# TODO: draft of security hardening sysctls:
# what about bpf_jit_enable?
# vm.mmap_min_addr has a good value
-# kernel.modules_disabled=1
# nosmt sysfs control file
# vm.mmap_rnd_bits=max (?)
# kernel.sysrq=0
# At first, it disabled unprivileged userfaultfd,
# and since v5.11 it enables unprivileged userfaultfd for user-mode only.
+# l += [SysctlCheck('cut_attack_surface', 'clipos', 'kernel.modules_disabled', '1')] # radical, but may be useful in some cases
+
l += [SysctlCheck('harden_userspace', 'kspp', 'fs.protected_symlinks', '1')]
l += [SysctlCheck('harden_userspace', 'kspp', 'fs.protected_hardlinks', '1')]
l += [SysctlCheck('harden_userspace', 'kspp', 'fs.protected_fifos', '2')]