// ntifs.h

typedef struct _FILE_PROVIDER_EXTERNAL_INFO_V0 {
  ULONG Version;
  ULONG Algorithm;
} FILE_PROVIDER_EXTERNAL_INFO_V0, *PFILE_PROVIDER_EXTERNAL_INFO_V0;
View the official Windows Driver Kit DDI reference

NtDoc

No description available.

Edit description on GitHub

Windows Driver Kit DDI reference (ns-ntifs-_file_provider_external_info_v0)

FILE_PROVIDER_EXTERNAL_INFO_V0 structure

Description

This structure may be altered or unavailable. Instead, use FILE_PROVIDER_EXTERNAL_INFO_V1.

Members

`Version`

The version of the provider to use. Specify FILE_PROVIDER_CURRENT_VERSION.

`Algorithm`

Specifies the compression algorithm that is used to compress this file. Currently defined algorithms are:

Algorithm	Description
FILE_PROVIDER_COMPRESSION_XPRESS4K	The data for the file should be compressed in 4kb chunks with the XPress algorithm. This algorithm is designed to be computationally lightweight, and provides for rapid access to data.
FILE_PROVIDER_COMPRESSION_LZX	The data for the file should be compressed in 32kb chunks with the LZX algorithm. This algorithm is designed to be highly compact, and provides for small footprint for infrequently accessed data.
FILE_PROVIDER_COMPRESSION_XPRESS8K	The data for the file should be compressed in 8kb chunks with the XPress algorithm.
FILE_PROVIDER_COMPRESSION_XPRESS16K	The data for the file should be compressed in 16kb chunks with the XPress algorithm.

FILE_PROVIDER_EXTERNAL_INFO_V0 - NtDoc