Undocumented functions of NTDLL

2OO1, 19 January


FS_INFORMATION_CLASS
FS_INFORMATION_CLASS

typedef enum _FS_INFORMATION_CLASS {




    FileFsVolumeInformation=1,
    FileFsLabelInformation,
    FileFsSizeInformation,
    FileFsDeviceInformation,
    FileFsAttributeInformation,
    FileFsControlInformation,
    FileFsFullSizeInformation,
    FileFsObjectIdInformation,
    FileFsMaximumInformation


} FS_INFORMATION_CLASS, *PFS_INFORMATION_CLASS;



FS_INFORMATION_CLASS enumeration type is used in a call to NtQueryVolumeInformationFile and NtSetVolumeInformationFile.


Action
 : Query
Buffer size  
 : 0x18
Structure
 : FILE_FS_VOLUME_INFORMATION
Action
 : Set
Buffer size  
 : 0x08
Structure
 : FILE_FS_LABEL_INFORMATION
Action
 : Query
Buffer size  
 : 0x18
Structure
 : FILE_FS_SIZE_INFORMATION
Action
 : Query
Buffer size  
 : 0x08
Structure
 : FILE_FS_DEVICE_INFORMATION
Action
 : Query
Buffer size  
 : 0x10
Structure
 : FILE_FS_ATTRIBUTE_INFORMATION
Action
 : Query, Set
Buffer size  
 : 0x30, 0x30
Structure
 : FILE_FS_CONTROL_INFORMATION
Action
 : Query
Buffer size  
 : 0x38
Structure
 : ???
Action
 : Set
Buffer size  
 : 0x38
Structure
 : ???



Documented by:
Tomasz Nowak
Bo Branten
Reactos



Requirements:
Library: ntdll.lib


See also:
FILE_FS_ATTRIBUTE_INFORMATION
FILE_FS_CONTROL_INFORMATION
FILE_FS_DEVICE_INFORMATION
FILE_FS_LABEL_INFORMATION
FILE_FS_SIZE_INFORMATION
FILE_FS_VOLUME_INFORMATION
NtQueryVolumeInformationFile
NtSetVolumeInformationFile