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- /****************************************************************************
- * fs/driver/fs_registermtddriver.c
- *
- * Copyright (C) 2018 Gregory Nutt. All rights reserved.
- * Author: Gregory Nutt <gnutt@nuttx.org>
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. 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.
- * 3. Neither the name NuttX 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 THE COPYRIGHT HOLDERS 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 THE
- * COPYRIGHT OWNER 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.
- *
- ****************************************************************************/
- /****************************************************************************
- * Included Files
- ****************************************************************************/
- #include <nuttx/config.h>
- #include <sys/types.h>
- #include <errno.h>
- #include <nuttx/fs/fs.h>
- #include <nuttx/mtd/mtd.h>
- #include "inode/inode.h"
- #if defined(CONFIG_MTD) && !defined(CONFIG_DISABLE_MOUNTPOINT)
- /****************************************************************************
- * Public Functions
- ****************************************************************************/
- /****************************************************************************
- * Name: register_mtddriver
- *
- * Description:
- * Register an MTD driver inode the pseudo file system.
- *
- * Input Parameters:
- * path - The path to the inode to create
- * mtd - The MTD driver structure
- * mode - inode privileges (not used)
- * priv - Private, user data that will be associated with the inode.
- *
- * Returned Value:
- * Zero on success (with the inode point in 'inode'); A negated errno
- * value is returned on a failure (all error values returned by
- * inode_reserve):
- *
- * EINVAL - 'path' is invalid for this operation
- * EEXIST - An inode already exists at 'path'
- * ENOMEM - Failed to allocate in-memory resources for the operation
- *
- ****************************************************************************/
- int register_mtddriver(FAR const char *path, FAR struct mtd_dev_s *mtd,
- mode_t mode, FAR void *priv)
- {
- FAR struct inode *node;
- int ret;
- /* Insert an inode for the device driver -- we need to hold the inode
- * semaphore to prevent access to the tree while we this. This is because
- * we will have a momentarily bad true until we populate the inode with
- * valid data.
- */
- inode_semtake();
- ret = inode_reserve(path, &node);
- if (ret >= 0)
- {
- /* We have it, now populate it with block driver specific information.
- * NOTE that the initial reference count on the new inode is zero.
- */
- INODE_SET_MTD(node);
- node->u.i_mtd = mtd;
- #ifdef CONFIG_FILE_MODE
- node->i_mode = mode;
- #endif
- node->i_private = priv;
- ret = OK;
- }
- inode_semgive();
- return ret;
- }
- #endif /* CONFIG_MTD && !CONFIG_DISABLE_MOUNTPOINT */
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