Manpages - sd_id128_randomize.3

sd_id128_randomize - Generate 128-bit IDs

  #include <systemd/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 /dev/urandom 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).

systemd-id128*(1)s *new command may be used as a command line front-end for sd_id128_randomize().

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

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

*systemd*(1), *sd-id128*(3), *machine-id*(5), *random*(4), *sd_id128_get_machine*(3)