[libvirt] [PATCH] Unify most error reporting (ver 2)

Daniel P. Berrange berrange at redhat.com
Wed Oct 8 19:35:38 UTC 2008

On Wed, Oct 08, 2008 at 02:17:45PM -0400, Cole Robinson wrote:
> The attached patch is a more complete cut at unifying
> error reporting among the different source files.
> Most files have their own custom Error function, each
> with varying degrees of functionality, and lots of
> code duplication.
> The attached patch adds a helper function to virterror.c
> that centralizes all this logic, and redefines each
> local error function as a macro that calls out to
> the helper. The fixed files now offer printf style
> reporting, and the macros pass off function name,
> file name, and line number of the reported error 
> (currently not used, but handy to have).
> This change centralizes probably 90% of the error calls.
> Some files have pretty custom error functions that
> don't map easily to the helper, or call __virRaiseError
> directly in a number of places, so I skipped these for
> now. Eventually we should move all these edge cases over
> so any src/ wide error changes will be pretty easy to
> make.


> The one thing we lose here is that some some places
> were logging info in the err{1,2,3} and int{1,2} fields
> of raised error. I don't consider this a loss: even
> where it was used, it was used inconsistently and
> rarely for anything that would be useful to a user.
> In the places where the data had some value, I
> included it in the error string.

Agreed - it had no documented use either.

> One side question: is src/xmlrpc.{c,h} even used? And
> if not, can it be removed?

It is not used at this time. It was for the hypothetical
alternative Xen driver which talks XML-RPC which we never
got around to writing. Perhaps it really is time to kill
it -we can get it back from CVS if ever required.

ACK to this patch

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