69 lines
1.4 KiB
C
69 lines
1.4 KiB
C
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/*
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* SERVICE.C
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*
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*
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* DRIVEARB.DLL - Shared Drive Aribiter for shared disks and libraries
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* - inter-machine sharing client
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* - inter-app sharing service
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*
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* Author: ErvinP
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*
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* (c) 2000 Microsoft Corporation
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*
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*/
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#include <windows.h>
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#include <stdlib.h>
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#include <wtypes.h>
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#include <dlmhdr.h> // BUGBUG - get a common DLM header from Cluster team
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#include <drivearb.h>
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#include "internal.h"
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HANDLE __stdcall RegisterSharedDrive(LPSTR driveName)
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{
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driveContext *drive;
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WaitForSingleObject(g_hSharedGlobalMutex, INFINITE);
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drive = NewDriveContext(driveName);
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if (drive){
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drive->state = DRIVESTATE_UNAVAILABLE_LOCALLY;
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}
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ReleaseMutex(g_hSharedGlobalMutex);
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return (HANDLE)drive;
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}
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BOOL __stdcall UnRegisterSharedDrive(HANDLE hDrive)
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{
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driveContext *drive = (driveContext *)hDrive;
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BOOL ok = FALSE;
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WaitForSingleObject(g_hSharedGlobalMutex, INFINITE);
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if (drive->sig == DRIVEARB_SIG){ // sanity check
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if (drive->sessionReferenceCount == 0){
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FreeDriveContext(drive);
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ok = TRUE;
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}
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else {
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// BUGBUG FINISH - forcefully invalidate handles, etc.
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ASSERT(drive->sessionReferenceCount == 0);
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}
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}
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else {
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ASSERT(drive->sig == DRIVEARB_SIG);
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}
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ReleaseMutex(g_hSharedGlobalMutex);
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return ok;
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}
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