cachepc-qemu

Fork of AMDESE/qemu with changes for cachepc side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-qemu
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guest-agent-command-state.c (1712B)

      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}