From 1744329bcba4a3e1a82cec3b1a34b3fbf0a9d7cf Mon Sep 17 00:00:00 2001
From: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
Date: Mon, 27 Jan 2020 19:01:54 +0100
Subject: [PATCH 083/116] virtiofsd: support nanosecond resolution for file
 timestamp
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RH-Author: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-id: <20200127190227.40942-80-dgilbert@redhat.com>
Patchwork-id: 93535
O-Subject: [RHEL-AV-8.2 qemu-kvm PATCH 079/112] virtiofsd: support nanosecond resolution for file timestamp
Bugzilla: 1694164
RH-Acked-by: Philippe Mathieu-Daudé <philmd@redhat.com>
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
RH-Acked-by: Sergio Lopez Pascual <slp@redhat.com>

From: Jiufei Xue <jiufei.xue@linux.alibaba.com>

Define HAVE_STRUCT_STAT_ST_ATIM to 1 if `st_atim' is member of `struct
stat' which means support nanosecond resolution for the file timestamp
fields.

Signed-off-by: Jiufei Xue <jiufei.xue@linux.alibaba.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
(cherry picked from commit 8a792b034d4b315251fd842bb4c73a133aa1368f)
Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
---
 configure                   | 16 ++++++++++++++++
 tools/virtiofsd/fuse_misc.h |  1 +
 2 files changed, 17 insertions(+)

diff --git a/configure b/configure
index 7831618..5120c14 100755
--- a/configure
+++ b/configure
@@ -5218,6 +5218,19 @@ if compile_prog "" "" ; then
     strchrnul=yes
 fi
 
+#########################################
+# check if we have st_atim
+
+st_atim=no
+cat > $TMPC << EOF
+#include <sys/stat.h>
+#include <stddef.h>
+int main(void) { return offsetof(struct stat, st_atim); }
+EOF
+if compile_prog "" "" ; then
+    st_atim=yes
+fi
+
 ##########################################
 # check if trace backend exists
 
@@ -6919,6 +6932,9 @@ fi
 if test "$strchrnul" = "yes" ; then
   echo "HAVE_STRCHRNUL=y" >> $config_host_mak
 fi
+if test "$st_atim" = "yes" ; then
+  echo "HAVE_STRUCT_STAT_ST_ATIM=y" >> $config_host_mak
+fi
 if test "$byteswap_h" = "yes" ; then
   echo "CONFIG_BYTESWAP_H=y" >> $config_host_mak
 fi
diff --git a/tools/virtiofsd/fuse_misc.h b/tools/virtiofsd/fuse_misc.h
index f252baa..5c618ce 100644
--- a/tools/virtiofsd/fuse_misc.h
+++ b/tools/virtiofsd/fuse_misc.h
@@ -7,6 +7,7 @@
  */
 
 #include <pthread.h>
+#include "config-host.h"
 
 /*
  * Versioned symbols cannot be used in some cases because it
-- 
1.8.3.1

