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ca-send-msg.rst

ca-send-msg.rst 802 B
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  1. .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
    2. 

  2. .. c:namespace:: DTV.ca
    3. 

  3. 

  4. .. _CA_SEND_MSG:
    5. 

  5. 

  6. ===========
    7. 

  7. CA_SEND_MSG
    8. 

  8. ===========
    9. 

  9. 

  10. Name
    11. 

  11. ----
    12. 

  12. 

  13. CA_SEND_MSG
    14. 

  14. 

  15. Synopsis
    16. 

  16. --------
    17. 

  17. 

  18. .. c:macro:: CA_SEND_MSG
    19. 

  19. 

  20. ``int ioctl(fd, CA_SEND_MSG, struct ca_msg *msg)``
    21. 

  21. 

  22. Arguments
    23. 

  23. ---------
    24. 

  24. 

  25. ``fd``
    26. 

  26.   File descriptor returned by a previous call to :c:func:`open()`.
    27. 

  27. 

  28. ``msg``
    29. 

  29.   Pointer to struct :c:type:`ca_msg`.
    30. 

  30. 

  31. Description
    32. 

  32. -----------
    33. 

  33. 

  34. Sends a message via a CI CA module.
    35. 

  35. 

  36. .. note::
    37. 

  37. 

  38.    Please notice that, on most drivers, this is done by writing
    39. 

  39.    to the /dev/adapter?/ca? device node.
    40. 

  40. 

  41. Return Value
    42. 

  42. ------------
    43. 

  43. 

  44. On success 0 is returned.
    45. 

  45. 

  46. On error -1 is returned, and the ``errno`` variable is set
    47. 

  47. appropriately.
    48. 

  48. 

  49. Generic error codes are described at the
    50. 

  50. :ref:`Generic Error Codes <gen-errors>` chapter.
    51.