Re: [PATCH v2] LXC: trivially support flag VIR_DRV_FEATURE_TYPED_PARAM_STRING

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> -----Original Message-----
> From: Ján Tomko [mailto:jtomko@xxxxxxxxxx]
> Sent: Tuesday, June 24, 2014 4:57 PM
> To: Chen, Hanxiao/陈 晗霄; libvir-list@xxxxxxxxxx
> Subject: Re:  [PATCH v2] LXC: trivially support flag
> VIR_DRV_FEATURE_TYPED_PARAM_STRING
> 
> On 06/24/2014 09:24 AM, Chen Hanxiao wrote:
> > fix:
> > virsh -c lxc:/// memtune DOMAIN
> > error: Unable to get number of memory parameters
> > error: unsupported flags (0x4) in function lxcDomainGetMemoryParameters
> >
> > Signed-off-by: Chen Hanxiao <chenhanxiao@xxxxxxxxxxxxxx>
> > ---
> > v2: also fix a similar issue in lxcDomainGetSchedulerParametersFlags
> >
> >  src/lxc/lxc_driver.c | 16 ++++++++++++++--
> >  1 file changed, 14 insertions(+), 2 deletions(-)
> >
> > diff --git a/src/lxc/lxc_driver.c b/src/lxc/lxc_driver.c
> > index 06f3e18..d8a31d3 100644
> > --- a/src/lxc/lxc_driver.c
> > +++ b/src/lxc/lxc_driver.c
> > @@ -895,7 +895,13 @@ lxcDomainGetMemoryParameters(virDomainPtr dom,
> >      size_t i;
> >
> >      virCheckFlags(VIR_DOMAIN_AFFECT_LIVE |
> > -                  VIR_DOMAIN_AFFECT_CONFIG, -1);
> > +                  VIR_DOMAIN_AFFECT_CONFIG,
> > +                  VIR_TYPED_PARAM_STRING_OKAY, -1);
> 
> This fails to compile for me:
>   CC       lxc/libvirt_driver_lxc_impl_la-lxc_driver.lo
> lxc/lxc_driver.c:899:48: error: too many arguments provided to function-like
> macro invocation
>                   VIR_TYPED_PARAM_STRING_OKAY, -1);
>                                                ^
> 
Sorry for my mistake.

> 
> > +
> > +    /* We blindly return a string, and let libvirt.c and
> > +     * remote_driver.c do the filtering on behalf of older clients
> > +     * that can't parse it.  */
> 
> The original comment was OK. This is incorrect - neither of these APIs return
> a string.
> 

Thanks, I see.

> > +    flags &= ~VIR_TYPED_PARAM_STRING_OKAY;
> >
> >      if (!(vm = lxcDomObjFromDomain(dom)))
> >          goto cleanup;
> > @@ -1993,7 +1999,13 @@ lxcDomainGetSchedulerParametersFlags(virDomainPtr dom,
> >      virLXCDomainObjPrivatePtr priv;
> >
> >      virCheckFlags(VIR_DOMAIN_AFFECT_LIVE |
> > -                  VIR_DOMAIN_AFFECT_CONFIG, -1);
> > +                  VIR_DOMAIN_AFFECT_CONFIG |
> > +                  VIR_TYPED_PARAM_STRING_OKAY, -1);
> > +
> > +    /* We blindly return a string, and let libvirt.c and
> > +     * remote_driver.c do the filtering on behalf of older clients
> > +     * that can't parse it.  */
> 
> Same here.
> 
> > +    flags &= ~VIR_TYPED_PARAM_STRING_OKAY;
> >
> >      if (!(vm = lxcDomObjFromDomain(dom)))
> >          goto cleanup;
> >
> 
> Jan


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