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//===-- ObjectFileMinidump.cpp --------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "ObjectFileMinidump.h"
#include "MinidumpFileBuilder.h"
#include "lldb/Core/ModuleSpec.h"
#include "lldb/Core/PluginManager.h"
#include "lldb/Core/Section.h"
#include "lldb/Target/Process.h"
#include "lldb/Utility/LLDBLog.h"
#include "lldb/Utility/Log.h"
#include "llvm/Support/FileSystem.h"
using namespace lldb;
using namespace lldb_private;
LLDB_PLUGIN_DEFINE(ObjectFileMinidump)
void ObjectFileMinidump::Initialize() {
PluginManager::RegisterPlugin(
GetPluginNameStatic(), GetPluginDescriptionStatic(), CreateInstance,
CreateMemoryInstance, GetModuleSpecifications, SaveCore);
}
void ObjectFileMinidump::Terminate() {
PluginManager::UnregisterPlugin(CreateInstance);
}
ObjectFile *ObjectFileMinidump::CreateInstance(
const lldb::ModuleSP &module_sp, lldb::DataBufferSP data_sp,
lldb::offset_t data_offset, const lldb_private::FileSpec *file,
lldb::offset_t offset, lldb::offset_t length) {
return nullptr;
}
ObjectFile *ObjectFileMinidump::CreateMemoryInstance(
const lldb::ModuleSP &module_sp, WritableDataBufferSP data_sp,
const ProcessSP &process_sp, lldb::addr_t header_addr) {
return nullptr;
}
size_t ObjectFileMinidump::GetModuleSpecifications(
const lldb_private::FileSpec &file, lldb::DataBufferSP &data_sp,
lldb::offset_t data_offset, lldb::offset_t file_offset,
lldb::offset_t length, lldb_private::ModuleSpecList &specs) {
specs.Clear();
return 0;
}
struct DumpFailRemoveHolder {
DumpFailRemoveHolder(MinidumpFileBuilder &builder) : m_builder(builder) {}
~DumpFailRemoveHolder() {
if (!m_success)
m_builder.DeleteFile();
}
void SetSuccess() { m_success = true; }
private:
MinidumpFileBuilder &m_builder;
bool m_success = false;
};
bool ObjectFileMinidump::SaveCore(const lldb::ProcessSP &process_sp,
lldb_private::SaveCoreOptions &options,
lldb_private::Status &error) {
// Output file and process_sp are both checked in PluginManager::SaveCore.
assert(options.GetOutputFile().has_value());
assert(process_sp);
// Minidump defaults to stacks only.
if (options.GetStyle() == SaveCoreStyle::eSaveCoreUnspecified)
options.SetStyle(SaveCoreStyle::eSaveCoreStackOnly);
llvm::Expected<lldb::FileUP> maybe_core_file = FileSystem::Instance().Open(
options.GetOutputFile().value(),
File::eOpenOptionWriteOnly | File::eOpenOptionCanCreate);
if (!maybe_core_file) {
error = Status::FromError(maybe_core_file.takeError());
return false;
}
MinidumpFileBuilder builder(std::move(maybe_core_file.get()), process_sp,
options);
DumpFailRemoveHolder request(builder);
Log *log = GetLog(LLDBLog::Object);
error = builder.AddHeaderAndCalculateDirectories();
if (error.Fail()) {
LLDB_LOGF(log, "AddHeaderAndCalculateDirectories failed: %s",
error.AsCString());
return false;
};
error = builder.AddSystemInfo();
if (error.Fail()) {
LLDB_LOGF(log, "AddSystemInfo failed: %s", error.AsCString());
return false;
}
error = builder.AddModuleList();
if (error.Fail()) {
LLDB_LOGF(log, "AddModuleList failed: %s", error.AsCString());
return false;
}
error = builder.AddMiscInfo();
if (error.Fail()) {
LLDB_LOGF(log, "AddMiscInfo failed: %s", error.AsCString());
return false;
}
error = builder.AddThreadList();
if (error.Fail()) {
LLDB_LOGF(log, "AddThreadList failed: %s", error.AsCString());
return false;
}
error = builder.AddLinuxFileStreams();
if (error.Fail()) {
LLDB_LOGF(log, "AddLinuxFileStreams failed: %s", error.AsCString());
return false;
}
// Add any exceptions but only if there are any in any threads.
error = builder.AddExceptions();
if (error.Fail()) {
LLDB_LOGF(log, "AddExceptions failed: %s", error.AsCString());
return false;
}
// Note: add memory HAS to be the last thing we do. It can overflow into 64b
// land and many RVA's only support 32b
error = builder.AddMemoryList();
if (error.Fail()) {
LLDB_LOGF(log, "AddMemoryList failed: %s", error.AsCString());
return false;
}
error = builder.DumpFile();
if (error.Fail()) {
LLDB_LOGF(log, "DumpFile failed: %s", error.AsCString());
return false;
}
request.SetSuccess();
return true;
}
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