/*
   *   fs/cifs/ioctl.c
   *
   *   vfs operations that deal with io control
   *

   *   Copyright (C) International Business Machines  Corp., 2005,2007

   *   Author(s): Steve French (sfrench@us.ibm.com)
   *
   *   This library is free software; you can redistribute it and/or modify
   *   it under the terms of the GNU Lesser General Public License as published
   *   by the Free Software Foundation; either version 2.1 of the License, or
   *   (at your option) any later version.
   *
   *   This library is distributed in the hope that it will be useful,
   *   but WITHOUT ANY WARRANTY; without even the implied warranty of
   *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
   *   the GNU Lesser General Public License for more details.
   *
   *   You should have received a copy of the GNU Lesser General Public License
   *   along with this library; if not, write to the Free Software
   *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
   */

  #include <linux/fs.h>

  #include "cifspdu.h"
  #include "cifsglob.h"
  #include "cifsproto.h"
  #include "cifs_debug.h"

  #include "cifsfs.h"

  #define CIFS_IOC_CHECKUMOUNT _IO(0xCF, 2)

  long cifs_ioctl(struct file *filep, unsigned int command, unsigned long arg)

  {

  	struct inode *inode = filep->f_dentry->d_inode;

  	int rc = -ENOTTY; /* strange error - but the precedent */

  	int xid;
  	struct cifs_sb_info *cifs_sb;

  #ifdef CONFIG_CIFS_POSIX

  	__u64	ExtAttrBits = 0;
  	__u64	ExtAttrMask = 0;

  	__u64   caps;

  	struct cifsTconInfo *tcon;

  	struct cifsFileInfo *pSMBFile = filep->private_data;

  #endif /* CONFIG_CIFS_POSIX */

  
  	xid = GetXid();

  	cFYI(1, "ioctl file %p  cmd %u  arg %lu", filep, command, arg);

  	cifs_sb = CIFS_SB(inode->i_sb);

  #ifdef CONFIG_CIFS_POSIX
  	tcon = cifs_sb->tcon;

  	if (tcon)

  		caps = le64_to_cpu(tcon->fsUnixInfo.Capability);
  	else {
  		rc = -EIO;

  		FreeXid(xid);
  		return -EIO;

  	}

  #endif /* CONFIG_CIFS_POSIX */

  	switch (command) {

  		case CIFS_IOC_CHECKUMOUNT:

  			cFYI(1, "User unmount attempted");

  			if (cifs_sb->mnt_uid == current_uid())

  				rc = 0;
  			else {
  				rc = -EACCES;

  				cFYI(1, "uids do not match");

  			}
  			break;
  #ifdef CONFIG_CIFS_POSIX

  		case FS_IOC_GETFLAGS:

  			if (CIFS_UNIX_EXTATTR_CAP & caps) {

  				if (pSMBFile == NULL)

  					break;

  				rc = CIFSGetExtAttr(xid, tcon, pSMBFile->netfid,
  					&ExtAttrBits, &ExtAttrMask);

  				if (rc == 0)

  					rc = put_user(ExtAttrBits &

  						FS_FL_USER_VISIBLE,

  						(int __user *)arg);
  			}
  			break;

  		case FS_IOC_SETFLAGS:

  			if (CIFS_UNIX_EXTATTR_CAP & caps) {
  				if (get_user(ExtAttrBits, (int __user *)arg)) {

  					rc = -EFAULT;

  					break;

  				}

  				if (pSMBFile == NULL)

  					break;

  				/* rc= CIFSGetExtAttr(xid,tcon,pSMBFile->netfid,

  					extAttrBits, &ExtAttrMask);*/

  			}

  			cFYI(1, "set flags not implemented yet");

  			break;

  #endif /* CONFIG_CIFS_POSIX */

  		default:

  			cFYI(1, "unsupported ioctl");

  			break;

  	}

  	FreeXid(xid);

  	return rc;

  }