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sys: decide on device hierarchy: fsctl, fsvrt, fsvol

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This commit is contained in:
Bill Zissimopoulos
2015-11-20 23:39:20 -08:00
parent 4d910c7fa8
commit 93be122c91
5 changed files with 48 additions and 25 deletions
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28
src/sys/driver.h
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@ -10,7 +10,8 @@
#include <ntifs.h>
#define DRIVER_NAME "WinFsp"
#define DEVICE_NAME "WinFsp"
#define DISK_DEVICE_NAME "WinFsp.Disk"
#define NET_DEVICE_NAME "WinFsp.Net"
/* DEBUGLOG */
#if DBG
@ -100,8 +101,9 @@
/* types */
enum
{
FspFileSystemDeviceExtensionKind = 'F',
FspVolumeDeviceExtensionKind = 'V',
FspFsctlDeviceExtensionKind = 'C', /* file system control device (e.g. \Device\WinFsp.Disk) */
FspFsvrtDeviceExtensionKind = 'V', /* virtual volume device (e.g. \Device\Volume{GUID}) */
FspFsvolDeviceExtensionKind = 'F', /* file system volume device (unnamed) */
};
typedef struct
{
@ -110,23 +112,32 @@ typedef struct
typedef struct
{
FSP_DEVICE_EXTENSION Base;
} FSP_FILE_SYSTEM_DEVICE_EXTENSION;
} FSP_FSCTL_DEVICE_EXTENSION;
typedef struct
{
FSP_DEVICE_EXTENSION Base;
} FSP_VOLUME_DEVICE_EXTENSION;
} FSP_FSVRT_DEVICE_EXTENSION;
typedef struct
{
FSP_DEVICE_EXTENSION Base;
} FSP_FSVOL_DEVICE_EXTENSION;
static inline
FSP_DEVICE_EXTENSION *FspDeviceExtension(PDEVICE_OBJECT DeviceObject)
{
return DeviceObject->DeviceExtension;
}
static inline
FSP_FILE_SYSTEM_DEVICE_EXTENSION *FspFileSystemDeviceExtension(PDEVICE_OBJECT DeviceObject)
FSP_FSCTL_DEVICE_EXTENSION *FspFsctlDeviceExtension(PDEVICE_OBJECT DeviceObject)
{
return DeviceObject->DeviceExtension;
}
static inline
FSP_VOLUME_DEVICE_EXTENSION *FspVolumeDeviceExtension(PDEVICE_OBJECT DeviceObject)
FSP_FSVRT_DEVICE_EXTENSION *FspFsvrtDeviceExtension(PDEVICE_OBJECT DeviceObject)
{
return DeviceObject->DeviceExtension;
}
static inline
FSP_FSVOL_DEVICE_EXTENSION *FspFsvolDeviceExtension(PDEVICE_OBJECT DeviceObject)
{
return DeviceObject->DeviceExtension;
}
@ -172,7 +183,8 @@ const char *IrpMinorFunctionSym(UCHAR MajorFunction, UCHAR MinorFunction);
#endif
/* extern */
extern PDEVICE_OBJECT FspFileSystemDeviceObject;
extern PDEVICE_OBJECT FspFsctlDiskDeviceObject;
extern PDEVICE_OBJECT FspFsctlNetDeviceObject;
/* I/O increment */
#define FSP_IO_INCREMENT IO_NETWORK_INCREMENT