xinstall.c revision 87724
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#include <sys/cdefs.h> 35 36__FBSDID("$FreeBSD: head/usr.bin/xinstall/xinstall.c 87724 2001-12-12 08:49:51Z ru $"); 37 38#ifndef lint 39static const char copyright[] = 40"@(#) Copyright (c) 1987, 1993\n\ 41 The Regents of the University of California. All rights reserved.\n"; 42#endif 43 44#ifndef lint 45static const char sccsid[] = "From: @(#)xinstall.c 8.1 (Berkeley) 7/21/93"; 46#endif 47 48#include <sys/param.h> 49#include <sys/mman.h> 50#include <sys/mount.h> 51#include <sys/stat.h> 52#include <sys/wait.h> 53 54#include <ctype.h> 55#include <err.h> 56#include <errno.h> 57#include <fcntl.h> 58#include <grp.h> 59#include <paths.h> 60#include <pwd.h> 61#include <stdio.h> 62#include <stdlib.h> 63#include <string.h> 64#include <sysexits.h> 65#include <unistd.h> 66#include <utime.h> 67 68#include "pathnames.h" 69 70/* Bootstrap aid - this doesn't exist in most older releases */ 71#ifndef MAP_FAILED 72#define MAP_FAILED ((void *)-1) /* from <sys/mman.h> */ 73#endif 74 75#define DIRECTORY 0x01 /* Tell install it's a directory. */ 76#define SETFLAGS 0x02 /* Tell install to set flags. */ 77#define NOCHANGEBITS (UF_IMMUTABLE | UF_APPEND | SF_IMMUTABLE | SF_APPEND) 78#define BACKUP_SUFFIX ".old" 79 80struct passwd *pp; 81struct group *gp; 82gid_t gid; 83uid_t uid; 84int dobackup, docompare, dodir, dopreserve, dostrip, nommap, safecopy, verbose; 85mode_t mode = S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH; 86const char *suffix = BACKUP_SUFFIX; 87 88void copy __P((int, const char *, int, const char *, off_t)); 89int compare __P((int, const char *, size_t, int, const char *, size_t)); 90int create_newfile __P((const char *, int, struct stat *)); 91int create_tempfile __P((const char *, char *, size_t)); 92void install __P((const char *, const char *, u_long, u_int)); 93void install_dir __P((char *)); 94u_long numeric_id __P((const char *, const char *)); 95void strip __P((const char *)); 96int trymmap __P((int)); 97void usage __P((void)); 98 99int 100main(argc, argv) 101 int argc; 102 char *argv[]; 103{ 104 struct stat from_sb, to_sb; 105 mode_t *set; 106 u_long fset; 107 int ch, no_target; 108 u_int iflags; 109 char *flags; 110 const char *group, *owner, *to_name; 111 112 iflags = 0; 113 group = owner = NULL; 114 while ((ch = getopt(argc, argv, "B:bCcdf:g:Mm:o:pSsv")) != -1) 115 switch((char)ch) { 116 case 'B': 117 suffix = optarg; 118 /* FALLTHROUGH */ 119 case 'b': 120 dobackup = 1; 121 break; 122 case 'C': 123 docompare = 1; 124 break; 125 case 'c': 126 /* For backwards compatibility. */ 127 break; 128 case 'd': 129 dodir = 1; 130 break; 131 case 'f': 132 flags = optarg; 133 if (strtofflags(&flags, &fset, NULL)) 134 errx(EX_USAGE, "%s: invalid flag", flags); 135 iflags |= SETFLAGS; 136 break; 137 case 'g': 138 group = optarg; 139 break; 140 case 'M': 141 nommap = 1; 142 break; 143 case 'm': 144 if (!(set = setmode(optarg))) 145 errx(EX_USAGE, "invalid file mode: %s", 146 optarg); 147 mode = getmode(set, 0); 148 free(set); 149 break; 150 case 'o': 151 owner = optarg; 152 break; 153 case 'p': 154 docompare = dopreserve = 1; 155 break; 156 case 'S': 157 safecopy = 1; 158 break; 159 case 's': 160 dostrip = 1; 161 break; 162 case 'v': 163 verbose = 1; 164 break; 165 case '?': 166 default: 167 usage(); 168 } 169 argc -= optind; 170 argv += optind; 171 172 /* some options make no sense when creating directories */ 173 if ((safecopy || dostrip) && dodir) 174 usage(); 175 176 /* 177 * Older versions allowed -d -C combo. Issue a warning 178 * for now, but turn this into an error before 4.5-RELEASE. 179 */ 180 if (docompare && dodir) 181 warnx("the -d and -C options may not be specified together"); 182 183 /* must have at least two arguments, except when creating directories */ 184 if (argc < 2 && !dodir) 185 usage(); 186 187 /* need to make a temp copy so we can compare stripped version */ 188 if (docompare && dostrip) 189 safecopy = 1; 190 191 /* get group and owner id's */ 192 if (group != NULL) { 193 if ((gp = getgrnam(group)) != NULL) 194 gid = gp->gr_gid; 195 else 196 gid = (gid_t)numeric_id(group, "group"); 197 } else 198 gid = (gid_t)-1; 199 200 if (owner != NULL) { 201 if ((pp = getpwnam(owner)) != NULL) 202 uid = pp->pw_uid; 203 else 204 uid = (uid_t)numeric_id(owner, "user"); 205 } else 206 uid = (uid_t)-1; 207 208 if (dodir) { 209 for (; *argv != NULL; ++argv) 210 install_dir(*argv); 211 exit(EX_OK); 212 /* NOTREACHED */ 213 } 214 215 no_target = stat(to_name = argv[argc - 1], &to_sb); 216 if (!no_target && S_ISDIR(to_sb.st_mode)) { 217 for (; *argv != to_name; ++argv) 218 install(*argv, to_name, fset, iflags | DIRECTORY); 219 exit(EX_OK); 220 /* NOTREACHED */ 221 } 222 223 /* can't do file1 file2 directory/file */ 224 if (argc != 2) 225 usage(); 226 227 if (!no_target) { 228 if (stat(*argv, &from_sb)) 229 err(EX_OSERR, "%s", *argv); 230 if (!S_ISREG(to_sb.st_mode)) { 231 errno = EFTYPE; 232 err(EX_OSERR, "%s", to_name); 233 } 234 if (to_sb.st_dev == from_sb.st_dev && 235 to_sb.st_ino == from_sb.st_ino) 236 errx(EX_USAGE, 237 "%s and %s are the same file", *argv, to_name); 238 } 239 install(*argv, to_name, fset, iflags); 240 exit(EX_OK); 241 /* NOTREACHED */ 242} 243 244u_long 245numeric_id(name, type) 246 const char *name, *type; 247{ 248 u_long val; 249 char *ep; 250 251 /* 252 * XXX 253 * We know that uid_t's and gid_t's are unsigned longs. 254 */ 255 errno = 0; 256 val = strtoul(name, &ep, 10); 257 if (errno) 258 err(EX_NOUSER, "%s", name); 259 if (*ep != '\0') 260 errx(EX_NOUSER, "unknown %s %s", type, name); 261 return (val); 262} 263 264/* 265 * install -- 266 * build a path name and install the file 267 */ 268void 269install(from_name, to_name, fset, flags) 270 const char *from_name, *to_name; 271 u_long fset; 272 u_int flags; 273{ 274 struct stat from_sb, temp_sb, to_sb; 275 struct utimbuf utb; 276 int devnull, files_match, from_fd, serrno, target; 277 int tempcopy, temp_fd, to_fd; 278 char backup[MAXPATHLEN], *p, pathbuf[MAXPATHLEN], tempfile[MAXPATHLEN]; 279 280 files_match = 0; 281 282 /* If try to install NULL file to a directory, fails. */ 283 if (flags & DIRECTORY || strcmp(from_name, _PATH_DEVNULL)) { 284 if (stat(from_name, &from_sb)) 285 err(EX_OSERR, "%s", from_name); 286 if (!S_ISREG(from_sb.st_mode)) { 287 errno = EFTYPE; 288 err(EX_OSERR, "%s", from_name); 289 } 290 /* Build the target path. */ 291 if (flags & DIRECTORY) { 292 (void)snprintf(pathbuf, sizeof(pathbuf), "%s/%s", 293 to_name, 294 (p = strrchr(from_name, '/')) ? ++p : from_name); 295 to_name = pathbuf; 296 } 297 devnull = 0; 298 } else { 299 devnull = 1; 300 } 301 302 target = stat(to_name, &to_sb) == 0; 303 304 /* Only install to regular files. */ 305 if (target && !S_ISREG(to_sb.st_mode)) { 306 errno = EFTYPE; 307 warn("%s", to_name); 308 return; 309 } 310 311 /* Only copy safe if the target exists. */ 312 tempcopy = safecopy && target; 313 314 if (!devnull && (from_fd = open(from_name, O_RDONLY, 0)) < 0) 315 err(EX_OSERR, "%s", from_name); 316 317 /* If we don't strip, we can compare first. */ 318 if (docompare && !dostrip && target) { 319 if ((to_fd = open(to_name, O_RDONLY, 0)) < 0) 320 err(EX_OSERR, "%s", to_name); 321 if (devnull) 322 files_match = to_sb.st_size == 0; 323 else 324 files_match = !(compare(from_fd, from_name, 325 (size_t)from_sb.st_size, to_fd, 326 to_name, (size_t)to_sb.st_size)); 327 328 /* Close "to" file unless we match. */ 329 if (!files_match) 330 (void)close(to_fd); 331 } 332 333 if (!files_match) { 334 if (tempcopy) { 335 to_fd = create_tempfile(to_name, tempfile, 336 sizeof(tempfile)); 337 if (to_fd < 0) 338 err(EX_OSERR, "%s", tempfile); 339 } else { 340 if ((to_fd = create_newfile(to_name, target, 341 &to_sb)) < 0) 342 err(EX_OSERR, "%s", to_name); 343 if (verbose) 344 (void)printf("install: %s -> %s\n", 345 from_name, to_name); 346 } 347 if (!devnull) 348 copy(from_fd, from_name, to_fd, 349 tempcopy ? tempfile : to_name, from_sb.st_size); 350 } 351 352 if (dostrip) { 353 strip(tempcopy ? tempfile : to_name); 354 355 /* 356 * Re-open our fd on the target, in case we used a strip 357 * that does not work in-place -- like GNU binutils strip. 358 */ 359 close(to_fd); 360 to_fd = open(tempcopy ? tempfile : to_name, O_RDONLY, 0); 361 if (to_fd < 0) 362 err(EX_OSERR, "stripping %s", to_name); 363 } 364 365 /* 366 * Compare the stripped temp file with the target. 367 */ 368 if (docompare && dostrip && target) { 369 temp_fd = to_fd; 370 371 /* Re-open to_fd using the real target name. */ 372 if ((to_fd = open(to_name, O_RDONLY, 0)) < 0) 373 err(EX_OSERR, "%s", to_name); 374 375 if (fstat(temp_fd, &temp_sb)) { 376 serrno = errno; 377 (void)unlink(tempfile); 378 errno = serrno; 379 err(EX_OSERR, "%s", tempfile); 380 } 381 382 if (compare(temp_fd, tempfile, (size_t)temp_sb.st_size, to_fd, 383 to_name, (size_t)to_sb.st_size) == 0) { 384 /* 385 * If target has more than one link we need to 386 * replace it in order to snap the extra links. 387 * Need to preserve target file times, though. 388 */ 389 if (to_sb.st_nlink != 1) { 390 utb.actime = to_sb.st_atime; 391 utb.modtime = to_sb.st_mtime; 392 (void)utime(tempfile, &utb); 393 } else { 394 files_match = 1; 395 (void)unlink(tempfile); 396 } 397 (void) close(temp_fd); 398 } 399 } 400 401 /* 402 * Move the new file into place if doing a safe copy 403 * and the files are different (or just not compared). 404 */ 405 if (tempcopy && !files_match) { 406 /* Try to turn off the immutable bits. */ 407 if (to_sb.st_flags & NOCHANGEBITS) 408 (void)chflags(to_name, to_sb.st_flags & ~NOCHANGEBITS); 409 if (dobackup) { 410 if ((size_t)snprintf(backup, MAXPATHLEN, "%s%s", to_name, 411 suffix) != strlen(to_name) + strlen(suffix)) { 412 unlink(tempfile); 413 errx(EX_OSERR, "%s: backup filename too long", 414 to_name); 415 } 416 if (verbose) 417 (void)printf("install: %s -> %s\n", to_name, backup); 418 if (rename(to_name, backup) < 0) { 419 serrno = errno; 420 unlink(tempfile); 421 errno = serrno; 422 err(EX_OSERR, "rename: %s to %s", to_name, 423 backup); 424 } 425 } 426 if (verbose) 427 (void)printf("install: %s -> %s\n", from_name, to_name); 428 if (rename(tempfile, to_name) < 0) { 429 serrno = errno; 430 unlink(tempfile); 431 errno = serrno; 432 err(EX_OSERR, "rename: %s to %s", 433 tempfile, to_name); 434 } 435 436 /* Re-open to_fd so we aren't hosed by the rename(2). */ 437 (void) close(to_fd); 438 if ((to_fd = open(to_name, O_RDONLY, 0)) < 0) 439 err(EX_OSERR, "%s", to_name); 440 } 441 442 /* 443 * Preserve the timestamp of the source file if necessary. 444 */ 445 if (dopreserve && !files_match && !devnull) { 446 utb.actime = from_sb.st_atime; 447 utb.modtime = from_sb.st_mtime; 448 (void)utime(to_name, &utb); 449 } 450 451 if (fstat(to_fd, &to_sb) == -1) { 452 serrno = errno; 453 (void)unlink(to_name); 454 errno = serrno; 455 err(EX_OSERR, "%s", to_name); 456 } 457 458 /* 459 * Set owner, group, mode for target; do the chown first, 460 * chown may lose the setuid bits. 461 */ 462 if ((gid != (gid_t)-1 && gid != to_sb.st_gid) || 463 (uid != (uid_t)-1 && uid != to_sb.st_uid) || 464 (mode != to_sb.st_mode)) { 465 /* Try to turn off the immutable bits. */ 466 if (to_sb.st_flags & NOCHANGEBITS) 467 (void)fchflags(to_fd, to_sb.st_flags & ~NOCHANGEBITS); 468 } 469 470 if ((gid != (gid_t)-1 && gid != to_sb.st_gid) || 471 (uid != (uid_t)-1 && uid != to_sb.st_uid)) 472 if (fchown(to_fd, uid, gid) == -1) { 473 serrno = errno; 474 (void)unlink(to_name); 475 errno = serrno; 476 err(EX_OSERR,"%s: chown/chgrp", to_name); 477 } 478 479 if (mode != to_sb.st_mode) 480 if (fchmod(to_fd, mode)) { 481 serrno = errno; 482 (void)unlink(to_name); 483 errno = serrno; 484 err(EX_OSERR, "%s: chmod", to_name); 485 } 486 487 /* 488 * If provided a set of flags, set them, otherwise, preserve the 489 * flags, except for the dump flag. 490 * NFS does not support flags. Ignore EOPNOTSUPP flags if we're just 491 * trying to turn off UF_NODUMP. If we're trying to set real flags, 492 * then warn if the the fs doesn't support it, otherwise fail. 493 */ 494 if (!devnull && fchflags(to_fd, 495 flags & SETFLAGS ? fset : from_sb.st_flags & ~UF_NODUMP)) { 496 if (flags & SETFLAGS) { 497 if (errno == EOPNOTSUPP) 498 warn("%s: chflags", to_name); 499 else { 500 serrno = errno; 501 (void)unlink(to_name); 502 errno = serrno; 503 err(EX_OSERR, "%s: chflags", to_name); 504 } 505 } 506 } 507 508 (void)close(to_fd); 509 if (!devnull) 510 (void)close(from_fd); 511} 512 513/* 514 * compare -- 515 * compare two files; non-zero means files differ 516 */ 517int 518compare(int from_fd, const char *from_name __unused, size_t from_len, 519 int to_fd, const char *to_name __unused, size_t to_len) 520{ 521 char *p, *q; 522 int rv; 523 int done_compare; 524 525 rv = 0; 526 if (from_len != to_len) 527 return 1; 528 529 if (from_len <= 8 * 1024 * 1024) { 530 done_compare = 0; 531 if (trymmap(from_fd) && trymmap(to_fd)) { 532 p = mmap(NULL, from_len, PROT_READ, MAP_SHARED, from_fd, (off_t)0); 533 if (p == (char *)MAP_FAILED) 534 goto out; 535 q = mmap(NULL, from_len, PROT_READ, MAP_SHARED, to_fd, (off_t)0); 536 if (q == (char *)MAP_FAILED) { 537 munmap(p, from_len); 538 goto out; 539 } 540 541 rv = memcmp(p, q, from_len); 542 munmap(p, from_len); 543 munmap(q, from_len); 544 done_compare = 1; 545 } 546 out: 547 if (!done_compare) { 548 char buf1[MAXBSIZE]; 549 char buf2[MAXBSIZE]; 550 int n1, n2; 551 552 rv = 0; 553 lseek(from_fd, 0, SEEK_SET); 554 lseek(to_fd, 0, SEEK_SET); 555 while (rv == 0) { 556 n1 = read(from_fd, buf1, sizeof(buf1)); 557 if (n1 == 0) 558 break; /* EOF */ 559 else if (n1 > 0) { 560 n2 = read(to_fd, buf2, n1); 561 if (n2 == n1) 562 rv = memcmp(buf1, buf2, n1); 563 else 564 rv = 1; /* out of sync */ 565 } else 566 rv = 1; /* read failure */ 567 } 568 lseek(from_fd, 0, SEEK_SET); 569 lseek(to_fd, 0, SEEK_SET); 570 } 571 } else 572 rv = 1; /* don't bother in this case */ 573 574 return rv; 575} 576 577/* 578 * create_tempfile -- 579 * create a temporary file based on path and open it 580 */ 581int 582create_tempfile(path, temp, tsize) 583 const char *path; 584 char *temp; 585 size_t tsize; 586{ 587 char *p; 588 589 (void)strncpy(temp, path, tsize); 590 temp[tsize - 1] = '\0'; 591 if ((p = strrchr(temp, '/')) != NULL) 592 p++; 593 else 594 p = temp; 595 (void)strncpy(p, "INS@XXXX", &temp[tsize - 1] - p); 596 temp[tsize - 1] = '\0'; 597 return (mkstemp(temp)); 598} 599 600/* 601 * create_newfile -- 602 * create a new file, overwriting an existing one if necessary 603 */ 604int 605create_newfile(path, target, sbp) 606 const char *path; 607 int target; 608 struct stat *sbp; 609{ 610 char backup[MAXPATHLEN]; 611 612 if (target) { 613 /* 614 * Unlink now... avoid ETXTBSY errors later. Try to turn 615 * off the append/immutable bits -- if we fail, go ahead, 616 * it might work. 617 */ 618 if (sbp->st_flags & NOCHANGEBITS) 619 (void)chflags(path, sbp->st_flags & ~NOCHANGEBITS); 620 621 if (dobackup) { 622 if ((size_t)snprintf(backup, MAXPATHLEN, "%s%s", 623 path, suffix) != strlen(path) + strlen(suffix)) 624 errx(EX_OSERR, "%s: backup filename too long", 625 path); 626 (void)snprintf(backup, MAXPATHLEN, "%s%s", 627 path, suffix); 628 if (verbose) 629 (void)printf("install: %s -> %s\n", 630 path, backup); 631 if (rename(path, backup) < 0) 632 err(EX_OSERR, "rename: %s to %s", path, backup); 633 } else 634 (void)unlink(path); 635 } 636 637 return (open(path, O_CREAT | O_RDWR | O_TRUNC, S_IRUSR | S_IWUSR)); 638} 639 640/* 641 * copy -- 642 * copy from one file to another 643 */ 644void 645copy(from_fd, from_name, to_fd, to_name, size) 646 register int from_fd, to_fd; 647 const char *from_name, *to_name; 648 off_t size; 649{ 650 register int nr, nw; 651 int serrno; 652 char *p, buf[MAXBSIZE]; 653 int done_copy; 654 655 /* Rewind file descriptors. */ 656 if (lseek(from_fd, (off_t)0, SEEK_SET) == (off_t)-1) 657 err(EX_OSERR, "lseek: %s", from_name); 658 if (lseek(to_fd, (off_t)0, SEEK_SET) == (off_t)-1) 659 err(EX_OSERR, "lseek: %s", to_name); 660 661 /* 662 * Mmap and write if less than 8M (the limit is so we don't totally 663 * trash memory on big files. This is really a minor hack, but it 664 * wins some CPU back. 665 */ 666 done_copy = 0; 667 if (size <= 8 * 1048576 && trymmap(from_fd) && 668 (p = mmap(NULL, (size_t)size, PROT_READ, MAP_SHARED, 669 from_fd, (off_t)0)) != (char *)MAP_FAILED) { 670 if ((nw = write(to_fd, p, size)) != size) { 671 serrno = errno; 672 (void)unlink(to_name); 673 errno = nw > 0 ? EIO : serrno; 674 err(EX_OSERR, "%s", to_name); 675 } 676 done_copy = 1; 677 } 678 if (!done_copy) { 679 while ((nr = read(from_fd, buf, sizeof(buf))) > 0) 680 if ((nw = write(to_fd, buf, nr)) != nr) { 681 serrno = errno; 682 (void)unlink(to_name); 683 errno = nw > 0 ? EIO : serrno; 684 err(EX_OSERR, "%s", to_name); 685 } 686 if (nr != 0) { 687 serrno = errno; 688 (void)unlink(to_name); 689 errno = serrno; 690 err(EX_OSERR, "%s", from_name); 691 } 692 } 693} 694 695/* 696 * strip -- 697 * use strip(1) to strip the target file 698 */ 699void 700strip(to_name) 701 const char *to_name; 702{ 703 int serrno, status; 704 705 switch (fork()) { 706 case -1: 707 serrno = errno; 708 (void)unlink(to_name); 709 errno = serrno; 710 err(EX_TEMPFAIL, "fork"); 711 case 0: 712 execlp("strip", "strip", to_name, (char *)NULL); 713 err(EX_OSERR, "exec(strip)"); 714 default: 715 if (wait(&status) == -1 || status) { 716 (void)unlink(to_name); 717 exit(EX_SOFTWARE); 718 /* NOTREACHED */ 719 } 720 } 721} 722 723/* 724 * install_dir -- 725 * build directory heirarchy 726 */ 727void 728install_dir(path) 729 char *path; 730{ 731 register char *p; 732 struct stat sb; 733 int ch; 734 735 for (p = path;; ++p) 736 if (!*p || (p != path && *p == '/')) { 737 ch = *p; 738 *p = '\0'; 739 if (stat(path, &sb)) { 740 if (errno != ENOENT || mkdir(path, 0755) < 0) { 741 err(EX_OSERR, "mkdir %s", path); 742 /* NOTREACHED */ 743 } else if (verbose) 744 (void)printf("install: mkdir %s\n", 745 path); 746 } else if (!S_ISDIR(sb.st_mode)) 747 errx(EX_OSERR, "%s exists but is not a directory", path); 748 if (!(*p = ch)) 749 break; 750 } 751 752 if ((gid != (gid_t)-1 || uid != (uid_t)-1) && chown(path, uid, gid)) 753 warn("chown %u:%u %s", uid, gid, path); 754 if (chmod(path, mode)) 755 warn("chmod %o %s", mode, path); 756} 757 758/* 759 * usage -- 760 * print a usage message and die 761 */ 762void 763usage() 764{ 765 (void)fprintf(stderr, "\ 766usage: install [-bCcpSsv] [-B suffix] [-f flags] [-g group] [-m mode]\n\ 767 [-o owner] file1 file2\n\ 768 install [-bCcpSsv] [-B suffix] [-f flags] [-g group] [-m mode]\n\ 769 [-o owner] file1 ... fileN directory\n\ 770 install -d [-v] [-g group] [-m mode] [-o owner] directory ...\n"); 771 exit(EX_USAGE); 772 /* NOTREACHED */ 773} 774 775/* 776 * trymmap -- 777 * return true (1) if mmap should be tried, false (0) if not. 778 */ 779int 780trymmap(fd) 781 int fd; 782{ 783/* 784 * The ifdef is for bootstrapping - f_fstypename doesn't exist in 785 * pre-Lite2-merge systems. 786 */ 787#ifdef MFSNAMELEN 788 struct statfs stfs; 789 790 if (nommap || fstatfs(fd, &stfs) != 0) 791 return (0); 792 if (strcmp(stfs.f_fstypename, "ufs") == 0 || 793 strcmp(stfs.f_fstypename, "cd9660") == 0) 794 return (1); 795#endif 796 return (0); 797} 798