1  /* Test of system information.
       2     Copyright (C) 2009-2023 Free Software Foundation, Inc.
       3  
       4     This program is free software: you can redistribute it and/or modify
       5     it under the terms of the GNU General Public License as published by
       6     the Free Software Foundation, either version 3 of the License, or
       7     (at your option) any later version.
       8  
       9     This program is distributed in the hope that it will be useful,
      10     but WITHOUT ANY WARRANTY; without even the implied warranty of
      11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      12     GNU General Public License for more details.
      13  
      14     You should have received a copy of the GNU General Public License
      15     along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
      16  
      17  /* Written by Bruno Haible <bruno@clisp.org>, 2009.  */
      18  
      19  #include <config.h>
      20  
      21  #include <sys/utsname.h>
      22  
      23  #include "signature.h"
      24  SIGNATURE_CHECK (uname, int, (struct utsname *));
      25  
      26  #include <stdio.h>
      27  #include <string.h>
      28  
      29  #include "macros.h"
      30  
      31  
      32  /* This program can be called with no arguments, then it performs a unit
      33     test.  Or it can be called with 1 argument, then it prints the uname
      34     contents to standard output.  */
      35  
      36  int
      37  main (int argc, char *argv[])
      38  {
      39    struct utsname buf;
      40  
      41    memset (&buf, '?', sizeof (buf));
      42  
      43    ASSERT (uname (&buf) >= 0);
      44  
      45    /* Verify that every field's value is NUL terminated.  */
      46    ASSERT (strlen (buf.sysname) < sizeof (buf.sysname));
      47    ASSERT (strlen (buf.nodename) < sizeof (buf.nodename));
      48    ASSERT (strlen (buf.release) < sizeof (buf.release));
      49    ASSERT (strlen (buf.version) < sizeof (buf.version));
      50    ASSERT (strlen (buf.machine) < sizeof (buf.machine));
      51  
      52    if (argc > 1)
      53      {
      54        /* Show the result.  */
      55  
      56        printf ("uname -n = nodename       = %s\n", buf.nodename);
      57        printf ("uname -s = sysname        = %s\n", buf.sysname);
      58        printf ("uname -r = release        = %s\n", buf.release);
      59        printf ("uname -v = version        = %s\n", buf.version);
      60        printf ("uname -m = machine or cpu = %s\n", buf.machine);
      61      }
      62  
      63    return 0;
      64  }