* 0 is returned if either there's no pidfile, it's empty
* or no pid can be read.
*/
-int read_pid (char *pidfile);
+pid_t read_pid (char *pidfile);
/* check_pid
*
* table (using /proc) to determine if the process already exists. If
* so 1 is returned, otherwise 0.
*/
-int check_pid (char *pidfile);
+pid_t check_pid (char *pidfile);
/* write_pid
*
* Writes the pid to the specified file. If that fails 0 is
* returned, otherwise the pid.
*/
-int write_pid (char *pidfile);
+pid_t write_pid (char *pidfile);
/* remove_pid
*