xinstall.c revision 1.61
1 /* $NetBSD: xinstall.c,v 1.61 2001/11/23 16:14:51 simonb 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 1.61 2001/11/23 16:14:51 simonb Exp $"); 47 #endif 48 #endif /* not lint */ 49 50 #include <sys/param.h> 51 #include <sys/mman.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 <libgen.h> 61 #include <paths.h> 62 #include <pwd.h> 63 #include <stdio.h> 64 #include <stdlib.h> 65 #include <string.h> 66 #include <unistd.h> 67 #include <vis.h> 68 69 #include "pathnames.h" 70 #include "stat_flags.h" 71 72 #define STRIP_ARGS_MAX 32 73 #define BACKUP_SUFFIX ".old" 74 75 int dobackup, docopy, dodir, dostrip, dolink, dopreserve, dorename, 76 dounpriv; 77 int numberedbackup; 78 int mode = S_IRWXU|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH; 79 char pathbuf[MAXPATHLEN]; 80 uid_t uid; 81 gid_t gid; 82 char *group, *owner, *fflags, *tags; 83 FILE *metafp; 84 char *metafile; 85 u_long fileflags; 86 char *stripArgs; 87 char *suffix = BACKUP_SUFFIX; 88 89 #define LN_ABSOLUTE 0x01 90 #define LN_RELATIVE 0x02 91 #define LN_HARD 0x04 92 #define LN_SYMBOLIC 0x08 93 #define LN_MIXED 0x10 94 95 #define DIRECTORY 0x01 /* Tell install it's a directory. */ 96 #define SETFLAGS 0x02 /* Tell install to set flags. */ 97 #define HASUID 0x04 /* Tell install the uid was given */ 98 #define HASGID 0x08 /* Tell install the gid was given */ 99 100 void backup(const char *); 101 void copy(int, char *, int, char *, off_t); 102 int do_link(char *, char *); 103 void do_symlink(char *, char *); 104 void install(char *, char *, u_int); 105 void install_dir(char *, u_int); 106 int main(int, char *[]); 107 void makelink(char *, char *); 108 void metadata_log(const char *, const char *, struct timeval *, const char *); 109 int parseid(char *, id_t *); 110 void strip(char *); 111 void usage(void); 112 char *xbasename(char *); 113 char *xdirname(char *); 114 115 int 116 main(int argc, char *argv[]) 117 { 118 struct stat from_sb, to_sb; 119 void *set; 120 u_int iflags; 121 int ch, no_target; 122 char *p, *to_name; 123 124 setprogname(argv[0]); 125 126 iflags = 0; 127 while ((ch = getopt(argc, argv, "cbB:df:g:l:m:M:o:prsS:T:U")) != -1) 128 switch((char)ch) { 129 case 'B': 130 suffix = optarg; 131 numberedbackup = 0; 132 { 133 /* Check if given suffix really generates 134 different suffixes - catch e.g. ".%" */ 135 char suffix_expanded0[FILENAME_MAX], 136 suffix_expanded1[FILENAME_MAX]; 137 (void)snprintf(suffix_expanded0, FILENAME_MAX, 138 suffix, 0); 139 (void)snprintf(suffix_expanded1, FILENAME_MAX, 140 suffix, 1); 141 if (strcmp(suffix_expanded0, suffix_expanded1) 142 != 0) 143 numberedbackup = 1; 144 } 145 /* fall through; -B implies -b */ 146 /*FALLTHROUGH*/ 147 case 'b': 148 dobackup = 1; 149 break; 150 case 'c': 151 docopy = 1; 152 break; 153 case 'd': 154 dodir = 1; 155 break; 156 case 'f': 157 fflags = optarg; 158 break; 159 case 'g': 160 group = optarg; 161 break; 162 case 'l': 163 for (p = optarg; *p; p++) 164 switch (*p) { 165 case 's': 166 dolink &= ~(LN_HARD|LN_MIXED); 167 dolink |= LN_SYMBOLIC; 168 break; 169 case 'h': 170 dolink &= ~(LN_SYMBOLIC|LN_MIXED); 171 dolink |= LN_HARD; 172 break; 173 case 'm': 174 dolink &= ~(LN_SYMBOLIC|LN_HARD); 175 dolink |= LN_MIXED; 176 break; 177 case 'a': 178 dolink &= ~LN_RELATIVE; 179 dolink |= LN_ABSOLUTE; 180 break; 181 case 'r': 182 dolink &= ~LN_ABSOLUTE; 183 dolink |= LN_RELATIVE; 184 break; 185 default: 186 errx(1, "%c: invalid link type", *p); 187 /* NOTREACHED */ 188 } 189 break; 190 case 'm': 191 if (!(set = setmode(optarg))) 192 errx(1, "%s: invalid file mode", optarg); 193 mode = getmode(set, 0); 194 free(set); 195 break; 196 case 'M': 197 metafile = optarg; 198 break; 199 case 'o': 200 owner = optarg; 201 break; 202 case 'p': 203 dopreserve = 1; 204 break; 205 case 'r': 206 dorename = 1; 207 break; 208 case 'S': 209 stripArgs = strdup(optarg); 210 if (stripArgs == NULL) 211 errx(1, "%s", strerror(ENOMEM)); 212 /* fall through; -S implies -s */ 213 /*FALLTHROUGH*/ 214 case 's': 215 dostrip = 1; 216 break; 217 case 'T': 218 tags = optarg; 219 break; 220 case 'U': 221 dounpriv = 1; 222 break; 223 case '?': 224 default: 225 usage(); 226 } 227 argc -= optind; 228 argv += optind; 229 230 /* strip and link options make no sense when creating directories */ 231 if ((dostrip || dolink) && dodir) 232 usage(); 233 234 /* strip and flags make no sense with links */ 235 if ((dostrip || fflags) && dolink) 236 usage(); 237 238 /* must have at least two arguments, except when creating directories */ 239 if (argc < 2 && !dodir) 240 usage(); 241 242 /* get group and owner id's */ 243 if (group && !dounpriv) { 244 struct group *gp; 245 246 if ((gp = getgrnam(group)) != NULL) 247 gid = gp->gr_gid; 248 else if (! parseid(group, &gid)) 249 errx(1, "unknown group %s", group); 250 iflags |= HASGID; 251 } 252 if (owner && !dounpriv) { 253 struct passwd *pp; 254 255 if ((pp = getpwnam(owner)) != NULL) 256 uid = pp->pw_uid; 257 else if (! parseid(owner, &uid)) 258 errx(1, "unknown user %s", owner); 259 iflags |= HASUID; 260 } 261 262 if (fflags && !dounpriv) { 263 if (string_to_flags(&fflags, &fileflags, NULL)) 264 errx(1, "%s: invalid flag", fflags); 265 iflags |= SETFLAGS; 266 } 267 268 if (metafile) { 269 if ((metafp = fopen(metafile, "a")) == NULL) 270 warn("open %s", metafile); 271 } 272 273 if (dodir) { 274 for (; *argv != NULL; ++argv) 275 install_dir(*argv, iflags); 276 exit (0); 277 } 278 279 no_target = stat(to_name = argv[argc - 1], &to_sb); 280 if (!no_target && S_ISDIR(to_sb.st_mode)) { 281 for (; *argv != to_name; ++argv) 282 install(*argv, to_name, iflags | DIRECTORY); 283 exit(0); 284 } 285 286 /* can't do file1 file2 directory/file */ 287 if (argc != 2) 288 usage(); 289 290 if (!no_target) { 291 /* makelink() handles checks for links */ 292 if (!dolink) { 293 if (stat(*argv, &from_sb)) 294 err(1, "%s", *argv); 295 if (!S_ISREG(to_sb.st_mode)) 296 errx(1, "%s: not a regular file", to_name); 297 if (to_sb.st_dev == from_sb.st_dev && 298 to_sb.st_ino == from_sb.st_ino) 299 errx(1, "%s and %s are the same file", *argv, 300 to_name); 301 } 302 /* 303 * Unlink now... avoid ETXTBSY errors later. Try and turn 304 * off the append/immutable bits -- if we fail, go ahead, 305 * it might work. 306 */ 307 #define NOCHANGEBITS (UF_IMMUTABLE | UF_APPEND | SF_IMMUTABLE | SF_APPEND) 308 if (to_sb.st_flags & NOCHANGEBITS) 309 (void)chflags(to_name, 310 to_sb.st_flags & ~(NOCHANGEBITS)); 311 if (dobackup) 312 backup(to_name); 313 else if (!dorename) 314 (void)unlink(to_name); 315 } 316 install(*argv, to_name, iflags); 317 exit(0); 318 } 319 320 /* 321 * parseid -- 322 * parse uid or gid from arg into id, returning non-zero if successful 323 */ 324 int 325 parseid(char *name, id_t *id) 326 { 327 char *ep; 328 329 errno = 0; 330 *id = (id_t)strtoul(name, &ep, 10); 331 if (errno || *ep != '\0') 332 return (0); 333 return (1); 334 } 335 336 /* 337 * do_link -- 338 * make a hard link, obeying dorename if set 339 * return -1 on failure 340 */ 341 int 342 do_link(char *from_name, char *to_name) 343 { 344 char tmpl[MAXPATHLEN]; 345 int ret; 346 347 if (dorename) { 348 (void)snprintf(tmpl, sizeof(tmpl), "%s/inst.XXXXXX", 349 xdirname(to_name)); 350 if (mktemp(tmpl) == NULL) 351 err(1, "%s", tmpl); 352 ret = link(from_name, tmpl); 353 if (ret == 0) { 354 ret = rename(tmpl, to_name); 355 if (ret < 0) 356 /* remove temporary link before exiting */ 357 (void)unlink(tmpl); 358 } 359 return (ret); 360 } else 361 return (link(from_name, to_name)); 362 } 363 364 /* 365 * do_symlink -- 366 * make a symbolic link, obeying dorename if set 367 * exit on failure 368 */ 369 void 370 do_symlink(char *from_name, char *to_name) 371 { 372 char tmpl[MAXPATHLEN]; 373 374 if (dorename) { 375 (void)snprintf(tmpl, sizeof(tmpl), "%s/inst.XXXXXX", 376 xdirname(to_name)); 377 if (mktemp(tmpl) == NULL) 378 err(1, "%s", tmpl); 379 380 if (symlink(from_name, tmpl) == -1) 381 err(1, "symlink %s -> %s", from_name, tmpl); 382 if (rename(tmpl, to_name) == -1) { 383 /* remove temporary link before exiting */ 384 (void)unlink(tmpl); 385 err(1, "%s: rename", to_name); 386 } 387 } else { 388 if (symlink(from_name, to_name) == -1) 389 err(1, "symlink %s -> %s", from_name, to_name); 390 } 391 } 392 393 /* 394 * makelink -- 395 * make a link from source to destination 396 */ 397 void 398 makelink(char *from_name, char *to_name) 399 { 400 char src[MAXPATHLEN], dst[MAXPATHLEN], lnk[MAXPATHLEN]; 401 402 /* Try hard links first */ 403 if (dolink & (LN_HARD|LN_MIXED)) { 404 if (do_link(from_name, to_name) == -1) { 405 if ((dolink & LN_HARD) || errno != EXDEV) 406 err(1, "link %s -> %s", from_name, to_name); 407 } 408 else { 409 metadata_log(to_name, "hlink", NULL, from_name); 410 return; 411 } 412 } 413 414 /* Symbolic links */ 415 if (dolink & LN_ABSOLUTE) { 416 /* Convert source path to absolute */ 417 if (realpath(from_name, src) == NULL) 418 err(1, "%s", from_name); 419 do_symlink(src, to_name); 420 metadata_log(to_name, "link", NULL, src); 421 return; 422 } 423 424 if (dolink & LN_RELATIVE) { 425 char *cp, *d, *s; 426 427 /* Resolve pathnames */ 428 if (realpath(from_name, src) == NULL) 429 err(1, "%s", from_name); 430 431 /* 432 * The last component of to_name may be a symlink, 433 * so use realpath to resolve only the directory. 434 */ 435 cp = dirname(to_name); 436 if (realpath(cp, dst) == NULL) 437 err(1, "%s", cp); 438 /* .. and add the last component */ 439 if (strcmp(dst, "/") != 0) { 440 if (strlcat(dst, "/", sizeof(dst)) > sizeof(dst)) 441 errx(1, "resolved pathname too long"); 442 } 443 cp = xbasename(to_name); 444 if (strlcat(dst, cp, sizeof(dst)) > sizeof(dst)) 445 errx(1, "resolved pathname too long"); 446 447 /* trim common path components */ 448 for (s = src, d = dst; *s == *d; s++, d++) 449 continue; 450 while (*s != '/') 451 s--, d--; 452 453 /* count the number of directories we need to backtrack */ 454 for (++d, lnk[0] = '\0'; *d; d++) 455 if (*d == '/') 456 (void)strcat(lnk, "../"); 457 458 (void)strcat(lnk, ++s); 459 460 do_symlink(lnk, dst); 461 metadata_log(dst, "link", NULL, lnk); 462 return; 463 } 464 465 /* 466 * If absolute or relative was not specified, 467 * try the names the user provided 468 */ 469 do_symlink(from_name, to_name); 470 metadata_log(to_name, "link", NULL, from_name); 471 } 472 473 /* 474 * install -- 475 * build a path name and install the file 476 */ 477 void 478 install(char *from_name, char *to_name, u_int flags) 479 { 480 struct stat from_sb, to_sb; 481 struct timeval tv[2]; 482 int devnull, from_fd, to_fd, serrno, tmpmode; 483 char *p, tmpl[MAXPATHLEN], *oto_name; 484 485 if (flags & DIRECTORY || strcmp(from_name, _PATH_DEVNULL)) { 486 if (!dolink) { 487 if (stat(from_name, &from_sb)) 488 err(1, "%s", from_name); 489 if (!S_ISREG(from_sb.st_mode)) 490 errx(1, "%s: not a regular file", from_name); 491 } 492 /* Build the target path. */ 493 if (flags & DIRECTORY) { 494 (void)snprintf(pathbuf, sizeof(pathbuf), "%s/%s", 495 to_name, 496 (p = strrchr(from_name, '/')) ? ++p : from_name); 497 to_name = pathbuf; 498 } 499 devnull = 0; 500 } else { 501 from_sb.st_flags = 0; /* XXX */ 502 devnull = 1; 503 } 504 505 /* 506 * Unlink now... avoid ETXTBSY errors later. Try and turn 507 * off the append/immutable bits -- if we fail, go ahead, 508 * it might work. 509 */ 510 if (stat(to_name, &to_sb) == 0 && 511 to_sb.st_flags & (NOCHANGEBITS)) 512 (void)chflags(to_name, to_sb.st_flags & ~(NOCHANGEBITS)); 513 if (dorename) { 514 (void)snprintf(tmpl, sizeof(tmpl), "%sinst.XXXXXX", 515 xdirname(to_name)); 516 oto_name = to_name; 517 to_name = tmpl; 518 } else { 519 oto_name = NULL; /* pacify gcc */ 520 if (dobackup) 521 backup(to_name); 522 else 523 (void)unlink(to_name); 524 } 525 526 if (dolink) { 527 makelink(from_name, dorename ? oto_name : to_name); 528 return; 529 } 530 531 /* Create target. */ 532 if (dorename) { 533 if ((to_fd = mkstemp(to_name)) == -1) 534 err(1, "%s", to_name); 535 } else { 536 if ((to_fd = open(to_name, 537 O_CREAT | O_WRONLY | O_TRUNC, S_IRUSR | S_IWUSR)) < 0) 538 err(1, "%s", to_name); 539 } 540 if (!devnull) { 541 if ((from_fd = open(from_name, O_RDONLY, 0)) < 0) { 542 (void)unlink(to_name); 543 err(1, "%s", from_name); 544 } 545 copy(from_fd, from_name, to_fd, to_name, from_sb.st_size); 546 (void)close(from_fd); 547 } 548 549 if (dostrip) { 550 strip(to_name); 551 552 /* 553 * Re-open our fd on the target, in case we used a strip 554 * that does not work in-place -- like gnu binutils strip. 555 */ 556 close(to_fd); 557 if ((to_fd = open(to_name, O_RDONLY, S_IRUSR | S_IWUSR)) < 0) 558 err(1, "stripping %s", to_name); 559 } 560 561 /* 562 * Set owner, group, mode for target; do the chown first, 563 * chown may lose the setuid bits. 564 */ 565 if (!dounpriv && 566 (flags & (HASUID | HASGID)) && fchown(to_fd, uid, gid) == -1) { 567 serrno = errno; 568 (void)unlink(to_name); 569 errx(1, "%s: chown/chgrp: %s", to_name, strerror(serrno)); 570 } 571 tmpmode = mode; 572 if (dounpriv) 573 tmpmode &= S_IRWXU|S_IRWXG|S_IRWXO; 574 if (fchmod(to_fd, tmpmode) == -1) { 575 serrno = errno; 576 (void)unlink(to_name); 577 errx(1, "%s: chmod: %s", to_name, strerror(serrno)); 578 } 579 580 /* 581 * Preserve the date of the source file. 582 */ 583 if (dopreserve) { 584 #ifdef BSD4_4 585 TIMESPEC_TO_TIMEVAL(&tv[0], &from_sb.st_atimespec); 586 TIMESPEC_TO_TIMEVAL(&tv[1], &from_sb.st_mtimespec); 587 #else 588 tv[0].tv_sec = from_sb.st_atime; 589 tv[0].tv_usec = 0; 590 tv[1].tv_sec = from_sb.st_mtime; 591 tv[1].tv_usec = 0; 592 #endif 593 if (!dounpriv && futimes(to_fd, tv) == -1) 594 warn("%s: futimes", to_name); 595 } 596 597 (void)close(to_fd); 598 599 if (dorename) { 600 if (rename(to_name, oto_name) == -1) 601 err(1, "%s: rename", to_name); 602 to_name = oto_name; 603 } 604 605 if (!docopy && !devnull && unlink(from_name)) 606 err(1, "%s", from_name); 607 608 /* 609 * If provided a set of flags, set them, otherwise, preserve the 610 * flags, except for the dump flag. 611 */ 612 if (!dounpriv && chflags(to_name, 613 flags & SETFLAGS ? fileflags : from_sb.st_flags & ~UF_NODUMP) == -1) 614 { 615 if (errno != EOPNOTSUPP || (from_sb.st_flags & ~UF_NODUMP) != 0) 616 warn("%s: chflags", to_name); 617 } 618 619 metadata_log(to_name, "file", tv, NULL); 620 } 621 622 /* 623 * copy -- 624 * copy from one file to another 625 */ 626 void 627 copy(int from_fd, char *from_name, int to_fd, char *to_name, off_t size) 628 { 629 ssize_t nr, nw; 630 int serrno; 631 char *p; 632 char buf[MAXBSIZE]; 633 634 /* 635 * There's no reason to do anything other than close the file 636 * now if it's empty, so let's not bother. 637 */ 638 if (size > 0) { 639 640 /* 641 * Mmap and write if less than 8M (the limit is so we 642 * don't totally trash memory on big files). This is 643 * really a minor hack, but it wins some CPU back. 644 */ 645 646 if (size <= 8 * 1048576) { 647 if ((p = mmap(NULL, (size_t)size, PROT_READ, 648 MAP_FILE|MAP_SHARED, from_fd, (off_t)0)) 649 == MAP_FAILED) { 650 goto mmap_failed; 651 } 652 #ifdef MADV_SEQUENTIAL 653 if (madvise(p, (size_t)size, MADV_SEQUENTIAL) == -1 654 && errno != EOPNOTSUPP) 655 warnx("madvise: %s", strerror(errno)); 656 #endif 657 658 if (write(to_fd, p, size) != size) { 659 serrno = errno; 660 (void)unlink(to_name); 661 errx(1, "%s: %s", 662 to_name, strerror(serrno)); 663 } 664 } else { 665 mmap_failed: 666 while ((nr = read(from_fd, buf, sizeof(buf))) > 0) { 667 if ((nw = write(to_fd, buf, nr)) != nr) { 668 serrno = errno; 669 (void)unlink(to_name); 670 errx(1, "%s: %s", to_name, 671 strerror(nw > 0 ? EIO : serrno)); 672 } 673 } 674 if (nr != 0) { 675 serrno = errno; 676 (void)unlink(to_name); 677 errx(1, "%s: %s", from_name, strerror(serrno)); 678 } 679 } 680 } 681 } 682 683 /* 684 * strip -- 685 * use strip(1) to strip the target file 686 */ 687 void 688 strip(char *to_name) 689 { 690 int serrno, status; 691 char *stripprog; 692 693 switch (vfork()) { 694 case -1: 695 serrno = errno; 696 (void)unlink(to_name); 697 errx(1, "vfork: %s", strerror(serrno)); 698 /*NOTREACHED*/ 699 case 0: 700 stripprog = getenv("STRIP"); 701 if (stripprog == NULL) 702 stripprog = _PATH_STRIP; 703 704 if (stripArgs) { 705 /* 706 * build up a command line and let /bin/sh 707 * parse the arguments 708 */ 709 char* cmd = (char*)malloc(sizeof(char)* 710 (3+strlen(stripprog)+ 711 strlen(stripArgs)+ 712 strlen(to_name))); 713 714 if (cmd == NULL) 715 errx(1, "%s", strerror(ENOMEM)); 716 717 sprintf(cmd, "%s %s %s", stripprog, stripArgs, to_name); 718 719 execl(_PATH_BSHELL, "sh", "-c", cmd, NULL); 720 } else 721 execlp(stripprog, "strip", to_name, NULL); 722 723 warn("%s", stripprog); 724 _exit(1); 725 /*NOTREACHED*/ 726 default: 727 if (wait(&status) == -1 || status) 728 (void)unlink(to_name); 729 } 730 } 731 732 /* 733 * backup -- 734 * backup file "to_name" to to_name.suffix 735 * if suffix contains a "%", it's taken as a printf(3) pattern 736 * used for a numbered backup. 737 */ 738 void 739 backup(const char *to_name) 740 { 741 char bname[FILENAME_MAX]; 742 743 if (numberedbackup) { 744 /* Do numbered backup */ 745 int cnt; 746 char suffix_expanded[FILENAME_MAX]; 747 748 cnt=0; 749 do { 750 (void)snprintf(suffix_expanded, FILENAME_MAX, suffix, 751 cnt); 752 (void)snprintf(bname, FILENAME_MAX, "%s%s", to_name, 753 suffix_expanded); 754 cnt++; 755 } while (access(bname, F_OK) == 0); 756 } else { 757 /* Do simple backup */ 758 (void)snprintf(bname, FILENAME_MAX, "%s%s", to_name, suffix); 759 } 760 761 (void)rename(to_name, bname); 762 } 763 764 /* 765 * install_dir -- 766 * build directory hierarchy 767 */ 768 void 769 install_dir(char *path, u_int flags) 770 { 771 char *p; 772 struct stat sb; 773 int ch; 774 775 for (p = path;; ++p) 776 if (!*p || (p != path && *p == '/')) { 777 ch = *p; 778 *p = '\0'; 779 if (stat(path, &sb)) { 780 if (errno != ENOENT || mkdir(path, 0777) < 0) { 781 err(1, "%s", path); 782 } 783 } 784 if (!(*p = ch)) 785 break; 786 } 787 788 if (!dounpriv && ( 789 ((flags & (HASUID | HASGID)) && chown(path, uid, gid) == -1) 790 || chmod(path, mode) == -1 )) { 791 warn("%s", path); 792 } 793 metadata_log(path, "dir", NULL, NULL); 794 } 795 796 /* 797 * metadata_log -- 798 * if metafp is not NULL, output mtree(8) full path name and settings to 799 * metafp, to allow permissions to be set correctly by other tools. 800 */ 801 void 802 metadata_log(const char *path, const char *type, struct timeval *tv, 803 const char *link) 804 { 805 const char extra[] = { ' ', '\t', '\n', '\\', '#', '\0' }; 806 char *buf; 807 808 if (!metafp) 809 return; 810 buf = (char *)malloc(4 * strlen(path) + 1); /* buf for strsvis(3) */ 811 if (buf == NULL) { 812 warnx("%s", strerror(ENOMEM)); 813 return; 814 } 815 if (flock(fileno(metafp), LOCK_EX) == -1) { /* lock log file */ 816 warn("can't lock %s", metafile); 817 return; 818 } 819 820 strsvis(buf, path, VIS_CSTYLE, extra); /* encode name */ 821 fprintf(metafp, ".%s%s type=%s mode=%#o", /* print details */ 822 buf[0] == '/' ? "" : "/", buf, type, mode); 823 if (link) 824 fprintf(metafp, " link=%s", link); 825 if (owner) 826 fprintf(metafp, " uname=%s", owner); 827 if (group) 828 fprintf(metafp, " gname=%s", group); 829 if (fflags) 830 fprintf(metafp, " flags=%s", fflags); 831 if (tags) 832 fprintf(metafp, " tags=%s", tags); 833 if (tv != NULL && dopreserve) 834 fprintf(metafp, " time=%ld.%ld", tv[1].tv_sec, tv[1].tv_usec); 835 fputc('\n', metafp); 836 fflush(metafp); /* flush output */ 837 if (flock(fileno(metafp), LOCK_UN) == -1) { /* unlock log file */ 838 warn("can't unlock %s", metafile); 839 } 840 free(buf); 841 } 842 843 /* 844 * xbasename -- 845 * libc basename(3) that returns a pointer to a static buffer 846 * instead of overwriting that passed-in string. 847 */ 848 char * 849 xbasename(char *path) 850 { 851 static char tmp[MAXPATHLEN]; 852 853 (void)strlcpy(tmp, path, sizeof(tmp)); 854 return (basename(tmp)); 855 } 856 857 /* 858 * xdirname -- 859 * libc dirname(3) that returns a pointer to a static buffer 860 * instead of overwriting that passed-in string. 861 */ 862 char * 863 xdirname(char *path) 864 { 865 static char tmp[MAXPATHLEN]; 866 867 (void)strlcpy(tmp, path, sizeof(tmp)); 868 return (dirname(tmp)); 869 } 870 871 /* 872 * usage -- 873 * print a usage message and die 874 */ 875 void 876 usage(void) 877 { 878 879 (void)fprintf(stderr, "\ 880 usage: install [-Ubcprs] [-M log] [-T tags] [-B suffix] [-f flags] [-m mode]\n\ 881 [-o owner] [-g group] [-l linkflags] [-S stripflags] file1 file2\n\ 882 install [-Ubcprs] [-M log] [-T tags] [-B suffix] [-f flags] [-m mode]\n\ 883 [-o owner] [-g group] [-l linkflags] [-S stripflags]\n\ 884 file1 ... fileN directory\n\ 885 install [-Up] [-M log] [-T tags] -d [-m mode]\n\ 886 [-o owner] [-g group] directory ...\n"); 887 exit(1); 888 } 889
Indexes created Tue Sep 30 17:09:57 GMT 2025