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uuid: hoist helpers uuid_equal() and uuid_copy() from xfs

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These helper are used to compare and copy two uuid_t type objects.

Signed-off-by: Amir Goldstein <amir73il@gmail.com>
[hch: also provide the respective guid_ versions]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
This commit is contained in:
Christoph Hellwig
2017-05-11 14:00:57 +02:00
parent b10bf0e281
commit df33767d9f
4 changed files with 22 additions and 15 deletions
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20
include/linux/uuid.h
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@@ -35,6 +35,26 @@ typedef struct {
*/
#define UUID_STRING_LEN 36
static inline bool guid_equal(const guid_t *u1, const guid_t *u2)
{
return memcmp(u1, u2, sizeof(guid_t)) == 0;
}
static inline void guid_copy(guid_t *dst, const guid_t *src)
{
memcpy(dst, src, sizeof(guid_t));
}
static inline bool uuid_equal(const uuid_t *u1, const uuid_t *u2)
{
return memcmp(u1, u2, sizeof(uuid_t)) == 0;
}
static inline void uuid_copy(uuid_t *dst, const uuid_t *src)
{
memcpy(dst, src, sizeof(uuid_t));
}
void generate_random_uuid(unsigned char uuid[16]);
extern void guid_gen(guid_t *u);