BPI-CM9-Linux/amlbian/scripts/bt/files/monitor/amlbt_fwlog.c

/******************************************************************************
 *
 *  Copyright (C) 2021-2021 amlogic Corporation
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at:
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 ******************************************************************************/

#define LOG_TAG "amlbt_fw"

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>

#include <unistd.h>
#include <fcntl.h>
#include <dirent.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <sys/poll.h>
#include <sys/syscall.h>
#include <sys/prctl.h>
#include <asm/ioctl.h>

#include <termios.h>
#include <time.h>
#include <zlib.h>
#include <pthread.h>

#include "amlbt_fwlog.h"

typedef struct {
	uint32_t fsize;       // Based on 1M multiples
	uint32_t data_cnt;
	uint32_t cur_data_cnt;
	uint32_t files_max_cnt; // default gzip compress file number
	uint32_t cur_files_cnt;
	char fdir[FWLOG_DIR_MAX_SIZE];
	char fpath[FWLOG_PATH_MAX_SIZE];
	char fname_prefix[FWLOG_PREFIX_MAX_SIZE];
	bool pcap_flag;
} fwlog_info;

// Structure to hold file-related information
typedef struct {
	DIR* dir;              // Directory pointer
	char **files;          // Array of file paths
	int files_cnt;         // Number of files
} files_info;

static fwlog_info fwlog_bt ={
	.fsize = 100,
	.data_cnt = 0,
	.cur_data_cnt = 0,
	.files_max_cnt = 10,
	.cur_files_cnt = 1,
	.fdir = DEFAULT_LOG_DIR,
	.fpath = DEFAULT_FWLOG_PATH,
	.fname_prefix = DEFAULT_LOG_FILE "_",
	.pcap_flag = false,
};

static const int INVALID_FD = -1;
static int fwlog_fd = INVALID_FD;

static int32_t flag_gzip_start = 0;
// Add mutex definition
static pthread_mutex_t gzip_start_mutex = PTHREAD_MUTEX_INITIALIZER;
// Add Condition Variable Definition
static pthread_cond_t gzip_start_cond = PTHREAD_COND_INITIALIZER;

pthread_t gzip_thread;

static void get_time_stamp(char *buffer, size_t size)
{
	time_t rawTime;
	struct tm timeInfo;

	// Get the current time
	time(&rawTime);

	// Convert to local time in a thread-safe way
	if (localtime_r(&rawTime, &timeInfo) == NULL) {
		// Clear the buffer if conversion fails
		if (size > 0) {
			buffer[0] = '\0';
		}
		return;
	}

	// Format the time as "YYYYMMDDHHMMSS"
	strftime(buffer, size, "%Y%m%d%H%M%S", &timeInfo);
}

static int mkdir_p(const char *path)
{
	char tmp[256];
	char *p = NULL;
	size_t len;

	snprintf(tmp, sizeof(tmp), "%s", path);
	len = strlen(tmp);

	if (tmp[len - 1] == '/')
		tmp[len - 1] = 0;

	for (p = tmp + 1; *p; p++) {
		if (*p == '/') {
			*p = 0;
			if (mkdir(tmp, 0755) != 0) {
				if (errno != EEXIST) {
					ALOGE("mkdir:%s fail1 %s\n", tmp, strerror(errno));
					return -1;
				}
			}
			*p = '/';
		}
	}

	if (mkdir(tmp, 0755) != 0) {
		if (errno != EEXIST) {
			ALOGE("mkdir:%s fail2 %s\n", tmp, strerror(errno));
			return -1;
		}
	}

	return 0;
}

static int fwlog_get_file_path(const char *file_path, char *fdir, size_t fdir_len,
	char *fname, size_t fname_len)
{
	if (!file_path || (!*file_path)) {
		ALOGE("Invalid fwlog path");
		return -1;
	}

	int ret = snprintf(fdir, fdir_len, "%s", file_path);
	if (ret < 0 || (size_t)ret >= fdir_len) {
		ALOGE("Out buffer too small");
		return -1;
	}

	char *last_slash = strrchr(fdir, '/');
	if (!last_slash) {
		ALOGE("Invalid path, no slash");
		fdir[0] = '\0';
		return -1;
	}

	if (*(last_slash + 1) != '\0') {
		snprintf(fname, fname_len, "%s", last_slash + 1);
	} else {
		snprintf(fname, fname_len, "%s", DEFAULT_LOG_FILE);
	}

	*(last_slash + 1) = '\0';

	return 0;
}

int fwlog_set_path(const char *new_path)
{
	int ret;
	char tmp_dir[FWLOG_DIR_MAX_SIZE];
	char tmp_file[FWLOG_NAME_MAX_SIZE];

	if (!new_path) {
		ALOGE("Invalid parameter");
		return -1;
	}

	ret = fwlog_get_file_path(new_path, tmp_dir, sizeof(tmp_dir), tmp_file, sizeof(tmp_file));
	if (ret) {
		ALOGE("Invalid path");
		return -1;
	}

	strcpy(fwlog_bt.fdir,tmp_dir);

	ret = snprintf(fwlog_bt.fpath, sizeof(fwlog_bt.fpath), "%s%s", fwlog_bt.fdir, tmp_file);
	if (ret < 0 || (size_t)ret >= sizeof(fwlog_bt.fpath)) {
		ALOGE("fpath too long");
		return -1;
	}

	ret = snprintf(fwlog_bt.fname_prefix, sizeof(fwlog_bt.fname_prefix), "%s_", tmp_file);
	if (ret < 0 || (size_t)ret >= sizeof(fwlog_bt.fname_prefix)) {
		ALOGE("fname_prefix too long");
		return -1;
	}

	ALOGI("fdir:%s fpath:%s fname_prefix:%s",fwlog_bt.fdir, fwlog_bt.fpath, \
		fwlog_bt.fname_prefix);

	fwlog_pcap_flag_set(true);

	return 0;
}

static void fwlog_write_hex_data(int fd, const uint8_t *data,
	size_t data_len, size_t start_idx)
{
	if (fd < 0 || data == NULL || start_idx >= data_len)
		return;

	struct timeval tv;
	struct tm tm;
	char header[64];
	char line[512];
	size_t pos = 0;

	gettimeofday(&tv, NULL);
	localtime_r(&tv.tv_sec, &tm);

	strftime(header, sizeof(header), "%Y-%m-%d %H:%M:%S", &tm);

	pos += snprintf(line + pos, sizeof(line) - pos, "%s.%06ld ",
		header, (long)tv.tv_usec);

	for (size_t i = start_idx; i < data_len && pos + 3 < sizeof(line); i++)
		pos += snprintf(line + pos, sizeof(line) - pos, "%02x ", data[i]);

	dprintf(fd, "%s", line);
}

static int fwlog_compare_file_num(const char* file1, const char* file2)
{
	char number1[FWLOG_NAME_MAX_SIZE] = {0};
	char number2[FWLOG_NAME_MAX_SIZE] = {0};

	sscanf(file1 + strlen(fwlog_bt.fname_prefix), "%s", number1);
	sscanf(file2 + strlen(fwlog_bt.fname_prefix), "%s", number2);

	long long num1 = atoll(number1);
	long long num2 = atoll(number2);

	return (num1 < num2) ? -1 : (num1 > num2) ? 1 : 0;
}

static int fwlog_qsort_compare(const void *a, const void *b) {
	return fwlog_compare_file_num(*(const char **)a, *(const char **)b);
}

static void fwlog_relog_file(void)
{
	DIR* dir = NULL;
	struct dirent *entry;
	int maxNum = -1;
	char rename_fpath[FWLOG_PATH_MAX_SIZE];

	dir = opendir(fwlog_bt.fdir);
	if (!dir) {
		ALOGE("opendir:%s fail %s\n", fwlog_bt.fdir, strerror(errno));
		return;
	}

	while ((entry = readdir(dir)) != NULL) {
		const char *filename = entry->d_name;

		if (strncmp(filename, fwlog_bt.fname_prefix, strlen(fwlog_bt.fname_prefix)) != 0) {
			continue;
		}

		const char *numPart = filename + strlen(fwlog_bt.fname_prefix);
		size_t len = strlen(numPart);
		const size_t gz_len = strlen(".gz");

		if (len <= gz_len) {
			continue;
		}

		if (strcmp(numPart + len - gz_len, ".gz") != 0) {
			continue;
		}

		if (len - gz_len >= FWLOG_NAME_MAX_SIZE) {
			ALOGE("Filename too long: %s", filename);
			continue;
		}

		char numStr[FWLOG_NAME_MAX_SIZE];
		strncpy(numStr, numPart, len - gz_len);
		numStr[len - gz_len] = '\0';

		int num = 0;
		if (sscanf(numStr, "%d", &num) == 1) {
			if (num > maxNum) {
				ALOGD("maxNum: %d", maxNum);
				maxNum = num;
			}
		}
	}

	closedir(dir);

	if (maxNum > 0) {
		fwlog_bt.cur_files_cnt = maxNum + 1;
	} else {
		fwlog_bt.cur_files_cnt = 1;
	}

	if (fwlog_fd != INVALID_FD) {
		close(fwlog_fd);
		fwlog_fd = INVALID_FD;
	}

	snprintf(rename_fpath, sizeof(rename_fpath), "%s_%u", fwlog_bt.fpath, fwlog_bt.cur_files_cnt);
	ALOGI("cur_files_cnt:%u rename_fpath: %s", fwlog_bt.cur_files_cnt, rename_fpath);

	if (rename(fwlog_bt.fpath, rename_fpath) != 0) {
		if (errno != ENOENT) {
			ALOGE("rename to %s fail, errno: %s", rename_fpath, strerror(errno));
		}
	}

	mode_t prev_mask = umask(0);
	fwlog_fd = open(fwlog_bt.fpath, O_WRONLY | O_CREAT | O_TRUNC,
					S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH);
	umask(prev_mask);

	if (fwlog_fd == INVALID_FD) {
		ALOGE("open :%s fail", fwlog_bt.fpath);
	}
}

static void fwlog_update_file(void)
{
	files_info res = {NULL, NULL, 0};

	fwlog_relog_file();

	res.dir = opendir(fwlog_bt.fdir);
	if (!res.dir) {
		ALOGE("opendir:%s fail %s\n", fwlog_bt.fdir, strerror(errno));
		return;
	}

	struct dirent* entry;
	while ((entry = readdir(res.dir)) != NULL) {
		if (strncmp(entry->d_name, fwlog_bt.fname_prefix,
			strlen(fwlog_bt.fname_prefix)) == 0) {
			char **tmp = realloc(res.files, (res.files_cnt + 1) * sizeof(char *));
			if (!tmp) {
				ALOGE("realloc failed");
				// Free already allocated memory
				for (int i = 0; i < res.files_cnt; i++) {
					free(res.files[i]);
				}
				free(res.files);
				res.files = NULL;
				break;
			}
			res.files = tmp;

			res.files[res.files_cnt] = strdup(entry->d_name);
			if (!res.files[res.files_cnt]) {
				ALOGE("strdup failed");
				// Free already allocated memory
				for (int i = 0; i < res.files_cnt; i++) {
					free(res.files[i]);
				}
				free(res.files);
				res.files = NULL;
				res.files_cnt = 0;
				break;
			}
			res.files_cnt++;
		}
	}

	closedir(res.dir);
	res.dir = NULL;

	ALOGI("files_max_cnt:%u files_cnt:%d", fwlog_bt.files_max_cnt, res.files_cnt);

	if (res.files_cnt > fwlog_bt.files_max_cnt) {
		int deleteCnt = res.files_cnt - fwlog_bt.files_max_cnt;
		qsort(res.files, res.files_cnt, sizeof(char *), fwlog_qsort_compare);

		for (int i = 0; i < deleteCnt; i++) {
			char oldestFile[FWLOG_PATH_MAX_SIZE];
			snprintf(oldestFile, sizeof(oldestFile), "%s/%s", fwlog_bt.fdir, res.files[i]);
			remove(oldestFile);
			ALOGI("Removing %s", oldestFile);
			free(res.files[i]);    // Released
		}

		// Use memmove to move the back forward
		memmove(res.files, res.files + deleteCnt, (res.files_cnt - deleteCnt) * sizeof(char *));
		res.files_cnt -= deleteCnt;
	}

	for (int i = 0; i < res.files_cnt; i++) {
		free(res.files[i]);  // The remaining release
	}
	free(res.files);

	pthread_mutex_lock(&gzip_start_mutex);
	flag_gzip_start = 1;
	pthread_cond_signal(&gzip_start_cond);
	pthread_mutex_unlock(&gzip_start_mutex);
}

static int fwlog_gzip_rename(void)
{
	files_info res = {NULL, NULL, 0};
	int ret = -1;
	char tmp_path[FWLOG_PATH_MAX_SIZE];

	res.dir = opendir(fwlog_bt.fdir);
	if (!res.dir) {
		ALOGE("opendir:%s fail %s\n", fwlog_bt.fdir, strerror(errno));
		return ret;
	}

	struct dirent *entry;
	while ((entry = readdir(res.dir)) != NULL) {
		if (strncmp(entry->d_name, fwlog_bt.fname_prefix, strlen(fwlog_bt.fname_prefix)) == 0) {
			char **tmp = realloc(res.files, (res.files_cnt + 1) * sizeof(char *));
			if (!tmp) {
				ALOGE("realloc failed");
				goto cleanup;
			}
			res.files = tmp;

			res.files[res.files_cnt] = strdup(entry->d_name);
			if (!res.files[res.files_cnt]) {
				ALOGE("strdup failed");
				goto cleanup;
			}
			res.files_cnt++;
		}
	}

	closedir(res.dir);
	res.dir = NULL;

	ALOGI("files_cnt: %d", res.files_cnt);

	if (res.files_cnt == 0) {
		ret = 0;
		goto cleanup;
	}

	qsort(res.files, res.files_cnt, sizeof(char *), fwlog_qsort_compare);

	// Step 1: rename old files to tmp
	for (int i = 0; i < res.files_cnt; i++) {
		char old_path[FWLOG_PATH_MAX_SIZE];
		snprintf(old_path, sizeof(old_path), "%s%s", fwlog_bt.fdir, res.files[i]);
		snprintf(tmp_path, sizeof(tmp_path), "%s%s.tmp", fwlog_bt.fdir, res.files[i]);

		if (rename(old_path, tmp_path) != 0) {
			ALOGE("Rename %s to %s fail, errno: %s", old_path, tmp_path, strerror(errno));
			goto cleanup;
		}

		char *new_name = strdup(tmp_path);
		if (!new_name) {
			ALOGE("strdup failed for tmp_path");
			goto cleanup;
		}

		free(res.files[i]);
		res.files[i] = new_name;
	}

	// Step 2: rename tmp to new name with index
	for (int i = 0; i < res.files_cnt; i++) {
		snprintf(tmp_path, sizeof(tmp_path), "%s%s%d.gz",
			fwlog_bt.fdir, fwlog_bt.fname_prefix, i + 1);

		if (rename(res.files[i], tmp_path) != 0) {
			ALOGE("Rename %s to %s fail, errno: %s", res.files[i], tmp_path, strerror(errno));
			goto cleanup;
		}
		ALOGI("Renamed to %s", tmp_path);
	}

	ret = 0;

cleanup:
	if (res.dir)
		closedir(res.dir);

	if (res.files) {
		for (int i = 0; i < res.files_cnt; i++) {
			free(res.files[i]);
		}
		free(res.files);
	}

	return ret;
}

static int fwlog_gzip_compress(const char* input_path, const char* output_path)
{
	FILE* source = NULL;
	gzFile dest = NULL;
	unsigned char buffer[4096] = {0};
	int num_read = 0, num_write = 0;
	mode_t prev_mask;
	int ret = 0;

	prev_mask = umask(002);
	ALOGI("start compress: %s -> %s", input_path, output_path);

	source = fopen(input_path, "rb");
	if (!source) {
		ALOGE("fopen: %s fail: %s", input_path, strerror(errno));
		umask(prev_mask);
		return -1;
	}

	dest = gzopen(output_path, "wb");
	if (!dest) {
		ALOGE("gzopen: %s fail: %s", output_path, strerror(errno));
		fclose(source);
		umask(prev_mask);
		return -1;
	}

	umask(prev_mask);

	while ((num_read = fread(buffer, 1, sizeof(buffer), source)) > 0) {
		num_write = gzwrite(dest, buffer, num_read);
		if (num_write == 0) {
			int errnum = 0;
			const char* msg = gzerror(dest, &errnum);
			ALOGE("gzwrite failed: %s", msg);
			ret = -1;
			break;
		}
	}

	if (ferror(source)) {
		ALOGE("fread error: %s", strerror(errno));
		ret = -1;
	}

	fclose(source);
	gzclose(dest);

	ALOGI("finish compress: %s", ret == 0 ? "OK" : "FAIL");
	return ret;
}

// Thread cleanup function, used to release resources when the thread is canceled
static void fwlog_thread_cleanup(void *arg)
{
	files_info *res = (files_info *)arg;

	// Close directory
	if (res->dir) {
		closedir(res->dir);
		res->dir = NULL;
	}

	// Free log files
	if (res->files) {
		for (int i = 0; i < res->files_cnt; i++) {
			free(res->files[i]);
		}
		free(res->files);
		res->files = NULL;
		res->files_cnt = 0;
	}

	// Release mutex to prevent deadlock
	if (pthread_mutex_trylock(&gzip_start_mutex) == 0) {
		pthread_mutex_unlock(&gzip_start_mutex);
	}

	ALOGI("thread cleanup done");
}


static void *fwlog_gzip_compress_thread(void *arg)
{
	(void)arg;

	struct dirent *entry;
	files_info res = {NULL, NULL, 0};

	// Set thread cleanup function
	pthread_cleanup_push(fwlog_thread_cleanup, (void*)&res);

	ALOGI("start");

	while (1) {
		pthread_mutex_lock(&gzip_start_mutex);
		while (!flag_gzip_start) {
			pthread_cond_wait(&gzip_start_cond, &gzip_start_mutex);
		}
		pthread_mutex_unlock(&gzip_start_mutex);

		ALOGI("gzip compress files start");

		// Free previous log files
		if (res.files) {
			for (int i = 0; i < res.files_cnt; i++) {
				free(res.files[i]);
			}
			free(res.files);
			res.files = NULL;
			res.files_cnt = 0;
		}

		res.dir = opendir(fwlog_bt.fdir);
		if (!res.dir) {
			ALOGE("opendir failed");
			goto compress_exit;
		}

		while ((entry = readdir(res.dir)) != NULL) {
			size_t len = strlen(entry->d_name);
			if (strncmp(entry->d_name, fwlog_bt.fname_prefix,
				strlen(fwlog_bt.fname_prefix)) == 0 &&
				!(len >= 3 && strcmp(entry->d_name + len - 3, ".gz") == 0)) {

				char **tmp = realloc(res.files, (res.files_cnt + 1) * sizeof(char *));
				if (!tmp) {
					ALOGE("realloc failed");
					goto compress_exit;
				}
				res.files = tmp;

				res.files[res.files_cnt] = strdup(entry->d_name);
				if (!res.files[res.files_cnt]) {
					ALOGE("strdup failed");
					goto compress_exit;
				}
				res.files_cnt++;
			}
		}
		closedir(res.dir);
		res.dir = NULL;

		for (int i = 0; i < res.files_cnt; ) {
			char Filename[FWLOG_PATH_MAX_SIZE];
			char gFilename[FWLOG_PATH_MAX_SIZE];

			snprintf(Filename, sizeof(Filename), "%s%s%s", fwlog_bt.fdir,
				(fwlog_bt.fdir[strlen(fwlog_bt.fdir) - 1] == '/') ? "" : "/", res.files[i]);

			snprintf(gFilename, sizeof(gFilename), "%s.gz", Filename);

			ALOGI("Compress in: %s, out: %s", Filename, gFilename);

			if (!fwlog_gzip_compress(Filename, gFilename)) {
				if (remove(Filename) == 0) {
					free(res.files[i]);
					memmove(res.files + i, res.files + i + 1, (res.files_cnt - i - 1) * sizeof(char *));
					res.files_cnt--;
				} else {
					ALOGE("Remove fail: %s", Filename);
					i++;
				}
			} else {
				ALOGE("Compress fail: %s", Filename);
				remove(gFilename);
				i++;
			}
		}

		fwlog_gzip_rename();

compress_exit:
		if (res.dir) {
			closedir(res.dir);
			res.dir = NULL;
		}

		if (res.files) {
			for (int i = 0; i < res.files_cnt; i++) {
				free(res.files[i]);
			}
			free(res.files);
			res.files = NULL;
			res.files_cnt = 0;
		}

		pthread_mutex_lock(&gzip_start_mutex);
		flag_gzip_start = 0;
		pthread_mutex_unlock(&gzip_start_mutex);

		sleep(1);
	}

	ALOGI("finish");

	// Pop-up cleanup function
	pthread_cleanup_pop(1);

	return NULL;
}

void fwlog_set_size(uint16_t val)
{
	fwlog_bt.fsize = val;
}

void fwlog_set_cnt(uint16_t val)
{
	fwlog_bt.files_max_cnt = val;
}

void fwlog_pcap_flag_set(bool val)
{
	fwlog_bt.pcap_flag = val;
}

bool fwlog_pcap_flag_get(void)
{
	return fwlog_bt.pcap_flag;
}

void fwlog_init(void)
{
	bool pcap_flag = fwlog_pcap_flag_get();
	if (!pcap_flag) {
		ALOGI("flag=%d, exit", pcap_flag);
		return;
	}

	if (mkdir_p(fwlog_bt.fdir)) {
		ALOGE("mkdir_p fail");
		return;
	}

	ALOGI("fsize:%u data_cnt:%u files_max_cnt:%u cur_data_cnt:%u", fwlog_bt.fsize, \
		fwlog_bt.data_cnt, fwlog_bt.files_max_cnt, fwlog_bt.cur_data_cnt);

	if (pthread_create(&gzip_thread, NULL, fwlog_gzip_compress_thread, NULL) != 0) {
		ALOGE("gzip_thread pthread_create fail");
	} else {
		//pthread_setname_np(gzip_thread, "bt_fwlog_gzip");
		prctl(PR_SET_NAME, "bt_fwlog_gzip", 0,0,0);
	}

	fwlog_update_file();
}

void fwlog_close (void)
{
	bool pcap_flag = fwlog_pcap_flag_get();
	if (!pcap_flag) {
		ALOGI("flag=%d, exit", pcap_flag);
		return;
	} else {
		ALOGI();
	}

	if (fwlog_fd != INVALID_FD) {
		close(fwlog_fd);
		fwlog_fd = INVALID_FD;
	}

	// Cancel gzip thread
	if (pthread_cancel(gzip_thread) != 0) {
		ALOGE("pthread_cancel failed");
	} else {
		// Wait for thread to finish
		if (pthread_join(gzip_thread, NULL) != 0) {
			ALOGE("pthread_join failed");
		} else {
			ALOGI("gzip_thread exit successful");
		}
	}

	// Destroy mutex and condition variable
	pthread_mutex_destroy(&gzip_start_mutex);
	pthread_cond_destroy(&gzip_start_cond);
}

void fwlog_handle_signal(int sig)
{
	ALOGD();
	fwlog_close();

	exit(0);
}

void fwlog_record(const uint8_t* data, uint32_t data_len)
{
	if (!fwlog_pcap_flag_get()) {
		return;
	}

	if (fwlog_fd == INVALID_FD) {
		ALOGE("invalid fwlog_fd");
		return;
	}

	uint32_t one_pkg_size = 0;

	// Need to remove three bytes, event code + command code + data len
	fwlog_write_hex_data(fwlog_fd, data, (data_len - 2), 2);
	fwlog_bt.cur_data_cnt++;

	ALOGD("fsize:%u", fwlog_bt.fsize);

	one_pkg_size = (data_len - 2) * 3 + 27;   // 27:time tag len
	fwlog_bt.data_cnt = (fwlog_bt.fsize * 1024 * 1024) / one_pkg_size;

	ALOGD("one_pkg_size:%u data_cnt:%u cur_data_cnt:%u", one_pkg_size, \
		fwlog_bt.data_cnt, fwlog_bt.cur_data_cnt);

	if (fwlog_bt.cur_data_cnt >= fwlog_bt.data_cnt) {
		fwlog_update_file();
		fwlog_bt.cur_data_cnt = 0;
	}
}