LU-1818 quota: en/disable quota enforcement via conf_param

[fs/lustre-release.git] / lustre / utils / create_iam.c

diff --git a/lustre/utils/create_iam.c b/lustre/utils/create_iam.c
index 5268802..da5c0eb 100644 (file)
--- a/lustre/utils/create_iam.c
+++ b/lustre/utils/create_iam.c
@@ -1,30 +1,42 @@
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
+/*
+ * GPL HEADER START
  *
- *  create_iam.c
- *  User-level tool for creation of iam files.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
- *  Copyright (c) 2006 Cluster File Systems, Inc.
- *   Author: Wang Di <wangdi@clusterfs.com>
- *   Author: Nikita Danilov <nikita@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/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>
@@ -103,6 +115,19 @@ enum {
         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)
 {
@@ -144,9 +169,9 @@ static void lfix_root(void *buf,
         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,
@@ -208,9 +233,9 @@ static void lvar_root(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)