xenstored: add --event parameter for bootstrapping

When xenstored is run in a minios domain, it needs a bootstrap
connection to dom0 so that additional domain introduce messages can be
sent to it.

Signed-off-by: Daniel De Graaf <dgdegra@tycho.nsa.gov>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Cc: Ian Jackson <ian.jackson@eu.citrix.com>
Cc: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Committed-by: Ian Jackson <Ian.Jackson@eu.citrix.com>

1 files changed, 4 insertions, 2 deletions

diff --git a/tools/xenstore/xenstored_minios.c b/tools/xenstore/xenstored_minios.c
index c8700baa58..1c6f794d39 100644
--- a/tools/xenstore/xenstored_minios.c
+++ b/tools/xenstore/xenstored_minios.c
@@ -46,15 +46,17 @@ void xenbus_notify_running(void)
 
 evtchn_port_t xenbus_evtchn(void)
 {
-	return -1;
+	return dom0_event;
 }
 
 void *xenbus_map(void)
 {
-	return NULL;
+	return xc_gnttab_map_grant_ref(*xcg_handle, 0,
+			GNTTAB_RESERVED_XENSTORE, PROT_READ|PROT_WRITE);
 }
 
 void unmap_xenbus(void *interface)
 {
+	xc_gnttab_munmap(*xcg_handle, interface, 1);
 }