.c and /sys/class/leds/.../.../...

void gpio_write( struct Gpio const *gpio, bool brightness ); // This was in sysfs-gpio.h

char c = _gpio_read_attribute( gpio, "brightness" ); // This was in sysfs-gpio.c

// I have seen other attributes to change but I am not sure of their errors or the prone of errors w/ these methods...