LXR qemu/migration/exec.c

   1/*
   2 * QEMU live migration
   3 *
   4 * Copyright IBM, Corp. 2008
   5 * Copyright Dell MessageOne 2008
   6 * Copyright Red Hat, Inc. 2015-2016
   7 *
   8 * Authors:
   9 *  Anthony Liguori   <aliguori@us.ibm.com>
  10 *  Charles Duffy     <charles_duffy@messageone.com>
  11 *  Daniel P. Berrange <berrange@redhat.com>
  12 *
  13 * This work is licensed under the terms of the GNU GPL, version 2.  See
  14 * the COPYING file in the top-level directory.
  15 *
  16 * Contributions after 2012-01-13 are licensed under the terms of the
  17 * GNU GPL, version 2 or (at your option) any later version.
  18 */
  19
  20#include "qemu/osdep.h"
  21#include "channel.h"
  22#include "exec.h"
  23#include "migration.h"
  24#include "io/channel-command.h"
  25#include "trace.h"
  26
  27
  28void exec_start_outgoing_migration(MigrationState *s, const char *command, Error **errp)
  29{
  30    QIOChannel *ioc;
  31    const char *argv[] = { "/bin/sh", "-c", command, NULL };
  32
  33    trace_migration_exec_outgoing(command);
  34    ioc = QIO_CHANNEL(qio_channel_command_new_spawn(argv,
  35                                                    O_RDWR,
  36                                                    errp));
  37    if (!ioc) {
  38        return;
  39    }
  40
  41    qio_channel_set_name(ioc, "migration-exec-outgoing");
  42    migration_channel_connect(s, ioc, NULL, NULL);
  43    object_unref(OBJECT(ioc));
  44}
  45
  46static gboolean exec_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 exec_start_incoming_migration(const char *command, Error **errp)
  56{
  57    QIOChannel *ioc;
  58    const char *argv[] = { "/bin/sh", "-c", command, NULL };
  59
  60    trace_migration_exec_incoming(command);
  61    ioc = QIO_CHANNEL(qio_channel_command_new_spawn(argv,
  62                                                    O_RDWR,
  63                                                    errp));
  64    if (!ioc) {
  65        return;
  66    }
  67
  68    qio_channel_set_name(ioc, "migration-exec-incoming");
  69    qio_channel_add_watch_full(ioc, G_IO_IN,
  70                               exec_accept_incoming_migration,
  71                               NULL, NULL,
  72                               g_main_context_get_thread_default());
  73}
  74