tools: rename libxc's evtchn_port_or_error_t with an xc_ prefix

This is used only for xc_evtchn_alloc_unbound and the legacy/compat
versions of the old interfaces and avoids redefining the typedef. The
evtchn_port_or_error_t name is now used only be libxenevtchn.

None of the callers of xc_evtchn_alloc_unbound use the type
themselves.

NB xc_evtchn_alloc_unbound differs from xc_evtchn_bind_unbound_port
and the underlying xenevtchn_bind_unbound_port in that it allows the
specification of the local domain rather than assuming self. This is
only useful during domain build.

Reported-by: Olaf Hering <olaf@aepfle.de>
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>

tools/libxc/include/xenctrl.h

@@ -1077,7 +1077,7 @@ xc_cpumap_t xc_cpupool_freeinfo(xc_interface *xch);
  */
 
 /* A port identifier is guaranteed to fit in 31 bits. */
-typedef int evtchn_port_or_error_t;
+typedef int xc_evtchn_port_or_error_t;
 
 /**
  * This function allocates an unbound port.  Ports are named endpoints used for
@@ -1093,7 +1093,7 @@ typedef int evtchn_port_or_error_t;
  * @parm remote_dom the ID of the domain who will later bind
  * @return allocated port (in @dom) on success, -1 on failure
  */
-evtchn_port_or_error_t
+xc_evtchn_port_or_error_t
 xc_evtchn_alloc_unbound(xc_interface *xch,
                         uint32_t dom,
                         uint32_t remote_dom);

tools/libxc/include/xenctrl_compat.h

@@ -57,15 +57,15 @@ xc_evtchn *xc_evtchn_open(xentoollog_logger *logger,
 int xc_evtchn_close(xc_evtchn *xce);
 int xc_evtchn_fd(xc_evtchn *xce);
 int xc_evtchn_notify(xc_evtchn *xce, evtchn_port_t port);
-evtchn_port_or_error_t
+xc_evtchn_port_or_error_t
 xc_evtchn_bind_unbound_port(xc_evtchn *xce, int domid);
-evtchn_port_or_error_t
+xc_evtchn_port_or_error_t
 xc_evtchn_bind_interdomain(xc_evtchn *xce, int domid,
                            evtchn_port_t remote_port);
-evtchn_port_or_error_t
+xc_evtchn_port_or_error_t
 xc_evtchn_bind_virq(xc_evtchn *xce, unsigned int virq);
 int xc_evtchn_unbind(xc_evtchn *xce, evtchn_port_t port);
-evtchn_port_or_error_t
+xc_evtchn_port_or_error_t
 xc_evtchn_pending(xc_evtchn *xce);
 int xc_evtchn_unmask(xc_evtchn *xce, evtchn_port_t port);
 

tools/libxc/xc_evtchn.c

@@ -43,7 +43,7 @@ static int do_evtchn_op(xc_interface *xch, int cmd, void *arg,
     return ret;
 }
 
-evtchn_port_or_error_t
+xc_evtchn_port_or_error_t
 xc_evtchn_alloc_unbound(xc_interface *xch,
                         uint32_t dom,
                         uint32_t remote_dom)