1/* strerror.c --- POSIX compatible system error routine 2 3 Copyright (C) 2007 Free Software Foundation, Inc. 4 5 This program is free software: you can redistribute it and/or modify 6 it under the terms of the GNU General Public License as published by 7 the Free Software Foundation; either version 3 of the License, or 8 (at your option) any later version. 9 10 This program is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 GNU General Public License for more details. 14 15 You should have received a copy of the GNU General Public License 16 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 17 18#include <config.h> 19 20#include <string.h> 21 22#if REPLACE_STRERROR 23 24# include <stdio.h> 25 26# include "intprops.h" 27 28# undef strerror 29# if ! HAVE_DECL_STRERROR 30# define strerror(n) NULL 31# endif 32 33char * 34rpl_strerror (int n) 35{ 36 char *result = strerror (n); 37 38 if (result == NULL || result[0] == '\0') 39 { 40 static char const fmt[] = "Unknown error (%d)"; 41 static char mesg[sizeof fmt + INT_STRLEN_BOUND (n)]; 42 sprintf (mesg, fmt, n); 43 return mesg; 44 } 45 46 return result; 47} 48 49#endif 50