err if buf NULL, len -1
also getrandom may return fewer bytes, so
loop that too.
why can't linux be like bsd? bsd is:
arc4random_buf(buf, len);
no checks needed. it never errs.
Signed-off-by: Leah Rowe <leah@libreboot.org>
openbsd 2.1 has arc4random, which we detect here.
arandom was apparently added much later, so this
is dead code. remove it.
Signed-off-by: Leah Rowe <leah@libreboot.org>
we still fall back to the old /dev/urandom read
on older linux, via runtime detection (ENOSYS).
getrandom is better, because it guarantees entropy
via blocking, and works even when /dev/urandom
is unavailable.
it has the same practical benefit as arc4random,
which i use on bsd. linux can have arc4random,
but not every linux libc has it, so it's better
to use getrandom on linux.
older linux will fall back to /dev/urandom
Signed-off-by: Leah Rowe <leah@libreboot.org>
more random characters
i added support for higher than the standard 6
characters so i can go nuts
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
Signed-off-by: Leah Rowe <leah@libreboot.org>
200 retries, not 100.
and open with O_NOFOLLOW and O_CLOEXEC
check X on mkstemp
support more than 6 X in mkstemp
make PATH_LEN 4096
1024 is a bit low
make default mkstemp length 4096
Signed-off-by: Leah Rowe <leah@libreboot.org>
i had this idea in my head of later porting this
to k&r c for fun. but screw it.
compiling on everything since 1989 is enough
Signed-off-by: Leah Rowe <leah@libreboot.org>
handle init in xstatus()
it's now a singleton design
also tidied up some other code
also removed todo.c. bloat.
will do all those anyway.
too much change. i just kept
touching the code until it
looked good
Signed-off-by: Leah Rowe <leah@libreboot.org>
Leah Rowe