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-rw-r--r--lib/stdlib/src/erl_tar.erl47
-rw-r--r--lib/stdlib/src/erl_tar.hrl8
-rw-r--r--lib/stdlib/test/tar_SUITE.erl41
3 files changed, 64 insertions, 32 deletions
diff --git a/lib/stdlib/src/erl_tar.erl b/lib/stdlib/src/erl_tar.erl
index 168ea4002c..76f0b38108 100644
--- a/lib/stdlib/src/erl_tar.erl
+++ b/lib/stdlib/src/erl_tar.erl
@@ -176,7 +176,7 @@ check_extract(Name, #read_opts{files=Files}) ->
-type tar_entry() :: {filename(),
typeflag(),
non_neg_integer(),
- calendar:datetime(),
+ tar_time(),
mode(),
uid(),
gid()}.
@@ -274,8 +274,13 @@ mode_to_string(Mode, [_|T], Acc) ->
mode_to_string(_, [], Acc) ->
Acc.
-%% Converts a datetime tuple to a readable string
-time_to_string({{Y, Mon, Day}, {H, Min, _}}) ->
+%% Converts a tar_time() (POSIX time) to a readable string
+time_to_string(Secs0) ->
+ Epoch = calendar:datetime_to_gregorian_seconds(?EPOCH),
+ Secs = Epoch + Secs0,
+ DateTime0 = calendar:gregorian_seconds_to_datetime(Secs),
+ DateTime = calendar:universal_time_to_local_time(DateTime0),
+ {{Y, Mon, Day}, {H, Min, _}} = DateTime,
io_lib:format("~s ~2w ~s:~s ~w", [month(Mon), Day, two_d(H), two_d(Min), Y]).
two_d(N) ->
@@ -452,7 +457,8 @@ add(Reader, NameOrBin, NameInArchive, Options)
do_add(#reader{access=write}=Reader, Name, NameInArchive, Options)
when is_list(NameInArchive), is_list(Options) ->
- Opts = #add_opts{read_info=fun(F) -> file:read_link_info(F) end},
+ RF = fun(F) -> file:read_link_info(F, [{time, posix}]) end,
+ Opts = #add_opts{read_info=RF},
add1(Reader, Name, NameInArchive, add_opts(Options, Opts));
do_add(#reader{access=read},_,_,_) ->
{error, eacces};
@@ -460,7 +466,8 @@ do_add(Reader,_,_,_) ->
{error, {badarg, Reader}}.
add_opts([dereference|T], Opts) ->
- add_opts(T, Opts#add_opts{read_info=fun(F) -> file:read_file_info(F) end});
+ RF = fun(F) -> file:read_file_info(F, [{time, posix}]) end,
+ add_opts(T, Opts#add_opts{read_info=RF});
add_opts([verbose|T], Opts) ->
add_opts(T, Opts#add_opts{verbose=true});
add_opts([{chunks,N}|T], Opts) ->
@@ -503,7 +510,7 @@ add1(#reader{}=Reader, Name, NameInArchive, #add_opts{read_info=ReadInfo}=Opts)
end;
add1(Reader, Bin, NameInArchive, Opts) when is_binary(Bin) ->
add_verbose(Opts, "a ~ts~n", [NameInArchive]),
- Now = calendar:now_to_local_time(erlang:timestamp()),
+ Now = os:system_time(seconds),
Header = #tar_header{
name = NameInArchive,
size = byte_size(Bin),
@@ -612,7 +619,7 @@ build_header(#tar_header{}=Header, Opts) ->
devmajor=Devmaj,
devminor=Devmin
} = Header,
- Mtime = datetime_to_posix(Header#tar_header.mtime),
+ Mtime = Header#tar_header.mtime,
Block0 = ?ZERO_BLOCK,
{Block1, Pax0} = write_string(Block0, ?V7_NAME, ?V7_NAME_LEN, Name, ?PAX_PATH, #{}),
@@ -770,14 +777,6 @@ join_split_ustar_path([Part|Rest], {ok, Name, nil}) ->
join_split_ustar_path([Part|Rest], {ok, Name, Acc}) ->
join_split_ustar_path(Rest, {ok, Name, <<Acc/binary,$/,Part/binary>>}).
-datetime_to_posix(DateTime) ->
- Epoch = calendar:datetime_to_gregorian_seconds(?EPOCH),
- Secs = calendar:datetime_to_gregorian_seconds(DateTime),
- case Secs - Epoch of
- N when N < 0 -> 0;
- N -> N
- end.
-
write_octal(Block, Pos, Size, X) ->
Octal = zero_pad(format_octal(X), Size-1),
if byte_size(Octal) < Size ->
@@ -984,7 +983,7 @@ do_get_format(#header_v7{}=V7, Bin)
unpack_format(Format, #header_v7{}=V7, Bin, Reader)
when is_binary(Bin), byte_size(Bin) =:= ?BLOCK_SIZE ->
- Mtime = posix_to_erlang_time(parse_numeric(V7#header_v7.mtime)),
+ Mtime = parse_numeric(V7#header_v7.mtime),
Header0 = #tar_header{
name=parse_string(V7#header_v7.name),
mode=parse_numeric(V7#header_v7.mode),
@@ -1051,9 +1050,9 @@ unpack_modern(Format, #header_v7{}=V7, Bin, #tar_header{}=Header0)
Star = to_star(V7, Bin),
Prefix0 = parse_string(Star#header_star.prefix),
Atime0 = Star#header_star.atime,
- Atime = posix_to_erlang_time(parse_numeric(Atime0)),
+ Atime = parse_numeric(Atime0),
Ctime0 = Star#header_star.ctime,
- Ctime = posix_to_erlang_time(parse_numeric(Ctime0)),
+ Ctime = parse_numeric(Ctime0),
{Prefix0, H1#tar_header{
atime=Atime,
ctime=Ctime
@@ -1313,11 +1312,6 @@ is_header_only_type(?TYPE_LINK) -> true;
is_header_only_type(?TYPE_DIR) -> true;
is_header_only_type(_) -> false.
-posix_to_erlang_time(Sec) ->
- OneMillion = 1000000,
- Time = calendar:now_to_datetime({Sec div OneMillion, Sec rem OneMillion, 0}),
- erlang:universaltime_to_localtime(Time).
-
foldl_read(#reader{access=read}=Reader, Fun, Accu, #read_opts{}=Opts)
when is_function(Fun,4) ->
case foldl_read0(Reader, Fun, Accu, Opts) of
@@ -1423,7 +1417,7 @@ do_merge_pax(Header, [_Ignore|Rest]) ->
do_merge_pax(Header, Rest).
%% Returns the time since UNIX epoch as a datetime
--spec parse_pax_time(binary()) -> calendar:datetime().
+-spec parse_pax_time(binary()) -> tar_time().
parse_pax_time(Bin) when is_binary(Bin) ->
TotalNano = case binary:split(Bin, [<<$.>>]) of
[SecondsStr, NanoStr0] ->
@@ -1450,8 +1444,7 @@ parse_pax_time(Bin) when is_binary(Bin) ->
Micro = TotalNano div 1000,
Mega = Micro div 1000000000000,
Secs = Micro div 1000000 - (Mega*1000000),
- Micro2 = Micro rem 1000000,
- calendar:now_to_datetime({Mega, Secs, Micro2}).
+ Secs.
%% Given a regular file reader, reads the whole file and
%% parses all extended attributes it contains.
@@ -1671,7 +1664,7 @@ set_extracted_file_info(Name, #tar_header{typeflag = ?TYPE_BLOCK}=Header) ->
set_device_info(Name, Header);
set_extracted_file_info(Name, #tar_header{mtime=Mtime,mode=Mode}) ->
Info = #file_info{mode=Mode, mtime=Mtime},
- file:write_file_info(Name, Info).
+ file:write_file_info(Name, Info, [{time, posix}]).
set_device_info(Name, #tar_header{}=Header) ->
Mtime = Header#tar_header.mtime,
diff --git a/lib/stdlib/src/erl_tar.hrl b/lib/stdlib/src/erl_tar.hrl
index d646d02989..cff0c2f500 100644
--- a/lib/stdlib/src/erl_tar.hrl
+++ b/lib/stdlib/src/erl_tar.hrl
@@ -55,6 +55,8 @@
{string(), binary()} |
{string(), file:filename()}].
+-type tar_time() :: non_neg_integer().
+
%% The tar header, once fully parsed.
-record(tar_header, {
name = "" :: string(), %% name of header file entry
@@ -62,15 +64,15 @@
uid = 0 :: non_neg_integer(), %% user id of owner
gid = 0 :: non_neg_integer(), %% group id of owner
size = 0 :: non_neg_integer(), %% length in bytes
- mtime :: calendar:datetime(), %% modified time
+ mtime :: tar_time(), %% modified time
typeflag :: char(), %% type of header entry
linkname = "" :: string(), %% target name of link
uname = "" :: string(), %% user name of owner
gname = "" :: string(), %% group name of owner
devmajor = 0 :: non_neg_integer(), %% major number of character or block device
devminor = 0 :: non_neg_integer(), %% minor number of character or block device
- atime :: calendar:datetime(), %% access time
- ctime :: calendar:datetime() %% status change time
+ atime :: tar_time(), %% access time
+ ctime :: tar_time() %% status change time
}).
-type tar_header() :: #tar_header{}.
diff --git a/lib/stdlib/test/tar_SUITE.erl b/lib/stdlib/test/tar_SUITE.erl
index e9ab12e061..4061008812 100644
--- a/lib/stdlib/test/tar_SUITE.erl
+++ b/lib/stdlib/test/tar_SUITE.erl
@@ -27,7 +27,8 @@
extract_from_binary_compressed/1, extract_filtered/1,
extract_from_open_file/1, symlinks/1, open_add_close/1, cooked_compressed/1,
memory/1,unicode/1,read_other_implementations/1,
- sparse/1, init/1, leading_slash/1, dotdot/1]).
+ sparse/1, init/1, leading_slash/1, dotdot/1,
+ roundtrip_metadata/1]).
-include_lib("common_test/include/ct.hrl").
-include_lib("kernel/include/file.hrl").
@@ -41,7 +42,7 @@ all() ->
extract_filtered,
symlinks, open_add_close, cooked_compressed, memory, unicode,
read_other_implementations,
- sparse,init,leading_slash,dotdot].
+ sparse,init,leading_slash,dotdot,roundtrip_metadata].
groups() ->
[].
@@ -953,6 +954,42 @@ dotdot(Config) ->
ok.
+roundtrip_metadata(Config) ->
+ PrivDir = proplists:get_value(priv_dir, Config),
+ Dir = filename:join(PrivDir, ?FUNCTION_NAME),
+ ok = file:make_dir(Dir),
+
+ do_roundtrip_metadata(Dir, "name-does-not-matter"),
+ ok.
+
+do_roundtrip_metadata(Dir, File) ->
+ Tar = filename:join(Dir, atom_to_list(?FUNCTION_NAME)++".tar"),
+ BeamFile = code:which(compile),
+ {ok,Fd} = erl_tar:open(Tar, [write]),
+ ok = erl_tar:add(Fd, BeamFile, File, []),
+ ok = erl_tar:close(Fd),
+
+ ok = erl_tar:extract(Tar, [{cwd,Dir}]),
+
+ %% Make sure that size and modification times are the same
+ %% on all platforms.
+ {ok,OrigInfo} = file:read_file_info(BeamFile),
+ ExtractedFile = filename:join(Dir, File),
+ {ok,ExtractedInfo} = file:read_file_info(ExtractedFile),
+ #file_info{size=Size,mtime=Mtime,type=regular} = OrigInfo,
+ #file_info{size=Size,mtime=Mtime,type=regular} = ExtractedInfo,
+
+ %% On Unix platforms more fields are expected to be the same.
+ case os:type() of
+ {unix,_} ->
+ #file_info{access=Access,mode=Mode} = OrigInfo,
+ #file_info{access=Access,mode=Mode} = ExtractedInfo,
+ ok;
+ _ ->
+ ok
+ end.
+
+
%% Delete the given list of files.
delete_files([]) -> ok;
delete_files([Item|Rest]) ->
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-11 10:55:51 +0000