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: src/usr.bin/xinstall/xinstall.c,v 1.38.2.8 2002/08/07 16:29:48 ru Exp $");
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 *);
107 struct stat from_sb, to_sb;
113 const char *group, *owner, *to_name;
116 group = owner = NULL;
117 while ((ch = getopt(argc, argv, "B:bCcdf:g:Mm:o:pSsv")) != -1)
129 /* For backwards compatibility. */
136 if (strtofflags(&flags, &fset, NULL))
137 errx(EX_USAGE, "%s: invalid flag", flags);
147 if (!(set = setmode(optarg)))
148 errx(EX_USAGE, "invalid file mode: %s",
150 mode = getmode(set, 0);
157 docompare = dopreserve = 1;
175 /* some options make no sense when creating directories */
176 if (dostrip && dodir)
179 /* must have at least two arguments, except when creating directories */
180 if (argc < 2 && !dodir)
183 /* need to make a temp copy so we can compare stripped version */
184 if (docompare && dostrip)
187 /* get group and owner id's */
189 if ((gp = getgrnam(group)) != NULL)
192 gid = (gid_t)numeric_id(group, "group");
197 if ((pp = getpwnam(owner)) != NULL)
200 uid = (uid_t)numeric_id(owner, "user");
205 for (; *argv != NULL; ++argv)
211 no_target = stat(to_name = argv[argc - 1], &to_sb);
212 if (!no_target && S_ISDIR(to_sb.st_mode)) {
213 for (; *argv != to_name; ++argv)
214 install(*argv, to_name, fset, iflags | DIRECTORY);
219 /* can't do file1 file2 directory/file */
224 if (stat(*argv, &from_sb))
225 err(EX_OSERR, "%s", *argv);
226 if (!S_ISREG(to_sb.st_mode)) {
228 err(EX_OSERR, "%s", to_name);
230 if (to_sb.st_dev == from_sb.st_dev &&
231 to_sb.st_ino == from_sb.st_ino)
233 "%s and %s are the same file", *argv, to_name);
235 install(*argv, to_name, fset, iflags);
241 numeric_id(name, type)
242 const char *name, *type;
249 * We know that uid_t's and gid_t's are unsigned longs.
252 val = strtoul(name, &ep, 10);
254 err(EX_NOUSER, "%s", name);
256 errx(EX_NOUSER, "unknown %s %s", type, name);
262 * build a path name and install the file
265 install(from_name, to_name, fset, flags)
266 const char *from_name, *to_name;
270 struct stat from_sb, temp_sb, to_sb;
272 int devnull, files_match, from_fd, serrno, target;
273 int tempcopy, temp_fd, to_fd;
274 char backup[MAXPATHLEN], *p, pathbuf[MAXPATHLEN], tempfile[MAXPATHLEN];
278 /* If try to install NULL file to a directory, fails. */
279 if (flags & DIRECTORY || strcmp(from_name, _PATH_DEVNULL)) {
280 if (stat(from_name, &from_sb))
281 err(EX_OSERR, "%s", from_name);
282 if (!S_ISREG(from_sb.st_mode)) {
284 err(EX_OSERR, "%s", from_name);
286 /* Build the target path. */
287 if (flags & DIRECTORY) {
288 (void)snprintf(pathbuf, sizeof(pathbuf), "%s/%s",
290 (p = strrchr(from_name, '/')) ? ++p : from_name);
298 target = stat(to_name, &to_sb) == 0;
300 /* Only install to regular files. */
301 if (target && !S_ISREG(to_sb.st_mode)) {
307 /* Only copy safe if the target exists. */
308 tempcopy = safecopy && target;
310 if (!devnull && (from_fd = open(from_name, O_RDONLY, 0)) < 0)
311 err(EX_OSERR, "%s", from_name);
313 /* If we don't strip, we can compare first. */
314 if (docompare && !dostrip && target) {
315 if ((to_fd = open(to_name, O_RDONLY, 0)) < 0)
316 err(EX_OSERR, "%s", to_name);
318 files_match = to_sb.st_size == 0;
320 files_match = !(compare(from_fd, from_name,
321 (size_t)from_sb.st_size, to_fd,
322 to_name, (size_t)to_sb.st_size));
324 /* Close "to" file unless we match. */
331 to_fd = create_tempfile(to_name, tempfile,
334 err(EX_OSERR, "%s", tempfile);
336 if ((to_fd = create_newfile(to_name, target,
338 err(EX_OSERR, "%s", to_name);
340 (void)printf("install: %s -> %s\n",
344 copy(from_fd, from_name, to_fd,
345 tempcopy ? tempfile : to_name, from_sb.st_size);
349 strip(tempcopy ? tempfile : to_name);
352 * Re-open our fd on the target, in case we used a strip
353 * that does not work in-place -- like GNU binutils strip.
356 to_fd = open(tempcopy ? tempfile : to_name, O_RDONLY, 0);
358 err(EX_OSERR, "stripping %s", to_name);
362 * Compare the stripped temp file with the target.
364 if (docompare && dostrip && target) {
367 /* Re-open to_fd using the real target name. */
368 if ((to_fd = open(to_name, O_RDONLY, 0)) < 0)
369 err(EX_OSERR, "%s", to_name);
371 if (fstat(temp_fd, &temp_sb)) {
373 (void)unlink(tempfile);
375 err(EX_OSERR, "%s", tempfile);
378 if (compare(temp_fd, tempfile, (size_t)temp_sb.st_size, to_fd,
379 to_name, (size_t)to_sb.st_size) == 0) {
381 * If target has more than one link we need to
382 * replace it in order to snap the extra links.
383 * Need to preserve target file times, though.
385 if (to_sb.st_nlink != 1) {
386 utb.actime = to_sb.st_atime;
387 utb.modtime = to_sb.st_mtime;
388 (void)utime(tempfile, &utb);
391 (void)unlink(tempfile);
393 (void) close(temp_fd);
398 * Move the new file into place if doing a safe copy
399 * and the files are different (or just not compared).
401 if (tempcopy && !files_match) {
402 /* Try to turn off the immutable bits. */
403 if (to_sb.st_flags & NOCHANGEBITS)
404 (void)chflags(to_name, to_sb.st_flags & ~NOCHANGEBITS);
406 if ((size_t)snprintf(backup, MAXPATHLEN, "%s%s", to_name,
407 suffix) != strlen(to_name) + strlen(suffix)) {
409 errx(EX_OSERR, "%s: backup filename too long",
413 (void)printf("install: %s -> %s\n", to_name, backup);
414 if (rename(to_name, backup) < 0) {
418 err(EX_OSERR, "rename: %s to %s", to_name,
423 (void)printf("install: %s -> %s\n", from_name, to_name);
424 if (rename(tempfile, to_name) < 0) {
428 err(EX_OSERR, "rename: %s to %s",
432 /* Re-open to_fd so we aren't hosed by the rename(2). */
434 if ((to_fd = open(to_name, O_RDONLY, 0)) < 0)
435 err(EX_OSERR, "%s", to_name);
439 * Preserve the timestamp of the source file if necessary.
441 if (dopreserve && !files_match && !devnull) {
442 utb.actime = from_sb.st_atime;
443 utb.modtime = from_sb.st_mtime;
444 (void)utime(to_name, &utb);
447 if (fstat(to_fd, &to_sb) == -1) {
449 (void)unlink(to_name);
451 err(EX_OSERR, "%s", to_name);
455 * Set owner, group, mode for target; do the chown first,
456 * chown may lose the setuid bits.
458 if ((gid != (gid_t)-1 && gid != to_sb.st_gid) ||
459 (uid != (uid_t)-1 && uid != to_sb.st_uid) ||
460 (mode != to_sb.st_mode)) {
461 /* Try to turn off the immutable bits. */
462 if (to_sb.st_flags & NOCHANGEBITS)
463 (void)fchflags(to_fd, to_sb.st_flags & ~NOCHANGEBITS);
466 if ((gid != (gid_t)-1 && gid != to_sb.st_gid) ||
467 (uid != (uid_t)-1 && uid != to_sb.st_uid))
468 if (fchown(to_fd, uid, gid) == -1) {
470 (void)unlink(to_name);
472 err(EX_OSERR,"%s: chown/chgrp", to_name);
475 if (mode != to_sb.st_mode)
476 if (fchmod(to_fd, mode)) {
478 (void)unlink(to_name);
480 err(EX_OSERR, "%s: chmod", to_name);
484 * If provided a set of flags, set them, otherwise, preserve the
485 * flags, except for the dump flag.
486 * NFS does not support flags. Ignore EOPNOTSUPP flags if we're just
487 * trying to turn off UF_NODUMP. If we're trying to set real flags,
488 * then warn if the the fs doesn't support it, otherwise fail.
490 if (!devnull && fchflags(to_fd,
491 flags & SETFLAGS ? fset : from_sb.st_flags & ~UF_NODUMP)) {
492 if (flags & SETFLAGS) {
493 if (errno == EOPNOTSUPP)
494 warn("%s: chflags", to_name);
497 (void)unlink(to_name);
499 err(EX_OSERR, "%s: chflags", to_name);
506 (void)close(from_fd);
511 * compare two files; non-zero means files differ
514 compare(int from_fd, const char *from_name __unused, size_t from_len,
515 int to_fd, const char *to_name __unused, size_t to_len)
522 if (from_len != to_len)
525 if (from_len <= MAX_CMP_SIZE) {
527 if (trymmap(from_fd) && trymmap(to_fd)) {
528 p = mmap(NULL, from_len, PROT_READ, MAP_SHARED, from_fd, (off_t)0);
529 if (p == (char *)MAP_FAILED)
531 q = mmap(NULL, from_len, PROT_READ, MAP_SHARED, to_fd, (off_t)0);
532 if (q == (char *)MAP_FAILED) {
537 rv = memcmp(p, q, from_len);
549 lseek(from_fd, 0, SEEK_SET);
550 lseek(to_fd, 0, SEEK_SET);
552 n1 = read(from_fd, buf1, sizeof(buf1));
556 n2 = read(to_fd, buf2, n1);
558 rv = memcmp(buf1, buf2, n1);
560 rv = 1; /* out of sync */
562 rv = 1; /* read failure */
564 lseek(from_fd, 0, SEEK_SET);
565 lseek(to_fd, 0, SEEK_SET);
568 rv = 1; /* don't bother in this case */
575 * create a temporary file based on path and open it
578 create_tempfile(path, temp, tsize)
585 (void)strncpy(temp, path, tsize);
586 temp[tsize - 1] = '\0';
587 if ((p = strrchr(temp, '/')) != NULL)
591 (void)strncpy(p, "INS@XXXX", &temp[tsize - 1] - p);
592 temp[tsize - 1] = '\0';
593 return (mkstemp(temp));
598 * create a new file, overwriting an existing one if necessary
601 create_newfile(path, target, sbp)
606 char backup[MAXPATHLEN];
610 * Unlink now... avoid ETXTBSY errors later. Try to turn
611 * off the append/immutable bits -- if we fail, go ahead,
614 if (sbp->st_flags & NOCHANGEBITS)
615 (void)chflags(path, sbp->st_flags & ~NOCHANGEBITS);
618 if ((size_t)snprintf(backup, MAXPATHLEN, "%s%s",
619 path, suffix) != strlen(path) + strlen(suffix))
620 errx(EX_OSERR, "%s: backup filename too long",
622 (void)snprintf(backup, MAXPATHLEN, "%s%s",
625 (void)printf("install: %s -> %s\n",
627 if (rename(path, backup) < 0)
628 err(EX_OSERR, "rename: %s to %s", path, backup);
633 return (open(path, O_CREAT | O_RDWR | O_TRUNC, S_IRUSR | S_IWUSR));
638 * copy from one file to another
641 copy(from_fd, from_name, to_fd, to_name, size)
642 register int from_fd, to_fd;
643 const char *from_name, *to_name;
648 char *p, buf[MAXBSIZE];
651 /* Rewind file descriptors. */
652 if (lseek(from_fd, (off_t)0, SEEK_SET) == (off_t)-1)
653 err(EX_OSERR, "lseek: %s", from_name);
654 if (lseek(to_fd, (off_t)0, SEEK_SET) == (off_t)-1)
655 err(EX_OSERR, "lseek: %s", to_name);
658 * Mmap and write if less than 8M (the limit is so we don't totally
659 * trash memory on big files. This is really a minor hack, but it
660 * wins some CPU back.
663 if (size <= 8 * 1048576 && trymmap(from_fd) &&
664 (p = mmap(NULL, (size_t)size, PROT_READ, MAP_SHARED,
665 from_fd, (off_t)0)) != (char *)MAP_FAILED) {
666 if ((nw = write(to_fd, p, size)) != size) {
668 (void)unlink(to_name);
669 errno = nw > 0 ? EIO : serrno;
670 err(EX_OSERR, "%s", to_name);
675 while ((nr = read(from_fd, buf, sizeof(buf))) > 0)
676 if ((nw = write(to_fd, buf, nr)) != nr) {
678 (void)unlink(to_name);
679 errno = nw > 0 ? EIO : serrno;
680 err(EX_OSERR, "%s", to_name);
684 (void)unlink(to_name);
686 err(EX_OSERR, "%s", from_name);
693 * use strip(1) to strip the target file
699 const char *stripbin;
705 (void)unlink(to_name);
707 err(EX_TEMPFAIL, "fork");
709 stripbin = getenv("STRIPBIN");
710 if (stripbin == NULL)
712 execlp(stripbin, stripbin, to_name, (char *)NULL);
713 err(EX_OSERR, "exec(%s)", stripbin);
715 if (wait(&status) == -1 || status) {
717 (void)unlink(to_name);
718 errc(EX_SOFTWARE, serrno, "wait");
726 * build directory heirarchy
737 if (!*p || (p != path && *p == '/')) {
740 if (stat(path, &sb)) {
741 if (errno != ENOENT || mkdir(path, 0755) < 0) {
742 err(EX_OSERR, "mkdir %s", path);
745 (void)printf("install: mkdir %s\n",
747 } else if (!S_ISDIR(sb.st_mode))
748 errx(EX_OSERR, "%s exists but is not a directory", path);
753 if ((gid != (gid_t)-1 || uid != (uid_t)-1) && chown(path, uid, gid))
754 warn("chown %u:%u %s", uid, gid, path);
755 if (chmod(path, mode))
756 warn("chmod %o %s", mode, path);
761 * print a usage message and die
766 (void)fprintf(stderr, "\
767 usage: install [-bCcpSsv] [-B suffix] [-f flags] [-g group] [-m mode]\n\
768 [-o owner] file1 file2\n\
769 install [-bCcpSsv] [-B suffix] [-f flags] [-g group] [-m mode]\n\
770 [-o owner] file1 ... fileN directory\n\
771 install -d [-v] [-g group] [-m mode] [-o owner] directory ...\n");
778 * return true (1) if mmap should be tried, false (0) if not.
785 * The ifdef is for bootstrapping - f_fstypename doesn't exist in
786 * pre-Lite2-merge systems.
791 if (nommap || fstatfs(fd, &stfs) != 0)
793 if (strcmp(stfs.f_fstypename, "ufs") == 0 ||
794 strcmp(stfs.f_fstypename, "cd9660") == 0)