1 files changed, 14 insertions, 0 deletions
diff --git a/src/tty.sh b/src/tty.sh
index 0b5524e..3374753 100644
--- a/src/tty.sh
+++ b/src/tty.sh
@@ -60,6 +60,7 @@ exit 0
 #include <sys/types.h>
 #include <signal.h>
 #include <fcntl.h>
+#include <sys/stat.h>
 #ifndef sgi
 # include <sys/file.h>
 #endif
@@ -1499,6 +1500,19 @@ int ibaud, obaud;
   return 0;
 }
 
+
+int
+CheckTtyname (tty)
+char *tty;
+{
+  struct stat st;
+
+  if (lstat(tty, &st) || !S_ISCHR(st.st_mode) ||
+     (st.st_nlink > 1 && strncmp(tty, "/dev/", 5)))
+    return -1;
+  return 0;
+}
+
 /*
  *  Write out the mode struct in a readable form
  */