From: Neil Brown <neilb@suse.de>
Date: Fri, 2 Jun 2006 01:49:00 +0000 (+0000)
Subject: Finally (I hope) get byteorder stuff portable.
X-Git-Tag: mdadm-2.5.1~13
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=efd441d17b5a6cfab37b60154492aa81c24b7db2;p=thirdparty%2Fmdadm.git

Finally (I hope) get byteorder stuff portable.

/usr/include/endian.h and /usr/include/byteswap.h together
can give us almost what we need...

Signed-off-by: Neil Brown <neilb@suse.de>
---

diff --git a/mdadm.h b/mdadm.h
index 848c6f1a..b7ae9671 100644
--- a/mdadm.h
+++ b/mdadm.h
@@ -73,13 +73,24 @@ extern __off64_t lseek64 __P ((int __fd, __off64_t __offset, int __whence));
 #include	"bitmap.h"
 
 #include <endian.h>
-/* #include "asm/byteorder.h" Redhat don't like this so... */
-#if __BYTE_ORDER == __LITTLE_ENDIAN
-#  include <linux/byteorder/little_endian.h>
-#elif __BYTE_ORDER == __BIG_ENDIAN
-#  include <linux/byteorder/big_endian.h>
-#elif __BYTE_ORDER == __PDP_ENDIAN
-#  include <linux/byteorder/pdp_endian.h>
+#include <byteswap.h>
+/* Redhat don't like to #include <asm/byteorder.h>, and
+ * some time include <linux/byteorder/xxx_endian.h> isn't enough,
+ * and there is no standard conversion function so... */
+#if BYTE_ORDER == LITTLE_ENDIAN
+#define	__cpu_to_le16(_x) (_x)
+#define __cpu_to_le32(_x) (_x)
+#define __cpu_to_le64(_x) (_x)
+#define	__le16_to_cpu(_x) (_x)
+#define __le32_to_cpu(_x) (_x)
+#define __le64_to_cpu(_x) (_x)
+#elif BYTE_ORDER == BIG_ENDIAN
+#define	__cpu_to_le16(_x) bswap_16(_x)
+#define __cpu_to_le32(_x) bswap_32(_x)
+#define __cpu_to_le64(_x) bswap_64(_x)
+#define	__le16_to_cpu(_x) bswap_16(_x)
+#define __le32_to_cpu(_x) bswap_32(_x)
+#define __le64_to_cpu(_x) bswap_64(_x)
 #else
 #  error "unknown endianness."
 #endif