Workaround thread-unsafeness of cli_echo().

#ifdef USE_PTHREADS

#include <pthread.h>

static pthread_mutex_t log_mutex;

static inline void log_lock(void) { pthread_mutex_lock(&log_mutex); }

static inline void log_unlock(void) { pthread_mutex_unlock(&log_mutex); }

static pthread_t main_thread;

void main_thread_init(void) { main_thread = pthread_self(); }

static int main_thread_self(void) { return pthread_equal(pthread_self(), main_thread); }

#else

static inline void log_lock(void) {  }

static inline void log_unlock(void) {  }

void main_thread_init(void) { }

static int main_thread_self(void) { return 1; }

#endif

    }

  log_unlock();

  /* FIXME: cli_echo is not thread-safe */

  /* cli_echo is not thread-safe, so call it just from the main thread */

  if (main_thread_self())

    cli_echo(class, buf->start);

  buf->pos = buf->start;

      dup2(0, 2);

    }

  main_thread_init();

  write_pid_file();

  signal_init();

/* log.c */

void main_thread_init(void);

void log_init_debug(char *);		/* Initialize debug dump to given file (NULL=stderr, ""=off) */

void log_switch(int debug, list *l, char *); /* Use l=NULL for initial switch */