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#!/bin/bash -ex
this_script="${BASH_SOURCE:-$(readlink -f "$0")}"
OSTREE_PREPARE_ROOT=$(dirname "${this_script}")/../ostree-prepare-root
if [ ! -x "${OSTREE_PREPARE_ROOT}" ]; then
# ostree-prepare-root is in $libdir by default, assume we can find it
# based on our test directory, if not we'll have to skip this test.
OSTREE_PREPARE_ROOT=$(dirname "${this_script}")/../../../lib/ostree/ostree-prepare-root
if [ ! -x "${OSTREE_PREPARE_ROOT}" ]; then
OSTREE_PREPARE_ROOT=""
fi
fi
setup_bootfs() {
mkdir -p "$1/proc" "$1/bin"
# We need the real /proc mounted here so musl's realpath will work, but we
# want to be able to override /proc/cmdline, so bind mount.
mount -t proc proc "$1/proc"
echo "quiet ostree=/ostree/boot.0 ro" >"$1/override_cmdline"
mount --bind "$1/override_cmdline" "$1/proc/cmdline"
touch "$1/this_is_bootfs"
cp "${OSTREE_PREPARE_ROOT}" "$1/bin"
}
setup_rootfs() {
mkdir -p "$1/ostree/deploy/linux/deploy/1334/sysroot" \
"$1/ostree/deploy/linux/deploy/1334/var" \
"$1/ostree/deploy/linux/deploy/1334/usr" \
"$1/ostree/deploy/linux/var" \
"$1/bin"
ln -s "deploy/linux/deploy/1334" "$1/ostree/boot.0"
ln -s . "$1/sysroot"
touch "$1/ostree/deploy/linux/deploy/1334/this_is_ostree_root" \
"$1/ostree/deploy/linux/var/this_is_ostree_var" \
"$1/ostree/deploy/linux/deploy/1334/usr/this_is_ostree_usr" \
"$1/this_is_real_root"
cp /bin/busybox "$1/bin"
busybox --list | xargs -n1 -I '{}' ln -s busybox "$1/bin/{}"
cp -r "$1/bin" "$1/ostree/deploy/linux/deploy/1334/"
}
setup_overlay() {
mkdir -p "$1/ostree/deploy/linux/deploy/1334/.usr-ovl-work" \
"$1/ostree/deploy/linux/deploy/1334/.usr-ovl-upper"
}
enter_fs() {
cd "$1"
mkdir testroot
pivot_root . testroot
export PATH=$PATH:/sysroot/bin
cd /
umount -l testroot
rmdir testroot
}
find_in_env() {
tmpdir="$(mktemp -dt ostree-test-switchroot.XXXXXX)"
unshare -m <<-EOF
set -e
. "$this_script"
"$1" "$tmpdir"
enter_fs "$tmpdir"
ostree-prepare-root /sysroot
find / \( -path /proc -o -path /sysroot/proc \) -prune -o -print
touch /usr/usr_writable 2>/null \
&& echo "/usr is writable" \
|| echo "/usr is not writable"
touch /sysroot/usr/sysroot_usr_writable 2>/null \
&& echo "/sysroot/usr is writable" \
|| echo "/sysroot/usr is not writable"
EOF
(cd $tmpdir && find) >permanent_files
rm -rf "$tmpdir"
}
setup_initrd_env() {
mount -t tmpfs tmpfs "$1"
setup_bootfs "$1"
mkdir "$1/sysroot"
mount -t tmpfs tmpfs "$1/sysroot"
setup_rootfs "$1/sysroot"
}
test_that_prepare_root_sets_sysroot_up_correctly_with_initrd() {
find_in_env setup_initrd_env >files
grep -qx "/this_is_bootfs" files
grep -qx "/sysroot/this_is_ostree_root" files
grep -qx "/sysroot/sysroot/this_is_real_root" files
if ! have_systemd_and_libmount; then
grep -qx "/sysroot/var/this_is_ostree_var" files
fi
grep -qx "/sysroot/usr/this_is_ostree_usr" files
grep -qx "/sysroot/usr is not writable" files
echo "ok ostree-prepare-root sets sysroot up correctly with initrd"
}
setup_no_initrd_env() {
mount --bind "$1" "$1"
setup_rootfs "$1"
setup_bootfs "$1"
}
test_that_prepare_root_sets_root_up_correctly_with_no_initrd() {
find_in_env setup_no_initrd_env >files
grep -qx "/this_is_ostree_root" files
grep -qx "/sysroot/this_is_bootfs" files
grep -qx "/sysroot/this_is_real_root" files
if ! have_systemd_and_libmount; then
grep -qx "/var/this_is_ostree_var" files
fi
grep -qx "/usr/this_is_ostree_usr" files
grep -qx "/usr is not writable" files
echo "ok ostree-prepare-root sets root up correctly with no initrd"
}
setup_no_initrd_with_overlay() {
setup_no_initrd_env "$1"
setup_overlay "$1"
}
test_that_prepare_root_provides_overlay_over_usr_if__usr_ovl_work_exists() {
find_in_env setup_no_initrd_with_overlay >files
grep -qx "/usr is writable" files
grep -qx "./ostree/deploy/linux/deploy/1334/.usr-ovl-upper/usr_writable" permanent_files
! grep -qx "./ostree/deploy/linux/deploy/1334/usr/usr_writable" permanent_files || exit 1
echo "ok ostree-prepare-root sets root up correctly with writable usr overlay"
}
# This script sources itself so we only want to run tests if we're the parent:
if [ "${BASH_SOURCE[0]}" = "${0}" ]; then
. $(dirname $0)/libtest.sh
unshare -m true || \
skip "this test needs to set up mount namespaces, rerun as root"
[ -f /bin/busybox ] || \
skip "this test needs busybox"
[ -n "${OSTREE_PREPARE_ROOT}" ] || \
skip "this test needs ostree-prepare-root"
echo "1..3"
test_that_prepare_root_sets_sysroot_up_correctly_with_initrd
test_that_prepare_root_sets_root_up_correctly_with_no_initrd
test_that_prepare_root_provides_overlay_over_usr_if__usr_ovl_work_exists
fi
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