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authorSteven Gravell <[email protected]>2010-09-19 18:48:24 +0100
committerSiri Hansen <[email protected]>2011-03-21 15:46:47 +0100
commitc425230a40c85c343538d88fccf278bc4ec569c5 (patch)
tree6229714d8c5ef5ccfbfce62d22a0d968ee53909e /lib/sasl/src/release_handler_1.erl
parentb915bb2da3e5f507439df3ee8e259fb0a9bc424e (diff)
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Remove traces of release_handler reading from filesystem when it has Masters list
There are a couple of places in release_handler and release_handler_1 that assumed it has a disk to read from, which in the case of an erl_prim_loader Loader other than efile is not necessarily true Add check_paths/2 to do the equivalent of check_path/1 for when there is a Masters list Change get_vsn to no longer get sent File paths but instead use the Bin since beam_lib:version being sent a file path causes it to read the local file system Add get_current_vsn/1 as an equivalent to beam_lib:version(code:which(Mod)), but using erl_prim_loader:get_file instead of reading from local file system
Diffstat (limited to 'lib/sasl/src/release_handler_1.erl')
-rw-r--r--lib/sasl/src/release_handler_1.erl44
1 files changed, 31 insertions, 13 deletions
diff --git a/lib/sasl/src/release_handler_1.erl b/lib/sasl/src/release_handler_1.erl
index 9c0edf4e99..8d050fb7b0 100644
--- a/lib/sasl/src/release_handler_1.erl
+++ b/lib/sasl/src/release_handler_1.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1996-2010. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2011. 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
@@ -20,7 +20,7 @@
%% External exports
-export([eval_script/3, eval_script/4, check_script/2]).
--export([get_vsn/1]). %% exported because used in a test case
+-export([get_current_vsn/1]). %% exported because used in a test case
-record(eval_state, {bins = [], stopped = [], suspended = [], apps = [],
libdirs, unpurged = [], vsns = [], newlibs = [],
@@ -223,7 +223,7 @@ eval({load_object_code, {Lib, LibVsn, Modules}}, EvalState) ->
FName = filename:join(Ebin, File),
case erl_prim_loader:get_file(FName) of
{ok, Bin, FName2} ->
- NVsns = add_new_vsn(Mod, FName2, Vsns),
+ NVsns = add_new_vsn(Mod, Bin, Vsns),
{[{Mod, Bin, FName2} | Bins],NVsns};
error ->
throw({error, {no_such_file,FName}})
@@ -609,17 +609,17 @@ sync_nodes(Id, Nodes) ->
add_old_vsn(Mod, Vsns) ->
case lists:keysearch(Mod, 1, Vsns) of
{value, {Mod, undefined, NewVsn}} ->
- OldVsn = get_vsn(code:which(Mod)),
+ OldVsn = get_current_vsn(Mod),
lists:keyreplace(Mod, 1, Vsns, {Mod, OldVsn, NewVsn});
{value, {Mod, _OldVsn, _NewVsn}} ->
Vsns;
false ->
- OldVsn = get_vsn(code:which(Mod)),
+ OldVsn = get_current_vsn(Mod),
[{Mod, OldVsn, undefined} | Vsns]
end.
-add_new_vsn(Mod, File, Vsns) ->
- NewVsn = get_vsn(File),
+add_new_vsn(Mod, Bin, Vsns) ->
+ NewVsn = get_vsn(Bin),
case lists:keysearch(Mod, 1, Vsns) of
{value, {Mod, OldVsn, undefined}} ->
lists:keyreplace(Mod, 1, Vsns, {Mod, OldVsn, NewVsn});
@@ -627,17 +627,35 @@ add_new_vsn(Mod, File, Vsns) ->
[{Mod, undefined, NewVsn} | Vsns]
end.
-
+%%-----------------------------------------------------------------
+%% Func: get_current_vsn/1
+%% Args: Mod = atom()
+%% Purpose: This function returns the equivalent of
+%% beam_lib:version(code:which(Mod)), but it will also handle the
+%% case when using erl_prim_loader loader different from 'efile'.
+%% The reason for not using the Binary from the 'bins' or the
+%% version directly from the 'vsns' state field is that these are
+%% updated already by load_object_code, and this function is called
+%% from load and remove.
+%% Returns: Vsn = term()
+%%-----------------------------------------------------------------
+get_current_vsn(Mod) ->
+ File = code:which(Mod),
+ case erl_prim_loader:get_file(File) of
+ {ok, Bin, _File2} ->
+ get_vsn(Bin);
+ error ->
+ throw({error, {no_such_file, File}})
+ end.
%%-----------------------------------------------------------------
%% Func: get_vsn/1
-%% Args: File = string()
+%% Args: Bin = binary()
%% Purpose: Finds the version attribute of a module.
-%% Returns: Vsn
-%% Vsn = term()
+%% Returns: Vsn = term()
%%-----------------------------------------------------------------
-get_vsn(File) ->
- {ok, {_Mod, Vsn}} = beam_lib:version(File),
+get_vsn(Bin) ->
+ {ok, {_Mod, Vsn}} = beam_lib:version(Bin),
case misc_supp:is_string(Vsn) of
true ->
Vsn;