/* SPDX-License-Identifier: GPL-2.0 */ /* * Copyright (c) 2025, Google LLC. * Pasha Tatashin <pasha.tatashin@soleen.com> * * Utility functions for LUO kselftests. */ #ifndef SELFTESTS_LIVEUPDATE_LIB_LIVEUPDATE_H#define SELFTESTS_LIVEUPDATE_LIB_LIVEUPDATE_H #include <errno.h>#include <string.h>#include <linux/liveupdate.h>#include "../../../kselftest.h" #define LUO_DEVICE "/dev/liveupdate" #define fail_exit(fmt, ...)						\	ksft_exit_fail_msg("[%s:%d] " fmt " (errno: %s)\n",	\			   __func__, __LINE__, ##__VA_ARGS__, strerror(errno)) int luo_open_device(void);int luo_create_session(int luo_fd, const char *name);int luo_retrieve_session(int luo_fd, const char *name);int luo_session_finish(int session_fd);int luo_get_session_name(int session_fd, char *name, size_t name_len); int luo_ensure_nofile_limit(long min_limit);int luo_session_preserve_fd(int session_fd, int fd, __u64 token);int luo_session_retrieve_fd(int session_fd, __u64 token); int create_and_preserve_memfd(int session_fd, int token, const char *data);int restore_and_verify_memfd(int session_fd, int token, const char *expected_data); void create_state_file(int luo_fd, const char *session_name, int token,		       int next_stage);void restore_and_read_stage(int state_session_fd, int token, int *stage); void daemonize_and_wait(void); typedef void (*luo_test_stage1_fn)(int luo_fd);typedef void (*luo_test_stage2_fn)(int luo_fd, int state_session_fd); int luo_test(int argc, char *argv[], const char *state_session_name,	     luo_test_stage1_fn stage1, luo_test_stage2_fn stage2); #endif /* SELFTESTS_LIVEUPDATE_LIB_LIVEUPDATE_H */