Merge pull request #462 from knnniggett/memory

Fix for shared data size conflict

scripts/ZoneMinder/lib/ZoneMinder/Memory.pm.in

@@ -126,8 +126,19 @@ else
     ZoneMinder::Memory::Shared->import();
 }
 
+# Detaint our environment
+$ENV{PATH}  = '/bin:/usr/bin';
+$ENV{SHELL} = '/bin/sh' if exists $ENV{SHELL};
+delete @ENV{qw(IFS CDPATH ENV BASH_ENV)};
+
 # Native architecture
-our $arch = int(3.2*length(~0));
+
+# The following returned the wrong result on some 32 bit distros running on 64 bit hardware
+#our $arch = int(3.2*length(~0));
+
+# New method for determining the bitness
+our $arch = 32 + 32*( qx(uname -m) =~ /64/ );
+
 our $native = $arch/8;
 our $mem_seq = 0;