LCOV - code coverage report
Current view: top level - strace - nsfs.c (source / functions) Hit Total Coverage
Test: strace-4.18.0.129.97bbb Code Coverage Lines: 7 14 50.0 %
Date: 2017-07-31 03:46:08 Functions: 1 1 100.0 %
Legend: Lines: hit not hit | Branches: + taken - not taken # not executed Branches: 9 14 64.3 %

           Branch data     Line data    Source code
       1                 :            : /*
       2                 :            :  * Support for decoding of NS_* ioctl commands.
       3                 :            :  *
       4                 :            :  * Copyright (c) 2017 Nikolay Marchuk <marchuk.nikolay.a@gmail.com>
       5                 :            :  * All rights reserved.
       6                 :            :  *
       7                 :            :  * Redistribution and use in source and binary forms, with or without
       8                 :            :  * modification, are permitted provided that the following conditions
       9                 :            :  * are met:
      10                 :            :  * 1. Redistributions of source code must retain the above copyright
      11                 :            :  *    notice, this list of conditions and the following disclaimer.
      12                 :            :  * 2. Redistributions in binary form must reproduce the above copyright
      13                 :            :  *    notice, this list of conditions and the following disclaimer in the
      14                 :            :  *    documentation and/or other materials provided with the distribution.
      15                 :            :  * 3. The name of the author may not be used to endorse or promote products
      16                 :            :  *    derived from this software without specific prior written permission.
      17                 :            :  *
      18                 :            :  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
      19                 :            :  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
      20                 :            :  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
      21                 :            :  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
      22                 :            :  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
      23                 :            :  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
      24                 :            :  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
      25                 :            :  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
      26                 :            :  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
      27                 :            :  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
      28                 :            :  */
      29                 :            : 
      30                 :            : #include "defs.h"
      31                 :            : #include "nsfs.h"
      32                 :            : 
      33                 :            : int
      34                 :         24 : nsfs_ioctl(struct tcb *tcp, unsigned int code, kernel_ulong_t arg)
      35                 :            : {
      36                 :            :         unsigned int uid;
      37   [ +  +  -  + ]:         24 :         switch (code) {
      38                 :            :         case NS_GET_USERNS:
      39                 :            :         case NS_GET_PARENT:
      40                 :            :                 return 1 + RVAL_FD + RVAL_DECODED;
      41                 :            :         case NS_GET_NSTYPE:
      42         [ +  + ]:          8 :                 if (entering(tcp))
      43                 :            :                         return 0;
      44         [ -  + ]:          4 :                 if (!syserror(tcp)) {
      45                 :            :                         const char *outstr;
      46                 :          0 :                         outstr = xlookup(setns_types, tcp->u_rval);
      47         [ #  # ]:          0 :                         if (outstr) {
      48                 :          0 :                                 tcp->auxstr = outstr;
      49                 :          0 :                                 return 1 + RVAL_STR;
      50                 :            :                         }
      51                 :            :                 }
      52                 :            :                 return 1;
      53                 :            :         case NS_GET_OWNER_UID:
      54         [ +  + ]:          8 :                 if (entering(tcp))
      55                 :            :                         return 0;
      56                 :          4 :                 tprints(", ");
      57         [ -  + ]:          4 :                 if (!umove_or_printaddr(tcp, arg, &uid)) {
      58                 :          0 :                         printuid("[", uid);
      59                 :          0 :                         tprints("]");
      60                 :            :                 }
      61                 :            :                 return 1;
      62                 :            :         default:
      63                 :          0 :                 return RVAL_DECODED;
      64                 :            :         }
      65                 :            : }

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