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/* Copyright (C) 1991, 1993, 1994 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
#include <stdio.h>
#include <string.h>
#include <errno.h>
extern char *itoa(int);
/* Return a string descibing the errno code in ERRNUM.
The storage is good only until the next call to strerror.
Writing to the storage causes undefined behavior. */
char *strerror(int err)
{
static char retbuf[80];
if (sys_nerr) {
if (err < 0 || err >= sys_nerr)
goto unknown;
strcpy(retbuf, sys_errlist[err]);
return retbuf;
}
if (err <= 0)
goto unknown;
unknown:
strcpy(retbuf, "Unknown Error: errno=");
strcat(retbuf, (char *) itoa(err));
return retbuf;
}
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