1/****************************************************************************
2 * drivers/bch/bchdev_register.c
3 *
4 * Licensed to the Apache Software Foundation (ASF) under one or more
5 * contributor license agreements.  See the NOTICE file distributed with
6 * this work for additional information regarding copyright ownership.  The
7 * ASF licenses this file to you under the Apache License, Version 2.0 (the
8 * "License"); you may not use this file except in compliance with the
9 * License.  You may obtain a copy of the License at
10 *
11 *   http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
15 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
16 * License for the specific language governing permissions and limitations
17 * under the License.
18 *
19 ****************************************************************************/
20
21/****************************************************************************
22 * Included Files
23 ****************************************************************************/
24#include <stdbool.h>
25#include <errno.h>
26#include <assert.h>
27#include "bch.h"
28
29/****************************************************************************
30 * Public Functions
31 ****************************************************************************/
32
33/****************************************************************************
34 * Name: bchdev_register
35 *
36 * Description:
37 *   Setup so that it exports the block driver referenced by 'blkdev' as a
38 *   character device 'chardev'
39 *
40 ****************************************************************************/
41
42int bchdev_register(const char *blkdev, const char *chardev,
43                    bool readonly)
44{
45  void *handle;
46  int ret;
47
48  /* Setup the BCH lib functions */
49
50  ret = bchlib_setup(blkdev, readonly, &handle);
51  if (ret < 0)
52    {
53      PRINTK("ERROR: bchlib_setup failed: %d\n", -ret);
54      return ret;
55    }
56
57  /* Then setup the character device */
58
59  ret = register_driver(chardev, &bch_fops, 0666, handle);
60  if (ret < 0)
61    {
62      PRINTK("ERROR: register_driver failed: %d\n", -ret);
63      (void)bchlib_teardown(handle);
64      handle = NULL;
65    }
66
67  return ret;
68}
69