sd_id128_randomize - Generate 128-bit IDs

NAME SYNOPSIS DESCRIPTION RETURN VALUE NOTES SEE ALSO

NAME

sd_id128_randomize − Generate 128−bit IDs

SYNOPSIS

#include <elogind/sd−id128.h>

int sd_id128_randomize(sd_id128_t *ret);

sd_id128_randomize() generates a new randomized 128−bit ID and returns it in ret. Every invocation returns a new randomly generated ID. This uses the getrandom(2) kernel random number generator.

Note that sd_id128_randomize() always returns a UUID Variant 1 Version 4 compatible ID. It is hence guaranteed that this function will never return the ID consisting of all zero or all one bits (SD_ID128_NULL, SD_ID128_ALLF).

For more information about the sd_id128_t type, see sd-id128(3).

elogind-id128(1)'s new command may be used as a command line front−end for sd_id128_randomize().

RETURN VALUE

The call returns 0 on success (in which case ret is filled in), or a negative errno−style error code.

NOTES

These APIs are implemented as a shared library, which can be compiled and linked to with the libelogind pkg-config(1) file.