log_open
log_open = 1;
log_open = 0;
if (!log_open)
int log_open; /* also used in log() */
if (log_open)
if ((kprintf_logging & TOCONS) == 0 || log_open)
extern int log_open;
void log_open (char const *prog, int32_t log2stderr);
log_open(SDPD, !detach);