px4-firmware/nuttx/fs/fs_mkdir.c

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/****************************************************************************
* fs/fs_mkdir.c
*
* Copyright (C) 2007, 2008 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 <sys/stat.h>
#include <errno.h>
#include <nuttx/fs/fs.h>
#include "fs_internal.h"
/****************************************************************************
* Definitions
****************************************************************************/
/****************************************************************************
* Private Variables
****************************************************************************/
/****************************************************************************
* Public Variables
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: mkdir
*
* Description: Create a directory
*
****************************************************************************/
int mkdir(const char *pathname, mode_t mode)
{
FAR struct inode *inode;
const char *relpath = NULL;
int ret;
/* Get an inode for this file */
inode = inode_find(pathname, &relpath);
if (!inode)
{
/* There is no mountpoint that includes in this path */
ret = ENOENT;
goto errout;
}
/* Verify that the inode is a valid mountpoint. */
if (!INODE_IS_MOUNTPT(inode) || !inode->u.i_mops)
{
ret = ENXIO;
goto errout_with_inode;
}
/* Perform the mkdir operation using the relative path
* at the mountpoint.
*/
if (inode->u.i_mops->mkdir)
{
ret = inode->u.i_mops->mkdir(inode, relpath, mode);
if (ret < 0)
{
ret = -ret;
goto errout_with_inode;
}
}
else
{
ret = ENOSYS;
goto errout_with_inode;
}
/* Directory successfully created */
inode_release(inode);
return OK;
errout_with_inode:
inode_release(inode);
errout:
set_errno(ret);
return ERROR;
}