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patches/glibc/ports-2.13/180-resolv-dynamic.patch
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Tue Aug 02 18:26:53 2011 +0200 (2011-08-02)
changeset 2592 4908eb2b6f17
permissions -rw-r--r--
scripts/functions: cvs retrieval first tries the mirror for tarballs

The cvs download helper looks for the local tarballs dir to see if it
can find a pre-downloaded tarball, and if it does not find it, does
the actual fetch to upstream via cvs.

In the process, it does not even try to get a tarball from the local
mirror, which can be useful if the mirror has been pre-populated
manually (or with a previously downloaded tree).

Fake a tarball get with the standard tarball-download helper, but
without specifying any upstream URL, which makes the helper directly
try the LAN mirror.

Of course, if no mirror is specified, no URL wil be available, and
the standard cvs retrieval will kick in.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr> 
     1 ripped from SuSE

     2 

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

     4 already running get the updated information.

     5 

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

     7 

     8 diff -durN glibc-2.13.orig/resolv/res_libc.c glibc-2.13/resolv/res_libc.c

     9 --- glibc-2.13.orig/resolv/res_libc.c	2009-02-07 05:27:42.000000000 +0100

    10 +++ glibc-2.13/resolv/res_libc.c	2009-11-13 00:49:59.000000000 +0100

    11 @@ -22,6 +22,7 @@

    12  #include <arpa/nameser.h>

    13  #include <resolv.h>

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

    15 +#include <sys/stat.h>

    16  

    17  

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

    19 @@ -95,6 +96,20 @@

    20  __res_maybe_init (res_state resp, int preinit)

    21  {

    22  	if (resp->options & RES_INIT) {

    23 +		static time_t last_mtime, last_check;

    24 +		time_t now;

    25 +		struct stat statbuf;

    26 +		

    27 +		time (&now);

    28 +		if (now != last_check) {

    29 +			last_check = now;

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

    31 +				last_mtime = statbuf.st_mtime;

    32 +				atomicinclock (lock);

    33 +				atomicinc (__res_initstamp);

    34 +				atomicincunlock (lock);

    35 +			}

    36 +		}

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

    38  			if (resp->nscount > 0)

    39  				__res_iclose (resp, true);
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