From 4ba535616b8d3dfda7fbe162c6513f3008c1077a Mon Sep 17 00:00:00 2001
From: Thiago Macieira <thiago.macieira@intel.com>
Date: Wed, 7 Feb 2018 23:25:06 -0800
Subject: [PATCH] QSaveFile: Check for EINTR in fsync()/fdatasync()

[ChangeLog][QtCore][QSaveFile] Fixed an issue that would cause
QSaveFile::commit() to fail if Unix signals were delivered at the same
time.

Task-number: QTBUG-66268
Change-Id: I3debfc11127e4516b505fffd151148e70662cd5e
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
Reviewed-by: David Faure <david.faure@kdab.com>
---
 src/corelib/io/qfsfileengine_unix.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/corelib/io/qfsfileengine_unix.cpp b/src/corelib/io/qfsfileengine_unix.cpp
index c040d67862..e406fb4447 100644
--- a/src/corelib/io/qfsfileengine_unix.cpp
+++ b/src/corelib/io/qfsfileengine_unix.cpp
@@ -180,10 +180,11 @@ bool QFSFileEnginePrivate::nativeFlush()
 bool QFSFileEnginePrivate::nativeSyncToDisk()
 {
     Q_Q(QFSFileEngine);
+    int ret;
 #if defined(_POSIX_SYNCHRONIZED_IO) && _POSIX_SYNCHRONIZED_IO > 0
-    const int ret = fdatasync(nativeHandle());
+    EINTR_LOOP(ret, fdatasync(nativeHandle()));
 #else
-    const int ret = fsync(nativeHandle());
+    EINTR_LOOP(ret, fsync(nativeHandle()));
 #endif
     if (ret != 0)
         q->setError(QFile::WriteError, qt_error_string(errno));