whereis.c revision 99377 
1/*	$NetBSD: whereis.c,v 1.11 2002/06/11 06:06:21 itojun Exp $	*/
2/*	$FreeBSD: head/usr.bin/whereis/whereis.c 99377 2002-07-03 19:20:59Z johan $	*/
3
4/*-
5 * Copyright (c) 1993
6 *	The Regents of the University of California.  All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 *    must display the following acknowledgement:
18 *	This product includes software developed by the University of
19 *	California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 *    may be used to endorse or promote products derived from this software
22 *    without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 */
36
37#include <sys/cdefs.h>
38
39__FBSDID("$FreeBSD: head/usr.bin/whereis/whereis.c 99377 2002-07-03 19:20:59Z johan $");
40
41#if 0
42static char sccsid[] = "@(#)whereis.c	8.3 (Berkeley) 5/4/95";
43#endif
44
45#include <sys/param.h>
46#include <sys/stat.h>
47#include <sys/sysctl.h>
48
49#include <err.h>
50#include <errno.h>
51#include <stdio.h>
52#include <stdlib.h>
53#include <string.h>
54#include <unistd.h>
55
56void usage __P((void));
57int main __P((int, char *[]));
58
59int
60main(argc, argv)
61	int argc;
62	char *argv[];
63{
64	struct stat sb;
65	size_t len;
66	int ch, sverrno, mib[2];
67	char *p, *t, *std, path[MAXPATHLEN];
68
69	while ((ch = getopt(argc, argv, "")) != -1)
70		switch (ch) {
71		case '?':
72		default:
73			usage();
74		}
75	argc -= optind;
76	argv += optind;
77
78	if (argc == 0)
79		usage();
80
81	/* Retrieve the standard path. */
82	mib[0] = CTL_USER;
83	mib[1] = USER_CS_PATH;
84	if (sysctl(mib, 2, NULL, &len, NULL, 0) == -1)
85		return (-1);
86	if (len == 0)
87		err(1, "user_cs_path: sysctl: zero length");
88	if ((std = malloc(len)) == NULL)
89		err(1, NULL);
90	if (sysctl(mib, 2, std, &len, NULL, 0) == -1) {
91		sverrno = errno;
92		free(std);
93		errno = sverrno;
94		err(1, "sysctl: user_cs_path");
95	}
96
97	/* For each path, for each program... */
98	for (; *argv; ++argv)
99		for (p = std;; *p++ = ':') {
100			t = p;
101			if ((p = strchr(p, ':')) != NULL) {
102				*p = '\0';
103				if (t == p)
104					t = ".";
105			} else
106				if (strlen(t) == 0)
107					t = ".";
108			(void)snprintf(path, sizeof(path), "%s/%s", t, *argv);
109			if (!stat(path, &sb))
110				(void)printf("%s\n", path);
111			if (p == NULL)
112				break;
113		}
114
115	return (0);
116}
117
118void
119usage()
120{
121
122	(void)fprintf(stderr, "usage: whereis program ...\n");
123	exit (1);
124}
125