60 lines
1.7 KiB
Diff
60 lines
1.7 KiB
Diff
From 58cdc09af08e065c85b2f8834ee9848c010f5afe Mon Sep 17 00:00:00 2001
|
|
From: Yu Watanabe <watanabe.yu+github@gmail.com>
|
|
Date: Mon, 16 Dec 2019 19:47:48 +0900
|
|
Subject: [PATCH] random-util: call initialize_srand() after fork()
|
|
|
|
(cherry picked from commit a0f11d1d11a546f791855ec9c47c2ff830e6a5aa)
|
|
|
|
Related: #2005008
|
|
---
|
|
src/basic/random-util.c | 14 +++++++++++++-
|
|
1 file changed, 13 insertions(+), 1 deletion(-)
|
|
|
|
diff --git a/src/basic/random-util.c b/src/basic/random-util.c
|
|
index 91481559db..801f6ad131 100644
|
|
--- a/src/basic/random-util.c
|
|
+++ b/src/basic/random-util.c
|
|
@@ -4,6 +4,7 @@
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
#include <linux/random.h>
|
|
+#include <pthread.h>
|
|
#include <stdbool.h>
|
|
#include <stdint.h>
|
|
#include <stdlib.h>
|
|
@@ -26,6 +27,8 @@
|
|
#include "random-util.h"
|
|
#include "time-util.h"
|
|
|
|
+static bool srand_called = false;
|
|
+
|
|
int acquire_random_bytes(void *p, size_t n, bool high_quality_required) {
|
|
static int have_syscall = -1;
|
|
|
|
@@ -81,8 +84,12 @@ int acquire_random_bytes(void *p, size_t n, bool high_quality_required) {
|
|
return loop_read_exact(fd, (uint8_t*) p + already_done, n - already_done, true);
|
|
}
|
|
|
|
+static void clear_srand_initialization(void) {
|
|
+ srand_called = false;
|
|
+}
|
|
+
|
|
void initialize_srand(void) {
|
|
- static bool srand_called = false;
|
|
+ static bool pthread_atfork_registered = false;
|
|
unsigned x;
|
|
#if HAVE_SYS_AUXV_H
|
|
void *auxv;
|
|
@@ -109,6 +116,11 @@ void initialize_srand(void) {
|
|
|
|
srand(x);
|
|
srand_called = true;
|
|
+
|
|
+ if (!pthread_atfork_registered) {
|
|
+ (void) pthread_atfork(NULL, NULL, clear_srand_initialization);
|
|
+ pthread_atfork_registered = true;
|
|
+ }
|
|
}
|
|
|
|
/* INT_MAX gives us only 31 bits, so use 24 out of that. */
|