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-rw-r--r--lib/kernel/doc/src/file.xml45
-rw-r--r--lib/kernel/src/file.erl139
-rw-r--r--lib/kernel/src/gen_tcp.erl4
-rw-r--r--lib/kernel/src/inet.erl15
-rw-r--r--lib/kernel/src/inet_int.hrl2
-rw-r--r--lib/kernel/test/Makefile3
-rw-r--r--lib/kernel/test/gen_tcp_api_SUITE.erl10
-rw-r--r--lib/kernel/test/sendfile_SUITE.erl278
8 files changed, 488 insertions, 8 deletions
diff --git a/lib/kernel/doc/src/file.xml b/lib/kernel/doc/src/file.xml
index 7db20e6343..c6a1f25dd9 100644
--- a/lib/kernel/doc/src/file.xml
+++ b/lib/kernel/doc/src/file.xml
@@ -149,6 +149,9 @@
<datatype>
<name name="mode"/>
</datatype>
+ <datatype>
+ <name name="sendfile_option"/>
+ </datatype>
</datatypes>
<funcs>
@@ -1574,6 +1577,48 @@
</desc>
</func>
<func>
+ <name name="sendfile" arity="2"/>
+ <fsummary>send a file to a socket</fsummary>
+ <desc>
+ <p>Sends the file <c>Filename</c> to <c>Socket</c>.
+ Returns <c>{ok, BytesSent}</c> if successful,
+ otherwise <c>{error, Reason}</c>.</p>
+ </desc>
+ </func>
+ <func>
+ <name name="sendfile" arity="5"/>
+ <fsummary>send a file to a socket</fsummary>
+ <desc>
+ <p>Sends <c>Bytes</c> from the file
+ referenced by <c>RawFile</c> beginning at <c>Offset</c> to
+ <c>Socket</c>.
+ Returns <c>{ok, BytesSent}</c> if successful,
+ otherwise <c>{error, Reason}</c>. If <c>Bytes</c> is set to
+ 0 all data after the given <c>Offset</c> is sent.</p>
+ <p>The file used must be opened using the raw flag, and the process
+ calling sendfile must be the controlling process of the socket.
+ See <seealso marker="gen_tcp#controlling_process-2">gen_tcp:controlling_process/2</seealso></p>
+ <p>If the OS used does not support sendfile, an Erlang fallback
+ using file:read and gen_tcp:send is used.</p>
+ <p>The option list can contain the following options:
+ <taglist>
+ <tag><c>chunk_size</c></tag>
+ <item>The chunk size used by the erlang fallback to send
+ data. If using the fallback, this should be set to a value
+ which comfortably fits in the systems memory. Default is 20 MB.</item>
+ </taglist>
+ </p>
+ <p>On operating systems with thread support, it is recommended to use
+ async threads. See the command line flag
+ <c>+A</c> in <seealso marker="erts:erl">erl(1)</seealso>. If it is not
+ possible to use async threads for sendfile, it is recommended to use
+ a relatively small value for the send buffer on the socket. Otherwise
+ the Erlang VM might loose some of its soft realtime guarantees.
+ Which size to use depends on the OS/hardware and the requirements
+ of the application.</p>
+ </desc>
+ </func>
+ <func>
<name name="write" arity="2"/>
<fsummary>Write to a file</fsummary>
<desc>
diff --git a/lib/kernel/src/file.erl b/lib/kernel/src/file.erl
index 706c60caaf..0b0f91d86a 100644
--- a/lib/kernel/src/file.erl
+++ b/lib/kernel/src/file.erl
@@ -51,6 +51,9 @@
-export([pid2name/1]).
+%% Sendfile functions
+-export([sendfile/2,sendfile/5]).
+
%%% Obsolete exported functions
-export([raw_read_file_info/1, raw_write_file_info/2]).
@@ -103,7 +106,7 @@
-type date_time() :: calendar:datetime().
-type posix_file_advise() :: 'normal' | 'sequential' | 'random'
| 'no_reuse' | 'will_need' | 'dont_need'.
-
+-type sendfile_option() :: {chunk_size, non_neg_integer()}.
%%%-----------------------------------------------------------------
%%% General functions
@@ -1114,6 +1117,140 @@ change_time(Name, Atime, Mtime)
when is_tuple(Atime), is_tuple(Mtime) ->
write_file_info(Name, #file_info{atime=Atime, mtime=Mtime}).
+%%
+%% Send data using sendfile
+%%
+
+-define(MAX_CHUNK_SIZE, (1 bsl 20)*20). %% 20 MB, has to fit in primary memory
+
+-spec sendfile(RawFile, Socket, Offset, Bytes, Opts) ->
+ {'ok', non_neg_integer()} | {'error', inet:posix() | badarg | not_owner} when
+ RawFile :: file:fd(),
+ Socket :: inet:socket(),
+ Offset :: non_neg_integer(),
+ Bytes :: non_neg_integer(),
+ Opts :: [sendfile_option()].
+sendfile(File, _Sock, _Offet, _Bytes, _Opts) when is_pid(File) ->
+ {error, badarg};
+sendfile(File, Sock, Offset, Bytes, []) ->
+ sendfile(File, Sock, Offset, Bytes, ?MAX_CHUNK_SIZE, [], [],
+ false, false, false);
+sendfile(File, Sock, Offset, Bytes, Opts) ->
+ ChunkSize0 = proplists:get_value(chunk_size, Opts, ?MAX_CHUNK_SIZE),
+ ChunkSize = if ChunkSize0 > ?MAX_CHUNK_SIZE ->
+ ?MAX_CHUNK_SIZE;
+ true -> ChunkSize0
+ end,
+ %% Support for headers, trailers and options has been removed because the
+ %% Darwin and BSD API for using it does not play nice with
+ %% non-blocking sockets. See unix_efile.c for more info.
+ sendfile(File, Sock, Offset, Bytes, ChunkSize, [], [],
+ false,false,false).
+
+%% sendfile/2
+-spec sendfile(Filename, Socket) ->
+ {'ok', non_neg_integer()} | {'error', inet:posix() | badarg | not_owner}
+ when Filename :: file:name(),
+ Socket :: inet:socket().
+sendfile(Filename, Sock) ->
+ case file:open(Filename, [read, raw, binary]) of
+ {error, Reason} ->
+ {error, Reason};
+ {ok, Fd} ->
+ Res = sendfile(Fd, Sock, 0, 0, []),
+ file:close(Fd),
+ Res
+ end.
+
+%% Internal sendfile functions
+sendfile(#file_descriptor{ module = Mod } = Fd, Sock, Offset, Bytes,
+ ChunkSize, Headers, Trailers, Nodiskio, MNowait, Sync)
+ when is_port(Sock) ->
+ case Mod:sendfile(Fd, Sock, Offset, Bytes, ChunkSize, Headers, Trailers,
+ Nodiskio, MNowait, Sync) of
+ {error, enotsup} ->
+ sendfile_fallback(Fd, Sock, Offset, Bytes, ChunkSize,
+ Headers, Trailers);
+ Else ->
+ Else
+ end;
+sendfile(_,_,_,_,_,_,_,_,_,_) ->
+ {error, badarg}.
+
+%%%
+%% Sendfile Fallback
+%%%
+sendfile_fallback(File, Sock, Offset, Bytes, ChunkSize,
+ Headers, Trailers)
+ when Headers == []; is_integer(Headers) ->
+ case sendfile_fallback(File, Sock, Offset, Bytes, ChunkSize) of
+ {ok, BytesSent} when is_list(Trailers),
+ Trailers =/= [],
+ is_integer(Headers) ->
+ sendfile_send(Sock, Trailers, BytesSent+Headers);
+ {ok, BytesSent} when is_list(Trailers), Trailers =/= [] ->
+ sendfile_send(Sock, Trailers, BytesSent);
+ {ok, BytesSent} when is_integer(Headers) ->
+ {ok, BytesSent + Headers};
+ Else ->
+ Else
+ end;
+sendfile_fallback(File, Sock, Offset, Bytes, ChunkSize, Headers, Trailers) ->
+ case sendfile_send(Sock, Headers, 0) of
+ {ok, BytesSent} ->
+ sendfile_fallback(File, Sock, Offset, Bytes, ChunkSize, BytesSent,
+ Trailers);
+ Else ->
+ Else
+ end.
+
+
+sendfile_fallback(File, Sock, Offset, Bytes, ChunkSize) ->
+ {ok, CurrPos} = file:position(File, {cur, 0}),
+ {ok, _NewPos} = file:position(File, {bof, Offset}),
+ Res = sendfile_fallback_int(File, Sock, Bytes, ChunkSize, 0),
+ file:position(File, {bof, CurrPos}),
+ Res.
+
+
+sendfile_fallback_int(File, Sock, Bytes, ChunkSize, BytesSent)
+ when Bytes > BytesSent; Bytes == 0 ->
+ Size = if Bytes == 0 ->
+ ChunkSize;
+ (Bytes - BytesSent + ChunkSize) > 0 ->
+ Bytes - BytesSent;
+ true ->
+ ChunkSize
+ end,
+ case file:read(File, Size) of
+ {ok, Data} ->
+ case sendfile_send(Sock, Data, BytesSent) of
+ {ok,NewBytesSent} ->
+ sendfile_fallback_int(
+ File, Sock, Bytes, ChunkSize,
+ NewBytesSent);
+ Error ->
+ Error
+ end;
+ eof ->
+ {ok, BytesSent};
+ Error ->
+ Error
+ end;
+sendfile_fallback_int(_File, _Sock, BytesSent, _ChunkSize, BytesSent) ->
+ {ok, BytesSent}.
+
+sendfile_send(Sock, Data, Old) ->
+ Len = iolist_size(Data),
+ case gen_tcp:send(Sock, Data) of
+ ok ->
+ {ok, Len+Old};
+ Else ->
+ Else
+ end.
+
+
+
%%%-----------------------------------------------------------------
%%% Helpers
diff --git a/lib/kernel/src/gen_tcp.erl b/lib/kernel/src/gen_tcp.erl
index 8ab18c01b4..4d6c7f5f1d 100644
--- a/lib/kernel/src/gen_tcp.erl
+++ b/lib/kernel/src/gen_tcp.erl
@@ -27,6 +27,7 @@
-export([fdopen/2]).
-include("inet_int.hrl").
+-include("file.hrl").
-type option() ::
{active, true | false | once} |
@@ -302,7 +303,7 @@ unrecv(S, Data) when is_port(S) ->
Mod:unrecv(S, Data);
Error ->
Error
- end.
+ end.
%%
%% Set controlling process
@@ -354,3 +355,4 @@ mod([_|Opts], Address) ->
mod(Opts, Address);
mod([], Address) ->
mod(Address).
+
diff --git a/lib/kernel/src/inet.erl b/lib/kernel/src/inet.erl
index b60c68e3a1..49f64a9236 100644
--- a/lib/kernel/src/inet.erl
+++ b/lib/kernel/src/inet.erl
@@ -40,6 +40,10 @@
-export([tcp_controlling_process/2, udp_controlling_process/2,
tcp_close/1, udp_close/1]).
+
+%% used by sendfile
+-export([lock_socket/2]).
+
%% used by socks5
-export([setsockname/2, setpeername/2]).
@@ -1353,3 +1357,14 @@ stop_timer(Timer) ->
end;
T -> T
end.
+
+
+lock_socket(S,Val) ->
+ case erlang:port_info(S, connected) of
+ {connected, Pid} when Pid =/= self() ->
+ {error, not_owner};
+ undefined ->
+ {error, einval};
+ _ ->
+ prim_inet:ignorefd(S,Val)
+ end.
diff --git a/lib/kernel/src/inet_int.hrl b/lib/kernel/src/inet_int.hrl
index f8984b13fe..cf893c73eb 100644
--- a/lib/kernel/src/inet_int.hrl
+++ b/lib/kernel/src/inet_int.hrl
@@ -85,6 +85,8 @@
-define(INET_REQ_GETIFADDRS, 25).
-define(INET_REQ_ACCEPT, 26).
-define(INET_REQ_LISTEN, 27).
+-define(INET_REQ_IGNOREFD, 28).
+
%% TCP requests
%%-define(TCP_REQ_ACCEPT, 40). MOVED
%%-define(TCP_REQ_LISTEN, 41). MERGED
diff --git a/lib/kernel/test/Makefile b/lib/kernel/test/Makefile
index 82bc3fc6d1..5dcaad3f5e 100644
--- a/lib/kernel/test/Makefile
+++ b/lib/kernel/test/Makefile
@@ -74,7 +74,8 @@ MODULES= \
wrap_log_reader_SUITE \
cleanup \
zlib_SUITE \
- loose_node
+ loose_node \
+ sendfile_SUITE
APP_FILES = \
appinc.app \
diff --git a/lib/kernel/test/gen_tcp_api_SUITE.erl b/lib/kernel/test/gen_tcp_api_SUITE.erl
index cbaec2d6dd..a7af00c12a 100644
--- a/lib/kernel/test/gen_tcp_api_SUITE.erl
+++ b/lib/kernel/test/gen_tcp_api_SUITE.erl
@@ -22,7 +22,7 @@
%% are not tested here, because they are tested indirectly in this and
%% and other test suites.
--include_lib("test_server/include/test_server.hrl").
+-include_lib("common_test/include/ct.hrl").
-include_lib("kernel/include/inet.hrl").
-export([all/0, suite/0,groups/0,init_per_suite/1, end_per_suite/1,
@@ -46,6 +46,8 @@ groups() ->
{t_connect, [], [t_connect_timeout, t_connect_bad]},
{t_recv, [], [t_recv_timeout, t_recv_eof]}].
+
+
init_per_suite(Config) ->
Config.
@@ -55,9 +57,8 @@ end_per_suite(_Config) ->
init_per_group(_GroupName, Config) ->
Config.
-end_per_group(_GroupName, Config) ->
- Config.
-
+end_per_group(_,_Config) ->
+ ok.
init_per_testcase(_Func, Config) ->
Dog = test_server:timetrap(test_server:seconds(60)),
@@ -237,7 +238,6 @@ implicit_inet6(S, Addr) ->
?line ok = gen_tcp:close(S1).
-
%%% Utilities
%% Calls M:F/length(A), which should return a timeout error, and complete
diff --git a/lib/kernel/test/sendfile_SUITE.erl b/lib/kernel/test/sendfile_SUITE.erl
new file mode 100644
index 0000000000..04af16a6b9
--- /dev/null
+++ b/lib/kernel/test/sendfile_SUITE.erl
@@ -0,0 +1,278 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2011-2011. All Rights Reserved.
+%%
+%% The contents of this file are subject to the Erlang Public License,
+%% Version 1.1, (the "License"); you may not use this file except in
+%% compliance with the License. You should have received a copy of the
+%% Erlang Public License along with this software. If not, it can be
+%% retrieved online at http://www.erlang.org/.
+%%
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and limitations
+%% under the License.
+%%
+%% %CopyrightEnd%
+%%
+
+-module(sendfile_SUITE).
+
+-include_lib("common_test/include/ct.hrl").
+-include_lib("kernel/include/file.hrl").
+
+-compile(export_all).
+
+all() ->
+ [t_sendfile_small
+ ,t_sendfile_big
+ ,t_sendfile_partial
+ ,t_sendfile_offset
+ ,t_sendfile_sendafter
+ ,t_sendfile_recvafter
+ ,t_sendfile_sendduring
+ ,t_sendfile_recvduring
+ ].
+
+init_per_suite(Config) ->
+ Priv = ?config(priv_dir, Config),
+ SFilename = filename:join(Priv, "sendfile_small.html"),
+ {ok, DS} = file:open(SFilename,[write,raw]),
+ file:write(DS,"yo baby yo"),
+ file:sync(DS),
+ file:close(DS),
+ BFilename = filename:join(Priv, "sendfile_big.html"),
+ {ok, DB} = file:open(BFilename,[write,raw]),
+ [file:write(DB,[<<0:(10*8*1024*1024)>>]) || _I <- lists:seq(1,51)],
+ file:sync(DB),
+ file:close(DB),
+ [{small_file, SFilename},
+ {file_opts,[raw,binary]},
+ {big_file, BFilename}|Config].
+
+end_per_suite(Config) ->
+ file:delete(proplists:get_value(big_file, Config)).
+
+init_per_testcase(TC,Config) when TC == t_sendfile_recvduring;
+ TC == t_sendfile_sendduring ->
+ Filename = proplists:get_value(small_file, Config),
+
+ Send = fun(Sock) ->
+ {_Size, Data} = sendfile_file_info(Filename),
+ {ok,D} = file:open(Filename, [raw,binary,read]),
+ prim_file:sendfile(D, Sock, 0, 0, 0,
+ [],[],false,false,false),
+ Data
+ end,
+
+ %% Check if sendfile is supported on this platform
+ case catch sendfile_send(Send) of
+ ok ->
+ Config;
+ Error ->
+ ct:log("Error: ~p",[Error]),
+ {skip,"Not supported"}
+ end;
+init_per_testcase(_Tc,Config) ->
+ Config.
+
+
+t_sendfile_small(Config) when is_list(Config) ->
+ Filename = proplists:get_value(small_file, Config),
+
+ Send = fun(Sock) ->
+ {Size, Data} = sendfile_file_info(Filename),
+ {ok, Size} = file:sendfile(Filename, Sock),
+ Data
+ end,
+
+ ok = sendfile_send(Send).
+
+t_sendfile_big(Config) when is_list(Config) ->
+ Filename = proplists:get_value(big_file, Config),
+
+ Send = fun(Sock) ->
+ {ok, #file_info{size = Size}} =
+ file:read_file_info(Filename),
+ {ok, Size} = file:sendfile(Filename, Sock),
+ Size
+ end,
+
+ ok = sendfile_send("localhost", Send, 0).
+
+t_sendfile_partial(Config) ->
+ Filename = proplists:get_value(small_file, Config),
+ FileOpts = proplists:get_value(file_opts, Config, []),
+
+ SendSingle = fun(Sock) ->
+ {_Size, <<Data:5/binary,_/binary>>} =
+ sendfile_file_info(Filename),
+ {ok,D} = file:open(Filename,[read|FileOpts]),
+ {ok,5} = file:sendfile(D,Sock,0,5,[]),
+ file:close(D),
+ Data
+ end,
+ ok = sendfile_send(SendSingle),
+
+ {_Size, <<FData:5/binary,SData:3/binary,_/binary>>} =
+ sendfile_file_info(Filename),
+ {ok,D} = file:open(Filename,[read|FileOpts]),
+ {ok, <<FData/binary>>} = file:read(D,5),
+ FSend = fun(Sock) ->
+ {ok,5} = file:sendfile(D,Sock,0,5,[]),
+ FData
+ end,
+
+ ok = sendfile_send(FSend),
+
+ SSend = fun(Sock) ->
+ {ok,3} = file:sendfile(D,Sock,5,3,[]),
+ SData
+ end,
+
+ ok = sendfile_send(SSend),
+
+ {ok, <<SData/binary>>} = file:read(D,3),
+
+ file:close(D).
+
+t_sendfile_offset(Config) ->
+ Filename = proplists:get_value(small_file, Config),
+ FileOpts = proplists:get_value(file_opts, Config, []),
+
+ Send = fun(Sock) ->
+ {_Size, <<_:5/binary,Data:3/binary,_/binary>> = AllData} =
+ sendfile_file_info(Filename),
+ {ok,D} = file:open(Filename,[read|FileOpts]),
+ {ok,3} = file:sendfile(D,Sock,5,3,[]),
+ {ok, AllData} = file:read(D,100),
+ file:close(D),
+ Data
+ end,
+ ok = sendfile_send(Send).
+
+
+t_sendfile_sendafter(Config) ->
+ Filename = proplists:get_value(small_file, Config),
+
+ Send = fun(Sock) ->
+ {Size, Data} = sendfile_file_info(Filename),
+ {ok, Size} = file:sendfile(Filename, Sock),
+ ok = gen_tcp:send(Sock, <<2>>),
+ <<Data/binary,2>>
+ end,
+
+ ok = sendfile_send(Send).
+
+t_sendfile_recvafter(Config) ->
+ Filename = proplists:get_value(small_file, Config),
+
+ Send = fun(Sock) ->
+ {Size, Data} = sendfile_file_info(Filename),
+ {ok, Size} = file:sendfile(Filename, Sock),
+ ok = gen_tcp:send(Sock, <<1>>),
+ {ok,<<1>>} = gen_tcp:recv(Sock, 1),
+ <<Data/binary,1>>
+ end,
+
+ ok = sendfile_send(Send).
+
+t_sendfile_sendduring(Config) ->
+ Filename = proplists:get_value(big_file, Config),
+
+ Send = fun(Sock) ->
+ {ok, #file_info{size = Size}} =
+ file:read_file_info(Filename),
+ spawn_link(fun() ->
+ timer:sleep(10),
+ ok = gen_tcp:send(Sock, <<2>>)
+ end),
+ {ok, Size} = file:sendfile(Filename, Sock),
+ Size+1
+ end,
+
+ ok = sendfile_send("localhost", Send, 0).
+
+t_sendfile_recvduring(Config) ->
+ Filename = proplists:get_value(big_file, Config),
+
+ Send = fun(Sock) ->
+ {ok, #file_info{size = Size}} =
+ file:read_file_info(Filename),
+ spawn_link(fun() ->
+ timer:sleep(10),
+ ok = gen_tcp:send(Sock, <<1>>),
+ {ok,<<1>>} = gen_tcp:recv(Sock, 1)
+ end),
+ {ok, Size} = file:sendfile(Filename, Sock),
+ timer:sleep(1000),
+ Size+1
+ end,
+
+ ok = sendfile_send("localhost", Send, 0).
+
+%% TODO: consolidate tests and reduce code
+sendfile_send(Send) ->
+ sendfile_send("localhost",Send).
+sendfile_send(Host, Send) ->
+ sendfile_send(Host, Send, []).
+sendfile_send(Host, Send, Orig) ->
+ spawn_link(?MODULE, sendfile_server, [self(), Orig]),
+ receive
+ {server, Port} ->
+ {ok, Sock} = gen_tcp:connect(Host, Port,
+ [binary,{packet,0},
+ {active,false}]),
+ Data = Send(Sock),
+ ok = gen_tcp:close(Sock),
+ receive
+ {ok, Bin} ->
+ Data = Bin,
+ ok
+ end
+ end.
+
+sendfile_server(ClientPid, Orig) ->
+ {ok, LSock} = gen_tcp:listen(0, [binary, {packet, 0},
+ {active, true},
+ {reuseaddr, true}]),
+ {ok, Port} = inet:port(LSock),
+ ClientPid ! {server, Port},
+ {ok, Sock} = gen_tcp:accept(LSock),
+ {ok, Bin} = sendfile_do_recv(Sock, Orig),
+ ClientPid ! {ok, Bin},
+ gen_tcp:send(Sock, <<1>>).
+
+-define(SENDFILE_TIMEOUT, 10000).
+%% f(),{ok, S} = gen_tcp:connect("localhost",7890,[binary]),file:sendfile("/ldisk/lukas/otp/sendfiletest.dat",S).
+sendfile_do_recv(Sock, Bs) ->
+ receive
+ {tcp, Sock, B} ->
+ case binary:match(B,<<1>>) of
+ nomatch when is_list(Bs) ->
+ sendfile_do_recv(Sock, [B|Bs]);
+ nomatch when is_integer(Bs) ->
+ sendfile_do_recv(Sock, byte_size(B) + Bs);
+ _ when is_list(Bs) ->
+ ct:log("Stopped due to a 1"),
+ {ok, iolist_to_binary(lists:reverse([B|Bs]))};
+ _ when is_integer(Bs) ->
+ ct:log("Stopped due to a 1"),
+ {ok, byte_size(B) + Bs}
+ end;
+ {tcp_closed, Sock} when is_list(Bs) ->
+ ct:log("Stopped due to close"),
+ {ok, iolist_to_binary(lists:reverse(Bs))};
+ {tcp_closed, Sock} when is_integer(Bs) ->
+ ct:log("Stopped due to close"),
+ {ok, Bs}
+ after ?SENDFILE_TIMEOUT ->
+ ct:log("Sendfile timeout"),
+ timeout
+ end.
+
+sendfile_file_info(File) ->
+ {ok, #file_info{size = Size}} = file:read_file_info(File),
+ {ok, Data} = file:read_file(File),
+ {Size, Data}.
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