[PATCH] x86-64: Remove redundant swiotlb=force handling
[pandora-kernel.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
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 #define CIFS_IOC_CHECKUMOUNT _IO(0xCF, 2)
33
34 int cifs_ioctl (struct inode * inode, struct file * filep, 
35                 unsigned int command, unsigned long arg)
36 {
37         int rc = -ENOTTY; /* strange error - but the precedent */
38         int xid;
39         struct cifs_sb_info *cifs_sb;
40 #ifdef CONFIG_CIFS_POSIX
41         __u64   ExtAttrBits = 0;
42         __u64   ExtAttrMask = 0;
43         __u64   caps;
44         struct cifsTconInfo *tcon;
45         struct cifsFileInfo *pSMBFile =
46                 (struct cifsFileInfo *)filep->private_data;
47 #endif /* CONFIG_CIFS_POSIX */
48
49         xid = GetXid();
50
51         cFYI(1,("ioctl file %p  cmd %u  arg %lu",filep,command,arg));
52
53         cifs_sb = CIFS_SB(inode->i_sb);
54
55 #ifdef CONFIG_CIFS_POSIX
56         tcon = cifs_sb->tcon;
57         if(tcon)
58                 caps = le64_to_cpu(tcon->fsUnixInfo.Capability);
59         else {
60                 rc = -EIO;
61                 FreeXid(xid);
62                 return -EIO;
63         }
64 #endif /* CONFIG_CIFS_POSIX */
65
66         switch(command) {
67                 case CIFS_IOC_CHECKUMOUNT:
68                         cFYI(1,("User unmount attempted"));
69                         if(cifs_sb->mnt_uid == current->uid)
70                                 rc = 0;
71                         else {
72                                 rc = -EACCES;
73                                 cFYI(1,("uids do not match"));
74                         }
75                         break;
76 #ifdef CONFIG_CIFS_POSIX
77                 case EXT2_IOC_GETFLAGS:
78                         if(CIFS_UNIX_EXTATTR_CAP & caps) {
79                                 if (pSMBFile == NULL)
80                                         break;
81                                 rc = CIFSGetExtAttr(xid, tcon, pSMBFile->netfid,
82                                         &ExtAttrBits, &ExtAttrMask);
83                                 if(rc == 0)
84                                         rc = put_user(ExtAttrBits &
85                                                 EXT2_FL_USER_VISIBLE,
86                                                 (int __user *)arg);
87                         }
88                         break;
89
90                 case EXT2_IOC_SETFLAGS:
91                         if(CIFS_UNIX_EXTATTR_CAP & caps) {
92                                 if(get_user(ExtAttrBits,(int __user *)arg)) {
93                                         rc = -EFAULT;
94                                         break;
95                                 }
96                                 if (pSMBFile == NULL)
97                                         break;
98                                 /* rc= CIFSGetExtAttr(xid,tcon,pSMBFile->netfid,
99                                         extAttrBits, &ExtAttrMask);*/
100                                 
101                         }
102                         cFYI(1,("set flags not implemented yet"));
103                         break;
104 #endif /* CONFIG_CIFS_POSIX */
105                 default:
106                         cFYI(1,("unsupported ioctl"));
107                         break;
108         }
109
110         FreeXid(xid);
111         return rc;
112