FSD_VOLUME_INFO (Windows CE 5.0)

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This structure is used with the FSD function MyFSD_GetVolumeInfo to report information to the OS through various flags. The storage manager uses the data returned by this function in the FSD_VOLUME_INFO structure to report file system information to applications via CeGetVolumeInfo.

typedef struct _FSD_VOLUME_INFO {
    DWORD cbSize;
    DWORD dwFSVersion ; 
    TCHAR szFSDDesc[MAX_FSD_DESCRIPTOR];
    TCHAR szFSDSubType[MAX_FSD_DESCRIPTOR];
    DWORD dwAttributes;
    DWORD dwBlockSize;
    DWORD dwFlags;
} FSD_VOLUME_INFO, *PFSD_VOLUME_INFO;

Members

• cbSize
  Set to sizeof(FSD_VOLUME_INFO).

• dwFSVersion
  Version that this file system driver (FSD) conforms to. This value must be one of the defines above

• szFSDDesc
  Currently ignored. FSD name, such as FAT or UDFS.

• szFSDSubType
  Currently ignored. Subtype of the FSD, if applicable, such as FAT12, FAT16, or FAT32.

• dwAttributes
  Bitmask containing file system attribute values. The following table shows possible values:

  Value	Description
  FSD_ATTRIBUTE_READONLY	Added to FSD_VOLUME_INFO.dwAttributes when the volume is read only.
  FSD_ATTRIBUTE_XIP	Added to FSD_VOLUME_INFO.dwAttributes when the volume supports XIP from the file system.

• dwBlockSize
  Optimal block size for I/O operations. For FAT, this would be cluster size.

• dwFlags
  Information values.

  The following table shows possible values for dwFlags.

  Flag	Value	Description
  FSD_FLAG_TRANSACTION_SAFE	0x1	Indicates the volume supports transaction safe operations. This indicates that the file system meta-data will not become corrupt due to power loss.
  FSD_FLAG_TRANSACT_WRITES	0x2	Indicates that the volume supports transaction-safe WriteFile operations. This indicates that the file system meta-data will not become corrupt due to power loss.
  FSD_FLAG_WFSC_SUPPORTED	0x4	Indicates the FSD supports FSD_WriteFileGather and FSD_ReadFileScatter.
  FSD_FLAG_LOCKFILE_SUPPORTED	0x8	Indicates the FSD supports FSD_LockFileEx and FSD_UnlockFileEx.
  FSD_FLAG_NETWORK	0x10	Indicates the FSD is a network file system.

Requirements

OS Versions: Windows CE 2.10 and later.
Header: Fsdmgr.h.

See Also

MyFSD_GetVolumeInfo

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