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de08c606 WX |
1 | /* |
2 | * Block layer snapshot related functions | |
3 | * | |
4 | * Copyright (c) 2003-2008 Fabrice Bellard | |
5 | * | |
6 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
7 | * of this software and associated documentation files (the "Software"), to deal | |
8 | * in the Software without restriction, including without limitation the rights | |
9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
10 | * copies of the Software, and to permit persons to whom the Software is | |
11 | * furnished to do so, subject to the following conditions: | |
12 | * | |
13 | * The above copyright notice and this permission notice shall be included in | |
14 | * all copies or substantial portions of the Software. | |
15 | * | |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
22 | * THE SOFTWARE. | |
23 | */ | |
24 | ||
25 | #ifndef SNAPSHOT_H | |
26 | #define SNAPSHOT_H | |
27 | ||
cf3a74c9 | 28 | #include "qapi/qapi-builtin-types.h" |
8c116b0e WX |
29 | |
30 | #define SNAPSHOT_OPT_BASE "snapshot." | |
31 | #define SNAPSHOT_OPT_ID "snapshot.id" | |
32 | #define SNAPSHOT_OPT_NAME "snapshot.name" | |
33 | ||
34 | extern QemuOptsList internal_snapshot_opts; | |
de08c606 WX |
35 | |
36 | typedef struct QEMUSnapshotInfo { | |
37 | char id_str[128]; /* unique snapshot id */ | |
38 | /* the following fields are informative. They are not needed for | |
39 | the consistency of the snapshot */ | |
40 | char name[256]; /* user chosen name */ | |
41 | uint64_t vm_state_size; /* VM state info size */ | |
42 | uint32_t date_sec; /* UTC date of the snapshot */ | |
43 | uint32_t date_nsec; | |
44 | uint64_t vm_clock_nsec; /* VM clock relative to boot */ | |
b39847a5 | 45 | uint64_t icount; /* record/replay step */ |
de08c606 WX |
46 | } QEMUSnapshotInfo; |
47 | ||
48 | int bdrv_snapshot_find(BlockDriverState *bs, QEMUSnapshotInfo *sn_info, | |
49 | const char *name); | |
2ea1dd75 WX |
50 | bool bdrv_snapshot_find_by_id_and_name(BlockDriverState *bs, |
51 | const char *id, | |
52 | const char *name, | |
53 | QEMUSnapshotInfo *sn_info, | |
54 | Error **errp); | |
de08c606 WX |
55 | int bdrv_can_snapshot(BlockDriverState *bs); |
56 | int bdrv_snapshot_create(BlockDriverState *bs, | |
57 | QEMUSnapshotInfo *sn_info); | |
58 | int bdrv_snapshot_goto(BlockDriverState *bs, | |
0b62bcbc KW |
59 | const char *snapshot_id, |
60 | Error **errp); | |
a89d89d3 WX |
61 | int bdrv_snapshot_delete(BlockDriverState *bs, |
62 | const char *snapshot_id, | |
63 | const char *name, | |
64 | Error **errp); | |
de08c606 WX |
65 | int bdrv_snapshot_list(BlockDriverState *bs, |
66 | QEMUSnapshotInfo **psn_info); | |
67 | int bdrv_snapshot_load_tmp(BlockDriverState *bs, | |
7b4c4781 WX |
68 | const char *snapshot_id, |
69 | const char *name, | |
70 | Error **errp); | |
71 | int bdrv_snapshot_load_tmp_by_id_or_name(BlockDriverState *bs, | |
72 | const char *id_or_name, | |
73 | Error **errp); | |
e9ff957a DL |
74 | |
75 | ||
76 | /* Group operations. All block drivers are involved. | |
77 | * These functions will properly handle dataplane (take aio_context_acquire | |
78 | * when appropriate for appropriate block drivers */ | |
79 | ||
cf3a74c9 DB |
80 | bool bdrv_all_can_snapshot(bool has_devices, strList *devices, |
81 | Error **errp); | |
82 | int bdrv_all_delete_snapshot(const char *name, | |
83 | bool has_devices, strList *devices, | |
84 | Error **errp); | |
85 | int bdrv_all_goto_snapshot(const char *name, | |
86 | bool has_devices, strList *devices, | |
87 | Error **errp); | |
3d3e9b1f DB |
88 | int bdrv_all_has_snapshot(const char *name, |
89 | bool has_devices, strList *devices, | |
90 | Error **errp); | |
a9085f9b DL |
91 | int bdrv_all_create_snapshot(QEMUSnapshotInfo *sn, |
92 | BlockDriverState *vm_state_bs, | |
93 | uint64_t vm_state_size, | |
cf3a74c9 DB |
94 | bool has_devices, |
95 | strList *devices, | |
e26f98e2 | 96 | Error **errp); |
e9ff957a | 97 | |
c22d644c DB |
98 | BlockDriverState *bdrv_all_find_vmstate_bs(const char *vmstate_bs, |
99 | bool has_devices, strList *devices, | |
cf3a74c9 | 100 | Error **errp); |
7cb14481 | 101 | |
de08c606 | 102 | #endif |