tests/test-uname.c

   1 /* Test of system information.
   2    Copyright (C) 2009-2020 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 }