1/*- 2 * Copyright (c) 1991 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 * 7 * @(#)errfunction 8.1 (Berkeley) 06/11/93 8 */ 9 10err(s, syserr) 11 register char *s; 12 int syserr; 13{ 14 extern int errno, sys_nerr; 15 extern char *sys_errlist[]; 16 register char *e; 17 18 (void)write(2, PROGNAME, sizeof(PROGNAME) - 1); 19 if (s) { 20 for (e = s; *e; ++e); 21 (void)write(2, s, e - s); 22 } 23#define BADERR "unknown error" 24 if (syserr) { 25 if (s) 26 (void)write(2, ": ", 2); 27 if (errno > sys_nerr) 28 (void)write(2, BADERR, sizeof(BADERR) - 1); 29 else { 30 for (e = s = sys_errlist[errno]; *e; ++e); 31 (void)write(2, s, e - s); 32 } 33 } 34 (void)write(2, "\n", 1); 35 eval = 1; 36} 37