Source code of Windows XP (NT5)
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/*++
Copyright (c) 1989 Microsoft Corporation
Module Name:
sbreqst.c
Abstract:
This module contains the Server Request thread procedure for the Sb
API calls exported by the POSIX Emulation SubSystem to the Session
Manager SubSystem.
Author:
Steve Wood (stevewo) 20-Sep-1989
Revision History:
Ellen Aycock-Wright (ellena) 16-Jul-91 Modified for POSIX
--*/
#include "psxsrv.h"
NTSTATUS
PsxSbApiHandleConnectionRequest(
IN PSBAPIMSG Message
);
//PSB_API_ROUTINE PsxServerSbApiDispatch[ SbMaxApiNumber+1 ] = {
// PsxSbCreateSession,
// PsxSbTerminateSession,
// PsxSbForeignSessionComplete,
// NULL
//};
NTSTATUS
PsxSbApiRequestThread(
IN PVOID Parameter
)
{
NTSTATUS Status;
SBAPIMSG ReceiveMsg;
PSBAPIMSG ReplyMsg;
UNREFERENCED_PARAMETER(Parameter);
ReplyMsg = NULL;
while (TRUE) {
IF_PSX_DEBUG( LPC ) {
KdPrint(("PSXSS: Sb Api Request Thread waiting...\n"));
}
Status = NtReplyWaitReceivePort(PsxSbApiPort, NULL,
(PPORT_MESSAGE)ReplyMsg, (PPORT_MESSAGE)&ReceiveMsg);
if (Status != 0) {
if (NT_SUCCESS(Status)) {
continue; // Try again if alerted or a failure
} else {
IF_PSX_DEBUG( LPC ) {
KdPrint(("PSXSS: SB ReceivePort failed:Status == %X\n",
Status));
}
break;
}
}
//
// Check to see if this is a connection request and handle
//
if (ReceiveMsg.h.u2.s2.Type == LPC_CONNECTION_REQUEST) {
PsxSbApiHandleConnectionRequest( &ReceiveMsg );
ReplyMsg = NULL;
continue;
}
if (ReceiveMsg.ApiNumber >= SbMaxApiNumber) {
IF_PSX_DEBUG(LPC) {
KdPrint(("PSXSS: %lx is invalid Sb ApiNumber\n",
ReceiveMsg.ApiNumber));
}
ReceiveMsg.ApiNumber = SbMaxApiNumber;
}
ReplyMsg = &ReceiveMsg;
if (ReceiveMsg.ApiNumber < SbMaxApiNumber) {
// if (!(*PsxServerSbApiDispatch[ ReceiveMsg.ApiNumber ])( &ReceiveMsg )) {
ReplyMsg = NULL;
// }
// }
// else {
// ReplyMsg->ReturnedStatus = STATUS_NOT_IMPLEMENTED;
}
}
NtTerminateThread( NtCurrentThread(), Status );
//
// This line should never be executed
//
return STATUS_SUCCESS;
}
NTSTATUS
PsxSbApiHandleConnectionRequest(
IN PSBAPIMSG Message
)
{
NTSTATUS st;
REMOTE_PORT_VIEW ClientView;
HANDLE CommunicationPort;
//
// The protocol for a subsystem is to connect to the session manager,
// then to listen and accept a connection from the session manager
//
ClientView.Length = sizeof(ClientView);
st = NtAcceptConnectPort(
&CommunicationPort,
NULL,
(PPORT_MESSAGE)Message,
TRUE,
NULL,
&ClientView
);
if ( !NT_SUCCESS(st) ) {
KdPrint(("PSXSS: Sb Accept Connection failed %lx\n",st));
return st;
}
st = NtCompleteConnectPort(CommunicationPort);
if ( !NT_SUCCESS(st) ) {
KdPrint(("PSXSS: Sb Complete Connection failed %lx\n",st));
}
return st;
}