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From: Michael Olbrich <m.olbrich@pengutronix.de>
Date: Sat, 1 Aug 2015 21:36:38 +0200
Subject: [PATCH] missing: define syncfs
This is required for glibc < 2.14
Upstream requires glibc 2.16 but this is useful for host-systemd.
Signed-off-by: Michael Olbrich <m.olbrich@pengutronix.de>
---
configure.ac | 1 +
src/basic/missing.h | 8 ++++++++
2 files changed, 9 insertions(+)
diff --git a/configure.ac b/configure.ac
index 35f96228f06a..00a68a7ea867 100644
--- a/configure.ac
+++ b/configure.ac
@@ -309,6 +309,7 @@ AC_CHECK_DECLS([
pivot_root,
name_to_handle_at,
setns,
+ syncfs,
getrandom,
renameat2,
kcmp,
diff --git a/src/basic/missing.h b/src/basic/missing.h
index 187b16757887..e67763c9b8ca 100644
--- a/src/basic/missing.h
+++ b/src/basic/missing.h
@@ -849,6 +849,14 @@ struct btrfs_ioctl_quota_ctl_args {
#define AT_EMPTY_PATH 0x1000 /* Allow empty relative pathname */
#endif
+#if !HAVE_DECL_SYNCFS
+static inline int syncfs(int fd)
+{
+ errno = ENOSYS;
+ return -1;
+}
+#endif
+
#ifndef IPV6_UNICAST_IF
#define IPV6_UNICAST_IF 76
#endif
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