xinstall.c revision 245312
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 * 4. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30#ifndef lint 31static const char copyright[] = 32"@(#) Copyright (c) 1987, 1993\n\ 33 The Regents of the University of California. All rights reserved.\n"; 34#endif /* not lint */ 35 36#if 0 37#ifndef lint 38static char sccsid[] = "@(#)xinstall.c 8.1 (Berkeley) 7/21/93"; 39#endif /* not lint */ 40#endif 41 42#include <sys/cdefs.h> 43__FBSDID("$FreeBSD: head/usr.bin/xinstall/xinstall.c 245312 2013-01-11 20:53:28Z brooks $"); 44 45#include <sys/param.h> 46#include <sys/mman.h> 47#include <sys/mount.h> 48#include <sys/stat.h> 49#include <sys/time.h> 50#include <sys/wait.h> 51 52#include <err.h> 53#include <errno.h> 54#include <fcntl.h> 55#include <grp.h> 56#include <paths.h> 57#include <pwd.h> 58#include <stdint.h> 59#include <stdio.h> 60#include <stdlib.h> 61#include <string.h> 62#include <sysexits.h> 63#include <unistd.h> 64 65#include "mtree.h" 66 67/* Bootstrap aid - this doesn't exist in most older releases */ 68#ifndef MAP_FAILED 69#define MAP_FAILED ((void *)-1) /* from <sys/mman.h> */ 70#endif 71 72#define MAX_CMP_SIZE (16 * 1024 * 1024) 73 74#define DIRECTORY 0x01 /* Tell install it's a directory. */ 75#define SETFLAGS 0x02 /* Tell install to set flags. */ 76#define NOCHANGEBITS (UF_IMMUTABLE | UF_APPEND | SF_IMMUTABLE | SF_APPEND) 77#define BACKUP_SUFFIX ".old" 78 79static gid_t gid; 80static uid_t uid; 81static int dobackup, docompare, dodir, dopreserve, dostrip, nommap, safecopy, 82 verbose; 83static mode_t mode = S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH; 84static const char *suffix = BACKUP_SUFFIX; 85 86static int compare(int, const char *, size_t, int, const char *, size_t); 87static void copy(int, const char *, int, const char *, off_t); 88static int create_newfile(const char *, int, struct stat *); 89static int create_tempfile(const char *, char *, size_t); 90static void install(const char *, const char *, u_long, u_int); 91static void install_dir(char *); 92static int parseid(const char *, id_t *); 93static void strip(const char *); 94static int trymmap(int); 95static void usage(void); 96 97int 98main(int argc, char *argv[]) 99{ 100 struct stat from_sb, to_sb; 101 mode_t *set; 102 u_long fset; 103 int ch, no_target; 104 u_int iflags; 105 char *flags; 106 const char *group, *owner, *to_name; 107 108 iflags = 0; 109 group = owner = NULL; 110 while ((ch = getopt(argc, argv, "B:bCcdf:g:Mm:N:o:pSsv")) != -1) 111 switch((char)ch) { 112 case 'B': 113 suffix = optarg; 114 /* FALLTHROUGH */ 115 case 'b': 116 dobackup = 1; 117 break; 118 case 'C': 119 docompare = 1; 120 break; 121 case 'c': 122 /* For backwards compatibility. */ 123 break; 124 case 'd': 125 dodir = 1; 126 break; 127 case 'f': 128 flags = optarg; 129 if (strtofflags(&flags, &fset, NULL)) 130 errx(EX_USAGE, "%s: invalid flag", flags); 131 iflags |= SETFLAGS; 132 break; 133 case 'g': 134 group = optarg; 135 break; 136 case 'M': 137 nommap = 1; 138 break; 139 case 'm': 140 if (!(set = setmode(optarg))) 141 errx(EX_USAGE, "invalid file mode: %s", 142 optarg); 143 mode = getmode(set, 0); 144 free(set); 145 break; 146 case 'N': 147 if (!setup_getid(optarg)) 148 err(1, "Unable to use user and group " 149 "databases in `%s'", optarg); 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 warnx("-d and -s may not be specified together"); 176 usage(); 177 } 178 179 if (getenv("DONTSTRIP") != NULL) { 180 warnx("DONTSTRIP set - will not strip installed binaries"); 181 dostrip = 0; 182 } 183 184 /* must have at least two arguments, except when creating directories */ 185 if (argc == 0 || (argc == 1 && !dodir)) 186 usage(); 187 188 /* need to make a temp copy so we can compare stripped version */ 189 if (docompare && dostrip) 190 safecopy = 1; 191 192 /* get group and owner id's */ 193 if (group != NULL) { 194 if (gid_from_group(group, &gid) == -1) { 195 id_t id; 196 if (!parseid(group, &id)) 197 errx(1, "unknown group %s", group); 198 gid = id; 199 } 200 } else 201 gid = (gid_t)-1; 202 203 if (owner != NULL) { 204 if (uid_from_user(owner, &uid) == -1) { 205 id_t id; 206 if (!parseid(owner, &id)) 207 errx(1, "unknown user %s", owner); 208 uid = id; 209 } 210 } else 211 uid = (uid_t)-1; 212 213 if (dodir) { 214 for (; *argv != NULL; ++argv) 215 install_dir(*argv); 216 exit(EX_OK); 217 /* NOTREACHED */ 218 } 219 220 no_target = stat(to_name = argv[argc - 1], &to_sb); 221 if (!no_target && S_ISDIR(to_sb.st_mode)) { 222 for (; *argv != to_name; ++argv) 223 install(*argv, to_name, fset, iflags | DIRECTORY); 224 exit(EX_OK); 225 /* NOTREACHED */ 226 } 227 228 /* can't do file1 file2 directory/file */ 229 if (argc != 2) { 230 if (no_target) 231 warnx("target directory `%s' does not exist", 232 argv[argc - 1]); 233 else 234 warnx("target `%s' is not a directory", 235 argv[argc - 1]); 236 usage(); 237 } 238 239 if (!no_target) { 240 if (stat(*argv, &from_sb)) 241 err(EX_OSERR, "%s", *argv); 242 if (!S_ISREG(to_sb.st_mode)) { 243 errno = EFTYPE; 244 err(EX_OSERR, "%s", to_name); 245 } 246 if (to_sb.st_dev == from_sb.st_dev && 247 to_sb.st_ino == from_sb.st_ino) 248 errx(EX_USAGE, 249 "%s and %s are the same file", *argv, to_name); 250 } 251 install(*argv, to_name, fset, iflags); 252 exit(EX_OK); 253 /* NOTREACHED */ 254} 255 256/* 257 * parseid -- 258 * parse uid or gid from arg into id, returning non-zero if successful 259 */ 260static int 261parseid(const char *name, id_t *id) 262{ 263 char *ep; 264 errno = 0; 265 *id = (id_t)strtoul(name, &ep, 10); 266 if (errno || *ep != '\0') 267 return (0); 268 return (1); 269} 270 271/* 272 * install -- 273 * build a path name and install the file 274 */ 275static void 276install(const char *from_name, const char *to_name, u_long fset, u_int flags) 277{ 278 struct stat from_sb, temp_sb, to_sb; 279 struct timeval tvb[2]; 280 int devnull, files_match, from_fd, serrno, target; 281 int tempcopy, temp_fd, to_fd; 282 char backup[MAXPATHLEN], *p, pathbuf[MAXPATHLEN], tempfile[MAXPATHLEN]; 283 284 files_match = 0; 285 from_fd = -1; 286 to_fd = -1; 287 288 /* If try to install NULL file to a directory, fails. */ 289 if (flags & DIRECTORY || strcmp(from_name, _PATH_DEVNULL)) { 290 if (stat(from_name, &from_sb)) 291 err(EX_OSERR, "%s", from_name); 292 if (!S_ISREG(from_sb.st_mode)) { 293 errno = EFTYPE; 294 err(EX_OSERR, "%s", from_name); 295 } 296 /* Build the target path. */ 297 if (flags & DIRECTORY) { 298 (void)snprintf(pathbuf, sizeof(pathbuf), "%s/%s", 299 to_name, 300 (p = strrchr(from_name, '/')) ? ++p : from_name); 301 to_name = pathbuf; 302 } 303 devnull = 0; 304 } else { 305 devnull = 1; 306 } 307 308 target = stat(to_name, &to_sb) == 0; 309 310 /* Only install to regular files. */ 311 if (target && !S_ISREG(to_sb.st_mode)) { 312 errno = EFTYPE; 313 warn("%s", to_name); 314 return; 315 } 316 317 /* Only copy safe if the target exists. */ 318 tempcopy = safecopy && target; 319 320 if (!devnull && (from_fd = open(from_name, O_RDONLY, 0)) < 0) 321 err(EX_OSERR, "%s", from_name); 322 323 /* If we don't strip, we can compare first. */ 324 if (docompare && !dostrip && target) { 325 if ((to_fd = open(to_name, O_RDONLY, 0)) < 0) 326 err(EX_OSERR, "%s", to_name); 327 if (devnull) 328 files_match = to_sb.st_size == 0; 329 else 330 files_match = !(compare(from_fd, from_name, 331 (size_t)from_sb.st_size, to_fd, 332 to_name, (size_t)to_sb.st_size)); 333 334 /* Close "to" file unless we match. */ 335 if (!files_match) 336 (void)close(to_fd); 337 } 338 339 if (!files_match) { 340 if (tempcopy) { 341 to_fd = create_tempfile(to_name, tempfile, 342 sizeof(tempfile)); 343 if (to_fd < 0) 344 err(EX_OSERR, "%s", tempfile); 345 } else { 346 if ((to_fd = create_newfile(to_name, target, 347 &to_sb)) < 0) 348 err(EX_OSERR, "%s", to_name); 349 if (verbose) 350 (void)printf("install: %s -> %s\n", 351 from_name, to_name); 352 } 353 if (!devnull) 354 copy(from_fd, from_name, to_fd, 355 tempcopy ? tempfile : to_name, from_sb.st_size); 356 } 357 358 if (dostrip) { 359 strip(tempcopy ? tempfile : to_name); 360 361 /* 362 * Re-open our fd on the target, in case we used a strip 363 * that does not work in-place -- like GNU binutils strip. 364 */ 365 close(to_fd); 366 to_fd = open(tempcopy ? tempfile : to_name, O_RDONLY, 0); 367 if (to_fd < 0) 368 err(EX_OSERR, "stripping %s", to_name); 369 } 370 371 /* 372 * Compare the stripped temp file with the target. 373 */ 374 if (docompare && dostrip && target) { 375 temp_fd = to_fd; 376 377 /* Re-open to_fd using the real target name. */ 378 if ((to_fd = open(to_name, O_RDONLY, 0)) < 0) 379 err(EX_OSERR, "%s", to_name); 380 381 if (fstat(temp_fd, &temp_sb)) { 382 serrno = errno; 383 (void)unlink(tempfile); 384 errno = serrno; 385 err(EX_OSERR, "%s", tempfile); 386 } 387 388 if (compare(temp_fd, tempfile, (size_t)temp_sb.st_size, to_fd, 389 to_name, (size_t)to_sb.st_size) == 0) { 390 /* 391 * If target has more than one link we need to 392 * replace it in order to snap the extra links. 393 * Need to preserve target file times, though. 394 */ 395 if (to_sb.st_nlink != 1) { 396 tvb[0].tv_sec = to_sb.st_atime; 397 tvb[0].tv_usec = 0; 398 tvb[1].tv_sec = to_sb.st_mtime; 399 tvb[1].tv_usec = 0; 400 (void)utimes(tempfile, tvb); 401 } else { 402 files_match = 1; 403 (void)unlink(tempfile); 404 } 405 (void) close(temp_fd); 406 } 407 } 408 409 /* 410 * Move the new file into place if doing a safe copy 411 * and the files are different (or just not compared). 412 */ 413 if (tempcopy && !files_match) { 414 /* Try to turn off the immutable bits. */ 415 if (to_sb.st_flags & NOCHANGEBITS) 416 (void)chflags(to_name, to_sb.st_flags & ~NOCHANGEBITS); 417 if (dobackup) { 418 if ((size_t)snprintf(backup, MAXPATHLEN, "%s%s", to_name, 419 suffix) != strlen(to_name) + strlen(suffix)) { 420 unlink(tempfile); 421 errx(EX_OSERR, "%s: backup filename too long", 422 to_name); 423 } 424 if (verbose) 425 (void)printf("install: %s -> %s\n", to_name, backup); 426 if (rename(to_name, backup) < 0) { 427 serrno = errno; 428 unlink(tempfile); 429 errno = serrno; 430 err(EX_OSERR, "rename: %s to %s", to_name, 431 backup); 432 } 433 } 434 if (verbose) 435 (void)printf("install: %s -> %s\n", from_name, to_name); 436 if (rename(tempfile, to_name) < 0) { 437 serrno = errno; 438 unlink(tempfile); 439 errno = serrno; 440 err(EX_OSERR, "rename: %s to %s", 441 tempfile, to_name); 442 } 443 444 /* Re-open to_fd so we aren't hosed by the rename(2). */ 445 (void) close(to_fd); 446 if ((to_fd = open(to_name, O_RDONLY, 0)) < 0) 447 err(EX_OSERR, "%s", to_name); 448 } 449 450 /* 451 * Preserve the timestamp of the source file if necessary. 452 */ 453 if (dopreserve && !files_match && !devnull) { 454 tvb[0].tv_sec = from_sb.st_atime; 455 tvb[0].tv_usec = 0; 456 tvb[1].tv_sec = from_sb.st_mtime; 457 tvb[1].tv_usec = 0; 458 (void)utimes(to_name, tvb); 459 } 460 461 if (fstat(to_fd, &to_sb) == -1) { 462 serrno = errno; 463 (void)unlink(to_name); 464 errno = serrno; 465 err(EX_OSERR, "%s", to_name); 466 } 467 468 /* 469 * Set owner, group, mode for target; do the chown first, 470 * chown may lose the setuid bits. 471 */ 472 if ((gid != (gid_t)-1 && gid != to_sb.st_gid) || 473 (uid != (uid_t)-1 && uid != to_sb.st_uid) || 474 (mode != (to_sb.st_mode & ALLPERMS))) { 475 /* Try to turn off the immutable bits. */ 476 if (to_sb.st_flags & NOCHANGEBITS) 477 (void)fchflags(to_fd, to_sb.st_flags & ~NOCHANGEBITS); 478 } 479 480 if ((gid != (gid_t)-1 && gid != to_sb.st_gid) || 481 (uid != (uid_t)-1 && uid != to_sb.st_uid)) 482 if (fchown(to_fd, uid, gid) == -1) { 483 serrno = errno; 484 (void)unlink(to_name); 485 errno = serrno; 486 err(EX_OSERR,"%s: chown/chgrp", to_name); 487 } 488 489 if (mode != (to_sb.st_mode & ALLPERMS)) 490 if (fchmod(to_fd, mode)) { 491 serrno = errno; 492 (void)unlink(to_name); 493 errno = serrno; 494 err(EX_OSERR, "%s: chmod", to_name); 495 } 496 497 /* 498 * If provided a set of flags, set them, otherwise, preserve the 499 * flags, except for the dump flag. 500 * NFS does not support flags. Ignore EOPNOTSUPP flags if we're just 501 * trying to turn off UF_NODUMP. If we're trying to set real flags, 502 * then warn if the fs doesn't support it, otherwise fail. 503 */ 504 if (!devnull && (flags & SETFLAGS || 505 (from_sb.st_flags & ~UF_NODUMP) != to_sb.st_flags) && 506 fchflags(to_fd, 507 flags & SETFLAGS ? fset : from_sb.st_flags & ~UF_NODUMP)) { 508 if (flags & SETFLAGS) { 509 if (errno == EOPNOTSUPP) 510 warn("%s: chflags", to_name); 511 else { 512 serrno = errno; 513 (void)unlink(to_name); 514 errno = serrno; 515 err(EX_OSERR, "%s: chflags", to_name); 516 } 517 } 518 } 519 520 (void)close(to_fd); 521 if (!devnull) 522 (void)close(from_fd); 523} 524 525/* 526 * compare -- 527 * compare two files; non-zero means files differ 528 */ 529static int 530compare(int from_fd, const char *from_name __unused, size_t from_len, 531 int to_fd, const char *to_name __unused, size_t to_len) 532{ 533 char *p, *q; 534 int rv; 535 int done_compare; 536 537 rv = 0; 538 if (from_len != to_len) 539 return 1; 540 541 if (from_len <= MAX_CMP_SIZE) { 542 done_compare = 0; 543 if (trymmap(from_fd) && trymmap(to_fd)) { 544 p = mmap(NULL, from_len, PROT_READ, MAP_SHARED, from_fd, (off_t)0); 545 if (p == (char *)MAP_FAILED) 546 goto out; 547 q = mmap(NULL, from_len, PROT_READ, MAP_SHARED, to_fd, (off_t)0); 548 if (q == (char *)MAP_FAILED) { 549 munmap(p, from_len); 550 goto out; 551 } 552 553 rv = memcmp(p, q, from_len); 554 munmap(p, from_len); 555 munmap(q, from_len); 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 * create_tempfile -- 591 * create a temporary file based on path and open it 592 */ 593static int 594create_tempfile(const char *path, char *temp, size_t tsize) 595{ 596 char *p; 597 598 (void)strncpy(temp, path, tsize); 599 temp[tsize - 1] = '\0'; 600 if ((p = strrchr(temp, '/')) != NULL) 601 p++; 602 else 603 p = temp; 604 (void)strncpy(p, "INS@XXXX", &temp[tsize - 1] - p); 605 temp[tsize - 1] = '\0'; 606 return (mkstemp(temp)); 607} 608 609/* 610 * create_newfile -- 611 * create a new file, overwriting an existing one if necessary 612 */ 613static int 614create_newfile(const char *path, int target, struct stat *sbp) 615{ 616 char backup[MAXPATHLEN]; 617 int saved_errno = 0; 618 int newfd; 619 620 if (target) { 621 /* 622 * Unlink now... avoid ETXTBSY errors later. Try to turn 623 * off the append/immutable bits -- if we fail, go ahead, 624 * it might work. 625 */ 626 if (sbp->st_flags & NOCHANGEBITS) 627 (void)chflags(path, sbp->st_flags & ~NOCHANGEBITS); 628 629 if (dobackup) { 630 if ((size_t)snprintf(backup, MAXPATHLEN, "%s%s", 631 path, suffix) != strlen(path) + strlen(suffix)) 632 errx(EX_OSERR, "%s: backup filename too long", 633 path); 634 (void)snprintf(backup, MAXPATHLEN, "%s%s", 635 path, suffix); 636 if (verbose) 637 (void)printf("install: %s -> %s\n", 638 path, backup); 639 if (rename(path, backup) < 0) 640 err(EX_OSERR, "rename: %s to %s", path, backup); 641 } else 642 if (unlink(path) < 0) 643 saved_errno = errno; 644 } 645 646 newfd = open(path, O_CREAT | O_RDWR | O_TRUNC, S_IRUSR | S_IWUSR); 647 if (newfd < 0 && saved_errno != 0) 648 errno = saved_errno; 649 return newfd; 650} 651 652/* 653 * copy -- 654 * copy from one file to another 655 */ 656static void 657copy(int from_fd, const char *from_name, int to_fd, const char *to_name, 658 off_t size) 659{ 660 int nr, nw; 661 int serrno; 662 char *p, buf[MAXBSIZE]; 663 int done_copy; 664 665 /* Rewind file descriptors. */ 666 if (lseek(from_fd, (off_t)0, SEEK_SET) == (off_t)-1) 667 err(EX_OSERR, "lseek: %s", from_name); 668 if (lseek(to_fd, (off_t)0, SEEK_SET) == (off_t)-1) 669 err(EX_OSERR, "lseek: %s", to_name); 670 671 /* 672 * Mmap and write if less than 8M (the limit is so we don't totally 673 * trash memory on big files. This is really a minor hack, but it 674 * wins some CPU back. 675 */ 676 done_copy = 0; 677 if (size <= 8 * 1048576 && trymmap(from_fd) && 678 (p = mmap(NULL, (size_t)size, PROT_READ, MAP_SHARED, 679 from_fd, (off_t)0)) != (char *)MAP_FAILED) { 680 nw = write(to_fd, p, size); 681 if (nw != size) { 682 serrno = errno; 683 (void)unlink(to_name); 684 if (nw >= 0) { 685 errx(EX_OSERR, 686 "short write to %s: %jd bytes written, %jd bytes asked to write", 687 to_name, (uintmax_t)nw, (uintmax_t)size); 688 } else { 689 errno = serrno; 690 err(EX_OSERR, "%s", to_name); 691 } 692 } 693 done_copy = 1; 694 } 695 if (!done_copy) { 696 while ((nr = read(from_fd, buf, sizeof(buf))) > 0) 697 if ((nw = write(to_fd, buf, nr)) != nr) { 698 serrno = errno; 699 (void)unlink(to_name); 700 if (nw >= 0) { 701 errx(EX_OSERR, 702 "short write to %s: %jd bytes written, %jd bytes asked to write", 703 to_name, (uintmax_t)nw, 704 (uintmax_t)size); 705 } else { 706 errno = serrno; 707 err(EX_OSERR, "%s", to_name); 708 } 709 } 710 if (nr != 0) { 711 serrno = errno; 712 (void)unlink(to_name); 713 errno = serrno; 714 err(EX_OSERR, "%s", from_name); 715 } 716 } 717} 718 719/* 720 * strip -- 721 * use strip(1) to strip the target file 722 */ 723static void 724strip(const char *to_name) 725{ 726 const char *stripbin; 727 int serrno, status; 728 729 switch (fork()) { 730 case -1: 731 serrno = errno; 732 (void)unlink(to_name); 733 errno = serrno; 734 err(EX_TEMPFAIL, "fork"); 735 case 0: 736 stripbin = getenv("STRIPBIN"); 737 if (stripbin == NULL) 738 stripbin = "strip"; 739 execlp(stripbin, stripbin, to_name, (char *)NULL); 740 err(EX_OSERR, "exec(%s)", stripbin); 741 default: 742 if (wait(&status) == -1 || status) { 743 serrno = errno; 744 (void)unlink(to_name); 745 errc(EX_SOFTWARE, serrno, "wait"); 746 /* NOTREACHED */ 747 } 748 } 749} 750 751/* 752 * install_dir -- 753 * build directory hierarchy 754 */ 755static void 756install_dir(char *path) 757{ 758 char *p; 759 struct stat sb; 760 int ch; 761 762 for (p = path;; ++p) 763 if (!*p || (p != path && *p == '/')) { 764 ch = *p; 765 *p = '\0'; 766 if (stat(path, &sb)) { 767 if (errno != ENOENT || mkdir(path, 0755) < 0) { 768 err(EX_OSERR, "mkdir %s", path); 769 /* NOTREACHED */ 770 } else if (verbose) 771 (void)printf("install: mkdir %s\n", 772 path); 773 } else if (!S_ISDIR(sb.st_mode)) 774 errx(EX_OSERR, "%s exists but is not a directory", path); 775 if (!(*p = ch)) 776 break; 777 } 778 779 if ((gid != (gid_t)-1 || uid != (uid_t)-1) && chown(path, uid, gid)) 780 warn("chown %u:%u %s", uid, gid, path); 781 if (chmod(path, mode)) 782 warn("chmod %o %s", mode, path); 783} 784 785/* 786 * usage -- 787 * print a usage message and die 788 */ 789static void 790usage(void) 791{ 792 (void)fprintf(stderr, 793"usage: install [-bCcMpSsv] [-B suffix] [-f flags] [-g group] [-m mode]\n" 794" [-N dbdir] [-o owner] file1 file2\n" 795" install [-bCcMpSsv] [-B suffix] [-f flags] [-g group] [-m mode]\n" 796" [-N dbdir] [-o owner] file1 ... fileN directory\n" 797" install -d [-v] [-g group] [-m mode] [-N dbdir] [-o owner]\n" 798" directory ...\n"); 799 exit(EX_USAGE); 800 /* NOTREACHED */ 801} 802 803/* 804 * trymmap -- 805 * return true (1) if mmap should be tried, false (0) if not. 806 */ 807static int 808trymmap(int fd) 809{ 810/* 811 * The ifdef is for bootstrapping - f_fstypename doesn't exist in 812 * pre-Lite2-merge systems. 813 */ 814#ifdef MFSNAMELEN 815 struct statfs stfs; 816 817 if (nommap || fstatfs(fd, &stfs) != 0) 818 return (0); 819 if (strcmp(stfs.f_fstypename, "ufs") == 0 || 820 strcmp(stfs.f_fstypename, "cd9660") == 0) 821 return (1); 822#endif 823 return (0); 824} 825