systemd/test/test-execute/exec-temporaryfilesystem-options.service

[Unit]
Description=Test for TemporaryFileSystem with mount options

[Service]
Type=oneshot

# The mount options default to "mode=0755,nodev,strictatime".
# Let's override some of them, and test "ro".
TemporaryFileSystem=/var:ro,mode=0700,nostrictatime

# Check /proc/self/mountinfo
ExecStart=/bin/sh -x -c 'test "$$(awk \'$$5 == "/var" && $$11 !~ /(^|,)mode=700(,|$$)/ { print $$6 }\' /proc/self/mountinfo)" = ""'

ExecStart=/bin/sh -x -c 'test "$$(awk \'$$5 == "/var" && $$6 !~ /(^|,)ro(,|$$)/ { print $$6 }\' /proc/self/mountinfo)" = ""'
ExecStart=/bin/sh -x -c 'test "$$(awk \'$$5 == "/var" && $$6 !~ /(^|,)nodev(,|$$)/ { print $$6 }\' /proc/self/mountinfo)" = ""'
ExecStart=/bin/sh -x -c 'test "$$(awk \'$$5 == "/var" && $$6 ~ /(^|,)strictatime(,|$$)/ { print $$6 }\' /proc/self/mountinfo)" = ""'