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-rw-r--r--lib/snmp/src/agent/depend.mk2
-rw-r--r--lib/snmp/src/agent/snmpa_agent.erl423
-rw-r--r--lib/snmp/src/agent/snmpa_internal.hrl11
-rw-r--r--lib/snmp/src/agent/snmpa_supervisor.erl40
4 files changed, 372 insertions, 104 deletions
diff --git a/lib/snmp/src/agent/depend.mk b/lib/snmp/src/agent/depend.mk
index bc39e1fa35..078ef15821 100644
--- a/lib/snmp/src/agent/depend.mk
+++ b/lib/snmp/src/agent/depend.mk
@@ -52,6 +52,7 @@ $(EBIN)/snmpa_acm.$(EMULATOR): \
$(EBIN)/snmpa_agent.$(EMULATOR): \
snmpa_agent.erl \
+ snmpa_internal.hrl \
../misc/snmp_debug.hrl \
../misc/snmp_verbosity.hrl \
../../include/snmp_types.hrl
@@ -136,6 +137,7 @@ $(EBIN)/snmpa_set_lib.$(EMULATOR): \
$(EBIN)/snmpa_supervisor.$(EMULATOR): \
snmpa_supervisor.erl \
+ snmpa_internal.hrl \
../misc/snmp_debug.hrl \
../misc/snmp_verbosity.hrl
diff --git a/lib/snmp/src/agent/snmpa_agent.erl b/lib/snmp/src/agent/snmpa_agent.erl
index 27e463abf8..95199065b3 100644
--- a/lib/snmp/src/agent/snmpa_agent.erl
+++ b/lib/snmp/src/agent/snmpa_agent.erl
@@ -65,7 +65,10 @@
%% Internal exports
-export([init/1, handle_call/3, handle_cast/2, handle_info/2,
terminate/2, code_change/3, tr_var/2, tr_varbind/1,
- handle_pdu/7, worker/2, worker_loop/1, do_send_trap/7]).
+ handle_pdu/8, worker/2, worker_loop/1, do_send_trap/7]).
+%% <BACKWARD-COMPAT>
+-export([handle_pdu/7]).
+%% </BACKWARD-COMPAT>
-ifndef(default_verbosity).
-define(default_verbosity,silence).
@@ -81,7 +84,6 @@
-define(DISCO_TERMINATING_TRIGGER_USERNAME, "").
-
-ifdef(snmp_debug).
-define(GS_START_LINK3(Prio, Parent, Ref, Opts),
gen_server:start_link(?MODULE, [Prio, Parent, Ref, Opts],
@@ -97,13 +99,48 @@
gen_server:start_link({local, Name}, ?MODULE,
[Prio, Parent, Ref, Opts],[])).
-endif.
-
+
+%% Increment this whenever a change is made to the worker interface
+-define(WORKER_INTERFACE_VERSION, 1).
+
+%% -- Utility macros for creating worker commands --
+-define(mk_pdu_wreq(Vsn, Pdu, PduMS, ACMData, Address, GbMaxVBs, Extra),
+ #wrequest{cmd = handle_pdu,
+ info = [{vsn, Vsn},
+ {pdu, Pdu},
+ {pdu_ms, PduMS},
+ {acm_data, ACMData},
+ {addr, Address},
+ {gb_max_vbs, GbMaxVBs},
+ {extra, Extra}]}.
+-define(mk_send_trap_wreq(TrapRec, NotifyName, ContextName,
+ Recv, Vbs, LocalEngineID),
+ #wrequest{cmd = handle_pdu,
+ info = [{trap_rec, TrapRec},
+ {notify_name, NotifyName},
+ {context_name, ContextName},
+ {receiver, Recv},
+ {varbinds, Vbs},
+ {local_engine_id, LocalEngineID}]}.
+-define(mk_terminate_wreq(), #wrequest{cmd = terminate, info = []}).
+-define(mk_verbosity_wreq(V), #wrequest{cmd = verbosity,
+ info = [{verbosity, V}]}).
+
-record(notification_filter, {id, mod, data}).
-record(disco,
{from, rec, sender, target, engine_id,
sec_level, ctx, ivbs, stage, handler, extra}).
+%% This record is used when sending requests to the worker processes
+-record(wrequest,
+ {
+ version = ?WORKER_INTERFACE_VERSION,
+ cmd,
+ info
+ }
+ ).
+
%%-----------------------------------------------------------------
%% The agent is multi-threaded, i.e. each request is handled
@@ -136,7 +173,8 @@
net_if_mod,
backup,
disco,
- mibs_cache_request}).
+ mibs_cache_request,
+ gb_max_vbs}).
%%%-----------------------------------------------------------------
@@ -324,6 +362,8 @@ do_init(Prio, Parent, Ref, Options) ->
MultiT = get_multi_threaded(Options),
Vsns = get_versions(Options),
+ GbMaxVbs = get_gb_max_vbs(Options),
+
NS = start_note_store(Prio, Ref, Options),
{Type, NetIfPid, NetIfMod} =
start_net_if(Parent, Prio, Ref, Vsns, NS, Options),
@@ -342,7 +382,8 @@ do_init(Prio, Parent, Ref, Options) ->
ref = Ref,
vsns = Vsns,
note_store = NS,
- net_if_mod = NetIfMod}}.
+ net_if_mod = NetIfMod,
+ gb_max_vbs = GbMaxVbs}}.
start_note_store(Prio, Ref, Options) ->
@@ -404,7 +445,8 @@ start_net_if(Parent, _Prio, _Ref, _Vsns, _NoteStore, _Options)
start_mib_server(Prio, Ref, Mibs, Options) ->
?vdebug("start_mib_server -> with Prio: ~p", [Prio]),
MibStorage = get_mib_storage(Options),
- MibsOpts = [{mib_storage, MibStorage}|get_option(mib_server, Options, [])],
+ MibsOpts = [{mib_storage, MibStorage} |
+ get_option(mib_server, Options, [])],
?vtrace("start_mib_server -> "
"~n Mibs: ~p"
@@ -734,7 +776,8 @@ handle_info({snmp_pdu, Vsn, Pdu, PduMS, ACMData, Address, Extra}, S) ->
?vdebug("handle_info(snmp_pdu) -> entry with"
"~n Vsn: ~p"
"~n Pdu: ~p"
- "~n Address: ~p", [Vsn, Pdu, Address]),
+ "~n Address: ~p"
+ "~n Extra: ~p", [Vsn, Pdu, Address, Extra]),
NewS = handle_snmp_pdu(is_valid_pdu_type(Pdu#pdu.type),
Vsn, Pdu, PduMS, ACMData, Address, Extra, S),
@@ -1005,7 +1048,7 @@ handle_call({subagent_get_next, MibView, Varbinds, PduData}, _From, S) ->
"~n PduData: ~p",
[MibView,Varbinds,PduData]),
put_pdu_data(PduData),
- {reply, do_get_next(MibView, Varbinds), S};
+ {reply, do_get_next(MibView, Varbinds, infinity), S};
handle_call({subagent_set, Arguments, PduData}, _From, S) ->
?vlog("[handle_call] subagent set:"
"~n Arguments: ~p"
@@ -1046,7 +1089,7 @@ handle_call({get_next, Vars, Context}, _From, S) ->
?vdebug("Varbinds: ~p",[Varbinds]),
MibView = snmpa_acm:get_root_mib_view(),
Reply =
- case do_get_next(MibView, Varbinds) of
+ case do_get_next(MibView, Varbinds, infinity) of
{noError, 0, NewVarbinds} ->
Vbs = lists:keysort(#varbind.org_index, NewVarbinds),
[{Oid,Val} || #varbind{oid = Oid, value = Val} <- Vbs];
@@ -1242,15 +1285,15 @@ handle_call(Req, _From, S) ->
Reply = {error, {unknown, Req}},
{reply, Reply, S}.
-handle_cast({verbosity,Verbosity}, S) ->
- ?vlog("verbosity: ~p -> ~p",[get(verbosity),Verbosity]),
+handle_cast({verbosity, Verbosity}, S) ->
+ ?vlog("verbosity: ~p -> ~p",[get(verbosity), Verbosity]),
put(verbosity,snmp_verbosity:validate(Verbosity)),
case S#state.worker of
- Pid when is_pid(Pid) -> Pid ! {verbosity,Verbosity};
+ Pid when is_pid(Pid) -> Pid ! ?mk_verbosity_wreq(Verbosity);
_ -> ok
end,
case S#state.set_worker of
- Pid2 when is_pid(Pid2) -> Pid2 ! {verbosity,Verbosity};
+ Pid2 when is_pid(Pid2) -> Pid2 ! ?mk_verbosity_wreq(Verbosity);
_ -> ok
end,
{noreply, S};
@@ -1337,13 +1380,80 @@ handle_mibs_cache_request(MibServer, Req) ->
%% Downgrade
%%
-%% code_change({down, _Vsn}, S, downgrade_to_pre_4_13) ->
-%% {ok, S2};
+code_change({down, _Vsn}, S1, downgrade_to_pre_4_17_3) ->
+ #state{type = Type,
+ parent = Parent,
+ worker = Worker,
+ worker_state = WorkerState,
+ set_worker = SetWorker,
+ multi_threaded = MT,
+ ref = Ref,
+ vsns = Vsns,
+ nfilters = NF,
+ note_store = NoteStore,
+ mib_server = MS,
+ net_if = NetIf,
+ net_if_mod = NetIfMod,
+ backup = Backup,
+ disco = Disco,
+ mibs_cache_request = MCR} = S1,
+ S2 = {state,
+ type = Type,
+ parent = Parent,
+ worker = Worker,
+ worker_state = WorkerState,
+ set_worker = SetWorker,
+ multi_threaded = MT,
+ ref = Ref,
+ vsns = Vsns,
+ nfilters = NF,
+ note_store = NoteStore,
+ mib_server = MS,
+ net_if = NetIf,
+ net_if_mod = NetIfMod,
+ backup = Backup,
+ disco = Disco,
+ mibs_cache_request = MCR},
+ {ok, S2};
%% Upgrade
%%
-%% code_change(_Vsn, S, upgrade_from_pre_4_13) ->
-%% {ok, S2};
+code_change(_Vsn, S1, upgrade_from_pre_4_17_3) ->
+ {state,
+ type = Type,
+ parent = Parent,
+ worker = Worker,
+ worker_state = WorkerState,
+ set_worker = SetWorker,
+ multi_threaded = MT,
+ ref = Ref,
+ vsns = Vsns,
+ nfilters = NF,
+ note_store = NoteStore,
+ mib_server = MS,
+ net_if = NetIf,
+ net_if_mod = NetIfMod,
+ backup = Backup,
+ disco = Disco,
+ mibs_cache_request = MCR} = S1,
+ S2 = #state{type = Type,
+ parent = Parent,
+ worker = Worker,
+ worker_state = WorkerState,
+ set_worker = SetWorker,
+ multi_threaded = MT,
+ ref = Ref,
+ vsns = Vsns,
+ nfilters = NF,
+ note_store = NoteStore,
+ mib_server = MS,
+ net_if = NetIf,
+ net_if_mod = NetIfMod,
+ backup = Backup,
+ disco = Disco,
+ mibs_cache_request = MCR,
+ gb_max_vbs = ?DEFAULT_GB_MAX_VBS},
+ {ok, S2};
code_change(_Vsn, S, _Extra) ->
{ok, S}.
@@ -1383,7 +1493,7 @@ worker_start(Dict) ->
%% worker_stop(Pid, infinity).
worker_stop(Pid, Timeout) when is_pid(Pid) ->
- Pid ! terminate,
+ Pid ! ?mk_terminate_wreq(),
receive
{'EXIT', Pid, normal} ->
ok
@@ -1517,9 +1627,11 @@ invalidate_ca_cache() ->
%%
%%-----------------------------------------------------------------
-spawn_thread(Vsn, Pdu, PduMS, ACMData, Address, Extra) ->
+%% This functions spawns a temporary worker process,
+%% that evaluates one request and then silently exits.
+spawn_thread(Vsn, Pdu, PduMS, ACMData, Address, GbMaxVBs, Extra) ->
Dict = get(),
- Args = [Vsn, Pdu, PduMS, ACMData, Address, Extra, Dict],
+ Args = [Vsn, Pdu, PduMS, ACMData, Address, GbMaxVBs, Extra, Dict],
proc_lib:spawn_link(?MODULE, handle_pdu, Args).
spawn_trap_thread(TrapRec, NotifyName, ContextName, Recv, Vbs,
@@ -1532,7 +1644,7 @@ spawn_trap_thread(TrapRec, NotifyName, ContextName, Recv, Vbs,
do_send_trap(TrapRec, NotifyName, ContextName, Recv, Vbs,
LocalEngineID, Dict) ->
lists:foreach(fun({Key, Val}) -> put(Key, Val) end, Dict),
- put(sname,trap_sender_short_name(get(sname))),
+ put(sname, trap_sender_short_name(get(sname))),
?vlog("starting",[]),
snmpa_trap:send_trap(TrapRec, NotifyName, ContextName, Recv, Vbs,
LocalEngineID, get(net_if)).
@@ -1545,9 +1657,56 @@ worker(Master, Dict) ->
worker_loop(Master) ->
receive
+ #wrequest{cmd = handle_pdu,
+ info = Info} ->
+ ?vtrace("worker_loop -> received handle_pdu request", []),
+ Vsn = proplists:get_value(vsn, Info),
+ Pdu = proplists:get_value(pdu, Info),
+ PduMS = proplists:get_value(pdu_ms, Info),
+ ACMData = proplists:get_value(acm_data, Info),
+ Address = proplists:get_value(addr, Info),
+ GbMaxVBs = proplists:get_value(gb_max_vbs, Info),
+ Extra = proplists:get_value(extra, Info),
+ handle_pdu2(Vsn, Pdu, PduMS, ACMData, Address, GbMaxVBs, Extra),
+ ok;
+
+
+ #wrequest{cmd = send_trap,
+ info = Info} ->
+ ?vtrace("worker_loop -> send trap", []),
+ TrapRec = proplists:get_value(trap_rec, Info),
+ NotifyName = proplists:get_value(notify_name, Info),
+ ContextName = proplists:get_value(context_name, Info),
+ Recv = proplists:get_value(receiver, Info),
+ Vbs = proplists:get_value(vbs, Info),
+ LocalEngineID = proplists:get_value(local_engine_id, Info),
+ snmpa_trap:send_trap(TrapRec, NotifyName,
+ ContextName, Recv, Vbs, LocalEngineID,
+ get(net_if)),
+ ok;
+
+
+ #wrequest{cmd = verbosity,
+ info = Info} ->
+ Verbosity = proplists:get_value(verbosity, Info),
+ put(verbosity, snmp_verbosity:validate(Verbosity)),
+ ok;
+
+
+ #wrequest{cmd = terminate} ->
+ exit(normal);
+
+
+ %% *************************************************************
+ %%
+ %% Kept for backward compatibillity reasons
+ %%
+ %% *************************************************************
+
{Vsn, Pdu, PduMS, ACMData, Address, Extra} ->
?vtrace("worker_loop -> received request", []),
- handle_pdu(Vsn, Pdu, PduMS, ACMData, Address, Extra),
+ handle_pdu2(Vsn, Pdu, PduMS, ACMData, Address,
+ ?DEFAULT_GB_MAX_VBS, Extra),
Master ! worker_available;
%% We don't trap exits!
@@ -1590,42 +1749,53 @@ worker_loop(Master) ->
%%-----------------------------------------------------------------
handle_snmp_pdu(true, Vsn, Pdu, PduMS, ACMData, Address, Extra,
- #state{multi_threaded = false} = S) ->
+ #state{multi_threaded = false,
+ gb_max_vbs = GbMaxVBs} = S) ->
?vtrace("handle_snmp_pdu -> single-thread agent",[]),
- handle_pdu(Vsn, Pdu, PduMS, ACMData, Address, Extra),
+ handle_pdu2(Vsn, Pdu, PduMS, ACMData, Address, GbMaxVBs, Extra),
S;
handle_snmp_pdu(true, Vsn, #pdu{type = 'set-request'} = Pdu, PduMS,
ACMData, Address, Extra,
- #state{set_worker = Worker} = S) ->
+ #state{set_worker = Worker,
+ gb_max_vbs = GbMaxVBs} = S) ->
?vtrace("handle_snmp_pdu -> multi-thread agent: "
"send set-request to main worker",[]),
- Worker ! {Vsn, Pdu, PduMS, ACMData, Address, Extra},
+ WRequest = ?mk_pdu_wreq(Vsn, Pdu, PduMS, ACMData, Address, GbMaxVBs, Extra),
+ Worker ! WRequest,
S#state{worker_state = busy};
handle_snmp_pdu(true, Vsn, Pdu, PduMS,
ACMData, Address, Extra,
- #state{worker_state = busy} = S) ->
+ #state{worker_state = busy,
+ gb_max_vbs = GbMaxVBs} = S) ->
?vtrace("handle_snmp_pdu -> multi-thread agent: "
"main worker busy - create new worker",[]),
- spawn_thread(Vsn, Pdu, PduMS, ACMData, Address, Extra),
+ spawn_thread(Vsn, Pdu, PduMS, ACMData, Address, GbMaxVBs, Extra),
S;
handle_snmp_pdu(true, Vsn, Pdu, PduMS, ACMData, Address, Extra,
- #state{worker = Worker} = S) ->
+ #state{worker = Worker,
+ gb_max_vbs = GbMaxVBs} = S) ->
?vtrace("handle_snmp_pdu -> multi-thread agent: "
"send to main worker",[]),
- Worker ! {Vsn, Pdu, PduMS, ACMData, Address, Extra},
+ WRequest = ?mk_pdu_wreq(Vsn, Pdu, PduMS, ACMData, Address, GbMaxVBs, Extra),
+ Worker ! WRequest,
S#state{worker_state = busy};
handle_snmp_pdu(_, _Vsn, _Pdu, _PduMS, _ACMData, _Address, _Extra, S) ->
S.
%% Called via the spawn_thread function
+%% <BACKWARD-COMPAT>
handle_pdu(Vsn, Pdu, PduMS, ACMData, Address, Extra, Dict) ->
+ handle_pdu(Vsn, Pdu, PduMS, ACMData, Address, ?DEFAULT_GB_MAX_VBS, Extra,
+ Dict).
+%% </BACKWARD-COMPAT>
+handle_pdu(Vsn, Pdu, PduMS, ACMData, Address, GbMaxVBs, Extra, Dict) ->
lists:foreach(fun({Key, Val}) -> put(Key, Val) end, Dict),
put(sname, pdu_handler_short_name(get(sname))),
?vlog("new worker starting",[]),
- handle_pdu(Vsn, Pdu, PduMS, ACMData, Address, Extra).
+ handle_pdu2(Vsn, Pdu, PduMS, ACMData, Address, GbMaxVBs, Extra).
-handle_pdu(Vsn, Pdu, PduMS, ACMData, Address, Extra) ->
+handle_pdu2(Vsn, Pdu, PduMS, ACMData, Address, GbMaxVBs, Extra) ->
%% OTP-3324
AuthMod = get(auth_module),
case AuthMod:init_check_access(Pdu, ACMData) of
@@ -1634,7 +1804,8 @@ handle_pdu(Vsn, Pdu, PduMS, ACMData, Address, Extra) ->
"~n MibView: ~p"
"~n ContextName: ~p", [MibView, ContextName]),
AgentData = cheat(ACMData, Address, ContextName),
- do_handle_pdu(MibView, Vsn, Pdu, PduMS, ACMData, AgentData, Extra);
+ do_handle_pdu(MibView, Vsn, Pdu, PduMS, ACMData, AgentData,
+ GbMaxVBs, Extra);
{error, Reason} ->
?vlog("handle_pdu -> error:"
"~n Reason: ~p", [Reason]),
@@ -1648,16 +1819,19 @@ handle_pdu(Vsn, Pdu, PduMS, ACMData, Address, Extra) ->
end.
do_handle_pdu(MibView, Vsn, Pdu, PduMS,
- ACMData, {Community, Address, ContextName}, Extra) ->
+ ACMData, {Community, Address, ContextName},
+ GbMaxVBs, Extra) ->
put(net_if_data, Extra),
+
RePdu = process_msg(MibView, Vsn, Pdu, PduMS, Community,
- Address, ContextName),
+ Address, ContextName, GbMaxVBs),
?vtrace("do_handle_pdu -> processed:"
"~n RePdu: ~p", [RePdu]),
- get(net_if) ! {snmp_response, Vsn, RePdu,
- RePdu#pdu.type, ACMData, Address, Extra}.
+ NetIf = get(net_if),
+ NetIf ! {snmp_response, Vsn, RePdu,
+ RePdu#pdu.type, ACMData, Address, Extra}.
handle_acm_error(Vsn, Reason, Pdu, ACMData, Address, Extra) ->
@@ -1831,9 +2005,9 @@ do_handle_send_trap(S, TrapRec, NotifyName, ContextName, Recv, Varbinds,
master_agent ->
%% Send to main worker
?vtrace("do_handle_send_trap -> send to main worker",[]),
- S#state.worker ! {send_trap,
- TrapRec, NotifyName, ContextName, Recv, Vbs,
- LocalEngineID},
+ S#state.worker ! ?mk_send_trap_wreq(TrapRec, NotifyName,
+ ContextName, Recv, Vbs,
+ LocalEngineID),
{ok, S#state{worker_state = busy}}
end.
@@ -2170,17 +2344,18 @@ handle_mib_of(MibServer, Oid) ->
%% Func: process_msg/7
%% Returns: RePdu
%%-----------------------------------------------------------------
-process_msg(MibView, Vsn, Pdu, PduMS, Community, {Ip, Udp}, ContextName) ->
+process_msg(MibView, Vsn, Pdu, PduMS, Community, {Ip, Udp}, ContextName,
+ GbMaxVBs) ->
#pdu{request_id = ReqId} = Pdu,
put(snmp_address, {tuple_to_list(Ip), Udp}),
put(snmp_request_id, ReqId),
put(snmp_community, Community),
put(snmp_context, ContextName),
?vtrace("process ~p",[Pdu#pdu.type]),
- process_pdu(Pdu, PduMS, Vsn, MibView).
+ process_pdu(Pdu, PduMS, Vsn, MibView, GbMaxVBs).
process_pdu(#pdu{type='get-request', request_id = ReqId, varbinds=Vbs},
- _PduMS, Vsn, MibView) ->
+ _PduMS, Vsn, MibView, _GbMaxVBs) ->
?vtrace("get ~p",[ReqId]),
Res = get_err(do_get(MibView, Vbs, false)),
?vtrace("get result: "
@@ -2201,12 +2376,12 @@ process_pdu(#pdu{type='get-request', request_id = ReqId, varbinds=Vbs},
make_response_pdu(ReqId, ErrStatus, ErrIndex, Vbs, ResponseVarbinds);
process_pdu(#pdu{type = 'get-next-request', request_id = ReqId, varbinds = Vbs},
- _PduMS, Vsn, MibView) ->
+ _PduMS, Vsn, MibView, _GbMaxVBs) ->
?vtrace("process get-next-request -> entry with"
"~n ReqId: ~p"
"~n Vbs: ~p"
"~n MibView: ~p",[ReqId, Vbs, MibView]),
- Res = get_err(do_get_next(MibView, Vbs)),
+ Res = get_err(do_get_next(MibView, Vbs, infinity)),
?vtrace("get-next result: "
"~n ~p",[Res]),
{ErrStatus, ErrIndex, ResVarbinds} =
@@ -2223,11 +2398,15 @@ process_pdu(#pdu{type = 'get-next-request', request_id = ReqId, varbinds = Vbs},
"~n ~p",[ResponseVarbinds]),
make_response_pdu(ReqId, ErrStatus, ErrIndex, Vbs, ResponseVarbinds);
-process_pdu(#pdu{type = 'get-bulk-request',request_id = ReqId,varbinds = Vbs,
- error_status = NonRepeaters, error_index = MaxRepetitions},
- PduMS, _Vsn, MibView)->
+process_pdu(#pdu{type = 'get-bulk-request',
+ request_id = ReqId,
+ varbinds = Vbs,
+ error_status = NonRepeaters,
+ error_index = MaxRepetitions},
+ PduMS, _Vsn, MibView, GbMaxVBs) ->
{ErrStatus, ErrIndex, ResponseVarbinds} =
- get_err(do_get_bulk(MibView,NonRepeaters,MaxRepetitions,PduMS,Vbs)),
+ get_err(do_get_bulk(MibView, NonRepeaters, MaxRepetitions, PduMS, Vbs,
+ GbMaxVBs)),
?vtrace("get-bulk final result: "
"~n Error status: ~p"
"~n Error index: ~p"
@@ -2236,7 +2415,7 @@ process_pdu(#pdu{type = 'get-bulk-request',request_id = ReqId,varbinds = Vbs,
make_response_pdu(ReqId, ErrStatus, ErrIndex, Vbs, ResponseVarbinds);
process_pdu(#pdu{type = 'set-request', request_id = ReqId, varbinds = Vbs},
- _PduMS, Vsn, MibView)->
+ _PduMS, Vsn, MibView, _GbMaxVbs)->
Res = do_set(MibView, Vbs),
?vtrace("set result: "
"~n ~p",[Res]),
@@ -2293,7 +2472,8 @@ validate_next_v1_2([Vb | _Vbs], _MibView, _Res)
{noSuchName, Vb#varbind.org_index};
validate_next_v1_2([Vb | Vbs], MibView, Res)
when Vb#varbind.variabletype =:= 'Counter64' ->
- case validate_next_v1(do_get_next(MibView, [mk_next_oid(Vb)]), MibView) of
+ case validate_next_v1(
+ do_get_next(MibView, [mk_next_oid(Vb)], infinity), MibView) of
{noError, 0, [NVb]} ->
validate_next_v1_2(Vbs, MibView, [NVb | Res]);
{Error, Index, _OrgVb} ->
@@ -2766,20 +2946,31 @@ validate_tab_res(_TooMany, [], Mfa, _Res, I) ->
%% that this really matters, since many nexts across the same
%% subagent must be considered to be very rare.
%%-----------------------------------------------------------------
-do_get_next(MibView, UnsortedVarbinds) ->
+
+%% It may be a bit agressive to check this already,
+%% but since it is a security measure, it makes sense.
+do_get_next(_MibView, UnsortedVarbinds, GbMaxVBs)
+ when (is_integer(GbMaxVBs) andalso (length(UnsortedVarbinds) > GbMaxVBs)) ->
+ {tooBig, 0, []}; % What is the correct index in this case?
+do_get_next(MibView, UnsortedVBs, GbMaxVBs) ->
?vt("do_get_next -> entry when"
"~n MibView: ~p"
- "~n UnsortedVarbinds: ~p", [MibView, UnsortedVarbinds]),
- SortedVarbinds = oid_sort_varbindlist(UnsortedVarbinds),
+ "~n UnsortedVBs: ~p", [MibView, UnsortedVBs]),
+ SortedVBs = oid_sort_vbs(UnsortedVBs),
?vt("do_get_next -> "
- "~n SortedVarbinds: ~p", [SortedVarbinds]),
- next_loop_varbinds([], SortedVarbinds, MibView, [], []).
+ "~n SortedVBs: ~p", [SortedVBs]),
+ next_loop_varbinds([], SortedVBs, MibView, [], [], GbMaxVBs).
-oid_sort_varbindlist(Vbs) ->
+oid_sort_vbs(Vbs) ->
lists:keysort(#varbind.oid, Vbs).
+next_loop_varbinds(_, Vbs, _MibView, Res, _LAVb, GbMaxVBs)
+ when (is_integer(GbMaxVBs) andalso
+ ((length(Vbs) + length(Res)) > GbMaxVBs)) ->
+ {tooBig, 0, []}; % What is the correct index in this case?
+
%% LAVb is Last Accessible Vb
-next_loop_varbinds([], [Vb | Vbs], MibView, Res, LAVb) ->
+next_loop_varbinds([], [Vb | Vbs], MibView, Res, LAVb, GbMaxVBs) ->
?vt("next_loop_varbinds -> entry when"
"~n Vb: ~p"
"~n MibView: ~p", [Vb, MibView]),
@@ -2790,7 +2981,7 @@ next_loop_varbinds([], [Vb | Vbs], MibView, Res, LAVb) ->
true -> LAVb
end,
NewVb = RVb#varbind{variabletype = 'NULL', value = endOfMibView},
- next_loop_varbinds([], Vbs, MibView, [NewVb | Res], []);
+ next_loop_varbinds([], Vbs, MibView, [NewVb | Res], [], GbMaxVBs);
{variable, ME, VarOid} when ((ME#me.access =/= 'not-accessible') andalso
(ME#me.access =/= 'write-only') andalso
@@ -2804,7 +2995,8 @@ next_loop_varbinds([], [Vb | Vbs], MibView, Res, LAVb) ->
%% Try next one
NewVb = Vb#varbind{oid = VarOid,
value = 'NULL'},
- next_loop_varbinds([], [NewVb | Vbs], MibView, Res, []);
+ next_loop_varbinds([], [NewVb | Vbs], MibView, Res, [],
+ GbMaxVBs);
{value, Type, Value} ->
?vt("next_loop_varbind -> value"
"~n Type: ~p"
@@ -2812,7 +3004,8 @@ next_loop_varbinds([], [Vb | Vbs], MibView, Res, LAVb) ->
NewVb = Vb#varbind{oid = VarOid,
variabletype = Type,
value = Value},
- next_loop_varbinds([], Vbs, MibView, [NewVb | Res], []);
+ next_loop_varbinds([], Vbs, MibView, [NewVb | Res], [],
+ GbMaxVBs);
{error, ErrorStatus} ->
?vdebug("next loop varbinds:"
"~n ErrorStatus: ~p",[ErrorStatus]),
@@ -2825,7 +3018,7 @@ next_loop_varbinds([], [Vb | Vbs], MibView, Res, LAVb) ->
true -> LAVb
end,
NewVb = Vb#varbind{oid = VarOid, value = 'NULL'},
- next_loop_varbinds([], [NewVb | Vbs], MibView, Res, RVb);
+ next_loop_varbinds([], [NewVb | Vbs], MibView, Res, RVb, GbMaxVBs);
{table, TableOid, TableRestOid, ME} ->
?vt("next_loop_varbind -> table: "
"~n TableOid: ~p"
@@ -2833,17 +3026,17 @@ next_loop_varbinds([], [Vb | Vbs], MibView, Res, LAVb) ->
"~n ME: ~p", [TableOid, TableRestOid, ME]),
next_loop_varbinds({table, TableOid, ME,
[{tab_oid(TableRestOid), Vb}]},
- Vbs, MibView, Res, []);
+ Vbs, MibView, Res, [], GbMaxVBs);
{subagent, SubAgentPid, SAOid} ->
?vt("next_loop_varbind -> subagent: "
"~n SubAgentPid: ~p"
"~n SAOid: ~p", [SubAgentPid, SAOid]),
NewVb = Vb#varbind{variabletype = 'NULL', value = 'NULL'},
next_loop_varbinds({subagent, SubAgentPid, SAOid, [NewVb]},
- Vbs, MibView, Res, [])
+ Vbs, MibView, Res, [], GbMaxVBs)
end;
next_loop_varbinds({table, TableOid, ME, TabOids},
- [Vb | Vbs], MibView, Res, _LAVb) ->
+ [Vb | Vbs], MibView, Res, _LAVb, GbMaxVBs) ->
?vt("next_loop_varbinds(table) -> entry with"
"~n TableOid: ~p"
"~n Vb: ~p", [TableOid, Vb]),
@@ -2851,13 +3044,14 @@ next_loop_varbinds({table, TableOid, ME, TabOids},
{table, TableOid, TableRestOid, _ME} ->
next_loop_varbinds({table, TableOid, ME,
[{tab_oid(TableRestOid), Vb} | TabOids]},
- Vbs, MibView, Res, []);
+ Vbs, MibView, Res, [], GbMaxVBs);
_ ->
case get_next_table(ME, TableOid, TabOids, MibView) of
{ok, TabRes, TabEndOfTabVbs} ->
NewVbs = lists:append(TabEndOfTabVbs, [Vb | Vbs]),
NewRes = lists:append(TabRes, Res),
- next_loop_varbinds([], NewVbs, MibView, NewRes, []);
+ next_loop_varbinds([], NewVbs, MibView, NewRes, [],
+ GbMaxVBs);
{ErrorStatus, OrgIndex} ->
?vdebug("next loop varbinds: next varbind"
"~n ErrorStatus: ~p"
@@ -2867,7 +3061,7 @@ next_loop_varbinds({table, TableOid, ME, TabOids},
end
end;
next_loop_varbinds({table, TableOid, ME, TabOids},
- [], MibView, Res, _LAVb) ->
+ [], MibView, Res, _LAVb, GbMaxVBs) ->
?vt("next_loop_varbinds(table) -> entry with"
"~n TableOid: ~p", [TableOid]),
case get_next_table(ME, TableOid, TabOids, MibView) of
@@ -2876,7 +3070,8 @@ next_loop_varbinds({table, TableOid, ME, TabOids},
"~n TabRes: ~p"
"~n TabEndOfTabVbs: ~p", [TabRes, TabEndOfTabVbs]),
NewRes = lists:append(TabRes, Res),
- next_loop_varbinds([], TabEndOfTabVbs, MibView, NewRes, []);
+ next_loop_varbinds([], TabEndOfTabVbs, MibView, NewRes, [],
+ GbMaxVBs);
{ErrorStatus, OrgIndex} ->
?vdebug("next loop varbinds: next table"
"~n ErrorStatus: ~p"
@@ -2885,7 +3080,7 @@ next_loop_varbinds({table, TableOid, ME, TabOids},
{ErrorStatus, OrgIndex, []}
end;
next_loop_varbinds({subagent, SAPid, SAOid, SAVbs},
- [Vb | Vbs], MibView, Res, _LAVb) ->
+ [Vb | Vbs], MibView, Res, _LAVb, GbMaxVBs) ->
?vt("next_loop_varbinds(subagent) -> entry with"
"~n SAPid: ~p"
"~n SAOid: ~p"
@@ -2894,13 +3089,14 @@ next_loop_varbinds({subagent, SAPid, SAOid, SAVbs},
{subagent, _SubAgentPid, SAOid} ->
next_loop_varbinds({subagent, SAPid, SAOid,
[Vb | SAVbs]},
- Vbs, MibView, Res, []);
+ Vbs, MibView, Res, [], GbMaxVBs);
_ ->
case get_next_sa(SAPid, SAOid, SAVbs, MibView) of
{ok, SARes, SAEndOfMibViewVbs} ->
NewVbs = lists:append(SAEndOfMibViewVbs, [Vb | Vbs]),
NewRes = lists:append(SARes, Res),
- next_loop_varbinds([], NewVbs, MibView, NewRes, []);
+ next_loop_varbinds([], NewVbs, MibView, NewRes, [],
+ GbMaxVBs);
{noSuchName, OrgIndex} ->
%% v1 reply, treat this Vb as endOfMibView, and try again
%% for the others.
@@ -2913,12 +3109,14 @@ next_loop_varbinds({subagent, SAPid, SAOid, SAVbs},
case lists:delete(EVb, SAVbs) of
[] ->
next_loop_varbinds([], [EndOfVb, Vb | Vbs],
- MibView, Res, []);
+ MibView, Res, [],
+ GbMaxVBs);
TryAgainVbs ->
next_loop_varbinds({subagent, SAPid, SAOid,
TryAgainVbs},
[EndOfVb, Vb | Vbs],
- MibView, Res, [])
+ MibView, Res, [],
+ GbMaxVBs)
end;
false ->
%% bad index from subagent
@@ -2934,14 +3132,15 @@ next_loop_varbinds({subagent, SAPid, SAOid, SAVbs},
end
end;
next_loop_varbinds({subagent, SAPid, SAOid, SAVbs},
- [], MibView, Res, _LAVb) ->
+ [], MibView, Res, _LAVb, GbMaxVBs) ->
?vt("next_loop_varbinds(subagent) -> entry with"
"~n SAPid: ~p"
"~n SAOid: ~p", [SAPid, SAOid]),
case get_next_sa(SAPid, SAOid, SAVbs, MibView) of
{ok, SARes, SAEndOfMibViewVbs} ->
NewRes = lists:append(SARes, Res),
- next_loop_varbinds([], SAEndOfMibViewVbs, MibView, NewRes, []);
+ next_loop_varbinds([], SAEndOfMibViewVbs, MibView, NewRes, [],
+ GbMaxVBs);
{noSuchName, OrgIndex} ->
%% v1 reply, treat this Vb as endOfMibView, and try again for
%% the others.
@@ -2952,11 +3151,13 @@ next_loop_varbinds({subagent, SAPid, SAOid, SAVbs},
value = {endOfMibView, NextOid}},
case lists:delete(EVb, SAVbs) of
[] ->
- next_loop_varbinds([], [EndOfVb], MibView, Res, []);
+ next_loop_varbinds([], [EndOfVb], MibView, Res, [],
+ GbMaxVBs);
TryAgainVbs ->
next_loop_varbinds({subagent, SAPid, SAOid,
TryAgainVbs},
- [EndOfVb], MibView, Res, [])
+ [EndOfVb], MibView, Res, [],
+ GbMaxVBs)
end;
false ->
%% bad index from subagent
@@ -2969,7 +3170,7 @@ next_loop_varbinds({subagent, SAPid, SAOid, SAVbs},
[ErrorStatus,OrgIndex]),
{ErrorStatus, OrgIndex, []}
end;
-next_loop_varbinds([], [], _MibView, Res, _LAVb) ->
+next_loop_varbinds([], [], _MibView, Res, _LAVb, _GbMaxVBs) ->
?vt("next_loop_varbinds -> entry when done", []),
{noError, 0, Res}.
@@ -3235,21 +3436,29 @@ next_oid(Oid) ->
%%%-----------------------------------------------------------------
%%% 5. GET-BULK REQUEST
+%%%
+%%% In order to prevent excesses in reply sizes there are two
+%%% preventive methods in place. One is to check that the encode
+%%% size does not exceed Max PDU size (this is mentioned in the
+%%% standard). The other is a simple VBs limit. That is, the
+%%% resulting response cannot contain more then this number of VBs.
%%%-----------------------------------------------------------------
-do_get_bulk(MibView, NonRepeaters, MaxRepetitions, PduMS, Varbinds) ->
+
+do_get_bulk(MibView, NonRepeaters, MaxRepetitions, PduMS, Varbinds, GbMaxVBs) ->
?vtrace("do_get_bulk -> entry with"
"~n MibView: ~p"
"~n NonRepeaters: ~p"
"~n MaxRepetitions: ~p"
"~n PduMS: ~p"
- "~n Varbinds: ~p",
- [MibView, NonRepeaters, MaxRepetitions, PduMS, Varbinds]),
+ "~n Varbinds: ~p"
+ "~n GbMaxVBs: ~p",
+ [MibView, NonRepeaters, MaxRepetitions, PduMS, Varbinds, GbMaxVBs]),
{NonRepVbs, RestVbs} = split_vbs(NonRepeaters, Varbinds, []),
?vt("do_get_bulk -> split: "
"~n NonRepVbs: ~p"
"~n RestVbs: ~p", [NonRepVbs, RestVbs]),
- case do_get_next(MibView, NonRepVbs) of
- {noError, 0, UResNonRepVbs} ->
+ case do_get_next(MibView, NonRepVbs, GbMaxVBs) of
+ {noError, 0, UResNonRepVbs} ->
?vt("do_get_bulk -> next noError: "
"~n UResNonRepVbs: ~p", [UResNonRepVbs]),
ResNonRepVbs = lists:keysort(#varbind.org_index, UResNonRepVbs),
@@ -3264,7 +3473,8 @@ do_get_bulk(MibView, NonRepeaters, MaxRepetitions, PduMS, Varbinds) ->
"~n SizeLeft: ~p"
"~n Res: ~w", [SizeLeft, Res]),
case (catch do_get_rep(SizeLeft, MibView, MaxRepetitions,
- RestVbs, Res)) of
+ RestVbs, Res,
+ length(UResNonRepVbs), GbMaxVBs)) of
{error, Idx, Reason} ->
user_err("failed encoding varbind ~w:~n~p",
[Idx, Reason]),
@@ -3285,6 +3495,7 @@ do_get_bulk(MibView, NonRepeaters, MaxRepetitions, PduMS, Varbinds) ->
Res when is_list(Res) ->
{noError, 0, conv_res(Res)}
end;
+
{ErrorStatus, Index, _} ->
?vdebug("do get bulk: "
"~n ErrorStatus: ~p"
@@ -3334,11 +3545,12 @@ enc_vbs(SizeLeft, Vbs) ->
end,
lists:foldl(Fun, {SizeLeft, []}, Vbs).
-do_get_rep(Sz, MibView, MaxRepetitions, Varbinds, Res)
+do_get_rep(Sz, MibView, MaxRepetitions, Varbinds, Res, GbNumVBs, GbMaxVBs)
when MaxRepetitions >= 0 ->
- do_get_rep(Sz, MibView, 0, MaxRepetitions, Varbinds, Res);
-do_get_rep(Sz, MibView, _MaxRepetitions, Varbinds, Res) ->
- do_get_rep(Sz, MibView, 0, 0, Varbinds, Res).
+ do_get_rep(Sz, MibView, 0, MaxRepetitions, Varbinds, Res,
+ GbNumVBs, GbMaxVBs);
+do_get_rep(Sz, MibView, _MaxRepetitions, Varbinds, Res, GbNumVBs, GbMaxVBs) ->
+ do_get_rep(Sz, MibView, 0, 0, Varbinds, Res, GbNumVBs, GbMaxVBs).
conv_res(ResVarbinds) ->
conv_res(ResVarbinds, []).
@@ -3347,22 +3559,30 @@ conv_res([VbListOfBytes | T], Bytes) ->
conv_res([], Bytes) ->
Bytes.
-do_get_rep(_Sz, _MibView, Max, Max, _, Res) ->
+%% The only only other value, then a positive integer, is infinity.
+do_get_rep(_Sz, _MibView, Count, Max, _, _Res, GbNumVBs, GbMaxVBs)
+ when (is_integer(GbMaxVBs) andalso (GbNumVBs > GbMaxVBs)) ->
+ ?vinfo("Max Get-BULK VBs limit (~w) exceeded (~w) when:"
+ "~n Count: ~p"
+ "~n Max: ~p", [GbMaxVBs, GbNumVBs, Count, Max]),
+ {tooBig, 0, []};
+do_get_rep(_Sz, _MibView, Max, Max, _, Res, _GbNumVBs, _GbMaxVBs) ->
?vt("do_get_rep -> done when: "
"~n Res: ~p", [Res]),
{noError, 0, conv_res(Res)};
-do_get_rep(Sz, MibView, Count, Max, Varbinds, Res) ->
+do_get_rep(Sz, MibView, Count, Max, Varbinds, Res, GbNumVBs, GbMaxVBs) ->
?vt("do_get_rep -> entry when: "
"~n Sz: ~p"
"~n Count: ~p"
"~n Res: ~w", [Sz, Count, Res]),
- case try_get_bulk(Sz, MibView, Varbinds) of
+ case try_get_bulk(Sz, MibView, Varbinds, GbMaxVBs) of
{noError, NextVarbinds, SizeLeft, Res2} ->
?vt("do_get_rep -> noError: "
"~n SizeLeft: ~p"
"~n Res2: ~p", [SizeLeft, Res2]),
do_get_rep(SizeLeft, MibView, Count+1, Max, NextVarbinds,
- Res2 ++ Res);
+ Res2 ++ Res,
+ GbNumVBs + length(Varbinds), GbMaxVBs);
{endOfMibView, _NextVarbinds, _SizeLeft, Res2} ->
?vt("do_get_rep -> endOfMibView: "
"~n Res2: ~p", [Res2]),
@@ -3374,16 +3594,19 @@ do_get_rep(Sz, MibView, Count, Max, Varbinds, Res) ->
{ErrorStatus, Index, []}
end.
-try_get_bulk(Sz, MibView, Varbinds) ->
+org_index_sort_vbs(Vbs) ->
+ lists:keysort(#varbind.org_index, Vbs).
+
+try_get_bulk(Sz, MibView, Varbinds, GbMaxVBs) ->
?vt("try_get_bulk -> entry with"
"~n Sz: ~w"
"~n MibView: ~w"
"~n Varbinds: ~w", [Sz, MibView, Varbinds]),
- case do_get_next(MibView, Varbinds) of
+ case do_get_next(MibView, Varbinds, GbMaxVBs) of
{noError, 0, UNextVarbinds} ->
?vt("try_get_bulk -> noError: "
"~n UNextVarbinds: ~p", [UNextVarbinds]),
- NextVarbinds = lists:keysort(#varbind.org_index, UNextVarbinds),
+ NextVarbinds = org_index_sort_vbs(UNextVarbinds),
case (catch enc_vbs(Sz, NextVarbinds)) of
{error, Idx, Reason} ->
user_err("failed encoding varbind ~w:~n~p", [Idx, Reason]),
@@ -3547,9 +3770,8 @@ get_err({ErrC, ErrI, Vbs}) ->
{get_err_i(ErrC), ErrI, Vbs}.
get_err_i(noError) -> noError;
-get_err_i(S) ->
- ?vtrace("convert '~p' to 'genErr'",[S]),
- genErr.
+get_err_i(tooBig) -> tooBig; % OTP-9700
+get_err_i(ES) -> ?vtrace("convert ErrorStatus '~p' to 'genErr'", [ES]), genErr.
v2err_to_v1err(noError) -> noError;
v2err_to_v1err(noAccess) -> noSuchName;
@@ -4038,6 +4260,9 @@ get_multi_threaded(Opts) ->
get_versions(Opts) ->
get_option(versions, Opts, [v1,v2,v3]).
+get_gb_max_vbs(Opts) ->
+ get_option(gb_max_vbs, Opts, infinity).
+
get_note_store_opt(Opts) ->
get_option(note_store, Opts, []).
diff --git a/lib/snmp/src/agent/snmpa_internal.hrl b/lib/snmp/src/agent/snmpa_internal.hrl
index 9fa874f119..908bb97bd0 100644
--- a/lib/snmp/src/agent/snmpa_internal.hrl
+++ b/lib/snmp/src/agent/snmpa_internal.hrl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2006-2010. All Rights Reserved.
+%% Copyright Ericsson AB 2006-2011. 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
@@ -24,6 +24,15 @@
-define(DEFAULT_LOCAL_ENGINE_ID, snmp_framework_mib:get_engine_id()).
+%% -- Max number of VBs in a Get-BULK response --
+%% (( The default value, 1000, is *way* more ))
+%% (( then there is room for in a normal pdu ))
+%% (( (unless the max pdu size has been ))
+%% (( cranked way up), so this value should ))
+%% (( suffice as "infinity" withou actually ))
+%% (( causing memory issues for the VM ... ))
+-define(DEFAULT_GB_MAX_VBS, 1000).
+
-define(snmpa_info(F, A), ?snmp_info("agent", F, A)).
-define(snmpa_warning(F, A), ?snmp_warning("agent", F, A)).
-define(snmpa_error(F, A), ?snmp_error("agent", F, A)).
diff --git a/lib/snmp/src/agent/snmpa_supervisor.erl b/lib/snmp/src/agent/snmpa_supervisor.erl
index 5ef5914e18..7a9c214e0d 100644
--- a/lib/snmp/src/agent/snmpa_supervisor.erl
+++ b/lib/snmp/src/agent/snmpa_supervisor.erl
@@ -176,8 +176,8 @@ init([AgentType, Opts]) ->
"~n AgentType: ~p"
"~n Opts: ~p", [AgentType, Opts]),
- put(sname, asup),
- put(verbosity,get_verbosity(Opts)),
+ put(sname, asup),
+ put(verbosity, get_verbosity(Opts)),
?vlog("starting",[]),
@@ -203,7 +203,12 @@ init([AgentType, Opts]) ->
Vsns = get_opt(versions, Opts, [v1,v2,v3]),
?vdebug("[agent table] store versions: ~p",[Vsns]),
ets:insert(snmp_agent_table, {versions, Vsns}),
-
+
+ %% -- Max number of VBs in a Get-BULK response --
+ GbMaxVBs = get_gb_max_vbs(Opts),
+ ?vdebug("[agent table] Get-BULK max VBs: ~p", [GbMaxVBs]),
+ ets:insert(snmp_agent_table, {gb_max_vbs, GbMaxVBs}),
+
%% -- DB-directory --
DbDir = get_opt(db_dir, Opts),
?vdebug("[agent table] store db_dir: ~n ~p",[DbDir]),
@@ -377,7 +382,8 @@ init([AgentType, Opts]) ->
{versions, Vsns},
{net_if, NiOpts},
{mib_server, MibsOpts},
- {note_store, NsOpts}|
+ {note_store, NsOpts},
+ {gb_max_vbs, GbMaxVBs} |
get_opt(master_agent_options, Opts, [])],
AgentSpec =
@@ -542,6 +548,32 @@ get_verbosity(Opts) ->
get_agent_type(Opts) ->
get_opt(agent_type, Opts, master).
+
+%% We validate this option! This should really be done for all
+%% options, but it is beyond the scope of this ticket, OTP-9700.
+
+get_gb_max_vbs(Opts) ->
+ Validate =
+ fun(GbMaxVBs)
+ when ((is_integer(GbMaxVBs) andalso (GbMaxVBs > 0)) orelse
+ (GbMaxVBs =:= infinity)) ->
+ ok;
+ (_) ->
+ error
+ end,
+ get_option(gb_max_vbs, ?DEFAULT_GB_MAX_VBS, Validate, Opts).
+
+get_option(Key, Default, Validate, Opts)
+ when is_list(Opts) andalso is_function(Validate) ->
+ Value = get_opt(Key, Opts, Default),
+ case Validate(Value) of
+ ok ->
+ Value;
+ error ->
+ exit({bad_option, Key, Value})
+ end.
+
+
get_opt(Key, Opts) ->
snmp_misc:get_option(Key, Opts).
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-15 07:54:47 +0000