syntax = "proto2";

import "lib/common.proto";

message AcornDfsProto {
	enum Flavour {
		UNDEFINED = 0;
		ACORN_DFS = 1;
	}

	optional Flavour flavour = 1 [default = ACORN_DFS, (help) = "which flavour of DFS to implement"];
}

message Brother120FsProto {
}

message FatFsProto {
}

message CpmFsProto {
	message Location {
		optional uint32 track = 1 [(help) = "track number"];
		optional uint32 side = 2 [(help) = "side number"];
		optional uint32 sector = 3 [(help) = "sector ID"];
	}

	optional Location filesystem_start = 1 [(help) = "position of the start of the filesystem"];
	optional int32 block_size = 2 [(help) = "allocation block size"];
	optional int32 dir_entries = 3 [(help) = "number of entries in the directory"];
}

message FilesystemProto {
	oneof filesystem {
		AcornDfsProto acorndfs = 1;
		Brother120FsProto brother120 = 2;
		FatFsProto fatfs = 3;
		CpmFsProto cpmfs = 4;
	}
}