From 27151b3d10a3adfa9befea55457b9e4e3052eff7 Mon Sep 17 00:00:00 2001
From: "Richard W.M. Jones" <rjones@redhat.com>
Date: Mon, 30 Apr 2007 16:58:26 +0000
Subject: [PATCH] Mon Apr 30 18:02:00 BST 2007 Richard W.M. Jones
 <rjones@redhat.com>

	* src/proxy_internal.c (xenProxyGetCapabilities): Add support
	  for virConnectGetCapabilities across Xen proxy.
---
 ChangeLog             |  5 +++++
 proxy/libvirt_proxy.c | 23 +++++++++++++++++++
 src/proxy_internal.c  | 52 ++++++++++++++++++++++++++++++++++++++++++-
 src/proxy_internal.h  |  3 ++-
 4 files changed, 81 insertions(+), 2 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 05df555485..56a9108582 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Mon Apr 30 18:02:00 BST 2007 Richard W.M. Jones <rjones@redhat.com>
+
+	* src/proxy_internal.c (xenProxyGetCapabilities): Add support
+	  for virConnectGetCapabilities across Xen proxy.
+
 Mon Apr 30 18:00:00 BST 2007 Richard W.M. Jones <rjones@redhat.com>
 
 	* src/xen_unified.c: In the non-root case keep track of the
diff --git a/proxy/libvirt_proxy.c b/proxy/libvirt_proxy.c
index c21c34f945..21424d05c1 100644
--- a/proxy/libvirt_proxy.c
+++ b/proxy/libvirt_proxy.c
@@ -587,6 +587,29 @@ retry2:
 		req->len = sizeof(virProxyPacket) + sizeof(virNodeInfo);
 	    }
 	    break;
+
+	case VIR_PROXY_GET_CAPABILITIES:
+	    if (req->len != sizeof(virProxyPacket))
+	        goto comm_error;
+
+        xml = xenHypervisorGetCapabilities (conn);
+        if (!xml) {
+            req->data.arg = -1;
+            req->len = sizeof (virProxyPacket);
+        } else {
+            int xmllen = strlen (xml);
+            if (xmllen > (int) sizeof (request.extra.str)) {
+                req->data.arg = -2;
+                req->len = sizeof (virProxyPacket);
+            } else {
+                req->data.arg = 0;
+                memmove (request.extra.str, xml, xmllen);
+                req->len = sizeof (virProxyPacket) + xmllen;
+            }
+            free (xml);
+        }
+        break;
+
 	case VIR_PROXY_DOMAIN_XML:
 	    if (req->len != sizeof(virProxyPacket))
 	        goto comm_error;
diff --git a/src/proxy_internal.c b/src/proxy_internal.c
index 5767f30fa7..fdf16f0269 100644
--- a/src/proxy_internal.c
+++ b/src/proxy_internal.c
@@ -31,6 +31,7 @@ static int xenProxyClose(virConnectPtr conn);
 static int xenProxyOpen(virConnectPtr conn, const char *name, int flags);
 static int xenProxyGetVersion(virConnectPtr conn, unsigned long *hvVer);
 static int xenProxyNodeGetInfo(virConnectPtr conn, virNodeInfoPtr info);
+static char *xenProxyGetCapabilities(virConnectPtr conn);
 static int xenProxyListDomains(virConnectPtr conn, int *ids, int maxids);
 static int xenProxyNumOfDomains(virConnectPtr conn);
 static virDomainPtr xenProxyLookupByID(virConnectPtr conn, int id);
@@ -53,7 +54,7 @@ virDriver xenProxyDriver = {
     xenProxyGetVersion, /* version */
     NULL, /* getMaxVcpus */
     xenProxyNodeGetInfo, /* nodeGetInfo */
-    NULL, /* getCapabilities */
+    xenProxyGetCapabilities, /* getCapabilities */
     xenProxyListDomains, /* listDomains */
     xenProxyNumOfDomains, /* numOfDomains */
     NULL, /* domainCreateLinux */
@@ -976,6 +977,55 @@ xenProxyNodeGetInfo(virConnectPtr conn, virNodeInfoPtr info) {
     return(0);
 }
 
+/**
+ * xenProxyGetCapabilities:
+ * @conn: pointer to the Xen Daemon block
+ * 
+ * Extract capabilities of the hypervisor.
+ *
+ * Returns capabilities in case of success (freed by caller)
+ * and NULL in case of failure.
+ */
+static char *
+xenProxyGetCapabilities (virConnectPtr conn)
+{
+    virProxyPacket req;
+    virProxyFullPacket ans;
+    int ret, xmllen;
+    char *xml;
+
+    if (!VIR_IS_CONNECT(conn)) {
+        virProxyError(conn, VIR_ERR_INVALID_CONN, __FUNCTION__);
+        return NULL;
+    }
+    memset(&req, 0, sizeof(req));
+    req.command = VIR_PROXY_GET_CAPABILITIES;
+    req.data.arg = 0;
+    req.len = sizeof(req);
+    ret = xenProxyCommand(conn, &req, &ans, 0);
+    if (ret < 0) {
+        xenProxyClose(conn);
+        return NULL;
+    }
+    if (ans.data.arg == -1)
+        return NULL;
+    if (ans.len <= sizeof(virProxyPacket)) {
+        virProxyError(conn, VIR_ERR_OPERATION_FAILED, __FUNCTION__);
+        return NULL;
+    }
+
+    xmllen = ans.len - sizeof (virProxyPacket);
+    xml = malloc (xmllen+1);
+    if (!xml) {
+        virProxyError (conn, VIR_ERR_NO_MEMORY, __FUNCTION__);
+        return NULL;
+    }
+    memmove (xml, ans.extra.str, xmllen);
+    xml[xmllen] = '\0';
+
+    return xml;
+}
+
 /**
  * xenProxyDomainDumpXML:
  * @domain: a domain object
diff --git a/src/proxy_internal.h b/src/proxy_internal.h
index 492414471a..f857bd5520 100644
--- a/src/proxy_internal.h
+++ b/src/proxy_internal.h
@@ -36,7 +36,8 @@ typedef enum {
 	VIR_PROXY_MAX_MEMORY = 8,
 	VIR_PROXY_DOMAIN_INFO = 9,
 	VIR_PROXY_DOMAIN_XML = 10,
-	VIR_PROXY_DOMAIN_OSTYPE = 11
+	VIR_PROXY_DOMAIN_OSTYPE = 11,
+    VIR_PROXY_GET_CAPABILITIES = 12
 } virProxyCommand;
 
 /*