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tracking all mapped memory, CloseHandle!

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merge-requests/1/head
xerox 5 years ago
parent 8e8e306c52
commit c4e6cbbd17
2 changed files with 52 additions and 19 deletions
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35
physmeme-lib/physmeme/physmeme.hpp
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@ -19,17 +19,23 @@ typedef struct _GIOMAP
} GIOMAP;
#pragma pack ( pop )
#define MAP_PHYS 0xC3502004
#define UNMAP_PHYS 0xC3502008
namespace physmeme
{
inline std::string drv_key;
inline HANDLE drv_handle = NULL;
// keep track of mappings.
inline std::vector<std::pair<std::uintptr_t, std::uint32_t >> virtual_mappings;
//
// please code this function depending on your method of physical read/write.
//
inline bool load_drv()
{
const auto [result, key] =
const auto [result, key] =
driver::load(
raw_driver,
sizeof(raw_driver)
@ -38,11 +44,11 @@ namespace physmeme
drv_key = key;
drv_handle = CreateFile(
"\\\\.\\GIO",
GENERIC_READ | GENERIC_WRITE,
GENERIC_READ | GENERIC_WRITE,
NULL,
NULL,
OPEN_EXISTING,
FILE_ATTRIBUTE_NORMAL,
OPEN_EXISTING,
FILE_ATTRIBUTE_NORMAL,
NULL
);
return drv_handle;
@ -53,7 +59,7 @@ namespace physmeme
//
inline bool unload_drv()
{
return driver::unload(drv_key);
return CloseHandle(drv_handle) && driver::unload(drv_key);
}
//
@ -71,8 +77,10 @@ namespace physmeme
GIOMAP in_buffer = { 0, 0, addr, 0, size };
uintptr_t out_buffer[2] = { 0 };
unsigned long returned = 0;
DeviceIoControl(drv_handle, 0xC3502004, reinterpret_cast<LPVOID>(&in_buffer), sizeof(in_buffer),
DeviceIoControl(drv_handle, MAP_PHYS, reinterpret_cast<LPVOID>(&in_buffer), sizeof(in_buffer),
reinterpret_cast<LPVOID>(out_buffer), sizeof(out_buffer), &returned, NULL);
virtual_mappings.emplace_back(std::pair<std::uintptr_t, std::size_t>(out_buffer[0], size));
return out_buffer[0];
}
@ -85,11 +93,20 @@ namespace physmeme
)
{
uintptr_t in_buffer = addr;
uintptr_t out_buffer[2] = {sizeof(out_buffer)};
uintptr_t out_buffer[2] = { sizeof(out_buffer) };
unsigned long returned = NULL;
DeviceIoControl(drv_handle, 0xC3502008, reinterpret_cast<LPVOID>(&in_buffer), sizeof(in_buffer),
DeviceIoControl(drv_handle, UNMAP_PHYS, reinterpret_cast<LPVOID>(&in_buffer), sizeof(in_buffer),
reinterpret_cast<LPVOID>(out_buffer), sizeof(out_buffer), &returned, NULL);
return out_buffer[0];
}
}
//
// unmap all physical memory that was mapped.
//
inline void unmap_all()
{
for (auto idx = 0u; idx < virtual_mappings.size(); ++idx)
unmap_phys(virtual_mappings[idx].first, virtual_mappings[idx].second);
}
}

36
physmeme/physmeme/physmeme.hpp
Unescape View File

@ -19,30 +19,36 @@ typedef struct _GIOMAP
} GIOMAP;
#pragma pack ( pop )
#define MAP_PHYS 0xC3502004
#define UNMAP_PHYS 0xC3502008
namespace physmeme
{
inline std::string drv_key;
inline HANDLE drv_handle = NULL;
// keep track of mappings.
inline std::vector<std::pair<std::uintptr_t, std::uint32_t >> virtual_mappings;
//
// please code this function depending on your method of physical read/write.
//
inline bool load_drv()
{
const auto [result, key] =
const auto [result, key] =
driver::load(
raw_driver,
raw_driver,
sizeof(raw_driver)
);
drv_key = key;
drv_handle = CreateFile(
"\\\\.\\GIO",
GENERIC_READ | GENERIC_WRITE,
GENERIC_READ | GENERIC_WRITE,
NULL,
NULL,
OPEN_EXISTING,
FILE_ATTRIBUTE_NORMAL,
OPEN_EXISTING,
FILE_ATTRIBUTE_NORMAL,
NULL
);
return drv_handle;
@ -71,10 +77,11 @@ namespace physmeme
GIOMAP in_buffer = { 0, 0, addr, 0, size };
uintptr_t out_buffer[2] = { 0 };
unsigned long returned = 0;
DeviceIoControl(drv_handle, 0xC3502004, reinterpret_cast<LPVOID>(&in_buffer), sizeof(in_buffer),
DeviceIoControl(drv_handle, MAP_PHYS, reinterpret_cast<LPVOID>(&in_buffer), sizeof(in_buffer),
reinterpret_cast<LPVOID>(out_buffer), sizeof(out_buffer), &returned, NULL);
return out_buffer[0];
virtual_mappings.emplace_back(std::pair<std::uintptr_t, std::size_t>(out_buffer[0], size));
return out_buffer[0];
}
//
@ -86,11 +93,20 @@ namespace physmeme
)
{
uintptr_t in_buffer = addr;
uintptr_t out_buffer[2] = {sizeof(out_buffer)};
uintptr_t out_buffer[2] = { sizeof(out_buffer) };
unsigned long returned = NULL;
DeviceIoControl(drv_handle, 0xC3502008, reinterpret_cast<LPVOID>(&in_buffer), sizeof(in_buffer),
DeviceIoControl(drv_handle, UNMAP_PHYS, reinterpret_cast<LPVOID>(&in_buffer), sizeof(in_buffer),
reinterpret_cast<LPVOID>(out_buffer), sizeof(out_buffer), &returned, NULL);
return out_buffer[0];
}
}
//
// unmap all physical memory that was mapped.
//
inline void unmap_all()
{
for (auto idx = 0u; idx < virtual_mappings.size(); ++idx)
unmap_phys(virtual_mappings[idx].first, virtual_mappings[idx].second);
}
}
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