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confstr.c revision 1.2 
      1 /*
      2  * Copyright (c) 1993 Winning Strategies, Inc.
      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 Winning Strategies, Inc.
     16  * 4. The name of the author may not be used to endorse or promote products
     17  *    derived from this software withough specific prior written permission
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     20  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     21  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     22  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     23  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     24  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     28  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #if defined(LIBC_SCCS) && !defined(lint)
     32 static char *rcsid = "$Id: confstr.c,v 1.2 1993/12/22 18:52:58 jtc Exp $";
     33 #endif /* LIBC_SCCS and not lint */
     34 
     35 #include <sys/types.h>
     36 #include <unistd.h>
     37 #include <string.h>
     38 #include <errno.h>
     39 #include <paths.h>
     40 
     41 static const char *cs_path = _PATH_DEFPATH;
     42 
     43 size_t
     44 confstr(name, buf, len)
     45 	int name;
     46 	char *buf;
     47 	size_t len;
     48 {
     49 	const char *string;
     50 	size_t string_length;
     51 
     52 	switch (name) {
     53 	case _CS_PATH:
     54 		string = cs_path;
     55 		string_length = strlen(string);
     56 		break;
     57 
     58 	default:
     59 		errno = EINVAL;
     60 		return 0;
     61 	}
     62 
     63 	if (buf && len) {
     64 		strncpy(buf, string, len);
     65 		buf[len] = '\0';
     66 	}
     67 
     68 	return string_length;
     69 }
     70