cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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ca-get-msg.rst (800B)


      1.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
      2.. c:namespace:: DTV.ca
      3
      4.. _CA_GET_MSG:
      5
      6==========
      7CA_GET_MSG
      8==========
      9
     10Name
     11----
     12
     13CA_GET_MSG
     14
     15Synopsis
     16--------
     17
     18.. c:macro:: CA_GET_MSG
     19
     20``int ioctl(fd, CA_GET_MSG, struct ca_msg *msg)``
     21
     22Arguments
     23---------
     24
     25``fd``
     26  File descriptor returned by a previous call to :c:func:`open()`.
     27
     28``msg``
     29  Pointer to struct :c:type:`ca_msg`.
     30
     31Description
     32-----------
     33
     34Receives a message via a CI CA module.
     35
     36.. note::
     37
     38   Please notice that, on most drivers, this is done by reading from
     39   the /dev/adapter?/ca? device node.
     40
     41Return Value
     42------------
     43
     44On success 0 is returned.
     45
     46On error -1 is returned, and the ``errno`` variable is set
     47appropriately.
     48
     49Generic error codes are described at the
     50:ref:`Generic Error Codes <gen-errors>` chapter.