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[Qemu-commits] [COMMIT 5f6b9e8] Probe for fdatasync()
From: |
Anthony Liguori |
Subject: |
[Qemu-commits] [COMMIT 5f6b9e8] Probe for fdatasync() |
Date: |
Sun, 20 Sep 2009 07:06:42 -0000 |
From: Blue Swirl <address@hidden>
Signed-off-by: Blue Swirl <address@hidden>
diff --git a/configure b/configure
index d752009..62dccd2 100755
--- a/configure
+++ b/configure
@@ -1625,6 +1625,18 @@ if compile_prog "" "" ; then
need_offsetof=no
fi
+##########################################
+# check if we have fdatasync
+
+fdatasync=no
+cat > $TMPC << EOF
+#include <unistd.h>
+int main(void) { return fdatasync(0); }
+EOF
+if compile_prog "" "" ; then
+ fdatasync=yes
+fi
+
# End of CC checks
# After here, no more $cc or $ld runs
@@ -1738,6 +1750,7 @@ echo "Install blobs $blobs"
echo "KVM support $kvm"
echo "fdt support $fdt"
echo "preadv support $preadv"
+echo "fdatasync $fdatasync"
if test $sdl_too_old = "yes"; then
echo "-> Your SDL version is too old - please upgrade to have SDL support"
@@ -1928,6 +1941,9 @@ fi
if test "$need_offsetof" = "yes" ; then
echo "CONFIG_NEED_OFFSETOF=y" >> $config_host_mak
fi
+if test "$fdatasync" = "yes" ; then
+ echo "CONFIG_FDATASYNC=y" >> $config_host_mak
+fi
# XXX: suppress that
if [ "$bsd" = "yes" ] ; then
diff --git a/cutils.c b/cutils.c
index 7a22346..2365e68 100644
--- a/cutils.c
+++ b/cutils.c
@@ -124,7 +124,7 @@ int qemu_fls(int i)
*/
int qemu_fdatasync(int fd)
{
-#ifdef _POSIX_SYNCHRONIZED_IO
+#ifdef CONFIG_FDATASYNC
return fdatasync(fd);
#else
return fsync(fd);
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Anthony Liguori <=