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       1                 :            : /*
       2                 :            :  * Copyright (c) 2015 Dmitry V. Levin <ldv@altlinux.org>
       3                 :            :  * All rights reserved.
       4                 :            :  *
       5                 :            :  * Redistribution and use in source and binary forms, with or without
       6                 :            :  * modification, are permitted provided that the following conditions
       7                 :            :  * are met:
       8                 :            :  * 1. Redistributions of source code must retain the above copyright
       9                 :            :  *    notice, this list of conditions and the following disclaimer.
      10                 :            :  * 2. Redistributions in binary form must reproduce the above copyright
      11                 :            :  *    notice, this list of conditions and the following disclaimer in the
      12                 :            :  *    documentation and/or other materials provided with the distribution.
      13                 :            :  * 3. The name of the author may not be used to endorse or promote products
      14                 :            :  *    derived from this software without specific prior written permission.
      15                 :            :  *
      16                 :            :  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
      17                 :            :  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
      18                 :            :  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
      19                 :            :  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
      20                 :            :  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
      21                 :            :  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
      22                 :            :  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
      23                 :            :  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
      24                 :            :  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
      25                 :            :  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
      26                 :            :  */
      27                 :            : 
      28                 :            : #include "defs.h"
      29                 :            : 
      30                 :            : #include "xlat/membarrier_cmds.h"
      31                 :            : 
      32                 :         18 : SYS_FUNC(membarrier)
      33                 :            : {
      34         [ +  + ]:         18 :         if (entering(tcp)) {
      35                 :         12 :                 int cmd = tcp->u_arg[0], flags = tcp->u_arg[1];
      36                 :            : 
      37                 :         12 :                 printxval(membarrier_cmds, cmd, "MEMBARRIER_CMD_???");
      38                 :         12 :                 tprintf(", %d", flags);
      39                 :            : 
      40         [ +  + ]:         12 :                 return cmd ? RVAL_DECODED : 0;
      41                 :            :         }
      42                 :            : 
      43 [ +  - ][ -  + ]:          6 :         if (syserror(tcp) || !tcp->u_rval)
      44                 :          0 :                 return 0;
      45                 :            : 
      46                 :          6 :         tcp->auxstr = sprintflags("", membarrier_cmds,
      47                 :          6 :                                   (kernel_ulong_t) tcp->u_rval);
      48                 :          6 :         return RVAL_HEX | RVAL_STR;
      49                 :            : }