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sys: FileRenameResource implementation

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This commit is contained in:
Bill Zissimopoulos
2016-02-07 11:01:15 -08:00
parent 3ef9042071
commit 9c200f2a62
5 changed files with 135 additions and 30 deletions
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62
src/sys/device.c
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@ -25,6 +25,11 @@ static NTSTATUS FspFsvolDeviceInit(PDEVICE_OBJECT DeviceObject);
static VOID FspFsvolDeviceFini(PDEVICE_OBJECT DeviceObject);
static IO_TIMER_ROUTINE FspFsvolDeviceTimerRoutine;
static WORKER_THREAD_ROUTINE FspFsvolDeviceExpirationRoutine;
VOID FspFsvolDeviceFileRenameAcquireShared(PDEVICE_OBJECT DeviceObject);
VOID FspFsvolDeviceFileRenameAcquireExclusive(PDEVICE_OBJECT DeviceObject);
VOID FspFsvolDeviceFileRenameSetOwner(PDEVICE_OBJECT DeviceObject, PVOID Owner);
VOID FspFsvolDeviceFileRenameRelease(PDEVICE_OBJECT DeviceObject);
VOID FspFsvolDeviceFileRenameReleaseOwner(PDEVICE_OBJECT DeviceObject, PVOID Owner);
VOID FspFsvolDeviceLockContextTable(PDEVICE_OBJECT DeviceObject);
VOID FspFsvolDeviceUnlockContextTable(PDEVICE_OBJECT DeviceObject);
PVOID FspFsvolDeviceLookupContext(PDEVICE_OBJECT DeviceObject, UINT64 Identifier);
@ -60,6 +65,11 @@ VOID FspDeviceDeleteAll(VOID);
#pragma alloc_text(PAGE, FspDeviceDelete)
#pragma alloc_text(PAGE, FspFsvolDeviceInit)
#pragma alloc_text(PAGE, FspFsvolDeviceFini)
#pragma alloc_text(PAGE, FspFsvolDeviceFileRenameAcquireShared)
#pragma alloc_text(PAGE, FspFsvolDeviceFileRenameAcquireExclusive)
#pragma alloc_text(PAGE, FspFsvolDeviceFileRenameSetOwner)
#pragma alloc_text(PAGE, FspFsvolDeviceFileRenameRelease)
#pragma alloc_text(PAGE, FspFsvolDeviceFileRenameReleaseOwner)
#pragma alloc_text(PAGE, FspFsvolDeviceLockContextTable)
#pragma alloc_text(PAGE, FspFsvolDeviceUnlockContextTable)
#pragma alloc_text(PAGE, FspFsvolDeviceLookupContext)
@ -437,6 +447,58 @@ static VOID FspFsvolDeviceExpirationRoutine(PVOID Context)
FspDeviceDereference(DeviceObject);
}
VOID FspFsvolDeviceFileRenameAcquireShared(PDEVICE_OBJECT DeviceObject)
{
PAGED_CODE();
FSP_FSVOL_DEVICE_EXTENSION *FsvolDeviceExtension = FspFsvolDeviceExtension(DeviceObject);
ExAcquireResourceSharedLite(&FsvolDeviceExtension->FileRenameResource, TRUE);
}
VOID FspFsvolDeviceFileRenameAcquireExclusive(PDEVICE_OBJECT DeviceObject)
{
PAGED_CODE();
FSP_FSVOL_DEVICE_EXTENSION *FsvolDeviceExtension = FspFsvolDeviceExtension(DeviceObject);
ExAcquireResourceExclusiveLite(&FsvolDeviceExtension->FileRenameResource, TRUE);
}
VOID FspFsvolDeviceFileRenameSetOwner(PDEVICE_OBJECT DeviceObject, PVOID Owner)
{
PAGED_CODE();
FSP_FSVOL_DEVICE_EXTENSION *FsvolDeviceExtension = FspFsvolDeviceExtension(DeviceObject);
Owner = (PVOID)((UINT_PTR)Owner | 3);
ExSetResourceOwnerPointer(&FsvolDeviceExtension->FileRenameResource, Owner);
}
VOID FspFsvolDeviceFileRenameRelease(PDEVICE_OBJECT DeviceObject)
{
PAGED_CODE();
FSP_FSVOL_DEVICE_EXTENSION *FsvolDeviceExtension = FspFsvolDeviceExtension(DeviceObject);
ExReleaseResourceLite(&FsvolDeviceExtension->FileRenameResource);
}
VOID FspFsvolDeviceFileRenameReleaseOwner(PDEVICE_OBJECT DeviceObject, PVOID Owner)
{
PAGED_CODE();
FSP_FSVOL_DEVICE_EXTENSION *FsvolDeviceExtension = FspFsvolDeviceExtension(DeviceObject);
Owner = (PVOID)((UINT_PTR)Owner | 3);
if (ExIsResourceAcquiredLite(&FsvolDeviceExtension->FileRenameResource))
ExReleaseResourceLite(&FsvolDeviceExtension->FileRenameResource);
else
ExReleaseResourceForThreadLite(&FsvolDeviceExtension->FileRenameResource, (ERESOURCE_THREAD)Owner);
}
VOID FspFsvolDeviceLockContextTable(PDEVICE_OBJECT DeviceObject)
{
PAGED_CODE();