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GetVolumeNameForVolumeMountPoint function

Retrieves a volume GUID path for the volume that is associated with the specified volume mount point (drive letter, volume GUID path, or mounted folder).

Syntax

Copy

BOOL WINAPI GetVolumeNameForVolumeMountPoint(
  __in   LPCTSTR lpszVolumeMountPoint,
  __out  LPTSTR lpszVolumeName,
  __in   DWORD cchBufferLength
);

Parameters

lpszVolumeMountPoint [in]: A pointer to a string that contains the path of a mounted folder (for example, Y:\MountX\) or a drive letter (for example, X:\). The string must end with a trailing backslash ('\').
lpszVolumeName [out]: A pointer to a string that receives the volume GUID path. This path is of the form "\\?\Volume{GUID}\" where GUID is a GUID that identifies the volume. If there is more than one volume GUID path for the volume, only the first one in the mount manager's cache is returned.
cchBufferLength [in]: The length of the output buffer, in TCHARs. A reasonable size for the buffer to accommodate the largest possible volume GUID path is 50 characters.

Return value

If the function succeeds, the return value is nonzero.

If the function fails, the return value is zero. To get extended error information, call GetLastError.

Remarks

Use GetVolumeNameForVolumeMountPoint to obtain a volume GUID path for use with functions such as SetVolumeMountPoint and FindFirstVolumeMountPoint that require a volume GUID path as an input parameter. For more information about volume GUID paths, see Naming A Volume.

Requirements

Minimum supported client	Windows XP
Minimum supported server	Windows Server 2003
Header	WinBase.h (include Windows.h)
Library	Kernel32.lib
DLL	Kernel32.dll
Unicode and ANSI names	GetVolumeNameForVolumeMountPointW (Unicode) and GetVolumeNameForVolumeMountPointA (ANSI)

An undocumented feature of this function is that it can be used to map a device interface path to a volume name. A device interface path takes the form of:
\\?\STORAGE#RemovableMedia#7&3226b304&0&RM#{53f5630d-b6bf-11d0-94f2-00a0c91efb8b}

To use this feature, add trailing slash '\' to the device interface path and pas it instead of the mount point (in lpszVolumeMountPoint).

This feature can be used to map a volume device node to its mount point(s):
1. Find the volume device by looking for devices implementing GUID_DEVINTERFACE_VOLUME with SetupDiGetClassDevs(..., DIGCF_DEVICEINTERFACE) or by receiving PnP notifications (see RegisterDeviceNotificationW).
2. With PnP notifications, you should already have the device interface path. With SetupDi..., you should get it through SetupDiGetDeviceInterfaceDetail or the CM API (CM_Get_Device_Interface_List_SizeW).
3. Pass it to GetVolumeNameForVolumeMountPoint.
4. Use GetVolumePathNamesForVolumeName.

NOTE: This feature doesn't work for USB devices

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