The Smack Project is committed to the premise that security does not have to be complicated.
The recommended mount point for the smackfs filesystem is changing from /smack to /sys/fs/smackfs. This is being done to simplify the inclusion of Smack support in systemd. Thanks to all of the people on the systemd project who are making this happen.
Smack is a mainline component of the Linux Kernel. You can get the latest version of the Linux Kernel here.
The current development version of the Smack kernel components is available here.
User space components are maintained separately. The generic smack libraries and utilities are here.