Function openProtocolSt [src]

Opens a protocol with a structure as the loaded image for a UEFI application

Prototype

pub fn openProtocolSt(self: *BootServices, comptime protocol: type, handle: Handle) !*protocol

Parameters

self: *BootServicesprotocol: typehandle: Handle

Source

  pub fn openProtocolSt(self: *BootServices, comptime protocol: type, handle: Handle) !*protocol {
    if (!@hasDecl(protocol, "guid"))
        @compileError("Protocol is missing guid!");

    var ptr: ?*protocol = undefined;

    try self.openProtocol(
        handle,
        &protocol.guid,
        @as(*?*anyopaque, @ptrCast(&ptr)),
        // Invoking handle (loaded image)
        uefi.handle,
        // Control handle (null as not a driver)
        null,
        uefi.tables.OpenProtocolAttributes{ .by_handle_protocol = true },
    ).err();

    return ptr.?;
}  