CVS commit: src/sbin/rndctl

["Taylor R Campbell" <riastradh%netbsd.org@localhost>]

Module Name:    src
Committed By:   riastradh
Date:           Thu May  7 19:12:45 UTC 2020

Modified Files:
        src/sbin/rndctl: rndctl.c

Log Message:
Rework rndctl seed load sequence again.

Go back to the book's order, now that writing to /dev/random
guarantees to consolidate entropy -- this way the _next_ boot is no
less secure than the current boot, in the event that entropy sources
like interrupt timings provided any security that we just don't know
how to measure honestly.

Make sure to open the old seed to overwrite and the new seed to write
anew first so that we can determine whether the medium is read-only
before accepting the file's entropy estimate.


To generate a diff of this commit:
cvs rdiff -u -r1.34 -r1.35 src/sbin/rndctl/rndctl.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.