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-rw-r--r--lib/hipe/cerl/erl_bif_types.erl10
-rw-r--r--lib/kernel/doc/src/file.xml52
-rw-r--r--lib/kernel/include/file.hrl9
-rw-r--r--lib/kernel/src/file.erl38
-rw-r--r--lib/kernel/src/file_server.erl9
-rw-r--r--lib/kernel/test/prim_file_SUITE.erl108
6 files changed, 206 insertions, 20 deletions
diff --git a/lib/hipe/cerl/erl_bif_types.erl b/lib/hipe/cerl/erl_bif_types.erl
index 6f0141b0ca..cee399e861 100644
--- a/lib/hipe/cerl/erl_bif_types.erl
+++ b/lib/hipe/cerl/erl_bif_types.erl
@@ -1321,6 +1321,9 @@ type(erlang, resume_process, 1, Xs) ->
fun (_) -> t_any() end); %% TODO: overapproximation -- fix this
type(erlang, round, 1, Xs) ->
strict(arg_types(erlang, round, 1), Xs, fun (_) -> t_integer() end);
+type(erlang, posixtime_to_universaltime, 1, Xs) ->
+ strict(arg_types(erlang, posixtime_to_universaltime, 1), Xs,
+ fun(_) -> t_tuple([t_date(), t_time()]) end);
type(erlang, self, 0, _) -> t_pid();
type(erlang, send, 2, Xs) -> type(erlang, '!', 2, Xs); % alias
type(erlang, send, 3, Xs) ->
@@ -1717,6 +1720,9 @@ type(erlang, universaltime, 0, _) ->
type(erlang, universaltime_to_localtime, 1, Xs) ->
strict(arg_types(erlang, universaltime_to_localtime, 1), Xs,
fun ([T]) -> T end);
+type(erlang, universaltime_to_posixtime, 1, Xs) ->
+ strict(arg_types(erlang, universaltime_to_posixtime,1), Xs,
+ fun(_) -> t_integer() end);
type(erlang, unlink, 1, Xs) ->
strict(arg_types(erlang, unlink, 1), Xs, fun (_) -> t_atom('true') end);
type(erlang, unregister, 1, Xs) ->
@@ -3776,6 +3782,8 @@ arg_types(erlang, resume_process, 1) ->
[t_pid()]; % intended for debugging only
arg_types(erlang, round, 1) ->
[t_number()];
+arg_types(erlang, posixtime_to_universaltime, 1) ->
+ [t_integer()];
arg_types(erlang, self, 0) ->
[];
arg_types(erlang, send, 2) ->
@@ -3942,6 +3950,8 @@ arg_types(erlang, universaltime, 0) ->
[];
arg_types(erlang, universaltime_to_localtime, 1) ->
[t_tuple([t_date(), t_time()])];
+arg_types(erlang, universaltime_to_posixtime, 1) ->
+ [t_tuple([t_date(), t_time()])];
arg_types(erlang, unlink, 1) ->
[t_sup(t_pid(), t_port())];
arg_types(erlang, unregister, 1) ->
diff --git a/lib/kernel/doc/src/file.xml b/lib/kernel/doc/src/file.xml
index 719cbba2b8..772eff13cc 100644
--- a/lib/kernel/doc/src/file.xml
+++ b/lib/kernel/doc/src/file.xml
@@ -150,6 +150,9 @@
<name name="mode"/>
</datatype>
<datatype>
+ <name name="file_info_option"/>
+ </datatype>
+ <datatype>
<name name="sendfile_option"/>
</datatype>
</datatypes>
@@ -412,7 +415,7 @@
<name>file_info(Filename) -> {ok, FileInfo} | {error, Reason}</name>
<fsummary>Get information about a file (deprecated)</fsummary>
<desc>
- <p>This function is obsolete. Use <c>read_file_info/1</c>
+ <p>This function is obsolete. Use <c>read_file_info/1,2</c>
instead.</p>
</desc>
</func>
@@ -1189,6 +1192,7 @@
</func>
<func>
<name name="read_file_info" arity="1"/>
+ <name name="read_file_info" arity="2"/>
<fsummary>Get information about a file</fsummary>
<desc>
<p>Retrieves information about a file. Returns
@@ -1200,6 +1204,20 @@
from which the function is called:</p>
<code type="none">
-include_lib("kernel/include/file.hrl").</code>
+ <p>The time type returned in <c>atime</c>, <c>mtime</c> and <c>ctime</c>
+ is dependent on the time type set in <c>Opts :: {time, Type}</c>.
+ Type <c>local</c> will return local time, <c>universal</c> will
+ return universal time and <c>posix</c> will return seconds since
+ or before unix time epoch which is 1970-01-01 00:00 UTC.
+ Default is <c>{time, local}</c>.
+ </p>
+ <note>
+ <p>
+ Since file times is stored in posix time on most OS it is
+ faster to query file information with the <c>posix</c> option.
+ </p>
+ </note>
+
<p>The record <c>file_info</c> contains the following fields.</p>
<taglist>
<tag><c>size = integer()</c></tag>
@@ -1214,15 +1232,15 @@
<item>
<p>The current system access to the file.</p>
</item>
- <tag><c>atime = <seealso marker="#type-date_time">date_time()</seealso></c></tag>
+ <tag><c>atime = <seealso marker="#type-date_time">date_time()</seealso> | integer() </c></tag>
<item>
- <p>The last (local) time the file was read.</p>
+ <p>The last time the file was read.</p>
</item>
- <tag><c>mtime = <seealso marker="#type-date_time">date_time()</seealso></c></tag>
+ <tag><c>mtime = <seealso marker="#type-date_time">date_time()</seealso> | integer() </c></tag>
<item>
- <p>The last (local) time the file was written.</p>
+ <p>The last time the file was written.</p>
</item>
- <tag><c>ctime = <seealso marker="#type-date_time">date_time()</seealso></c></tag>
+ <tag><c>ctime = <seealso marker="#type-date_time">date_time()</seealso> | integer() </c></tag>
<item>
<p>The interpretation of this time field depends on
the operating system. On Unix, it is the last time
@@ -1378,9 +1396,11 @@
</func>
<func>
<name name="read_link_info" arity="1"/>
+ <name name="read_link_info" arity="2"/>
<fsummary>Get information about a link or file</fsummary>
<desc>
- <p>This function works like <c>read_file_info/1</c>, except that
+ <p>This function works like
+ <seealso marker="#read_file_info/2">read_file_info/1,2</seealso> except that
if <c><anno>Name</anno></c> is a symbolic link, information about
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
@@ -1691,6 +1711,7 @@
</func>
<func>
<name name="write_file_info" arity="2"/>
+ <name name="write_file_info" arity="3"/>
<fsummary>Change information about a file</fsummary>
<desc>
<p>Change file information. Returns <c>ok</c> if successful,
@@ -1701,18 +1722,25 @@
from which the function is called:</p>
<code type="none">
-include_lib("kernel/include/file.hrl").</code>
+ <p>The time type set in <c>atime</c>, <c>mtime</c> and <c>ctime</c>
+ is dependent on the time type set in <c>Opts :: {time, Type}</c>.
+ Type <c>local</c> will interpret the time set as local, <c>universal</c> will
+ 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>
<p>The following fields are used from the record, if they are
given.</p>
<taglist>
- <tag><c>atime = <seealso marker="#type-date_time">date_time()</seealso></c></tag>
+ <tag><c>atime = <seealso marker="#type-date_time">date_time()</seealso> | integer()</c></tag>
<item>
- <p>The last (local) time the file was read.</p>
+ <p>The last time the file was read.</p>
</item>
- <tag><c>mtime = <seealso marker="#type-date_time">date_time()</seealso></c></tag>
+ <tag><c>mtime = <seealso marker="#type-date_time">date_time()</seealso> | integer()</c></tag>
<item>
- <p>The last (local) time the file was written.</p>
+ <p>The last time the file was written.</p>
</item>
- <tag><c>ctime = <seealso marker="#type-date_time">date_time()</seealso></c></tag>
+ <tag><c>ctime = <seealso marker="#type-date_time">date_time()</seealso> | integer()</c></tag>
<item>
<p>On Unix, any value give for this field will be ignored
(the "ctime" for the file will be set to the current
diff --git a/lib/kernel/include/file.hrl b/lib/kernel/include/file.hrl
index 3889bce393..ef42987a3d 100644
--- a/lib/kernel/include/file.hrl
+++ b/lib/kernel/include/file.hrl
@@ -25,10 +25,11 @@
{size :: non_neg_integer(), % Size of file in bytes.
type :: 'device' | 'directory' | 'other' | 'regular' | 'symlink',
access :: 'read' | 'write' | 'read_write' | 'none',
- atime :: file:date_time(), % The local time the file was last read:
- % {{Year, Mon, Day}, {Hour, Min, Sec}}.
- mtime :: file:date_time(), % The local time the file was last written.
- ctime :: file:date_time(), % The interpretation of this time field
+ atime :: file:date_time() | integer(), % The local time the file was last read:
+ % {{Year, Mon, Day}, {Hour, Min, Sec}}.
+ % atime, ctime, mtime may also be unix epochs()
+ mtime :: file:date_time() | integer(), % The local time the file was last written.
+ ctime :: file:date_time() | integer(), % The interpretation of this time field
% is dependent on operating system.
% On Unix it is the last time the file
% or the inode was changed. On Windows,
diff --git a/lib/kernel/src/file.erl b/lib/kernel/src/file.erl
index 7793009bb9..6dc2a26816 100644
--- a/lib/kernel/src/file.erl
+++ b/lib/kernel/src/file.erl
@@ -28,9 +28,11 @@
%% File system and metadata.
-export([get_cwd/0, get_cwd/1, set_cwd/1, delete/1, rename/2,
make_dir/1, del_dir/1, list_dir/1,
- read_file_info/1, write_file_info/2,
+ read_file_info/1, read_file_info/2,
+ write_file_info/2, write_file_info/3,
altname/1,
- read_link_info/1, read_link/1,
+ read_link_info/1, read_link_info/2,
+ read_link/1,
make_link/2, make_symlink/2,
read_file/1, write_file/2, write_file/3]).
%% Specialized
@@ -107,6 +109,10 @@
-type posix_file_advise() :: 'normal' | 'sequential' | 'random'
| 'no_reuse' | 'will_need' | 'dont_need'.
-type sendfile_option() :: {chunk_size, non_neg_integer()}.
+-type file_info_option() :: {'time', 'local'} | {'time', 'universal'}
+ | {'time', 'posix'}.
+
+
%%%-----------------------------------------------------------------
%%% General functions
@@ -214,6 +220,15 @@ del_dir(Name) ->
read_file_info(Name) ->
check_and_call(read_file_info, [file_name(Name)]).
+-spec read_file_info(Filename, Opts) -> {ok, FileInfo} | {error, Reason} when
+ Filename :: name(),
+ Opts :: [file_info_option()],
+ FileInfo :: file_info(),
+ Reason :: posix() | badarg.
+
+read_file_info(Name, Opts) when is_list(Opts) ->
+ check_and_call(read_file_info, [file_name(Name), Opts]).
+
-spec altname(Name :: name()) -> any().
altname(Name) ->
@@ -227,6 +242,16 @@ altname(Name) ->
read_link_info(Name) ->
check_and_call(read_link_info, [file_name(Name)]).
+-spec read_link_info(Name, Opts) -> {ok, FileInfo} | {error, Reason} when
+ Name :: name(),
+ Opts :: [file_info_option()],
+ FileInfo :: file_info(),
+ Reason :: posix() | badarg.
+
+read_link_info(Name, Opts) when is_list(Opts) ->
+ check_and_call(read_link_info, [file_name(Name),Opts]).
+
+
-spec read_link(Name) -> {ok, Filename} | {error, Reason} when
Name :: name(),
Filename :: filename(),
@@ -243,6 +268,15 @@ read_link(Name) ->
write_file_info(Name, Info = #file_info{}) ->
check_and_call(write_file_info, [file_name(Name), Info]).
+-spec write_file_info(Filename, FileInfo, Opts) -> ok | {error, Reason} when
+ Filename :: name(),
+ Opts :: [file_info_option()],
+ FileInfo :: 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]).
+
-spec list_dir(Dir) -> {ok, Filenames} | {error, Reason} when
Dir :: name(),
Filenames :: [filename()],
diff --git a/lib/kernel/src/file_server.erl b/lib/kernel/src/file_server.erl
index 64c61ba3ac..81f9efcf39 100644
--- a/lib/kernel/src/file_server.erl
+++ b/lib/kernel/src/file_server.erl
@@ -147,15 +147,24 @@ handle_call({get_cwd, Name}, _From, Handle) ->
handle_call({read_file_info, Name}, _From, Handle) ->
{reply, ?PRIM_FILE:read_file_info(Handle, Name), Handle};
+handle_call({read_file_info, Name, Opts}, _From, Handle) ->
+ {reply, ?PRIM_FILE:read_file_info(Handle, Name, Opts), Handle};
+
handle_call({altname, Name}, _From, Handle) ->
{reply, ?PRIM_FILE:altname(Handle, Name), Handle};
handle_call({write_file_info, Name, Info}, _From, Handle) ->
{reply, ?PRIM_FILE:write_file_info(Handle, Name, Info), Handle};
+handle_call({write_file_info, Name, Info, Opts}, _From, Handle) ->
+ {reply, ?PRIM_FILE:write_file_info(Handle, Name, Info, Opts), Handle};
+
handle_call({read_link_info, Name}, _From, Handle) ->
{reply, ?PRIM_FILE:read_link_info(Handle, Name), Handle};
+handle_call({read_link_info, Name, Opts}, _From, Handle) ->
+ {reply, ?PRIM_FILE:read_link_info(Handle, Name, Opts), Handle};
+
handle_call({read_link, Name}, _From, Handle) ->
{reply, ?PRIM_FILE:read_link(Handle, Name), Handle};
diff --git a/lib/kernel/test/prim_file_SUITE.erl b/lib/kernel/test/prim_file_SUITE.erl
index 00eda6292f..ccf26ee034 100644
--- a/lib/kernel/test/prim_file_SUITE.erl
+++ b/lib/kernel/test/prim_file_SUITE.erl
@@ -32,7 +32,10 @@
file_info_basic_directory_a/1, file_info_basic_directory_b/1,
file_info_bad_a/1, file_info_bad_b/1,
file_info_times_a/1, file_info_times_b/1,
- file_write_file_info_a/1, file_write_file_info_b/1]).
+ file_write_file_info_a/1, file_write_file_info_b/1,
+ file_read_file_info_opts/1, file_write_file_info_opts/1,
+ file_write_read_file_info_opts/1
+ ]).
-export([rename_a/1, rename_b/1,
access/1, truncate/1, datasync/1, sync/1,
read_write/1, pread_write/1, append/1, exclusive/1]).
@@ -90,7 +93,10 @@ groups() ->
file_info_basic_directory_a,
file_info_basic_directory_b, file_info_bad_a,
file_info_bad_b, file_info_times_a, file_info_times_b,
- file_write_file_info_a, file_write_file_info_b]},
+ file_write_file_info_a, file_write_file_info_b,
+ file_read_file_info_opts, file_write_file_info_opts,
+ file_write_read_file_info_opts
+ ]},
{errors, [],
[e_delete, e_rename, e_make_dir, e_del_dir]},
{compression, [],
@@ -1074,6 +1080,104 @@ file_write_file_info(Config, Handle, Suffix) ->
?line test_server:timetrap_cancel(Dog),
ok.
+%% Test the write_file_info/3 function.
+
+file_write_file_info_opts(suite) -> [];
+file_write_file_info_opts(doc) -> [];
+file_write_file_info_opts(Config) when is_list(Config) ->
+ {ok, Handle} = ?PRIM_FILE:start(),
+ Dog = test_server:timetrap(test_server:seconds(10)),
+ RootDir = get_good_directory(Config),
+ test_server:format("RootDir = ~p", [RootDir]),
+
+ Name = filename:join(RootDir, atom_to_list(?MODULE) ++"_write_file_info_opts"),
+ ok = ?PRIM_FILE:write_file(Name, "hello_opts"),
+
+ lists:foreach(fun
+ ({FI, Opts}) ->
+ ok = ?PRIM_FILE_call(write_file_info, Handle, [Name, FI, Opts])
+ end, [
+ {#file_info{ mode=8#600, atime = Time, mtime = Time, ctime = Time}, Opts} ||
+ Opts <- [[{time, posix}]],
+ Time <- [ 0,1,-1,100,-100,1000,-1000,10000,-10000 ]
+ ]),
+
+ % REM: determine date range dependent on time_t = Uint32 | Sint32 | Sint64
+ % Determine time_t on os:type()?
+ lists:foreach(fun
+ ({FI, Opts}) ->
+ ok = ?PRIM_FILE_call(write_file_info, Handle, [Name, FI, Opts])
+ end, [
+ {#file_info{ mode=8#400, atime = Time, mtime = Time, ctime = Time}, Opts} ||
+ Opts <- [[{time, universal}],[{time, local}]],
+ Time <- [
+ {{1970,1,1},{0,0,0}},
+ {{1970,1,1},{0,0,1}},
+ {{1969,12,31},{23,59,59}},
+ {{1908,2,3},{23,59,59}},
+ {{2012,2,3},{23,59,59}},
+ {{2037,2,3},{23,59,59}},
+ erlang:localtime()
+ ]]),
+ ok = ?PRIM_FILE:stop(Handle),
+ test_server:timetrap_cancel(Dog),
+ ok.
+
+file_read_file_info_opts(suite) -> [];
+file_read_file_info_opts(doc) -> [];
+file_read_file_info_opts(Config) when is_list(Config) ->
+ {ok, Handle} = ?PRIM_FILE:start(),
+ Dog = test_server:timetrap(test_server:seconds(10)),
+ RootDir = get_good_directory(Config),
+ test_server:format("RootDir = ~p", [RootDir]),
+
+ Name = filename:join(RootDir, atom_to_list(?MODULE) ++"_read_file_info_opts"),
+ ok = ?PRIM_FILE:write_file(Name, "hello_opts"),
+
+ lists:foreach(fun
+ (Opts) ->
+ {ok,_} = ?PRIM_FILE_call(read_file_info, Handle, [Name, Opts])
+ end, [[{time, Type}] || Type <- [local, universal, posix]]),
+ ok = ?PRIM_FILE:stop(Handle),
+ test_server:timetrap_cancel(Dog),
+ ok.
+
+%% Test the write and read back *_file_info/3 functions.
+
+file_write_read_file_info_opts(suite) -> [];
+file_write_read_file_info_opts(doc) -> [];
+file_write_read_file_info_opts(Config) when is_list(Config) ->
+ {ok, Handle} = ?PRIM_FILE:start(),
+ Dog = test_server:timetrap(test_server:seconds(10)),
+ RootDir = get_good_directory(Config),
+ test_server:format("RootDir = ~p", [RootDir]),
+
+ Name = filename:join(RootDir, atom_to_list(?MODULE) ++"_read_write_file_info_opts"),
+ ok = ?PRIM_FILE:write_file(Name, "hello_opts2"),
+
+ ok = file_write_read_file_info_opts(Handle, Name, {{1989, 04, 28}, {19,30,22}}, [{time, local}]),
+ ok = file_write_read_file_info_opts(Handle, Name, {{1989, 04, 28}, {19,30,22}}, [{time, universal}]),
+ ok = file_write_read_file_info_opts(Handle, Name, {{1930, 04, 28}, {19,30,22}}, [{time, local}]),
+ ok = file_write_read_file_info_opts(Handle, Name, {{1930, 04, 28}, {19,30,22}}, [{time, universal}]),
+ ok = file_write_read_file_info_opts(Handle, Name, 1, [{time, posix}]),
+ ok = file_write_read_file_info_opts(Handle, Name, -1, [{time, posix}]),
+ ok = file_write_read_file_info_opts(Handle, Name, 300000, [{time, posix}]),
+ ok = file_write_read_file_info_opts(Handle, Name, -300000, [{time, posix}]),
+ ok = file_write_read_file_info_opts(Handle, Name, 0, [{time, posix}]),
+
+ ok = ?PRIM_FILE:stop(Handle),
+ test_server:timetrap_cancel(Dog),
+ ok.
+
+file_write_read_file_info_opts(Handle, Name, Mtime, Opts) ->
+ {ok, FI} = ?PRIM_FILE_call(read_file_info, Handle, [Name, Opts]),
+ FI2 = FI#file_info{ mtime = Mtime },
+ ok = ?PRIM_FILE_call(write_file_info, Handle, [Name, FI2, Opts]),
+ {ok, FI2} = ?PRIM_FILE_call(read_file_info, Handle, [Name, Opts]),
+ ok.
+
+
+
%% Returns a directory on a file system that has correct file times.
get_good_directory(Config) ->