[libvirt] [PATCH] xen: Fix chardev listen sexpr formatting

[Jim Meyering]

Cole Robinson wrote:
> 'listen' isn't a valid qemu-dm option, as reported a long time ago here:
>
> https://bugzilla.redhat.com/show_bug.cgi?id=492958
>
> Matches the near identical logic in qemu_conf.c
...
> diff --git a/src/xen/xend_internal.c b/src/xen/xend_internal.c
> index a99cc7b..e12bac7 100644
> --- a/src/xen/xend_internal.c
> +++ b/src/xen/xend_internal.c
> @@ -1276,7 +1276,7 @@ xenDaemonParseSxprChar(const char *value,
>          if (def->data.tcp.service == NULL)
>              goto no_memory;
>
> -        if (offset2 && strstr(offset2, ",listen"))
> +        if (offset2 && strstr(offset2, ",server,nowait"))
>              def->data.tcp.listen = 1;
>      }
>      break;
> @@ -1332,7 +1332,7 @@ xenDaemonParseSxprChar(const char *value,
>              goto no_memory;
>
>          if (offset != NULL &&
> -            strstr(offset, ",listen") != NULL)
> +            strstr(offset, ",server,nowait") != NULL)
>              def->data.nix.listen = 1;
>      }
>      break;
> @@ -5209,7 +5209,7 @@ xenDaemonFormatSxprChr(virDomainChrDefPtr def,
>                             "tcp" : "telnet"),
>                            (def->data.tcp.host ? def->data.tcp.host : ""),
>                            (def->data.tcp.service ? def->data.tcp.service : ""),
> -                          (def->data.tcp.listen ? ",listen" : ""));
> +                          (def->data.tcp.listen ? ",server,nowait" : ""));
>          break;
>
>      case VIR_DOMAIN_CHR_TYPE_UDP:
> @@ -5223,7 +5223,7 @@ xenDaemonFormatSxprChr(virDomainChrDefPtr def,
>      case VIR_DOMAIN_CHR_TYPE_UNIX:
>          virBufferVSprintf(buf, "%s:%s%s", type,
>                            def->data.nix.path,
> -                          def->data.nix.listen ? ",listen" : "");
> +                          def->data.nix.listen ? ",server,nowait" : "");

ACK on the basis of similarity to existing code in qemu_conf.c
as you noted.  However, is it possible to encounter the option
names ordered the other way: ",nowait,server" -- or even
with some unrelated option between them ?