1. You should set EaValue to ULONG “Connetion context”
dwSize = FIELD_OFFSET( FILE_FULL_EA_INFORMATION, EaName[0] ) + TDI_CONNECTION_CONTEXT_LENGTH + 1 + sizeof(CONNECTION_CONTEXT);
eaInfo = (PFILE_FULL_EA_INFORMATION)ExAllocatePool(PagedPool, dwSize);
eaInfo->NextEntryOffset = 0;
eaInfo->Flags = 0;
eaInfo->EaNameLength = TDI_CONNECTION_CONTEXT_LENGTH;
eaInfo->EaValueLength = sizeof(CONNECTION_CONTEXT);
RtlCopyMemory(
eaInfo->EaName,
TdiConnectionContext,
TDI_CONNECTION_CONTEXT_LENGTH+1
);
RtlCopyMemory(
&eaInfo->EaName[TDI_CONNECTION_CONTEXT_LENGTH+1],
pConnectionContext,
sizeof(CONNECTION_CONTEXT)
);
2. It’s better to open “connection endpoint” with the following attributes:
ZwCreateFile(
Handle, // Handle
GENERIC_READ | GENERIC_WRITE | SYNCHRONIZE, // Desired Access
&ObjectAttributes, // Object Attributes
&IoStatusBlock, // Final I/O status block
0, // Allocation Size
FILE_ATTRIBUTE_NORMAL, // Normal attributes
FILE_SHARE_READ, // Sharing attributes
FILE_OPEN_IF, // Create disposition
0, // CreateOptions
pConnectionContextEa, // EA Buffer
TransportEaBufferLength // EA length
);