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authorLukas Larsson <[email protected]>2012-05-23 11:23:54 +0200
committerLukas Larsson <[email protected]>2012-05-23 11:23:54 +0200
commit1ba2039020738673b3913be0e48d83713503a3b7 (patch)
treee62d160f353b94e076fdbec2834361034bd7318c
parente4717301b73f2d7b2716b625e1b647b35d2815be (diff)
parent3e5015a959c9533582b0e4a027158ea8252f7c31 (diff)
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Merge branch 'lukas/kernel/fix-gen_udp_tcp-leak/OTP-10094' into maint
* lukas/kernel/fix-gen_udp_tcp-leak/OTP-10094: Add testcase for controlling_process(P,self()) Fix port leaking after controlling_process(Port, self())
-rw-r--r--lib/kernel/doc/src/gen_tcp.xml2
-rw-r--r--lib/kernel/doc/src/gen_udp.xml4
-rw-r--r--lib/kernel/src/gen_sctp.erl5
-rw-r--r--lib/kernel/src/gen_udp.erl5
-rw-r--r--lib/kernel/src/inet.erl4
-rw-r--r--lib/kernel/test/gen_tcp_misc_SUITE.erl31
6 files changed, 43 insertions, 8 deletions
diff --git a/lib/kernel/doc/src/gen_tcp.xml b/lib/kernel/doc/src/gen_tcp.xml
index daf26a0b63..11a0843c10 100644
--- a/lib/kernel/doc/src/gen_tcp.xml
+++ b/lib/kernel/doc/src/gen_tcp.xml
@@ -324,7 +324,7 @@ do_recv(Sock, Bs) ->
<c><anno>Socket</anno></c>. The controlling process is the process which
receives messages from the socket. If called by any other
process than the current controlling process,
- <c>{error, eperm}</c> is returned.</p>
+ <c>{error, not_owner}</c> is returned.</p>
</desc>
</func>
<func>
diff --git a/lib/kernel/doc/src/gen_udp.xml b/lib/kernel/doc/src/gen_udp.xml
index 6b83dfa030..726dc30546 100644
--- a/lib/kernel/doc/src/gen_udp.xml
+++ b/lib/kernel/doc/src/gen_udp.xml
@@ -189,7 +189,9 @@
<desc>
<p>Assigns a new controlling process <c><anno>Pid</anno></c> to
<c><anno>Socket</anno></c>. The controlling process is the process which
- receives messages from the socket.</p>
+ receives messages from the socket. If called by any other
+ process than the current controlling process,
+ <c>{error, not_owner}</c> is returned.</p>
</desc>
</func>
<func>
diff --git a/lib/kernel/src/gen_sctp.erl b/lib/kernel/src/gen_sctp.erl
index d8954f0cf7..8fa963ec78 100644
--- a/lib/kernel/src/gen_sctp.erl
+++ b/lib/kernel/src/gen_sctp.erl
@@ -425,9 +425,10 @@ error_string(X) ->
erlang:error(badarg, [X]).
--spec controlling_process(Socket, Pid) -> ok when
+-spec controlling_process(Socket, Pid) -> ok | {error, Reason} when
Socket :: sctp_socket(),
- Pid :: pid().
+ Pid :: pid(),
+ Reason :: closed | not_owner | inet:posix().
controlling_process(S, Pid) when is_port(S), is_pid(Pid) ->
inet:udp_controlling_process(S, Pid);
diff --git a/lib/kernel/src/gen_udp.erl b/lib/kernel/src/gen_udp.erl
index 8688799ae9..914854c65c 100644
--- a/lib/kernel/src/gen_udp.erl
+++ b/lib/kernel/src/gen_udp.erl
@@ -185,9 +185,10 @@ connect(S, Address, Port) when is_port(S) ->
Error
end.
--spec controlling_process(Socket, Pid) -> ok when
+-spec controlling_process(Socket, Pid) -> ok | {error, Reason} when
Socket :: socket(),
- Pid :: pid().
+ Pid :: pid(),
+ Reason :: closed | not_owner | inet:posix().
controlling_process(S, NewOwner) ->
inet:udp_controlling_process(S, NewOwner).
diff --git a/lib/kernel/src/inet.erl b/lib/kernel/src/inet.erl
index abaf4486dc..0bb5444dbb 100644
--- a/lib/kernel/src/inet.erl
+++ b/lib/kernel/src/inet.erl
@@ -1246,6 +1246,8 @@ udp_close(S) when is_port(S) ->
%% Set controlling process for TCP socket.
tcp_controlling_process(S, NewOwner) when is_port(S), is_pid(NewOwner) ->
case erlang:port_info(S, connected) of
+ {connected, NewOwner} ->
+ ok;
{connected, Pid} when Pid =/= self() ->
{error, not_owner};
undefined ->
@@ -1297,6 +1299,8 @@ tcp_sync_input(S, Owner, Flag) ->
%% Set controlling process for UDP or SCTP socket.
udp_controlling_process(S, NewOwner) when is_port(S), is_pid(NewOwner) ->
case erlang:port_info(S, connected) of
+ {connected, NewOwner} ->
+ ok;
{connected, Pid} when Pid =/= self() ->
{error, not_owner};
_ ->
diff --git a/lib/kernel/test/gen_tcp_misc_SUITE.erl b/lib/kernel/test/gen_tcp_misc_SUITE.erl
index 0c53b1e85b..1592399996 100644
--- a/lib/kernel/test/gen_tcp_misc_SUITE.erl
+++ b/lib/kernel/test/gen_tcp_misc_SUITE.erl
@@ -24,7 +24,8 @@
-export([all/0, suite/0,groups/0,init_per_suite/1, end_per_suite/1,
init_per_group/2,end_per_group/2,
- controlling_process/1, no_accept/1, close_with_pending_output/1,
+ controlling_process/1, controlling_process_self/1,
+ no_accept/1, close_with_pending_output/1,
data_before_close/1, iter_max_socks/1, get_status/1,
passive_sockets/1, accept_closed_by_other_process/1,
init_per_testcase/2, end_per_testcase/2,
@@ -58,7 +59,7 @@ end_per_testcase(_Func, Config) ->
suite() -> [{ct_hooks,[ts_install_cth]}].
all() ->
- [controlling_process, no_accept,
+ [controlling_process, controlling_process_self, no_accept,
close_with_pending_output, data_before_close,
iter_max_socks, passive_sockets,
accept_closed_by_other_process, otp_3924, closed_socket,
@@ -307,6 +308,32 @@ not_owner(S) ->
ok
end.
+controlling_process_self(doc) ->
+ ["Open a listen port and assign the controlling process to "
+ "it self, then exit and make sure the port is closed properly."];
+controlling_process_self(Config) when is_list(Config) ->
+ S = self(),
+ process_flag(trap_exit,true),
+ spawn_link(fun() ->
+ {ok,Sock} = gen_tcp:listen(0,[]),
+ S ! {socket, Sock},
+ ok = gen_tcp:controlling_process(Sock,self()),
+ S ! done
+ end),
+ receive
+ done ->
+ receive
+ {socket,Sock} ->
+ process_flag(trap_exit,false),
+ %% Make sure the port is invalid after process crash
+ {error,einval} = inet:port(Sock)
+ end;
+ Msg when element(1,Msg) /= socket ->
+ process_flag(trap_exit,false),
+ exit({unknown_msg,Msg})
+ end.
+
+
no_accept(doc) ->
["Open a listen port and connect to it, then close the listen port ",
"without doing any accept. The connected socket should receive ",