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Date: Thu, 19 Jun 2008 21:41:01 +0200
From: Anders Blomdell <anders.blomdell@domain.hid>
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Subject: [Xenomai-help] Weird rt_dev_socket behaviour
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To: xenomai-help <xenomai@xenomai.org>
Cc: Jan Kiszka <jan.kiszka@domain.hid>

With xenomai-2.4.2 and rtnet-0.9.10, is it expected that the following code:

  ...
  mlockall(MCL_CURRENT|MCL_FUTURE);
  rt_task_shadow(&task_self, NULL, 1, T_FPU);
  fd = rt_dev_socket(AF_PACKET, SOCK_DGRAM, 0);
  if (fd < 0) {
    fprintf(stderr, "failed to create socket %d\n", fd);
    exit(1);
  }
  ...

fails with the message "failed to create socket -12", while the following works
as expected:

  ...
  mlockall(MCL_CURRENT|MCL_FUTURE);
  rt_task_shadow(&task_self, NULL, 1, T_FPU);
  rt_task_set_mode(T_PRIMARY, 0, 0);
  fd = rt_dev_socket(AF_PACKET, SOCK_DGRAM, 0);
  if (fd < 0) {
    fprintf(stderr, "failed to create socket %d\n", fd);
    exit(1);
  }
  ...

Regards

Anders Blomdell


-- 
Anders Blomdell                  Email: anders.blomdell@domain.hid
Department of Automatic Control
Lund University                  Phone:    +46 46 222 4625
P.O. Box 118                     Fax:      +46 46 138118
SE-221 00 Lund, Sweden