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 * 4. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 static const char copyright[] =
32 "@(#) Copyright (c) 1987, 1993\n\
33 The Regents of the University of California. All rights reserved.\n";
38 static char sccsid[] = "@(#)xinstall.c 8.1 (Berkeley) 7/21/93";
42 #include <sys/cdefs.h>
43 __FBSDID("$FreeBSD$");
45 #include <sys/param.h>
47 #include <sys/mount.h>
65 /* Bootstrap aid - this doesn't exist in most older releases */
67 #define MAP_FAILED ((void *)-1) /* from <sys/mman.h> */
70 #define MAX_CMP_SIZE (16 * 1024 * 1024)
72 #define DIRECTORY 0x01 /* Tell install it's a directory. */
73 #define SETFLAGS 0x02 /* Tell install to set flags. */
74 #define NOCHANGEBITS (UF_IMMUTABLE | UF_APPEND | SF_IMMUTABLE | SF_APPEND)
75 #define BACKUP_SUFFIX ".old"
81 int dobackup, docompare, dodir, dopreserve, dostrip, nommap, safecopy, verbose;
82 mode_t mode = S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH;
83 const char *suffix = BACKUP_SUFFIX;
85 static int compare(int, const char *, size_t, int, const char *, size_t);
86 static void copy(int, const char *, int, const char *, off_t);
87 static int create_newfile(const char *, int, struct stat *);
88 static int create_tempfile(const char *, char *, size_t);
89 static void install(const char *, const char *, u_long, u_int);
90 static void install_dir(char *);
91 static u_long numeric_id(const char *, const char *);
92 static void strip(const char *);
93 static int trymmap(int);
94 static void usage(void);
97 main(int argc, char *argv[])
99 struct stat from_sb, to_sb;
105 const char *group, *owner, *to_name;
108 group = owner = NULL;
109 while ((ch = getopt(argc, argv, "B:bCcdf:g:Mm:o:pSsv")) != -1)
121 /* For backwards compatibility. */
128 if (strtofflags(&flags, &fset, NULL))
129 errx(EX_USAGE, "%s: invalid flag", flags);
139 if (!(set = setmode(optarg)))
140 errx(EX_USAGE, "invalid file mode: %s",
142 mode = getmode(set, 0);
149 docompare = dopreserve = 1;
167 /* some options make no sense when creating directories */
168 if (dostrip && dodir) {
169 warnx("-d and -s may not be specified together");
173 if (getenv("DONTSTRIP") != NULL) {
174 warnx("DONTSTRIP set - will not strip installed binaries");
178 /* must have at least two arguments, except when creating directories */
179 if (argc == 0 || (argc == 1 && !dodir))
182 /* need to make a temp copy so we can compare stripped version */
183 if (docompare && dostrip)
186 /* get group and owner id's */
188 if ((gp = getgrnam(group)) != NULL)
191 gid = (gid_t)numeric_id(group, "group");
196 if ((pp = getpwnam(owner)) != NULL)
199 uid = (uid_t)numeric_id(owner, "user");
204 for (; *argv != NULL; ++argv)
210 no_target = stat(to_name = argv[argc - 1], &to_sb);
211 if (!no_target && S_ISDIR(to_sb.st_mode)) {
212 for (; *argv != to_name; ++argv)
213 install(*argv, to_name, fset, iflags | DIRECTORY);
218 /* can't do file1 file2 directory/file */
221 warnx("target directory `%s' does not exist",
224 warnx("target `%s' is not a directory",
230 if (stat(*argv, &from_sb))
231 err(EX_OSERR, "%s", *argv);
232 if (!S_ISREG(to_sb.st_mode)) {
234 err(EX_OSERR, "%s", to_name);
236 if (to_sb.st_dev == from_sb.st_dev &&
237 to_sb.st_ino == from_sb.st_ino)
239 "%s and %s are the same file", *argv, to_name);
241 install(*argv, to_name, fset, iflags);
247 numeric_id(const char *name, const char *type)
254 * We know that uid_t's and gid_t's are unsigned longs.
257 val = strtoul(name, &ep, 10);
259 err(EX_NOUSER, "%s", name);
261 errx(EX_NOUSER, "unknown %s %s", type, name);
267 * build a path name and install the file
270 install(const char *from_name, const char *to_name, u_long fset, u_int flags)
272 struct stat from_sb, temp_sb, to_sb;
273 struct timeval tvb[2];
274 int devnull, files_match, from_fd, serrno, target;
275 int tempcopy, temp_fd, to_fd;
276 char backup[MAXPATHLEN], *p, pathbuf[MAXPATHLEN], tempfile[MAXPATHLEN];
282 /* If try to install NULL file to a directory, fails. */
283 if (flags & DIRECTORY || strcmp(from_name, _PATH_DEVNULL)) {
284 if (stat(from_name, &from_sb))
285 err(EX_OSERR, "%s", from_name);
286 if (!S_ISREG(from_sb.st_mode)) {
288 err(EX_OSERR, "%s", from_name);
290 /* Build the target path. */
291 if (flags & DIRECTORY) {
292 (void)snprintf(pathbuf, sizeof(pathbuf), "%s/%s",
294 (p = strrchr(from_name, '/')) ? ++p : from_name);
302 target = stat(to_name, &to_sb) == 0;
304 /* Only install to regular files. */
305 if (target && !S_ISREG(to_sb.st_mode)) {
311 /* Only copy safe if the target exists. */
312 tempcopy = safecopy && target;
314 if (!devnull && (from_fd = open(from_name, O_RDONLY, 0)) < 0)
315 err(EX_OSERR, "%s", from_name);
317 /* If we don't strip, we can compare first. */
318 if (docompare && !dostrip && target) {
319 if ((to_fd = open(to_name, O_RDONLY, 0)) < 0)
320 err(EX_OSERR, "%s", to_name);
322 files_match = to_sb.st_size == 0;
324 files_match = !(compare(from_fd, from_name,
325 (size_t)from_sb.st_size, to_fd,
326 to_name, (size_t)to_sb.st_size));
328 /* Close "to" file unless we match. */
335 to_fd = create_tempfile(to_name, tempfile,
338 err(EX_OSERR, "%s", tempfile);
340 if ((to_fd = create_newfile(to_name, target,
342 err(EX_OSERR, "%s", to_name);
344 (void)printf("install: %s -> %s\n",
348 copy(from_fd, from_name, to_fd,
349 tempcopy ? tempfile : to_name, from_sb.st_size);
353 strip(tempcopy ? tempfile : to_name);
356 * Re-open our fd on the target, in case we used a strip
357 * that does not work in-place -- like GNU binutils strip.
360 to_fd = open(tempcopy ? tempfile : to_name, O_RDONLY, 0);
362 err(EX_OSERR, "stripping %s", to_name);
366 * Compare the stripped temp file with the target.
368 if (docompare && dostrip && target) {
371 /* Re-open to_fd using the real target name. */
372 if ((to_fd = open(to_name, O_RDONLY, 0)) < 0)
373 err(EX_OSERR, "%s", to_name);
375 if (fstat(temp_fd, &temp_sb)) {
377 (void)unlink(tempfile);
379 err(EX_OSERR, "%s", tempfile);
382 if (compare(temp_fd, tempfile, (size_t)temp_sb.st_size, to_fd,
383 to_name, (size_t)to_sb.st_size) == 0) {
385 * If target has more than one link we need to
386 * replace it in order to snap the extra links.
387 * Need to preserve target file times, though.
389 if (to_sb.st_nlink != 1) {
390 tvb[0].tv_sec = to_sb.st_atime;
392 tvb[1].tv_sec = to_sb.st_mtime;
394 (void)utimes(tempfile, tvb);
397 (void)unlink(tempfile);
399 (void) close(temp_fd);
404 * Move the new file into place if doing a safe copy
405 * and the files are different (or just not compared).
407 if (tempcopy && !files_match) {
408 /* Try to turn off the immutable bits. */
409 if (to_sb.st_flags & NOCHANGEBITS)
410 (void)chflags(to_name, to_sb.st_flags & ~NOCHANGEBITS);
412 if ((size_t)snprintf(backup, MAXPATHLEN, "%s%s", to_name,
413 suffix) != strlen(to_name) + strlen(suffix)) {
415 errx(EX_OSERR, "%s: backup filename too long",
419 (void)printf("install: %s -> %s\n", to_name, backup);
420 if (rename(to_name, backup) < 0) {
424 err(EX_OSERR, "rename: %s to %s", to_name,
429 (void)printf("install: %s -> %s\n", from_name, to_name);
430 if (rename(tempfile, to_name) < 0) {
434 err(EX_OSERR, "rename: %s to %s",
438 /* Re-open to_fd so we aren't hosed by the rename(2). */
440 if ((to_fd = open(to_name, O_RDONLY, 0)) < 0)
441 err(EX_OSERR, "%s", to_name);
445 * Preserve the timestamp of the source file if necessary.
447 if (dopreserve && !files_match && !devnull) {
448 tvb[0].tv_sec = from_sb.st_atime;
450 tvb[1].tv_sec = from_sb.st_mtime;
452 (void)utimes(to_name, tvb);
455 if (fstat(to_fd, &to_sb) == -1) {
457 (void)unlink(to_name);
459 err(EX_OSERR, "%s", to_name);
463 * Set owner, group, mode for target; do the chown first,
464 * chown may lose the setuid bits.
466 if ((gid != (gid_t)-1 && gid != to_sb.st_gid) ||
467 (uid != (uid_t)-1 && uid != to_sb.st_uid) ||
468 (mode != (to_sb.st_mode & ALLPERMS))) {
469 /* Try to turn off the immutable bits. */
470 if (to_sb.st_flags & NOCHANGEBITS)
471 (void)fchflags(to_fd, to_sb.st_flags & ~NOCHANGEBITS);
474 if ((gid != (gid_t)-1 && gid != to_sb.st_gid) ||
475 (uid != (uid_t)-1 && uid != to_sb.st_uid))
476 if (fchown(to_fd, uid, gid) == -1) {
478 (void)unlink(to_name);
480 err(EX_OSERR,"%s: chown/chgrp", to_name);
483 if (mode != (to_sb.st_mode & ALLPERMS))
484 if (fchmod(to_fd, mode)) {
486 (void)unlink(to_name);
488 err(EX_OSERR, "%s: chmod", to_name);
492 * If provided a set of flags, set them, otherwise, preserve the
493 * flags, except for the dump flag.
494 * NFS does not support flags. Ignore EOPNOTSUPP flags if we're just
495 * trying to turn off UF_NODUMP. If we're trying to set real flags,
496 * then warn if the fs doesn't support it, otherwise fail.
498 if (!devnull && (flags & SETFLAGS ||
499 (from_sb.st_flags & ~UF_NODUMP) != to_sb.st_flags) &&
501 flags & SETFLAGS ? fset : from_sb.st_flags & ~UF_NODUMP)) {
502 if (flags & SETFLAGS) {
503 if (errno == EOPNOTSUPP)
504 warn("%s: chflags", to_name);
507 (void)unlink(to_name);
509 err(EX_OSERR, "%s: chflags", to_name);
516 (void)close(from_fd);
521 * compare two files; non-zero means files differ
524 compare(int from_fd, const char *from_name __unused, size_t from_len,
525 int to_fd, const char *to_name __unused, size_t to_len)
532 if (from_len != to_len)
535 if (from_len <= MAX_CMP_SIZE) {
537 if (trymmap(from_fd) && trymmap(to_fd)) {
538 p = mmap(NULL, from_len, PROT_READ, MAP_SHARED, from_fd, (off_t)0);
539 if (p == (char *)MAP_FAILED)
541 q = mmap(NULL, from_len, PROT_READ, MAP_SHARED, to_fd, (off_t)0);
542 if (q == (char *)MAP_FAILED) {
547 rv = memcmp(p, q, from_len);
559 lseek(from_fd, 0, SEEK_SET);
560 lseek(to_fd, 0, SEEK_SET);
562 n1 = read(from_fd, buf1, sizeof(buf1));
566 n2 = read(to_fd, buf2, n1);
568 rv = memcmp(buf1, buf2, n1);
570 rv = 1; /* out of sync */
572 rv = 1; /* read failure */
574 lseek(from_fd, 0, SEEK_SET);
575 lseek(to_fd, 0, SEEK_SET);
578 rv = 1; /* don't bother in this case */
585 * create a temporary file based on path and open it
588 create_tempfile(const char *path, char *temp, size_t tsize)
592 (void)strncpy(temp, path, tsize);
593 temp[tsize - 1] = '\0';
594 if ((p = strrchr(temp, '/')) != NULL)
598 (void)strncpy(p, "INS@XXXX", &temp[tsize - 1] - p);
599 temp[tsize - 1] = '\0';
600 return (mkstemp(temp));
605 * create a new file, overwriting an existing one if necessary
608 create_newfile(const char *path, int target, struct stat *sbp)
610 char backup[MAXPATHLEN];
616 * Unlink now... avoid ETXTBSY errors later. Try to turn
617 * off the append/immutable bits -- if we fail, go ahead,
620 if (sbp->st_flags & NOCHANGEBITS)
621 (void)chflags(path, sbp->st_flags & ~NOCHANGEBITS);
624 if ((size_t)snprintf(backup, MAXPATHLEN, "%s%s",
625 path, suffix) != strlen(path) + strlen(suffix))
626 errx(EX_OSERR, "%s: backup filename too long",
628 (void)snprintf(backup, MAXPATHLEN, "%s%s",
631 (void)printf("install: %s -> %s\n",
633 if (rename(path, backup) < 0)
634 err(EX_OSERR, "rename: %s to %s", path, backup);
636 if (unlink(path) < 0)
640 newfd = open(path, O_CREAT | O_RDWR | O_TRUNC, S_IRUSR | S_IWUSR);
641 if (newfd < 0 && saved_errno != 0)
648 * copy from one file to another
651 copy(int from_fd, const char *from_name, int to_fd, const char *to_name,
656 char *p, buf[MAXBSIZE];
659 /* Rewind file descriptors. */
660 if (lseek(from_fd, (off_t)0, SEEK_SET) == (off_t)-1)
661 err(EX_OSERR, "lseek: %s", from_name);
662 if (lseek(to_fd, (off_t)0, SEEK_SET) == (off_t)-1)
663 err(EX_OSERR, "lseek: %s", to_name);
666 * Mmap and write if less than 8M (the limit is so we don't totally
667 * trash memory on big files. This is really a minor hack, but it
668 * wins some CPU back.
671 if (size <= 8 * 1048576 && trymmap(from_fd) &&
672 (p = mmap(NULL, (size_t)size, PROT_READ, MAP_SHARED,
673 from_fd, (off_t)0)) != (char *)MAP_FAILED) {
674 nw = write(to_fd, p, size);
677 (void)unlink(to_name);
680 "short write to %s: %jd bytes written, %jd bytes asked to write",
681 to_name, (uintmax_t)nw, (uintmax_t)size);
684 err(EX_OSERR, "%s", to_name);
690 while ((nr = read(from_fd, buf, sizeof(buf))) > 0)
691 if ((nw = write(to_fd, buf, nr)) != nr) {
693 (void)unlink(to_name);
696 "short write to %s: %jd bytes written, %jd bytes asked to write",
697 to_name, (uintmax_t)nw,
701 err(EX_OSERR, "%s", to_name);
706 (void)unlink(to_name);
708 err(EX_OSERR, "%s", from_name);
715 * use strip(1) to strip the target file
718 strip(const char *to_name)
720 const char *stripbin;
726 (void)unlink(to_name);
728 err(EX_TEMPFAIL, "fork");
730 stripbin = getenv("STRIPBIN");
731 if (stripbin == NULL)
733 execlp(stripbin, stripbin, to_name, (char *)NULL);
734 err(EX_OSERR, "exec(%s)", stripbin);
736 if (wait(&status) == -1 || status) {
738 (void)unlink(to_name);
739 errc(EX_SOFTWARE, serrno, "wait");
747 * build directory hierarchy
750 install_dir(char *path)
757 if (!*p || (p != path && *p == '/')) {
760 if (stat(path, &sb)) {
761 if (errno != ENOENT || mkdir(path, 0755) < 0) {
762 err(EX_OSERR, "mkdir %s", path);
765 (void)printf("install: mkdir %s\n",
767 } else if (!S_ISDIR(sb.st_mode))
768 errx(EX_OSERR, "%s exists but is not a directory", path);
773 if ((gid != (gid_t)-1 || uid != (uid_t)-1) && chown(path, uid, gid))
774 warn("chown %u:%u %s", uid, gid, path);
775 if (chmod(path, mode))
776 warn("chmod %o %s", mode, path);
781 * print a usage message and die
786 (void)fprintf(stderr,
787 "usage: install [-bCcMpSsv] [-B suffix] [-f flags] [-g group] [-m mode]\n"
788 " [-o owner] file1 file2\n"
789 " install [-bCcMpSsv] [-B suffix] [-f flags] [-g group] [-m mode]\n"
790 " [-o owner] file1 ... fileN directory\n"
791 " install -d [-v] [-g group] [-m mode] [-o owner] directory ...\n");
798 * return true (1) if mmap should be tried, false (0) if not.
804 * The ifdef is for bootstrapping - f_fstypename doesn't exist in
805 * pre-Lite2-merge systems.
810 if (nommap || fstatfs(fd, &stfs) != 0)
812 if (strcmp(stfs.f_fstypename, "ufs") == 0 ||
813 strcmp(stfs.f_fstypename, "cd9660") == 0)