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 28 #include "qemu-common.h" 29 #include "qapi/error.h" 30 31 typedef struct QEMUSnapshotInfo { 32 char id_str[128]; /* unique snapshot id */ 33 /* the following fields are informative. They are not needed for 34 the consistency of the snapshot */ 35 char name[256]; /* user chosen name */ 36 uint64_t vm_state_size; /* VM state info size */ 37 uint32_t date_sec; /* UTC date of the snapshot */ 38 uint32_t date_nsec; 39 uint64_t vm_clock_nsec; /* VM clock relative to boot */ 40 } QEMUSnapshotInfo; 41 42 int bdrv_snapshot_find(BlockDriverState *bs, QEMUSnapshotInfo *sn_info, 43 const char *name); 44 bool bdrv_snapshot_find_by_id_and_name(BlockDriverState *bs, 45 const char *id, 46 const char *name, 47 QEMUSnapshotInfo *sn_info, 48 Error **errp); 49 int bdrv_can_snapshot(BlockDriverState *bs); 50 int bdrv_snapshot_create(BlockDriverState *bs, 51 QEMUSnapshotInfo *sn_info); 52 int bdrv_snapshot_goto(BlockDriverState *bs, 53 const char *snapshot_id); 54 int bdrv_snapshot_delete(BlockDriverState *bs, 55 const char *snapshot_id, 56 const char *name, 57 Error **errp); 58 void bdrv_snapshot_delete_by_id_or_name(BlockDriverState *bs, 59 const char *id_or_name, 60 Error **errp); 61 int bdrv_snapshot_list(BlockDriverState *bs, 62 QEMUSnapshotInfo **psn_info); 63 int bdrv_snapshot_load_tmp(BlockDriverState *bs, 64 const char *snapshot_name); 65 #endif 66