|
private CreateFile ( string lpFileName, uint dwDesiredAccess, int dwShareMode, SECURITY_ATTRIBUTES &lpSecurityAttributes, int dwCreationDisposition, int dwFlagsAndAttributes, int hTemplateFile ) : |
||
| lpFileName | string | |
| dwDesiredAccess | uint | |
| dwShareMode | int | |
| lpSecurityAttributes | SECURITY_ATTRIBUTES | |
| dwCreationDisposition | int | |
| dwFlagsAndAttributes | int | |
| hTemplateFile | int | |
| return | ||
private SafeFileHandle OpenHandle(String devicePathName, Boolean isExclusive)
{
SafeFileHandle hidHandle;
if (isExclusive)
{
hidHandle = NativeMethods.CreateFile(devicePathName, NativeMethods.GENERIC_READ | NativeMethods.GENERIC_WRITE, 0, IntPtr.Zero, NativeMethods.OpenExisting, 0x20000000 | 0x80000000 | 0x100 | NativeMethods.FILE_FLAG_OVERLAPPED, 0);
}
else
{
hidHandle = NativeMethods.CreateFile(devicePathName, NativeMethods.GENERIC_READ | NativeMethods.GENERIC_WRITE, NativeMethods.FILE_SHARE_READ | NativeMethods.FILE_SHARE_WRITE, IntPtr.Zero, NativeMethods.OpenExisting, 0x20000000 | 0x80000000 | 0x100 | NativeMethods.FILE_FLAG_OVERLAPPED, 0);
}
return(hidHandle);
}
private SafeFileHandle OpenHandle(String devicePathName, Boolean isExclusive, bool enumerate)
{
SafeFileHandle hidHandle;
uint access = enumerate ? 0 : NativeMethods.GENERIC_READ | NativeMethods.GENERIC_WRITE;
if (isExclusive)
{
hidHandle = NativeMethods.CreateFile(devicePathName, access, 0, IntPtr.Zero, NativeMethods.OpenExisting, NativeMethods.FILE_FLAG_NO_BUFFERING | NativeMethods.FILE_FLAG_WRITE_THROUGH | NativeMethods.FILE_ATTRIBUTE_TEMPORARY | NativeMethods.FILE_FLAG_OVERLAPPED, 0);
}
else
{
hidHandle = NativeMethods.CreateFile(devicePathName, access, NativeMethods.FILE_SHARE_READ | NativeMethods.FILE_SHARE_WRITE, IntPtr.Zero, NativeMethods.OpenExisting, NativeMethods.FILE_FLAG_NO_BUFFERING | NativeMethods.FILE_FLAG_WRITE_THROUGH | NativeMethods.FILE_ATTRIBUTE_TEMPORARY | NativeMethods.FILE_FLAG_OVERLAPPED, 0);
}
return(hidHandle);
}
private SafeFileHandle OpenHandle(String devicePathName, Boolean isExclusive)
{
SafeFileHandle hidHandle;
try
{
if (isExclusive)
{
hidHandle = NativeMethods.CreateFile(devicePathName, NativeMethods.GENERIC_READ | NativeMethods.GENERIC_WRITE, 0, IntPtr.Zero, NativeMethods.OpenExisting, 0, 0);
}
else
{
hidHandle = NativeMethods.CreateFile(devicePathName, NativeMethods.GENERIC_READ | NativeMethods.GENERIC_WRITE, NativeMethods.FILE_SHARE_READ | NativeMethods.FILE_SHARE_WRITE, IntPtr.Zero, NativeMethods.OpenExisting, 0, 0);
}
}
catch (Exception)
{
throw;
}
return(hidHandle);
}
private IntPtr OpenHandle(String devicePathName, Boolean isExclusive)
{
IntPtr hidHandle;
NativeMethods.SECURITY_ATTRIBUTES secAttribs = new NativeMethods.SECURITY_ATTRIBUTES();
try
{
if (isExclusive)
{
hidHandle = NativeMethods.CreateFile(devicePathName, NativeMethods.GENERIC_READ | NativeMethods.GENERIC_WRITE, NativeMethods.FILE_SHARE_READ | NativeMethods.FILE_SHARE_WRITE, ref secAttribs, NativeMethods.OpenExisting, 0, 0);
}
else
{
hidHandle = NativeMethods.CreateFile(devicePathName, NativeMethods.GENERIC_READ | NativeMethods.GENERIC_WRITE, NativeMethods.FILE_SHARE_READ | NativeMethods.FILE_SHARE_WRITE, ref secAttribs, NativeMethods.OpenExisting, 0, 0);
}
}
catch (Exception)
{
throw;
}
return(hidHandle);
}
