From d8fa3de932d97db3a93520ac30f60045e8a9cef4 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bj=C3=B6rn=20Gustavsson?= Date: Mon, 26 May 2014 15:15:33 +0200 Subject: Teach code:del_path/1 to ignore superfluous slashes The following sequence will NOT leave the code path unchanged: code:add_path("/some/app/"), . . . code:del_path("/some/app/") The reason is that code:add_path/1 will normalize the path name (removing the trailing slash), while code:del_path/1 does not normalize the path before searching for it in the code path. --- lib/kernel/src/code_server.erl | 2 +- lib/kernel/test/code_SUITE.erl | 14 ++++++++++++-- 2 files changed, 13 insertions(+), 3 deletions(-) diff --git a/lib/kernel/src/code_server.erl b/lib/kernel/src/code_server.erl index fc7ac08699..f891cb61c4 100644 --- a/lib/kernel/src/code_server.erl +++ b/lib/kernel/src/code_server.erl @@ -988,7 +988,7 @@ try_archive_subdirs(_Archive, Base, []) -> %% the complete directory name. %% del_path(Name0,Path,NameDb) -> - case catch to_list(Name0)of + case catch filename:join([to_list(Name0)]) of {'EXIT',_} -> {{error,bad_name},Path}; Name -> diff --git a/lib/kernel/test/code_SUITE.erl b/lib/kernel/test/code_SUITE.erl index 42b81d16b3..f2ddcd57ff 100644 --- a/lib/kernel/test/code_SUITE.erl +++ b/lib/kernel/test/code_SUITE.erl @@ -219,6 +219,13 @@ del_path(suite) -> []; del_path(doc) -> []; del_path(Config) when is_list(Config) -> P = code:get_path(), + try + del_path_1(P) + after + code:set_path(P) + end. + +del_path_1(P) -> test_server:format("Initial code:get_path()=~p~n",[P]), {'EXIT',_} = (catch code:del_path(3)), false = code:del_path(my_dummy_name), @@ -226,19 +233,22 @@ del_path(Config) when is_list(Config) -> Dir = filename:join([code:lib_dir(kernel),"ebin"]), test_server:format("kernel dir: ~p~n",[Dir]), - true = code:del_path(kernel), NewP = code:get_path(), test_server:format("Path after removing 'kernel':~p~n",[NewP]), ReferenceP = lists:delete(Dir,P), test_server:format("Reference path:~p~n",[ReferenceP]), NewP = ReferenceP, % check that dir is deleted + code:set_path(P), + %% An superfluous "/" should also work. + true = code:del_path("kernel/"), + NewP = ReferenceP, % check that dir is deleted code:set_path(P), + true = code:del_path(Dir), NewP1 = code:get_path(), NewP1 = lists:delete(Dir,P), % check that dir is deleted - code:set_path(P), ok. replace_path(suite) -> []; -- cgit v1.2.3 From 32f33d9897261b15573e7e606d990e60e294fc22 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bj=C3=B6rn=20Gustavsson?= Date: Wed, 14 May 2014 12:27:42 +0200 Subject: application_SUITE: Clean up the code after the test is done --- lib/kernel/test/application_SUITE.erl | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) diff --git a/lib/kernel/test/application_SUITE.erl b/lib/kernel/test/application_SUITE.erl index 036e238c85..4901206c8e 100644 --- a/lib/kernel/test/application_SUITE.erl +++ b/lib/kernel/test/application_SUITE.erl @@ -1076,10 +1076,13 @@ otp_1586(Conf) when is_list(Conf) -> {ok, Fd} = file:open(filename:join(Dir, "app5.app"), [write]), w_app5(Fd), file:close(Fd), - code:add_patha(Dir), - ok = application:load(app4()), - ok = application:unload(app4), - ok. + try + true = code:add_patha(Dir), + ok = application:load(app4()), + ok = application:unload(app4) + after + _ = code:del_path(Dir) + end. %%----------------------------------------------------------------- %% Ticket: OTP-2078 -- cgit v1.2.3 From ed06dd12ea74018b902a2c4c7924313d23cedb75 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bj=C3=B6rn=20Gustavsson?= Date: Fri, 9 May 2014 12:35:22 +0200 Subject: Make pre-loaded modules permanently sticky Modules in the kernel, stdlib, and compiler applications are by default "sticky", meaning that the code server will refuse to re-load them. The pre-loaded modules (those that are part of the run-time system itself, such as 'erlang') are, however, not sticky. They used to be sticky a long time ago when the pre-loaded modules were part of the kernel application. Now they are part of the erts application. Since re-loading a pre-loaded module can be catastrophic (especially re-loading the 'erlang' module), the pre-loaded modules must be sticky. Furthermore, it should not be allowed to unstick them. The sticky_dir/1 test case in code_SUITE is never actually run and is broken. Rewrite it. --- lib/kernel/src/code_server.erl | 16 +++++++- lib/kernel/test/code_SUITE.erl | 60 +++++++++++++++------------- lib/kernel/test/code_SUITE_data/calendar.erl | 23 ----------- 3 files changed, 47 insertions(+), 52 deletions(-) delete mode 100644 lib/kernel/test/code_SUITE_data/calendar.erl diff --git a/lib/kernel/src/code_server.erl b/lib/kernel/src/code_server.erl index f891cb61c4..dd06affd70 100644 --- a/lib/kernel/src/code_server.erl +++ b/lib/kernel/src/code_server.erl @@ -63,7 +63,10 @@ init(Ref, Parent, [Root,Mode0]) -> process_flag(trap_exit, true), Db = ets:new(code, [private]), - foreach(fun (M) -> ets:insert(Db, {M,preloaded}) end, erlang:pre_loaded()), + foreach(fun (M) -> + %% Pre-loaded modules are always sticky. + ets:insert(Db, [{M,preloaded},{{sticky,M},true}]) + end, erlang:pre_loaded()), ets:insert(Db, init:fetch_loaded()), Mode = @@ -1165,7 +1168,7 @@ stick_dir(Dir, Stick, St) -> true -> foreach(fun (M) -> ets:insert(Db, {{sticky,M},true}) end, Mods); false -> - foreach(fun (M) -> ets:delete(Db, {sticky,M}) end, Mods) + foreach(fun (M) -> do_unstick_mod(Db, M) end, Mods) end; Error -> Error @@ -1177,6 +1180,15 @@ stick_mod(M, Stick, St) -> true -> ets:insert(Db, {{sticky,M},true}); false -> + do_unstick_mod(Db, M) + end. + +do_unstick_mod(Db, M) -> + case ets:lookup(Db, M) of + [{M,preloaded}] -> + %% Never unstick pre-loaded modules. + true; + _ -> ets:delete(Db, {sticky,M}) end. diff --git a/lib/kernel/test/code_SUITE.erl b/lib/kernel/test/code_SUITE.erl index f2ddcd57ff..afedc17e57 100644 --- a/lib/kernel/test/code_SUITE.erl +++ b/lib/kernel/test/code_SUITE.erl @@ -37,8 +37,7 @@ native_early_modules/1, get_mode/1]). -export([init_per_testcase/2, end_per_testcase/2, - init_per_suite/1, end_per_suite/1, - sticky_compiler/1]). + init_per_suite/1, end_per_suite/1]). %% error_logger -export([init/1, @@ -55,7 +54,7 @@ all() -> delete, purge, purge_many_exits, soft_purge, is_loaded, all_loaded, load_binary, dir_req, object_code, set_path_file, upgrade, - pa_pz_option, add_del_path, dir_disappeared, + sticky_dir, pa_pz_option, add_del_path, dir_disappeared, ext_mod_dep, clash, load_cached, start_node_with_cache, add_and_rehash, where_is_file_no_cache, where_is_file_cached, purge_stacktrace, mult_lib_roots, @@ -587,35 +586,42 @@ sticky_dir(suite) -> []; sticky_dir(doc) -> ["Test that a module with the same name as a module in ", "a sticky directory cannot be loaded."]; sticky_dir(Config) when is_list(Config) -> - MyDir=filename:dirname(code:which(?MODULE)), - {ok, Node}=?t:start_node(sticky_dir, slave,[{args, "-pa \""++MyDir++"\""}]), - File=filename:join([?config(data_dir, Config), "calendar"]), - Ret=rpc:call(Node, ?MODULE, sticky_compiler, [File]), + Pa = filename:dirname(code:which(?MODULE)), + {ok,Node} = ?t:start_node(sticky_dir, slave, [{args,"-pa "++Pa}]), + Mods = [code,lists,erlang,init], + OutDir = filename:join(?config(priv_dir, Config), sticky_dir), + _ = file:make_dir(OutDir), + Ret = rpc:call(Node, erlang, apply, + [fun sticky_compiler/2,[Mods,OutDir]]), case Ret of - fail -> - ?t:fail("c:c allowed a sticky module to be compiled and loaded."); - ok -> + [] -> ok; Other -> - test_server:format("Other: ~p",[Other]) + io:format("~p\n", [Other]), + ?t:fail() end, - ?t:stop_node(Node). + ?t:stop_node(Node), + ok. -sticky_compiler(File) -> - Compiled=File++code:objfile_extension(), - Dir=filename:dirname(File), - code:add_patha(Dir), - file:delete(Compiled), - case c:c(File, [{outdir, Dir}]) of - {ok, Module} -> - case catch Module:test(apa) of - {error, _} -> - fail; - {'EXIT', _} -> - ok - end; - Other -> - test_server:format("c:c(~p) returned: ~p",[File, Other]), +sticky_compiler(Files, PrivDir) -> + code:add_patha(PrivDir), + Rets = [do_sticky_compile(F, PrivDir) || F <- Files], + [R || R <- Rets, R =/= ok]. + +do_sticky_compile(Mod, Dir) -> + %% Make sure that the module is loaded. A module being sticky + %% only prevents it from begin reloaded, not from being loaded + %% from the wrong place to begin with. + Mod = Mod:module_info(module), + File = filename:append(Dir, atom_to_list(Mod)), + Src = io_lib:format("-module(~s).\n" + "-export([test/1]).\n" + "test(me) -> fail.\n", [Mod]), + ok = file:write_file(File++".erl", Src), + case c:c(File, [{outdir,Dir}]) of + {ok,Module} -> + Module:test(me); + {error,sticky_directory} -> ok end. diff --git a/lib/kernel/test/code_SUITE_data/calendar.erl b/lib/kernel/test/code_SUITE_data/calendar.erl deleted file mode 100644 index c1a4a1c12a..0000000000 --- a/lib/kernel/test/code_SUITE_data/calendar.erl +++ /dev/null @@ -1,23 +0,0 @@ -%% -%% %CopyrightBegin% -%% -%% Copyright Ericsson AB 1997-2009. 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 -%% compliance with the License. You should have received a copy of the -%% Erlang Public License along with this software. If not, it can be -%% retrieved online at http://www.erlang.org/. -%% -%% Software distributed under the License is distributed on an "AS IS" -%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See -%% the License for the specific language governing rights and limitations -%% under the License. -%% -%% %CopyrightEnd% -%% --module(calendar). --export([test/1]). - -test(apa) -> - {error, this_function_should_not_be_called}. -- cgit v1.2.3