blob: b0ea6687ab55e8116a4790a52682e24c71146c34 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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 */
Steve Frenchf654bac2005-04-28 22:41:04 -070023
Linus Torvalds1da177e2005-04-16 15:20:36 -070024#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"
Steve Frenchc67593a2005-04-28 22:41:04 -070030#include "cifsfs.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070031
Steve Frenchf28ac912005-04-28 22:41:07 -070032#define CIFS_IOC_CHECKUMOUNT _IO(0xCF, 2)
33
Linus Torvalds1da177e2005-04-16 15:20:36 -070034int 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 */
Steve Frenchc81156d2005-04-28 22:41:07 -070038 int xid;
39 struct cifs_sb_info *cifs_sb;
Linus Torvalds1da177e2005-04-16 15:20:36 -070040#ifdef CONFIG_CIFS_POSIX
Steve Frenchf654bac2005-04-28 22:41:04 -070041 __u64 ExtAttrBits = 0;
42 __u64 ExtAttrMask = 0;
Steve Frenchf28ac912005-04-28 22:41:07 -070043 __u64 caps;
Steve Frenchf654bac2005-04-28 22:41:04 -070044 struct cifsTconInfo *tcon;
45 struct cifsFileInfo *pSMBFile =
46 (struct cifsFileInfo *)filep->private_data;
Steve Frenchc81156d2005-04-28 22:41:07 -070047#endif /* CONFIG_CIFS_POSIX */
Steve Frenchf654bac2005-04-28 22:41:04 -070048
49 xid = GetXid();
50
Steve Frenchf28ac912005-04-28 22:41:07 -070051 cFYI(1,("ioctl file %p cmd %u arg %lu",filep,command,arg));
52
Steve Frenchf654bac2005-04-28 22:41:04 -070053 cifs_sb = CIFS_SB(inode->i_sb);
Steve Frenchf654bac2005-04-28 22:41:04 -070054
Steve Frenchc81156d2005-04-28 22:41:07 -070055#ifdef CONFIG_CIFS_POSIX
56 tcon = cifs_sb->tcon;
Steve Frenchf654bac2005-04-28 22:41:04 -070057 if(tcon)
58 caps = le64_to_cpu(tcon->fsUnixInfo.Capability);
59 else {
60 rc = -EIO;
Steve Frenchc81156d2005-04-28 22:41:07 -070061 FreeXid(xid);
62 return -EIO;
Steve Frenchf654bac2005-04-28 22:41:04 -070063 }
Steve Frenchc81156d2005-04-28 22:41:07 -070064#endif /* CONFIG_CIFS_POSIX */
Steve Frenchf654bac2005-04-28 22:41:04 -070065
Linus Torvalds1da177e2005-04-16 15:20:36 -070066 switch(command) {
Steve Frenchf28ac912005-04-28 22:41:07 -070067 case CIFS_IOC_CHECKUMOUNT:
68 cFYI(1,("User unmount attempted"));
Steve Frenchf28ac912005-04-28 22:41:07 -070069 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
Linus Torvalds1da177e2005-04-16 15:20:36 -070077 case EXT2_IOC_GETFLAGS:
Steve Frenchf654bac2005-04-28 22:41:04 -070078 if(CIFS_UNIX_EXTATTR_CAP & caps) {
Steve Frenchf28ac912005-04-28 22:41:07 -070079 if (pSMBFile == NULL)
Steve Frenchc81156d2005-04-28 22:41:07 -070080 break;
Steve Frenchf654bac2005-04-28 22:41:04 -070081 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
Linus Torvalds1da177e2005-04-16 15:20:36 -070090 case EXT2_IOC_SETFLAGS:
Steve Frenchf654bac2005-04-28 22:41:04 -070091 if(CIFS_UNIX_EXTATTR_CAP & caps) {
92 if(get_user(ExtAttrBits,(int __user *)arg)) {
93 rc = -EFAULT;
Steve Frenchc81156d2005-04-28 22:41:07 -070094 break;
Steve Frenchf654bac2005-04-28 22:41:04 -070095 }
Steve Frenchf28ac912005-04-28 22:41:07 -070096 if (pSMBFile == NULL)
Steve Frenchc81156d2005-04-28 22:41:07 -070097 break;
Steve Frenchf28ac912005-04-28 22:41:07 -070098 /* rc= CIFSGetExtAttr(xid,tcon,pSMBFile->netfid,
Steve Frenchf654bac2005-04-28 22:41:04 -070099 extAttrBits, &ExtAttrMask);*/
100
101 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700102 cFYI(1,("set flags not implemented yet"));
Steve Frenchf654bac2005-04-28 22:41:04 -0700103 break;
Steve Frenchf28ac912005-04-28 22:41:07 -0700104#endif /* CONFIG_CIFS_POSIX */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700105 default:
106 cFYI(1,("unsupported ioctl"));
Steve Frenchf28ac912005-04-28 22:41:07 -0700107 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700108 }
Steve Frenchf654bac2005-04-28 22:41:04 -0700109
Steve Frenchf654bac2005-04-28 22:41:04 -0700110 FreeXid(xid);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700111 return rc;
112}