--- lbbs/src/common.c	2025/05/06 13:28:38	1.16
+++ lbbs/src/common.c	2025/05/17 11:30:09	1.22
@@ -20,11 +20,27 @@
 #include <string.h>
 #include <time.h>
 #include <sys/types.h>
-#include <sys/wait.h>
 
 // Version information
 char app_version[256] = "LBBS-devel version 1.0";
 
+// File loader
+const char *data_files_load_startup[] = {
+	DATA_WELCOME,
+	DATA_REGISTER,
+	DATA_GOODBYE,
+	DATA_LICENSE,
+	DATA_COPYRIGHT,
+	DATA_LOGIN_ERROR,
+	DATA_ACTIVE_BOARD,
+	DATA_READ_HELP,
+	VAR_BBS_TOP};
+int data_files_load_startup_count = 9; // Count of data_files_load_startup[]
+
+const char *data_files_load_timeval[] = {
+	VAR_BBS_TOP};
+int data_files_load_timeval_count = 1; // Count of data_files_load_timeval[]
+
 // Global declaration for sockets
 int socket_server;
 int socket_client;
@@ -34,95 +50,53 @@ int port_server;
 int port_client;
 
 // Global declaration for system
-int SYS_exit;
-int SYS_child_process_count;
+volatile int SYS_server_exit = 0;
+volatile int SYS_child_process_count = 0;
+volatile int SYS_child_exit = 0;
+volatile int SYS_menu_reload = 0;
+volatile int SYS_data_file_reload = 0;
 
-// Common function
-const char *str_space(char *string, int length)
-{
-	int i;
-	for (i = 0; i < length; i++)
-	{
-		string[i] = ' ';
-	}
-	string[length] = '\0';
-	return string;
-}
+static const char *weekday[] = {
+	"天", "一", "二", "三", "四", "五", "六"};
 
+// Common function
 const char *get_time_str(char *s, size_t len)
 {
 	time_t curtime = time(NULL);
 	struct tm *loctime;
 	loctime = localtime(&curtime);
 
-	size_t j = strftime(s, len, "%Y年%m月%d日%H:%M:%S ", loctime);
+	size_t j = strftime(s, len, "%Y年%m月%d日%H:%M:%S 星期", loctime);
 
-	if (j == 0)
+	if (j == 0 || j + strlen(weekday[loctime->tm_wday]) + 1 > len)
 	{
 		return NULL;
 	}
 
-	switch (loctime->tm_wday)
-	{
-	case 0:
-		strncat(s, "星期天", len - j);
-		break;
-	case 1:
-		strncat(s, "星期一", len - j);
-		break;
-	case 2:
-		strncat(s, "星期二", len - j);
-		break;
-	case 3:
-		strncat(s, "星期三", len - j);
-		break;
-	case 4:
-		strncat(s, "星期四", len - j);
-		break;
-	case 5:
-		strncat(s, "星期五", len - j);
-		break;
-	case 6:
-		strncat(s, "星期六", len - j);
-		break;
-	}
+	strncat(s, weekday[loctime->tm_wday], len - 1 - j);
 
 	return s;
 }
 
-void reload_bbs_menu(int i)
+void sig_hup_handler(int i)
 {
-	if (reload_menu(&bbs_menu) < 0)
-	{
-		log_error("Reload menu failed\n");
-	}
-	else
-	{
-		log_std("Reload menu successfully\n");
-	}
+	SYS_menu_reload = 1;
+	SYS_data_file_reload = 1;
 }
 
-void system_exit(int i)
+void sig_term_handler(int i)
 {
-	SYS_exit = 1;
+	SYS_server_exit = 1;
 }
 
-void child_exit(int i)
+void sig_chld_handler(int i)
 {
-	int pid;
-
-	pid = wait(0);
-
-	if (pid > 0)
-	{
-		SYS_child_process_count--;
-		log_std("Child process (%d) exited\n", pid);
-	}
+	SYS_child_exit = 1;
 }
 
-const char * ip_mask(char * s, int level, char mask)
+const char *ip_mask(char *s, int level, char mask)
 {
-	char * p = s;
+	char *p = s;
 
 	if (level <= 0)
 	{