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1da177e4 LT |
1 | /* |
2 | * fs/cifs/ioctl.c | |
3 | * | |
4 | * vfs operations that deal with io control | |
5 | * | |
64a5cfa6 | 6 | * Copyright (C) International Business Machines Corp., 2005,2013 |
1da177e4 LT |
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 | */ | |
f654bac2 | 23 | |
1da177e4 | 24 | #include <linux/fs.h> |
1da177e4 LT |
25 | #include "cifspdu.h" |
26 | #include "cifsglob.h" | |
27 | #include "cifsproto.h" | |
28 | #include "cifs_debug.h" | |
c67593a0 | 29 | #include "cifsfs.h" |
1da177e4 | 30 | |
f9ddcca4 | 31 | long cifs_ioctl(struct file *filep, unsigned int command, unsigned long arg) |
1da177e4 | 32 | { |
496ad9aa | 33 | struct inode *inode = file_inode(filep); |
1da177e4 | 34 | int rc = -ENOTTY; /* strange error - but the precedent */ |
6d5786a3 | 35 | unsigned int xid; |
c81156dd | 36 | struct cifs_sb_info *cifs_sb; |
ba00ba64 | 37 | struct cifsFileInfo *pSMBFile = filep->private_data; |
96daf2b0 | 38 | struct cifs_tcon *tcon; |
f654bac2 | 39 | __u64 ExtAttrBits = 0; |
61876395 | 40 | __u64 caps; |
f654bac2 | 41 | |
6d5786a3 | 42 | xid = get_xid(); |
f654bac2 | 43 | |
f96637be | 44 | cifs_dbg(FYI, "ioctl file %p cmd %u arg %lu\n", filep, command, arg); |
f28ac91b | 45 | |
f654bac2 | 46 | cifs_sb = CIFS_SB(inode->i_sb); |
f654bac2 | 47 | |
5fdae1f6 | 48 | switch (command) { |
36695673 | 49 | case FS_IOC_GETFLAGS: |
61876395 JL |
50 | if (pSMBFile == NULL) |
51 | break; | |
52 | tcon = tlink_tcon(pSMBFile->tlink); | |
53 | caps = le64_to_cpu(tcon->fsUnixInfo.Capability); | |
64a5cfa6 | 54 | #ifdef CONFIG_CIFS_POSIX |
5fdae1f6 | 55 | if (CIFS_UNIX_EXTATTR_CAP & caps) { |
f10d9ba4 | 56 | __u64 ExtAttrMask = 0; |
4b4de76e PS |
57 | rc = CIFSGetExtAttr(xid, tcon, |
58 | pSMBFile->fid.netfid, | |
59 | &ExtAttrBits, &ExtAttrMask); | |
5fdae1f6 | 60 | if (rc == 0) |
f654bac2 | 61 | rc = put_user(ExtAttrBits & |
36695673 | 62 | FS_FL_USER_VISIBLE, |
f654bac2 | 63 | (int __user *)arg); |
64a5cfa6 SF |
64 | if (rc != EOPNOTSUPP) |
65 | break; | |
66 | } | |
67 | #endif /* CONFIG_CIFS_POSIX */ | |
68 | rc = 0; | |
69 | if (CIFS_I(inode)->cifsAttrs & ATTR_COMPRESSED) { | |
70 | /* add in the compressed bit */ | |
71 | ExtAttrBits = FS_COMPR_FL; | |
72 | rc = put_user(ExtAttrBits & FS_FL_USER_VISIBLE, | |
73 | (int __user *)arg); | |
f654bac2 SF |
74 | } |
75 | break; | |
36695673 | 76 | case FS_IOC_SETFLAGS: |
61876395 JL |
77 | if (pSMBFile == NULL) |
78 | break; | |
79 | tcon = tlink_tcon(pSMBFile->tlink); | |
80 | caps = le64_to_cpu(tcon->fsUnixInfo.Capability); | |
64a5cfa6 SF |
81 | |
82 | if (get_user(ExtAttrBits, (int __user *)arg)) { | |
83 | rc = -EFAULT; | |
84 | break; | |
85 | } | |
86 | ||
87 | /* | |
88 | * if (CIFS_UNIX_EXTATTR_CAP & caps) | |
89 | * rc = CIFSSetExtAttr(xid, tcon, | |
90 | * pSMBFile->fid.netfid, | |
91 | * extAttrBits, | |
92 | * &ExtAttrMask); | |
93 | * if (rc != EOPNOTSUPP) | |
94 | * break; | |
95 | */ | |
96 | ||
97 | /* Currently only flag we can set is compressed flag */ | |
98 | if ((ExtAttrBits & FS_COMPR_FL) == 0) | |
99 | break; | |
100 | ||
101 | /* Try to set compress flag */ | |
102 | if (tcon->ses->server->ops->set_compression) { | |
103 | rc = tcon->ses->server->ops->set_compression( | |
104 | xid, tcon, pSMBFile); | |
105 | cifs_dbg(FYI, "set compress flag rc %d\n", rc); | |
f654bac2 | 106 | } |
f654bac2 | 107 | break; |
1da177e4 | 108 | default: |
f96637be | 109 | cifs_dbg(FYI, "unsupported ioctl\n"); |
f28ac91b | 110 | break; |
1da177e4 | 111 | } |
f654bac2 | 112 | |
6d5786a3 | 113 | free_xid(xid); |
1da177e4 | 114 | return rc; |
5fdae1f6 | 115 | } |