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 #include "cifsfs.h"
  31
  32 int cifs_ioctl (struct inode * inode, struct file * filep,
  33                 unsigned int command, unsigned long arg)
  34 {
  35         int rc = -ENOTTY; /* strange error - but the precedent */
  36 #ifdef CONFIG_CIFS_POSIX
  37         __u64   ExtAttrBits = 0;
  38         __u64   ExtAttrMask = 0;
  39         __u64   caps;
  40 #endif /* CONFIG_CIFS_POSIX */
  41         int xid;
  42         struct cifs_sb_info *cifs_sb;
  43         struct cifsTconInfo *tcon;
  44         struct cifsFileInfo *pSMBFile =
  45                 (struct cifsFileInfo *)filep->private_data;
  46
  47         xid = GetXid();
  48
  49         cifs_sb = CIFS_SB(inode->i_sb);
  50         tcon = cifs_sb->tcon;
  51         if (pSMBFile == NULL)
  52                 goto cifs_ioctl_out;
  53
  54 #ifdef CONFIG_CIFS_POSIX
  55         if(tcon)
  56                 caps = le64_to_cpu(tcon->fsUnixInfo.Capability);
  57         else {
  58                 rc = -EIO;
  59                 goto cifs_ioctl_out;
  60         }
  61
  62         cFYI(1,("ioctl file %p  cmd %u  arg %lu",filep,command,arg));
  63         switch(command) {
  64                 case EXT2_IOC_GETFLAGS:
  65                         if(CIFS_UNIX_EXTATTR_CAP & caps) {
  66                                 rc = CIFSGetExtAttr(xid, tcon, pSMBFile->netfid,
  67                                         &ExtAttrBits, &ExtAttrMask);
  68                                 if(rc == 0)
  69                                         rc = put_user(ExtAttrBits &
  70                                                 EXT2_FL_USER_VISIBLE,
  71                                                 (int __user *)arg);
  72                         }
  73                         break;
  74
  75                 case EXT2_IOC_SETFLAGS:
  76                         if(CIFS_UNIX_EXTATTR_CAP & caps) {
  77                                 if(get_user(ExtAttrBits,(int __user *)arg)) {
  78                                         rc = -EFAULT;
  79                                         goto cifs_ioctl_out;
  80                                 }
  81                           /* rc = CIFSGetExtAttr(xid, tcon, pSMBFile->netfid,
  82                                         extAttrBits, &ExtAttrMask);*/
  83
  84                         }
  85                         cFYI(1,("set flags not implemented yet"));
  86                         break;
  87                 default:
  88                         cFYI(1,("unsupported ioctl"));
  89                         return rc;
  90         }
  91 #endif /* CONFIG_CIFS_POSIX */
  92
  93 cifs_ioctl_out:
  94         FreeXid(xid);
  95         return rc;
  96 }