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// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include <dlfcn.h>
#include "common/assert.h"
#include "common/dynamic_library.h"
#include "common/scope_exit.h"
#include "common/signal_chain.h"
namespace Common {
template <typename T>
T* LookupLibcSymbol(const char* name) {
#if defined(__BIONIC__)
Common::DynamicLibrary provider("libc.so");
if (!provider.IsOpen()) {
UNREACHABLE_MSG("Failed to open libc!");
}
#else
// For other operating environments, we assume the symbol is not overriden.
const char* base = nullptr;
Common::DynamicLibrary provider(base);
#endif
void* sym = provider.GetSymbolAddress(name);
if (sym == nullptr) {
sym = dlsym(RTLD_DEFAULT, name);
}
if (sym == nullptr) {
UNREACHABLE_MSG("Unable to find symbol {}!", name);
}
return reinterpret_cast<T*>(sym);
}
int SigAction(int signum, const struct sigaction* act, struct sigaction* oldact) {
static auto libc_sigaction = LookupLibcSymbol<decltype(sigaction)>("sigaction");
return libc_sigaction(signum, act, oldact);
}
} // namespace Common
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