vsftpd: change default value of secure_chroot_dir

Upstream-Status: Pending

Change secure_chroot_dir pointing to a volatile directory.

Signed-off-by: Ming Liu <ming.liu@windriver.com>
---
 INSTALL       |    6 +++---
 tunables.c    |    2 +-
 vsftpd.conf.5 |    2 +-
 3 files changed, 5 insertions(+), 5 deletions(-)

diff -urpN a/INSTALL b/INSTALL
--- a/INSTALL	2013-09-13 10:23:57.504972397 +0800
+++ b/INSTALL	2013-09-13 10:25:25.664971779 +0800
@@ -27,11 +27,11 @@ user in case it does not already exist. 
 [root@localhost root]# useradd nobody
 useradd: user nobody exists
 
-2b) vsftpd needs the (empty) directory /usr/share/empty in the default
+2b) vsftpd needs the (empty) directory /var/run/vsftpd/empty in the default
 configuration. Add this directory in case it does not already exist. e.g.:
 
-[root@localhost root]# mkdir /usr/share/empty/
-mkdir: cannot create directory `/usr/share/empty': File exists
+[root@localhost root]# mkdir /var/run/vsftpd/empty/
+mkdir: cannot create directory `/var/run/vsftpd/empty': File exists
 
 2c) For anonymous FTP, you will need the user "ftp" to exist, and have a
 valid home directory (which is NOT owned or writable by the user "ftp").
diff -urpN a/tunables.c b/tunables.c
--- a/tunables.c	2013-09-13 10:26:29.554972817 +0800
+++ b/tunables.c	2013-09-13 10:27:18.104972210 +0800
@@ -254,7 +254,7 @@ tunables_load_defaults()
   /* -rw------- */
   tunable_chown_upload_mode = 0600;
 
-  install_str_setting("/usr/share/empty", &tunable_secure_chroot_dir);
+  install_str_setting("/var/run/vsftpd/empty", &tunable_secure_chroot_dir);
   install_str_setting("ftp", &tunable_ftp_username);
   install_str_setting("root", &tunable_chown_username);
   install_str_setting("/var/log/xferlog", &tunable_xferlog_file);
diff -urpN a/vsftpd.conf.5 b/vsftpd.conf.5
--- a/vsftpd.conf.5	2013-09-13 10:09:33.774972462 +0800
+++ b/vsftpd.conf.5	2013-09-13 10:10:41.914971989 +0800
@@ -969,7 +969,7 @@ This option should be the name of a dire
 directory should not be writable by the ftp user. This directory is used
 as a secure chroot() jail at times vsftpd does not require filesystem access.
 
-Default: /usr/share/empty
+Default: /var/run/vsftpd/empty
 .TP
 .B ssl_ciphers
 This option can be used to select which SSL ciphers vsftpd will allow for