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(HOST_DB_LOOKUP): Ensure sufficient alignment of buffer and tmp_buffer.

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This commit is contained in:
Ulrich Drepper
2007-04-23 15:15:53 +00:00
parent b64a9db89b
commit a15ccd8f07
1 changed files with 8 additions and 2 deletions
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10
nss/nss_files/files-hosts.c
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@@ -1,5 +1,6 @@
/* Hosts file parser in nss_files module. /* 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. This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or 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; \ 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); \ __libc_lock_lock (lock); \
\ \
/* Reset file pointer to beginning or open file. */ \ /* 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. */ \ /* We have to get all host entries from the file. */ \
const size_t tmp_buflen = MIN (buflen, 4096); \ 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; \ struct hostent tmp_result_buf; \
int naddrs = 1; \ int naddrs = 1; \
int naliases = 0; \ int naliases = 0; \