X-Git-Url: http://git.ozlabs.org/?a=blobdiff_plain;f=pppd%2Ftty.c;h=efc92ec0fd34cbf8da3304c02db6ae70f8aa20e1;hb=5116fdc189652e3c39e2581a01b7ff5b4cefd514;hp=803d8ba02edecad13d30d4cc38517d7731b4f56a;hpb=f53a48eb9d74db3c71938e114b7f489c339bc003;p=ppp.git

diff --git a/pppd/tty.c b/pppd/tty.c
index 803d8ba..efc92ec 100644
--- a/pppd/tty.c
+++ b/pppd/tty.c
@@ -73,7 +73,7 @@
  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
-#define RCSID	"$Id: tty.c,v 1.8 2002/12/04 23:03:33 paulus Exp $"
+#define RCSID	"$Id: tty.c,v 1.9 2002/12/06 12:06:45 paulus Exp $"
 
 #include <stdio.h>
 #include <ctype.h>
@@ -992,6 +992,13 @@ charshunt(ifd, ofd, record_file)
     signal(SIGXFSZ, SIG_DFL);
 #endif
 
+    /*
+     * Check that the fds won't overrun the fd_sets
+     */
+    if (ifd >= FD_SETSIZE || ofd >= FD_SETSIZE || pty_master >= FD_SETSIZE)
+	fatal("internal error: file descriptor too large (%d, %d, %d)",
+	      ifd, ofd, pty_master);
+
     /*
      * Open the record file if required.
      */