From 9f0beedd556daabd2ef48e05ead3fdab68598d2a Mon Sep 17 00:00:00 2001
From: Dmitry Antipov <dmantipov@yandex.ru>
Date: Mon, 22 Jun 2020 16:43:26 +0300
Subject: storage/posix, libglusterfs: library function to sync filesystem

Convert an ad-hoc hack to a regular library function gf_syncfs().

Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru>
Change-Id: I3ed93e9f28f22c273df1466ba4a458eacb8df395
Fixes: #1329
---
 libglusterfs/src/common-utils.c | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

(limited to 'libglusterfs/src/common-utils.c')

diff --git a/libglusterfs/src/common-utils.c b/libglusterfs/src/common-utils.c
index 899d579e837..81c39959406 100644
--- a/libglusterfs/src/common-utils.c
+++ b/libglusterfs/src/common-utils.c
@@ -37,6 +37,9 @@
 #ifndef GF_LINUX_HOST_OS
 #include <sys/resource.h>
 #endif
+#ifdef HAVE_SYNCFS_SYS
+#include <sys/syscall.h>
+#endif
 
 #include "glusterfs/compat-errno.h"
 #include "glusterfs/common-utils.h"
@@ -5412,3 +5415,20 @@ gf_nanosleep(uint64_t nsec)
 
     return ret;
 }
+
+int
+gf_syncfs(int fd)
+{
+    int ret = 0;
+#if defined(HAVE_SYNCFS)
+    /* Linux with glibc recent enough. */
+    ret = syncfs(fd);
+#elif defined(HAVE_SYNCFS_SYS)
+    /* Linux with no library function. */
+    ret = syscall(SYS_syncfs, fd);
+#else
+    /* Fallback to generic UNIX stuff. */
+    sync();
+#endif
+    return ret;
+}
-- 
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