# Functions

ioctl executes an ioctl command on the specified file descriptor.
Ior calculates the ioctl command for a read-ioctl of the specified type, number and size.
Iow calculates the ioctl command for a write-ioctl of the specified type, number and size.
Iowr calculates the ioctl command for a read/write-ioctl of the specified type, number and size.