diff options
Diffstat (limited to 'nuttx/fs/fs_ioctl.c')
-rw-r--r-- | nuttx/fs/fs_ioctl.c | 150 |
1 files changed, 150 insertions, 0 deletions
diff --git a/nuttx/fs/fs_ioctl.c b/nuttx/fs/fs_ioctl.c new file mode 100644 index 000000000..3440bc0d0 --- /dev/null +++ b/nuttx/fs/fs_ioctl.c @@ -0,0 +1,150 @@ +/**************************************************************************** + * fs/fs_ioctl.c + * + * Copyright (C) 2007-2010, 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/ioctl.h> +#include <sched.h> +#include <errno.h> + +#include <net/if.h> + +#if defined(CONFIG_NET) && CONFIG_NSOCKET_DESCRIPTORS > 0 +# include <nuttx/net/net.h> +#endif + +#include "fs_internal.h" + +/**************************************************************************** + * Global Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: ioctl + * + * Description: + * Perform device specific operations. + * + * Parameters: + * fd File/socket descriptor of device + * req The ioctl command + * arg The argument of the ioctl cmd + * + * Return: + * >=0 on success (positive non-zero values are cmd-specific) + * -1 on failure withi errno set properly: + * + * EBADF + * 'fd' is not a valid descriptor. + * EFAULT + * 'arg' references an inaccessible memory area. + * EINVAL + * 'cmd' or 'arg' is not valid. + * ENOTTY + * 'fd' is not associated with a character special device. + * ENOTTY + * The specified request does not apply to the kind of object that the + * descriptor 'fd' references. + * + ****************************************************************************/ + +int ioctl(int fd, int req, unsigned long arg) +{ + int err; +#if CONFIG_NFILE_DESCRIPTORS > 0 + FAR struct filelist *list; + FAR struct file *this_file; + FAR struct inode *inode; + int ret = OK; + + /* Did we get a valid file descriptor? */ + + if ((unsigned int)fd >= CONFIG_NFILE_DESCRIPTORS) +#endif + { + /* Perform the socket ioctl */ + +#if defined(CONFIG_NET) && CONFIG_NSOCKET_DESCRIPTORS > 0 + if ((unsigned int)fd < (CONFIG_NFILE_DESCRIPTORS+CONFIG_NSOCKET_DESCRIPTORS)) + { + return netdev_ioctl(fd, req, arg); + } + else +#endif + { + err = EBADF; + goto errout; + } + } + +#if CONFIG_NFILE_DESCRIPTORS > 0 + /* Get the thread-specific file list */ + + list = sched_getfiles(); + if (!list) + { + err = EMFILE; + goto errout; + } + + /* Is a driver registered? Does it support the ioctl method? */ + + this_file = &list->fl_files[fd]; + inode = this_file->f_inode; + + if (inode && inode->u.i_ops && inode->u.i_ops->ioctl) + { + /* Yes, then let it perform the ioctl */ + + ret = (int)inode->u.i_ops->ioctl(this_file, req, arg); + if (ret < 0) + { + err = -ret; + goto errout; + } + } + + return ret; +#endif + +errout: + set_errno(err); + return ERROR; +} + |