LCOV - code coverage report
Current view: top level - strace - ipc_sem.c (source / functions) Hit Total Coverage
Test: strace-4.18.0.129.97bbb Code Coverage Lines: 44 44 100.0 %
Date: 2017-07-31 03:46:08 Functions: 6 6 100.0 %
Legend: Lines: hit not hit | Branches: + taken - not taken # not executed Branches: 12 12 100.0 %

           Branch data     Line data    Source code
       1                 :            : /*
       2                 :            :  * Copyright (c) 1993 Ulrich Pegelow <pegelow@moorea.uni-muenster.de>
       3                 :            :  * Copyright (c) 1993 Branko Lankester <branko@hacktic.nl>
       4                 :            :  * Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <jrs@world.std.com>
       5                 :            :  * Copyright (c) 1996-1999 Wichert Akkerman <wichert@cistron.nl>
       6                 :            :  * Copyright (c) 2003-2006 Roland McGrath <roland@redhat.com>
       7                 :            :  * Copyright (c) 2006-2015 Dmitry V. Levin <ldv@altlinux.org>
       8                 :            :  * Copyright (c) 2015-2017 The strace developers.
       9                 :            :  * All rights reserved.
      10                 :            :  *
      11                 :            :  * Redistribution and use in source and binary forms, with or without
      12                 :            :  * modification, are permitted provided that the following conditions
      13                 :            :  * are met:
      14                 :            :  * 1. Redistributions of source code must retain the above copyright
      15                 :            :  *    notice, this list of conditions and the following disclaimer.
      16                 :            :  * 2. Redistributions in binary form must reproduce the above copyright
      17                 :            :  *    notice, this list of conditions and the following disclaimer in the
      18                 :            :  *    documentation and/or other materials provided with the distribution.
      19                 :            :  * 3. The name of the author may not be used to endorse or promote products
      20                 :            :  *    derived from this software without specific prior written permission.
      21                 :            :  *
      22                 :            :  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
      23                 :            :  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
      24                 :            :  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
      25                 :            :  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
      26                 :            :  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
      27                 :            :  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
      28                 :            :  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
      29                 :            :  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
      30                 :            :  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
      31                 :            :  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
      32                 :            :  */
      33                 :            : 
      34                 :            : #include "defs.h"
      35                 :            : #include "ipc_defs.h"
      36                 :            : 
      37                 :            : #ifdef HAVE_SYS_SEM_H
      38                 :            : # include <sys/sem.h>
      39                 :            : #elif defined HAVE_LINUX_SEM_H
      40                 :            : # include <linux/sem.h>
      41                 :            : #endif
      42                 :            : 
      43                 :            : #include "xlat/semctl_flags.h"
      44                 :            : #include "xlat/semop_flags.h"
      45                 :            : 
      46                 :            : #if defined HAVE_SYS_SEM_H || defined HAVE_LINUX_SEM_H
      47                 :            : static bool
      48                 :         16 : print_sembuf(struct tcb *tcp, void *elem_buf, size_t elem_size, void *data)
      49                 :            : {
      50                 :         16 :         const struct sembuf *sb = elem_buf;
      51                 :            : 
      52                 :         16 :         tprintf("{%u, %d, ", sb->sem_num, sb->sem_op);
      53                 :         16 :         printflags(semop_flags, (unsigned short) sb->sem_flg, "SEM_???");
      54                 :         16 :         tprints("}");
      55                 :            : 
      56                 :         16 :         return true;
      57                 :            : }
      58                 :            : #endif
      59                 :            : 
      60                 :            : static void
      61                 :         24 : tprint_sembuf_array(struct tcb *const tcp, const kernel_ulong_t addr,
      62                 :            :                     const unsigned int count)
      63                 :            : {
      64                 :            : #if defined HAVE_SYS_SEM_H || defined HAVE_LINUX_SEM_H
      65                 :            :         struct sembuf sb;
      66                 :         24 :         print_array(tcp, addr, count, &sb, sizeof(sb),
      67                 :            :                     umoven_or_printaddr, print_sembuf, 0);
      68                 :            : #else
      69                 :            :         printaddr(addr);
      70                 :            : #endif
      71                 :         24 :         tprintf(", %u", count);
      72                 :         24 : }
      73                 :            : 
      74                 :         10 : SYS_FUNC(semop)
      75                 :            : {
      76                 :         10 :         tprintf("%d, ", (int) tcp->u_arg[0]);
      77         [ +  + ]:         10 :         if (indirect_ipccall(tcp)) {
      78                 :          5 :                 tprint_sembuf_array(tcp, tcp->u_arg[3], tcp->u_arg[1]);
      79                 :            :         } else {
      80                 :          5 :                 tprint_sembuf_array(tcp, tcp->u_arg[1], tcp->u_arg[2]);
      81                 :            :         }
      82                 :         10 :         return RVAL_DECODED;
      83                 :            : }
      84                 :            : 
      85                 :         14 : SYS_FUNC(semtimedop)
      86                 :            : {
      87                 :         14 :         tprintf("%d, ", (int) tcp->u_arg[0]);
      88         [ +  + ]:         14 :         if (indirect_ipccall(tcp)) {
      89                 :          7 :                 tprint_sembuf_array(tcp, tcp->u_arg[3], tcp->u_arg[1]);
      90                 :          7 :                 tprints(", ");
      91                 :            : #if defined(S390) || defined(S390X)
      92                 :            :                 print_timespec(tcp, tcp->u_arg[2]);
      93                 :            : #else
      94                 :          7 :                 print_timespec(tcp, tcp->u_arg[4]);
      95                 :            : #endif
      96                 :            :         } else {
      97                 :          7 :                 tprint_sembuf_array(tcp, tcp->u_arg[1], tcp->u_arg[2]);
      98                 :          7 :                 tprints(", ");
      99                 :          7 :                 print_timespec(tcp, tcp->u_arg[3]);
     100                 :            :         }
     101                 :         14 :         return RVAL_DECODED;
     102                 :            : }
     103                 :            : 
     104                 :          4 : SYS_FUNC(semget)
     105                 :            : {
     106                 :          4 :         const int key = (int) tcp->u_arg[0];
     107         [ +  + ]:          4 :         if (key)
     108                 :          2 :                 tprintf("%#x", key);
     109                 :            :         else
     110                 :          2 :                 tprints("IPC_PRIVATE");
     111                 :          4 :         tprintf(", %d, ", (int) tcp->u_arg[1]);
     112         [ +  + ]:          4 :         if (printflags(resource_flags, tcp->u_arg[2] & ~0777, NULL) != 0)
     113                 :          2 :                 tprints("|");
     114                 :          4 :         print_numeric_umode_t(tcp->u_arg[2] & 0777);
     115                 :          4 :         return RVAL_DECODED;
     116                 :            : }
     117                 :            : 
     118                 :         12 : SYS_FUNC(semctl)
     119                 :            : {
     120                 :         12 :         tprintf("%d, %d, ", (int) tcp->u_arg[0], (int) tcp->u_arg[1]);
     121         [ +  + ]:         12 :         PRINTCTL(semctl_flags, tcp->u_arg[2], "SEM_???");
     122                 :         12 :         tprints(", ");
     123         [ +  + ]:         12 :         if (indirect_ipccall(tcp)
     124                 :            : #ifdef SPARC64
     125                 :            :             && current_personality != 0
     126                 :            : #endif
     127                 :            :            ) {
     128                 :          7 :                 printnum_ptr(tcp, tcp->u_arg[3]);
     129                 :            :         } else {
     130                 :          5 :                 printaddr(tcp->u_arg[3]);
     131                 :            :         }
     132                 :         12 :         return RVAL_DECODED;
     133                 :            : }

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