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patches/glibc/2.9/120-_nss_dns_gethostbyaddr2_r-check-and-adjust-the-buffer-alignment.patch
author Cody Schafer <dev@codyps.com>
Fri May 09 19:13:49 2014 -0700 (2014-05-09)
changeset 3312 4876ff97e039
parent 1201 c9967a6e3b25
permissions -rw-r--r--
cc/gcc: allow CC_EXTRA_CONFIG_ARRAY on baremetal

The final bare-metal compiler is built using the core backend.
Currently the core uses the CC_CORE_EXTRA_CONFIG_ARRAY variable.

While this works as supposed to, this can leave the user puzzled
in the menuconfig, since all he can see is the core options, not
the final options.

Only show the core options if any of the core passes are needed,
and use the final options in the core-backend if we're issuing
the bare-metal compiler.

Signed-off-by: Cody P Schafer <dev@codyps.com>
[yann.morin.1998@free.fr: hide core options if no core pass needed;
use final option in core backend if issuing the bare-metal compiler]
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Message-Id: <22181e546ba746202489.1399688067@localhost>
Patchwork-Id: 347586 
     1 Original patch from: gentoo/src/patchsets/glibc/2.9/0050_all_glibc-_nss_dns_gethostbyaddr2_r-check-and-adjust-the-buffer-alignment.patch

     2 

     3 -= BEGIN original header =-

     4 http://sourceware.org/ml/libc-alpha/2009-01/msg00000.html

     5 

     6 From 8ad7030880eaa18dcabf8e284e79026301fd3fa4 Mon Sep 17 00:00:00 2001

     7 From: Ulrich Drepper <drepper@redhat.com>

     8 Date: Thu, 8 Jan 2009 00:02:38 +0000

     9 Subject: [PATCH] (_nss_dns_gethostbyaddr2_r): Check and adjust the buffer alignment.

    10 

    11 -= END original header =-

    12 

    13 diff -durN glibc-2_9.orig/resolv/nss_dns/dns-host.c glibc-2_9/resolv/nss_dns/dns-host.c

    14 --- glibc-2_9.orig/resolv/nss_dns/dns-host.c	2008-11-12 08:52:20.000000000 +0100

    15 +++ glibc-2_9/resolv/nss_dns/dns-host.c	2009-02-02 22:00:36.000000000 +0100

    16 @@ -364,6 +364,19 @@

    17    int n, status;

    18    int olderr = errno;

    19  

    20 + uintptr_t pad = -(uintptr_t) buffer % __alignof__ (struct host_data);

    21 + buffer += pad;

    22 + buflen = buflen > pad ? buflen - pad : 0;

    23 +

    24 + if (__builtin_expect (buflen < sizeof (struct host_data), 0))

    25 +   {

    26 +     *errnop = ERANGE;

    27 +     *h_errnop = NETDB_INTERNAL;

    28 +     return NSS_STATUS_TRYAGAIN;

    29 +   }

    30 +

    31 + host_data = (struct host_data *) buffer;

    32 +

    33    if (__res_maybe_init (&_res, 0) == -1)

    34      return NSS_STATUS_UNAVAIL;

    35
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