diff options
| author | Eric Faurot <eric@cvs.openbsd.org> | 2015-06-04 19:26:40 +0000 |
|---|---|---|
| committer | Eric Faurot <eric@cvs.openbsd.org> | 2015-06-04 19:26:40 +0000 |
| commit | c0157819ef53872ec76be33bc35df11c11080859 (patch) | |
| tree | 9bb613b4c7445462b45bed4c73be0bba69178abd /lib | |
| parent | 4be050a03161e64b0d185e4c2491e5f0e14a979b (diff) | |
force reseeding if pid has changed.
ok deraadt@
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/libc/net/res_random.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/lib/libc/net/res_random.c b/lib/libc/net/res_random.c index f28692f7c2a..394072c8130 100644 --- a/lib/libc/net/res_random.c +++ b/lib/libc/net/res_random.c @@ -1,4 +1,4 @@ -/* $OpenBSD: res_random.c,v 1.21 2014/07/20 04:22:34 guenther Exp $ */ +/* $OpenBSD: res_random.c,v 1.22 2015/06/04 19:26:39 eric Exp $ */ /* * Copyright 1997 Niels Provos <provos@physnet.uni-hamburg.de> @@ -101,6 +101,7 @@ static u_int16_t ru_counter = 0; static u_int16_t ru_msb = 0; static struct prf_ctx *ru_prf = NULL; static time_t ru_reseed; +static pid_t ru_pid; static u_int16_t pmod(u_int16_t, u_int16_t, u_int16_t); static void res_initid(void); @@ -227,15 +228,19 @@ u_int res_randomid(void) { struct timespec ts; + pid_t pid; u_int r; _THREAD_PRIVATE_MUTEX(random); clock_gettime(CLOCK_MONOTONIC, &ts); + pid = getpid(); _THREAD_PRIVATE_MUTEX_LOCK(random); - if (ru_counter >= RU_MAX || ts.tv_sec > ru_reseed) + if (ru_counter >= RU_MAX || ts.tv_sec > ru_reseed || pid != ru_pid) { res_initid(); + ru_pid = pid; + } /* Linear Congruential Generator */ ru_x = (ru_a * ru_x + ru_b) % RU_M; |