[unix-history] / usr / src / usr.bin / xinstall / xinstall.c

/*
 * 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
static char sccsid[] = "@(#)xinstall.c	5.24 (Berkeley) 7/1/90";
#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>
#include <paths.h>
#include "pathnames.h"

static struct passwd *pp;
static struct group *gp;
static int docopy, dostrip, mode = 0755;
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;

	while ((ch = getopt(argc, argv, "cg:m:o:s")) != EOF)
		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;
		case '?':
		default:
			usage();
		}
	argc -= optind;
	argv += optind;
	if (argc < 2)
		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);
	}

	no_target = stat(to_name = argv[argc - 1], &to_sb);
	if (!no_target && (to_sb.st_mode & S_IFMT) == S_IFDIR) {
		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);
		}
		if ((to_sb.st_mode & S_IFMT) != S_IFREG) {
			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);
		}
		if ((from_sb.st_mode & S_IFMT) != S_IFREG) {
			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);
	}
}

/*
 * 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()
{
	(void)fprintf(stderr,
"usage: install [-cs] [-g group] [-m mode] [-o owner] file1 file2;\n\tor file1 ... fileN directory\n");
	exit(1);
}
Commit	Line	Data
b617dd98 WJ	1	/*
	2	* Copyright (c) 1987 Regents of the University of California.
	3	* All rights reserved.
	4	*
	5	* Redistribution and use in source and binary forms, with or without
	6	* modification, are permitted provided that the following conditions
	7	* are met:
	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.
	20	*
	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
	31	* SUCH DAMAGE.
	32	*/
	33
	34	#ifndef lint
	35	char copyright[] =
	36	"@(#) Copyright (c) 1987 Regents of the University of California.\n\
	37	All rights reserved.\n";
	38	#endif /* not lint */
	39
	40	#ifndef lint
	41	static char sccsid[] = "@(#)xinstall.c 5.24 (Berkeley) 7/1/90";
	42	#endif /* not lint */
	43
	44	#include <sys/param.h>
	45	#include <sys/stat.h>
	46	#include <sys/file.h>
	47	#include <grp.h>
	48	#include <pwd.h>
	49	#include <stdio.h>
	50	#include <ctype.h>
	51	#include <paths.h>
	52	#include "pathnames.h"
	53
	54	static struct passwd *pp;
	55	static struct group *gp;
	56	static int docopy, dostrip, mode = 0755;
	57	static char group, owner, pathbuf[MAXPATHLEN];
	58
	59	main(argc, argv)
	60	int argc;
	61	char **argv;
	62	{
	63	extern char *optarg;
	64	extern int optind;
65	struct stat from_sb, to_sb;
66	mode_t set, setmode();
67	int ch, no_target;
68	char *to_name;
69
70	while ((ch = getopt(argc, argv, "cg:m:o:s")) != EOF)
71	switch((char)ch) {
72	case 'c':
73	docopy = 1;
74	break;
75	case 'g':
76	group = optarg;
77	break;
78	case 'm':
79	if (!(set = setmode(optarg))) {
80	(void)fprintf(stderr,
81	"install: invalid file mode.\n");
82	exit(1);
83	}
84	mode = getmode(set, 0);
85	break;
86	case 'o':
87	owner = optarg;
88	break;
89	case 's':
90	dostrip = 1;
91	break;
92	case '?':
93	default:
94	usage();
95	}
96	argc -= optind;
97	argv += optind;
98	if (argc < 2)
99	usage();
100
101	/* get group and owner id's */
102	if (group && !(gp = getgrnam(group))) {
103	fprintf(stderr, "install: unknown group %s.\n", group);
104	exit(1);
105	}
106	if (owner && !(pp = getpwnam(owner))) {
107	fprintf(stderr, "install: unknown user %s.\n", owner);
108	exit(1);
109	}
110
111	no_target = stat(to_name = argv[argc - 1], &to_sb);
112	if (!no_target && (to_sb.st_mode & S_IFMT) == S_IFDIR) {
113	for (; *argv != to_name; ++argv)
114	install(*argv, to_name, 1);
115	exit(0);
116	}
117
118	/* can't do file1 file2 directory/file */
119	if (argc != 2)
120	usage();
121
122	if (!no_target) {
123	if (stat(*argv, &from_sb)) {
124	fprintf(stderr, "install: can't find %s.\n", *argv);
125	exit(1);
126	}
127	if ((to_sb.st_mode & S_IFMT) != S_IFREG) {
128	fprintf(stderr, "install: %s isn't a regular file.\n", to_name);
129	exit(1);
130	}
131	if (to_sb.st_dev == from_sb.st_dev && to_sb.st_ino == from_sb.st_ino) {
132	fprintf(stderr, "install: %s and %s are the same file.\n", *argv, to_name);
133	exit(1);
134	}
135	/* unlink now... avoid ETXTBSY errors later */
136	(void)unlink(to_name);
137	}
138	install(*argv, to_name, 0);
139	exit(0);
140	}
141
142	/*
143	* install --
144	* build a path name and install the file
145	*/
146	install(from_name, to_name, isdir)
147	char from_name, to_name;
148	int isdir;
149	{
150	struct stat from_sb;
151	int devnull, from_fd, to_fd;
152	char C, rindex();
153
154	/* if try to install NULL file to a directory, fails */
155	if (isdir \|\| strcmp(from_name, _PATH_DEVNULL)) {
156	if (stat(from_name, &from_sb)) {
157	fprintf(stderr, "install: can't find %s.\n", from_name);
158	exit(1);
159	}
160	if ((from_sb.st_mode & S_IFMT) != S_IFREG) {
161	fprintf(stderr, "install: %s isn't a regular file.\n", from_name);
162	exit(1);
163	}
164	/* build the target path */
165	if (isdir) {
166	(void)sprintf(pathbuf, "%s/%s", to_name, (C = rindex(from_name, '/')) ? ++C : from_name);
167	to_name = pathbuf;
168	}
169	devnull = 0;
170	} else
171	devnull = 1;
172
173	/* unlink now... avoid ETXTBSY errors later */
174	(void)unlink(to_name);
175
176	/* create target */
177	if ((to_fd = open(to_name, O_CREAT\|O_WRONLY\|O_TRUNC, 0600)) < 0) {
178	error(to_name);
179	exit(1);
180	}
181	if (!devnull) {
182	if ((from_fd = open(from_name, O_RDONLY, 0)) < 0) {
183	(void)unlink(to_name);
184	error(from_name);
185	exit(1);
186	}
187	copy(from_fd, from_name, to_fd, to_name);
188	(void)close(from_fd);
189	}
190	if (dostrip)
191	strip(to_name);
192	/*
193	* set owner, group, mode for target; do the chown first,
194	* chown may lose the setuid bits.
195	*/
196	if ((group \|\| owner) &&
197	fchown(to_fd, owner ? pp->pw_uid : -1, group ? gp->gr_gid : -1) \|\|
198	fchmod(to_fd, mode)) {
199	error(to_name);
200	bad(to_name);
201	}
202	(void)close(to_fd);
203	if (!docopy && !devnull && unlink(from_name)) {
204	error(from_name);
205	exit(1);
206	}
207	}
208
209	/*
210	* copy --
211	* copy from one file to another
212	*/
213	copy(from_fd, from_name, to_fd, to_name)
214	register int from_fd, to_fd;
215	char from_name, to_name;
216	{
217	register int n;
218	char buf[MAXBSIZE];
219
220	while ((n = read(from_fd, buf, sizeof(buf))) > 0)
221	if (write(to_fd, buf, n) != n) {
222	error(to_name);
223	bad(to_name);
224	}
225	if (n == -1) {
226	error(from_name);
227	bad(to_name);
228	}
229	}
230
231	/*
232	* strip --
233	* use strip(1) to strip the target file
234	*/
235	strip(to_name)
236	char *to_name;
237	{
238	int status;
239
240	switch (vfork()) {
241	case -1:
242	error("fork");
243	bad(to_name);
244	case 0:
245	execl(_PATH_STRIP, "strip", to_name, (char *)NULL);
246	error(_PATH_STRIP);
247	_exit(1);
248	default:
249	if (wait(&status) == -1 \|\| status)
250	bad(to_name);
251	}
252	}
253
254	/*
255	* error --
256	* print out an error message
257	*/
258	error(s)
259	char *s;
260	{
261	extern int errno;
262	char *strerror();
263
264	(void)fprintf(stderr, "install: %s: %s\n", s, strerror(errno));
265	}
266
267	/*
268	* bad --
269	* remove created target and die
270	*/
271	bad(fname)
272	char *fname;
273	{
274	(void)unlink(fname);
275	exit(1);
276	}
277
278	/*
279	* usage --
280	* print a usage message and die
281	*/
282	usage()
283	{
284	(void)fprintf(stderr,
285	"usage: install [-cs] [-g group] [-m mode] [-o owner] file1 file2;\n\tor file1 ... fileN directory\n");
286	exit(1);
287	}