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 "guest-agent-core.h"
  14
  15struct GACommandState {
  16    GSList *groups;
  17};
  18
  19typedef struct GACommandGroup {
  20    void (*init)(void);
  21    void (*cleanup)(void);
  22} GACommandGroup;
  23
  24/* handle init/cleanup for stateful guest commands */
  25
  26void ga_command_state_add(GACommandState *cs,
  27                          void (*init)(void),
  28                          void (*cleanup)(void))
  29{
  30    GACommandGroup *cg = g_new0(GACommandGroup, 1);
  31    cg->init = init;
  32    cg->cleanup = cleanup;
  33    cs->groups = g_slist_append(cs->groups, cg);
  34}
  35
  36static void ga_command_group_init(gpointer opaque, gpointer unused)
  37{
  38    GACommandGroup *cg = opaque;
  39
  40    g_assert(cg);
  41    if (cg->init) {
  42        cg->init();
  43    }
  44}
  45
  46void ga_command_state_init_all(GACommandState *cs)
  47{
  48    g_assert(cs);
  49    g_slist_foreach(cs->groups, ga_command_group_init, NULL);
  50}
  51
  52static void ga_command_group_cleanup(gpointer opaque, gpointer unused)
  53{
  54    GACommandGroup *cg = opaque;
  55
  56    g_assert(cg);
  57    if (cg->cleanup) {
  58        cg->cleanup();
  59    }
  60}
  61
  62void ga_command_state_cleanup_all(GACommandState *cs)
  63{
  64    g_assert(cs);
  65    g_slist_foreach(cs->groups, ga_command_group_cleanup, NULL);
  66}
  67
  68GACommandState *ga_command_state_new(void)
  69{
  70    GACommandState *cs = g_new0(GACommandState, 1);
  71    cs->groups = NULL;
  72    return cs;
  73}
  74
  75void ga_command_state_free(GACommandState *cs)
  76{
  77    g_slist_free_full(cs->groups, g_free);
  78    g_free(cs);
  79}
  80