RE: [squid-users] Re-reding /etc/hosts file with -k

> -----Original Message-----
> From: Andre D. Correa [mailto:andre.correa@pobox.com]
> Sent: Thursday, July 07, 2005 11:21 AM
> To: squid-users@squid-cache.org; andre.correa@pobox.com
> Subject: [squid-users] Re-reding /etc/hosts file with -k
>
>
>
> Hi Squid-users, my question is more to the dev list but I'm not a Squid
> developer so its better not disturb then.
>
> In my setup I need to be able to send a signal to Squid to force it to
> read /etc/hosts again. I need it because I have a PPPoE concentrator and
> the hosts file is updated each time a new user connects or disconnects.
>
> I couldn't find a way to enable this behavior so I decided to mess with
> the code a little and this is where I need a helping hand.

To the best of my knowledge, squid re-reads the host file on a "-k reconfigure". Looking at mainReconfigure(void) confirms this.

>
> Looking arround I found the function idnsInit() that looks promissing. I
> added something like this to src/main.c
>

The function you would want to use is parseEtcHosts()...

> static void mainResetDNS(void);
>
> ...
>
> static void
> mainResetDNS(void)
> {
> idnsInit();
> }
>
> ...
>
> At mainInitialize()
>
> ...
> squid_signal(SIGRTMIN, mainResetDNS, SA_NODEFER);
> ...
>
> and to get a command line option to send the signal I made something
> like this:
>
> ...
> case 'k':
> if ((int) strlen(optarg) < 1)
> usage();
> if (!strncmp(optarg, "dns", strlen(optarg)))
> opt_send_signal = SIGRTMIN;
> else if (!strncmp(optarg, "reconfigure", strlen(optarg)))
> opt_send_signal = SIGHUP;
> ...
>
>
> Compilation happens with no probs and when I run "squid -k dns" it
> re-reads the hosts file but it kills childs too. Killing child
> proccesess stop all active transfers and this is something that cannot
> happen.
>
> Can anybody help me find the right function(s) to call so it re-reads
> the hosts file?
>
> Thanks for the attetion...
>
> ------------------------------
> Andre D. Correa, CISSP
> andre.correa (at) pobox.com
> http://andre.hiperlinks.com.br
> Sao Paulo / SP / Brazil
> ------------------------------

Hope this helps,

Chris
Received on Thu Jul 07 2005 - 17:32:10 MDT