--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/symbian-qemu-0.9.1-12/qemu-symbian-svp/migration-tcp.c	Fri Jul 31 15:01:17 2009 +0100
@@ -0,0 +1,217 @@
+/*
+ * QEMU live migration
+ *
+ * Copyright IBM, Corp. 2008
+ *
+ * Authors:
+ *  Anthony Liguori   <aliguori@us.ibm.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2.  See
+ * the COPYING file in the top-level directory.
+ *
+ */
+
+#include "qemu-common.h"
+#include "qemu_socket.h"
+#include "migration.h"
+#include "qemu-char.h"
+#include "sysemu.h"
+#include "console.h"
+#include "buffered_file.h"
+#include "block.h"
+
+//#define DEBUG_MIGRATION_TCP
+
+#ifdef DEBUG_MIGRATION_TCP
+#define dprintf(fmt, ...) \
+    do { printf("migration-tcp: " fmt, ## __VA_ARGS__); } while (0)
+#else
+#define dprintf(fmt, ...) \
+    do { } while (0)
+#endif
+
+static int socket_errno(FdMigrationState *s)
+{
+    return socket_error();
+}
+
+static int socket_write(FdMigrationState *s, const void * buf, size_t size)
+{
+    return send(s->fd, buf, size, 0);
+}
+
+static int tcp_close(FdMigrationState *s)
+{
+    dprintf("tcp_close\n");
+    if (s->fd != -1) {
+        close(s->fd);
+        s->fd = -1;
+    }
+    return 0;
+}
+
+
+static void tcp_wait_for_connect(void *opaque)
+{
+    FdMigrationState *s = opaque;
+    int val, ret;
+    socklen_t valsize = sizeof(val);
+
+    dprintf("connect completed\n");
+    do {
+        ret = getsockopt(s->fd, SOL_SOCKET, SO_ERROR, &val, &valsize);
+    } while (ret == -1 && (s->get_error(s)) == EINTR);
+
+    if (ret < 0) {
+        migrate_fd_error(s);
+        return;
+    }
+
+    qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
+
+    if (val == 0)
+        migrate_fd_connect(s);
+    else {
+        dprintf("error connecting %d\n", val);
+        migrate_fd_error(s);
+    }
+}
+
+MigrationState *tcp_start_outgoing_migration(const char *host_port,
+                                             int64_t bandwidth_limit,
+                                             int async)
+{
+    struct sockaddr_in addr;
+    FdMigrationState *s;
+    int ret;
+
+    if (parse_host_port(&addr, host_port) < 0)
+        return NULL;
+
+    s = qemu_mallocz(sizeof(*s));
+    if (s == NULL)
+        return NULL;
+
+    s->get_error = socket_errno;
+    s->write = socket_write;
+    s->close = tcp_close;
+    s->mig_state.cancel = migrate_fd_cancel;
+    s->mig_state.get_status = migrate_fd_get_status;
+    s->mig_state.release = migrate_fd_release;
+
+    s->state = MIG_STATE_ACTIVE;
+    s->detach = !async;
+    s->bandwidth_limit = bandwidth_limit;
+    s->fd = socket(PF_INET, SOCK_STREAM, 0);
+    if (s->fd == -1) {
+        qemu_free(s);
+        return NULL;
+    }
+
+    socket_set_nonblock(s->fd);
+
+    if (s->detach == 1) {
+        dprintf("detaching from monitor\n");
+        monitor_suspend();
+        s->detach = 2;
+    }
+
+    do {
+        ret = connect(s->fd, (struct sockaddr *)&addr, sizeof(addr));
+        if (ret == -1)
+            ret = -(s->get_error(s));
+
+        if (ret == -EINPROGRESS || ret == -EWOULDBLOCK)
+            qemu_set_fd_handler2(s->fd, NULL, NULL, tcp_wait_for_connect, s);
+    } while (ret == -EINTR);
+
+    if (ret < 0 && ret != -EINPROGRESS && ret != -EWOULDBLOCK) {
+        dprintf("connect failed\n");
+        close(s->fd);
+        qemu_free(s);
+        return NULL;
+    } else if (ret >= 0)
+        migrate_fd_connect(s);
+
+    return &s->mig_state;
+}
+
+static void tcp_accept_incoming_migration(void *opaque)
+{
+    struct sockaddr_in addr;
+    socklen_t addrlen = sizeof(addr);
+    int s = (unsigned long)opaque;
+    QEMUFile *f;
+    int c, ret;
+
+    do {
+        c = accept(s, (struct sockaddr *)&addr, &addrlen);
+    } while (c == -1 && socket_error() == EINTR);
+
+    dprintf("accepted migration\n");
+
+    if (c == -1) {
+        fprintf(stderr, "could not accept migration connection\n");
+        return;
+    }
+
+    f = qemu_fopen_socket(c);
+    if (f == NULL) {
+        fprintf(stderr, "could not qemu_fopen socket\n");
+        goto out;
+    }
+
+    vm_stop(0); /* just in case */
+    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");
+
+    /* we've successfully migrated, close the server socket */
+    qemu_set_fd_handler2(s, NULL, NULL, NULL, NULL);
+    close(s);
+
+    vm_start();
+
+out_fopen:
+    qemu_fclose(f);
+out:
+    close(c);
+}
+
+int tcp_start_incoming_migration(const char *host_port)
+{
+    struct sockaddr_in addr;
+    int val;
+    int s;
+
+    if (parse_host_port(&addr, host_port) < 0) {
+        fprintf(stderr, "invalid host/port combination: %s\n", host_port);
+        return -EINVAL;
+    }
+
+    s = socket(PF_INET, SOCK_STREAM, 0);
+    if (s == -1)
+        return -socket_error();
+
+    val = 1;
+    setsockopt(s, SOL_SOCKET, SO_REUSEADDR, (const char *)&val, sizeof(val));
+
+    if (bind(s, (struct sockaddr *)&addr, sizeof(addr)) == -1)
+        goto err;
+
+    if (listen(s, 1) == -1)
+        goto err;
+
+    qemu_set_fd_handler2(s, NULL, tcp_accept_incoming_migration, NULL,
+                         (void *)(unsigned long)s);
+
+    return 0;
+
+err:
+    close(s);
+    return -socket_error();
+}