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>
69 #include "pathnames.h"
71 /* Bootstrap aid - this doesn't exist in most older releases */
73 #define MAP_FAILED ((void *)-1) /* from <sys/mman.h> */
76 #define MAX_CMP_SIZE (16 * 1024 * 1024)
78 #define DIRECTORY 0x01 /* Tell install it's a directory. */
79 #define SETFLAGS 0x02 /* Tell install to set flags. */
80 #define NOCHANGEBITS (UF_IMMUTABLE | UF_APPEND | SF_IMMUTABLE | SF_APPEND)
81 #define BACKUP_SUFFIX ".old"
87 int dobackup, docompare, dodir, dopreserve, dostrip, nommap, safecopy, verbose;
88 mode_t mode = S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH;
89 const char *suffix = BACKUP_SUFFIX;
91 void copy(int, const char *, int, const char *, off_t);
92 int compare(int, const char *, size_t, int, const char *, size_t);
93 int create_newfile(const char *, int, struct stat *);
94 int create_tempfile(const char *, char *, size_t);
95 void install(const char *, const char *, u_long, u_int);
96 void install_dir(char *);
97 u_long numeric_id(const char *, const char *);
98 void strip(const char *);
103 main(int argc, char *argv[])
105 struct stat from_sb, to_sb;
111 const char *group, *owner, *to_name;
114 group = owner = NULL;
115 while ((ch = getopt(argc, argv, "B:bCcdf:g:Mm:o:pSsv")) != -1)
127 /* For backwards compatibility. */
134 if (strtofflags(&flags, &fset, NULL))
135 errx(EX_USAGE, "%s: invalid flag", flags);
145 if (!(set = setmode(optarg)))
146 errx(EX_USAGE, "invalid file mode: %s",
148 mode = getmode(set, 0);
155 docompare = dopreserve = 1;
173 /* some options make no sense when creating directories */
174 if (dostrip && dodir)
177 /* must have at least two arguments, except when creating directories */
178 if (argc < 2 && !dodir)
181 /* need to make a temp copy so we can compare stripped version */
182 if (docompare && dostrip)
185 /* get group and owner id's */
187 if ((gp = getgrnam(group)) != NULL)
190 gid = (gid_t)numeric_id(group, "group");
195 if ((pp = getpwnam(owner)) != NULL)
198 uid = (uid_t)numeric_id(owner, "user");
203 for (; *argv != NULL; ++argv)
209 no_target = stat(to_name = argv[argc - 1], &to_sb);
210 if (!no_target && S_ISDIR(to_sb.st_mode)) {
211 for (; *argv != to_name; ++argv)
212 install(*argv, to_name, fset, iflags | DIRECTORY);
217 /* can't do file1 file2 directory/file */
222 if (stat(*argv, &from_sb))
223 err(EX_OSERR, "%s", *argv);
224 if (!S_ISREG(to_sb.st_mode)) {
226 err(EX_OSERR, "%s", to_name);
228 if (to_sb.st_dev == from_sb.st_dev &&
229 to_sb.st_ino == from_sb.st_ino)
231 "%s and %s are the same file", *argv, to_name);
233 install(*argv, to_name, fset, iflags);
239 numeric_id(const char *name, const char *type)
246 * We know that uid_t's and gid_t's are unsigned longs.
249 val = strtoul(name, &ep, 10);
251 err(EX_NOUSER, "%s", name);
253 errx(EX_NOUSER, "unknown %s %s", type, name);
259 * build a path name and install the file
262 install(const char *from_name, const char *to_name, u_long fset, u_int flags)
264 struct stat from_sb, temp_sb, to_sb;
266 int devnull, files_match, from_fd, serrno, target;
267 int tempcopy, temp_fd, to_fd;
268 char backup[MAXPATHLEN], *p, pathbuf[MAXPATHLEN], tempfile[MAXPATHLEN];
272 /* If try to install NULL file to a directory, fails. */
273 if (flags & DIRECTORY || strcmp(from_name, _PATH_DEVNULL)) {
274 if (stat(from_name, &from_sb))
275 err(EX_OSERR, "%s", from_name);
276 if (!S_ISREG(from_sb.st_mode)) {
278 err(EX_OSERR, "%s", from_name);
280 /* Build the target path. */
281 if (flags & DIRECTORY) {
282 (void)snprintf(pathbuf, sizeof(pathbuf), "%s/%s",
284 (p = strrchr(from_name, '/')) ? ++p : from_name);
292 target = stat(to_name, &to_sb) == 0;
294 /* Only install to regular files. */
295 if (target && !S_ISREG(to_sb.st_mode)) {
301 /* Only copy safe if the target exists. */
302 tempcopy = safecopy && target;
304 if (!devnull && (from_fd = open(from_name, O_RDONLY, 0)) < 0)
305 err(EX_OSERR, "%s", from_name);
307 /* If we don't strip, we can compare first. */
308 if (docompare && !dostrip && target) {
309 if ((to_fd = open(to_name, O_RDONLY, 0)) < 0)
310 err(EX_OSERR, "%s", to_name);
312 files_match = to_sb.st_size == 0;
314 files_match = !(compare(from_fd, from_name,
315 (size_t)from_sb.st_size, to_fd,
316 to_name, (size_t)to_sb.st_size));
318 /* Close "to" file unless we match. */
325 to_fd = create_tempfile(to_name, tempfile,
328 err(EX_OSERR, "%s", tempfile);
330 if ((to_fd = create_newfile(to_name, target,
332 err(EX_OSERR, "%s", to_name);
334 (void)printf("install: %s -> %s\n",
338 copy(from_fd, from_name, to_fd,
339 tempcopy ? tempfile : to_name, from_sb.st_size);
343 strip(tempcopy ? tempfile : to_name);
346 * Re-open our fd on the target, in case we used a strip
347 * that does not work in-place -- like GNU binutils strip.
350 to_fd = open(tempcopy ? tempfile : to_name, O_RDONLY, 0);
352 err(EX_OSERR, "stripping %s", to_name);
356 * Compare the stripped temp file with the target.
358 if (docompare && dostrip && target) {
361 /* Re-open to_fd using the real target name. */
362 if ((to_fd = open(to_name, O_RDONLY, 0)) < 0)
363 err(EX_OSERR, "%s", to_name);
365 if (fstat(temp_fd, &temp_sb)) {
367 (void)unlink(tempfile);
369 err(EX_OSERR, "%s", tempfile);
372 if (compare(temp_fd, tempfile, (size_t)temp_sb.st_size, to_fd,
373 to_name, (size_t)to_sb.st_size) == 0) {
375 * If target has more than one link we need to
376 * replace it in order to snap the extra links.
377 * Need to preserve target file times, though.
379 if (to_sb.st_nlink != 1) {
380 utb.actime = to_sb.st_atime;
381 utb.modtime = to_sb.st_mtime;
382 (void)utime(tempfile, &utb);
385 (void)unlink(tempfile);
387 (void) close(temp_fd);
392 * Move the new file into place if doing a safe copy
393 * and the files are different (or just not compared).
395 if (tempcopy && !files_match) {
396 /* Try to turn off the immutable bits. */
397 if (to_sb.st_flags & NOCHANGEBITS)
398 (void)chflags(to_name, to_sb.st_flags & ~NOCHANGEBITS);
400 if ((size_t)snprintf(backup, MAXPATHLEN, "%s%s", to_name,
401 suffix) != strlen(to_name) + strlen(suffix)) {
403 errx(EX_OSERR, "%s: backup filename too long",
407 (void)printf("install: %s -> %s\n", to_name, backup);
408 if (rename(to_name, backup) < 0) {
412 err(EX_OSERR, "rename: %s to %s", to_name,
417 (void)printf("install: %s -> %s\n", from_name, to_name);
418 if (rename(tempfile, to_name) < 0) {
422 err(EX_OSERR, "rename: %s to %s",
426 /* Re-open to_fd so we aren't hosed by the rename(2). */
428 if ((to_fd = open(to_name, O_RDONLY, 0)) < 0)
429 err(EX_OSERR, "%s", to_name);
433 * Preserve the timestamp of the source file if necessary.
435 if (dopreserve && !files_match && !devnull) {
436 utb.actime = from_sb.st_atime;
437 utb.modtime = from_sb.st_mtime;
438 (void)utime(to_name, &utb);
441 if (fstat(to_fd, &to_sb) == -1) {
443 (void)unlink(to_name);
445 err(EX_OSERR, "%s", to_name);
449 * Set owner, group, mode for target; do the chown first,
450 * chown may lose the setuid bits.
452 if ((gid != (gid_t)-1 && gid != to_sb.st_gid) ||
453 (uid != (uid_t)-1 && uid != to_sb.st_uid) ||
454 (mode != to_sb.st_mode)) {
455 /* Try to turn off the immutable bits. */
456 if (to_sb.st_flags & NOCHANGEBITS)
457 (void)fchflags(to_fd, to_sb.st_flags & ~NOCHANGEBITS);
460 if ((gid != (gid_t)-1 && gid != to_sb.st_gid) ||
461 (uid != (uid_t)-1 && uid != to_sb.st_uid))
462 if (fchown(to_fd, uid, gid) == -1) {
464 (void)unlink(to_name);
466 err(EX_OSERR,"%s: chown/chgrp", to_name);
469 if (mode != to_sb.st_mode)
470 if (fchmod(to_fd, mode)) {
472 (void)unlink(to_name);
474 err(EX_OSERR, "%s: chmod", to_name);
478 * If provided a set of flags, set them, otherwise, preserve the
479 * flags, except for the dump flag.
480 * NFS does not support flags. Ignore EOPNOTSUPP flags if we're just
481 * trying to turn off UF_NODUMP. If we're trying to set real flags,
482 * then warn if the the fs doesn't support it, otherwise fail.
484 if (!devnull && fchflags(to_fd,
485 flags & SETFLAGS ? fset : from_sb.st_flags & ~UF_NODUMP)) {
486 if (flags & SETFLAGS) {
487 if (errno == EOPNOTSUPP)
488 warn("%s: chflags", to_name);
491 (void)unlink(to_name);
493 err(EX_OSERR, "%s: chflags", to_name);
500 (void)close(from_fd);
505 * compare two files; non-zero means files differ
508 compare(int from_fd, const char *from_name __unused, size_t from_len,
509 int to_fd, const char *to_name __unused, size_t to_len)
516 if (from_len != to_len)
519 if (from_len <= MAX_CMP_SIZE) {
521 if (trymmap(from_fd) && trymmap(to_fd)) {
522 p = mmap(NULL, from_len, PROT_READ, MAP_SHARED, from_fd, (off_t)0);
523 if (p == (char *)MAP_FAILED)
525 q = mmap(NULL, from_len, PROT_READ, MAP_SHARED, to_fd, (off_t)0);
526 if (q == (char *)MAP_FAILED) {
531 rv = memcmp(p, q, from_len);
543 lseek(from_fd, 0, SEEK_SET);
544 lseek(to_fd, 0, SEEK_SET);
546 n1 = read(from_fd, buf1, sizeof(buf1));
550 n2 = read(to_fd, buf2, n1);
552 rv = memcmp(buf1, buf2, n1);
554 rv = 1; /* out of sync */
556 rv = 1; /* read failure */
558 lseek(from_fd, 0, SEEK_SET);
559 lseek(to_fd, 0, SEEK_SET);
562 rv = 1; /* don't bother in this case */
569 * create a temporary file based on path and open it
572 create_tempfile(const char *path, char *temp, size_t tsize)
576 (void)strncpy(temp, path, tsize);
577 temp[tsize - 1] = '\0';
578 if ((p = strrchr(temp, '/')) != NULL)
582 (void)strncpy(p, "INS@XXXX", &temp[tsize - 1] - p);
583 temp[tsize - 1] = '\0';
584 return (mkstemp(temp));
589 * create a new file, overwriting an existing one if necessary
592 create_newfile(const char *path, int target, struct stat *sbp)
594 char backup[MAXPATHLEN];
598 * Unlink now... avoid ETXTBSY errors later. Try to turn
599 * off the append/immutable bits -- if we fail, go ahead,
602 if (sbp->st_flags & NOCHANGEBITS)
603 (void)chflags(path, sbp->st_flags & ~NOCHANGEBITS);
606 if ((size_t)snprintf(backup, MAXPATHLEN, "%s%s",
607 path, suffix) != strlen(path) + strlen(suffix))
608 errx(EX_OSERR, "%s: backup filename too long",
610 (void)snprintf(backup, MAXPATHLEN, "%s%s",
613 (void)printf("install: %s -> %s\n",
615 if (rename(path, backup) < 0)
616 err(EX_OSERR, "rename: %s to %s", path, backup);
621 return (open(path, O_CREAT | O_RDWR | O_TRUNC, S_IRUSR | S_IWUSR));
626 * copy from one file to another
629 copy(int from_fd, const char *from_name, int to_fd, const char *to_name,
634 char *p, buf[MAXBSIZE];
637 /* Rewind file descriptors. */
638 if (lseek(from_fd, (off_t)0, SEEK_SET) == (off_t)-1)
639 err(EX_OSERR, "lseek: %s", from_name);
640 if (lseek(to_fd, (off_t)0, SEEK_SET) == (off_t)-1)
641 err(EX_OSERR, "lseek: %s", to_name);
644 * Mmap and write if less than 8M (the limit is so we don't totally
645 * trash memory on big files. This is really a minor hack, but it
646 * wins some CPU back.
649 if (size <= 8 * 1048576 && trymmap(from_fd) &&
650 (p = mmap(NULL, (size_t)size, PROT_READ, MAP_SHARED,
651 from_fd, (off_t)0)) != (char *)MAP_FAILED) {
652 if ((nw = write(to_fd, p, size)) != size) {
654 (void)unlink(to_name);
655 errno = nw > 0 ? EIO : serrno;
656 err(EX_OSERR, "%s", to_name);
661 while ((nr = read(from_fd, buf, sizeof(buf))) > 0)
662 if ((nw = write(to_fd, buf, nr)) != nr) {
664 (void)unlink(to_name);
665 errno = nw > 0 ? EIO : serrno;
666 err(EX_OSERR, "%s", to_name);
670 (void)unlink(to_name);
672 err(EX_OSERR, "%s", from_name);
679 * use strip(1) to strip the target file
682 strip(const char *to_name)
684 const char *stripbin;
690 (void)unlink(to_name);
692 err(EX_TEMPFAIL, "fork");
694 stripbin = getenv("STRIPBIN");
695 if (stripbin == NULL)
697 execlp(stripbin, stripbin, to_name, (char *)NULL);
698 err(EX_OSERR, "exec(%s)", stripbin);
700 if (wait(&status) == -1 || status) {
702 (void)unlink(to_name);
703 errc(EX_SOFTWARE, serrno, "wait");
711 * build directory heirarchy
714 install_dir(char *path)
721 if (!*p || (p != path && *p == '/')) {
724 if (stat(path, &sb)) {
725 if (errno != ENOENT || mkdir(path, 0755) < 0) {
726 err(EX_OSERR, "mkdir %s", path);
729 (void)printf("install: mkdir %s\n",
731 } else if (!S_ISDIR(sb.st_mode))
732 errx(EX_OSERR, "%s exists but is not a directory", path);
737 if ((gid != (gid_t)-1 || uid != (uid_t)-1) && chown(path, uid, gid))
738 warn("chown %u:%u %s", uid, gid, path);
739 if (chmod(path, mode))
740 warn("chmod %o %s", mode, path);
745 * print a usage message and die
750 (void)fprintf(stderr, "\
751 usage: install [-bCcpSsv] [-B suffix] [-f flags] [-g group] [-m mode]\n\
752 [-o owner] file1 file2\n\
753 install [-bCcpSsv] [-B suffix] [-f flags] [-g group] [-m mode]\n\
754 [-o owner] file1 ... fileN directory\n\
755 install -d [-v] [-g group] [-m mode] [-o owner] directory ...\n");
762 * return true (1) if mmap should be tried, false (0) if not.
768 * The ifdef is for bootstrapping - f_fstypename doesn't exist in
769 * pre-Lite2-merge systems.
774 if (nommap || fstatfs(fd, &stfs) != 0)
776 if (strcmp(stfs.f_fstypename, "ufs") == 0 ||
777 strcmp(stfs.f_fstypename, "cd9660") == 0)