1 /* 2 * Copyright (c) 1987, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #ifndef lint 35 static const char copyright[] = 36 "@(#) Copyright (c) 1987, 1993\n\ 37 The Regents of the University of California. All rights reserved.\n"; 38 #endif /* not lint */ 39 40 #ifndef lint 41 #if 0 42 static char sccsid[] = "From: @(#)xinstall.c 8.1 (Berkeley) 7/21/93"; 43 #endif 44 static const char rcsid[] = 45 "$FreeBSD$"; 46 #endif /* not lint */ 47 48 /*- 49 * Todo: 50 * o for -C, compare original files except in -s case. 51 * o for -C, don't change anything if nothing needs be changed. In 52 * particular, don't toggle the immutable flags just to allow null 53 * attribute changes and don't clear the dump flag. (I think inode 54 * ctimes are not updated for null attribute changes, but this is a 55 * bug.) 56 * o independent of -C, if a copy must be made, then copy to a tmpfile, 57 * set all attributes except the immutable flags, then rename, then 58 * set the immutable flags. It's annoying that the immutable flags 59 * defeat the atomicicity of rename - it seems that there must be 60 * a window where the target is not immutable. 61 */ 62 63 #include <sys/param.h> 64 #include <sys/wait.h> 65 #include <sys/mman.h> 66 #include <sys/stat.h> 67 #include <sys/mount.h> 68 69 #include <ctype.h> 70 #include <err.h> 71 #include <errno.h> 72 #include <fcntl.h> 73 #include <grp.h> 74 #include <paths.h> 75 #include <pwd.h> 76 #include <stdio.h> 77 #include <stdlib.h> 78 #include <string.h> 79 #include <unistd.h> 80 #include <sysexits.h> 81 #include <utime.h> 82 83 #include "pathnames.h" 84 85 /* Bootstrap aid - this doesn't exist in most older releases */ 86 #ifndef MAP_FAILED 87 #define MAP_FAILED ((void *)-1) /* from <sys/mman.h> */ 88 #endif 89 90 int debug, docompare, docopy, dodir, dopreserve, dostrip, nommap, verbose; 91 int mode = S_IRWXU|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH; 92 char *group, *owner, pathbuf[MAXPATHLEN]; 93 char pathbuf2[MAXPATHLEN]; 94 95 #define DIRECTORY 0x01 /* Tell install it's a directory. */ 96 #define SETFLAGS 0x02 /* Tell install to set flags. */ 97 #define NOCHANGEBITS (UF_IMMUTABLE | UF_APPEND | SF_IMMUTABLE | SF_APPEND) 98 99 void copy __P((int, char *, int, char *, off_t)); 100 int compare __P((int, const char *, int, const char *, 101 const struct stat *, const struct stat *)); 102 void install __P((char *, char *, u_long, u_int)); 103 void install_dir __P((char *)); 104 u_long string_to_flags __P((char **, u_long *, u_long *)); 105 void strip __P((char *)); 106 void usage __P((void)); 107 int trymmap __P((int)); 108 109 #define ALLOW_NUMERIC_IDS 1 110 #ifdef ALLOW_NUMERIC_IDS 111 112 uid_t uid = -1; 113 gid_t gid = -1; 114 115 uid_t resolve_uid __P((char *)); 116 gid_t resolve_gid __P((char *)); 117 u_long numeric_id __P((char *, char *)); 118 119 #else 120 121 struct passwd *pp; 122 struct group *gp; 123 124 #endif /* ALLOW_NUMERIC_IDS */ 125 126 int 127 main(argc, argv) 128 int argc; 129 char *argv[]; 130 { 131 struct stat from_sb, to_sb; 132 mode_t *set; 133 u_long fset; 134 u_int iflags; 135 int ch, no_target; 136 char *flags, *to_name; 137 138 iflags = 0; 139 while ((ch = getopt(argc, argv, "CcdDf:g:m:Mo:psv")) != -1) 140 switch((char)ch) { 141 case 'C': 142 docompare = docopy = 1; 143 break; 144 case 'c': 145 docopy = 1; 146 break; 147 case 'D': 148 debug++; 149 break; 150 case 'd': 151 dodir = 1; 152 break; 153 case 'f': 154 flags = optarg; 155 if (string_to_flags(&flags, &fset, NULL)) 156 errx(EX_USAGE, "%s: invalid flag", flags); 157 iflags |= SETFLAGS; 158 break; 159 case 'g': 160 group = optarg; 161 break; 162 case 'm': 163 if (!(set = setmode(optarg))) 164 errx(EX_USAGE, "invalid file mode: %s", 165 optarg); 166 mode = getmode(set, 0); 167 free(set); 168 break; 169 case 'M': 170 nommap = 1; 171 break; 172 case 'o': 173 owner = optarg; 174 break; 175 case 'p': 176 docompare = docopy = dopreserve = 1; 177 break; 178 case 's': 179 dostrip = 1; 180 break; 181 case 'v': 182 verbose = 1; 183 break; 184 case '?': 185 default: 186 usage(); 187 } 188 argc -= optind; 189 argv += optind; 190 191 /* some options make no sense when creating directories */ 192 if (dostrip && dodir) 193 usage(); 194 195 /* must have at least two arguments, except when creating directories */ 196 if (argc < 2 && !dodir) 197 usage(); 198 199 #ifdef ALLOW_NUMERIC_IDS 200 201 if (owner) 202 uid = resolve_uid(owner); 203 if (group) 204 gid = resolve_gid(group); 205 206 #else 207 208 /* get group and owner id's */ 209 if (owner && !(pp = getpwnam(owner))) 210 errx(EX_NOUSER, "unknown user %s", owner); 211 if (group && !(gp = getgrnam(group))) 212 errx(EX_NOUSER, "unknown group %s", group); 213 214 #endif /* ALLOW_NUMERIC_IDS */ 215 216 if (dodir) { 217 for (; *argv != NULL; ++argv) 218 install_dir(*argv); 219 exit(EX_OK); 220 /* NOTREACHED */ 221 } 222 223 no_target = stat(to_name = argv[argc - 1], &to_sb); 224 if (!no_target && (to_sb.st_mode & S_IFMT) == S_IFDIR) { 225 for (; *argv != to_name; ++argv) 226 install(*argv, to_name, fset, iflags | DIRECTORY); 227 exit(EX_OK); 228 /* NOTREACHED */ 229 } 230 231 /* can't do file1 file2 directory/file */ 232 if (argc != 2) 233 usage(); 234 235 if (!no_target) { 236 if (stat(*argv, &from_sb)) 237 err(EX_OSERR, "%s", *argv); 238 if (!S_ISREG(to_sb.st_mode)) { 239 errno = EFTYPE; 240 err(EX_OSERR, "%s", to_name); 241 } 242 if (to_sb.st_dev == from_sb.st_dev && 243 to_sb.st_ino == from_sb.st_ino) 244 errx(EX_USAGE, 245 "%s and %s are the same file", *argv, to_name); 246 /* 247 * XXX - It's not at all clear why this code was here, since it completely 248 * duplicates code install(). The version in install() handles the -C flag 249 * correctly, so we'll just disable this for now. 250 */ 251 #if 0 252 /* 253 * Unlink now... avoid ETXTBSY errors later. Try and turn 254 * off the append/immutable bits -- if we fail, go ahead, 255 * it might work. 256 */ 257 if (to_sb.st_flags & NOCHANGEBITS) 258 (void)chflags(to_name, 259 to_sb.st_flags & ~(NOCHANGEBITS)); 260 (void)unlink(to_name); 261 #endif 262 } 263 install(*argv, to_name, fset, iflags); 264 exit(EX_OK); 265 /* NOTREACHED */ 266 } 267 268 #ifdef ALLOW_NUMERIC_IDS 269 270 uid_t 271 resolve_uid(s) 272 char *s; 273 { 274 struct passwd *pw; 275 276 return ((pw = getpwnam(s)) == NULL) ? 277 (uid_t) numeric_id(s, "user") : pw->pw_uid; 278 } 279 280 gid_t 281 resolve_gid(s) 282 char *s; 283 { 284 struct group *gr; 285 286 return ((gr = getgrnam(s)) == NULL) ? 287 (gid_t) numeric_id(s, "group") : gr->gr_gid; 288 } 289 290 u_long 291 numeric_id(name, type) 292 char *name, *type; 293 { 294 u_long val; 295 char *ep; 296 297 /* 298 * XXX 299 * We know that uid_t's and gid_t's are unsigned longs. 300 */ 301 errno = 0; 302 val = strtoul(name, &ep, 10); 303 if (errno) 304 err(EX_NOUSER, "%s", name); 305 if (*ep != '\0') 306 errx(EX_NOUSER, "unknown %s %s", type, name); 307 return (val); 308 } 309 310 #endif /* ALLOW_NUMERIC_IDS */ 311 312 /* 313 * install -- 314 * build a path name and install the file 315 */ 316 void 317 install(from_name, to_name, fset, flags) 318 char *from_name, *to_name; 319 u_long fset; 320 u_int flags; 321 { 322 struct stat from_sb, to_sb; 323 int devnull, from_fd, to_fd, serrno; 324 char *p, *old_to_name = 0; 325 326 if (debug >= 2 && !docompare) 327 fprintf(stderr, "install: invoked without -C for %s to %s\n", 328 from_name, to_name); 329 330 /* If try to install NULL file to a directory, fails. */ 331 if (flags & DIRECTORY || strcmp(from_name, _PATH_DEVNULL)) { 332 if (stat(from_name, &from_sb)) 333 err(EX_OSERR, "%s", from_name); 334 if (!S_ISREG(from_sb.st_mode)) { 335 errno = EFTYPE; 336 err(EX_OSERR, "%s", from_name); 337 } 338 /* Build the target path. */ 339 if (flags & DIRECTORY) { 340 (void)snprintf(pathbuf, sizeof(pathbuf), "%s/%s", 341 to_name, 342 (p = strrchr(from_name, '/')) ? ++p : from_name); 343 to_name = pathbuf; 344 } 345 devnull = 0; 346 } else { 347 from_sb.st_flags = 0; /* XXX */ 348 devnull = 1; 349 } 350 351 if (docompare) { 352 old_to_name = to_name; 353 /* 354 * Make a new temporary file in the same file system 355 * (actually, in in the same directory) as the target so 356 * that the temporary file can be renamed to the target. 357 */ 358 snprintf(pathbuf2, sizeof pathbuf2, "%s", to_name); 359 p = strrchr(pathbuf2, '/'); 360 p = (p == NULL ? pathbuf2 : p + 1); 361 snprintf(p, &pathbuf2[sizeof pathbuf2] - p, "INS@XXXX"); 362 to_fd = mkstemp(pathbuf2); 363 if (to_fd < 0) 364 /* XXX should fall back to not comparing. */ 365 err(EX_OSERR, "mkstemp: %s for %s", pathbuf2, to_name); 366 to_name = pathbuf2; 367 } else { 368 /* 369 * Unlink now... avoid errors later. Try to turn off the 370 * append/immutable bits -- if we fail, go ahead, it might 371 * work. 372 */ 373 if (stat(to_name, &to_sb) == 0 && to_sb.st_flags & NOCHANGEBITS) 374 (void)chflags(to_name, to_sb.st_flags & ~NOCHANGEBITS); 375 unlink(to_name); 376 377 /* Create target. */ 378 to_fd = open(to_name, 379 O_CREAT | O_RDWR | O_TRUNC, S_IRUSR | S_IWUSR); 380 if (to_fd < 0) 381 err(EX_OSERR, "%s", to_name); 382 } 383 384 if (!devnull) { 385 if ((from_fd = open(from_name, O_RDONLY, 0)) < 0) { 386 serrno = errno; 387 (void)unlink(to_name); 388 errno = serrno; 389 err(EX_OSERR, "%s", from_name); 390 } 391 copy(from_fd, from_name, to_fd, to_name, from_sb.st_size); 392 (void)close(from_fd); 393 } 394 395 if (dostrip) { 396 (void)close(to_fd); 397 398 strip(to_name); 399 400 /* Reopen target. */ 401 to_fd = open(to_name, O_RDWR, 0); 402 if (to_fd < 0) 403 err(EX_OSERR, "%s", to_name); 404 } 405 406 /* 407 * Unfortunately, because we strip the installed file and not the 408 * original one, it is impossible to do the comparison without 409 * first laboriously copying things over and then comparing. 410 * It may be possible to better optimize the !dostrip case, however. 411 * For further study. 412 */ 413 if (docompare) { 414 struct stat old_sb, new_sb, timestamp_sb; 415 int old_fd; 416 struct utimbuf utb; 417 418 old_fd = open(old_to_name, O_RDONLY, 0); 419 if (old_fd < 0 && errno == ENOENT) 420 goto different; 421 if (old_fd < 0) 422 err(EX_OSERR, "%s", old_to_name); 423 fstat(old_fd, &old_sb); 424 if (old_sb.st_flags & NOCHANGEBITS) 425 (void)fchflags(old_fd, old_sb.st_flags & ~NOCHANGEBITS); 426 fstat(to_fd, &new_sb); 427 if (compare(old_fd, old_to_name, to_fd, to_name, &old_sb, 428 &new_sb)) { 429 different: 430 if (debug != 0) 431 fprintf(stderr, 432 "install: renaming for %s: %s to %s\n", 433 from_name, to_name, old_to_name); 434 if (verbose != 0) 435 printf("install: %s -> %s\n", 436 from_name, old_to_name); 437 if (dopreserve && stat(from_name, ×tamp_sb) == 0) { 438 utb.actime = from_sb.st_atime; 439 utb.modtime = from_sb.st_mtime; 440 (void)utime(to_name, &utb); 441 } 442 moveit: 443 if (rename(to_name, old_to_name) < 0) { 444 serrno = errno; 445 unlink(to_name); 446 unlink(old_to_name); 447 errno = serrno; 448 err(EX_OSERR, "rename: %s to %s", to_name, 449 old_to_name); 450 } 451 close(old_fd); 452 } else { 453 if (old_sb.st_nlink != 1) { 454 /* 455 * Replace the target, although it hasn't 456 * changed, to snap the extra links. But 457 * preserve the target file times. 458 */ 459 if (fstat(old_fd, ×tamp_sb) == 0) { 460 utb.actime = timestamp_sb.st_atime; 461 utb.modtime = timestamp_sb.st_mtime; 462 (void)utime(to_name, &utb); 463 } 464 goto moveit; 465 } 466 if (unlink(to_name) < 0) 467 err(EX_OSERR, "unlink: %s", to_name); 468 close(to_fd); 469 to_fd = old_fd; 470 } 471 to_name = old_to_name; 472 } 473 474 /* 475 * Set owner, group, mode for target; do the chown first, 476 * chown may lose the setuid bits. 477 */ 478 if ((group || owner) && 479 #ifdef ALLOW_NUMERIC_IDS 480 fchown(to_fd, owner ? uid : -1, group ? gid : -1)) { 481 #else 482 fchown(to_fd, owner ? pp->pw_uid : -1, group ? gp->gr_gid : -1)) { 483 #endif 484 serrno = errno; 485 (void)unlink(to_name); 486 errno = serrno; 487 err(EX_OSERR,"%s: chown/chgrp", to_name); 488 } 489 if (fchmod(to_fd, mode)) { 490 serrno = errno; 491 (void)unlink(to_name); 492 errno = serrno; 493 err(EX_OSERR, "%s: chmod", to_name); 494 } 495 496 /* 497 * If provided a set of flags, set them, otherwise, preserve the 498 * flags, except for the dump flag. 499 * NFS does not support flags. Ignore EOPNOTSUPP flags if we're just 500 * trying to turn off UF_NODUMP. If we're trying to set real flags, 501 * then warn if the the fs doesn't support it, otherwise fail. 502 */ 503 if (fchflags(to_fd, 504 flags & SETFLAGS ? fset : from_sb.st_flags & ~UF_NODUMP)) { 505 if (flags & SETFLAGS) { 506 if (errno == EOPNOTSUPP) 507 warn("%s: chflags", to_name); 508 else { 509 serrno = errno; 510 (void)unlink(to_name); 511 errno = serrno; 512 err(EX_OSERR, "%s: chflags", to_name); 513 } 514 } 515 } 516 517 (void)close(to_fd); 518 if (!docopy && !devnull && unlink(from_name)) 519 err(EX_OSERR, "%s", from_name); 520 } 521 522 /* 523 * compare -- 524 * compare two files; non-zero means files differ 525 */ 526 int 527 compare(int from_fd, const char *from_name, int to_fd, const char *to_name, 528 const struct stat *from_sb, const struct stat *to_sb) 529 { 530 char *p, *q; 531 int rv; 532 size_t tsize; 533 int done_compare; 534 535 rv = 0; 536 if (from_sb->st_size != to_sb->st_size) 537 return 1; 538 539 tsize = (size_t)from_sb->st_size; 540 541 if (tsize <= 8 * 1024 * 1024) { 542 done_compare = 0; 543 if (trymmap(from_fd) && trymmap(to_fd)) { 544 p = mmap(NULL, tsize, PROT_READ, MAP_SHARED, from_fd, (off_t)0); 545 if (p == (char *)MAP_FAILED) 546 goto out; 547 q = mmap(NULL, tsize, PROT_READ, MAP_SHARED, to_fd, (off_t)0); 548 if (q == (char *)MAP_FAILED) { 549 munmap(p, tsize); 550 goto out; 551 } 552 553 rv = memcmp(p, q, tsize); 554 munmap(p, tsize); 555 munmap(q, tsize); 556 done_compare = 1; 557 } 558 out: 559 if (!done_compare) { 560 char buf1[MAXBSIZE]; 561 char buf2[MAXBSIZE]; 562 int n1, n2; 563 564 rv = 0; 565 lseek(from_fd, 0, SEEK_SET); 566 lseek(to_fd, 0, SEEK_SET); 567 while (rv == 0) { 568 n1 = read(from_fd, buf1, sizeof(buf1)); 569 if (n1 == 0) 570 break; /* EOF */ 571 else if (n1 > 0) { 572 n2 = read(to_fd, buf2, n1); 573 if (n2 == n1) 574 rv = memcmp(buf1, buf2, n1); 575 else 576 rv = 1; /* out of sync */ 577 } else 578 rv = 1; /* read failure */ 579 } 580 lseek(from_fd, 0, SEEK_SET); 581 lseek(to_fd, 0, SEEK_SET); 582 } 583 } else 584 rv = 1; /* don't bother in this case */ 585 586 return rv; 587 } 588 589 /* 590 * copy -- 591 * copy from one file to another 592 */ 593 void 594 copy(from_fd, from_name, to_fd, to_name, size) 595 register int from_fd, to_fd; 596 char *from_name, *to_name; 597 off_t size; 598 { 599 register int nr, nw; 600 int serrno; 601 char *p, buf[MAXBSIZE]; 602 int done_copy; 603 604 /* 605 * Mmap and write if less than 8M (the limit is so we don't totally 606 * trash memory on big files. This is really a minor hack, but it 607 * wins some CPU back. 608 */ 609 done_copy = 0; 610 if (size <= 8 * 1048576 && trymmap(from_fd)) { 611 if ((p = mmap(NULL, (size_t)size, PROT_READ, 612 MAP_SHARED, from_fd, (off_t)0)) == (char *)MAP_FAILED) 613 goto out; 614 if ((nw = write(to_fd, p, size)) != size) { 615 serrno = errno; 616 (void)unlink(to_name); 617 errno = nw > 0 ? EIO : serrno; 618 err(EX_OSERR, "%s", to_name); 619 } 620 done_copy = 1; 621 out: 622 } 623 if (!done_copy) { 624 while ((nr = read(from_fd, buf, sizeof(buf))) > 0) 625 if ((nw = write(to_fd, buf, nr)) != nr) { 626 serrno = errno; 627 (void)unlink(to_name); 628 errno = nw > 0 ? EIO : serrno; 629 err(EX_OSERR, "%s", to_name); 630 } 631 if (nr != 0) { 632 serrno = errno; 633 (void)unlink(to_name); 634 errno = serrno; 635 err(EX_OSERR, "%s", from_name); 636 } 637 } 638 } 639 640 /* 641 * strip -- 642 * use strip(1) to strip the target file 643 */ 644 void 645 strip(to_name) 646 char *to_name; 647 { 648 int serrno, status; 649 650 switch (fork()) { 651 case -1: 652 serrno = errno; 653 (void)unlink(to_name); 654 errno = serrno; 655 err(EX_TEMPFAIL, "fork"); 656 case 0: 657 execlp("strip", "strip", to_name, NULL); 658 err(EX_OSERR, "exec(strip)"); 659 default: 660 if (wait(&status) == -1 || status) { 661 (void)unlink(to_name); 662 exit(EX_SOFTWARE); 663 /* NOTREACHED */ 664 } 665 } 666 } 667 668 /* 669 * install_dir -- 670 * build directory heirarchy 671 */ 672 void 673 install_dir(path) 674 char *path; 675 { 676 register char *p; 677 struct stat sb; 678 int ch; 679 680 for (p = path;; ++p) 681 if (!*p || (p != path && *p == '/')) { 682 ch = *p; 683 *p = '\0'; 684 if (stat(path, &sb)) { 685 if (errno != ENOENT || mkdir(path, 0755) < 0) { 686 err(EX_OSERR, "mkdir %s", path); 687 /* NOTREACHED */ 688 } 689 } else if (!S_ISDIR(sb.st_mode)) 690 errx(EX_OSERR, "%s exists but is not a directory", path); 691 if (!(*p = ch)) 692 break; 693 } 694 695 if ((gid != (gid_t)-1 || uid != (uid_t)-1) && chown(path, uid, gid)) 696 warn("chown %u:%u %s", uid, gid, path); 697 if (chmod(path, mode)) 698 warn("chmod %o %s", mode, path); 699 } 700 701 /* 702 * usage -- 703 * print a usage message and die 704 */ 705 void 706 usage() 707 { 708 (void)fprintf(stderr,"\ 709 usage: install [-CcDpsv] [-f flags] [-g group] [-m mode] [-o owner] file1 file2\n\ 710 install [-CcDpsv] [-f flags] [-g group] [-m mode] [-o owner] file1 ...\n\ 711 fileN directory\n\ 712 install -d [-v] [-g group] [-m mode] [-o owner] directory ...\n"); 713 exit(EX_USAGE); 714 /* NOTREACHED */ 715 } 716 717 /* 718 * trymmap -- 719 * return true (1) if mmap should be tried, false (0) if not. 720 */ 721 int 722 trymmap(fd) 723 int fd; 724 { 725 /* 726 * The ifdef is for bootstrapping - f_fstypename doesn't exist in 727 * pre-Lite2-merge systems. 728 */ 729 #ifdef MFSNAMELEN 730 struct statfs stfs; 731 732 if (nommap || fstatfs(fd, &stfs) != 0) 733 return (0); 734 if (strcmp(stfs.f_fstypename, "ufs") == 0 || 735 strcmp(stfs.f_fstypename, "cd9660") == 0) 736 return (1); 737 #endif 738 return (0); 739 } 740