1 /* $NetBSD: strerror_r.c,v 1.1 2005/07/28 16:26:29 christos Exp $ */ 2 3 /* 4 * Copyright (c) 1988 Regents of the University of California. 5 * 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. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #if defined(LIBC_SCCS) && !defined(lint) 34 #if 0 35 static char *sccsid = "@(#)strerror.c 5.6 (Berkeley) 5/4/91"; 36 #else 37 __RCSID("$NetBSD: strerror_r.c,v 1.1 2005/07/28 16:26:29 christos Exp $"); 38 #endif 39 #endif /* LIBC_SCCS and not lint */ 40 41 #include "namespace.h" 42 #ifdef NLS 43 #include <limits.h> 44 #include <nl_types.h> 45 #endif 46 47 #include <assert.h> 48 #include <errno.h> 49 #include <stdio.h> 50 #include <string.h> 51 #include "extern.h" 52 53 int 54 strerror_r(int num, char *buf, size_t buflen) 55 { 56 #define UPREFIX "Unknown error: %u" 57 unsigned int errnum = num; 58 int retval = 0; 59 size_t slen; 60 #ifdef NLS 61 int saved_errno = errno; 62 nl_catd catd; 63 catd = catopen("libc", NL_CAT_LOCALE); 64 #endif 65 _DIAGASSERT(buf != NULL); 66 67 if (errnum < (unsigned int) sys_nerr) { 68 #ifdef NLS 69 slen = strlcpy(buf, catgets(catd, 1, (int)errnum, 70 sys_errlist[errnum]), buflen); 71 #else 72 slen = strlcpy(buf, sys_errlist[errnum], buflen); 73 #endif 74 } else { 75 #ifdef NLS 76 slen = snprintf(buf, buflen, 77 catgets(catd, 1, 0xffff, UPREFIX), errnum); 78 #else 79 slen = snprintf(buf, buflen, UPREFIX, errnum); 80 #endif 81 retval = EINVAL; 82 } 83 84 if (slen >= buflen) 85 retval = ERANGE; 86 87 #ifdef NLS 88 catclose(catd); 89 errno = saved_errno; 90 #endif 91 92 return retval; 93 } 94