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patches/glibc/2.9/250-resolv-dynamic.patch
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Sat Dec 31 16:23:27 2011 +0100 (2011-12-31)
changeset 2814 3dc2727ebffc
parent 1201 c9967a6e3b25
permissions -rw-r--r--
cc/gcc: add option to use system zlib

In some cases, it might be desirable to use the system zlib

Eg. because latest gcc seem to be totally borked when it comes
to multilib, and tries to build a multilib host zlib, when it
is *absolutely* *not* needed: we want mulitlib on the target,
not on the host! Sigh... :-(

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr> 
     1 Original patch from: gentoo/src/patchsets/glibc/2.9/1055_all_glibc-resolv-dynamic.patch

     2 

     3 -= BEGIN original header =-

     4 ripped from SuSE

     5 

     6 if /etc/resolv.conf is updated, then make sure applications

     7 already running get the updated information.

     8 

     9 http://bugs.gentoo.org/177416

    10 

    11 -= END original header =-

    12 

    13 diff -durN glibc-2_9.orig/resolv/res_libc.c glibc-2_9/resolv/res_libc.c

    14 --- glibc-2_9.orig/resolv/res_libc.c	2006-10-11 10:59:28.000000000 +0200

    15 +++ glibc-2_9/resolv/res_libc.c	2009-02-02 22:00:57.000000000 +0100

    16 @@ -22,6 +22,7 @@

    17  #include <arpa/nameser.h>

    18  #include <resolv.h>

    19  #include <bits/libc-lock.h>

    20 +#include <sys/stat.h>

    21  

    22  

    23  /* The following bit is copied from res_data.c (where it is #ifdef'ed

    24 @@ -95,6 +96,20 @@

    25  __res_maybe_init (res_state resp, int preinit)

    26  {

    27  	if (resp->options & RES_INIT) {

    28 +		static time_t last_mtime, last_check;

    29 +		time_t now;

    30 +		struct stat statbuf;

    31 +		

    32 +		time (&now);

    33 +		if (now != last_check) {

    34 +			last_check = now;

    35 +			if (stat (_PATH_RESCONF, &statbuf) == 0 && last_mtime != statbuf.st_mtime) {

    36 +				last_mtime = statbuf.st_mtime;

    37 +				atomicinclock (lock);

    38 +				atomicinc (__res_initstamp);

    39 +				atomicincunlock (lock);

    40 +			}

    41 +		}

    42  		if (__res_initstamp != resp->_u._ext.initstamp) {

    43  			if (resp->nscount > 0) {

    44  				__res_iclose (resp, true);
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