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- /****************************************************************************
- * fs/nxffs/nxffs_ioctl.c
- *
- * Copyright (C) 2011, 2013, 2017-2018 Gregory Nutt. All rights reserved.
- * Author: Gregory Nutt <gnutt@nuttx.org>
- *
- * References: Linux/Documentation/filesystems/romfs.txt
- *
- * 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 <string.h>
- #include <assert.h>
- #include <errno.h>
- #include <debug.h>
- #include <nuttx/fs/fs.h>
- #include <nuttx/fs/ioctl.h>
- #include <nuttx/mtd/mtd.h>
- #include "nxffs.h"
- /****************************************************************************
- * Public Functions
- ****************************************************************************/
- /****************************************************************************
- * Name: nxffs_ioctl
- *
- * Description:
- * Standard mountpoint ioctl method.
- *
- ****************************************************************************/
- int nxffs_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
- {
- FAR struct nxffs_volume_s *volume;
- int ret;
- finfo("cmd: %d arg: %08lx\n", cmd, arg);
- /* Sanity checks */
- DEBUGASSERT(filep->f_priv != NULL && filep->f_inode != NULL);
- /* Recover the file system state from the open file */
- volume = filep->f_inode->i_private;
- DEBUGASSERT(volume != NULL);
- /* Get exclusive access to the volume. Note that the volume exclsem
- * protects the open file list.
- */
- ret = nxsem_wait(&volume->exclsem);
- if (ret < 0)
- {
- ferr("ERROR: nxsem_wait failed: %d\n", ret);
- goto errout;
- }
- /* Only a reformat and optimize commands are supported */
- if (cmd == FIOC_REFORMAT)
- {
- finfo("Reformat command\n");
- /* We cannot reformat the volume if there are any open inodes */
- if (volume->ofiles)
- {
- ferr("ERROR: Open files\n");
- ret = -EBUSY;
- goto errout_with_semaphore;
- }
- /* Re-format the volume -- all is lost */
- ret = nxffs_reformat(volume);
- }
- else if (cmd == FIOC_OPTIMIZE)
- {
- finfo("Optimize command\n");
- /* Pack the volume */
- ret = nxffs_pack(volume);
- }
- else
- {
- /* Command not recognized, forward to the MTD driver */
- ret = MTD_IOCTL(volume->mtd, cmd, arg);
- }
- errout_with_semaphore:
- nxsem_post(&volume->exclsem);
- errout:
- return ret;
- }
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