/usr/share/lxc/config/slackware.common.conf is in lxc-templates 3.0.0-0ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 | # This derives from the global common config
lxc.include = /usr/share/lxc/config/common.conf
# Doesn't support consoles in /dev/lxc/
lxc.tty.dir =
# Extra cgroup device access
## rtc
lxc.cgroup.devices.allow = c 254:0 rm
## tun
lxc.cgroup.devices.allow = c 10:200 rwm
## hpet
lxc.cgroup.devices.allow = c 10:228 rwm
## kvm
lxc.cgroup.devices.allow = c 10:232 rwm
## To use loop devices, copy the following line to the container's
## configuration file (uncommented).
#lxc.cgroup.devices.allow = b 7:* rwm
# mount /dev/shm as tmpfs
lxc.mount.entry = none dev/shm tmpfs rw,nosuid,nodev,create=dir
# Capabilities
# Uncomment these if you don't run anything that needs the capability, and
# would like the container to run with less privilege.
# Note that some are already dropped in common.conf.
#
# Dropping sys_admin disables container root from doing a lot of things
# that could be bad like re-mounting lxc fstab entries rw for example,
# but also disables some useful things like being able to nfs mount, and
# things that are already namespaced with ns_capable() kernel checks, like
# hostname(1).
#
# Some of these don't apply in Slackware but are here for future reference.
#
# lxc.cap.drop = sys_admin # breaks systemd
# lxc.cap.drop = net_raw # breaks dhcp/ping
# lxc.cap.drop = setgid # breaks login (initgroups/setgroups)
# lxc.cap.drop = dac_read_search # breaks login (pam unix_chkpwd)
# lxc.cap.drop = setuid # breaks sshd,nfs statd
# lxc.cap.drop = audit_control # breaks sshd (set_loginuid failed)
# lxc.cap.drop = audit_write
# lxc.cap.drop = setpcap # breaks journald
# lxc.cap.drop = sys_resource # breaks systemd
#
lxc.cap.drop = mknod setfcap setpcap
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