pub const PROT = struct {
    /// [MC2] no permissions
    pub const NONE: vm_prot_t = 0x00;
    /// [MC2] pages can be read
    pub const READ: vm_prot_t = 0x01;
    /// [MC2] pages can be written
    pub const WRITE: vm_prot_t = 0x02;
    /// [MC2] pages can be executed
    pub const EXEC: vm_prot_t = 0x04;
    /// When a caller finds that they cannot obtain write permission on a
    /// mapped entry, the following flag can be used. The entry will be
    /// made "needs copy" effectively copying the object (using COW),
    /// and write permission will be added to the maximum protections for
    /// the associated entry.
    pub const COPY: vm_prot_t = 0x10;
}