[CIFS] remove unused variables
[linux-2.6.git] / 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., 2005,2007
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 "cifspdu.h"
26 #include "cifsglob.h"
27 #include "cifsproto.h"
28 #include "cifs_debug.h"
29 #include "cifsfs.h"
30
31 #define CIFS_IOC_CHECKUMOUNT _IO(0xCF, 2)
32
33 long cifs_ioctl(struct file *filep, unsigned int command, unsigned long arg)
34 {
35         struct inode *inode = filep->f_dentry->d_inode;
36         int rc = -ENOTTY; /* strange error - but the precedent */
37         int xid;
38         struct cifs_sb_info *cifs_sb;
39 #ifdef CONFIG_CIFS_POSIX
40         __u64   ExtAttrBits = 0;
41         __u64   ExtAttrMask = 0;
42         __u64   caps;
43         struct cifsTconInfo *tcon;
44         struct cifsFileInfo *pSMBFile =
45                 (struct cifsFileInfo *)filep->private_data;
46 #endif /* CONFIG_CIFS_POSIX */
47
48         xid = GetXid();
49
50         cFYI(1, ("ioctl file %p  cmd %u  arg %lu", filep, command, arg));
51
52         cifs_sb = CIFS_SB(inode->i_sb);
53
54 #ifdef CONFIG_CIFS_POSIX
55         tcon = cifs_sb->tcon;
56         if (tcon)
57                 caps = le64_to_cpu(tcon->fsUnixInfo.Capability);
58         else {
59                 rc = -EIO;
60                 FreeXid(xid);
61                 return -EIO;
62         }
63 #endif /* CONFIG_CIFS_POSIX */
64
65         switch (command) {
66                 case CIFS_IOC_CHECKUMOUNT:
67                         cFYI(1, ("User unmount attempted"));
68                         if (cifs_sb->mnt_uid == current->uid)
69                                 rc = 0;
70                         else {
71                                 rc = -EACCES;
72                                 cFYI(1, ("uids do not match"));
73                         }
74                         break;
75 #ifdef CONFIG_CIFS_POSIX
76                 case FS_IOC_GETFLAGS:
77                         if (CIFS_UNIX_EXTATTR_CAP & caps) {
78                                 if (pSMBFile == NULL)
79                                         break;
80                                 rc = CIFSGetExtAttr(xid, tcon, pSMBFile->netfid,
81                                         &ExtAttrBits, &ExtAttrMask);
82                                 if (rc == 0)
83                                         rc = put_user(ExtAttrBits &
84                                                 FS_FL_USER_VISIBLE,
85                                                 (int __user *)arg);
86                         }
87                         break;
88
89                 case FS_IOC_SETFLAGS:
90                         if (CIFS_UNIX_EXTATTR_CAP & caps) {
91                                 if (get_user(ExtAttrBits, (int __user *)arg)) {
92                                         rc = -EFAULT;
93                                         break;
94                                 }
95                                 if (pSMBFile == NULL)
96                                         break;
97                                 /* rc= CIFSGetExtAttr(xid,tcon,pSMBFile->netfid,
98                                         extAttrBits, &ExtAttrMask);*/
99                         }
100                         cFYI(1, ("set flags not implemented yet"));
101                         break;
102 #endif /* CONFIG_CIFS_POSIX */
103                 default:
104                         cFYI(1, ("unsupported ioctl"));
105                         break;
106         }
107
108         FreeXid(xid);
109         return rc;
110 }