[PATCH] OCFS2: The Second Oracle Cluster Filesystem
The OCFS2 file system module.
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
Signed-off-by: Kurt Hackel <kurt.hackel@oracle.com>
diff --git a/fs/ocfs2/ocfs2_lockid.h b/fs/ocfs2/ocfs2_lockid.h
new file mode 100644
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+++ b/fs/ocfs2/ocfs2_lockid.h
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+/* -*- mode: c; c-basic-offset: 8; -*-
+ * vim: noexpandtab sw=8 ts=8 sts=0:
+ *
+ * ocfs2_lockid.h
+ *
+ * Defines OCFS2 lockid bits.
+ *
+ * Copyright (C) 2002, 2005 Oracle. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * 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 for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this program; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 021110-1307, USA.
+ */
+
+#ifndef OCFS2_LOCKID_H
+#define OCFS2_LOCKID_H
+
+/* lock ids are made up in the following manner:
+ * name[0] --> type
+ * name[1-6] --> 6 pad characters, reserved for now
+ * name[7-22] --> block number, expressed in hex as 16 chars
+ * name[23-30] --> i_generation, expressed in hex 8 chars
+ * name[31] --> '\0' */
+#define OCFS2_LOCK_ID_MAX_LEN 32
+#define OCFS2_LOCK_ID_PAD "000000"
+
+enum ocfs2_lock_type {
+ OCFS2_LOCK_TYPE_META = 0,
+ OCFS2_LOCK_TYPE_DATA,
+ OCFS2_LOCK_TYPE_SUPER,
+ OCFS2_LOCK_TYPE_RENAME,
+ OCFS2_LOCK_TYPE_RW,
+ OCFS2_NUM_LOCK_TYPES
+};
+
+static inline char ocfs2_lock_type_char(enum ocfs2_lock_type type)
+{
+ char c;
+ switch (type) {
+ case OCFS2_LOCK_TYPE_META:
+ c = 'M';
+ break;
+ case OCFS2_LOCK_TYPE_DATA:
+ c = 'D';
+ break;
+ case OCFS2_LOCK_TYPE_SUPER:
+ c = 'S';
+ break;
+ case OCFS2_LOCK_TYPE_RENAME:
+ c = 'R';
+ break;
+ case OCFS2_LOCK_TYPE_RW:
+ c = 'W';
+ break;
+ default:
+ c = '\0';
+ }
+
+ return c;
+}
+
+#endif /* OCFS2_LOCKID_H */