From 76ace254e171ee9ca7a13f36335ccad9cc6ae6e1 Mon Sep 17 00:00:00 2001 From: Denys Vlasenko Date: Mon, 12 Oct 2009 15:25:01 +0200 Subject: ash,hush: fix $RANDOM in children being repeated function old new delta next_random 46 68 +22 forkshell 248 263 +15 expand_vars_to_list 2118 2131 +13 run_pipe 1775 1782 +7 popstring 134 140 +6 builtin_umask 123 121 -2 ash_main 1356 1336 -20 get_local_var_value 125 104 -21 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 5/3 up/down: 63/-43) Total: 20 bytes Signed-off-by: Denys Vlasenko --- shell/random.c | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'shell/random.c') diff --git a/shell/random.c b/shell/random.c index cca9d120d..7f5821cbc 100644 --- a/shell/random.c +++ b/shell/random.c @@ -20,6 +20,13 @@ next_random(random_t *rnd) uint32_t t; + if (UNINITED_RANDOM_T(rnd)) { + /* Can use monotonic_ns() for better randomness but for now + * it is not used anywhere else in busybox... so avoid bloat + */ + INIT_RANDOM_T(rnd, getpid(), monotonic_us()); + } + /* LCG has period of 2^32 and alternating lowest bit */ rnd->LCG = 1664525 * rnd->LCG + 1013904223; /* Galois LFSR has period of 2^32-1 = 3 * 5 * 17 * 257 * 65537 */ -- cgit v1.2.3