how to get the volume information in kernel driver

NTFSD
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hello everyone:

Could you tell me how to get the volume information in kernel driver?
I just do as blow,but get nothing:
pIrpStack->Parameters.QueryVolume.FsInformationClass = FileFsVolumeInformation ;  
PFILE_FS_VOLUME_INFORMATION volumeInfo = (FILE_FS_VOLUME_INFORMATION*)Irp->AssociatedIrp.SystemBuffer ;

 

I want to user the member of VolumeSerialNumber in PFILE_FS_VOLUME_INFORMATION struct .

thanks very much!
cliicy
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2

QueryVolume has a second field - Length, which tells file system how big the output buffer is.

Alexei.
“Luo cliicy” wrote in message news:xxxxx@ntfsd…
hello everyone:
Could you tell me how to get the volume information in kernel driver?
I just do as blow,but get nothing:
pIrpStack->Parameters.QueryVolume.FsInformationClass = FileFsVolumeInformation ;
PFILE_FS_VOLUME_INFORMATION volumeInfo = (FILE_FS_VOLUME_INFORMATION*)Irp->AssociatedIrp.SystemBuffer ;

I want to user the member of VolumeSerialNumber in PFILE_FS_VOLUME_INFORMATION struct .

thanks very much!
cliicy

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