public static unsafe SharedMemory Create(string name, Guid content, List <SecurityIdentifier> allowedSids)
{
int errorCode = UnsafeNativeMethods.ERROR_SUCCESS;
byte[] binarySecurityDescriptor = SecurityDescriptorHelper.FromSecurityIdentifiers(allowedSids, UnsafeNativeMethods.GENERIC_READ);
SafeFileMappingHandle fileMapping;
UnsafeNativeMethods.SECURITY_ATTRIBUTES securityAttributes = new UnsafeNativeMethods.SECURITY_ATTRIBUTES();
fixed(byte *pinnedSecurityDescriptor = binarySecurityDescriptor)
{
securityAttributes.lpSecurityDescriptor = (IntPtr)pinnedSecurityDescriptor;
fileMapping = UnsafeNativeMethods.CreateFileMapping((IntPtr)(-1), securityAttributes, UnsafeNativeMethods.PAGE_READWRITE, 0, sizeof(SharedMemoryContents), name);
errorCode = Marshal.GetLastWin32Error();
}
if (fileMapping.IsInvalid)
{
fileMapping.SetHandleAsInvalid();
fileMapping.Close();
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new Win32Exception(errorCode));
}
SharedMemory sharedMemory = new SharedMemory(fileMapping);
SafeViewOfFileHandle view;
// Ignore return value.
GetView(fileMapping, true, out view);
try
{
SharedMemoryContents *contents = (SharedMemoryContents *)view.DangerousGetHandle();
contents->pipeGuid = content;
Thread.MemoryBarrier();
contents->isInitialized = true;
return(sharedMemory);
}
finally
{
view.Close();
}
}
public static unsafe SharedMemory Create(string name, Guid content, List <SecurityIdentifier> allowedSids)
{
SafeFileMappingHandle handle;
SafeViewOfFileHandle handle2;
SharedMemory memory2;
int error = 0;
byte[] buffer = SecurityDescriptorHelper.FromSecurityIdentifiers(allowedSids, -2147483648);
UnsafeNativeMethods.SECURITY_ATTRIBUTES securityAttributes = new UnsafeNativeMethods.SECURITY_ATTRIBUTES();
fixed(byte *numRef = buffer)
{
securityAttributes.lpSecurityDescriptor = (IntPtr)numRef;
handle = UnsafeNativeMethods.CreateFileMapping((IntPtr)(-1), securityAttributes, 4, 0, sizeof(SharedMemoryContents), name);
error = Marshal.GetLastWin32Error();
}
if (handle.IsInvalid)
{
handle.SetHandleAsInvalid();
handle.Close();
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new Win32Exception(error));
}
SharedMemory memory = new SharedMemory(handle);
GetView(handle, true, out handle2);
try
{
SharedMemoryContents *contentsPtr = (SharedMemoryContents *)handle2.DangerousGetHandle();
contentsPtr->pipeGuid = content;
Thread.MemoryBarrier();
contentsPtr->isInitialized = true;
memory2 = memory;
}
finally
{
handle2.Close();
}
return(memory2);
}
