1 /* 2 * Copyright (c) 2021, 2024 Oracle and/or its affiliates. 3 * 4 * This work is licensed under the terms of the GNU GPL, version 2 or later. 5 * See the COPYING file in the top-level directory. 6 */ 7 8 #ifndef MIGRATION_CPR_H 9 #define MIGRATION_CPR_H 10 11 #include "qapi/qapi-types-migration.h" 12 #include "qemu/queue.h" 13 14 #define MIG_MODE_NONE -1 15 16 #define QEMU_CPR_FILE_MAGIC 0x51435052 17 #define QEMU_CPR_FILE_VERSION 0x00000001 18 #define CPR_STATE "CprState" 19 20 typedef QLIST_HEAD(CprFdList, CprFd) CprFdList; 21 typedef QLIST_HEAD(CprVFIODeviceList, CprVFIODevice) CprVFIODeviceList; 22 23 typedef struct CprState { 24 CprFdList fds; 25 CprVFIODeviceList vfio_devices; 26 } CprState; 27 28 extern CprState cpr_state; 29 30 void cpr_save_fd(const char *name, int id, int fd); 31 void cpr_delete_fd(const char *name, int id); 32 int cpr_find_fd(const char *name, int id); 33 void cpr_resave_fd(const char *name, int id, int fd); 34 int cpr_open_fd(const char *path, int flags, const char *name, int id, 35 Error **errp); 36 37 MigMode cpr_get_incoming_mode(void); 38 void cpr_set_incoming_mode(MigMode mode); 39 bool cpr_is_incoming(void); 40 41 int cpr_state_save(MigrationChannel *channel, Error **errp); 42 int cpr_state_load(MigrationChannel *channel, Error **errp); 43 void cpr_state_close(void); 44 struct QIOChannel *cpr_state_ioc(void); 45 46 bool cpr_incoming_needed(void *opaque); 47 int cpr_get_fd_param(const char *name, const char *fdname, int index, 48 Error **errp); 49 50 QEMUFile *cpr_transfer_output(MigrationChannel *channel, Error **errp); 51 QEMUFile *cpr_transfer_input(MigrationChannel *channel, Error **errp); 52 53 #endif 54