[clamav-users] Manual cdiff update

[Shawn Webb]

On Fri, Apr 25, 2014 at 8:20 PM, Arthur Snyder <snydera at yahoo.com> wrote:

> I am trying to manually update a daily.cvd file with a daily-xx.cdiff
> file.   I know I can just download the latest daily.cvd.  I know I can just
> run freshclam and update.  That is not the point.
>
> I run sigtool --verify-cdiff daily-xxx.cdiff daily.cvd and it states the
> cdiff file correctly applies.  However, if I run sigtool --run-cdiff
> daily-xxx.cdiff it states can't open file daily.info for reading.  I have
> run the commands on relatively fresh daily.cvd files so I know the file it
> good.  I run sigtool -i daily.cvd and it validates the file.  daily.cvd and
> daily-xxx.cdiff are in the same directory and I execute sigtool from the
> same directory.  Permissions are set correctly and it does not matter if I
> run the sigtool command as root or not.  It is as if the run option cannot
> locate the daily.cvd file whereas the verify function has the daily.cvd
> file specified.  It seems simple.  What am I missing?  Thank you for the
> help.
>

Hey Arthur,

Before you apply a cdiff, you have to unpack the database for which it
applies into a directory. You can follow this procedure to manually apply a
cdiff to daily (and adopt it to your circumstances, of course):

1. mkdir /tmp/cvd
2. cd /tmp/cvd
3. sigtool --unpack-current=daily
4. sigtool --apply-cdiff=/path/to/downloaded/cdiff

If you have any further questions, comments, or concerns, please let me
know.

Thanks,

Shawn