/usr/lib/installed-tests/libostree/test-switchroot.sh is in ostree-tests 2018.4-2.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 | #!/bin/bash -ex
this_script="${BASH_SOURCE:-$(readlink -f "$0")}"
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 "$1/this_is_bootfs"
cp "$(dirname "$this_script")/../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 /
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
grep -qx "/sysroot/var/this_is_ostree_var" files
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
grep -qx "/var/this_is_ostree_var" files
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"
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
|