uuid.h 1.3 KB

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  1. /* SPDX-License-Identifier: GPL-2.0+ */
  2. /*
  3. * Copyright (C) 2014 Samsung Electronics
  4. * Przemyslaw Marczak <p.marczak@samsung.com>
  5. */
  6. #ifndef __UUID_H__
  7. #define __UUID_H__
  8. #include <linux/bitops.h>
  9. /* This is structure is in big-endian */
  10. struct uuid {
  11. unsigned int time_low;
  12. unsigned short time_mid;
  13. unsigned short time_hi_and_version;
  14. unsigned char clock_seq_hi_and_reserved;
  15. unsigned char clock_seq_low;
  16. unsigned char node[6];
  17. } __packed;
  18. /* Bits of a bitmask specifying the output format for GUIDs */
  19. #define UUID_STR_FORMAT_STD 0
  20. #define UUID_STR_FORMAT_GUID BIT(0)
  21. #define UUID_STR_UPPER_CASE BIT(1)
  22. /* Use UUID_STR_LEN + 1 for string space */
  23. #define UUID_STR_LEN 36
  24. #define UUID_BIN_LEN sizeof(struct uuid)
  25. #define UUID_VERSION_MASK 0xf000
  26. #define UUID_VERSION_SHIFT 12
  27. #define UUID_VERSION 0x4
  28. #define UUID_VARIANT_MASK 0xc0
  29. #define UUID_VARIANT_SHIFT 7
  30. #define UUID_VARIANT 0x1
  31. int uuid_str_valid(const char *uuid);
  32. int uuid_str_to_bin(const char *uuid_str, unsigned char *uuid_bin,
  33. int str_format);
  34. void uuid_bin_to_str(const unsigned char *uuid_bin, char *uuid_str,
  35. int str_format);
  36. int uuid_guid_get_bin(const char *guid_str, unsigned char *guid_bin);
  37. const char *uuid_guid_get_str(const unsigned char *guid_bin);
  38. void gen_rand_uuid(unsigned char *uuid_bin);
  39. void gen_rand_uuid_str(char *uuid_str, int str_format);
  40. #endif