core: remove SmackFileSystemRootLabel= again Apparently, util-linux' mount command implicitly drops the smack-related options anyway before passing them to the kernel, if the kernel doesn't know SMACK, hence there's no point in duplicating this in systemd. Fixes #1696

core: rename SmackFileSystemRoot= to SmackFileSystemRootLabel= That way it's in sync with the other SMACK label settings. https://github.com/systemd/systemd/pull/1664#issuecomment-150891270

units: add 'SmackFileSystemRoot=*' option into tmp.mount If SMACK is enabled, 'smackfsroot=*' option should be specified when /tmp is mounted since many non-root processes use /tmp for temporary usage. If not, /tmp is labeled as '_' and smack denial occurs when writing. In order to do that, 'SmackFileSystemRoot=*' is newly added into tmp.mount.

units: add 'smackfsroot=*' option into tmp.mount when SMACK is enabled If SMACK is enabled, 'smackfsroot=*' option should be specified in tmp.mount file since many non-root processes use /tmp for temporary usage. If not, /tmp is labeled as '_' and smack denial occurs when writing.