/*-
* Copyright (c) 1988, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* Portions Copyright (c) 2005-2007 Nokia Corporation and/or its subsidiary(-ies).All rights reserved.
*/
#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)strerror.c 8.1 (Berkeley) 6/4/93";
#endif /* LIBC_SCCS and not lint */
#include <sys/cdefs.h>
#ifndef __SYMBIAN32__
__FBSDID("$FreeBSD: src/lib/libc/string/strerror.c,v 1.15 2005/02/27 21:17:22 phantom Exp $");
#endif
#if defined(NLS)
#include <nl_types.h>
#endif
#include <limits.h>
#include <errno.h>
#include <string.h>
#include <stdio.h>
#include <wchar.h>
#include <stdlib.h>
#if (defined(__SYMBIAN32__) && (defined(__WINSCW__) || defined(__WINS__)))
#include "libc_wsd_defs.h"
#endif
#ifdef __SYMBIAN32__
/* Provide the declarations for `sys_errlist' and `sys_nerr' if they
* are available on this system. Even if available, these variables
* should not be used directly. The `strerror' function provides
* all the necessary functionality.
*/
extern __const int sys_nerr;
extern __const char *__const sys_errlist[];
#endif /* __SYMBIAN32__ */
#define UPREFIX "Unknown error"
/*
* Define a buffer size big enough to describe a 64-bit signed integer
* converted to ASCII decimal (19 bytes), with an optional leading sign
* (1 byte); finally, we get the prefix, delimiter (": ") and a trailing
* NUL from UPREFIX.
*/
#define EBUFSIZE (20 + 2 + sizeof(UPREFIX))
#ifdef EMULATOR
GET_STATIC_ARRAY_FROM_TLS(ebuf, char)
#define ebuf (GET_WSD_VAR_NAME(ebuf, s)())
#endif //EMULATOR
/*
* Doing this by hand instead of linking with stdio(3) avoids bloat for
* statically linked binaries.
*/
static void
errstr(int num, char *uprefix, char *buf, size_t len)
{
char *t;
unsigned int uerr;
char tmp[EBUFSIZE];
t = tmp + sizeof(tmp);
*--t = '\0';
uerr = (num >= 0) ? num : -num;
do {
*--t = "0123456789"[uerr % 10];
} while (uerr /= 10);
if (num < 0)
*--t = '-';
*--t = ' ';
*--t = ':';
strlcpy(buf, uprefix, len);
strlcat(buf, t, len);
}
EXPORT_C
int
strerror_r(int errnum, char *strerrbuf, size_t buflen)
{
int retval = 0;
#if defined(NLS)
int saved_errno = errno;
nl_catd catd;
catd = catopen("libc", NL_CAT_LOCALE);
#endif
if (errnum < 1 || errnum >= sys_nerr) {
errstr(errnum,
#if defined(NLS)
catgets(catd, 1, 0xffff, UPREFIX),
#else
UPREFIX,
#endif
strerrbuf, buflen);
retval = EINVAL;
} else {
if (strlcpy(strerrbuf,
#if defined(NLS)
catgets(catd, 1, errnum, sys_errlist[errnum]),
#else
sys_errlist[errnum],
#endif
buflen) >= buflen)
retval = ERANGE;
}
#if defined(NLS)
catclose(catd);
errno = saved_errno;
#endif
return (retval);
}
EXPORT_C
char *
strerror(int num)
{
#ifndef EMULATOR
static char ebuf[NL_TEXTMAX];
if (strerror_r(num, ebuf, sizeof(ebuf)) != 0)
#else
if (strerror_r(num, ebuf, NL_TEXTMAX) != 0)
#endif
errno = EINVAL;
return (ebuf);
}
EXPORT_C
wchar_t *
wcserror(int num)
{
char buf[NL_TEXTMAX];
static wchar_t msgbuf[NL_TEXTMAX];
strerror_r(num, buf, sizeof(buf));
mbstowcs(msgbuf, (char*)buf, sizeof(buf)*sizeof(wchar_t));
return msgbuf;
}