--- lbbs/src/bbs_main.c	2025/06/21 02:15:18	1.73
+++ lbbs/src/bbs_main.c	2025/06/25 01:50:14	1.75
@@ -29,6 +29,8 @@
 #include "section_list.h"
 #include "trie_dict.h"
 #include "user_priv.h"
+#include <errno.h>
+#include <signal.h>
 #include <stdlib.h>
 #include <string.h>
 #include <time.h>
@@ -204,20 +206,20 @@ int bbs_center()
 	show_top("", BBS_name, "");
 	show_active_board();
 	show_bottom("");
-	display_menu(p_bbs_menu);
+	display_menu(&bbs_menu);
 	iflush();
 
 	while (!SYS_server_exit)
 	{
 		ch = igetch(100);
 
-		if (p_bbs_menu->choose_step == 0 && time(NULL) - t_last_action >= 10)
+		if (bbs_menu.choose_step == 0 && time(NULL) - t_last_action >= 10)
 		{
 			t_last_action = time(NULL);
 
 			show_active_board();
 			show_bottom("");
-			display_menu_cursor(p_bbs_menu, 1);
+			display_menu_cursor(&bbs_menu, 1);
 			iflush();
 		}
 
@@ -239,9 +241,10 @@ int bbs_center()
 		case CR:
 			igetch_reset();
 		default:
-			switch (menu_control(p_bbs_menu, ch))
+			switch (menu_control(&bbs_menu, ch))
 			{
 			case EXITBBS:
+			case EXITMENU:
 				return 0;
 			case REDRAW:
 				t_last_action = time(NULL);
@@ -249,7 +252,7 @@ int bbs_center()
 				show_top("", BBS_name, "");
 				show_active_board();
 				show_bottom("");
-				display_menu(p_bbs_menu);
+				display_menu(&bbs_menu);
 				break;
 			case NOREDRAW:
 			case UNKNOWN_CMD:
@@ -267,6 +270,22 @@ int bbs_center()
 
 int bbs_main()
 {
+	struct sigaction act = {0};
+
+	// Set signal handler
+	act.sa_handler = SIG_IGN;
+	if (sigaction(SIGHUP, &act, NULL) == -1)
+	{
+		log_error("set signal action of SIGHUP error: %d\n", errno);
+		goto cleanup;
+	}
+	act.sa_handler = SIG_DFL;
+	if (sigaction(SIGCHLD, &act, NULL) == -1)
+	{
+		log_error("set signal action of SIGCHLD error: %d\n", errno);
+		goto cleanup;
+	}
+
 	// Set data pools in shared memory readonly
 	if (set_trie_dict_shm_readonly() < 0)
 	{
@@ -282,7 +301,7 @@ int bbs_main()
 	}
 
 	// Load menu in shared memory
-	if (set_menu_shm_readonly(p_bbs_menu) < 0)
+	if (set_menu_shm_readonly(&bbs_menu) < 0)
 	{
 		goto cleanup;
 	}
@@ -352,9 +371,7 @@ cleanup:
 	article_view_log_unload(&BBS_article_view_log);
 
 	// Detach menu in shared memory
-	detach_menu_shm(p_bbs_menu);
-	free(p_bbs_menu);
-	p_bbs_menu = NULL;
+	detach_menu_shm(&bbs_menu);
 
 	// Detach data pools shm
 	detach_section_list_shm();