Manual Pages  — UUID

The uuid_to_string() function set *str to be a pointer to a buffer sufficiently large to hold the string. This pointer should be passed to free(3) to release the allocated storage when it is no longer needed.

The uuid_enc_le() and uuid_enc_be() functions encode a binary representation of a UUID into an octet stream in little-endian and big-endian byte-order, respectively. The destination buffer must be pre-allocated by the caller, and must be large enough to hold the 16-octet binary UUID. These routines are not part of the DCE RPC API. They are provided for convenience.

The uuid_dec_le() and uuid_dec_be() functions decode a UUID from an octet stream in little-endian and big-endian byte-order, respectively. These routines are not part of the DCE RPC API. They are provided for convenience.

The uuid_compare() and uuid_equal() functions compare two UUIDs for equality. UUIDs are equal if pointers a and b are equal or both NULL, or if the structures a and b point to are equal. uuid_compare() returns 0 if the UUIDs are equal, -1 if a is less than b, and 1 if a is greater than b. uuid_equal() returns 1 if the UUIDs are equal, 0 if they are not equal.

The uuid_is_nil() function compares a UUID to NULL. The function returns 1 if u is NULL or if the UUID consists of all zeros, and zero otherwise.

The uuid_hash() function returns a 16-bit hash value for the specified UUID.