/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=8:tabstop=8:
*
- * create_iam.c
- * User-level tool for creation of iam files.
+ * GPL HEADER START
*
- * Copyright (c) 2006 Cluster File Systems, Inc.
- * Author: Wang Di <wangdi@clusterfs.com>
- * Author: Nikita Danilov <nikita@clusterfs.com>
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
- * 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 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.
*
- * 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.
+ * 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).
*
- * 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.
+ * 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
*
- * 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.
+ * 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) 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/utils/create_iam.c
+ *
+ * User-level tool for creation of iam files.
+ *
+ * Author: Wang Di <wangdi@clusterfs.com>
+ * Author: Nikita Danilov <nikita@clusterfs.com>
*/
#include <unistd.h>
LVAR_ROUND = LVAR_PAD - 1
};
+/**
+ * Stores \a val at \a dst, where the latter is possibly unaligned. Uses
+ * memcpy(). This macro is needed to avoid dependency of user level tools on
+ * the kernel headers.
+ */
+#define STORE_UNALIGNED(val, dst) \
+({ \
+ typeof(val) __val = (val); \
+ \
+ CLASSERT(sizeof(val) == sizeof(*(dst))); \
+ memcpy(dst, &__val, sizeof(*(dst))); \
+})
+
static void lfix_root(void *buf,
int blocksize, int keysize, int ptrsize, int recsize)
{
entry += keysize;
/* now @entry points to <ptr> */
if (ptrsize == 4)
- *(u_int32_t *)entry = cpu_to_le32(1);
+ STORE_UNALIGNED(cpu_to_le32(1), (u_int32_t *)entry);
else
- *(u_int64_t *)entry = cpu_to_le64(1);
+ STORE_UNALIGNED(cpu_to_le64(1), (u_int64_t *)entry);
}
static void lfix_leaf(void *buf,
entry += sizeof(lvar_hash_t);
/* now @entry points to <ptr> */
if (ptrsize == 4)
- *(u_int32_t *)entry = cpu_to_le32(1);
+ STORE_UNALIGNED(cpu_to_le32(1), (u_int32_t *)entry);
else
- *(u_int64_t *)entry = cpu_to_le64(1);
+ STORE_UNALIGNED(cpu_to_le64(1), (u_int64_t *)entry);
}
static int lvar_esize(int namelen, int recsize)