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#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
static void err(int val, const char *fmt, ...) {
int sav;
va_list ap;
sav = errno;
(void)fprintf(stderr, "%s: ", "xxx");
if (fmt != NULL) {
va_start(ap, fmt);
(void)vfprintf(stderr, fmt, ap);
va_end(ap); }
(void)fprintf(stderr, ": %s\n", strerror(sav));
exit(val); }
static void errx(int val, const char *fmt, ...) {
va_list ap;
(void)fprintf(stderr, "%s: ", "xxx");
if (fmt != NULL) {
va_start(ap, fmt);
(void)vfprintf(stderr, fmt, ap);
va_end(ap); }
(void)fprintf(stderr, "\n");
exit(val); }
static void warn(const char *fmt, ...) {
int sav;
va_list ap;
sav = errno;
(void)fprintf(stderr, "%s: ", "xxx");
if (fmt != NULL) {
va_start(ap, fmt);
(void)vfprintf(stderr, fmt, ap);
va_end(ap); }
(void)fprintf(stderr, ": %s\n", strerror(sav));
return; }
static void warnx(const char *fmt, ...) {
va_list ap;
(void)fprintf(stderr, "%s: ", "xxx");
if (fmt != NULL) {
va_start(ap, fmt);
(void)vfprintf(stderr, fmt, ap);
va_end(ap); }
(void)fprintf(stderr, "\n");
return; }
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