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sys: major change in device management: introduce FspDeviceGlobalLock and remove FSP_FSVOL_DEVICE_EXTENSION::DeleteResource; makes locking coarse-grained but more generic and safe

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This commit is contained in:
Bill Zissimopoulos
2016-04-18 13:48:50 -07:00
parent 6dd6ec6b47
commit c40ce93fe2
4 changed files with 63 additions and 33 deletions
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16
src/sys/driver.h
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@ -742,14 +742,13 @@ typedef struct
typedef struct
{
FSP_DEVICE_EXTENSION Base;
UINT32 InitDoneFsvrt:1, InitDoneDelRsc:1, InitDoneIoq:1, InitDoneSec:1, InitDoneDir:1,
UINT32 InitDoneFsvrt:1, InitDoneIoq:1, InitDoneSec:1, InitDoneDir:1,
InitDoneCtxTab:1, InitDoneTimer:1, InitDoneInfo:1, InitDoneNotify:1;
PDEVICE_OBJECT FsctlDeviceObject;
PDEVICE_OBJECT FsvrtDeviceObject;
HANDLE MupHandle;
PVPB SwapVpb;
FSP_DELAYED_WORK_ITEM DeleteVolumeDelayedWorkItem;
ERESOURCE DeleteResource;
FSP_FSCTL_VOLUME_PARAMS VolumeParams;
UNICODE_STRING VolumePrefix;
FSP_IOQ *Ioq;
@ -825,6 +824,18 @@ NTSTATUS FspDeviceCopyList(
VOID FspDeviceDeleteList(
PDEVICE_OBJECT *DeviceObjects, ULONG DeviceObjectCount);
VOID FspDeviceDeleteAll(VOID);
static inline
VOID FspDeviceGlobalLock(VOID)
{
extern ERESOURCE FspDeviceGlobalResource;
ExAcquireResourceExclusiveLite(&FspDeviceGlobalResource, TRUE);
}
static inline
VOID FspDeviceGlobalUnlock(VOID)
{
extern ERESOURCE FspDeviceGlobalResource;
ExReleaseResourceLite(&FspDeviceGlobalResource);
}
#define FspFsvolDeviceStoppedStatus(DeviceObject)\
STATUS_VOLUME_DISMOUNTED
//(FILE_DEVICE_DISK_FILE_SYSTEM == (DeviceObject)->DeviceType ?\
@ -1021,6 +1032,7 @@ extern FAST_IO_DISPATCH FspFastIoDispatch;
extern CACHE_MANAGER_CALLBACKS FspCacheManagerCallbacks;
extern FSP_IOPREP_DISPATCH *FspIopPrepareFunction[];
extern FSP_IOCMPL_DISPATCH *FspIopCompleteFunction[];
extern ERESOURCE FspDeviceGlobalResource;
extern WCHAR FspFileDescDirectoryPatternMatchAll[];
extern FSP_MV_CcCoherencyFlushAndPurgeCache *FspMvCcCoherencyFlushAndPurgeCache;