diff options
Diffstat (limited to 'nuttx/fs/fs_write.c')
| -rw-r--r-- | nuttx/fs/fs_write.c | 188 |
1 files changed, 0 insertions, 188 deletions
diff --git a/nuttx/fs/fs_write.c b/nuttx/fs/fs_write.c deleted file mode 100644 index 93dad92c4..000000000 --- a/nuttx/fs/fs_write.c +++ /dev/null @@ -1,188 +0,0 @@ -/**************************************************************************** - * fs/fs_write.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 <unistd.h> -#include <fcntl.h> -#include <sched.h> -#include <errno.h> - -#if defined(CONFIG_NET) && CONFIG_NSOCKET_DESCRIPTORS > 0 -# include <sys/socket.h> -#endif - -#include "fs_internal.h" - -/**************************************************************************** - * Private Functions - ****************************************************************************/ - -#if CONFIG_NFILE_DESCRIPTORS > 0 -static inline ssize_t file_write(int fd, FAR const void *buf, size_t nbytes) -{ - FAR struct filelist *list; - FAR struct file *this_file; - FAR struct inode *inode; - int ret; - int err; - - /* Get the thread-specific file list */ - - list = sched_getfiles(); - if (!list) - { - err = EMFILE; - goto errout; - } - - /* Was this file opened for write access? */ - - this_file = &list->fl_files[fd]; - if ((this_file->f_oflags & O_WROK) == 0) - { - err = EBADF; - goto errout; - } - - /* Is a driver registered? Does it support the write method? */ - - inode = this_file->f_inode; - if (!inode || !inode->u.i_ops || !inode->u.i_ops->write) - { - err = EBADF; - goto errout; - } - - /* Yes, then let the driver perform the write */ - - ret = inode->u.i_ops->write(this_file, buf, nbytes); - if (ret < 0) - { - err = -ret; - goto errout; - } - - return ret; - -errout: - set_errno(err); - return ERROR; -} -#endif - -/**************************************************************************** - * Public Functions - ****************************************************************************/ - -/*************************************************************************** - * Name: write - * - * Description: - * write() writes up to nytes bytes to the file referenced by the file - * descriptor fd from the buffer starting at buf. - * - * Parameters: - * fd file descriptor (or socket descriptor) to write to - * buf Data to write - * nbytes Length of data to write - * - * Returned Value: - * On success, the number of bytes written are returned (zero indicates - * nothing was written). On error, -1 is returned, and errno is set appro- - * priately: - * - * EAGAIN - * Non-blocking I/O has been selected using O_NONBLOCK and the write - * would block. - * EBADF - * fd is not a valid file descriptor or is not open for writing. - * EFAULT - * buf is outside your accessible address space. - * EFBIG - * An attempt was made to write a file that exceeds the implementation - * defined maximum file size or the process' file size limit, or - * to write at a position past the maximum allowed offset. - * EINTR - * The call was interrupted by a signal before any data was written. - * EINVAL - * fd is attached to an object which is unsuitable for writing; or - * the file was opened with the O_DIRECT flag, and either the address - * specified in buf, the value specified in count, or the current - * file offset is not suitably aligned. - * EIO - * A low-level I/O error occurred while modifying the inode. - * ENOSPC - * The device containing the file referred to by fd has no room for - * the data. - * EPIPE - * fd is connected to a pipe or socket whose reading end is closed. - * When this happens the writing process will also receive a SIGPIPE - * signal. (Thus, the write return value is seen only if the program - * catches, blocks or ignores this signal.) - * - * Assumptions: - * - ********************************************************************************************/ - -ssize_t write(int fd, FAR const void *buf, size_t nbytes) -{ - /* Did we get a valid file descriptor? */ - -#if CONFIG_NFILE_DESCRIPTORS > 0 - if ((unsigned int)fd >= CONFIG_NFILE_DESCRIPTORS) -#endif - { - /* Write to a socket descriptor is equivalent to send with flags == 0 */ - -#if defined(CONFIG_NET_TCP) && CONFIG_NSOCKET_DESCRIPTORS > 0 - return send(fd, buf, nbytes, 0); -#else - set_errno(EBADF); - return ERROR; -#endif - } - - /* The descriptor is in the right range to be a file descriptor... write to the file */ - -#if CONFIG_NFILE_DESCRIPTORS > 0 - return file_write(fd, buf, nbytes); -#endif -} - |