Re: [Xenomai] Using pipes in 3.0rc

[Philippe Gerum <rpm@xenomai.org>]

On 10/28/2014 02:44 PM, Registrierungen wrote:
> Thanks for your support.
> 
> Unfortainly it din'twork for me.
> I patched and recompiled and installed xenomai and my app,
> but i have still the same error.
> 
> Have you got another idea, or need some other informations from my side?

You may want to trace your app with gdb, configuring with
--enable-debug=full, then single-stepping in rt_pipe_create() to
pinpoint the failing call in there.

> 
> Sascha
> 
> Am 28.10.2014 11:01, schrieb Philippe Gerum:
>> On 10/28/2014 10:25 AM, Registrierungen wrote:
>>> Hello,
>>>
>>> i try to switch with my working project from Xenomai 2.6 to 3.0rc
>>> Cobaltusing the native/alchemy skin.
>>>
>>> Creating tasks,etc. seems to works fine.
>>>
>>> If i try to open a pipe from the realtime taks using rt_pipe_create it
>>> returns with the error -88.
>> This is -ENOTSOCK, you can check all error codes there:
>> /usr/include/asm-generic/errno-base.h
>> /usr/include/asm-generic/errno.h
>>
>> ENOTSOCK is not raised by the alchemy API, so this must be a syscall
>> taking the wrong route to the glibc in the core lib.
>> Please try this patch:
>>
>> diff --git a/lib/alchemy/pipe.c b/lib/alchemy/pipe.c
>> index 93da9be..439a00f 100644
>> --- a/lib/alchemy/pipe.c
>> +++ b/lib/alchemy/pipe.c
>> @@ -166,8 +166,8 @@ int rt_pipe_create(RT_PIPE *pipe,
>>       }
>>         if (poolsize > 0) {
>> -        ret = setsockopt(pcb->sock, SOL_XDDP, XDDP_POOLSZ,
>> -                 &poolsize, sizeof(poolsize));
>> +        ret = __RT(setsockopt(pcb->sock, SOL_XDDP, XDDP_POOLSZ,
>> +                      &poolsize, sizeof(poolsize)));
>>           if (ret)
>>               goto fail_sockopt;
>>       }
>> @@ -181,7 +181,7 @@ int rt_pipe_create(RT_PIPE *pipe,
>>       memset(&saddr, 0, sizeof(saddr));
>>       saddr.sipc_family = AF_RTIPC;
>>       saddr.sipc_port = minor;
>> -    ret = bind(sock, (struct sockaddr *)&saddr, sizeof(saddr));
>> +    ret = __RT(bind(sock, (struct sockaddr *)&saddr, sizeof(saddr)));
>>       if (ret)
>>           goto fail_sockopt;
>>  
>>> Has anything changed handling pipes in 3.0?
>> All user-visible changes are reported here:
>> http://localhost/xenomai/migrating-from-xenomai-2-x-to-3-x/
>>
> 
> 


-- 
Philippe.