OSR's ntfsd List: Getting Drive Letter from Device name

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02 Jun 03 06:34

ntfsd member 11187

xxxxxx@indiatimes.com

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Getting Drive Letter from Device name

I have written file system filter driver based on sfilter. In the IRP_MN_MOUNT_VOLUME i get the device name in the form of "\Device\CdRom0". now i want to get the drive letter for this device. how do i go about. i tried ZwOpenSymbolicLinkObject and ZwQuerySymbolicLinkObject. But ZwQuerySymbolicLinkObject fails with error STATUS_OBJECT_TYPE_MISMATCH. Any help would be appreciated. Thanks....

Message 2 of 5

02 Jun 03 07:09

Swati Chawdhary

xxxxxx@divassoftware.com

Join Date: 20 Feb 2003

Posts To This List: 11

Re: Getting Drive Letter from Device name

Check Out the Device Extention structure in FileSpy!

Message 3 of 5

02 Jun 03 13:39

ntfsd member 8262

xxxxxx@nryan.com

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RE: Getting Drive Letter from Device name

Rtl/IoVolumeDeviceToDosName on the storage device object. - Nick Ryan > -----Original Message----- > From: xxxxx@lists.osr.com > [mailto:xxxxx@lists.osr.com] On Behalf Of > xxxxx@indiatimes.com > Sent: Monday, June 02, 2003 3:34 AM > To: File Systems Developers > Subject: [ntfsd] Getting Drive Letter from Device name > > > I have written file system filter driver based on sfilter. <...excess quoted lines suppressed...>

Message 4 of 5

03 Jun 03 01:43

ntfsd member 11187

xxxxxx@indiatimes.com

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RE: Getting Drive Letter from Device name

Thanks a lot.... it did work .. :) > Rtl/IoVolumeDeviceToDosName on the storage device object. > > - Nick Ryan > > > -----Original Message----- > > From: xxxxx@lists.osr.com > > [mailto:xxxxx@lists.osr.com] On Behalf Of > > xxxxx@indiatimes.com > > Sent: Monday, June 02, 2003 3:34 AM > > To: File Systems Developers <...excess quoted lines suppressed...>

Message 5 of 5

03 Jun 03 23:33

ntfsd member 1814

xxxxxx@pmail.ntu.edu.sg

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RE: Getting Drive Letter from Device name

hi, i used this function in create and it works most of the time. however, the function seems to hang when i plug in a usb harddisk. when is the safe time to use this function? Ampsi ----- Original Message ----- From: "Nick Ryan" <xxxxx@nryan.com> To: "File Systems Developers" <xxxxx@lists.osr.com> Sent: Tuesday, June 03, 2003 01:40 Subject: [ntfsd] RE: Getting Drive Letter from Device name Rtl/IoVolumeDeviceToDosName on the storage device object. - Nick Ryan > -----Original Message----- > From: xxxxx@lists.osr.com > [mailto:xxxxx@lists.osr.com] On Behalf Of > xxxxx@indiatimes.com > Sent: Monday, June 02, 2003 3:34 AM > To: File Systems Developers > Subject: [ntfsd] Getting Drive Letter from Device name > > > I have written file system filter driver based on sfilter. <...excess quoted lines suppressed...> --- You are currently subscribed to ntfsd as: xxxxx@pmail.ntu.edu.sg To unsubscribe send a blank email to xxxxx@lists.osr.com

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