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-rw-r--r--lib/kernel/doc/src/file.xml6
-rw-r--r--lib/kernel/src/file.erl62
-rw-r--r--lib/kernel/test/file_SUITE.erl61
3 files changed, 91 insertions, 38 deletions
diff --git a/lib/kernel/doc/src/file.xml b/lib/kernel/doc/src/file.xml
index 6976457897..338d62e82b 100644
--- a/lib/kernel/doc/src/file.xml
+++ b/lib/kernel/doc/src/file.xml
@@ -1283,6 +1283,8 @@
or before unix time epoch which is 1970-01-01 00:00 UTC.
Default is <c>{time, local}</c>.
</p>
+ <p>If the <c>raw</c> option is set, the file server will not be called
+ and only informations about local files will be returned.</p>
<note>
<p>
Since file times is stored in posix time on most OS it is
@@ -1509,6 +1511,8 @@
the link will be returned in the <c>file_info</c> record and
the <c>type</c> field of the record will be set to
<c>symlink</c>.</p>
+ <p>If the <c>raw</c> option is set, the file server will not be called
+ and only informations about local files will be returned.</p>
<p>If <c><anno>Name</anno></c> is not a symbolic link, this function returns
exactly the same result as <c>read_file_info/1</c>.
On platforms that do not support symbolic links, this function
@@ -1847,6 +1851,8 @@
interpret it as universal time and <c>posix</c> must be seconds since
or before unix time epoch which is 1970-01-01 00:00 UTC.
Default is <c>{time, local}</c>.
+ <p>If the <c>raw</c> option is set, the file server will not be called
+ and only informations about local files will be returned.</p>
</p>
<p>The following fields are used from the record, if they are
given.</p>
diff --git a/lib/kernel/src/file.erl b/lib/kernel/src/file.erl
index 7b2750846e..b6b153ae56 100644
--- a/lib/kernel/src/file.erl
+++ b/lib/kernel/src/file.erl
@@ -114,7 +114,7 @@
-type sendfile_option() :: {chunk_size, non_neg_integer()}
| {use_threads, boolean()}.
-type file_info_option() :: {'time', 'local'} | {'time', 'universal'}
- | {'time', 'posix'}.
+ | {'time', 'posix'} | raw.
%%% BIFs
-export([native_name_encoding/0]).
@@ -242,7 +242,19 @@ read_file_info(Name) ->
Reason :: posix() | badarg.
read_file_info(Name, Opts) when is_list(Opts) ->
- check_and_call(read_file_info, [file_name(Name), Opts]).
+ Args = [file_name(Name), Opts],
+ case check_args(Args) of
+ ok ->
+ case lists:member(raw, Opts) of
+ true ->
+ [FileName|_] = Args,
+ ?PRIM_FILE:read_file_info(FileName, Opts);
+ false ->
+ call(read_file_info, Args)
+ end;
+ Error ->
+ Error
+ end.
-spec altname(Name :: name_all()) -> any().
@@ -264,7 +276,19 @@ read_link_info(Name) ->
Reason :: posix() | badarg.
read_link_info(Name, Opts) when is_list(Opts) ->
- check_and_call(read_link_info, [file_name(Name),Opts]).
+ Args = [file_name(Name), Opts],
+ case check_args(Args) of
+ ok ->
+ case lists:member(raw, Opts) of
+ true ->
+ [FileName|_] = Args,
+ ?PRIM_FILE:read_link_info(FileName, Opts);
+ false ->
+ call(read_link_info, Args)
+ end;
+ Error ->
+ Error
+ end.
-spec read_link(Name) -> {ok, Filename} | {error, Reason} when
@@ -298,7 +322,19 @@ write_file_info(Name, Info = #file_info{}) ->
Reason :: posix() | badarg.
write_file_info(Name, Info = #file_info{}, Opts) when is_list(Opts) ->
- check_and_call(write_file_info, [file_name(Name), Info, Opts]).
+ Args = [file_name(Name), Info, Opts],
+ case check_args(Args) of
+ ok ->
+ case lists:member(raw, Opts) of
+ true ->
+ [FileName|_] = Args,
+ ?PRIM_FILE:write_file_info(FileName, Info, Opts);
+ false ->
+ call(write_file_info, Args)
+ end;
+ Error ->
+ Error
+ end.
-spec list_dir(Dir) -> {ok, Filenames} | {error, Reason} when
Dir :: name_all(),
@@ -384,26 +420,12 @@ write_file(Name, Bin, ModeList) when is_list(ModeList) ->
%% Obsolete, undocumented, local node only, don't use!.
%% XXX to be removed.
raw_read_file_info(Name) ->
- Args = [file_name(Name)],
- case check_args(Args) of
- ok ->
- [FileName] = Args,
- ?PRIM_FILE:read_file_info(FileName);
- Error ->
- Error
- end.
+ read_file_info(Name, [raw]).
%% Obsolete, undocumented, local node only, don't use!.
%% XXX to be removed.
raw_write_file_info(Name, #file_info{} = Info) ->
- Args = [file_name(Name)],
- case check_args(Args) of
- ok ->
- [FileName] = Args,
- ?PRIM_FILE:write_file_info(FileName, Info);
- Error ->
- Error
- end.
+ write_file_info(Name, Info, [raw]).
%%%-----------------------------------------------------------------
%%% File io server functions.
diff --git a/lib/kernel/test/file_SUITE.erl b/lib/kernel/test/file_SUITE.erl
index f6d6cd94ab..56c35678b6 100644
--- a/lib/kernel/test/file_SUITE.erl
+++ b/lib/kernel/test/file_SUITE.erl
@@ -1236,9 +1236,10 @@ file_info_basic_file(Config) when is_list(Config) ->
%% Test that the file has the expected attributes.
%% The times are tricky, so we will save them to a separate test case.
- ?line {ok,#file_info{size=Size,type=Type,access=Access,
- atime=AccessTime,mtime=ModifyTime}} =
- ?FILE_MODULE:read_file_info(Name),
+ {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,
?line io:format("Access ~p, Modify ~p", [AccessTime, ModifyTime]),
?line Size = 7,
?line Type = regular,
@@ -1280,9 +1281,10 @@ file_info_basic_directory(Config) when is_list(Config) ->
test_server:timetrap_cancel(Dog).
test_directory(Name, ExpectedAccess) ->
- ?line {ok,#file_info{size=Size,type=Type,access=Access,
- atime=AccessTime,mtime=ModifyTime}} =
- ?FILE_MODULE:read_file_info(Name),
+ {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,
?line io:format("Testing directory ~s", [Name]),
?line io:format("Directory size is ~p", [Size]),
?line io:format("Access ~p", [Access]),
@@ -1307,11 +1309,11 @@ file_info_bad(doc) -> [];
file_info_bad(Config) when is_list(Config) ->
?line Dog = test_server:timetrap(test_server:seconds(5)),
?line RootDir = filename:join([?config(priv_dir, Config)]),
- ?line {error, enoent} =
- ?FILE_MODULE:read_file_info(
- filename:join(RootDir,
- atom_to_list(?MODULE)++ "_nonexistent")),
+ 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]),
?line {error, enoent} = ?FILE_MODULE:read_file_info(""),
+ {error, enoent} = ?FILE_MODULE:read_file_info("", [raw]),
?line [] = flush(),
?line test_server:timetrap_cancel(Dog),
ok.
@@ -1346,8 +1348,16 @@ file_info_int(Config) ->
?line io:put_chars(Fd1,"foo"),
%% check that the file got a modify date max a few seconds away from now
- ?line {ok,#file_info{type=regular,atime=AccTime1,mtime=ModTime1}} =
- ?FILE_MODULE:read_file_info(Name),
+ {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,
+
?line Now = erlang:localtime(), %???
?line io:format("Now ~p",[Now]),
?line io:format("Open file Acc ~p Mod ~p",[AccTime1,ModTime1]),
@@ -1363,9 +1373,10 @@ file_info_int(Config) ->
%% close the file, and watch the modify date change
?line ok = ?FILE_MODULE:close(Fd1),
- ?line {ok,#file_info{size=Size,type=regular,access=Access,
- atime=AccTime2,mtime=ModTime2}} =
- ?FILE_MODULE:read_file_info(Name),
+ {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,
?line io:format("Closed file Acc ~p Mod ~p",[AccTime2,ModTime2]),
?line true = time_dist(ModTime1,ModTime2) >= 0,
@@ -1374,9 +1385,10 @@ file_info_int(Config) ->
?line Access = read_write,
%% Do some directory checking
- ?line {ok,#file_info{size=DSize,type=directory,access=DAccess,
- atime=AccTime3,mtime=ModTime3}} =
- ?FILE_MODULE:read_file_info(RootDir),
+ {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
?line io:format("Dir Acc ~p; Mod ~p; Now ~p", [AccTime3, ModTime3, Now]),
?line true = abs(time_dist(Now,ModTime3)) < 5,
@@ -1449,6 +1461,12 @@ file_write_file_info(Config) when is_list(Config) ->
?line ?FILE_MODULE:write_file_info(Name1, #file_info{mode=8#400}),
?line {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.
@@ -2650,7 +2668,9 @@ make_link(Config) when is_list(Config) ->
%% since they are not used on symbolic links.
?line {ok, Info} = ?FILE_MODULE:read_link_info(Name),
+ {ok,Info} = ?FILE_MODULE:read_link_info(Name, [raw]),
?line {ok, Info} = ?FILE_MODULE:read_link_info(Alias),
+ {ok,Info} = ?FILE_MODULE:read_link_info(Alias, [raw]),
?line #file_info{links = 2, type = regular} = Info,
?line {error, eexist} =
?FILE_MODULE:make_link(Name, Alias),
@@ -2670,6 +2690,7 @@ read_link_info_for_non_link(Config) when is_list(Config) ->
?line {ok, #file_info{type=directory}} =
?FILE_MODULE:read_link_info("."),
+ {ok, #file_info{type=directory}} = ?FILE_MODULE:read_link_info(".", [raw]),
?line [] = flush(),
?line test_server:timetrap_cancel(Dog),
@@ -2700,11 +2721,15 @@ symlinks(Config) when is_list(Config) ->
{skipped, "Windows user not privileged to create symlinks"};
ok ->
?line {ok, Info1} = ?FILE_MODULE:read_file_info(Name),
+ {ok,Info1} = ?FILE_MODULE:read_file_info(Name, [raw]),
?line {ok, Info1} = ?FILE_MODULE:read_file_info(Alias),
+ {ok,Info1} = ?FILE_MODULE:read_file_info(Alias, [raw]),
?line {ok, Info1} = ?FILE_MODULE:read_link_info(Name),
+ {ok,Info1} = ?FILE_MODULE:read_link_info(Name, [raw]),
?line #file_info{links = 1, type = regular} = Info1,
?line {ok, Info2} = ?FILE_MODULE:read_link_info(Alias),
+ {ok,Info2} = ?FILE_MODULE:read_link_info(Alias, [raw]),
?line #file_info{links=1, type=symlink} = Info2,
?line {ok, Name} = ?FILE_MODULE:read_link(Alias),
{ok, Name} = ?FILE_MODULE:read_link_all(Alias),
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-13 10:21:43 +0000