1 files changed, 46 insertions, 0 deletions
diff --git a/release/src/router/busybox/console-tools/deallocvt.c b/release/src/router/busybox/console-tools/deallocvt.c
new file mode 100644
index 00000000..f641be8d
--- /dev/null
+++ b/release/src/router/busybox/console-tools/deallocvt.c
@@ -0,0 +1,46 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * disalloc.c - aeb - 940501 - Disallocate virtual terminal(s)
+ * Renamed deallocvt.
+ */
+#include <stdlib.h>
+#include <stdio.h>
+#include <fcntl.h>
+#include <sys/types.h>
+#include <sys/ioctl.h>
+#include "busybox.h"
+
+/* From <linux/vt.h> */
+static const int VT_DISALLOCATE = 0x5608;  /* free memory associated to vt */
+
+int deallocvt_main(int argc, char *argv[])
+{
+	int fd, num=0;
+
+	if (argc > 2)
+		bb_show_usage();
+
+	fd = get_console_fd();
+	
+	/*  num=0  deallocate all unused consoles */
+	if (argc == 1)
+		goto disallocate_all;
+
+	num=bb_xgetlarg(argv[1], 10, 0, INT_MAX);
+
+	switch(num)
+	{
+		case 0:
+			bb_error_msg("0: illegal VT number");
+			break;
+		case 1:
+			bb_error_msg("VT 1 cannot be deallocated");
+			break;
+		default:
+disallocate_all:
+			if (ioctl(fd, VT_DISALLOCATE, num))
+				bb_perror_msg_and_die("VT_DISALLOCATE");
+			return EXIT_SUCCESS;
+	}
+	return EXIT_FAILURE;
+}