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	diff --git a/lib/majic/server.ex b/lib/majic/server.ex
	index c2568ae..c0925a3 100644
	--- a/lib/majic/server.ex
	+++ b/lib/majic/server.ex
	@@ -1,446 +1,446 @@
	defmodule Majic.Server do
	@moduledoc """
	Provides access to the underlying libmagic client, which performs file introspection.

	The Server needs to be supervised, since it will terminate if it receives any unexpected error.
	"""

	@behaviour :gen_statem
	alias Majic.Result
	alias Majic.Server.Data
	alias Majic.Server.Status
	import Kernel, except: [send: 2]
	@database_patterns [:default]
	@process_timeout Majic.Config.default_process_timeout()

	@typedoc """
	Represents the reference to the underlying server, as returned by `:gen_statem`.
	"""
	@type t :: :gen_statem.server_ref()

	@typedoc """
	Represents values accepted as startup options, which can be passed to `start_link/1`.

	- `:name`: If present, this will be the registered name for the underlying process.
	Note that `:gen_statem` requires `{:local, name}`, but given widespread GenServer convention,
	atoms are accepted and will be converted to `{:local, name}`.

	- `:startup_timeout`: Specifies how long the Server waits for the C program to initialise.
	However, if the underlying C program exits, then the process exits immediately.

	Can be set to `:infinity`.

	- `:process_timeout`: Specifies how long the Server waits for each request to complete.

	Can be set to `:infinity`.

	Please note that, if you have chosen a custom timeout value, you should also pass it when
	using `Majic.Server.perform/3`.

	- `:recycle_threshold`: Specifies the number of requests processed before the underlying C
	program is recycled.

	Can be set to `:infinity` if you do not wish for the program to be recycled.

	- `:database_patterns`: Specifies what magic databases to load; you can specify a list of files, or of
	Path Patterns (see `Path.wildcard/2`) or `:default` to instruct the C program to load the
	appropriate databases.

	For example, if you have had to add custom magics, then you can set this value to:

	[:default, "path/to/my/magic"]
	"""
	@type start_option ::
	{:name, atom() \| :gen_statem.server_name()}
	\| {:startup_timeout, timeout()}
	\| {:process_timeout, timeout()}
	\| {:recycle_threshold, non_neg_integer() \| :infinity}
	\| {:database_patterns, nonempty_list(:default \| Path.t())}

	@typedoc """
	Current state of the Server:

	- `:pending`: This is the initial state; the Server will attempt to start the underlying Port
	and the libmagic client, then automatically transition to either Available or Crashed.

	- `:available`: This is the default state. In this state the Server is able to accept requests
	and they will be replied in the same order.

	- `:processing`: This is the state the Server will be in if it is processing requests. In this
	state, further requests can still be lodged and they will be processed when the Server is
	available again.

	For proper concurrency, use a process pool like Poolboy, Sbroker, etc.

	- `:recycling`: This is the state the Server will be in, if its underlying C program needs to be
	recycled. This state is triggered whenever the cycle count reaches the defined value as per
	`:recycle_threshold`.

	In this state, the Server is able to accept requests, but they will not be processed until the
	underlying C server program has been started again.
	"""
	@type state :: :starting \| :processing \| :available \| :recycling

	@spec child_spec([start_option()]) :: Supervisor.child_spec()
	@spec start_link([start_option()]) :: :gen_statem.start_ret()
	@spec perform(t(), Majic.target(), timeout()) :: Majic.result()
	@spec status(t(), timeout()) :: {:ok, Status.t()} \| {:error, term()}
	@spec stop(t(), term(), timeout()) :: :ok

	@doc """
	Returns the default Child Specification for this Server for use in Supervisors.

	You can override this with `Supervisor.child_spec/2` as required.
	"""
	def child_spec(options) do
	%{
	id: __MODULE__,
	start: {__MODULE__, :start_link, [options]},
	type: :worker,
	restart: :permanent,
	shutdown: 500
	}
	end

	@doc """
	Starts a new Server.

	See `t:option/0` for further details.
	"""
	def start_link(options) do
	{name, options} = Keyword.pop(options, :name)

	case name do
	nil -> :gen_statem.start_link(__MODULE__, options, [])
	name when is_atom(name) -> :gen_statem.start_link({:local, name}, __MODULE__, options, [])
	{:global, _} -> :gen_statem.start_link(name, __MODULE__, options, [])
	{:via, _, _} -> :gen_statem.start_link(name, __MODULE__, options, [])
	{:local, _} -> :gen_statem.start_link(name, __MODULE__, options, [])
	end
	end

	@doc """
	Determines the type of the file provided.
	"""
	def perform(server_ref, path, timeout \\ @process_timeout) do
	case :gen_statem.call(server_ref, {:perform, path}, timeout) do
	{:ok, %Result{} = result} -> {:ok, result}
	{:error, reason} -> {:error, reason}
	end
	end

	@doc """
	Reloads a Server with a new set of databases.
	"""
	def reload(server_ref, database_patterns \\ nil, timeout \\ @process_timeout) do
	:gen_statem.call(server_ref, {:reload, database_patterns}, timeout)
	end

	@doc """
	Same as `reload/2,3` but with a full restart of the underlying C port.
	"""
	def recycle(server_ref, database_patterns \\ nil, timeout \\ @process_timeout) do
	:gen_statem.call(server_ref, {:recycle, database_patterns}, timeout)
	end

	@doc """
	Returns status of the Server.
	"""
	def status(server_ref, timeout \\ @process_timeout) do
	:gen_statem.call(server_ref, :status, timeout)
	end

	@doc """
	Stops the Server with reason `:normal` and timeout `:infinity`.
	"""
	def stop(server_ref) do
	:gen_statem.stop(server_ref)
	end

	@doc """
	Stops the Server with the specified reason and timeout.
	"""
	def stop(server_ref, reason, timeout) do
	:gen_statem.stop(server_ref, reason, timeout)
	end

	@impl :gen_statem
	def init(options) do
	import Majic.Config

	data = %Data{
	port_name: get_port_name(),
	database_patterns: Keyword.get(options, :database_patterns),
	port_options: get_port_options(options),
	startup_timeout: get_startup_timeout(options),
	process_timeout: get_process_timeout(options),
	recycle_threshold: get_recycle_threshold(options)
	}

	{:ok, :starting, data}
	end

	@impl :gen_statem
	def callback_mode do
	[:state_functions, :state_enter]
	end

	@doc false
	def starting(:enter, _, %{port: nil} = data) do
	port = Port.open(data.port_name, data.port_options)
	{:keep_state, %{data \| port: port}, data.startup_timeout}
	end

	@doc false
	def starting(:enter, _, data) do
	{:keep_state_and_data, data.startup_timeout}
	end

	@doc false
	def starting({:call, from}, :status, data) do
	handle_status_call(from, :starting, data)
	end

	@doc false
	def starting({:call, _from}, {:perform, _path}, _data) do
	{:keep_state_and_data, :postpone}
	end

	@doc false
	def starting(:info, {port, {:data, ready}}, %{port: port} = data) do
	case :erlang.binary_to_term(ready) do
	:ready -> {:next_state, :loading, data}
	end
	end

	@doc false
	def starting(:info, {port, {:exit_status, code}}, %{port: port} = data) do
	error =
	case code do
	1 -> :bad_db
	2 -> :ei_error
	3 -> :ei_bad_term
	4 -> :magic_error
	code -> {:unexpected_error, code}
	end

	{:stop, {:error, error}, data}
	end

	@doc false
	def loading(:enter, _old_state, data) do
	databases =
	Enum.flat_map(List.wrap(data.database_patterns \|\| @database_patterns), fn
	:default -> [:default]
	pattern -> Path.wildcard(pattern)
	end)

	if databases == [] do
	{:stop, {:error, :no_databases_to_load}, data}
	else
	{:keep_state, {databases, data}, {:state_timeout, 0, :load}}
	end
	end

	@doc false
	def loading(:state_timeout, :load_timeout, {[database \| _], data}) do
	{:stop, {:error, {:database_loading_timeout, database}}, data}
	end

	@doc false
	def loading(:state_timeout, :load, {[], data}) do
	{:next_state, :available, data}
	end

	@doc false
	def loading(:state_timeout, :load, {[database \| _databases], data} = state) do
	command =
	case database do
	:default -> {:add_default_database, nil}
	path -> {:add_database, path}
	end

	send(data.port, command)
	{:keep_state, state, {:state_timeout, data.startup_timeout, :load_timeout}}
	end

	@doc false
	def loading(:info, {port, {:data, response}}, {[database \| databases], %{port: port} = data}) do
	case :erlang.binary_to_term(response) do
	{:ok, :loaded} ->
	{:keep_state, {databases, data}, {:state_timeout, 0, :load}}

	{:error, :not_loaded} ->
	{:stop, {:error, {:database_load_failed, database}}, data}
	end
	end

	@doc false
	def loading({:call, from}, :status, {_, data}) do
	handle_status_call(from, :loading, data)
	end

	@doc false
	def loading({:call, _from}, {:perform, _path}, _data) do
	{:keep_state_and_data, :postpone}
	end

	@doc false
	def available(:enter, _old_state, %{request: {:reload, from, _}}) do
	response = {:reply, from, :ok}
	{:keep_state_and_data, response}
	end

	@doc false
	def available(:enter, _old_state, %{request: nil}) do
	:keep_state_and_data
	end

	@doc false
	def available({:call, from}, {:perform, path}, data) do
	data = %{data \| cycles: data.cycles + 1, request: {path, from, :erlang.now()}}

	arg =
	case path do
	path when is_binary(path) -> {:file, path}
	# Truncate to 50 bytes
	- {:bytes, <<bytes::size(50), _::binary>>} -> {:bytes, bytes}
	+ {:bytes, <<bytes::binary-size(50), _::binary>>} -> {:bytes, bytes}
	{:bytes, bytes} -> {:bytes, bytes}
	end

	send(data.port, arg)
	{:next_state, :processing, data}
	end

	@doc false
	def available({:call, from}, {:reload, databases}, data) do
	send(data.port, {:reload, :reload})

	{:next_state, :starting,
	%{
	data
	\| database_patterns: databases \|\| data.database_patterns,
	request: {:reload, from, :reload}
	}}
	end

	@doc false
	def available({:call, from}, {:recycle, databases}, data) do
	{:next_state, :recycling,
	%{
	data
	\| database_patterns: databases \|\| data.database_patterns,
	request: {:reload, from, :recycle}
	}}
	end

	@doc false
	def available({:call, from}, :status, data) do
	handle_status_call(from, :available, data)
	end

	@doc false
	def processing(:enter, _old_state, %{request: {_path, _from, _time}} = data) do
	{:keep_state_and_data, data.process_timeout}
	end

	@doc false
	def processing({:call, _from}, {:perform, _path}, _data) do
	{:keep_state_and_data, :postpone}
	end

	@doc false
	def processing({:call, from}, :status, data) do
	handle_status_call(from, :processing, data)
	end

	@doc false
	def processing(:state_timeout, _, %{request: {_, from, _}} = data) do
	response = {:reply, from, {:error, :timeout}}
	{:next_state, :recycling, %{data \| request: nil}, [response, :hibernate]}
	end

	@doc false
	def processing(:info, {port, {:data, response}}, %{port: port, request: {_, from, _}} = data) do
	response = {:reply, from, handle_response(response)}
	next_state = (data.cycles >= data.recycle_threshold && :recycling) \|\| :available
	{:next_state, next_state, %{data \| request: nil}, [response, :hibernate]}
	end

	@doc false
	def recycling(:enter, _, %{port: port} = data) when is_port(port) do
	send(data.port, {:stop, :recycle})
	{:keep_state_and_data, {:state_timeout, data.startup_timeout, :stop}}
	end

	@doc false
	def recycling({:call, _from}, {:perform, _path}, _data) do
	{:keep_state_and_data, :postpone}
	end

	@doc false
	def recycling({:call, from}, :status, data) do
	handle_status_call(from, :recycling, data)
	end

	@doc false
	# In case of timeout, force close.
	def recycling(:state_timeout, :stop, data) do
	Kernel.send(data.port, {self(), :close})
	{:keep_state_and_data, {:state_timeout, data.startup_timeout, :close}}
	end

	@doc false
	def recycling(:state_timeout, :close, data) do
	{:stop, {:error, :port_close_failed}, data}
	end

	@doc false
	def recycling(:info, {port, :closed}, %{port: port} = data) do
	{:next_state, :starting, %{data \| port: nil, cycles: 0}}
	end

	@doc false
	def recycling(:info, {port, {:exit_status, _}}, %{port: port} = data) do
	{:next_state, :starting, %{data \| port: nil, cycles: 0}}
	end

	@doc false
	@impl :gen_statem
	def terminate(_, _, %{port: port}) do
	Kernel.send(port, {self(), :close})
	end

	@doc false
	def terminate(_, _, _) do
	:ok
	end

	defp send(port, command) do
	Kernel.send(port, {self(), {:command, :erlang.term_to_binary(command)}})
	end

	@errnos %{
	2 => :enoent,
	13 => :eaccess,
	20 => :enotdir,
	12 => :enomem,
	24 => :emfile,
	36 => :enametoolong
	}
	@errno Map.keys(@errnos)

	defp handle_response(data) do
	case :erlang.binary_to_term(data) do
	{:ok, {mime_type, encoding, content}} -> {:ok, Result.build(mime_type, encoding, content)}
	{:error, {errno, _}} when errno in @errno -> {:error, @errnos[errno]}
	{:error, {errno, string}} -> {:error, "#{errno}: #{string}"}
	{:error, _} = error -> error
	end
	end

	defp handle_status_call(from, state, data) do
	response = {:ok, %__MODULE__.Status{state: state, cycles: data.cycles}}
	{:keep_state_and_data, {:reply, from, response}}
	end
	end
	diff --git a/src/libmagic_port.c b/src/libmagic_port.c
	index 9a289cd..f992da9 100644
	--- a/src/libmagic_port.c
	+++ b/src/libmagic_port.c
	@@ -1,457 +1,457 @@
	//
	// libmagic_port: The Sorcerer’s Apprentice
	//
	// To use this program, compile it with dynamically linked libmagic, as mirrored
	// at https://github.com/file/file. You may install it with apt-get,
	// yum or brew. Refer to the Makefile for further reference.
	//
	// This program is designed to run interactively as a backend daemon to the
	// GenMagic library.
	//
	// Communication is done over STDIN/STDOUT as binary packets of 2 bytes length
	// plus X bytes payload, where the payload is an erlang term encoded with
	// :erlang.term_to_binary/1 and decoded with :erlang.binary_to_term/1.
	//
	// Once the program is ready, it sends the `:ready` atom.
	//
	// It is then up to the Erlang side to load databases, by sending messages:
	// - `{:add_database, path}`
	// - `{:add_default_database, _}`
	//
	// If the requested database have been loaded, an `{:ok, :loaded}` message will
	// follow. Otherwise, the process will exit (exit code 1).
	//
	// Commands are sent to the program STDIN as an erlang term of `{Operation,
	// Argument}`, and response of `{:ok \| :error, Response}`.
	//
	// The program may exit with the following exit codes:
	// - 1 if libmagic handles could not be opened,
	// - 2 if something went wrong with ei_*,
	// - 3 if you sent invalid term format,
	// - 255 if the loop exited unexpectedly.
	//
	// Invalid packets will cause the program to exit (exit code 3). This will
	// happen if your Erlang Term format doesn't match the version the program has
	// been compiled with.
	//
	// Commands:
	// {:reload, _} :: :ready
	// {:add_database, String.t()} :: {:ok, _} \| {:error, _}
	// {:add_default_database, _} :: {:ok, _} \| {:error, _}
	// {:file, path :: String.t()} :: {:ok, {type, encoding, name}} \| {:error,
	// :badarg} \| {:error, {errno :: integer(), String.t()}}
	// {:bytes, binary()} :: same as :file
	// {:stop, reason :: atom()} :: exit 0

	#include <arpa/inet.h>
	#include <ei.h>
	#include <errno.h>
	#include <getopt.h>
	#include <libgen.h>
	#include <magic.h>
	#include <stdarg.h>
	#include <stdbool.h>
	#include <stdio.h>
	#include <stdlib.h>
	#include <string.h>
	#include <sys/stat.h>
	#include <sys/types.h>
	#include <unistd.h>

	#define ERROR_OK 0
	#define ERROR_MAGIC 1
	#define ERROR_EI 2
	#define ERROR_BAD_TERM 3

	// We use a bigger than possible valid command length (around 4111 bytes) to
	// allow more precise errors when using too long paths.
	#define COMMAND_LEN 8000
	#define COMMAND_BUFFER_SIZE COMMAND_LEN + 1

	#define MAGIC_FLAGS_COMMON (MAGIC_CHECK \| MAGIC_ERROR)
	magic_t magic_setup(int flags);

	#define EI_ENSURE(result) \
	do { \
	if (result != 0) { \
	fprintf(stderr, "EI ERROR, line: %d", __LINE__); \
	exit(ERROR_EI); \
	} \
	} while (0);

	typedef char byte;

	void setup_environment();
	void magic_close_all();
	void magic_open_all();
	int magic_load_all(char *path);
	int process_command(uint16_t len, byte *buf);
	void process_file(char path, ei_x_buff result);
	void process_bytes(char bytes, int size, ei_x_buff result);
	size_t read_cmd(byte *buf);
	size_t write_cmd(byte *buf, size_t len);
	void error(ei_x_buff result, const char error);
	void handle_magic_error(magic_t handle, int errn, ei_x_buff *result);
	void fdseek(uint16_t count);

	static magic_t magic_mime_type; // MAGIC_MIME_TYPE
	static magic_t magic_mime_encoding; // MAGIC_MIME_ENCODING
	static magic_t magic_type_name; // MAGIC_NONE

	bool magic_loaded = false;

	int main(int argc, char **argv) {
	EI_ENSURE(ei_init());
	setup_environment();
	magic_open_all();

	byte buf[COMMAND_BUFFER_SIZE];
	uint16_t len;
	while ((len = read_cmd(buf)) > 0) {
	process_command(len, buf);
	}

	return 255;
	}

	int process_command(uint16_t len, byte *buf) {
	ei_x_buff result;
	char atom[128];
	int index, version, arity, termtype, termsize;
	index = 0;

	// Initialize result
	EI_ENSURE(ei_x_new_with_version(&result));
	EI_ENSURE(ei_x_encode_tuple_header(&result, 2));

	if (len >= COMMAND_LEN) {
	error(&result, "badarg");
	return 1;
	}

	if (ei_decode_version(buf, &index, &version) != 0) {
	exit(ERROR_BAD_TERM);
	}

	if (ei_decode_tuple_header(buf, &index, &arity) != 0) {
	error(&result, "badarg");
	return 1;
	}

	if (arity != 2) {
	error(&result, "badarg");
	return 1;
	}

	if (ei_decode_atom(buf, &index, atom) != 0) {
	error(&result, "badarg");
	return 1;
	}

	// {:file, path}
	if (strlen(atom) == 4 && strncmp(atom, "file", 4) == 0) {
	if (magic_loaded) {
	char path[4097];
	ei_get_type(buf, &index, &termtype, &termsize);

	if (termtype == ERL_BINARY_EXT) {
	if (termsize < 4096) {
	long bin_length;
	EI_ENSURE(ei_decode_binary(buf, &index, path, &bin_length));
	path[termsize] = '\0';
	process_file(path, &result);
	} else {
	error(&result, "enametoolong");
	return 1;
	}
	} else {
	error(&result, "badarg");
	return 1;
	}
	} else {
	error(&result, "magic_database_not_loaded");
	return 1;
	}
	// {:bytes, bytes}
	} else if (strlen(atom) == 5 && strncmp(atom, "bytes", 5) == 0) {
	if (magic_loaded) {
	int termtype;
	int termsize;
	char bytes[51];
	EI_ENSURE(ei_get_type(buf, &index, &termtype, &termsize));

	- if (termtype == ERL_BINARY_EXT && termsize < 50) {
	+ if (termtype == ERL_BINARY_EXT && termsize < 51) {
	long bin_length;
	EI_ENSURE(ei_decode_binary(buf, &index, bytes, &bin_length));
	bytes[termsize] = '\0';
	process_bytes(bytes, termsize, &result);
	} else {
	error(&result, "badarg");
	return 1;
	}
	} else {
	error(&result, "magic_database_not_loaded");
	return 1;
	}
	// {:add_database, path}
	} else if (strlen(atom) == 12 && strncmp(atom, "add_database", 12) == 0) {
	char path[4097];
	ei_get_type(buf, &index, &termtype, &termsize);

	if (termtype == ERL_BINARY_EXT) {
	if (termsize < 4096) {
	long bin_length;
	EI_ENSURE(ei_decode_binary(buf, &index, path, &bin_length));
	path[termsize] = '\0';
	if (magic_load_all(path) == 0) {
	EI_ENSURE(ei_x_encode_atom(&result, "ok"));
	EI_ENSURE(ei_x_encode_atom(&result, "loaded"));
	} else {
	EI_ENSURE(ei_x_encode_atom(&result, "error"));
	EI_ENSURE(ei_x_encode_atom(&result, "not_loaded"));
	}
	} else {
	error(&result, "enametoolong");
	return 1;
	}
	} else {
	error(&result, "badarg");
	return 1;
	}
	// {:add_default_database, _}
	} else if (strlen(atom) == 20 &&
	strncmp(atom, "add_default_database", 20) == 0) {
	if (magic_load_all(NULL) == 0) {
	EI_ENSURE(ei_x_encode_atom(&result, "ok"));
	EI_ENSURE(ei_x_encode_atom(&result, "loaded"));
	} else {
	EI_ENSURE(ei_x_encode_atom(&result, "error"));
	EI_ENSURE(ei_x_encode_atom(&result, "not_loaded"));
	}
	// {:reload, _}
	} else if (strlen(atom) == 6 && strncmp(atom, "reload", 6) == 0) {
	magic_open_all();
	return 0;
	// {:stop, _}
	} else if (strlen(atom) == 4 && strncmp(atom, "stop", 4) == 0) {
	exit(ERROR_OK);
	// badarg
	} else {
	error(&result, "badarg");
	return 1;
	}

	write_cmd(result.buff, result.index);

	EI_ENSURE(ei_x_free(&result));
	return 0;
	}

	void setup_environment() { opterr = 0; }

	void magic_close_all() {
	magic_loaded = false;
	if (magic_mime_encoding) {
	magic_close(magic_mime_encoding);
	magic_mime_encoding = NULL;
	}
	if (magic_mime_type) {
	magic_close(magic_mime_type);
	magic_mime_type = NULL;
	}
	if (magic_type_name) {
	magic_close(magic_type_name);
	magic_type_name = NULL;
	}
	}

	void magic_open_all() {
	magic_close_all();
	magic_mime_encoding = magic_open(MAGIC_FLAGS_COMMON \| MAGIC_MIME_ENCODING);
	magic_mime_type = magic_open(MAGIC_FLAGS_COMMON \| MAGIC_MIME_TYPE);
	magic_type_name = magic_open(MAGIC_FLAGS_COMMON \| MAGIC_NONE);

	if (magic_mime_encoding && magic_mime_type && magic_type_name) {
	ei_x_buff ok_buf;
	EI_ENSURE(ei_x_new_with_version(&ok_buf));
	EI_ENSURE(ei_x_encode_atom(&ok_buf, "ready"));
	write_cmd(ok_buf.buff, ok_buf.index);
	EI_ENSURE(ei_x_free(&ok_buf));
	} else {
	exit(ERROR_MAGIC);
	}
	}

	int magic_load_all(char *path) {
	int res;

	if ((res = magic_load(magic_mime_encoding, path)) != 0) {
	return res;
	}
	if ((res = magic_load(magic_mime_type, path)) != 0) {
	return res;
	}
	if ((res = magic_load(magic_type_name, path)) != 0) {
	return res;
	}
	magic_loaded = true;
	return 0;
	}

	void process_bytes(char path, int size, ei_x_buff result) {
	const char *mime_type_result = magic_buffer(magic_mime_type, path, size);
	const int mime_type_errno = magic_errno(magic_mime_type);

	if (mime_type_errno > 0) {
	handle_magic_error(magic_mime_type, mime_type_errno, result);
	return;
	}

	const char *mime_encoding_result =
	magic_buffer(magic_mime_encoding, path, size);
	int mime_encoding_errno = magic_errno(magic_mime_encoding);

	if (mime_encoding_errno > 0) {
	handle_magic_error(magic_mime_encoding, mime_encoding_errno, result);
	return;
	}

	const char *type_name_result = magic_buffer(magic_type_name, path, size);
	int type_name_errno = magic_errno(magic_type_name);

	if (type_name_errno > 0) {
	handle_magic_error(magic_type_name, type_name_errno, result);
	return;
	}

	EI_ENSURE(ei_x_encode_atom(result, "ok"));
	EI_ENSURE(ei_x_encode_tuple_header(result, 3));
	EI_ENSURE(
	ei_x_encode_binary(result, mime_type_result, strlen(mime_type_result)));
	EI_ENSURE(ei_x_encode_binary(result, mime_encoding_result,
	strlen(mime_encoding_result)));
	EI_ENSURE(
	ei_x_encode_binary(result, type_name_result, strlen(type_name_result)));
	return;
	}

	void handle_magic_error(magic_t handle, int errn, ei_x_buff *result) {
	const char *error = magic_error(handle);
	EI_ENSURE(ei_x_encode_atom(result, "error"));
	EI_ENSURE(ei_x_encode_tuple_header(result, 2));
	long errlon = (long)errn;
	EI_ENSURE(ei_x_encode_long(result, errlon));
	EI_ENSURE(ei_x_encode_binary(result, error, strlen(error)));
	return;
	}

	void process_file(char path, ei_x_buff result) {
	const char *mime_type_result = magic_file(magic_mime_type, path);
	const int mime_type_errno = magic_errno(magic_mime_type);

	if (mime_type_errno > 0) {
	handle_magic_error(magic_mime_type, mime_type_errno, result);
	return;
	}

	const char *mime_encoding_result = magic_file(magic_mime_encoding, path);
	int mime_encoding_errno = magic_errno(magic_mime_encoding);

	if (mime_encoding_errno > 0) {
	handle_magic_error(magic_mime_encoding, mime_encoding_errno, result);
	return;
	}

	const char *type_name_result = magic_file(magic_type_name, path);
	int type_name_errno = magic_errno(magic_type_name);

	if (type_name_errno > 0) {
	handle_magic_error(magic_type_name, type_name_errno, result);
	return;
	}

	EI_ENSURE(ei_x_encode_atom(result, "ok"));
	EI_ENSURE(ei_x_encode_tuple_header(result, 3));
	EI_ENSURE(
	ei_x_encode_binary(result, mime_type_result, strlen(mime_type_result)));
	EI_ENSURE(ei_x_encode_binary(result, mime_encoding_result,
	strlen(mime_encoding_result)));
	EI_ENSURE(
	ei_x_encode_binary(result, type_name_result, strlen(type_name_result)));
	return;
	}

	// Adapted from https://erlang.org/doc/tutorial/erl_interface.html
	// Changed `read_cmd`, the original one was buggy given some length (due to
	// endinaness).
	// TODO: Check if `write_cmd` exhibits the same issue.
	size_t read_exact(byte *buf, size_t len) {
	int i, got = 0;

	do {
	if ((i = read(0, buf + got, len - got)) <= 0) {
	return (i);
	}
	got += i;
	} while (got < len);

	return (len);
	}

	size_t write_exact(byte *buf, size_t len) {
	int i, wrote = 0;

	do {
	if ((i = write(1, buf + wrote, len - wrote)) <= 0)
	return (i);
	wrote += i;
	} while (wrote < len);

	return (len);
	}

	size_t read_cmd(byte *buf) {
	int i;
	if ((i = read(0, buf, sizeof(uint16_t))) <= 0) {
	return (i);
	}
	uint16_t len16 = (uint16_t )buf;
	len16 = ntohs(len16);

	// Buffer isn't large enough: just return possible len, without reading.
	// Up to the caller of verifying the size again and return an error.
	// buf left unchanged, stdin emptied of X bytes.
	if (len16 > COMMAND_LEN) {
	fdseek(len16);
	return len16;
	}

	return read_exact(buf, len16);
	}

	size_t write_cmd(byte *buf, size_t len) {
	byte li;

	li = (len >> 8) & 0xff;
	write_exact(&li, 1);

	li = len & 0xff;
	write_exact(&li, 1);

	return write_exact(buf, len);
	}

	void error(ei_x_buff result, const char error) {
	EI_ENSURE(ei_x_encode_atom(result, "error"));
	EI_ENSURE(ei_x_encode_atom(result, error));
	write_cmd(result->buff, result->index);
	EI_ENSURE(ei_x_free(result));
	}

	void fdseek(uint16_t count) {
	int i = 0;
	while (i < count) {
	getchar();
	i += 1;
	}
	}
	diff --git a/test/majic/majic_test.exs b/test/majic/majic_test.exs
	index b512bb3..9beadcb 100644
	--- a/test/majic/majic_test.exs
	+++ b/test/majic/majic_test.exs
	@@ -1,75 +1,81 @@
	defmodule MajicTest do
	use Majic.MagicCase
	alias Majic.Result

	doctest Majic
	@iterations 100

	test "Makefile is text file" do
	{:ok, pid} = Majic.Server.start_link([])
	path = absolute_path("Makefile")
	assert {:ok, %{mime_type: "text/x-makefile"}} = Majic.Server.perform(pid, path)
	end

	test "With Majic.perform" do
	{:ok, pid} = Majic.Server.start_link([])
	path = absolute_path("Makefile")
	assert {:ok, %{mime_type: "text/x-makefile"}} = Majic.perform(path, server: pid)
	end

	@tag external: true
	test "Load test local files" do
	{:ok, pid} = Majic.Server.start_link([])

	files_stream()
	\|> Stream.cycle()
	\|> Stream.take(@iterations)
	\|> Stream.map(&assert {:ok, %Result{}} = Majic.Server.perform(pid, &1))
	\|> Enum.all?()
	\|> assert
	end

	test "Non-existent file" do
	{:ok, pid} = Majic.Server.start_link([])
	path = missing_filename()
	assert_no_file(Majic.Server.perform(pid, path))
	end

	+ test "Bytes" do
	+ {:ok, pid} = Majic.Server.start_link([])
	+ bytes = File.read!("test/fixtures/cat.webp")
	+ assert {:ok, _} = Majic.Server.perform(pid, {:bytes, bytes})
	+ end
	+
	test "Named process" do
	{:ok, pid} = Majic.Server.start_link(name: :gen_magic)
	path = absolute_path("Makefile")
	assert {:ok, %{cycles: 0}} = Majic.Server.status(:gen_magic)
	assert {:ok, %{cycles: 0}} = Majic.Server.status(pid)
	assert {:ok, %Result{} = result} = Majic.Server.perform(:gen_magic, path)
	assert {:ok, %{cycles: 1}} = Majic.Server.status(:gen_magic)
	assert {:ok, %{cycles: 1}} = Majic.Server.status(pid)
	assert "text/x-makefile" = result.mime_type
	end

	describe "custom database" do
	setup do
	database = absolute_path("elixir.mgc")
	on_exit(fn -> File.rm(database) end)
	{_, 0} = System.cmd("file", ["-C", "-m", absolute_path("test/elixir")])
	[database: database]
	end

	test "recognises Elixir files", %{database: database} do
	{:ok, pid} = Majic.Server.start_link(database_patterns: [database])
	path = absolute_path("mix.exs")
	assert {:ok, %Result{} = result} = Majic.Server.perform(pid, path)
	assert "text/x-elixir" = result.mime_type
	assert "us-ascii" = result.encoding
	assert "Elixir module source text" = result.content
	end

	test "recognises Elixir files after a reload", %{database: database} do
	{:ok, pid} = Majic.Server.start_link([])
	path = absolute_path("mix.exs")
	{:ok, %Result{mime_type: mime}} = Majic.Server.perform(pid, path)
	refute mime == "text/x-elixir"
	:ok = Majic.Server.reload(pid, [database])
	assert {:ok, %Result{mime_type: "text/x-elixir"}} = Majic.Server.perform(pid, path)
	end
	end
	end

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