- djm@cvs.openbsd.org 2013/10/17 00:30:13
     [PROTOCOL sftp-client.c sftp-client.h sftp-server.c sftp.1 sftp.c]
     fsync@openssh.com protocol extension for sftp-server
     client support to allow calling fsync() faster successful transfer
     patch mostly by imorgan AT nas.nasa.gov; bz#1798
     "fine" markus@ "grumble OK" deraadt@ "doesn't sound bad to me" millert@
diff --git a/PROTOCOL b/PROTOCOL
index 48b3a44..0363314 100644
--- a/PROTOCOL
+++ b/PROTOCOL
@@ -331,4 +331,18 @@
 This extension is advertised in the SSH_FXP_VERSION hello with version
 "1".
 
-$OpenBSD: PROTOCOL,v 1.20 2013/01/08 18:49:04 markus Exp $
+10. sftp: Extension request "fsync@openssh.com"
+
+This request asks the server to call fsync(2) on an open file handle.
+
+	uint32		id
+	string		"fsync@openssh.com"
+	string		handle
+
+One receiving this request, a server will call fsync(handle_fd) and will
+respond with a SSH_FXP_STATUS message.
+
+This extension is advertised in the SSH_FXP_VERSION hello with version
+"1".
+
+$OpenBSD: PROTOCOL,v 1.21 2013/10/17 00:30:13 djm Exp $