Date: Fri, 13 Sep 2002 15:53:20 +0400 From: dima <_pppp@mail.ru> To: freebsd-doc@freebsd.org Subject: urandom(4) Message-ID: <3D81D1B0.10801@mail.ru>
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man 4 urandom claims that there exists
void add_interrupt_randomness(int irq);
function to use the inter-interrupt timing as random input into the
"entropy pool". but
$ grep add_interrupt_randomness /usr/include/sys/*.h
says
/usr/include/sys/random.h:inthand2_t add_interrupt_randomness;
&
$ grep add_interrupt_randomness /sys/kern/*.c
/sys/kern/kern_random.c:add_interrupt_randomness(void *vsc)
rndcontrol(8) utility uses IOCTL on /dev/random to achieve the
functionality needed. so:
-- either
void add_interrupt_randomness(int irq) /*a very useful function*/
(as well as del_interrupt_randomness(int irq) probably)
should be added to the /sys/kern/kern_random.c
with appropriate exports to /usr/include/sys/random.h file;
-- or
man pages related to random should be fixed.
PS: the code needed could be derived from
/usr/src/usr.sbin/rndcontrol/rndcontrol.c; i'll check that out later.
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