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

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• Hash : a3fd683d
  Author :
  Date : 2017-01-01T02:59:23
  

  version-etc: new year
  
  * build-aux/gendocs.sh (version):
  * doc/gendocs_template:
  * doc/gendocs_template_min:
  * doc/gnulib.texi:
  * lib/version-etc.c (COPYRIGHT_YEAR):
  Update copyright dates by hand in templates and the like.
  * all files: Run 'make update-copyright'.
  

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• tests/test-fsync.c

• /* Test of fsync() function.
     Copyright (C) 2008-2017 Free Software Foundation, Inc.
  
     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 <http://www.gnu.org/licenses/>.  */
  
  #include <config.h>
  
  #include <unistd.h>
  
  #include "signature.h"
  SIGNATURE_CHECK (fsync, int, (int));
  
  #include <errno.h>
  #include <fcntl.h>
  
  #include "macros.h"
  
  int
  main (void)
  {
    int fd;
    const char *file = "test-fsync.txt";
  
    /* Assuming stdin and stdout are ttys, fsync is allowed to fail, but
       may succeed as an extension.  */
    for (fd = 0; fd < 2; fd++)
      if (fsync (fd) != 0)
        {
          ASSERT (errno == EINVAL /* POSIX */
                  || errno == ENOTSUP /* seen on Mac OS X 10.5 */
                  || errno == EBADF /* seen on AIX 7.1 */
                  || errno == EIO /* seen on mingw */
                  );
        }
  
    /* fsync must fail on invalid fd.  */
    {
      errno = 0;
      ASSERT (fsync (-1) == -1);
      ASSERT (errno == EBADF);
    }
    {
      close (99);
      errno = 0;
      ASSERT (fsync (99) == -1);
      ASSERT (errno == EBADF);
    }
  
    fd = open (file, O_WRONLY|O_CREAT|O_TRUNC, 0644);
    ASSERT (0 <= fd);
    ASSERT (write (fd, "hello", 5) == 5);
    ASSERT (fsync (fd) == 0);
    ASSERT (close (fd) == 0);
  
    /* For a read-only regular file input file descriptor, fsync should
       succeed (since at least atime changes can be synchronized).  */
    fd = open (file, O_RDONLY);
    ASSERT (0 <= fd);
    {
      char buf[1];
      ASSERT (read (fd, buf, sizeof buf) == sizeof buf);
    }
    ASSERT (fsync (fd) == 0);
    ASSERT (close (fd) == 0);
  
    ASSERT (unlink (file) == 0);
  
    return 0;
  }
  

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