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authorUlrich Drepper <drepper@redhat.com>2007-04-23 15:15:53 +0000
committerUlrich Drepper <drepper@redhat.com>2007-04-23 15:15:53 +0000
commita15ccd8f07d7afbbd7635f350e318ede84709ac6 (patch)
tree177281f275d54ff4e75078597a5eaee7d0ef9cb3 /nss
parentb64a9db89be6be873d8e096e7f83833cc3925177 (diff)
downloadglibc-a15ccd8f07d7afbbd7635f350e318ede84709ac6.tar.gz
(HOST_DB_LOOKUP): Ensure sufficient alignment of buffer and tmp_buffer.
Diffstat (limited to 'nss')
-rw-r--r--nss/nss_files/files-hosts.c10
1 files changed, 8 insertions, 2 deletions
diff --git a/nss/nss_files/files-hosts.c b/nss/nss_files/files-hosts.c
index 6daafdeeed..7b7aadeaab 100644
--- a/nss/nss_files/files-hosts.c
+++ b/nss/nss_files/files-hosts.c
@@ -1,5 +1,6 @@
/* Hosts file parser in nss_files module.
- Copyright (C) 1996-2001, 2003, 2004, 2006 Free Software Foundation, Inc.
+ Copyright (C) 1996-2001, 2003, 2004, 2006, 2007
+ Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -102,6 +103,10 @@ _nss_files_get##name##_r (proto, \
{ \
enum nss_status status; \
\
+ uintptr_t pad = -(uintptr_t) buffer % __alignof__ (struct hostent_data); \
+ buffer += pad; \
+ buflen = buflen > pad ? buflen - pad : 0; \
+ \
__libc_lock_lock (lock); \
\
/* Reset file pointer to beginning or open file. */ \
@@ -122,7 +127,8 @@ _nss_files_get##name##_r (proto, \
{ \
/* We have to get all host entries from the file. */ \
const size_t tmp_buflen = MIN (buflen, 4096); \
- char tmp_buffer[tmp_buflen]; \
+ char tmp_buffer[tmp_buflen] \
+ __attribute__ ((__aligned__ (__alignof__ (struct hostent_data))));\
struct hostent tmp_result_buf; \
int naddrs = 1; \
int naliases = 0; \