cachepc-qemu

Fork of AMDESE/qemu with changes for cachepc side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-qemu
Log | Files | Refs | Submodules | LICENSE | sfeed.txt

fd.c (2029B)

      1/*
      2 * QEMU live migration via generic fd
      3 *
      4 * Copyright Red Hat, Inc. 2009-2016
      5 *
      6 * Authors:
      7 *  Chris Lalancette <clalance@redhat.com>
      8 *  Daniel P. Berrange <berrange@redhat.com>
      9 *
     10 * This work is licensed under the terms of the GNU GPL, version 2.  See
     11 * the COPYING file in the top-level directory.
     12 *
     13 * Contributions after 2012-01-13 are licensed under the terms of the
     14 * GNU GPL, version 2 or (at your option) any later version.
     15 */
     16
     17#include "qemu/osdep.h"
     18#include "channel.h"
     19#include "fd.h"
     20#include "migration.h"
     21#include "monitor/monitor.h"
     22#include "io/channel-util.h"
     23#include "trace.h"
     24
     25
     26void fd_start_outgoing_migration(MigrationState *s, const char *fdname, Error **errp)
     27{
     28    QIOChannel *ioc;
     29    int fd = monitor_get_fd(monitor_cur(), fdname, errp);
     30    if (fd == -1) {
     31        return;
     32    }
     33
     34    trace_migration_fd_outgoing(fd);
     35    ioc = qio_channel_new_fd(fd, errp);
     36    if (!ioc) {
     37        close(fd);
     38        return;
     39    }
     40
     41    qio_channel_set_name(QIO_CHANNEL(ioc), "migration-fd-outgoing");
     42    migration_channel_connect(s, ioc, NULL, NULL);
     43    object_unref(OBJECT(ioc));
     44}
     45
     46static gboolean fd_accept_incoming_migration(QIOChannel *ioc,
     47                                             GIOCondition condition,
     48                                             gpointer opaque)
     49{
     50    migration_channel_process_incoming(ioc);
     51    object_unref(OBJECT(ioc));
     52    return G_SOURCE_REMOVE;
     53}
     54
     55void fd_start_incoming_migration(const char *fdname, Error **errp)
     56{
     57    QIOChannel *ioc;
     58    int fd = monitor_fd_param(monitor_cur(), fdname, errp);
     59    if (fd == -1) {
     60        return;
     61    }
     62
     63    trace_migration_fd_incoming(fd);
     64
     65    ioc = qio_channel_new_fd(fd, errp);
     66    if (!ioc) {
     67        close(fd);
     68        return;
     69    }
     70
     71    qio_channel_set_name(QIO_CHANNEL(ioc), "migration-fd-incoming");
     72    qio_channel_add_watch_full(ioc, G_IO_IN,
     73                               fd_accept_incoming_migration,
     74                               NULL, NULL,
     75                               g_main_context_get_thread_default());
     76}