diff options
Diffstat (limited to 'erts/preloaded/src/prim_file.erl')
| -rw-r--r-- | erts/preloaded/src/prim_file.erl | 57 |
1 files changed, 37 insertions, 20 deletions
diff --git a/erts/preloaded/src/prim_file.erl b/erts/preloaded/src/prim_file.erl index 10be852e92..b18a57bfef 100644 --- a/erts/preloaded/src/prim_file.erl +++ b/erts/preloaded/src/prim_file.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2000-2010. All Rights Reserved. +%% Copyright Ericsson AB 2000-2011. All Rights Reserved. %% %% The contents of this file are subject to the Erlang Public License, %% Version 1.1, (the "License"); you may not use this file except in @@ -63,8 +63,8 @@ -include("file.hrl"). --define(DRV, efile). --define(FD_DRV, efile). +-define(DRV, "efile"). +-define(FD_DRV, "efile"). -define(LARGEFILESIZE, (1 bsl 63)). @@ -111,6 +111,7 @@ -define(FILE_RESP_EOF, 8). -define(FILE_RESP_FNAME, 9). -define(FILE_RESP_ALL_DATA, 10). +-define(FILE_RESP_LFNAME, 11). %% Open modes for the driver's open function. -define(EFILE_MODE_READ, 1). @@ -506,7 +507,7 @@ read_file(_) -> %% Takes a Port opened with open/1. read_file(Port, File) when is_port(Port), - (is_list(File) orelse is_binary(File))-> + (is_list(File) orelse is_binary(File)) -> Cmd = [?FILE_READ_FILE | pathname(File)], case drv_command(Port, Cmd) of {error, enomem} -> @@ -549,7 +550,7 @@ write_file(_, _) -> %% Returns {ok, Port}, the Port should be used as first argument in all %% the following functions. Returns {error, Reason} upon failure. start() -> - try erlang:open_port({spawn, atom_to_list(?DRV)}, [binary]) of + try erlang:open_port({spawn, ?DRV}, [binary]) of Port -> {ok, Port} catch @@ -832,7 +833,7 @@ drv_open(Driver, Portopts) -> {ok, Port} catch error:Reason -> - {error,Reason} + {error, Reason} end. @@ -864,9 +865,9 @@ drv_command(Port, Command) -> drv_command(Port, Command, R) when is_binary(Command) -> drv_command(Port, Command, true, R); drv_command(Port, Command, R) -> - try erlang:iolist_to_binary(Command) of - Bin -> - drv_command(Port, Bin, true, R) + try erlang:iolist_size(Command) of + _ -> + drv_command(Port, Command, true, R) catch error:Reason -> {error, Reason} @@ -914,6 +915,8 @@ drv_get_response(Port, R) when is_list(R) -> {ok, R}; {ok, Name} -> drv_get_response(Port, [Name|R]); + {append, Names} -> + drv_get_response(Port, append(Names, R)); Error -> Error end; @@ -938,6 +941,8 @@ drv_get_response(Port) -> %%%----------------------------------------------------------------- %%% Utility functions. +append([I | Is], R) when is_list(R) -> append(Is, [I | R]); +append([], R) -> R. %% Converts a list of mode atoms into an mode word for the driver. @@ -1041,8 +1046,8 @@ translate_response(?FILE_RESP_NUMBER, List) -> {N, []} = get_uint64(List), {ok, N}; translate_response(?FILE_RESP_DATA, List) -> - {N, Data} = get_uint64(List), - {ok, {N, Data}}; + {_N, _Data} = ND = get_uint64(List), + {ok, ND}; translate_response(?FILE_RESP_INFO, List) when is_list(List) -> {ok, transform_info_ints(get_uint32s(List))}; translate_response(?FILE_RESP_NUMERR, L0) -> @@ -1067,7 +1072,7 @@ translate_response(?FILE_RESP_N2DATA, {ok, {Size, Offset, D}}; translate_response(?FILE_RESP_N2DATA = X, L0) when is_list(L0) -> {Offset, L1} = get_uint64(L0), - {ReadSize, L2} = get_uint64(L1), + {ReadSize, L2} = get_uint64(L1), {Size, L3} = get_uint64(L2), case {ReadSize, L3} of {0, []} -> @@ -1087,10 +1092,14 @@ translate_response(?FILE_RESP_FNAME, Data) when is_binary(Data) -> {ok, prim_file:internal_native2name(Data)}; translate_response(?FILE_RESP_FNAME, Data) -> {ok, Data}; - +translate_response(?FILE_RESP_LFNAME, []) -> + ok; +translate_response(?FILE_RESP_LFNAME, Data) when is_binary(Data) -> + {append, transform_lfname(Data)}; +translate_response(?FILE_RESP_LFNAME, Data) -> + {append, transform_lfname(Data)}; translate_response(?FILE_RESP_ALL_DATA, Data) -> {ok, Data}; - translate_response(X, Data) -> {error, {bad_response_from_port, [X | Data]}}. @@ -1137,14 +1146,14 @@ date_to_bytes(undefined) -> date_to_bytes({{Y, Mon, D}, {H, Min, S}}) -> <<Y:32, Mon:32, D:32, H:32, Min:32, S:32>>. -% uint64([[X1, X2, X3, X4] = Y1 | [X5, X6, X7, X8] = Y2]) -> -% (uint32(Y1) bsl 32) bor uint32(Y2). +%% uint64([[X1, X2, X3, X4] = Y1 | [X5, X6, X7, X8] = Y2]) -> +%% (uint32(Y1) bsl 32) bor uint32(Y2). -% uint64(X1, X2, X3, X4, X5, X6, X7, X8) -> -% (uint32(X1, X2, X3, X4) bsl 32) bor uint32(X5, X6, X7, X8). +%% uint64(X1, X2, X3, X4, X5, X6, X7, X8) -> +%% (uint32(X1, X2, X3, X4) bsl 32) bor uint32(X5, X6, X7, X8). -% uint32([X1,X2,X3,X4]) -> -% (X1 bsl 24) bor (X2 bsl 16) bor (X3 bsl 8) bor X4. +%% uint32([X1,X2,X3,X4]) -> +%% (X1 bsl 24) bor (X2 bsl 16) bor (X3 bsl 8) bor X4. uint32(X1,X2,X3,X4) -> (X1 bsl 24) bor (X2 bsl 16) bor (X3 bsl 8) bor X4. @@ -1201,6 +1210,14 @@ transform_ldata(0, List, [Size | Sizes], R) -> {Front, Rear} = lists_split(List, Size), transform_ldata(0, Rear, Sizes, [Front | R]). +transform_lfname(<<>>) -> []; +transform_lfname(<<L:16, Name:L/binary, Names/binary>>) -> + [ prim_file:internal_native2name(Name) | transform_lfname(Names)]; +transform_lfname([]) -> []; +transform_lfname([L1,L2|Names]) -> + L = (L1 bsl 8) bor L2, + {Name, Rest} = lists_split(Names, L), + [Name | transform_lfname(Rest)]. lists_split(List, 0) when is_list(List) -> |