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-rw-r--r--lib/kernel/src/net_kernel.erl133
1 files changed, 80 insertions, 53 deletions
diff --git a/lib/kernel/src/net_kernel.erl b/lib/kernel/src/net_kernel.erl
index 35a54f591e..ac19f4935b 100644
--- a/lib/kernel/src/net_kernel.erl
+++ b/lib/kernel/src/net_kernel.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1996-2013. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2016. All Rights Reserved.
%%
%% Licensed under the Apache License, Version 2.0 (the "License");
%% you may not use this file except in compliance with the License.
@@ -53,18 +53,25 @@
-define(tckr_dbg(X), ok).
-endif.
-%% User Interface Exports
--export([start/1, start_link/1, stop/0,
- kernel_apply/3,
+%% Documented API functions.
+
+-export([allow/1,
+ connect_node/1,
monitor_nodes/1,
monitor_nodes/2,
+ start/1,
+ stop/0]).
+
+%% Exports for internal use.
+
+-export([start_link/2,
+ kernel_apply/3,
longnames/0,
- allow/1,
protocol_childspecs/0,
epmd_module/0]).
-export([connect/1, disconnect/1, hidden_connect/1, passive_cnct/1]).
--export([connect_node/1, hidden_connect_node/1]). %% explicit connect
+-export([hidden_connect_node/1]). %% explicit connect
-export([set_net_ticktime/1, set_net_ticktime/2, get_net_ticktime/0]).
-export([node_info/1, node_info/2, nodes_info/0,
@@ -73,7 +80,8 @@
-export([publish_on_node/1, update_publish_nodes/1]).
-%% Internal Exports
+%% Internal exports for spawning processes.
+
-export([do_spawn/3,
spawn_func/6,
ticker/2,
@@ -341,18 +349,18 @@ request(Req) ->
start(Args) ->
erl_distribution:start(Args).
-%% This is the main startup routine for net_kernel
-%% The defaults are longnames and a ticktime of 15 secs to the tcp_drv.
+%% This is the main startup routine for net_kernel (only for internal
+%% use by the Kernel application.
-start_link([Name]) ->
- start_link([Name, longnames]);
+start_link([Name], CleanHalt) ->
+ start_link([Name, longnames], CleanHalt);
+start_link([Name, LongOrShortNames], CleanHalt) ->
+ start_link([Name, LongOrShortNames, 15000], CleanHalt);
-start_link([Name, LongOrShortNames]) ->
- start_link([Name, LongOrShortNames, 15000]);
-
-start_link([Name, LongOrShortNames, Ticktime]) ->
- case gen_server:start_link({local, net_kernel}, net_kernel,
- {Name, LongOrShortNames, Ticktime}, []) of
+start_link([Name, LongOrShortNames, Ticktime], CleanHalt) ->
+ Args = {Name, LongOrShortNames, Ticktime, CleanHalt},
+ case gen_server:start_link({local, net_kernel}, ?MODULE,
+ Args, []) of
{ok, Pid} ->
{ok, Pid};
{error, {already_started, Pid}} ->
@@ -361,12 +369,9 @@ start_link([Name, LongOrShortNames, Ticktime]) ->
exit(nodistribution)
end.
-%% auth:get_cookie should only be able to return an atom
-%% tuple cookies are unknowns
-
-init({Name, LongOrShortNames, TickT}) ->
+init({Name, LongOrShortNames, TickT, CleanHalt}) ->
process_flag(trap_exit,true),
- case init_node(Name, LongOrShortNames) of
+ case init_node(Name, LongOrShortNames, CleanHalt) of
{ok, Node, Listeners} ->
process_flag(priority, max),
Ticktime = to_integer(TickT),
@@ -1201,12 +1206,12 @@ get_proto_mod(_Family, _Protocol, []) ->
%% -------- Initialisation functions ------------------------
-init_node(Name, LongOrShortNames) ->
- {NameWithoutHost,_Host} = lists:splitwith(fun($@)->false;(_)->true end,
- atom_to_list(Name)),
+init_node(Name, LongOrShortNames, CleanHalt) ->
+ {NameWithoutHost0,_Host} = split_node(Name),
case create_name(Name, LongOrShortNames, 1) of
{ok,Node} ->
- case start_protos(list_to_atom(NameWithoutHost),Node) of
+ NameWithoutHost = list_to_atom(NameWithoutHost0),
+ case start_protos(NameWithoutHost, Node, CleanHalt) of
{ok, Ls} ->
{ok, Node, Ls};
Error ->
@@ -1240,8 +1245,7 @@ create_name(Name, LongOrShortNames, Try) ->
end.
create_hostpart(Name, LongOrShortNames) ->
- {Head,Host} = lists:splitwith(fun($@)->false;(_)->true end,
- atom_to_list(Name)),
+ {Head,Host} = split_node(Name),
Host1 = case {Host,LongOrShortNames} of
{[$@,_|_],longnames} ->
{ok,Host};
@@ -1268,6 +1272,9 @@ create_hostpart(Name, LongOrShortNames) ->
end,
{Head,Host1}.
+split_node(Name) ->
+ lists:splitwith(fun(C) -> C =/= $@ end, atom_to_list(Name)).
+
%%
%%
%%
@@ -1307,21 +1314,26 @@ epmd_module() ->
%% Start all protocols
%%
-start_protos(Name,Node) ->
+start_protos(Name, Node, CleanHalt) ->
case init:get_argument(proto_dist) of
{ok, [Protos]} ->
- start_protos(Name,Protos, Node);
+ start_protos(Name, Protos, Node, CleanHalt);
_ ->
- start_protos(Name,["inet_tcp"], Node)
+ start_protos(Name, ["inet_tcp"], Node, CleanHalt)
end.
-start_protos(Name,Ps, Node) ->
- case start_protos(Name, Ps, Node, []) of
- [] -> {error, badarg};
- Ls -> {ok, Ls}
+start_protos(Name, Ps, Node, CleanHalt) ->
+ case start_protos(Name, Ps, Node, [], CleanHalt) of
+ [] ->
+ case CleanHalt of
+ true -> halt(1);
+ false -> {error, badarg}
+ end;
+ Ls ->
+ {ok, Ls}
end.
-start_protos(Name, [Proto | Ps], Node, Ls) ->
+start_protos(Name, [Proto | Ps], Node, Ls, CleanHalt) ->
Mod = list_to_atom(Proto ++ "_dist"),
case catch Mod:listen(Name) of
{ok, {Socket, Address, Creation}} ->
@@ -1334,33 +1346,48 @@ start_protos(Name, [Proto | Ps], Node, Ls) ->
address = Address,
accept = AcceptPid,
module = Mod },
- start_protos(Name,Ps, Node, [L|Ls]);
+ start_protos(Name,Ps, Node, [L|Ls], CleanHalt);
_ ->
Mod:close(Socket),
- error_logger:info_msg("Invalid node name: ~p~n", [Node]),
- start_protos(Name, Ps, Node, Ls)
+ S = "invalid node name: " ++ atom_to_list(Node),
+ proto_error(CleanHalt, Proto, S),
+ start_protos(Name, Ps, Node, Ls, CleanHalt)
end;
{'EXIT', {undef,_}} ->
- error_logger:info_msg("Protocol: ~tp: not supported~n", [Proto]),
- start_protos(Name,Ps, Node, Ls);
+ proto_error(CleanHalt, Proto, "not supported"),
+ start_protos(Name, Ps, Node, Ls, CleanHalt);
{'EXIT', Reason} ->
- error_logger:info_msg("Protocol: ~tp: register error: ~tp~n",
- [Proto, Reason]),
- start_protos(Name,Ps, Node, Ls);
+ register_error(CleanHalt, Proto, Reason),
+ start_protos(Name, Ps, Node, Ls, CleanHalt);
{error, duplicate_name} ->
- error_logger:info_msg("Protocol: ~tp: the name " ++
- atom_to_list(Node) ++
- " seems to be in use by another Erlang node",
- [Proto]),
- start_protos(Name,Ps, Node, Ls);
+ S = "the name " ++ atom_to_list(Node) ++
+ " seems to be in use by another Erlang node",
+ proto_error(CleanHalt, Proto, S),
+ start_protos(Name, Ps, Node, Ls, CleanHalt);
{error, Reason} ->
- error_logger:info_msg("Protocol: ~tp: register/listen error: ~tp~n",
- [Proto, Reason]),
- start_protos(Name,Ps, Node, Ls)
+ register_error(CleanHalt, Proto, Reason),
+ start_protos(Name, Ps, Node, Ls, CleanHalt)
end;
-start_protos(_,[], _Node, Ls) ->
+start_protos(_, [], _Node, Ls, _CleanHalt) ->
Ls.
+register_error(false, Proto, Reason) ->
+ S = io_lib:format("register/listen error: ~p", [Reason]),
+ proto_error(false, Proto, lists:flatten(S));
+register_error(true, Proto, Reason) ->
+ S = "Protocol '" ++ Proto ++ "': register/listen error: ",
+ erlang:display_string(S),
+ erlang:display(Reason).
+
+proto_error(CleanHalt, Proto, String) ->
+ S = "Protocol '" ++ Proto ++ "': " ++ String ++ "\n",
+ case CleanHalt of
+ false ->
+ error_logger:info_msg(S);
+ true ->
+ erlang:display_string(S)
+ end.
+
set_node(Node, Creation) when node() =:= nonode@nohost ->
case catch erlang:setnode(Node, Creation) of
true ->
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-01 06:12:52 +0000