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>
68 /* Bootstrap aid - this doesn't exist in most older releases */
70 #define MAP_FAILED ((void *)-1) /* from <sys/mman.h> */
73 #define MAX_CMP_SIZE (16 * 1024 * 1024)
75 #define DIRECTORY 0x01 /* Tell install it's a directory. */
76 #define SETFLAGS 0x02 /* Tell install to set flags. */
77 #define NOCHANGEBITS (UF_IMMUTABLE | UF_APPEND | SF_IMMUTABLE | SF_APPEND)
78 #define BACKUP_SUFFIX ".old"
84 int dobackup, docompare, dodir, dopreserve, dostrip, nommap, safecopy, verbose;
85 mode_t mode = S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH;
86 const char *suffix = BACKUP_SUFFIX;
88 static int compare(int, const char *, size_t, int, const char *, size_t);
89 static void copy(int, const char *, int, const char *, off_t);
90 static int create_newfile(const char *, int, struct stat *);
91 static int create_tempfile(const char *, char *, size_t);
92 static void install(const char *, const char *, u_long, u_int);
93 static void install_dir(char *);
94 static u_long numeric_id(const char *, const char *);
95 static void strip(const char *);
96 static int trymmap(int);
97 static void usage(void);
100 main(int argc, char *argv[])
102 struct stat from_sb, to_sb;
108 const char *group, *owner, *to_name;
111 group = owner = NULL;
112 while ((ch = getopt(argc, argv, "B:bCcdf:g:Mm:o:pSsv")) != -1)
124 /* For backwards compatibility. */
131 if (strtofflags(&flags, &fset, NULL))
132 errx(EX_USAGE, "%s: invalid flag", flags);
142 if (!(set = setmode(optarg)))
143 errx(EX_USAGE, "invalid file mode: %s",
145 mode = getmode(set, 0);
152 docompare = dopreserve = 1;
170 /* some options make no sense when creating directories */
171 if (dostrip && dodir) {
172 warnx("-d and -s may not be specified together");
176 if (getenv("DONTSTRIP") != NULL) {
177 warnx("DONTSTRIP set - will not strip installed binaries");
181 /* must have at least two arguments, except when creating directories */
182 if (argc == 0 || (argc == 1 && !dodir))
185 /* need to make a temp copy so we can compare stripped version */
186 if (docompare && dostrip)
189 /* get group and owner id's */
191 if ((gp = getgrnam(group)) != NULL)
194 gid = (gid_t)numeric_id(group, "group");
199 if ((pp = getpwnam(owner)) != NULL)
202 uid = (uid_t)numeric_id(owner, "user");
207 for (; *argv != NULL; ++argv)
213 no_target = stat(to_name = argv[argc - 1], &to_sb);
214 if (!no_target && S_ISDIR(to_sb.st_mode)) {
215 for (; *argv != to_name; ++argv)
216 install(*argv, to_name, fset, iflags | DIRECTORY);
221 /* can't do file1 file2 directory/file */
224 warnx("target directory `%s' does not exist",
227 warnx("target `%s' is not a directory",
233 if (stat(*argv, &from_sb))
234 err(EX_OSERR, "%s", *argv);
235 if (!S_ISREG(to_sb.st_mode)) {
237 err(EX_OSERR, "%s", to_name);
239 if (to_sb.st_dev == from_sb.st_dev &&
240 to_sb.st_ino == from_sb.st_ino)
242 "%s and %s are the same file", *argv, to_name);
244 install(*argv, to_name, fset, iflags);
250 numeric_id(const char *name, const char *type)
257 * We know that uid_t's and gid_t's are unsigned longs.
260 val = strtoul(name, &ep, 10);
262 err(EX_NOUSER, "%s", name);
264 errx(EX_NOUSER, "unknown %s %s", type, name);
270 * build a path name and install the file
273 install(const char *from_name, const char *to_name, u_long fset, u_int flags)
275 struct stat from_sb, temp_sb, to_sb;
276 struct timeval tvb[2];
277 int devnull, files_match, from_fd, serrno, target;
278 int tempcopy, temp_fd, to_fd;
279 char backup[MAXPATHLEN], *p, pathbuf[MAXPATHLEN], tempfile[MAXPATHLEN];
285 /* If try to install NULL file to a directory, fails. */
286 if (flags & DIRECTORY || strcmp(from_name, _PATH_DEVNULL)) {
287 if (stat(from_name, &from_sb))
288 err(EX_OSERR, "%s", from_name);
289 if (!S_ISREG(from_sb.st_mode)) {
291 err(EX_OSERR, "%s", from_name);
293 /* Build the target path. */
294 if (flags & DIRECTORY) {
295 (void)snprintf(pathbuf, sizeof(pathbuf), "%s/%s",
297 (p = strrchr(from_name, '/')) ? ++p : from_name);
305 target = stat(to_name, &to_sb) == 0;
307 /* Only install to regular files. */
308 if (target && !S_ISREG(to_sb.st_mode)) {
314 /* Only copy safe if the target exists. */
315 tempcopy = safecopy && target;
317 if (!devnull && (from_fd = open(from_name, O_RDONLY, 0)) < 0)
318 err(EX_OSERR, "%s", from_name);
320 /* If we don't strip, we can compare first. */
321 if (docompare && !dostrip && target) {
322 if ((to_fd = open(to_name, O_RDONLY, 0)) < 0)
323 err(EX_OSERR, "%s", to_name);
325 files_match = to_sb.st_size == 0;
327 files_match = !(compare(from_fd, from_name,
328 (size_t)from_sb.st_size, to_fd,
329 to_name, (size_t)to_sb.st_size));
331 /* Close "to" file unless we match. */
338 to_fd = create_tempfile(to_name, tempfile,
341 err(EX_OSERR, "%s", tempfile);
343 if ((to_fd = create_newfile(to_name, target,
345 err(EX_OSERR, "%s", to_name);
347 (void)printf("install: %s -> %s\n",
351 copy(from_fd, from_name, to_fd,
352 tempcopy ? tempfile : to_name, from_sb.st_size);
356 strip(tempcopy ? tempfile : to_name);
359 * Re-open our fd on the target, in case we used a strip
360 * that does not work in-place -- like GNU binutils strip.
363 to_fd = open(tempcopy ? tempfile : to_name, O_RDONLY, 0);
365 err(EX_OSERR, "stripping %s", to_name);
369 * Compare the stripped temp file with the target.
371 if (docompare && dostrip && target) {
374 /* Re-open to_fd using the real target name. */
375 if ((to_fd = open(to_name, O_RDONLY, 0)) < 0)
376 err(EX_OSERR, "%s", to_name);
378 if (fstat(temp_fd, &temp_sb)) {
380 (void)unlink(tempfile);
382 err(EX_OSERR, "%s", tempfile);
385 if (compare(temp_fd, tempfile, (size_t)temp_sb.st_size, to_fd,
386 to_name, (size_t)to_sb.st_size) == 0) {
388 * If target has more than one link we need to
389 * replace it in order to snap the extra links.
390 * Need to preserve target file times, though.
392 if (to_sb.st_nlink != 1) {
393 tvb[0].tv_sec = to_sb.st_atime;
395 tvb[1].tv_sec = to_sb.st_mtime;
397 (void)utimes(tempfile, tvb);
400 (void)unlink(tempfile);
402 (void) close(temp_fd);
407 * Move the new file into place if doing a safe copy
408 * and the files are different (or just not compared).
410 if (tempcopy && !files_match) {
411 /* Try to turn off the immutable bits. */
412 if (to_sb.st_flags & NOCHANGEBITS)
413 (void)chflags(to_name, to_sb.st_flags & ~NOCHANGEBITS);
415 if ((size_t)snprintf(backup, MAXPATHLEN, "%s%s", to_name,
416 suffix) != strlen(to_name) + strlen(suffix)) {
418 errx(EX_OSERR, "%s: backup filename too long",
422 (void)printf("install: %s -> %s\n", to_name, backup);
423 if (rename(to_name, backup) < 0) {
427 err(EX_OSERR, "rename: %s to %s", to_name,
432 (void)printf("install: %s -> %s\n", from_name, to_name);
433 if (rename(tempfile, to_name) < 0) {
437 err(EX_OSERR, "rename: %s to %s",
441 /* Re-open to_fd so we aren't hosed by the rename(2). */
443 if ((to_fd = open(to_name, O_RDONLY, 0)) < 0)
444 err(EX_OSERR, "%s", to_name);
448 * Preserve the timestamp of the source file if necessary.
450 if (dopreserve && !files_match && !devnull) {
451 tvb[0].tv_sec = from_sb.st_atime;
453 tvb[1].tv_sec = from_sb.st_mtime;
455 (void)utimes(to_name, tvb);
458 if (fstat(to_fd, &to_sb) == -1) {
460 (void)unlink(to_name);
462 err(EX_OSERR, "%s", to_name);
466 * Set owner, group, mode for target; do the chown first,
467 * chown may lose the setuid bits.
469 if ((gid != (gid_t)-1 && gid != to_sb.st_gid) ||
470 (uid != (uid_t)-1 && uid != to_sb.st_uid) ||
471 (mode != (to_sb.st_mode & ALLPERMS))) {
472 /* Try to turn off the immutable bits. */
473 if (to_sb.st_flags & NOCHANGEBITS)
474 (void)fchflags(to_fd, to_sb.st_flags & ~NOCHANGEBITS);
477 if ((gid != (gid_t)-1 && gid != to_sb.st_gid) ||
478 (uid != (uid_t)-1 && uid != to_sb.st_uid))
479 if (fchown(to_fd, uid, gid) == -1) {
481 (void)unlink(to_name);
483 err(EX_OSERR,"%s: chown/chgrp", to_name);
486 if (mode != (to_sb.st_mode & ALLPERMS))
487 if (fchmod(to_fd, mode)) {
489 (void)unlink(to_name);
491 err(EX_OSERR, "%s: chmod", to_name);
495 * If provided a set of flags, set them, otherwise, preserve the
496 * flags, except for the dump flag.
497 * NFS does not support flags. Ignore EOPNOTSUPP flags if we're just
498 * trying to turn off UF_NODUMP. If we're trying to set real flags,
499 * then warn if the the fs doesn't support it, otherwise fail.
501 if (!devnull && (flags & SETFLAGS ||
502 (from_sb.st_flags & ~UF_NODUMP) != to_sb.st_flags) &&
504 flags & SETFLAGS ? fset : from_sb.st_flags & ~UF_NODUMP)) {
505 if (flags & SETFLAGS) {
506 if (errno == EOPNOTSUPP)
507 warn("%s: chflags", to_name);
510 (void)unlink(to_name);
512 err(EX_OSERR, "%s: chflags", to_name);
519 (void)close(from_fd);
524 * compare two files; non-zero means files differ
527 compare(int from_fd, const char *from_name __unused, size_t from_len,
528 int to_fd, const char *to_name __unused, size_t to_len)
535 if (from_len != to_len)
538 if (from_len <= MAX_CMP_SIZE) {
540 if (trymmap(from_fd) && trymmap(to_fd)) {
541 p = mmap(NULL, from_len, PROT_READ, MAP_SHARED, from_fd, (off_t)0);
542 if (p == (char *)MAP_FAILED)
544 q = mmap(NULL, from_len, PROT_READ, MAP_SHARED, to_fd, (off_t)0);
545 if (q == (char *)MAP_FAILED) {
550 rv = memcmp(p, q, from_len);
562 lseek(from_fd, 0, SEEK_SET);
563 lseek(to_fd, 0, SEEK_SET);
565 n1 = read(from_fd, buf1, sizeof(buf1));
569 n2 = read(to_fd, buf2, n1);
571 rv = memcmp(buf1, buf2, n1);
573 rv = 1; /* out of sync */
575 rv = 1; /* read failure */
577 lseek(from_fd, 0, SEEK_SET);
578 lseek(to_fd, 0, SEEK_SET);
581 rv = 1; /* don't bother in this case */
588 * create a temporary file based on path and open it
591 create_tempfile(const char *path, char *temp, size_t tsize)
595 (void)strncpy(temp, path, tsize);
596 temp[tsize - 1] = '\0';
597 if ((p = strrchr(temp, '/')) != NULL)
601 (void)strncpy(p, "INS@XXXX", &temp[tsize - 1] - p);
602 temp[tsize - 1] = '\0';
603 return (mkstemp(temp));
608 * create a new file, overwriting an existing one if necessary
611 create_newfile(const char *path, int target, struct stat *sbp)
613 char backup[MAXPATHLEN];
619 * Unlink now... avoid ETXTBSY errors later. Try to turn
620 * off the append/immutable bits -- if we fail, go ahead,
623 if (sbp->st_flags & NOCHANGEBITS)
624 (void)chflags(path, sbp->st_flags & ~NOCHANGEBITS);
627 if ((size_t)snprintf(backup, MAXPATHLEN, "%s%s",
628 path, suffix) != strlen(path) + strlen(suffix))
629 errx(EX_OSERR, "%s: backup filename too long",
631 (void)snprintf(backup, MAXPATHLEN, "%s%s",
634 (void)printf("install: %s -> %s\n",
636 if (rename(path, backup) < 0)
637 err(EX_OSERR, "rename: %s to %s", path, backup);
639 if (unlink(path) < 0)
643 newfd = open(path, O_CREAT | O_RDWR | O_TRUNC, S_IRUSR | S_IWUSR);
644 if (newfd < 0 && saved_errno != 0)
651 * copy from one file to another
654 copy(int from_fd, const char *from_name, int to_fd, const char *to_name,
659 char *p, buf[MAXBSIZE];
662 /* Rewind file descriptors. */
663 if (lseek(from_fd, (off_t)0, SEEK_SET) == (off_t)-1)
664 err(EX_OSERR, "lseek: %s", from_name);
665 if (lseek(to_fd, (off_t)0, SEEK_SET) == (off_t)-1)
666 err(EX_OSERR, "lseek: %s", to_name);
669 * Mmap and write if less than 8M (the limit is so we don't totally
670 * trash memory on big files. This is really a minor hack, but it
671 * wins some CPU back.
674 if (size <= 8 * 1048576 && trymmap(from_fd) &&
675 (p = mmap(NULL, (size_t)size, PROT_READ, MAP_SHARED,
676 from_fd, (off_t)0)) != (char *)MAP_FAILED) {
677 if ((nw = write(to_fd, p, size)) != size) {
679 (void)unlink(to_name);
680 errno = nw > 0 ? EIO : serrno;
681 err(EX_OSERR, "%s", to_name);
686 while ((nr = read(from_fd, buf, sizeof(buf))) > 0)
687 if ((nw = write(to_fd, buf, nr)) != nr) {
689 (void)unlink(to_name);
690 errno = nw > 0 ? EIO : serrno;
691 err(EX_OSERR, "%s", to_name);
695 (void)unlink(to_name);
697 err(EX_OSERR, "%s", from_name);
704 * use strip(1) to strip the target file
707 strip(const char *to_name)
709 const char *stripbin;
715 (void)unlink(to_name);
717 err(EX_TEMPFAIL, "fork");
719 stripbin = getenv("STRIPBIN");
720 if (stripbin == NULL)
722 execlp(stripbin, stripbin, to_name, (char *)NULL);
723 err(EX_OSERR, "exec(%s)", stripbin);
725 if (wait(&status) == -1 || status) {
727 (void)unlink(to_name);
728 errc(EX_SOFTWARE, serrno, "wait");
736 * build directory hierarchy
739 install_dir(char *path)
746 if (!*p || (p != path && *p == '/')) {
749 if (stat(path, &sb)) {
750 if (errno != ENOENT || mkdir(path, 0755) < 0) {
751 err(EX_OSERR, "mkdir %s", path);
754 (void)printf("install: mkdir %s\n",
756 } else if (!S_ISDIR(sb.st_mode))
757 errx(EX_OSERR, "%s exists but is not a directory", path);
762 if ((gid != (gid_t)-1 || uid != (uid_t)-1) && chown(path, uid, gid))
763 warn("chown %u:%u %s", uid, gid, path);
764 if (chmod(path, mode))
765 warn("chmod %o %s", mode, path);
770 * print a usage message and die
775 (void)fprintf(stderr,
776 "usage: install [-bCcpSsv] [-B suffix] [-f flags] [-g group] [-m mode]\n"
777 " [-o owner] file1 file2\n"
778 " install [-bCcpSsv] [-B suffix] [-f flags] [-g group] [-m mode]\n"
779 " [-o owner] file1 ... fileN directory\n"
780 " install -d [-v] [-g group] [-m mode] [-o owner] directory ...\n");
787 * return true (1) if mmap should be tried, false (0) if not.
793 * The ifdef is for bootstrapping - f_fstypename doesn't exist in
794 * pre-Lite2-merge systems.
799 if (nommap || fstatfs(fd, &stfs) != 0)
801 if (strcmp(stfs.f_fstypename, "ufs") == 0 ||
802 strcmp(stfs.f_fstypename, "cd9660") == 0)