xinstall.c revision 1.60
1 /* $NetBSD: xinstall.c,v 1.60 2001/11/22 23:27:38 dillo Exp $ */ 2 3 /* 4 * Copyright (c) 1987, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 #ifndef lint 38 __COPYRIGHT("@(#) Copyright (c) 1987, 1993\n\ 39 The Regents of the University of California. All rights reserved.\n"); 40 #endif /* not lint */ 41 42 #ifndef lint 43 #if 0 44 static char sccsid[] = "@(#)xinstall.c 8.1 (Berkeley) 7/21/93"; 45 #else 46 __RCSID("$NetBSD: xinstall.c,v 1.60 2001/11/22 23:27:38 dillo Exp $"); 47 #endif 48 #endif /* not lint */ 49 50 #include <sys/param.h> 51 #include <sys/wait.h> 52 #include <sys/mman.h> 53 #include <sys/stat.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 <unistd.h> 66 #include <vis.h> 67 68 #include "pathnames.h" 69 #include "stat_flags.h" 70 71 #define STRIP_ARGS_MAX 32 72 #define BACKUP_SUFFIX ".old" 73 74 int dobackup, docopy, dodir, dostrip, dolink, dopreserve, dorename, 75 dounpriv; 76 int numberedbackup; 77 int mode = S_IRWXU|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH; 78 char pathbuf[MAXPATHLEN]; 79 uid_t uid; 80 gid_t gid; 81 char *group, *owner, *fflags, *tags; 82 FILE *metafp; 83 char *metafile; 84 u_long fileflags; 85 char *stripArgs; 86 char *suffix = BACKUP_SUFFIX; 87 88 #define LN_ABSOLUTE 0x01 89 #define LN_RELATIVE 0x02 90 #define LN_HARD 0x04 91 #define LN_SYMBOLIC 0x08 92 #define LN_MIXED 0x10 93 94 #define DIRECTORY 0x01 /* Tell install it's a directory. */ 95 #define SETFLAGS 0x02 /* Tell install to set flags. */ 96 #define HASUID 0x04 /* Tell install the uid was given */ 97 #define HASGID 0x08 /* Tell install the gid was given */ 98 99 void backup(const char *); 100 void copy(int, char *, int, char *, off_t); 101 void install(char *, char *, u_int); 102 void install_dir(char *, u_int); 103 int main(int, char *[]); 104 void makelink(char *, char *); 105 int parseid(char *, id_t *); 106 void strip(char *); 107 void metadata_log(const char *, const char *, struct timeval *, const char *); 108 void usage(void); 109 110 int 111 main(int argc, char *argv[]) 112 { 113 struct stat from_sb, to_sb; 114 void *set; 115 u_int iflags; 116 int ch, no_target; 117 char *p, *to_name; 118 119 setprogname(argv[0]); 120 121 iflags = 0; 122 while ((ch = getopt(argc, argv, "cbB:df:g:l:m:M:o:prsS:T:U")) != -1) 123 switch((char)ch) { 124 case 'B': 125 suffix = optarg; 126 numberedbackup = 0; 127 { 128 /* Check if given suffix really generates 129 different suffixes - catch e.g. ".%" */ 130 char suffix_expanded0[FILENAME_MAX], 131 suffix_expanded1[FILENAME_MAX]; 132 (void)snprintf(suffix_expanded0, FILENAME_MAX, 133 suffix, 0); 134 (void)snprintf(suffix_expanded1, FILENAME_MAX, 135 suffix, 1); 136 if (strcmp(suffix_expanded0, suffix_expanded1) 137 != 0) 138 numberedbackup = 1; 139 } 140 /* fall through; -B implies -b */ 141 case 'b': 142 dobackup = 1; 143 break; 144 case 'c': 145 docopy = 1; 146 break; 147 case 'd': 148 dodir = 1; 149 break; 150 case 'f': 151 fflags = optarg; 152 break; 153 case 'g': 154 group = optarg; 155 break; 156 case 'l': 157 for (p = optarg; *p; p++) 158 switch (*p) { 159 case 's': 160 dolink &= ~(LN_HARD|LN_MIXED); 161 dolink |= LN_SYMBOLIC; 162 break; 163 case 'h': 164 dolink &= ~(LN_SYMBOLIC|LN_MIXED); 165 dolink |= LN_HARD; 166 break; 167 case 'm': 168 dolink &= ~(LN_SYMBOLIC|LN_HARD); 169 dolink |= LN_MIXED; 170 break; 171 case 'a': 172 dolink &= ~LN_RELATIVE; 173 dolink |= LN_ABSOLUTE; 174 break; 175 case 'r': 176 dolink &= ~LN_ABSOLUTE; 177 dolink |= LN_RELATIVE; 178 break; 179 default: 180 errx(1, "%c: invalid link type", *p); 181 break; 182 } 183 break; 184 case 'm': 185 if (!(set = setmode(optarg))) 186 errx(1, "%s: invalid file mode", optarg); 187 mode = getmode(set, 0); 188 free(set); 189 break; 190 case 'M': 191 metafile = optarg; 192 break; 193 case 'o': 194 owner = optarg; 195 break; 196 case 'p': 197 dopreserve = 1; 198 break; 199 case 'r': 200 dorename = 1; 201 break; 202 case 'S': 203 stripArgs = strdup(optarg); 204 if (stripArgs == NULL) 205 errx(1, "%s", strerror(ENOMEM)); 206 /* fall through; -S implies -s */ 207 case 's': 208 dostrip = 1; 209 break; 210 case 'T': 211 tags = optarg; 212 break; 213 case 'U': 214 dounpriv = 1; 215 break; 216 case '?': 217 default: 218 usage(); 219 } 220 argc -= optind; 221 argv += optind; 222 223 /* strip and link options make no sense when creating directories */ 224 if ((dostrip || dolink) && dodir) 225 usage(); 226 227 /* strip and flags make no sense with links */ 228 if ((dostrip || fflags) && dolink) 229 usage(); 230 231 /* must have at least two arguments, except when creating directories */ 232 if (argc < 2 && !dodir) 233 usage(); 234 235 /* get group and owner id's */ 236 if (group && !dounpriv) { 237 struct group *gp; 238 239 if ((gp = getgrnam(group)) != NULL) 240 gid = gp->gr_gid; 241 else if (! parseid(group, &gid)) 242 errx(1, "unknown group %s", group); 243 iflags |= HASGID; 244 } 245 if (owner && !dounpriv) { 246 struct passwd *pp; 247 248 if ((pp = getpwnam(owner)) != NULL) 249 uid = pp->pw_uid; 250 else if (! parseid(owner, &uid)) 251 errx(1, "unknown user %s", owner); 252 iflags |= HASUID; 253 } 254 255 if (fflags && !dounpriv) { 256 if (string_to_flags(&fflags, &fileflags, NULL)) 257 errx(1, "%s: invalid flag", fflags); 258 iflags |= SETFLAGS; 259 } 260 261 if (metafile) { 262 if ((metafp = fopen(metafile, "a")) == NULL) 263 warn("open %s", metafile); 264 } 265 266 if (dodir) { 267 for (; *argv != NULL; ++argv) 268 install_dir(*argv, iflags); 269 exit (0); 270 } 271 272 no_target = stat(to_name = argv[argc - 1], &to_sb); 273 if (!no_target && S_ISDIR(to_sb.st_mode)) { 274 for (; *argv != to_name; ++argv) 275 install(*argv, to_name, iflags | DIRECTORY); 276 exit(0); 277 } 278 279 /* can't do file1 file2 directory/file */ 280 if (argc != 2) 281 usage(); 282 283 if (!no_target) { 284 if (stat(*argv, &from_sb)) 285 err(1, "%s", *argv); 286 if (!S_ISREG(to_sb.st_mode)) 287 errx(1, "%s: not a regular file", to_name); 288 if (!dolink && to_sb.st_dev == from_sb.st_dev && 289 to_sb.st_ino == from_sb.st_ino) 290 errx(1, "%s and %s are the same file", *argv, to_name); 291 /* 292 * Unlink now... avoid ETXTBSY errors later. Try and turn 293 * off the append/immutable bits -- if we fail, go ahead, 294 * it might work. 295 */ 296 #define NOCHANGEBITS (UF_IMMUTABLE | UF_APPEND | SF_IMMUTABLE | SF_APPEND) 297 if (to_sb.st_flags & NOCHANGEBITS) 298 (void)chflags(to_name, 299 to_sb.st_flags & ~(NOCHANGEBITS)); 300 if (dobackup) 301 backup(to_name); 302 else if (!dorename) 303 (void)unlink(to_name); 304 } 305 install(*argv, to_name, iflags); 306 exit(0); 307 } 308 309 /* 310 * parseid -- 311 * parse uid or gid from arg into id, returning non-zero if successful 312 */ 313 int 314 parseid(char *name, id_t *id) 315 { 316 char *ep; 317 318 errno = 0; 319 *id = (id_t)strtoul(name, &ep, 10); 320 if (errno || *ep != '\0') 321 return (0); 322 return (1); 323 } 324 325 /* 326 * makelink -- 327 * make a link from source to destination 328 */ 329 void 330 makelink(char *from_name, char *to_name) 331 { 332 char src[MAXPATHLEN], dst[MAXPATHLEN], lnk[MAXPATHLEN]; 333 334 /* Try hard links first */ 335 if (dolink & (LN_HARD|LN_MIXED)) { 336 if (link(from_name, to_name) == -1) { 337 if ((dolink & LN_HARD) || errno != EXDEV) 338 err(1, "link %s -> %s", from_name, to_name); 339 } 340 else { 341 metadata_log(to_name, "hlink", NULL, from_name); 342 return; 343 } 344 } 345 346 /* Symbolic links */ 347 if (dolink & LN_ABSOLUTE) { 348 /* Convert source path to absolute */ 349 if (realpath(from_name, src) == NULL) 350 err(1, "%s", src); 351 if (symlink(src, to_name) == -1) 352 err(1, "symlink %s -> %s", src, to_name); 353 metadata_log(to_name, "link", NULL, src); 354 return; 355 } 356 357 if (dolink & LN_RELATIVE) { 358 char *s, *d; 359 360 /* Resolve pathnames */ 361 if (realpath(from_name, src) == NULL) 362 err(1, "%s", src); 363 if (realpath(to_name, dst) == NULL) 364 err(1, "%s", dst); 365 366 /* trim common path components */ 367 for (s = src, d = dst; *s == *d; s++, d++) 368 continue; 369 while (*s != '/') 370 s--, d--; 371 372 /* count the number of directories we need to backtrack */ 373 for (++d, lnk[0] = '\0'; *d; d++) 374 if (*d == '/') 375 (void) strcat(lnk, "../"); 376 377 (void) strcat(lnk, ++s); 378 379 if (symlink(lnk, dst) == -1) 380 err(1, "symlink %s -> %s", lnk, dst); 381 metadata_log(dst, "link", NULL, lnk); 382 return; 383 } 384 385 /* 386 * If absolute or relative was not specified, 387 * try the names the user provided 388 */ 389 if (symlink(from_name, to_name) == -1) 390 err(1, "symlink %s -> %s", from_name, to_name); 391 metadata_log(to_name, "link", NULL, from_name); 392 } 393 394 /* 395 * install -- 396 * build a path name and install the file 397 */ 398 void 399 install(char *from_name, char *to_name, u_int flags) 400 { 401 struct stat from_sb, to_sb; 402 struct timeval tv[2]; 403 int devnull, from_fd, to_fd, serrno, tmpmode; 404 char *p, tmpl[MAXPATHLEN], *oto_name; 405 406 if (flags & DIRECTORY || strcmp(from_name, _PATH_DEVNULL)) { 407 if (!dolink) { 408 if (stat(from_name, &from_sb)) 409 err(1, "%s", from_name); 410 if (!S_ISREG(from_sb.st_mode)) 411 errx(1, "%s: not a regular file", from_name); 412 } 413 /* Build the target path. */ 414 if (flags & DIRECTORY) { 415 (void)snprintf(pathbuf, sizeof(pathbuf), "%s/%s", 416 to_name, 417 (p = strrchr(from_name, '/')) ? ++p : from_name); 418 to_name = pathbuf; 419 } 420 devnull = 0; 421 } else { 422 from_sb.st_flags = 0; /* XXX */ 423 devnull = 1; 424 } 425 426 /* 427 * Unlink now... avoid ETXTBSY errors later. Try and turn 428 * off the append/immutable bits -- if we fail, go ahead, 429 * it might work. 430 */ 431 if (stat(to_name, &to_sb) == 0 && 432 to_sb.st_flags & (NOCHANGEBITS)) 433 (void)chflags(to_name, to_sb.st_flags & ~(NOCHANGEBITS)); 434 if (dorename) { 435 char *ptr, c, *dir; 436 437 if ((ptr = strrchr(to_name, '/')) != NULL) { 438 c = *++ptr; 439 *ptr = '\0'; 440 dir = to_name; 441 } else { 442 c = '\0'; /* pacify gcc */ 443 dir = tmpl; 444 *dir = '\0'; 445 } 446 (void)snprintf(tmpl, sizeof(tmpl), "%sinst.XXXXXX", dir); 447 if (ptr) 448 *ptr = c; 449 oto_name = to_name; 450 to_name = tmpl; 451 452 } else { 453 oto_name = NULL; /* pacify gcc */ 454 if (dobackup) 455 backup(to_name); 456 else 457 (void)unlink(to_name); 458 } 459 460 if (dolink) { 461 makelink(from_name, to_name); 462 return; 463 } 464 465 /* Create target. */ 466 if (dorename) { 467 if ((to_fd = mkstemp(to_name)) == -1) 468 err(1, "%s", to_name); 469 } else { 470 if ((to_fd = open(to_name, 471 O_CREAT | O_WRONLY | O_TRUNC, S_IRUSR | S_IWUSR)) < 0) 472 err(1, "%s", to_name); 473 } 474 if (!devnull) { 475 if ((from_fd = open(from_name, O_RDONLY, 0)) < 0) { 476 (void)unlink(to_name); 477 err(1, "%s", from_name); 478 } 479 copy(from_fd, from_name, to_fd, to_name, from_sb.st_size); 480 (void)close(from_fd); 481 } 482 483 if (dostrip) { 484 strip(to_name); 485 486 /* 487 * Re-open our fd on the target, in case we used a strip 488 * that does not work in-place -- like gnu binutils strip. 489 */ 490 close(to_fd); 491 if ((to_fd = open(to_name, O_RDONLY, S_IRUSR | S_IWUSR)) < 0) 492 err(1, "stripping %s", to_name); 493 } 494 495 /* 496 * Set owner, group, mode for target; do the chown first, 497 * chown may lose the setuid bits. 498 */ 499 if (!dounpriv && 500 (flags & (HASUID | HASGID)) && fchown(to_fd, uid, gid) == -1) { 501 serrno = errno; 502 (void)unlink(to_name); 503 errx(1, "%s: chown/chgrp: %s", to_name, strerror(serrno)); 504 } 505 tmpmode = mode; 506 if (dounpriv) 507 tmpmode &= S_IRWXU|S_IRWXG|S_IRWXO; 508 if (fchmod(to_fd, tmpmode) == -1) { 509 serrno = errno; 510 (void)unlink(to_name); 511 errx(1, "%s: chmod: %s", to_name, strerror(serrno)); 512 } 513 514 /* 515 * Preserve the date of the source file. 516 */ 517 if (dopreserve) { 518 #ifdef BSD4_4 519 TIMESPEC_TO_TIMEVAL(&tv[0], &from_sb.st_atimespec); 520 TIMESPEC_TO_TIMEVAL(&tv[1], &from_sb.st_mtimespec); 521 #else 522 tv[0].tv_sec = from_sb.st_atime; 523 tv[0].tv_usec = 0; 524 tv[1].tv_sec = from_sb.st_mtime; 525 tv[1].tv_usec = 0; 526 #endif 527 if (!dounpriv && futimes(to_fd, tv) == -1) 528 warn("%s: futimes", to_name); 529 } 530 531 (void)close(to_fd); 532 533 if (dorename) { 534 if (rename(to_name, oto_name) == -1) 535 err(1, "%s: rename", to_name); 536 to_name = oto_name; 537 } 538 539 if (!docopy && !devnull && unlink(from_name)) 540 err(1, "%s", from_name); 541 542 /* 543 * If provided a set of flags, set them, otherwise, preserve the 544 * flags, except for the dump flag. 545 */ 546 if (!dounpriv && chflags(to_name, 547 flags & SETFLAGS ? fileflags : from_sb.st_flags & ~UF_NODUMP) == -1) 548 { 549 if (errno != EOPNOTSUPP || (from_sb.st_flags & ~UF_NODUMP) != 0) 550 warn("%s: chflags", to_name); 551 } 552 553 metadata_log(to_name, "file", tv, NULL); 554 } 555 556 /* 557 * copy -- 558 * copy from one file to another 559 */ 560 void 561 copy(int from_fd, char *from_name, int to_fd, char *to_name, off_t size) 562 { 563 ssize_t nr, nw; 564 int serrno; 565 char *p; 566 char buf[MAXBSIZE]; 567 568 /* 569 * There's no reason to do anything other than close the file 570 * now if it's empty, so let's not bother. 571 */ 572 if (size > 0) { 573 574 /* 575 * Mmap and write if less than 8M (the limit is so we 576 * don't totally trash memory on big files). This is 577 * really a minor hack, but it wins some CPU back. 578 */ 579 580 if (size <= 8 * 1048576) { 581 if ((p = mmap(NULL, (size_t)size, PROT_READ, 582 MAP_FILE|MAP_SHARED, from_fd, (off_t)0)) 583 == MAP_FAILED) { 584 goto mmap_failed; 585 } 586 #ifdef MADV_SEQUENTIAL 587 if (madvise(p, (size_t)size, MADV_SEQUENTIAL) == -1 588 && errno != EOPNOTSUPP) 589 warnx("madvise: %s", strerror(errno)); 590 #endif 591 592 if (write(to_fd, p, size) != size) { 593 serrno = errno; 594 (void)unlink(to_name); 595 errx(1, "%s: %s", 596 to_name, strerror(serrno)); 597 } 598 } else { 599 mmap_failed: 600 while ((nr = read(from_fd, buf, sizeof(buf))) > 0) { 601 if ((nw = write(to_fd, buf, nr)) != nr) { 602 serrno = errno; 603 (void)unlink(to_name); 604 errx(1, "%s: %s", to_name, 605 strerror(nw > 0 ? EIO : serrno)); 606 } 607 } 608 if (nr != 0) { 609 serrno = errno; 610 (void)unlink(to_name); 611 errx(1, "%s: %s", from_name, strerror(serrno)); 612 } 613 } 614 } 615 } 616 617 /* 618 * strip -- 619 * use strip(1) to strip the target file 620 */ 621 void 622 strip(char *to_name) 623 { 624 int serrno, status; 625 char *stripprog; 626 627 switch (vfork()) { 628 case -1: 629 serrno = errno; 630 (void)unlink(to_name); 631 errx(1, "vfork: %s", strerror(serrno)); 632 case 0: 633 stripprog = getenv("STRIP"); 634 if (stripprog == NULL) 635 stripprog = _PATH_STRIP; 636 637 if (stripArgs) { 638 /* 639 * build up a command line and let /bin/sh 640 * parse the arguments 641 */ 642 char* cmd = (char*)malloc(sizeof(char)* 643 (3+strlen(stripprog)+ 644 strlen(stripArgs)+ 645 strlen(to_name))); 646 647 if (cmd == NULL) 648 errx(1, "%s", strerror(ENOMEM)); 649 650 sprintf(cmd, "%s %s %s", stripprog, stripArgs, to_name); 651 652 execl(_PATH_BSHELL, "sh", "-c", cmd, NULL); 653 } else 654 execlp(stripprog, "strip", to_name, NULL); 655 656 warn("%s", stripprog); 657 _exit(1); 658 default: 659 if (wait(&status) == -1 || status) 660 (void)unlink(to_name); 661 } 662 } 663 664 /* 665 * backup file "to_name" to to_name.suffix 666 * if suffix contains a "%", it's taken as a printf(3) pattern 667 * used for a numbered backup. 668 */ 669 void 670 backup(const char *to_name) 671 { 672 char backup[FILENAME_MAX]; 673 674 if (numberedbackup) { 675 /* Do numbered backup */ 676 int cnt; 677 char suffix_expanded[FILENAME_MAX]; 678 679 cnt=0; 680 do { 681 (void)snprintf(suffix_expanded, FILENAME_MAX, suffix, 682 cnt); 683 (void)snprintf(backup, FILENAME_MAX, "%s%s", 684 to_name, suffix_expanded); 685 cnt++; 686 } while (access(backup, F_OK)==0); 687 } else { 688 /* Do simple backup */ 689 (void)snprintf(backup, FILENAME_MAX, "%s%s", to_name, suffix); 690 } 691 692 (void)rename(to_name, backup); 693 } 694 695 /* 696 * install_dir -- 697 * build directory hierarchy 698 */ 699 void 700 install_dir(char *path, u_int flags) 701 { 702 char *p; 703 struct stat sb; 704 int ch; 705 706 for (p = path;; ++p) 707 if (!*p || (p != path && *p == '/')) { 708 ch = *p; 709 *p = '\0'; 710 if (stat(path, &sb)) { 711 if (errno != ENOENT || mkdir(path, 0777) < 0) { 712 err(1, "%s", path); 713 /* NOTREACHED */ 714 } 715 } 716 if (!(*p = ch)) 717 break; 718 } 719 720 if (!dounpriv && ( 721 ((flags & (HASUID | HASGID)) && chown(path, uid, gid) == -1) 722 || chmod(path, mode) == -1 )) { 723 warn("%s", path); 724 } 725 metadata_log(path, "dir", NULL, NULL); 726 } 727 728 /* 729 * metadata_log -- 730 * if metafp is not NULL, output mtree(8) full path name and settings to 731 * metafp, to allow permissions to be set correctly by other tools. 732 */ 733 void 734 metadata_log(const char *path, const char *type, struct timeval *tv, 735 const char *link) 736 { 737 const char extra[] = { ' ', '\t', '\n', '\\', '#', '\0' }; 738 char *buf; 739 740 if (!metafp) 741 return; 742 buf = (char *)malloc(4 * strlen(path) + 1); /* buf for strsvis(3) */ 743 if (buf == NULL) { 744 warnx("%s", strerror(ENOMEM)); 745 return; 746 } 747 if (flock(fileno(metafp), LOCK_EX) == -1) { /* lock log file */ 748 warn("can't lock %s", metafile); 749 return; 750 } 751 752 strsvis(buf, path, VIS_CSTYLE, extra); /* encode name */ 753 fprintf(metafp, ".%s%s type=%s mode=%#o", /* print details */ 754 buf[0] == '/' ? "" : "/", buf, type, mode); 755 if (link) 756 fprintf(metafp, " link=%s", link); 757 if (owner) 758 fprintf(metafp, " uname=%s", owner); 759 if (group) 760 fprintf(metafp, " gname=%s", group); 761 if (fflags) 762 fprintf(metafp, " flags=%s", fflags); 763 if (tags) 764 fprintf(metafp, " tags=%s", tags); 765 if (tv != NULL && dopreserve) 766 fprintf(metafp, " time=%ld.%ld", tv[1].tv_sec, tv[1].tv_usec); 767 fputc('\n', metafp); 768 fflush(metafp); /* flush output */ 769 if (flock(fileno(metafp), LOCK_UN) == -1) { /* unlock log file */ 770 warn("can't unlock %s", metafile); 771 } 772 free(buf); 773 } 774 775 776 777 /* 778 * usage -- 779 * print a usage message and die 780 */ 781 void 782 usage(void) 783 { 784 785 (void)fprintf(stderr, "\ 786 usage: install [-Ubcprs] [-M log] [-T tags] [-B suffix] [-f flags] [-m mode]\n\ 787 [-o owner] [-g group] [-l linkflags] [-S stripflags] file1 file2\n\ 788 install [-Ubcprs] [-M log] [-T tags] [-B suffix] [-f flags] [-m mode]\n\ 789 [-o owner] [-g group] [-l linkflags] [-S stripflags]\n\ 790 file1 ... fileN directory\n\ 791 install [-Up] [-M log] [-T tags] -d [-m mode]\n\ 792 [-o owner] [-g group] directory ...\n"); 793 exit(1); 794 } 795
Indexes created Mon Sep 29 21:09:56 GMT 2025