Re: [Xen-devel] [PATCH,RFC] More consistent error handling in libxl

[Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>]

I wrote:
> Gianni Tedesco writes ("[Xen-devel] [PATCH,RFC] More consistent error 
> handling in libxl"):
> > +    int rc;
> > +    rc = xc_domain_pause(ctx->xch, domid);
> > +    return libxl_xc_error(rc);
> 
> I'm afraid this pattern is wrong for two reasons.  Firstly,
> xc_domain_pause and functions like it do not return XC_ERROR_* values.
> They typically return -1 on error, and set errno.
> 
> Secondly, the error codes from libxc are not really all that useful.
> They mostly serve to identify where the error originated.
> 
> See the comment in xenctrl.h near line 70.

I see Stefano has applied this already.  I'm going to revert it.

Ian.

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