Factorize common migration incoming code

Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

migration-exec.c

@@ -121,20 +121,8 @@ err_after_alloc:
 static void exec_accept_incoming_migration(void *opaque)
 {
     QEMUFile *f = opaque;
-    int ret;
 
-    ret = qemu_loadvm_state(f);
-    if (ret < 0) {
-        fprintf(stderr, "load of migration failed\n");
-        goto err;
-    }
-    qemu_announce_self();
-    DPRINTF("successfully loaded vm state\n");
-
-    if (autostart)
-        vm_start();
-
-err:
+    process_incoming_migration(f);
     qemu_set_fd_handler2(qemu_stdio_fd(f), NULL, NULL, NULL, NULL);
     qemu_fclose(f);
 }

migration-fd.c

@@ -104,20 +104,8 @@ err_after_alloc:
 static void fd_accept_incoming_migration(void *opaque)
 {
     QEMUFile *f = opaque;
-    int ret;
 
-    ret = qemu_loadvm_state(f);
-    if (ret < 0) {
-        fprintf(stderr, "load of migration failed\n");
-        goto err;
-    }
-    qemu_announce_self();
-    DPRINTF("successfully loaded vm state\n");
-
-    if (autostart)
-        vm_start();
-
-err:
+    process_incoming_migration(f);
     qemu_set_fd_handler2(qemu_stdio_fd(f), NULL, NULL, NULL, NULL);
     qemu_fclose(f);
 }

migration-tcp.c

@@ -141,7 +141,7 @@ static void tcp_accept_incoming_migration(void *opaque)
     socklen_t addrlen = sizeof(addr);
     int s = (unsigned long)opaque;
     QEMUFile *f;
-    int c, ret;
+    int c;
 
     do {
         c = qemu_accept(s, (struct sockaddr *)&addr, &addrlen);
@@ -160,18 +160,7 @@ static void tcp_accept_incoming_migration(void *opaque)
         goto out;
     }
 
-    ret = qemu_loadvm_state(f);
-    if (ret < 0) {
-        fprintf(stderr, "load of migration failed\n");
-        goto out_fopen;
-    }
-    qemu_announce_self();
-    DPRINTF("successfully loaded vm state\n");
-
-    if (autostart)
-        vm_start();
-
-out_fopen:
+    process_incoming_migration(f);
     qemu_fclose(f);
 out:
     qemu_set_fd_handler2(s, NULL, NULL, NULL, NULL);

migration-unix.c

@@ -149,7 +149,7 @@ static void unix_accept_incoming_migration(void *opaque)
     socklen_t addrlen = sizeof(addr);
     int s = (unsigned long)opaque;
     QEMUFile *f;
-    int c, ret;
+    int c;
 
     do {
         c = qemu_accept(s, (struct sockaddr *)&addr, &addrlen);
@@ -168,18 +168,7 @@ static void unix_accept_incoming_migration(void *opaque)
         goto out;
     }
 
-    ret = qemu_loadvm_state(f);
-    if (ret < 0) {
-        fprintf(stderr, "load of migration failed\n");
-        goto out_fopen;
-    }
-    qemu_announce_self();
-    DPRINTF("successfully loaded vm state\n");
-
-    if (autostart)
-        vm_start();
-
-out_fopen:
+    process_incoming_migration(f);
     qemu_fclose(f);
 out:
     qemu_set_fd_handler2(s, NULL, NULL, NULL, NULL);

migration.c

@@ -58,6 +58,19 @@ int qemu_start_incoming_migration(const char *uri)
     return ret;
 }
 
+void process_incoming_migration(QEMUFile *f)
+{
+    if (qemu_loadvm_state(f) < 0) {
+        fprintf(stderr, "load of migration failed\n");
+        exit(0);
+    }
+    qemu_announce_self();
+    DPRINTF("successfully loaded vm state\n");
+
+    if (autostart)
+        vm_start();
+}
+
 int do_migrate(Monitor *mon, const QDict *qdict, QObject **ret_data)
 {
     MigrationState *s = NULL;

migration.h

@@ -50,6 +50,8 @@ struct FdMigrationState
     void *opaque;
 };
 
+void process_incoming_migration(QEMUFile *f);
+
 int qemu_start_incoming_migration(const char *uri);
 
 int do_migrate(Monitor *mon, const QDict *qdict, QObject **ret_data);