1 /* $NetBSD: findcc.c,v 1.2 2003/10/27 00:12:43 lukem 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #if HAVE_NBTOOL_CONFIG_H 40 #include "nbtool_config.h" 41 #endif 42 43 #include <sys/cdefs.h> 44 #if !defined(lint) 45 __COPYRIGHT("@(#) Copyright (c) 1999 The NetBSD Foundation, Inc.\n\ 46 All rights reserved.\n"); 47 __RCSID("$NetBSD: findcc.c,v 1.2 2003/10/27 00:12:43 lukem Exp $"); 48 #endif /* not lint */ 49 50 #include <sys/param.h> 51 #include <stdio.h> 52 #include <stdlib.h> 53 #include <string.h> 54 #include <unistd.h> 55 56 #include "findcc.h" 57 58 char * 59 findcc(progname) 60 const char *progname; 61 { 62 char *path, *dir, *next; 63 char buffer[MAXPATHLEN]; 64 65 if ((next = strchr(progname, ' ')) != NULL) { 66 *next = '\0'; 67 } 68 69 if (strchr(progname, '/') != NULL) 70 return access(progname, X_OK) ? NULL : strdup(progname); 71 72 if (((path = getenv("PATH")) == NULL) || 73 ((path = strdup(path)) == NULL)) 74 return NULL; 75 76 dir = path; 77 while (dir != NULL) { 78 if ((next = strchr(dir, ':')) != NULL) 79 *next++ = '\0'; 80 81 if (snprintf(buffer, sizeof(buffer), 82 "%s/%s", dir, progname) < sizeof(buffer)) { 83 if (!access(buffer, X_OK)) { 84 free(path); 85 return strdup(buffer); 86 } 87 } 88 dir = next; 89 } 90 91 free(path); 92 return NULL; 93 } 94 95