Function block_server_register_key_slot 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn block_server_register_key_slot(
    block_server: &BlockServer,
    hw_slot: u8,
    out_handle: *mut zx_handle_t,
) -> zx_status_t

Registers a hardware inline encryption key slot hw_slot with block_server, writing the client end of the minted eventpair token to out_handle.

Safety

block_server must be a valid reference. out_handle must be valid for writes, properly aligned, and not accessed concurrently or aliased by active references for the duration of the write.