int main(int argc, char **argv) { int pid, ret, fd, p[2]; printf("--- Start loop ---\n"); pipe(p); pid = fork(); if (pid < 0) { perror("Can't"); return -1; } if (!pid) { printf(" `- loop: initializing\n"); if (setsid() < 0) exit(1); if (signal(SIGUSR1, sh) == SIG_ERR) exit(1); close(0); close(1); close(2); close(p[0]); ret = SUCC_ECODE; write(p[1], &ret, sizeof(ret)); close(p[1]); while (!stop) sleep(1); exit(SUCC_ECODE); } close(p[1]); /* Wait for kid to start */ ret = -1; read(p[0], &ret, sizeof(ret)); if (ret != SUCC_ECODE) { printf("Error starting loop\n"); goto err; } /* Wait for pipe to get closed, then dump */ read(p[0], &ret, 1); close(p[0]); printf("--- Dump loop ---\n"); criu_init_opts(); criu_set_service_address(argv[1]); criu_set_pid(pid); criu_set_log_file("dump.log"); criu_set_log_level(4); fd = open(argv[2], O_DIRECTORY); criu_set_images_dir_fd(fd); ret = criu_dump(); if (ret < 0) { what_err_ret_mean(ret); kill(pid, SIGKILL); goto err; } printf(" `- Dump succeeded\n"); waitpid(pid, NULL, 0); printf("--- Restore loop ---\n"); criu_init_opts(); criu_set_log_level(4); criu_set_log_file("restore.log"); criu_set_images_dir_fd(fd); pid = criu_restore_child(); if (pid <= 0) { what_err_ret_mean(pid); return -1; } printf(" `- Restore returned pid %d\n", pid); kill(pid, SIGUSR1); err: if (waitpid(pid, &ret, 0) < 0) { perror(" Can't wait kid"); return -1; } return chk_exit(ret, SUCC_ECODE); }
int main(int argc, char *argv[]) { int ret, fd; criu_set_service_address("criu_service.socket"); puts("--- Check ---"); ret = criu_check(); if (ret < 0) { what_err_ret_mean(ret); return -1; } else puts("Success"); puts("--- Dump loop ---"); criu_init_opts(); criu_set_pid(atoi(argv[1])); criu_set_log_file("dump.log"); criu_set_log_level(4); fd = open("imgs_loop", O_DIRECTORY); criu_set_images_dir_fd(fd); ret = criu_dump(); if (ret < 0) { what_err_ret_mean(ret); return -1; } else if (ret == 0) puts("Success"); puts("--- Restore loop ---"); criu_init_opts(); criu_set_log_level(4); criu_set_log_file("restore.log"); criu_set_images_dir_fd(fd); ret = criu_restore(); if (ret < 0) { what_err_ret_mean(ret); return -1; } else if (ret > 0) { puts("Success"); printf("pid %d\n", ret); } puts("--- Dump myself ---"); criu_init_opts(); criu_set_leave_running(true); criu_set_shell_job(true); criu_set_images_dir_fd(open("imgs_test", O_DIRECTORY)); ret = criu_dump(); if (ret < 0) { what_err_ret_mean(ret); return -1; } else { puts("Success"); if (ret == 1) puts("Restored"); } return 0; }