhsize; 778 uint32_t fhpluscookie[5 + NFS_V3MAXFHSIZE]; 779 } *args; 780 struct { 781 uint32_t h[RPC_HEADER_WORDS]; 782 struct args d; 783 } sdata; 784 785 if (fp != pfp || fp->off != cookie) { 786 pfp = NULL; 787 refill: 788 free(pkt); 789 pkt = NULL; 790 args = &sdata.d; 791 bzero(args, sizeof(*args)); 792 793 args->fhsize = htonl(fp->fhsize); 794 bcopy(fp->fh, args->fhpluscookie, fp->fhsize); 795 pos = roundup(fp->fhsize, sizeof(uint32_t)) / sizeof(uint32_t); 796 args->fhpluscookie[pos++] = htonl(fp->off >> 32); 797 args->fhpluscookie[pos++] = htonl(fp->off); 798 args->fhpluscookie[pos++] = htonl(fp->cookie >> 32); 799 args->fhpluscookie[pos++] = htonl(fp->cookie); 800 args->fhpluscookie[pos] = htonl(NFS_READDIRSIZE); 801 802 cc = rpc_call(fp->iodesc, NFS_PROG, NFS_VER3, NFSPROCV3_READDIR, 803 args, 6 * sizeof(uint32_t) + 804 roundup(fp->fhsize, sizeof(uint32_t)), 805 (void **)&buf, &pkt); 806 if (cc == -1) { 807 rc = errno; 808 goto err; 809 } 810 repl = (struct nfsv3_readdir_repl *)buf; 811 if (repl->errno != 0) { 812 rc = ntohl(repl->errno); 813 goto err; 814 } 815 pfp = fp; 816 cookie = fp->off; 817 fp->cookie = ((uint64_t)ntohl(repl->cookiev0) << 32) | 818 ntohl(repl->cookiev1); 819 buf += sizeof (struct nfsv3_readdir_repl); 820 } 821 rent = (struct nfsv3_readdir_entry *)buf; 822 823 if (rent->follows == 0) { 824 /* fid0 is actually eof */ 825 if (rent->fid0 != 0) { 826 rc = ENOENT; 827 goto err; 828 } 829 goto refill; 830 } 831 832 d->d_namlen = ntohl(rent->len); 833 bcopy(rent->nameplus, d->d_name, d->d_namlen); 834 d->d_name[d->d_namlen] = '\0'; 835 836 pos = roundup(d->d_namlen, sizeof(uint32_t)) / sizeof(uint32_t); 837 fp->off = cookie = ((uint64_t)ntohl(rent->nameplus[pos]) << 32) | 838 ntohl(rent->nameplus[pos + 1]); 839 pos += 2; 840 buf = (u_char *)&rent->nameplus[pos]; 841 return (0); 842 843 err: 844 free(pkt); 845 pkt = NULL; 846 pfp = NULL; 847 cookie = 0; 848 return (rc); 849 } 850