[libvirt] [PATCH v5.1 05/11] virCaps: get rid of "defaultInitPath" value in the virCaps struct

[Peter Krempa]

This gets rid of the parameter in favor of using the new callback
infrastructure to do the same stuff.

This patch implements the domain adjustment callback in the openVZ
driver and moves the check from the parser to a new validation method in
the callback infrastructure.
---
 src/conf/capabilities.h    |  1 -
 src/conf/domain_conf.c     | 31 +++++++++++++++++++------------
 src/openvz/openvz_conf.c   |  1 -
 src/openvz/openvz_driver.c | 26 +++++++++++++++++++++++++-
 4 files changed, 44 insertions(+), 15 deletions(-)

diff --git a/src/conf/capabilities.h b/src/conf/capabilities.h
index 8abe88a..064da80 100644
--- a/src/conf/capabilities.h
+++ b/src/conf/capabilities.h
@@ -168,7 +168,6 @@ struct _virCaps {
     int defaultDiskDriverType; /* enum virStorageFileFormat */
     int (*defaultConsoleTargetType)(const char *ostype, virArch guestarch);
     bool hasWideScsiBus;
-    const char *defaultInitPath;
 };


diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index ca2b805..8467424 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -2480,6 +2480,21 @@ int virDomainDeviceInfoIterate(virDomainDefPtr def,


 static int
+virDomainDefPostParseInternal(virDomainDefPtr def,
+                              virCapsPtr caps ATTRIBUTE_UNUSED)
+{
+    /* verify init path for container based domains */
+    if (STREQ(def->os.type, "exe") && !def->os.init) {
+        virReportError(VIR_ERR_XML_ERROR, "%s",
+                       _("init binary must be specified"));
+        return -1;
+    }
+
+    return 0;
+}
+
+
+static int
 virDomainDeviceDefPostParse(virDomainDeviceDefPtr dev,
                             virDomainDefPtr def,
                             virCapsPtr caps,
@@ -2542,6 +2557,10 @@ virDomainDefPostParse(virDomainDefPtr def,
                                           &data)) < 0)
         return ret;

+
+    if ((ret = virDomainDefPostParseInternal(def, caps)) < 0)
+        return ret;
+
     return 0;
 }

@@ -10333,18 +10352,6 @@ virDomainDefParseXML(xmlDocPtr xml,

     if (STREQ(def->os.type, "exe")) {
         def->os.init = virXPathString("string(./os/init[1])", ctxt);
-        if (!def->os.init) {
-            if (caps->defaultInitPath) {
-                def->os.init = strdup(caps->defaultInitPath);
-                if (!def->os.init) {
-                    goto no_memory;
-                }
-            } else {
-                virReportError(VIR_ERR_XML_ERROR, "%s",
-                               _("init binary must be specified"));
-                goto error;
-            }
-        }
         def->os.cmdline = virXPathString("string(./os/cmdline[1])", ctxt);

         if ((n = virXPathNodeSet("./os/initarg", ctxt, &nodes)) < 0) {
diff --git a/src/openvz/openvz_conf.c b/src/openvz/openvz_conf.c
index 3b0731b..439e457 100644
--- a/src/openvz/openvz_conf.c
+++ b/src/openvz/openvz_conf.c
@@ -206,7 +206,6 @@ virCapsPtr openvzCapsInit(void)
                                       NULL) == NULL)
         goto no_memory;

-    caps->defaultInitPath = "/sbin/init";
     caps->defaultConsoleTargetType = openvzDefaultConsoleType;

     return caps;
diff --git a/src/openvz/openvz_driver.c b/src/openvz/openvz_driver.c
index 9b1919a..583a415 100644
--- a/src/openvz/openvz_driver.c
+++ b/src/openvz/openvz_driver.c
@@ -97,6 +97,29 @@ static void cmdExecFree(const char *cmdExec[])
     }
 }

+
+static int
+openvzDomainDefPostParse(virDomainDefPtr def,
+                         virCapsPtr caps ATTRIBUTE_UNUSED,
+                         void *opaque ATTRIBUTE_UNUSED)
+{
+    /* fill the init path */
+    if (STREQ(def->os.type, "exe") && !def->os.init) {
+        if (!(def->os.init = strdup("/sbin/init"))) {
+            virReportOOMError();
+            return -1;
+        }
+    }
+
+    return 0;
+}
+
+
+virDomainDefParserConfig openvzDomainDefParserConfig = {
+        .domainPostParseCallback = openvzDomainDefPostParse,
+};
+
+
 /* generate arguments to create OpenVZ container
    return -1 - error
            0 - OK
@@ -1453,7 +1476,8 @@ static virDrvOpenStatus openvzOpen(virConnectPtr conn,
     if (!(driver->caps = openvzCapsInit()))
         goto cleanup;

-    if (!(driver->xmlopt = virDomainXMLOptionNew(NULL, NULL, NULL)))
+    if (!(driver->xmlopt = virDomainXMLOptionNew(&openvzDomainDefParserConfig,
+                                                 NULL, NULL)))
         goto cleanup;

     if (openvzLoadDomains(driver) < 0)
-- 
1.8.1.5