patches/glibc/2_9/120-_nss_dns_gethostbyaddr2_r-check-and-adjust-the-buffer-alignment.patch
1.1 --- a/patches/glibc/2_9/120-_nss_dns_gethostbyaddr2_r-check-and-adjust-the-buffer-alignment.patch Sat Apr 11 19:03:02 2009 +0000
1.2 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000
1.3 @@ -1,35 +0,0 @@
1.4 -Original patch from: gentoo/src/patchsets/glibc/2.9/0050_all_glibc-_nss_dns_gethostbyaddr2_r-check-and-adjust-the-buffer-alignment.patch
1.5 -
1.6 --= BEGIN original header =-
1.7 -http://sourceware.org/ml/libc-alpha/2009-01/msg00000.html
1.8 -
1.9 -From 8ad7030880eaa18dcabf8e284e79026301fd3fa4 Mon Sep 17 00:00:00 2001
1.10 -From: Ulrich Drepper <drepper@redhat.com>
1.11 -Date: Thu, 8 Jan 2009 00:02:38 +0000
1.12 -Subject: [PATCH] (_nss_dns_gethostbyaddr2_r): Check and adjust the buffer alignment.
1.13 -
1.14 --= END original header =-
1.15 -
1.16 -diff -durN glibc-2_9.orig/resolv/nss_dns/dns-host.c glibc-2_9/resolv/nss_dns/dns-host.c
1.17 ---- glibc-2_9.orig/resolv/nss_dns/dns-host.c 2008-11-12 08:52:20.000000000 +0100
1.18 -+++ glibc-2_9/resolv/nss_dns/dns-host.c 2009-02-02 22:00:36.000000000 +0100
1.19 -@@ -364,6 +364,19 @@
1.20 - int n, status;
1.21 - int olderr = errno;
1.22 -
1.23 -+ uintptr_t pad = -(uintptr_t) buffer % __alignof__ (struct host_data);
1.24 -+ buffer += pad;
1.25 -+ buflen = buflen > pad ? buflen - pad : 0;
1.26 -+
1.27 -+ if (__builtin_expect (buflen < sizeof (struct host_data), 0))
1.28 -+ {
1.29 -+ *errnop = ERANGE;
1.30 -+ *h_errnop = NETDB_INTERNAL;
1.31 -+ return NSS_STATUS_TRYAGAIN;
1.32 -+ }
1.33 -+
1.34 -+ host_data = (struct host_data *) buffer;
1.35 -+
1.36 - if (__res_maybe_init (&_res, 0) == -1)
1.37 - return NSS_STATUS_UNAVAIL;
1.38 -