From 31d1f8db15930774388d5ca798c6600fa8ededdf Mon Sep 17 00:00:00 2001 From: Alberto Bertogli Date: Mon, 15 Jun 2009 00:15:06 -0300 Subject: [PATCH 26/48] preload/posix: Seed the PRNG after initialization Because we use random() to choose from possible errnos, we want it to be properly seeded. Signed-off-by: Alberto Bertogli --- preload/posix/codegen.c | 17 +++++++++++++++++ 1 files changed, 17 insertions(+), 0 deletions(-) diff --git a/preload/posix/codegen.c b/preload/posix/codegen.c index 8a9c349..a267d1c 100644 --- a/preload/posix/codegen.c +++ b/preload/posix/codegen.c @@ -1,6 +1,7 @@ #include #include +#include #include "codegen.h" /* Dynamically load libc */ @@ -22,3 +23,19 @@ static void __attribute__((constructor(200))) _fiu_init(void) printd("done\n"); } +/* this runs after all function-specific constructors */ +static void __attribute__((constructor(250))) _fiu_init_final(void) +{ + struct timeval tv; + + rec_inc(); + + fiu_init(0); + + /* since we use random() in the wrappers, we need to seed it */ + gettimeofday(&tv, NULL); + srandom(tv.tv_usec); + + rec_dec(); +} + -- 1.6.2.2.646.gb214