include/migration/snapshot.h

   1 /*
   2  * QEMU snapshots
   3  *
   4  * Copyright (c) 2004-2008 Fabrice Bellard
   5  * Copyright (c) 2009-2015 Red Hat Inc
   6  *
   7  * Authors:
   8  *  Juan Quintela <quintela@redhat.com>
   9  *
  10  *
  11  * This work is licensed under the terms of the GNU GPL, version 2 or later.
  12  * See the COPYING file in the top-level directory.
  13  */
  14
  15 #ifndef QEMU_MIGRATION_SNAPSHOT_H
  16 #define QEMU_MIGRATION_SNAPSHOT_H
  17
  18 #include "qapi/qapi-builtin-types.h"
  19 #include "qapi/qapi-types-run-state.h"
  20
  21 /**
  22  * save_snapshot: Save an internal snapshot.
  23  * @name: name of internal snapshot
  24  * @overwrite: replace existing snapshot with @name
  25  * @vmstate: blockdev node name to store VM state in
  26  * @has_devices: whether to use explicit device list
  27  * @devices: explicit device list to snapshot
  28  * @errp: pointer to error object
  29  * On success, return %true.
  30  * On failure, store an error through @errp and return %false.
  31  */
  32 bool save_snapshot(const char *name, bool overwrite,
  33                    const char *vmstate,
  34                    bool has_devices, strList *devices,
  35                    Error **errp);
  36
  37 /**
  38  * load_snapshot: Load an internal snapshot.
  39  * @name: name of internal snapshot
  40  * @vmstate: blockdev node name to load VM state from
  41  * @has_devices: whether to use explicit device list
  42  * @devices: explicit device list to snapshot
  43  * @errp: pointer to error object
  44  * On success, return %true.
  45  * On failure, store an error through @errp and return %false.
  46  */
  47 bool load_snapshot(const char *name,
  48                    const char *vmstate,
  49                    bool has_devices, strList *devices,
  50                    Error **errp);
  51
  52 /**
  53  * delete_snapshot: Delete a snapshot.
  54  * @name: path to snapshot
  55  * @has_devices: whether to use explicit device list
  56  * @devices: explicit device list to snapshot
  57  * @errp: pointer to error object
  58  * On success, return %true.
  59  * On failure, store an error through @errp and return %false.
  60  */
  61 bool delete_snapshot(const char *name,
  62                     bool has_devices, strList *devices,
  63                     Error **errp);
  64
  65 /**
  66  * load_snapshot_resume: Restore runstate after loading snapshot.
  67  * @state: state to restore
  68  */
  69 void load_snapshot_resume(RunState state);
  70
  71 #endif