/*
File Kmd.cpp
By WzrterFX
*/
#include "Kmd.h"
namespace Kmd {
NTSTATUS Kmd::Create(PDRIVER_OBJECT driverObject) {
NTSTATUS status = STATUS_UNSUCCESSFUL;
UNICODE_STRING deviceName { };
RtlInitUnicodeString(&deviceName, L"\\Device\\Kmd");
status = IoCreateDevice(
driverObject, NULL, &deviceName,
FILE_DEVICE_UNKNOWN,
FILE_DEVICE_SECURE_OPEN, FALSE, &_deviceObject
);
if (!NT_SUCCESS(status)) {
DbgPrintEx(0, 0,
"Fatal, failed to create driver device.\n"
);
return status;
}
UNICODE_STRING symbolicLink { };
RtlInitUnicodeString(&symbolicLink, L"\\DosDevices\\Kmd");
status = IoCreateSymbolicLink(&symbolicLink, &deviceName);
if (!NT_SUCCESS(status)) {
DbgPrintEx(0, 0,
"Fatal, failed to establish driver link.\n"
);
IoDeleteDevice(_deviceObject);
return status;
}
SetFlag(_deviceObject->Flags, DO_BUFFERED_IO);
driverObject->
MajorFunction[IRP_MJ_CREATE] = [](PDEVICE_OBJECT, PIRP io) -> NTSTATUS {
IoCompleteRequest(io, IO_NO_INCREMENT);
return io->IoStatus.Status;
};
driverObject->
MajorFunction[IRP_MJ_CLOSE] = [](PDEVICE_OBJECT, PIRP io) -> NTSTATUS {
IoCompleteRequest(io, IO_NO_INCREMENT);
return io->IoStatus.Status;
};
driverObject->
MajorFunction[IRP_MJ_DEVICE_CONTROL] = &this->KmdControl;
ClearFlag(_deviceObject->Flags, DO_DEVICE_INITIALIZING);
return STATUS_SUCCESS;
}
NTSTATUS Kmd::KmdControl(PDEVICE_OBJECT, PIRP io) {
NTSTATUS status = STATUS_UNSUCCESSFUL;
PIO_STACK_LOCATION stack = IoGetCurrentIrpStackLocation(io);
if (!stack) {
IoCompleteRequest(io, IO_NO_INCREMENT);
DbgPrintEx(0, 0,
"Fatal, missing driver stack location.\n"
);
return status;
}
PKmdRequest request = reinterpret_cast<PKmdRequest>(io->AssociatedIrp.
SystemBuffer);
if (!request) {
IoCompleteRequest(io, IO_NO_INCREMENT);
DbgPrintEx(0, 0,
"Fatal, missing driver associated request.\n"
);
return status;
}
static PEPROCESS process { };
static SIZE_T reserved { };
switch (stack->Parameters.DeviceIoControl.IoControlCode) {
case ::Kmd::_IoCtls::attach: {
status = ::Kmd::_NtifsApi::PsLookupProcessByProcessId(
request->attachRequest.process, &process
);
break;
}
case ::Kmd::_IoCtls::read: {
if (process) {
status = ::Kmd::_NtifsApi::MmCopyVirtualMemory(
process, request->copyMemoryRequest.from, PsGetCurrentProcess(), request->copyMemoryRequest.to,
request->copyMemoryRequest.requested,
MODE::KernelMode, &reserved
);
}
break;
}
case ::Kmd::_IoCtls::write: {
if (process) {
status = ::Kmd::_NtifsApi::MmCopyVirtualMemory(
PsGetCurrentProcess(), request->copyMemoryRequest.to, process, request->copyMemoryRequest.from,
request->copyMemoryRequest.requested,
MODE::KernelMode, &reserved
);
}
break;
}
default: {
status = STATUS_INVALID_DEVICE_REQUEST;
break;
}
}
io->IoStatus.Status = status;
io->IoStatus.Information = sizeof(KmdRequest);
IoCompleteRequest(io, IO_NO_INCREMENT);
return status;
}
}帮我全部加上注释
本文列举了Windows操作系统中常见的文件操作API，包括创建、关闭、读写等基本操作及设备控制、安全设置等高级功能。对于理解Windows平台上的文件交互机制具有很好的参考价值。
扫一扫
2415
被折叠的 条评论
为什么被折叠?
到【灌水乐园】发言
