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The following control codes are used with file compression and decompression.
| Control Code | Meaning |
|---|---|
| FSCTL_GET_COMPRESSION | Retrieves the current compression state of a file or directory on a volume whose file system supports per-stream compression. |
| FSCTL_SET_COMPRESSION | Sets the compression state of a file or directory on a volume whose file system supports per-file and per-directory compression. |
The following control codes are used with reparse points.
In this section
| Control Code | Description |
|---|---|
| FSCTL_DELETE_REPARSE_POINT |
Deletes a reparse point from the specified file or directory. |
| FSCTL_GET_REPARSE_POINT |
Retrieves the reparse point data associated with the file or directory identified by the specified handle. |
| FSCTL_SET_REPARSE_POINT |
Sets a reparse point on a file or directory. |