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patches/glibc/2.9/170-2.10-dns-no-gethostbyname4.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/2.9/0080_all_glibc-2.10-dns-no-gethostbyname4.patch

     2 

     3 -= BEGIN original header =-

     4 http://sourceware.org/bugzilla/show_bug.cgi?id=7060

     5 http://bugs.gentoo.org/250468

     6 

     7 The gethostbyname4() lookup method is problematic since it fires out both

     8 the A and AAAA DNS queries in parallel and over the same socket. This

     9 should work in theory, but it turns out that many cheap DSL modems and

    10 similar devices have buggy DNS servers - if the AAAA query arrives too

    11 quickly after the A query, the server will generate only a single reply

    12 with the A query id but returning an error for the AAAA query; we get

    13 stuck waiting for the second reply.

    14 

    15 For gethostbyname4() users affected, disabling IPv6 in the system might

    16 work around the issue, unfortunately it only helps with applications

    17 using AI_ADDRCONFIG (e.g. Firefox); some (notably e.g. Pidgin) neglect

    18 to do that.

    19 

    20 Real fix should be using separate ports for the A and AAAA queries.

    21 

    22 -= END original header =-

    23 

    24 diff -durN glibc-2_9.orig/resolv/Versions glibc-2_9/resolv/Versions

    25 --- glibc-2_9.orig/resolv/Versions	2008-08-01 19:15:34.000000000 +0200

    26 +++ glibc-2_9/resolv/Versions	2009-02-02 22:00:46.000000000 +0100

    27 @@ -102,7 +102,7 @@

    28      _nss_dns_gethostbyname_r; _nss_dns_getnetbyaddr_r;

    29      _nss_dns_getnetbyname_r; _nss_dns_getcanonname_r;

    30      _nss_dns_gethostbyaddr2_r;

    31 -    _nss_dns_gethostbyname4_r;

    32 +#    _nss_dns_gethostbyname4_r;

    33    }

    34  }

    35
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