SHUFFLE_FILE_DATA structure (ntifs.h)
SHUFFLE_FILE_DATA is the input structure for the FSCTL_SHUFFLE_FILE control code.
Syntax
typedef struct _SHUFFLE_FILE_DATA {
LONGLONG StartingOffset;
LONGLONG Length;
ULONG Flags;
} SHUFFLE_FILE_DATA, *PSHUFFLE_FILE_DATA;
Members
StartingOffset
Cluster-aligned byte offset of the base of the contiguous region from which to add or remove data in the file passed with the FS control code.
Length
Cluster-aligned length in bytes of the data to be added or removed. Length can be one of the following values.
| Value | Meaning |
|---|---|
| Greater than 0 | Add the allocation to the file. |
| Less than 0 | Remove the allocation from the file. |
| 0 | Do nothing. |
Flags
Bitwise OR of flags for the shuffle operation. Flags be the following value.
| Value | Meaning |
|---|---|
| SHUFFLE_FILE_FLAG_SKIP_INITIALIZING_NEW_CLUSTERS (0x001) | Valid only when adding allocation. When set, free clusters are allocated and added but have arbitrary initial contents (they are not zero-initialized). |
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 10, version 1809 |
| Header | ntifs.h |