NETWORK_OPEN_ECP_CONTEXT_V0 structure (ntifs.h)

The NETWORK_OPEN_ECP_CONTEXT_V0 structure is used to interpret network extra create parameter (ECP) contexts on files.

Syntax

typedef struct _NETWORK_OPEN_ECP_CONTEXT_V0 {
  USHORT Size;
  USHORT Reserved;
  struct {
    struct {
      NETWORK_OPEN_LOCATION_QUALIFIER  Location;
      NETWORK_OPEN_INTEGRITY_QUALIFIER Integrity;
    } in;
    struct {
      NETWORK_OPEN_LOCATION_QUALIFIER  Location;
      NETWORK_OPEN_INTEGRITY_QUALIFIER Integrity;
    } out;
  } DUMMYSTRUCTNAME;
} NETWORK_OPEN_ECP_CONTEXT_V0, *PNETWORK_OPEN_ECP_CONTEXT_V0;

Members

Size

The size, in bytes, of this structure.

Reserved

Reserved. Must be set to zero.

DUMMYSTRUCTNAME

A structure that contains restrictions to apply for opening the file (pre-create) and to apply to the file after it is opened (post-create).

DUMMYSTRUCTNAME.in

Structure that contains pre-create restrictions for opening a file.

DUMMYSTRUCTNAME.in.Location

A NETWORK_OPEN_LOCATION_QUALIFIER-typed value that specifies the location restriction to attach to the file.

DUMMYSTRUCTNAME.in.Integrity

A NETWORK_OPEN_INTEGRITY_QUALIFIER-typed value that specifies the integrity restriction to attach to the file.

DUMMYSTRUCTNAME.out

Structure that contains post-create restrictions to apply to a file after it has been opened.

DUMMYSTRUCTNAME.out.Location

A NETWORK_OPEN_LOCATION_QUALIFIER-typed value that specifies the location restriction to attach to the file.

DUMMYSTRUCTNAME.out.Integrity

This member is currently not implemented and should be ignored.

A NETWORK_OPEN_INTEGRITY_QUALIFIER-typed value that specifies the integrity restriction to attach to the file.

Remarks

For information about how to use ECPs to associate extra information with a file when the file is created, see Using Extra Create Parameters with an IRP_MJ_CREATE Operation.

A filter driver should consider the NETWORK_OPEN_ECP_CONTEXT structure to be read-only, using it only to retrieve information about the network ECP context on a file. For more information, see System-Defined ECPs.

If a caller must verify that the file system acknowledged the NETWORK_OPEN_ECP_CONTEXT_V0 context structure, the caller should call the FltIsEcpAcknowledged or FsRtlIsEcpAcknowledged routine on the ECP after the operation is complete.

In most cases, drivers that run on Windows Vista and later versions of Windows use the NETWORK_OPEN_ECP_CONTEXT structure to interpret network ECP contexts on files. However, drivers that run on Windows 7 and later versions of Windows and that must interpret network ECP contexts on files that reside on Windows Vista must use the NETWORK_OPEN_ECP_CONTEXT_V0 structure instead.

Requirements

Requirement	Value
Minimum supported client	This structure is available starting with Windows 7.
Header	ntifs.h (include Ntifs.h)

See also

FltIsEcpAcknowledged

FsRtlIsEcpAcknowledged

NETWORK_OPEN_ECP_CONTEXT

NETWORK_OPEN_INTEGRITY_QUALIFIER

NETWORK_OPEN_LOCATION_QUALIFIER