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Major refactoring: IRP_MJ_CREATE

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This commit is contained in:
Bill Zissimopoulos
2015-12-24 15:46:54 -08:00
parent 1bd9c09d22
commit e3c04e15ba
3 changed files with 126 additions and 55 deletions
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73
src/sys/driver.h
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@ -456,6 +456,7 @@ typedef struct
ERESOURCE Resource;
ERESOURCE PagingIoResource;
FAST_MUTEX HeaderFastMutex;
SECTION_OBJECT_POINTERS SectionObjectPointers;
} FSP_FILE_CONTEXT_NONPAGED;
typedef struct
{
@ -463,34 +464,38 @@ typedef struct
FSP_FILE_CONTEXT_NONPAGED *NonPaged;
/* interlocked access */
LONG RefCount;
#if 0
/* protected by Header.Resource */
LONG OpenCount;
SHARE_ACCESS ShareAccess;
BOOLEAN DeletePending; /* FileDispositionInformation */
BOOLEAN DeleteOnClose; /* FILE_DELETE_ON_CLOSE */
FSP_DEVICE_GENERIC_TABLE_ELEMENT ElementStorage;
UINT64 UserContext;
#endif
/* read-only after creation */
/* read-only after creation (and insertion in the GenericTable) */
PDEVICE_OBJECT FsvolDeviceObject;
UINT64 UserContext;
FSP_DEVICE_GENERIC_TABLE_ELEMENT ElementStorage;
UNICODE_STRING FileName;
WCHAR FileNameBuf[];
} FSP_FILE_CONTEXT;
NTSTATUS FspFileContextCreate(PDEVICE_OBJECT DeviceObject,
ULONG ExtraSize, FSP_FILE_CONTEXT **PFsContext);
VOID FspFileContextDelete(FSP_FILE_CONTEXT *Context);
VOID FspFileContextDelete(FSP_FILE_CONTEXT *FsContext);
static inline
VOID FspFileContextRetain(FSP_FILE_CONTEXT *Context)
VOID FspFileContextRetain(FSP_FILE_CONTEXT *FsContext)
{
InterlockedIncrement(&Context->RefCount);
InterlockedIncrement(&FsContext->RefCount);
}
static inline
VOID FspFileContextRelease(FSP_FILE_CONTEXT *Context)
VOID FspFileContextRelease(FSP_FILE_CONTEXT *FsContext)
{
LONG RefCount = InterlockedDecrement(&Context->RefCount);
LONG RefCount = InterlockedDecrement(&FsContext->RefCount);
if (0 == RefCount)
FspFileContextDelete(Context);
FspFileContextDelete(FsContext);
}
static inline
VOID FspFileContextOpen(FSP_FILE_CONTEXT *FsContext)
{
InterlockedIncrement(&FsContext->OpenCount);
}
static inline
LONG FspFileContextClose(FSP_FILE_CONTEXT *FsContext)
{
return InterlockedDecrement(&FsContext->OpenCount);
}
/* debug */
@ -508,42 +513,4 @@ extern PDEVICE_OBJECT FspFsctlNetDeviceObject;
extern FSP_IOPREP_DISPATCH *FspIopPrepareFunction[];
extern FSP_IOCMPL_DISPATCH *FspIopCompleteFunction[];
#if 0
typedef struct
{
FSRTL_ADVANCED_FCB_HEADER Header;
FSP_FILE_CONTEXT_NONPAGED *NonPaged;
/* interlocked access */
LONG RefCount;
/* protected by Header.Resource */
LONG OpenCount;
SHARE_ACCESS ShareAccess;
BOOLEAN DeletePending; /* FileDispositionInformation */
BOOLEAN DeleteOnClose; /* FILE_DELETE_ON_CLOSE */
/* read-only after creation */
FSP_DEVICE_GENERIC_TABLE_ELEMENT ElementStorage;
PDEVICE_OBJECT FsvolDeviceObject;
UINT64 UserContext;
UNICODE_STRING FileName;
WCHAR FileNameBuf[];
} FSP_FILE_CONTEXT;
NTSTATUS FspFileContextCreate(PDEVICE_OBJECT DeviceObject,
ULONG ExtraSize, FSP_FILE_CONTEXT **PFsContext);
VOID FspFileContextDelete(FSP_FILE_CONTEXT *Context);
static inline
VOID FspFileContextOpen(FSP_FILE_CONTEXT *Context)
{
ASSERT(0 == Context->OpenCount || ExIsResourceAcquiredExclusiveLite(Context->Header.Resource));
Context->OpenCount++;
}
static inline
LONG FspFileContextClose(FSP_FILE_CONTEXT *Context)
{
ASSERT(ExIsResourceAcquiredExclusiveLite(Context->Header.Resource));
ASSERT(0 < Context->OpenCount);
return --Context->OpenCount;
}
#endif
#endif