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(argc, argv) 104 int argc; 105 char *argv[]; 106 { 107 struct stat from_sb, to_sb; 108 mode_t *set; 109 u_long fset; 110 int ch, no_target; 111 u_int iflags; 112 char *flags; 113 const char *group, *owner, *to_name; 114 115 iflags = 0; 116 group = owner = NULL; 117 while ((ch = getopt(argc, argv, "B:bCcdf:g:Mm:o:pSsv")) != -1) 118 switch((char)ch) { 119 case 'B': 120 suffix = optarg; 121 /* FALLTHROUGH */ 122 case 'b': 123 dobackup = 1; 124 break; 125 case 'C': 126 docompare = 1; 127 break; 128 case 'c': 129 /* For backwards compatibility. */ 130 break; 131 case 'd': 132 dodir = 1; 133 break; 134 case 'f': 135 flags = optarg; 136 if (strtofflags(&flags, &fset, NULL)) 137 errx(EX_USAGE, "%s: invalid flag", flags); 138 iflags |= SETFLAGS; 139 break; 140 case 'g': 141 group = optarg; 142 break; 143 case 'M': 144 nommap = 1; 145 break; 146 case 'm': 147 if (!(set = setmode(optarg))) 148 errx(EX_USAGE, "invalid file mode: %s", 149 optarg); 150 mode = getmode(set, 0); 151 free(set); 152 break; 153 case 'o': 154 owner = optarg; 155 break; 156 case 'p': 157 docompare = dopreserve = 1; 158 break; 159 case 'S': 160 safecopy = 1; 161 break; 162 case 's': 163 dostrip = 1; 164 break; 165 case 'v': 166 verbose = 1; 167 break; 168 case '?': 169 default: 170 usage(); 171 } 172 argc -= optind; 173 argv += optind; 174 175 /* some options make no sense when creating directories */ 176 if ((safecopy || docompare || dostrip) && dodir) 177 usage(); 178 179 /* must have at least two arguments, except when creating directories */ 180 if (argc < 2 && !dodir) 181 usage(); 182 183 /* need to make a temp copy so we can compare stripped version */ 184 if (docompare && dostrip) 185 safecopy = 1; 186 187 /* get group and owner id's */ 188 if (group != NULL) { 189 if ((gp = getgrnam(group)) != NULL) 190 gid = gp->gr_gid; 191 else 192 gid = (gid_t)numeric_id(group, "group"); 193 } else 194 gid = (gid_t)-1; 195 196 if (owner != NULL) { 197 if ((pp = getpwnam(owner)) != NULL) 198 uid = pp->pw_uid; 199 else 200 uid = (uid_t)numeric_id(owner, "user"); 201 } else 202 uid = (uid_t)-1; 203 204 if (dodir) { 205 for (; *argv != NULL; ++argv) 206 install_dir(*argv); 207 exit(EX_OK); 208 /* NOTREACHED */ 209 } 210 211 no_target = stat(to_name = argv[argc - 1], &to_sb); 212 if (!no_target && S_ISDIR(to_sb.st_mode)) { 213 for (; *argv != to_name; ++argv) 214 install(*argv, to_name, fset, iflags | DIRECTORY); 215 exit(EX_OK); 216 /* NOTREACHED */ 217 } 218 219 /* can't do file1 file2 directory/file */ 220 if (argc != 2) 221 usage(); 222 223 if (!no_target) { 224 if (stat(*argv, &from_sb)) 225 err(EX_OSERR, "%s", *argv); 226 if (!S_ISREG(to_sb.st_mode)) { 227 errno = EFTYPE; 228 err(EX_OSERR, "%s", to_name); 229 } 230 if (to_sb.st_dev == from_sb.st_dev && 231 to_sb.st_ino == from_sb.st_ino) 232 errx(EX_USAGE, 233 "%s and %s are the same file", *argv, to_name); 234 } 235 install(*argv, to_name, fset, iflags); 236 exit(EX_OK); 237 /* NOTREACHED */ 238 } 239 240 u_long 241 numeric_id(name, type) 242 const char *name, *type; 243 { 244 u_long val; 245 char *ep; 246 247 /* 248 * XXX 249 * We know that uid_t's and gid_t's are unsigned longs. 250 */ 251 errno = 0; 252 val = strtoul(name, &ep, 10); 253 if (errno) 254 err(EX_NOUSER, "%s", name); 255 if (*ep != '\0') 256 errx(EX_NOUSER, "unknown %s %s", type, name); 257 return (val); 258 } 259 260 /* 261 * install -- 262 * build a path name and install the file 263 */ 264 void 265 install(from_name, to_name, fset, flags) 266 const char *from_name, *to_name; 267 u_long fset; 268 u_int flags; 269 { 270 struct stat from_sb, temp_sb, to_sb; 271 struct utimbuf utb; 272 int devnull, files_match, from_fd, serrno, target; 273 int tempcopy, temp_fd, to_fd; 274 char backup[MAXPATHLEN], *p, pathbuf[MAXPATHLEN], tempfile[MAXPATHLEN]; 275 276 files_match = 0; 277 278 /* If try to install NULL file to a directory, fails. */ 279 if (flags & DIRECTORY || strcmp(from_name, _PATH_DEVNULL)) { 280 if (stat(from_name, &from_sb)) 281 err(EX_OSERR, "%s", from_name); 282 if (!S_ISREG(from_sb.st_mode)) { 283 errno = EFTYPE; 284 err(EX_OSERR, "%s", from_name); 285 } 286 /* Build the target path. */ 287 if (flags & DIRECTORY) { 288 (void)snprintf(pathbuf, sizeof(pathbuf), "%s/%s", 289 to_name, 290 (p = strrchr(from_name, '/')) ? ++p : from_name); 291 to_name = pathbuf; 292 } 293 devnull = 0; 294 } else { 295 devnull = 1; 296 } 297 298 target = stat(to_name, &to_sb) == 0; 299 300 /* Only install to regular files. */ 301 if (target && !S_ISREG(to_sb.st_mode)) { 302 errno = EFTYPE; 303 warn("%s", to_name); 304 return; 305 } 306 307 /* Only copy safe if the target exists. */ 308 tempcopy = safecopy && target; 309 310 if (!devnull && (from_fd = open(from_name, O_RDONLY, 0)) < 0) 311 err(EX_OSERR, "%s", from_name); 312 313 /* If we don't strip, we can compare first. */ 314 if (docompare && !dostrip && target) { 315 if ((to_fd = open(to_name, O_RDONLY, 0)) < 0) 316 err(EX_OSERR, "%s", to_name); 317 if (devnull) 318 files_match = to_sb.st_size == 0; 319 else 320 files_match = !(compare(from_fd, from_name, 321 (size_t)from_sb.st_size, to_fd, 322 to_name, (size_t)to_sb.st_size)); 323 324 /* Close "to" file unless we match. */ 325 if (!files_match) 326 (void)close(to_fd); 327 } 328 329 if (!files_match) { 330 if (tempcopy) { 331 to_fd = create_tempfile(to_name, tempfile, 332 sizeof(tempfile)); 333 if (to_fd < 0) 334 err(EX_OSERR, "%s", tempfile); 335 } else { 336 if ((to_fd = create_newfile(to_name, target, 337 &to_sb)) < 0) 338 err(EX_OSERR, "%s", to_name); 339 if (verbose) 340 (void)printf("install: %s -> %s\n", 341 from_name, to_name); 342 } 343 if (!devnull) 344 copy(from_fd, from_name, to_fd, 345 tempcopy ? tempfile : to_name, from_sb.st_size); 346 } 347 348 if (dostrip) { 349 strip(tempcopy ? tempfile : to_name); 350 351 /* 352 * Re-open our fd on the target, in case we used a strip 353 * that does not work in-place -- like GNU binutils strip. 354 */ 355 close(to_fd); 356 to_fd = open(tempcopy ? tempfile : to_name, O_RDONLY, 0); 357 if (to_fd < 0) 358 err(EX_OSERR, "stripping %s", to_name); 359 } 360 361 /* 362 * Compare the stripped temp file with the target. 363 */ 364 if (docompare && dostrip && target) { 365 temp_fd = to_fd; 366 367 /* Re-open to_fd using the real target name. */ 368 if ((to_fd = open(to_name, O_RDONLY, 0)) < 0) 369 err(EX_OSERR, "%s", to_name); 370 371 if (fstat(temp_fd, &temp_sb)) { 372 serrno = errno; 373 (void)unlink(tempfile); 374 errno = serrno; 375 err(EX_OSERR, "%s", tempfile); 376 } 377 378 if (compare(temp_fd, tempfile, (size_t)temp_sb.st_size, to_fd, 379 to_name, (size_t)to_sb.st_size) == 0) { 380 /* 381 * If target has more than one link we need to 382 * replace it in order to snap the extra links. 383 * Need to preserve target file times, though. 384 */ 385 if (to_sb.st_nlink != 1) { 386 utb.actime = to_sb.st_atime; 387 utb.modtime = to_sb.st_mtime; 388 (void)utime(tempfile, &utb); 389 } else { 390 files_match = 1; 391 (void)unlink(tempfile); 392 } 393 (void) close(temp_fd); 394 } 395 } 396 397 /* 398 * Move the new file into place if doing a safe copy 399 * and the files are different (or just not compared). 400 */ 401 if (tempcopy && !files_match) { 402 /* Try to turn off the immutable bits. */ 403 if (to_sb.st_flags & NOCHANGEBITS) 404 (void)chflags(to_name, to_sb.st_flags & ~NOCHANGEBITS); 405 if (dobackup) { 406 if ((size_t)snprintf(backup, MAXPATHLEN, "%s%s", to_name, 407 suffix) != strlen(to_name) + strlen(suffix)) { 408 unlink(tempfile); 409 errx(EX_OSERR, "%s: backup filename too long", 410 to_name); 411 } 412 if (verbose) 413 (void)printf("install: %s -> %s\n", to_name, backup); 414 if (rename(to_name, backup) < 0) { 415 serrno = errno; 416 unlink(tempfile); 417 errno = serrno; 418 err(EX_OSERR, "rename: %s to %s", to_name, 419 backup); 420 } 421 } 422 if (verbose) 423 (void)printf("install: %s -> %s\n", from_name, to_name); 424 if (rename(tempfile, to_name) < 0) { 425 serrno = errno; 426 unlink(tempfile); 427 errno = serrno; 428 err(EX_OSERR, "rename: %s to %s", 429 tempfile, to_name); 430 } 431 432 /* Re-open to_fd so we aren't hosed by the rename(2). */ 433 (void) close(to_fd); 434 if ((to_fd = open(to_name, O_RDONLY, 0)) < 0) 435 err(EX_OSERR, "%s", to_name); 436 } 437 438 /* 439 * Preserve the timestamp of the source file if necessary. 440 */ 441 if (dopreserve && !files_match && !devnull) { 442 utb.actime = from_sb.st_atime; 443 utb.modtime = from_sb.st_mtime; 444 (void)utime(to_name, &utb); 445 } 446 447 if (fstat(to_fd, &to_sb) == -1) { 448 serrno = errno; 449 (void)unlink(to_name); 450 errno = serrno; 451 err(EX_OSERR, "%s", to_name); 452 } 453 454 /* 455 * Set owner, group, mode for target; do the chown first, 456 * chown may lose the setuid bits. 457 */ 458 if ((gid != (gid_t)-1 && gid != to_sb.st_gid) || 459 (uid != (uid_t)-1 && uid != to_sb.st_uid) || 460 (mode != to_sb.st_mode)) { 461 /* Try to turn off the immutable bits. */ 462 if (to_sb.st_flags & NOCHANGEBITS) 463 (void)fchflags(to_fd, to_sb.st_flags & ~NOCHANGEBITS); 464 } 465 466 if ((gid != (gid_t)-1 && gid != to_sb.st_gid) || 467 (uid != (uid_t)-1 && uid != to_sb.st_uid)) 468 if (fchown(to_fd, uid, gid) == -1) { 469 serrno = errno; 470 (void)unlink(to_name); 471 errno = serrno; 472 err(EX_OSERR,"%s: chown/chgrp", to_name); 473 } 474 475 if (mode != to_sb.st_mode) 476 if (fchmod(to_fd, mode)) { 477 serrno = errno; 478 (void)unlink(to_name); 479 errno = serrno; 480 err(EX_OSERR, "%s: chmod", to_name); 481 } 482 483 /* 484 * If provided a set of flags, set them, otherwise, preserve the 485 * flags, except for the dump flag. 486 * NFS does not support flags. Ignore EOPNOTSUPP flags if we're just 487 * trying to turn off UF_NODUMP. If we're trying to set real flags, 488 * then warn if the the fs doesn't support it, otherwise fail. 489 */ 490 if (!devnull && fchflags(to_fd, 491 flags & SETFLAGS ? fset : from_sb.st_flags & ~UF_NODUMP)) { 492 if (flags & SETFLAGS) { 493 if (errno == EOPNOTSUPP) 494 warn("%s: chflags", to_name); 495 else { 496 serrno = errno; 497 (void)unlink(to_name); 498 errno = serrno; 499 err(EX_OSERR, "%s: chflags", to_name); 500 } 501 } 502 } 503 504 (void)close(to_fd); 505 if (!devnull) 506 (void)close(from_fd); 507 } 508 509 /* 510 * compare -- 511 * compare two files; non-zero means files differ 512 */ 513 int 514 compare(int from_fd, const char *from_name __unused, size_t from_len, 515 int to_fd, const char *to_name __unused, size_t to_len) 516 { 517 char *p, *q; 518 int rv; 519 int done_compare; 520 521 rv = 0; 522 if (from_len != to_len) 523 return 1; 524 525 if (from_len <= MAX_CMP_SIZE) { 526 done_compare = 0; 527 if (trymmap(from_fd) && trymmap(to_fd)) { 528 p = mmap(NULL, from_len, PROT_READ, MAP_SHARED, from_fd, (off_t)0); 529 if (p == (char *)MAP_FAILED) 530 goto out; 531 q = mmap(NULL, from_len, PROT_READ, MAP_SHARED, to_fd, (off_t)0); 532 if (q == (char *)MAP_FAILED) { 533 munmap(p, from_len); 534 goto out; 535 } 536 537 rv = memcmp(p, q, from_len); 538 munmap(p, from_len); 539 munmap(q, from_len); 540 done_compare = 1; 541 } 542 out: 543 if (!done_compare) { 544 char buf1[MAXBSIZE]; 545 char buf2[MAXBSIZE]; 546 int n1, n2; 547 548 rv = 0; 549 lseek(from_fd, 0, SEEK_SET); 550 lseek(to_fd, 0, SEEK_SET); 551 while (rv == 0) { 552 n1 = read(from_fd, buf1, sizeof(buf1)); 553 if (n1 == 0) 554 break; /* EOF */ 555 else if (n1 > 0) { 556 n2 = read(to_fd, buf2, n1); 557 if (n2 == n1) 558 rv = memcmp(buf1, buf2, n1); 559 else 560 rv = 1; /* out of sync */ 561 } else 562 rv = 1; /* read failure */ 563 } 564 lseek(from_fd, 0, SEEK_SET); 565 lseek(to_fd, 0, SEEK_SET); 566 } 567 } else 568 rv = 1; /* don't bother in this case */ 569 570 return rv; 571 } 572 573 /* 574 * create_tempfile -- 575 * create a temporary file based on path and open it 576 */ 577 int 578 create_tempfile(path, temp, tsize) 579 const char *path; 580 char *temp; 581 size_t tsize; 582 { 583 char *p; 584 585 (void)strncpy(temp, path, tsize); 586 temp[tsize - 1] = '\0'; 587 if ((p = strrchr(temp, '/')) != NULL) 588 p++; 589 else 590 p = temp; 591 (void)strncpy(p, "INS@XXXX", &temp[tsize - 1] - p); 592 temp[tsize - 1] = '\0'; 593 return (mkstemp(temp)); 594 } 595 596 /* 597 * create_newfile -- 598 * create a new file, overwriting an existing one if necessary 599 */ 600 int 601 create_newfile(path, target, sbp) 602 const char *path; 603 int target; 604 struct stat *sbp; 605 { 606 char backup[MAXPATHLEN]; 607 608 if (target) { 609 /* 610 * Unlink now... avoid ETXTBSY errors later. Try to turn 611 * off the append/immutable bits -- if we fail, go ahead, 612 * it might work. 613 */ 614 if (sbp->st_flags & NOCHANGEBITS) 615 (void)chflags(path, sbp->st_flags & ~NOCHANGEBITS); 616 617 if (dobackup) { 618 if ((size_t)snprintf(backup, MAXPATHLEN, "%s%s", 619 path, suffix) != strlen(path) + strlen(suffix)) 620 errx(EX_OSERR, "%s: backup filename too long", 621 path); 622 (void)snprintf(backup, MAXPATHLEN, "%s%s", 623 path, suffix); 624 if (verbose) 625 (void)printf("install: %s -> %s\n", 626 path, backup); 627 if (rename(path, backup) < 0) 628 err(EX_OSERR, "rename: %s to %s", path, backup); 629 } else 630 (void)unlink(path); 631 } 632 633 return (open(path, O_CREAT | O_RDWR | O_TRUNC, S_IRUSR | S_IWUSR)); 634 } 635 636 /* 637 * copy -- 638 * copy from one file to another 639 */ 640 void 641 copy(from_fd, from_name, to_fd, to_name, size) 642 register int from_fd, to_fd; 643 const char *from_name, *to_name; 644 off_t size; 645 { 646 register int nr, nw; 647 int serrno; 648 char *p, buf[MAXBSIZE]; 649 int done_copy; 650 651 /* Rewind file descriptors. */ 652 if (lseek(from_fd, (off_t)0, SEEK_SET) == (off_t)-1) 653 err(EX_OSERR, "lseek: %s", from_name); 654 if (lseek(to_fd, (off_t)0, SEEK_SET) == (off_t)-1) 655 err(EX_OSERR, "lseek: %s", to_name); 656 657 /* 658 * Mmap and write if less than 8M (the limit is so we don't totally 659 * trash memory on big files. This is really a minor hack, but it 660 * wins some CPU back. 661 */ 662 done_copy = 0; 663 if (size <= 8 * 1048576 && trymmap(from_fd) && 664 (p = mmap(NULL, (size_t)size, PROT_READ, MAP_SHARED, 665 from_fd, (off_t)0)) != (char *)MAP_FAILED) { 666 if ((nw = write(to_fd, p, size)) != size) { 667 serrno = errno; 668 (void)unlink(to_name); 669 errno = nw > 0 ? EIO : serrno; 670 err(EX_OSERR, "%s", to_name); 671 } 672 done_copy = 1; 673 } 674 if (!done_copy) { 675 while ((nr = read(from_fd, buf, sizeof(buf))) > 0) 676 if ((nw = write(to_fd, buf, nr)) != nr) { 677 serrno = errno; 678 (void)unlink(to_name); 679 errno = nw > 0 ? EIO : serrno; 680 err(EX_OSERR, "%s", to_name); 681 } 682 if (nr != 0) { 683 serrno = errno; 684 (void)unlink(to_name); 685 errno = serrno; 686 err(EX_OSERR, "%s", from_name); 687 } 688 } 689 } 690 691 /* 692 * strip -- 693 * use strip(1) to strip the target file 694 */ 695 void 696 strip(to_name) 697 const char *to_name; 698 { 699 const char *stripbin; 700 int serrno, status; 701 702 switch (fork()) { 703 case -1: 704 serrno = errno; 705 (void)unlink(to_name); 706 errno = serrno; 707 err(EX_TEMPFAIL, "fork"); 708 case 0: 709 stripbin = getenv("STRIPBIN"); 710 if (stripbin == NULL) 711 stripbin = "strip"; 712 execlp(stripbin, stripbin, to_name, (char *)NULL); 713 err(EX_OSERR, "exec(%s)", stripbin); 714 default: 715 if (wait(&status) == -1 || status) { 716 serrno = errno; 717 (void)unlink(to_name); 718 errc(EX_SOFTWARE, serrno, "wait"); 719 /* NOTREACHED */ 720 } 721 } 722 } 723 724 /* 725 * install_dir -- 726 * build directory heirarchy 727 */ 728 void 729 install_dir(path) 730 char *path; 731 { 732 register char *p; 733 struct stat sb; 734 int ch; 735 736 for (p = path;; ++p) 737 if (!*p || (p != path && *p == '/')) { 738 ch = *p; 739 *p = '\0'; 740 if (stat(path, &sb)) { 741 if (errno != ENOENT || mkdir(path, 0755) < 0) { 742 err(EX_OSERR, "mkdir %s", path); 743 /* NOTREACHED */ 744 } else if (verbose) 745 (void)printf("install: mkdir %s\n", 746 path); 747 } else if (!S_ISDIR(sb.st_mode)) 748 errx(EX_OSERR, "%s exists but is not a directory", path); 749 if (!(*p = ch)) 750 break; 751 } 752 753 if ((gid != (gid_t)-1 || uid != (uid_t)-1) && chown(path, uid, gid)) 754 warn("chown %u:%u %s", uid, gid, path); 755 if (chmod(path, mode)) 756 warn("chmod %o %s", mode, path); 757 } 758 759 /* 760 * usage -- 761 * print a usage message and die 762 */ 763 void 764 usage() 765 { 766 (void)fprintf(stderr, "\ 767 usage: install [-bCcpSsv] [-B suffix] [-f flags] [-g group] [-m mode]\n\ 768 [-o owner] file1 file2\n\ 769 install [-bCcpSsv] [-B suffix] [-f flags] [-g group] [-m mode]\n\ 770 [-o owner] file1 ... fileN directory\n\ 771 install -d [-v] [-g group] [-m mode] [-o owner] directory ...\n"); 772 exit(EX_USAGE); 773 /* NOTREACHED */ 774 } 775 776 /* 777 * trymmap -- 778 * return true (1) if mmap should be tried, false (0) if not. 779 */ 780 int 781 trymmap(fd) 782 int fd; 783 { 784 /* 785 * The ifdef is for bootstrapping - f_fstypename doesn't exist in 786 * pre-Lite2-merge systems. 787 */ 788 #ifdef MFSNAMELEN 789 struct statfs stfs; 790 791 if (nommap || fstatfs(fd, &stfs) != 0) 792 return (0); 793 if (strcmp(stfs.f_fstypename, "ufs") == 0 || 794 strcmp(stfs.f_fstypename, "cd9660") == 0) 795 return (1); 796 #endif 797 return (0); 798 } 799