From 028c0cc16e429ae24d9b8aacc64f4438bdfac0cc Mon Sep 17 00:00:00 2001
From: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Date: Sun, 9 Oct 2005 21:37:45 +0200
Subject: [PATCH] [PATCH] uml: cleanup byte order macros for COW driver

After restoring the existing code, make it work also when included in
kernelspace code (which isn't currently the case, but at least this will prevent
people from "fixing" it as just happened).
Whitespace is fixed in next patch - it cluttered the diff too much.

Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 arch/um/drivers/cow.h      | 27 ++++++++++++++++++++++++++-
 arch/um/drivers/cow_user.c |  1 -
 2 files changed, 26 insertions(+), 2 deletions(-)

diff --git a/arch/um/drivers/cow.h b/arch/um/drivers/cow.h
index 4fcbe8b1b7..c54e20a3d2 100644
--- a/arch/um/drivers/cow.h
+++ b/arch/um/drivers/cow.h
@@ -3,6 +3,26 @@
 
 #include <asm/types.h>
 
+#if defined(__KERNEL__)
+
+# include <asm/byteorder.h>
+
+# if defined(__BIG_ENDIAN)
+#	define ntohll(x) (x)
+#	define htonll(x) (x)
+# elif defined(__LITTLE_ENDIAN)
+#	define ntohll(x)  be64_to_cpu(x)
+#	define htonll(x)  cpu_to_be64(x)
+# else
+#	error "Could not determine byte order"
+# endif
+
+#else
+/* For the definition of ntohl, htonl and __BYTE_ORDER */
+#include <endian.h>
+#include <netinet/in.h>
+#if defined(__BYTE_ORDER)
+
 #if __BYTE_ORDER == __BIG_ENDIAN
 # define ntohll(x) (x)
 # define htonll(x) (x)
@@ -10,8 +30,13 @@
 # define ntohll(x)  bswap_64(x)
 # define htonll(x)  bswap_64(x)
 #else
-#error "__BYTE_ORDER not defined"
+# error "Could not determine byte order: __BYTE_ORDER uncorrectly defined"
+#endif
+
+#else  /* ! defined(__BYTE_ORDER) */
+#	error "Could not determine byte order: __BYTE_ORDER not defined"
 #endif
+#endif /* ! defined(__KERNEL__) */
 
 extern int init_cow_file(int fd, char *cow_file, char *backing_file,
 			 int sectorsize, int alignment, int *bitmap_offset_out,
diff --git a/arch/um/drivers/cow_user.c b/arch/um/drivers/cow_user.c
index a8ce6fc3ef..fbe2217db5 100644
--- a/arch/um/drivers/cow_user.c
+++ b/arch/um/drivers/cow_user.c
@@ -9,7 +9,6 @@
 #include <sys/time.h>
 #include <sys/param.h>
 #include <sys/user.h>
-#include <netinet/in.h>
 
 #include "os.h"
 
-- 
2.39.5