From: Kefu Chai <kchai@redhat.com>
Date: Wed, 23 Nov 2016 05:26:31 +0000 (+0800)
Subject: global/signal_handler: retry if read() returns with EINTR
X-Git-Tag: v11.1.0~139^2~5
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=1f0abeffa76db1e4a7835153c9a299e89622e2ac;p=ceph.git

global/signal_handler: retry if read() returns with EINTR

this silences the warning of

Value stored to 'r' is never used.

Signed-off-by: Kefu Chai <kchai@redhat.com>
---

diff --git a/src/global/signal_handler.cc b/src/global/signal_handler.cc
index f465b402d56c..01732cce4480 100644
--- a/src/global/signal_handler.cc
+++ b/src/global/signal_handler.cc
@@ -281,7 +281,7 @@ struct SignalHandler : public Thread {
 	char v;
 
 	// consume byte from signal socket, if any.
-	r = read(pipefd[0], &v, 1);
+	TEMP_FAILURE_RETRY(read(pipefd[0], &v, 1));
 
 	lock.Lock();
 	for (unsigned signum=0; signum<32; signum++) {