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uuid: rename uuid types

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Our "little endian" UUID really is a Wintel GUID, so rename it and its
helpers such (guid_t).  The big endian UUID is the only true one, so
give it the name uuid_t.  The uuid_le and uuid_be names are retained for
now, but will hopefully go away soon.  The exception to that are the _cmp
helpers that will be replaced by better primitives ASAP and thus don't
get the new names.

Also the _to_bin helpers are named to match the better named uuid_parse
routine in userspace.

Also remove the existing typedef in XFS that's now been superceeded by
the generic type name.

Signed-off-by: Christoph Hellwig <hch@lst.de>
[andy: also update the UUID_LE/UUID_BE macros including fallout]
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Christoph Hellwig 2017-05-17 10:02:48 +02:00
parent 60927bc314
commit f9727a17db
6 changed files with 73 additions and 62 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
fs/xfs/xfs_linux.h
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@ -39,8 +39,6 @@ typedef __s64 xfs_daddr_t; /* <disk address> type */
typedef __u32 xfs_dev_t;
typedef __u32 xfs_nlink_t;
typedef uuid_be uuid_t;
#include "xfs_types.h"
#include "kmem.h"

55
include/linux/uuid.h
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@ -20,46 +20,55 @@
typedef struct {
__u8 b[16];
} uuid_be;
} uuid_t;
#define UUID_BE(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7) \
((uuid_be) \
#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, \
((b) >> 8) & 0xff, (b) & 0xff, \
((c) >> 8) & 0xff, (c) & 0xff, \
(d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7) }})
#define NULL_UUID_BE \
UUID_BE(0x00000000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, \
0x00, 0x00, 0x00, 0x00)
/*
* The length of a UUID string ("aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee")
* not including trailing NUL.
*/
#define UUID_STRING_LEN 36
static inline int uuid_le_cmp(const uuid_le u1, const uuid_le u2)
{
return memcmp(&u1, &u2, sizeof(uuid_le));
}
static inline int uuid_be_cmp(const uuid_be u1, const uuid_be u2)
{
return memcmp(&u1, &u2, sizeof(uuid_be));
}
void generate_random_uuid(unsigned char uuid[16]);
extern void uuid_le_gen(uuid_le *u);
extern void uuid_be_gen(uuid_be *u);
extern void guid_gen(guid_t *u);
extern void uuid_gen(uuid_t *u);
bool __must_check uuid_is_valid(const char *uuid);
extern const u8 uuid_le_index[16];
extern const u8 uuid_be_index[16];
extern const u8 guid_index[16];
extern const u8 uuid_index[16];
int uuid_le_to_bin(const char *uuid, uuid_le *u);
int uuid_be_to_bin(const char *uuid, uuid_be *u);
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 */
typedef uuid_t uuid_be;
#define UUID_BE(a, _b, c, d0, d1, d2, d3, d4, d5, d6, d7) \
UUID_INIT(a, _b, c, d0, d1, d2, d3, d4, d5, d6, d7)
#define NULL_UUID_BE \
UUID_BE(0x00000000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, \
0x00, 0x00, 0x00, 0x00)
#define uuid_le_gen(u) guid_gen(u)
#define uuid_be_gen(u) uuid_gen(u)
#define uuid_le_to_bin(guid, u) guid_parse(guid, u)
#define uuid_be_to_bin(uuid, u) uuid_parse(uuid, u)
static inline int uuid_le_cmp(const guid_t u1, const guid_t u2)
{
return memcmp(&u1, &u2, sizeof(guid_t));
}
static inline int uuid_be_cmp(const uuid_t u1, const uuid_t u2)
{
return memcmp(&u1, &u2, sizeof(uuid_t));
}
#endif

12
include/uapi/linux/uuid.h
View File

@ -22,17 +22,21 @@
typedef struct {
__u8 b[16];
} uuid_le;
} guid_t;
#define UUID_LE(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7) \
((uuid_le) \
#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) }})
/* 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_ */

32
lib/test_uuid.c
View File

@ -11,25 +11,25 @@
struct test_uuid_data {
const char *uuid;
uuid_le le;
uuid_be be;
guid_t le;
uuid_t be;
};
static const struct test_uuid_data test_uuid_test_data[] = {
{
.uuid = "c33f4995-3701-450e-9fbf-206a2e98e576",
.le = UUID_LE(0xc33f4995, 0x3701, 0x450e, 0x9f, 0xbf, 0x20, 0x6a, 0x2e, 0x98, 0xe5, 0x76),
.be = UUID_BE(0xc33f4995, 0x3701, 0x450e, 0x9f, 0xbf, 0x20, 0x6a, 0x2e, 0x98, 0xe5, 0x76),
.le = GUID_INIT(0xc33f4995, 0x3701, 0x450e, 0x9f, 0xbf, 0x20, 0x6a, 0x2e, 0x98, 0xe5, 0x76),
.be = UUID_INIT(0xc33f4995, 0x3701, 0x450e, 0x9f, 0xbf, 0x20, 0x6a, 0x2e, 0x98, 0xe5, 0x76),
},
{
.uuid = "64b4371c-77c1-48f9-8221-29f054fc023b",
.le = UUID_LE(0x64b4371c, 0x77c1, 0x48f9, 0x82, 0x21, 0x29, 0xf0, 0x54, 0xfc, 0x02, 0x3b),
.be = UUID_BE(0x64b4371c, 0x77c1, 0x48f9, 0x82, 0x21, 0x29, 0xf0, 0x54, 0xfc, 0x02, 0x3b),
.le = GUID_INIT(0x64b4371c, 0x77c1, 0x48f9, 0x82, 0x21, 0x29, 0xf0, 0x54, 0xfc, 0x02, 0x3b),
.be = UUID_INIT(0x64b4371c, 0x77c1, 0x48f9, 0x82, 0x21, 0x29, 0xf0, 0x54, 0xfc, 0x02, 0x3b),
},
{
.uuid = "0cb4ddff-a545-4401-9d06-688af53e7f84",
.le = UUID_LE(0x0cb4ddff, 0xa545, 0x4401, 0x9d, 0x06, 0x68, 0x8a, 0xf5, 0x3e, 0x7f, 0x84),
.be = UUID_BE(0x0cb4ddff, 0xa545, 0x4401, 0x9d, 0x06, 0x68, 0x8a, 0xf5, 0x3e, 0x7f, 0x84),
.le = GUID_INIT(0x0cb4ddff, 0xa545, 0x4401, 0x9d, 0x06, 0x68, 0x8a, 0xf5, 0x3e, 0x7f, 0x84),
.be = UUID_INIT(0x0cb4ddff, 0xa545, 0x4401, 0x9d, 0x06, 0x68, 0x8a, 0xf5, 0x3e, 0x7f, 0x84),
},
};
@ -61,13 +61,13 @@ static void __init test_uuid_failed(const char *prefix, bool wrong, bool be,
static void __init test_uuid_test(const struct test_uuid_data *data)
{
uuid_le le;
uuid_be be;
guid_t le;
uuid_t be;
char buf[48];
/* LE */
total_tests++;
if (uuid_le_to_bin(data->uuid, &le))
if (guid_parse(data->uuid, &le))
test_uuid_failed("conversion", false, false, data->uuid, NULL);
total_tests++;
@ -78,7 +78,7 @@ static void __init test_uuid_test(const struct test_uuid_data *data)
/* BE */
total_tests++;
if (uuid_be_to_bin(data->uuid, &be))
if (uuid_parse(data->uuid, &be))
test_uuid_failed("conversion", false, true, data->uuid, NULL);
total_tests++;
@ -90,17 +90,17 @@ static void __init test_uuid_test(const struct test_uuid_data *data)
static void __init test_uuid_wrong(const char *data)
{
uuid_le le;
uuid_be be;
guid_t le;
uuid_t be;
/* LE */
total_tests++;
if (!uuid_le_to_bin(data, &le))
if (!guid_parse(data, &le))
test_uuid_failed("negative", true, false, data, NULL);
/* BE */
total_tests++;
if (!uuid_be_to_bin(data, &be))
if (!uuid_parse(data, &be))
test_uuid_failed("negative", true, true, data, NULL);
}

30
lib/uuid.c
View File

@ -21,10 +21,10 @@
#include <linux/uuid.h>
#include <linux/random.h>
const u8 uuid_le_index[16] = {3,2,1,0,5,4,7,6,8,9,10,11,12,13,14,15};
EXPORT_SYMBOL(uuid_le_index);
const u8 uuid_be_index[16] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15};
EXPORT_SYMBOL(uuid_be_index);
const u8 guid_index[16] = {3,2,1,0,5,4,7,6,8,9,10,11,12,13,14,15};
EXPORT_SYMBOL(guid_index);
const u8 uuid_index[16] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15};
EXPORT_SYMBOL(uuid_index);
/***************************************************************
* Random UUID interface
@ -53,21 +53,21 @@ static void __uuid_gen_common(__u8 b[16])
b[8] = (b[8] & 0x3F) | 0x80;
}
void uuid_le_gen(uuid_le *lu)
void guid_gen(guid_t *lu)
{
__uuid_gen_common(lu->b);
/* version 4 : random generation */
lu->b[7] = (lu->b[7] & 0x0F) | 0x40;
}
EXPORT_SYMBOL_GPL(uuid_le_gen);
EXPORT_SYMBOL_GPL(guid_gen);
void uuid_be_gen(uuid_be *bu)
void uuid_gen(uuid_t *bu)
{
__uuid_gen_common(bu->b);
/* version 4 : random generation */
bu->b[6] = (bu->b[6] & 0x0F) | 0x40;
}
EXPORT_SYMBOL_GPL(uuid_be_gen);
EXPORT_SYMBOL_GPL(uuid_gen);
/**
* uuid_is_valid - checks if UUID string valid
@ -97,7 +97,7 @@ bool uuid_is_valid(const char *uuid)
}
EXPORT_SYMBOL(uuid_is_valid);
static int __uuid_to_bin(const char *uuid, __u8 b[16], const u8 ei[16])
static int __uuid_parse(const char *uuid, __u8 b[16], const u8 ei[16])
{
static const u8 si[16] = {0,2,4,6,9,11,14,16,19,21,24,26,28,30,32,34};
unsigned int i;
@ -115,14 +115,14 @@ static int __uuid_to_bin(const char *uuid, __u8 b[16], const u8 ei[16])
return 0;
}
int uuid_le_to_bin(const char *uuid, uuid_le *u)
int guid_parse(const char *uuid, guid_t *u)
{
return __uuid_to_bin(uuid, u->b, uuid_le_index);
return __uuid_parse(uuid, u->b, guid_index);
}
EXPORT_SYMBOL(uuid_le_to_bin);
EXPORT_SYMBOL(guid_parse);
int uuid_be_to_bin(const char *uuid, uuid_be *u)
int uuid_parse(const char *uuid, uuid_t *u)
{
return __uuid_to_bin(uuid, u->b, uuid_be_index);
return __uuid_parse(uuid, u->b, uuid_index);
}
EXPORT_SYMBOL(uuid_be_to_bin);
EXPORT_SYMBOL(uuid_parse);

4
lib/vsprintf.c
View File

@ -1308,14 +1308,14 @@ char *uuid_string(char *buf, char *end, const u8 *addr,
char uuid[UUID_STRING_LEN + 1];
char *p = uuid;
int i;
const u8 *index = uuid_be_index;
const u8 *index = uuid_index;
bool uc = false;
switch (*(++fmt)) {
case 'L':
uc = true; /* fall-through */
case 'l':
index = uuid_le_index;
index = guid_index;
break;
case 'B':
uc = true;