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