Add qemu 2.4.0

[kvmfornfv.git] / qemu / migration / exec.c

diff --git a/qemu/migration/exec.c b/qemu/migration/exec.c
new file mode 100644 (file)
index 0000000..8406d2b
--- /dev/null
+++ b/qemu/migration/exec.c
@@ -0,0 +1,69 @@
+/*
+ * QEMU live migration
+ *
+ * Copyright IBM, Corp. 2008
+ * Copyright Dell MessageOne 2008
+ *
+ * Authors:
+ *  Anthony Liguori   <aliguori@us.ibm.com>
+ *  Charles Duffy     <charles_duffy@messageone.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2.  See
+ * the COPYING file in the top-level directory.
+ *
+ * Contributions after 2012-01-13 are licensed under the terms of the
+ * GNU GPL, version 2 or (at your option) any later version.
+ */
+
+#include "qemu-common.h"
+#include "qemu/sockets.h"
+#include "qemu/main-loop.h"
+#include "migration/migration.h"
+#include "migration/qemu-file.h"
+#include "block/block.h"
+#include <sys/types.h>
+#include <sys/wait.h>
+
+//#define DEBUG_MIGRATION_EXEC
+
+#ifdef DEBUG_MIGRATION_EXEC
+#define DPRINTF(fmt, ...) \
+    do { printf("migration-exec: " fmt, ## __VA_ARGS__); } while (0)
+#else
+#define DPRINTF(fmt, ...) \
+    do { } while (0)
+#endif
+
+void exec_start_outgoing_migration(MigrationState *s, const char *command, Error **errp)
+{
+    s->file = qemu_popen_cmd(command, "w");
+    if (s->file == NULL) {
+        error_setg_errno(errp, errno, "failed to popen the migration target");
+        return;
+    }
+
+    migrate_fd_connect(s);
+}
+
+static void exec_accept_incoming_migration(void *opaque)
+{
+    QEMUFile *f = opaque;
+
+    qemu_set_fd_handler(qemu_get_fd(f), NULL, NULL, NULL);
+    process_incoming_migration(f);
+}
+
+void exec_start_incoming_migration(const char *command, Error **errp)
+{
+    QEMUFile *f;
+
+    DPRINTF("Attempting to start an incoming migration\n");
+    f = qemu_popen_cmd(command, "r");
+    if(f == NULL) {
+        error_setg_errno(errp, errno, "failed to popen the migration source");
+        return;
+    }
+
+    qemu_set_fd_handler(qemu_get_fd(f), exec_accept_incoming_migration, NULL,
+                        f);
+}