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authorUlrich Drepper <drepper@redhat.com>2008-03-08 19:17:22 +0000
committerUlrich Drepper <drepper@redhat.com>2008-03-08 19:17:22 +0000
commit725c0c87926abdc5f7b2fee52132d9ec82d64ac3 (patch)
tree8f21c7cb795ac60ebbad25a4d783c3f72a401994 /inet
parent368a8dec0ae2209be167daea8034646abcba220d (diff)
downloadglibc-725c0c87926abdc5f7b2fee52132d9ec82d64ac3.tar.gz
[BZ #5760]
* inet/inet6_opt.c (inet6_opt_init): Fix ip6h_len computation. Patch by Roland Bless <roland@bless.de>.
Diffstat (limited to 'inet')
-rw-r--r--inet/inet6_opt.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/inet/inet6_opt.c b/inet/inet6_opt.c
index 17d3fee213..83063d2259 100644
--- a/inet/inet6_opt.c
+++ b/inet/inet6_opt.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2006, 2007 Free Software Foundation, Inc.
+/* Copyright (C) 2006, 2007, 2008 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2006.
@@ -39,7 +39,11 @@ inet6_opt_init (void *extbuf, socklen_t extlen)
/* Fill in the length in units of 8 octets. */
struct ip6_hbh *extp = (struct ip6_hbh *) extbuf;
- extp->ip6h_len = extlen / 8;
+
+ /* RFC 2460 requires that the header extension length is the
+ length of the option header in 8-byte units, not including
+ the first 8 bytes. Hence we have to subtract one. */
+ extp->ip6h_len = extlen / 8 - 1;
}
return sizeof (struct ip6_hbh);