LCOV - code coverage report
Current view: top level - shishi/gl - xgetdomainname.c (source / functions) Hit Total Coverage
Test: GNU Shishi Lines: 9 17 52.9 %
Date: 2010-05-20 Functions: 1 1 100.0 %
Legend: Lines: hit not hit | Branches: + taken - not taken # not executed Branches: 2 8 25.0 %

           Branch data     Line data    Source code
       1                 :            : /* xgetdomainname.c -- Return the NIS domain name, without size limitations.
       2                 :            :    Copyright (C) 1992, 1996, 2000-2001, 2003-2004, 2006, 2008-2010 Free
       3                 :            :    Software Foundation, Inc.
       4                 :            : 
       5                 :            :    This program is free software: you can redistribute it and/or modify
       6                 :            :    it under the terms of the GNU General Public License as published by
       7                 :            :    the Free Software Foundation; either version 3 of the License, or
       8                 :            :    (at your option) any later version.
       9                 :            : 
      10                 :            :    This program is distributed in the hope that it will be useful,
      11                 :            :    but WITHOUT ANY WARRANTY; without even the implied warranty of
      12                 :            :    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      13                 :            :    GNU General Public License for more details.
      14                 :            : 
      15                 :            :    You should have received a copy of the GNU General Public License
      16                 :            :    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
      17                 :            : 
      18                 :            : /* Based on xgethostname.c, written by Jim Meyering.  */
      19                 :            : 
      20                 :            : #include <config.h>
      21                 :            : 
      22                 :            : /* Specification.  */
      23                 :            : #include "xgetdomainname.h"
      24                 :            : 
      25                 :            : /* Get getdomainname.  */
      26                 :            : #include <unistd.h>
      27                 :            : 
      28                 :            : /* Get errno.  */
      29                 :            : #include <errno.h>
      30                 :            : 
      31                 :            : /* Get free.  */
      32                 :            : #include <stdlib.h>
      33                 :            : 
      34                 :            : #include "xalloc.h"
      35                 :            : 
      36                 :            : #ifndef INITIAL_DOMAINNAME_LENGTH
      37                 :            : # define INITIAL_DOMAINNAME_LENGTH 34
      38                 :            : #endif
      39                 :            : 
      40                 :            : /* Return the NIS domain name of the machine, in malloc'd storage.
      41                 :            :    WARNING! The NIS domain name is unrelated to the fully qualified host name
      42                 :            :             of the machine.  It is also unrelated to email addresses.
      43                 :            :    WARNING! The NIS domain name is usually the empty string or "(none)" when
      44                 :            :             not using NIS.
      45                 :            :    If malloc fails, exit.
      46                 :            :    Upon any other failure, set errno and return NULL.  */
      47                 :            : char *
      48                 :          1 : xgetdomainname (void)
      49                 :            : {
      50                 :            :   char *domainname;
      51                 :            :   size_t size;
      52                 :            : 
      53                 :          1 :   size = INITIAL_DOMAINNAME_LENGTH;
      54                 :          1 :   domainname = xmalloc (size);
      55                 :            :   while (1)
      56                 :            :     {
      57                 :          1 :       int k = size - 1;
      58                 :            :       int err;
      59                 :            : 
      60                 :          1 :       errno = 0;
      61                 :          1 :       domainname[k] = '\0';
      62                 :          1 :       err = getdomainname (domainname, size);
      63   [ +  -  -  + ]:          1 :       if (err >= 0 && domainname[k] == '\0')
      64                 :            :         break;
      65 [ #  # ][ #  # ]:          0 :       else if (err < 0 && errno != EINVAL)
      66                 :            :         {
      67                 :          0 :           int saved_errno = errno;
      68                 :          0 :           free (domainname);
      69                 :          0 :           errno = saved_errno;
      70                 :          0 :           return NULL;
      71                 :            :         }
      72                 :          0 :       size *= 2;
      73                 :          0 :       domainname = xrealloc (domainname, size);
      74                 :          0 :     }
      75                 :            : 
      76                 :          1 :   return domainname;
      77                 :            : }

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