LCOV - code coverage report
Current view: top level - strace - fetch_struct_flock.c (source / functions) Hit Total Coverage
Test: strace-4.18.0.129.97bbb Code Coverage Lines: 19 20 95.0 %
Date: 2017-07-31 03:46:08 Functions: 3 6 50.0 %
Legend: Lines: hit not hit | Branches: + taken - not taken # not executed Branches: 2 4 50.0 %

           Branch data     Line data    Source code
       1                 :            : /*
       2                 :            :  * Copyright (c) 2015 Dmitry V. Levin <ldv@altlinux.org>
       3                 :            :  * Copyright (c) 2015-2017 The strace developers.
       4                 :            :  * All rights reserved.
       5                 :            :  *
       6                 :            :  * Redistribution and use in source and binary forms, with or without
       7                 :            :  * modification, are permitted provided that the following conditions
       8                 :            :  * are met:
       9                 :            :  * 1. Redistributions of source code must retain the above copyright
      10                 :            :  *    notice, this list of conditions and the following disclaimer.
      11                 :            :  * 2. Redistributions in binary form must reproduce the above copyright
      12                 :            :  *    notice, this list of conditions and the following disclaimer in the
      13                 :            :  *    documentation and/or other materials provided with the distribution.
      14                 :            :  * 3. The name of the author may not be used to endorse or promote products
      15                 :            :  *    derived from this software without specific prior written permission.
      16                 :            :  *
      17                 :            :  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
      18                 :            :  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
      19                 :            :  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
      20                 :            :  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
      21                 :            :  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
      22                 :            :  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
      23                 :            :  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
      24                 :            :  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
      25                 :            :  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
      26                 :            :  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
      27                 :            :  */
      28                 :            : 
      29                 :            : #include "defs.h"
      30                 :            : 
      31                 :            : #include DEF_MPERS_TYPE(struct_flock)
      32                 :            : #include DEF_MPERS_TYPE(struct_flock64)
      33                 :            : 
      34                 :            : #include "flock.h"
      35                 :            : typedef struct_kernel_flock struct_flock;
      36                 :            : typedef struct_kernel_flock64 struct_flock64;
      37                 :            : 
      38                 :            : #include MPERS_DEFS
      39                 :            : 
      40                 :            : #define SIZEOF_MEMBER(type, member) \
      41                 :            :         sizeof(((type *) NULL)->member)
      42                 :            : 
      43                 :            : #define FLOCK_MEMBERS_EQ(type, member) \
      44                 :            :         (SIZEOF_MEMBER(struct_kernel_flock64, member) == SIZEOF_MEMBER(type, member) \
      45                 :            :          && offsetof(struct_kernel_flock64, member) == offsetof(type, member))
      46                 :            : 
      47                 :            : #define FLOCK_STRUCTS_EQ(type) \
      48                 :            :         (sizeof(struct_kernel_flock64) == sizeof(type) \
      49                 :            :          && FLOCK_MEMBERS_EQ(type, l_type) \
      50                 :            :          && FLOCK_MEMBERS_EQ(type, l_whence) \
      51                 :            :          && FLOCK_MEMBERS_EQ(type, l_start) \
      52                 :            :          && FLOCK_MEMBERS_EQ(type, l_len) \
      53                 :            :          && FLOCK_MEMBERS_EQ(type, l_pid))
      54                 :            : 
      55                 :         15 : MPERS_PRINTER_DECL(bool, fetch_struct_flock, struct tcb *const tcp,
      56                 :            :                    const kernel_ulong_t addr, void *const p)
      57                 :            : {
      58                 :         15 :         struct_kernel_flock64 *pfl = p;
      59                 :            :         struct_flock mfl;
      60                 :            : 
      61                 :            :         if (FLOCK_STRUCTS_EQ(struct_flock))
      62                 :          5 :                 return !umove_or_printaddr(tcp, addr, pfl);
      63                 :            : 
      64         [ +  - ]:         10 :         if (umove_or_printaddr(tcp, addr, &mfl))
      65                 :            :                 return false;
      66                 :            : 
      67                 :         10 :         pfl->l_type = mfl.l_type;
      68                 :         10 :         pfl->l_whence = mfl.l_whence;
      69                 :         10 :         pfl->l_start = mfl.l_start;
      70                 :         10 :         pfl->l_len = mfl.l_len;
      71                 :         10 :         pfl->l_pid = mfl.l_pid;
      72                 :         10 :         return true;
      73                 :            : }
      74                 :            : 
      75                 :          7 : MPERS_PRINTER_DECL(bool, fetch_struct_flock64, struct tcb *const tcp,
      76                 :            :                    const kernel_ulong_t addr, void *const p)
      77                 :            : {
      78                 :          7 :         struct_kernel_flock64 *pfl = p;
      79                 :            :         struct_flock64 mfl;
      80                 :            : 
      81                 :            :         if (FLOCK_STRUCTS_EQ(struct_flock64))
      82                 :          0 :                 return !umove_or_printaddr(tcp, addr, pfl);
      83                 :            : 
      84         [ +  - ]:          7 :         if (umove_or_printaddr(tcp, addr, &mfl))
      85                 :            :                 return false;
      86                 :            : 
      87                 :          7 :         pfl->l_type = mfl.l_type;
      88                 :          7 :         pfl->l_whence = mfl.l_whence;
      89                 :          7 :         pfl->l_start = mfl.l_start;
      90                 :          7 :         pfl->l_len = mfl.l_len;
      91                 :          7 :         pfl->l_pid = mfl.l_pid;
      92                 :          7 :         return true;
      93                 :            : }

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