1 /* 2 * Copyright (c) 1988 Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms are permitted 6 * provided that the above copyright notice and this paragraph are 7 * duplicated in all such forms and that any documentation, 8 * advertising materials, and other materials related to such 9 * distribution and use acknowledge that the software was developed 10 * by the University of California, Berkeley. The name of the 11 * University may not be used to endorse or promote products derived 12 * from this software without specific prior written permission. 13 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR 14 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED 15 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. 16 */ 17 18 #if defined(LIBC_SCCS) && !defined(lint) 19 static char sccsid[] = "@(#)strerror.c 5.1 (Berkeley) 04/09/89"; 20 #endif /* LIBC_SCCS and not lint */ 21 22 char * 23 strerror(errnum) 24 int errnum; 25 { 26 extern int sys_nerr; 27 extern char *sys_errlist[]; 28 static char ebuf[20]; 29 30 if ((unsigned int)errnum < sys_nerr) 31 return(sys_errlist[errnum]); 32 (void)sprintf(ebuf, "Unknown error: %d", errnum); 33 return(ebuf); 34 } 35