Function map 

pub fn map(
    addr_hint: *const (),
    page_count: usize,
    guard_pages_count: usize,
    resource_to_map: Option<Ri>,
    resource_off: Option<isize>,
    flags: MemMapFlags,
) -> Result<(Ri, NonNull<[u8]>), ErrorStatus>

See SyscallNum::SysMemMap and RawMemMapConfig

You don’t have to provide the MemMapFlags::MAP_RESOURCE flag, it is automatically provided if resource_to_map is Some

Returns

the resource ID of the Tracked Mapping and the slice of bytes in the mapping