From: Remi Gacogne <remi.gacogne@powerdns.com>
Date: Wed, 29 May 2019 14:05:25 +0000 (+0200)
Subject: Don't close the random device on EINTR
X-Git-Tag: dnsdist-1.4.0-beta1~8^2~1
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=b973ba4db6b82f446b2c28c3ac563f55a2c047e6;p=thirdparty%2Fpdns.git

Don't close the random device on EINTR
---

diff --git a/pdns/dns_random.cc b/pdns/dns_random.cc
index e2b8e45754..48b910c8f4 100644
--- a/pdns/dns_random.cc
+++ b/pdns/dns_random.cc
@@ -285,6 +285,10 @@ uint32_t dns_random(uint32_t upper_bound) {
       do {
         ssize_t got = read(urandom_fd, &num, sizeof(num));
         if (got < 0) {
+          if (errno == EINTR) {
+            continue;
+          }
+
           (void)close(urandom_fd);
           throw std::runtime_error("Cannot read random device");
         }