[libvirt] [PATCH 05/10] Handle arbitrary qemu command-lines in qemuParseCommandLine.

[Chris Lalancette <clalance@xxxxxxxxxx>]

Now that we have the ability to specify arbitrary qemu
command-line parameters in the XML, use it to handle unknown
command-line parameters when doing a native-to-xml conversion.

Signed-off-by: Chris Lalancette <clalance@xxxxxxxxxx>
---
 src/conf/domain_conf.c   |   13 +++++++++----
 src/conf/domain_conf.h   |    2 ++
 src/libvirt_private.syms |    1 +
 src/qemu/qemu_conf.c     |   27 +++++++++++++++++++++------
 4 files changed, 33 insertions(+), 10 deletions(-)

diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index a374206..3f13f32 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -3719,6 +3719,14 @@ static char *virDomainDefDefaultEmulator(virDomainDefPtr def,
     return retemu;
 }
 
+void virDomainDefAssignNamespace(virCapsPtr caps, virDomainDefPtr def)
+{
+    def->ns.parse = caps->ns->parse;
+    def->ns.free = caps->ns->free;
+    def->ns.format = caps->ns->format;
+    def->ns.href = caps->ns->href;
+}
+
 static virDomainDefPtr virDomainDefParseXML(virCapsPtr caps,
                                             xmlDocPtr xml,
                                             xmlNodePtr root,
@@ -4377,10 +4385,7 @@ static virDomainDefPtr virDomainDefParseXML(virCapsPtr caps,
         /* we have to make a copy of all of the callback pointers here since
          * we won't have the virCaps structure available during free
          */
-        def->ns.parse = caps->ns->parse;
-        def->ns.free = caps->ns->free;
-        def->ns.format = caps->ns->format;
-        def->ns.href = caps->ns->href;
+        virDomainDefAssignNamespace(caps, def);
 
         if (def->ns.parse) {
             if ((def->ns.parse)(xml, root, ctxt, &def->namespaceData) < 0)
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index 80f4146..dddfec4 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -979,6 +979,8 @@ virDomainDefPtr virDomainDefParseNode(virCapsPtr caps,
 
 int virDomainDefAddImplicitControllers(virDomainDefPtr def);
 
+void virDomainDefAssignNamespace(virCapsPtr caps, virDomainDefPtr def);
+
 # endif
 char *virDomainDefFormat(virDomainDefPtr def,
                          int flags);
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index 7950bcd..ddc412d 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -215,6 +215,7 @@ virDomainSnapshotObjUnref;
 virDomainSnapshotDefParseString;
 virDomainSnapshotDefFormat;
 virDomainSnapshotAssignDef;
+virDomainDefAssignNamespace;
 
 
 # domain_event.h
diff --git a/src/qemu/qemu_conf.c b/src/qemu/qemu_conf.c
index 95843bf..c4b55de 100644
--- a/src/qemu/qemu_conf.c
+++ b/src/qemu/qemu_conf.c
@@ -5704,6 +5704,7 @@ virDomainDefPtr qemuParseCommandLine(virCapsPtr caps,
     const char **nics = NULL;
     int video = VIR_DOMAIN_VIDEO_TYPE_CIRRUS;
     int nvirtiodisk = 0;
+    qemuDomainCmdlineDefPtr cmd;
 
     if (!progargv[0]) {
         qemuReportError(VIR_ERR_INTERNAL_ERROR,
@@ -5714,6 +5715,10 @@ virDomainDefPtr qemuParseCommandLine(virCapsPtr caps,
     if (VIR_ALLOC(def) < 0)
         goto no_memory;
 
+    /* allocate the cmdlinedef up-front; if it's unused, we'll free it later */
+    if (VIR_ALLOC(cmd) < 0)
+        goto no_memory;
+
     virUUIDGenerate(def->uuid);
 
     def->id = -1;
@@ -6138,12 +6143,15 @@ virDomainDefPtr qemuParseCommandLine(virCapsPtr caps,
         } else if (STREQ(arg, "-S")) {
             /* ignore, always added by libvirt */
         } else {
-            VIR_WARN(_("unknown QEMU argument '%s' during conversion"), arg);
-#if 0
-            qemuReportError(VIR_ERR_INTERNAL_ERROR,
-                            _("unknown argument '%s'"), arg);
-            goto error;
-#endif
+            /* something we can't yet parse.  Add it to the qemu namespace
+             * cmdline/environment advanced options and hope for the best
+             */
+            if (VIR_REALLOC_N(cmd->extra, cmd->num_extra+1) < 0)
+                goto no_memory;
+            cmd->extra[cmd->num_extra] = strdup(arg);
+            if (cmd->extra[cmd->num_extra] == NULL)
+                goto no_memory;
+            cmd->num_extra++;
         }
     }
 
@@ -6203,6 +6211,13 @@ virDomainDefPtr qemuParseCommandLine(virCapsPtr caps,
     if (virDomainDefAddImplicitControllers(def) < 0)
         goto error;
 
+    if (cmd->num_extra || cmd->num_env) {
+        virDomainDefAssignNamespace(caps, def);
+        def->namespaceData = cmd;
+    }
+    else
+        VIR_FREE(cmd);
+
     return def;
 
 no_memory:
-- 
1.6.6.1

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