src/xenxs: Refactor code parsing Vif config

introduce function
  xenParseXMVif(virConfPtr conf,........);
which parses Vfb config instead
Signed-off-by: NKiarie Kahurani <davidkiarie4@gmail.com>

src/xenxs/xen_xm.c

@@ -946,133 +946,13 @@ xenParseXMCharDev(virConfPtr conf, virDomainDefPtr def)
 }
 
 
-/*
- * Turn a config record into a lump of XML describing the
- * domain, suitable for later feeding for virDomainCreateXML
- */
-virDomainDefPtr
-xenParseXM(virConfPtr conf, int xendConfigVersion,
-           virCapsPtr caps)
+static int
+xenParseXMVif(virConfPtr conf, virDomainDefPtr def)
 {
-    const char *str;
-    int hvm = 0;
-    virConfValuePtr list;
-    virDomainDefPtr def = NULL;
-    virDomainNetDefPtr net = NULL;
-    size_t i;
-    const char *defaultMachine;
     char *script = NULL;
+    virDomainNetDefPtr net = NULL;
+    virConfValuePtr list = virConfGetValue(conf, "vif");
 
-    if (VIR_ALLOC(def) < 0)
-        return NULL;
-
-    def->virtType = VIR_DOMAIN_VIRT_XEN;
-    def->id = -1;
-
-    if (xenXMConfigCopyString(conf, "name", &def->name) < 0)
-        goto cleanup;
-    if (xenXMConfigGetUUID(conf, "uuid", def->uuid) < 0)
-        goto cleanup;
-
-
-    if ((xenXMConfigGetString(conf, "builder", &str, "linux") == 0) &&
-        STREQ(str, "hvm"))
-        hvm = 1;
-
-    if (VIR_STRDUP(def->os.type, hvm ? "hvm" : "xen") < 0)
-        goto cleanup;
-
-    def->os.arch =
-        virCapabilitiesDefaultGuestArch(caps,
-                                        def->os.type,
-                                        virDomainVirtTypeToString(def->virtType));
-    if (!def->os.arch) {
-        virReportError(VIR_ERR_INTERNAL_ERROR,
-                       _("no supported architecture for os type '%s'"),
-                       def->os.type);
-        goto cleanup;
-    }
-
-    defaultMachine = virCapabilitiesDefaultGuestMachine(caps,
-                                                        def->os.type,
-                                                        def->os.arch,
-                                                        virDomainVirtTypeToString(def->virtType));
-    if (defaultMachine != NULL) {
-        if (VIR_STRDUP(def->os.machine, defaultMachine) < 0)
-            goto cleanup;
-    }
-
-    if (hvm) {
-        const char *boot;
-        if (xenXMConfigCopyString(conf, "kernel", &def->os.loader) < 0)
-            goto cleanup;
-
-        if (xenXMConfigGetString(conf, "boot", &boot, "c") < 0)
-            goto cleanup;
-
-        for (i = 0; i < VIR_DOMAIN_BOOT_LAST && boot[i]; i++) {
-            switch (*boot) {
-            case 'a':
-                def->os.bootDevs[i] = VIR_DOMAIN_BOOT_FLOPPY;
-                break;
-            case 'd':
-                def->os.bootDevs[i] = VIR_DOMAIN_BOOT_CDROM;
-                break;
-            case 'n':
-                def->os.bootDevs[i] = VIR_DOMAIN_BOOT_NET;
-                break;
-            case 'c':
-            default:
-                def->os.bootDevs[i] = VIR_DOMAIN_BOOT_DISK;
-                break;
-            }
-            def->os.nBootDevs++;
-        }
-    } else {
-        const char *extra, *root;
-
-        if (xenXMConfigCopyStringOpt(conf, "bootloader", &def->os.bootloader) < 0)
-            goto cleanup;
-        if (xenXMConfigCopyStringOpt(conf, "bootargs", &def->os.bootloaderArgs) < 0)
-            goto cleanup;
-
-        if (xenXMConfigCopyStringOpt(conf, "kernel", &def->os.kernel) < 0)
-            goto cleanup;
-        if (xenXMConfigCopyStringOpt(conf, "ramdisk", &def->os.initrd) < 0)
-            goto cleanup;
-        if (xenXMConfigGetString(conf, "extra", &extra, NULL) < 0)
-            goto cleanup;
-        if (xenXMConfigGetString(conf, "root", &root, NULL) < 0)
-            goto cleanup;
-
-        if (root) {
-            if (virAsprintf(&def->os.cmdline, "root=%s %s", root, extra) < 0)
-                goto cleanup;
-        } else {
-            if (VIR_STRDUP(def->os.cmdline, extra) < 0)
-                goto cleanup;
-        }
-    }
-
-    if (xenParseXMMem(conf, def) < 0)
-        goto cleanup;
-
-    if (xenParseXMEventsActions(conf, def) < 0)
-        goto cleanup;
-
-    if (xenParseXMCPUFeatures(conf, def) < 0)
-        goto cleanup;
-
-    if (xenParseXMTimeOffset(conf, def, xendConfigVersion) < 0)
-        goto cleanup;
-
-    if (xenParseXMDisk(conf, def, xendConfigVersion) < 0)
-        goto cleanup;
-
-    if (xenXMConfigCopyStringOpt(conf, "device_model", &def->emulator) < 0)
-        goto cleanup;
-
-    list = virConfGetValue(conf, "vif");
     if (list && list->type == VIR_CONF_LIST) {
         list = list->list;
         while (list) {
@@ -1128,14 +1008,16 @@ xenParseXM(virConfPtr conf, int xendConfigVersion,
                     int len = nextkey ? (nextkey - data) : sizeof(model) - 1;
                     if (virStrncpy(model, data, len, sizeof(model)) == NULL) {
                         virReportError(VIR_ERR_INTERNAL_ERROR,
-                                       _("Model %s too big for destination"), data);
+                                       _("Model %s too big for destination"),
+                                       data);
                         goto skipnic;
                     }
                 } else if (STRPREFIX(key, "type=")) {
                     int len = nextkey ? (nextkey - data) : sizeof(type) - 1;
                     if (virStrncpy(type, data, len, sizeof(type)) == NULL) {
                         virReportError(VIR_ERR_INTERNAL_ERROR,
-                                       _("Type %s too big for destination"), data);
+                                       _("Type %s too big for destination"),
+                                       data);
                         goto skipnic;
                     }
                 } else if (STRPREFIX(key, "vifname=")) {
@@ -1212,9 +1094,144 @@ xenParseXM(virConfPtr conf, int xendConfigVersion,
         skipnic:
             list = list->next;
             virDomainNetDefFree(net);
+            VIR_FREE(script);
+        }
+    }
+
+    return 0;
+
+ cleanup:
+    VIR_FREE(script);
+    return -1;
+}
+
+
+/*
+ * Turn a config record into a lump of XML describing the
+ * domain, suitable for later feeding for virDomainCreateXML
+ */
+virDomainDefPtr
+xenParseXM(virConfPtr conf, int xendConfigVersion,
+           virCapsPtr caps)
+{
+    const char *str;
+    int hvm = 0;
+    virDomainDefPtr def = NULL;
+    size_t i;
+    const char *defaultMachine;
+
+    if (VIR_ALLOC(def) < 0)
+        return NULL;
+
+    def->virtType = VIR_DOMAIN_VIRT_XEN;
+    def->id = -1;
+
+    if (xenXMConfigCopyString(conf, "name", &def->name) < 0)
+        goto cleanup;
+    if (xenXMConfigGetUUID(conf, "uuid", def->uuid) < 0)
+        goto cleanup;
+
+
+    if ((xenXMConfigGetString(conf, "builder", &str, "linux") == 0) &&
+        STREQ(str, "hvm"))
+        hvm = 1;
+
+    if (VIR_STRDUP(def->os.type, hvm ? "hvm" : "xen") < 0)
+        goto cleanup;
+
+    def->os.arch =
+        virCapabilitiesDefaultGuestArch(caps,
+                                        def->os.type,
+                                        virDomainVirtTypeToString(def->virtType));
+    if (!def->os.arch) {
+        virReportError(VIR_ERR_INTERNAL_ERROR,
+                       _("no supported architecture for os type '%s'"),
+                       def->os.type);
+        goto cleanup;
+    }
+
+    defaultMachine = virCapabilitiesDefaultGuestMachine(caps,
+                                                        def->os.type,
+                                                        def->os.arch,
+                                                        virDomainVirtTypeToString(def->virtType));
+    if (defaultMachine != NULL) {
+        if (VIR_STRDUP(def->os.machine, defaultMachine) < 0)
+            goto cleanup;
+    }
+
+    if (hvm) {
+        const char *boot;
+        if (xenXMConfigCopyString(conf, "kernel", &def->os.loader) < 0)
+            goto cleanup;
+
+        if (xenXMConfigGetString(conf, "boot", &boot, "c") < 0)
+            goto cleanup;
+
+        for (i = 0; i < VIR_DOMAIN_BOOT_LAST && boot[i]; i++) {
+            switch (*boot) {
+            case 'a':
+                def->os.bootDevs[i] = VIR_DOMAIN_BOOT_FLOPPY;
+                break;
+            case 'd':
+                def->os.bootDevs[i] = VIR_DOMAIN_BOOT_CDROM;
+                break;
+            case 'n':
+                def->os.bootDevs[i] = VIR_DOMAIN_BOOT_NET;
+                break;
+            case 'c':
+            default:
+                def->os.bootDevs[i] = VIR_DOMAIN_BOOT_DISK;
+                break;
+            }
+            def->os.nBootDevs++;
+        }
+    } else {
+        const char *extra, *root;
+
+        if (xenXMConfigCopyStringOpt(conf, "bootloader", &def->os.bootloader) < 0)
+            goto cleanup;
+        if (xenXMConfigCopyStringOpt(conf, "bootargs", &def->os.bootloaderArgs) < 0)
+            goto cleanup;
+
+        if (xenXMConfigCopyStringOpt(conf, "kernel", &def->os.kernel) < 0)
+            goto cleanup;
+        if (xenXMConfigCopyStringOpt(conf, "ramdisk", &def->os.initrd) < 0)
+            goto cleanup;
+        if (xenXMConfigGetString(conf, "extra", &extra, NULL) < 0)
+            goto cleanup;
+        if (xenXMConfigGetString(conf, "root", &root, NULL) < 0)
+            goto cleanup;
+
+        if (root) {
+            if (virAsprintf(&def->os.cmdline, "root=%s %s", root, extra) < 0)
+                goto cleanup;
+        } else {
+            if (VIR_STRDUP(def->os.cmdline, extra) < 0)
+                goto cleanup;
         }
     }
 
+    if (xenParseXMMem(conf, def) < 0)
+        goto cleanup;
+
+    if (xenParseXMEventsActions(conf, def) < 0)
+        goto cleanup;
+
+    if (xenParseXMCPUFeatures(conf, def) < 0)
+        goto cleanup;
+
+    if (xenParseXMTimeOffset(conf, def, xendConfigVersion) < 0)
+        goto cleanup;
+
+    if (xenParseXMDisk(conf, def, xendConfigVersion) < 0)
+        goto cleanup;
+
+    if (xenXMConfigCopyStringOpt(conf, "device_model", &def->emulator) < 0)
+        goto cleanup;
+
+    if (xenParseXMVif(conf, def) < 0)
+        goto cleanup;
+
     if (xenParseXMPCI(conf, def) < 0)
         goto cleanup;
 
@@ -1259,13 +1276,10 @@ xenParseXM(virConfPtr conf, int xendConfigVersion,
             goto cleanup;
     }
 
-    VIR_FREE(script);
     return def;
 
  cleanup:
-    virDomainNetDefFree(net);
     virDomainDefFree(def);
-    VIR_FREE(script);
     return NULL;
 }