github.com/rootless-containers/rootlesskit/v2@v2.3.4/hack/integration-propagation.sh (about)

     1  #!/bin/bash
     2  source $(realpath $(dirname $0))/common.inc.sh
     3  function test_propagation() {
     4  	propagation=$1
     5  	INFO "Testing --propagation=$propagation"
     6  	d=$(mktemp -d)
     7  	state=$d/state
     8  	$ROOTLESSKIT --state-dir=$state --propagation=$propagation -- sleep infinity &
     9  	job=$!
    10  	until test -f $state/child_pid; do sleep 0.1; done
    11  	pid=$(cat $state/child_pid)
    12  	mkdir -p $d/a
    13  	touch $d/a/before_mount
    14  	sudo mount -t tmpfs none $d/a
    15  	touch $d/a/after_mount
    16  	case $propagation in
    17  	private | rprivate)
    18  		test -f /proc/$pid/root/$d/a/before_mount
    19  		test ! -f /proc/$pid/root/$d/a/after_mount
    20  		;;
    21  	slave | rslave | shared | rshared)
    22  		test ! -f /proc/$pid/root/$d/a/before_mount
    23  		test -f /proc/$pid/root/$d/a/after_mount
    24  		;;
    25  	*)
    26  		ERROR "Unknown propagation $propagation"
    27  		exit 1
    28  		;;
    29  	esac
    30  	sudo umount $d/a
    31  	kill $job
    32  	wait
    33  	rm -rf $d
    34  	INFO "Testing --propagation=$propagation with copy-up"
    35  	case $propagation in
    36  	private | rprivate | slave | rslave)
    37  		$ROOTLESSKIT --propagation=$propagation --copy-up=/run echo test
    38  		;;
    39  	shared | rshared)
    40  		INFO "(skipping, because known not to work)"
    41  		;;
    42  	*)
    43  		ERROR "Unknown propagation $propagation"
    44  		exit 1
    45  		;;
    46  	esac
    47  }
    48  
    49  test_propagation private
    50  test_propagation rprivate
    51  if findmnt -n -l -o propagation / | grep shared >/dev/null; then
    52  	test_propagation slave
    53  	test_propagation rslave
    54  	test_propagation shared
    55  	test_propagation rshared
    56  else
    57  	INFO "the propagation of / is not shared; skipping non-private tests"
    58  fi