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
cifs_ioctl(struct file * filep,unsigned int command,unsigned long arg)31 long cifs_ioctl(struct file *filep, unsigned int command, unsigned long arg)
32 {
33 struct inode *inode = file_inode(filep);
34 int rc = -ENOTTY; /* strange error - but the precedent */
35 unsigned int xid;
36 struct cifs_sb_info *cifs_sb;
37 #ifdef CONFIG_CIFS_POSIX
38 struct cifsFileInfo *pSMBFile = filep->private_data;
39 struct cifs_tcon *tcon;
40 __u64 ExtAttrBits = 0;
41 __u64 ExtAttrMask = 0;
42 __u64 caps;
43 #endif /* CONFIG_CIFS_POSIX */
44
45 xid = get_xid();
46
47 cifs_dbg(FYI, "ioctl file %p cmd %u arg %lu\n", filep, command, arg);
48
49 cifs_sb = CIFS_SB(inode->i_sb);
50
51 switch (command) {
52 #ifdef CONFIG_CIFS_POSIX
53 case FS_IOC_GETFLAGS:
54 if (pSMBFile == NULL)
55 break;
56 tcon = tlink_tcon(pSMBFile->tlink);
57 caps = le64_to_cpu(tcon->fsUnixInfo.Capability);
58 if (CIFS_UNIX_EXTATTR_CAP & caps) {
59 rc = CIFSGetExtAttr(xid, tcon,
60 pSMBFile->fid.netfid,
61 &ExtAttrBits, &ExtAttrMask);
62 if (rc == 0)
63 rc = put_user(ExtAttrBits &
64 FS_FL_USER_VISIBLE,
65 (int __user *)arg);
66 }
67 break;
68
69 case FS_IOC_SETFLAGS:
70 if (pSMBFile == NULL)
71 break;
72 tcon = tlink_tcon(pSMBFile->tlink);
73 caps = le64_to_cpu(tcon->fsUnixInfo.Capability);
74 if (CIFS_UNIX_EXTATTR_CAP & caps) {
75 if (get_user(ExtAttrBits, (int __user *)arg)) {
76 rc = -EFAULT;
77 break;
78 }
79 /*
80 * rc = CIFSGetExtAttr(xid, tcon,
81 * pSMBFile->fid.netfid,
82 * extAttrBits,
83 * &ExtAttrMask);
84 */
85 }
86 cifs_dbg(FYI, "set flags not implemented yet\n");
87 break;
88 #endif /* CONFIG_CIFS_POSIX */
89 default:
90 cifs_dbg(FYI, "unsupported ioctl\n");
91 break;
92 }
93
94 free_xid(xid);
95 return rc;
96 }
97