diff -Naur cryptkeeper-0.9.5.orig/src/lsof.cpp cryptkeeper-0.9.5/src/lsof.cpp --- cryptkeeper-0.9.5.orig/src/lsof.cpp 2009-10-18 13:47:13.000000000 +0200 +++ cryptkeeper-0.9.5/src/lsof.cpp 2012-09-16 23:00:05.465985217 +0200 @@ -17,6 +17,7 @@ */ #include <stdlib.h> #include <stdio.h> +#include <unistd.h> #include <string> #include <vector> #include <assert.h>