11573Srgrimes/*- 21573Srgrimes * Copyright (c) 1993 31573Srgrimes * The Regents of the University of California. All rights reserved. 41573Srgrimes * 51573Srgrimes * Redistribution and use in source and binary forms, with or without 61573Srgrimes * modification, are permitted provided that the following conditions 71573Srgrimes * are met: 81573Srgrimes * 1. Redistributions of source code must retain the above copyright 91573Srgrimes * notice, this list of conditions and the following disclaimer. 101573Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 111573Srgrimes * notice, this list of conditions and the following disclaimer in the 121573Srgrimes * documentation and/or other materials provided with the distribution. 131573Srgrimes * 4. Neither the name of the University nor the names of its contributors 141573Srgrimes * may be used to endorse or promote products derived from this software 151573Srgrimes * without specific prior written permission. 161573Srgrimes * 171573Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 181573Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 191573Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 201573Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 211573Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 221573Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 231573Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 241573Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 251573Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 261573Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 271573Srgrimes * SUCH DAMAGE. 281573Srgrimes */ 291573Srgrimes 301573Srgrimes#if defined(LIBC_SCCS) && !defined(lint) 311573Srgrimesstatic char sccsid[] = "@(#)confstr.c 8.1 (Berkeley) 6/4/93"; 321573Srgrimes#endif /* LIBC_SCCS and not lint */ 3392986Sobrien#include <sys/cdefs.h> 3492986Sobrien__FBSDID("$FreeBSD$"); 351573Srgrimes 361573Srgrimes#include <sys/param.h> 37114443Snectar 381573Srgrimes#include <errno.h> 39100149Swollman#include <limits.h> 401573Srgrimes#include <paths.h> 41100149Swollman#include <string.h> 421573Srgrimes#include <unistd.h> 431573Srgrimes 44100149Swollman 451573Srgrimessize_t 46100146Swollmanconfstr(int name, char *buf, size_t len) 471573Srgrimes{ 48100146Swollman const char *p; 49100149Swollman const char UPE[] = "unsupported programming environment"; 501573Srgrimes 511573Srgrimes switch (name) { 521573Srgrimes case _CS_PATH: 53100146Swollman p = _PATH_STDPATH; 54100146Swollman goto docopy; 55100146Swollman 56100149Swollman /* 57100149Swollman * POSIX/SUS ``Programming Environments'' stuff 58100149Swollman * 59100149Swollman * We don't support more than one programming environment 60100149Swollman * on any platform (yet), so we just return the empty 61100149Swollman * string for the environment we are compiled for, 62100149Swollman * and the string "unsupported programming environment" 63100149Swollman * for anything else. (The Standard says that if these 64100149Swollman * values are used on a system which does not support 65100149Swollman * this environment -- determined via sysconf() -- then 66100149Swollman * the value we return is unspecified. So, we return 67100149Swollman * something which will cause obvious breakage.) 68100149Swollman */ 69100149Swollman case _CS_POSIX_V6_ILP32_OFF32_CFLAGS: 70100149Swollman case _CS_POSIX_V6_ILP32_OFF32_LDFLAGS: 71100149Swollman case _CS_POSIX_V6_ILP32_OFF32_LIBS: 72100150Swollman case _CS_POSIX_V6_LPBIG_OFFBIG_CFLAGS: 73100150Swollman case _CS_POSIX_V6_LPBIG_OFFBIG_LDFLAGS: 74100150Swollman case _CS_POSIX_V6_LPBIG_OFFBIG_LIBS: 75100149Swollman /* 76100150Swollman * These two environments are never supported. 77100149Swollman */ 78100149Swollman p = UPE; 79100149Swollman goto docopy; 80100149Swollman 81100149Swollman case _CS_POSIX_V6_ILP32_OFFBIG_CFLAGS: 82100149Swollman case _CS_POSIX_V6_ILP32_OFFBIG_LDFLAGS: 83100149Swollman case _CS_POSIX_V6_ILP32_OFFBIG_LIBS: 84100149Swollman if (sizeof(long) * CHAR_BIT == 32 && 85100149Swollman sizeof(off_t) > sizeof(long)) 86100149Swollman p = ""; 87100149Swollman else 88100149Swollman p = UPE; 89100149Swollman goto docopy; 90100149Swollman 91100150Swollman case _CS_POSIX_V6_LP64_OFF64_CFLAGS: 92100150Swollman case _CS_POSIX_V6_LP64_OFF64_LDFLAGS: 93100150Swollman case _CS_POSIX_V6_LP64_OFF64_LIBS: 94100149Swollman if (sizeof(long) * CHAR_BIT >= 64 && 95100149Swollman sizeof(void *) * CHAR_BIT >= 64 && 96100149Swollman sizeof(int) * CHAR_BIT >= 32 && 97100149Swollman sizeof(off_t) >= sizeof(long)) 98100149Swollman p = ""; 99100149Swollman else 100100149Swollman p = UPE; 101100149Swollman goto docopy; 102100149Swollman 103100149Swollman case _CS_POSIX_V6_WIDTH_RESTRICTED_ENVS: 104103593Swollman /* XXX - should have more complete coverage */ 105100149Swollman if (sizeof(long) * CHAR_BIT >= 64) 106103593Swollman p = "_POSIX_V6_LP64_OFF64"; 107100149Swollman else 108100150Swollman p = "_POSIX_V6_ILP32_OFFBIG"; 109100149Swollman goto docopy; 110100149Swollman 111100146Swollmandocopy: 112100146Swollman if (len != 0 && buf != NULL) 113114443Snectar strlcpy(buf, p, len); 114100146Swollman return (strlen(p) + 1); 115100146Swollman 1161573Srgrimes default: 1171573Srgrimes errno = EINVAL; 1181573Srgrimes return (0); 1191573Srgrimes } 1201573Srgrimes /* NOTREACHED */ 1211573Srgrimes} 122