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sys: IRP_MJ_CREATE: refactoring to support Overwrite

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This commit is contained in:
Bill Zissimopoulos
2016-01-07 19:47:45 -08:00
parent 16895a5b68
commit a382db8b01
4 changed files with 156 additions and 44 deletions
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14
src/sys/driver.h
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@ -517,6 +517,8 @@ typedef struct
/* interlocked access */
LONG RefCount;
LONG OpenCount;
/* locked access */
SHARE_ACCESS ShareAccess;
/* read-only after creation (and insertion in the GenericTable) */
PDEVICE_OBJECT FsvolDeviceObject;
UINT64 UserContext;
@ -527,21 +529,15 @@ typedef struct
NTSTATUS FspFileContextCreate(PDEVICE_OBJECT DeviceObject,
ULONG ExtraSize, FSP_FILE_CONTEXT **PFsContext);
VOID FspFileContextDelete(FSP_FILE_CONTEXT *FsContext);
FSP_FILE_CONTEXT *FspFileContextOpen(PDEVICE_OBJECT FsvolDeviceObject,
FSP_FILE_CONTEXT *FsContext);
VOID FspFileContextClose(PDEVICE_OBJECT FsvolDeviceObject,
FSP_FILE_CONTEXT *FsContext);
FSP_FILE_CONTEXT *FspFileContextOpen(FSP_FILE_CONTEXT *FsContext, PFILE_OBJECT FileObject,
DWORD GrantedAccess, DWORD ShareAccess, NTSTATUS *PResult);
VOID FspFileContextClose(FSP_FILE_CONTEXT *FsContext, PFILE_OBJECT FileObject);
static inline
VOID FspFileContextRetain(FSP_FILE_CONTEXT *FsContext)
{
InterlockedIncrement(&FsContext->RefCount);
}
static inline
VOID FspFileContextRetain2(FSP_FILE_CONTEXT *FsContext)
{
InterlockedAdd(&FsContext->RefCount, 2);
}
static inline
VOID FspFileContextRelease(FSP_FILE_CONTEXT *FsContext)
{
LONG RefCount = InterlockedDecrement(&FsContext->RefCount);