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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * fs/cifs/ioctl.c
3 *
4 * vfs operations that deal with io control
5 *
Steve Frenchfb8c4b12007-07-10 01:16:18 +00006 * Copyright (C) International Business Machines Corp., 2005,2007
Linus Torvalds1da177e2005-04-16 15:20:36 -07007 * 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>
Linus Torvalds1da177e2005-04-16 15:20:36 -070025#include "cifspdu.h"
26#include "cifsglob.h"
27#include "cifsproto.h"
28#include "cifs_debug.h"
Steve Frenchc67593a2005-04-28 22:41:04 -070029#include "cifsfs.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070030
Steve Frenchf28ac912005-04-28 22:41:07 -070031#define CIFS_IOC_CHECKUMOUNT _IO(0xCF, 2)
32
Steve Frenchad7a2922008-02-07 23:25:02 +000033int cifs_ioctl(struct inode *inode, struct file *filep,
Linus Torvalds1da177e2005-04-16 15:20:36 -070034 unsigned int command, unsigned long arg)
35{
36 int rc = -ENOTTY; /* strange error - but the precedent */
Steve Frenchc81156d2005-04-28 22:41:07 -070037 int xid;
38 struct cifs_sb_info *cifs_sb;
Linus Torvalds1da177e2005-04-16 15:20:36 -070039#ifdef CONFIG_CIFS_POSIX
Steve Frenchf654bac2005-04-28 22:41:04 -070040 __u64 ExtAttrBits = 0;
41 __u64 ExtAttrMask = 0;
Steve Frenchf28ac912005-04-28 22:41:07 -070042 __u64 caps;
Steve Frenchf654bac2005-04-28 22:41:04 -070043 struct cifsTconInfo *tcon;
44 struct cifsFileInfo *pSMBFile =
45 (struct cifsFileInfo *)filep->private_data;
Steve Frenchc81156d2005-04-28 22:41:07 -070046#endif /* CONFIG_CIFS_POSIX */
Steve Frenchf654bac2005-04-28 22:41:04 -070047
48 xid = GetXid();
49
Steve French5fdae1f2007-06-05 18:30:44 +000050 cFYI(1, ("ioctl file %p cmd %u arg %lu", filep, command, arg));
Steve Frenchf28ac912005-04-28 22:41:07 -070051
Steve Frenchf654bac2005-04-28 22:41:04 -070052 cifs_sb = CIFS_SB(inode->i_sb);
Steve Frenchf654bac2005-04-28 22:41:04 -070053
Steve Frenchc81156d2005-04-28 22:41:07 -070054#ifdef CONFIG_CIFS_POSIX
55 tcon = cifs_sb->tcon;
Steve French5fdae1f2007-06-05 18:30:44 +000056 if (tcon)
Steve Frenchf654bac2005-04-28 22:41:04 -070057 caps = le64_to_cpu(tcon->fsUnixInfo.Capability);
58 else {
59 rc = -EIO;
Steve Frenchc81156d2005-04-28 22:41:07 -070060 FreeXid(xid);
61 return -EIO;
Steve Frenchf654bac2005-04-28 22:41:04 -070062 }
Steve Frenchc81156d2005-04-28 22:41:07 -070063#endif /* CONFIG_CIFS_POSIX */
Steve Frenchf654bac2005-04-28 22:41:04 -070064
Steve French5fdae1f2007-06-05 18:30:44 +000065 switch (command) {
Steve Frenchf28ac912005-04-28 22:41:07 -070066 case CIFS_IOC_CHECKUMOUNT:
Steve French5fdae1f2007-06-05 18:30:44 +000067 cFYI(1, ("User unmount attempted"));
68 if (cifs_sb->mnt_uid == current->uid)
Steve Frenchf28ac912005-04-28 22:41:07 -070069 rc = 0;
70 else {
71 rc = -EACCES;
Steve French5fdae1f2007-06-05 18:30:44 +000072 cFYI(1, ("uids do not match"));
Steve Frenchf28ac912005-04-28 22:41:07 -070073 }
74 break;
75#ifdef CONFIG_CIFS_POSIX
David Howells36695672006-08-29 19:06:16 +010076 case FS_IOC_GETFLAGS:
Steve French5fdae1f2007-06-05 18:30:44 +000077 if (CIFS_UNIX_EXTATTR_CAP & caps) {
Steve Frenchf28ac912005-04-28 22:41:07 -070078 if (pSMBFile == NULL)
Steve Frenchc81156d2005-04-28 22:41:07 -070079 break;
Steve Frenchf654bac2005-04-28 22:41:04 -070080 rc = CIFSGetExtAttr(xid, tcon, pSMBFile->netfid,
81 &ExtAttrBits, &ExtAttrMask);
Steve French5fdae1f2007-06-05 18:30:44 +000082 if (rc == 0)
Steve Frenchf654bac2005-04-28 22:41:04 -070083 rc = put_user(ExtAttrBits &
David Howells36695672006-08-29 19:06:16 +010084 FS_FL_USER_VISIBLE,
Steve Frenchf654bac2005-04-28 22:41:04 -070085 (int __user *)arg);
86 }
87 break;
88
David Howells36695672006-08-29 19:06:16 +010089 case FS_IOC_SETFLAGS:
Steve French5fdae1f2007-06-05 18:30:44 +000090 if (CIFS_UNIX_EXTATTR_CAP & caps) {
91 if (get_user(ExtAttrBits, (int __user *)arg)) {
Steve Frenchf654bac2005-04-28 22:41:04 -070092 rc = -EFAULT;
Steve Frenchc81156d2005-04-28 22:41:07 -070093 break;
Steve Frenchf654bac2005-04-28 22:41:04 -070094 }
Steve Frenchf28ac912005-04-28 22:41:07 -070095 if (pSMBFile == NULL)
Steve Frenchc81156d2005-04-28 22:41:07 -070096 break;
Steve Frenchf28ac912005-04-28 22:41:07 -070097 /* rc= CIFSGetExtAttr(xid,tcon,pSMBFile->netfid,
Steve Frenchf654bac2005-04-28 22:41:04 -070098 extAttrBits, &ExtAttrMask);*/
Steve Frenchf654bac2005-04-28 22:41:04 -070099 }
Steve French5fdae1f2007-06-05 18:30:44 +0000100 cFYI(1, ("set flags not implemented yet"));
Steve Frenchf654bac2005-04-28 22:41:04 -0700101 break;
Steve Frenchf28ac912005-04-28 22:41:07 -0700102#endif /* CONFIG_CIFS_POSIX */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700103 default:
Steve French5fdae1f2007-06-05 18:30:44 +0000104 cFYI(1, ("unsupported ioctl"));
Steve Frenchf28ac912005-04-28 22:41:07 -0700105 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700106 }
Steve Frenchf654bac2005-04-28 22:41:04 -0700107
Steve Frenchf654bac2005-04-28 22:41:04 -0700108 FreeXid(xid);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700109 return rc;
Steve French5fdae1f2007-06-05 18:30:44 +0000110}