Current File : //var/lib/dpkg/info/usrmerge.preinst
#!/bin/sh -e
standalone_usr() {
local device_root=$(stat --printf='%d\n' /)
local device_usr=$(stat --printf='%d\n' /usr)
if [ "$device_root" != "$device_usr" ]; then
return 0
fi
return 1
}
booted_with_initramfs() {
# created by update-initramfs
if [ -d /run/initramfs/ ]; then
return 1
fi
return 0
}
has_initramfs() {
standalone_usr || return 0
booted_with_initramfs || return 0
echo "/usr is a standalone filesystem, this requires using an initramfs."
exit 1
}
case "$1" in
install)
# check the prerequisites on the first install
if [ -z "$2" ]; then
has_initramfs
fi
;;
esac
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