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From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Christoph Hellwig <hch@lst.de>,
	linux-kernel@vger.kernel.org,
	Masahiro Yamada <masahiroy@kernel.org>,
	Michal Marek <michal.lkml@markovi.net>,
	linux-kbuild@vger.kernel.org
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Subject: [PATCH v2 2/2] uuid: Make guid_t completely internal type to the kernel
Date: Fri, 30 Oct 2020 20:49:50 +0200	[thread overview]
Message-ID: <20201030184950.26732-2-andriy.shevchenko@linux.intel.com> (raw)
In-Reply-To: <20201030184950.26732-1-andriy.shevchenko@linux.intel.com>

The guid_t type was defined in UAPI by mistake.
Keep it an internal type and leave uuid_le UAPI
for it's only user, i.e. MEI.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
v2: converted uuid_le_cmp() to old type
 include/linux/uuid.h      | 20 ++++++++++++++++----
 include/uapi/linux/uuid.h | 14 +++++---------
 2 files changed, 21 insertions(+), 13 deletions(-)

diff --git a/include/linux/uuid.h b/include/linux/uuid.h
index 8cdc0d3567cd..5be158a49e11 100644
--- a/include/linux/uuid.h
+++ b/include/linux/uuid.h
@@ -8,15 +8,25 @@
 #ifndef _LINUX_UUID_H_
 #define _LINUX_UUID_H_
 
-#include <uapi/linux/uuid.h>
 #include <linux/string.h>
 
 #define UUID_SIZE 16
 
+typedef struct {
+	__u8 b[UUID_SIZE];
+} guid_t;
+
 typedef struct {
 	__u8 b[UUID_SIZE];
 } uuid_t;
 
+#define GUID_INIT(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7)			\
+((guid_t)								\
+{{ (a) & 0xff, ((a) >> 8) & 0xff, ((a) >> 16) & 0xff, ((a) >> 24) & 0xff, \
+   (b) & 0xff, ((b) >> 8) & 0xff,					\
+   (c) & 0xff, ((c) >> 8) & 0xff,					\
+   (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7) }})
+
 #define UUID_INIT(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7)			\
 ((uuid_t)								\
 {{ ((a) >> 24) & 0xff, ((a) >> 16) & 0xff, ((a) >> 8) & 0xff, (a) & 0xff, \
@@ -97,10 +107,12 @@ extern const u8 uuid_index[16];
 int guid_parse(const char *uuid, guid_t *u);
 int uuid_parse(const char *uuid, uuid_t *u);
 
-/* backwards compatibility, don't use in new code */
-static inline int uuid_le_cmp(const guid_t u1, const guid_t u2)
+/* MEI UUID type, don't use anywhere else */
+#include <uapi/linux/uuid.h>
+
+static inline int uuid_le_cmp(const uuid_le u1, const uuid_le u2)
 {
-	return memcmp(&u1, &u2, sizeof(guid_t));
+	return memcmp(&u1, &u2, sizeof(uuid_le));
 }
 
 #endif
diff --git a/include/uapi/linux/uuid.h b/include/uapi/linux/uuid.h
index e5a7eecef7c3..c3e175f686f4 100644
--- a/include/uapi/linux/uuid.h
+++ b/include/uapi/linux/uuid.h
@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
 /*
- * UUID/GUID definition
+ * MEI UUID definition
  *
  * Copyright (C) 2010, Intel Corp.
  *	Huang Ying <ying.huang@intel.com>
@@ -22,21 +22,17 @@
 
 typedef struct {
 	__u8 b[16];
-} guid_t;
+} uuid_le;
 
-#define GUID_INIT(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7)			\
-((guid_t)								\
+#define UUID_LE(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7)		\
+((uuid_le)								\
 {{ (a) & 0xff, ((a) >> 8) & 0xff, ((a) >> 16) & 0xff, ((a) >> 24) & 0xff, \
    (b) & 0xff, ((b) >> 8) & 0xff,					\
    (c) & 0xff, ((c) >> 8) & 0xff,					\
    (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7) }})
 
-/* backwards compatibility, don't use in new code */
-typedef guid_t uuid_le;
-#define UUID_LE(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7)		\
-	GUID_INIT(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7)
 #define NULL_UUID_LE							\
 	UUID_LE(0x00000000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00,	\
-	     0x00, 0x00, 0x00, 0x00)
+		0x00, 0x00, 0x00, 0x00)
 
 #endif /* _UAPI_LINUX_UUID_H_ */
-- 
2.28.0


  reply	other threads:[~2020-10-30 18:49 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-30 18:49 [PATCH v2 1/2] modpost: Mark uuid_le type only for MEI Andy Shevchenko
2020-10-30 18:49 ` Andy Shevchenko [this message]
2020-11-16 11:40   ` [PATCH v2 2/2] uuid: Make guid_t completely internal type to the kernel Andy Shevchenko
2020-11-24 13:39   ` Christoph Hellwig
2020-11-24 14:07     ` Andy Shevchenko
2020-11-24 14:38       ` Christoph Hellwig

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