Re: [libvirt RFCv7 12/40] tools: make use of params in doSave

[Claudio Fontana <cfontana@xxxxxxx>]

whops this is pretty wrong.

On 5/6/22 3:10 PM, Claudio Fontana wrote:
> Signed-off-by: Claudio Fontana <cfontana@xxxxxxx>
> ---
>  tools/virsh-domain.c | 25 ++++++++++++++++++-------
>  1 file changed, 18 insertions(+), 7 deletions(-)
> 
> diff --git a/tools/virsh-domain.c b/tools/virsh-domain.c
> index ba492e807e..be5679df0f 100644
> --- a/tools/virsh-domain.c
> +++ b/tools/virsh-domain.c
> @@ -4203,6 +4203,9 @@ doSave(void *opaque)
>      g_autoptr(virshDomain) dom = NULL;
>      const char *name = NULL;
>      const char *to = NULL;
> +    virTypedParameterPtr params = NULL;
> +    int nparams = 0;
> +    int maxparams = 0;
>      unsigned int flags = 0;
>      const char *xmlfile = NULL;
>      g_autofree char *xml = NULL;
> @@ -4216,9 +4219,13 @@ doSave(void *opaque)
>          goto out_sig;
>  #endif /* !WIN32 */
>  
> -    if (vshCommandOptStringReq(ctl, cmd, "file", &to) < 0)
> +    if (vshCommandOptStringReq(ctl, cmd, "file", &to) < 0) {
>          goto out;
> -
> +    } else {
> +        if (virTypedParamsAddString(&params, &nparams, &maxparams,
> +                                    VIR_SAVE_PARAM_FILE, to) < 0)
> +            goto out;
> +    }
>      if (vshCommandOptBool(cmd, "bypass-cache"))
>          flags |= VIR_DOMAIN_SAVE_BYPASS_CACHE;
>      if (vshCommandOptBool(cmd, "running"))
> @@ -4232,14 +4239,17 @@ doSave(void *opaque)
>      if (!(dom = virshCommandOptDomain(ctl, cmd, &name)))
>          goto out;
>  
> -    if (xmlfile &&
> -        virFileReadAll(xmlfile, VSH_MAX_XML_FILE, &xml) < 0) {
> -        vshReportError(ctl);
> -        goto out;
> +    if (xmlfile) {
> +        if (virFileReadAll(xmlfile, VSH_MAX_XML_FILE, &xml) < 0) {
> +            vshReportError(ctl);
> +            goto out;
> +        } else if (virTypedParamsAddString(&params, &nparams, &maxparams,
> +                                           VIR_SAVE_PARAM_DXML, xml) < 0)
> +            goto out;
>      }
>  
>      if (flags || xml) {
> -        rc = virDomainSaveFlags(dom, to, xml, flags);
> +        rc = virDomainSaveParams(dom, params, nparams, flags);
>      } else {
>          rc = virDomainSave(dom, to);

Could you help me understand what is the right check to use here?

Should I do like before,

if (flags || xml) {
 rc = virDomainSaveFlags(dom, to, xml, flags);
} else {
 rc = virDomainSave(dom, to);
}

and only involve virDomainSaveParams when introduced later?

How should we decide whether to trigger virDomainSaveFlags
or virDomainSaveParams ...?


>      }
> @@ -4252,6 +4262,7 @@ doSave(void *opaque)
>      data->ret = 0;
>  
>   out:
> +    virTypedParamsFree(params, nparams);
>  #ifndef WIN32
>      pthread_sigmask(SIG_SETMASK, &oldsigmask, NULL);
>   out_sig:
>