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/*
* Copyright 2017 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
//#define LOG_NDEBUG 1
#define LOG_TAG "GraphicsEnv"
#include <graphicsenv/GraphicsEnv.h>
#include <sys/prctl.h>
#include <mutex>
#include <android/dlext.h>
#include <cutils/properties.h>
#include <log/log.h>
// TODO(b/37049319) Get this from a header once one exists
extern "C" {
android_namespace_t* android_get_exported_namespace(const char*);
android_namespace_t* android_create_namespace(const char* name,
const char* ld_library_path,
const char* default_library_path,
uint64_t type,
const char* permitted_when_isolated_path,
android_namespace_t* parent);
enum {
ANDROID_NAMESPACE_TYPE_ISOLATED = 1,
ANDROID_NAMESPACE_TYPE_SHARED = 2,
};
}
namespace android {
/*static*/ GraphicsEnv& GraphicsEnv::getInstance() {
static GraphicsEnv env;
return env;
}
int GraphicsEnv::getCanLoadSystemLibraries() {
if (property_get_bool("ro.debuggable", false) && prctl(PR_GET_DUMPABLE, 0, 0, 0, 0)) {
// Return an integer value since this crosses library boundaries
return 1;
}
return 0;
}
void GraphicsEnv::setDriverPath(const std::string path) {
if (!mDriverPath.empty()) {
ALOGV("ignoring attempt to change driver path from '%s' to '%s'",
mDriverPath.c_str(), path.c_str());
return;
}
ALOGV("setting driver path to '%s'", path.c_str());
mDriverPath = path;
}
void GraphicsEnv::setAngleInfo(const std::string path, const std::string appName,
const std::string appPref, bool developerOptIn,
const int rulesFd, const long rulesOffset,
const long rulesLength) {
if (!mAnglePath.empty()) {
ALOGV("ignoring attempt to change ANGLE path from '%s' to '%s'", mAnglePath.c_str(),
path.c_str());
} else {
ALOGV("setting ANGLE path to '%s'", path.c_str());
mAnglePath = path;
}
if (!mAngleAppName.empty()) {
ALOGV("ignoring attempt to change ANGLE app name from '%s' to '%s'", mAngleAppName.c_str(),
appName.c_str());
} else {
ALOGV("setting ANGLE app name to '%s'", appName.c_str());
mAngleAppName = appName;
}
if (!mAngleAppPref.empty()) {
ALOGV("ignoring attempt to change ANGLE application opt-in from '%s' to '%s'",
mAngleAppPref.c_str(), appPref.c_str());
} else {
ALOGV("setting ANGLE application opt-in to '%s'", appPref.c_str());
mAngleAppPref = appPref;
}
mAngleDeveloperOptIn = developerOptIn;
ALOGV("setting ANGLE rules file descriptor to '%i'", rulesFd);
mAngleRulesFd = rulesFd;
ALOGV("setting ANGLE rules offset to '%li'", rulesOffset);
mAngleRulesOffset = rulesOffset;
ALOGV("setting ANGLE rules length to '%li'", rulesLength);
mAngleRulesLength = rulesLength;
}
void GraphicsEnv::setLayerPaths(NativeLoaderNamespace* appNamespace, const std::string layerPaths) {
if (mLayerPaths.empty()) {
mLayerPaths = layerPaths;
mAppNamespace = appNamespace;
} else {
ALOGV("Vulkan layer search path already set, not clobbering with '%s' for namespace %p'",
layerPaths.c_str(), appNamespace);
}
}
NativeLoaderNamespace* GraphicsEnv::getAppNamespace() {
return mAppNamespace;
}
const char* GraphicsEnv::getAngleAppName() {
if (mAngleAppName.empty()) return nullptr;
return mAngleAppName.c_str();
}
bool GraphicsEnv::getAngleDeveloperOptIn() {
return mAngleDeveloperOptIn;
}
const char* GraphicsEnv::getAngleAppPref() {
if (mAngleAppPref.empty()) return nullptr;
return mAngleAppPref.c_str();
}
int GraphicsEnv::getAngleRulesFd() {
return mAngleRulesFd;
}
long GraphicsEnv::getAngleRulesOffset() {
return mAngleRulesOffset;
}
long GraphicsEnv::getAngleRulesLength() {
return mAngleRulesLength;
}
const std::string GraphicsEnv::getLayerPaths(){
return mLayerPaths;
}
const std::string GraphicsEnv::getDebugLayers() {
return mDebugLayers;
}
void GraphicsEnv::setDebugLayers(const std::string layers) {
mDebugLayers = layers;
}
android_namespace_t* GraphicsEnv::getDriverNamespace() {
static std::once_flag once;
std::call_once(once, [this]() {
if (mDriverPath.empty())
return;
// If the sphal namespace isn't configured for a device, don't support updatable drivers.
// We need a parent namespace to inherit the default search path from.
auto sphalNamespace = android_get_exported_namespace("sphal");
if (!sphalNamespace) return;
mDriverNamespace = android_create_namespace("gfx driver",
mDriverPath.c_str(), // ld_library_path
mDriverPath.c_str(), // default_library_path
ANDROID_NAMESPACE_TYPE_SHARED |
ANDROID_NAMESPACE_TYPE_ISOLATED,
nullptr, // permitted_when_isolated_path
sphalNamespace);
});
return mDriverNamespace;
}
android_namespace_t* GraphicsEnv::getAngleNamespace() {
static std::once_flag once;
std::call_once(once, [this]() {
if (mAnglePath.empty()) return;
mAngleNamespace = android_create_namespace("ANGLE",
nullptr, // ld_library_path
mAnglePath.c_str(), // default_library_path
ANDROID_NAMESPACE_TYPE_SHARED |
ANDROID_NAMESPACE_TYPE_ISOLATED,
nullptr, // permitted_when_isolated_path
nullptr);
if (!mAngleNamespace) ALOGD("Could not create ANGLE namespace from default");
});
return mAngleNamespace;
}
} // namespace android
extern "C" {
android_namespace_t* android_getDriverNamespace() {
return android::GraphicsEnv::getInstance().getDriverNamespace();
}
android_namespace_t* android_getAngleNamespace() {
return android::GraphicsEnv::getInstance().getAngleNamespace();
}
const char* android_getAngleAppName() {
return android::GraphicsEnv::getInstance().getAngleAppName();
}
bool android_getAngleDeveloperOptIn() {
return android::GraphicsEnv::getInstance().getAngleDeveloperOptIn();
}
const char* android_getAngleAppPref() {
return android::GraphicsEnv::getInstance().getAngleAppPref();
}
int android_getAngleRulesFd() {
return android::GraphicsEnv::getInstance().getAngleRulesFd();
}
long android_getAngleRulesOffset() {
return android::GraphicsEnv::getInstance().getAngleRulesOffset();
}
long android_getAngleRulesLength() {
return android::GraphicsEnv::getInstance().getAngleRulesLength();
}
const char* android_getLayerPaths() {
return android::GraphicsEnv::getInstance().getLayerPaths().c_str();
}
const char* android_getDebugLayers() {
return android::GraphicsEnv::getInstance().getDebugLayers().c_str();
}
}
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