Merge branch 'for-upstream' of git://repo.or.cz/qemu/agraf
[qemu.git] / 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 <glib.h>
13 #include "qga/guest-agent-core.h"
14
15 struct GACommandState {
16 GSList *groups;
17 };
18
19 typedef struct GACommandGroup {
20 void (*init)(void);
21 void (*cleanup)(void);
22 } GACommandGroup;
23
24 /* handle init/cleanup for stateful guest commands */
25
26 void ga_command_state_add(GACommandState *cs,
27 void (*init)(void),
28 void (*cleanup)(void))
29 {
30 GACommandGroup *cg = g_malloc0(sizeof(GACommandGroup));
31 cg->init = init;
32 cg->cleanup = cleanup;
33 cs->groups = g_slist_append(cs->groups, cg);
34 }
35
36 static 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
46 void 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
52 static 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
62 void 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
68 GACommandState *ga_command_state_new(void)
69 {
70 GACommandState *cs = g_malloc0(sizeof(GACommandState));
71 cs->groups = NULL;
72 return cs;
73 }