-/*
- * GPL HEADER START
- *
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 only,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License version 2 for more details (a copy is included
- * in the LICENSE file that accompanied this code).
- *
- * You should have received a copy of the GNU General Public License
- * version 2 along with this program; If not, see
- * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
- *
- * GPL HEADER END
- */
-/*
- * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
- * Use is subject to license terms.
- *
- * Copyright (c) 2012, 2014, Intel Corporation.
- */
-/*
- * This file is part of Lustre, http://www.lustre.org/
- * Lustre is a trademark of Sun Microsystems, Inc.
- *
- * lustre/include/linux/lvfs.h
- *
- * lustre VFS/process permission interface
- */
-
-#ifndef __LINUX_LVFS_H__
-#define __LINUX_LVFS_H__
-
-#ifndef __LVFS_H__
-#error Do not #include this file directly. #include <lvfs.h> instead
-#endif
-
-#include <linux/lustre_compat25.h>
-#include <linux/fs.h>
-
-#define OBD_RUN_CTXT_MAGIC 0xC0FFEEAA
-#define OBD_CTXT_DEBUG /* development-only debugging */
-
-struct dt_device;
-
-struct lvfs_run_ctxt {
- struct vfsmount *pwdmnt;
- struct dentry *pwd;
- mm_segment_t fs;
- uint32_t umask;
- struct dt_device *dt;
-#ifdef OBD_CTXT_DEBUG
- uint32_t magic;
-#endif
-};
-
-#ifdef OBD_CTXT_DEBUG
-#define OBD_SET_CTXT_MAGIC(ctxt) (ctxt)->magic = OBD_RUN_CTXT_MAGIC
-#else
-#define OBD_SET_CTXT_MAGIC(ctxt) do {} while(0)
-#endif
-
-
-/* We need to hold the inode semaphore over the dcache lookup itself, or we
- * run the risk of entering the filesystem lookup path concurrently on SMP
- * systems, and instantiating two inodes for the same entry. We still
- * protect against concurrent addition/removal races with the DLM locking.
- */
-static inline struct dentry *ll_lookup_one_len(const char *fid_name,
- struct dentry *dparent,
- int fid_namelen)
-{
- struct dentry *dchild;
-
- mutex_lock(&dparent->d_inode->i_mutex);
- dchild = lookup_one_len(fid_name, dparent, fid_namelen);
- mutex_unlock(&dparent->d_inode->i_mutex);
-
- if (IS_ERR(dchild) || dchild->d_inode == NULL)
- return dchild;
-
- if (is_bad_inode(dchild->d_inode)) {
- CERROR("bad inode returned %lu/%u\n",
- dchild->d_inode->i_ino, dchild->d_inode->i_generation);
- dput(dchild);
- dchild = ERR_PTR(-ENOENT);
- }
- return dchild;
-}
-
-
-#endif
git://git.whamcloud.com / fs / lustre-release.git / commitdiff