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       1                 :            : /*
       2                 :            :  * Copyright (c) 1991, 1992 Paul Kranenburg <pk@cs.few.eur.nl>
       3                 :            :  * Copyright (c) 1993 Branko Lankester <branko@hacktic.nl>
       4                 :            :  * Copyright (c) 1993-1996 Rick Sladkey <jrs@world.std.com>
       5                 :            :  * Copyright (c) 1996-1999 Wichert Akkerman <wichert@cistron.nl>
       6                 :            :  * Copyright (c) 2005 Roland McGrath <roland@redhat.com>
       7                 :            :  * Copyright (c) 2007-2015 Dmitry V. Levin <ldv@altlinux.org>
       8                 :            :  * All rights reserved.
       9                 :            :  *
      10                 :            :  * Redistribution and use in source and binary forms, with or without
      11                 :            :  * modification, are permitted provided that the following conditions
      12                 :            :  * are met:
      13                 :            :  * 1. Redistributions of source code must retain the above copyright
      14                 :            :  *    notice, this list of conditions and the following disclaimer.
      15                 :            :  * 2. Redistributions in binary form must reproduce the above copyright
      16                 :            :  *    notice, this list of conditions and the following disclaimer in the
      17                 :            :  *    documentation and/or other materials provided with the distribution.
      18                 :            :  * 3. The name of the author may not be used to endorse or promote products
      19                 :            :  *    derived from this software without specific prior written permission.
      20                 :            :  *
      21                 :            :  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
      22                 :            :  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
      23                 :            :  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
      24                 :            :  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
      25                 :            :  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
      26                 :            :  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
      27                 :            :  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
      28                 :            :  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
      29                 :            :  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
      30                 :            :  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
      31                 :            :  */
      32                 :            : 
      33                 :            : #include "defs.h"
      34                 :            : 
      35                 :            : #define MS_MGC_VAL      0xc0ed0000      /* old magic mount flag number */
      36                 :            : #define MS_MGC_MSK      0xffff0000      /* old magic mount flag mask */
      37                 :            : 
      38                 :            : #include "xlat/mount_flags.h"
      39                 :            : 
      40                 :         36 : SYS_FUNC(mount)
      41                 :            : {
      42                 :         36 :         bool ignore_type = false;
      43                 :         36 :         bool ignore_data = false;
      44                 :         36 :         bool old_magic = false;
      45                 :         36 :         kernel_ulong_t flags = tcp->u_arg[3];
      46                 :            : 
      47                 :            :         /* Discard magic */
      48         [ +  + ]:         36 :         if ((flags & MS_MGC_MSK) == MS_MGC_VAL) {
      49                 :         12 :                 flags &= ~MS_MGC_MSK;
      50                 :         12 :                 old_magic = true;
      51                 :            :         }
      52                 :            : 
      53         [ +  + ]:         36 :         if (flags & MS_REMOUNT)
      54                 :          6 :                 ignore_type = true;
      55         [ +  + ]:         30 :         else if (flags & (MS_BIND | MS_MOVE | MS_SHARED
      56                 :            :                           | MS_PRIVATE | MS_SLAVE | MS_UNBINDABLE))
      57                 :          6 :                 ignore_type = ignore_data = true;
      58                 :            : 
      59                 :         36 :         printpath(tcp, tcp->u_arg[0]);
      60                 :         36 :         tprints(", ");
      61                 :            : 
      62                 :         36 :         printpath(tcp, tcp->u_arg[1]);
      63                 :         36 :         tprints(", ");
      64                 :            : 
      65         [ +  + ]:         36 :         if (ignore_type)
      66                 :         12 :                 printaddr(tcp->u_arg[2]);
      67                 :            :         else
      68                 :         24 :                 printstr(tcp, tcp->u_arg[2]);
      69                 :         36 :         tprints(", ");
      70                 :            : 
      71         [ +  + ]:         36 :         if (old_magic) {
      72                 :         12 :                 tprints("MS_MGC_VAL");
      73         [ +  + ]:         12 :                 if (flags)
      74                 :          6 :                         tprints("|");
      75                 :            :         }
      76 [ +  + ][ -  + ]:         36 :         if (flags || !old_magic)
      77                 :         30 :                 printflags64(mount_flags, flags, "MS_???");
      78                 :         36 :         tprints(", ");
      79                 :            : 
      80         [ +  + ]:         36 :         if (ignore_data)
      81                 :          6 :                 printaddr(tcp->u_arg[4]);
      82                 :            :         else
      83                 :         30 :                 printstr(tcp, tcp->u_arg[4]);
      84                 :            : 
      85                 :         36 :         return RVAL_DECODED;
      86                 :            : }