1 /* $NetBSD: findcc.c,v 1.6 2011/09/04 20:30:06 joerg Exp $ */
2
3 /*-
4 * Copyright (c) 1999 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Matthias Scheler.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #if HAVE_NBTOOL_CONFIG_H
33 #include "nbtool_config.h"
34 #endif
35
36 #include <sys/cdefs.h>
37 #if !defined(lint)
38 __COPYRIGHT("@(#) Copyright (c) 1999 The NetBSD Foundation, Inc.\
39 All rights reserved.");
40 __RCSID("$NetBSD: findcc.c,v 1.6 2011/09/04 20:30:06 joerg Exp $");
41 #endif /* not lint */
42
43 #include <sys/param.h>
44 #include <stdio.h>
45 #include <stdlib.h>
46 #include <string.h>
47 #include <unistd.h>
48
49 #include "findcc.h"
50
51 char *
findcc(const char * progname)52 findcc(const char *progname)
53 {
54 char *path, *dir, *next;
55 char buffer[MAXPATHLEN];
56
57 if ((next = strchr(progname, ' ')) != NULL) {
58 *next = '\0';
59 }
60
61 if (strchr(progname, '/') != NULL)
62 return access(progname, X_OK) ? NULL : strdup(progname);
63
64 if (((path = getenv("PATH")) == NULL) ||
65 ((path = strdup(path)) == NULL))
66 return NULL;
67
68 dir = path;
69 while (dir != NULL) {
70 if ((next = strchr(dir, ':')) != NULL)
71 *next++ = '\0';
72
73 if (snprintf(buffer, sizeof(buffer),
74 "%s/%s", dir, progname) < (int)sizeof(buffer)) {
75 if (!access(buffer, X_OK)) {
76 free(path);
77 return strdup(buffer);
78 }
79 }
80 dir = next;
81 }
82
83 free(path);
84 return NULL;
85 }
86
87