1 /* 2 * strerror.c --- ANSI C compatible system error routine 3 */ 4 5 /* 6 * Copyright (C) 1986, 1988, 1989, 1991 the Free Software Foundation, Inc. 7 * From gawk. 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License as published by 11 * the Free Software Foundation; either version 2, or (at your option) 12 * any later version. 13 * 14 * This program is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 * GNU General Public License for more details. 18 * 19 * You should have received a copy of the GNU General Public License 20 * along with this program; if not, write to the Free Software 21 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 22 * 23 */ 24 25 #if 0 26 #include <stdio.h> 27 #endif 28 29 extern int sys_nerr; 30 extern char *sys_errlist[]; 31 32 char * 33 strerror(n) 34 int n; 35 { 36 static char mesg[30]; 37 38 if (n < 0 || n >= sys_nerr) { 39 sprintf(mesg, "Unknown error (%d)", n); 40 return mesg; 41 } else 42 return sys_errlist[n]; 43 } 44