diff options
Diffstat (limited to 'nss/nss_files/files-hosts.c')
| -rw-r--r-- | nss/nss_files/files-hosts.c | 42 |
1 files changed, 16 insertions, 26 deletions
diff --git a/nss/nss_files/files-hosts.c b/nss/nss_files/files-hosts.c index 6daafdeeed..b1ba3aa76d 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, 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 @@ -55,30 +56,14 @@ LINE_PARSER STRING_FIELD (addr, isspace, 1); /* Parse address. */ - if (inet_pton (af, addr, entdata->host_addr) <= 0) - { - if (af == AF_INET6 && (flags & AI_V4MAPPED) != 0 - && inet_pton (AF_INET, addr, entdata->host_addr) > 0) - map_v4v6_address ((char *) entdata->host_addr, - (char *) entdata->host_addr); - else if (af == AF_INET - && inet_pton (AF_INET6, addr, entdata->host_addr) > 0) - { - if (IN6_IS_ADDR_V4MAPPED (entdata->host_addr)) - memcpy (entdata->host_addr, entdata->host_addr + 12, INADDRSZ); - else if (IN6_IS_ADDR_LOOPBACK (entdata->host_addr)) - { - in_addr_t localhost = htonl (INADDR_LOOPBACK); - memcpy (entdata->host_addr, &localhost, sizeof (localhost)); - } - else - /* Illegal address: ignore line. */ - return 0; - } - else - /* Illegal address: ignore line. */ - return 0; - } + if (inet_pton (af, addr, entdata->host_addr) <= 0 + && (af != AF_INET6 || (flags & AI_V4MAPPED) == 0 + || inet_pton (AF_INET, addr, entdata->host_addr) <= 0 + || (map_v4v6_address ((char *) entdata->host_addr, + (char *) entdata->host_addr), + 0))) + /* Illegal address: ignore line. */ + return 0; /* We always return entries of the requested form. */ result->h_addrtype = af; @@ -102,6 +87,10 @@ _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 +111,8 @@ _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; \ |