diff options
| author | dan <dan@NetBSD.org> | 2002-10-07 02:38:41 +0000 |
|---|---|---|
| committer | dan <dan@NetBSD.org> | 2002-10-07 02:38:41 +0000 |
| commit | 168dbd282b47c2d33e1d36f5df31370337f2cf33 (patch) | |
| tree | 732454a65ec7aef428d2b3dbaf510c1ddc6e5dba /sys/dev | |
| parent | 99f05800ca0300302f74a72be0804276c88d381b (diff) | |
stir in something at initialisation
Diffstat (limited to 'sys/dev')
| -rw-r--r-- | sys/dev/rnd.c | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/sys/dev/rnd.c b/sys/dev/rnd.c index cf62f3a6095..407e68356f0 100644 --- a/sys/dev/rnd.c +++ b/sys/dev/rnd.c @@ -1,4 +1,4 @@ -/* $NetBSD: rnd.c,v 1.28 2002/09/06 13:18:43 gehenna Exp $ */ +/* $NetBSD: rnd.c,v 1.29 2002/10/07 02:38:41 dan Exp $ */ /*- * Copyright (c) 1997 The NetBSD Foundation, Inc. @@ -38,7 +38,7 @@ */ #include <sys/cdefs.h> -__KERNEL_RCSID(0, "$NetBSD: rnd.c,v 1.28 2002/09/06 13:18:43 gehenna Exp $"); +__KERNEL_RCSID(0, "$NetBSD: rnd.c,v 1.29 2002/10/07 02:38:41 dan Exp $"); #include <sys/param.h> #include <sys/ioctl.h> @@ -285,10 +285,17 @@ rndattach(int num) void rnd_init(void) { +#ifdef __HAVE_CPU_COUNTER + u_int32_t c; +#endif if (rnd_ready) return; +#ifdef __HAVE_CPU_COUNTER + c = rnd_counter(); +#endif + LIST_INIT(&rnd_sources); SIMPLEQ_INIT(&rnd_samples); @@ -297,6 +304,16 @@ rnd_init(void) rndpool_init(&rnd_pool); +#ifdef __HAVE_CPU_COUNTER + /* Mix *something*, *anything* into the pool to help it get started. + * However, it's not safe for rnd_counter to call microtime() yet, so + * we can only do this on platforms with a cpu counter. + * XXX more things to add would be nice. + */ + rndpool_add_data(&rnd_pool, &c, sizeof(u_int32_t), 0); + c = rnd_counter(); + rndpool_add_data(&rnd_pool, &c, sizeof(u_int32_t), 0); +#endif rnd_ready = 1; #ifdef RND_VERBOSE |
