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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 | } |
111 |
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od-2011-09-18
v2.6.34-rc5
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v3.9