8902f7571a
libvndksupport is a new LL-NDK library that provides vendor-visible APIs
for platform-only functionalities of other LL-NDK libraries. Currently,
it provides android_(load|unload)_sphal_library which abstracts the
platform-only APIs of libdl (android_get_exported_namespace, etc.)
Bug: 37323945
Test: sailfish builds and boots
Test: libvndksupport-tests passes
Merged-In: I6d2911b57e009d0c842554933aac87d6573ffcbf
Change-Id: I6d2911b57e009d0c842554933aac87d6573ffcbf
(cherry picked from commit 7130e13262)
50 lines
1.7 KiB
C
50 lines
1.7 KiB
C
/*
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* Copyright (C) 2017 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "linker.h"
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#include <android/dlext.h>
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#include <dlfcn.h>
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#define LOG_TAG "vndksupport"
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#include <log/log.h>
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extern struct android_namespace_t* android_get_exported_namespace(const char*);
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void* android_load_sphal_library(const char* name, int flag) {
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struct android_namespace_t* sphal_namespace = android_get_exported_namespace("sphal");
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if (sphal_namespace != NULL) {
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const android_dlextinfo dlextinfo = {
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.flags = ANDROID_DLEXT_USE_NAMESPACE, .library_namespace = sphal_namespace,
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};
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void* handle = android_dlopen_ext(name, flag, &dlextinfo);
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if (handle) {
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return handle;
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} else {
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ALOGW(
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"Could not load %s from sphal namespace: %s. "
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"Falling back to loading it from the current namespace,",
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name, dlerror());
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}
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} else {
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ALOGI(
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"sphal namespace is not configured for this process. "
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"Loading %s from the current namespace instead.",
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name);
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}
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return dlopen(name, flag);
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}
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int android_unload_sphal_library(void* handle) { return dlclose(handle); }
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