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/*
* (C) Copyright 2013 Parallels, Inc. (www.parallels.com).
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the GNU Lesser General Public License
* (LGPL) version 2.1 which accompanies this distribution, and is available at
* http://www.gnu.org/licenses/lgpl-2.1.html
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, you can find it here:
* www.gnu.org/licenses/lgpl.html
*/
#ifndef __CRIU_LIB_H__
#define __CRIU_LIB_H__
#include <stdbool.h>
#include "version.h"
#ifdef __GNUG__
extern "C" {
#endif
enum criu_service_comm {
CRIU_COMM_SK,
CRIU_COMM_FD,
CRIU_COMM_BIN
};
enum criu_cg_mode {
CRIU_CG_MODE_IGNORE,
CRIU_CG_MODE_NONE,
CRIU_CG_MODE_PROPS,
CRIU_CG_MODE_SOFT,
CRIU_CG_MODE_FULL,
CRIU_CG_MODE_STRICT,
CRIU_CG_MODE_DEFAULT,
};
int criu_set_service_address(const char *path);
void criu_set_service_fd(int fd);
int criu_set_service_binary(const char *path);
/*
* Set opts to defaults. _Must_ be called first before using any functions from
* the list down below. 0 on success, -1 on fail.
*/
int criu_init_opts(void);
void criu_free_opts(void);
/*
* For backward compatibility with the mod_lsapi
*/
void criu_set_service_comm(enum criu_service_comm);
void criu_set_pid(int pid);
void criu_set_images_dir_fd(int fd); /* must be set for dump/restore */
int criu_set_parent_images(const char *path);
void criu_set_work_dir_fd(int fd);
void criu_set_leave_running(bool leave_running);
void criu_set_ext_unix_sk(bool ext_unix_sk);
int criu_add_unix_sk(unsigned int inode);
void criu_set_tcp_established(bool tcp_established);
void criu_set_tcp_skip_in_flight(bool tcp_skip_in_flight);
void criu_set_tcp_close(bool tcp_close);
void criu_set_weak_sysctls(bool val);
void criu_set_evasive_devices(bool evasive_devices);
void criu_set_shell_job(bool shell_job);
void criu_set_file_locks(bool file_locks);
void criu_set_track_mem(bool track_mem);
void criu_set_auto_dedup(bool auto_dedup);
void criu_set_force_irmap(bool force_irmap);
void criu_set_link_remap(bool link_remap);
void criu_set_log_level(int log_level);
void criu_set_root_only(bool root_only);
int criu_set_log_file(const char *log_file);
void criu_set_cpu_cap(unsigned int cap);
int criu_set_root(const char *root);
void criu_set_manage_cgroups(bool manage);
void criu_set_manage_cgroups_mode(enum criu_cg_mode mode);
int criu_set_freeze_cgroup(const char *name);
int criu_set_lsm_profile(const char *name);
void criu_set_timeout(unsigned int timeout);
void criu_set_auto_ext_mnt(bool val);
void criu_set_ext_sharing(bool val);
void criu_set_ext_masters(bool val);
int criu_set_exec_cmd(int argc, char *argv[]);
int criu_add_ext_mount(const char *key, const char *val);
int criu_add_veth_pair(const char *in, const char *out);
int criu_add_cg_root(const char *ctrl, const char *path);
int criu_add_enable_fs(const char *fs);
int criu_add_skip_mnt(const char *mnt);
void criu_set_ghost_limit(unsigned int limit);
int criu_add_irmap_path(const char *path);
int criu_add_inherit_fd(int fd, const char *key);
int criu_add_external(const char *key);
int criu_set_page_server_address_port(const char *address, int port);
/*
* The criu_notify_arg_t na argument is an opaque
* value that callbacks (cb-s) should pass into
* criu_notify_xxx() calls to fetch arbitrary values
* from notification. If the value is not available
* some non-existing one is reported.
*/
typedef struct _CriuNotify *criu_notify_arg_t;
void criu_set_notify_cb(int (*cb)(char *action, criu_notify_arg_t na));
/* Get pid of root task. 0 if not available */
int criu_notify_pid(criu_notify_arg_t na);
/* Here is a table of return values and errno's of functions
* from the list down below.
*
* Return value errno Description
* ----------------------------------------------------------------------------
* 0 undefined Success.
*
* >0 undefined Success(criu_restore() only).
*
* -BADE rpc err (0 for now) RPC has returned fail.
*
* -ECONNREFUSED errno Unable to connect to CRIU.
*
* -ECOMM errno Unable to send/recv msg to/from CRIU.
*
* -EINVAL undefined CRIU doesn't support this type of request.
* You should probably update CRIU.
*
* -EBADMSG undefined Unexpected response from CRIU.
* You should probably update CRIU.
*/
int criu_check(void);
int criu_dump(void);
int criu_restore(void);
int criu_restore_child(void);
/*
* Perform dumping but with preliminary iterations. Each
* time an iteration ends the ->more callback is called.
* The callback's return value is
* - positive -- one more iteration starts
* - zero -- final dump is performed and call exits
* - negative -- dump is aborted, the value is returned
* back from criu_dump_iters
*
* The @pi argument is an opaque value that caller may
* use to request pre-dump statistics (not yet implemented).
*/
typedef void *criu_predump_info;
int criu_dump_iters(int (*more)(criu_predump_info pi));
/*
* Same as the list above, but lets you have your very own options
* structure and lets you set individual options in it.
*/
typedef struct criu_opts criu_opts;
int criu_local_init_opts(criu_opts **opts);
void criu_local_free_opts(criu_opts *opts);
int criu_local_set_service_address(criu_opts *opts, const char *path);
void criu_local_set_service_fd(criu_opts *opts, int fd);
void criu_local_set_service_fd(criu_opts *opts, int fd);
void criu_local_set_pid(criu_opts *opts, int pid);
void criu_local_set_images_dir_fd(criu_opts *opts, int fd); /* must be set for dump/restore */
int criu_local_set_parent_images(criu_opts *opts, const char *path);
int criu_local_set_service_binary(criu_opts *opts, const char *path);
void criu_local_set_work_dir_fd(criu_opts *opts, int fd);
void criu_local_set_leave_running(criu_opts *opts, bool leave_running);
void criu_local_set_ext_unix_sk(criu_opts *opts, bool ext_unix_sk);
int criu_local_add_unix_sk(criu_opts *opts, unsigned int inode);
void criu_local_set_tcp_established(criu_opts *opts, bool tcp_established);
void criu_local_set_tcp_skip_in_flight(criu_opts *opts, bool tcp_skip_in_flight);
void criu_local_set_tcp_close(criu_opts *opts, bool tcp_close);
void criu_local_set_weak_sysctls(criu_opts *opts, bool val);
void criu_local_set_evasive_devices(criu_opts *opts, bool evasive_devices);
void criu_local_set_shell_job(criu_opts *opts, bool shell_job);
void criu_local_set_file_locks(criu_opts *opts, bool file_locks);
void criu_local_set_track_mem(criu_opts *opts, bool track_mem);
void criu_local_set_auto_dedup(criu_opts *opts, bool auto_dedup);
void criu_local_set_force_irmap(criu_opts *opts, bool force_irmap);
void criu_local_set_link_remap(criu_opts *opts, bool link_remap);
void criu_local_set_log_level(criu_opts *opts, int log_level);
void criu_local_set_root_only(criu_opts *opts, bool root_only);
int criu_local_set_log_file(criu_opts *opts, const char *log_file);
void criu_local_set_cpu_cap(criu_opts *opts, unsigned int cap);
int criu_local_set_root(criu_opts *opts, const char *root);
void criu_local_set_manage_cgroups(criu_opts *opts, bool manage);
void criu_local_set_manage_cgroups_mode(criu_opts *opts, enum criu_cg_mode mode);
int criu_local_set_freeze_cgroup(criu_opts *opts, const char *name);
int criu_local_set_lsm_profile(criu_opts *opts, const char *name);
void criu_local_set_timeout(criu_opts *opts, unsigned int timeout);
void criu_local_set_auto_ext_mnt(criu_opts *opts, bool val);
void criu_local_set_ext_sharing(criu_opts *opts, bool val);
void criu_local_set_ext_masters(criu_opts *opts, bool val);
int criu_local_set_exec_cmd(criu_opts *opts, int argc, char *argv[]);
int criu_local_add_ext_mount(criu_opts *opts, const char *key, const char *val);
int criu_local_add_veth_pair(criu_opts *opts, const char *in, const char *out);
int criu_local_add_cg_root(criu_opts *opts, const char *ctrl, const char *path);
int criu_local_add_enable_fs(criu_opts *opts, const char *fs);
int criu_local_add_skip_mnt(criu_opts *opts, const char *mnt);
void criu_local_set_ghost_limit(criu_opts *opts, unsigned int limit);
int criu_local_add_irmap_path(criu_opts *opts, const char *path);
int criu_local_add_cg_props(criu_opts *opts, const char *stream);
int criu_local_add_cg_props_file(criu_opts *opts, const char *path);
int criu_local_add_cg_dump_controller(criu_opts *opts, const char *name);
int criu_local_add_inherit_fd(criu_opts *opts, int fd, const char *key);
int criu_local_add_external(criu_opts *opts, const char *key);
int criu_local_set_page_server_address_port(criu_opts *opts, const char *address, int port);
void criu_local_set_notify_cb(criu_opts *opts, int (*cb)(char *action, criu_notify_arg_t na));
int criu_local_check(criu_opts *opts);
int criu_local_dump(criu_opts *opts);
int criu_local_restore(criu_opts *opts);
int criu_local_restore_child(criu_opts *opts);
int criu_local_dump_iters(criu_opts *opts, int (*more)(criu_predump_info pi));
#ifdef __GNUG__
}
#endif
#endif /* __CRIU_LIB_H__ */