diff options
Diffstat (limited to 'nuttx/fs/fs_open.c')
| -rw-r--r-- | nuttx/fs/fs_open.c | 206 |
1 files changed, 0 insertions, 206 deletions
diff --git a/nuttx/fs/fs_open.c b/nuttx/fs/fs_open.c deleted file mode 100644 index 5b318b702..000000000 --- a/nuttx/fs/fs_open.c +++ /dev/null @@ -1,206 +0,0 @@ -/**************************************************************************** - * fs_open.c - * - * Copyright (C) 2007-2009, 2011-2012 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 <fcntl.h> -#include <sched.h> -#include <errno.h> -#ifdef CONFIG_FILE_MODE -#include <stdarg.h> -#endif -#include <nuttx/fs/fs.h> -#include "fs_internal.h" - -/**************************************************************************** - * Private Functions - ****************************************************************************/ - -/**************************************************************************** - * Public Functions - ****************************************************************************/ - -/**************************************************************************** - * Name: inode_checkflags - * - * Description: - * Check if the access described by 'oflags' is supported on 'inode' - * - ****************************************************************************/ - -int inode_checkflags(FAR struct inode *inode, int oflags) -{ - if (((oflags & O_RDOK) != 0 && !inode->u.i_ops->read) || - ((oflags & O_WROK) != 0 && !inode->u.i_ops->write)) - { - return -EACCES; - } - else - { - return OK; - } -} - -/**************************************************************************** - * Name: open - * - * Description: - * Standard 'open' interface - * - ****************************************************************************/ - -int open(const char *path, int oflags, ...) -{ - FAR struct filelist *list; - FAR struct inode *inode; - FAR const char *relpath = NULL; -#if defined(CONFIG_FILE_MODE) || !defined(CONFIG_DISABLE_MOUNTPOINT) - mode_t mode = 0666; -#endif - int ret; - int fd; - - /* Get the thread-specific file list */ - - list = sched_getfiles(); - if (!list) - { - ret = EMFILE; - goto errout; - } - -#ifdef CONFIG_FILE_MODE -# ifdef CONFIG_CPP_HAVE_WARNING -# warning "File creation not implemented" -# endif - - /* If the file is opened for creation, then get the mode bits */ - - if (oflags & (O_WRONLY|O_CREAT) != 0) - { - va_list ap; - va_start(ap, oflags); - mode = va_arg(ap, mode_t); - va_end(ap); - } -#endif - - /* Get an inode for this file */ - - inode = inode_find(path, &relpath); - if (!inode) - { - /* "O_CREAT is not set and the named file does not exist. Or, a - * directory component in pathname does not exist or is a dangling - * symbolic link." - */ - - ret = ENOENT; - goto errout; - } - - /* Verify that the inode is valid and either a "normal" or a mountpoint. We - * specifically exclude block drivers. - */ - -#ifndef CONFIG_DISABLE_MOUNTPOINT - if ((!INODE_IS_DRIVER(inode) && !INODE_IS_MOUNTPT(inode)) || !inode->u.i_ops) -#else - if (!INODE_IS_DRIVER(inode) || !inode->u.i_ops) -#endif - { - ret = ENXIO; - goto errout_with_inode; - } - - /* Make sure that the inode supports the requested access */ - - ret = inode_checkflags(inode, oflags); - if (ret < 0) - { - ret = -ret; - goto errout_with_inode; - } - - /* Associate the inode with a file structure */ - - fd = files_allocate(inode, oflags, 0, 0); - if (fd < 0) - { - ret = EMFILE; - goto errout_with_inode; - } - - /* Perform the driver open operation. NOTE that the open method may be - * called many times. The driver/mountpoint logic should handled this - * because it may also be closed that many times. - */ - - ret = OK; - if (inode->u.i_ops->open) - { -#ifndef CONFIG_DISABLE_MOUNTPOINT - if (INODE_IS_MOUNTPT(inode)) - { - ret = inode->u.i_mops->open((FAR struct file*)&list->fl_files[fd], - relpath, oflags, mode); - } - else -#endif - { - ret = inode->u.i_ops->open((FAR struct file*)&list->fl_files[fd]); - } - } - - if (ret < 0) - { - ret = -ret; - goto errout_with_fd; - } - - return fd; - - errout_with_fd: - files_release(fd); - errout_with_inode: - inode_release(inode); - errout: - set_errno(ret); - return ERROR; -} |