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authorKostis Sagonas <kostis@it.uu.se>2016-10-19 12:39:22 +0200
committerKostis Sagonas <kostis@it.uu.se>2016-10-19 12:39:22 +0200
commit5693b4cddd9a855a3277dc3aa51f22a2f768fe4a (patch)
tree4bf5f4084a4a5d564198fd88f7cda729e949b468 /lib/inets/src
parente311fd770869478f19d591e4229b09f61934f4f4 (diff)
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Eliminate unmatched return dialyzer warnings
The code contained a lot of unmatched return warnings, mostly in function calls that were executed only for their side-effects. Also, there were various places where possible errors were not checked and now they are. This may cause crashes, both in the ftp testsuite (which I have not run) and in situations were errors occur but are ignored.
Diffstat (limited to 'lib/inets/src')
-rw-r--r--lib/inets/src/ftp/ftp.erl44
1 files changed, 23 insertions, 21 deletions
diff --git a/lib/inets/src/ftp/ftp.erl b/lib/inets/src/ftp/ftp.erl
index e43ba9e5be..d4959238e1 100644
--- a/lib/inets/src/ftp/ftp.erl
+++ b/lib/inets/src/ftp/ftp.erl
@@ -1096,7 +1096,7 @@ init(Options) ->
erlang:monitor(process, Client),
%% Make sure inet is started
- inet_db:start(),
+ _ = inet_db:start(),
%% Where are we
{ok, Dir} = file:get_cwd(),
@@ -1106,15 +1106,17 @@ init(Options) ->
trace ->
dbg:tracer(),
dbg:p(all, [call]),
- dbg:tpl(ftp, [{'_', [], [{return_trace}]}]),
- dbg:tpl(ftp_response, [{'_', [], [{return_trace}]}]),
- dbg:tpl(ftp_progress, [{'_', [], [{return_trace}]}]);
+ {ok, _} = dbg:tpl(ftp, [{'_', [], [{return_trace}]}]),
+ {ok, _} = dbg:tpl(ftp_response, [{'_', [], [{return_trace}]}]),
+ {ok, _} = dbg:tpl(ftp_progress, [{'_', [], [{return_trace}]}]),
+ ok;
debug ->
dbg:tracer(),
dbg:p(all, [call]),
- dbg:tp(ftp, [{'_', [], [{return_trace}]}]),
- dbg:tp(ftp_response, [{'_', [], [{return_trace}]}]),
- dbg:tp(ftp_progress, [{'_', [], [{return_trace}]}]);
+ {ok, _} = dbg:tp(ftp, [{'_', [], [{return_trace}]}]),
+ {ok, _} = dbg:tp(ftp_response, [{'_', [], [{return_trace}]}]),
+ {ok, _} = dbg:tp(ftp_progress, [{'_', [], [{return_trace}]}]),
+ ok;
_ ->
%% Keep silent
ok
@@ -1296,8 +1298,7 @@ handle_call({_,{rmdir, Dir}}, From, #state{chunk = false} = State) ->
activate_ctrl_connection(State),
{noreply, State#state{client = From}};
-handle_call({_,{type, Type}}, From, #state{chunk = false}
- = State) ->
+handle_call({_,{type, Type}}, From, #state{chunk = false} = State) ->
case Type of
ascii ->
send_ctrl_message(State, mk_cmd("TYPE A", [])),
@@ -1455,7 +1456,7 @@ handle_info({Trpt, Socket, Data},
#state{dsock = {Trpt,Socket},
caller = {recv_file, Fd}} = State0) when Trpt==tcp;Trpt==ssl ->
?DBG('L~p --data ~p ----> ~s~p~n',[?LINE,Socket,Data,State0]),
- file_write(binary_to_list(Data), Fd),
+ ok = file_write(binary_to_list(Data), Fd),
progress_report({binary, Data}, State0),
State = activate_data_connection(State0),
{noreply, State};
@@ -1476,7 +1477,7 @@ handle_info({Trpt, Socket, Data}, #state{dsock = {Trpt,Socket}} = State0) when T
handle_info({Cls, Socket}, #state{dsock = {Trpt,Socket},
caller = {recv_file, Fd}}
= State) when {Cls,Trpt}=={tcp_closed,tcp} ; {Cls,Trpt}=={ssl_closed,ssl} ->
- file_close(Fd),
+ ok = file_close(Fd),
progress_report({transfer_size, 0}, State),
activate_ctrl_connection(State),
{noreply, State#state{dsock = undefined, data = <<>>}};
@@ -2062,7 +2063,7 @@ handle_ctrl_result({pos_prel, _}, #state{caller = {recv_file, _}} = State0) ->
end;
handle_ctrl_result({Status, _}, #state{caller = {recv_file, Fd}} = State) ->
- file_close(Fd),
+ ok = file_close(Fd),
close_data_connection(State),
ctrl_result_response(Status, State#state{dsock = undefined},
{error, epath});
@@ -2338,7 +2339,7 @@ accept_data_connection(#state{mode = passive} = State) ->
send_ctrl_message(_S=#state{csock = Socket, verbose = Verbose}, Message) ->
verbose(lists:flatten(Message),Verbose,send),
?DBG('<--ctrl ~p ---- ~s~p~n',[Socket,Message,_S]),
- send_message(Socket, Message).
+ ok = send_message(Socket, Message).
send_data_message(_S=#state{dsock = Socket}, Message) ->
?DBG('<==data ~p ==== ~s~n~p~n',[Socket,Message,_S]),
@@ -2360,12 +2361,13 @@ send_message({ssl, Socket}, Message) ->
ssl:send(Socket, Message).
activate_ctrl_connection(#state{csock = Socket, ctrl_data = {<<>>, _, _}}) ->
- activate_connection(Socket);
+ ok = activate_connection(Socket);
activate_ctrl_connection(#state{csock = Socket}) ->
- activate_connection(Socket),
+ ok = activate_connection(Socket),
%% We have already received at least part of the next control message,
%% that has been saved in ctrl_data, process this first.
- self() ! {socket_type(Socket), unwrap_socket(Socket), <<>>}.
+ self() ! {socket_type(Socket), unwrap_socket(Socket), <<>>},
+ ok.
unwrap_socket({tcp,Socket}) -> Socket;
unwrap_socket({ssl,Socket}) -> Socket.
@@ -2374,7 +2376,7 @@ socket_type({tcp,_Socket}) -> tcp;
socket_type({ssl,_Socket}) -> ssl.
activate_data_connection(#state{dsock = Socket} = State) ->
- activate_connection(Socket),
+ ok = activate_connection(Socket),
State.
activate_connection({tcp, Socket}) -> inet:setopts(Socket, [{active, once}]);
@@ -2390,17 +2392,17 @@ close_connection({lsock,Socket}) -> gen_tcp:close(Socket);
close_connection({tcp, Socket}) -> gen_tcp:close(Socket);
close_connection({ssl, Socket}) -> ssl:close(Socket).
-%% ------------ FILE HANDELING ----------------------------------------
+%% ------------ FILE HANDLING ----------------------------------------
send_file(#state{tls_upgrading_data_connection = {true, CTRL, _}} = State, Fd) ->
{noreply, State#state{tls_upgrading_data_connection = {true, CTRL, ?MODULE, send_file, Fd}}};
send_file(State, Fd) ->
case file_read(Fd) of
- {ok, N, Bin} when N > 0->
+ {ok, N, Bin} when N > 0 ->
send_data_message(State, Bin),
progress_report({binary, Bin}, State),
send_file(State, Fd);
{ok, _, _} ->
- file_close(Fd),
+ ok = file_close(Fd),
close_data_connection(State),
progress_report({transfer_size, 0}, State),
activate_ctrl_connection(State),
@@ -2507,7 +2509,7 @@ progress_report(stop, #state{progress = ProgressPid}) ->
ftp_progress:stop(ProgressPid);
progress_report({binary, Data}, #state{progress = ProgressPid}) ->
ftp_progress:report(ProgressPid, {transfer_size, size(Data)});
-progress_report(Report, #state{progress = ProgressPid}) ->
+progress_report(Report, #state{progress = ProgressPid}) ->
ftp_progress:report(ProgressPid, Report).