-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
+/*
+ * GPL HEADER START
*
- * Copyright (c) 2003 Cluster File Systems, Inc.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
- * This file is part of Lustre, http://www.lustre.org/
+ * 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.
*
- * 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.
+ * 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 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.
+ * 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
*
- * 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.
+ * 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.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
*/
-
-#ifndef EXPORT_SYMTAB
-# define EXPORT_SYMTAB
-#endif
#define DEBUG_SUBSYSTEM S_FILTER
-#include <linux/obd.h>
-#include <linux/lvfs.h>
-
-struct dentry *lvfs_id2dentry(struct lvfs_run_ctxt *ctxt, __u64 id,
- __u32 gen, __u64 gr, void *data)
-{
- return ctxt->cb_ops.l_id2dentry(id, gen, gr, data);
-}
-EXPORT_SYMBOL(lvfs_id2dentry);
-
-static struct list_head lvfs_context_list;
-
-void lvfs_mount_list_init(void)
-{
- INIT_LIST_HEAD(&lvfs_context_list);
-}
-
-void lvfs_mount_list_cleanup(void)
-{
- struct list_head *tmp;
-
- if (list_empty(&lvfs_context_list))
- return;
-
- list_for_each(tmp, &lvfs_context_list) {
- struct lvfs_obd_ctxt *data =
- list_entry(tmp, struct lvfs_obd_ctxt, loc_list);
- CERROR("device %s still mounted with refcount %d\n",
- data->loc_name, atomic_read(&data->loc_refcount));
- }
-}
+#include <lvfs.h>
-static inline
-struct lvfs_obd_ctxt *get_lvfs_mount(struct lvfs_obd_ctxt *lvfs_ctxt)
+struct dentry *lvfs_fid2dentry(struct lvfs_run_ctxt *ctxt, __u64 id,
+ __u32 gen, __u64 gr, void *data)
{
- atomic_inc(&lvfs_ctxt->loc_refcount);
- return lvfs_ctxt;
-}
-
-static struct lvfs_obd_ctxt *add_lvfs_mount(struct vfsmount *mnt, char *name)
-{
- struct lvfs_obd_ctxt *lvfs_ctxt;
- ENTRY;
-
- OBD_ALLOC(lvfs_ctxt, sizeof(*lvfs_ctxt));
- if (!lvfs_ctxt) {
- CERROR("No Memory\n");
- RETURN(NULL);
- }
-
- if (name) {
- int length = strlen(name) + 1;
-
- OBD_ALLOC(lvfs_ctxt->loc_name, length);
- if (!lvfs_ctxt->loc_name) {
- CERROR("No Memory\n");
- OBD_FREE(lvfs_ctxt, sizeof(*lvfs_ctxt));
- RETURN(NULL);
- }
- memcpy(lvfs_ctxt->loc_name, name, length);
- }
- lvfs_ctxt->loc_mnt = mnt;
- list_add(&lvfs_ctxt->loc_list, &lvfs_context_list);
- atomic_set(&lvfs_ctxt->loc_refcount, 1);
- RETURN(lvfs_ctxt);
-}
-
-void lvfs_umount_fs(struct lvfs_obd_ctxt *lvfs_ctxt)
-{
- if (lvfs_ctxt && atomic_dec_and_test(&lvfs_ctxt->loc_refcount)) {
- struct vfsmount *mnt = lvfs_ctxt->loc_mnt;
-
- list_del(&lvfs_ctxt->loc_list);
- if (atomic_read(&mnt->mnt_count) > 2)
- CERROR("mount busy, mnt %p mnt_count %d != 2\n", mnt,
- atomic_read(&mnt->mnt_count));
-
- mntput(mnt);
-
- if (lvfs_ctxt->loc_name)
- OBD_FREE(lvfs_ctxt->loc_name,
- strlen(lvfs_ctxt->loc_name) + 1);
- OBD_FREE(lvfs_ctxt, sizeof(*lvfs_ctxt));
- dev_clear_rdonly(2);
- }
-}
-EXPORT_SYMBOL(lvfs_umount_fs);
-
-int lvfs_mount_fs(char *name, char *fstype, char *options, int flags,
- struct lvfs_obd_ctxt **lvfs_ctxt)
-{
- struct vfsmount *mnt = NULL;
- struct list_head *tmp;
- int rc = 0;
- ENTRY;
-
- list_for_each(tmp, &lvfs_context_list) {
- struct lvfs_obd_ctxt *data =
- list_entry(tmp, struct lvfs_obd_ctxt, loc_list);
- if (strcmp(data->loc_name, name) == 0) {
- *lvfs_ctxt = get_lvfs_mount(data);
- RETURN(0);
- }
- }
- mnt = do_kern_mount(fstype, flags, name, options);
-
- if (IS_ERR(mnt)) {
- rc = PTR_ERR(mnt);
- CERROR("do_kern_mount failed: rc = %d\n", rc);
- GOTO(out, rc);
- }
- CDEBUG(D_SUPER, "%s: mnt = %p\n", name, mnt);
- /*add this lvfs context to the lvfs_mount_list*/
- *lvfs_ctxt = add_lvfs_mount(mnt, name);
- if (!*lvfs_ctxt) {
- mntput(mnt);
- CERROR("add_lvfs_mount failed\n");
- GOTO(out, rc = -EINVAL);
- }
-out:
- RETURN(rc);
+ return ctxt->cb_ops.l_fid2dentry(id, gen, gr, data);
}
-EXPORT_SYMBOL(lvfs_mount_fs);
+EXPORT_SYMBOL(lvfs_fid2dentry);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff