[Xen-devel] Re: [PATCH] libxc: NetBSD: implement xc_evtchn_bind_unbound_port

[Christoph Egger <Christoph.Egger@xxxxxxx>]

Works for me. Thanks for doing this.

Acked-by: Christoph Egger <Christoph.Egger@xxxxxxx>

On Thursday 02 December 2010 13:37:12 Ian Campbell wrote:
> # HG changeset patch
> # User Ian Campbell <ian.campbell@xxxxxxxxxx>
> # Date 1291293181 0
> # Node ID 9c0c5aa7b9fec2740fe3647d89d2a1437ffeddd8
> # Parent  55acbaeab0badc9cded7c1b56af79e45d0f78929
> libxc: NetBSD: implement xc_evtchn_bind_unbound_port.
>
> Doesn't actually appear to be used anywhere but is defined for other
> OSes.
>
> The NetBSD evtchn.h contains comments "Return allocated port" for
> several ioctls which currently return the allocated port as a member
> of the argument structure and not as the ioctl return value (I think
> this is a cut and paste error).
>
> I have assumed that this ioctl follows the same pattern as the
> existing NetBSD ioctls and removed the misleading comments.
>
> Not even compile tested.
>
> Signed-off-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
>
> diff -r 55acbaeab0ba -r 9c0c5aa7b9fe tools/include/xen-sys/NetBSD/evtchn.h
> --- a/tools/include/xen-sys/NetBSD/evtchn.h   Thu Dec 02 12:33:01 2010 +0000
> +++ b/tools/include/xen-sys/NetBSD/evtchn.h   Thu Dec 02 12:33:01 2010 +0000
> @@ -33,7 +33,6 @@
>
>  /*
>   * Bind a fresh port to VIRQ @virq.
> - * Return allocated port.
>   */
>  #define IOCTL_EVTCHN_BIND_VIRQ                               \
>       _IOWR('E', 4, struct ioctl_evtchn_bind_virq)
> @@ -44,7 +43,6 @@ struct ioctl_evtchn_bind_virq {
>
>  /*
>   * Bind a fresh port to remote <@remote_domain, @remote_port>.
> - * Return allocated port.
>   */
>  #define IOCTL_EVTCHN_BIND_INTERDOMAIN                        \
>       _IOWR('E', 5, struct ioctl_evtchn_bind_interdomain)
> @@ -55,7 +53,6 @@ struct ioctl_evtchn_bind_interdomain {
>
>  /*
>   * Allocate a fresh port for binding to @remote_domain.
> - * Return allocated port.
>   */
>  #define IOCTL_EVTCHN_BIND_UNBOUND_PORT                       \
>       _IOWR('E', 6, struct ioctl_evtchn_bind_unbound_port)
> diff -r 55acbaeab0ba -r 9c0c5aa7b9fe tools/libxc/xc_netbsd.c
> --- a/tools/libxc/xc_netbsd.c Thu Dec 02 12:33:01 2010 +0000
> +++ b/tools/libxc/xc_netbsd.c Thu Dec 02 12:33:01 2010 +0000
> @@ -206,6 +206,21 @@ int xc_evtchn_notify(int xce_handle, evt
>  }
>
>  evtchn_port_or_error_t
> +xc_evtchn_bind_unbound_port(int xce_handle, int domid)
> +{
> +    struct ioctl_evtchn_bind_unbound_port bind;
> +    int ret;
> +
> +    bind.remote_domain = domid;
> +
> +    ret = ioctl(xce_handle, IOCTL_EVTCHN_BIND_UNBOUND_PORT, &bind);
> +    if (ret == 0)
> +     return bind.port;
> +    else
> +     return -1;
> +}
> +
> +evtchn_port_or_error_t
>  xc_evtchn_bind_interdomain(int xce_handle, int domid,
>                             evtchn_port_t remote_port)
>  {



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