static char *error_str(int e, char *(*error_itoa)(int), char *buf, size_t len)
{
char *str;
if(error_itoa == NULL || (str = error_itoa(e)) == NULL)
{
buf[0] = '\0';
return buf;
}
snprintf(buf, len, ": %s", str);
return buf;
}
/*
* print a diagnostic error message to stdout, unless the -n option is in use:
* then we print ERR and leave it at that. if a user wants more info than
* ERR they should run ipmp_ping without the -n flag and see what is causing
* the error to occur
*/
static void printerror(int ecode, char *(*error_itoa)(int), char *format, ...)
{
char message[512];
char *error_str = NULL;
va_list ap;
va_start(ap, format);
vsnprintf(message, sizeof(message), format, ap);
va_end(ap);
if(error_itoa != NULL)
{
error_str = error_itoa(ecode);
}
if(error_str != NULL) fprintf(stderr, "%s: %s\n", message, error_str);
else fprintf(stderr, "%s\n", message);
return;
}
