The-Homebrew-Cloud/WiiUPluginLoaderBackend
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Keep track of acquired RPLs and release them on exit

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This commit is contained in:
Maschell 2022-10-05 20:08:49 +02:00
parent ea65654607
commit 0e56538cb1
6 changed files with 71 additions and 15 deletions
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37
source/PluginManagement.cpp
View File

@ -13,8 +13,11 @@
#include <memory>
#include <ranges>
bool PluginManagement::doRelocation(const std::vector<std::unique_ptr<RelocationData>> &relocData, relocation_trampoline_entry_t *tramp_data, uint32_t tramp_length, uint32_t trampolineID) {
std::map<std::string, OSDynLoad_Module> moduleHandleCache;
bool PluginManagement::doRelocation(const std::vector<std::unique_ptr<RelocationData>> &relocData,
relocation_trampoline_entry_t *tramp_data,
uint32_t tramp_length,
uint32_t trampolineID,
std::map<std::string, OSDynLoad_Module> &usedRPls) {
for (auto const &cur : relocData) {
uint32_t functionAddress = 0;
const std::string &functionName = cur->getName();
@ -37,12 +40,22 @@ bool PluginManagement::doRelocation(const std::vector<std::unique_ptr<Relocation
auto rplName = cur->getImportRPLInformation()->getRPLName();
int32_t isData = cur->getImportRPLInformation()->isData();
OSDynLoad_Module rplHandle = nullptr;
if (moduleHandleCache.count(rplName) > 0) {
rplHandle = moduleHandleCache[rplName];
} else {
OSDynLoad_Acquire(rplName.c_str(), &rplHandle);
moduleHandleCache[rplName] = rplHandle;
if (!usedRPls.contains(rplName)) {
DEBUG_FUNCTION_LINE_VERBOSE("Acquire %s", rplName.c_str());
// Always acquire to increase refcount and make sure it won't get unloaded while we're using it.
OSDynLoad_Error err = OSDynLoad_Acquire(rplName.c_str(), &rplHandle);
if (err != OS_DYNLOAD_OK) {
DEBUG_FUNCTION_LINE_ERR("Failed to acquire %s", rplName.c_str());
return false;
}
// Keep track RPLs we are using.
// They will be released on exit
usedRPls[rplName] = rplHandle;
} else {
rplHandle = usedRPls[rplName];
}
OSDynLoad_FindExport(rplHandle, isData, functionName.c_str(), (void **) &functionAddress);
}
@ -74,7 +87,9 @@ bool PluginManagement::doRelocation(const std::vector<std::unique_ptr<Relocation
return true;
}
bool PluginManagement::doRelocations(const std::vector<std::unique_ptr<PluginContainer>> &plugins, relocation_trampoline_entry_t *trampData, uint32_t tramp_size) {
bool PluginManagement::doRelocations(const std::vector<std::unique_ptr<PluginContainer>> &plugins,
relocation_trampoline_entry_t *trampData, uint32_t tramp_size,
std::map<std::string, OSDynLoad_Module> &usedRPls) {
for (uint32_t i = 0; i < tramp_size; i++) {
if (trampData[i].status == RELOC_TRAMP_IMPORT_DONE) {
trampData[i].status = RELOC_TRAMP_FREE;
@ -89,7 +104,11 @@ bool PluginManagement::doRelocations(const std::vector<std::unique_ptr<PluginCon
for (auto &pluginContainer : plugins) {
DEBUG_FUNCTION_LINE_VERBOSE("Doing relocations for plugin: %s", pluginContainer->getMetaInformation()->getName().c_str());
if (!PluginManagement::doRelocation(pluginContainer->getPluginInformation()->getRelocationDataList(), trampData, tramp_size, pluginContainer->getPluginInformation()->getTrampolineId())) {
if (!PluginManagement::doRelocation(pluginContainer->getPluginInformation()->getRelocationDataList(),
trampData,
tramp_size,
pluginContainer->getPluginInformation()->getTrampolineId(),
usedRPls)) {
return false;
}
}

14
source/PluginManagement.h
View File

@ -1,9 +1,10 @@
#pragma once
#include "plugin/PluginContainer.h"
#include <coreinit/dynload.h>
#include <forward_list>
#include <map>
#include <memory>
#include <vector>
#include <wums/defines/relocation_defines.h>
class PluginManagement {
@ -12,9 +13,16 @@ public:
static void callInitHooks(const std::vector<std::unique_ptr<PluginContainer>> &plugins);
static bool doRelocations(const std::vector<std::unique_ptr<PluginContainer>> &plugins, relocation_trampoline_entry_t *trampData, uint32_t tramp_size);
static bool doRelocations(const std::vector<std::unique_ptr<PluginContainer>> &plugins,
relocation_trampoline_entry_t *trampData,
uint32_t tramp_size,
std::map<std::string, OSDynLoad_Module> &usedRPls);
static bool doRelocation(const std::vector<std::unique_ptr<RelocationData>> &relocData, relocation_trampoline_entry_t *tramp_data, uint32_t tramp_length, uint32_t trampolineID);
static bool doRelocation(const std::vector<std::unique_ptr<RelocationData>> &relocData,
relocation_trampoline_entry_t *tramp_data,
uint32_t tramp_length,
uint32_t trampolineID,
std::map<std::string, OSDynLoad_Module> &usedRPls);
static bool DoFunctionPatches(const std::vector<std::unique_ptr<PluginContainer>> &plugins);

2
source/globals.cpp
View File

@ -9,3 +9,5 @@ relocation_trampoline_entry_t *gTrampData __attribute__((section(".data"))) = nu
std::forward_list<std::shared_ptr<PluginData>> gLoadedData __attribute__((section(".data")));
std::forward_list<std::shared_ptr<PluginData>> gLoadOnNextLaunch __attribute__((section(".data")));
std::mutex gLoadedDataMutex __attribute__((section(".data")));
std::map<std::string, OSDynLoad_Module> gUsedRPLs __attribute__((section(".data")));
std::vector<void *> gAllocatedAddresses __attribute__((section(".data")));

3
source/globals.h
View File

@ -2,6 +2,7 @@
#include "plugin/PluginContainer.h"
#include "utils/ConfigUtils.h"
#include "version.h"
#include <coreinit/dynload.h>
#include <forward_list>
#include <memory>
#include <mutex>
@ -21,3 +22,5 @@ extern std::vector<std::unique_ptr<PluginContainer>> gLoadedPlugins;
extern std::forward_list<std::shared_ptr<PluginData>> gLoadedData;
extern std::forward_list<std::shared_ptr<PluginData>> gLoadOnNextLaunch;
extern std::mutex gLoadedDataMutex;
extern std::map<std::string, OSDynLoad_Module> gUsedRPLs;
extern std::vector<void *> gAllocatedAddresses;

18
source/main.cpp
View File

@ -39,6 +39,11 @@ WUMS_APPLICATION_ENDS() {
CallHook(gLoadedPlugins, WUPS_LOADER_HOOK_FINI_WUT_SOCKETS);
CallHook(gLoadedPlugins, WUPS_LOADER_HOOK_FINI_WUT_DEVOPTAB);
for (auto &pair : gUsedRPLs) {
OSDynLoad_Release(pair.second);
}
gUsedRPLs.clear();
deinitLogging();
}
@ -50,6 +55,17 @@ WUMS_APPLICATION_STARTS() {
}
OSReport("Running WiiUPluginLoaderBackend " VERSION_FULL "\n");
gUsedRPLs.clear();
// If an allocated rpl was not released properly (e.g. if something else calls OSDynload_Acquire without releasing it) memory get leaked.
// Let's clean this up!
for (auto &addr : gAllocatedAddresses) {
DEBUG_FUNCTION_LINE_WARN("Memory allocated by OSDynload was not freed properly, let's clean it up! (%08X)", addr);
free((void *) addr);
}
gAllocatedAddresses.clear();
initLogging();
bool initNeeded = false;
@ -93,7 +109,7 @@ WUMS_APPLICATION_STARTS() {
gLoadedData.clear();
if (!gLoadedPlugins.empty()) {
if (!PluginManagement::doRelocations(gLoadedPlugins, gTrampData, TRAMP_DATA_SIZE)) {
if (!PluginManagement::doRelocations(gLoadedPlugins, gTrampData, TRAMP_DATA_SIZE, gUsedRPLs)) {
DEBUG_FUNCTION_LINE_ERR("Relocations failed");
OSFatal("Relocations failed");
}

12
source/utils/utils.cpp
View File

@ -1,8 +1,8 @@
#include "utils.h"
#include "globals.h"
#include "logger.h"
#include <algorithm>
#include <coreinit/ios.h>
#include <cstring>
#include <malloc.h>
#include <string>
std::string getPluginPath() {
@ -69,10 +69,18 @@ OSDynLoad_Error CustomDynLoadAlloc(int32_t size, int32_t align, void **outAddr)
if (!(*outAddr = memalign(align, size))) {
return OS_DYNLOAD_OUT_OF_MEMORY;
}
// keep track of allocated memory to clean it up if RPLs won't get unloaded properly
gAllocatedAddresses.push_back(*outAddr);
return OS_DYNLOAD_OK;
}
void CustomDynLoadFree(void *addr) {
free(addr);
// Remove from list
auto it = std::find(gAllocatedAddresses.begin(), gAllocatedAddresses.end(), addr);
if (it != gAllocatedAddresses.end()) {
gAllocatedAddresses.erase(it);
}
}