• Linus Torvalds's avatar
    Merge tag 'random_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random · 52f6c588
    Linus Torvalds authored
    Pull random updates from Ted Ts'o:
     "Add wait_for_random_bytes() and get_random_*_wait() functions so that
      callers can more safely get random bytes if they can block until the
      CRNG is initialized.
    
      Also print a warning if get_random_*() is called before the CRNG is
      initialized. By default, only one single-line warning will be printed
      per boot. If CONFIG_WARN_ALL_UNSEEDED_RANDOM is defined, then a
      warning will be printed for each function which tries to get random
      bytes before the CRNG is initialized. This can get spammy for certain
      architecture types, so it is not enabled by default"
    
    * tag 'random_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random:
      random: reorder READ_ONCE() in get_random_uXX
      random: suppress spammy warnings about unseeded randomness
      random: warn when kernel uses unseeded randomness
      net/route: use get_random_int for random counter
      net/neighbor: use get_random_u32 for 32-bit hash random
      rhashtable: use get_random_u32 for hash_rnd
      ceph: ensure RNG is seeded before using
      iscsi: ensure RNG is seeded before use
      cifs: use get_random_u32 for 32-bit lock random
      random: add get_random_{bytes,u32,u64,int,long,once}_wait family
      random: add wait_for_random_bytes() API
    52f6c588
random.h 5.03 KB