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authorZandra Hird <[email protected]>2015-03-17 12:44:31 +0100
committerZandra Hird <[email protected]>2015-03-17 12:44:50 +0100
commit94c86eb6325248e76156ba6d31882576b93d242f (patch)
tree40cb066e07e3baf3d2b1358bfd775c1a279ce9f5 /lib/stdlib/src
parentf991b0bb0ce200967f73b4d6505956a56e358b21 (diff)
parent3ec48aa1782af3b4d84d9bad8129127c2b9f4b9d (diff)
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Merge branch 'danielwhite/zip-port-leak-fix'
OTP-12566 * danielwhite/zip-port-leak-fix: Describe zip handles an opaque type Document the termination semantics of a zip handle Prevent zip:zip_open/1,2 from leaking ports
Diffstat (limited to 'lib/stdlib/src')
-rw-r--r--lib/stdlib/src/zip.erl46
1 files changed, 28 insertions, 18 deletions
diff --git a/lib/stdlib/src/zip.erl b/lib/stdlib/src/zip.erl
index b768c6d0b9..44e75ff15b 100644
--- a/lib/stdlib/src/zip.erl
+++ b/lib/stdlib/src/zip.erl
@@ -214,7 +214,9 @@
-type zip_comment() :: #zip_comment{}.
-type zip_file() :: #zip_file{}.
--export_type([create_option/0, filename/0]).
+-opaque handle() :: pid().
+
+-export_type([create_option/0, filename/0, handle/0]).
%% Open a zip archive with options
%%
@@ -500,7 +502,7 @@ do_list_dir(F, Options) ->
-spec(t(Archive) -> ok when
Archive :: file:name() | binary() | ZipHandle,
- ZipHandle :: pid()).
+ ZipHandle :: handle()).
t(F) when is_pid(F) -> zip_t(F);
t(F) when is_record(F, openzip) -> openzip_t(F);
@@ -524,7 +526,7 @@ do_t(F, RawPrint) ->
-spec(tt(Archive) -> ok when
Archive :: file:name() | binary() | ZipHandle,
- ZipHandle :: pid()).
+ ZipHandle :: handle()).
tt(F) when is_pid(F) -> zip_tt(F);
tt(F) when is_record(F, openzip) -> openzip_tt(F);
@@ -1114,15 +1116,19 @@ local_file_header_from_info_method_name(#file_info{mtime = MTime},
file_name_length = length(Name),
extra_field_length = 0}.
+server_init(Parent) ->
+ %% we want to know if our parent dies
+ process_flag(trap_exit, true),
+ server_loop(Parent, not_open).
%% small, simple, stupid zip-archive server
-server_loop(OpenZip) ->
+server_loop(Parent, OpenZip) ->
receive
{From, {open, Archive, Options}} ->
case openzip_open(Archive, Options) of
{ok, NewOpenZip} ->
From ! {self(), {ok, self()}},
- server_loop(NewOpenZip);
+ server_loop(Parent, NewOpenZip);
Error ->
From ! {self(), Error}
end;
@@ -1130,43 +1136,47 @@ server_loop(OpenZip) ->
From ! {self(), openzip_close(OpenZip)};
{From, get} ->
From ! {self(), openzip_get(OpenZip)},
- server_loop(OpenZip);
+ server_loop(Parent, OpenZip);
{From, {get, FileName}} ->
From ! {self(), openzip_get(FileName, OpenZip)},
- server_loop(OpenZip);
+ server_loop(Parent, OpenZip);
{From, list_dir} ->
From ! {self(), openzip_list_dir(OpenZip)},
- server_loop(OpenZip);
+ server_loop(Parent, OpenZip);
{From, {list_dir, Opts}} ->
From ! {self(), openzip_list_dir(OpenZip, Opts)},
- server_loop(OpenZip);
+ server_loop(Parent, OpenZip);
{From, get_state} ->
From ! {self(), OpenZip},
- server_loop(OpenZip);
+ server_loop(Parent, OpenZip);
+ {'EXIT', Parent, Reason} ->
+ openzip_close(OpenZip),
+ exit({parent_died, Reason});
_ ->
{error, bad_msg}
end.
-spec(zip_open(Archive) -> {ok, ZipHandle} | {error, Reason} when
Archive :: file:name() | binary(),
- ZipHandle :: pid(),
+ ZipHandle :: handle(),
Reason :: term()).
zip_open(Archive) -> zip_open(Archive, []).
-spec(zip_open(Archive, Options) -> {ok, ZipHandle} | {error, Reason} when
Archive :: file:name() | binary(),
- ZipHandle :: pid(),
+ ZipHandle :: handle(),
Options :: [Option],
Option :: cooked | memory | {cwd, CWD :: file:filename()},
Reason :: term()).
zip_open(Archive, Options) ->
- Pid = spawn(fun() -> server_loop(not_open) end),
- request(self(), Pid, {open, Archive, Options}).
+ Self = self(),
+ Pid = spawn_link(fun() -> server_init(Self) end),
+ request(Self, Pid, {open, Archive, Options}).
-spec(zip_get(ZipHandle) -> {ok, [Result]} | {error, Reason} when
- ZipHandle :: pid(),
+ ZipHandle :: handle(),
Result :: file:name() | {file:name(), binary()},
Reason :: term()).
@@ -1174,14 +1184,14 @@ zip_get(Pid) when is_pid(Pid) ->
request(self(), Pid, get).
-spec(zip_close(ZipHandle) -> ok | {error, einval} when
- ZipHandle :: pid()).
+ ZipHandle :: handle()).
zip_close(Pid) when is_pid(Pid) ->
request(self(), Pid, close).
-spec(zip_get(FileName, ZipHandle) -> {ok, Result} | {error, Reason} when
FileName :: file:name(),
- ZipHandle :: pid(),
+ ZipHandle :: handle(),
Result :: file:name() | {file:name(), binary()},
Reason :: term()).
@@ -1190,7 +1200,7 @@ zip_get(FileName, Pid) when is_pid(Pid) ->
-spec(zip_list_dir(ZipHandle) -> {ok, Result} | {error, Reason} when
Result :: [zip_comment() | zip_file()],
- ZipHandle :: pid(),
+ ZipHandle :: handle(),
Reason :: term()).
zip_list_dir(Pid) when is_pid(Pid) ->