const io/fs.ModeNamedPipe

5 uses

	io/fs (current package)
		fs.go#L180: 	ModeNamedPipe                                  // p: named pipe (FIFO)
		fs.go#L189: 	ModeType = ModeDir | ModeSymlink | ModeNamedPipe | ModeSocket | ModeDevice | ModeCharDevice | ModeIrregular

	archive/zip
		struct.go#L339: 	case fs.ModeNamedPipe:
		struct.go#L372: 		mode |= fs.ModeNamedPipe

	os
		types.go#L44: 	ModeNamedPipe  = fs.ModeNamedPipe  // p: named pipe (FIFO)