Improve documentation of better_stou in the man page

0001-Improve-documentation-of-better_stou-in-the-man-page.patch

@@ -0,0 +1,30 @@
+From 765f99b26705c8d6fe2be4feb07f4c91e7eb96f9 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Ond=C5=99ej=20Lyson=C4=9Bk?= <olysonek@redhat.com>
+Date: Thu, 5 Apr 2018 12:29:03 +0200
+Subject: [PATCH] Improve documentation of better_stou in the man page
+
+---
+ vsftpd.conf.5 | 7 ++++++-
+ 1 file changed, 6 insertions(+), 1 deletion(-)
+
+diff --git a/vsftpd.conf.5 b/vsftpd.conf.5
+index 6911a73..e9ae474 100644
+--- a/vsftpd.conf.5
++++ b/vsftpd.conf.5
+@@ -68,7 +68,12 @@ trick the C library into loading a user-created configuration file from the
+ Default: NO
+ .TP
+ .B better_stou
+-Use better file name generation algorithm for the STOU command.
++Use a better file name generation algorithm for the STOU command. The default
++original algorithm simply adds an increasing number suffix to the file name,
++which is prone to race conditions if multiple uploaders use the STOU command
++with the same file name simultaneously, which can result in failure of the
++command. The new algorithm adds a unique random six character suffix to
++the file name, which works much better in face of concurrent uploads.
+ 
+ Default: NO
+ .TP
+-- 
+2.14.3
+

vsftpd.spec

@@ -2,7 +2,7 @@
 
 Name:    vsftpd
 Version: 3.0.3
-Release: 20%{?dist}
+Release: 21%{?dist}
 Summary: Very Secure Ftp Daemon
 
 Group:    System Environment/Daemons
@@ -79,6 +79,7 @@ Patch47: 0047-Disable-tcp_wrappers-support.patch
 Patch48: 0048-Fix-default-value-of-strict_ssl_read_eof-in-man-page.patch
 Patch49: 0049-Add-new-filename-generation-algorithm-for-STOU-comma.patch
 Patch50: 0050-Don-t-link-with-libnsl.patch
+Patch51: 0001-Improve-documentation-of-better_stou-in-the-man-page.patch
 
 %description
 vsftpd is a Very Secure FTP daemon. It was written completely from
@@ -148,6 +149,9 @@ mkdir -p $RPM_BUILD_ROOT/%{_var}/ftp/pub
 %{_var}/ftp
 
 %changelog
+* Thu Apr 05 2018 Ondřej Lysoněk <olysonek@redhat.com> - 3.0.3-21
+- Improve documentation of better_stou in the man page
+
 * Mon Feb 19 2018 Ondřej Lysoněk <olysonek@redhat.com> - 3.0.3-20
 - Add gcc to BuildRequires