Re: [PATCH v2 13/20] virlog: Introduce virLogSetOutputs

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On 08/18/2016 07:47 AM, Erik Skultety wrote:
> This API is the entry point to output modification of the logger. Currently,
> everything is done by virLogParseAndDefineOutputs. Parsing and defining will be
> split into two operations both handled by this method transparently.
> 
> Signed-off-by: Erik Skultety <eskultet@xxxxxxxxxx>
> ---
>  src/libvirt_private.syms |  1 +
>  src/util/virlog.c        | 31 +++++++++++++++++++++++++++++++
>  src/util/virlog.h        |  1 +
>  3 files changed, 33 insertions(+)
> 
> diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
> index 063fe5f..5fb30e6 100644
> --- a/src/libvirt_private.syms
> +++ b/src/libvirt_private.syms
> @@ -1876,6 +1876,7 @@ virLogProbablyLogMessage;
>  virLogReset;
>  virLogSetDefaultPriority;
>  virLogSetFromEnv;
> +virLogSetOutputs;
>  virLogUnlock;
>  virLogVMessage;
>  
> diff --git a/src/util/virlog.c b/src/util/virlog.c
> index 4b2aa4d..a60c027 100644
> --- a/src/util/virlog.c
> +++ b/src/util/virlog.c
> @@ -2110,3 +2110,34 @@ virLogParseFilters(const char *src, virLogFilterPtr **filters)
>      virStringFreeList(strings);
>      return ret;
>  }
> +
> +/**
> + * virLogSetOutputs:
> + * @outputs: string defining a (set of) output(s)
> + *
> + * Replaces the current set of defined outputs with a new set of outputs.
> + *
> + * Returns the number of outputs successfully defined or -1 in case of an
> + * error.
> + */
> +int
> +virLogSetOutputs(const char *src)
> +{
> +    int ret = -1;
> +    int noutputs = 0;
> +    virLogOutputPtr *outputs = NULL;
> +
> +    if (virLogInitialize() < 0)
> +        return -1;
> +
> +    if ((noutputs = virLogParseOutputs(src, &outputs)) < 0)
> +        goto cleanup;
> +
> +    if ((ret = virLogDefineOutputs(outputs, noutputs)) < 0)
> +        goto cleanup;
> +

If you set outputs = NULL here, then the following "if (ret < 0)" isn't
necessary

> + cleanup:
> +    if (ret < 0)
> +        virLogOutputListFree(outputs, noutputs);
> +    return ret;
> +}
> diff --git a/src/util/virlog.h b/src/util/virlog.h
> index 9ccc650..88e6ac8 100644
> --- a/src/util/virlog.h
> +++ b/src/util/virlog.h
> @@ -197,6 +197,7 @@ void virLogOutputFree(virLogOutputPtr output);
>  void virLogOutputListFree(virLogOutputPtr *list, int count);
>  void virLogFilterFree(virLogFilterPtr filter);
>  void virLogFilterListFree(virLogFilterPtr *list, int count);
> +int virLogSetOutputs(const char *outputs);

s/;/ ATTRIBUTE_NONNULL(1);

ACK w/ adjustments

John

>  
>  /*
>  * Internal logging API
> 

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