Back to index

glibc  2.9
tst-getlogin.c
Go to the documentation of this file.
00001 /* Copyright (C) 1999 Free Software Foundation, Inc.
00002    This file is part of the GNU C Library.
00003 
00004    The GNU C Library is free software; you can redistribute it and/or
00005    modify it under the terms of the GNU Lesser General Public
00006    License as published by the Free Software Foundation; either
00007    version 2.1 of the License, or (at your option) any later version.
00008 
00009    The GNU C Library is distributed in the hope that it will be useful,
00010    but WITHOUT ANY WARRANTY; without even the implied warranty of
00011    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012    Lesser General Public License for more details.
00013 
00014    You should have received a copy of the GNU Lesser General Public
00015    License along with the GNU C Library; if not, write to the Free
00016    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00017    02111-1307 USA.  */
00018 
00019 #include <unistd.h>
00020 #include <stdio.h>
00021 #include <string.h>
00022 
00023 int
00024 main (void)
00025 {
00026   char *login;
00027   int errors = 0;
00028 
00029   login = getlogin ();
00030   if (login == NULL)
00031     puts ("getlogin returned NULL, no further tests");
00032   else
00033     {
00034       char name[1024];
00035       int ret;
00036 
00037       printf ("getlogin returned: `%s'\n", login);
00038 
00039       ret = getlogin_r (name, sizeof (name));
00040       if (ret == 0)
00041        {
00042          printf ("getlogin_r returned: `%s'\n", name);
00043          if (strcmp (name, login) != 0)
00044            {
00045              puts ("Error: getlogin and getlogin_r returned different names");
00046              ++errors;
00047            }
00048        }
00049       else
00050        {
00051          printf ("Error: getlogin_r returned: %d (%s)\n",
00052                 ret, strerror (ret));
00053          ++errors;
00054        }
00055     }
00056 
00057   return errors != 0;
00058 }