xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

random: re-add removed comment about get_random_{u32,u64} reseeding

Browse Source 
commit dd7aa36e535797926d8eb311da7151919130139d upstream.

The comment about get_random_{u32,u64}() not invoking reseeding got
added in an unrelated commit, that then was recently reverted by
0313bc278dac ("Revert "random: block in /dev/urandom""). So this adds
that little comment snippet back, and improves the wording a bit too.

Reviewed-by: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jason A. Donenfeld
2022-03-22 22:21:52 -06:00
committed by Greg Kroah-Hartman
parent f3bc5eca83
commit bb563d06c5
1 changed files with 4 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/char/random.c
View File

@@ -226,9 +226,10 @@ static void _warn_unseeded_randomness(const char *func_name, void *caller, void
* *
* These interfaces will return the requested number of random bytes * These interfaces will return the requested number of random bytes
* into the given buffer or as a return value. This is equivalent to * into the given buffer or as a return value. This is equivalent to
* a read from /dev/urandom. The integer family of functions may be * a read from /dev/urandom. The u32, u64, int, and long family of
* higher performance for one-off random integers, because they do a * functions may be higher performance for one-off random integers,
* bit of buffering. * because they do a bit of buffering and do not invoke reseeding
* until the buffer is emptied.
* *
*********************************************************************/ *********************************************************************/