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- Fix bug 1764 reported by alexvlas.

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svn path=/trunk/; revision=23622
This commit is contained in:
Alex Ionescu 2006-08-20 20:00:56 +00:00
parent 233e643648
commit baf87a4cfb
1 changed files with 24 additions and 10 deletions
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34
reactos/ntoskrnl/io/iomgr/device.c
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@ -1067,6 +1067,7 @@ IoGetDiskDeviceObject(IN PDEVICE_OBJECT FileSystemDeviceObject,
PEXTENDED_DEVOBJ_EXTENSION DeviceExtension;
PVPB Vpb;
KIRQL OldIrql;
NTSTATUS Status;
/* Make sure there's a VPB */
if (!FileSystemDeviceObject->Vpb) return STATUS_INVALID_PARAMETER;
@ -1079,21 +1080,34 @@ IoGetDiskDeviceObject(IN PDEVICE_OBJECT FileSystemDeviceObject,
/* Make sure this one has a VPB too */
Vpb = DeviceExtension->Vpb;
if (!Vpb) return STATUS_INVALID_PARAMETER;
/* Make sure that it's mounted */
if ((!Vpb->ReferenceCount) || (Vpb->Flags & VPB_MOUNTED))
if (Vpb)
{
/* It's not, so return failure */
return STATUS_VOLUME_DISMOUNTED;
}
/* Make sure that it's mounted */
if ((Vpb->ReferenceCount) &&
(Vpb->Flags & VPB_MOUNTED))
{
/* Return the Disk Device Object */
*DiskDeviceObject = Vpb->RealDevice;
/* Return the Disk Device Object */
*DiskDeviceObject = Vpb->RealDevice;
/* Reference it and return success */
ObReferenceObject(Vpb->RealDevice);
Status = STATUS_SUCCESS;
}
else
{
/* It's not, so return failure */
return STATUS_VOLUME_DISMOUNTED;
}
}
else
{
/* Fail */
Status = STATUS_INVALID_PARAMETER;
}
/* Release the lock */
IoReleaseVpbSpinLock(OldIrql);
return STATUS_SUCCESS;
return Status;
}
/*