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-rw-r--r--lib/stdlib/src/dets.erl98
1 files changed, 55 insertions, 43 deletions
diff --git a/lib/stdlib/src/dets.erl b/lib/stdlib/src/dets.erl
index 68b157c13c..c32da1624f 100644
--- a/lib/stdlib/src/dets.erl
+++ b/lib/stdlib/src/dets.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1996-2013. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2014. 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
@@ -469,7 +469,7 @@ is_compatible_bchunk_format(Tab, Term) ->
is_dets_file(FileName) ->
case catch read_file_header(FileName, read, false) of
{ok, Fd, FH} ->
- file:close(Fd),
+ _ = file:close(Fd),
FH#fileheader.cookie =:= ?MAGIC;
{error, {tooshort, _}} ->
false;
@@ -1384,7 +1384,8 @@ do_apply_op(Op, From, Head, N) ->
end,
if
From =/= self() ->
- From ! {self(), {error, {dets_bug, Name, Op, Bad}}};
+ From ! {self(), {error, {dets_bug, Name, Op, Bad}}},
+ ok;
true -> % auto_save | may_grow | {delayed_write, _}
ok
end,
@@ -1634,7 +1635,8 @@ start_auto_save_timer(Head) when Head#head.auto_save =:= infinity ->
ok;
start_auto_save_timer(Head) ->
Millis = Head#head.auto_save,
- erlang:send_after(Millis, self(), ?DETS_CALL(self(), auto_save)).
+ _Ref = erlang:send_after(Millis, self(), ?DETS_CALL(self(), auto_save)),
+ ok.
%% Version 9: Peek the message queue and try to evaluate several
%% lookup requests in parallel. Evalute delete_object, delete and
@@ -1683,7 +1685,7 @@ stream_end(Head, Pids0, C, N, Next) ->
%% replies to delete and insert requests even if the
%% latter requests were made before the lookup requests,
%% which can be confusing.)
- lookup_replies(Found),
+ _ = lookup_replies(Found),
stream_end1(Pids0, Next, N, C, Head1, PwriteList);
Head1 when is_record(Head1, head) ->
stream_end2(Pids0, Pids0, Next, N, C, Head1, ok);
@@ -1733,7 +1735,7 @@ lookup_replies(Q) ->
lookup_replies(P, O, []) ->
lookup_reply(P, O);
lookup_replies(P, O, [{P2,O2} | L]) ->
- lookup_reply(P, O),
+ _ = lookup_reply(P, O),
lookup_replies(P2, lists:append(O2), L).
%% If a list of Pid then op was {member, Key}. Inlined.
@@ -1783,6 +1785,7 @@ read_file_header(FileName, Access, RamFile) ->
Version =:= 9 ->
dets_v9:read_file_header(Fd, FileName);
true ->
+ _ = file:close(Fd),
throw({error, {not_a_dets_file, FileName}})
end.
@@ -1790,12 +1793,15 @@ fclose(Head) ->
{Head1, Res} = perform_save(Head, false),
case Head1#head.ram_file of
true ->
- ignore;
+ Res;
false ->
dets_utils:stop_disk_map(),
- file:close(Head1#head.fptr)
- end,
- Res.
+ Res2 = file:close(Head1#head.fptr),
+ if
+ Res2 =:= ok -> Res;
+ true -> Res2
+ end
+ end.
%% -> {NewHead, Res}
perform_save(Head, DoSync) when Head#head.update_mode =:= dirty;
@@ -2002,7 +2008,7 @@ remove_fix(Head, Pid, How) ->
end.
do_stop(Head) ->
- unlink_fixing_procs(Head),
+ _NewHead = unlink_fixing_procs(Head),
fclose(Head).
unlink_fixing_procs(Head) ->
@@ -2010,7 +2016,7 @@ unlink_fixing_procs(Head) ->
false ->
Head;
{_, Counters} ->
- lists:map(fun({Pid, _Counter}) -> unlink(Pid) end, Counters),
+ lists:foreach(fun({Pid, _Counter}) -> unlink(Pid) end, Counters),
Head#head{fixed = false,
freelists = dets_utils:get_freelists(Head)}
end.
@@ -2021,8 +2027,9 @@ check_growth(Head) ->
NoThings = no_things(Head),
if
NoThings > Head#head.next ->
- erlang:send_after(200, self(),
- ?DETS_CALL(self(), may_grow)); % Catch up.
+ _Ref = erlang:send_after
+ (200, self(), ?DETS_CALL(self(), may_grow)), % Catch up.
+ ok;
true ->
ok
end.
@@ -2107,6 +2114,8 @@ test_bchunk_format(Head, Term) ->
do_open_file([Fname, Verbose], Parent, Server, Ref) ->
case catch fopen2(Fname, Ref) of
+ {error, {tooshort, _}} ->
+ err({error, {not_a_dets_file, Fname}});
{error, _Reason} = Error ->
err(Error);
{ok, Head} ->
@@ -2120,11 +2129,10 @@ do_open_file([Fname, Verbose], Parent, Server, Ref) ->
[Bad]),
{error, {dets_bug, Fname, Bad}}
end;
-do_open_file([Tab, OpenArgs, Verb], Parent, Server, Ref) ->
+do_open_file([Tab, OpenArgs, Verb], Parent, Server, _Ref) ->
case catch fopen3(Tab, OpenArgs) of
{error, {tooshort, _}} ->
- file:delete(OpenArgs#open_args.file),
- do_open_file([Tab, OpenArgs, Verb], Parent, Server, Ref);
+ err({error, {not_a_dets_file, OpenArgs#open_args.file}});
{error, _Reason} = Error ->
err(Error);
{ok, Head} ->
@@ -2480,7 +2488,6 @@ fopen2(Fname, Tab) ->
{ok, _} ->
Acc = read_write,
Ram = false,
- %% Fd is not always closed upon error, but exit is soon called.
{ok, Fd, FH} = read_file_header(Fname, Acc, Ram),
Mod = FH#fileheader.mod,
Do = case Mod:check_file_header(FH, Fd) of
@@ -2536,7 +2543,6 @@ fopen_existing_file(Tab, OpenArgs) ->
ram_file = Ram, delayed_write = CacheSz, auto_save =
Auto, access = Acc, version = Version, debug = Debug} =
OpenArgs,
- %% Fd is not always closed upon error, but exit is soon called.
{ok, Fd, FH} = read_file_header(Fname, Acc, Ram),
V9 = (Version =:= 9) or (Version =:= default),
MinF = (MinSlots =:= default) or (MinSlots =:= FH#fileheader.min_no_slots),
@@ -2671,11 +2677,11 @@ fopen_init_file(Tab, OpenArgs) ->
case catch Mod:initiate_file(Fd, Tab, Fname, Type, Kp, MinSlots, MaxSlots,
Ram, CacheSz, Auto, true) of
{error, Reason} when Ram ->
- file:close(Fd),
+ _ = file:close(Fd),
throw({error, Reason});
{error, Reason} ->
- file:close(Fd),
- file:delete(Fname),
+ _ = file:close(Fd),
+ _ = file:delete(Fname),
throw({error, Reason});
{ok, Head} ->
start_auto_save_timer(Head),
@@ -2730,8 +2736,8 @@ compact(SourceHead) ->
{ok, H} ->
H;
Error ->
- file:close(Fd),
- file:delete(Tmp),
+ _ = file:close(Fd),
+ _ = file:delete(Tmp),
throw(Error)
end,
@@ -2748,12 +2754,12 @@ compact(SourceHead) ->
if
R =:= ok -> ok;
true ->
- file:delete(Tmp),
+ _ = file:delete(Tmp),
throw(R)
end;
Err ->
- file:close(Fd),
- file:delete(Tmp),
+ _ = file:close(Fd),
+ _ = file:delete(Tmp),
throw(Err)
end.
@@ -2777,7 +2783,7 @@ fsck(Fd, Tab, Fname, FH, MinSlotsArg, MaxSlotsArg, Version) ->
BetterSlotNumbers = {MinSlots, BetterNoSlots, MaxSlots},
case fsck_try(Fd, Tab, FH, Fname, BetterSlotNumbers, Version) of
{try_again, _} ->
- file:close(Fd),
+ _ = file:close(Fd),
{error, {cannot_repair, Fname}};
Else ->
Else
@@ -2818,15 +2824,15 @@ fsck_try(Fd, Tab, FH, Fname, SlotNumbers, Version) ->
if
R =:= ok -> ok;
true ->
- file:delete(Tmp),
+ _ = file:delete(Tmp),
R
end;
TryAgainOrError ->
- file:delete(Tmp),
+ _ = file:delete(Tmp),
TryAgainOrError
end;
Error ->
- file:close(Fd),
+ _ = file:close(Fd),
Error
end.
@@ -2855,13 +2861,13 @@ fsck_try_est(Head, Fd, Fname, SlotNumbers, FH) ->
Bulk = false,
case Reply of
{ok, NoDups, H1} ->
- file:close(Fd),
+ _ = file:close(Fd),
fsck_copy(SizeData, H1, Bulk, NoDups);
{try_again, _} = Return ->
close_files(Bulk, SizeData, Head),
Return;
Else ->
- file:close(Fd),
+ _ = file:close(Fd),
close_files(Bulk, SizeData, Head),
Else
end.
@@ -2896,14 +2902,20 @@ fsck_copy1([SzData | L], Head, Bulk, NoDups) ->
{LogSz, Pos, {FileName, Fd}, NoObjects} = SzData,
Size = if NoObjects =:= 0 -> 0; true -> ?POW(LogSz-1) end,
ExpectedSize = Size * NoObjects,
- close_tmp(Fd),
- case file:position(Out, Pos) of
- {ok, Pos} -> ok;
- PError -> dets_utils:file_error(FileName, PError)
+ case close_tmp(Fd) of
+ ok -> ok;
+ Err ->
+ close_files(Bulk, L, Head),
+ dets_utils:file_error(FileName, Err)
end,
- {ok, Pos} = file:position(Out, Pos),
+ case file:position(Out, Pos) of
+ {ok, Pos} -> ok;
+ Err2 ->
+ close_files(Bulk, L, Head),
+ dets_utils:file_error(Head#head.filename, Err2)
+ end,
CR = file:copy({FileName, [raw,binary]}, Out),
- file:delete(FileName),
+ _ = file:delete(FileName),
case CR of
{ok, Copied} when Copied =:= ExpectedSize;
NoObjects =:= 0 -> % the segments
@@ -2937,11 +2949,11 @@ free_n_objects(Head, Addr, Size, N) ->
free_n_objects(NewHead, NewAddr, Size, N-1).
close_files(false, SizeData, Head) ->
- file:close(Head#head.fptr),
+ _ = file:close(Head#head.fptr),
close_files(true, SizeData, Head);
close_files(true, SizeData, _Head) ->
Fun = fun({_Size, _Pos, {FileName, Fd}, _No}) ->
- close_tmp(Fd),
+ _ = close_tmp(Fd),
file:delete(FileName);
(_) ->
ok
@@ -3261,7 +3273,7 @@ err(Error) ->
file_info(FileName) ->
case catch read_file_header(FileName, read, false) of
{ok, Fd, FH} ->
- file:close(Fd),
+ _ = file:close(Fd),
(FH#fileheader.mod):file_info(FH);
Other ->
Other
@@ -3290,7 +3302,7 @@ view(FileName) ->
X ->
X
end
- after file:close(Fd)
+ after _ = file:close(Fd)
end;
X ->
X
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