%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 1996-2018. All Rights Reserved.
%%
%% Licensed under the Apache License, Version 2.0 (the "License");
%% you may not use this file except in compliance with the License.
%% You may obtain a copy of the License at
%%
%% http://www.apache.org/licenses/LICENSE-2.0
%%
%% Unless required by applicable law or agreed to in writing, software
%% distributed under the License is distributed on an "AS IS" BASIS,
%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
%% See the License for the specific language governing permissions and
%% limitations under the License.
%%
%% %CopyrightEnd%
%%
%% This is a development feature when developing a new file module,
%% ugly but practical.
-ifndef(FILE_MODULE).
-define(FILE_MODULE, file).
-endif.
-ifndef(FILE_SUITE).
-define(FILE_SUITE, file_SUITE).
-endif.
-ifndef(FILE_INIT).
-define(FILE_INIT(Config), Config).
-endif.
-ifndef(FILE_FINI).
-define(FILE_FINI(Config), Config).
-endif.
-ifndef(FILE_INIT_PER_TESTCASE).
-define(FILE_INIT_PER_TESTCASE(Config), Config).
-endif.
-ifndef(FILE_FIN_PER_TESTCASE).
-define(FILE_FIN_PER_TESTCASE(Config), Config).
-endif.
-define(PRIM_FILE, prim_file).
-module(?FILE_SUITE).
-export([all/0, suite/0,groups/0,init_per_suite/1, end_per_suite/1,
init_per_group/2,end_per_group/2,
init_per_testcase/2, end_per_testcase/2,
read_write_file/1, names/1]).
-export([cur_dir_0/1, cur_dir_1/1, make_del_dir/1,
list_dir/1,list_dir_error/1,
untranslatable_names/1, untranslatable_names_error/1,
pos1/1, pos2/1, pos3/1]).
-export([close/1, consult1/1, path_consult/1, delete/1]).
-export([ eval1/1, path_eval/1, script1/1, path_script/1,
open1/1,
old_modes/1, new_modes/1, path_open/1, open_errors/1]).
-export([ file_info_basic_file/1, file_info_basic_directory/1,
file_info_bad/1, file_info_times/1, file_write_file_info/1,
file_wfi_helpers/1]).
-export([rename/1, access/1, truncate/1, datasync/1, sync/1,
read_write/1, pread_write/1, append/1, exclusive/1]).
-export([ e_delete/1, e_rename/1, e_make_dir/1, e_del_dir/1]).
-export([otp_5814/1, otp_10852/1]).
-export([ read_not_really_compressed/1,
read_compressed_cooked/1, read_compressed_cooked_binary/1,
read_cooked_tar_problem/1,
write_compressed/1, compress_errors/1, catenated_gzips/1,
compress_async_crash/1]).
-export([ make_link/1, read_link_info_for_non_link/1, symlinks/1]).
-export([copy/1]).
-export([new_slave/2, old_slave/2, run_test/2]).
-export([delayed_write/1, read_ahead/1, segment_read/1, segment_write/1]).
-export([ipread/1]).
-export([pid2name/1]).
-export([interleaved_read_write/1]).
-export([unicode/1]).
-export([altname/1]).
-export([large_file/0, large_file/1, large_write/0, large_write/1]).
-export([read_line_1/1, read_line_2/1, read_line_3/1,read_line_4/1]).
-export([advise/1]).
-export([allocate/1]).
-export([standard_io/1,mini_server/1]).
-export([old_io_protocol/1]).
-export([unicode_mode/1]).
-export([volume_relative_paths/1]).
-export([tiny_writes/1, tiny_writes_delayed/1,
large_writes/1, large_writes_delayed/1,
tiny_reads/1, tiny_reads_ahead/1]).
%% Debug exports
-export([create_file_slow/2, create_file/2, create_bin/2]).
-export([verify_file/2, verify_bin/3]).
-export([bytes/2, iterate/3]).
%% System probe functions that might be handy to check from the shell
-export([disc_free/1, memsize/0]).
-include_lib("common_test/include/ct.hrl").
-include_lib("common_test/include/ct_event.hrl").
-include_lib("kernel/include/file.hrl").
-define(THROW_ERROR(RES), throw({fail, ?LINE, RES})).
suite() ->
[{ct_hooks,[ts_install_cth]},
{timetrap,{minutes,1}}].
all() ->
[unicode, altname, read_write_file, {group, dirs},
{group, files}, delete, rename, names, volume_relative_paths,
{group, errors}, {group, compression}, {group, links}, copy,
delayed_write, read_ahead, segment_read, segment_write,
ipread, pid2name, interleaved_read_write, otp_5814, otp_10852,
large_file, large_write, read_line_1, read_line_2, read_line_3,
read_line_4, standard_io, old_io_protocol,
unicode_mode, {group, bench}
].
groups() ->
[{dirs, [], [make_del_dir, cur_dir_0, cur_dir_1,
list_dir, list_dir_error, untranslatable_names,
untranslatable_names_error]},
{files, [],
[{group, open}, {group, pos}, {group, file_info},
{group, consult}, {group, eval}, {group, script},
truncate, sync, datasync, advise, allocate]},
{open, [],
[open1, old_modes, new_modes, path_open, close, access,
read_write, pread_write, append, open_errors,
exclusive]},
{pos, [], [pos1, pos2, pos3]},
{file_info, [],
[file_info_basic_file, file_info_basic_directory,
file_info_bad, file_info_times, file_write_file_info,
file_wfi_helpers]},
{consult, [], [consult1, path_consult]},
{eval, [], [eval1, path_eval]},
{script, [], [script1, path_script]},
{errors, [],
[e_delete, e_rename, e_make_dir, e_del_dir]},
{compression, [],
[read_compressed_cooked, read_compressed_cooked_binary,
read_cooked_tar_problem, read_not_really_compressed,
write_compressed, compress_errors, catenated_gzips,
compress_async_crash]},
{links, [],
[make_link, read_link_info_for_non_link, symlinks]},
{bench, [],
[tiny_writes, tiny_writes_delayed,
large_writes, large_writes_delayed,
tiny_reads, tiny_reads_ahead]}].
init_per_group(_GroupName, Config) ->
Config.
end_per_group(bench, Config) ->
ScratchDir = proplists:get_value(priv_dir, Config),
file:delete(filename:join(ScratchDir, "benchmark_scratch_file")),
Config;
end_per_group(_GroupName, Config) ->
Config.
init_per_suite(Config) when is_list(Config) ->
SaslConfig = case application:start(sasl) of
{error, {already_started, sasl}} ->
[];
ok ->
[{sasl,started}]
end,
application:start(os_mon),
case os:type() of
{win32, _} ->
Priv = proplists:get_value(priv_dir, Config),
HasAccessTime =
case ?FILE_MODULE:read_file_info(Priv) of
{ok, #file_info{atime={_, {0, 0, 0}}}} ->
%% This is a unfortunately a FAT file system.
[no_access_time];
{ok, _} ->
[]
end,
?FILE_INIT(HasAccessTime++Config++SaslConfig);
_ ->
?FILE_INIT(Config++SaslConfig)
end.
end_per_suite(Config) when is_list(Config) ->
case os:type() of
{win32, _} ->
os:cmd("subst z: /d");
_ ->
ok
end,
application:stop(os_mon),
case proplists:get_value(sasl, Config) of
started ->
application:stop(sasl);
_Else ->
ok
end,
?FILE_FINI(Config).
init_per_testcase(_Func, Config) ->
%%error_logger:info_msg("~p:~p *****~n", [?MODULE, _Func]),
?FILE_INIT_PER_TESTCASE(Config).
end_per_testcase(_Func, Config) ->
%% error_logger:info_msg("~p:~p END *****~n", [?MODULE, _Func]),
?FILE_FIN_PER_TESTCASE(Config).
%% Matches a term (the last) against alternatives
expect(X, _, X) ->
X;
expect(_, X, X) ->
X.
expect(X, _, _, X) ->
X;
expect(_, X, _, X) ->
X;
expect(_, _, X, X) ->
X.
expect(X, _, _, _, X) ->
X;
expect(_, X, _, _, X) ->
X;
expect(_, _, X, _, X) ->
X;
expect(_, _, _, X, X) ->
X.
%% Calculate the time difference
time_dist({YY, MM, DD, H, M, S}, DT) ->
time_dist({{YY, MM, DD}, {H, M, S}}, DT);
time_dist(DT, {YY, MM, DD, H, M, S}) ->
time_dist(DT, {{YY, MM, DD}, {H, M, S}});
time_dist({_D1, _T1} = DT1, {_D2, _T2} = DT2) ->
calendar:datetime_to_gregorian_seconds(DT2)
- calendar:datetime_to_gregorian_seconds(DT1).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
mini_server(Parent) ->
receive
die ->
ok;
{io_request,From,To,{put_chars,_Encoding,Data}} ->
Parent ! {io_request,From,To,{put_chars,Data}},
From ! {io_reply, To, ok},
mini_server(Parent);
{io_request,From,To,{get_chars,'',N}} ->
Parent ! {io_request,From,To,{get_chars,'',N}},
From ! {io_reply, To, {ok, lists:duplicate(N,$a)}},
mini_server(Parent);
{io_request,From,To,{get_line,''}} ->
Parent ! {io_request,From,To,{get_line,''}},
From ! {io_reply, To, {ok, "hej\n"}},
mini_server(Parent)
end.
%% Test that standard i/o-servers work with file module.
standard_io(Config) when is_list(Config) ->
%% Really just a smoke test
Pid = spawn(?MODULE,mini_server,[self()]),
register(mini_server,Pid),
ok = file:write(mini_server,<<"hej\n">>),
receive
{io_request,_,_,{put_chars,<<"hej\n">>}} ->
ok
after 1000 ->
exit(noreply)
end,
{ok,"aaaaa"} = file:read(mini_server,5),
receive
{io_request,_,_,{get_chars,'',5}} ->
ok
after 1000 ->
exit(noreply)
end,
{ok,"hej\n"} = file:read_line(mini_server),
receive
{io_request,_,_,{get_line,''}} ->
ok
after 1000 ->
exit(noreply)
end,
OldGL = group_leader(),
group_leader(Pid,self()),
ok = file:write(standard_io,<<"hej\n">>),
group_leader(OldGL,self()),
receive
{io_request,_,_,{put_chars,<<"hej\n">>}} ->
ok
after 1000 ->
exit(noreply)
end,
group_leader(Pid,self()),
{ok,"aaaaa"} = file:read(standard_io,5),
group_leader(OldGL,self()),
receive
{io_request,_,_,{get_chars,'',5}} ->
ok
after 1000 ->
exit(noreply)
end,
group_leader(Pid,self()),
{ok,"hej\n"} = file:read_line(standard_io),
group_leader(OldGL,self()),
receive
{io_request,_,_,{get_line,''}} ->
ok
after 1000 ->
exit(noreply)
end,
Pid ! die,
receive after 1000 -> ok end.
%% Test that the old file IO protocol =< R16B still works.
old_io_protocol(Config) when is_list(Config) ->
RootDir = proplists:get_value(priv_dir,Config),
Name = filename:join(RootDir,
atom_to_list(?MODULE)
++"old_io_protocol.fil"),
MyData = "0123456789abcdefghijklmnopqrstuvxyz",
ok = ?FILE_MODULE:write_file(Name, MyData),
{ok, Fd} = ?FILE_MODULE:open(Name, write),
Fd ! {file_request,self(),Fd,truncate},
receive
{file_reply,Fd,ok} -> ok
end,
ok = ?FILE_MODULE:close(Fd),
{ok, <<>>} = ?FILE_MODULE:read_file(Name),
[] = flush(),
ok.
unicode_mode(Config) ->
Dir = {dir, proplists:get_value(priv_dir,Config)},
OptVariants = [[Dir],
[Dir, {encoding, utf8}],
[Dir, binary],
[Dir, binary, {encoding, utf8}]
],
ReadVariants = [{read, fun(Fd) -> um_read(Fd, fun(Fd1) -> file:read(Fd1, 1024) end) end},
{read_line, fun(Fd) -> um_read(Fd, fun(Fd1) -> file:read_line(Fd1) end) end}
%%{pread, fun(Fd) -> file:pread(Fd, 0, 1024) end},
%%{preadl, fun(Fd) -> file:pread(Fd, [{0, 1024}]) end},
],
_ = [read_write_0("ASCII: list: Hello World", Read, Opt) ||
Opt <- OptVariants, Read <- ReadVariants],
_ = [read_write_0("LATIN1: list: åäöÅÄÖ", Read, Opt) ||
Opt <- OptVariants, Read <- ReadVariants],
_ = [read_write_0(<<"ASCII: bin: Hello World">>, Read, Opt) ||
Opt <- OptVariants, Read <- ReadVariants],
_ = [read_write_0(<<"LATIN1: bin: åäöÅÄÖ">>, Read, Opt) ||
Opt <- OptVariants, Read <- ReadVariants],
%% These will be double encoded if option is encoding utf-8
_ = [read_write_0(<<"UTF8: bin: Ωß"/utf8>>, Read, Opt) ||
Opt <- OptVariants, Read <- ReadVariants],
%% These should not work (with encoding set to utf-8)
%% according to file's documentation
_ = [read_write_0("UTF8: list: Ωß", Read, Opt) ||
Opt <- OptVariants, Read <- ReadVariants],
ok.
read_write_0(Str, {Func, ReadFun}, Options) ->
try
Res = read_write_1(Str, ReadFun, Options),
io:format("~p: ~ts ~p '~p'~n", [Func, Str, tl(Options), Res]),
ok
catch {fail, Line, ReadBytes = [_|_]} ->
io:format("~p:~p: ~p ERROR: ~w vs~n ~w~n - ~p~n",
[?MODULE, Line, Func, Str, ReadBytes, Options]),
exit({error, ?LINE});
{fail, Line, ReadBytes} ->
io:format("~p:~p: ~p ERROR: ~ts vs~n ~w~n - ~p~n",
[?MODULE, Line, Func, Str, ReadBytes, Options]),
exit({error, ?LINE});
error:What:Stacktrace ->
io:format("~p:??: ~p ERROR: ~p from~n ~w~n ~p~n",
[?MODULE, Func, What, Str, Options]),
io:format("\t~p~n", [Stacktrace]),
exit({error, ?LINE})
end.
read_write_1(Str0, ReadFun, [{dir,Dir}|Options]) ->
File = um_filename(Str0, Dir, Options),
Pre = "line 1\n", Post = "\nlast line\n",
Str = case is_list(Str0) andalso lists:max(Str0) > 255 of
false -> %% Normal case Use options
{ok, FdW} = file:open(File, [write|Options]),
IO = [Pre, Str0, Post],
ok = file:write(FdW, IO),
case is_binary(Str0) of
true -> iolist_to_binary(IO);
false -> lists:append(IO)
end;
true -> %% Test unicode lists
{ok, FdW} = file:open(File, [write]),
Utf8 = unicode:characters_to_binary([Pre, Str0, Post]),
file:write(FdW, Utf8),
{unicode, Utf8}
end,
file:close(FdW),
{ok, FdR} = file:open(File, [read|Options]),
ReadRes = ReadFun(FdR),
file:close(FdR),
Res = um_check(Str, ReadRes, Options),
file:delete(File),
Res.
um_read(Fd, Fun) ->
um_read(Fd, Fun, []).
um_read(Fd, Fun, Acc) ->
case Fun(Fd) of
eof ->
case is_binary(hd(Acc)) of
true -> {ok, iolist_to_binary(lists:reverse(Acc))};
false -> {ok, lists:append(lists:reverse(Acc))}
end;
{ok, Data} ->
um_read(Fd, Fun, [Data|Acc]);
Error ->
Error
end.
um_check(Str, {ok, Str}, _) -> ok;
um_check(Bin, {ok, Res}, _Options) when is_binary(Bin), is_list(Res) ->
case list_to_binary(Res) of
Bin -> ok;
_ -> ?THROW_ERROR(Res)
end;
um_check(Str, {ok, Res}, _Options) when is_list(Str), is_binary(Res) ->
case iolist_to_binary(Str) of
Res -> ok;
_ -> ?THROW_ERROR(Res)
end;
um_check({unicode, Utf8Bin}, Res, Options) ->
um_check_unicode(Utf8Bin, Res,
proplists:get_value(binary, Options, false),
proplists:get_value(encoding, Options, none));
um_check(_Str, Res, _Options) ->
?THROW_ERROR(Res).
um_check_unicode(Utf8Bin, {ok, Utf8Bin}, true, none) ->
ok;
um_check_unicode(Utf8Bin, {ok, List = [_|_]}, false, none) ->
case binary_to_list(Utf8Bin) == List of
true -> ok;
false -> ?THROW_ERROR(List)
end;
um_check_unicode(_Utf8Bin, {error, {no_translation, unicode, latin1}}, _, _) ->
no_translation;
um_check_unicode(_Utf8Bin, Error = {error, _}, _, _Unicode) ->
?THROW_ERROR(Error);
um_check_unicode(_Utf8Bin, {ok, _ListOrBin}, _, _UTF8_) ->
%% List = if is_binary(ListOrBin) -> unicode:characters_to_list(ListOrBin);
%% true -> ListOrBin
%% end,
%% io:format("In: ~w~n", [binary_to_list(Utf8Bin)]),
%% io:format("Ut: ~w~n", [List]),
?THROW_ERROR({shoud_be, no_translation}).
um_filename(Bin, Dir, Options) when is_binary(Bin) ->
um_filename(binary_to_list(Bin), Dir, Options);
um_filename(Str = [_|_], Dir, Options) ->
Name = hd(string:lexemes(Str, ":")),
Enc = atom_to_list(proplists:get_value(encoding, Options, latin1)),
File = case lists:member(binary, Options) of
true ->
"test_" ++ Name ++ "_bin_enc_" ++ Enc;
false ->
"test_" ++ Name ++ "_list_enc_" ++ Enc
end,
filename:join(Dir, File).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
read_write_file(Config) when is_list(Config) ->
RootDir = proplists:get_value(priv_dir,Config),
Name = filename:join(RootDir,
atom_to_list(?MODULE)
++"_read_write_file"),
%% Try writing and reading back some term
SomeTerm = {"This term",{will,be},[written,$t,$o],1,file,[]},
Bin1 = term_to_binary(SomeTerm),
ok = do_read_write_file(Name, Bin1),
%% Try a "null" term
NullTerm = [],
Bin2 = term_to_binary(NullTerm),
ok = do_read_write_file(Name, Bin2),
%% Try reading a nonexistent file
Name2 = filename:join(RootDir,
atom_to_list(?MODULE)
++"_nonexistent_file"),
{error, enoent} = ?FILE_MODULE:read_file(Name2),
{error, enoent} = ?FILE_MODULE:read_file(""),
{error, enoent} = ?FILE_MODULE:read_file(''),
%% Try writing to a bad filename
{error, enoent} = do_read_write_file("", Bin2),
%% Try writing something else than a binary
{error, badarg} = do_read_write_file(Name, {1,2,3}),
{error, badarg} = do_read_write_file(Name, self()),
%% Some non-term binaries
ok = do_read_write_file(Name, []),
%% Write some iolists
ok = do_read_write_file(Name, [Bin1,[],[[Bin2]]]),
ok = do_read_write_file(Name, ["string",<<"binary">>]),
ok = do_read_write_file(Name, "pure string"),
[] = flush(),
ok.
do_read_write_file(Name, Data) ->
case ?FILE_MODULE:write_file(Name, Data) of
ok ->
BinData = iolist_to_binary(Data),
{ok,BinData} = ?FILE_MODULE:read_file(Name),
ok = ?FILE_MODULE:write_file(Name, Data, []),
{ok,BinData} = ?FILE_MODULE:read_file(Name),
ok = ?FILE_MODULE:write_file(Name, Data, [raw]),
{ok,BinData} = ?FILE_MODULE:read_file(Name),
ok;
{error,_}=Res ->
Res = ?FILE_MODULE:write_file(Name, Data, []),
Res = ?FILE_MODULE:write_file(Name, Data, [raw]),
Res
end.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
make_del_dir(Config) when is_list(Config) ->
RootDir = proplists:get_value(priv_dir,Config),
NewDir = filename:join(RootDir,
atom_to_list(?MODULE)
++"_mk-dir"),
ok = ?FILE_MODULE:make_dir(NewDir),
{error, eexist} = ?FILE_MODULE:make_dir(NewDir),
ok = ?FILE_MODULE:del_dir(NewDir),
{error, enoent} = ?FILE_MODULE:del_dir(NewDir),
%% Make sure we are not in a directory directly under test_server
%% as that would result in eacces errors when trying to delete '..',
%% because there are processes having that directory as current.
ok = ?FILE_MODULE:make_dir(NewDir),
{ok,CurrentDir} = file:get_cwd(),
case {os:type(), length(NewDir) >= 260 } of
{{win32,_}, true} ->
io:format("Skip set_cwd for windows path longer than 260 (MAX_PATH)\n", []),
io:format("\nNewDir = ~p\n", [NewDir]);
_ ->
ok = ?FILE_MODULE:set_cwd(NewDir)
end,
try
%% Check that we get an error when trying to create...
%% a deep directory
NewDir2 = filename:join(RootDir,
atom_to_list(?MODULE)
++"_mk-dir-noexist/foo"),
{error, enoent} = ?FILE_MODULE:make_dir(NewDir2),
%% a nameless directory
{error, enoent} = ?FILE_MODULE:make_dir(""),
%% a directory with illegal name
{error, badarg} = ?FILE_MODULE:make_dir({1,2,3}),
%% a directory with illegal name, even if it's a (bad) list
{error, badarg} = ?FILE_MODULE:make_dir([1,2,3,{}]),
%% Maybe this isn't an error, exactly, but worth mentioning anyway:
%% ok = ?FILE_MODULE:make_dir([$f,$o,$o,0,$b,$a,$r])),
%% The above line works, and created a directory "./foo"
%% More elegant would maybe have been to fail, or to really create
%% a directory, but with a name that incorporates the "bar" part of
%% the list, so that [$f,$o,$o,0,$f,$o,$o] wouldn't refer to the same
%% dir. But this would slow it down.
%% Try deleting some bad directories
%% Deleting the parent directory to the current, sounds dangerous, huh?
%% Don't worry ;-) the parent directory should never be empty, right?
case ?FILE_MODULE:del_dir('..') of
{error, eexist} -> ok;
{error, eacces} -> ok; %OpenBSD
{error, einval} -> ok %FreeBSD
end,
{error, enoent} = ?FILE_MODULE:del_dir(""),
{error, badarg} = ?FILE_MODULE:del_dir([3,2,1,{}]),
[] = flush()
after
?FILE_MODULE:set_cwd(CurrentDir)
end,
ok.
cur_dir_0(Config) when is_list(Config) ->
%% Find out the current dir, and cd to it ;-)
{ok,BaseDir} = ?FILE_MODULE:get_cwd(),
Dir1 = BaseDir ++ "", %% Check that it's a string
ok = ?FILE_MODULE:set_cwd(Dir1),
%% Make a new dir, and cd to that
RootDir = proplists:get_value(priv_dir,Config),
NewDir = filename:join(RootDir,
atom_to_list(?MODULE)
++"_curdir"),
ok = ?FILE_MODULE:make_dir(NewDir),
case {os:type(), length(NewDir) >= 260} of
{{win32,_}, true} ->
io:format("Skip set_cwd for windows path longer than 260 (MAX_PATH):\n"),
io:format("\nNewDir = ~p\n", [NewDir]);
_ ->
io:format("cd to ~s",[NewDir]),
ok = ?FILE_MODULE:set_cwd(NewDir),
%% Create a file in the new current directory, and check that it
%% really is created there
UncommonName = "uncommon.fil",
{ok,Fd} = ?FILE_MODULE:open(UncommonName,read_write),
ok = ?FILE_MODULE:close(Fd),
{ok,NewDirFiles} = ?FILE_MODULE:list_dir("."),
true = lists:member(UncommonName,NewDirFiles),
%% Ensure that we get the same result with a trailing slash; the
%% APIs used on Windows will choke on them if passed directly.
{ok,NewDirFiles} = ?FILE_MODULE:list_dir("./"),
%% Delete the directory and return to the old current directory
%% and check that the created file isn't there (too!)
expect({error, einval}, {error, eacces},
?FILE_MODULE:del_dir(NewDir)),
?FILE_MODULE:delete(UncommonName),
{ok,[]} = ?FILE_MODULE:list_dir("."),
ok = ?FILE_MODULE:set_cwd(Dir1),
io:format("cd back to ~s",[Dir1]),
ok = ?FILE_MODULE:del_dir(NewDir),
{error, enoent} = ?FILE_MODULE:set_cwd(NewDir),
ok = ?FILE_MODULE:set_cwd(Dir1),
io:format("cd back to ~s",[Dir1]),
{ok,OldDirFiles} = ?FILE_MODULE:list_dir("."),
false = lists:member(UncommonName,OldDirFiles)
end,
%% Try doing some bad things
{error, badarg} = ?FILE_MODULE:set_cwd({foo,bar}),
{error, enoent} = ?FILE_MODULE:set_cwd(""),
{error, enoent} = ?FILE_MODULE:set_cwd(".......a......"),
{ok,BaseDir} = ?FILE_MODULE:get_cwd(), %% Still there?
%% On Windows, there should only be slashes, no backslashes,
%% in the return value of get_cwd().
%% (The test is harmless on Unix, because filenames usually
%% don't contain backslashes.)
{ok, BaseDir} = ?FILE_MODULE:get_cwd(),
false = lists:member($\\, BaseDir),
[] = flush(),
ok.
%% Tests ?FILE_MODULE:get_cwd/1.
cur_dir_1(Config) when is_list(Config) ->
case os:type() of
{win32, _} ->
win_cur_dir_1(Config);
_ ->
{error, enotsup} = ?FILE_MODULE:get_cwd("d:")
end,
[] = flush(),
ok.
win_cur_dir_1(_Config) ->
{ok,BaseDir} = ?FILE_MODULE:get_cwd(),
%% Get the drive letter from the current directory,
%% and try to get current directory for that drive.
[CurDrive,$:|_] = BaseDir,
{ok,BaseDir} = ?FILE_MODULE:get_cwd([CurDrive,$:]),
io:format("BaseDir = ~s\n", [BaseDir]),
%% We should error out on non-existent drives. Any reasonable system will
%% have at least one.
CurDirs = [?FILE_MODULE:get_cwd([Drive,$:]) || Drive <- lists:seq($A, $Z)],
lists:member({error,eaccess}, CurDirs),
%% Unfortunately, there is no way to move away from the
%% current drive as we can't use the "subst" command from
%% a SSH connection. We can't test any more.
ok.
%%%
%%% Test list_dir() on a non-existing pathname.
%%%
list_dir_error(Config) ->
Priv = proplists:get_value(priv_dir, Config),
NonExisting = filename:join(Priv, "non-existing-dir"),
{error,enoent} = ?FILE_MODULE:list_dir(NonExisting),
ok.
%%%
%%% Test list_dir() and list_dir_all().
%%%
list_dir(Config) ->
RootDir = proplists:get_value(priv_dir, Config),
TestDir = filename:join(RootDir, ?MODULE_STRING++"_list_dir"),
?FILE_MODULE:make_dir(TestDir),
list_dir_1(TestDir, 42, []).
list_dir_1(TestDir, 0, Sorted) ->
[ok = ?FILE_MODULE:delete(filename:join(TestDir, F)) ||
F <- Sorted],
ok = ?FILE_MODULE:del_dir(TestDir);
list_dir_1(TestDir, Cnt, Sorted0) ->
Base = "file" ++ integer_to_list(Cnt),
Name = filename:join(TestDir, Base),
ok = ?FILE_MODULE:write_file(Name, Base),
Sorted = lists:merge([Base], Sorted0),
{ok,DirList0} = ?FILE_MODULE:list_dir(TestDir),
{ok,DirList1} = ?FILE_MODULE:list_dir_all(TestDir),
Sorted = lists:sort(DirList0),
Sorted = lists:sort(DirList1),
list_dir_1(TestDir, Cnt-1, Sorted).
untranslatable_names(Config) ->
case no_untranslatable_names() of
true ->
{skip,"Not a problem on this OS"};
false ->
untranslatable_names_1(Config)
end.
untranslatable_names_1(Config) ->
{ok,OldCwd} = file:get_cwd(),
PrivDir = proplists:get_value(priv_dir, Config),
Dir = filename:join(PrivDir, "untranslatable_names"),
ok = file:make_dir(Dir),
Node = start_node(untranslatable_names, "+fnu"),
try
ok = file:set_cwd(Dir),
[ok = file:write_file(F, F) || {_,F} <- untranslatable_names()],
ExpectedListDir0 = [unicode:characters_to_list(N, utf8) ||
{utf8,N} <- untranslatable_names()],
ExpectedListDir = lists:sort(ExpectedListDir0),
io:format("ExpectedListDir: ~p\n", [ExpectedListDir]),
ExpectedListDir = call_and_sort(Node, file, list_dir, [Dir]),
ExpectedListDirAll0 = [case Enc of
utf8 ->
unicode:characters_to_list(N, utf8);
latin1 ->
N
end || {Enc,N} <- untranslatable_names()],
ExpectedListDirAll = lists:sort(ExpectedListDirAll0),
io:format("ExpectedListDirAll: ~p\n", [ExpectedListDirAll]),
ExpectedListDirAll = call_and_sort(Node, file, list_dir_all, [Dir])
after
catch test_server:stop_node(Node),
file:set_cwd(OldCwd),
[file:delete(F) || {_,F} <- untranslatable_names()],
file:del_dir(Dir)
end,
ok.
untranslatable_names_error(Config) ->
case no_untranslatable_names() of
true ->
{skip,"Not a problem on this OS"};
false ->
untranslatable_names_error_1(Config)
end.
untranslatable_names_error_1(Config) ->
{ok,OldCwd} = file:get_cwd(),
PrivDir = proplists:get_value(priv_dir, Config),
Dir = filename:join(PrivDir, "untranslatable_names_error"),
ok = file:make_dir(Dir),
Node = start_node(untranslatable_names, "+fnue"),
try
ok = file:set_cwd(Dir),
[ok = file:write_file(F, F) || {_,F} <- untranslatable_names()],
ExpectedListDir0 = [unicode:characters_to_list(N, utf8) ||
{utf8,N} <- untranslatable_names()],
ExpectedListDir = lists:sort(ExpectedListDir0),
io:format("ExpectedListDir: ~p\n", [ExpectedListDir]),
{error,{no_translation,BadFile}} =
rpc:call(Node, file, list_dir, [Dir]),
true = lists:keymember(BadFile, 2, untranslatable_names())
after
catch test_server:stop_node(Node),
file:set_cwd(OldCwd),
[file:delete(F) || {_,F} <- untranslatable_names()],
file:del_dir(Dir)
end,
ok.
untranslatable_names() ->
[{utf8,<<"abc">>},
{utf8,<<"def">>},
{utf8,<<"Lagerl",195,182,"f">>},
{utf8,<<195,150,"stra Emterwik">>},
{latin1,<<"M",229,"rbacka">>},
{latin1,<<"V",228,"rmland">>}].
call_and_sort(Node, M, F, A) ->
{ok,Res} = rpc:call(Node, M, F, A),
lists:sort(Res).
no_untranslatable_names() ->
case os:type() of
{unix,darwin} -> true;
{win32,_} -> true;
_ -> false
end.
start_node(Name, Args) ->
[_,Host] = string:lexemes(atom_to_list(node()), "@"),
ct:log("Trying to start ~w@~s~n", [Name,Host]),
case test_server:start_node(Name, peer, [{args,Args}]) of
{error,Reason} ->
ct:fail(Reason);
{ok,Node} ->
ct:log("Node ~p started~n", [Node]),
Node
end.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
open1(Config) when is_list(Config) ->
RootDir = proplists:get_value(priv_dir,Config),
NewDir = filename:join(RootDir,
atom_to_list(?MODULE)
++"_files"),
ok = ?FILE_MODULE:make_dir(NewDir),
Name = filename:join(NewDir, "foo1.fil"),
{ok,Fd1} = ?FILE_MODULE:open(Name,read_write),
{ok,Fd2} = ?FILE_MODULE:open(Name,read),
Str = "{a,tuple}.\n",
io:format(Fd1,Str,[]),
{ok,0} = ?FILE_MODULE:position(Fd1,bof),
Str = io:get_line(Fd1,''),
Str = io:get_line(Fd2,''),
ok = ?FILE_MODULE:close(Fd2),
{ok,0} = ?FILE_MODULE:position(Fd1,bof),
ok = ?FILE_MODULE:truncate(Fd1),
eof = io:get_line(Fd1,''),
ok = ?FILE_MODULE:close(Fd1),
{ok,Fd3} = ?FILE_MODULE:open(Name,read),
eof = io:get_line(Fd3,''),
ok = ?FILE_MODULE:close(Fd3),
[] = flush(),
ok.
%% Tests all open modes.
old_modes(Config) when is_list(Config) ->
RootDir = proplists:get_value(priv_dir, Config),
NewDir = filename:join(RootDir,
atom_to_list(?MODULE)
++"_old_open_modes"),
ok = ?FILE_MODULE:make_dir(NewDir),
Name1 = filename:join(NewDir, "foo1.fil"),
Marker = "hello, world",
%% write
{ok, Fd1} = ?FILE_MODULE:open(Name1, write),
ok = io:write(Fd1, Marker),
ok = io:put_chars(Fd1, ".\n"),
ok = ?FILE_MODULE:close(Fd1),
%% read
{ok, Fd2} = ?FILE_MODULE:open(Name1, read),
{ok, Marker} = io:read(Fd2, prompt),
ok = ?FILE_MODULE:close(Fd2),
%% read_write
{ok, Fd3} = ?FILE_MODULE:open(Name1, read_write),
{ok, Marker} = io:read(Fd3, prompt),
ok = io:write(Fd3, Marker),
ok = ?FILE_MODULE:close(Fd3),
[] = flush(),
ok.
new_modes(Config) when is_list(Config) ->
RootDir = proplists:get_value(priv_dir, Config),
NewDir = filename:join(RootDir,
atom_to_list(?MODULE)
++"_new_open_modes"),
ok = ?FILE_MODULE:make_dir(NewDir),
Name1 = filename:join(NewDir, "foo1.fil"),
Marker = "hello, world",
%% write
{ok, Fd1} = ?FILE_MODULE:open(Name1, [write]),
ok = io:write(Fd1, Marker),
ok = io:put_chars(Fd1, ".\n"),
ok = ?FILE_MODULE:close(Fd1),
%% read
{ok, Fd2} = ?FILE_MODULE:open(Name1, [read]),
{ok, Marker} = io:read(Fd2, prompt),
ok = ?FILE_MODULE:close(Fd2),
%% read and write
{ok, Fd3} = ?FILE_MODULE:open(Name1, [read, write]),
{ok, Marker} = io:read(Fd3, prompt),
ok = io:write(Fd3, Marker),
ok = ?FILE_MODULE:close(Fd3),
%% read by default
{ok, Fd4} = ?FILE_MODULE:open(Name1, []),
{ok, Marker} = io:read(Fd4, prompt),
ok = ?FILE_MODULE:close(Fd4),
%% read and binary
{ok, Fd5} = ?FILE_MODULE:open(Name1, [read, binary]),
{ok, Marker} = io:read(Fd5, prompt),
ok = ?FILE_MODULE:close(Fd5),
%% read, raw
{ok, Fd6} = ?FILE_MODULE:open(Name1, [read, raw]),
{ok, [$\[]} = ?FILE_MODULE:read(Fd6, 1),
ok = ?FILE_MODULE:close(Fd6),
%% write and sync
case ?FILE_MODULE:open(Name1, [write, sync]) of
{ok, Fd7} ->
ok = io:write(Fd7, Marker),
ok = io:put_chars(Fd7, ".\n"),
ok = ?FILE_MODULE:close(Fd7),
{ok, Fd8} = ?FILE_MODULE:open(Name1, [read]),
{ok, Marker} = io:read(Fd8, prompt),
ok = ?FILE_MODULE:close(Fd8);
{error, enotsup} ->
%% for platforms that don't support the sync option
ok
end,
[] = flush(),
ok.
path_open(Config) when is_list(Config) ->
RootDir = proplists:get_value(priv_dir,Config),
NewDir = filename:join(RootDir,
atom_to_list(?MODULE)
++"_path_open"),
ok = ?FILE_MODULE:make_dir(NewDir),
FileName = "path_open.fil",
Name = filename:join(RootDir, FileName),
{ok,Fd1,_FullName1} =
?FILE_MODULE:path_open(
[RootDir,
"nosuch1",
NewDir],FileName,write),
io:format(Fd1,"ABCDEFGH",[]),
ok = ?FILE_MODULE:close(Fd1),
%% locate it in the last dir
{ok,Fd2,_FullName2} =
?FILE_MODULE:path_open(
["nosuch1",
NewDir,
RootDir],FileName,read),
{ok,2} =
?FILE_MODULE:position(Fd2,2), "C" = io:get_chars(Fd2,'',1),
ok = ?FILE_MODULE:close(Fd2),
%% Try a failing path
{error, enoent} = ?FILE_MODULE:path_open(
["nosuch1",
NewDir],FileName,read),
%% Check that it's found regardless of path, if an absolute name given
{ok,Fd3,_FullPath3} =
?FILE_MODULE:path_open(
["nosuch1",
NewDir],Name,read),
{ok,2} =
?FILE_MODULE:position(Fd3,2), "C" = io:get_chars(Fd3,'',1),
ok = ?FILE_MODULE:close(Fd3),
[] = flush(),
ok.
close(Config) when is_list(Config) ->
RootDir = proplists:get_value(priv_dir,Config),
Name = filename:join(RootDir,
atom_to_list(?MODULE)
++"_close.fil"),
{ok,Fd1} = ?FILE_MODULE:open(Name,read_write),
%% Just closing it is no fun, we did that a million times already
%% This is a common error, for code written before Erlang 4.3
%% bacause then ?FILE_MODULE:open just returned a Pid, and not everyone
%% really checked what they got.
{'EXIT',_Msg} = (catch ok = ?FILE_MODULE:close({ok,Fd1})),
ok = ?FILE_MODULE:close(Fd1),
%% Try closing one more time
Val = ?FILE_MODULE:close(Fd1),
io:format("Second close gave: ~p",[Val]),
%% All operations on a closed raw file should EINVAL, even if they're not
%% supported on the current platform.
{ok,Fd2} = ?FILE_MODULE:open(Name, [read, write, raw]),
ok = ?FILE_MODULE:close(Fd2),
{error, einval} = ?FILE_MODULE:advise(Fd2, 5, 5, normal),
{error, einval} = ?FILE_MODULE:allocate(Fd2, 5, 5),
{error, einval} = ?FILE_MODULE:close(Fd2),
{error, einval} = ?FILE_MODULE:datasync(Fd2),
{error, einval} = ?FILE_MODULE:position(Fd2, 5),
{error, einval} = ?FILE_MODULE:pread(Fd2, 5, 1),
{error, einval} = ?FILE_MODULE:pwrite(Fd2, 5, "einval please"),
{error, einval} = ?FILE_MODULE:read(Fd2, 1),
{error, einval} = ?FILE_MODULE:sync(Fd2),
{error, einval} = ?FILE_MODULE:truncate(Fd2),
{error, einval} = ?FILE_MODULE:write(Fd2, "einval please"),
[] = flush(),
ok.
access(Config) when is_list(Config) ->
RootDir = proplists:get_value(priv_dir,Config),
Name = filename:join(RootDir,
atom_to_list(?MODULE)
++"_access.fil"),
Str = "ABCDEFGH",
{ok,Fd1} = ?FILE_MODULE:open(Name,write),
io:format(Fd1,Str,[]),
ok = ?FILE_MODULE:close(Fd1),
%% Check that we can't write when in read only mode
{ok,Fd2} = ?FILE_MODULE:open(Name,read),
case catch io:format(Fd2,"XXXX",[]) of
ok ->
ct:fail({format,write});
_ ->
ok
end,
ok = ?FILE_MODULE:close(Fd2),
{ok,Fd3} = ?FILE_MODULE:open(Name,read),
Str = io:get_line(Fd3,''),
ok = ?FILE_MODULE:close(Fd3),
[] = flush(),
ok.
%% Tests ?FILE_MODULE:read/2 and ?FILE_MODULE:write/2.
read_write(Config) when is_list(Config) ->
RootDir = proplists:get_value(priv_dir, Config),
NewDir = filename:join(RootDir,
atom_to_list(?MODULE)
++"_read_write"),
ok = ?FILE_MODULE:make_dir(NewDir),
Marker = "hello, world",
MarkerB = list_to_binary(Marker),
%% Plain file.
Name1 = filename:join(NewDir, "plain.fil"),
{ok, Fd1} = ?FILE_MODULE:open(Name1, [read, write]),
read_write_test(Fd1, Marker, []),
%% Raw file.
Name2 = filename:join(NewDir, "raw.fil"),
{ok, Fd2} = ?FILE_MODULE:open(Name2, [read, write, raw]),
read_write_test(Fd2, Marker, []),
%% Plain binary file.
Name3 = filename:join(NewDir, "plain-b.fil"),
{ok, Fd3} = ?FILE_MODULE:open(Name3, [read, write, binary]),
read_write_test(Fd3, MarkerB, <<>>),
%% Raw binary file.
Name4 = filename:join(NewDir, "raw-b.fil"),
{ok, Fd4} = ?FILE_MODULE:open(Name4, [read, write, raw, binary]),
read_write_test(Fd4, MarkerB, <<>>),
ok.
read_write_test(File, Marker, Empty) ->
ok = ?FILE_MODULE:write(File, Marker),
{ok, 0} = ?FILE_MODULE:position(File, 0),
{ok, Empty} = ?FILE_MODULE:read(File, 0),
{ok, Marker} = ?FILE_MODULE:read(File, 100),
eof = ?FILE_MODULE:read(File, 100),
{ok, Empty} = ?FILE_MODULE:read(File, 0),
ok = ?FILE_MODULE:close(File),
[] = flush(),
ok.
%% Tests ?FILE_MODULE:pread/2 and ?FILE_MODULE:pwrite/2.
pread_write(Config) when is_list(Config) ->
RootDir = proplists:get_value(priv_dir, Config),
NewDir = filename:join(RootDir,
atom_to_list(?MODULE)
++"_pread_write"),
ok = ?FILE_MODULE:make_dir(NewDir),
List = "hello, world",
Bin = list_to_binary(List),
%% Plain file.
Name1 = filename:join(NewDir, "plain.fil"),
{ok, Fd1} = ?FILE_MODULE:open(Name1, [read, write]),
pread_write_test(Fd1, List),
%% Raw file.
Name2 = filename:join(NewDir, "raw.fil"),
{ok, Fd2} = ?FILE_MODULE:open(Name2, [read, write, raw]),
pread_write_test(Fd2, List),
%% Plain file. Binary mode.
Name3 = filename:join(NewDir, "plain-binary.fil"),
{ok, Fd3} = ?FILE_MODULE:open(Name3, [binary, read, write]),
pread_write_test(Fd3, Bin),
%% Raw file. Binary mode.
Name4 = filename:join(NewDir, "raw-binary.fil"),
{ok, Fd4} = ?FILE_MODULE:open(Name4, [binary, read, write, raw]),
pread_write_test(Fd4, Bin),
ok.
pread_write_test(File, Data) ->
io:format("~p:pread_write_test(~p,~p)~n", [?MODULE, File, Data]),
Size = if is_binary(Data) -> byte_size(Data);
is_list(Data) -> length(Data)
end,
I = Size + 17,
ok = ?FILE_MODULE:pwrite(File, 0, Data),
{ok, Data} = ?FILE_MODULE:pread(File, 0, I),
{ok, [Data]} = ?FILE_MODULE:pread(File, [{0, I}]),
eof = ?FILE_MODULE:pread(File, I, 1),
ok = ?FILE_MODULE:pwrite(File, [{0, Data}, {I, Data}]),
{ok, [Data, eof, Data]} =
?FILE_MODULE:pread(File, [{0, Size}, {2*I, 1}, {I, Size}]),
Plist = lists:seq(21*I, 0, -I),
Pwrite = lists:map(fun(P)->{P,Data}end, Plist),
Pread = [{22*I,Size} | lists:map(fun(P)->{P,Size}end, Plist)],
Presult = [eof | lists:map(fun(_)->Data end, Plist)],
ok = ?FILE_MODULE:pwrite(File, Pwrite),
{ok, Presult} = ?FILE_MODULE:pread(File, Pread),
ok = ?FILE_MODULE:close(File),
[] = flush(),
ok.
%% Test appending to a file.
append(Config) when is_list(Config) ->
RootDir = proplists:get_value(priv_dir, Config),
NewDir = filename:join(RootDir,
atom_to_list(?MODULE)
++"_append"),
ok = ?FILE_MODULE:make_dir(NewDir),
First = "First line\n",
Second = "Seond lines comes here\n",
Third = "And here is the third line\n",
%% Write a small text file.
Name1 = filename:join(NewDir, "a_file.txt"),
{ok, Fd1} = ?FILE_MODULE:open(Name1, [write]),
ok = io:format(Fd1, First, []),
ok = io:format(Fd1, Second, []),
ok = ?FILE_MODULE:close(Fd1),
%% Open it a again and a append a line to it.
{ok, Fd2} = ?FILE_MODULE:open(Name1, [append]),
ok = io:format(Fd2, Third, []),
ok = ?FILE_MODULE:close(Fd2),
%% Read it back and verify.
Expected = list_to_binary([First, Second, Third]),
{ok, Expected} = ?FILE_MODULE:read_file(Name1),
[] = flush(),
ok.
open_errors(Config) when is_list(Config) ->
DataDir =
filename:dirname(
filename:join(proplists:get_value(data_dir, Config), "x")),
DataDirSlash = DataDir++"/",
{error, E1} = ?FILE_MODULE:open(DataDir, [read]),
{error, E2} = ?FILE_MODULE:open(DataDirSlash, [read]),
{error, E3} = ?FILE_MODULE:open(DataDir, [write]),
{error, E4} = ?FILE_MODULE:open(DataDirSlash, [write]),
{eisdir,eisdir,eisdir,eisdir} = {E1,E2,E3,E4},
[] = flush(),
ok.
%% Test exclusive access to a file.
exclusive(Config) when is_list(Config) ->
RootDir = proplists:get_value(priv_dir,Config),
NewDir = filename:join(RootDir,
atom_to_list(?MODULE)
++"_exclusive"),
ok = ?FILE_MODULE:make_dir(NewDir),
Name = filename:join(NewDir, "ex_file.txt"),
{ok, Fd} = ?FILE_MODULE:open(Name, [write, exclusive]),
{error, eexist} = ?FILE_MODULE:open(Name, [write, exclusive]),
ok = ?FILE_MODULE:close(Fd),
ok.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
pos1(Config) when is_list(Config) ->
RootDir = proplists:get_value(priv_dir,Config),
Name = filename:join(RootDir,
atom_to_list(?MODULE)
++"_pos1.fil"),
{ok,Fd1} = ?FILE_MODULE:open(Name,write),
io:format(Fd1,"ABCDEFGH",[]),
ok = ?FILE_MODULE:close(Fd1),
{ok,Fd2} = ?FILE_MODULE:open(Name,read),
%% Start pos is first char
io:format("Relative positions"),
"A" = io:get_chars(Fd2,'',1),
{ok,2} = ?FILE_MODULE:position(Fd2,{cur,1}),
"C" = io:get_chars(Fd2,'',1),
{ok,0} = ?FILE_MODULE:position(Fd2,{cur,-3}),
"A" = io:get_chars(Fd2,'',1),
%% Backwards from first char should be an error
{ok,0} = ?FILE_MODULE:position(Fd2,{cur,-1}),
{error, einval} = ?FILE_MODULE:position(Fd2,{cur,-1}),
%% Reset position and move again
{ok,0} = ?FILE_MODULE:position(Fd2,0),
{ok,2} = ?FILE_MODULE:position(Fd2,{cur,2}),
"C" = io:get_chars(Fd2,'',1),
%% Go a lot forwards
{ok,13} = ?FILE_MODULE:position(Fd2,{cur,10}),
eof = io:get_chars(Fd2,'',1),
%% Try some fixed positions
io:format("Fixed positions"),
{ok,8} =
?FILE_MODULE:position(Fd2,8), eof = io:get_chars(Fd2,'',1),
{ok,8} =
?FILE_MODULE:position(Fd2,cur), eof = io:get_chars(Fd2,'',1),
{ok,7} =
?FILE_MODULE:position(Fd2,7), "H" = io:get_chars(Fd2,'',1),
{ok,0} =
?FILE_MODULE:position(Fd2,0), "A" = io:get_chars(Fd2,'',1),
{ok,3} =
?FILE_MODULE:position(Fd2,3), "D" = io:get_chars(Fd2,'',1),
{ok,12} =
?FILE_MODULE:position(Fd2,12), eof = io:get_chars(Fd2,'',1),
{ok,3} =
?FILE_MODULE:position(Fd2,3), "D" = io:get_chars(Fd2,'',1),
%% Try the {bof,X} notation
{ok,3} = ?FILE_MODULE:position(Fd2,{bof,3}),
"D" = io:get_chars(Fd2,'',1),
%% Try eof positions
io:format("EOF positions"),
{ok,8} =
?FILE_MODULE:position(Fd2,{eof,0}), eof=io:get_chars(Fd2,'',1),
{ok,7} =
?FILE_MODULE:position(Fd2,{eof,-1}),
"H" = io:get_chars(Fd2,'',1),
{ok,0} =
?FILE_MODULE:position(Fd2,{eof,-8}), "A"=io:get_chars(Fd2,'',1),
{error, einval} = ?FILE_MODULE:position(Fd2,{eof,-9}),
[] = flush(),
ok.
pos2(Config) when is_list(Config) ->
RootDir = proplists:get_value(priv_dir,Config),
Name = filename:join(RootDir,
atom_to_list(?MODULE)
++"_pos2.fil"),
{ok,Fd1} = ?FILE_MODULE:open(Name,write),
io:format(Fd1,"ABCDEFGH",[]),
ok = ?FILE_MODULE:close(Fd1),
{ok,Fd2} = ?FILE_MODULE:open(Name,read),
{error, einval} = ?FILE_MODULE:position(Fd2,-1),
%% Make sure that we still can search after an error.
{ok,0} = ?FILE_MODULE:position(Fd2, 0),
{ok,3} = ?FILE_MODULE:position(Fd2, {bof,3}),
"D" = io:get_chars(Fd2,'',1),
[] = flush(),
io:format("DONE"),
ok.
%% When it does not use raw mode, file:position had a bug.
pos3(Config) when is_list(Config) ->
RootDir = proplists:get_value(data_dir, Config),
Name = filename:join(RootDir, "realmen.html.gz"),
{ok, Fd} = ?FILE_MODULE:open(Name, [read, binary]),
{ok, _} = ?FILE_MODULE:read(Fd, 5),
{error, einval} = ?FILE_MODULE:position(Fd, {bof, -1}),
%% Here ok had returned =(
{error, einval} = ?FILE_MODULE:position(Fd, {cur, -10}),
%% That test is actually questionable since file:position/2
%% is documented to leave the file position undefined after
%% it has returned an error. But on Posix systems the position
%% is guaranteed to be unchanged after an error return. On e.g
%% Windows there is nothing stated about this in the documentation.
ok.
file_info_basic_file(Config) when is_list(Config) ->
RootDir = proplists:get_value(priv_dir, Config),
%% Create a short file.
Name = filename:join(RootDir,
atom_to_list(?MODULE)
++"_basic_test.fil"),
{ok,Fd1} = ?FILE_MODULE:open(Name, write),
io:put_chars(Fd1, "foo bar"),
ok = ?FILE_MODULE:close(Fd1),
%% Test that the file has the expected attributes.
%% The times are tricky, so we will save them to a separate test case.
{ok,FileInfo} = ?FILE_MODULE:read_file_info(Name),
{ok,FileInfo} = ?FILE_MODULE:read_file_info(Name, [raw]),
#file_info{size=Size,type=Type,access=Access,
atime=AccessTime,mtime=ModifyTime} = FileInfo,
io:format("Access ~p, Modify ~p", [AccessTime, ModifyTime]),
Size = 7,
Type = regular,
read_write = Access,
true = abs(time_dist(filter_atime(AccessTime, Config),
filter_atime(ModifyTime,
Config))) < 2,
all_integers(tuple_to_list(AccessTime) ++ tuple_to_list(ModifyTime)),
[] = flush(),
ok.
file_info_basic_directory(Config) when is_list(Config) ->
%% Note: filename:join/1 removes any trailing slash,
%% which is essential for ?FILE_MODULE:file_info/1 to work on
%% platforms such as Windows95.
RootDir = filename:join([proplists:get_value(priv_dir, Config)]),
%% Test that the RootDir directory has the expected attributes.
test_directory(RootDir, read_write),
%% Note that on Windows file systems,
%% "/" or "c:/" are *NOT* directories.
%% Therefore, test that ?FILE_MODULE:file_info/1 behaves as if they were
%% directories.
case os:type() of
{win32, _} ->
test_directory("/", read_write),
test_directory("c:/", read_write),
test_directory("c:\\", read_write);
_ ->
test_directory("/", read)
end,
ok.
test_directory(Name, ExpectedAccess) ->
{ok,FileInfo} = ?FILE_MODULE:read_file_info(Name),
{ok,FileInfo} = ?FILE_MODULE:read_file_info(Name, [raw]),
#file_info{size=Size,type=Type,access=Access,
atime=AccessTime,mtime=ModifyTime} = FileInfo,
io:format("Testing directory ~s", [Name]),
io:format("Directory size is ~p", [Size]),
io:format("Access ~p", [Access]),
io:format("Access time ~p; Modify time~p",
[AccessTime, ModifyTime]),
Type = directory,
Access = ExpectedAccess,
all_integers(tuple_to_list(AccessTime) ++ tuple_to_list(ModifyTime)),
[] = flush(),
ok.
all_integers([{A,B,C}|T]) ->
all_integers([A,B,C|T]);
all_integers([Int|Rest]) when is_integer(Int) ->
all_integers(Rest);
all_integers([]) -> ok.
%% Try something nonexistent.
file_info_bad(Config) when is_list(Config) ->
RootDir = filename:join([proplists:get_value(priv_dir, Config)]),
FileName = filename:join(RootDir, atom_to_list(?MODULE) ++ "_nonexistent"),
{error,enoent} = ?FILE_MODULE:read_file_info(FileName),
{error,enoent} = ?FILE_MODULE:read_file_info(FileName, [raw]),
{error, enoent} = ?FILE_MODULE:read_file_info(""),
{error, enoent} = ?FILE_MODULE:read_file_info("", [raw]),
[] = flush(),
ok.
%% Test that the file times behave as they should.
file_info_times(Config) when is_list(Config) ->
%% We have to try this twice, since if the test runs across the change
%% of a month the time diff calculations will fail. But it won't happen
%% if you run it twice in succession.
test_server:m_out_of_n(
1,2,
fun() -> file_info_int(Config) end),
ok.
file_info_int(Config) ->
%% Note: filename:join/1 removes any trailing slash,
%% which is essential for ?FILE_MODULE:file_info/1 to work on
%% platforms such as Windows95.
RootDir = filename:join([proplists:get_value(priv_dir, Config)]),
io:format("RootDir = ~p", [RootDir]),
Name = filename:join(RootDir,
atom_to_list(?MODULE)
++"_file_info.fil"),
{ok,Fd1} = ?FILE_MODULE:open(Name,write),
io:put_chars(Fd1,"foo"),
%% check that the file got a modify date max a few seconds away from now
{ok,FileInfo1} = ?FILE_MODULE:read_file_info(Name),
{ok,FileInfo1Raw} = ?FILE_MODULE:read_file_info(Name, [raw]),
%% We assert that everything but the size is the same, on some OSs the
%% size may not have been flushed to disc and we do not want to do a
%% sync to force it.
FileInfo1Raw = FileInfo1#file_info{ size = FileInfo1Raw#file_info.size },
#file_info{type=regular,atime=AccTime1,mtime=ModTime1} = FileInfo1,
Now = erlang:localtime(), %???
io:format("Now ~p",[Now]),
io:format("Open file Acc ~p Mod ~p",[AccTime1,ModTime1]),
true = abs(time_dist(filter_atime(Now, Config),
filter_atime(AccTime1,
Config))) < 8,
true = abs(time_dist(Now,ModTime1)) < 8,
%% Sleep until we can be sure the seconds value has changed.
%% Note: FAT-based filesystem (like on Windows 95) have
%% a resolution of 2 seconds.
timer:sleep(2200),
%% close the file, and watch the modify date change
ok = ?FILE_MODULE:close(Fd1),
{ok,FileInfo2} = ?FILE_MODULE:read_file_info(Name),
{ok,FileInfo2} = ?FILE_MODULE:read_file_info(Name, [raw]),
#file_info{size=Size,type=regular,access=Access,
atime=AccTime2,mtime=ModTime2} = FileInfo2,
io:format("Closed file Acc ~p Mod ~p",[AccTime2,ModTime2]),
true = time_dist(ModTime1,ModTime2) >= 0,
%% this file is supposed to be binary, so it'd better keep it's size
Size = 3,
Access = read_write,
%% Do some directory checking
{ok,FileInfo3} = ?FILE_MODULE:read_file_info(RootDir),
{ok,FileInfo3} = ?FILE_MODULE:read_file_info(RootDir, [raw]),
#file_info{size=DSize,type=directory,access=DAccess,
atime=AccTime3,mtime=ModTime3} = FileInfo3,
%% this dir was modified only a few secs ago
io:format("Dir Acc ~p; Mod ~p; Now ~p", [AccTime3, ModTime3, Now]),
true = abs(time_dist(Now,ModTime3)) < 5,
DAccess = read_write,
io:format("Dir size is ~p",[DSize]),
[] = flush(),
ok.
%% Filter access times, to copy with a deficiency of FAT file systems
%% (on Windows): The access time is actually only a date.
filter_atime(Atime, Config) ->
case lists:member(no_access_time, Config) of
true ->
case Atime of
{Date, _} ->
{Date, {0, 0, 0}};
{Y, M, D, _, _, _} ->
{Y, M, D, 0, 0, 0}
end;
false ->
Atime
end.
%% Test the write_file_info/2 function.
file_write_file_info(Config) when is_list(Config) ->
RootDir = get_good_directory(Config),
io:format("RootDir = ~p", [RootDir]),
%% Set the file to read only AND update the file times at the same time.
%% (This used to fail on Windows NT/95 for a local filesystem.)
%% Note: Seconds must be even; see note in file_info_times/1.
Name1 = filename:join(RootDir,
atom_to_list(?MODULE)
++"_write_file_info_ro"),
ok = ?FILE_MODULE:write_file(Name1, "hello"),
Time = {{1997, 01, 02}, {12, 35, 42}},
Info = #file_info{mode=8#400, atime=Time, mtime=Time, ctime=Time},
ok = ?FILE_MODULE:write_file_info(Name1, Info),
%% Read back the times.
{ok, ActualInfo} = ?FILE_MODULE:read_file_info(Name1),
#file_info{mode=_Mode, atime=ActAtime, mtime=Time,
ctime=ActCtime} = ActualInfo,
FilteredAtime = filter_atime(Time, Config),
FilteredAtime = filter_atime(ActAtime, Config),
case os:type() of
{win32, _} ->
%% On Windows, "ctime" means creation time and it can
%% be set.
ActCtime = Time;
_ ->
ok
end,
{error, eacces} = ?FILE_MODULE:write_file(Name1, "hello again"),
%% Make the file writable again.
?FILE_MODULE:write_file_info(Name1, #file_info{mode=8#600}),
ok = ?FILE_MODULE:write_file(Name1, "hello again"),
%% And unwritable.
?FILE_MODULE:write_file_info(Name1, #file_info{mode=8#400}),
{error, eacces} = ?FILE_MODULE:write_file(Name1, "hello again"),
%% Same with raw.
?FILE_MODULE:write_file_info(Name1, #file_info{mode=8#600}, [raw]),
ok = ?FILE_MODULE:write_file(Name1, "hello again"),
?FILE_MODULE:write_file_info(Name1, #file_info{mode=8#400}, [raw]),
{error,eacces} = ?FILE_MODULE:write_file(Name1, "hello again"),
%% Write the times again.
%% Note: Seconds must be even; see note in file_info_times/1.
NewTime = {{1997, 02, 15}, {13, 18, 20}},
NewInfo = #file_info{atime=NewTime, mtime=NewTime, ctime=NewTime},
ok = ?FILE_MODULE:write_file_info(Name1, NewInfo),
{ok, ActualInfo2} = ?FILE_MODULE:read_file_info(Name1),
#file_info{atime=NewActAtime, mtime=NewTime,
ctime=NewActCtime} = ActualInfo2,
NewFilteredAtime = filter_atime(NewTime, Config),
NewFilteredAtime = filter_atime(NewActAtime, Config),
case os:type() of
{win32, _} -> NewActCtime = NewTime;
_ -> ok
end,
%% The file should still be unwritable.
{error, eacces} = ?FILE_MODULE:write_file(Name1, "hello again"),
%% Make the file writeable again, so that we can remove the
%% test suites ... :-)
?FILE_MODULE:write_file_info(Name1, #file_info{mode=8#600}),
[] = flush(),
ok.
file_wfi_helpers(Config) when is_list(Config) ->
RootDir = get_good_directory(Config),
io:format("RootDir = ~p", [RootDir]),
Name = filename:join(RootDir,
atom_to_list(?MODULE) ++ "_wfi_helpers"),
ok = ?FILE_MODULE:write_file(Name, "hello again"),
NewTime = {{1997, 02, 15}, {13, 18, 20}},
ok = ?FILE_MODULE:change_time(Name, NewTime, NewTime),
{ok, #file_info{atime=NewActAtime, mtime=NewTime}} =
?FILE_MODULE:read_file_info(Name),
NewFilteredAtime = filter_atime(NewTime, Config),
NewFilteredAtime = filter_atime(NewActAtime, Config),
%% Make the file unwritable
ok = ?FILE_MODULE:change_mode(Name, 8#400),
{error, eacces} = ?FILE_MODULE:write_file(Name, "hello again"),
%% ... and writable again
ok = ?FILE_MODULE:change_mode(Name, 8#600),
ok = ?FILE_MODULE:write_file(Name, "hello again"),
%% We have no idea which users will work, so all we can do is to check
%% that it returns enoent instead of crashing.
{error, enoent} = ?FILE_MODULE:change_group("bogus file name", 0),
{error, enoent} = ?FILE_MODULE:change_owner("bogus file name", 0),
[] = flush(),
ok.
%% Returns a directory on a file system that has correct file times.
get_good_directory(Config) ->
proplists:get_value(priv_dir, Config).
consult1(Config) when is_list(Config) ->
RootDir = proplists:get_value(priv_dir,Config),
Name = filename:join(RootDir,
atom_to_list(?MODULE)
++"_consult.fil"),
{ok,Fd1} = ?FILE_MODULE:open(Name,write),
%% note that there is no final \n (only a space)
io:format(Fd1,
"{this,[is,1.0],'journey'}.\n\"into\". (sound). ",
[]),
ok = ?FILE_MODULE:close(Fd1),
{ok,[{this,[is,1.0],journey},"into",sound]} =
?FILE_MODULE:consult(Name),
{ok,Fd2} = ?FILE_MODULE:open(Name,write),
%% note the missing double quote
io:format(
Fd2,"{this,[is,1.0],'journey'}.\n \"into. (sound). ",[]),
ok = ?FILE_MODULE:close(Fd2),
{error, {_, _, _} = Msg} = ?FILE_MODULE:consult(Name),
io:format("Errmsg: ~p",[Msg]),
{error, enoent} = ?FILE_MODULE:consult(Name ++ ".nonexistent"),
[] = flush(),
ok.
path_consult(Config) when is_list(Config) ->
RootDir = proplists:get_value(priv_dir,Config),
FileName = atom_to_list(?MODULE)++"_path_consult.fil",
Name = filename:join(RootDir, FileName),
{ok,Fd1} = ?FILE_MODULE:open(Name,write),
io:format(Fd1,"{this,is,a,journey,into,sound}.\n",[]),
ok = ?FILE_MODULE:close(Fd1),
%% File last in path
{ok,[{this,is,a,journey,into,sound}],Dir} =
?FILE_MODULE:path_consult(
[filename:join(RootDir, "dir1"),
filename:join(RootDir, ".."),
filename:join(RootDir, "dir2"),
RootDir], FileName),
true = lists:prefix(RootDir,Dir),
%% While maybe not an error, it may be worth noting that
%% when the full path to a file is given, it's always found
%% regardless of the contents of the path
{ok,_,_} = ?FILE_MODULE:path_consult(["nosuch1","nosuch2"],Name),
[] = flush(),
ok.
eval1(Config) when is_list(Config) ->
RootDir = proplists:get_value(priv_dir,Config),
Name = filename:join(RootDir,
atom_to_list(?MODULE)++"_eval.fil"),
{ok,Fd1} = ?FILE_MODULE:open(Name,write),
%% note that there is no final \n (only a space)
io:format(Fd1,"put(evaluated_ok,\ntrue). ",[]),
ok = ?FILE_MODULE:close(Fd1),
ok = ?FILE_MODULE:eval(Name),
true = get(evaluated_ok),
{ok,Fd2} = ?FILE_MODULE:open(Name,write),
%% note that there is no final \n (only a space)
io:format(Fd2,"put(evaluated_ok,\nR). ",[]),
ok = ?FILE_MODULE:close(Fd2),
ok = ?FILE_MODULE:eval(
Name,
erl_eval:add_binding('R', true, erl_eval:new_bindings())),
true = get(evaluated_ok),
{ok,Fd3} = ?FILE_MODULE:open(Name,write),
%% garbled
io:format(Fd3,"puGARBLED-GARBLED\ntrue). ",[]),
ok = ?FILE_MODULE:close(Fd3),
{error, {_, _, _} = Msg} = ?FILE_MODULE:eval(Name),
io:format("Errmsg1: ~p",[Msg]),
{error, enoent} = ?FILE_MODULE:eval(Name ++ ".nonexistent"),
[] = flush(),
ok.
path_eval(Config) when is_list(Config) ->
RootDir = proplists:get_value(priv_dir,Config),
FileName = atom_to_list(?MODULE)++"_path_eval.fil",
Name = filename:join(RootDir, FileName),
{ok,Fd1} = ?FILE_MODULE:open(Name,write),
io:format(Fd1,"put(evaluated_ok,true).\n",[]),
ok = ?FILE_MODULE:close(Fd1),
%% File last in path
{ok,Dir} =
?FILE_MODULE:path_eval(
[filename:join(RootDir, "dir1"),
filename:join(RootDir, ".."),
filename:join(RootDir, "dir2"),
RootDir],FileName),
true = get(evaluated_ok),
true = lists:prefix(RootDir,Dir),
%% While maybe not an error, it may be worth noting that
%% when the full path to a file is given, it's always found
%% regardless of the contents of the path
{ok,Fd2} = ?FILE_MODULE:open(Name,write),
io:format(Fd2,"put(evaluated_ok,R).\n",[]),
ok = ?FILE_MODULE:close(Fd2),
{ok,_} = ?FILE_MODULE:path_eval(
["nosuch1","nosuch2"],
Name,
erl_eval:add_binding('R', true, erl_eval:new_bindings())),
[] = flush(),
ok.
script1(Config) when is_list(Config) ->
RootDir = proplists:get_value(priv_dir,Config),
Name = filename:join(RootDir,
atom_to_list(?MODULE)++"_script.fil"),
{ok,Fd1} = ?FILE_MODULE:open(Name,write),
%% note that there is no final \n (only a space)
io:format(Fd1,"A = 11,\nB = 6,\nA+B. ",[]),
ok = ?FILE_MODULE:close(Fd1),
{ok,17} = ?FILE_MODULE:script(Name),
{ok,Fd2} = ?FILE_MODULE:open(Name,write),
%% note that there is no final \n (only a space)
io:format(Fd2,"A = 11,\nA+B. ",[]),
ok = ?FILE_MODULE:close(Fd2),
{ok,17} = ?FILE_MODULE:script(
Name,
erl_eval:add_binding('B', 6, erl_eval:new_bindings())),
{ok,Fd3} = ?FILE_MODULE:open(Name,write),
io:format(Fd3,"A = 11,\nB = six,\nA+B. ",[]),
ok = ?FILE_MODULE:close(Fd3),
{error, {_, _, _} = Msg} = ?FILE_MODULE:script(Name),
io:format("Errmsg1: ~p",[Msg]),
{error, enoent} = ?FILE_MODULE:script(Name ++ ".nonexistent"),
[] = flush(),
ok.
path_script(Config) when is_list(Config) ->
RootDir = proplists:get_value(priv_dir,Config),
FileName = atom_to_list(?MODULE)++"_path_script.fil",
Name = filename:join(RootDir, FileName),
{ok,Fd1} = ?FILE_MODULE:open(Name,write),
io:format(Fd1,"A = 11,\nB = 6,\nA+B.\n",[]),
ok = ?FILE_MODULE:close(Fd1),
%% File last in path
{ok, 17, Dir} =
?FILE_MODULE:path_script(
[filename:join(RootDir, "dir1"),
filename:join(RootDir, ".."),
filename:join(RootDir, "dir2"),
RootDir],FileName),
true = lists:prefix(RootDir,Dir),
%% While maybe not an error, it may be worth noting that
%% when the full path to a file is given, it's always found
%% regardless of the contents of the path
{ok,Fd2} = ?FILE_MODULE:open(Name,write),
io:format(Fd2,"A = 11,\nA+B.",[]),
ok = ?FILE_MODULE:close(Fd2),
{ok, 17, Dir} =
?FILE_MODULE:path_script(
["nosuch1","nosuch2"],
Name,
erl_eval:add_binding('B', 6, erl_eval:new_bindings())),
[] = flush(),
ok.
truncate(Config) when is_list(Config) ->
RootDir = proplists:get_value(priv_dir,Config),
Name = filename:join(RootDir,
atom_to_list(?MODULE)
++"_truncate.fil"),
%% Create a file with some data.
MyData = "0123456789abcdefghijklmnopqrstuvxyz",
ok = ?FILE_MODULE:write_file(Name, MyData),
%% Truncate the file to 10 characters.
{ok, Fd} = ?FILE_MODULE:open(Name, read_write),
{ok, 10} = ?FILE_MODULE:position(Fd, 10),
ok = ?FILE_MODULE:truncate(Fd),
ok = ?FILE_MODULE:close(Fd),
%% Read back the file and check that it has been truncated.
Expected = list_to_binary("0123456789"),
{ok, Expected} = ?FILE_MODULE:read_file(Name),
%% Open the file read only and verify that it is not possible to
%% truncate it, OTP-1960
{ok, Fd2} = ?FILE_MODULE:open(Name, read),
{ok, 5} = ?FILE_MODULE:position(Fd2, 5),
{error, _} = ?FILE_MODULE:truncate(Fd2),
[] = flush(),
ok.
%% Tests that ?FILE_MODULE:datasync/1 at least doesn't crash.
datasync(Config) when is_list(Config) ->
PrivDir = proplists:get_value(priv_dir, Config),
Sync = filename:join(PrivDir,
atom_to_list(?MODULE)
++"_sync.fil"),
%% Raw open.
{ok, Fd} = ?FILE_MODULE:open(Sync, [write, raw]),
ok = ?FILE_MODULE:datasync(Fd),
ok = ?FILE_MODULE:close(Fd),
%% Ordinary open.
{ok, Fd2} = ?FILE_MODULE:open(Sync, [write]),
ok = ?FILE_MODULE:datasync(Fd2),
ok = ?FILE_MODULE:close(Fd2),
[] = flush(),
ok.
%% Tests that ?FILE_MODULE:sync/1 at least doesn't crash.
sync(Config) when is_list(Config) ->
PrivDir = proplists:get_value(priv_dir, Config),
Sync = filename:join(PrivDir,
atom_to_list(?MODULE)
++"_sync.fil"),
%% Raw open.
{ok, Fd} = ?FILE_MODULE:open(Sync, [write, raw]),
ok = ?FILE_MODULE:sync(Fd),
ok = ?FILE_MODULE:close(Fd),
%% Ordinary open.
{ok, Fd2} = ?FILE_MODULE:open(Sync, [write]),
ok = ?FILE_MODULE:sync(Fd2),
ok = ?FILE_MODULE:close(Fd2),
[] = flush(),
ok.
%% Tests that ?FILE_MODULE:advise/4 at least doesn't crash.
advise(Config) when is_list(Config) ->
PrivDir = proplists:get_value(priv_dir, Config),
Advise = filename:join(PrivDir,
atom_to_list(?MODULE)
++"_advise.fil"),
Line1 = "Hello\n",
Line2 = "World!\n",
{ok, Fd} = ?FILE_MODULE:open(Advise, [write]),
ok = ?FILE_MODULE:advise(Fd, 0, 0, normal),
ok = io:format(Fd, "~s", [Line1]),
ok = io:format(Fd, "~s", [Line2]),
ok = ?FILE_MODULE:close(Fd),
{ok, Fd2} = ?FILE_MODULE:open(Advise, [write]),
ok = ?FILE_MODULE:advise(Fd2, 0, 0, random),
ok = io:format(Fd2, "~s", [Line1]),
ok = io:format(Fd2, "~s", [Line2]),
ok = ?FILE_MODULE:close(Fd2),
{ok, Fd3} = ?FILE_MODULE:open(Advise, [write]),
ok = ?FILE_MODULE:advise(Fd3, 0, 0, sequential),
ok = io:format(Fd3, "~s", [Line1]),
ok = io:format(Fd3, "~s", [Line2]),
ok = ?FILE_MODULE:close(Fd3),
{ok, Fd4} = ?FILE_MODULE:open(Advise, [write]),
ok = ?FILE_MODULE:advise(Fd4, 0, 0, will_need),
ok = io:format(Fd4, "~s", [Line1]),
ok = io:format(Fd4, "~s", [Line2]),
ok = ?FILE_MODULE:close(Fd4),
{ok, Fd5} = ?FILE_MODULE:open(Advise, [write]),
ok = ?FILE_MODULE:advise(Fd5, 0, 0, dont_need),
ok = io:format(Fd5, "~s", [Line1]),
ok = io:format(Fd5, "~s", [Line2]),
ok = ?FILE_MODULE:close(Fd5),
{ok, Fd6} = ?FILE_MODULE:open(Advise, [write]),
ok = ?FILE_MODULE:advise(Fd6, 0, 0, no_reuse),
ok = io:format(Fd6, "~s", [Line1]),
ok = io:format(Fd6, "~s", [Line2]),
ok = ?FILE_MODULE:close(Fd6),
{ok, Fd7} = ?FILE_MODULE:open(Advise, [write]),
{error, einval} = ?FILE_MODULE:advise(Fd7, 0, 0, bad_advise),
ok = ?FILE_MODULE:close(Fd7),
%% test write without advise, then a read after an advise
{ok, Fd8} = ?FILE_MODULE:open(Advise, [write]),
ok = io:format(Fd8, "~s", [Line1]),
ok = io:format(Fd8, "~s", [Line2]),
ok = ?FILE_MODULE:close(Fd8),
{ok, Fd9} = ?FILE_MODULE:open(Advise, [read]),
Offset = 0,
%% same as a 0 length in some implementations
Length = length(Line1) + length(Line2),
ok = ?FILE_MODULE:advise(Fd9, Offset, Length, sequential),
{ok, Line1} = ?FILE_MODULE:read_line(Fd9),
{ok, Line2} = ?FILE_MODULE:read_line(Fd9),
eof = ?FILE_MODULE:read_line(Fd9),
ok = ?FILE_MODULE:close(Fd9),
[] = flush(),
ok.
%% Tests that ?FILE_MODULE:allocate/3 at least doesn't crash.
allocate(Config) when is_list(Config) ->
PrivDir = proplists:get_value(priv_dir, Config),
Allocate = filename:join(PrivDir,
atom_to_list(?MODULE)
++"_allocate.fil"),
Line1 = "Hello\n",
Line2 = "World!\n",
{ok, Fd} = ?FILE_MODULE:open(Allocate, [write, binary]),
allocate_and_assert(Fd, 1, iolist_size([Line1, Line2])),
ok = io:format(Fd, "~s", [Line1]),
ok = io:format(Fd, "~s", [Line2]),
ok = ?FILE_MODULE:close(Fd),
{ok, Fd2} = ?FILE_MODULE:open(Allocate, [write, binary]),
allocate_and_assert(Fd2, 1, iolist_size(Line1)),
ok = io:format(Fd2, "~s", [Line1]),
ok = io:format(Fd2, "~s", [Line2]),
ok = ?FILE_MODULE:close(Fd2),
{ok, Fd3} = ?FILE_MODULE:open(Allocate, [write, binary]),
allocate_and_assert(Fd3, 1, iolist_size(Line1) + 1),
ok = io:format(Fd3, "~s", [Line1]),
ok = io:format(Fd3, "~s", [Line2]),
ok = ?FILE_MODULE:close(Fd3),
{ok, Fd4} = ?FILE_MODULE:open(Allocate, [write, binary]),
allocate_and_assert(Fd4, 1, 4 * iolist_size([Line1, Line2])),
ok = io:format(Fd4, "~s", [Line1]),
ok = io:format(Fd4, "~s", [Line2]),
ok = ?FILE_MODULE:close(Fd4),
[] = flush(),
ok.
allocate_and_assert(Fd, Offset, Length) ->
%% Just verify that calls to ?PRIM_FILE:allocate/3 don't crash or have
%% any other negative side effect. We can't really asssert against a
%% specific return value, because support for file space pre-allocation
%% depends on the OS, OS version and underlying filesystem.
%%
%% The Linux kernel added support for fallocate() in version 2.6.23,
%% which currently works only for the ext4, ocfs2, xfs and btrfs file
%% systems. posix_fallocate() is available in glibc as of version
%% 2.1.94, but it was buggy until glibc version 2.7.
%%
%% Mac OS X, as of version 10.3, supports the fcntl operation F_PREALLOCATE.
%%
%% Solaris supports posix_fallocate() but only for the UFS file system
%% apparently (not supported for ZFS).
%%
%% FreeBSD 9.0 is the first FreeBSD release supporting posix_fallocate().
%%
%% For Windows there's apparently no way to pre-allocate file space, at
%% least with same semantics as posix_fallocate(), fallocate() and
%% fcntl F_PREALLOCATE.
Result = ?FILE_MODULE:allocate(Fd, Offset, Length),
case os:type() of
{win32, _} ->
{error, enotsup} = Result;
_ ->
_ = Result
end.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
delete(Config) when is_list(Config) ->
RootDir = proplists:get_value(priv_dir,Config),
Name = filename:join(RootDir,
atom_to_list(?MODULE)
++"_delete.fil"),
{ok, Fd1} = ?FILE_MODULE:open(Name, write),
io:format(Fd1,"ok.\n",[]),
ok = ?FILE_MODULE:close(Fd1),
%% Check that the file is readable
{ok, Fd2} = ?FILE_MODULE:open(Name, read),
ok = ?FILE_MODULE:close(Fd2),
ok = ?FILE_MODULE:delete(Name),
%% Check that the file is not readable anymore
{error, _} = ?FILE_MODULE:open(Name, read),
%% Try deleting a nonexistent file
{error, enoent} = ?FILE_MODULE:delete(Name),
[] = flush(),
ok.
rename(Config) when is_list(Config) ->
RootDir = proplists:get_value(priv_dir,Config),
FileName1 = atom_to_list(?MODULE)++"_rename.fil",
FileName2 = atom_to_list(?MODULE)++"_rename.ful",
Name1 = filename:join(RootDir, FileName1),
Name2 = filename:join(RootDir, FileName2),
{ok,Fd1} = ?FILE_MODULE:open(Name1,write),
ok = ?FILE_MODULE:close(Fd1),
%% Rename, and check that id really changed name
ok = ?FILE_MODULE:rename(Name1,Name2),
{error, _} = ?FILE_MODULE:open(Name1,read),
{ok,Fd2} = ?FILE_MODULE:open(Name2,read),
ok = ?FILE_MODULE:close(Fd2),
%% Try renaming something to itself
ok = ?FILE_MODULE:rename(Name2,Name2),
%% Try renaming something that doesn't exist
{error, enoent} = ?FILE_MODULE:rename(Name1,Name2),
%% Try renaming to something else than a string
{error, badarg} = ?FILE_MODULE:rename(Name1,{foo,bar}),
%% Move between directories
DirName1 = filename:join(RootDir,
atom_to_list(?MODULE)
++"_rename_dir"),
DirName2 = filename:join(RootDir,
atom_to_list(?MODULE)
++"_second_rename_dir"),
Name1foo = filename:join(DirName1, "foo.fil"),
Name2foo = filename:join(DirName2, "foo.fil"),
Name2bar = filename:join(DirName2, "bar.dir"),
ok = ?FILE_MODULE:make_dir(DirName1),
%% The name has to include the full file name, path in not enough
expect({error, eisdir}, {error, eexist},
?FILE_MODULE:rename(Name2,DirName1)),
ok = ?FILE_MODULE:rename(Name2, Name1foo),
%% Now rename the directory
ok = ?FILE_MODULE:rename(DirName1,DirName2),
%% And check that the file is there now
{ok,Fd3} = ?FILE_MODULE:open(Name2foo, read),
ok = ?FILE_MODULE:close(Fd3),
%% Try some dirty things now: move the directory into itself
{error, Msg1} = ?FILE_MODULE:rename(DirName2, Name2bar),
io:format("Errmsg1: ~p",[Msg1]),
%% move dir into a file in itself
{error, Msg2} = ?FILE_MODULE:rename(DirName2, Name2foo),
io:format("Errmsg2: ~p",[Msg2]),
[] = flush(),
ok.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
names(Config) when is_list(Config) ->
RootDir = proplists:get_value(priv_dir,Config),
FileName = "foo1.fil",
Name1 = filename:join(RootDir, FileName),
Name2 = [RootDir,"/","foo1",".","fil"],
Name3 = [RootDir,"/",foo,$1,[[[],[],'.']],"f",il],
{ok,Fd0} = ?FILE_MODULE:open(Name1,write),
ok = ?FILE_MODULE:close(Fd0),
%% Try some file names
{ok,Fd1} = ?FILE_MODULE:open(Name1,read),
ok = ?FILE_MODULE:close(Fd1),
{ok,Fd2f} = ?FILE_MODULE:open(lists:flatten(Name2),read),
ok = ?FILE_MODULE:close(Fd2f),
{ok,Fd2} = ?FILE_MODULE:open(Name2,read),
ok = ?FILE_MODULE:close(Fd2),
{ok,Fd3} = ?FILE_MODULE:open(Name3,read),
ok = ?FILE_MODULE:close(Fd3),
%% Now try the same on raw files.
{ok,Fd4} = ?FILE_MODULE:open(Name2, [read, raw]),
ok = ?FILE_MODULE:close(Fd4),
{ok,Fd4f} = ?FILE_MODULE:open(lists:flatten(Name2), [read, raw]),
ok = ?FILE_MODULE:close(Fd4f),
{ok,Fd5} = ?FILE_MODULE:open(Name3, [read, raw]),
ok = ?FILE_MODULE:close(Fd5),
case length(Name1) > 255 of
true ->
io:format("Path too long for an atom:\n\n~p\n", [Name1]);
false ->
Name4 = list_to_atom(Name1),
{ok,Fd6} = ?FILE_MODULE:open(Name4,read),
ok = ?FILE_MODULE:close(Fd6)
end,
%% Try some path names
Path1 = RootDir,
Path2 = [RootDir],
Path3 = ['',[],[RootDir,[[]]]],
{ok,Fd11,_} = ?FILE_MODULE:path_open([Path1],FileName,read),
ok = ?FILE_MODULE:close(Fd11),
{ok,Fd12,_} = ?FILE_MODULE:path_open([Path2],FileName,read),
ok = ?FILE_MODULE:close(Fd12),
{ok,Fd13,_} = ?FILE_MODULE:path_open([Path3],FileName,read),
ok = ?FILE_MODULE:close(Fd13),
case length(Path1) > 255 of
true->
io:format("Path too long for an atom:\n\n~p\n", [Path1]);
false ->
Path4 = list_to_atom(Path1),
{ok,Fd14,_} = ?FILE_MODULE:path_open([Path4],FileName,read),
ok = ?FILE_MODULE:close(Fd14)
end,
[] = flush(),
ok.
volume_relative_paths(Config) when is_list(Config) ->
case os:type() of
{win32, _} ->
{ok, [Drive, $: | _]} = file:get_cwd(),
%% Relative to current device root.
{ok, RootInfo} = file:read_file_info([Drive, $:, $/]),
{ok, RootInfo} = file:read_file_info("/"),
%% Relative to current device directory.
{ok, DirContents} = file:list_dir([Drive, $:]),
{ok, DirContents} = file:list_dir("."),
[] = flush(),
ok;
_ ->
{skip, "This test is Windows-specific."}
end.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
e_delete(Config) when is_list(Config) ->
RootDir = proplists:get_value(priv_dir, Config),
Base = filename:join(RootDir,
atom_to_list(?MODULE)++"_e_delete"),
ok = ?FILE_MODULE:make_dir(Base),
%% Delete a non-existing file.
{error, enoent} =
?FILE_MODULE:delete(filename:join(Base, "non_existing")),
%% Delete a directory.
{error, eperm} = ?FILE_MODULE:delete(Base),
%% Use a path-name with a non-directory component.
Afile = filename:join(Base, "a_file"),
ok = ?FILE_MODULE:write_file(Afile, "hello\n"),
{error, E} =
expect({error, enotdir}, {error, enoent},
?FILE_MODULE:delete(filename:join(Afile, "another_file"))),
io:format("Result: ~p~n", [E]),
%% No permission.
case os:type() of
{win32, _} ->
%% Remove a character device.
{error, eacces} = ?FILE_MODULE:delete("nul");
_ ->
?FILE_MODULE:write_file_info(
Base, #file_info {mode=0}),
{error, eacces} = ?FILE_MODULE:delete(Afile),
?FILE_MODULE:write_file_info(
Base, #file_info {mode=8#700})
end,
[] = flush(),
ok.
%%% FreeBSD gives EEXIST when renaming a file to an empty dir, although the
%%% manual page can be interpreted as saying that EISDIR should be given.
%%% (What about FreeBSD? We store our nightly build results on a FreeBSD
%%% file system, that's what.)
e_rename(Config) when is_list(Config) ->
RootDir = proplists:get_value(priv_dir, Config),
Base = filename:join(RootDir,
atom_to_list(?MODULE)++"_e_rename"),
ok = ?FILE_MODULE:make_dir(Base),
%% Create an empty directory.
EmptyDir = filename:join(Base, "empty_dir"),
ok = ?FILE_MODULE:make_dir(EmptyDir),
%% Create a non-empty directory.
NonEmptyDir = filename:join(Base, "non_empty_dir"),
ok = ?FILE_MODULE:make_dir(NonEmptyDir),
ok = ?FILE_MODULE:write_file(
filename:join(NonEmptyDir, "a_file"),
"hello\n"),
%% Create another non-empty directory.
ADirectory = filename:join(Base, "a_directory"),
ok = ?FILE_MODULE:make_dir(ADirectory),
ok = ?FILE_MODULE:write_file(
filename:join(ADirectory, "a_file"),
"howdy\n\n"),
%% Create a data file.
File = filename:join(Base, "just_a_file"),
ok = ?FILE_MODULE:write_file(File, "anything goes\n\n"),
%% Move an existing directory to a non-empty directory.
{error, eexist} = ?FILE_MODULE:rename(ADirectory, NonEmptyDir),
%% Move a root directory.
{error, einval} = ?FILE_MODULE:rename("/", "arne"),
%% Move Base into Base/new_name.
{error, einval} =
?FILE_MODULE:rename(Base, filename:join(Base, "new_name")),
%% Overwrite a directory with a file.
expect({error, eexist}, %FreeBSD (?)
{error, eisdir},
?FILE_MODULE:rename(File, EmptyDir)),
expect({error, eexist}, %FreeBSD (?)
{error, eisdir},
?FILE_MODULE:rename(File, NonEmptyDir)),
%% Move a non-existing file.
NonExistingFile = filename:join(Base, "non_existing_file"),
{error, enoent} = ?FILE_MODULE:rename(NonExistingFile, NonEmptyDir),
%% Overwrite a file with a directory.
expect({error, eexist}, %FreeBSD (?)
{error, enotdir},
?FILE_MODULE:rename(ADirectory, File)),
%% Move a file to another filesystem.
%% XXX - This test case is bogus. We cannot be guaranteed that
%% the source and destination are on
%% different filesystems.
%%
%% XXX - Gross hack!
Comment = case os:type() of
{unix, _} ->
OtherFs = "/tmp",
NameOnOtherFs = filename:join(OtherFs, filename:basename(File)),
{ok, Com} = case ?FILE_MODULE:rename(File, NameOnOtherFs) of
{error, exdev} ->
%% The file could be in
%% the same filesystem!
{ok, ok};
ok ->
{ok, {comment,
"Moving between filesystems "
"suceeded, files are probably "
"in the same filesystem!"}};
{error, eperm} ->
{ok, {comment, "SBS! You don't "
"have the permission to do "
"this test!"}};
Else ->
Else
end,
Com;
{win32, _} ->
%% At least Windows NT can
%% successfully move a file to
%% another drive.
ok
end,
[] = flush(),
Comment.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
e_make_dir(Config) when is_list(Config) ->
RootDir = proplists:get_value(priv_dir, Config),
Base = filename:join(RootDir,
atom_to_list(?MODULE)++"_e_make_dir"),
ok = ?FILE_MODULE:make_dir(Base),
%% A component of the path does not exist.
{error, enoent} = ?FILE_MODULE:make_dir(filename:join([Base, "a", "b"])),
%% Use a path-name with a non-directory component.
Afile = filename:join(Base, "a_directory"),
ok = ?FILE_MODULE:write_file(Afile, "hello\n"),
case ?FILE_MODULE:make_dir(
filename:join(Afile, "another_directory")) of
{error, enotdir} -> io:format("Result: enotdir");
{error, enoent} -> io:format("Result: enoent")
end,
%% No permission (on Unix only).
case os:type() of
{win32, _} ->
ok;
_ ->
?FILE_MODULE:write_file_info(Base, #file_info {mode=0}),
{error, eacces} = ?FILE_MODULE:make_dir(filename:join(Base, "xxxx")),
?FILE_MODULE:write_file_info(
Base, #file_info {mode=8#700})
end,
ok.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
e_del_dir(Config) when is_list(Config) ->
RootDir = proplists:get_value(priv_dir, Config),
Base = test_server:temp_name(filename:join(RootDir, "e_del_dir")),
io:format("Base: ~p", [Base]),
ok = ?FILE_MODULE:make_dir(Base),
%% Delete a non-existent directory.
{error, enoent} =
?FILE_MODULE:del_dir(filename:join(Base, "non_existing")),
%% Use a path-name with a non-directory component.
Afile = filename:join(Base, "a_directory"),
ok = ?FILE_MODULE:write_file(Afile, "hello\n"),
{error, E1} = expect({error, enotdir}, {error, enoent},
?FILE_MODULE:del_dir(
filename:join(Afile, "another_directory"))),
io:format("Result: ~p", [E1]),
%% Delete a non-empty directory.
{error, E2} = expect({error, enotempty}, {error, eexist}, {error, eacces},
?FILE_MODULE:del_dir(Base)),
io:format("Result: ~p", [E2]),
%% Remove the current directory.
{error, E3} = expect({error, einval},
{error, eperm}, % Linux and DUX
{error, eacces},
{error, ebusy},
?FILE_MODULE:del_dir(".")),
io:format("Result: ~p", [E3]),
%% No permission.
case os:type() of
{win32, _} ->
ok;
_ ->
ADirectory = filename:join(Base, "no_perm"),
ok = ?FILE_MODULE:make_dir(ADirectory),
?FILE_MODULE:write_file_info( Base, #file_info {mode=0}),
{error, eacces} = ?FILE_MODULE:del_dir(ADirectory),
?FILE_MODULE:write_file_info( Base, #file_info {mode=8#700})
end,
[] = flush(),
ok.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Trying reading and positioning from a compressed file.
read_compressed_cooked(Config) when is_list(Config) ->
Data = proplists:get_value(data_dir, Config),
Real = filename:join(Data, "realmen.html.gz"),
{ok, Fd} = ?FILE_MODULE:open(Real, [read,compressed]),
try_read_file_list(Fd).
read_compressed_cooked_binary(Config) when is_list(Config) ->
Data = proplists:get_value(data_dir, Config),
Real = filename:join(Data, "realmen.html.gz"),
{ok, Fd} = ?FILE_MODULE:open(Real, [read,compressed,binary]),
try_read_file_binary(Fd).
%% Trying reading and positioning from an uncompressed file,
%% but with the compressed flag given.
read_not_really_compressed(Config) when is_list(Config) ->
Data = proplists:get_value(data_dir, Config),
Priv = proplists:get_value(priv_dir, Config),
%% The file realmen.html might have got CRs added (by WinZip).
%% Remove them, or the file positions will not be correct.
Real = filename:join(Data, "realmen.html"),
RealPriv = filename:join(Priv,
atom_to_list(?MODULE)++"_realmen.html"),
{ok, RealDataBin} = ?FILE_MODULE:read_file(Real),
RealData = remove_crs(binary_to_list(RealDataBin), []),
ok = ?FILE_MODULE:write_file(RealPriv, RealData),
{ok, Fd} = ?FILE_MODULE:open(RealPriv, [read, compressed]),
try_read_file_list(Fd).
remove_crs([$\r|Rest], Result) ->
remove_crs(Rest, Result);
remove_crs([C|Rest], Result) ->
remove_crs(Rest, [C|Result]);
remove_crs([], Result) ->
lists:reverse(Result).
try_read_file_list(Fd) ->
%% Seek to the current position (nothing should happen).
{ok, 0} = ?FILE_MODULE:position(Fd, 0),
{ok, 0} = ?FILE_MODULE:position(Fd, {cur, 0}),
%% Read a few lines from a compressed file.
ShouldBe = "Real Programmers Don't Use PASCAL\n",
ShouldBe = io:get_line(Fd, ''),
%% Now seek forward.
{ok, 381} = ?FILE_MODULE:position(Fd, 381),
Back = "Back in the good old days -- the \"Golden Era\" " ++
"of computers, it was\n",
Back = io:get_line(Fd, ''),
%% Try to search forward relative to the current position.
{ok, CurPos} = ?FILE_MODULE:position(Fd, {cur, 0}),
RealPos = 4273,
{ok, RealPos} = ?FILE_MODULE:position(Fd, {cur, RealPos-CurPos}),
RealProg = " Real Programmers aren't afraid to use GOTOs.\n",
RealProg = io:get_line(Fd, ''),
%% Seek backward.
AfterTitle = length(""),
{ok, AfterTitle} = ?FILE_MODULE:position(Fd, AfterTitle),
Title = "Real Programmers Don't Use PASCAL\n",
Title = io:get_line(Fd, ''),
%% Seek past the end of the file.
{ok, _} = ?FILE_MODULE:position(Fd, 25000),
%% Done.
?FILE_MODULE:close(Fd),
[] = flush(),
ok.
try_read_file_binary(Fd) ->
%% Seek to the current position (nothing should happen).
{ok, 0} = ?FILE_MODULE:position(Fd, 0),
{ok, 0} = ?FILE_MODULE:position(Fd, {cur, 0}),
%% Read a few lines from a compressed file.
ShouldBe = <<"Real Programmers Don't Use PASCAL\n">>,
ShouldBe = io:get_line(Fd, ''),
%% Now seek forward.
{ok, 381} = ?FILE_MODULE:position(Fd, 381),
Back = <<"Back in the good old days -- the \"Golden Era\" "
"of computers, it was\n">>,
Back = io:get_line(Fd, ''),
%% Try to search forward relative to the current position.
{ok, CurPos} = ?FILE_MODULE:position(Fd, {cur, 0}),
RealPos = 4273,
{ok, RealPos} = ?FILE_MODULE:position(Fd, {cur, RealPos-CurPos}),
RealProg = <<" Real Programmers aren't afraid to use GOTOs.\n">>,
RealProg = io:get_line(Fd, ''),
%% Seek backward.
AfterTitle = length(""),
{ok, AfterTitle} = ?FILE_MODULE:position(Fd, AfterTitle),
Title = <<"Real Programmers Don't Use PASCAL\n">>,
Title = io:get_line(Fd, ''),
%% Done.
?FILE_MODULE:close(Fd),
[] = flush(),
ok.
read_cooked_tar_problem(Config) when is_list(Config) ->
Data = proplists:get_value(data_dir, Config),
ProblemFile = filename:join(Data, "cooked_tar_problem.tar.gz"),
{ok,Fd} = ?FILE_MODULE:open(ProblemFile, [read,compressed,binary]),
{ok,34304} = file:position(Fd, 34304),
{ok,Bin} = file:read(Fd, 512),
512 = byte_size(Bin),
{ok,34304+512+1024} = file:position(Fd, {cur,1024}),
ok = file:close(Fd),
ok.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
write_compressed(Config) when is_list(Config) ->
Priv = proplists:get_value(priv_dir, Config),
MyFile = filename:join(Priv,
atom_to_list(?MODULE)++"_test.gz"),
%% Write a file.
{ok, Fd} = ?FILE_MODULE:open(MyFile, [write, compressed]),
{ok, 0} = ?FILE_MODULE:position(Fd, 0),
Prefix = "hello\n",
End = "end\n",
ok = io:put_chars(Fd, Prefix),
{ok, 143} = ?FILE_MODULE:position(Fd, 143),
ok = io:put_chars(Fd, End),
ok = ?FILE_MODULE:close(Fd),
%% Read the file and verify the contents.
{ok, Fd1} = ?FILE_MODULE:open(MyFile, [read, compressed]),
Prefix = io:get_line(Fd1, ''),
Second = lists:duplicate(143-length(Prefix), 0) ++ End,
Second = io:get_line(Fd1, ''),
ok = ?FILE_MODULE:close(Fd1),
%% Verify successful compression by uncompressing the file
%% using zlib:gunzip/1.
{ok,Contents} = file:read_file(MyFile),
<<"hello\n",0:137/unit:8,"end\n">> = zlib:gunzip(Contents),
%% Ensure that the file is compressed.
TotalSize = 143 + length(End),
case ?FILE_MODULE:read_file_info(MyFile) of
{ok, #file_info{size=Size}} when Size < TotalSize ->
ok;
{ok, #file_info{size=Size}} when Size == TotalSize ->
ct:fail(file_not_compressed)
end,
%% Write again to ensure that the file is truncated.
{ok, Fd2} = ?FILE_MODULE:open(MyFile, [write, compressed]),
NewString = "aaaaaaaaaaa",
ok = io:put_chars(Fd2, NewString),
ok = ?FILE_MODULE:close(Fd2),
{ok, Fd3} = ?FILE_MODULE:open(MyFile, [read, compressed]),
{ok, NewString} = ?FILE_MODULE:read(Fd3, 1024),
ok = ?FILE_MODULE:close(Fd3),
%% Done.
[] = flush(),
ok.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
catenated_gzips(Config) when is_list(Config) ->
Priv = proplists:get_value(priv_dir, Config),
MyFile = filename:join(Priv, ?MODULE_STRING++"_test.gz"),
First = "Hello, all good men going to search parties. ",
Second = "Now I really need your help.",
All = iolist_to_binary([First|Second]),
Cat = [zlib:gzip(First),zlib:gzip(Second)],
ok = file:write_file(MyFile, Cat),
{ok,Fd} = file:open(MyFile, [read,compressed,binary]),
{ok,All} = file:read(Fd, 100000),
ok = file:close(Fd),
ok.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
compress_errors(Config) when is_list(Config) ->
DataDir =
filename:dirname(
filename:join(proplists:get_value(data_dir, Config), "x")),
DataDirSlash = DataDir++"/",
{error, enoent} = ?FILE_MODULE:open("non_existing__",
[compressed, read]),
{error, einval} = ?FILE_MODULE:open("non_existing__",
[compressed, read, write]),
{error, einval} = ?FILE_MODULE:open("non_existing__",
[compressed, read, append]),
{error, einval} = ?FILE_MODULE:open("non_existing__",
[compressed, write, append]),
{error, E1} = ?FILE_MODULE:open(DataDir, [compressed, read]),
{error, E2} = ?FILE_MODULE:open(DataDirSlash, [compressed, read]),
{error, E3} = ?FILE_MODULE:open(DataDir, [compressed, write]),
{error, E4} = ?FILE_MODULE:open(DataDirSlash, [compressed, write]),
{eisdir,eisdir,eisdir,eisdir} = {E1,E2,E3,E4},
%% Read a corrupted .gz file.
Corrupted = filename:join(DataDir, "corrupted.gz"),
{ok, Fd} = ?FILE_MODULE:open(Corrupted, [read, compressed]),
{error, eio} = ?FILE_MODULE:read(Fd, 100),
?FILE_MODULE:close(Fd),
[] = flush(),
ok.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
compress_async_crash(Config) when is_list(Config) ->
DataDir = proplists:get_value(data_dir, Config),
Path = filename:join(DataDir, "test.gz"),
ExpectedData = <<"qwerty">>,
_ = ?FILE_MODULE:delete(Path),
{ok, Fd} = ?FILE_MODULE:open(Path, [write, binary, compressed]),
ok = ?FILE_MODULE:write(Fd, ExpectedData),
ok = ?FILE_MODULE:close(Fd),
%% Test that when using async thread pool, the emulator doesn't crash
%% when the efile port driver is stopped while a compressed file operation
%% is in progress (being carried by an async thread).
ok = compress_async_crash_loop(10000, Path, ExpectedData),
ok = ?FILE_MODULE:delete(Path),
ok.
compress_async_crash_loop(0, _Path, _ExpectedData) ->
ok;
compress_async_crash_loop(N, Path, ExpectedData) ->
Parent = self(),
{Pid, Ref} = spawn_monitor(
fun() ->
{ok, Fd} = ?FILE_MODULE:open(
Path, [read, compressed, raw, binary]),
Len = byte_size(ExpectedData),
Parent ! {self(), continue},
{ok, ExpectedData} = ?FILE_MODULE:read(Fd, Len),
ok = ?FILE_MODULE:close(Fd),
receive foobar -> ok end
end),
receive
{Pid, continue} ->
exit(Pid, shutdown),
receive
{'DOWN', Ref, _, _, Reason} ->
shutdown = Reason
end;
{'DOWN', Ref, _, _, Reason2} ->
ct:fail({worker_exited, Reason2})
after 60000 ->
exit(Pid, shutdown),
erlang:demonitor(Ref, [flush]),
ct:fail(worker_timeout)
end,
compress_async_crash_loop(N - 1, Path, ExpectedData).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
unicode(Config) when is_list(Config) ->
Dir = proplists:get_value(priv_dir, Config),
Name = filename:join(Dir, "data-utf8.txt"),
Txt = lists:seq(128, 255),
D = unicode:characters_to_binary(Txt, latin1, latin1),
{ok,Fd1} =
?FILE_MODULE:open(Name, [write,read,binary,{encoding,unicode}]),
ok = ?FILE_MODULE:truncate(Fd1),
ok = ?FILE_MODULE:write(Fd1, Txt),
{ok,0} = ?FILE_MODULE:position(Fd1, bof),
{ok,D} = ?FILE_MODULE:read(Fd1, 129),
{ok,0} = ?FILE_MODULE:position(Fd1, bof),
{ok,D1} = ?FILE_MODULE:read(Fd1, 64),
{ok,Pos} = ?FILE_MODULE:position(Fd1, cur),
{ok,D2} = ?FILE_MODULE:pread(Fd1, {cur,0}, 65),
D = <>,
{ok,D1} = ?FILE_MODULE:pread(Fd1, bof, 64),
{ok,Pos} = ?FILE_MODULE:position(Fd1, Pos),
{ok,D2} = ?FILE_MODULE:read(Fd1, 64),
ok = ?FILE_MODULE:close(Fd1),
%%
RawD = unicode:characters_to_binary(Txt, latin1, unicode),
{ok,RawD} = ?FILE_MODULE:read_file(Name),
%%
{ok,Fd2} = ?FILE_MODULE:open(Name, [read,{encoding,unicode}]),
{ok,Txt} = ?FILE_MODULE:read(Fd2, 129),
{Txt1,Txt2} = lists:split(64, Txt),
{ok,Txt2} = ?FILE_MODULE:pread(Fd2, Pos, 65),
{ok,0} = ?FILE_MODULE:position(Fd2, bof),
{ok,Txt1} = ?FILE_MODULE:read(Fd2, 64),
ok = ?FILE_MODULE:close(Fd2).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Test the file:altname/1 function.
altname(Config) when is_list(Config) ->
RootDir = proplists:get_value(priv_dir, Config),
NewDir = filename:join(RootDir,
"long alternative path name with spaces"),
ok = ?FILE_MODULE:make_dir(NewDir),
Name = filename:join(NewDir, "a_file_with_long_name"),
ShortName = filename:join(NewDir, "short"),
NonexName = filename:join(NewDir, "nonexistent"),
ok = ?FILE_MODULE:write_file(Name, "some contents\n"),
ok = ?FILE_MODULE:write_file(ShortName, "some contents\n"),
Result =
case ?FILE_MODULE:altname(NewDir) of
{error, enotsup} ->
{skipped, "Altname not supported on this platform"};
{ok, "LONGAL~1"} ->
{ok, "A_FILE~1"} = ?FILE_MODULE:altname(Name),
{ok, "c:/"} = ?FILE_MODULE:altname("C:/"),
{ok, "c:/"} = ?FILE_MODULE:altname("C:\\"),
{error,enoent} = ?FILE_MODULE:altname(NonexName),
{ok, "short"} = ?FILE_MODULE:altname(ShortName),
ok
end,
[] = flush(),
Result.
%% Test creating a hard link.
make_link(Config) when is_list(Config) ->
RootDir = proplists:get_value(priv_dir, Config),
NewDir = filename:join(RootDir,
atom_to_list(?MODULE)
++"_make_link"),
ok = ?FILE_MODULE:make_dir(NewDir),
Name = filename:join(NewDir, "a_file"),
ok = ?FILE_MODULE:write_file(Name, "some contents\n"),
Alias = filename:join(NewDir, "an_alias"),
Result =
case ?FILE_MODULE:make_link(Name, Alias) of
{error, enotsup} ->
{skipped, "Links not supported on this platform"};
ok ->
%% Note: We take the opportunity to test
%% ?FILE_MODULE:read_link_info/1,
%% which should in behave exactly as
%% ?FILE_MODULE:read_file_info/1
%% since they are not used on symbolic links.
{ok, Info} = ?FILE_MODULE:read_link_info(Name),
{ok,Info} = ?FILE_MODULE:read_link_info(Name, [raw]),
{ok, Info} = ?FILE_MODULE:read_link_info(Alias),
{ok,Info} = ?FILE_MODULE:read_link_info(Alias, [raw]),
#file_info{links = 2, type = regular} = Info,
{error, eexist} =
?FILE_MODULE:make_link(Name, Alias),
ok
end,
[] = flush(),
Result.
%% Test that reading link info for an ordinary file or directory works
%% (on all platforms).
read_link_info_for_non_link(Config) when is_list(Config) ->
{ok, #file_info{type=directory}} =
?FILE_MODULE:read_link_info("."),
{ok, #file_info{type=directory}} = ?FILE_MODULE:read_link_info(".", [raw]),
[] = flush(),
ok.
%% Test operations on symbolic links (for Unix).
symlinks(Config) when is_list(Config) ->
{error, _} = ?FILE_MODULE:read_link(lists:duplicate(10000,$a)),
{error, _} = ?FILE_MODULE:read_link_all(lists:duplicate(10000,$a)),
RootDir = proplists:get_value(priv_dir, Config),
NewDir = filename:join(RootDir,
atom_to_list(?MODULE)
++"_symlinks"),
ok = ?FILE_MODULE:make_dir(NewDir),
Name = filename:join(NewDir, "a_plain_file"),
ok = ?FILE_MODULE:write_file(Name, "some stupid content\n"),
Alias = filename:join(NewDir, "a_symlink_alias"),
Result =
case ?FILE_MODULE:make_symlink(Name, Alias) of
{error, enotsup} ->
{skipped, "Links not supported on this platform"};
{error, eperm} ->
{win32,_} = os:type(),
{skipped, "Windows user not privileged to create symlinks"};
ok ->
{ok, Info1} = ?FILE_MODULE:read_file_info(Name),
{ok,Info1} = ?FILE_MODULE:read_file_info(Name, [raw]),
{ok, Info1} = ?FILE_MODULE:read_file_info(Alias),
{ok,Info1} = ?FILE_MODULE:read_file_info(Alias, [raw]),
{ok, Info1} = ?FILE_MODULE:read_link_info(Name),
{ok,Info1} = ?FILE_MODULE:read_link_info(Name, [raw]),
#file_info{links = 1, type = regular} = Info1,
{ok, Info2} = ?FILE_MODULE:read_link_info(Alias),
{ok,Info2} = ?FILE_MODULE:read_link_info(Alias, [raw]),
#file_info{links=1, type=symlink} = Info2,
{ok, Name} = ?FILE_MODULE:read_link(Alias),
{ok, Name} = ?FILE_MODULE:read_link_all(Alias),
%% If all is good, delete dir again (avoid hanging dir on windows)
rm_rf(?FILE_MODULE,NewDir),
ok
end,
[] = flush(),
Result.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
copy(Config) when is_list(Config) ->
RootDir = proplists:get_value(priv_dir, Config),
%% Create a text file.
Name1 = filename:join(RootDir, atom_to_list(?MODULE)++"_copy_1.txt"),
Line = "The quick brown fox jumps over a lazy dog. 0123456789\n",
Len = length(Line),
{ok, Handle1} = ?FILE_MODULE:open(Name1, [write]),
{_, Size1} =
iterate({0, 0},
done,
fun({_, S}) when S >= 128*1024 ->
done;
({N, S}) ->
H = integer_to_list(N),
ok = ?FILE_MODULE:write(Handle1, [H, " ", Line]),
{N + 1, S + length(H) + 1 + Len}
end),
?FILE_MODULE:close(Handle1),
%% Make a copy
Name2 = filename:join(RootDir, atom_to_list(?MODULE)++"_copy_2.txt"),
{ok, Size1} = ?FILE_MODULE:copy(Name1, Name2),
%% Concatenate 1
Name3 = filename:join(RootDir, atom_to_list(?MODULE)++"_copy_3.txt"),
{ok, Handle3} = ?FILE_MODULE:open(Name3, [raw, write, binary]),
{ok, Size1} = ?FILE_MODULE:copy(Name1, Handle3),
{ok, Handle2} = ?FILE_MODULE:open(Name2, [read, binary]),
{ok, Size1} = ?FILE_MODULE:copy(Handle2, Handle3),
ok = ?FILE_MODULE:close(Handle3),
ok = ?FILE_MODULE:close(Handle2),
%% Concatenate 2
Name4 = filename:join(RootDir, atom_to_list(?MODULE)++"_copy_4.txt"),
{ok, Handle4} = ?FILE_MODULE:open(Name4, [write, binary]),
{ok, Size1} = ?FILE_MODULE:copy(Name1, Handle4),
{ok, Handle5} = ?FILE_MODULE:open(Name2, [raw, read, binary]),
{ok, Size1} = ?FILE_MODULE:copy(Handle5, Handle4),
ok = ?FILE_MODULE:close(Handle5),
ok = ?FILE_MODULE:close(Handle4),
%% %% Just for test of the test
%% {ok, Handle2q} = ?FILE_MODULE:open(Name2, [write, append]),
%% ok = ?FILE_MODULE:write(Handle2q, "q"),
%% ok = ?FILE_MODULE:close(Handle2q),
%% Compare the files
{ok, Handle1a} = ?FILE_MODULE:open(Name1, [raw, read]),
{ok, Handle2a} = ?FILE_MODULE:open(Name2, [raw, read]),
true = stream_cmp(fd_stream_factory([Handle1a]),
fd_stream_factory([Handle2a])),
{ok, 0} = ?FILE_MODULE:position(Handle1a, 0),
{ok, 0} = ?FILE_MODULE:position(Handle2a, 0),
{ok, Handle3a} = ?FILE_MODULE:open(Name3, [raw, read]),
true = stream_cmp(fd_stream_factory([Handle1a, Handle2a]),
fd_stream_factory([Handle2a])),
ok = ?FILE_MODULE:close(Handle1a),
ok = ?FILE_MODULE:close(Handle2a),
ok = ?FILE_MODULE:close(Handle3a),
[] = flush(),
ok.
fd_stream_factory([]) ->
[];
fd_stream_factory([Fd | T] = L) ->
fun() ->
case ?FILE_MODULE:read(Fd, 8192) of
{ok, Data} when is_binary(Data) ->
binary_to_list(Data) ++ fd_stream_factory(L);
{ok, Data} when is_list(Data) ->
Data ++ fd_stream_factory(L);
eof ->
fd_stream_factory(T);
{error, _} = Error ->
Error
end
end.
stream_cmp(F1, F2) when is_function(F1), is_function(F2) ->
stream_cmp(F1(), F2());
stream_cmp(F, X) when is_function(F) ->
stream_cmp(F(), X);
stream_cmp(X, F) when is_function(F) ->
stream_cmp(X, F());
stream_cmp({error, _} = Error, _) ->
Error;
stream_cmp(_, {error, _} = Error) ->
Error;
stream_cmp([], []) ->
true;
stream_cmp([], [_|_]) ->
false;
stream_cmp([_|_], []) ->
false;
stream_cmp([H | T1], [H | T2]) ->
stream_cmp(T1, T2).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Test the get_cwd(), open(), and copy() file server calls.
new_slave(_RootDir, Cwd) ->
L = "qwertyuiopasdfghjklzxcvbnm",
N = length(L),
{ok, Cwd} = ?FILE_MODULE:get_cwd(),
{error, enotsup} = ?FILE_MODULE:get_cwd("C:"), % Unix only testcase
{ok, FD1} = ?FILE_MODULE:open("file1.txt", write),
ok = ?FILE_MODULE:close(FD1),
{ok, FD2} = ?FILE_MODULE:open("file1.txt",
[write, append,
binary, compressed,
delayed_write,
{delayed_write, 0, 0},
read_ahead,
{read_ahead, 0}]),
ok = ?FILE_MODULE:write(FD2, L),
ok = ?FILE_MODULE:close(FD2),
{ok, N2} = ?FILE_MODULE:copy("file1.txt", "file2.txt"),
io:format("Size ~p, compressed ~p.~n", [N, N2]),
{ok, FD3} = ?FILE_MODULE:open("file2.txt",
[binary, compressed]),
%% The file_io_server will translate the binary into a list
{ok, L} = ?FILE_MODULE:read(FD3, N+1),
ok = ?FILE_MODULE:close(FD3),
%%
ok = ?FILE_MODULE:delete("file1.txt"),
ok = ?FILE_MODULE:delete("file2.txt"),
[] = flush(),
ok.
%% Test the get_cwd() and open() file server calls.
old_slave(_RootDir, Cwd) ->
L = "qwertyuiopasdfghjklzxcvbnm",
N = length(L),
{ok, Cwd} = ?FILE_MODULE:get_cwd(),
{error, enotsup} = ?FILE_MODULE:get_cwd("C:"), % Unix only testcase
{ok, FD1} = ?FILE_MODULE:open("file1.txt", write),
ok = ?FILE_MODULE:close(FD1),
{ok, FD2} = ?FILE_MODULE:open("file1.txt",
[write, binary, compressed]),
ok = ?FILE_MODULE:write(FD2, L),
ok = ?FILE_MODULE:close(FD2),
{ok, FD3} = ?FILE_MODULE:open("file1.txt", [write, append]),
ok = ?FILE_MODULE:close(FD3),
{ok, FD4} = ?FILE_MODULE:open("file1.txt",
[binary, compressed]),
%% The file_io_server will translate the binary into a list
{ok, L} = ?FILE_MODULE:read(FD4, N+1),
ok = ?FILE_MODULE:close(FD4),
%%
ok = ?FILE_MODULE:delete("file1.txt"),
[] = flush(),
ok.
run_test(Test, Args) ->
case (catch apply(?MODULE, Test, Args)) of
{'EXIT', _} = Exit ->
{done, Exit, get(test_server_loc)};
Result ->
{done, Result}
end.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Tests the file open option {delayed_write, Size, Delay}.
delayed_write(Config) when is_list(Config) ->
RootDir = proplists:get_value(priv_dir, Config),
File = filename:join(RootDir,
atom_to_list(?MODULE)++"_delayed_write.txt"),
Data1 = "asdfghjkl",
Data2 = "qwertyuio",
Data3 = "zxcvbnm,.",
Size = length(Data1),
Size = length(Data2),
Size = length(Data3),
Data1Data1 = Data1++Data1,
Data1Data1Data1 = Data1Data1++Data1,
Data1Data1Data1Data1 = Data1Data1++Data1Data1,
%%
%% Test caching and normal close of non-raw file
{ok, Fd1} =
?FILE_MODULE:open(File, [write, {delayed_write, Size+1, 400}]),
ok = ?FILE_MODULE:write(Fd1, Data1),
%% Wait for a reasonable amount of time to check whether the write was
%% practically instantaneous or actually delayed.
timer:sleep(100),
{ok, Fd2} = ?FILE_MODULE:open(File, [read]),
eof = ?FILE_MODULE:read(Fd2, 1),
ok = ?FILE_MODULE:write(Fd1, Data1), % Data flush on size
timer:sleep(100),
{ok, Data1Data1} = ?FILE_MODULE:pread(Fd2, bof, 2*Size+1),
ok = ?FILE_MODULE:write(Fd1, Data1),
timer:sleep(500), % Wait until data flush on timeout
{ok, Data1Data1Data1} = ?FILE_MODULE:pread(Fd2, bof, 3*Size+1),
ok = ?FILE_MODULE:write(Fd1, Data1),
ok = ?FILE_MODULE:close(Fd1), % Data flush on close
timer:sleep(100),
{ok, Data1Data1Data1Data1} = ?FILE_MODULE:pread(Fd2, bof, 4*Size+1),
ok = ?FILE_MODULE:close(Fd2),
%%
%% Test implicit close through exit by file owning process,
%% raw file, default parameters.
Parent = self(),
Fun = fun() ->
Child = self(),
Test =
fun () ->
{ok, Fd} = ?FILE_MODULE:open(File,
[raw, write, delayed_write]),
ok = ?FILE_MODULE:write(Fd, Data1),
Parent ! {Child, wrote},
receive
{Parent, continue, Reason} ->
{ok, Reason}
end
end,
case (catch Test()) of
{ok, Reason} -> exit(Reason);
Unknown ->
exit({Unknown, get(test_server_loc)})
end
end,
Child1 = spawn(Fun),
Mref1 = erlang:monitor(process, Child1),
receive
{Child1, wrote} ->
ok;
{'DOWN', Mref1, _, _, _} = Down1a ->
ct:fail(Down1a)
end,
timer:sleep(100), % Just in case the file system is slow
{ok, Fd3} = ?FILE_MODULE:open(File, [read]),
eof = ?FILE_MODULE:read(Fd3, 1),
Child1 ! {Parent, continue, normal},
receive
{'DOWN', Mref1, process, Child1, normal} ->
ok;
{'DOWN', Mref1, _, _, _} = Down1b ->
ct:fail(Down1b)
end,
timer:sleep(100), % Just in case the file system is slow
{ok, Data1} = ?FILE_MODULE:pread(Fd3, bof, Size+1),
ok = ?FILE_MODULE:close(Fd3),
%%
%% The same again, but this time with reason 'kill'.
Child2 = spawn(Fun),
Mref2 = erlang:monitor(process, Child2),
receive
{Child2, wrote} ->
ok;
{'DOWN', Mref2, _, _, _} = Down2a ->
ct:fail(Down2a)
end,
timer:sleep(100), % Just in case the file system is slow
{ok, Fd4} = ?FILE_MODULE:open(File, [read]),
eof = ?FILE_MODULE:read(Fd4, 1),
Child2 ! {Parent, continue, kill},
receive
{'DOWN', Mref2, process, Child2, kill} ->
ok;
{'DOWN', Mref2, _, _, _} = Down2b ->
ct:fail(Down2b)
end,
timer:sleep(100), % Just in case the file system is slow
eof = ?FILE_MODULE:pread(Fd4, bof, 1),
ok = ?FILE_MODULE:close(Fd4),
%%
%% Test if file position works with delayed_write
{ok, Fd5} = ?FILE_MODULE:open(File, [raw, read, write,
delayed_write]),
ok = ?FILE_MODULE:truncate(Fd5),
ok = ?FILE_MODULE:write(Fd5, [Data1|Data2]),
{ok, 0} = ?FILE_MODULE:position(Fd5, bof),
ok = ?FILE_MODULE:write(Fd5, [Data3]),
{ok, Data2} = ?FILE_MODULE:read(Fd5, Size+1),
{ok, 0} = ?FILE_MODULE:position(Fd5, bof),
Data3Data2 = Data3++Data2,
{ok, Data3Data2} = ?FILE_MODULE:read(Fd5, 2*Size+1),
ok = ?FILE_MODULE:close(Fd5),
%%
[] = flush(),
ok.
%% Tests file:pid2name/1.
pid2name(Config) when is_list(Config) ->
RootDir = proplists:get_value(priv_dir, Config),
Base = test_server:temp_name(
filename:join(RootDir, "pid2name_")),
Name1 = [Base, '.txt'],
Name2 = Base ++ ".txt",
%%
{ok, Pid} = file:open(Name1, [write]),
{ok, Name2} = file:pid2name(Pid),
undefined = file:pid2name(self()),
ok = file:close(Pid),
ct:sleep(1000),
false = is_process_alive(Pid),
undefined = file:pid2name(Pid),
ok.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Tests the file open option {read_ahead, Size}.
read_ahead(Config) when is_list(Config) ->
RootDir = proplists:get_value(priv_dir, Config),
File = filename:join(RootDir,
atom_to_list(?MODULE)++"_read_ahead.txt"),
Data1 = "asdfghjkl", % Must be
Data2 = "qwertyuio", % same
Data3 = "zxcvbnm,.", % length
Size = length(Data1),
Size = length(Data2),
Size = length(Data3),
%%
%% Test caching of normal non-raw file
{ok, Fd1} = ?FILE_MODULE:open(File, [write]),
ok = ?FILE_MODULE:write(Fd1, [Data1|Data1]),
timer:sleep(1000), % Just in case the file system is slow
{ok, Fd2} = ?FILE_MODULE:open(File, [read, {read_ahead, 2*Size}]),
{ok, Data1} = ?FILE_MODULE:read(Fd2, Size),
ok = ?FILE_MODULE:pwrite(Fd1, Size, Data2),
timer:sleep(1000), % Just in case the file system is slow
{ok, Data1} = ?FILE_MODULE:read(Fd2, Size), % Will read cached data
Data2Data2Data2 = Data2++Data2++Data2,
ok = ?FILE_MODULE:pwrite(Fd1, eof, Data2Data2Data2),
timer:sleep(1000), % Just in case the file system is slow
{ok, Data2Data2Data2} =
?FILE_MODULE:read(Fd2, 3*Size), % Read more than cache buffer
ok = ?FILE_MODULE:close(Fd1),
ok = ?FILE_MODULE:close(Fd2),
%% Test caching of raw file and default parameters
{ok, Fd3} = ?FILE_MODULE:open(File, [raw, write]),
ok = ?FILE_MODULE:write(Fd3, [Data1|Data1]),
timer:sleep(1000), % Just in case the file system is slow
{ok, Fd4} = ?FILE_MODULE:open(File, [raw, read, read_ahead]),
{ok, Data1} = ?FILE_MODULE:read(Fd4, Size),
ok = ?FILE_MODULE:pwrite(Fd3, Size, Data2),
timer:sleep(1000), % Just in case the file system is slow
{ok, Data1} = ?FILE_MODULE:read(Fd4, Size), % Will read cached data
ok = ?FILE_MODULE:close(Fd3),
ok = ?FILE_MODULE:close(Fd4),
%% Test if the file position works in combination with read_ahead
{ok, Fd5} = ?FILE_MODULE:open(File, [raw, read, write, read_ahead]),
ok = ?FILE_MODULE:truncate(Fd5),
ok = ?FILE_MODULE:write(Fd5, [Data1,Data1|Data3]),
{ok, 0} = ?FILE_MODULE:position(Fd5, bof),
{ok, Data1} = ?FILE_MODULE:read(Fd5, Size),
ok = ?FILE_MODULE:write(Fd5, Data2),
{ok, 0} = ?FILE_MODULE:position(Fd5, bof),
Data1Data2Data3 = Data1++Data2++Data3,
{ok, Data1Data2Data3} = ?FILE_MODULE:read(Fd5, 3*Size+1),
ok = ?FILE_MODULE:close(Fd5),
%% Ensure that a read that draws from both the buffer and the file won't
%% return anything wonky.
SplitData = << <<(I rem 256)>> || I <- lists:seq(1, 1024) >>,
file:write_file(File, SplitData),
{ok, Fd6} = ?FILE_MODULE:open(File, [raw, read, binary, {read_ahead, 256}]),
{ok, <<1>>} = file:read(Fd6, 1),
<<1, Shifted:512/binary, _Rest/binary>> = SplitData,
{ok, Shifted} = file:read(Fd6, 512),
%%
[] = flush(),
ok.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Tests the segmenting of large reads.
segment_read(Config) when is_list(Config) ->
Name = filename:join(proplists:get_value(priv_dir, Config),
?MODULE_STRING ++ "_segment_read"),
SegSize = 256*1024,
SegCnt = SegSize div 4,
Cnt = 4 * SegCnt,
ok = create_file(Name, Cnt),
%%
%% read_file/1
%%
{ok, Bin} = ?FILE_MODULE:read_file(Name),
true = verify_bin(Bin, 0, Cnt),
%%
%% read/2
%%
%% Not segmented
{ok, FD1} = ?FILE_MODULE:open(Name, [read, raw, binary]),
{ok, B1a} = ?FILE_MODULE:read(FD1, SegSize),
{ok, B1b} = ?FILE_MODULE:read(FD1, SegSize),
{ok, B1c} = ?FILE_MODULE:read(FD1, SegSize),
{ok, B1d} = ?FILE_MODULE:read(FD1, SegSize),
ok = ?FILE_MODULE:close(FD1),
true = verify_bin(B1a, 0*SegCnt, SegCnt),
true = verify_bin(B1b, 1*SegCnt, SegCnt),
true = verify_bin(B1c, 2*SegCnt, SegCnt),
true = verify_bin(B1d, 3*SegCnt, SegCnt),
%%
%% Segmented
{ok, FD2} = ?FILE_MODULE:open(Name, [read, raw, binary]),
{ok, B2a} = ?FILE_MODULE:read(FD2, 1*SegSize),
{ok, B2b} = ?FILE_MODULE:read(FD2, 2*SegSize),
{ok, B2c} = ?FILE_MODULE:read(FD2, 2*SegSize),
ok = ?FILE_MODULE:close(FD2),
true = verify_bin(B2a, 0*SegCnt, 1*SegCnt),
true = verify_bin(B2b, 1*SegCnt, 2*SegCnt),
true = verify_bin(B2c, 3*SegCnt, 1*SegCnt),
%%
%% pread/3
%%
{ok, FD3} = ?FILE_MODULE:open(Name, [read, raw, binary]),
%%
%% Not segmented
{ok, B3d} = ?FILE_MODULE:pread(FD3, 3*SegSize, SegSize),
{ok, B3c} = ?FILE_MODULE:pread(FD3, 2*SegSize, SegSize),
{ok, B3b} = ?FILE_MODULE:pread(FD3, 1*SegSize, SegSize),
{ok, B3a} = ?FILE_MODULE:pread(FD3, 0*SegSize, SegSize),
true = verify_bin(B3a, 0*SegCnt, SegCnt),
true = verify_bin(B3b, 1*SegCnt, SegCnt),
true = verify_bin(B3c, 2*SegCnt, SegCnt),
true = verify_bin(B3d, 3*SegCnt, SegCnt),
%%
%% Segmented
{ok, B3g} = ?FILE_MODULE:pread(FD3, 3*SegSize, 2*SegSize),
{ok, B3f} = ?FILE_MODULE:pread(FD3, 1*SegSize, 2*SegSize),
{ok, B3e} = ?FILE_MODULE:pread(FD3, 0*SegSize, 1*SegSize),
true = verify_bin(B3e, 0*SegCnt, 1*SegCnt),
true = verify_bin(B3f, 1*SegCnt, 2*SegCnt),
true = verify_bin(B3g, 3*SegCnt, 1*SegCnt),
%%
ok = ?FILE_MODULE:close(FD3),
%%
%% pread/2
%%
{ok, FD5} = ?FILE_MODULE:open(Name, [read, raw, binary]),
%%
%% +---+---+---+---+
%% | 4 | 3 | 2 | 1 |
%% +---+---+---+---+
%% < ^ >
{ok, [B5d, B5c, B5b, B5a]} =
?FILE_MODULE:pread(FD5, [{3*SegSize, SegSize},
{2*SegSize, SegSize},
{1*SegSize, SegSize},
{0*SegSize, SegSize}]),
true = verify_bin(B5a, 0*SegCnt, SegCnt),
true = verify_bin(B5b, 1*SegCnt, SegCnt),
true = verify_bin(B5c, 2*SegCnt, SegCnt),
true = verify_bin(B5d, 3*SegCnt, SegCnt),
%%
%% +---+-------+-------+
%% | 3 | 2 | 1 |
%% +---+-------+-------+
%% < ^ ^ >
{ok, [B5g, B5f, B5e]} =
?FILE_MODULE:pread(FD5, [{3*SegSize, 2*SegSize},
{1*SegSize, 2*SegSize},
{0*SegSize, 1*SegSize}]),
true = verify_bin(B5e, 0*SegCnt, 1*SegCnt),
true = verify_bin(B5f, 1*SegCnt, 2*SegCnt),
true = verify_bin(B5g, 3*SegCnt, 1*SegCnt),
%%
%%
%% +-------+-----------+
%% | 2 | 1 |
%% +-------+-----------+
%% < ^ ^ >
{ok, [B5i, B5h]} =
?FILE_MODULE:pread(FD5, [{2*SegSize, 3*SegSize},
{0*SegSize, 2*SegSize}]),
true = verify_bin(B5h, 0*SegCnt, 2*SegCnt),
true = verify_bin(B5i, 2*SegCnt, 2*SegCnt),
%%
%% +-------+---+---+
%% | 3 | 2 | 1 |
%% +-------+---+---+
%% < ^ ^ >
{ok, [B5l, B5k, B5j]} =
?FILE_MODULE:pread(FD5, [{3*SegSize, 1*SegSize},
{2*SegSize, 1*SegSize},
{0*SegSize, 2*SegSize}]),
true = verify_bin(B5j, 0*SegCnt, 2*SegCnt),
true = verify_bin(B5k, 2*SegCnt, 1*SegCnt),
true = verify_bin(B5l, 3*SegCnt, 1*SegCnt),
%%
%% Real time response time test.
%%
Req = lists:flatten(lists:duplicate(17,
[{2*SegSize, 2*SegSize},
{0*SegSize, 2*SegSize}])),
{{ok, _}, Comment} =
response_analysis(?FILE_MODULE, pread, [FD5, Req]),
ok = ?FILE_MODULE:close(FD5),
%%
[] = flush(),
{comment, Comment}.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Tests the segmenting of large writes.
segment_write(Config) when is_list(Config) ->
Name = filename:join(proplists:get_value(priv_dir, Config),
?MODULE_STRING ++ "_segment_write"),
SegSize = 256*1024,
SegCnt = SegSize div 4,
Cnt = 4 * SegCnt,
Bin = create_bin(0, Cnt),
%%
%% write/2
%%
%% Not segmented
{ok, FD1} = ?FILE_MODULE:open(Name, [write, raw, binary]),
ok = ?FILE_MODULE:write(FD1, subbin(Bin, 0*SegSize, 1*SegSize)),
ok = ?FILE_MODULE:write(FD1, subbin(Bin, 1*SegSize, 1*SegSize)),
ok = ?FILE_MODULE:write(FD1, subbin(Bin, 2*SegSize, 1*SegSize)),
ok = ?FILE_MODULE:write(FD1, subbin(Bin, 3*SegSize, 1*SegSize)),
ok = ?FILE_MODULE:close(FD1),
true = verify_file(Name, Cnt),
%%
%% Segmented
{ok, FD2} = ?FILE_MODULE:open(Name, [write, raw, binary]),
ok = ?FILE_MODULE:write(FD2, subbin(Bin, 0*SegSize, 1*SegSize)),
ok = ?FILE_MODULE:write(FD2, subbin(Bin, 1*SegSize, 2*SegSize)),
ok = ?FILE_MODULE:write(FD2, subbin(Bin, 3*SegSize, 1*SegSize)),
ok = ?FILE_MODULE:close(FD2),
true = verify_file(Name, Cnt),
%%
%% +---+---+---+---+
%% | | | | |
%% +---+---+---+---+
%% < ^ >
ok = write_file(Name, [subbin(Bin, 0*SegSize, 1*SegSize),
subbin(Bin, 1*SegSize, 1*SegSize),
subbin(Bin, 2*SegSize, 1*SegSize),
subbin(Bin, 3*SegSize, 1*SegSize)]),
true = verify_file(Name, Cnt),
%%
%% +---+-------+---+
%% | | | |
%% +---+-------+---+
%% < ^ ^ >
ok = write_file(Name, [subbin(Bin, 0*SegSize, 1*SegSize),
subbin(Bin, 1*SegSize, 2*SegSize),
subbin(Bin, 3*SegSize, 1*SegSize)]),
true = verify_file(Name, Cnt),
%%
%% +-------+-------+
%% | | |
%% +-------+-------+
%% < ^ ^ >
ok = write_file(Name, [subbin(Bin, 0*SegSize, 2*SegSize),
subbin(Bin, 2*SegSize, 2*SegSize)]),
true = verify_file(Name, Cnt),
%%
%% +-------+---+---+
%% | | | |
%% +-------+---+---+
%% < ^ ^ >
ok = write_file(Name, [subbin(Bin, 0*SegSize, 2*SegSize),
subbin(Bin, 2*SegSize, 1*SegSize),
subbin(Bin, 3*SegSize, 1*SegSize)]),
true = verify_file(Name, Cnt),
%%
%% pwrite/3
%%
%% Not segmented
{ok, FD3} = ?FILE_MODULE:open(Name, [write, raw, binary]),
ok = ?FILE_MODULE:pwrite(FD3, 3*SegSize,
subbin(Bin, 3*SegSize, 1*SegSize)),
ok = ?FILE_MODULE:pwrite(FD3, 2*SegSize,
subbin(Bin, 2*SegSize, 1*SegSize)),
ok = ?FILE_MODULE:pwrite(FD3, 1*SegSize,
subbin(Bin, 1*SegSize, 1*SegSize)),
ok = ?FILE_MODULE:pwrite(FD3, 0*SegSize,
subbin(Bin, 0*SegSize, 1*SegSize)),
ok = ?FILE_MODULE:close(FD3),
true = verify_file(Name, Cnt),
%%
%% Segmented
{ok, FD4} = ?FILE_MODULE:open(Name, [write, raw, binary]),
ok = ?FILE_MODULE:pwrite(FD4, 3*SegSize,
subbin(Bin, 3*SegSize, 1*SegSize)),
ok = ?FILE_MODULE:pwrite(FD4, 1*SegSize,
subbin(Bin, 1*SegSize, 2*SegSize)),
ok = ?FILE_MODULE:pwrite(FD4, 0*SegSize,
subbin(Bin, 0*SegSize, 1*SegSize)),
ok = ?FILE_MODULE:close(FD4),
true = verify_file(Name, Cnt),
%%
%% pwrite/2
%%
%% Not segmented
{ok, FD5} = ?FILE_MODULE:open(Name, [write, raw, binary]),
ok = ?FILE_MODULE:pwrite(FD5, [{3*SegSize,
subbin(Bin, 3*SegSize, 1*SegSize)}]),
ok = ?FILE_MODULE:pwrite(FD5, [{2*SegSize,
subbin(Bin, 2*SegSize, 1*SegSize)}]),
ok = ?FILE_MODULE:pwrite(FD5, [{1*SegSize,
subbin(Bin, 1*SegSize, 1*SegSize)}]),
ok = ?FILE_MODULE:pwrite(FD5, [{0*SegSize,
subbin(Bin, 0*SegSize, 1*SegSize)}]),
ok = ?FILE_MODULE:close(FD5),
true = verify_file(Name, Cnt),
%%
%% Segmented
{ok, FD6} = ?FILE_MODULE:open(Name, [write, raw, binary]),
ok = ?FILE_MODULE:pwrite(FD6, [{3*SegSize,
subbin(Bin, 3*SegSize, 1*SegSize)}]),
ok = ?FILE_MODULE:pwrite(FD6, [{1*SegSize,
subbin(Bin, 1*SegSize, 2*SegSize)}]),
ok = ?FILE_MODULE:pwrite(FD6, [{0*SegSize,
subbin(Bin, 0*SegSize, 1*SegSize)}]),
ok = ?FILE_MODULE:close(FD6),
true = verify_file(Name, Cnt),
%%
%% +---+---+---+---+
%% | 4 | 3 | 2 | 1 |
%% +---+---+---+---+
%% < ^ >
ok = pwrite_file(Name, [{3*SegSize,
subbin(Bin, 3*SegSize, 1*SegSize)},
{2*SegSize,
subbin(Bin, 2*SegSize, 1*SegSize)},
{1*SegSize,
subbin(Bin, 1*SegSize, 1*SegSize)},
{0*SegSize,
subbin(Bin, 0*SegSize, 1*SegSize)}]),
true = verify_file(Name, Cnt),
%%
%% +---+-------+---+
%% | 3 | 2 | 1 |
%% +---+-------+---+
%% < ^ ^ >
ok = pwrite_file(Name, [{3*SegSize,
subbin(Bin, 3*SegSize, 1*SegSize)},
{1*SegSize,
subbin(Bin, 1*SegSize, 2*SegSize)},
{0*SegSize,
subbin(Bin, 0*SegSize, 1*SegSize)}]),
true = verify_file(Name, Cnt),
%%
%% +-------+-------+
%% | 2 | 1 |
%% +-------+-------+
%% < ^ ^ >
ok = pwrite_file(Name, [{2*SegSize,
subbin(Bin, 2*SegSize, 2*SegSize)},
{0*SegSize,
subbin(Bin, 0*SegSize, 2*SegSize)}]),
true = verify_file(Name, Cnt),
%%
%% +-------+---+---+
%% | 3 | 2 | 1 |
%% +-------+---+---+
%% < ^ ^ >
ok = pwrite_file(Name, [{3*SegSize,
subbin(Bin, 3*SegSize, 1*SegSize)},
{2*SegSize,
subbin(Bin, 2*SegSize, 1*SegSize)},
{0*SegSize,
subbin(Bin, 0*SegSize, 2*SegSize)}]),
true = verify_file(Name, Cnt),
%%
%% Real time response time test.
%%
{ok, FD7} = ?FILE_MODULE:open(Name, [write, raw, binary]),
Req = lists:flatten(lists:duplicate(17,
[{2*SegSize,
subbin(Bin, 2*SegSize, 2*SegSize)},
{0*SegSize,
subbin(Bin, 0*SegSize, 2*SegSize)}])),
{ok, Comment} =
response_analysis(?FILE_MODULE, pwrite, [FD7, Req]),
ok = ?FILE_MODULE:close(FD7),
%%
[] = flush(),
{comment, Comment}.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Test Dets special indirect pread.
ipread(Config) when is_list(Config) ->
Dir = proplists:get_value(priv_dir, Config),
ok = ipread_int(Dir, [raw, binary]),
ok = ipread_int(Dir, [raw]),
ok = ipread_int(Dir, [binary]),
ok = ipread_int(Dir, []),
ok = ipread_int(Dir, [ram, binary]),
ok = ipread_int(Dir, [ram]),
%%
[] = flush(),
ok.
ipread_int(Dir, ModeList) ->
Name =
filename:join(Dir,
lists:flatten([?MODULE_STRING, "_ipread",
lists:map(fun (X) ->
["_", atom_to_list(X)]
end,
ModeList)])),
io:format("ipread_int<~p, ~p>~n", [Name, ModeList]),
{Conv, Sizeof} =
case lists:member(binary, ModeList) of
true ->
{fun (Bin) when is_binary(Bin) -> Bin;
(List) when is_list(List) -> list_to_binary(List)
end,
fun erlang:byte_size/1};
false ->
{fun (Bin) when is_binary(Bin) -> binary_to_list(Bin);
(List) when is_list(List) -> List
end,
fun erlang:length/1}
end,
Pos = 4711,
Data = Conv("THE QUICK BROWN FOX JUMPS OVER A LAZY DOG"),
Size = Sizeof(Data),
Init = Conv(" "),
SizeInit = Sizeof(Init),
Head = Conv(<>),
Filler = Conv(bytes($ , Pos-SizeInit-Sizeof(Head))),
Size1 = Size+1,
SizePos = Size+Pos,
%%
{ok, FD} = ?FILE_MODULE:open(Name, [write, read | ModeList]),
ok = ?FILE_MODULE:truncate(FD),
ok = ?FILE_MODULE:write(FD, Init),
ok = ?FILE_MODULE:write(FD, Head),
ok = ?FILE_MODULE:write(FD, Filler),
ok = ?FILE_MODULE:write(FD, Data),
%% Correct read
{ok, {Size, Pos, Data}} =
?FILE_MODULE:ipread_s32bu_p32bu(FD, SizeInit, infinity),
%% Invalid header - size > max
eof =
?FILE_MODULE:ipread_s32bu_p32bu(FD, SizeInit, Size-1),
%% Data block protudes over eof
ok =
?FILE_MODULE:pwrite(FD, SizeInit,
<>),
{ok, {Size1, Pos, Data}} =
?FILE_MODULE:ipread_s32bu_p32bu(FD, SizeInit, Size1),
%% Data block outside file
ok =
?FILE_MODULE:pwrite(FD, SizeInit,
<>),
{ok, {Size, SizePos, eof}} =
?FILE_MODULE:ipread_s32bu_p32bu(FD, SizeInit, Size),
%% Zero size
ok =
?FILE_MODULE:pwrite(FD, SizeInit,
<<0:32/big-unsigned,
Pos:32/big-unsigned>>),
{ok, {0, Pos, eof}} =
?FILE_MODULE:ipread_s32bu_p32bu(FD, SizeInit, Size),
%% Invalid header - protudes over eof
eof =
?FILE_MODULE:ipread_s32bu_p32bu(FD,
Pos+Size-(Sizeof(Head)-1),
infinity),
%% Header not even in file
eof =
?FILE_MODULE:ipread_s32bu_p32bu(FD, Pos+Size, infinity),
%%
ok = ?FILE_MODULE:close(FD),
ok.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Tests interleaved read and writes.
interleaved_read_write(Config) when is_list(Config) ->
Dir = proplists:get_value(priv_dir, Config),
File =
filename:join(Dir, ?MODULE_STRING++"interleaved_read_write.txt"),
{ok,F1} = ?FILE_MODULE:open(File, [write]),
ok = ?FILE_MODULE:write(F1, "data---r1."), % 10 chars each
ok = ?FILE_MODULE:write(F1, "data---r2."),
ok = ?FILE_MODULE:write(F1, "data---r3."),
ok = ?FILE_MODULE:close(F1),
{ok,F2} = ?FILE_MODULE:open(File, [read, write]),
{ok, "data---r1."} = ?FILE_MODULE:read(F2, 10),
ok = ?FILE_MODULE:write(F2, "data---w2."),
ok = ?FILE_MODULE:close(F2),
{ok,F3} = ?FILE_MODULE:open(File, [read]),
{ok, "data---r1."} = ?FILE_MODULE:read(F3, 10),
{ok, "data---w2."} = ?FILE_MODULE:read(F3, 10),
{ok, "data---r3."} = ?FILE_MODULE:read(F3, 10),
eof = ?FILE_MODULE:read(F3, 1),
ok = ?FILE_MODULE:close(F2),
%%
[] = flush(),
ok.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% OTP-5814. eval/consult/script return correct line numbers.
otp_5814(Config) when is_list(Config) ->
PrivDir = proplists:get_value(priv_dir, Config),
File = filename:join(PrivDir, "otp_5814"),
Path = [PrivDir],
ok = file:write_file(File, <<"{a,b,c}.
a.
b.
c.
{d,e,
[}.">>),
{error, {6,erl_parse,_}} = file:eval(File),
{error, {6,erl_parse,_}} = file:consult(File),
{error, {6,erl_parse,_}} = file:path_consult(Path, File),
{error, {6,erl_parse,_}} = file:path_eval(Path, File),
{error, {6,erl_parse,_}} = file:script(File),
{error, {6,erl_parse,_}} = file:path_script(Path, File),
ok = file:write_file(File, <<>>),
{error, {1,file,undefined_script}} = file:path_script(Path, File),
%% The error is not propagated...
ok = file:write_file(File, <<"a.
b.
1/0.">>),
{error, {3, file, {error, badarith, _}}} = file:eval(File),
ok = file:write_file(File, <<"erlang:raise(throw, apa, []).">>),
{error, {1, file, {throw, apa, _}}} = file:eval(File),
file:delete(File),
ok.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% OTP-10852. +fnu and latin1 filenames.
otp_10852(Config) when is_list(Config) ->
Node = start_node(erl_pp_helper, "+fnu"),
Dir = proplists:get_value(priv_dir, Config),
B = filename:join(Dir, <<"\xE4">>),
ok = rpc_call(Node, get_cwd, [B]),
{error, no_translation} = rpc_call(Node, set_cwd, [B]),
ok = rpc_call(Node, delete, [B]),
ok = rpc_call(Node, rename, [B, B]),
ok = rpc_call(Node, read_file_info, [B]),
ok = rpc_call(Node, read_link_info, [B]),
ok = rpc_call(Node, read_link, [B]),
ok = rpc_call(Node, write_file_info, [B,#file_info{}]),
ok = rpc_call(Node, list_dir, [B]),
ok = rpc_call(Node, list_dir_all, [B]),
ok = rpc_call(Node, read_file, [B]),
ok = rpc_call(Node, make_link, [B,B]),
case rpc_call(Node, make_symlink, [B,B]) of
ok -> ok;
{error, E} when (E =:= enotsup) or (E =:= eperm) ->
{win32,_} = os:type()
end,
ok = rpc_call(Node, delete, [B]),
ok = rpc_call(Node, make_dir, [B]),
ok = rpc_call(Node, del_dir, [B]),
ok = rpc_call(Node, write_file, [B,B]),
{ok, Fd} = rpc_call(Node, open, [B,[read]]),
ok = rpc_call(Node, close, [Fd]),
{ok,0} = rpc_call(Node, copy, [B,B]),
{ok, Fd2, B} = rpc_call(Node, path_open, [["."], B, [read]]),
ok = rpc_call(Node, close, [Fd2]),
true = test_server:stop_node(Node),
ok.
rpc_call(N, F, As) ->
case rpc:call(N, ?FILE_MODULE, F, As) of
{error, enotsup} -> ok;
{error, enoent} -> ok;
{error, badarg} -> ok;
Else -> Else
end.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
large_file() ->
[{timetrap,{minutes,20}}].
%% Tests positioning in large files (> 4G).
large_file(Config) when is_list(Config) ->
run_large_file_test(Config,
fun(Name) -> do_large_file(Name) end,
"_large_file").
do_large_file(Name) ->
S = "1234567890",
L = length(S),
R = lists:reverse(S),
P = 1 bsl 32,
Ss = lists:sort(S),
Rs = lists:reverse(Ss),
{ok,F} = ?FILE_MODULE:open(Name, [raw,read,write]),
ok = ?FILE_MODULE:write(F, S),
{ok,P} = ?FILE_MODULE:position(F, P),
ok = ?FILE_MODULE:write(F, R),
{ok,0} = ?FILE_MODULE:position(F, bof),
{ok,S} = ?FILE_MODULE:read(F, L),
{ok,P} = ?FILE_MODULE:position(F, {eof,-L}),
{ok,R} = ?FILE_MODULE:read(F, L+1),
{ok,S} = ?FILE_MODULE:pread(F, 0, L),
{ok,R} = ?FILE_MODULE:pread(F, P, L+1),
ok = ?FILE_MODULE:pwrite(F, 0, Ss),
ok = ?FILE_MODULE:pwrite(F, P, Rs),
{ok,0} = ?FILE_MODULE:position(F, bof),
{ok,Ss} = ?FILE_MODULE:read(F, L),
{ok,P} = ?FILE_MODULE:position(F, {eof,-L}),
{ok,Rs} = ?FILE_MODULE:read(F, L+1),
ok = ?FILE_MODULE:close(F),
%% Reopen the file with 'append'; used to fail on Windows causing
%% writes to go to the beginning of the file for files > 4GB.
PL = P + L,
PLL = PL + L,
{ok,F1} = ?FILE_MODULE:open(Name, [raw,read,write,append]),
ok = ?FILE_MODULE:write(F1, R),
{ok,PLL} = ?FILE_MODULE:position(F1, {cur,0}),
{ok,Rs} = ?FILE_MODULE:pread(F1, P, L),
{ok,PL} = ?FILE_MODULE:position(F1, {eof,-L}),
{ok,R} = ?FILE_MODULE:read(F1, L+1),
ok = ?FILE_MODULE:close(F1),
ok.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
large_write() ->
[{timetrap,{minutes,20}}].
large_write(Config) when is_list(Config) ->
run_large_file_test(Config,
fun(Name) -> do_large_write(Name) end,
"_large_write").
do_large_write(Name) ->
Memsize = memsize(),
io:format("Memsize = ~w Bytes~n", [Memsize]),
case {erlang:system_info(wordsize),Memsize} of
{4,_} ->
{skip,"Needs a 64-bit emulator"};
{8,N} when N < 6 bsl 30 ->
{skip,
"This machine has < 6 GB memory: "
++integer_to_list(N)};
{8,_} ->
Size = 4*1024*1024*1024+1,
Bin = <<0:Size/unit:8>>,
ok = file:write_file(Name, Bin),
{ok,#file_info{size=Size}} = file:read_file_info(Name),
ok
end.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Benchmarks
%%
%% Note that we only measure the time it takes to run the isolated file
%% operations and that the actual test runtime can differ significantly,
%% especially on the write side as the files need to be truncated before
%% writing.
large_writes(Config) when is_list(Config) ->
Modes = [raw, binary],
OpCount = 4096,
Data = <<0:(64 bsl 10)/unit:8>>,
run_write_benchmark(Config, Modes, OpCount, Data).
large_writes_delayed(Config) when is_list(Config) ->
%% Each write is exactly as large as the delay buffer, causing the writes
%% to pass through each time, giving us a decent idea of how much overhead
%% delayed_write adds.
Modes = [raw, binary, {delayed_write, 64 bsl 10, 2000}],
OpCount = 4096,
Data = <<0:(64 bsl 10)/unit:8>>,
run_write_benchmark(Config, Modes, OpCount, Data).
tiny_writes(Config) when is_list(Config) ->
Modes = [raw, binary],
OpCount = 512 bsl 10,
Data = <<0>>,
run_write_benchmark(Config, Modes, OpCount, Data).
tiny_writes_delayed(Config) when is_list(Config) ->
Modes = [raw, binary, {delayed_write, 512 bsl 10, 2000}],
OpCount = 512 bsl 10,
Data = <<0>>,
run_write_benchmark(Config, Modes, OpCount, Data).
%% The read benchmarks assume that "benchmark_scratch_file" has been filled by
%% the write benchmarks.
tiny_reads(Config) when is_list(Config) ->
Modes = [raw, binary],
OpCount = 512 bsl 10,
run_read_benchmark(Config, Modes, OpCount, 1).
tiny_reads_ahead(Config) when is_list(Config) ->
Modes = [raw, binary, {read_ahead, 512 bsl 10}],
OpCount = 512 bsl 10,
run_read_benchmark(Config, Modes, OpCount, 1).
run_write_benchmark(Config, Modes, OpCount, Data) ->
run_benchmark(Config, [write | Modes], OpCount, fun file:write/2, Data).
run_read_benchmark(Config, Modes, OpCount, OpSize) ->
run_benchmark(Config, [read | Modes], OpCount, fun file:read/2, OpSize).
run_benchmark(Config, Modes, OpCount, Fun, Arg) ->
ScratchDir = proplists:get_value(priv_dir, Config),
Path = filename:join(ScratchDir, "benchmark_scratch_file"),
{ok, Fd} = file:open(Path, Modes),
submit_throughput_results(Fun, [Fd, Arg], OpCount).
submit_throughput_results(Fun, Args, Times) ->
MSecs = measure_repeated_file_op(Fun, Args, Times, millisecond),
IOPS = trunc(Times * (1000 / MSecs)),
ct_event:notify(#event{ name = benchmark_data, data = [{value,IOPS}] }),
{comment, io_lib:format("~p IOPS, ~p ms", [IOPS, trunc(MSecs)])}.
measure_repeated_file_op(Fun, Args, Times, Unit) ->
Start = os:perf_counter(Unit),
repeated_apply(Fun, Args, Times),
os:perf_counter(Unit) - Start.
repeated_apply(_F, _Args, Times) when Times =< 0 ->
ok;
repeated_apply(F, Args, Times) ->
erlang:apply(F, Args),
repeated_apply(F, Args, Times - 1).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
response_analysis(Module, Function, Arguments) ->
Parent = self(),
erlang:yield(), % Schedule out before test
Child =
spawn_link(
fun () ->
receive {Parent, start, Ts} -> ok end,
Stat =
iterate(response_stat(response_stat(init, Ts),
micro_ts()),
done,
fun (S) ->
erlang:yield(),
receive
{Parent, stop} ->
done
after 0 ->
response_stat(S, micro_ts())
end
end),
Parent ! {self(), stopped, response_stat(Stat, micro_ts())}
end),
Child ! {Parent, start, micro_ts()},
Result = apply(Module, Function, Arguments),
Child ! {Parent, stop},
{N, Sum, _, M, Max} = receive {Child, stopped, X} -> X end,
Mean_ms = (0.001*Sum) / (N-1),
Max_ms = 0.001 * Max,
Comment =
lists:flatten(
io_lib:format(
"Scheduling interval: Mean = ~.3f ms, "
++"Max = ~.3f ms for no ~p of ~p.~n",
[Mean_ms, Max_ms, M, (N-1)])),
{Result, Comment}.
micro_ts() ->
erlang:monotonic_time(microsecond).
response_stat(init, Ts) ->
{0, 0, Ts, 0, 0};
response_stat({N, Sum, Ts0, M, Max}, Ts) ->
D = Ts - Ts0,
if D > Max ->
{N+1, Sum+D, Ts, N, D};
true ->
{N+1, Sum+D, Ts, M, Max}
end.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% This function is kept just for benchmarking reasons.
%% create_file/2 below is some 44 times faster.
create_file_slow(Name, N) when is_integer(N), N >= 0 ->
{ok, FD} =
?FILE_MODULE:open(Name, [raw, write, delayed_write, binary]),
ok = create_file_slow(FD, 0, N),
ok = ?FILE_MODULE:close(FD),
ok.
create_file_slow(_FD, M, M) ->
ok;
create_file_slow(FD, M, N) ->
ok = ?FILE_MODULE:write(FD, <>),
create_file_slow(FD, M+1, N).
%% Creates a file 'Name' containing 'N' unsigned 32 bit integers
%% from 0 to N-1.
create_file(Name, N) when is_integer(N), N >= 0 ->
{ok, FD} =
?FILE_MODULE:open(Name, [raw, write, delayed_write, binary]),
ok = create_file(FD, 0, N),
ok = ?FILE_MODULE:close(FD),
ok.
create_file(_FD, M, M) ->
ok;
create_file(FD, M, N) when M + 1024 =< N ->
create_file(FD, M, M + 1024, []),
create_file(FD, M + 1024, N);
create_file(FD, M, N) ->
create_file(FD, M, N, []).
create_file(FD, M, M, R) ->
ok = ?FILE_MODULE:write(FD, R);
create_file(FD, M, N0, R) when M + 8 =< N0 ->
N1 = N0-1, N2 = N0-2, N3 = N0-3, N4 = N0-4,
N5 = N0-5, N6 = N0-6, N7 = N0-7, N8 = N0-8,
create_file(FD, M, N8,
[<> | R]);
create_file(FD, M, N0, R) ->
N1 = N0-1,
create_file(FD, M, N1, [<> | R]).
create_bin(M, N) when is_integer(M), is_integer(N), N >= 0, M >= 0 ->
create_bin(M, M+N, []).
create_bin(N, N, R) ->
list_to_binary(R);
create_bin(M, N0, R) when M+8 =< N0 ->
N1 = N0-1, N2 = N0-2, N3 = N0-3, N4 = N0-4,
N5 = N0-5, N6 = N0-6, N7 = N0-7, N8 = N0-8,
create_bin(M, N8,
[<> | R]);
create_bin(M, N0, R) ->
N1 = N0-1,
create_bin(M, N1, [<> | R]).
verify_bin(<<>>, _, 0) ->
true;
verify_bin(<<>>, _, _) ->
false;
verify_bin(Bin, N, Cnt) ->
N0 = N + 0, N1 = N + 1, N2 = N + 2, N3 = N + 3,
N4 = N + 4, N5 = N + 5, N6 = N + 6, N7 = N + 7,
case Bin of
<> ->
verify_bin(B, N+8, Cnt-8);
<> ->
verify_bin(B, N+1, Cnt-1);
_ ->
false
end.
verify_file(Name, N) when is_integer(N), N >= 0 ->
case ?FILE_MODULE:open(Name, [raw, read, binary]) of
{ok, FD} ->
Result = verify_file(FD, 0, 64*1024, N),
ok = ?FILE_MODULE:close(FD),
Result;
Error ->
Error
end.
verify_file(FD, N, _, N) ->
case ?FILE_MODULE:read(FD, 1) of
eof ->
true;
{ok, _} ->
false
end;
verify_file(FD, M, Cnt, N) when M+Cnt =< N ->
case ?FILE_MODULE:read(FD, 4*Cnt) of
{ok, Bin} ->
case verify_bin(Bin, M, Cnt) of
true ->
verify_file(FD, M+Cnt, Cnt, N);
false ->
false
end;
_ ->
false
end;
verify_file(FD, M, _Cnt, N) ->
verify_file(FD, M, N-M, N).
subbin(Bin, M, N) ->
<<_:M/binary, B:N/binary, _/binary>> = Bin,
B.
write_file(Name, Data) ->
case ?FILE_MODULE:open(Name, [raw, write, binary]) of
{ok, FD} ->
Result = ?FILE_MODULE:write(FD, Data),
case {Result, ?FILE_MODULE:close(FD)} of
{ok, R} -> R;
_ -> Result
end;
Error ->
Error
end.
pwrite_file(Name, Data) ->
case ?FILE_MODULE:open(Name, [raw, write, binary]) of
{ok, FD} ->
Result = ?FILE_MODULE:pwrite(FD, Data),
case {Result, ?FILE_MODULE:close(FD)} of
{ok, R} -> R;
_ -> Result
end;
Error ->
Error
end.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Read_line tests
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
read_line_testdata(PrivDir) ->
All0 = [{fun read_line_create0/1,"Testdata1.txt",5,10},
{fun read_line_create1/1,"Testdata2.txt",401,802},
{fun read_line_create2/1,"Testdata3.txt",1,2},
{fun read_line_create3/1,"Testdata4.txt",601,fail},
{fun read_line_create4/1,"Testdata5.txt",601,1002},
{fun read_line_create5/1,"Testdata6.txt",601,1202},
{fun read_line_create6/1,"Testdata7.txt",601,1202},
{fun read_line_create7/1,"Testdata8.txt",4001,8002}],
[ {A,filename:join([PrivDir,B]),C,D} || {A,B,C,D} <- All0 ].
read_line_create_files(TestData) ->
[ Function(File) || {Function,File,_,_} <- TestData ].
read_line_remove_files(TestData) ->
[ file:delete(File) || {_Function,File,_,_} <- TestData ].
%% read_line with ?PRIM_FILE.
read_line_1(Config) when is_list(Config) ->
PrivDir = proplists:get_value(priv_dir, Config),
All = read_line_testdata(PrivDir),
read_line_create_files(All),
[ begin
io:format("read_line_all: ~s~n",[File]),
{X,_} = read_line_all(File),
true
end || {_,File,X,_} <- All ],
[ begin
io:format("read_line_all_alternating: ~s~n",[File]),
{Y,_} = read_line_all_alternating(File),
true
end || {_,File,_,Y} <- All , Y =/= fail],
[ begin
io:format("read_line_all_alternating (failing as should): ~s~n",[File]),
{'EXIT',_} = (catch read_line_all_alternating(File)),
true
end || {_,File,_,Y} <- All , Y =:= fail],
read_line_remove_files(All),
ok.
%% read_line with file.
read_line_2(Config) when is_list(Config) ->
PrivDir = proplists:get_value(priv_dir, Config),
All = read_line_testdata(PrivDir),
read_line_create_files(All),
[ begin
io:format("read_line_all: ~s~n",[File]),
{X,_} = read_line_all2(File),
true
end || {_,File,X,_} <- All ],
[ begin
io:format("read_line_all_alternating: ~s~n",[File]),
{Y,_} = read_line_all_alternating2(File),
true
end || {_,File,_,Y} <- All , Y =/= fail],
[ begin
io:format("read_line_all_alternating (failing as should): ~s~n",[File]),
{'EXIT',_} = (catch read_line_all_alternating2(File)),
true
end || {_,File,_,Y} <- All , Y =:= fail],
read_line_remove_files(All),
ok.
%% read_line with raw file.
read_line_3(Config) when is_list(Config) ->
PrivDir = proplists:get_value(priv_dir, Config),
All = read_line_testdata(PrivDir),
read_line_create_files(All),
[ begin
io:format("read_line_all: ~s~n",[File]),
{X,_} = read_line_all3(File),
true
end || {_,File,X,_} <- All ],
[ begin
io:format("read_line_all_alternating: ~s~n",[File]),
{Y,_} = read_line_all_alternating3(File),
true
end || {_,File,_,Y} <- All , Y =/= fail],
[ begin
io:format("read_line_all_alternating (failing as should): ~s~n",[File]),
{'EXIT',_} = (catch read_line_all_alternating3(File)),
true
end || {_,File,_,Y} <- All , Y =:= fail],
read_line_remove_files(All),
ok.
%% read_line with raw buffered file.
read_line_4(Config) when is_list(Config) ->
PrivDir = proplists:get_value(priv_dir, Config),
All = read_line_testdata(PrivDir),
read_line_create_files(All),
[ begin
io:format("read_line_all: ~s~n",[File]),
{X,_} = read_line_all4(File),
true
end || {_,File,X,_} <- All ],
[ begin
io:format("read_line_all_alternating: ~s~n",[File]),
{Y,_} = read_line_all_alternating4(File),
true
end || {_,File,_,Y} <- All , Y =/= fail],
[ begin
io:format("read_line_all_alternating (failing as should): ~s~n",[File]),
{'EXIT',_} = (catch read_line_all_alternating4(File)),
true
end || {_,File,_,Y} <- All , Y =:= fail],
read_line_remove_files(All),
ok.
rl_lines() ->
[ <<"hej">>,<<"hopp">>,<<"i">>,<<"lingon\rskogen">>].
read_line_create0(Filename) ->
{ok,F} = file:open(Filename,[write]),
L = rl_lines(),
[ file:write(F,[R,<<"\r\n">>]) || R <- L ],
file:write(F,<<"Inget radslut\r">>),
file:close(F).
read_line_create1(Filename) ->
{ok,F} = file:open(Filename,[write]),
L = rl_lines(),
[ begin
[ file:write(F,[R,<<"\r\n">>]) || R <- L ],
file:write(F,<<"Inget radslut\r">>)
end || _ <- lists:seq(1,100)],
file:close(F).
read_line_create2(Filename) ->
{ok,F} = file:open(Filename,[write]),
L = rl_lines(),
[ begin
[ file:write(F,[R]) || R <- L ],
file:write(F,<<"Inget radslut\r">>)
end || _ <- lists:seq(1,200)],
file:write(F,<<"\r\n">>),
file:close(F).
read_line_create3(Filename) ->
{ok,F} = file:open(Filename,[write]),
L = rl_lines(),
[ begin
file:write(F,<<"\r\n">>),
file:write(F,<<"\r\n">>),
[ file:write(F,[R,<<"\r\n">>]) || R <- L ],
file:write(F,<<"Inget radslut\r">>)
end || _ <- lists:seq(1,100)],
file:close(F).
read_line_create4(Filename) ->
{ok,F} = file:open(Filename,[write]),
L = rl_lines(),
[ begin
file:write(F,<<"\n">>),
file:write(F,<<"\n">>),
[ file:write(F,[R,<<"\r\n">>]) || R <- L ],
file:write(F,<<"Inget radslut\r">>)
end || _ <- lists:seq(1,100)],
file:close(F).
read_line_create5(Filename) ->
{ok,F} = file:open(Filename,[write]),
L = rl_lines(),
[ begin
file:write(F,<<"i\n">>),
file:write(F,<<"i\n">>),
[ file:write(F,[R,<<"\r\n">>]) || R <- L ],
file:write(F,<<"Inget radslut\r">>)
end || _ <- lists:seq(1,100)],
file:close(F).
read_line_create6(Filename) ->
{ok,F} = file:open(Filename,[write]),
L = rl_lines(),
[ begin
file:write(F,<<"i\r\n">>),
file:write(F,<<"i\r\n">>),
[ file:write(F,[R,<<"\r\n">>]) || R <- L ],
file:write(F,<<"Inget radslut\r">>)
end || _ <- lists:seq(1,100)],
file:close(F).
read_line_create7(Filename) ->
{ok,F} = file:open(Filename,[write]),
L = rl_lines(),
[ begin
[ file:write(F,[R,<<"\r\n">>]) || R <- L ],
file:write(F,<<"Inget radslut\r">>)
end || _ <- lists:seq(1,1000)],
file:close(F).
read_line_all(Filename) ->
{ok,F} = ?PRIM_FILE:open(Filename,[read,binary]),
X=read_rl_lines(F),
?PRIM_FILE:close(F),
Bin = list_to_binary([B || {ok,B} <- X]),
Bin = re:replace(list_to_binary([element(2,file:read_file(Filename))]),
"\r\n","\n",[global,{return,binary}]),
{length(X),Bin}.
read_line_all2(Filename) ->
{ok,F} = file:open(Filename,[read,binary]),
X=read_rl_lines2(F),
file:close(F),
Bin = list_to_binary([B || {ok,B} <- X]),
Bin = re:replace(list_to_binary([element(2,file:read_file(Filename))]),
"\r\n","\n",[global,{return,binary}]),
{length(X),Bin}.
read_line_all3(Filename) ->
{ok,F} = file:open(Filename,[read,binary,raw]),
X=read_rl_lines2(F),
file:close(F),
Bin = list_to_binary([B || {ok,B} <- X]),
Bin = re:replace(list_to_binary([element(2,file:read_file(Filename))]),
"\r\n","\n",[global,{return,binary}]),
{length(X),Bin}.
read_line_all4(Filename) ->
{ok,F} = file:open(Filename,[read,binary,raw,{read_ahead,8192}]),
X=read_rl_lines2(F),
file:close(F),
Bin = list_to_binary([B || {ok,B} <- X]),
Bin = re:replace(list_to_binary([element(2,file:read_file(Filename))]),
"\r\n","\n",[global,{return,binary}]),
{length(X),Bin}.
read_rl_lines(F) ->
case ?PRIM_FILE:read_line(F) of
eof ->
[];
{error,X} ->
{error,X};
List ->
[List | read_rl_lines(F)]
end.
read_rl_lines2(F) ->
case file:read_line(F) of
eof ->
[];
{error,X} ->
{error,X};
List ->
[List | read_rl_lines2(F)]
end.
read_line_all_alternating(Filename) ->
{ok,F} = ?PRIM_FILE:open(Filename,[read,binary]),
X=read_rl_lines(F,true),
?PRIM_FILE:close(F),
Bin = list_to_binary([B || {ok,B} <- X]),
Bin = re:replace(list_to_binary([element(2,file:read_file(Filename))]),
"\r\n","\n",[global,{return,binary}]),
{length(X),Bin}.
read_line_all_alternating2(Filename) ->
{ok,F} = file:open(Filename,[read,binary]),
X=read_rl_lines2(F,true),
file:close(F),
Bin = list_to_binary([B || {ok,B} <- X]),
Bin = re:replace(list_to_binary([element(2,file:read_file(Filename))]),
"\r\n","\n",[global,{return,binary}]),
{length(X),Bin}.
read_line_all_alternating3(Filename) ->
{ok,F} = file:open(Filename,[read,binary,raw]),
X=read_rl_lines2(F,true),
file:close(F),
Bin = list_to_binary([B || {ok,B} <- X]),
Bin = re:replace(list_to_binary([element(2,file:read_file(Filename))]),
"\r\n","\n",[global,{return,binary}]),
{length(X),Bin}.
read_line_all_alternating4(Filename) ->
{ok,F} = file:open(Filename,[read,binary,raw,{read_ahead,8192}]),
X=read_rl_lines2(F,true),
file:close(F),
Bin = list_to_binary([B || {ok,B} <- X]),
Bin = re:replace(list_to_binary([element(2,file:read_file(Filename))]),
"\r\n","\n",[global,{return,binary}]),
{length(X),Bin}.
read_rl_lines(F,Alternate) ->
case begin
case Alternate of
true -> ?PRIM_FILE:read(F,1);
false -> ?PRIM_FILE:read_line(F)
end
end of
eof ->
[];
{error,X} ->
{error,X};
List ->
[List | read_rl_lines(F,not Alternate)]
end.
read_rl_lines2(F,Alternate) ->
case begin
case Alternate of
true -> file:read(F,1);
false -> file:read_line(F)
end
end of
eof ->
[];
{error,X} ->
{error,X};
List ->
[List | read_rl_lines2(F,not Alternate)]
end.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
bytes(B, N)
when is_integer(B), 0 =< B, B =< 255, is_integer(N), N > 2, N band 1 == 0 ->
[bytes(B, N bsr 1), bytes(B, N bsr 1)];
bytes(B, 0)
when is_integer(B), 0 =< B, B =< 255 ->
[];
bytes(B, 2)
when is_integer(B), 0 =< B, B =< 255 ->
[B, B];
bytes(B, N)
when is_integer(B), 0 =< B, B =< 255, is_integer(N), N > 0 ->
[B, bytes(B, N-1)].
%% A simple loop construct.
%%
%% Calls 'Fun' with argument 'Start' first and then repeatedly with
%% its returned value (state) until 'Fun' returns 'Stop'. Then
%% the last state value that was not 'Stop' is returned.
iterate(Start, Done, Fun) when is_function(Fun) ->
iterate(Start, Done, Fun, Start).
iterate(Done, Done, _Fun, I) ->
I;
iterate(I, Done, Fun, _) ->
iterate(Fun(I), Done, Fun, I).
flush() ->
flush([]).
flush(Msgs) ->
receive
Msg ->
flush([Msg | Msgs])
after 0 ->
lists:reverse(Msgs)
end.
%%%
%%% Support for testing large files.
%%%
run_large_file_test(Config, Run, Name) ->
case {os:type(),os:version()} of
{{win32,nt},_} ->
do_run_large_file_test(Config, Run, Name);
{{unix,sunos},OsVersion} when OsVersion < {5,5,1} ->
{skip,"Only supported on Win32, Unix or SunOS >= 5.5.1"};
{{unix,_},_} ->
N = disc_free(proplists:get_value(priv_dir, Config)),
io:format("Free disk: ~w KByte~n", [N]),
if N < 5 * (1 bsl 20) ->
%% Less than 5 GByte free
{skip,"Less than 5 GByte free"};
true ->
do_run_large_file_test(Config, Run, Name)
end;
_ ->
{skip,"Only supported on Win32, Unix or SunOS >= 5.5.1"}
end.
do_run_large_file_test(Config, Run, Name0) ->
Name = filename:join(proplists:get_value(priv_dir, Config),
?MODULE_STRING ++ Name0),
%% Set up a process that will delete this file.
Tester = self(),
Deleter =
spawn(
fun() ->
Mref = erlang:monitor(process, Tester),
receive
{'DOWN',Mref,_,_,_} -> ok;
{Tester,done} -> ok
end,
?FILE_MODULE:delete(Name)
end),
%% Run the test case.
Res = Run(Name),
%% Delete file and finish deleter process.
Mref = erlang:monitor(process, Deleter),
Deleter ! {Tester,done},
receive {'DOWN',Mref,_,_,_} -> ok end,
Res.
disc_free(Path) ->
Data = disksup:get_disk_data(),
{_,Tot,Perc} = hd(lists:filter(
fun({P,_Size,_Full}) ->
lists:prefix(filename:nativename(P),
filename:nativename(Path))
end, lists:reverse(lists:sort(Data)))),
round(Tot * (1-(Perc/100))).
memsize() ->
{Tot,_Used,_} = memsup:get_memory_data(),
Tot.
%%%-----------------------------------------------------------------
%%% Utilities
rm_rf(Mod,Dir) ->
case Mod:read_link_info(Dir) of
{ok, #file_info{type = directory}} ->
{ok, Content} = Mod:list_dir_all(Dir),
[ rm_rf(Mod,filename:join(Dir,C)) || C <- Content ],
Mod:del_dir(Dir),
ok;
{ok, #file_info{}} ->
Mod:delete(Dir);
_ ->
ok
end.