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QUERY_ON_CREATE_FILE_LX_INFORMATION structure (ntifs.h)

  • Article

The QUERY_ON_CREATE_FILE_LX_INFORMATION structure is used to write a file's Linux metadata extended attributes when FltRequestFileInfoOnCreateCompletion is called with the QoCFileLxInformation flag set in the InfoClassFlags parameter.

Syntax

typedef struct _QUERY_ON_CREATE_FILE_LX_INFORMATION {
  ACCESS_MASK EffectiveAccess;
  ULONG       LxFlags;
  ULONG       LxUid;
  ULONG       LxGid;
  ULONG       LxMode;
  ULONG       LxDeviceIdMajor;
  ULONG       LxDeviceIdMinor;
} QUERY_ON_CREATE_FILE_LX_INFORMATION, *PQUERY_ON_CREATE_FILE_LX_INFORMATION;

Members

EffectiveAccess

The access rights of the file.

LxFlags

The flags associated with FILE_STAT_LX_INFORMATION that specify which metadata fields are present in the file. Can be a bit mask of the following values:

Flag Value
LX_FILE_METADATA_HAS_UID (0x1) The file has a user ID.
LX_FILE_METADATA_HAS_GID (0x2) The file has a group ID.
LX_FILE_METADATA_HAS_MODE (0x4) The file has mode information.
LX_FILE_METADATA_HAS_DEVICE_ID (0x8) The file has a device ID.
LX_FILE_CASE_SENSITIVE_DIR (0x10) The directory has case sensitivity information.

LxUid

The user ID of the file.

LxGid

The group ID of the file.

LxMode

The Linux file type and file system permissions. These values are defined in sys/stat.h in the Windows SDK. See FILE_STAT_LX_INFORMATION for more information.

LxDeviceIdMajor

For device files (_S_IFCHR or S_IFBLK), specifies the device major number. For other file types, this field is not used.

LxDeviceIdMinor

For device files (_S_IFCHR or S_IFBLK), specifies the device minor number. For other file types, this field is not used.

Remarks

The file system allocates this structure and fills in the requested information, if supported, while it processes a file create. Filter Manager will free the allocated structure.

Requirements

Requirement Value
Minimum supported client Windows 10, version 1809
Header ntifs.h

See also

FILE_STAT_LX_INFORMATION

FltRequestFileInfoOnCreateCompletion

FltRetrieveFileInfoOnCreateCompletionEx