From mboxrd@z Thu Jan  1 00:00:00 1970
From: Philippe Gerum <rpm@xenomai.org>
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Date: Thu, 16 Jul 2009 16:30:01 +0200
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Subject: Re: [Xenomai-help] rt_task_shadow returns always -EFAULT
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To: Petr Cervenka <grugh@domain.hid>
Cc: xenomai-help <xenomai@xenomai.org>

On Thu, 2009-07-16 at 15:15 +0200, Petr Cervenka wrote:
> Hello,
> the xenomai native function rt_task_shadow(...) always returns -EFAULT for me. Only happens in xenomai-2.5-rc2.
> 
> Same behaviour was also in 2.5-rc1, see note in my older post:
> https://mail.gna.org/public/xenomai-help/2009-05/msg00024.html
> 
> Example code, in the end of this post:
> https://mail.gna.org/public/xenomai-help/2009-05/msg00038.html
> 
> My configuration:
> Athlon 64 X2 4600+
> Kubuntu 7.10
> linux-2.6.29.5 (also tried 2.6.30.1)
> xenomai-2.5.-rc2

Does this still break when the name is passed as illustrated below?

--- petr.c~	2009-07-16 15:50:46.000000000 +0200
+++ petr.c	2009-07-16 16:28:31.000000000 +0200
@@ -14,11 +14,12 @@
     RT_EVENT event;
     unsigned long mask;
     RTIME start, end;
+    char name[32];
     int res;
 
     mlockall(MCL_CURRENT | MCL_FUTURE);
 
-    res = rt_task_shadow(&mainTask, "main_task", MY_PRIORITY, 0);
+    res = rt_task_shadow(&mainTask, strcpy(name, "main_task"), MY_PRIORITY, 0);
     if (res < 0) {
         printf("rt_task_shadow(): %d (%s)\n", res, strerror(-res));
     }

> 
> Best regards
> 
> Petr Cervenka
> 
> _______________________________________________
> Xenomai-help mailing list
> Xenomai-help@domain.hid
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-- 
Philippe.