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LXC: add /.lxcenv

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Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
This commit is contained in:
Markus Heiser 2020-03-18 15:34:46 +01:00
parent 86e79488aa
commit d2cfe9ce5b
3 changed files with 23 additions and 7 deletions
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23
utils/lib.sh
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@ -1065,18 +1065,31 @@ EOF
in_container() {
# Test if shell runs in a container.
#
# hint: Reads init process environment, therefore root access is required!
#
# usage: in_container && echo "process running inside a LXC container"
# in_container || echo "process is not running inside a LXC container"
#
sudo_or_exit
# sudo_or_exit
# hint: Reads init process environment, therefore root access is required!
# to be safe, take a look at the environment of process 1 (/sbin/init)
grep -qa 'container=lxc' /proc/1/environ
# grep -qa 'container=lxc' /proc/1/environ
# see lxc_init_container
[[ -f /.lxcenv ]]
}
lxc_init_container() {
# Create a /.lxcenv file in the root folder. Call this once after container
# is inital started.
# usage: lxc_create_root_dot_lxcenv <name>
info_msg "create /.lxcenv in container $1"
cat <<EOF | lxc exec "${1}" -- bash | prefix_stdout "[${_BBlue}${1}${_creset}] "
touch "/.lxcenv"
ls -l "/.lxcenv"
EOF
}
lxc_exists(){
# usage: lxc_exists <name> || echo "container <name> does not exists"