From: mvyskocil@suse.com
Subject: enable sendto to /dev/log

vsftpd is killed once a file is downloaded and it try to log the success to
/dev/log. This patch enables a sendto on fd 4, in a case the syslog logging is
enabled.

Fixes: https://bugzilla.novell.com/show_bug.cgi?id=812406

---
 seccompsandbox.c |   17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

Index: vsftpd-3.0.2/seccompsandbox.c
===================================================================
--- vsftpd-3.0.2.orig/seccompsandbox.c
+++ vsftpd-3.0.2/seccompsandbox.c
@@ -503,6 +501,15 @@ seccomp_sandbox_setup_postlogin(const st
       allow_nr(__NR_chmod);
     }
   }
+
+  /*
+   * MV: this enables logging to the syslog - the vsf_log_do_log are in postlogin.c and privops.c, but hopefully this is enough
+   */
+  if (tunable_syslog_enable)
+  {
+    allow_nr_1_arg_mask(__NR_sendto, 1, 4);
+  }
+
 }
 
 void