Hello,

the „-w“ parameter is meant for specifying the working directory. Usually the 
system specific init scipts are setup in a way to allow Kamailio to write to a 
proper directory where it is can place files.

So, it can be flexible configured as necessary. About code extensions – have 
not looked into that particular function right now, but pull requests can be 
always created and will be reviewed by the developers.

Cheers,

Henning

--
Henning Westerholt – https://skalatan.de/blog/
Kamailio services – https://gilawa.com<https://gilawa.com/>

From: sr-users <sr-users-boun...@lists.kamailio.org> On Behalf Of Leonid 
Fainshtein
Sent: Wednesday, September 30, 2020 6:01 PM
To: Kamailio (SER) - Users Mailing List <sr-users@lists.kamailio.org>
Subject: Re: [SR-Users] Kamailio fails to start when tls module parameter 
'config' contains a folder name

Actually, it is possible to use the libc 'P_tmpdir' macro in order to get the 
temporary folder name.

Best regards,
Leonid Fainshtein

On Wed, Sep 30, 2020 at 6:35 PM Leonid Fainshtein 
<leonid.fainsht...@xorcom.com<mailto:leonid.fainsht...@xorcom.com>> wrote:
Hi,
I am using Kamailio 5.4.1 installed from the packages on Ubuntu 18.04.
When I define 'modparam("tls", "config", "<folder>")', Kamailio fails to start:

ERROR: tls [tls_config.c:418]: tls_load_config(): cannot make tmp file 
configrcCczj
ERROR: <core> [core/sr_module.c:849]: init_mod(): Error while initializing 
module tls (/usr/lib/x86_64-linux-gnu/kamailio/modules/tls.so)

I checked the tls_load_config() function and found that when a folder is 
defined in the 'config' parameter, the function tries to open a temporary file 
in the working directory. I believe that the working directory at that point is 
the folder where Kamailio was started: /usr/sbin.
I succeeded to launch Kamailio in two ways:
Method 1:  copy 'kamailio' to /tmp and modify kamalio.service accordingly. This 
experiment result made me think that the working folder is the folder where 
kamailio is started.
Method 2: add Kamailio command line  parameter "-w /tmp"

(I also tried to define the Systemd 'WorkingDirectory' parameter but it didn't 
have any effect.)

I think that the ultimate solution for this problem is to modify the 
tls_load_config() function in such a way that it will open the temporary file 
in a folder that is intended for the temporary files. For example, the /tmp 
folder in Linux and *BSD systems. I guess that /tmp is a good place in MacOS as 
well.

Best regards,
Leonid Fainshtein
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