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.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2014, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
31 * lustre/include/lvfs.h
33 * lustre VFS/process permission interface
39 #include <linux/dcache.h>
40 #include <linux/err.h>
42 #include <linux/mutex.h>
43 #include <linux/namei.h>
44 #include <lustre_compat.h>
46 #define OBD_RUN_CTXT_MAGIC 0xC0FFEEAA
47 #define OBD_CTXT_DEBUG /* development-only debugging */
51 struct lvfs_run_ctxt {
52 struct vfsmount *pwdmnt;
61 static inline void OBD_SET_CTXT_MAGIC(struct lvfs_run_ctxt *ctxt)
64 ctxt->magic = OBD_RUN_CTXT_MAGIC;
68 /* ptlrpc_sec_ctx.c */
69 void push_ctxt(struct lvfs_run_ctxt *save, struct lvfs_run_ctxt *new_ctx);
70 void pop_ctxt(struct lvfs_run_ctxt *saved, struct lvfs_run_ctxt *new_ctx);
72 #if !defined(HAVE_ALLOC_FILE_PSEUDO) && defined(HAVE_SERVER_SUPPORT)
73 #define OPEN_FMODE(flag) ((__force fmode_t)(((flag + 1) & O_ACCMODE) | \
74 (flag & __FMODE_NONOTIFY)))
76 struct file *alloc_file_pseudo(struct inode *inode, struct vfsmount *mnt,
77 const char *name, int flags,
78 const struct file_operations *fops)
80 struct qstr this = QSTR_INIT(name, strlen(name));
84 path.dentry = d_alloc_pseudo(mnt->mnt_sb, &this);
86 return ERR_PTR(-ENOMEM);
87 path.mnt = mntget(mnt);
88 d_instantiate(path.dentry, inode);
89 file = alloc_file(&path, OPEN_FMODE(flags), fops);
94 file->f_flags = flags;
98 #endif /* !HAVE_ALLOC_FILE_PSEUDO */