1/*	$NetBSD: whereis.c,v 1.8 1997/10/20 02:22:55 mrg Exp $	*/
2
3/*-
4 * Copyright (c) 1993
5 *	The Regents of the University of California.  All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 *    must display the following acknowledgement:
17 *	This product includes software developed by the University of
18 *	California, Berkeley and its contributors.
19 * 4. Neither the name of the University nor the names of its contributors
20 *    may be used to endorse or promote products derived from this software
21 *    without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 */
35
36#include <sys/cdefs.h>
37#ifndef lint
38__COPYRIGHT("@(#) Copyright (c) 1993\n\
39	The Regents of the University of California.  All rights reserved.\n");
40#endif /* not lint */
41
42#ifndef lint
43#if 0
44static char sccsid[] = "@(#)whereis.c	8.3 (Berkeley) 5/4/95";
45#endif
46__RCSID("$NetBSD: whereis.c,v 1.8 1997/10/20 02:22:55 mrg Exp $");
47#endif /* not lint */
48
49#include <sys/param.h>
50#include <sys/stat.h>
51#include <sys/sysctl.h>
52
53#include <err.h>
54#include <errno.h>
55#include <stdio.h>
56#include <stdlib.h>
57#include <string.h>
58#include <unistd.h>
59
60void usage __P((void));
61int main __P((int, char *[]));
62
63int
64main(argc, argv)
65	int argc;
66	char *argv[];
67{
68	struct stat sb;
69	size_t len;
70	int ch, sverrno, mib[2];
71	char *p, *t, *std, path[MAXPATHLEN];
72
73	while ((ch = getopt(argc, argv, "")) != -1)
74		switch (ch) {
75		case '?':
76		default:
77			usage();
78		}
79	argc -= optind;
80	argv += optind;
81
82	if (argc == 0)
83		usage();
84
85	/* Retrieve the standard path. */
86	mib[0] = CTL_USER;
87	mib[1] = USER_CS_PATH;
88	if (sysctl(mib, 2, NULL, &len, NULL, 0) == -1)
89		return (-1);
90	if (len == 0)
91		err(1, "user_cs_path: sysctl: zero length\n");
92	if ((std = malloc(len)) == NULL)
93		err(1, "%s", "");
94	if (sysctl(mib, 2, std, &len, NULL, 0) == -1) {
95		sverrno = errno;
96		free(std);
97		errno = sverrno;
98		err(1, "sysctl: user_cs_path");
99	}
100
101	/* For each path, for each program... */
102	for (; *argv; ++argv)
103		for (p = std;; *p++ = ':') {
104			t = p;
105			if ((p = strchr(p, ':')) != NULL) {
106				*p = '\0';
107				if (t == p)
108					t = ".";
109			} else
110				if (strlen(t) == 0)
111					t = ".";
112			(void)snprintf(path, sizeof(path), "%s/%s", t, *argv);
113			if (!stat(path, &sb))
114				(void)printf("%s\n", path);
115			if (p == NULL)
116				break;
117		}
118
119	return (0);
120}
121
122void
123usage()
124{
125
126	(void)fprintf(stderr, "usage: whereis program [...]\n");
127	exit (1);
128}
129