1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 2012, 2013 SRI International 5 * Copyright (c) 1987, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 #ifndef lint 34 static const char copyright[] = 35 "@(#) Copyright (c) 1987, 1993\n\ 36 The Regents of the University of California. All rights reserved.\n"; 37 #endif /* not lint */ 38 39 #if 0 40 #ifndef lint 41 static char sccsid[] = "@(#)xinstall.c 8.1 (Berkeley) 7/21/93"; 42 #endif /* not lint */ 43 #endif 44 45 #include <sys/cdefs.h> 46 __FBSDID("$FreeBSD$"); 47 48 #include <sys/param.h> 49 #include <sys/mman.h> 50 #include <sys/mount.h> 51 #include <sys/stat.h> 52 #include <sys/time.h> 53 #include <sys/wait.h> 54 55 #include <err.h> 56 #include <errno.h> 57 #include <fcntl.h> 58 #include <grp.h> 59 #include <libgen.h> 60 #include <md5.h> 61 #include <paths.h> 62 #include <pwd.h> 63 #include <ripemd.h> 64 #include <sha.h> 65 #include <sha256.h> 66 #include <sha512.h> 67 #include <spawn.h> 68 #include <stdint.h> 69 #include <stdio.h> 70 #include <stdlib.h> 71 #include <string.h> 72 #include <sysexits.h> 73 #include <unistd.h> 74 #include <vis.h> 75 76 #include "mtree.h" 77 78 #define MAX_CMP_SIZE (16 * 1024 * 1024) 79 80 #define LN_ABSOLUTE 0x01 81 #define LN_RELATIVE 0x02 82 #define LN_HARD 0x04 83 #define LN_SYMBOLIC 0x08 84 #define LN_MIXED 0x10 85 86 #define DIRECTORY 0x01 /* Tell install it's a directory. */ 87 #define SETFLAGS 0x02 /* Tell install to set flags. */ 88 #define NOCHANGEBITS (UF_IMMUTABLE | UF_APPEND | SF_IMMUTABLE | SF_APPEND) 89 #define BACKUP_SUFFIX ".old" 90 91 typedef union { 92 MD5_CTX MD5; 93 RIPEMD160_CTX RIPEMD160; 94 SHA1_CTX SHA1; 95 SHA256_CTX SHA256; 96 SHA512_CTX SHA512; 97 } DIGEST_CTX; 98 99 static enum { 100 DIGEST_NONE = 0, 101 DIGEST_MD5, 102 DIGEST_RIPEMD160, 103 DIGEST_SHA1, 104 DIGEST_SHA256, 105 DIGEST_SHA512, 106 } digesttype = DIGEST_NONE; 107 108 extern char **environ; 109 110 static gid_t gid; 111 static uid_t uid; 112 static int dobackup, docompare, dodir, dolink, dopreserve, dostrip, dounpriv, 113 safecopy, verbose; 114 static int haveopt_f, haveopt_g, haveopt_m, haveopt_o; 115 static mode_t mode = S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH; 116 static FILE *metafp; 117 static const char *group, *owner; 118 static const char *suffix = BACKUP_SUFFIX; 119 static char *destdir, *digest, *fflags, *metafile, *tags; 120 121 static int compare(int, const char *, size_t, int, const char *, size_t, 122 char **); 123 static char *copy(int, const char *, int, const char *, off_t); 124 static int create_newfile(const char *, int, struct stat *); 125 static int create_tempfile(const char *, char *, size_t); 126 static char *quiet_mktemp(char *template); 127 static char *digest_file(const char *); 128 static void digest_init(DIGEST_CTX *); 129 static void digest_update(DIGEST_CTX *, const char *, size_t); 130 static char *digest_end(DIGEST_CTX *, char *); 131 static int do_link(const char *, const char *, const struct stat *); 132 static void do_symlink(const char *, const char *, const struct stat *); 133 static void makelink(const char *, const char *, const struct stat *); 134 static void install(const char *, const char *, u_long, u_int); 135 static void install_dir(char *); 136 static void metadata_log(const char *, const char *, struct timespec *, 137 const char *, const char *, off_t); 138 static int parseid(const char *, id_t *); 139 static void strip(const char *); 140 static int trymmap(int); 141 static void usage(void); 142 143 int 144 main(int argc, char *argv[]) 145 { 146 struct stat from_sb, to_sb; 147 mode_t *set; 148 u_long fset; 149 int ch, no_target; 150 u_int iflags; 151 char *p; 152 const char *to_name; 153 154 fset = 0; 155 iflags = 0; 156 group = owner = NULL; 157 while ((ch = getopt(argc, argv, "B:bCcD:df:g:h:l:M:m:N:o:pSsT:Uv")) != 158 -1) 159 switch((char)ch) { 160 case 'B': 161 suffix = optarg; 162 /* FALLTHROUGH */ 163 case 'b': 164 dobackup = 1; 165 break; 166 case 'C': 167 docompare = 1; 168 break; 169 case 'c': 170 /* For backwards compatibility. */ 171 break; 172 case 'D': 173 destdir = optarg; 174 break; 175 case 'd': 176 dodir = 1; 177 break; 178 case 'f': 179 haveopt_f = 1; 180 fflags = optarg; 181 break; 182 case 'g': 183 haveopt_g = 1; 184 group = optarg; 185 break; 186 case 'h': 187 digest = optarg; 188 break; 189 case 'l': 190 for (p = optarg; *p != '\0'; p++) 191 switch (*p) { 192 case 's': 193 dolink &= ~(LN_HARD|LN_MIXED); 194 dolink |= LN_SYMBOLIC; 195 break; 196 case 'h': 197 dolink &= ~(LN_SYMBOLIC|LN_MIXED); 198 dolink |= LN_HARD; 199 break; 200 case 'm': 201 dolink &= ~(LN_SYMBOLIC|LN_HARD); 202 dolink |= LN_MIXED; 203 break; 204 case 'a': 205 dolink &= ~LN_RELATIVE; 206 dolink |= LN_ABSOLUTE; 207 break; 208 case 'r': 209 dolink &= ~LN_ABSOLUTE; 210 dolink |= LN_RELATIVE; 211 break; 212 default: 213 errx(1, "%c: invalid link type", *p); 214 /* NOTREACHED */ 215 } 216 break; 217 case 'M': 218 metafile = optarg; 219 break; 220 case 'm': 221 haveopt_m = 1; 222 if (!(set = setmode(optarg))) 223 errx(EX_USAGE, "invalid file mode: %s", 224 optarg); 225 mode = getmode(set, 0); 226 free(set); 227 break; 228 case 'N': 229 if (!setup_getid(optarg)) 230 err(EX_OSERR, "Unable to use user and group " 231 "databases in `%s'", optarg); 232 break; 233 case 'o': 234 haveopt_o = 1; 235 owner = optarg; 236 break; 237 case 'p': 238 docompare = dopreserve = 1; 239 break; 240 case 'S': 241 safecopy = 1; 242 break; 243 case 's': 244 dostrip = 1; 245 break; 246 case 'T': 247 tags = optarg; 248 break; 249 case 'U': 250 dounpriv = 1; 251 break; 252 case 'v': 253 verbose = 1; 254 break; 255 case '?': 256 default: 257 usage(); 258 } 259 argc -= optind; 260 argv += optind; 261 262 /* some options make no sense when creating directories */ 263 if (dostrip && dodir) { 264 warnx("-d and -s may not be specified together"); 265 usage(); 266 } 267 268 if (getenv("DONTSTRIP") != NULL) { 269 warnx("DONTSTRIP set - will not strip installed binaries"); 270 dostrip = 0; 271 } 272 273 /* must have at least two arguments, except when creating directories */ 274 if (argc == 0 || (argc == 1 && !dodir)) 275 usage(); 276 277 if (digest != NULL) { 278 if (strcmp(digest, "none") == 0) { 279 digesttype = DIGEST_NONE; 280 } else if (strcmp(digest, "md5") == 0) { 281 digesttype = DIGEST_MD5; 282 } else if (strcmp(digest, "rmd160") == 0) { 283 digesttype = DIGEST_RIPEMD160; 284 } else if (strcmp(digest, "sha1") == 0) { 285 digesttype = DIGEST_SHA1; 286 } else if (strcmp(digest, "sha256") == 0) { 287 digesttype = DIGEST_SHA256; 288 } else if (strcmp(digest, "sha512") == 0) { 289 digesttype = DIGEST_SHA512; 290 } else { 291 warnx("unknown digest `%s'", digest); 292 usage(); 293 } 294 } 295 296 /* need to make a temp copy so we can compare stripped version */ 297 if (docompare && dostrip) 298 safecopy = 1; 299 300 /* get group and owner id's */ 301 if (group != NULL && !dounpriv) { 302 if (gid_from_group(group, &gid) == -1) { 303 id_t id; 304 if (!parseid(group, &id)) 305 errx(1, "unknown group %s", group); 306 gid = id; 307 } 308 } else 309 gid = (gid_t)-1; 310 311 if (owner != NULL && !dounpriv) { 312 if (uid_from_user(owner, &uid) == -1) { 313 id_t id; 314 if (!parseid(owner, &id)) 315 errx(1, "unknown user %s", owner); 316 uid = id; 317 } 318 } else 319 uid = (uid_t)-1; 320 321 if (fflags != NULL && !dounpriv) { 322 if (strtofflags(&fflags, &fset, NULL)) 323 errx(EX_USAGE, "%s: invalid flag", fflags); 324 iflags |= SETFLAGS; 325 } 326 327 if (metafile != NULL) { 328 if ((metafp = fopen(metafile, "a")) == NULL) 329 warn("open %s", metafile); 330 } else 331 digesttype = DIGEST_NONE; 332 333 if (dodir) { 334 for (; *argv != NULL; ++argv) 335 install_dir(*argv); 336 exit(EX_OK); 337 /* NOTREACHED */ 338 } 339 340 to_name = argv[argc - 1]; 341 no_target = stat(to_name, &to_sb); 342 if (!no_target && S_ISDIR(to_sb.st_mode)) { 343 if (dolink & LN_SYMBOLIC) { 344 if (lstat(to_name, &to_sb) != 0) 345 err(EX_OSERR, "%s vanished", to_name); 346 if (S_ISLNK(to_sb.st_mode)) { 347 if (argc != 2) { 348 errno = ENOTDIR; 349 err(EX_USAGE, "%s", to_name); 350 } 351 install(*argv, to_name, fset, iflags); 352 exit(EX_OK); 353 } 354 } 355 for (; *argv != to_name; ++argv) 356 install(*argv, to_name, fset, iflags | DIRECTORY); 357 exit(EX_OK); 358 /* NOTREACHED */ 359 } 360 361 /* can't do file1 file2 directory/file */ 362 if (argc != 2) { 363 if (no_target) 364 warnx("target directory `%s' does not exist", 365 argv[argc - 1]); 366 else 367 warnx("target `%s' is not a directory", 368 argv[argc - 1]); 369 usage(); 370 } 371 372 if (!no_target && !dolink) { 373 if (stat(*argv, &from_sb)) 374 err(EX_OSERR, "%s", *argv); 375 if (!S_ISREG(to_sb.st_mode)) { 376 errno = EFTYPE; 377 err(EX_OSERR, "%s", to_name); 378 } 379 if (to_sb.st_dev == from_sb.st_dev && 380 to_sb.st_ino == from_sb.st_ino) 381 errx(EX_USAGE, 382 "%s and %s are the same file", *argv, to_name); 383 } 384 install(*argv, to_name, fset, iflags); 385 exit(EX_OK); 386 /* NOTREACHED */ 387 } 388 389 static char * 390 digest_file(const char *name) 391 { 392 393 switch (digesttype) { 394 case DIGEST_MD5: 395 return (MD5File(name, NULL)); 396 case DIGEST_RIPEMD160: 397 return (RIPEMD160_File(name, NULL)); 398 case DIGEST_SHA1: 399 return (SHA1_File(name, NULL)); 400 case DIGEST_SHA256: 401 return (SHA256_File(name, NULL)); 402 case DIGEST_SHA512: 403 return (SHA512_File(name, NULL)); 404 default: 405 return (NULL); 406 } 407 } 408 409 static void 410 digest_init(DIGEST_CTX *c) 411 { 412 413 switch (digesttype) { 414 case DIGEST_NONE: 415 break; 416 case DIGEST_MD5: 417 MD5Init(&(c->MD5)); 418 break; 419 case DIGEST_RIPEMD160: 420 RIPEMD160_Init(&(c->RIPEMD160)); 421 break; 422 case DIGEST_SHA1: 423 SHA1_Init(&(c->SHA1)); 424 break; 425 case DIGEST_SHA256: 426 SHA256_Init(&(c->SHA256)); 427 break; 428 case DIGEST_SHA512: 429 SHA512_Init(&(c->SHA512)); 430 break; 431 } 432 } 433 434 static void 435 digest_update(DIGEST_CTX *c, const char *data, size_t len) 436 { 437 438 switch (digesttype) { 439 case DIGEST_NONE: 440 break; 441 case DIGEST_MD5: 442 MD5Update(&(c->MD5), data, len); 443 break; 444 case DIGEST_RIPEMD160: 445 RIPEMD160_Update(&(c->RIPEMD160), data, len); 446 break; 447 case DIGEST_SHA1: 448 SHA1_Update(&(c->SHA1), data, len); 449 break; 450 case DIGEST_SHA256: 451 SHA256_Update(&(c->SHA256), data, len); 452 break; 453 case DIGEST_SHA512: 454 SHA512_Update(&(c->SHA512), data, len); 455 break; 456 } 457 } 458 459 static char * 460 digest_end(DIGEST_CTX *c, char *buf) 461 { 462 463 switch (digesttype) { 464 case DIGEST_MD5: 465 return (MD5End(&(c->MD5), buf)); 466 case DIGEST_RIPEMD160: 467 return (RIPEMD160_End(&(c->RIPEMD160), buf)); 468 case DIGEST_SHA1: 469 return (SHA1_End(&(c->SHA1), buf)); 470 case DIGEST_SHA256: 471 return (SHA256_End(&(c->SHA256), buf)); 472 case DIGEST_SHA512: 473 return (SHA512_End(&(c->SHA512), buf)); 474 default: 475 return (NULL); 476 } 477 } 478 479 /* 480 * parseid -- 481 * parse uid or gid from arg into id, returning non-zero if successful 482 */ 483 static int 484 parseid(const char *name, id_t *id) 485 { 486 char *ep; 487 errno = 0; 488 *id = (id_t)strtoul(name, &ep, 10); 489 if (errno || *ep != '\0') 490 return (0); 491 return (1); 492 } 493 494 /* 495 * quiet_mktemp -- 496 * mktemp implementation used mkstemp to avoid mktemp warnings. We 497 * really do need mktemp semantics here as we will be creating a link. 498 */ 499 static char * 500 quiet_mktemp(char *template) 501 { 502 int fd; 503 504 if ((fd = mkstemp(template)) == -1) 505 return (NULL); 506 close (fd); 507 if (unlink(template) == -1) 508 err(EX_OSERR, "unlink %s", template); 509 return (template); 510 } 511 512 /* 513 * do_link -- 514 * make a hard link, obeying dorename if set 515 * return -1 on failure 516 */ 517 static int 518 do_link(const char *from_name, const char *to_name, 519 const struct stat *target_sb) 520 { 521 char tmpl[MAXPATHLEN]; 522 int ret; 523 524 if (safecopy && target_sb != NULL) { 525 (void)snprintf(tmpl, sizeof(tmpl), "%s.inst.XXXXXX", to_name); 526 /* This usage is safe. */ 527 if (quiet_mktemp(tmpl) == NULL) 528 err(EX_OSERR, "%s: mktemp", tmpl); 529 ret = link(from_name, tmpl); 530 if (ret == 0) { 531 if (target_sb->st_mode & S_IFDIR && rmdir(to_name) == 532 -1) { 533 unlink(tmpl); 534 err(EX_OSERR, "%s", to_name); 535 } 536 #if HAVE_STRUCT_STAT_ST_FLAGS 537 if (target_sb->st_flags & NOCHANGEBITS) 538 (void)chflags(to_name, target_sb->st_flags & 539 ~NOCHANGEBITS); 540 #endif 541 if (verbose) 542 printf("install: link %s -> %s\n", 543 from_name, to_name); 544 ret = rename(tmpl, to_name); 545 /* 546 * If rename has posix semantics, then the temporary 547 * file may still exist when from_name and to_name point 548 * to the same file, so unlink it unconditionally. 549 */ 550 (void)unlink(tmpl); 551 } 552 return (ret); 553 } else { 554 if (verbose) 555 printf("install: link %s -> %s\n", 556 from_name, to_name); 557 return (link(from_name, to_name)); 558 } 559 } 560 561 /* 562 * do_symlink -- 563 * Make a symbolic link, obeying dorename if set. Exit on failure. 564 */ 565 static void 566 do_symlink(const char *from_name, const char *to_name, 567 const struct stat *target_sb) 568 { 569 char tmpl[MAXPATHLEN]; 570 571 if (safecopy && target_sb != NULL) { 572 (void)snprintf(tmpl, sizeof(tmpl), "%s.inst.XXXXXX", to_name); 573 /* This usage is safe. */ 574 if (quiet_mktemp(tmpl) == NULL) 575 err(EX_OSERR, "%s: mktemp", tmpl); 576 577 if (symlink(from_name, tmpl) == -1) 578 err(EX_OSERR, "symlink %s -> %s", from_name, tmpl); 579 580 if (target_sb->st_mode & S_IFDIR && rmdir(to_name) == -1) { 581 (void)unlink(tmpl); 582 err(EX_OSERR, "%s", to_name); 583 } 584 #if HAVE_STRUCT_STAT_ST_FLAGS 585 if (target_sb->st_flags & NOCHANGEBITS) 586 (void)chflags(to_name, target_sb->st_flags & 587 ~NOCHANGEBITS); 588 #endif 589 if (verbose) 590 printf("install: symlink %s -> %s\n", 591 from_name, to_name); 592 if (rename(tmpl, to_name) == -1) { 593 /* Remove temporary link before exiting. */ 594 (void)unlink(tmpl); 595 err(EX_OSERR, "%s: rename", to_name); 596 } 597 } else { 598 if (verbose) 599 printf("install: symlink %s -> %s\n", 600 from_name, to_name); 601 if (symlink(from_name, to_name) == -1) 602 err(EX_OSERR, "symlink %s -> %s", from_name, to_name); 603 } 604 } 605 606 /* 607 * makelink -- 608 * make a link from source to destination 609 */ 610 static void 611 makelink(const char *from_name, const char *to_name, 612 const struct stat *target_sb) 613 { 614 char src[MAXPATHLEN], dst[MAXPATHLEN], lnk[MAXPATHLEN]; 615 struct stat to_sb; 616 617 /* Try hard links first. */ 618 if (dolink & (LN_HARD|LN_MIXED)) { 619 if (do_link(from_name, to_name, target_sb) == -1) { 620 if ((dolink & LN_HARD) || errno != EXDEV) 621 err(EX_OSERR, "link %s -> %s", from_name, to_name); 622 } else { 623 if (stat(to_name, &to_sb)) 624 err(EX_OSERR, "%s: stat", to_name); 625 if (S_ISREG(to_sb.st_mode)) { 626 /* 627 * XXX: hard links to anything other than 628 * plain files are not metalogged 629 */ 630 int omode; 631 const char *oowner, *ogroup; 632 char *offlags; 633 char *dres; 634 635 /* 636 * XXX: use underlying perms, unless 637 * overridden on command line. 638 */ 639 omode = mode; 640 if (!haveopt_m) 641 mode = (to_sb.st_mode & 0777); 642 oowner = owner; 643 if (!haveopt_o) 644 owner = NULL; 645 ogroup = group; 646 if (!haveopt_g) 647 group = NULL; 648 offlags = fflags; 649 if (!haveopt_f) 650 fflags = NULL; 651 dres = digest_file(from_name); 652 metadata_log(to_name, "file", NULL, NULL, 653 dres, to_sb.st_size); 654 free(dres); 655 mode = omode; 656 owner = oowner; 657 group = ogroup; 658 fflags = offlags; 659 } 660 return; 661 } 662 } 663 664 /* Symbolic links. */ 665 if (dolink & LN_ABSOLUTE) { 666 /* Convert source path to absolute. */ 667 if (realpath(from_name, src) == NULL) 668 err(EX_OSERR, "%s: realpath", from_name); 669 do_symlink(src, to_name, target_sb); 670 /* XXX: src may point outside of destdir */ 671 metadata_log(to_name, "link", NULL, src, NULL, 0); 672 return; 673 } 674 675 if (dolink & LN_RELATIVE) { 676 char *to_name_copy, *cp, *d, *s; 677 678 if (*from_name != '/') { 679 /* this is already a relative link */ 680 do_symlink(from_name, to_name, target_sb); 681 /* XXX: from_name may point outside of destdir. */ 682 metadata_log(to_name, "link", NULL, from_name, NULL, 0); 683 return; 684 } 685 686 /* Resolve pathnames. */ 687 if (realpath(from_name, src) == NULL) 688 err(EX_OSERR, "%s: realpath", from_name); 689 690 /* 691 * The last component of to_name may be a symlink, 692 * so use realpath to resolve only the directory. 693 */ 694 to_name_copy = strdup(to_name); 695 if (to_name_copy == NULL) 696 err(EX_OSERR, "%s: strdup", to_name); 697 cp = dirname(to_name_copy); 698 if (realpath(cp, dst) == NULL) 699 err(EX_OSERR, "%s: realpath", cp); 700 /* .. and add the last component. */ 701 if (strcmp(dst, "/") != 0) { 702 if (strlcat(dst, "/", sizeof(dst)) > sizeof(dst)) 703 errx(1, "resolved pathname too long"); 704 } 705 strcpy(to_name_copy, to_name); 706 cp = basename(to_name_copy); 707 if (strlcat(dst, cp, sizeof(dst)) > sizeof(dst)) 708 errx(1, "resolved pathname too long"); 709 free(to_name_copy); 710 711 /* Trim common path components. */ 712 for (s = src, d = dst; *s == *d; s++, d++) 713 continue; 714 while (*s != '/') 715 s--, d--; 716 717 /* Count the number of directories we need to backtrack. */ 718 for (++d, lnk[0] = '\0'; *d; d++) 719 if (*d == '/') 720 (void)strlcat(lnk, "../", sizeof(lnk)); 721 722 (void)strlcat(lnk, ++s, sizeof(lnk)); 723 724 do_symlink(lnk, to_name, target_sb); 725 /* XXX: Link may point outside of destdir. */ 726 metadata_log(to_name, "link", NULL, lnk, NULL, 0); 727 return; 728 } 729 730 /* 731 * If absolute or relative was not specified, try the names the 732 * user provided. 733 */ 734 do_symlink(from_name, to_name, target_sb); 735 /* XXX: from_name may point outside of destdir. */ 736 metadata_log(to_name, "link", NULL, from_name, NULL, 0); 737 } 738 739 /* 740 * install -- 741 * build a path name and install the file 742 */ 743 static void 744 install(const char *from_name, const char *to_name, u_long fset, u_int flags) 745 { 746 struct stat from_sb, temp_sb, to_sb; 747 struct timespec tsb[2]; 748 int devnull, files_match, from_fd, serrno, target; 749 int tempcopy, temp_fd, to_fd; 750 char backup[MAXPATHLEN], *p, pathbuf[MAXPATHLEN], tempfile[MAXPATHLEN]; 751 char *digestresult; 752 753 files_match = 0; 754 from_fd = -1; 755 to_fd = -1; 756 757 /* If try to install NULL file to a directory, fails. */ 758 if (flags & DIRECTORY || strcmp(from_name, _PATH_DEVNULL)) { 759 if (!dolink) { 760 if (stat(from_name, &from_sb)) 761 err(EX_OSERR, "%s", from_name); 762 if (!S_ISREG(from_sb.st_mode)) { 763 errno = EFTYPE; 764 err(EX_OSERR, "%s", from_name); 765 } 766 } 767 /* Build the target path. */ 768 if (flags & DIRECTORY) { 769 (void)snprintf(pathbuf, sizeof(pathbuf), "%s%s%s", 770 to_name, 771 to_name[strlen(to_name) - 1] == '/' ? "" : "/", 772 (p = strrchr(from_name, '/')) ? ++p : from_name); 773 to_name = pathbuf; 774 } 775 devnull = 0; 776 } else { 777 devnull = 1; 778 } 779 780 target = (lstat(to_name, &to_sb) == 0); 781 782 if (dolink) { 783 if (target && !safecopy) { 784 if (to_sb.st_mode & S_IFDIR && rmdir(to_name) == -1) 785 err(EX_OSERR, "%s", to_name); 786 #if HAVE_STRUCT_STAT_ST_FLAGS 787 if (to_sb.st_flags & NOCHANGEBITS) 788 (void)chflags(to_name, 789 to_sb.st_flags & ~NOCHANGEBITS); 790 #endif 791 unlink(to_name); 792 } 793 makelink(from_name, to_name, target ? &to_sb : NULL); 794 return; 795 } 796 797 if (target && !S_ISREG(to_sb.st_mode) && !S_ISLNK(to_sb.st_mode)) { 798 errno = EFTYPE; 799 warn("%s", to_name); 800 return; 801 } 802 803 /* Only copy safe if the target exists. */ 804 tempcopy = safecopy && target; 805 806 if (!devnull && (from_fd = open(from_name, O_RDONLY, 0)) < 0) 807 err(EX_OSERR, "%s", from_name); 808 809 /* If we don't strip, we can compare first. */ 810 if (docompare && !dostrip && target && S_ISREG(to_sb.st_mode)) { 811 if ((to_fd = open(to_name, O_RDONLY, 0)) < 0) 812 err(EX_OSERR, "%s", to_name); 813 if (devnull) 814 files_match = to_sb.st_size == 0; 815 else 816 files_match = !(compare(from_fd, from_name, 817 (size_t)from_sb.st_size, to_fd, 818 to_name, (size_t)to_sb.st_size, &digestresult)); 819 820 /* Close "to" file unless we match. */ 821 if (!files_match) 822 (void)close(to_fd); 823 } 824 825 if (!files_match) { 826 if (tempcopy) { 827 to_fd = create_tempfile(to_name, tempfile, 828 sizeof(tempfile)); 829 if (to_fd < 0) 830 err(EX_OSERR, "%s", tempfile); 831 } else { 832 if ((to_fd = create_newfile(to_name, target, 833 &to_sb)) < 0) 834 err(EX_OSERR, "%s", to_name); 835 if (verbose) 836 (void)printf("install: %s -> %s\n", 837 from_name, to_name); 838 } 839 if (!devnull) 840 digestresult = copy(from_fd, from_name, to_fd, 841 tempcopy ? tempfile : to_name, from_sb.st_size); 842 else 843 digestresult = NULL; 844 } 845 846 if (dostrip) { 847 strip(tempcopy ? tempfile : to_name); 848 849 /* 850 * Re-open our fd on the target, in case we used a strip 851 * that does not work in-place -- like GNU binutils strip. 852 */ 853 close(to_fd); 854 to_fd = open(tempcopy ? tempfile : to_name, O_RDONLY, 0); 855 if (to_fd < 0) 856 err(EX_OSERR, "stripping %s", to_name); 857 } 858 859 /* 860 * Compare the stripped temp file with the target. 861 */ 862 if (docompare && dostrip && target && S_ISREG(to_sb.st_mode)) { 863 temp_fd = to_fd; 864 865 /* Re-open to_fd using the real target name. */ 866 if ((to_fd = open(to_name, O_RDONLY, 0)) < 0) 867 err(EX_OSERR, "%s", to_name); 868 869 if (fstat(temp_fd, &temp_sb)) { 870 serrno = errno; 871 (void)unlink(tempfile); 872 errno = serrno; 873 err(EX_OSERR, "%s", tempfile); 874 } 875 876 if (compare(temp_fd, tempfile, (size_t)temp_sb.st_size, to_fd, 877 to_name, (size_t)to_sb.st_size, &digestresult) 878 == 0) { 879 /* 880 * If target has more than one link we need to 881 * replace it in order to snap the extra links. 882 * Need to preserve target file times, though. 883 */ 884 if (to_sb.st_nlink != 1) { 885 tsb[0] = to_sb.st_atim; 886 tsb[1] = to_sb.st_mtim; 887 (void)utimensat(AT_FDCWD, tempfile, tsb, 0); 888 } else { 889 files_match = 1; 890 (void)unlink(tempfile); 891 } 892 (void) close(temp_fd); 893 } 894 } else if (dostrip) 895 digestresult = digest_file(tempfile); 896 897 /* 898 * Move the new file into place if doing a safe copy 899 * and the files are different (or just not compared). 900 */ 901 if (tempcopy && !files_match) { 902 #if HAVE_STRUCT_STAT_ST_FLAGS 903 /* Try to turn off the immutable bits. */ 904 if (to_sb.st_flags & NOCHANGEBITS) 905 (void)chflags(to_name, to_sb.st_flags & ~NOCHANGEBITS); 906 #endif 907 if (dobackup) { 908 if ((size_t)snprintf(backup, MAXPATHLEN, "%s%s", to_name, 909 suffix) != strlen(to_name) + strlen(suffix)) { 910 unlink(tempfile); 911 errx(EX_OSERR, "%s: backup filename too long", 912 to_name); 913 } 914 if (verbose) 915 (void)printf("install: %s -> %s\n", to_name, backup); 916 if (unlink(backup) < 0 && errno != ENOENT) { 917 serrno = errno; 918 #if HAVE_STRUCT_STAT_ST_FLAGS 919 if (to_sb.st_flags & NOCHANGEBITS) 920 (void)chflags(to_name, to_sb.st_flags); 921 #endif 922 unlink(tempfile); 923 errno = serrno; 924 err(EX_OSERR, "unlink: %s", backup); 925 } 926 if (link(to_name, backup) < 0) { 927 serrno = errno; 928 unlink(tempfile); 929 #if HAVE_STRUCT_STAT_ST_FLAGS 930 if (to_sb.st_flags & NOCHANGEBITS) 931 (void)chflags(to_name, to_sb.st_flags); 932 #endif 933 errno = serrno; 934 err(EX_OSERR, "link: %s to %s", to_name, 935 backup); 936 } 937 } 938 if (verbose) 939 (void)printf("install: %s -> %s\n", from_name, to_name); 940 if (rename(tempfile, to_name) < 0) { 941 serrno = errno; 942 unlink(tempfile); 943 errno = serrno; 944 err(EX_OSERR, "rename: %s to %s", 945 tempfile, to_name); 946 } 947 948 /* Re-open to_fd so we aren't hosed by the rename(2). */ 949 (void) close(to_fd); 950 if ((to_fd = open(to_name, O_RDONLY, 0)) < 0) 951 err(EX_OSERR, "%s", to_name); 952 } 953 954 /* 955 * Preserve the timestamp of the source file if necessary. 956 */ 957 if (dopreserve && !files_match && !devnull) { 958 tsb[0] = from_sb.st_atim; 959 tsb[1] = from_sb.st_mtim; 960 (void)utimensat(AT_FDCWD, to_name, tsb, 0); 961 } 962 963 if (fstat(to_fd, &to_sb) == -1) { 964 serrno = errno; 965 (void)unlink(to_name); 966 errno = serrno; 967 err(EX_OSERR, "%s", to_name); 968 } 969 970 /* 971 * Set owner, group, mode for target; do the chown first, 972 * chown may lose the setuid bits. 973 */ 974 if (!dounpriv && ((gid != (gid_t)-1 && gid != to_sb.st_gid) || 975 (uid != (uid_t)-1 && uid != to_sb.st_uid) || 976 (mode != (to_sb.st_mode & ALLPERMS)))) { 977 #if HAVE_STRUCT_STAT_ST_FLAGS 978 /* Try to turn off the immutable bits. */ 979 if (to_sb.st_flags & NOCHANGEBITS) 980 (void)fchflags(to_fd, to_sb.st_flags & ~NOCHANGEBITS); 981 #endif 982 } 983 984 if (!dounpriv & 985 (gid != (gid_t)-1 && gid != to_sb.st_gid) || 986 (uid != (uid_t)-1 && uid != to_sb.st_uid)) 987 if (fchown(to_fd, uid, gid) == -1) { 988 serrno = errno; 989 (void)unlink(to_name); 990 errno = serrno; 991 err(EX_OSERR,"%s: chown/chgrp", to_name); 992 } 993 994 if (mode != (to_sb.st_mode & ALLPERMS)) { 995 if (fchmod(to_fd, 996 dounpriv ? mode & (S_IRWXU|S_IRWXG|S_IRWXO) : mode)) { 997 serrno = errno; 998 (void)unlink(to_name); 999 errno = serrno; 1000 err(EX_OSERR, "%s: chmod", to_name); 1001 } 1002 } 1003 #if HAVE_STRUCT_STAT_ST_FLAGS 1004 /* 1005 * If provided a set of flags, set them, otherwise, preserve the 1006 * flags, except for the dump flag. 1007 * NFS does not support flags. Ignore EOPNOTSUPP flags if we're just 1008 * trying to turn off UF_NODUMP. If we're trying to set real flags, 1009 * then warn if the fs doesn't support it, otherwise fail. 1010 */ 1011 if (!dounpriv & !devnull && (flags & SETFLAGS || 1012 (from_sb.st_flags & ~UF_NODUMP) != to_sb.st_flags) && 1013 fchflags(to_fd, 1014 flags & SETFLAGS ? fset : from_sb.st_flags & ~UF_NODUMP)) { 1015 if (flags & SETFLAGS) { 1016 if (errno == EOPNOTSUPP) 1017 warn("%s: chflags", to_name); 1018 else { 1019 serrno = errno; 1020 (void)unlink(to_name); 1021 errno = serrno; 1022 err(EX_OSERR, "%s: chflags", to_name); 1023 } 1024 } 1025 } 1026 #endif 1027 1028 (void)close(to_fd); 1029 if (!devnull) 1030 (void)close(from_fd); 1031 1032 metadata_log(to_name, "file", tsb, NULL, digestresult, to_sb.st_size); 1033 free(digestresult); 1034 } 1035 1036 /* 1037 * compare -- 1038 * compare two files; non-zero means files differ 1039 */ 1040 static int 1041 compare(int from_fd, const char *from_name __unused, size_t from_len, 1042 int to_fd, const char *to_name __unused, size_t to_len, 1043 char **dresp) 1044 { 1045 char *p, *q; 1046 int rv; 1047 int done_compare; 1048 DIGEST_CTX ctx; 1049 1050 rv = 0; 1051 if (from_len != to_len) 1052 return 1; 1053 1054 if (from_len <= MAX_CMP_SIZE) { 1055 if (dresp != NULL) 1056 digest_init(&ctx); 1057 done_compare = 0; 1058 if (trymmap(from_fd) && trymmap(to_fd)) { 1059 p = mmap(NULL, from_len, PROT_READ, MAP_SHARED, 1060 from_fd, (off_t)0); 1061 if (p == MAP_FAILED) 1062 goto out; 1063 q = mmap(NULL, from_len, PROT_READ, MAP_SHARED, 1064 to_fd, (off_t)0); 1065 if (q == MAP_FAILED) { 1066 munmap(p, from_len); 1067 goto out; 1068 } 1069 1070 rv = memcmp(p, q, from_len); 1071 if (dresp != NULL) 1072 digest_update(&ctx, p, from_len); 1073 munmap(p, from_len); 1074 munmap(q, from_len); 1075 done_compare = 1; 1076 } 1077 out: 1078 if (!done_compare) { 1079 char buf1[MAXBSIZE]; 1080 char buf2[MAXBSIZE]; 1081 int n1, n2; 1082 1083 rv = 0; 1084 lseek(from_fd, 0, SEEK_SET); 1085 lseek(to_fd, 0, SEEK_SET); 1086 while (rv == 0) { 1087 n1 = read(from_fd, buf1, sizeof(buf1)); 1088 if (n1 == 0) 1089 break; /* EOF */ 1090 else if (n1 > 0) { 1091 n2 = read(to_fd, buf2, n1); 1092 if (n2 == n1) 1093 rv = memcmp(buf1, buf2, n1); 1094 else 1095 rv = 1; /* out of sync */ 1096 } else 1097 rv = 1; /* read failure */ 1098 digest_update(&ctx, buf1, n1); 1099 } 1100 lseek(from_fd, 0, SEEK_SET); 1101 lseek(to_fd, 0, SEEK_SET); 1102 } 1103 } else 1104 rv = 1; /* don't bother in this case */ 1105 1106 if (dresp != NULL) { 1107 if (rv == 0) 1108 *dresp = digest_end(&ctx, NULL); 1109 else 1110 (void)digest_end(&ctx, NULL); 1111 } 1112 1113 return rv; 1114 } 1115 1116 /* 1117 * create_tempfile -- 1118 * create a temporary file based on path and open it 1119 */ 1120 static int 1121 create_tempfile(const char *path, char *temp, size_t tsize) 1122 { 1123 char *p; 1124 1125 (void)strncpy(temp, path, tsize); 1126 temp[tsize - 1] = '\0'; 1127 if ((p = strrchr(temp, '/')) != NULL) 1128 p++; 1129 else 1130 p = temp; 1131 (void)strncpy(p, "INS@XXXX", &temp[tsize - 1] - p); 1132 temp[tsize - 1] = '\0'; 1133 return (mkstemp(temp)); 1134 } 1135 1136 /* 1137 * create_newfile -- 1138 * create a new file, overwriting an existing one if necessary 1139 */ 1140 static int 1141 create_newfile(const char *path, int target, struct stat *sbp) 1142 { 1143 char backup[MAXPATHLEN]; 1144 int saved_errno = 0; 1145 int newfd; 1146 1147 if (target) { 1148 /* 1149 * Unlink now... avoid ETXTBSY errors later. Try to turn 1150 * off the append/immutable bits -- if we fail, go ahead, 1151 * it might work. 1152 */ 1153 #if HAVE_STRUCT_STAT_ST_FLAGS 1154 if (sbp->st_flags & NOCHANGEBITS) 1155 (void)chflags(path, sbp->st_flags & ~NOCHANGEBITS); 1156 #endif 1157 1158 if (dobackup) { 1159 if ((size_t)snprintf(backup, MAXPATHLEN, "%s%s", 1160 path, suffix) != strlen(path) + strlen(suffix)) { 1161 saved_errno = errno; 1162 #if HAVE_STRUCT_STAT_ST_FLAGS 1163 if (sbp->st_flags & NOCHANGEBITS) 1164 (void)chflags(path, sbp->st_flags); 1165 #endif 1166 errno = saved_errno; 1167 errx(EX_OSERR, "%s: backup filename too long", 1168 path); 1169 } 1170 (void)snprintf(backup, MAXPATHLEN, "%s%s", 1171 path, suffix); 1172 if (verbose) 1173 (void)printf("install: %s -> %s\n", 1174 path, backup); 1175 if (rename(path, backup) < 0) { 1176 saved_errno = errno; 1177 #if HAVE_STRUCT_STAT_ST_FLAGS 1178 if (sbp->st_flags & NOCHANGEBITS) 1179 (void)chflags(path, sbp->st_flags); 1180 #endif 1181 errno = saved_errno; 1182 err(EX_OSERR, "rename: %s to %s", path, backup); 1183 } 1184 } else 1185 if (unlink(path) < 0) 1186 saved_errno = errno; 1187 } 1188 1189 newfd = open(path, O_CREAT | O_RDWR | O_TRUNC, S_IRUSR | S_IWUSR); 1190 if (newfd < 0 && saved_errno != 0) 1191 errno = saved_errno; 1192 return newfd; 1193 } 1194 1195 /* 1196 * copy -- 1197 * copy from one file to another 1198 */ 1199 static char * 1200 copy(int from_fd, const char *from_name, int to_fd, const char *to_name, 1201 off_t size) 1202 { 1203 int nr, nw; 1204 int serrno; 1205 char *p; 1206 char buf[MAXBSIZE]; 1207 int done_copy; 1208 DIGEST_CTX ctx; 1209 1210 /* Rewind file descriptors. */ 1211 if (lseek(from_fd, (off_t)0, SEEK_SET) == (off_t)-1) 1212 err(EX_OSERR, "lseek: %s", from_name); 1213 if (lseek(to_fd, (off_t)0, SEEK_SET) == (off_t)-1) 1214 err(EX_OSERR, "lseek: %s", to_name); 1215 1216 digest_init(&ctx); 1217 1218 /* 1219 * Mmap and write if less than 8M (the limit is so we don't totally 1220 * trash memory on big files. This is really a minor hack, but it 1221 * wins some CPU back. 1222 */ 1223 done_copy = 0; 1224 if (size <= 8 * 1048576 && trymmap(from_fd) && 1225 (p = mmap(NULL, (size_t)size, PROT_READ, MAP_SHARED, 1226 from_fd, (off_t)0)) != MAP_FAILED) { 1227 nw = write(to_fd, p, size); 1228 if (nw != size) { 1229 serrno = errno; 1230 (void)unlink(to_name); 1231 if (nw >= 0) { 1232 errx(EX_OSERR, 1233 "short write to %s: %jd bytes written, %jd bytes asked to write", 1234 to_name, (uintmax_t)nw, (uintmax_t)size); 1235 } else { 1236 errno = serrno; 1237 err(EX_OSERR, "%s", to_name); 1238 } 1239 } 1240 digest_update(&ctx, p, size); 1241 (void)munmap(p, size); 1242 done_copy = 1; 1243 } 1244 if (!done_copy) { 1245 while ((nr = read(from_fd, buf, sizeof(buf))) > 0) { 1246 if ((nw = write(to_fd, buf, nr)) != nr) { 1247 serrno = errno; 1248 (void)unlink(to_name); 1249 if (nw >= 0) { 1250 errx(EX_OSERR, 1251 "short write to %s: %jd bytes written, %jd bytes asked to write", 1252 to_name, (uintmax_t)nw, 1253 (uintmax_t)size); 1254 } else { 1255 errno = serrno; 1256 err(EX_OSERR, "%s", to_name); 1257 } 1258 } 1259 digest_update(&ctx, buf, nr); 1260 } 1261 if (nr != 0) { 1262 serrno = errno; 1263 (void)unlink(to_name); 1264 errno = serrno; 1265 err(EX_OSERR, "%s", from_name); 1266 } 1267 } 1268 return (digest_end(&ctx, NULL)); 1269 } 1270 1271 /* 1272 * strip -- 1273 * use strip(1) to strip the target file 1274 */ 1275 static void 1276 strip(const char *to_name) 1277 { 1278 const char *stripbin; 1279 const char *args[3]; 1280 pid_t pid; 1281 int error, status; 1282 1283 stripbin = getenv("STRIPBIN"); 1284 if (stripbin == NULL) 1285 stripbin = "strip"; 1286 args[0] = stripbin; 1287 args[1] = to_name; 1288 args[2] = NULL; 1289 error = posix_spawnp(&pid, stripbin, NULL, NULL, 1290 __DECONST(char **, args), environ); 1291 if (error != 0) { 1292 (void)unlink(to_name); 1293 errc(error == EAGAIN || error == EPROCLIM || error == ENOMEM ? 1294 EX_TEMPFAIL : EX_OSERR, error, "spawn %s", stripbin); 1295 } 1296 if (waitpid(pid, &status, 0) == -1) { 1297 error = errno; 1298 (void)unlink(to_name); 1299 errc(EX_SOFTWARE, error, "wait"); 1300 /* NOTREACHED */ 1301 } 1302 if (status != 0) { 1303 (void)unlink(to_name); 1304 errx(EX_SOFTWARE, "strip command %s failed on %s", 1305 stripbin, to_name); 1306 } 1307 } 1308 1309 /* 1310 * install_dir -- 1311 * build directory hierarchy 1312 */ 1313 static void 1314 install_dir(char *path) 1315 { 1316 char *p; 1317 struct stat sb; 1318 int ch, tried_mkdir; 1319 1320 for (p = path;; ++p) 1321 if (!*p || (p != path && *p == '/')) { 1322 tried_mkdir = 0; 1323 ch = *p; 1324 *p = '\0'; 1325 again: 1326 if (stat(path, &sb) < 0) { 1327 if (errno != ENOENT || tried_mkdir) 1328 err(EX_OSERR, "stat %s", path); 1329 if (mkdir(path, 0755) < 0) { 1330 tried_mkdir = 1; 1331 if (errno == EEXIST) 1332 goto again; 1333 err(EX_OSERR, "mkdir %s", path); 1334 } 1335 if (verbose) 1336 (void)printf("install: mkdir %s\n", 1337 path); 1338 } else if (!S_ISDIR(sb.st_mode)) 1339 errx(EX_OSERR, "%s exists but is not a directory", path); 1340 if (!(*p = ch)) 1341 break; 1342 } 1343 1344 if (!dounpriv) { 1345 if ((gid != (gid_t)-1 || uid != (uid_t)-1) && 1346 chown(path, uid, gid)) 1347 warn("chown %u:%u %s", uid, gid, path); 1348 /* XXXBED: should we do the chmod in the dounpriv case? */ 1349 if (chmod(path, mode)) 1350 warn("chmod %o %s", mode, path); 1351 } 1352 metadata_log(path, "dir", NULL, NULL, NULL, 0); 1353 } 1354 1355 /* 1356 * metadata_log -- 1357 * if metafp is not NULL, output mtree(8) full path name and settings to 1358 * metafp, to allow permissions to be set correctly by other tools, 1359 * or to allow integrity checks to be performed. 1360 */ 1361 static void 1362 metadata_log(const char *path, const char *type, struct timespec *ts, 1363 const char *slink, const char *digestresult, off_t size) 1364 { 1365 static const char extra[] = { ' ', '\t', '\n', '\\', '#', '\0' }; 1366 const char *p; 1367 char *buf; 1368 size_t destlen; 1369 struct flock metalog_lock; 1370 1371 if (!metafp) 1372 return; 1373 /* Buffer for strsvis(3). */ 1374 buf = (char *)malloc(4 * strlen(path) + 1); 1375 if (buf == NULL) { 1376 warnx("%s", strerror(ENOMEM)); 1377 return; 1378 } 1379 1380 /* Lock log file. */ 1381 metalog_lock.l_start = 0; 1382 metalog_lock.l_len = 0; 1383 metalog_lock.l_whence = SEEK_SET; 1384 metalog_lock.l_type = F_WRLCK; 1385 if (fcntl(fileno(metafp), F_SETLKW, &metalog_lock) == -1) { 1386 warn("can't lock %s", metafile); 1387 free(buf); 1388 return; 1389 } 1390 1391 /* Remove destdir. */ 1392 p = path; 1393 if (destdir) { 1394 destlen = strlen(destdir); 1395 if (strncmp(p, destdir, destlen) == 0 && 1396 (p[destlen] == '/' || p[destlen] == '\0')) 1397 p += destlen; 1398 } 1399 while (*p && *p == '/') 1400 p++; 1401 strsvis(buf, p, VIS_OCTAL, extra); 1402 p = buf; 1403 /* Print details. */ 1404 fprintf(metafp, ".%s%s type=%s", *p ? "/" : "", p, type); 1405 if (owner) 1406 fprintf(metafp, " uname=%s", owner); 1407 if (group) 1408 fprintf(metafp, " gname=%s", group); 1409 fprintf(metafp, " mode=%#o", mode); 1410 if (slink) { 1411 strsvis(buf, slink, VIS_CSTYLE, extra); /* encode link */ 1412 fprintf(metafp, " link=%s", buf); 1413 } 1414 if (*type == 'f') /* type=file */ 1415 fprintf(metafp, " size=%lld", (long long)size); 1416 if (ts != NULL && dopreserve) 1417 fprintf(metafp, " time=%lld.%09ld", 1418 (long long)ts[1].tv_sec, ts[1].tv_nsec); 1419 if (digestresult && digest) 1420 fprintf(metafp, " %s=%s", digest, digestresult); 1421 if (fflags) 1422 fprintf(metafp, " flags=%s", fflags); 1423 if (tags) 1424 fprintf(metafp, " tags=%s", tags); 1425 fputc('\n', metafp); 1426 /* Flush line. */ 1427 fflush(metafp); 1428 1429 /* Unlock log file. */ 1430 metalog_lock.l_type = F_UNLCK; 1431 if (fcntl(fileno(metafp), F_SETLKW, &metalog_lock) == -1) 1432 warn("can't unlock %s", metafile); 1433 free(buf); 1434 } 1435 1436 /* 1437 * usage -- 1438 * print a usage message and die 1439 */ 1440 static void 1441 usage(void) 1442 { 1443 (void)fprintf(stderr, 1444 "usage: install [-bCcpSsUv] [-f flags] [-g group] [-m mode] [-o owner]\n" 1445 " [-M log] [-D dest] [-h hash] [-T tags]\n" 1446 " [-B suffix] [-l linkflags] [-N dbdir]\n" 1447 " file1 file2\n" 1448 " install [-bCcpSsUv] [-f flags] [-g group] [-m mode] [-o owner]\n" 1449 " [-M log] [-D dest] [-h hash] [-T tags]\n" 1450 " [-B suffix] [-l linkflags] [-N dbdir]\n" 1451 " file1 ... fileN directory\n" 1452 " install -dU [-vU] [-g group] [-m mode] [-N dbdir] [-o owner]\n" 1453 " [-M log] [-D dest] [-h hash] [-T tags]\n" 1454 " directory ...\n"); 1455 exit(EX_USAGE); 1456 /* NOTREACHED */ 1457 } 1458 1459 /* 1460 * trymmap -- 1461 * return true (1) if mmap should be tried, false (0) if not. 1462 */ 1463 static int 1464 trymmap(int fd) 1465 { 1466 /* 1467 * The ifdef is for bootstrapping - f_fstypename doesn't exist in 1468 * pre-Lite2-merge systems. 1469 */ 1470 #ifdef MFSNAMELEN 1471 struct statfs stfs; 1472 1473 if (fstatfs(fd, &stfs) != 0) 1474 return (0); 1475 if (strcmp(stfs.f_fstypename, "ufs") == 0 || 1476 strcmp(stfs.f_fstypename, "cd9660") == 0) 1477 return (1); 1478 #endif 1479 return (0); 1480 } 1481