我正在尝试调用 WinAPI 函数DeviceIoControl
在 C# 中使用代码IOCTL_DISK_SET_DISK_ATTRIBUTES并传递结构SET_DISK_ATTRIBUTES。我正在尝试用这段代码来做到这一点:
const uint GENERIC_READ = 0x80000000;
const uint GENERIC_WRITE = 0x40000000;
const int FILE_SHARE_READ = 0x1;
const int FILE_SHARE_WRITE = 0x2;
const uint IOCTL_DISK_SET_DISK_ATTRIBUTES = 0x0007c0f4;
const ulong DISK_ATTRIBUTE_READ_ONLY = 0x0000000000000002;
[DllImport("kernel32.dll", SetLastError = true, CharSet = CharSet.Auto)]
private static extern IntPtr CreateFile(
string lpFileName,
uint dwDesiredAccess,
uint dwShareMode,
IntPtr SecurityAttributes,
uint dwCreationDisposition,
uint dwFlagsAndAttributes,
IntPtr hTemplateFile
);
[DllImport("kernel32.dll", ExactSpelling = true, SetLastError = true, CharSet = CharSet.Auto)]
private static extern bool DeviceIoControl(
IntPtr hDevice,
uint dwIoControlCode,
IntPtr lpInBuffer,
uint nInBufferSize,
IntPtr lpOutBuffer,
uint nOutBufferSize,
out uint lpBytesReturned,
IntPtr lpOverlapped
);
struct SET_DISK_ATTRIBUTES
{
public uint Version;
public bool Persist;
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 3)]
public byte[] Reserved1;
public ulong Attributes;
public ulong AttributesMask;
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 4)]
public uint[] Reserved2;
};
private bool SetReadonly(IntPtr handle)
{
var sda = new SET_DISK_ATTRIBUTES();
sda.AttributesMask = DISK_ATTRIBUTE_READ_ONLY;
sda.Attributes = DISK_ATTRIBUTE_READ_ONLY;
int nPtrQryBytes = Marshal.SizeOf(sda);
sda.Version = (uint)nPtrQryBytes;
IntPtr ptrQuery = Marshal.AllocHGlobal(nPtrQryBytes);
Marshal.StructureToPtr(sda, ptrQuery, false);
uint byteReturned;
var res = DeviceIoControl(handle, IOCTL_DISK_SET_DISK_ATTRIBUTES, ptrQuery, (uint)nPtrQryBytes, IntPtr.Zero, 0, out byteReturned, IntPtr.Zero);
var ex = new Win32Exception(Marshal.GetLastWin32Error());
MessageBox.Show(ex.Message);
return res;
}
我收到错误“参数不正确”。正确的打电话方式是什么DeviceIoControl
函数传递结构SET_DISK_ATTRIBUTES?