2 * Copyright (c) 2012, 2013 SRI International
3 * Copyright (c) 1987, 1993
4 * The Regents of the University of California. All rights reserved.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 4. Neither the name of the University nor the names of its contributors
15 * may be used to endorse or promote products derived from this software
16 * without specific prior written permission.
18 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 static const char copyright[] =
33 "@(#) Copyright (c) 1987, 1993\n\
34 The Regents of the University of California. All rights reserved.\n";
39 static char sccsid[] = "@(#)xinstall.c 8.1 (Berkeley) 7/21/93";
43 #include <sys/cdefs.h>
44 __FBSDID("$FreeBSD$");
46 #include <sys/param.h>
48 #include <sys/mount.h>
75 /* Bootstrap aid - this doesn't exist in most older releases */
77 #define MAP_FAILED ((void *)-1) /* from <sys/mman.h> */
80 #define MAX_CMP_SIZE (16 * 1024 * 1024)
82 #define LN_ABSOLUTE 0x01
83 #define LN_RELATIVE 0x02
85 #define LN_SYMBOLIC 0x08
88 #define DIRECTORY 0x01 /* Tell install it's a directory. */
89 #define SETFLAGS 0x02 /* Tell install to set flags. */
90 #define NOCHANGEBITS (UF_IMMUTABLE | UF_APPEND | SF_IMMUTABLE | SF_APPEND)
91 #define BACKUP_SUFFIX ".old"
95 RIPEMD160_CTX RIPEMD160;
108 } digesttype = DIGEST_NONE;
112 static int dobackup, docompare, dodir, dolink, dopreserve, dostrip, dounpriv,
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;
117 static const char *group, *owner;
118 static const char *suffix = BACKUP_SUFFIX;
119 static char *destdir, *digest, *fflags, *metafile, *tags;
121 static int compare(int, const char *, size_t, int, const char *, size_t,
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 unsigned 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 timeval *,
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);
144 main(int argc, char *argv[])
146 struct stat from_sb, to_sb;
156 group = owner = NULL;
157 while ((ch = getopt(argc, argv, "B:bCcD:df:g:h:l:M:m:N:o:pSsT:Uv")) !=
170 /* For backwards compatibility. */
190 for (p = optarg; *p != '\0'; p++)
193 dolink &= ~(LN_HARD|LN_MIXED);
194 dolink |= LN_SYMBOLIC;
197 dolink &= ~(LN_SYMBOLIC|LN_MIXED);
201 dolink &= ~(LN_SYMBOLIC|LN_HARD);
205 dolink &= ~LN_RELATIVE;
206 dolink |= LN_ABSOLUTE;
209 dolink &= ~LN_ABSOLUTE;
210 dolink |= LN_RELATIVE;
213 errx(1, "%c: invalid link type", *p);
222 if (!(set = setmode(optarg)))
223 errx(EX_USAGE, "invalid file mode: %s",
225 mode = getmode(set, 0);
229 if (!setup_getid(optarg))
230 err(EX_OSERR, "Unable to use user and group "
231 "databases in `%s'", optarg);
238 docompare = dopreserve = 1;
262 /* some options make no sense when creating directories */
263 if (dostrip && dodir) {
264 warnx("-d and -s may not be specified together");
268 if (getenv("DONTSTRIP") != NULL) {
269 warnx("DONTSTRIP set - will not strip installed binaries");
273 /* must have at least two arguments, except when creating directories */
274 if (argc == 0 || (argc == 1 && !dodir))
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;
291 warnx("unknown digest `%s'", digest);
296 /* need to make a temp copy so we can compare stripped version */
297 if (docompare && dostrip)
300 /* get group and owner id's */
301 if (group != NULL && !dounpriv) {
302 if (gid_from_group(group, &gid) == -1) {
304 if (!parseid(group, &id))
305 errx(1, "unknown group %s", group);
311 if (owner != NULL && !dounpriv) {
312 if (uid_from_user(owner, &uid) == -1) {
314 if (!parseid(owner, &id))
315 errx(1, "unknown user %s", owner);
321 if (fflags != NULL && !dounpriv) {
322 if (strtofflags(&fflags, &fset, NULL))
323 errx(EX_USAGE, "%s: invalid flag", fflags);
327 if (metafile != NULL) {
328 if ((metafp = fopen(metafile, "a")) == NULL)
329 warn("open %s", metafile);
331 digesttype = DIGEST_NONE;
334 for (; *argv != NULL; ++argv)
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)) {
349 err(EX_USAGE, "%s", to_name);
351 install(*argv, to_name, fset, iflags);
355 for (; *argv != to_name; ++argv)
356 install(*argv, to_name, fset, iflags | DIRECTORY);
361 /* can't do file1 file2 directory/file */
364 warnx("target directory `%s' does not exist",
367 warnx("target `%s' is not a directory",
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)) {
377 err(EX_OSERR, "%s", to_name);
379 if (to_sb.st_dev == from_sb.st_dev &&
380 to_sb.st_ino == from_sb.st_ino)
382 "%s and %s are the same file", *argv, to_name);
384 install(*argv, to_name, fset, iflags);
390 digest_file(const char *name)
393 switch (digesttype) {
395 return (MD5File(name, NULL));
396 case DIGEST_RIPEMD160:
397 return (RIPEMD160_File(name, NULL));
399 return (SHA1_File(name, NULL));
401 return (SHA256_File(name, NULL));
403 return (SHA512_File(name, NULL));
410 digest_init(DIGEST_CTX *c)
413 switch (digesttype) {
419 case DIGEST_RIPEMD160:
420 RIPEMD160_Init(&(c->RIPEMD160));
423 SHA1_Init(&(c->SHA1));
426 SHA256_Init(&(c->SHA256));
429 SHA512_Init(&(c->SHA512));
435 digest_update(DIGEST_CTX *c, const unsigned char *data, size_t len)
438 switch (digesttype) {
442 MD5Update(&(c->MD5), data, len);
444 case DIGEST_RIPEMD160:
445 RIPEMD160_Update(&(c->RIPEMD160), data, len);
448 SHA1_Update(&(c->SHA1), data, len);
451 SHA256_Update(&(c->SHA256), data, len);
454 SHA512_Update(&(c->SHA512), data, len);
460 digest_end(DIGEST_CTX *c, char *buf)
463 switch (digesttype) {
465 return (MD5End(&(c->MD5), buf));
466 case DIGEST_RIPEMD160:
467 return (RIPEMD160_End(&(c->RIPEMD160), buf));
469 return (SHA1_End(&(c->SHA1), buf));
471 return (SHA256_End(&(c->SHA256), buf));
473 return (SHA512_End(&(c->SHA512), buf));
481 * parse uid or gid from arg into id, returning non-zero if successful
484 parseid(const char *name, id_t *id)
488 *id = (id_t)strtoul(name, &ep, 10);
489 if (errno || *ep != '\0')
496 * mktemp implementation used mkstemp to avoid mktemp warnings. We
497 * really do need mktemp semantics here as we will be creating a link.
500 quiet_mktemp(char *template)
504 if ((fd = mkstemp(template)) == -1)
507 if (unlink(template) == -1)
508 err(EX_OSERR, "unlink %s", template);
514 * make a hard link, obeying dorename if set
515 * return -1 on failure
518 do_link(const char *from_name, const char *to_name,
519 const struct stat *target_sb)
521 char tmpl[MAXPATHLEN];
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);
531 if (target_sb->st_mode & S_IFDIR && rmdir(to_name) ==
534 err(EX_OSERR, "%s", to_name);
536 if (target_sb->st_flags & NOCHANGEBITS)
537 (void)chflags(to_name, target_sb->st_flags &
540 printf("install: link %s -> %s\n",
542 ret = rename(tmpl, to_name);
544 * If rename has posix semantics, then the temporary
545 * file may still exist when from_name and to_name point
546 * to the same file, so unlink it unconditionally.
553 printf("install: link %s -> %s\n",
555 return (link(from_name, to_name));
561 * Make a symbolic link, obeying dorename if set. Exit on failure.
564 do_symlink(const char *from_name, const char *to_name,
565 const struct stat *target_sb)
567 char tmpl[MAXPATHLEN];
569 if (safecopy && target_sb != NULL) {
570 (void)snprintf(tmpl, sizeof(tmpl), "%s.inst.XXXXXX", to_name);
571 /* This usage is safe. */
572 if (quiet_mktemp(tmpl) == NULL)
573 err(EX_OSERR, "%s: mktemp", tmpl);
575 if (symlink(from_name, tmpl) == -1)
576 err(EX_OSERR, "symlink %s -> %s", from_name, tmpl);
578 if (target_sb->st_mode & S_IFDIR && rmdir(to_name) == -1) {
580 err(EX_OSERR, "%s", to_name);
582 if (target_sb->st_flags & NOCHANGEBITS)
583 (void)chflags(to_name, target_sb->st_flags &
586 printf("install: symlink %s -> %s\n",
588 if (rename(tmpl, to_name) == -1) {
589 /* Remove temporary link before exiting. */
591 err(EX_OSERR, "%s: rename", to_name);
595 printf("install: symlink %s -> %s\n",
597 if (symlink(from_name, to_name) == -1)
598 err(EX_OSERR, "symlink %s -> %s", from_name, to_name);
604 * make a link from source to destination
607 makelink(const char *from_name, const char *to_name,
608 const struct stat *target_sb)
610 char src[MAXPATHLEN], dst[MAXPATHLEN], lnk[MAXPATHLEN];
613 /* Try hard links first. */
614 if (dolink & (LN_HARD|LN_MIXED)) {
615 if (do_link(from_name, to_name, target_sb) == -1) {
616 if ((dolink & LN_HARD) || errno != EXDEV)
617 err(EX_OSERR, "link %s -> %s", from_name, to_name);
619 if (stat(to_name, &to_sb))
620 err(EX_OSERR, "%s: stat", to_name);
621 if (S_ISREG(to_sb.st_mode)) {
623 * XXX: hard links to anything other than
624 * plain files are not metalogged
627 const char *oowner, *ogroup;
632 * XXX: use underlying perms, unless
633 * overridden on command line.
637 mode = (to_sb.st_mode & 0777);
647 dres = digest_file(from_name);
648 metadata_log(to_name, "file", NULL, NULL,
649 dres, to_sb.st_size);
660 /* Symbolic links. */
661 if (dolink & LN_ABSOLUTE) {
662 /* Convert source path to absolute. */
663 if (realpath(from_name, src) == NULL)
664 err(EX_OSERR, "%s: realpath", from_name);
665 do_symlink(src, to_name, target_sb);
666 /* XXX: src may point outside of destdir */
667 metadata_log(to_name, "link", NULL, src, NULL, 0);
671 if (dolink & LN_RELATIVE) {
672 char *to_name_copy, *cp, *d, *s;
674 /* Resolve pathnames. */
675 if (realpath(from_name, src) == NULL)
676 err(EX_OSERR, "%s: realpath", from_name);
679 * The last component of to_name may be a symlink,
680 * so use realpath to resolve only the directory.
682 to_name_copy = strdup(to_name);
683 if (to_name_copy == NULL)
684 err(EX_OSERR, "%s: strdup", to_name);
685 cp = dirname(to_name_copy);
686 if (realpath(cp, dst) == NULL)
687 err(EX_OSERR, "%s: realpath", cp);
688 /* .. and add the last component. */
689 if (strcmp(dst, "/") != 0) {
690 if (strlcat(dst, "/", sizeof(dst)) > sizeof(dst))
691 errx(1, "resolved pathname too long");
693 strcpy(to_name_copy, to_name);
694 cp = basename(to_name_copy);
695 if (strlcat(dst, cp, sizeof(dst)) > sizeof(dst))
696 errx(1, "resolved pathname too long");
699 /* Trim common path components. */
700 for (s = src, d = dst; *s == *d; s++, d++)
705 /* Count the number of directories we need to backtrack. */
706 for (++d, lnk[0] = '\0'; *d; d++)
708 (void)strlcat(lnk, "../", sizeof(lnk));
710 (void)strlcat(lnk, ++s, sizeof(lnk));
712 do_symlink(lnk, to_name, target_sb);
713 /* XXX: Link may point outside of destdir. */
714 metadata_log(to_name, "link", NULL, lnk, NULL, 0);
719 * If absolute or relative was not specified, try the names the
722 do_symlink(from_name, to_name, target_sb);
723 /* XXX: from_name may point outside of destdir. */
724 metadata_log(to_name, "link", NULL, from_name, NULL, 0);
729 * build a path name and install the file
732 install(const char *from_name, const char *to_name, u_long fset, u_int flags)
734 struct stat from_sb, temp_sb, to_sb;
735 struct timeval tvb[2];
736 int devnull, files_match, from_fd, serrno, target;
737 int tempcopy, temp_fd, to_fd;
738 char backup[MAXPATHLEN], *p, pathbuf[MAXPATHLEN], tempfile[MAXPATHLEN];
745 /* If try to install NULL file to a directory, fails. */
746 if (flags & DIRECTORY || strcmp(from_name, _PATH_DEVNULL)) {
748 if (stat(from_name, &from_sb))
749 err(EX_OSERR, "%s", from_name);
750 if (!S_ISREG(from_sb.st_mode)) {
752 err(EX_OSERR, "%s", from_name);
755 /* Build the target path. */
756 if (flags & DIRECTORY) {
757 (void)snprintf(pathbuf, sizeof(pathbuf), "%s/%s",
759 (p = strrchr(from_name, '/')) ? ++p : from_name);
767 target = (lstat(to_name, &to_sb) == 0);
770 if (target && !safecopy) {
771 if (to_sb.st_mode & S_IFDIR && rmdir(to_name) == -1)
772 err(EX_OSERR, "%s", to_name);
773 if (to_sb.st_flags & NOCHANGEBITS)
774 (void)chflags(to_name,
775 to_sb.st_flags & ~NOCHANGEBITS);
778 makelink(from_name, to_name, target ? &to_sb : NULL);
782 if (target && !S_ISREG(to_sb.st_mode) && !S_ISLNK(to_sb.st_mode)) {
788 /* Only copy safe if the target exists. */
789 tempcopy = safecopy && target;
791 if (!devnull && (from_fd = open(from_name, O_RDONLY, 0)) < 0)
792 err(EX_OSERR, "%s", from_name);
794 /* If we don't strip, we can compare first. */
795 if (docompare && !dostrip && target && S_ISREG(to_sb.st_mode)) {
796 if ((to_fd = open(to_name, O_RDONLY, 0)) < 0)
797 err(EX_OSERR, "%s", to_name);
799 files_match = to_sb.st_size == 0;
801 files_match = !(compare(from_fd, from_name,
802 (size_t)from_sb.st_size, to_fd,
803 to_name, (size_t)to_sb.st_size, &digestresult));
805 /* Close "to" file unless we match. */
812 to_fd = create_tempfile(to_name, tempfile,
815 err(EX_OSERR, "%s", tempfile);
817 if ((to_fd = create_newfile(to_name, target,
819 err(EX_OSERR, "%s", to_name);
821 (void)printf("install: %s -> %s\n",
825 digestresult = copy(from_fd, from_name, to_fd,
826 tempcopy ? tempfile : to_name, from_sb.st_size);
832 strip(tempcopy ? tempfile : to_name);
835 * Re-open our fd on the target, in case we used a strip
836 * that does not work in-place -- like GNU binutils strip.
839 to_fd = open(tempcopy ? tempfile : to_name, O_RDONLY, 0);
841 err(EX_OSERR, "stripping %s", to_name);
845 * Compare the stripped temp file with the target.
847 if (docompare && dostrip && target && S_ISREG(to_sb.st_mode)) {
850 /* Re-open to_fd using the real target name. */
851 if ((to_fd = open(to_name, O_RDONLY, 0)) < 0)
852 err(EX_OSERR, "%s", to_name);
854 if (fstat(temp_fd, &temp_sb)) {
856 (void)unlink(tempfile);
858 err(EX_OSERR, "%s", tempfile);
861 if (compare(temp_fd, tempfile, (size_t)temp_sb.st_size, to_fd,
862 to_name, (size_t)to_sb.st_size, &digestresult)
865 * If target has more than one link we need to
866 * replace it in order to snap the extra links.
867 * Need to preserve target file times, though.
869 if (to_sb.st_nlink != 1) {
870 tvb[0].tv_sec = to_sb.st_atime;
872 tvb[1].tv_sec = to_sb.st_mtime;
874 (void)utimes(tempfile, tvb);
877 (void)unlink(tempfile);
879 (void) close(temp_fd);
882 digestresult = digest_file(tempfile);
885 * Move the new file into place if doing a safe copy
886 * and the files are different (or just not compared).
888 if (tempcopy && !files_match) {
889 /* Try to turn off the immutable bits. */
890 if (to_sb.st_flags & NOCHANGEBITS)
891 (void)chflags(to_name, to_sb.st_flags & ~NOCHANGEBITS);
893 if ((size_t)snprintf(backup, MAXPATHLEN, "%s%s", to_name,
894 suffix) != strlen(to_name) + strlen(suffix)) {
896 errx(EX_OSERR, "%s: backup filename too long",
900 (void)printf("install: %s -> %s\n", to_name, backup);
901 if (unlink(backup) < 0 && errno != ENOENT) {
903 if (to_sb.st_flags & NOCHANGEBITS)
904 (void)chflags(to_name, to_sb.st_flags);
907 err(EX_OSERR, "unlink: %s", backup);
909 if (link(to_name, backup) < 0) {
912 if (to_sb.st_flags & NOCHANGEBITS)
913 (void)chflags(to_name, to_sb.st_flags);
915 err(EX_OSERR, "link: %s to %s", to_name,
920 (void)printf("install: %s -> %s\n", from_name, to_name);
921 if (rename(tempfile, to_name) < 0) {
925 err(EX_OSERR, "rename: %s to %s",
929 /* Re-open to_fd so we aren't hosed by the rename(2). */
931 if ((to_fd = open(to_name, O_RDONLY, 0)) < 0)
932 err(EX_OSERR, "%s", to_name);
936 * Preserve the timestamp of the source file if necessary.
938 if (dopreserve && !files_match && !devnull) {
939 tvb[0].tv_sec = from_sb.st_atime;
941 tvb[1].tv_sec = from_sb.st_mtime;
943 (void)utimes(to_name, tvb);
946 if (fstat(to_fd, &to_sb) == -1) {
948 (void)unlink(to_name);
950 err(EX_OSERR, "%s", to_name);
954 * Set owner, group, mode for target; do the chown first,
955 * chown may lose the setuid bits.
957 if (!dounpriv && ((gid != (gid_t)-1 && gid != to_sb.st_gid) ||
958 (uid != (uid_t)-1 && uid != to_sb.st_uid) ||
959 (mode != (to_sb.st_mode & ALLPERMS)))) {
960 /* Try to turn off the immutable bits. */
961 if (to_sb.st_flags & NOCHANGEBITS)
962 (void)fchflags(to_fd, to_sb.st_flags & ~NOCHANGEBITS);
966 (gid != (gid_t)-1 && gid != to_sb.st_gid) ||
967 (uid != (uid_t)-1 && uid != to_sb.st_uid))
968 if (fchown(to_fd, uid, gid) == -1) {
970 (void)unlink(to_name);
972 err(EX_OSERR,"%s: chown/chgrp", to_name);
975 if (mode != (to_sb.st_mode & ALLPERMS)) {
977 dounpriv ? mode & (S_IRWXU|S_IRWXG|S_IRWXO) : mode)) {
979 (void)unlink(to_name);
981 err(EX_OSERR, "%s: chmod", to_name);
986 * If provided a set of flags, set them, otherwise, preserve the
987 * flags, except for the dump flag.
988 * NFS does not support flags. Ignore EOPNOTSUPP flags if we're just
989 * trying to turn off UF_NODUMP. If we're trying to set real flags,
990 * then warn if the fs doesn't support it, otherwise fail.
992 if (!dounpriv & !devnull && (flags & SETFLAGS ||
993 (from_sb.st_flags & ~UF_NODUMP) != to_sb.st_flags) &&
995 flags & SETFLAGS ? fset : from_sb.st_flags & ~UF_NODUMP)) {
996 if (flags & SETFLAGS) {
997 if (errno == EOPNOTSUPP)
998 warn("%s: chflags", to_name);
1001 (void)unlink(to_name);
1003 err(EX_OSERR, "%s: chflags", to_name);
1010 (void)close(from_fd);
1012 metadata_log(to_name, "file", tvb, NULL, digestresult, to_sb.st_size);
1018 * compare two files; non-zero means files differ
1021 compare(int from_fd, const char *from_name __unused, size_t from_len,
1022 int to_fd, const char *to_name __unused, size_t to_len,
1031 if (from_len != to_len)
1034 if (from_len <= MAX_CMP_SIZE) {
1038 if (trymmap(from_fd) && trymmap(to_fd)) {
1039 p = mmap(NULL, from_len, PROT_READ, MAP_SHARED,
1041 if (p == (char *)MAP_FAILED)
1043 q = mmap(NULL, from_len, PROT_READ, MAP_SHARED,
1045 if (q == (char *)MAP_FAILED) {
1046 munmap(p, from_len);
1050 rv = memcmp(p, q, from_len);
1052 digest_update(&ctx, p, from_len);
1053 munmap(p, from_len);
1054 munmap(q, from_len);
1058 if (!done_compare) {
1059 char buf1[MAXBSIZE];
1060 char buf2[MAXBSIZE];
1064 lseek(from_fd, 0, SEEK_SET);
1065 lseek(to_fd, 0, SEEK_SET);
1067 n1 = read(from_fd, buf1, sizeof(buf1));
1071 n2 = read(to_fd, buf2, n1);
1073 rv = memcmp(buf1, buf2, n1);
1075 rv = 1; /* out of sync */
1077 rv = 1; /* read failure */
1078 digest_update(&ctx, buf1, n1);
1080 lseek(from_fd, 0, SEEK_SET);
1081 lseek(to_fd, 0, SEEK_SET);
1084 rv = 1; /* don't bother in this case */
1086 if (dresp != NULL) {
1088 *dresp = digest_end(&ctx, NULL);
1090 (void)digest_end(&ctx, NULL);
1097 * create_tempfile --
1098 * create a temporary file based on path and open it
1101 create_tempfile(const char *path, char *temp, size_t tsize)
1105 (void)strncpy(temp, path, tsize);
1106 temp[tsize - 1] = '\0';
1107 if ((p = strrchr(temp, '/')) != NULL)
1111 (void)strncpy(p, "INS@XXXX", &temp[tsize - 1] - p);
1112 temp[tsize - 1] = '\0';
1113 return (mkstemp(temp));
1118 * create a new file, overwriting an existing one if necessary
1121 create_newfile(const char *path, int target, struct stat *sbp)
1123 char backup[MAXPATHLEN];
1124 int saved_errno = 0;
1129 * Unlink now... avoid ETXTBSY errors later. Try to turn
1130 * off the append/immutable bits -- if we fail, go ahead,
1133 if (sbp->st_flags & NOCHANGEBITS)
1134 (void)chflags(path, sbp->st_flags & ~NOCHANGEBITS);
1137 if ((size_t)snprintf(backup, MAXPATHLEN, "%s%s",
1138 path, suffix) != strlen(path) + strlen(suffix)) {
1139 saved_errno = errno;
1140 if (sbp->st_flags & NOCHANGEBITS)
1141 (void)chflags(path, sbp->st_flags);
1142 errno = saved_errno;
1143 errx(EX_OSERR, "%s: backup filename too long",
1146 (void)snprintf(backup, MAXPATHLEN, "%s%s",
1149 (void)printf("install: %s -> %s\n",
1151 if (rename(path, backup) < 0) {
1152 saved_errno = errno;
1153 if (sbp->st_flags & NOCHANGEBITS)
1154 (void)chflags(path, sbp->st_flags);
1155 errno = saved_errno;
1156 err(EX_OSERR, "rename: %s to %s", path, backup);
1159 if (unlink(path) < 0)
1160 saved_errno = errno;
1163 newfd = open(path, O_CREAT | O_RDWR | O_TRUNC, S_IRUSR | S_IWUSR);
1164 if (newfd < 0 && saved_errno != 0)
1165 errno = saved_errno;
1171 * copy from one file to another
1174 copy(int from_fd, const char *from_name, int to_fd, const char *to_name,
1179 char *p, buf[MAXBSIZE];
1183 /* Rewind file descriptors. */
1184 if (lseek(from_fd, (off_t)0, SEEK_SET) == (off_t)-1)
1185 err(EX_OSERR, "lseek: %s", from_name);
1186 if (lseek(to_fd, (off_t)0, SEEK_SET) == (off_t)-1)
1187 err(EX_OSERR, "lseek: %s", to_name);
1192 * Mmap and write if less than 8M (the limit is so we don't totally
1193 * trash memory on big files. This is really a minor hack, but it
1194 * wins some CPU back.
1197 if (size <= 8 * 1048576 && trymmap(from_fd) &&
1198 (p = mmap(NULL, (size_t)size, PROT_READ, MAP_SHARED,
1199 from_fd, (off_t)0)) != (char *)MAP_FAILED) {
1200 nw = write(to_fd, p, size);
1203 (void)unlink(to_name);
1206 "short write to %s: %jd bytes written, %jd bytes asked to write",
1207 to_name, (uintmax_t)nw, (uintmax_t)size);
1210 err(EX_OSERR, "%s", to_name);
1213 digest_update(&ctx, p, size);
1214 (void)munmap(p, size);
1218 while ((nr = read(from_fd, buf, sizeof(buf))) > 0) {
1219 if ((nw = write(to_fd, buf, nr)) != nr) {
1221 (void)unlink(to_name);
1224 "short write to %s: %jd bytes written, %jd bytes asked to write",
1225 to_name, (uintmax_t)nw,
1229 err(EX_OSERR, "%s", to_name);
1232 digest_update(&ctx, buf, nr);
1236 (void)unlink(to_name);
1238 err(EX_OSERR, "%s", from_name);
1241 return (digest_end(&ctx, NULL));
1246 * use strip(1) to strip the target file
1249 strip(const char *to_name)
1251 const char *stripbin;
1257 (void)unlink(to_name);
1259 err(EX_TEMPFAIL, "fork");
1261 stripbin = getenv("STRIPBIN");
1262 if (stripbin == NULL)
1264 execlp(stripbin, stripbin, to_name, (char *)NULL);
1265 err(EX_OSERR, "exec(%s)", stripbin);
1267 if (wait(&status) == -1 || status) {
1269 (void)unlink(to_name);
1270 errc(EX_SOFTWARE, serrno, "wait");
1278 * build directory hierarchy
1281 install_dir(char *path)
1287 for (p = path;; ++p)
1288 if (!*p || (p != path && *p == '/')) {
1291 if (stat(path, &sb)) {
1292 if (errno != ENOENT || mkdir(path, 0755) < 0) {
1293 err(EX_OSERR, "mkdir %s", path);
1296 (void)printf("install: mkdir %s\n",
1298 } else if (!S_ISDIR(sb.st_mode))
1299 errx(EX_OSERR, "%s exists but is not a directory", path);
1305 if ((gid != (gid_t)-1 || uid != (uid_t)-1) &&
1306 chown(path, uid, gid))
1307 warn("chown %u:%u %s", uid, gid, path);
1308 /* XXXBED: should we do the chmod in the dounpriv case? */
1309 if (chmod(path, mode))
1310 warn("chmod %o %s", mode, path);
1312 metadata_log(path, "dir", NULL, NULL, NULL, 0);
1317 * if metafp is not NULL, output mtree(8) full path name and settings to
1318 * metafp, to allow permissions to be set correctly by other tools,
1319 * or to allow integrity checks to be performed.
1322 metadata_log(const char *path, const char *type, struct timeval *tv,
1323 const char *slink, const char *digestresult, off_t size)
1325 static const char extra[] = { ' ', '\t', '\n', '\\', '#', '\0' };
1329 struct flock metalog_lock;
1333 /* Buffer for strsvis(3). */
1334 buf = (char *)malloc(4 * strlen(path) + 1);
1336 warnx("%s", strerror(ENOMEM));
1340 /* Lock log file. */
1341 metalog_lock.l_start = 0;
1342 metalog_lock.l_len = 0;
1343 metalog_lock.l_whence = SEEK_SET;
1344 metalog_lock.l_type = F_WRLCK;
1345 if (fcntl(fileno(metafp), F_SETLKW, &metalog_lock) == -1) {
1346 warn("can't lock %s", metafile);
1351 /* Remove destdir. */
1354 destlen = strlen(destdir);
1355 if (strncmp(p, destdir, destlen) == 0 &&
1356 (p[destlen] == '/' || p[destlen] == '\0'))
1359 while (*p && *p == '/')
1361 strsvis(buf, p, VIS_OCTAL, extra);
1363 /* Print details. */
1364 fprintf(metafp, ".%s%s type=%s", *p ? "/" : "", p, type);
1366 fprintf(metafp, " uname=%s", owner);
1368 fprintf(metafp, " gname=%s", group);
1369 fprintf(metafp, " mode=%#o", mode);
1371 strsvis(buf, slink, VIS_CSTYLE, extra); /* encode link */
1372 fprintf(metafp, " link=%s", buf);
1374 if (*type == 'f') /* type=file */
1375 fprintf(metafp, " size=%lld", (long long)size);
1376 if (tv != NULL && dopreserve)
1377 fprintf(metafp, " time=%lld.%ld",
1378 (long long)tv[1].tv_sec, (long)tv[1].tv_usec);
1379 if (digestresult && digest)
1380 fprintf(metafp, " %s=%s", digest, digestresult);
1382 fprintf(metafp, " flags=%s", fflags);
1384 fprintf(metafp, " tags=%s", tags);
1385 fputc('\n', metafp);
1389 /* Unlock log file. */
1390 metalog_lock.l_type = F_UNLCK;
1391 if (fcntl(fileno(metafp), F_SETLKW, &metalog_lock) == -1)
1392 warn("can't unlock %s", metafile);
1398 * print a usage message and die
1403 (void)fprintf(stderr,
1404 "usage: install [-bCcpSsUv] [-f flags] [-g group] [-m mode] [-o owner]\n"
1405 " [-M log] [-D dest] [-h hash] [-T tags]\n"
1406 " [-B suffix] [-l linkflags] [-N dbdir]\n"
1408 " install [-bCcpSsUv] [-f flags] [-g group] [-m mode] [-o owner]\n"
1409 " [-M log] [-D dest] [-h hash] [-T tags]\n"
1410 " [-B suffix] [-l linkflags] [-N dbdir]\n"
1411 " file1 ... fileN directory\n"
1412 " install -dU [-vU] [-g group] [-m mode] [-N dbdir] [-o owner]\n"
1413 " [-M log] [-D dest] [-h hash] [-T tags]\n"
1414 " directory ...\n");
1421 * return true (1) if mmap should be tried, false (0) if not.
1427 * The ifdef is for bootstrapping - f_fstypename doesn't exist in
1428 * pre-Lite2-merge systems.
1433 if (fstatfs(fd, &stfs) != 0)
1435 if (strcmp(stfs.f_fstypename, "ufs") == 0 ||
1436 strcmp(stfs.f_fstypename, "cd9660") == 0)