4 * vfs operations that deal with the file control API
6 * Copyright (C) International Business Machines Corp., 2003,2004
7 * Author(s): Steve French (sfrench@us.ibm.com)
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.
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.
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
24 #include <linux/stat.h>
25 #include <linux/fcntl.h>
27 #include "cifsproto.h"
28 #include "cifs_unicode.h"
29 #include "cifs_debug.h"
31 int cifs_dir_notify(struct file * file, unsigned long arg)
36 struct cifs_sb_info *cifs_sb;
37 struct cifsTconInfo *pTcon;
38 char *full_path = NULL;
39 __u32 filter = FILE_NOTIFY_CHANGE_NAME | FILE_NOTIFY_CHANGE_ATTRIBUTES;
43 cifs_sb = CIFS_SB(file->f_dentry->d_sb);
44 pTcon = cifs_sb->tcon;
46 down(&file->f_dentry->d_sb->s_vfs_rename_sem);
47 full_path = build_path_from_dentry(file->f_dentry);
48 up(&file->f_dentry->d_sb->s_vfs_rename_sem);
50 if(full_path == NULL) {
53 cFYI(1,("cifs dir notify on file %s",full_path));
54 rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_OPEN,
55 GENERIC_READ | SYNCHRONIZE, 0 /* create options */,
56 &netfid, &oplock,NULL, cifs_sb->local_nls);
57 /* BB fixme - add this handle to a notify handle list */
59 cFYI(1,("Could not open directory for notify"));
61 rc = CIFSSMBNotify(xid, pTcon, 1 /* subdirs */, netfid,
62 filter, cifs_sb->local_nls);
63 /* BB add code to close file eventually (at unmount
64 it would close automatically but may be a way
65 to do it easily when inode freed or when
66 notify info is cleared/changed */