96 lines
1.9 KiB
C
96 lines
1.9 KiB
C
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/*++
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Copyright (c) 1989 Microsoft Corporation
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Module Name:
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session.c
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Abstract:
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This module contains the worker routines called by the Sb API
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Request routines in sbapi.c to create and delete sessions. Also
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called whenever an application process creates a new child process
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within the same session.
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Author:
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Steve Wood (stevewo) 08-Oct-1990
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Revision History:
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--*/
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#include "csrsrv.h"
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NTSTATUS
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CsrInitializeNtSessionList( VOID )
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{
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NTSTATUS Status;
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InitializeListHead( &CsrNtSessionList );
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Status = RtlInitializeCriticalSection( &CsrNtSessionLock );
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return( Status );
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}
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PCSR_NT_SESSION
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CsrAllocateNtSession(
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ULONG SessionId
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)
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{
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PCSR_NT_SESSION Session;
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Session = RtlAllocateHeap( CsrHeap, MAKE_TAG( SESSION_TAG ), sizeof( CSR_NT_SESSION ) );
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ASSERT( Session != NULL );
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if (Session != NULL) {
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Session->SessionId = SessionId;
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Session->ReferenceCount = 1;
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LockNtSessionList();
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InsertHeadList( &CsrNtSessionList, &Session->SessionLink );
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UnlockNtSessionList();
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}
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return( Session );
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}
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VOID
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CsrReferenceNtSession(
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PCSR_NT_SESSION Session
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)
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{
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LockNtSessionList();
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ASSERT( !IsListEmpty( &Session->SessionLink ) );
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ASSERT( Session->SessionId != 0 );
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ASSERT( Session->ReferenceCount != 0 );
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Session->ReferenceCount++;
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UnlockNtSessionList();
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}
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VOID
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CsrDereferenceNtSession(
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PCSR_NT_SESSION Session,
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NTSTATUS ExitStatus
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)
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{
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LockNtSessionList();
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ASSERT( !IsListEmpty( &Session->SessionLink ) );
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ASSERT( Session->SessionId != 0 );
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ASSERT( Session->ReferenceCount != 0 );
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if (--Session->ReferenceCount == 0) {
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RemoveEntryList( &Session->SessionLink );
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UnlockNtSessionList();
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SmSessionComplete(CsrSmApiPort,Session->SessionId,ExitStatus);
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RtlFreeHeap( CsrHeap, 0, Session );
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}
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else {
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UnlockNtSessionList();
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}
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}
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