// ntifs.h

typedef enum _FS_BPIO_OUTFLAGS {
  FSBPIO_OUTFL_None,
  FSBPIO_OUTFL_VOLUME_STACK_BYPASS_PAUSED,
  FSBPIO_OUTFL_STREAM_BYPASS_PAUSED,
  FSBPIO_OUTFL_FILTER_ATTACH_BLOCKED,
  FSBPIO_OUTFL_COMPATIBLE_STORAGE_DRIVER
} FS_BPIO_OUTFLAGS;
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Windows Driver Kit DDI reference (ne-ntifs-fs_bpio_outflags)

Description

FS_BPIO_OUTFLAGS defines the BypassIO output flags for the FSCTL_MANAGE_BYPASS_IO control code.

Constants

`FSBPIO_OUTFL_None`

No output flag(s) are set.

`FSBPIO_OUTFL_VOLUME_STACK_BYPASS_PAUSED`

When set, indicates that ByPassIO has been temporarily paused for this volume per a FS_BPIO_OP_VOLUME_STACK_PAUSE operation request.

`FSBPIO_OUTFL_STREAM_BYPASS_PAUSED`

When set, indicates that BypassIO has been temporarily paused for this stream per a FS_BPIO_OP_STREAM_PAUSE operation request.

`FSBPIO_OUTFL_FILTER_ATTACH_BLOCKED`

When set, indicates that a minifilter has attached to this volume whose supported features state indicates that it does not support BypassIO. All BypassIO is blocked on this volume.

`FSBPIO_OUTFL_COMPATIBLE_STORAGE_DRIVER`

When set, indicates that the storage driver for this volume is BypassIO-compatible. This flag is defined only for FS_BPIO_OP_ENABLE, FS_BPIO_OP_QUERY, and FS_BPIO_OP_GET_INFO operations.

Remarks

See BypassIO for filter drivers for more information.

FS_BPIO_OUTFLAGS - NtDoc