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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
#include "createdump.h"
#define IMAGE_FILE_MACHINE_AMD64 0x8664 // AMD64 (K8)
DumpDataTarget::DumpDataTarget(pid_t pid) :
m_ref(1),
m_pid(pid),
m_fd(-1),
m_crashInfo(nullptr)
{
}
DumpDataTarget::~DumpDataTarget()
{
if (m_fd != -1)
{
close(m_fd);
m_fd = -1;
}
}
bool
DumpDataTarget::Initialize(CrashInfo * crashInfo)
{
char memPath[128];
_snprintf_s(memPath, sizeof(memPath), sizeof(memPath), "/proc/%lu/mem", m_pid);
m_fd = open(memPath, O_RDONLY);
if (m_fd == -1)
{
fprintf(stderr, "open(%s) FAILED %d (%s)\n", memPath, errno, strerror(errno));
return false;
}
m_crashInfo = crashInfo;
return true;
}
STDMETHODIMP
DumpDataTarget::QueryInterface(
___in REFIID InterfaceId,
___out PVOID* Interface
)
{
if (InterfaceId == IID_IUnknown ||
InterfaceId == IID_ICLRDataTarget)
{
*Interface = (ICLRDataTarget*)this;
AddRef();
return S_OK;
}
else if (InterfaceId == IID_ICorDebugDataTarget4)
{
*Interface = (ICorDebugDataTarget4*)this;
AddRef();
return S_OK;
}
else
{
*Interface = NULL;
return E_NOINTERFACE;
}
}
STDMETHODIMP_(ULONG)
DumpDataTarget::AddRef()
{
LONG ref = InterlockedIncrement(&m_ref);
return ref;
}
STDMETHODIMP_(ULONG)
DumpDataTarget::Release()
{
LONG ref = InterlockedDecrement(&m_ref);
if (ref == 0)
{
delete this;
}
return ref;
}
HRESULT STDMETHODCALLTYPE
DumpDataTarget::GetMachineType(
/* [out] */ ULONG32 *machine)
{
#ifdef _AMD64_
*machine = IMAGE_FILE_MACHINE_AMD64;
#elif _ARM_
*machine = IMAGE_FILE_MACHINE_ARMNT;
#elif _ARM64_
*machine = IMAGE_FILE_MACHINE_ARM64;
#elif _X86_
*machine = IMAGE_FILE_MACHINE_I386;
#else
#error Unsupported architecture
#endif
return S_OK;
}
HRESULT STDMETHODCALLTYPE
DumpDataTarget::GetPointerSize(
/* [out] */ ULONG32 *size)
{
#if defined(_AMD64_) || defined(_ARM64_)
*size = 8;
#elif defined(_ARM_) || defined(_X86_)
*size = 4;
#else
#error Unsupported architecture
#endif
return S_OK;
}
HRESULT STDMETHODCALLTYPE
DumpDataTarget::GetImageBase(
/* [string][in] */ LPCWSTR moduleName,
/* [out] */ CLRDATA_ADDRESS *baseAddress)
{
assert(m_crashInfo != nullptr);
*baseAddress = 0;
char tempModuleName[MAX_PATH];
int length = WideCharToMultiByte(CP_ACP, 0, moduleName, -1, tempModuleName, sizeof(tempModuleName), NULL, NULL);
if (length > 0)
{
for (const MemoryRegion& image : m_crashInfo->ModuleMappings())
{
const char *name = strrchr(image.FileName(), '/');
if (name != nullptr)
{
name++;
}
else
{
name = image.FileName();
}
if (strcmp(name, tempModuleName) == 0)
{
*baseAddress = image.StartAddress();
return S_OK;
}
}
}
return E_FAIL;
}
HRESULT STDMETHODCALLTYPE
DumpDataTarget::ReadVirtual(
/* [in] */ CLRDATA_ADDRESS address,
/* [length_is][size_is][out] */ PBYTE buffer,
/* [in] */ ULONG32 size,
/* [optional][out] */ ULONG32 *done)
{
assert(m_fd != -1);
size_t read = pread64(m_fd, buffer, size, (off64_t)address);
if (read == -1)
{
*done = 0;
return E_FAIL;
}
*done = read;
return S_OK;
}
HRESULT STDMETHODCALLTYPE
DumpDataTarget::WriteVirtual(
/* [in] */ CLRDATA_ADDRESS address,
/* [size_is][in] */ PBYTE buffer,
/* [in] */ ULONG32 size,
/* [optional][out] */ ULONG32 *done)
{
assert(false);
return E_NOTIMPL;
}
HRESULT STDMETHODCALLTYPE
DumpDataTarget::GetTLSValue(
/* [in] */ ULONG32 threadID,
/* [in] */ ULONG32 index,
/* [out] */ CLRDATA_ADDRESS* value)
{
assert(false);
return E_NOTIMPL;
}
HRESULT STDMETHODCALLTYPE
DumpDataTarget::SetTLSValue(
/* [in] */ ULONG32 threadID,
/* [in] */ ULONG32 index,
/* [in] */ CLRDATA_ADDRESS value)
{
assert(false);
return E_NOTIMPL;
}
HRESULT STDMETHODCALLTYPE
DumpDataTarget::GetCurrentThreadID(
/* [out] */ ULONG32* threadID)
{
assert(false);
return E_NOTIMPL;
}
HRESULT STDMETHODCALLTYPE
DumpDataTarget::GetThreadContext(
/* [in] */ ULONG32 threadID,
/* [in] */ ULONG32 contextFlags,
/* [in] */ ULONG32 contextSize,
/* [out, size_is(contextSize)] */ PBYTE context)
{
assert(m_crashInfo != nullptr);
if (contextSize < sizeof(CONTEXT))
{
assert(false);
return E_INVALIDARG;
}
memset(context, 0, contextSize);
for (const ThreadInfo* thread : m_crashInfo->Threads())
{
if (thread->Tid() == threadID)
{
thread->GetThreadContext(contextFlags, reinterpret_cast<CONTEXT*>(context));
return S_OK;
}
}
return E_FAIL;
}
HRESULT STDMETHODCALLTYPE
DumpDataTarget::SetThreadContext(
/* [in] */ ULONG32 threadID,
/* [in] */ ULONG32 contextSize,
/* [out, size_is(contextSize)] */ PBYTE context)
{
assert(false);
return E_NOTIMPL;
}
HRESULT STDMETHODCALLTYPE
DumpDataTarget::Request(
/* [in] */ ULONG32 reqCode,
/* [in] */ ULONG32 inBufferSize,
/* [size_is][in] */ BYTE *inBuffer,
/* [in] */ ULONG32 outBufferSize,
/* [size_is][out] */ BYTE *outBuffer)
{
assert(false);
return E_NOTIMPL;
}
HRESULT STDMETHODCALLTYPE
DumpDataTarget::VirtualUnwind(
/* [in] */ DWORD threadId,
/* [in] */ ULONG32 contextSize,
/* [in, out, size_is(contextSize)] */ PBYTE context)
{
return E_NOTIMPL;
}
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