+ (:integer f-rdlck "F_RDLCK" nil t)
+ (:integer f-wrlck "F_WRLCK" nil t)
+ (:integer f-unlck "F_UNLCK" nil t)
+
+ (:structure alien-flock
+ ("struct flock"
+ (short type "short" "l_type")
+ (short whence "short" "l_whence")
+ (off-t start "off_t" "l_start")
+ (off-t len "off_t" "l_len")
+ (pid-t pid "pid_t" "l_pid")))