text: /* nbdkit
   * Copyright (C) 2017-2020 Red Hat Inc.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions are
   * met:
   *
   * * Redistributions of source code must retain the above copyright
   * notice, this list of conditions and the following disclaimer.
   *
   * * Redistributions in binary form must reproduce the above copyright
   * notice, this list of conditions and the following disclaimer in the
   * documentation and/or other materials provided with the distribution.
   *
   * * Neither the name of Red Hat nor the names of its contributors may be
   * used to endorse or promote products derived from this software without
   * specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND
   * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
   * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
   * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR
   * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
   * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
   * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   */
  
  #include <config.h>
  
  #include <stdio.h>
  #include <stdlib.h>
  #include <stdint.h>
  #include <inttypes.h>
  #include <string.h>
  #include <unistd.h>
  
  #include <guestfs.h>
  
  #include "test.h"
  
  int
  main (int argc, char *argv[])
  {
    guestfs_h *g;
    int r;
    char *data;
  
    if (test_start_nbdkit ("-D", "memory.dir=1",
                           "memory", "100M",
                           "allocator=" ALLOCATOR, NULL) == -1)
      exit (EXIT_FAILURE);
  
    g = guestfs_create ();
    if (g == NULL) {
      perror ("guestfs_create");
      exit (EXIT_FAILURE);
    }
  
    r = guestfs_add_drive_opts (g, "",
                                GUESTFS_ADD_DRIVE_OPTS_FORMAT, "raw",
                                GUESTFS_ADD_DRIVE_OPTS_PROTOCOL, "nbd",
                                GUESTFS_ADD_DRIVE_OPTS_SERVER, server,
                                -1);
    if (r == -1)
      exit (EXIT_FAILURE);
  
    if (guestfs_launch (g) == -1)
      exit (EXIT_FAILURE);
  
    if (guestfs_part_disk (g, "/dev/sda", "mbr") == -1)
      exit (EXIT_FAILURE);
    if (guestfs_mkfs (g, "ext4", "/dev/sda1") == -1)
      exit (EXIT_FAILURE);
  
    if (guestfs_mount_options (g, "discard", "/dev/sda1", "/") == -1)
      exit (EXIT_FAILURE);
  
  #define filename "/hello.txt"
  #define content "hello, people of the world"
  
    if (guestfs_write (g, filename, content, strlen (content)) == -1)
      exit (EXIT_FAILURE);
  
    /* Force write through to and read back from disk. */
    if (guestfs_sync (g) == -1 || guestfs_drop_caches (g, 3) == -1)
      exit (EXIT_FAILURE);
  
    data = guestfs_cat (g, filename);
    if (!data)
      exit (EXIT_FAILURE);
  
    if (strcmp (data, content) != 0) {
      fprintf (stderr,
               "%s FAILED: unexpected content of %s file "
               "(actual: %s, expected: %s)\n",
               program_name, filename, data, content);
      exit (EXIT_FAILURE);
    }
  
  #ifdef GUESTFS_HAVE_FSTRIM
    /* Delete the file and fstrim to test zeroing/trimming. */
    if (guestfs_rm (g, filename) == -1)
      exit (EXIT_FAILURE);
  
    if (guestfs_fstrim (g, "/", -1) == -1)
      exit (EXIT_FAILURE);
  #endif
  
    if (guestfs_shutdown (g) == -1)
      exit (EXIT_FAILURE);
  
    guestfs_close (g);
    exit (EXIT_SUCCESS);
  }
  