From 94ce799f82a1d3b7453b1942016f91334c838b85 Mon Sep 17 00:00:00 2001
From: Pino Toscano <toscano.pino@tiscali.it>
Date: Mon, 29 Oct 2012 19:35:56 +0100
Subject: Hurd: fix fdatasync/fsync if the fd does not support file_sync

Handle the case of the fd port implementing a stub (EOPNOTSUPP),
properly returning EINVAL.
---
 sysdeps/mach/hurd/fdatasync.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

(limited to 'sysdeps/mach/hurd/fdatasync.c')

diff --git a/sysdeps/mach/hurd/fdatasync.c b/sysdeps/mach/hurd/fdatasync.c
index 19d7a4a58a..22c1d103d4 100644
--- a/sysdeps/mach/hurd/fdatasync.c
+++ b/sysdeps/mach/hurd/fdatasync.c
@@ -26,6 +26,12 @@ fdatasync (int fd)
 {
   error_t err = HURD_DPORT_USE (fd, __file_sync (port, 1, 1));
   if (err)
-    return __hurd_dfail (fd, err);
+    {
+      if (err == EOPNOTSUPP)
+	/* If the file descriptor does not support sync, return EINVAL
+	   as POSIX specifies.  */
+	err = EINVAL;
+      return __hurd_dfail (fd, err);
+    }
   return 0;
 }
-- 
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