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       1                 :            : /*
       2                 :            :  * Copyright (c) 2016 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 DEF_MPERS_TYPE(struct_msghdr)
      31                 :            : 
      32                 :            : #include "msghdr.h"
      33                 :            : typedef struct msghdr struct_msghdr;
      34                 :            : 
      35                 :            : #include MPERS_DEFS
      36                 :            : 
      37                 :            : /*
      38                 :            :  * On success, return the number of fetched bytes.
      39                 :            :  * On error, return 0;
      40                 :            :  *
      41                 :            :  * This function cannot use umove_or_printaddr because
      42                 :            :  * it is called by dumpio and therefore cannot print anything.
      43                 :            :  */
      44                 :            : 
      45                 :     212202 : MPERS_PRINTER_DECL(int, fetch_struct_msghdr,
      46                 :            :                    struct tcb *const tcp, const kernel_ulong_t addr,
      47                 :            :                    void *const p)
      48                 :            : {
      49                 :     212202 :         struct msghdr *const p_native = p;
      50                 :            :         struct_msghdr v_compat;
      51                 :            : 
      52                 :            :         if (sizeof(*p_native) == sizeof(v_compat))
      53         [ +  + ]:     183875 :                 return umove(tcp, addr, p_native) ? 0 : sizeof(*p_native);
      54                 :            : 
      55         [ +  + ]:      28327 :         if (umove(tcp, addr, &v_compat))
      56                 :          3 :                 return 0;
      57                 :            : 
      58                 :      28324 :         p_native->msg_name = (void *) (unsigned long)
      59                 :      28324 :          v_compat.msg_name;
      60                 :            : 
      61                 :      28324 :         p_native->msg_namelen =
      62                 :      28324 :          v_compat.msg_namelen;
      63                 :            : 
      64                 :      28324 :         p_native->msg_iov = (void *) (unsigned long)
      65                 :      28324 :          v_compat.msg_iov;
      66                 :            : 
      67                 :      28324 :         p_native->msg_iovlen =
      68                 :      28324 :          v_compat.msg_iovlen;
      69                 :            : 
      70                 :      28324 :         p_native->msg_control = (void *) (unsigned long)
      71                 :      28324 :          v_compat.msg_control;
      72                 :            : 
      73                 :      28324 :         p_native->msg_controllen =
      74                 :      28324 :          v_compat.msg_controllen;
      75                 :            : 
      76                 :      28324 :         p_native->msg_flags =
      77                 :      28324 :          v_compat.msg_flags;
      78                 :            : 
      79                 :      28327 :         return sizeof(v_compat);
      80                 :            : }