xinstall.c revision 200420
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 35static 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 42static 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: head/usr.bin/xinstall/xinstall.c 200420 2009-12-11 23:35:38Z delphij $"); 48 49#include <sys/param.h> 50#include <sys/mman.h> 51#include <sys/mount.h> 52#include <sys/stat.h> 53#include <sys/time.h> 54#include <sys/wait.h> 55 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 68/* Bootstrap aid - this doesn't exist in most older releases */ 69#ifndef MAP_FAILED 70#define MAP_FAILED ((void *)-1) /* from <sys/mman.h> */ 71#endif 72 73#define MAX_CMP_SIZE (16 * 1024 * 1024) 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 88static void copy(int, const char *, int, const char *, off_t); 89static int compare(int, const char *, size_t, int, const char *, size_t); 90static int create_newfile(const char *, int, struct stat *); 91static int create_tempfile(const char *, char *, size_t); 92static void install(const char *, const char *, u_long, u_int); 93static void install_dir(char *); 94static u_long numeric_id(const char *, const char *); 95static void strip(const char *); 96static int trymmap(int); 97static void usage(void); 98 99int 100main(int argc, char *argv[]) 101{ 102 struct stat from_sb, to_sb; 103 mode_t *set; 104 u_long fset; 105 int ch, no_target; 106 u_int iflags; 107 char *flags; 108 const char *group, *owner, *to_name; 109 110 iflags = 0; 111 group = owner = NULL; 112 while ((ch = getopt(argc, argv, "B:bCcdf:g:Mm:o:pSsv")) != -1) 113 switch((char)ch) { 114 case 'B': 115 suffix = optarg; 116 /* FALLTHROUGH */ 117 case 'b': 118 dobackup = 1; 119 break; 120 case 'C': 121 docompare = 1; 122 break; 123 case 'c': 124 /* For backwards compatibility. */ 125 break; 126 case 'd': 127 dodir = 1; 128 break; 129 case 'f': 130 flags = optarg; 131 if (strtofflags(&flags, &fset, NULL)) 132 errx(EX_USAGE, "%s: invalid flag", flags); 133 iflags |= SETFLAGS; 134 break; 135 case 'g': 136 group = optarg; 137 break; 138 case 'M': 139 nommap = 1; 140 break; 141 case 'm': 142 if (!(set = setmode(optarg))) 143 errx(EX_USAGE, "invalid file mode: %s", 144 optarg); 145 mode = getmode(set, 0); 146 free(set); 147 break; 148 case 'o': 149 owner = optarg; 150 break; 151 case 'p': 152 docompare = dopreserve = 1; 153 break; 154 case 'S': 155 safecopy = 1; 156 break; 157 case 's': 158 dostrip = 1; 159 break; 160 case 'v': 161 verbose = 1; 162 break; 163 case '?': 164 default: 165 usage(); 166 } 167 argc -= optind; 168 argv += optind; 169 170 /* some options make no sense when creating directories */ 171 if (dostrip && dodir) { 172 warnx("-d and -s may not be specified together"); 173 usage(); 174 } 175 176 if (getenv("DONTSTRIP") != NULL) { 177 warnx("DONTSTRIP set - will not strip installed binaries"); 178 dostrip = 0; 179 } 180 181 /* must have at least two arguments, except when creating directories */ 182 if (argc == 0 || (argc == 1 && !dodir)) 183 usage(); 184 185 /* need to make a temp copy so we can compare stripped version */ 186 if (docompare && dostrip) 187 safecopy = 1; 188 189 /* get group and owner id's */ 190 if (group != NULL) { 191 if ((gp = getgrnam(group)) != NULL) 192 gid = gp->gr_gid; 193 else 194 gid = (gid_t)numeric_id(group, "group"); 195 } else 196 gid = (gid_t)-1; 197 198 if (owner != NULL) { 199 if ((pp = getpwnam(owner)) != NULL) 200 uid = pp->pw_uid; 201 else 202 uid = (uid_t)numeric_id(owner, "user"); 203 } else 204 uid = (uid_t)-1; 205 206 if (dodir) { 207 for (; *argv != NULL; ++argv) 208 install_dir(*argv); 209 exit(EX_OK); 210 /* NOTREACHED */ 211 } 212 213 no_target = stat(to_name = argv[argc - 1], &to_sb); 214 if (!no_target && S_ISDIR(to_sb.st_mode)) { 215 for (; *argv != to_name; ++argv) 216 install(*argv, to_name, fset, iflags | DIRECTORY); 217 exit(EX_OK); 218 /* NOTREACHED */ 219 } 220 221 /* can't do file1 file2 directory/file */ 222 if (argc != 2) { 223 if (no_target) 224 warnx("target directory `%s' does not exist", 225 argv[argc - 1]); 226 else 227 warnx("target `%s' is not a directory", 228 argv[argc - 1]); 229 usage(); 230 } 231 232 if (!no_target) { 233 if (stat(*argv, &from_sb)) 234 err(EX_OSERR, "%s", *argv); 235 if (!S_ISREG(to_sb.st_mode)) { 236 errno = EFTYPE; 237 err(EX_OSERR, "%s", to_name); 238 } 239 if (to_sb.st_dev == from_sb.st_dev && 240 to_sb.st_ino == from_sb.st_ino) 241 errx(EX_USAGE, 242 "%s and %s are the same file", *argv, to_name); 243 } 244 install(*argv, to_name, fset, iflags); 245 exit(EX_OK); 246 /* NOTREACHED */ 247} 248 249u_long 250numeric_id(const char *name, const char *type) 251{ 252 u_long val; 253 char *ep; 254 255 /* 256 * XXX 257 * We know that uid_t's and gid_t's are unsigned longs. 258 */ 259 errno = 0; 260 val = strtoul(name, &ep, 10); 261 if (errno) 262 err(EX_NOUSER, "%s", name); 263 if (*ep != '\0') 264 errx(EX_NOUSER, "unknown %s %s", type, name); 265 return (val); 266} 267 268/* 269 * install -- 270 * build a path name and install the file 271 */ 272void 273install(const char *from_name, const char *to_name, u_long fset, u_int flags) 274{ 275 struct stat from_sb, temp_sb, to_sb; 276 struct timeval tvb[2]; 277 int devnull, files_match, from_fd, serrno, target; 278 int tempcopy, temp_fd, to_fd; 279 char backup[MAXPATHLEN], *p, pathbuf[MAXPATHLEN], tempfile[MAXPATHLEN]; 280 281 files_match = 0; 282 from_fd = -1; 283 to_fd = -1; 284 285 /* If try to install NULL file to a directory, fails. */ 286 if (flags & DIRECTORY || strcmp(from_name, _PATH_DEVNULL)) { 287 if (stat(from_name, &from_sb)) 288 err(EX_OSERR, "%s", from_name); 289 if (!S_ISREG(from_sb.st_mode)) { 290 errno = EFTYPE; 291 err(EX_OSERR, "%s", from_name); 292 } 293 /* Build the target path. */ 294 if (flags & DIRECTORY) { 295 (void)snprintf(pathbuf, sizeof(pathbuf), "%s/%s", 296 to_name, 297 (p = strrchr(from_name, '/')) ? ++p : from_name); 298 to_name = pathbuf; 299 } 300 devnull = 0; 301 } else { 302 devnull = 1; 303 } 304 305 target = stat(to_name, &to_sb) == 0; 306 307 /* Only install to regular files. */ 308 if (target && !S_ISREG(to_sb.st_mode)) { 309 errno = EFTYPE; 310 warn("%s", to_name); 311 return; 312 } 313 314 /* Only copy safe if the target exists. */ 315 tempcopy = safecopy && target; 316 317 if (!devnull && (from_fd = open(from_name, O_RDONLY, 0)) < 0) 318 err(EX_OSERR, "%s", from_name); 319 320 /* If we don't strip, we can compare first. */ 321 if (docompare && !dostrip && target) { 322 if ((to_fd = open(to_name, O_RDONLY, 0)) < 0) 323 err(EX_OSERR, "%s", to_name); 324 if (devnull) 325 files_match = to_sb.st_size == 0; 326 else 327 files_match = !(compare(from_fd, from_name, 328 (size_t)from_sb.st_size, to_fd, 329 to_name, (size_t)to_sb.st_size)); 330 331 /* Close "to" file unless we match. */ 332 if (!files_match) 333 (void)close(to_fd); 334 } 335 336 if (!files_match) { 337 if (tempcopy) { 338 to_fd = create_tempfile(to_name, tempfile, 339 sizeof(tempfile)); 340 if (to_fd < 0) 341 err(EX_OSERR, "%s", tempfile); 342 } else { 343 if ((to_fd = create_newfile(to_name, target, 344 &to_sb)) < 0) 345 err(EX_OSERR, "%s", to_name); 346 if (verbose) 347 (void)printf("install: %s -> %s\n", 348 from_name, to_name); 349 } 350 if (!devnull) 351 copy(from_fd, from_name, to_fd, 352 tempcopy ? tempfile : to_name, from_sb.st_size); 353 } 354 355 if (dostrip) { 356 strip(tempcopy ? tempfile : to_name); 357 358 /* 359 * Re-open our fd on the target, in case we used a strip 360 * that does not work in-place -- like GNU binutils strip. 361 */ 362 close(to_fd); 363 to_fd = open(tempcopy ? tempfile : to_name, O_RDONLY, 0); 364 if (to_fd < 0) 365 err(EX_OSERR, "stripping %s", to_name); 366 } 367 368 /* 369 * Compare the stripped temp file with the target. 370 */ 371 if (docompare && dostrip && target) { 372 temp_fd = to_fd; 373 374 /* Re-open to_fd using the real target name. */ 375 if ((to_fd = open(to_name, O_RDONLY, 0)) < 0) 376 err(EX_OSERR, "%s", to_name); 377 378 if (fstat(temp_fd, &temp_sb)) { 379 serrno = errno; 380 (void)unlink(tempfile); 381 errno = serrno; 382 err(EX_OSERR, "%s", tempfile); 383 } 384 385 if (compare(temp_fd, tempfile, (size_t)temp_sb.st_size, to_fd, 386 to_name, (size_t)to_sb.st_size) == 0) { 387 /* 388 * If target has more than one link we need to 389 * replace it in order to snap the extra links. 390 * Need to preserve target file times, though. 391 */ 392 if (to_sb.st_nlink != 1) { 393 tvb[0].tv_sec = to_sb.st_atime; 394 tvb[0].tv_usec = 0; 395 tvb[1].tv_sec = to_sb.st_mtime; 396 tvb[1].tv_usec = 0; 397 (void)utimes(tempfile, tvb); 398 } else { 399 files_match = 1; 400 (void)unlink(tempfile); 401 } 402 (void) close(temp_fd); 403 } 404 } 405 406 /* 407 * Move the new file into place if doing a safe copy 408 * and the files are different (or just not compared). 409 */ 410 if (tempcopy && !files_match) { 411 /* Try to turn off the immutable bits. */ 412 if (to_sb.st_flags & NOCHANGEBITS) 413 (void)chflags(to_name, to_sb.st_flags & ~NOCHANGEBITS); 414 if (dobackup) { 415 if ((size_t)snprintf(backup, MAXPATHLEN, "%s%s", to_name, 416 suffix) != strlen(to_name) + strlen(suffix)) { 417 unlink(tempfile); 418 errx(EX_OSERR, "%s: backup filename too long", 419 to_name); 420 } 421 if (verbose) 422 (void)printf("install: %s -> %s\n", to_name, backup); 423 if (rename(to_name, backup) < 0) { 424 serrno = errno; 425 unlink(tempfile); 426 errno = serrno; 427 err(EX_OSERR, "rename: %s to %s", to_name, 428 backup); 429 } 430 } 431 if (verbose) 432 (void)printf("install: %s -> %s\n", from_name, to_name); 433 if (rename(tempfile, to_name) < 0) { 434 serrno = errno; 435 unlink(tempfile); 436 errno = serrno; 437 err(EX_OSERR, "rename: %s to %s", 438 tempfile, to_name); 439 } 440 441 /* Re-open to_fd so we aren't hosed by the rename(2). */ 442 (void) close(to_fd); 443 if ((to_fd = open(to_name, O_RDONLY, 0)) < 0) 444 err(EX_OSERR, "%s", to_name); 445 } 446 447 /* 448 * Preserve the timestamp of the source file if necessary. 449 */ 450 if (dopreserve && !files_match && !devnull) { 451 tvb[0].tv_sec = from_sb.st_atime; 452 tvb[0].tv_usec = 0; 453 tvb[1].tv_sec = from_sb.st_mtime; 454 tvb[1].tv_usec = 0; 455 (void)utimes(to_name, tvb); 456 } 457 458 if (fstat(to_fd, &to_sb) == -1) { 459 serrno = errno; 460 (void)unlink(to_name); 461 errno = serrno; 462 err(EX_OSERR, "%s", to_name); 463 } 464 465 /* 466 * Set owner, group, mode for target; do the chown first, 467 * chown may lose the setuid bits. 468 */ 469 if ((gid != (gid_t)-1 && gid != to_sb.st_gid) || 470 (uid != (uid_t)-1 && uid != to_sb.st_uid) || 471 (mode != (to_sb.st_mode & ALLPERMS))) { 472 /* Try to turn off the immutable bits. */ 473 if (to_sb.st_flags & NOCHANGEBITS) 474 (void)fchflags(to_fd, to_sb.st_flags & ~NOCHANGEBITS); 475 } 476 477 if ((gid != (gid_t)-1 && gid != to_sb.st_gid) || 478 (uid != (uid_t)-1 && uid != to_sb.st_uid)) 479 if (fchown(to_fd, uid, gid) == -1) { 480 serrno = errno; 481 (void)unlink(to_name); 482 errno = serrno; 483 err(EX_OSERR,"%s: chown/chgrp", to_name); 484 } 485 486 if (mode != (to_sb.st_mode & ALLPERMS)) 487 if (fchmod(to_fd, mode)) { 488 serrno = errno; 489 (void)unlink(to_name); 490 errno = serrno; 491 err(EX_OSERR, "%s: chmod", to_name); 492 } 493 494 /* 495 * If provided a set of flags, set them, otherwise, preserve the 496 * flags, except for the dump flag. 497 * NFS does not support flags. Ignore EOPNOTSUPP flags if we're just 498 * trying to turn off UF_NODUMP. If we're trying to set real flags, 499 * then warn if the the fs doesn't support it, otherwise fail. 500 */ 501 if (!devnull && (flags & SETFLAGS || 502 (from_sb.st_flags & ~UF_NODUMP) != to_sb.st_flags) && 503 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 (!devnull) 519 (void)close(from_fd); 520} 521 522/* 523 * compare -- 524 * compare two files; non-zero means files differ 525 */ 526int 527compare(int from_fd, const char *from_name __unused, size_t from_len, 528 int to_fd, const char *to_name __unused, size_t to_len) 529{ 530 char *p, *q; 531 int rv; 532 int done_compare; 533 534 rv = 0; 535 if (from_len != to_len) 536 return 1; 537 538 if (from_len <= MAX_CMP_SIZE) { 539 done_compare = 0; 540 if (trymmap(from_fd) && trymmap(to_fd)) { 541 p = mmap(NULL, from_len, PROT_READ, MAP_SHARED, from_fd, (off_t)0); 542 if (p == (char *)MAP_FAILED) 543 goto out; 544 q = mmap(NULL, from_len, PROT_READ, MAP_SHARED, to_fd, (off_t)0); 545 if (q == (char *)MAP_FAILED) { 546 munmap(p, from_len); 547 goto out; 548 } 549 550 rv = memcmp(p, q, from_len); 551 munmap(p, from_len); 552 munmap(q, from_len); 553 done_compare = 1; 554 } 555 out: 556 if (!done_compare) { 557 char buf1[MAXBSIZE]; 558 char buf2[MAXBSIZE]; 559 int n1, n2; 560 561 rv = 0; 562 lseek(from_fd, 0, SEEK_SET); 563 lseek(to_fd, 0, SEEK_SET); 564 while (rv == 0) { 565 n1 = read(from_fd, buf1, sizeof(buf1)); 566 if (n1 == 0) 567 break; /* EOF */ 568 else if (n1 > 0) { 569 n2 = read(to_fd, buf2, n1); 570 if (n2 == n1) 571 rv = memcmp(buf1, buf2, n1); 572 else 573 rv = 1; /* out of sync */ 574 } else 575 rv = 1; /* read failure */ 576 } 577 lseek(from_fd, 0, SEEK_SET); 578 lseek(to_fd, 0, SEEK_SET); 579 } 580 } else 581 rv = 1; /* don't bother in this case */ 582 583 return rv; 584} 585 586/* 587 * create_tempfile -- 588 * create a temporary file based on path and open it 589 */ 590int 591create_tempfile(const char *path, char *temp, size_t tsize) 592{ 593 char *p; 594 595 (void)strncpy(temp, path, tsize); 596 temp[tsize - 1] = '\0'; 597 if ((p = strrchr(temp, '/')) != NULL) 598 p++; 599 else 600 p = temp; 601 (void)strncpy(p, "INS@XXXX", &temp[tsize - 1] - p); 602 temp[tsize - 1] = '\0'; 603 return (mkstemp(temp)); 604} 605 606/* 607 * create_newfile -- 608 * create a new file, overwriting an existing one if necessary 609 */ 610int 611create_newfile(const char *path, int target, struct stat *sbp) 612{ 613 char backup[MAXPATHLEN]; 614 int saved_errno = 0; 615 int newfd; 616 617 if (target) { 618 /* 619 * Unlink now... avoid ETXTBSY errors later. Try to turn 620 * off the append/immutable bits -- if we fail, go ahead, 621 * it might work. 622 */ 623 if (sbp->st_flags & NOCHANGEBITS) 624 (void)chflags(path, sbp->st_flags & ~NOCHANGEBITS); 625 626 if (dobackup) { 627 if ((size_t)snprintf(backup, MAXPATHLEN, "%s%s", 628 path, suffix) != strlen(path) + strlen(suffix)) 629 errx(EX_OSERR, "%s: backup filename too long", 630 path); 631 (void)snprintf(backup, MAXPATHLEN, "%s%s", 632 path, suffix); 633 if (verbose) 634 (void)printf("install: %s -> %s\n", 635 path, backup); 636 if (rename(path, backup) < 0) 637 err(EX_OSERR, "rename: %s to %s", path, backup); 638 } else 639 if (unlink(path) < 0) 640 saved_errno = errno; 641 } 642 643 newfd = open(path, O_CREAT | O_RDWR | O_TRUNC, S_IRUSR | S_IWUSR); 644 if (newfd < 0 && saved_errno != 0) 645 errno = saved_errno; 646 return newfd; 647} 648 649/* 650 * copy -- 651 * copy from one file to another 652 */ 653void 654copy(int from_fd, const char *from_name, int to_fd, const char *to_name, 655 off_t size) 656{ 657 int nr, nw; 658 int serrno; 659 char *p, buf[MAXBSIZE]; 660 int done_copy; 661 662 /* Rewind file descriptors. */ 663 if (lseek(from_fd, (off_t)0, SEEK_SET) == (off_t)-1) 664 err(EX_OSERR, "lseek: %s", from_name); 665 if (lseek(to_fd, (off_t)0, SEEK_SET) == (off_t)-1) 666 err(EX_OSERR, "lseek: %s", to_name); 667 668 /* 669 * Mmap and write if less than 8M (the limit is so we don't totally 670 * trash memory on big files. This is really a minor hack, but it 671 * wins some CPU back. 672 */ 673 done_copy = 0; 674 if (size <= 8 * 1048576 && trymmap(from_fd) && 675 (p = mmap(NULL, (size_t)size, PROT_READ, MAP_SHARED, 676 from_fd, (off_t)0)) != (char *)MAP_FAILED) { 677 if ((nw = write(to_fd, p, size)) != size) { 678 serrno = errno; 679 (void)unlink(to_name); 680 errno = nw > 0 ? EIO : serrno; 681 err(EX_OSERR, "%s", to_name); 682 } 683 done_copy = 1; 684 } 685 if (!done_copy) { 686 while ((nr = read(from_fd, buf, sizeof(buf))) > 0) 687 if ((nw = write(to_fd, buf, nr)) != nr) { 688 serrno = errno; 689 (void)unlink(to_name); 690 errno = nw > 0 ? EIO : serrno; 691 err(EX_OSERR, "%s", to_name); 692 } 693 if (nr != 0) { 694 serrno = errno; 695 (void)unlink(to_name); 696 errno = serrno; 697 err(EX_OSERR, "%s", from_name); 698 } 699 } 700} 701 702/* 703 * strip -- 704 * use strip(1) to strip the target file 705 */ 706void 707strip(const char *to_name) 708{ 709 const char *stripbin; 710 int serrno, status; 711 712 switch (fork()) { 713 case -1: 714 serrno = errno; 715 (void)unlink(to_name); 716 errno = serrno; 717 err(EX_TEMPFAIL, "fork"); 718 case 0: 719 stripbin = getenv("STRIPBIN"); 720 if (stripbin == NULL) 721 stripbin = "strip"; 722 execlp(stripbin, stripbin, to_name, (char *)NULL); 723 err(EX_OSERR, "exec(%s)", stripbin); 724 default: 725 if (wait(&status) == -1 || status) { 726 serrno = errno; 727 (void)unlink(to_name); 728 errc(EX_SOFTWARE, serrno, "wait"); 729 /* NOTREACHED */ 730 } 731 } 732} 733 734/* 735 * install_dir -- 736 * build directory heirarchy 737 */ 738void 739install_dir(char *path) 740{ 741 char *p; 742 struct stat sb; 743 int ch; 744 745 for (p = path;; ++p) 746 if (!*p || (p != path && *p == '/')) { 747 ch = *p; 748 *p = '\0'; 749 if (stat(path, &sb)) { 750 if (errno != ENOENT || mkdir(path, 0755) < 0) { 751 err(EX_OSERR, "mkdir %s", path); 752 /* NOTREACHED */ 753 } else if (verbose) 754 (void)printf("install: mkdir %s\n", 755 path); 756 } else if (!S_ISDIR(sb.st_mode)) 757 errx(EX_OSERR, "%s exists but is not a directory", path); 758 if (!(*p = ch)) 759 break; 760 } 761 762 if ((gid != (gid_t)-1 || uid != (uid_t)-1) && chown(path, uid, gid)) 763 warn("chown %u:%u %s", uid, gid, path); 764 if (chmod(path, mode)) 765 warn("chmod %o %s", mode, path); 766} 767 768/* 769 * usage -- 770 * print a usage message and die 771 */ 772void 773usage() 774{ 775 (void)fprintf(stderr, 776"usage: install [-bCcpSsv] [-B suffix] [-f flags] [-g group] [-m mode]\n" 777" [-o owner] file1 file2\n" 778" install [-bCcpSsv] [-B suffix] [-f flags] [-g group] [-m mode]\n" 779" [-o owner] file1 ... fileN directory\n" 780" install -d [-v] [-g group] [-m mode] [-o owner] directory ...\n"); 781 exit(EX_USAGE); 782 /* NOTREACHED */ 783} 784 785/* 786 * trymmap -- 787 * return true (1) if mmap should be tried, false (0) if not. 788 */ 789int 790trymmap(int fd) 791{ 792/* 793 * The ifdef is for bootstrapping - f_fstypename doesn't exist in 794 * pre-Lite2-merge systems. 795 */ 796#ifdef MFSNAMELEN 797 struct statfs stfs; 798 799 if (nommap || fstatfs(fd, &stfs) != 0) 800 return (0); 801 if (strcmp(stfs.f_fstypename, "ufs") == 0 || 802 strcmp(stfs.f_fstypename, "cd9660") == 0) 803 return (1); 804#endif 805 return (0); 806} 807