NetBSD/usr.bin/xinstall/xinstall.c

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/*
* Copyright (c) 1987 Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef lint
char copyright[] =
"@(#) Copyright (c) 1987 Regents of the University of California.\n\
All rights reserved.\n";
#endif /* not lint */
#ifndef lint
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/*static char sccsid[] = "from: @(#)xinstall.c 5.24 (Berkeley) 7/1/90";*/
static char rcsid[] = "$Id: xinstall.c,v 1.3 1993/08/01 18:00:57 mycroft Exp $";
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#endif /* not lint */
#include <sys/param.h>
#include <sys/stat.h>
#include <sys/file.h>
#include <grp.h>
#include <pwd.h>
#include <stdio.h>
#include <ctype.h>
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#include <errno.h>
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#include <paths.h>
#include "pathnames.h"
static struct passwd *pp;
static struct group *gp;
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static int docopy, dostrip, dodir, mode = 0755;
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static char *group, *owner, pathbuf[MAXPATHLEN];
main(argc, argv)
int argc;
char **argv;
{
extern char *optarg;
extern int optind;
struct stat from_sb, to_sb;
mode_t *set, *setmode();
int ch, no_target;
char *to_name;
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while ((ch = getopt(argc, argv, "cg:m:o:sd")) != EOF)
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switch((char)ch) {
case 'c':
docopy = 1;
break;
case 'g':
group = optarg;
break;
case 'm':
if (!(set = setmode(optarg))) {
(void)fprintf(stderr,
"install: invalid file mode.\n");
exit(1);
}
mode = getmode(set, 0);
break;
case 'o':
owner = optarg;
break;
case 's':
dostrip = 1;
break;
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case 'd':
dodir = 1;
break;
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case '?':
default:
usage();
}
argc -= optind;
argv += optind;
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/* copy and strip options make no sense when creating directories */
if ((docopy || dostrip) && dodir)
usage();
/* must have at least two arguments, except when creating directories */
if (argc < 2 && !dodir)
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usage();
/* get group and owner id's */
if (group && !(gp = getgrnam(group))) {
fprintf(stderr, "install: unknown group %s.\n", group);
exit(1);
}
if (owner && !(pp = getpwnam(owner))) {
fprintf(stderr, "install: unknown user %s.\n", owner);
exit(1);
}
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if (dodir) {
for (; *argv != NULL; ++argv)
build(*argv);
exit (0);
/* NOTREACHED */
}
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no_target = stat(to_name = argv[argc - 1], &to_sb);
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if (!no_target && S_ISDIR(to_sb.st_mode)) {
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for (; *argv != to_name; ++argv)
install(*argv, to_name, 1);
exit(0);
}
/* can't do file1 file2 directory/file */
if (argc != 2)
usage();
if (!no_target) {
if (stat(*argv, &from_sb)) {
fprintf(stderr, "install: can't find %s.\n", *argv);
exit(1);
}
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if (!S_ISREG(to_sb.st_mode)) {
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fprintf(stderr, "install: %s isn't a regular file.\n", to_name);
exit(1);
}
if (to_sb.st_dev == from_sb.st_dev && to_sb.st_ino == from_sb.st_ino) {
fprintf(stderr, "install: %s and %s are the same file.\n", *argv, to_name);
exit(1);
}
/* unlink now... avoid ETXTBSY errors later */
(void)unlink(to_name);
}
install(*argv, to_name, 0);
exit(0);
}
/*
* install --
* build a path name and install the file
*/
install(from_name, to_name, isdir)
char *from_name, *to_name;
int isdir;
{
struct stat from_sb;
int devnull, from_fd, to_fd;
char *C, *rindex();
/* if try to install NULL file to a directory, fails */
if (isdir || strcmp(from_name, _PATH_DEVNULL)) {
if (stat(from_name, &from_sb)) {
fprintf(stderr, "install: can't find %s.\n", from_name);
exit(1);
}
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if (!S_ISREG(from_sb.st_mode)) {
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fprintf(stderr, "install: %s isn't a regular file.\n", from_name);
exit(1);
}
/* build the target path */
if (isdir) {
(void)sprintf(pathbuf, "%s/%s", to_name, (C = rindex(from_name, '/')) ? ++C : from_name);
to_name = pathbuf;
}
devnull = 0;
} else
devnull = 1;
/* unlink now... avoid ETXTBSY errors later */
(void)unlink(to_name);
/* create target */
if ((to_fd = open(to_name, O_CREAT|O_WRONLY|O_TRUNC, 0600)) < 0) {
error(to_name);
exit(1);
}
if (!devnull) {
if ((from_fd = open(from_name, O_RDONLY, 0)) < 0) {
(void)unlink(to_name);
error(from_name);
exit(1);
}
copy(from_fd, from_name, to_fd, to_name);
(void)close(from_fd);
}
if (dostrip)
strip(to_name);
/*
* set owner, group, mode for target; do the chown first,
* chown may lose the setuid bits.
*/
if ((group || owner) &&
fchown(to_fd, owner ? pp->pw_uid : -1, group ? gp->gr_gid : -1) ||
fchmod(to_fd, mode)) {
error(to_name);
bad(to_name);
}
(void)close(to_fd);
if (!docopy && !devnull && unlink(from_name)) {
error(from_name);
exit(1);
}
}
/*
* copy --
* copy from one file to another
*/
copy(from_fd, from_name, to_fd, to_name)
register int from_fd, to_fd;
char *from_name, *to_name;
{
register int n;
char buf[MAXBSIZE];
while ((n = read(from_fd, buf, sizeof(buf))) > 0)
if (write(to_fd, buf, n) != n) {
error(to_name);
bad(to_name);
}
if (n == -1) {
error(from_name);
bad(to_name);
}
}
/*
* strip --
* use strip(1) to strip the target file
*/
strip(to_name)
char *to_name;
{
int status;
switch (vfork()) {
case -1:
error("fork");
bad(to_name);
case 0:
execl(_PATH_STRIP, "strip", to_name, (char *)NULL);
error(_PATH_STRIP);
_exit(1);
default:
if (wait(&status) == -1 || status)
bad(to_name);
}
}
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/*
* build --
* build directory heirarchy
*/
build(path)
char *path;
{
register char *p;
struct stat sb;
int create, ch;
for (create = 0, p = path;; ++p)
if (!*p || *p == '/') {
ch = *p;
*p = '\0';
if (stat(path, &sb)) {
if (errno != ENOENT || mkdir(path, 0777) < 0) {
error(path);
return(1);
}
create = 1;
}
if (!(*p = ch))
break;
}
if ((group || owner) &&
chown(path, owner ? pp->pw_uid : -1, group ? gp->gr_gid : -1) ||
chmod(path, mode)) {
error(path);
}
return(0);
}
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/*
* error --
* print out an error message
*/
error(s)
char *s;
{
extern int errno;
char *strerror();
(void)fprintf(stderr, "install: %s: %s\n", s, strerror(errno));
}
/*
* bad --
* remove created target and die
*/
bad(fname)
char *fname;
{
(void)unlink(fname);
exit(1);
}
/*
* usage --
* print a usage message and die
*/
usage()
{
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(void)fprintf(stderr, "\
usage: install [-cs] [-g group] [-m mode] [-o owner] file1 file2\n\
install [-cs] [-g group] [-m mode] [-o owner] file1 ... fileN directory\n\
install -d [-g group] [-m mode] [-o owner] directory ...\n");
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exit(1);
}