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-rw-r--r--lib/snmp/src/agent/snmp_view_based_acm_mib.erl29
-rw-r--r--lib/snmp/src/agent/snmpa_agent.erl4
-rw-r--r--lib/snmp/src/agent/snmpa_vacm.erl80
3 files changed, 41 insertions, 72 deletions
diff --git a/lib/snmp/src/agent/snmp_view_based_acm_mib.erl b/lib/snmp/src/agent/snmp_view_based_acm_mib.erl
index 37f6dd3f26..2cee91b081 100644
--- a/lib/snmp/src/agent/snmp_view_based_acm_mib.erl
+++ b/lib/snmp/src/agent/snmp_view_based_acm_mib.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1999-2011. All Rights Reserved.
+%% Copyright Ericsson AB 1999-2012. 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
@@ -203,18 +203,16 @@ init_sec2group_table([Row | T]) ->
init_sec2group_table(T);
init_sec2group_table([]) -> true.
-init_access_table([{GN, Prefix, Model, Level, Row} | T]) ->
-%% ?vtrace("init access table: "
-%% "~n GN: ~p"
-%% "~n Prefix: ~p"
-%% "~n Model: ~p"
-%% "~n Level: ~p"
-%% "~n Row: ~p",[GN, Prefix, Model, Level, Row]),
- Key = [length(GN) | GN] ++ [length(Prefix) | Prefix] ++ [Model, Level],
- snmpa_vacm:insert([{Key, Row}], false),
- init_access_table(T);
-init_access_table([]) ->
- snmpa_vacm:dump_table().
+make_access_key(GN, Prefix, Model, Level) ->
+ [length(GN) | GN] ++ [length(Prefix) | Prefix] ++ [Model, Level].
+
+make_access_entry({GN, Prefix, Model, Level, Row}) ->
+ Key = make_access_key(GN, Prefix, Model, Level),
+ {Key, Row}.
+
+init_access_table(TableData) ->
+ TableData2 = [make_access_entry(E) || E <- TableData],
+ snmpa_vacm:insert(TableData2, true).
init_view_table([Row | T]) ->
%% ?vtrace("init view table: "
@@ -276,10 +274,7 @@ add_access(GroupName, Prefix, SecModel, SecLevel, Match, RV, WV, NV) ->
Match, RV, WV, NV},
case (catch check_vacm(Access)) of
{ok, {vacmAccess, {GN, Pref, SM, SL, Row}}} ->
- Key1 = [length(GN) | GN],
- Key2 = [length(Pref) | Pref],
- Key3 = [SM, SL],
- Key = Key1 ++ Key2 ++ Key3,
+ Key = make_access_key(GN, Pref, SM, SL),
snmpa_vacm:insert([{Key, Row}], false),
snmpa_agent:invalidate_ca_cache(),
{ok, Key};
diff --git a/lib/snmp/src/agent/snmpa_agent.erl b/lib/snmp/src/agent/snmpa_agent.erl
index b78f520c50..5db3eab012 100644
--- a/lib/snmp/src/agent/snmpa_agent.erl
+++ b/lib/snmp/src/agent/snmpa_agent.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1996-2011. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2012. 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
@@ -4081,7 +4081,7 @@ handle_serializer_down(Mon, Tag) ->
%% ------------------------------------------------------------------------
-agent_info(#state{worker = W, set_worker = SW}) ->
+agent_info(#state{worker = W, set_worker = SW}) ->
case (catch get_agent_info(W, SW)) of
Info when is_list(Info) ->
Info;
diff --git a/lib/snmp/src/agent/snmpa_vacm.erl b/lib/snmp/src/agent/snmpa_vacm.erl
index efe6378105..2cbc11d280 100644
--- a/lib/snmp/src/agent/snmpa_vacm.erl
+++ b/lib/snmp/src/agent/snmpa_vacm.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1999-2010. All Rights Reserved.
+%% Copyright Ericsson AB 1999-2012. 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
@@ -267,71 +267,45 @@ dump_table(_) ->
ok.
-%% We should really make an effort to serialize the dumping
-%% to ensure that several processes that dump at-the-same-time
-%% do not trash each others dumps.
-%% <SUGGESTION>
-%% Send the request to the master agent, which, if there is no
-%% dumper already running, spawns a (temporary) dumper process.
-%% If there is already a running dumper process, instead increment
-%% the dump_request counter.
-%% When the dumper process exits, the master agent checks the
-%% the dump_request counter, and if that is greater than zero,
-%% create another dumper process and resets the counter.
-%% In this way the dumping is serialized, but the master-agent
-%% process is not burdend by the dumping.
-%% </SUGGESTION>
dump_table() ->
- %% The dumper fun is executed in a specially started process,
- %% that does that one thing and then exits.
- %% Also, to prevent the system to run "wild" (keep calling
- %% dump function before they are done), the agents serialize
- %% function return when that dump is done!
- Dumper =
- fun() ->
- [{_, FName}] = ets:lookup(snmp_agent_table, snmpa_vacm_file),
- %% TmpName = FName ++ ".tmp",
- TmpName = unique_name(FName),
- case ets:tab2file(snmpa_vacm, TmpName) of
- ok ->
- case file:rename(TmpName, FName) of
- ok ->
- ok;
- Else -> % What is this? Undocumented return code...
- user_err("Warning: could not move VACM db ~p"
- " (~p)", [FName, Else])
- end;
- {error, Reason} ->
- user_err("Warning: could not save vacm db ~p (~p)",
- [FName, Reason])
- end
- end,
- snmpa_agent:serialize(snmpa_vacm_dump_request, Dumper).
-
+ [{_, FName}] = ets:lookup(snmp_agent_table, snmpa_vacm_file),
+ TmpName = unique_table_name(FName),
+ case ets:tab2file(snmpa_vacm, TmpName) of
+ ok ->
+ case file:rename(TmpName, FName) of
+ ok ->
+ ok;
+ Else -> % What is this? Undocumented return code...
+ user_err("Warning: could not move VACM db ~p"
+ " (~p)", [FName, Else])
+ end;
+ {error, Reason} ->
+ user_err("Warning: could not save vacm db ~p (~p)",
+ [FName, Reason])
+ end.
%% This little thing is an attempt to create a "unique" filename
%% in order to minimize the risk of two processes at the same
%% time dumping the table.
-%% The serialization handled by the agent does this much better,
-%% but this also gives us a "timestamp" which could be usefull for
-%% debugging reasons.
-unique_name(Pre) ->
- unique_name(Pre, os:timestamp()).
-
-unique_name(Pre, {_A, _B, C} = Timestamp) ->
- {Date, Time} = calendar:now_to_datetime(Timestamp),
+unique_table_name(Pre) ->
+ %% We want something that is guaranteed to be unique,
+ %% therefor we use erlang:now() instead of os:timestamp()
+ unique_table_name(Pre, erlang:now()).
+
+unique_table_name(Pre, {_A, _B, C} = Now) ->
+ {Date, Time} = calendar:now_to_datetime(Now),
{YYYY, MM, DD} = Date,
{Hour, Min, Sec} = Time,
FormatDate =
io_lib:format("~.4w~.2.0w~.2.0w_~.2.0w~.2.0w~.2.0w_~w",
[YYYY, MM, DD, Hour, Min, Sec, round(C/1000)]),
- unique_name2(Pre, FormatDate).
+ unique_table_name2(Pre, FormatDate).
-unique_name2(Pre, FormatedDate) ->
- PidPart = unique_pid(),
+unique_table_name2(Pre, FormatedDate) ->
+ PidPart = unique_table_name_pid(),
lists:flatten(io_lib:format("~s.~s~s.tmp", [Pre, PidPart, FormatedDate])).
-unique_pid() ->
+unique_table_name_pid() ->
case string:tokens(pid_to_list(self()), [$<,$.,$>]) of
[A, B, C] ->
A ++ B ++ C ++ ".";
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-11 19:23:24 +0000