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author | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2007-05-09 00:04:03 +0000 |
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committer | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2007-05-09 00:04:03 +0000 |
commit | 039a51bde4bc3f21fe68c3f4cff966fde2532faa (patch) | |
tree | ec9942ae9a79d9a6b7315fd02f8b14d27ce95a27 /nuttx/fs/fs_registerdriver.c | |
parent | 0350e28418647956e6fecc5f6a096fb435cf47f4 (diff) | |
download | px4-nuttx-039a51bde4bc3f21fe68c3f4cff966fde2532faa.tar.gz px4-nuttx-039a51bde4bc3f21fe68c3f4cff966fde2532faa.tar.bz2 px4-nuttx-039a51bde4bc3f21fe68c3f4cff966fde2532faa.zip |
Add support for block drivers
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@206 42af7a65-404d-4744-a932-0658087f49c3
Diffstat (limited to 'nuttx/fs/fs_registerdriver.c')
-rw-r--r-- | nuttx/fs/fs_registerdriver.c | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/nuttx/fs/fs_registerdriver.c b/nuttx/fs/fs_registerdriver.c new file mode 100644 index 000000000..c92a05216 --- /dev/null +++ b/nuttx/fs/fs_registerdriver.c @@ -0,0 +1,101 @@ +/************************************************************ + * fs_registerdriver.c + * + * Copyright (C) 2007 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * 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 Gregory Nutt 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.h> +#include "fs_internal.h" + +/************************************************************ + * Definitions + ************************************************************/ + +/************************************************************ + * Private Variables + ************************************************************/ + +/************************************************************ + * Public Variables + ************************************************************/ + +/************************************************************ + * Private Functions + ************************************************************/ + +/************************************************************ + * Public Functions + ************************************************************/ + +/************************************************************ + * Name: register_driver + ************************************************************/ + +STATUS register_driver(const char *path, + const struct file_operations *fops, + mode_t mode, void *private) +{ + struct inode *node; + STATUS ret = ERROR; + + /* Insert a dummy node -- we need to hold the inode semaphore + * to do this because we will have a momentarily bad structure. + */ + + inode_semtake(); + node = inode_reserve(path); + if (node != NULL) + { + /* 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 = private; + ret = OK; + } + + inode_semgive(); + return ret; +} |