[src/trunk]: src/usr.sbin/lpr/lpd die if fd_set overruns

[itojun <itojun%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/756b24f5edee
branches:  trunk
changeset: 535045:756b24f5edee
user:      itojun <itojun%NetBSD.org@localhost>
date:      Fri Aug 09 02:40:57 2002 +0000

description:
die if fd_set overruns

diffstat:

 usr.sbin/lpr/lpd/lpd.c |  12 ++++++++++--
 1 files changed, 10 insertions(+), 2 deletions(-)

diffs (40 lines):

diff -r 1e104d640a74 -r 756b24f5edee usr.sbin/lpr/lpd/lpd.c
--- a/usr.sbin/lpr/lpd/lpd.c    Fri Aug 09 02:39:15 2002 +0000
+++ b/usr.sbin/lpr/lpd/lpd.c    Fri Aug 09 02:40:57 2002 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: lpd.c,v 1.35 2002/07/14 15:28:00 wiz Exp $     */
+/*     $NetBSD: lpd.c,v 1.36 2002/08/09 02:40:57 itojun Exp $  */
 
 /*
  * Copyright (c) 1983, 1993, 1994
@@ -45,7 +45,7 @@
 #if 0
 static char sccsid[] = "@(#)lpd.c      8.7 (Berkeley) 5/10/95";
 #else
-__RCSID("$NetBSD: lpd.c,v 1.35 2002/07/14 15:28:00 wiz Exp $");
+__RCSID("$NetBSD: lpd.c,v 1.36 2002/08/09 02:40:57 itojun Exp $");
 #endif
 #endif /* not lint */
 
@@ -292,6 +292,10 @@
        (void) umask(0);
        sigprocmask(SIG_SETMASK, &omask, (sigset_t *)0);
        FD_ZERO(&defreadfds);
+       if (funix >= FD_SETSIZE) {
+               syslog(LOG_ERR, "descriptor too big");
+               exit(1);
+       }
        FD_SET(funix, &defreadfds);
        listen(funix, 5);
        if (!sflag || blist_addrs)
@@ -307,6 +311,10 @@
 
        if (finet) {
                for (i = 1; i <= *finet; i++) {
+                       if (finet[i] >= FD_SETSIZE) {
+                               syslog(LOG_ERR, "descriptor too big");
+                               exit(1);
+                       }
                        FD_SET(finet[i], &defreadfds);
                        listen(finet[i], 5);
                }