diff options
| -rw-r--r-- | lib/stdlib/src/erl_tar.erl | 47 | ||||
| -rw-r--r-- | lib/stdlib/src/erl_tar.hrl | 8 | ||||
| -rw-r--r-- | lib/stdlib/test/tar_SUITE.erl | 41 |
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]) -> |