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sys: fsmup device

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- This commit introduces the fsmup device, which is a major change in how
network file systems are handled. Previously every network file system's
fsvol device was directly registered with the MUP. Now there is a single
fsmup device that is registered with the MUP; network file systems' fsvol
devices register with fsmup instead. The fsmup device maintains a prefix
table which it uses to demultiplex and forward requests to the appropriate
fsvol device.
- This device change was necessatitated to fix issue #87.
This commit is contained in:
Bill Zissimopoulos
2018-01-16 10:38:52 -08:00
parent 670a38d549
commit a4629b8f8b
12 changed files with 435 additions and 168 deletions
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32
src/sys/driver.h
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@ -180,6 +180,8 @@ VOID FspDebugLogIrp(const char *func, PIRP Irp, NTSTATUS Result);
#define FSP_LEAVE_DRV(fmt, ...) \
FSP_LEAVE_(FSP_DEBUGLOG_(fmt, " = %s", __VA_ARGS__, NtStatusSym(Result))); return Result
#define FSP_ENTER_MJ(...) \
if (FspFsmupDeviceExtensionKind == FspDeviceExtension(DeviceObject)->Kind)\
return FspMupHandleIrp(DeviceObject, Irp);\
NTSTATUS Result = STATUS_SUCCESS; \
PIO_STACK_LOCATION IrpSp = IoGetCurrentIrpStackLocation(Irp);\
BOOLEAN fsp_device_deref = FALSE; \
@ -328,7 +330,6 @@ FSP_IOPREP_DISPATCH FspFsvolSetInformationPrepare;
FSP_IOCMPL_DISPATCH FspFsvolSetInformationComplete;
FSP_IOCMPL_DISPATCH FspFsvolSetSecurityComplete;
FSP_IOCMPL_DISPATCH FspFsvolSetVolumeInformationComplete;
FSP_IOCMPL_DISPATCH FspFsvolShutdownComplete;
FSP_IOPREP_DISPATCH FspFsvolWritePrepare;
FSP_IOCMPL_DISPATCH FspFsvolWriteComplete;
@ -1007,6 +1008,7 @@ typedef struct
enum
{
FspFsctlDeviceExtensionKind = '\0ltC', /* file system control device (e.g. \Device\WinFsp.Disk) */
FspFsmupDeviceExtensionKind = '\0puM', /* our own MUP device (linked to \Device\WinFsp.Mup) */
FspFsvrtDeviceExtensionKind = '\0trV', /* virtual volume device (e.g. \Device\Volume{GUID}) */
FspFsvolDeviceExtensionKind = '\0loV', /* file system volume device (unnamed) */
};
@ -1023,11 +1025,12 @@ typedef struct
InitDoneCtxTab:1, InitDoneTimer:1, InitDoneInfo:1, InitDoneNotify:1, InitDoneStat:1;
PDEVICE_OBJECT FsctlDeviceObject;
PDEVICE_OBJECT FsvrtDeviceObject;
HANDLE MupHandle;
PDEVICE_OBJECT FsvolDeviceObject;
PVPB SwapVpb;
FSP_DELAYED_WORK_ITEM DeleteVolumeDelayedWorkItem;
FSP_FSCTL_VOLUME_PARAMS VolumeParams;
UNICODE_STRING VolumePrefix;
UNICODE_PREFIX_TABLE_ENTRY VolumePrefixEntry;
FSP_IOQ *Ioq;
FSP_META_CACHE *SecurityCache;
FSP_META_CACHE *DirInfoCache;
@ -1049,6 +1052,13 @@ typedef struct
LIST_ENTRY NotifyList;
FSP_STATISTICS *Statistics;
} FSP_FSVOL_DEVICE_EXTENSION;
typedef struct
{
FSP_DEVICE_EXTENSION Base;
UINT32 InitDonePfxTab:1;
ERESOURCE PrefixTableResource;
UNICODE_PREFIX_TABLE PrefixTable;
} FSP_FSMUP_DEVICE_EXTENSION;
static inline
FSP_DEVICE_EXTENSION *FspDeviceExtension(PDEVICE_OBJECT DeviceObject)
{
@ -1060,6 +1070,12 @@ FSP_FSVOL_DEVICE_EXTENSION *FspFsvolDeviceExtension(PDEVICE_OBJECT DeviceObject)
ASSERT(FspFsvolDeviceExtensionKind == ((FSP_DEVICE_EXTENSION *)DeviceObject->DeviceExtension)->Kind);
return DeviceObject->DeviceExtension;
}
static inline
FSP_FSMUP_DEVICE_EXTENSION *FspFsmupDeviceExtension(PDEVICE_OBJECT DeviceObject)
{
ASSERT(FspFsmupDeviceExtensionKind == ((FSP_DEVICE_EXTENSION *)DeviceObject->DeviceExtension)->Kind);
return DeviceObject->DeviceExtension;
}
NTSTATUS FspDeviceCreateSecure(UINT32 Kind, ULONG ExtraSize,
PUNICODE_STRING DeviceName, DEVICE_TYPE DeviceType, ULONG DeviceCharacteristics,
PUNICODE_STRING DeviceSddl, LPCGUID DeviceClassGuid,
@ -1156,6 +1172,14 @@ BOOLEAN FspQueryDirectoryIrpShouldUseProcessBuffer(PIRP Irp, SIZE_T BufferSize)
}
#endif
/* fsmup */
BOOLEAN FspMupRegister(
PDEVICE_OBJECT FsmupDeviceObject, PDEVICE_OBJECT FsvolDeviceObject);
VOID FspMupUnregister(
PDEVICE_OBJECT FsmupDeviceObject, PDEVICE_OBJECT FsvolDeviceObject);
NTSTATUS FspMupHandleIrp(
PDEVICE_OBJECT FsmupDeviceObject, PIRP Irp);
/* volume management */
#define FspVolumeTransactEarlyTimeout (1 * 10000ULL)
NTSTATUS FspVolumeCreate(
@ -1164,8 +1188,6 @@ VOID FspVolumeDelete(
PDEVICE_OBJECT FsctlDeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp);
NTSTATUS FspVolumeMount(
PDEVICE_OBJECT FsctlDeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp);
NTSTATUS FspVolumeRedirQueryPathEx(
PDEVICE_OBJECT FsvolDeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp);
NTSTATUS FspVolumeGetName(
PDEVICE_OBJECT FsctlDeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp);
NTSTATUS FspVolumeGetNameList(
@ -1559,6 +1581,8 @@ FSP_MV_CcCoherencyFlushAndPurgeCache(
extern PDRIVER_OBJECT FspDriverObject;
extern PDEVICE_OBJECT FspFsctlDiskDeviceObject;
extern PDEVICE_OBJECT FspFsctlNetDeviceObject;
extern PDEVICE_OBJECT FspFsmupDeviceObject;
extern HANDLE FspMupHandle;
extern FAST_IO_DISPATCH FspFastIoDispatch;
extern CACHE_MANAGER_CALLBACKS FspCacheManagerCallbacks;
extern FSP_IOPREP_DISPATCH *FspIopPrepareFunction[];