From 721ce839c7c49ecca90b66a4523be0e6e29c057e Mon Sep 17 00:00:00 2001 From: obrien Date: Mon, 29 Jul 2013 20:26:27 +0000 Subject: Decouple yarrow from random(4) device. * Make Yarrow an optional kernel component -- enabled by "YARROW_RNG" option. The files sha2.c, hash.c, randomdev_soft.c and yarrow.c comprise yarrow. * random(4) device doesn't really depend on rijndael-*. Yarrow, however, does. * Add random_adaptors.[ch] which is basically a store of random_adaptor's. random_adaptor is basically an adapter that plugs in to random(4). random_adaptor can only be plugged in to random(4) very early in bootup. Unplugging random_adaptor from random(4) is not supported, and is probably a bad idea anyway, due to potential loss of entropy pools. We currently have 3 random_adaptors: + yarrow + rdrand (ivy.c) + nehemeiah * Remove platform dependent logic from probe.c, and move it into corresponding registration routines of each random_adaptor provider. probe.c doesn't do anything other than picking a specific random_adaptor from a list of registered ones. * If the kernel doesn't have any random_adaptor adapters present then the creation of /dev/random is postponed until next random_adaptor is kldload'ed. * Fix randomdev_soft.c to refer to its own random_adaptor, instead of a system wide one. Submitted by: arthurmesh@gmail.com, obrien Obtained from: Juniper Networks Reviewed by: obrien --- sys/dev/random/randomdev_soft.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'sys/dev/random/randomdev_soft.h') diff --git a/sys/dev/random/randomdev_soft.h b/sys/dev/random/randomdev_soft.h index 489d45a..2007694 100644 --- a/sys/dev/random/randomdev_soft.h +++ b/sys/dev/random/randomdev_soft.h @@ -72,10 +72,10 @@ void random_process_event(struct harvest *event); void random_yarrow_reseed(void); void random_yarrow_unblock(void); -void random_yarrow_init_alg(struct sysctl_ctx_list *, struct sysctl_oid *); +void random_yarrow_init_alg(struct sysctl_ctx_list *); void random_yarrow_deinit_alg(void); -extern struct random_systat random_yarrow; +extern struct random_adaptor random_yarrow; extern struct mtx random_reseed_mtx; /* If this was c++, this would be a template */ -- cgit v1.1