[2/5] Factorize common migration incoming code

diff --git a/migration-exec.c b/migration-exec.c
index 5435827..07af11a 100644
--- a/migration-exec.c
+++ b/migration-exec.c
@@ -111,20 +111,8 @@  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);
 }
diff --git a/migration-fd.c b/migration-fd.c
index 0abd372..6d14505 100644
--- a/migration-fd.c
+++ b/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);
 }
diff --git a/migration-tcp.c b/migration-tcp.c
index 95ce722..20f2e37 100644
--- a/migration-tcp.c
+++ b/migration-tcp.c
@@ -143,7 +143,7 @@  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);
@@ -162,18 +162,7 @@  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);
diff --git a/migration-unix.c b/migration-unix.c
index 49de1b9..57232c0 100644
--- a/migration-unix.c
+++ b/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);
diff --git a/migration.c b/migration.c
index cf30a8e..6ab5d90 100644
--- a/migration.c
+++ b/migration.c
@@ -54,6 +54,19 @@  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;
diff --git a/migration.h b/migration.h
index dd423a1..017e9c3 100644
--- a/migration.h
+++ b/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);