[libvirt] [PATCH 2/7] Add accessors for logging filters and outputs

[Daniel P. Berrange]

On Wed, Oct 07, 2009 at 03:34:38PM -0400, Amy Griffis wrote:
> Daniel P. Berrange wrote:  [Tue Oct 06 2009, 05:00:55AM EDT]
> > > > Having looked at the wway the next patch uses these, I think it'd be
> > > > nicer to change the contract to just be
> > > > 
> > > >    extern char *virLogGetFilters(void);
> > > >    extern char *virLogGetOutputs(void);
> > > 
> > > Heh, that's how I wrote it the first time. Then I changed it to
> > > make use of the virBuffer API, and tried to follow precedent with
> > > the rest of libvirt. The code is not really doing much with the
> > > string, maybe virBuffer is overkill?
> > 
> > The general rule to try & follow is that if you just have a single
> > printf style call to make, then use  virAsprintf. If you have several
> > printf/strcat calls to make, then use virBuffer. 
> > 
> > In this particular case, its fine to use virBuffer for your internal
> > impl - I just thing its better to not include it in the public API,
> > convert the virBuffer into a char * for the return value
> 
> That makes sense. Does this look good now?
> 
> ---
> 
> When configuring logging settings, keep more information about the
> output destination. Add accessors to retrieve the filter and output
> settings in the original string form; this to be used to set up
> environment for a child process that also logs. Open output files
> O_APPEND so child can also write -- was there a reason to truncate
> them?
> 
> Note this patch changes the API for virLogDefineOutput(), which is
> part of the internal libvirt API, but is currently only used within
> logging.c.
> ---
> 
>  src/libvirt_private.syms |    2 +
>  src/util/logging.c       |  112 +++++++++++++++++++++++++++++++++++++++++++---
>  src/util/logging.h       |   14 +++++-
>  3 files changed, 119 insertions(+), 9 deletions(-)

ACK, this looks good to me.

Daniel
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