partition size

NTDEV
1

I’m trying to obtain the size of a raw partition
within a monolithic driver. I’ve tried every means i
could conceive for doing this and have failed.

  1. I tried opening the storage volume as a device, and
    send an irp. using IoBuildSynchronous IRP, and using
    IRP_MJ_DEVICE_CONTROL and the
    IOCTL_DISK_GET_PARTITION_INFO_EX code. The damn thing
    crashs with a page fault.

  2. I tried opening the partition using zwopenfile and
    then using zwqueryfileinformation. I get an error
    indicating incorrect function.

Any easy way of obtaining this information?

Rajeev

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