4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2012, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/include/linux/lvfs.h
38 * lustre VFS/process permission interface
41 #ifndef __LINUX_LVFS_H__
42 #define __LINUX_LVFS_H__
45 #error Do not #include this file directly. #include <lvfs.h> instead
48 #include "lustre_compat25.h"
49 #include "lustre_common.h"
50 #include "lvfs_linux.h"
63 struct group_info
*luc_ginfo
;
64 struct md_identity
*luc_identity
;
67 struct lvfs_callback_ops
{
68 struct dentry
*(*l_fid2dentry
)(__u64 id_ino
, __u32 gen
, __u64 gr
, void *data
);
71 #define OBD_RUN_CTXT_MAGIC 0xC0FFEEAA
72 #define OBD_CTXT_DEBUG /* development-only debugging */
73 struct lvfs_run_ctxt
{
74 struct vfsmount
*pwdmnt
;
77 struct lvfs_ucred luc
;
79 struct lvfs_callback_ops cb_ops
;
80 struct group_info
*group_info
;
88 #define OBD_SET_CTXT_MAGIC(ctxt) (ctxt)->magic = OBD_RUN_CTXT_MAGIC
90 #define OBD_SET_CTXT_MAGIC(ctxt) do {} while(0)
94 int lustre_rename(struct dentry
*dir
, struct vfsmount
*mnt
, char *oldname
,
97 static inline void l_dput(struct dentry
*de
)
99 if (!de
|| IS_ERR(de
))
101 //shrink_dcache_parent(de);
102 LASSERT(d_count(de
) > 0);
106 /* We need to hold the inode semaphore over the dcache lookup itself, or we
107 * run the risk of entering the filesystem lookup path concurrently on SMP
108 * systems, and instantiating two inodes for the same entry. We still
109 * protect against concurrent addition/removal races with the DLM locking.
111 static inline struct dentry
*ll_lookup_one_len(const char *fid_name
,
112 struct dentry
*dparent
,
115 struct dentry
*dchild
;
117 mutex_lock(&dparent
->d_inode
->i_mutex
);
118 dchild
= lookup_one_len(fid_name
, dparent
, fid_namelen
);
119 mutex_unlock(&dparent
->d_inode
->i_mutex
);
121 if (IS_ERR(dchild
) || dchild
->d_inode
== NULL
)
124 if (is_bad_inode(dchild
->d_inode
)) {
125 CERROR("bad inode returned %lu/%u\n",
126 dchild
->d_inode
->i_ino
, dchild
->d_inode
->i_generation
);
128 dchild
= ERR_PTR(-ENOENT
);
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