err.no Git - linux-2.6/blob - fs/cifs/ioctl.c

   1 /*
   2  *   fs/cifs/ioctl.c
   3  *
   4  *   vfs operations that deal with io control
   5  *
   6  *   Copyright (C) International Business Machines  Corp., 2005
   7  *   Author(s): Steve French (sfrench@us.ibm.com)
   8  *
   9  *   This library is free software; you can redistribute it and/or modify
  10  *   it under the terms of the GNU Lesser General Public License as published
  11  *   by the Free Software Foundation; either version 2.1 of the License, or
  12  *   (at your option) any later version.
  13  *
  14  *   This library is distributed in the hope that it will be useful,
  15  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
  17  *   the GNU Lesser General Public License for more details.
  18  *
  19  *   You should have received a copy of the GNU Lesser General Public License
  20  *   along with this library; if not, write to the Free Software
  21  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  22  */
  23
  24 #include <linux/fs.h>
  25 #include <linux/ext2_fs.h>
  26 #include "cifspdu.h"
  27 #include "cifsglob.h"
  28 #include "cifsproto.h"
  29 #include "cifs_debug.h"
  30
  31 int cifs_ioctl (struct inode * inode, struct file * filep,
  32                 unsigned int command, unsigned long arg)
  33 {
  34         int rc = -ENOTTY; /* strange error - but the precedent */
  35 #ifdef CONFIG_CIFS_POSIX
  36         __u64   ExtAttrBits = 0;
  37         __u64   ExtAttrMask = 0;
  38         __u64   caps;
  39 #endif /* CONFIG_CIFS_POSIX */
  40         int xid;
  41         struct cifs_sb_info *cifs_sb;
  42         struct cifsTconInfo *tcon;
  43         struct cifsFileInfo *pSMBFile =
  44                 (struct cifsFileInfo *)filep->private_data;
  45
  46         xid = GetXid();
  47
  48         cifs_sb = CIFS_SB(inode->i_sb);
  49         tcon = cifs_sb->tcon;
  50         if (pSMBFile == NULL)
  51                 goto cifs_ioctl_out;
  52
  53 #ifdef CONFIG_CIFS_POSIX
  54         if(tcon)
  55                 caps = le64_to_cpu(tcon->fsUnixInfo.Capability);
  56         else {
  57                 rc = -EIO;
  58                 goto cifs_ioctl_out;
  59         }
  60
  61         cFYI(1,("ioctl file %p  cmd %u  arg %lu",filep,command,arg));
  62         switch(command) {
  63                 case EXT2_IOC_GETFLAGS:
  64                         if(CIFS_UNIX_EXTATTR_CAP & caps) {
  65                                 rc = CIFSGetExtAttr(xid, tcon, pSMBFile->netfid,
  66                                         &ExtAttrBits, &ExtAttrMask);
  67                                 if(rc == 0)
  68                                         rc = put_user(ExtAttrBits &
  69                                                 EXT2_FL_USER_VISIBLE,
  70                                                 (int __user *)arg);
  71                         }
  72                         break;
  73
  74                 case EXT2_IOC_SETFLAGS:
  75                         if(CIFS_UNIX_EXTATTR_CAP & caps) {
  76                                 if(get_user(ExtAttrBits,(int __user *)arg)) {
  77                                         rc = -EFAULT;
  78                                         goto cifs_ioctl_out;
  79                                 }
  80                           /* rc = CIFSGetExtAttr(xid, tcon, pSMBFile->netfid,
  81                                         extAttrBits, &ExtAttrMask);*/
  82
  83                         }
  84                         cFYI(1,("set flags not implemented yet"));
  85                         break;
  86                 default:
  87                         cFYI(1,("unsupported ioctl"));
  88                         return rc;
  89         }
  90 #endif /* CONFIG_CIFS_POSIX */
  91
  92 cifs_ioctl_out:
  93         FreeXid(xid);
  94         return rc;
  95 }