mirror of
https://github.com/apache/nuttx.git
synced 2026-09-27 18:58:27 +08:00
Move drive from fs/. to fs/driver/.
This commit is contained in:
Gregory Nutt
@@ -0,0 +1,112 @@
|
||||
/****************************************************************************
|
||||
* fs/driver/fs_closeblockdriver.c
|
||||
*
|
||||
* Copyright (C) 2008-2009 Gregory Nutt. All rights reserved.
|
||||
* Author: Gregory Nutt <gnutt@nuttx.org>
|
||||
*
|
||||
* Redistribution and use in pathname and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
*
|
||||
* 1. Redistributions of pathname 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 <debug.h>
|
||||
#include <errno.h>
|
||||
#include <nuttx/fs/fs.h>
|
||||
|
||||
#include "fs.h"
|
||||
|
||||
/****************************************************************************
|
||||
* Private Functions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Public Functions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Name: close_blockdriver
|
||||
*
|
||||
* Description:
|
||||
* Call the close method and release the inode
|
||||
*
|
||||
* Inputs:
|
||||
* inode - reference to the inode of a block driver opened by open_blockdriver
|
||||
*
|
||||
* Return:
|
||||
* Returns zero on success or a negated errno on failure:
|
||||
*
|
||||
* EINVAL - inode is NULL
|
||||
* ENOTBLK - The inode is not a block driver
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
int close_blockdriver(FAR struct inode *inode)
|
||||
{
|
||||
int ret = 0; /* Assume success */
|
||||
|
||||
/* Sanity checks */
|
||||
|
||||
#ifdef CONFIG_DEBUG
|
||||
if (!inode || !inode->u.i_bops)
|
||||
{
|
||||
ret = -EINVAL;
|
||||
goto errout;
|
||||
}
|
||||
#endif
|
||||
|
||||
/* Verify that the inode is a block driver. */
|
||||
|
||||
if (!INODE_IS_BLOCK(inode))
|
||||
{
|
||||
fdbg("inode is not a block driver\n");
|
||||
ret = -ENOTBLK;
|
||||
goto errout;
|
||||
}
|
||||
|
||||
/* Close the block driver. Not that no mutually exclusive access
|
||||
* to the driver is enforced here. That must be done in the driver
|
||||
* if needed.
|
||||
*/
|
||||
|
||||
if (inode->u.i_bops->close)
|
||||
{
|
||||
ret = inode->u.i_bops->close(inode);
|
||||
}
|
||||
|
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/* Then release the reference on the inode */
|
||||
|
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inode_release(inode);
|
||||
|
||||
errout:
|
||||
return ret;
|
||||
}
|
||||
@@ -0,0 +1,131 @@
|
||||
/****************************************************************************
|
||||
* fs/driver/fs_openblockdriver.c
|
||||
*
|
||||
* Copyright (C) 2008 Gregory Nutt. All rights reserved.
|
||||
* Author: Gregory Nutt <gnutt@nuttx.org>
|
||||
*
|
||||
* Redistribution and use in pathname and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
*
|
||||
* 1. Redistributions of pathname 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/mount.h>
|
||||
#include <debug.h>
|
||||
#include <errno.h>
|
||||
#include <nuttx/fs/fs.h>
|
||||
|
||||
#include "fs.h"
|
||||
|
||||
/****************************************************************************
|
||||
* Private Functions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Public Functions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Name: find_blockdriver
|
||||
*
|
||||
* Description:
|
||||
* Return the inode of the block driver specified by 'pathname'
|
||||
*
|
||||
* Inputs:
|
||||
* pathname - the full path to the block driver to be located
|
||||
* mountflags - if MS_RDONLY is not set, then driver must support write
|
||||
* operations (see include/sys/mount.h)
|
||||
* ppinode - address of the location to return the inode reference
|
||||
*
|
||||
* Return:
|
||||
* Returns zero on success or a negated errno on failure:
|
||||
*
|
||||
* EINVAL - pathname or pinode is NULL
|
||||
* ENOENT - No block driver of this name is registered
|
||||
* ENOTBLK - The inode associated with the pathname is not a block driver
|
||||
* EACCESS - The MS_RDONLY option was not set but this driver does not
|
||||
* support write access
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
int find_blockdriver(FAR const char *pathname, int mountflags, FAR struct inode **ppinode)
|
||||
{
|
||||
FAR struct inode *inode;
|
||||
int ret = 0; /* Assume success */
|
||||
|
||||
/* Sanity checks */
|
||||
|
||||
#ifdef CONFIG_DEBUG
|
||||
if (!pathname || !ppinode)
|
||||
{
|
||||
ret = -EINVAL;
|
||||
goto errout;
|
||||
}
|
||||
#endif
|
||||
|
||||
/* Find the inode registered with this pathname */
|
||||
|
||||
inode = inode_find(pathname, NULL);
|
||||
if (!inode)
|
||||
{
|
||||
fdbg("Failed to find %s\n", pathname);
|
||||
ret = -ENOENT;
|
||||
goto errout;
|
||||
}
|
||||
|
||||
/* Verify that the inode is a block driver. */
|
||||
|
||||
if (!INODE_IS_BLOCK(inode))
|
||||
{
|
||||
fdbg("%s is not a block driver\n", pathname);
|
||||
ret = -ENOTBLK;
|
||||
goto errout_with_inode;
|
||||
}
|
||||
|
||||
/* Make sure that the inode supports the requested access */
|
||||
|
||||
if (!inode->u.i_bops || !inode->u.i_bops->read ||
|
||||
(!inode->u.i_bops->write && (mountflags & MS_RDONLY) == 0))
|
||||
{
|
||||
fdbg("%s does not support requested access\n", pathname);
|
||||
ret = -EACCES;
|
||||
goto errout_with_inode;
|
||||
}
|
||||
|
||||
*ppinode = inode;
|
||||
return OK;
|
||||
|
||||
errout_with_inode:
|
||||
inode_release(inode);
|
||||
errout:
|
||||
return ret;
|
||||
}
|
||||
@@ -0,0 +1,128 @@
|
||||
/****************************************************************************
|
||||
* fs/driver/fs_openblockdriver.c
|
||||
*
|
||||
* Copyright (C) 2008-2009 Gregory Nutt. All rights reserved.
|
||||
* Author: Gregory Nutt <gnutt@nuttx.org>
|
||||
*
|
||||
* Redistribution and use in pathname and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
*
|
||||
* 1. Redistributions of pathname 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 <debug.h>
|
||||
#include <errno.h>
|
||||
#include <nuttx/fs/fs.h>
|
||||
|
||||
#include "fs.h"
|
||||
|
||||
/****************************************************************************
|
||||
* Private Functions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Public Functions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Name: open_blockdriver
|
||||
*
|
||||
* Description:
|
||||
* Return the inode of the block driver specified by 'pathname'
|
||||
*
|
||||
* Inputs:
|
||||
* pathname - the full path to the block driver to be opened
|
||||
* mountflags - if MS_RDONLY is not set, then driver must support write
|
||||
* operations (see include/sys/mount.h)
|
||||
* ppinode - address of the location to return the inode reference
|
||||
*
|
||||
* Return:
|
||||
* Returns zero on success or a negated errno on failure:
|
||||
*
|
||||
* EINVAL - pathname or pinode is NULL
|
||||
* ENOENT - No block driver of this name is registered
|
||||
* ENOTBLK - The inode associated with the pathname is not a block driver
|
||||
* EACCESS - The MS_RDONLY option was not set but this driver does not
|
||||
* support write access
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
int open_blockdriver(FAR const char *pathname, int mountflags,
|
||||
FAR struct inode **ppinode)
|
||||
{
|
||||
FAR struct inode *inode;
|
||||
int ret;
|
||||
|
||||
/* Minimal sanity checks */
|
||||
|
||||
#ifdef CONFIG_DEBUG
|
||||
if (!ppinode)
|
||||
{
|
||||
ret = -EINVAL;
|
||||
goto errout;
|
||||
}
|
||||
#endif
|
||||
|
||||
/* Find the inode associated with this block driver name. find_blockdriver
|
||||
* will perform all additional error checking.
|
||||
*/
|
||||
|
||||
ret = find_blockdriver(pathname, mountflags, &inode);
|
||||
if (ret < 0)
|
||||
{
|
||||
fdbg("Failed to file %s block driver\n", pathname);
|
||||
goto errout;
|
||||
}
|
||||
|
||||
/* Open the block driver. Note that no mutually exclusive access
|
||||
* to the driver is enforced here. That must be done in the driver
|
||||
* if needed.
|
||||
*/
|
||||
|
||||
if (inode->u.i_bops->open)
|
||||
{
|
||||
ret = inode->u.i_bops->open(inode);
|
||||
if (ret < 0)
|
||||
{
|
||||
fdbg("%s driver open failed\n", pathname);
|
||||
goto errout_with_inode;
|
||||
}
|
||||
}
|
||||
|
||||
*ppinode = inode;
|
||||
return OK;
|
||||
|
||||
errout_with_inode:
|
||||
inode_release(inode);
|
||||
errout:
|
||||
return ret;
|
||||
}
|
||||
@@ -0,0 +1,124 @@
|
||||
/****************************************************************************
|
||||
* fs/driver/fs_registerblockdriver.c
|
||||
*
|
||||
* Copyright (C) 2007-2009, 2012 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 "fs.h"
|
||||
|
||||
/****************************************************************************
|
||||
* Pre-processor oDefinitions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Private Variables
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Public Variables
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Private Functions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Public Functions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Name: register_blockdriver
|
||||
*
|
||||
* Description:
|
||||
* Register a block driver inode the pseudo file system.
|
||||
*
|
||||
* Input parameters:
|
||||
* path - The path to the inode to create
|
||||
* bops - The block driver operations structure
|
||||
* mode - inmode priviledges (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_blockdriver(FAR const char *path,
|
||||
FAR const struct block_operations *bops,
|
||||
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. */
|
||||
|
||||
INODE_SET_BLOCK(node);
|
||||
|
||||
node->u.i_bops = bops;
|
||||
#ifdef CONFIG_FILE_MODE
|
||||
node->i_mode = mode;
|
||||
#endif
|
||||
node->i_private = priv;
|
||||
ret = OK;
|
||||
}
|
||||
|
||||
inode_semgive();
|
||||
return ret;
|
||||
}
|
||||
|
||||
@@ -0,0 +1,120 @@
|
||||
/****************************************************************************
|
||||
* fs/driver/fs_registerdriver.c
|
||||
*
|
||||
* Copyright (C) 2007-2009, 2012 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 "fs.h"
|
||||
|
||||
/****************************************************************************
|
||||
* Pre-processor Definitions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Private Variables
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Public Variables
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Private Functions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Public Functions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Name: register_driver
|
||||
*
|
||||
* Description:
|
||||
* Register a character driver inode the pseudo file system.
|
||||
*
|
||||
* Input parameters:
|
||||
* path - The path to the inode to create
|
||||
* fops - The file operations structure
|
||||
* mode - inmode priviledges (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_driver(FAR const char *path, FAR const struct file_operations *fops,
|
||||
mode_t mode, FAR void *priv)
|
||||
{
|
||||
FAR struct inode *node;
|
||||
int ret;
|
||||
|
||||
/* Insert a dummy node -- we need to hold the inode semaphore because we
|
||||
* will have a momentarily bad structure.
|
||||
*/
|
||||
|
||||
inode_semtake();
|
||||
ret = inode_reserve(path, &node);
|
||||
if (ret >= 0)
|
||||
{
|
||||
/* We have it, now populate it with driver specific information. */
|
||||
|
||||
INODE_SET_DRIVER(node);
|
||||
|
||||
node->u.i_ops = fops;
|
||||
#ifdef CONFIG_FILE_MODE
|
||||
node->i_mode = mode;
|
||||
#endif
|
||||
node->i_private = priv;
|
||||
ret = OK;
|
||||
}
|
||||
|
||||
inode_semgive();
|
||||
return ret;
|
||||
}
|
||||
@@ -0,0 +1,86 @@
|
||||
/****************************************************************************
|
||||
* fs/driver/fs_unregisterblockdriver.c
|
||||
*
|
||||
* Copyright (C) 2007-2009 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 <nuttx/fs/fs.h>
|
||||
|
||||
#include "fs.h"
|
||||
|
||||
/****************************************************************************
|
||||
* Pre-processor Definitions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Private Types
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Private Variables
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Public Variables
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Private Functions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Public Functions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Name: unregister_blockdriver
|
||||
*
|
||||
* Description:
|
||||
* Remove the block driver inode at 'path' from the pseudo-file system
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
int unregister_blockdriver(const char *path)
|
||||
{
|
||||
int ret;
|
||||
|
||||
inode_semtake();
|
||||
ret = inode_remove(path);
|
||||
inode_semgive();
|
||||
return ret;
|
||||
}
|
||||
@@ -0,0 +1,86 @@
|
||||
/****************************************************************************
|
||||
* fs/driver/fs_unregisterdriver.c
|
||||
*
|
||||
* Copyright (C) 2007-2009, 2012 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 <nuttx/fs/fs.h>
|
||||
|
||||
#include "fs.h"
|
||||
|
||||
/****************************************************************************
|
||||
* Pre-processor Definitions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Private Types
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Private Variables
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Public Variables
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Private Functions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Public Functions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Name: unregister_driver
|
||||
*
|
||||
* Description:
|
||||
* Remove the character driver inode at 'path' from the pseudo-file system
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
int unregister_driver(FAR const char *path)
|
||||
{
|
||||
int ret;
|
||||
|
||||
inode_semtake();
|
||||
ret = inode_remove(path);
|
||||
inode_semgive();
|
||||
return ret;
|
||||
}
|
||||
Reference in New Issue
Block a user