Undocumented functions of NTDLL

2OO1, 2O January



FILE_FS_SIZE_INFORMATION
FILE_FS_SIZE_INFORMATION

typedef struct _FILE_FS_SIZE_INFORMATION {


  LARGE_INTEGER           TotalAllocationUnits;
  LARGE_INTEGER           AvailableAllocationUnits;
  ULONG                   SectorsPerAllocationUnit;
  ULONG                   BytesPerSector;


} FILE_FS_SIZE_INFORMATION, *PFILE_FS_SIZE_INFORMATION;



Structure provides detailed information about volume physical size. Is returned in call to NtQueryVolumeInformationFile with FileFsSizeInformation information class.
  • TotalAllocationUnits
    •     
  • AvailableAllocationUnits
    •     
  • SectorsPerAllocationUnit
    •     
  • BytesPerSector
    •     


    Documented by:
    Bo Branten
    Tomasz Nowak



    Requirements:
    Library: ntdll.lib


    See also:
    FS_INFORMATION_CLASS
    NtQueryVolumeInformationFile