kc3-lang/gnulib/tests/test-gethostname.c

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• Hash : 32a72f45
  Author :
  Date : 2023-01-01T01:14:21
  

  maint: run 'make update-copyright'
  

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• tests/test-gethostname.c

• /*
   * Copyright (C) 2008-2023 Free Software Foundation, Inc.
   * Written by Simon Josefsson.
   *
   * This program is free software: you can redistribute it and/or modify
   * it under the terms of the GNU General Public License as published by
   * the Free Software Foundation, either version 3 of the License, or
   * (at your option) any later version.
   *
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   *
   * You should have received a copy of the GNU General Public License
   * along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  
  #include <config.h>
  
  /* Get gethostname() declaration.  */
  #include <unistd.h>
  
  #include "signature.h"
  SIGNATURE_CHECK (gethostname, int, (char *, size_t));
  
  /* Get HOST_NAME_MAX definition.  */
  #include <limits.h>
  
  #include <stdio.h>
  #include <string.h>
  #include <errno.h>
  
  #define NOHOSTNAME "magic-gnulib-test-string"
  
  int
  main (int argc, _GL_UNUSED char *argv[])
  {
    char buf[HOST_NAME_MAX];
    int rc;
  
    if (strlen (NOHOSTNAME) >= HOST_NAME_MAX)
      {
        printf ("HOST_NAME_MAX impossibly small?! %d\n", HOST_NAME_MAX);
        return 2;
      }
  
    strcpy (buf, NOHOSTNAME);
  
    rc = gethostname (buf, sizeof (buf));
  
    if (rc != 0)
      {
        printf ("gethostname failed, rc %d errno %d\n", rc, errno);
        return 1;
      }
  
    if (strcmp (buf, NOHOSTNAME) == 0)
      {
        printf ("gethostname left buffer untouched.\n");
        return 1;
      }
  
    if (argc > 1)
      printf ("hostname: %s\n", buf);
  
    return 0;
  }
  

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