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-rw-r--r--erts/emulator/beam/beam_load.c181
-rw-r--r--erts/emulator/test/module_info_SUITE.erl21
-rw-r--r--erts/emulator/test/module_info_SUITE_data/module_info_test.erl24
3 files changed, 106 insertions, 120 deletions
diff --git a/erts/emulator/beam/beam_load.c b/erts/emulator/beam/beam_load.c
index 0d40201934..41ce1659d4 100644
--- a/erts/emulator/beam/beam_load.c
+++ b/erts/emulator/beam/beam_load.c
@@ -525,13 +525,16 @@ static void new_literal_patch(LoaderState* stp, int pos);
static void new_string_patch(LoaderState* stp, int pos);
static Uint new_literal(LoaderState* stp, Eterm** hpp, Uint heap_size);
static int genopargcompare(GenOpArg* a, GenOpArg* b);
-static Eterm exported_from_module(Process* p, Eterm mod);
-static Eterm functions_in_module(Process* p, Eterm mod);
-static Eterm attributes_for_module(Process* p, Eterm mod);
-static Eterm compilation_info_for_module(Process* p, Eterm mod);
-static Eterm md5_of_module(Process* p, Eterm mod);
-static Eterm has_native(Process* p, Eterm mod);
-static Eterm native_addresses(Process* p, Eterm mod);
+static Eterm get_module_info(Process* p, ErtsCodeIndex code_ix,
+ BeamInstr* code, Eterm module, Eterm what);
+static Eterm exported_from_module(Process* p, ErtsCodeIndex code_ix,
+ Eterm mod);
+static Eterm functions_in_module(Process* p, BeamInstr* code);
+static Eterm attributes_for_module(Process* p, BeamInstr* code);
+static Eterm compilation_info_for_module(Process* p, BeamInstr* code);
+static Eterm md5_of_module(Process* p, BeamInstr* code);
+static Eterm has_native(BeamInstr* code);
+static Eterm native_addresses(Process* p, BeamInstr* code);
int patch_funentries(Eterm Patchlist);
int patch(Eterm Addresses, Uint fe);
static int safe_mul(UWord a, UWord b, UWord* resp);
@@ -5389,6 +5392,9 @@ new_literal(LoaderState* stp, Eterm** hpp, Uint heap_size)
Eterm
erts_module_info_0(Process* p, Eterm module)
{
+ Module* modp;
+ ErtsCodeIndex code_ix = erts_active_code_ix();
+ BeamInstr* code;
Eterm *hp;
Eterm list = NIL;
Eterm tup;
@@ -5397,12 +5403,18 @@ erts_module_info_0(Process* p, Eterm module)
return THE_NON_VALUE;
}
- if (erts_get_module(module, erts_active_code_ix()) == NULL) {
+ modp = erts_get_module(module, code_ix);
+ if (modp == NULL) {
return THE_NON_VALUE;
}
+ code = modp->curr.code;
+ if (code == NULL) {
+ return THE_NON_VALUE;
+ }
+
#define BUILD_INFO(What) \
- tup = erts_module_info_1(p, module, What); \
+ tup = get_module_info(p, code_ix, code, module, What); \
hp = HAlloc(p, 5); \
tup = TUPLE2(hp, What, tup); \
hp += 3; \
@@ -5423,22 +5435,47 @@ erts_module_info_0(Process* p, Eterm module)
Eterm
erts_module_info_1(Process* p, Eterm module, Eterm what)
{
+ Module* modp;
+ ErtsCodeIndex code_ix = erts_active_code_ix();
+ BeamInstr* code;
+
+ if (is_not_atom(module)) {
+ return THE_NON_VALUE;
+ }
+
+ modp = erts_get_module(module, code_ix);
+ if (modp == NULL) {
+ return THE_NON_VALUE;
+ }
+
+ code = modp->curr.code;
+ if (code == NULL) {
+ return THE_NON_VALUE;
+ }
+
+ return get_module_info(p, code_ix, code, module, what);
+}
+
+static Eterm
+get_module_info(Process* p, ErtsCodeIndex code_ix, BeamInstr* code,
+ Eterm module, Eterm what)
+{
if (what == am_module) {
return module;
} else if (what == am_md5) {
- return md5_of_module(p, module);
+ return md5_of_module(p, code);
} else if (what == am_exports) {
- return exported_from_module(p, module);
+ return exported_from_module(p, code_ix, module);
} else if (what == am_functions) {
- return functions_in_module(p, module);
+ return functions_in_module(p, code);
} else if (what == am_attributes) {
- return attributes_for_module(p, module);
+ return attributes_for_module(p, code);
} else if (what == am_compile) {
- return compilation_info_for_module(p, module);
+ return compilation_info_for_module(p, code);
} else if (what == am_native_addresses) {
- return native_addresses(p, module);
+ return native_addresses(p, code);
} else if (what == am_native) {
- return has_native(p, module);
+ return has_native(code);
}
return THE_NON_VALUE;
}
@@ -5446,16 +5483,12 @@ erts_module_info_1(Process* p, Eterm module, Eterm what)
/*
* Builds a list of all functions in the given module:
* [{Name, Arity},...]
- *
- * Returns a tagged term, or 0 on error.
*/
Eterm
functions_in_module(Process* p, /* Process whose heap to use. */
- Eterm mod) /* Tagged atom for module. */
+ BeamInstr* code)
{
- Module* modp;
- BeamInstr* code;
int i;
Uint num_functions;
Uint need;
@@ -5463,15 +5496,6 @@ functions_in_module(Process* p, /* Process whose heap to use. */
Eterm* hp_end;
Eterm result = NIL;
- if (is_not_atom(mod)) {
- return THE_NON_VALUE;
- }
-
- modp = erts_get_module(mod, erts_active_code_ix());
- if (modp == NULL) {
- return THE_NON_VALUE;
- }
- code = modp->curr.code;
num_functions = code[MI_NUM_FUNCTIONS];
need = 5*num_functions;
hp = HAlloc(p, need);
@@ -5503,23 +5527,12 @@ functions_in_module(Process* p, /* Process whose heap to use. */
*/
static Eterm
-has_native(Process* p, Eterm mod)
+has_native(BeamInstr *code)
{
Eterm result = am_false;
#ifdef HIPE
- Module* modp;
-
- if (is_not_atom(mod)) {
- return THE_NON_VALUE;
- }
-
- modp = erts_get_module(mod, erts_active_code_ix());
- if (modp == NULL) {
- return THE_NON_VALUE;
- }
-
- if (erts_is_module_native(modp->curr.code)) {
- result = am_true;
+ if (erts_is_module_native(code)) {
+ result = am_true;
}
#endif
return result;
@@ -5548,15 +5561,11 @@ erts_is_module_native(BeamInstr* code)
/*
* Builds a list of all functions including native addresses.
* [{Name,Arity,NativeAddress},...]
- *
- * Returns a tagged term, or 0 on error.
*/
static Eterm
-native_addresses(Process* p, Eterm mod)
+native_addresses(Process* p, BeamInstr* code)
{
- Module* modp;
- BeamInstr* code;
int i;
Eterm* hp;
Uint num_functions;
@@ -5564,16 +5573,6 @@ native_addresses(Process* p, Eterm mod)
Eterm* hp_end;
Eterm result = NIL;
- if (is_not_atom(mod)) {
- return THE_NON_VALUE;
- }
-
- modp = erts_get_module(mod, erts_active_code_ix());
- if (modp == NULL) {
- return THE_NON_VALUE;
- }
-
- code = modp->curr.code;
num_functions = code[MI_NUM_FUNCTIONS];
need = (6+BIG_UINT_HEAP_SIZE)*num_functions;
hp = HAlloc(p, need);
@@ -5600,25 +5599,18 @@ native_addresses(Process* p, Eterm mod)
/*
* Builds a list of all exported functions in the given module:
* [{Name, Arity},...]
- *
- * Returns a tagged term, or 0 on error.
*/
Eterm
exported_from_module(Process* p, /* Process whose heap to use. */
+ ErtsCodeIndex code_ix,
Eterm mod) /* Tagged atom for module. */
{
int i;
Eterm* hp = NULL;
Eterm* hend = NULL;
Eterm result = NIL;
- ErtsCodeIndex code_ix;
-
- if (is_not_atom(mod)) {
- return THE_NON_VALUE;
- }
- code_ix = erts_active_code_ix();
for (i = 0; i < export_list_size(code_ix); i++) {
Export* ep = export_list(i,code_ix);
@@ -5648,31 +5640,17 @@ exported_from_module(Process* p, /* Process whose heap to use. */
/*
* Returns a list of all attributes for the module.
- *
- * Returns a tagged term, or 0 on error.
*/
Eterm
attributes_for_module(Process* p, /* Process whose heap to use. */
- Eterm mod) /* Tagged atom for module. */
-
+ BeamInstr* code)
{
- Module* modp;
- BeamInstr* code;
Eterm* hp;
byte* ext;
Eterm result = NIL;
Eterm* end;
- if (is_not_atom(mod)) {
- return THE_NON_VALUE;
- }
-
- modp = erts_get_module(mod, erts_active_code_ix());
- if (modp == NULL) {
- return THE_NON_VALUE;
- }
- code = modp->curr.code;
ext = (byte *) code[MI_ATTR_PTR];
if (ext != NULL) {
hp = HAlloc(p, code[MI_ATTR_SIZE_ON_HEAP]);
@@ -5688,30 +5666,17 @@ attributes_for_module(Process* p, /* Process whose heap to use. */
/*
* Returns a list containing compilation information.
- *
- * Returns a tagged term, or 0 on error.
*/
Eterm
compilation_info_for_module(Process* p, /* Process whose heap to use. */
- Eterm mod) /* Tagged atom for module. */
+ BeamInstr* code)
{
- Module* modp;
- BeamInstr* code;
Eterm* hp;
byte* ext;
Eterm result = NIL;
Eterm* end;
- if (is_not_atom(mod)) {
- return THE_NON_VALUE;
- }
-
- modp = erts_get_module(mod, erts_active_code_ix());
- if (modp == NULL) {
- return THE_NON_VALUE;
- }
- code = modp->curr.code;
ext = (byte *) code[MI_COMPILE_PTR];
if (ext != NULL) {
hp = HAlloc(p, code[MI_COMPILE_SIZE_ON_HEAP]);
@@ -5727,33 +5692,13 @@ compilation_info_for_module(Process* p, /* Process whose heap to use. */
/*
* Returns the MD5 checksum for a module
- *
- * Returns a tagged term, or 0 on error.
*/
Eterm
md5_of_module(Process* p, /* Process whose heap to use. */
- Eterm mod) /* Tagged atom for module. */
+ BeamInstr* code)
{
- Module* modp;
- BeamInstr* code;
- Eterm res = NIL;
-
- if (is_not_atom(mod)) {
- return THE_NON_VALUE;
- }
-
- modp = erts_get_module(mod, erts_active_code_ix());
- if (modp == NULL) {
- return THE_NON_VALUE;
- }
- code = modp->curr.code;
- if (code[MI_MD5_PTR] != 0) {
- res = new_binary(p, (byte *) code[MI_MD5_PTR], MD5_SIZE);
- } else {
- res = am_undefined;
- }
- return res;
+ return new_binary(p, (byte *) code[MI_MD5_PTR], MD5_SIZE);
}
/*
diff --git a/erts/emulator/test/module_info_SUITE.erl b/erts/emulator/test/module_info_SUITE.erl
index 1125cf3072..362e210d20 100644
--- a/erts/emulator/test/module_info_SUITE.erl
+++ b/erts/emulator/test/module_info_SUITE.erl
@@ -24,7 +24,7 @@
-export([all/0, suite/0,groups/0,init_per_suite/1, end_per_suite/1,
init_per_group/2,end_per_group/2,
init_per_testcase/2,end_per_testcase/2,
- exports/1,functions/1,native/1,info/1]).
+ exports/1,functions/1,deleted/1,native/1,info/1]).
%%-compile(native).
@@ -53,7 +53,7 @@ end_per_group(_GroupName, Config) ->
modules() ->
- [exports, functions, native, info].
+ [exports, functions, deleted, native, info].
init_per_testcase(Func, Config) when is_atom(Func), is_list(Config) ->
Dog = ?t:timetrap(?t:minutes(3)),
@@ -93,6 +93,23 @@ functions(Config) when is_list(Config) ->
?line All = lists:sort(?MODULE:module_info(functions)),
ok.
+%% Test that deleted modules cause badarg
+deleted(Config) when is_list(Config) ->
+ ?line Data = ?config(data_dir, Config),
+ ?line File = filename:join(Data, "module_info_test"),
+ ?line {ok,module_info_test,Code} = compile:file(File, [binary]),
+ ?line {module,module_info_test} = erlang:load_module(module_info_test, Code),
+ ?line 17 = module_info_test:f(),
+ ?line [_|_] = erlang:get_module_info(module_info_test, attributes),
+ ?line [_|_] = erlang:get_module_info(module_info_test),
+ ?line erlang:delete_module(module_info_test),
+ ?line {'EXIT',{undef, _}} = (catch module_info_test:f()),
+ ?line {'EXIT',{badarg, _}} =
+ (catch erlang:get_module_info(module_info_test, attributes)),
+ ?line {'EXIT',{badarg, _}} =
+ (catch erlang:get_module_info(module_info_test)),
+ ok.
+
%% Test that the list of exported functions from this module is correct.
%% Verify that module_info(native) works.
native(Config) when is_list(Config) ->
diff --git a/erts/emulator/test/module_info_SUITE_data/module_info_test.erl b/erts/emulator/test/module_info_SUITE_data/module_info_test.erl
new file mode 100644
index 0000000000..f045f38464
--- /dev/null
+++ b/erts/emulator/test/module_info_SUITE_data/module_info_test.erl
@@ -0,0 +1,24 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2015. 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(module_info_test).
+-export([f/0]).
+
+f() ->
+ 17.
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-01 02:39:14 +0000