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Is there a way to get the full path to a registry key from its handle?

Don_Burn_1Don_Burn_1 Member Posts: 4,311
I have the situation where I have a handle to a registry key
and am looking to get back the full path to it. ZwQueryKey
just returns the key name, not the hive it is in and the other
related data. Regmon does this by caching paths, but I have
need to get the path without caching all the data.

Any ideas?

Don Burn
NT Device Driver and Filesystem Consulting

Comments

  • OSR_Community_UserOSR_Community_User Member Posts: 110,217
    Hello,

    Use ZwQueryObject with information class 1. The
    returned buffer is a UNICODE_STRING containing the
    complete path of the object. Passing the registry
    handle will return complete path of the registry key.
    Note that: it will be in the format

    \REGISTRY\MACHINE... or \REGISTRY\USER\....

    You need to map it to top level registry keys such as
    HKEY_LOCAL_MACHINE, HKEY_CURRENT_USER etc.

    -Prasad

    --- Don Burn <[email protected]> wrote:
    > I have the situation where I have a handle to a
    > registry key
    > and am looking to get back the full path to it.
    > ZwQueryKey
    > just returns the key name, not the hive it is in and
    > the other
    > related data. Regmon does this by caching paths,
    > but I have
    > need to get the path without caching all the data.
    >
    > Any ideas?
    >
    > Don Burn
    > NT Device Driver and Filesystem Consulting
    >
    >
    >
    >
    >
    >
    >
    > ---
    > You are currently subscribed to ntdev as:
    > [email protected]
    > To unsubscribe send a blank email to
    > $subst('Email.Unsub')
    >
    >

    =====
    Prasad S. Dabak
    Director of Engineering, Windows NT/2000 Division
    Cybermedia Software Private Limited
    http://www.cybermedia.co.in
    Co-author of the book "Undocumented Windows NT"
    ISBN 0764545698

    __________________________________________________
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