LXR qemu/qga/guest-agent-command-state.c

   1/*
   2 * QEMU Guest Agent command state interfaces
   3 *
   4 * Copyright IBM Corp. 2011
   5 *
   6 * Authors:
   7 *  Michael Roth      <mdroth@linux.vnet.ibm.com>
   8 *
   9 * This work is licensed under the terms of the GNU GPL, version 2 or later.
  10 * See the COPYING file in the top-level directory.
  11 */
  12#include "qemu/osdep.h"
  13#include <glib.h>
  14#include "qga/guest-agent-core.h"
  15
  16struct GACommandState {
  17    GSList *groups;
  18};
  19
  20typedef struct GACommandGroup {
  21    void (*init)(void);
  22    void (*cleanup)(void);
  23} GACommandGroup;
  24
  25/* handle init/cleanup for stateful guest commands */
  26
  27void ga_command_state_add(GACommandState *cs,
  28                          void (*init)(void),
  29                          void (*cleanup)(void))
  30{
  31    GACommandGroup *cg = g_new0(GACommandGroup, 1);
  32    cg->init = init;
  33    cg->cleanup = cleanup;
  34    cs->groups = g_slist_append(cs->groups, cg);
  35}
  36
  37static void ga_command_group_init(gpointer opaque, gpointer unused)
  38{
  39    GACommandGroup *cg = opaque;
  40
  41    g_assert(cg);
  42    if (cg->init) {
  43        cg->init();
  44    }
  45}
  46
  47void ga_command_state_init_all(GACommandState *cs)
  48{
  49    g_assert(cs);
  50    g_slist_foreach(cs->groups, ga_command_group_init, NULL);
  51}
  52
  53static void ga_command_group_cleanup(gpointer opaque, gpointer unused)
  54{
  55    GACommandGroup *cg = opaque;
  56
  57    g_assert(cg);
  58    if (cg->cleanup) {
  59        cg->cleanup();
  60    }
  61}
  62
  63void ga_command_state_cleanup_all(GACommandState *cs)
  64{
  65    g_assert(cs);
  66    g_slist_foreach(cs->groups, ga_command_group_cleanup, NULL);
  67}
  68
  69GACommandState *ga_command_state_new(void)
  70{
  71    GACommandState *cs = g_new0(GACommandState, 1);
  72    cs->groups = NULL;
  73    return cs;
  74}
  75