qemu: Implement backup job APIs and qemu handling

This allows to start and manage the backup job.
Signed-off-by: NPeter Krempa <pkrempa@redhat.com>
Reviewed-by: NJán Tomko <jtomko@redhat.com>

po/POTFILES.in

@@ -140,6 +140,7 @@
 @SRCDIR@/src/phyp/phyp_driver.c
 @SRCDIR@/src/qemu/qemu_agent.c
 @SRCDIR@/src/qemu/qemu_alias.c
+@SRCDIR@/src/qemu/qemu_backup.c
 @SRCDIR@/src/qemu/qemu_block.c
 @SRCDIR@/src/qemu/qemu_blockjob.c
 @SRCDIR@/src/qemu/qemu_capabilities.c

src/qemu/Makefile.inc.am

@@ -69,6 +69,8 @@ QEMU_DRIVER_SOURCES = \
 	qemu/qemu_vhost_user_gpu.h \
 	qemu/qemu_checkpoint.c \
 	qemu/qemu_checkpoint.h \
+	qemu/qemu_backup.c \
+	qemu/qemu_backup.h \
 	$(NULL)
 
 

src/qemu/qemu_backup.h

+/*
+ * qemu_backup.h: Implementation and handling of the backup jobs
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library.  If not, see
+ * <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+int
+qemuBackupBegin(virDomainObjPtr vm,
+                const char *backupXML,
+                const char *checkpointXML,
+                unsigned int flags);
+
+char *
+qemuBackupGetXMLDesc(virDomainObjPtr vm,
+                     unsigned int flags);
+
+void
+qemuBackupJobCancelBlockjobs(virDomainObjPtr vm,
+                             virDomainBackupDefPtr backup,
+                             bool terminatebackup);
+
+void
+qemuBackupNotifyBlockjobEnd(virDomainObjPtr vm,
+                            virDomainDiskDefPtr disk,
+                            qemuBlockjobState state,
+                            unsigned long long cur,
+                            unsigned long long end);

src/qemu/qemu_driver.c

@@ -52,6 +52,7 @@
 #include "qemu_blockjob.h"
 #include "qemu_security.h"
 #include "qemu_checkpoint.h"
+#include "qemu_backup.h"
 
 #include "virerror.h"
 #include "virlog.h"
@@ -17197,6 +17198,50 @@ qemuDomainCheckpointDelete(virDomainCheckpointPtr checkpoint,
 }
 
 
+static int
+qemuDomainBackupBegin(virDomainPtr domain,
+                      const char *backupXML,
+                      const char *checkpointXML,
+                      unsigned int flags)
+{
+    virDomainObjPtr vm = NULL;
+    int ret = -1;
+
+    if (!(vm = qemuDomainObjFromDomain(domain)))
+        goto cleanup;
+
+    if (virDomainBackupBeginEnsureACL(domain->conn, vm->def) < 0)
+        goto cleanup;
+
+    ret = qemuBackupBegin(vm, backupXML, checkpointXML, flags);
+
+ cleanup:
+    virDomainObjEndAPI(&vm);
+    return ret;
+}
+
+
+static char *
+qemuDomainBackupGetXMLDesc(virDomainPtr domain,
+                           unsigned int flags)
+{
+    virDomainObjPtr vm = NULL;
+    char *ret = NULL;
+
+    if (!(vm = qemuDomainObjFromDomain(domain)))
+        return NULL;
+
+    if (virDomainBackupGetXMLDescEnsureACL(domain->conn, vm->def) < 0)
+        goto cleanup;
+
+    ret = qemuBackupGetXMLDesc(vm, flags);
+
+ cleanup:
+    virDomainObjEndAPI(&vm);
+    return ret;
+}
+
+
 static int qemuDomainQemuMonitorCommand(virDomainPtr domain, const char *cmd,
                                         char **result, unsigned int flags)
 {
@@ -22932,6 +22977,8 @@ static virHypervisorDriver qemuHypervisorDriver = {
     .domainCheckpointDelete = qemuDomainCheckpointDelete, /* 5.6.0 */
     .domainGetGuestInfo = qemuDomainGetGuestInfo, /* 5.7.0 */
     .domainAgentSetResponseTimeout = qemuDomainAgentSetResponseTimeout, /* 5.10.0 */
+    .domainBackupBegin = qemuDomainBackupBegin, /* 6.0.0 */
+    .domainBackupGetXMLDesc = qemuDomainBackupGetXMLDesc, /* 6.0.0 */
 };