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 #if 0 41 #ifndef lint 42 static char sccsid[] = "@(#)xinstall.c 8.1 (Berkeley) 7/21/93"; 43 #endif /* not lint */ 44 #endif 45 46 #include <sys/cdefs.h> 47 __FBSDID("$FreeBSD$"); 48 49 #include <sys/param.h> 50 #include <sys/mman.h> 51 #include <sys/mount.h> 52 #include <sys/stat.h> 53 #include <sys/wait.h> 54 55 #include <ctype.h> 56 #include <err.h> 57 #include <errno.h> 58 #include <fcntl.h> 59 #include <grp.h> 60 #include <paths.h> 61 #include <pwd.h> 62 #include <stdio.h> 63 #include <stdlib.h> 64 #include <string.h> 65 #include <sysexits.h> 66 #include <unistd.h> 67 #include <utime.h> 68 69 #include "pathnames.h" 70 71 /* Bootstrap aid - this doesn't exist in most older releases */ 72 #ifndef MAP_FAILED 73 #define MAP_FAILED ((void *)-1) /* from <sys/mman.h> */ 74 #endif 75 76 #define MAX_CMP_SIZE (16 * 1024 * 1024) 77 78 #define DIRECTORY 0x01 /* Tell install it's a directory. */ 79 #define SETFLAGS 0x02 /* Tell install to set flags. */ 80 #define NOCHANGEBITS (UF_IMMUTABLE | UF_APPEND | SF_IMMUTABLE | SF_APPEND) 81 #define BACKUP_SUFFIX ".old" 82 83 struct passwd *pp; 84 struct group *gp; 85 gid_t gid; 86 uid_t uid; 87 int dobackup, docompare, dodir, dopreserve, dostrip, nommap, safecopy, verbose; 88 mode_t mode = S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH; 89 const char *suffix = BACKUP_SUFFIX; 90 91 void copy(int, const char *, int, const char *, off_t); 92 int compare(int, const char *, size_t, int, const char *, size_t); 93 int create_newfile(const char *, int, struct stat *); 94 int create_tempfile(const char *, char *, size_t); 95 void install(const char *, const char *, u_long, u_int); 96 void install_dir(char *); 97 u_long numeric_id(const char *, const char *); 98 void strip(const char *); 99 int trymmap(int); 100 void usage(void); 101 102 int 103 main(int argc, char *argv[]) 104 { 105 struct stat from_sb, to_sb; 106 mode_t *set; 107 u_long fset; 108 int ch, no_target; 109 u_int iflags; 110 char *flags; 111 const char *group, *owner, *to_name; 112 113 iflags = 0; 114 group = owner = NULL; 115 while ((ch = getopt(argc, argv, "B:bCcdf:g:Mm:o:pSsv")) != -1) 116 switch((char)ch) { 117 case 'B': 118 suffix = optarg; 119 /* FALLTHROUGH */ 120 case 'b': 121 dobackup = 1; 122 break; 123 case 'C': 124 docompare = 1; 125 break; 126 case 'c': 127 /* For backwards compatibility. */ 128 break; 129 case 'd': 130 dodir = 1; 131 break; 132 case 'f': 133 flags = optarg; 134 if (strtofflags(&flags, &fset, NULL)) 135 errx(EX_USAGE, "%s: invalid flag", flags); 136 iflags |= SETFLAGS; 137 break; 138 case 'g': 139 group = optarg; 140 break; 141 case 'M': 142 nommap = 1; 143 break; 144 case 'm': 145 if (!(set = setmode(optarg))) 146 errx(EX_USAGE, "invalid file mode: %s", 147 optarg); 148 mode = getmode(set, 0); 149 free(set); 150 break; 151 case 'o': 152 owner = optarg; 153 break; 154 case 'p': 155 docompare = dopreserve = 1; 156 break; 157 case 'S': 158 safecopy = 1; 159 break; 160 case 's': 161 dostrip = 1; 162 break; 163 case 'v': 164 verbose = 1; 165 break; 166 case '?': 167 default: 168 usage(); 169 } 170 argc -= optind; 171 argv += optind; 172 173 /* some options make no sense when creating directories */ 174 if (dostrip && dodir) 175 usage(); 176 177 /* must have at least two arguments, except when creating directories */ 178 if (argc < 2 && !dodir) 179 usage(); 180 181 /* need to make a temp copy so we can compare stripped version */ 182 if (docompare && dostrip) 183 safecopy = 1; 184 185 /* get group and owner id's */ 186 if (group != NULL) { 187 if ((gp = getgrnam(group)) != NULL) 188 gid = gp->gr_gid; 189 else 190 gid = (gid_t)numeric_id(group, "group"); 191 } else 192 gid = (gid_t)-1; 193 194 if (owner != NULL) { 195 if ((pp = getpwnam(owner)) != NULL) 196 uid = pp->pw_uid; 197 else 198 uid = (uid_t)numeric_id(owner, "user"); 199 } else 200 uid = (uid_t)-1; 201 202 if (dodir) { 203 for (; *argv != NULL; ++argv) 204 install_dir(*argv); 205 exit(EX_OK); 206 /* NOTREACHED */ 207 } 208 209 no_target = stat(to_name = argv[argc - 1], &to_sb); 210 if (!no_target && S_ISDIR(to_sb.st_mode)) { 211 for (; *argv != to_name; ++argv) 212 install(*argv, to_name, fset, iflags | DIRECTORY); 213 exit(EX_OK); 214 /* NOTREACHED */ 215 } 216 217 /* can't do file1 file2 directory/file */ 218 if (argc != 2) 219 usage(); 220 221 if (!no_target) { 222 if (stat(*argv, &from_sb)) 223 err(EX_OSERR, "%s", *argv); 224 if (!S_ISREG(to_sb.st_mode)) { 225 errno = EFTYPE; 226 err(EX_OSERR, "%s", to_name); 227 } 228 if (to_sb.st_dev == from_sb.st_dev && 229 to_sb.st_ino == from_sb.st_ino) 230 errx(EX_USAGE, 231 "%s and %s are the same file", *argv, to_name); 232 } 233 install(*argv, to_name, fset, iflags); 234 exit(EX_OK); 235 /* NOTREACHED */ 236 } 237 238 u_long 239 numeric_id(const char *name, const char *type) 240 { 241 u_long val; 242 char *ep; 243 244 /* 245 * XXX 246 * We know that uid_t's and gid_t's are unsigned longs. 247 */ 248 errno = 0; 249 val = strtoul(name, &ep, 10); 250 if (errno) 251 err(EX_NOUSER, "%s", name); 252 if (*ep != '\0') 253 errx(EX_NOUSER, "unknown %s %s", type, name); 254 return (val); 255 } 256 257 /* 258 * install -- 259 * build a path name and install the file 260 */ 261 void 262 install(const char *from_name, const char *to_name, u_long fset, u_int flags) 263 { 264 struct stat from_sb, temp_sb, to_sb; 265 struct utimbuf utb; 266 int devnull, files_match, from_fd, serrno, target; 267 int tempcopy, temp_fd, to_fd; 268 char backup[MAXPATHLEN], *p, pathbuf[MAXPATHLEN], tempfile[MAXPATHLEN]; 269 270 files_match = 0; 271 272 /* If try to install NULL file to a directory, fails. */ 273 if (flags & DIRECTORY || strcmp(from_name, _PATH_DEVNULL)) { 274 if (stat(from_name, &from_sb)) 275 err(EX_OSERR, "%s", from_name); 276 if (!S_ISREG(from_sb.st_mode)) { 277 errno = EFTYPE; 278 err(EX_OSERR, "%s", from_name); 279 } 280 /* Build the target path. */ 281 if (flags & DIRECTORY) { 282 (void)snprintf(pathbuf, sizeof(pathbuf), "%s/%s", 283 to_name, 284 (p = strrchr(from_name, '/')) ? ++p : from_name); 285 to_name = pathbuf; 286 } 287 devnull = 0; 288 } else { 289 devnull = 1; 290 } 291 292 target = stat(to_name, &to_sb) == 0; 293 294 /* Only install to regular files. */ 295 if (target && !S_ISREG(to_sb.st_mode)) { 296 errno = EFTYPE; 297 warn("%s", to_name); 298 return; 299 } 300 301 /* Only copy safe if the target exists. */ 302 tempcopy = safecopy && target; 303 304 if (!devnull && (from_fd = open(from_name, O_RDONLY, 0)) < 0) 305 err(EX_OSERR, "%s", from_name); 306 307 /* If we don't strip, we can compare first. */ 308 if (docompare && !dostrip && target) { 309 if ((to_fd = open(to_name, O_RDONLY, 0)) < 0) 310 err(EX_OSERR, "%s", to_name); 311 if (devnull) 312 files_match = to_sb.st_size == 0; 313 else 314 files_match = !(compare(from_fd, from_name, 315 (size_t)from_sb.st_size, to_fd, 316 to_name, (size_t)to_sb.st_size)); 317 318 /* Close "to" file unless we match. */ 319 if (!files_match) 320 (void)close(to_fd); 321 } 322 323 if (!files_match) { 324 if (tempcopy) { 325 to_fd = create_tempfile(to_name, tempfile, 326 sizeof(tempfile)); 327 if (to_fd < 0) 328 err(EX_OSERR, "%s", tempfile); 329 } else { 330 if ((to_fd = create_newfile(to_name, target, 331 &to_sb)) < 0) 332 err(EX_OSERR, "%s", to_name); 333 if (verbose) 334 (void)printf("install: %s -> %s\n", 335 from_name, to_name); 336 } 337 if (!devnull) 338 copy(from_fd, from_name, to_fd, 339 tempcopy ? tempfile : to_name, from_sb.st_size); 340 } 341 342 if (dostrip) { 343 strip(tempcopy ? tempfile : to_name); 344 345 /* 346 * Re-open our fd on the target, in case we used a strip 347 * that does not work in-place -- like GNU binutils strip. 348 */ 349 close(to_fd); 350 to_fd = open(tempcopy ? tempfile : to_name, O_RDONLY, 0); 351 if (to_fd < 0) 352 err(EX_OSERR, "stripping %s", to_name); 353 } 354 355 /* 356 * Compare the stripped temp file with the target. 357 */ 358 if (docompare && dostrip && target) { 359 temp_fd = to_fd; 360 361 /* Re-open to_fd using the real target name. */ 362 if ((to_fd = open(to_name, O_RDONLY, 0)) < 0) 363 err(EX_OSERR, "%s", to_name); 364 365 if (fstat(temp_fd, &temp_sb)) { 366 serrno = errno; 367 (void)unlink(tempfile); 368 errno = serrno; 369 err(EX_OSERR, "%s", tempfile); 370 } 371 372 if (compare(temp_fd, tempfile, (size_t)temp_sb.st_size, to_fd, 373 to_name, (size_t)to_sb.st_size) == 0) { 374 /* 375 * If target has more than one link we need to 376 * replace it in order to snap the extra links. 377 * Need to preserve target file times, though. 378 */ 379 if (to_sb.st_nlink != 1) { 380 utb.actime = to_sb.st_atime; 381 utb.modtime = to_sb.st_mtime; 382 (void)utime(tempfile, &utb); 383 } else { 384 files_match = 1; 385 (void)unlink(tempfile); 386 } 387 (void) close(temp_fd); 388 } 389 } 390 391 /* 392 * Move the new file into place if doing a safe copy 393 * and the files are different (or just not compared). 394 */ 395 if (tempcopy && !files_match) { 396 /* Try to turn off the immutable bits. */ 397 if (to_sb.st_flags & NOCHANGEBITS) 398 (void)chflags(to_name, to_sb.st_flags & ~NOCHANGEBITS); 399 if (dobackup) { 400 if ((size_t)snprintf(backup, MAXPATHLEN, "%s%s", to_name, 401 suffix) != strlen(to_name) + strlen(suffix)) { 402 unlink(tempfile); 403 errx(EX_OSERR, "%s: backup filename too long", 404 to_name); 405 } 406 if (verbose) 407 (void)printf("install: %s -> %s\n", to_name, backup); 408 if (rename(to_name, backup) < 0) { 409 serrno = errno; 410 unlink(tempfile); 411 errno = serrno; 412 err(EX_OSERR, "rename: %s to %s", to_name, 413 backup); 414 } 415 } 416 if (verbose) 417 (void)printf("install: %s -> %s\n", from_name, to_name); 418 if (rename(tempfile, to_name) < 0) { 419 serrno = errno; 420 unlink(tempfile); 421 errno = serrno; 422 err(EX_OSERR, "rename: %s to %s", 423 tempfile, to_name); 424 } 425 426 /* Re-open to_fd so we aren't hosed by the rename(2). */ 427 (void) close(to_fd); 428 if ((to_fd = open(to_name, O_RDONLY, 0)) < 0) 429 err(EX_OSERR, "%s", to_name); 430 } 431 432 /* 433 * Preserve the timestamp of the source file if necessary. 434 */ 435 if (dopreserve && !files_match && !devnull) { 436 utb.actime = from_sb.st_atime; 437 utb.modtime = from_sb.st_mtime; 438 (void)utime(to_name, &utb); 439 } 440 441 if (fstat(to_fd, &to_sb) == -1) { 442 serrno = errno; 443 (void)unlink(to_name); 444 errno = serrno; 445 err(EX_OSERR, "%s", to_name); 446 } 447 448 /* 449 * Set owner, group, mode for target; do the chown first, 450 * chown may lose the setuid bits. 451 */ 452 if ((gid != (gid_t)-1 && gid != to_sb.st_gid) || 453 (uid != (uid_t)-1 && uid != to_sb.st_uid) || 454 (mode != (to_sb.st_mode & ALLPERMS))) { 455 /* Try to turn off the immutable bits. */ 456 if (to_sb.st_flags & NOCHANGEBITS) 457 (void)fchflags(to_fd, to_sb.st_flags & ~NOCHANGEBITS); 458 } 459 460 if ((gid != (gid_t)-1 && gid != to_sb.st_gid) || 461 (uid != (uid_t)-1 && uid != to_sb.st_uid)) 462 if (fchown(to_fd, uid, gid) == -1) { 463 serrno = errno; 464 (void)unlink(to_name); 465 errno = serrno; 466 err(EX_OSERR,"%s: chown/chgrp", to_name); 467 } 468 469 if (mode != (to_sb.st_mode & ALLPERMS)) 470 if (fchmod(to_fd, mode)) { 471 serrno = errno; 472 (void)unlink(to_name); 473 errno = serrno; 474 err(EX_OSERR, "%s: chmod", to_name); 475 } 476 477 /* 478 * If provided a set of flags, set them, otherwise, preserve the 479 * flags, except for the dump flag. 480 * NFS does not support flags. Ignore EOPNOTSUPP flags if we're just 481 * trying to turn off UF_NODUMP. If we're trying to set real flags, 482 * then warn if the the fs doesn't support it, otherwise fail. 483 */ 484 if (!devnull && (flags & SETFLAGS || 485 (from_sb.st_flags & ~UF_NODUMP) != to_sb.st_flags) && 486 fchflags(to_fd, 487 flags & SETFLAGS ? fset : from_sb.st_flags & ~UF_NODUMP)) { 488 if (flags & SETFLAGS) { 489 if (errno == EOPNOTSUPP) 490 warn("%s: chflags", to_name); 491 else { 492 serrno = errno; 493 (void)unlink(to_name); 494 errno = serrno; 495 err(EX_OSERR, "%s: chflags", to_name); 496 } 497 } 498 } 499 500 (void)close(to_fd); 501 if (!devnull) 502 (void)close(from_fd); 503 } 504 505 /* 506 * compare -- 507 * compare two files; non-zero means files differ 508 */ 509 int 510 compare(int from_fd, const char *from_name __unused, size_t from_len, 511 int to_fd, const char *to_name __unused, size_t to_len) 512 { 513 char *p, *q; 514 int rv; 515 int done_compare; 516 517 rv = 0; 518 if (from_len != to_len) 519 return 1; 520 521 if (from_len <= MAX_CMP_SIZE) { 522 done_compare = 0; 523 if (trymmap(from_fd) && trymmap(to_fd)) { 524 p = mmap(NULL, from_len, PROT_READ, MAP_SHARED, from_fd, (off_t)0); 525 if (p == (char *)MAP_FAILED) 526 goto out; 527 q = mmap(NULL, from_len, PROT_READ, MAP_SHARED, to_fd, (off_t)0); 528 if (q == (char *)MAP_FAILED) { 529 munmap(p, from_len); 530 goto out; 531 } 532 533 rv = memcmp(p, q, from_len); 534 munmap(p, from_len); 535 munmap(q, from_len); 536 done_compare = 1; 537 } 538 out: 539 if (!done_compare) { 540 char buf1[MAXBSIZE]; 541 char buf2[MAXBSIZE]; 542 int n1, n2; 543 544 rv = 0; 545 lseek(from_fd, 0, SEEK_SET); 546 lseek(to_fd, 0, SEEK_SET); 547 while (rv == 0) { 548 n1 = read(from_fd, buf1, sizeof(buf1)); 549 if (n1 == 0) 550 break; /* EOF */ 551 else if (n1 > 0) { 552 n2 = read(to_fd, buf2, n1); 553 if (n2 == n1) 554 rv = memcmp(buf1, buf2, n1); 555 else 556 rv = 1; /* out of sync */ 557 } else 558 rv = 1; /* read failure */ 559 } 560 lseek(from_fd, 0, SEEK_SET); 561 lseek(to_fd, 0, SEEK_SET); 562 } 563 } else 564 rv = 1; /* don't bother in this case */ 565 566 return rv; 567 } 568 569 /* 570 * create_tempfile -- 571 * create a temporary file based on path and open it 572 */ 573 int 574 create_tempfile(const char *path, char *temp, size_t tsize) 575 { 576 char *p; 577 578 (void)strncpy(temp, path, tsize); 579 temp[tsize - 1] = '\0'; 580 if ((p = strrchr(temp, '/')) != NULL) 581 p++; 582 else 583 p = temp; 584 (void)strncpy(p, "INS@XXXX", &temp[tsize - 1] - p); 585 temp[tsize - 1] = '\0'; 586 return (mkstemp(temp)); 587 } 588 589 /* 590 * create_newfile -- 591 * create a new file, overwriting an existing one if necessary 592 */ 593 int 594 create_newfile(const char *path, int target, struct stat *sbp) 595 { 596 char backup[MAXPATHLEN]; 597 598 if (target) { 599 /* 600 * Unlink now... avoid ETXTBSY errors later. Try to turn 601 * off the append/immutable bits -- if we fail, go ahead, 602 * it might work. 603 */ 604 if (sbp->st_flags & NOCHANGEBITS) 605 (void)chflags(path, sbp->st_flags & ~NOCHANGEBITS); 606 607 if (dobackup) { 608 if ((size_t)snprintf(backup, MAXPATHLEN, "%s%s", 609 path, suffix) != strlen(path) + strlen(suffix)) 610 errx(EX_OSERR, "%s: backup filename too long", 611 path); 612 (void)snprintf(backup, MAXPATHLEN, "%s%s", 613 path, suffix); 614 if (verbose) 615 (void)printf("install: %s -> %s\n", 616 path, backup); 617 if (rename(path, backup) < 0) 618 err(EX_OSERR, "rename: %s to %s", path, backup); 619 } else 620 (void)unlink(path); 621 } 622 623 return (open(path, O_CREAT | O_RDWR | O_TRUNC, S_IRUSR | S_IWUSR)); 624 } 625 626 /* 627 * copy -- 628 * copy from one file to another 629 */ 630 void 631 copy(int from_fd, const char *from_name, int to_fd, const char *to_name, 632 off_t size) 633 { 634 int nr, nw; 635 int serrno; 636 char *p, buf[MAXBSIZE]; 637 int done_copy; 638 639 /* Rewind file descriptors. */ 640 if (lseek(from_fd, (off_t)0, SEEK_SET) == (off_t)-1) 641 err(EX_OSERR, "lseek: %s", from_name); 642 if (lseek(to_fd, (off_t)0, SEEK_SET) == (off_t)-1) 643 err(EX_OSERR, "lseek: %s", to_name); 644 645 /* 646 * Mmap and write if less than 8M (the limit is so we don't totally 647 * trash memory on big files. This is really a minor hack, but it 648 * wins some CPU back. 649 */ 650 done_copy = 0; 651 if (size <= 8 * 1048576 && trymmap(from_fd) && 652 (p = mmap(NULL, (size_t)size, PROT_READ, MAP_SHARED, 653 from_fd, (off_t)0)) != (char *)MAP_FAILED) { 654 if ((nw = write(to_fd, p, size)) != size) { 655 serrno = errno; 656 (void)unlink(to_name); 657 errno = nw > 0 ? EIO : serrno; 658 err(EX_OSERR, "%s", to_name); 659 } 660 done_copy = 1; 661 } 662 if (!done_copy) { 663 while ((nr = read(from_fd, buf, sizeof(buf))) > 0) 664 if ((nw = write(to_fd, buf, nr)) != nr) { 665 serrno = errno; 666 (void)unlink(to_name); 667 errno = nw > 0 ? EIO : serrno; 668 err(EX_OSERR, "%s", to_name); 669 } 670 if (nr != 0) { 671 serrno = errno; 672 (void)unlink(to_name); 673 errno = serrno; 674 err(EX_OSERR, "%s", from_name); 675 } 676 } 677 } 678 679 /* 680 * strip -- 681 * use strip(1) to strip the target file 682 */ 683 void 684 strip(const char *to_name) 685 { 686 const char *stripbin; 687 int serrno, status; 688 689 switch (fork()) { 690 case -1: 691 serrno = errno; 692 (void)unlink(to_name); 693 errno = serrno; 694 err(EX_TEMPFAIL, "fork"); 695 case 0: 696 stripbin = getenv("STRIPBIN"); 697 if (stripbin == NULL) 698 stripbin = "strip"; 699 execlp(stripbin, stripbin, to_name, (char *)NULL); 700 err(EX_OSERR, "exec(%s)", stripbin); 701 default: 702 if (wait(&status) == -1 || status) { 703 serrno = errno; 704 (void)unlink(to_name); 705 errc(EX_SOFTWARE, serrno, "wait"); 706 /* NOTREACHED */ 707 } 708 } 709 } 710 711 /* 712 * install_dir -- 713 * build directory heirarchy 714 */ 715 void 716 install_dir(char *path) 717 { 718 char *p; 719 struct stat sb; 720 int ch; 721 722 for (p = path;; ++p) 723 if (!*p || (p != path && *p == '/')) { 724 ch = *p; 725 *p = '\0'; 726 if (stat(path, &sb)) { 727 if (errno != ENOENT || mkdir(path, 0755) < 0) { 728 err(EX_OSERR, "mkdir %s", path); 729 /* NOTREACHED */ 730 } else if (verbose) 731 (void)printf("install: mkdir %s\n", 732 path); 733 } else if (!S_ISDIR(sb.st_mode)) 734 errx(EX_OSERR, "%s exists but is not a directory", path); 735 if (!(*p = ch)) 736 break; 737 } 738 739 if ((gid != (gid_t)-1 || uid != (uid_t)-1) && chown(path, uid, gid)) 740 warn("chown %u:%u %s", uid, gid, path); 741 if (chmod(path, mode)) 742 warn("chmod %o %s", mode, path); 743 } 744 745 /* 746 * usage -- 747 * print a usage message and die 748 */ 749 void 750 usage(void) 751 { 752 (void)fprintf(stderr, "\ 753 usage: install [-bCcpSsv] [-B suffix] [-f flags] [-g group] [-m mode]\n\ 754 [-o owner] file1 file2\n\ 755 install [-bCcpSsv] [-B suffix] [-f flags] [-g group] [-m mode]\n\ 756 [-o owner] file1 ... fileN directory\n\ 757 install -d [-v] [-g group] [-m mode] [-o owner] directory ...\n"); 758 exit(EX_USAGE); 759 /* NOTREACHED */ 760 } 761 762 /* 763 * trymmap -- 764 * return true (1) if mmap should be tried, false (0) if not. 765 */ 766 int 767 trymmap(int fd) 768 { 769 /* 770 * The ifdef is for bootstrapping - f_fstypename doesn't exist in 771 * pre-Lite2-merge systems. 772 */ 773 #ifdef MFSNAMELEN 774 struct statfs stfs; 775 776 if (nommap || fstatfs(fd, &stfs) != 0) 777 return (0); 778 if (strcmp(stfs.f_fstypename, "ufs") == 0 || 779 strcmp(stfs.f_fstypename, "cd9660") == 0) 780 return (1); 781 #endif 782 return (0); 783 } 784