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From: Allasso Travesser <allassopraise@gmail.com>
In-Reply-To: <B8B76965-0804-4DB5-A60F-D2B2E6226092@webthing.com>
Date: Sun, 8 Dec 2013 06:38:05 -0700
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References: <0A1D10568F2340D48B1BEA6EE793AA75@RobertPC>
 <l8016s$vc2$1@ger.gmane.org> <4E4AF26C5F3B4DBE99343D724302E9F5@RobertPC>
 <l80jq2$cki$1@ger.gmane.org> <0F1A0D92389C4486B1EED54899C98199@RobertPC>
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 <B8B76965-0804-4DB5-A60F-D2B2E6226092@webthing.com>
To: users@httpd.apache.org
Subject: Re: [users@httpd] Seg fault when assigning value in AP_INIT_TAKE1
 callback

Thank you for your input, Nick.  I see what you mean about using a full =
example; not yet understanding how modules work, it didn=92t occur to me =
that cfg would be getting initialized somewhere else.  My c programming =
skills are also rudimentary.

Regarding mod_auth_form, I am using Apache 2.2.  I tried just loading a =
2.4 module, but I get errors.  If I knew more about Apache and how =
modules work, I could probably understand why I am getting the errors.  =
Hence, the road I am on, as I find it helpful to learn this stuff =
anyway.  (I am on Ubuntu 10.04, and there is no official package for =
Apache 2.4 yet available, and being a nominal linux user I would rather =
stick with the mainstream)

Thanks for the help :-)

Allasso


On Dec 8, 2013, at 12:38 AM, Nick Kew <nick@webthing.com> wrote:

>=20
> On 8 Dec 2013, at 04:17, Allasso Travesser wrote:
>=20
>> Hello,
>>=20
>> Learning to create modules, I want to read configuration directives. =
I used the following example out of =93The Apache Modules Book=94 (Nick =
Kew).  It compiles fine, however, when I restart apache, I get =
segmentation fault:
>=20
> So why not start with a complete example, then reduce it step-by-step
> to what you have?  That way you see where it falls apart and figure =
out
> why what you just lost mattered.
>=20
> In this case ...
>=20
>> The fault seems to be a result of this line of code (no error results =
if it is removed):
>>=20
>>  ((txt_cfg*)cfg)->header =3D val ;
>=20
> =85 cfg needs to have been initialised, but ...
>=20
>> module AP_MODULE_DECLARE_DATA customauthform_module =3D
>> {
>>    STANDARD20_MODULE_STUFF,
>>    NULL,
>>    NULL,
>>    NULL,
>>    NULL,
>>    mod_cmds,
>>    register_hooks,
>> };
>=20
> =85 your initialisation function is NULL.
>=20
> (judging by the name of your module, maybe the now-standard
> mod_auth_form would be a good startingpoint for you?)
>=20
> --=20
> Nick Kew
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>=20


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