xinstall.c revision 1.88
1 /* $NetBSD: xinstall.c,v 1.88 2005/05/08 10:23:13 lukem 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. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #if HAVE_NBTOOL_CONFIG_H 33 #include "nbtool_config.h" 34 #else 35 #define HAVE_FUTIMES 1 36 #define HAVE_STRUCT_STAT_ST_FLAGS 1 37 #endif 38 39 #include <sys/cdefs.h> 40 #if defined(__COPYRIGHT) && !defined(lint) 41 __COPYRIGHT("@(#) Copyright (c) 1987, 1993\n\ 42 The Regents of the University of California. All rights reserved.\n"); 43 #endif /* not lint */ 44 45 #if defined(__RCSID) && !defined(lint) 46 #if 0 47 static char sccsid[] = "@(#)xinstall.c 8.1 (Berkeley) 7/21/93"; 48 #else 49 __RCSID("$NetBSD: xinstall.c,v 1.88 2005/05/08 10:23:13 lukem Exp $"); 50 #endif 51 #endif /* not lint */ 52 53 #include <sys/param.h> 54 #include <sys/mman.h> 55 #include <sys/stat.h> 56 #include <sys/wait.h> 57 58 #include <ctype.h> 59 #include <err.h> 60 #include <errno.h> 61 #include <fcntl.h> 62 #include <grp.h> 63 #include <libgen.h> 64 #include <paths.h> 65 #include <pwd.h> 66 #include <stdio.h> 67 #include <stdlib.h> 68 #include <string.h> 69 #include <unistd.h> 70 #include <vis.h> 71 72 #include <md5.h> 73 #include <rmd160.h> 74 #include <sha1.h> 75 76 #include "pathnames.h" 77 #include "stat_flags.h" 78 #include "mtree.h" 79 80 #define STRIP_ARGS_MAX 32 81 #define BACKUP_SUFFIX ".old" 82 83 int dobackup, dodir, dostrip, dolink, dopreserve, dorename, dounpriv; 84 int numberedbackup; 85 int mode = S_IRWXU|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH; 86 char pathbuf[MAXPATHLEN]; 87 id_t uid = -1, gid = -1; 88 char *group, *owner, *fflags, *tags; 89 FILE *metafp; 90 char *metafile; 91 u_long fileflags; 92 char *stripArgs; 93 char *afterinstallcmd; 94 char *suffix = BACKUP_SUFFIX; 95 char *destdir; 96 97 enum { 98 DIGEST_NONE = 0, 99 DIGEST_MD5, 100 DIGEST_RMD160, 101 DIGEST_SHA1, 102 } digesttype = DIGEST_NONE; 103 char *digest; 104 105 #define LN_ABSOLUTE 0x01 106 #define LN_RELATIVE 0x02 107 #define LN_HARD 0x04 108 #define LN_SYMBOLIC 0x08 109 #define LN_MIXED 0x10 110 111 #define DIRECTORY 0x01 /* Tell install it's a directory. */ 112 #define SETFLAGS 0x02 /* Tell install to set flags. */ 113 #define HASUID 0x04 /* Tell install the uid was given */ 114 #define HASGID 0x08 /* Tell install the gid was given */ 115 116 void afterinstall(const char *, const char *, int); 117 void backup(const char *); 118 char *copy(int, char *, int, char *, off_t); 119 int do_link(char *, char *); 120 void do_symlink(char *, char *); 121 void install(char *, char *, u_int); 122 void install_dir(char *, u_int); 123 int main(int, char *[]); 124 void makelink(char *, char *); 125 void metadata_log(const char *, const char *, struct timeval *, 126 const char *, const char *); 127 int parseid(char *, id_t *); 128 void strip(char *); 129 void usage(void); 130 char *xbasename(char *); 131 char *xdirname(char *); 132 133 int 134 main(int argc, char *argv[]) 135 { 136 struct stat from_sb, to_sb; 137 void *set; 138 u_int iflags; 139 int ch, no_target; 140 char *p, *to_name; 141 142 setprogname(argv[0]); 143 144 iflags = 0; 145 while ((ch = getopt(argc, argv, "a:cbB:dD:f:g:h:l:m:M:N:o:prsS:T:U")) 146 != -1) 147 switch((char)ch) { 148 case 'a': 149 afterinstallcmd = strdup(optarg); 150 if (afterinstallcmd == NULL) 151 errx(1, "%s", strerror(ENOMEM)); 152 break; 153 case 'B': 154 suffix = optarg; 155 numberedbackup = 0; 156 { 157 /* Check if given suffix really generates 158 different suffixes - catch e.g. ".%" */ 159 char suffix_expanded0[FILENAME_MAX], 160 suffix_expanded1[FILENAME_MAX]; 161 (void)snprintf(suffix_expanded0, FILENAME_MAX, 162 suffix, 0); 163 (void)snprintf(suffix_expanded1, FILENAME_MAX, 164 suffix, 1); 165 if (strcmp(suffix_expanded0, suffix_expanded1) 166 != 0) 167 numberedbackup = 1; 168 } 169 /* fall through; -B implies -b */ 170 /*FALLTHROUGH*/ 171 case 'b': 172 dobackup = 1; 173 break; 174 case 'c': 175 /* ignored; was "docopy" which is now the default. */ 176 break; 177 case 'd': 178 dodir = 1; 179 break; 180 case 'D': 181 destdir = optarg; 182 break; 183 #if ! HAVE_NBTOOL_CONFIG_H 184 case 'f': 185 fflags = optarg; 186 break; 187 #endif 188 case 'g': 189 group = optarg; 190 break; 191 case 'h': 192 digest = optarg; 193 break; 194 case 'l': 195 for (p = optarg; *p; p++) 196 switch (*p) { 197 case 's': 198 dolink &= ~(LN_HARD|LN_MIXED); 199 dolink |= LN_SYMBOLIC; 200 break; 201 case 'h': 202 dolink &= ~(LN_SYMBOLIC|LN_MIXED); 203 dolink |= LN_HARD; 204 break; 205 case 'm': 206 dolink &= ~(LN_SYMBOLIC|LN_HARD); 207 dolink |= LN_MIXED; 208 break; 209 case 'a': 210 dolink &= ~LN_RELATIVE; 211 dolink |= LN_ABSOLUTE; 212 break; 213 case 'r': 214 dolink &= ~LN_ABSOLUTE; 215 dolink |= LN_RELATIVE; 216 break; 217 default: 218 errx(1, "%c: invalid link type", *p); 219 /* NOTREACHED */ 220 } 221 break; 222 case 'm': 223 if (!(set = setmode(optarg))) 224 errx(1, "%s: invalid file mode", optarg); 225 mode = getmode(set, 0); 226 free(set); 227 break; 228 case 'M': 229 metafile = optarg; 230 break; 231 case 'N': 232 if (! setup_getid(optarg)) 233 errx(1, 234 "Unable to use user and group databases in `%s'", 235 optarg); 236 break; 237 case 'o': 238 owner = optarg; 239 break; 240 case 'p': 241 dopreserve = 1; 242 break; 243 case 'r': 244 dorename = 1; 245 break; 246 case 'S': 247 stripArgs = strdup(optarg); 248 if (stripArgs == NULL) 249 errx(1, "%s", strerror(ENOMEM)); 250 /* fall through; -S implies -s */ 251 /*FALLTHROUGH*/ 252 case 's': 253 dostrip = 1; 254 break; 255 case 'T': 256 tags = optarg; 257 break; 258 case 'U': 259 dounpriv = 1; 260 break; 261 case '?': 262 default: 263 usage(); 264 } 265 argc -= optind; 266 argv += optind; 267 268 /* strip and link options make no sense when creating directories */ 269 if ((dostrip || dolink) && dodir) 270 usage(); 271 272 /* strip and flags make no sense with links */ 273 if ((dostrip || fflags) && dolink) 274 usage(); 275 276 /* must have at least two arguments, except when creating directories */ 277 if (argc < 2 && !dodir) 278 usage(); 279 280 if (digest) { 281 if (0) { 282 } else if (strcmp(digest, "none") == 0) { 283 digesttype = DIGEST_NONE; 284 } else if (strcmp(digest, "md5") == 0) { 285 digesttype = DIGEST_MD5; 286 } else if (strcmp(digest, "rmd160") == 0) { 287 digesttype = DIGEST_RMD160; 288 } else if (strcmp(digest, "sha1") == 0) { 289 digesttype = DIGEST_SHA1; 290 } else { 291 warnx("unknown digest `%s'", digest); 292 usage(); 293 } 294 } 295 296 /* get group and owner id's */ 297 if (group && !dounpriv) { 298 if (gid_from_group(group, &gid) == -1 && ! parseid(group, &gid)) 299 errx(1, "unknown group %s", group); 300 iflags |= HASGID; 301 } 302 if (owner && !dounpriv) { 303 if (uid_from_user(owner, &uid) == -1 && ! parseid(owner, &uid)) 304 errx(1, "unknown user %s", owner); 305 iflags |= HASUID; 306 } 307 308 #if ! HAVE_NBTOOL_CONFIG_H 309 if (fflags && !dounpriv) { 310 if (string_to_flags(&fflags, &fileflags, NULL)) 311 errx(1, "%s: invalid flag", fflags); 312 iflags |= SETFLAGS; 313 } 314 #endif 315 316 if (metafile) { 317 if ((metafp = fopen(metafile, "a")) == NULL) 318 warn("open %s", metafile); 319 } else 320 digesttype = DIGEST_NONE; 321 322 if (dodir) { 323 for (; *argv != NULL; ++argv) 324 install_dir(*argv, iflags); 325 exit (0); 326 } 327 328 no_target = stat(to_name = argv[argc - 1], &to_sb); 329 if (!no_target && S_ISDIR(to_sb.st_mode)) { 330 for (; *argv != to_name; ++argv) 331 install(*argv, to_name, iflags | DIRECTORY); 332 exit(0); 333 } 334 335 /* can't do file1 file2 directory/file */ 336 if (argc != 2) 337 usage(); 338 339 if (!no_target) { 340 /* makelink() handles checks for links */ 341 if (!dolink) { 342 if (stat(*argv, &from_sb)) 343 err(1, "%s: stat", *argv); 344 if (!S_ISREG(to_sb.st_mode)) 345 errx(1, "%s: not a regular file", to_name); 346 if (to_sb.st_dev == from_sb.st_dev && 347 to_sb.st_ino == from_sb.st_ino) 348 errx(1, "%s and %s are the same file", *argv, 349 to_name); 350 } 351 /* 352 * Unlink now... avoid ETXTBSY errors later. Try and turn 353 * off the append/immutable bits -- if we fail, go ahead, 354 * it might work. 355 */ 356 #if ! HAVE_NBTOOL_CONFIG_H 357 #define NOCHANGEBITS (UF_IMMUTABLE | UF_APPEND | SF_IMMUTABLE | SF_APPEND) 358 if (to_sb.st_flags & NOCHANGEBITS) 359 (void)chflags(to_name, 360 to_sb.st_flags & ~(NOCHANGEBITS)); 361 #endif 362 if (dobackup) 363 backup(to_name); 364 else if (!dorename) 365 (void)unlink(to_name); 366 } 367 install(*argv, to_name, iflags); 368 exit(0); 369 } 370 371 /* 372 * parseid -- 373 * parse uid or gid from arg into id, returning non-zero if successful 374 */ 375 int 376 parseid(char *name, id_t *id) 377 { 378 char *ep; 379 380 errno = 0; 381 *id = (id_t)strtoul(name, &ep, 10); 382 if (errno || *ep != '\0') 383 return (0); 384 return (1); 385 } 386 387 /* 388 * do_link -- 389 * make a hard link, obeying dorename if set 390 * return -1 on failure 391 */ 392 int 393 do_link(char *from_name, char *to_name) 394 { 395 char tmpl[MAXPATHLEN]; 396 int ret; 397 398 if (dorename) { 399 (void)snprintf(tmpl, sizeof(tmpl), "%s/inst.XXXXXX", 400 xdirname(to_name)); 401 /* This usage is safe. The linker will bitch anyway. */ 402 if (mktemp(tmpl) == NULL) 403 err(1, "%s: mktemp", tmpl); 404 ret = link(from_name, tmpl); 405 if (ret == 0) { 406 ret = rename(tmpl, to_name); 407 if (ret < 0) 408 /* remove temporary link before exiting */ 409 (void)unlink(tmpl); 410 } 411 return (ret); 412 } else 413 return (link(from_name, to_name)); 414 } 415 416 /* 417 * do_symlink -- 418 * make a symbolic link, obeying dorename if set 419 * exit on failure 420 */ 421 void 422 do_symlink(char *from_name, char *to_name) 423 { 424 char tmpl[MAXPATHLEN]; 425 426 if (dorename) { 427 (void)snprintf(tmpl, sizeof(tmpl), "%s/inst.XXXXXX", 428 xdirname(to_name)); 429 /* This usage is safe. The linker will bitch anyway. */ 430 if (mktemp(tmpl) == NULL) 431 err(1, "%s: mktemp", tmpl); 432 433 if (symlink(from_name, tmpl) == -1) 434 err(1, "symlink %s -> %s", from_name, tmpl); 435 if (rename(tmpl, to_name) == -1) { 436 /* remove temporary link before exiting */ 437 (void)unlink(tmpl); 438 err(1, "%s: rename", to_name); 439 } 440 } else { 441 if (symlink(from_name, to_name) == -1) 442 err(1, "symlink %s -> %s", from_name, to_name); 443 } 444 } 445 446 /* 447 * makelink -- 448 * make a link from source to destination 449 */ 450 void 451 makelink(char *from_name, char *to_name) 452 { 453 char src[MAXPATHLEN], dst[MAXPATHLEN], lnk[MAXPATHLEN]; 454 struct stat to_sb; 455 456 /* Try hard links first */ 457 if (dolink & (LN_HARD|LN_MIXED)) { 458 if (do_link(from_name, to_name) == -1) { 459 if ((dolink & LN_HARD) || errno != EXDEV) 460 err(1, "link %s -> %s", from_name, to_name); 461 } else { 462 if (stat(to_name, &to_sb)) 463 err(1, "%s: stat", to_name); 464 if (S_ISREG(to_sb.st_mode)) { 465 /* XXX: only metalog hardlinked files */ 466 int omode; 467 char *oowner, *ogroup, *offlags; 468 char *dres; 469 470 /* XXX: use underlying perms */ 471 omode = mode; 472 mode = (to_sb.st_mode & 0777); 473 oowner = owner; 474 owner = NULL; 475 ogroup = group; 476 group = NULL; 477 offlags = fflags; 478 fflags = NULL; 479 switch (digesttype) { 480 case DIGEST_MD5: 481 dres = MD5File(from_name, NULL); 482 break; 483 case DIGEST_RMD160: 484 dres = RMD160File(from_name, NULL); 485 break; 486 case DIGEST_SHA1: 487 dres = SHA1File(from_name, NULL); 488 break; 489 default: 490 dres = NULL; 491 } 492 metadata_log(to_name, "file", NULL, NULL, dres); 493 free(dres); 494 mode = omode; 495 owner = oowner; 496 group = ogroup; 497 fflags = offlags; 498 } 499 return; 500 } 501 } 502 503 /* Symbolic links */ 504 if (dolink & LN_ABSOLUTE) { 505 /* Convert source path to absolute */ 506 if (realpath(from_name, src) == NULL) 507 err(1, "%s: realpath", from_name); 508 do_symlink(src, to_name); 509 metadata_log(to_name, "link", NULL, src, NULL); 510 return; 511 } 512 513 if (dolink & LN_RELATIVE) { 514 char *cp, *d, *s; 515 516 /* Resolve pathnames */ 517 if (realpath(from_name, src) == NULL) 518 err(1, "%s: realpath", from_name); 519 520 /* 521 * The last component of to_name may be a symlink, 522 * so use realpath to resolve only the directory. 523 */ 524 cp = xdirname(to_name); 525 if (realpath(cp, dst) == NULL) 526 err(1, "%s: realpath", cp); 527 /* .. and add the last component */ 528 if (strcmp(dst, "/") != 0) { 529 if (strlcat(dst, "/", sizeof(dst)) > sizeof(dst)) 530 errx(1, "resolved pathname too long"); 531 } 532 cp = xbasename(to_name); 533 if (strlcat(dst, cp, sizeof(dst)) > sizeof(dst)) 534 errx(1, "resolved pathname too long"); 535 536 /* trim common path components */ 537 for (s = src, d = dst; *s == *d; s++, d++) 538 continue; 539 while (*s != '/') 540 s--, d--; 541 542 /* count the number of directories we need to backtrack */ 543 for (++d, lnk[0] = '\0'; *d; d++) 544 if (*d == '/') 545 (void)strlcat(lnk, "../", sizeof(lnk)); 546 547 (void)strlcat(lnk, ++s, sizeof(lnk)); 548 549 do_symlink(lnk, dst); 550 metadata_log(dst, "link", NULL, lnk, NULL); 551 return; 552 } 553 554 /* 555 * If absolute or relative was not specified, 556 * try the names the user provided 557 */ 558 do_symlink(from_name, to_name); 559 metadata_log(to_name, "link", NULL, from_name, NULL); 560 } 561 562 /* 563 * install -- 564 * build a path name and install the file 565 */ 566 void 567 install(char *from_name, char *to_name, u_int flags) 568 { 569 struct stat from_sb; 570 #if ! HAVE_NBTOOL_CONFIG_H 571 struct stat to_sb; 572 #endif 573 struct timeval tv[2]; 574 int devnull, from_fd, to_fd, serrno, tmpmode; 575 char *p, tmpl[MAXPATHLEN], *oto_name, *digestresult; 576 577 if (!dolink) { 578 /* ensure that from_sb & tv are sane if !dolink */ 579 if (stat(from_name, &from_sb)) 580 err(1, "%s: stat", from_name); 581 #if BSD4_4 && !HAVE_NBTOOL_CONFIG_H 582 TIMESPEC_TO_TIMEVAL(&tv[0], &from_sb.st_atimespec); 583 TIMESPEC_TO_TIMEVAL(&tv[1], &from_sb.st_mtimespec); 584 #else 585 tv[0].tv_sec = from_sb.st_atime; 586 tv[0].tv_usec = 0; 587 tv[1].tv_sec = from_sb.st_mtime; 588 tv[1].tv_usec = 0; 589 #endif 590 } 591 592 if (flags & DIRECTORY || strcmp(from_name, _PATH_DEVNULL)) { 593 if (!dolink) { 594 if (!S_ISREG(from_sb.st_mode)) 595 errx(1, "%s: not a regular file", from_name); 596 } 597 /* Build the target path. */ 598 if (flags & DIRECTORY) { 599 (void)snprintf(pathbuf, sizeof(pathbuf), "%s/%s", 600 to_name, 601 (p = strrchr(from_name, '/')) ? ++p : from_name); 602 to_name = pathbuf; 603 } 604 devnull = 0; 605 } else { 606 #if HAVE_STRUCT_STAT_ST_FLAGS 607 from_sb.st_flags = 0; /* XXX */ 608 #endif 609 devnull = 1; 610 } 611 612 /* 613 * Unlink now... avoid ETXTBSY errors later. Try and turn 614 * off the append/immutable bits -- if we fail, go ahead, 615 * it might work. 616 */ 617 #if ! HAVE_NBTOOL_CONFIG_H 618 if (stat(to_name, &to_sb) == 0 && 619 to_sb.st_flags & (NOCHANGEBITS)) 620 (void)chflags(to_name, to_sb.st_flags & ~(NOCHANGEBITS)); 621 #endif 622 if (dorename) { 623 (void)snprintf(tmpl, sizeof(tmpl), "%s/inst.XXXXXX", 624 xdirname(to_name)); 625 oto_name = to_name; 626 to_name = tmpl; 627 } else { 628 oto_name = NULL; /* pacify gcc */ 629 if (dobackup) 630 backup(to_name); 631 else 632 (void)unlink(to_name); 633 } 634 635 if (dolink) { 636 makelink(from_name, dorename ? oto_name : to_name); 637 return; 638 } 639 640 /* Create target. */ 641 if (dorename) { 642 if ((to_fd = mkstemp(to_name)) == -1) 643 err(1, "%s: mkstemp", to_name); 644 } else { 645 if ((to_fd = open(to_name, 646 O_CREAT | O_WRONLY | O_TRUNC, S_IRUSR | S_IWUSR)) < 0) 647 err(1, "%s: open", to_name); 648 } 649 digestresult = NULL; 650 if (!devnull) { 651 if ((from_fd = open(from_name, O_RDONLY, 0)) < 0) { 652 (void)unlink(to_name); 653 err(1, "%s: open", from_name); 654 } 655 digestresult = 656 copy(from_fd, from_name, to_fd, to_name, from_sb.st_size); 657 (void)close(from_fd); 658 } 659 660 if (dostrip) { 661 strip(to_name); 662 663 /* 664 * Re-open our fd on the target, in case we used a strip 665 * that does not work in-place -- like gnu binutils strip. 666 */ 667 close(to_fd); 668 if ((to_fd = open(to_name, O_RDONLY, S_IRUSR | S_IWUSR)) < 0) 669 err(1, "stripping %s", to_name); 670 } 671 672 if (afterinstallcmd != NULL) { 673 afterinstall(afterinstallcmd, to_name, 1); 674 675 /* 676 * Re-open our fd on the target, in case we used an 677 * after-install command that does not work in-place 678 */ 679 close(to_fd); 680 if ((to_fd = open(to_name, O_RDONLY, S_IRUSR | S_IWUSR)) < 0) 681 err(1, "running after install command on %s", to_name); 682 } 683 684 /* 685 * Set owner, group, mode for target; do the chown first, 686 * chown may lose the setuid bits. 687 */ 688 if (!dounpriv && 689 (flags & (HASUID | HASGID)) && fchown(to_fd, uid, gid) == -1) { 690 serrno = errno; 691 (void)unlink(to_name); 692 errx(1, "%s: chown/chgrp: %s", to_name, strerror(serrno)); 693 } 694 tmpmode = mode; 695 if (dounpriv) 696 tmpmode &= S_IRWXU|S_IRWXG|S_IRWXO; 697 if (fchmod(to_fd, tmpmode) == -1) { 698 serrno = errno; 699 (void)unlink(to_name); 700 errx(1, "%s: chmod: %s", to_name, strerror(serrno)); 701 } 702 703 /* 704 * Preserve the date of the source file. 705 */ 706 if (dopreserve) { 707 #if HAVE_FUTIMES 708 if (futimes(to_fd, tv) == -1) 709 warn("%s: futimes", to_name); 710 #else 711 if (utimes(to_name, tv) == -1) 712 warn("%s: utimes", to_name); 713 #endif 714 } 715 716 (void)close(to_fd); 717 718 if (dorename) { 719 if (rename(to_name, oto_name) == -1) 720 err(1, "%s: rename", to_name); 721 to_name = oto_name; 722 } 723 724 /* 725 * If provided a set of flags, set them, otherwise, preserve the 726 * flags, except for the dump flag. 727 */ 728 #if ! HAVE_NBTOOL_CONFIG_H 729 if (!dounpriv && chflags(to_name, 730 flags & SETFLAGS ? fileflags : from_sb.st_flags & ~UF_NODUMP) == -1) 731 { 732 if (errno != EOPNOTSUPP || (from_sb.st_flags & ~UF_NODUMP) != 0) 733 warn("%s: chflags", to_name); 734 } 735 #endif 736 737 metadata_log(to_name, "file", tv, NULL, digestresult); 738 free(digestresult); 739 } 740 741 /* 742 * copy -- 743 * copy from one file to another 744 */ 745 char * 746 copy(int from_fd, char *from_name, int to_fd, char *to_name, off_t size) 747 { 748 ssize_t nr, nw; 749 int serrno; 750 char *p; 751 char buf[MAXBSIZE]; 752 MD5_CTX ctxMD5; 753 RMD160_CTX ctxRMD160; 754 SHA1_CTX ctxSHA1; 755 756 switch (digesttype) { 757 case DIGEST_MD5: 758 MD5Init(&ctxMD5); 759 break; 760 case DIGEST_RMD160: 761 RMD160Init(&ctxRMD160); 762 break; 763 case DIGEST_SHA1: 764 SHA1Init(&ctxSHA1); 765 break; 766 case DIGEST_NONE: 767 default: 768 break; 769 } 770 /* 771 * There's no reason to do anything other than close the file 772 * now if it's empty, so let's not bother. 773 */ 774 if (size > 0) { 775 776 /* 777 * Mmap and write if less than 8M (the limit is so we 778 * don't totally trash memory on big files). This is 779 * really a minor hack, but it wins some CPU back. 780 */ 781 782 if (size <= 8 * 1048576) { 783 if ((p = mmap(NULL, (size_t)size, PROT_READ, 784 MAP_FILE|MAP_SHARED, from_fd, (off_t)0)) 785 == MAP_FAILED) { 786 goto mmap_failed; 787 } 788 #if defined(MADV_SEQUENTIAL) && !defined(__APPLE__) 789 if (madvise(p, (size_t)size, MADV_SEQUENTIAL) == -1 790 && errno != EOPNOTSUPP) 791 warnx("madvise: %s", strerror(errno)); 792 #endif 793 794 if (write(to_fd, p, size) != size) { 795 serrno = errno; 796 (void)unlink(to_name); 797 errx(1, "%s: write: %s", 798 to_name, strerror(serrno)); 799 } 800 switch (digesttype) { 801 case DIGEST_MD5: 802 MD5Update(&ctxMD5, p, size); 803 break; 804 case DIGEST_RMD160: 805 RMD160Update(&ctxRMD160, p, size); 806 break; 807 case DIGEST_SHA1: 808 SHA1Update(&ctxSHA1, p, size); 809 break; 810 default: 811 break; 812 } 813 (void)munmap(p, size); 814 } else { 815 mmap_failed: 816 while ((nr = read(from_fd, buf, sizeof(buf))) > 0) { 817 if ((nw = write(to_fd, buf, nr)) != nr) { 818 serrno = errno; 819 (void)unlink(to_name); 820 errx(1, "%s: write: %s", to_name, 821 strerror(nw > 0 ? EIO : serrno)); 822 } 823 switch (digesttype) { 824 case DIGEST_MD5: 825 MD5Update(&ctxMD5, buf, nr); 826 break; 827 case DIGEST_RMD160: 828 RMD160Update(&ctxRMD160, buf, nr); 829 break; 830 case DIGEST_SHA1: 831 SHA1Update(&ctxSHA1, buf, nr); 832 break; 833 default: 834 break; 835 } 836 } 837 if (nr != 0) { 838 serrno = errno; 839 (void)unlink(to_name); 840 errx(1, "%s: read: %s", from_name, strerror(serrno)); 841 } 842 } 843 } 844 switch (digesttype) { 845 case DIGEST_MD5: 846 return MD5End(&ctxMD5, NULL); 847 case DIGEST_RMD160: 848 return RMD160End(&ctxRMD160, NULL); 849 case DIGEST_SHA1: 850 return SHA1End(&ctxSHA1, NULL); 851 default: 852 return NULL; 853 } 854 } 855 856 /* 857 * strip -- 858 * use strip(1) to strip the target file 859 */ 860 void 861 strip(char *to_name) 862 { 863 int serrno, status; 864 char *stripprog; 865 866 switch (vfork()) { 867 case -1: 868 serrno = errno; 869 (void)unlink(to_name); 870 errx(1, "vfork: %s", strerror(serrno)); 871 /*NOTREACHED*/ 872 case 0: 873 stripprog = getenv("STRIP"); 874 if (stripprog == NULL) 875 stripprog = _PATH_STRIP; 876 877 if (stripArgs) { 878 /* 879 * build up a command line and let /bin/sh 880 * parse the arguments 881 */ 882 char* cmd = (char*)malloc(sizeof(char)* 883 (3+strlen(stripprog)+ 884 strlen(stripArgs)+ 885 strlen(to_name))); 886 887 if (cmd == NULL) 888 errx(1, "%s", strerror(ENOMEM)); 889 890 sprintf(cmd, "%s %s %s", stripprog, stripArgs, to_name); 891 892 execl(_PATH_BSHELL, "sh", "-c", cmd, NULL); 893 } else 894 execlp(stripprog, "strip", to_name, NULL); 895 896 warn("%s: exec of strip", stripprog); 897 _exit(1); 898 /*NOTREACHED*/ 899 default: 900 if (wait(&status) == -1 || status) 901 (void)unlink(to_name); 902 } 903 } 904 905 /* 906 * afterinstall -- 907 * run provided command on the target file or directory after it's been 908 * installed and stripped, but before permissions are set or it's renamed 909 */ 910 void 911 afterinstall(const char *command, const char *to_name, int errunlink) 912 { 913 int serrno, status; 914 char *cmd; 915 916 switch (vfork()) { 917 case -1: 918 serrno = errno; 919 if (errunlink) 920 (void)unlink(to_name); 921 errx(1, "vfork: %s", strerror(serrno)); 922 /*NOTREACHED*/ 923 case 0: 924 /* 925 * build up a command line and let /bin/sh 926 * parse the arguments 927 */ 928 cmd = (char*)malloc(sizeof(char)* 929 (2+strlen(command)+ 930 strlen(to_name))); 931 932 if (cmd == NULL) 933 errx(1, "%s", strerror(ENOMEM)); 934 935 sprintf(cmd, "%s %s", command, to_name); 936 937 execl(_PATH_BSHELL, "sh", "-c", cmd, NULL); 938 939 warn("%s: exec of after install command", command); 940 _exit(1); 941 /*NOTREACHED*/ 942 default: 943 if ((wait(&status) == -1 || status) && errunlink) 944 (void)unlink(to_name); 945 } 946 } 947 948 /* 949 * backup -- 950 * backup file "to_name" to to_name.suffix 951 * if suffix contains a "%", it's taken as a printf(3) pattern 952 * used for a numbered backup. 953 */ 954 void 955 backup(const char *to_name) 956 { 957 char bname[FILENAME_MAX]; 958 959 if (numberedbackup) { 960 /* Do numbered backup */ 961 int cnt; 962 char suffix_expanded[FILENAME_MAX]; 963 964 cnt=0; 965 do { 966 (void)snprintf(suffix_expanded, FILENAME_MAX, suffix, 967 cnt); 968 (void)snprintf(bname, FILENAME_MAX, "%s%s", to_name, 969 suffix_expanded); 970 cnt++; 971 } while (access(bname, F_OK) == 0); 972 } else { 973 /* Do simple backup */ 974 (void)snprintf(bname, FILENAME_MAX, "%s%s", to_name, suffix); 975 } 976 977 (void)rename(to_name, bname); 978 } 979 980 /* 981 * install_dir -- 982 * build directory hierarchy 983 */ 984 void 985 install_dir(char *path, u_int flags) 986 { 987 char *p; 988 struct stat sb; 989 int ch; 990 991 for (p = path;; ++p) 992 if (!*p || (p != path && *p == '/')) { 993 ch = *p; 994 *p = '\0'; 995 if (stat(path, &sb)) { 996 if (errno != ENOENT || mkdir(path, 0777) < 0) { 997 err(1, "%s: mkdir", path); 998 } 999 } 1000 if (!(*p = ch)) 1001 break; 1002 } 1003 1004 if (afterinstallcmd != NULL) 1005 afterinstall(afterinstallcmd, path, 0); 1006 1007 if (!dounpriv && ( 1008 ((flags & (HASUID | HASGID)) && chown(path, uid, gid) == -1) 1009 || chmod(path, mode) == -1 )) { 1010 warn("%s: chown/chmod", path); 1011 } 1012 metadata_log(path, "dir", NULL, NULL, NULL); 1013 } 1014 1015 /* 1016 * metadata_log -- 1017 * if metafp is not NULL, output mtree(8) full path name and settings to 1018 * metafp, to allow permissions to be set correctly by other tools. 1019 */ 1020 void 1021 metadata_log(const char *path, const char *type, struct timeval *tv, 1022 const char *link, const char *digestresult) 1023 { 1024 static const char extra[] = { ' ', '\t', '\n', '\\', '#', '\0' }; 1025 const char *p; 1026 char *buf; 1027 size_t destlen; 1028 struct flock metalog_lock; 1029 1030 if (!metafp) 1031 return; 1032 buf = (char *)malloc(4 * strlen(path) + 1); /* buf for strsvis(3) */ 1033 if (buf == NULL) { 1034 warnx("%s", strerror(ENOMEM)); 1035 return; 1036 } 1037 /* lock log file */ 1038 metalog_lock.l_start = 0; 1039 metalog_lock.l_len = 0; 1040 metalog_lock.l_whence = SEEK_SET; 1041 metalog_lock.l_type = F_WRLCK; 1042 if (fcntl(fileno(metafp), F_SETLKW, &metalog_lock) == -1) { 1043 warn("can't lock %s", metafile); 1044 return; 1045 } 1046 1047 p = path; /* remove destdir */ 1048 if (destdir) { 1049 destlen = strlen(destdir); 1050 if (strncmp(p, destdir, destlen) == 0 && 1051 (p[destlen] == '/' || p[destlen] == '\0')) 1052 p += destlen; 1053 } 1054 while (*p && *p == '/') /* remove leading /s */ 1055 p++; 1056 strsvis(buf, p, VIS_CSTYLE, extra); /* encode name */ 1057 p = buf; 1058 /* print details */ 1059 fprintf(metafp, ".%s%s type=%s mode=%#o", *p ? "/" : "", p, type, mode); 1060 if (link) 1061 fprintf(metafp, " link=%s", link); 1062 if (owner) 1063 fprintf(metafp, " uname=%s", owner); 1064 if (group) 1065 fprintf(metafp, " gname=%s", group); 1066 if (fflags) 1067 fprintf(metafp, " flags=%s", fflags); 1068 if (tags) 1069 fprintf(metafp, " tags=%s", tags); 1070 if (tv != NULL && dopreserve) 1071 fprintf(metafp, " time=%ld.%ld", tv[1].tv_sec, tv[1].tv_usec); 1072 if (digestresult && digest) 1073 fprintf(metafp, " %s=%s", digest, digestresult); 1074 fputc('\n', metafp); 1075 fflush(metafp); /* flush output */ 1076 /* unlock log file */ 1077 metalog_lock.l_type = F_UNLCK; 1078 if (fcntl(fileno(metafp), F_SETLKW, &metalog_lock) == -1) { 1079 warn("can't unlock %s", metafile); 1080 } 1081 free(buf); 1082 } 1083 1084 /* 1085 * xbasename -- 1086 * libc basename(3) that returns a pointer to a static buffer 1087 * instead of overwriting that passed-in string. 1088 */ 1089 char * 1090 xbasename(char *path) 1091 { 1092 static char tmp[MAXPATHLEN]; 1093 1094 (void)strlcpy(tmp, path, sizeof(tmp)); 1095 return (basename(tmp)); 1096 } 1097 1098 /* 1099 * xdirname -- 1100 * libc dirname(3) that returns a pointer to a static buffer 1101 * instead of overwriting that passed-in string. 1102 */ 1103 char * 1104 xdirname(char *path) 1105 { 1106 static char tmp[MAXPATHLEN]; 1107 1108 (void)strlcpy(tmp, path, sizeof(tmp)); 1109 return (dirname(tmp)); 1110 } 1111 1112 /* 1113 * usage -- 1114 * print a usage message and die 1115 */ 1116 void 1117 usage(void) 1118 { 1119 const char *prog; 1120 1121 prog = getprogname(); 1122 1123 (void)fprintf(stderr, 1124 "usage: %s [-Ubcprs] [-M log] [-D dest] [-T tags] [-B suffix]\n" 1125 " [-a aftercmd] [-f flags] [-m mode] [-N dbdir] [-o owner] [-g group] \n" 1126 " [-l linkflags] [-h hash] [-S stripflags] file1 file2\n" 1127 " %s [-Ubcprs] [-M log] [-D dest] [-T tags] [-B suffix]\n" 1128 " [-a aftercmd] [-f flags] [-m mode] [-N dbdir] [-o owner] [-g group]\n" 1129 " [-l linkflags] [-h hash] [-S stripflags] file1 ... fileN directory\n" 1130 " %s -d [-Up] [-M log] [-D dest] [-T tags] [-a aftercmd] [-m mode]\n" 1131 " [-N dbdir] [-o owner] [-g group] directory ...\n", 1132 prog, prog, prog); 1133 exit(1); 1134 } 1135
Indexes created Sun Sep 28 16:09:52 GMT 2025