add vtreset

1 files changed, 36 insertions, 0 deletions

diff --git a/vt_reset.c b/vt_reset.c
new file mode 100644
index 0000000..139ab0b
--- /dev/null
+++ b/vt_reset.c
@@ -0,0 +1,36 @@
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include <linux/vt.h>
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+
+main (int argc, char *argv[])
+{
+  int fd;
+  int i;
+  char buf[128];
+  struct vt_mode vm;
+
+  for (i = 1; i < 31; ++i) {
+      sprintf (buf, "/dev/tty%d", i);
+      fd = open (buf, O_RDWR | O_NOCTTY);
+
+      memset (&vm, 0, sizeof (vm));
+      vm.mode = VT_PROCESS;
+      ioctl (fd, VT_SETMODE, &vm);
+      ioctl (fd, VT_RELDISP, 0);
+      ioctl (fd, VT_RELDISP, 1);
+      ioctl (fd, VT_RELDISP, VT_ACKACQ);
+
+      memset (&vm, 0, sizeof (vm));
+      vm.mode = VT_AUTO;
+      ioctl (fd, VT_SETMODE, &vm);
+
+      ioctl (fd, VT_UNLOCKSWITCH, 0);
+
+      close (fd);
+  }
+  exit (0);
+}