Rodrigo,
First of all, sorry for my last response. I was out of line. Appologies.
A FIFO file is a pipe, not a regular file. You cannot edit it like a
normal text file with vi, for instance. A FIFO is a special inode that
transports data between a live process and the standart input. You can
paste with "echo" lots of data into the FIFO file and the data will get
to the running process in the FIFO way, first data in - first data out
(to the process).
If the process creating the FIFO file is run by root, you must be root
that is sending the data to the file. If the process that is creating
the FIFO file is not running, the file should not be left in the
filesystem. So, if you try to edit (sic!) the file, while the creating
process is not running, you will get something like "file not found", or
if you are trying to send data into the file as user rodrigo while the
process is running as user root, you will get an error.
I made an PHP script for my purpose, that is sending commands to my
Opensips FIFO file and reading the result of that. The script is run by
the same user as Opensips. If I try to run the script while Opensips is
not running, the error always could be as "file not found".
If you are writing an C progam to send commands to the opensips FIFO
file, first of all make sure you are running your program as the sam
user as the Opensips. Second, make sure that Opensips is running. Then
write and read results from that file in your C program.
All the best,
M.Ionut
On 02/12/2015 18:47, Liviu Chircu wrote:
Hi Rodrigo,
Most likely you're starting opensips as root user, however you're
attempting to write to the FIFO file on behalf of an unprivileged user.
So either do "sudo echo_to_file_command" or just start OpenSIPS in
unprivileged mode.
Here's my FIFO file, I can write to it:
[liviu ◄ Rivendell ~]$ ls -la /tmp/opensips_fifo
prw------- 1 liviu liviu 0 dec 2 11:02 /tmp/opensips_fifo
BR,
Liviu Chircu
OpenSIPS Developer
http://www.opensips-solutions.com
On 02.12.2015 12:53, Rodrigo Pimenta Carvalho wrote:
Ok. thanks.
I will search about it in operational system context. I used to think
that such fifo file was 100% supported by OpenSIPS. I didn't realize
that it could be something of unix.
I'm kind of a beginner in unix or linux.
Regards.
RODRIGO PIMENTA CARVALHO
Inatel Competence Center
Software
Ph: +55 35 3471 9200 RAMAL 979
------------------------------------------------------------------------
*De:* [email protected]
<[email protected]> em nome de Ionut Muntean
<[email protected]>
*Enviado:* terça-feira, 1 de dezembro de 2015 17:19
*Para:* [email protected]
*Assunto:* Re: [OpenSIPS-Users] How can I write down the MI commands
into the FIFO file, using an editor.
Come on, read about FIFO in Linux, lot's of info on the net! Sorry,
but you lack some basic Linux OS knowledge ... The FIFO is active and
RW if the creating process is active and if you have the permissions
to do this.
On 01/12/2015 21:13, Rodrigo Pimenta Carvalho wrote:
Ok. Thanks.
But, if I cann't edit the file, how could a program (let's say a C
program) write into such file?
I will create a executable that will have to write down MI commands
into the FIFO file.
Any hint will be very helpful!
Thanks a lot!
RODRIGO PIMENTA CARVALHO
Inatel Competence Center
Software
Ph: +55 35 3471 9200 RAMAL 979
------------------------------------------------------------------------
*De:* [email protected]
<[email protected]> em nome de Brian :: <[email protected]>
*Enviado:* terça-feira, 1 de dezembro de 2015 16:38
*Para:* OpenSIPS users mailling list
*Assunto:* Re: [OpenSIPS-Users] How can I write down the MI commands
into the FIFO file, using an editor.
This is not the correct way to go about what you are trying to achieve.
You *cant* edit the fifo file. You use (correctly configured)
opensipsctl fifo to send commands in realtime
On Tue, Dec 1, 2015 at 5:04 PM, Rodrigo Pimenta Carvalho
<[email protected] <mailto:[email protected]>> wrote:
Dear OpenSIPS-users,
I my opensips.cfg I have:
---------------------------------------------------------
##### FIFO Management Interface
loadmodule "mi_fifo.so"
modparam("mi_fifo", "fifo_name", "/tmp/FifoCommands.txt") #
arquivo para ler comandos solicitados por aplicações externas.
modparam("mi_fifo", "reply_dir", "/tmp") #
diretório onde serão escritas as respostas do OpenSIPS, que
serão lidas pelas aplicações externas.
modparam("mi_fifo", "fifo_mode", 0777) #
permissão de scrita e leitura.
modparam("mi_fifo", "fifo_group", "root") #
grupo de usuários para o arquivo.
modparam("mi_fifo", "fifo_user", "root") #
usuário do arquivo.
----------------------------------------------------------
When OpenSIPS is not running, I can edit the file
FifoCommands.txt using emacs or vi, for example.
However, when OpenSIPS is running I can not. The editor tells
me that the file is read only Why? How to solve this? Any
configuration?
Any hint will be very helpful!
Thanks a lot.
RODRIGO PIMENTA CARVALHO
Inatel Competence Center
Software
Ph: +55 35 3471 9200 <tel:%2B55%2035%203471%209200> RAMAL 979
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