Libguestfs - Aug 2020 - [PATCH] Increase HIVEX_MAX_VALUES

Hello,

As we discussed briefly on IRC about a month ago, HKLM\SYSTEM\MountedDevices can
contain greater than 55000 (HIVEX_MAX_VALUES) values if VMWare’s snapshot
functionality is frequently used. This is due to an unintended interaction
between Windows and VMWare’s snapshot functionality.

VMware has a knowledge base article regarding this issue, although it does not
directly mention MountedDevices: https://kb.vmware.com/s/article/2006849

The attached patch increases HIVEX_MAX_VALUES in order to enable access to those
hives with hivex.

-- 
Matt Coleman
Senior Software Engineer
Datto, Inc.
www.datto.com

On Thu, Aug 13, 2020 at 08:55:14PM -0400, Matt Coleman
wrote:
> Hello,
> 
> As we discussed briefly on IRC about a month ago,
HKLM\SYSTEM\MountedDevices can contain greater than 55000 (HIVEX_MAX_VALUES)
values if VMWare’s snapshot functionality is frequently used. This is due to an
unintended interaction between Windows and VMWare’s snapshot functionality.
> 
> VMware has a knowledge base article regarding this issue, although it does
not directly mention MountedDevices: https://kb.vmware.com/s/article/2006849
> 
> The attached patch increases HIVEX_MAX_VALUES in order to enable access to
those hives with hivex.
Applied, thanks!

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming and virtualization blog: http://rwmj.wordpress.com
libguestfs lets you edit virtual machines.  Supports shell scripting,
bindings from many languages.  http://libguestfs.org