luckfox-pico/sysdrv/tools/board/buildroot/busybox_patch/0010-halt-Support-rebooting-with-arg.patch

--- a/init/halt.c
+++ b/init/halt.c
@@ -93,6 +93,8 @@
 
 #include "libbb.h"
 #include "reboot.h"
+#include <linux/reboot.h>
+#include <sys/syscall.h>
 
 #if ENABLE_FEATURE_WTMP
 #include <sys/utsname.h>
@@ -119,6 +121,49 @@
 #define write_wtmp() ((void)0)
 #endif
 
+
+static volatile int caught_sigterm = FALSE;
+static void signal_handler(int sig)
+{
+	bb_error_msg("Caught signal %d", sig);
+
+	if (sig == SIGTERM)
+		caught_sigterm = TRUE;
+}
+
+static int reboot_with_arg(const char *arg)
+{
+	struct sigaction sa;
+	int pid;
+
+	/* Fork new thread to handle reboot */
+	if ((pid = fork()))
+		return pid < 0 ? pid : 0;
+
+	/* Handle signal and reboot in child thread */
+	sigemptyset(&sa.sa_mask);
+	sa.sa_flags = 0;
+	sa.sa_handler = signal_handler;
+	sigaction_set(SIGTERM, &sa);
+
+	bb_error_msg("Waiting for SIGTERM");
+
+	/* The init will send SIGTERM to us after SHUTDOWN actions */
+	while (!caught_sigterm)
+		usleep(50000);
+
+	bb_error_msg("Ready to reboot");
+
+	/* Wait 200ms for other processes to exit */
+	usleep(200000);
+	sync();
+
+	bb_error_msg("Rebooting with arg(%s)", arg);
+	return syscall(__NR_reboot, LINUX_REBOOT_MAGIC1,
+			LINUX_REBOOT_MAGIC2,
+			LINUX_REBOOT_CMD_RESTART2, arg);
+}
+
 #if ENABLE_FEATURE_WAIT_FOR_INIT
 /* In Linux, "poweroff" may be spawned even before init.
  * For example, with ACPI:
@@ -239,6 +284,11 @@
 						CONFIG_TELINIT_PATH);
 			}
 		}
+
+		/* Handle rebooting with arg */
+		if (signals[which] == SIGTERM && argc > 1 && argv[1][0] != '-')
+			rc = reboot_with_arg(argv[1]);
+
 	} else {
 		rc = reboot(magic[which]);
 	}