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include
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criu
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criu.h
/* * (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__ */
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