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/*
* Copyright (C) 2019-2024 Intel Corporation
*
* SPDX-License-Identifier: MIT
*
*/
#include "shared/source/os_interface/linux/os_library_linux.h"
#include "shared/source/helpers/debug_helpers.h"
#include "shared/source/os_interface/linux/sys_calls.h"
#include <dlfcn.h>
#include <link.h>
namespace NEO {
OsLibrary *OsLibrary::loadAndCaptureError(const std::string &name, std::string *errorValue) {
auto ptr = new (std::nothrow) Linux::OsLibrary(name, errorValue);
if (ptr == nullptr)
return nullptr;
if (!ptr->isLoaded()) {
delete ptr;
return nullptr;
}
return ptr;
}
const std::string OsLibrary::createFullSystemPath(const std::string &name) {
return name;
}
namespace Linux {
OsLibrary::OsLibrary(const std::string &name, std::string *errorValue) {
if (name.empty()) {
this->handle = SysCalls::dlopen(0, RTLD_LAZY);
} else {
#ifdef SANITIZER_BUILD
auto dlopenFlag = RTLD_LAZY;
#else
auto dlopenFlag = RTLD_LAZY | RTLD_DEEPBIND;
/* Background: https://github.com/intel/compute-runtime/issues/122 */
#endif
adjustLibraryFlags(dlopenFlag);
this->handle = SysCalls::dlopen(name.c_str(), dlopenFlag);
if (!this->handle && (errorValue != nullptr)) {
errorValue->assign(dlerror());
}
}
}
OsLibrary::~OsLibrary() {
if (this->handle != nullptr) {
dlclose(this->handle);
this->handle = nullptr;
}
}
bool OsLibrary::isLoaded() {
return this->handle != nullptr;
}
void *OsLibrary::getProcAddress(const std::string &procName) {
DEBUG_BREAK_IF(this->handle == nullptr);
return dlsym(this->handle, procName.c_str());
}
std::string OsLibrary::getFullPath() {
struct link_map *map = nullptr;
int retVal = NEO::SysCalls::dlinfo(this->handle, RTLD_DI_LINKMAP, &map);
if (retVal == 0 && map != nullptr) {
return std::string(map->l_name);
}
return std::string();
}
} // namespace Linux
} // namespace NEO
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