2 * Copyright (c) 1987, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 static const char copyright[] =
36 "@(#) Copyright (c) 1987, 1993\n\
37 The Regents of the University of California. All rights reserved.\n";
42 static char sccsid[] = "@(#)xinstall.c 8.1 (Berkeley) 7/21/93";
46 #include <sys/cdefs.h>
47 __FBSDID("$FreeBSD$");
49 #include <sys/param.h>
51 #include <sys/mount.h>
70 /* Bootstrap aid - this doesn't exist in most older releases */
72 #define MAP_FAILED ((void *)-1) /* from <sys/mman.h> */
75 #define MAX_CMP_SIZE (16 * 1024 * 1024)
77 #define DIRECTORY 0x01 /* Tell install it's a directory. */
78 #define SETFLAGS 0x02 /* Tell install to set flags. */
79 #define NOCHANGEBITS (UF_IMMUTABLE | UF_APPEND | SF_IMMUTABLE | SF_APPEND)
80 #define BACKUP_SUFFIX ".old"
86 int dobackup, docompare, dodir, dopreserve, dostrip, nommap, safecopy, verbose;
87 mode_t mode = S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH;
88 const char *suffix = BACKUP_SUFFIX;
90 void copy(int, const char *, int, const char *, off_t);
91 int compare(int, const char *, size_t, int, const char *, size_t);
92 int create_newfile(const char *, int, struct stat *);
93 int create_tempfile(const char *, char *, size_t);
94 void install(const char *, const char *, u_long, u_int);
95 void install_dir(char *);
96 u_long numeric_id(const char *, const char *);
97 void strip(const char *);
102 main(int argc, char *argv[])
104 struct stat from_sb, to_sb;
110 const char *group, *owner, *to_name;
113 group = owner = NULL;
114 while ((ch = getopt(argc, argv, "B:bCcdf:g:Mm:o:pSsv")) != -1)
126 /* For backwards compatibility. */
133 if (strtofflags(&flags, &fset, NULL))
134 errx(EX_USAGE, "%s: invalid flag", flags);
144 if (!(set = setmode(optarg)))
145 errx(EX_USAGE, "invalid file mode: %s",
147 mode = getmode(set, 0);
154 docompare = dopreserve = 1;
172 /* some options make no sense when creating directories */
173 if (dostrip && dodir) {
174 warnx("-d and -s may not be specified together");
178 if (getenv("DONTSTRIP") != NULL) {
179 warnx("DONTSTRIP set - will not strip installed binaries");
183 /* must have at least two arguments, except when creating directories */
184 if (argc == 0 || (argc == 1 && !dodir))
187 /* need to make a temp copy so we can compare stripped version */
188 if (docompare && dostrip)
191 /* get group and owner id's */
193 if ((gp = getgrnam(group)) != NULL)
196 gid = (gid_t)numeric_id(group, "group");
201 if ((pp = getpwnam(owner)) != NULL)
204 uid = (uid_t)numeric_id(owner, "user");
209 for (; *argv != NULL; ++argv)
215 no_target = stat(to_name = argv[argc - 1], &to_sb);
216 if (!no_target && S_ISDIR(to_sb.st_mode)) {
217 for (; *argv != to_name; ++argv)
218 install(*argv, to_name, fset, iflags | DIRECTORY);
223 /* can't do file1 file2 directory/file */
226 warnx("target directory `%s' does not exist",
229 warnx("target `%s' is not a directory",
235 if (stat(*argv, &from_sb))
236 err(EX_OSERR, "%s", *argv);
237 if (!S_ISREG(to_sb.st_mode)) {
239 err(EX_OSERR, "%s", to_name);
241 if (to_sb.st_dev == from_sb.st_dev &&
242 to_sb.st_ino == from_sb.st_ino)
244 "%s and %s are the same file", *argv, to_name);
246 install(*argv, to_name, fset, iflags);
252 numeric_id(const char *name, const char *type)
259 * We know that uid_t's and gid_t's are unsigned longs.
262 val = strtoul(name, &ep, 10);
264 err(EX_NOUSER, "%s", name);
266 errx(EX_NOUSER, "unknown %s %s", type, name);
272 * build a path name and install the file
275 install(const char *from_name, const char *to_name, u_long fset, u_int flags)
277 struct stat from_sb, temp_sb, to_sb;
278 struct timeval tvb[2];
279 int devnull, files_match, from_fd, serrno, target;
280 int tempcopy, temp_fd, to_fd;
281 char backup[MAXPATHLEN], *p, pathbuf[MAXPATHLEN], tempfile[MAXPATHLEN];
287 /* If try to install NULL file to a directory, fails. */
288 if (flags & DIRECTORY || strcmp(from_name, _PATH_DEVNULL)) {
289 if (stat(from_name, &from_sb))
290 err(EX_OSERR, "%s", from_name);
291 if (!S_ISREG(from_sb.st_mode)) {
293 err(EX_OSERR, "%s", from_name);
295 /* Build the target path. */
296 if (flags & DIRECTORY) {
297 (void)snprintf(pathbuf, sizeof(pathbuf), "%s/%s",
299 (p = strrchr(from_name, '/')) ? ++p : from_name);
307 target = stat(to_name, &to_sb) == 0;
309 /* Only install to regular files. */
310 if (target && !S_ISREG(to_sb.st_mode)) {
316 /* Only copy safe if the target exists. */
317 tempcopy = safecopy && target;
319 if (!devnull && (from_fd = open(from_name, O_RDONLY, 0)) < 0)
320 err(EX_OSERR, "%s", from_name);
322 /* If we don't strip, we can compare first. */
323 if (docompare && !dostrip && target) {
324 if ((to_fd = open(to_name, O_RDONLY, 0)) < 0)
325 err(EX_OSERR, "%s", to_name);
327 files_match = to_sb.st_size == 0;
329 files_match = !(compare(from_fd, from_name,
330 (size_t)from_sb.st_size, to_fd,
331 to_name, (size_t)to_sb.st_size));
333 /* Close "to" file unless we match. */
340 to_fd = create_tempfile(to_name, tempfile,
343 err(EX_OSERR, "%s", tempfile);
345 if ((to_fd = create_newfile(to_name, target,
347 err(EX_OSERR, "%s", to_name);
349 (void)printf("install: %s -> %s\n",
353 copy(from_fd, from_name, to_fd,
354 tempcopy ? tempfile : to_name, from_sb.st_size);
358 strip(tempcopy ? tempfile : to_name);
361 * Re-open our fd on the target, in case we used a strip
362 * that does not work in-place -- like GNU binutils strip.
365 to_fd = open(tempcopy ? tempfile : to_name, O_RDONLY, 0);
367 err(EX_OSERR, "stripping %s", to_name);
371 * Compare the stripped temp file with the target.
373 if (docompare && dostrip && target) {
376 /* Re-open to_fd using the real target name. */
377 if ((to_fd = open(to_name, O_RDONLY, 0)) < 0)
378 err(EX_OSERR, "%s", to_name);
380 if (fstat(temp_fd, &temp_sb)) {
382 (void)unlink(tempfile);
384 err(EX_OSERR, "%s", tempfile);
387 if (compare(temp_fd, tempfile, (size_t)temp_sb.st_size, to_fd,
388 to_name, (size_t)to_sb.st_size) == 0) {
390 * If target has more than one link we need to
391 * replace it in order to snap the extra links.
392 * Need to preserve target file times, though.
394 if (to_sb.st_nlink != 1) {
395 tvb[0].tv_sec = to_sb.st_atime;
397 tvb[1].tv_sec = to_sb.st_mtime;
399 (void)utimes(tempfile, tvb);
402 (void)unlink(tempfile);
404 (void) close(temp_fd);
409 * Move the new file into place if doing a safe copy
410 * and the files are different (or just not compared).
412 if (tempcopy && !files_match) {
413 /* Try to turn off the immutable bits. */
414 if (to_sb.st_flags & NOCHANGEBITS)
415 (void)chflags(to_name, to_sb.st_flags & ~NOCHANGEBITS);
417 if ((size_t)snprintf(backup, MAXPATHLEN, "%s%s", to_name,
418 suffix) != strlen(to_name) + strlen(suffix)) {
420 errx(EX_OSERR, "%s: backup filename too long",
424 (void)printf("install: %s -> %s\n", to_name, backup);
425 if (rename(to_name, backup) < 0) {
429 err(EX_OSERR, "rename: %s to %s", to_name,
434 (void)printf("install: %s -> %s\n", from_name, to_name);
435 if (rename(tempfile, to_name) < 0) {
439 err(EX_OSERR, "rename: %s to %s",
443 /* Re-open to_fd so we aren't hosed by the rename(2). */
445 if ((to_fd = open(to_name, O_RDONLY, 0)) < 0)
446 err(EX_OSERR, "%s", to_name);
450 * Preserve the timestamp of the source file if necessary.
452 if (dopreserve && !files_match && !devnull) {
453 tvb[0].tv_sec = from_sb.st_atime;
455 tvb[1].tv_sec = from_sb.st_mtime;
457 (void)utimes(to_name, tvb);
460 if (fstat(to_fd, &to_sb) == -1) {
462 (void)unlink(to_name);
464 err(EX_OSERR, "%s", to_name);
468 * Set owner, group, mode for target; do the chown first,
469 * chown may lose the setuid bits.
471 if ((gid != (gid_t)-1 && gid != to_sb.st_gid) ||
472 (uid != (uid_t)-1 && uid != to_sb.st_uid) ||
473 (mode != (to_sb.st_mode & ALLPERMS))) {
474 /* Try to turn off the immutable bits. */
475 if (to_sb.st_flags & NOCHANGEBITS)
476 (void)fchflags(to_fd, to_sb.st_flags & ~NOCHANGEBITS);
479 if ((gid != (gid_t)-1 && gid != to_sb.st_gid) ||
480 (uid != (uid_t)-1 && uid != to_sb.st_uid))
481 if (fchown(to_fd, uid, gid) == -1) {
483 (void)unlink(to_name);
485 err(EX_OSERR,"%s: chown/chgrp", to_name);
488 if (mode != (to_sb.st_mode & ALLPERMS))
489 if (fchmod(to_fd, mode)) {
491 (void)unlink(to_name);
493 err(EX_OSERR, "%s: chmod", to_name);
497 * If provided a set of flags, set them, otherwise, preserve the
498 * flags, except for the dump flag.
499 * NFS does not support flags. Ignore EOPNOTSUPP flags if we're just
500 * trying to turn off UF_NODUMP. If we're trying to set real flags,
501 * then warn if the fs doesn't support it, otherwise fail.
503 if (!devnull && (flags & SETFLAGS ||
504 (from_sb.st_flags & ~UF_NODUMP) != to_sb.st_flags) &&
506 flags & SETFLAGS ? fset : from_sb.st_flags & ~UF_NODUMP)) {
507 if (flags & SETFLAGS) {
508 if (errno == EOPNOTSUPP)
509 warn("%s: chflags", to_name);
512 (void)unlink(to_name);
514 err(EX_OSERR, "%s: chflags", to_name);
521 (void)close(from_fd);
526 * compare two files; non-zero means files differ
529 compare(int from_fd, const char *from_name __unused, size_t from_len,
530 int to_fd, const char *to_name __unused, size_t to_len)
537 if (from_len != to_len)
540 if (from_len <= MAX_CMP_SIZE) {
542 if (trymmap(from_fd) && trymmap(to_fd)) {
543 p = mmap(NULL, from_len, PROT_READ, MAP_SHARED, from_fd, (off_t)0);
544 if (p == (char *)MAP_FAILED)
546 q = mmap(NULL, from_len, PROT_READ, MAP_SHARED, to_fd, (off_t)0);
547 if (q == (char *)MAP_FAILED) {
552 rv = memcmp(p, q, from_len);
564 lseek(from_fd, 0, SEEK_SET);
565 lseek(to_fd, 0, SEEK_SET);
567 n1 = read(from_fd, buf1, sizeof(buf1));
571 n2 = read(to_fd, buf2, n1);
573 rv = memcmp(buf1, buf2, n1);
575 rv = 1; /* out of sync */
577 rv = 1; /* read failure */
579 lseek(from_fd, 0, SEEK_SET);
580 lseek(to_fd, 0, SEEK_SET);
583 rv = 1; /* don't bother in this case */
590 * create a temporary file based on path and open it
593 create_tempfile(const char *path, char *temp, size_t tsize)
597 (void)strncpy(temp, path, tsize);
598 temp[tsize - 1] = '\0';
599 if ((p = strrchr(temp, '/')) != NULL)
603 (void)strncpy(p, "INS@XXXX", &temp[tsize - 1] - p);
604 temp[tsize - 1] = '\0';
605 return (mkstemp(temp));
610 * create a new file, overwriting an existing one if necessary
613 create_newfile(const char *path, int target, struct stat *sbp)
615 char backup[MAXPATHLEN];
621 * Unlink now... avoid ETXTBSY errors later. Try to turn
622 * off the append/immutable bits -- if we fail, go ahead,
625 if (sbp->st_flags & NOCHANGEBITS)
626 (void)chflags(path, sbp->st_flags & ~NOCHANGEBITS);
629 if ((size_t)snprintf(backup, MAXPATHLEN, "%s%s",
630 path, suffix) != strlen(path) + strlen(suffix))
631 errx(EX_OSERR, "%s: backup filename too long",
633 (void)snprintf(backup, MAXPATHLEN, "%s%s",
636 (void)printf("install: %s -> %s\n",
638 if (rename(path, backup) < 0)
639 err(EX_OSERR, "rename: %s to %s", path, backup);
641 if (unlink(path) < 0)
645 newfd = open(path, O_CREAT | O_RDWR | O_TRUNC, S_IRUSR | S_IWUSR);
646 if (newfd < 0 && saved_errno != 0)
653 * copy from one file to another
656 copy(int from_fd, const char *from_name, int to_fd, const char *to_name,
661 char *p, buf[MAXBSIZE];
664 /* Rewind file descriptors. */
665 if (lseek(from_fd, (off_t)0, SEEK_SET) == (off_t)-1)
666 err(EX_OSERR, "lseek: %s", from_name);
667 if (lseek(to_fd, (off_t)0, SEEK_SET) == (off_t)-1)
668 err(EX_OSERR, "lseek: %s", to_name);
671 * Mmap and write if less than 8M (the limit is so we don't totally
672 * trash memory on big files. This is really a minor hack, but it
673 * wins some CPU back.
676 if (size <= 8 * 1048576 && trymmap(from_fd) &&
677 (p = mmap(NULL, (size_t)size, PROT_READ, MAP_SHARED,
678 from_fd, (off_t)0)) != (char *)MAP_FAILED) {
679 nw = write(to_fd, p, size);
682 (void)unlink(to_name);
685 "short write to %s: %jd bytes written, %jd bytes asked to write",
686 to_name, (uintmax_t)nw, (uintmax_t)size);
689 err(EX_OSERR, "%s", to_name);
695 while ((nr = read(from_fd, buf, sizeof(buf))) > 0)
696 if ((nw = write(to_fd, buf, nr)) != nr) {
698 (void)unlink(to_name);
701 "short write to %s: %jd bytes written, %jd bytes asked to write",
702 to_name, (uintmax_t)nw,
706 err(EX_OSERR, "%s", to_name);
711 (void)unlink(to_name);
713 err(EX_OSERR, "%s", from_name);
720 * use strip(1) to strip the target file
723 strip(const char *to_name)
725 const char *stripbin;
731 (void)unlink(to_name);
733 err(EX_TEMPFAIL, "fork");
735 stripbin = getenv("STRIPBIN");
736 if (stripbin == NULL)
738 execlp(stripbin, stripbin, to_name, (char *)NULL);
739 err(EX_OSERR, "exec(%s)", stripbin);
741 if (wait(&status) == -1 || status) {
743 (void)unlink(to_name);
744 errc(EX_SOFTWARE, serrno, "wait");
752 * build directory hierarchy
755 install_dir(char *path)
762 if (!*p || (p != path && *p == '/')) {
765 if (stat(path, &sb)) {
766 if (errno != ENOENT || mkdir(path, 0755) < 0) {
767 err(EX_OSERR, "mkdir %s", path);
770 (void)printf("install: mkdir %s\n",
772 } else if (!S_ISDIR(sb.st_mode))
773 errx(EX_OSERR, "%s exists but is not a directory", path);
778 if ((gid != (gid_t)-1 || uid != (uid_t)-1) && chown(path, uid, gid))
779 warn("chown %u:%u %s", uid, gid, path);
780 if (chmod(path, mode))
781 warn("chmod %o %s", mode, path);
786 * print a usage message and die
791 (void)fprintf(stderr,
792 "usage: install [-bCcMpSsv] [-B suffix] [-f flags] [-g group] [-m mode]\n"
793 " [-o owner] file1 file2\n"
794 " install [-bCcMpSsv] [-B suffix] [-f flags] [-g group] [-m mode]\n"
795 " [-o owner] file1 ... fileN directory\n"
796 " install -d [-v] [-g group] [-m mode] [-o owner] directory ...\n");
803 * return true (1) if mmap should be tried, false (0) if not.
809 * The ifdef is for bootstrapping - f_fstypename doesn't exist in
810 * pre-Lite2-merge systems.
815 if (nommap || fstatfs(fd, &stfs) != 0)
817 if (strcmp(stfs.f_fstypename, "ufs") == 0 ||
818 strcmp(stfs.f_fstypename, "cd9660") == 0)