-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
+/*
+ * GPL HEADER START
*
- * lustre/fid/fid_lib.c
- * Miscellaneous fid functions.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
- * Copyright (c) 2006 Cluster File Systems, Inc.
- * Author: Nikita Danilov <nikita@clusterfs.com>
- * Yury Umanets <umka@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 the Lustre file system, http://www.lustre.org
- * Lustre is a trademark of Cluster File Systems, Inc.
+ * 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 may have signed or agreed to another license before downloading
- * this software. If so, you are bound by the terms and conditions
- * of that agreement, and the following does not apply to you. See the
- * LICENSE file included with this distribution for more information.
+ * 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
*
- * If you did not agree to a different license, then this copy of Lustre
- * is open source 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.
+ * 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.
*
- * In either case, 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
- * license text for more details.
+ * GPL HEADER END
+ */
+/*
+ * Copyright (c) 2007, 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.
+ *
+ * lustre/fid/fid_lib.c
+ *
+ * Miscellaneous fid functions.
+ *
+ * Author: Nikita Danilov <nikita@clusterfs.com>
+ * Author: Yury Umanets <umka@clusterfs.com>
*/
-#ifndef EXPORT_SYMTAB
-# define EXPORT_SYMTAB
-#endif
#define DEBUG_SUBSYSTEM S_FID
#ifdef __KERNEL__
#include <lu_object.h>
#include <lustre_fid.h>
-/*
- * Sequence space, starts from 0x100000000ULL to have first 0x100000000ULL
- * sequences used for special purposes.
- * Those fids are reserved for special purposes (igifs, etc.).
+/**
+ * A cluster-wide range from which fid-sequences are granted to servers and
+ * then clients.
+ *
+ * Fid namespace:
+ * <pre>
+ * Normal FID: seq:64 [2^33,2^64-1] oid:32 ver:32
+ * IGIF : 0:32, ino:32 gen:32 0:32
+ * IDIF : 0:31, 1:1, ost-index:16, objd:48 0:32
+ * </pre>
+ *
+ * The first 0x400 sequences of normal FID are reserved for special purpose.
+ * FID_SEQ_START + 1 is for local file id generation.
+ * FID_SEQ_START + 2 is for .lustre directory and its objects
*/
-const struct lu_range LUSTRE_SEQ_SPACE_RANGE = {
- (0x400),
- ((__u64)~0ULL)
+const struct lu_seq_range LUSTRE_SEQ_SPACE_RANGE = {
+ FID_SEQ_NORMAL,
+ (__u64)~0ULL
};
EXPORT_SYMBOL(LUSTRE_SEQ_SPACE_RANGE);
/* Zero range, used for init and other purposes. */
-const struct lu_range LUSTRE_SEQ_ZERO_RANGE = {
+const struct lu_seq_range LUSTRE_SEQ_ZERO_RANGE = {
0,
0
};
EXPORT_SYMBOL(LUSTRE_SEQ_ZERO_RANGE);
/* Lustre Big Fs Lock fid. */
-const struct lu_fid LUSTRE_BFL_FID = { .f_seq = 0x0000000000000003,
- .f_oid = 0x0000000000000001,
+const struct lu_fid LUSTRE_BFL_FID = { .f_seq = FID_SEQ_SPECIAL,
+ .f_oid = FID_OID_SPECIAL_BFL,
.f_ver = 0x0000000000000000 };
EXPORT_SYMBOL(LUSTRE_BFL_FID);
-void range_cpu_to_le(struct lu_range *dst, const struct lu_range *src)
-{
- /* check that all fields are converted */
- CLASSERT(sizeof *src ==
- sizeof src->lr_start +
- sizeof src->lr_end);
- dst->lr_start = cpu_to_le64(src->lr_start);
- dst->lr_end = cpu_to_le64(src->lr_end);
-}
-EXPORT_SYMBOL(range_cpu_to_le);
-
-void range_le_to_cpu(struct lu_range *dst, const struct lu_range *src)
-{
- /* check that all fields are converted */
- CLASSERT(sizeof *src ==
- sizeof src->lr_start +
- sizeof src->lr_end);
- dst->lr_start = le64_to_cpu(src->lr_start);
- dst->lr_end = le64_to_cpu(src->lr_end);
-}
-EXPORT_SYMBOL(range_le_to_cpu);
+/** Special fid for ".lustre" directory */
+const struct lu_fid LU_DOT_LUSTRE_FID = { .f_seq = FID_SEQ_DOT_LUSTRE,
+ .f_oid = FID_OID_DOT_LUSTRE,
+ .f_ver = 0x0000000000000000 };
+EXPORT_SYMBOL(LU_DOT_LUSTRE_FID);
-#ifdef __KERNEL__
-void range_cpu_to_be(struct lu_range *dst, const struct lu_range *src)
-{
- /* check that all fields are converted */
- CLASSERT(sizeof *src ==
- sizeof src->lr_start +
- sizeof src->lr_end);
- dst->lr_start = cpu_to_be64(src->lr_start);
- dst->lr_end = cpu_to_be64(src->lr_end);
-}
-EXPORT_SYMBOL(range_cpu_to_be);
-
-void range_be_to_cpu(struct lu_range *dst, const struct lu_range *src)
-{
- /* check that all fields are converted */
- CLASSERT(sizeof *src ==
- sizeof src->lr_start +
- sizeof src->lr_end);
- dst->lr_start = be64_to_cpu(src->lr_start);
- dst->lr_end = be64_to_cpu(src->lr_end);
-}
-EXPORT_SYMBOL(range_be_to_cpu);
-
-#endif
+/** Special fid for "fid" special object in .lustre */
+const struct lu_fid LU_OBF_FID = { .f_seq = FID_SEQ_DOT_LUSTRE,
+ .f_oid = FID_OID_DOT_LUSTRE_OBF,
+ .f_ver = 0x0000000000000000 };
+EXPORT_SYMBOL(LU_OBF_FID);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff