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 34static 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 41static 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 91typedef 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 99static 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 108extern char **environ; 109 110static gid_t gid; 111static uid_t uid; 112static int dobackup, docompare, dodir, dolink, dopreserve, dostrip, dounpriv, 113 safecopy, verbose; 114static int haveopt_f, haveopt_g, haveopt_m, haveopt_o; 115static mode_t mode = S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH; 116static FILE *metafp; 117static const char *group, *owner; 118static const char *suffix = BACKUP_SUFFIX; 119static char *destdir, *digest, *fflags, *metafile, *tags; 120 121static int compare(int, const char *, size_t, int, const char *, size_t, 122 char **); 123static char *copy(int, const char *, int, const char *, off_t); 124static int create_newfile(const char *, int, struct stat *); 125static int create_tempfile(const char *, char *, size_t); 126static char *quiet_mktemp(char *template); 127static char *digest_file(const char *); 128static void digest_init(DIGEST_CTX *); 129static void digest_update(DIGEST_CTX *, const char *, size_t); 130static char *digest_end(DIGEST_CTX *, char *); 131static int do_link(const char *, const char *, const struct stat *); 132static void do_symlink(const char *, const char *, const struct stat *); 133static void makelink(const char *, const char *, const struct stat *); 134static void install(const char *, const char *, u_long, u_int); 135static void install_dir(char *); 136static void metadata_log(const char *, const char *, struct timespec *, 137 const char *, const char *, off_t); 138static int parseid(const char *, id_t *); 139static int strip(const char *, int, const char *, char **); 140static int trymmap(int); 141static void usage(void); 142 143int 144main(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 389static char * 390digest_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 409static void 410digest_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 434static void 435digest_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 459static char * 460digest_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 */ 483static int 484parseid(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 */ 499static char * 500quiet_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 */ 517static int 518do_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 */ 565static void 566do_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 */ 610static void 611makelink(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, *ld, *ls, *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 ls = ld = NULL; 713 for (s = src, d = dst; *s == *d; ls = s, ld = d, s++, d++) 714 continue; 715 /* 716 * If we didn't end after a directory separator, then we've 717 * falsely matched the last component. For example, if one 718 * invoked install -lrs /lib/foo.so /libexec/ then the source 719 * would terminate just after the separator while the 720 * destination would terminate in the middle of 'libexec', 721 * leading to a full directory getting falsely eaten. 722 */ 723 if ((ls != NULL && *ls != '/') || (ld != NULL && *ld != '/')) 724 s--, d--; 725 while (*s != '/') 726 s--, d--; 727 728 /* Count the number of directories we need to backtrack. */ 729 for (++d, lnk[0] = '\0'; *d; d++) 730 if (*d == '/') 731 (void)strlcat(lnk, "../", sizeof(lnk)); 732 733 (void)strlcat(lnk, ++s, sizeof(lnk)); 734 735 do_symlink(lnk, to_name, target_sb); 736 /* XXX: Link may point outside of destdir. */ 737 metadata_log(to_name, "link", NULL, lnk, NULL, 0); 738 return; 739 } 740 741 /* 742 * If absolute or relative was not specified, try the names the 743 * user provided. 744 */ 745 do_symlink(from_name, to_name, target_sb); 746 /* XXX: from_name may point outside of destdir. */ 747 metadata_log(to_name, "link", NULL, from_name, NULL, 0); 748} 749 750/* 751 * install -- 752 * build a path name and install the file 753 */ 754static void 755install(const char *from_name, const char *to_name, u_long fset, u_int flags) 756{ 757 struct stat from_sb, temp_sb, to_sb; 758 struct timespec tsb[2]; 759 int devnull, files_match, from_fd, serrno, stripped, target; 760 int tempcopy, temp_fd, to_fd; 761 char backup[MAXPATHLEN], *p, pathbuf[MAXPATHLEN], tempfile[MAXPATHLEN]; 762 char *digestresult; 763 764 digestresult = NULL; 765 files_match = stripped = 0; 766 from_fd = -1; 767 to_fd = -1; 768 769 /* If try to install NULL file to a directory, fails. */ 770 if (flags & DIRECTORY || strcmp(from_name, _PATH_DEVNULL)) { 771 if (!dolink) { 772 if (stat(from_name, &from_sb)) 773 err(EX_OSERR, "%s", from_name); 774 if (!S_ISREG(from_sb.st_mode)) { 775 errno = EFTYPE; 776 err(EX_OSERR, "%s", from_name); 777 } 778 } 779 /* Build the target path. */ 780 if (flags & DIRECTORY) { 781 (void)snprintf(pathbuf, sizeof(pathbuf), "%s%s%s", 782 to_name, 783 to_name[strlen(to_name) - 1] == '/' ? "" : "/", 784 (p = strrchr(from_name, '/')) ? ++p : from_name); 785 to_name = pathbuf; 786 } 787 devnull = 0; 788 } else { 789 devnull = 1; 790 } 791 792 target = (lstat(to_name, &to_sb) == 0); 793 794 if (dolink) { 795 if (target && !safecopy) { 796 if (to_sb.st_mode & S_IFDIR && rmdir(to_name) == -1) 797 err(EX_OSERR, "%s", to_name); 798#if HAVE_STRUCT_STAT_ST_FLAGS 799 if (to_sb.st_flags & NOCHANGEBITS) 800 (void)chflags(to_name, 801 to_sb.st_flags & ~NOCHANGEBITS); 802#endif 803 unlink(to_name); 804 } 805 makelink(from_name, to_name, target ? &to_sb : NULL); 806 return; 807 } 808 809 if (target && !S_ISREG(to_sb.st_mode) && !S_ISLNK(to_sb.st_mode)) { 810 errno = EFTYPE; 811 warn("%s", to_name); 812 return; 813 } 814 815 /* Only copy safe if the target exists. */ 816 tempcopy = safecopy && target; 817 818 if (!devnull && (from_fd = open(from_name, O_RDONLY, 0)) < 0) 819 err(EX_OSERR, "%s", from_name); 820 821 /* If we don't strip, we can compare first. */ 822 if (docompare && !dostrip && target && S_ISREG(to_sb.st_mode)) { 823 if ((to_fd = open(to_name, O_RDONLY, 0)) < 0) 824 err(EX_OSERR, "%s", to_name); 825 if (devnull) 826 files_match = to_sb.st_size == 0; 827 else 828 files_match = !(compare(from_fd, from_name, 829 (size_t)from_sb.st_size, to_fd, 830 to_name, (size_t)to_sb.st_size, &digestresult)); 831 832 /* Close "to" file unless we match. */ 833 if (!files_match) 834 (void)close(to_fd); 835 } 836 837 if (!files_match) { 838 if (tempcopy) { 839 to_fd = create_tempfile(to_name, tempfile, 840 sizeof(tempfile)); 841 if (to_fd < 0) 842 err(EX_OSERR, "%s", tempfile); 843 } else { 844 if ((to_fd = create_newfile(to_name, target, 845 &to_sb)) < 0) 846 err(EX_OSERR, "%s", to_name); 847 if (verbose) 848 (void)printf("install: %s -> %s\n", 849 from_name, to_name); 850 } 851 if (!devnull) { 852 if (dostrip) 853 stripped = strip(tempcopy ? tempfile : to_name, 854 to_fd, from_name, &digestresult); 855 if (!stripped) 856 digestresult = copy(from_fd, from_name, to_fd, 857 tempcopy ? tempfile : to_name, from_sb.st_size); 858 } 859 } 860 861 if (dostrip) { 862 if (!stripped) 863 (void)strip(tempcopy ? tempfile : to_name, to_fd, 864 NULL, &digestresult); 865 866 /* 867 * Re-open our fd on the target, in case 868 * we did not strip in-place. 869 */ 870 close(to_fd); 871 to_fd = open(tempcopy ? tempfile : to_name, O_RDONLY, 0); 872 if (to_fd < 0) 873 err(EX_OSERR, "stripping %s", to_name); 874 } 875 876 /* 877 * Compare the stripped temp file with the target. 878 */ 879 if (docompare && dostrip && target && S_ISREG(to_sb.st_mode)) { 880 temp_fd = to_fd; 881 882 /* Re-open to_fd using the real target name. */ 883 if ((to_fd = open(to_name, O_RDONLY, 0)) < 0) 884 err(EX_OSERR, "%s", to_name); 885 886 if (fstat(temp_fd, &temp_sb)) { 887 serrno = errno; 888 (void)unlink(tempfile); 889 errno = serrno; 890 err(EX_OSERR, "%s", tempfile); 891 } 892 893 if (compare(temp_fd, tempfile, (size_t)temp_sb.st_size, to_fd, 894 to_name, (size_t)to_sb.st_size, &digestresult) 895 == 0) { 896 /* 897 * If target has more than one link we need to 898 * replace it in order to snap the extra links. 899 * Need to preserve target file times, though. 900 */ 901 if (to_sb.st_nlink != 1) { 902 tsb[0] = to_sb.st_atim; 903 tsb[1] = to_sb.st_mtim; 904 (void)utimensat(AT_FDCWD, tempfile, tsb, 0); 905 } else { 906 files_match = 1; 907 (void)unlink(tempfile); 908 } 909 (void) close(temp_fd); 910 } 911 } else if (dostrip) 912 digestresult = digest_file(tempfile); 913 914 /* 915 * Move the new file into place if doing a safe copy 916 * and the files are different (or just not compared). 917 */ 918 if (tempcopy && !files_match) { 919#if HAVE_STRUCT_STAT_ST_FLAGS 920 /* Try to turn off the immutable bits. */ 921 if (to_sb.st_flags & NOCHANGEBITS) 922 (void)chflags(to_name, to_sb.st_flags & ~NOCHANGEBITS); 923#endif 924 if (dobackup) { 925 if ((size_t)snprintf(backup, MAXPATHLEN, "%s%s", to_name, 926 suffix) != strlen(to_name) + strlen(suffix)) { 927 unlink(tempfile); 928 errx(EX_OSERR, "%s: backup filename too long", 929 to_name); 930 } 931 if (verbose) 932 (void)printf("install: %s -> %s\n", to_name, backup); 933 if (unlink(backup) < 0 && errno != ENOENT) { 934 serrno = errno; 935#if HAVE_STRUCT_STAT_ST_FLAGS 936 if (to_sb.st_flags & NOCHANGEBITS) 937 (void)chflags(to_name, to_sb.st_flags); 938#endif 939 unlink(tempfile); 940 errno = serrno; 941 err(EX_OSERR, "unlink: %s", backup); 942 } 943 if (link(to_name, backup) < 0) { 944 serrno = errno; 945 unlink(tempfile); 946#if HAVE_STRUCT_STAT_ST_FLAGS 947 if (to_sb.st_flags & NOCHANGEBITS) 948 (void)chflags(to_name, to_sb.st_flags); 949#endif 950 errno = serrno; 951 err(EX_OSERR, "link: %s to %s", to_name, 952 backup); 953 } 954 } 955 if (verbose) 956 (void)printf("install: %s -> %s\n", from_name, to_name); 957 if (rename(tempfile, to_name) < 0) { 958 serrno = errno; 959 unlink(tempfile); 960 errno = serrno; 961 err(EX_OSERR, "rename: %s to %s", 962 tempfile, to_name); 963 } 964 965 /* Re-open to_fd so we aren't hosed by the rename(2). */ 966 (void) close(to_fd); 967 if ((to_fd = open(to_name, O_RDONLY, 0)) < 0) 968 err(EX_OSERR, "%s", to_name); 969 } 970 971 /* 972 * Preserve the timestamp of the source file if necessary. 973 */ 974 if (dopreserve && !files_match && !devnull) { 975 tsb[0] = from_sb.st_atim; 976 tsb[1] = from_sb.st_mtim; 977 (void)utimensat(AT_FDCWD, to_name, tsb, 0); 978 } 979 980 if (fstat(to_fd, &to_sb) == -1) { 981 serrno = errno; 982 (void)unlink(to_name); 983 errno = serrno; 984 err(EX_OSERR, "%s", to_name); 985 } 986 987 /* 988 * Set owner, group, mode for target; do the chown first, 989 * chown may lose the setuid bits. 990 */ 991 if (!dounpriv && ((gid != (gid_t)-1 && gid != to_sb.st_gid) || 992 (uid != (uid_t)-1 && uid != to_sb.st_uid) || 993 (mode != (to_sb.st_mode & ALLPERMS)))) { 994#if HAVE_STRUCT_STAT_ST_FLAGS 995 /* Try to turn off the immutable bits. */ 996 if (to_sb.st_flags & NOCHANGEBITS) 997 (void)fchflags(to_fd, to_sb.st_flags & ~NOCHANGEBITS); 998#endif 999 } 1000 1001 if (!dounpriv & 1002 (gid != (gid_t)-1 && gid != to_sb.st_gid) || 1003 (uid != (uid_t)-1 && uid != to_sb.st_uid)) 1004 if (fchown(to_fd, uid, gid) == -1) { 1005 serrno = errno; 1006 (void)unlink(to_name); 1007 errno = serrno; 1008 err(EX_OSERR,"%s: chown/chgrp", to_name); 1009 } 1010 1011 if (mode != (to_sb.st_mode & ALLPERMS)) { 1012 if (fchmod(to_fd, 1013 dounpriv ? mode & (S_IRWXU|S_IRWXG|S_IRWXO) : mode)) { 1014 serrno = errno; 1015 (void)unlink(to_name); 1016 errno = serrno; 1017 err(EX_OSERR, "%s: chmod", to_name); 1018 } 1019 } 1020#if HAVE_STRUCT_STAT_ST_FLAGS 1021 /* 1022 * If provided a set of flags, set them, otherwise, preserve the 1023 * flags, except for the dump flag. 1024 * NFS does not support flags. Ignore EOPNOTSUPP flags if we're just 1025 * trying to turn off UF_NODUMP. If we're trying to set real flags, 1026 * then warn if the fs doesn't support it, otherwise fail. 1027 */ 1028 if (!dounpriv & !devnull && (flags & SETFLAGS || 1029 (from_sb.st_flags & ~UF_NODUMP) != to_sb.st_flags) && 1030 fchflags(to_fd, 1031 flags & SETFLAGS ? fset : from_sb.st_flags & ~UF_NODUMP)) { 1032 if (flags & SETFLAGS) { 1033 if (errno == EOPNOTSUPP) 1034 warn("%s: chflags", to_name); 1035 else { 1036 serrno = errno; 1037 (void)unlink(to_name); 1038 errno = serrno; 1039 err(EX_OSERR, "%s: chflags", to_name); 1040 } 1041 } 1042 } 1043#endif 1044 1045 (void)close(to_fd); 1046 if (!devnull) 1047 (void)close(from_fd); 1048 1049 metadata_log(to_name, "file", tsb, NULL, digestresult, to_sb.st_size); 1050 free(digestresult); 1051} 1052 1053/* 1054 * compare -- 1055 * Compare two files; non-zero means files differ. 1056 * Compute digest and return its address in *dresp 1057 * unless it points to pre-computed digest. 1058 */ 1059static int 1060compare(int from_fd, const char *from_name __unused, size_t from_len, 1061 int to_fd, const char *to_name __unused, size_t to_len, 1062 char **dresp) 1063{ 1064 char *p, *q; 1065 int rv; 1066 int do_digest, done_compare; 1067 DIGEST_CTX ctx; 1068 1069 rv = 0; 1070 if (from_len != to_len) 1071 return 1; 1072 1073 do_digest = (digesttype != DIGEST_NONE && dresp != NULL && 1074 *dresp == NULL); 1075 if (from_len <= MAX_CMP_SIZE) { 1076 if (do_digest) 1077 digest_init(&ctx); 1078 done_compare = 0; 1079 if (trymmap(from_fd) && trymmap(to_fd)) { 1080 p = mmap(NULL, from_len, PROT_READ, MAP_SHARED, 1081 from_fd, (off_t)0); 1082 if (p == MAP_FAILED) 1083 goto out; 1084 q = mmap(NULL, from_len, PROT_READ, MAP_SHARED, 1085 to_fd, (off_t)0); 1086 if (q == MAP_FAILED) { 1087 munmap(p, from_len); 1088 goto out; 1089 } 1090 1091 rv = memcmp(p, q, from_len); 1092 if (do_digest) 1093 digest_update(&ctx, p, from_len); 1094 munmap(p, from_len); 1095 munmap(q, from_len); 1096 done_compare = 1; 1097 } 1098 out: 1099 if (!done_compare) { 1100 char buf1[MAXBSIZE]; 1101 char buf2[MAXBSIZE]; 1102 int n1, n2; 1103 1104 rv = 0; 1105 lseek(from_fd, 0, SEEK_SET); 1106 lseek(to_fd, 0, SEEK_SET); 1107 while (rv == 0) { 1108 n1 = read(from_fd, buf1, sizeof(buf1)); 1109 if (n1 == 0) 1110 break; /* EOF */ 1111 else if (n1 > 0) { 1112 n2 = read(to_fd, buf2, n1); 1113 if (n2 == n1) 1114 rv = memcmp(buf1, buf2, n1); 1115 else 1116 rv = 1; /* out of sync */ 1117 } else 1118 rv = 1; /* read failure */ 1119 if (do_digest) 1120 digest_update(&ctx, buf1, n1); 1121 } 1122 lseek(from_fd, 0, SEEK_SET); 1123 lseek(to_fd, 0, SEEK_SET); 1124 } 1125 } else 1126 rv = 1; /* don't bother in this case */ 1127 1128 if (do_digest) { 1129 if (rv == 0) 1130 *dresp = digest_end(&ctx, NULL); 1131 else 1132 (void)digest_end(&ctx, NULL); 1133 } 1134 1135 return rv; 1136} 1137 1138/* 1139 * create_tempfile -- 1140 * create a temporary file based on path and open it 1141 */ 1142static int 1143create_tempfile(const char *path, char *temp, size_t tsize) 1144{ 1145 char *p; 1146 1147 (void)strncpy(temp, path, tsize); 1148 temp[tsize - 1] = '\0'; 1149 if ((p = strrchr(temp, '/')) != NULL) 1150 p++; 1151 else 1152 p = temp; 1153 (void)strncpy(p, "INS@XXXX", &temp[tsize - 1] - p); 1154 temp[tsize - 1] = '\0'; 1155 return (mkstemp(temp)); 1156} 1157 1158/* 1159 * create_newfile -- 1160 * create a new file, overwriting an existing one if necessary 1161 */ 1162static int 1163create_newfile(const char *path, int target, struct stat *sbp) 1164{ 1165 char backup[MAXPATHLEN]; 1166 int saved_errno = 0; 1167 int newfd; 1168 1169 if (target) { 1170 /* 1171 * Unlink now... avoid ETXTBSY errors later. Try to turn 1172 * off the append/immutable bits -- if we fail, go ahead, 1173 * it might work. 1174 */ 1175#if HAVE_STRUCT_STAT_ST_FLAGS 1176 if (sbp->st_flags & NOCHANGEBITS) 1177 (void)chflags(path, sbp->st_flags & ~NOCHANGEBITS); 1178#endif 1179 1180 if (dobackup) { 1181 if ((size_t)snprintf(backup, MAXPATHLEN, "%s%s", 1182 path, suffix) != strlen(path) + strlen(suffix)) { 1183 saved_errno = errno; 1184#if HAVE_STRUCT_STAT_ST_FLAGS 1185 if (sbp->st_flags & NOCHANGEBITS) 1186 (void)chflags(path, sbp->st_flags); 1187#endif 1188 errno = saved_errno; 1189 errx(EX_OSERR, "%s: backup filename too long", 1190 path); 1191 } 1192 (void)snprintf(backup, MAXPATHLEN, "%s%s", 1193 path, suffix); 1194 if (verbose) 1195 (void)printf("install: %s -> %s\n", 1196 path, backup); 1197 if (rename(path, backup) < 0) { 1198 saved_errno = errno; 1199#if HAVE_STRUCT_STAT_ST_FLAGS 1200 if (sbp->st_flags & NOCHANGEBITS) 1201 (void)chflags(path, sbp->st_flags); 1202#endif 1203 errno = saved_errno; 1204 err(EX_OSERR, "rename: %s to %s", path, backup); 1205 } 1206 } else 1207 if (unlink(path) < 0) 1208 saved_errno = errno; 1209 } 1210 1211 newfd = open(path, O_CREAT | O_RDWR | O_TRUNC, S_IRUSR | S_IWUSR); 1212 if (newfd < 0 && saved_errno != 0) 1213 errno = saved_errno; 1214 return newfd; 1215} 1216 1217/* 1218 * copy -- 1219 * copy from one file to another 1220 */ 1221static char * 1222copy(int from_fd, const char *from_name, int to_fd, const char *to_name, 1223 off_t size) 1224{ 1225 int nr, nw; 1226 int serrno; 1227 char *p; 1228 char buf[MAXBSIZE]; 1229 int done_copy; 1230 DIGEST_CTX ctx; 1231 1232 /* Rewind file descriptors. */ 1233 if (lseek(from_fd, (off_t)0, SEEK_SET) == (off_t)-1) 1234 err(EX_OSERR, "lseek: %s", from_name); 1235 if (lseek(to_fd, (off_t)0, SEEK_SET) == (off_t)-1) 1236 err(EX_OSERR, "lseek: %s", to_name); 1237 1238 digest_init(&ctx); 1239 1240 /* 1241 * Mmap and write if less than 8M (the limit is so we don't totally 1242 * trash memory on big files. This is really a minor hack, but it 1243 * wins some CPU back. 1244 */ 1245 done_copy = 0; 1246 if (size <= 8 * 1048576 && trymmap(from_fd) && 1247 (p = mmap(NULL, (size_t)size, PROT_READ, MAP_SHARED, 1248 from_fd, (off_t)0)) != MAP_FAILED) { 1249 nw = write(to_fd, p, size); 1250 if (nw != size) { 1251 serrno = errno; 1252 (void)unlink(to_name); 1253 if (nw >= 0) { 1254 errx(EX_OSERR, 1255 "short write to %s: %jd bytes written, %jd bytes asked to write", 1256 to_name, (uintmax_t)nw, (uintmax_t)size); 1257 } else { 1258 errno = serrno; 1259 err(EX_OSERR, "%s", to_name); 1260 } 1261 } 1262 digest_update(&ctx, p, size); 1263 (void)munmap(p, size); 1264 done_copy = 1; 1265 } 1266 if (!done_copy) { 1267 while ((nr = read(from_fd, buf, sizeof(buf))) > 0) { 1268 if ((nw = write(to_fd, buf, nr)) != nr) { 1269 serrno = errno; 1270 (void)unlink(to_name); 1271 if (nw >= 0) { 1272 errx(EX_OSERR, 1273 "short write to %s: %jd bytes written, %jd bytes asked to write", 1274 to_name, (uintmax_t)nw, 1275 (uintmax_t)size); 1276 } else { 1277 errno = serrno; 1278 err(EX_OSERR, "%s", to_name); 1279 } 1280 } 1281 digest_update(&ctx, buf, nr); 1282 } 1283 if (nr != 0) { 1284 serrno = errno; 1285 (void)unlink(to_name); 1286 errno = serrno; 1287 err(EX_OSERR, "%s", from_name); 1288 } 1289 } 1290 if (safecopy && fsync(to_fd) == -1) { 1291 serrno = errno; 1292 (void)unlink(to_name); 1293 errno = serrno; 1294 err(EX_OSERR, "fsync failed for %s", to_name); 1295 } 1296 return (digest_end(&ctx, NULL)); 1297} 1298 1299/* 1300 * strip -- 1301 * Use strip(1) to strip the target file. 1302 * Just invoke strip(1) on to_name if from_name is NULL, else try 1303 * to run "strip -o to_name -- from_name" and return 0 on failure. 1304 * Return 1 on success and assign result of digest_file(to_name) 1305 * to *dresp. 1306 */ 1307static int 1308strip(const char *to_name, int to_fd, const char *from_name, char **dresp) 1309{ 1310 const char *stripbin; 1311 const char *args[6]; 1312 pid_t pid; 1313 int error, serrno, status; 1314 1315 stripbin = getenv("STRIPBIN"); 1316 if (stripbin == NULL) 1317 stripbin = "strip"; 1318 args[0] = stripbin; 1319 if (from_name == NULL) { 1320 args[1] = to_name; 1321 args[2] = NULL; 1322 } else { 1323 args[1] = "-o"; 1324 args[2] = to_name; 1325 args[3] = "--"; 1326 args[4] = from_name; 1327 args[5] = NULL; 1328 } 1329 error = posix_spawnp(&pid, stripbin, NULL, NULL, 1330 __DECONST(char **, args), environ); 1331 if (error != 0) { 1332 (void)unlink(to_name); 1333 errc(error == EAGAIN || error == EPROCLIM || error == ENOMEM ? 1334 EX_TEMPFAIL : EX_OSERR, error, "spawn %s", stripbin); 1335 } 1336 if (waitpid(pid, &status, 0) == -1) { 1337 error = errno; 1338 (void)unlink(to_name); 1339 errc(EX_SOFTWARE, error, "wait"); 1340 /* NOTREACHED */ 1341 } 1342 if (status != 0) { 1343 if (from_name != NULL) 1344 return (0); 1345 (void)unlink(to_name); 1346 errx(EX_SOFTWARE, "strip command %s failed on %s", 1347 stripbin, to_name); 1348 } 1349 if (from_name != NULL && safecopy && fsync(to_fd) == -1) { 1350 serrno = errno; 1351 (void)unlink(to_name); 1352 errno = serrno; 1353 err(EX_OSERR, "fsync failed for %s", to_name); 1354 } 1355 if (dresp != NULL) 1356 *dresp = digest_file(to_name); 1357 return (1); 1358} 1359 1360/* 1361 * install_dir -- 1362 * build directory hierarchy 1363 */ 1364static void 1365install_dir(char *path) 1366{ 1367 char *p; 1368 struct stat sb; 1369 int ch, tried_mkdir; 1370 1371 for (p = path;; ++p) 1372 if (!*p || (p != path && *p == '/')) { 1373 tried_mkdir = 0; 1374 ch = *p; 1375 *p = '\0'; 1376again: 1377 if (stat(path, &sb) < 0) { 1378 if (errno != ENOENT || tried_mkdir) 1379 err(EX_OSERR, "stat %s", path); 1380 if (mkdir(path, 0755) < 0) { 1381 tried_mkdir = 1; 1382 if (errno == EEXIST) 1383 goto again; 1384 err(EX_OSERR, "mkdir %s", path); 1385 } 1386 if (verbose) 1387 (void)printf("install: mkdir %s\n", 1388 path); 1389 } else if (!S_ISDIR(sb.st_mode)) 1390 errx(EX_OSERR, "%s exists but is not a directory", path); 1391 if (!(*p = ch)) 1392 break; 1393 } 1394 1395 if (!dounpriv) { 1396 if ((gid != (gid_t)-1 || uid != (uid_t)-1) && 1397 chown(path, uid, gid)) 1398 warn("chown %u:%u %s", uid, gid, path); 1399 /* XXXBED: should we do the chmod in the dounpriv case? */ 1400 if (chmod(path, mode)) 1401 warn("chmod %o %s", mode, path); 1402 } 1403 metadata_log(path, "dir", NULL, NULL, NULL, 0); 1404} 1405 1406/* 1407 * metadata_log -- 1408 * if metafp is not NULL, output mtree(8) full path name and settings to 1409 * metafp, to allow permissions to be set correctly by other tools, 1410 * or to allow integrity checks to be performed. 1411 */ 1412static void 1413metadata_log(const char *path, const char *type, struct timespec *ts, 1414 const char *slink, const char *digestresult, off_t size) 1415{ 1416 static const char extra[] = { ' ', '\t', '\n', '\\', '#', '\0' }; 1417 const char *p; 1418 char *buf; 1419 size_t destlen; 1420 struct flock metalog_lock; 1421 1422 if (!metafp) 1423 return; 1424 /* Buffer for strsvis(3). */ 1425 buf = (char *)malloc(4 * strlen(path) + 1); 1426 if (buf == NULL) { 1427 warnx("%s", strerror(ENOMEM)); 1428 return; 1429 } 1430 1431 /* Lock log file. */ 1432 metalog_lock.l_start = 0; 1433 metalog_lock.l_len = 0; 1434 metalog_lock.l_whence = SEEK_SET; 1435 metalog_lock.l_type = F_WRLCK; 1436 if (fcntl(fileno(metafp), F_SETLKW, &metalog_lock) == -1) { 1437 warn("can't lock %s", metafile); 1438 free(buf); 1439 return; 1440 } 1441 1442 /* Remove destdir. */ 1443 p = path; 1444 if (destdir) { 1445 destlen = strlen(destdir); 1446 if (strncmp(p, destdir, destlen) == 0 && 1447 (p[destlen] == '/' || p[destlen] == '\0')) 1448 p += destlen; 1449 } 1450 while (*p && *p == '/') 1451 p++; 1452 strsvis(buf, p, VIS_OCTAL, extra); 1453 p = buf; 1454 /* Print details. */ 1455 fprintf(metafp, ".%s%s type=%s", *p ? "/" : "", p, type); 1456 if (owner) 1457 fprintf(metafp, " uname=%s", owner); 1458 if (group) 1459 fprintf(metafp, " gname=%s", group); 1460 fprintf(metafp, " mode=%#o", mode); 1461 if (slink) { 1462 strsvis(buf, slink, VIS_CSTYLE, extra); /* encode link */ 1463 fprintf(metafp, " link=%s", buf); 1464 } 1465 if (*type == 'f') /* type=file */ 1466 fprintf(metafp, " size=%lld", (long long)size); 1467 if (ts != NULL && dopreserve) 1468 fprintf(metafp, " time=%lld.%09ld", 1469 (long long)ts[1].tv_sec, ts[1].tv_nsec); 1470 if (digestresult && digest) 1471 fprintf(metafp, " %s=%s", digest, digestresult); 1472 if (fflags) 1473 fprintf(metafp, " flags=%s", fflags); 1474 if (tags) 1475 fprintf(metafp, " tags=%s", tags); 1476 fputc('\n', metafp); 1477 /* Flush line. */ 1478 fflush(metafp); 1479 1480 /* Unlock log file. */ 1481 metalog_lock.l_type = F_UNLCK; 1482 if (fcntl(fileno(metafp), F_SETLKW, &metalog_lock) == -1) 1483 warn("can't unlock %s", metafile); 1484 free(buf); 1485} 1486 1487/* 1488 * usage -- 1489 * print a usage message and die 1490 */ 1491static void 1492usage(void) 1493{ 1494 (void)fprintf(stderr, 1495"usage: install [-bCcpSsUv] [-f flags] [-g group] [-m mode] [-o owner]\n" 1496" [-M log] [-D dest] [-h hash] [-T tags]\n" 1497" [-B suffix] [-l linkflags] [-N dbdir]\n" 1498" file1 file2\n" 1499" install [-bCcpSsUv] [-f flags] [-g group] [-m mode] [-o owner]\n" 1500" [-M log] [-D dest] [-h hash] [-T tags]\n" 1501" [-B suffix] [-l linkflags] [-N dbdir]\n" 1502" file1 ... fileN directory\n" 1503" install -dU [-vU] [-g group] [-m mode] [-N dbdir] [-o owner]\n" 1504" [-M log] [-D dest] [-h hash] [-T tags]\n" 1505" directory ...\n"); 1506 exit(EX_USAGE); 1507 /* NOTREACHED */ 1508} 1509 1510/* 1511 * trymmap -- 1512 * return true (1) if mmap should be tried, false (0) if not. 1513 */ 1514static int 1515trymmap(int fd) 1516{ 1517/* 1518 * The ifdef is for bootstrapping - f_fstypename doesn't exist in 1519 * pre-Lite2-merge systems. 1520 */ 1521#ifdef MFSNAMELEN 1522 struct statfs stfs; 1523 1524 if (fstatfs(fd, &stfs) != 0) 1525 return (0); 1526 if (strcmp(stfs.f_fstypename, "ufs") == 0 || 1527 strcmp(stfs.f_fstypename, "cd9660") == 0) 1528 return (1); 1529#endif 1530 return (0); 1531} 1532