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/*
* QEMU live migration via generic fd
*
* Copyright Red Hat, Inc. 2009-2016
*
* Authors:
* Chris Lalancette <clalance@redhat.com>
* Daniel P. Berrange <berrange@redhat.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/osdep.h"
#include "channel.h"
#include "fd.h"
#include "file.h"
#include "migration.h"
#include "monitor/monitor.h"
#include "qemu/error-report.h"
#include "qemu/sockets.h"
#include "io/channel-util.h"
#include "trace.h"
void fd_start_outgoing_migration(MigrationState *s, const char *fdname, Error **errp)
{
QIOChannel *ioc;
int fd = monitor_get_fd(monitor_cur(), fdname, errp);
if (fd == -1) {
return;
}
if (!fd_is_socket(fd)) {
warn_report("fd: migration to a file is deprecated."
" Use file: instead.");
}
trace_migration_fd_outgoing(fd);
ioc = qio_channel_new_fd(fd, errp);
if (!ioc) {
close(fd);
return;
}
qio_channel_set_name(ioc, "migration-fd-outgoing");
migration_channel_connect(s, ioc, NULL, NULL);
object_unref(OBJECT(ioc));
}
static gboolean fd_accept_incoming_migration(QIOChannel *ioc,
GIOCondition condition,
gpointer opaque)
{
migration_channel_process_incoming(ioc);
object_unref(OBJECT(ioc));
return G_SOURCE_REMOVE;
}
void fd_start_incoming_migration(const char *fdname, Error **errp)
{
QIOChannel *ioc;
int fd = monitor_fd_param(monitor_cur(), fdname, errp);
if (fd == -1) {
return;
}
if (!fd_is_socket(fd)) {
warn_report("fd: migration to a file is deprecated."
" Use file: instead.");
}
trace_migration_fd_incoming(fd);
ioc = qio_channel_new_fd(fd, errp);
if (!ioc) {
close(fd);
return;
}
qio_channel_set_name(ioc, "migration-fd-incoming");
qio_channel_add_watch_full(ioc, G_IO_IN,
fd_accept_incoming_migration,
NULL, NULL,
g_main_context_get_thread_default());
}
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