[libvirt] [PATCH] qemu: Improve some qemu.conf error reporting

[Daniel P. Berrange]

On Wed, Jun 30, 2010 at 04:38:36PM -0400, Cole Robinson wrote:
> Log some info if we can't find a config file. Make parse failures
> fatal, and actually raise an error message.
> 
> Signed-off-by: Cole Robinson <crobinso at redhat.com>
> ---
>  src/qemu/qemu_conf.c |   13 +++++++++----
>  1 files changed, 9 insertions(+), 4 deletions(-)
> 
> diff --git a/src/qemu/qemu_conf.c b/src/qemu/qemu_conf.c
> index ce42bd6..e2f7b31 100644
> --- a/src/qemu/qemu_conf.c
> +++ b/src/qemu/qemu_conf.c
> @@ -133,16 +133,21 @@ int qemudLoadDriverConfig(struct qemud_driver *driver,
>      /* Just check the file is readable before opening it, otherwise
>       * libvirt emits an error.
>       */
> -    if (access (filename, R_OK) == -1) return 0;
> +    if (access (filename, R_OK) == -1) {
> +        VIR_INFO("Could not read qemu config file %s", filename);
> +        return 0;
> +    }
>  
>      conf = virConfReadFile (filename, 0);
> -    if (!conf) return 0;
> +    if (!conf) {
> +        return -1;
> +    }
>  
>  
>  #define CHECK_TYPE(name,typ) if (p && p->type != (typ)) {               \
>          qemuReportError(VIR_ERR_INTERNAL_ERROR,                         \
> -                         "remoteReadConfigFile: %s: %s: expected type " #typ, \
> -                         filename, (name));                             \
> +                        "%s: %s: %s: expected type " #typ,              \
> +                        __func__, filename, (name));                    \
>          virConfFree(conf);                                              \
>          return -1;                                                      \

Including the function name in the error message is dubious behaviour,
not in line with the rest of libvirt. We should just kill it. For the
user only the config filename and parameter are relevant


Daniel
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