-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
+/*
+ * GPL HEADER START
*
- * Copyright (C) 2001, 2002, 2003, 2004 Cluster File Systems, Inc.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
- * Author: <braam@clusterfs.com>
+ * 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 file is part of Lustre, http://www.lustre.org.
+ * 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).
*
- * Lustre is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
+ * 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
*
- * Lustre 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 for more details.
+ * 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.
*
- * You should have received a copy of the GNU General Public License
- * along with Lustre; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * GPL HEADER END
+ */
+/*
+ * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Use is subject to license terms.
+ *
+ * Copyright (c) 2012, 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 __LVFS_H__
-#define __LVFS_H__
-
-#include <libcfs/kp30.h>
+#ifndef __LINUX_LVFS_H__
+#define __LINUX_LVFS_H__
-#define LL_ID_NAMELEN (16 + 1 + 8 + 1)
+#ifndef __LVFS_H__
+#error Do not #include this file directly. #include <lvfs.h> instead
+#endif
#if defined __KERNEL__
-#include <linux/dcache.h>
-#include <linux/namei.h>
#include <linux/lustre_compat25.h>
+#include <linux/lustre_common.h>
#include <linux/lvfs_linux.h>
#else
#include <liblustre.h>
#endif
-struct mds_grp_hash_entry;
+#define LLOG_LVFS
/* simple.c */
+
struct lvfs_ucred {
- struct lustre_sec_desc *luc_lsd;
- struct group_info *luc_ginfo;
- __u64 luc_nid;
__u32 luc_uid;
__u32 luc_gid;
__u32 luc_fsuid;
__u32 luc_fsgid;
- __u32 luc_cap;
+ cfs_kernel_cap_t luc_cap;
__u32 luc_umask;
+ struct group_info *luc_ginfo;
+ struct md_identity *luc_identity;
};
struct lvfs_callback_ops {
- struct dentry *(*l_id2dentry)(__u64 ino, __u32 gen,
- __u64 gr, void *data);
+ struct dentry *(*l_fid2dentry)(__u64 id_ino, __u32 gen, __u64 gr, void *data);
};
#define OBD_RUN_CTXT_MAGIC 0xC0FFEEAA
#define OBD_CTXT_DEBUG /* development-only debugging */
struct lvfs_run_ctxt {
- struct vfsmount *pwdmnt;
+ struct vfsmount *pwdmnt;
struct dentry *pwd;
mm_segment_t fs;
struct lvfs_ucred luc;
- struct lvfs_callback_ops cb_ops;
int ngroups;
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,4)
+ struct lvfs_callback_ops cb_ops;
struct group_info *group_info;
-#else
- struct group_info group_info;
-#endif
+ struct dt_device *dt;
#ifdef OBD_CTXT_DEBUG
- int pid;
__u32 magic;
#endif
};
-struct lvfs_obd_ctxt {
- struct vfsmount *loc_mnt;
- atomic_t loc_refcount;
- char *loc_name;
- struct list_head loc_list;
-};
-
#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
-/* lvfs_common.c */
-struct dentry *lvfs_id2dentry(struct lvfs_run_ctxt *, __u64,
- __u32, __u64 ,void *data);
+#ifdef __KERNEL__
-void push_ctxt(struct lvfs_run_ctxt *save, struct lvfs_run_ctxt *new_ctx,
- struct lvfs_ucred *cred);
-void pop_ctxt(struct lvfs_run_ctxt *saved, struct lvfs_run_ctxt *new_ctx,
- struct lvfs_ucred *cred);
+struct dentry *simple_mkdir(struct dentry *dir, struct vfsmount *mnt,
+ const char *name, int mode, int fix);
+int lustre_rename(struct dentry *dir, struct vfsmount *mnt, char *oldname,
+ char *newname);
-#ifdef __KERNEL__
-int lvfs_reint(struct super_block *sb, void *r_rec);
-int lvfs_undo(struct super_block *sb, void *r_rec);
-struct dentry *simple_mkdir(struct dentry *dir, char *name, int mode, int fix);
-struct dentry *simple_mknod(struct dentry *dir, char *name, int mode, int fix);
-int lustre_fread(struct file *file, void *buf, int len, loff_t *off);
-int lustre_fwrite(struct file *file, const void *buf, int len, loff_t *off);
-int lustre_fsync(struct file *file);
-long l_readdir(struct file * file, struct list_head *dentry_list);
-int lvfs_mount_fs(char *name, char *fstype, char *options, int flags,
- struct lvfs_obd_ctxt **lvfs_ctxt);
-void lvfs_umount_fs(struct lvfs_obd_ctxt *lvfs_ctxt);
static inline void l_dput(struct dentry *de)
{
if (!de || IS_ERR(de))
return;
//shrink_dcache_parent(de);
- LASSERT(atomic_read(&de->d_count) > 0);
+ LASSERT(d_refcount(de) > 0);
dput(de);
}
-#ifdef S_PDIROPS
-void *lock_dir(struct inode *dir, struct qstr *name);
-void unlock_dir(struct inode *dir, void *lock);
-#endif
-
-/*
- * typeof here is to suppress gcc warnings (gcc4, maybe others too) about wrong
- * type in assignment. As kernel type may be chnaged we doing it this way.
- * --umka
+/* 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.
*/
-#define qstr_assign(qstr, n, l) \
-do { \
- typeof(l) _len = (l); \
- typeof(n) _name = (n); \
- (qstr)->name = (typeof((qstr)->name))_name; \
- (qstr)->len = (typeof((qstr)->len))_len; \
-} while (0)
-
-/* 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 *name, struct dentry *dparent, int namelen)
+static inline struct dentry *ll_lookup_one_len(const char *fid_name,
+ struct dentry *dparent,
+ int fid_namelen)
{
- struct dentry *dchild;
-
-#ifdef S_PDIROPS
- struct qstr qstr;
- void *lock;
-
- qstr_assign(&qstr, name, namelen);
- lock = lock_dir(dparent->d_inode, &qstr);
-#else
- down(&dparent->d_inode->i_sem);
-#endif
-
- dchild = lookup_one_len(name, dparent, namelen);
-
-#ifdef S_PDIROPS
- unlock_dir(dparent->d_inode, lock);
-#else
- up(&dparent->d_inode->i_sem);
-#endif
-
- 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;
+ 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;
}
static inline void ll_sleep(int t)
{
- set_current_state(TASK_INTERRUPTIBLE);
- schedule_timeout(t * HZ);
- set_current_state(TASK_RUNNING);
+ cfs_set_current_state(CFS_TASK_INTERRUPTIBLE);
+ cfs_schedule_timeout(t * CFS_HZ);
+ cfs_set_current_state(CFS_TASK_RUNNING);
}
#endif
-static inline int ll_id2str(char *str, __u64 id, __u32 generation)
-{
- return sprintf(str, "%llx:%08x", (unsigned long long)id,
- generation);
-}
-
#endif
git://git.whamcloud.com / fs / lustre-release.git / blobdiff