2 # SPDX-License-Identifier: LGPL-2.1-or-later
5 # This is a build script for OS image generation using mkosi (https://github.com/systemd/mkosi).
6 # Simply invoke "mkosi" in the project directory to build an OS image.
8 ASAN_OPTIONS
=strict_string_checks
=1:detect_stack_use_after_return
=1:check_initialization_order
=1:strict_init_order
=1:disable_coredump
=0:use_madv_dontdump
=1
9 UBSAN_OPTIONS
=print_stacktrace
=1:print_summary
=1:halt_on_error
=1
11 # On Fedora "ld" is (unfortunately — if you ask me) managed via
12 # "alternatives". Since we'd like to support building images in environments
13 # with only /usr/ around (e.g. mkosi's UsrOnly=1 option), we have the problem
14 # that /usr/bin/ld is a symlink that points to a non-existing file in
15 # /etc/alternative/ in this mode. Let's work around this for now by manually
16 # redirect "ld" to "ld.bfd", i.e. circumventing the /usr/bin/ld symlink.
17 if [ ! -x /usr
/bin
/ld
] && [ -x /usr
/bin
/ld.bfd
]; then
19 ln -s /usr
/bin
/ld.bfd
"$HOME"/bin
/ld
20 PATH
="$HOME/bin:$PATH"
23 # If mkosi.builddir/ exists mkosi will set $BUILDDIR to it, let's then use it
24 # as out-of-tree build dir. Otherwise, let's make up our own builddir.
25 [ -z "$BUILDDIR" ] && BUILDDIR
=build
27 # Meson uses Python 3 and requires a locale with an UTF-8 character map.
28 # Not running under UTF-8 makes the `ninja test` step break with a CodecError.
29 # So let's ensure we're running under UTF-8.
31 # If our current locale already is UTF-8, then we don't need to do anything:
32 if [ "$(locale charmap 2>/dev/null)" != "UTF-8" ] ; then
33 # Try using C.UTF-8 locale, if available. This locale is not shipped
34 # by upstream glibc, so it's not available in all distros.
35 # (In particular, it's not available in Arch Linux.)
36 if locale
-a |
grep -q -E "C.UTF-8|C.utf8"; then
37 export LC_CTYPE
=C.UTF-8
38 # Finally, try something like en_US.UTF-8, which should be
39 # available in Arch Linux, but is not present in Debian's
40 # minimal image in our mkosi config.
41 elif locale
-a |
grep -q en_US.utf8
; then
42 export LC_CTYPE
=en_US.UTF-8
44 # If nothing works, fail early.
45 echo "*** Could not find a valid locale that supports UTF-8. ***" >&2
50 # The bpftool script shipped by Ubuntu tries to find the actual program to run via querying `uname -r` and
51 # using the current kernel version. This obviously doesn't work in containers. As a workaround, we override
52 # the ubuntu script with a symlink to the first bpftool program we can find.
53 for bpftool
in /usr
/lib
/linux-tools
/*/bpftool
; do
54 [ -x "$bpftool" ] ||
continue
55 ln -sf "$bpftool" /usr
/sbin
/bpftool
59 if [ ! -f "$BUILDDIR"/build.ninja
] ; then
60 sysvinit_path
=$
(realpath
/etc
/init.d
)
62 init_path
=$
(realpath
/sbin
/init
2>/dev
/null
)
63 if [ -z "$init_path" ] ; then
66 rootprefix
=${init_path%/lib/systemd/systemd}
67 rootprefix
=/${rootprefix#/}
71 -D "sysvinit-path=$sysvinit_path" \
72 -D "rootprefix=$rootprefix" \
74 -D translations
=false \
75 -D version-tag
="${VERSION_TAG}" \
77 -D b_sanitize
="${SANITIZERS:-none}" \
78 -D install-tests
=true \
87 -D environment-d
=true \
106 -D nss-myhostname
=true \
107 -D nss-mymachines
=true \
108 -D nss-resolve
=true \
109 -D nss-systemd
=true \
120 -D xdg-autostart
=true \
121 -D translations
=true \
131 -D libcryptsetup
=true \
139 -D cryptolib
=openssl \
150 -D kernel-install
=true \
152 -D bpf-framework
=true
157 if [ "$WITH_TESTS" = 1 ] ; then
159 getent group
$id >/dev
/null ||
echo "g testgroup$id $id -" | .
/systemd-sysusers
-
162 if [ -n "$SANITIZERS" ]; then
163 export ASAN_OPTIONS
="$ASAN_OPTIONS"
164 export UBSAN_OPTIONS
="$UBSAN_OPTIONS"
170 meson
test --print-errorlogs --timeout-multiplier=$TIMEOUT_MULTIPLIER
174 # Ubuntu Focal is stuck with meson 0.53.0.
175 if [ "$(meson -v | cut -d . -f 2)" -gt 53 ] ; then
176 meson
install -C "$BUILDDIR" --quiet --no-rebuild --only-changed
178 meson
install -C "$BUILDDIR" --no-rebuild --only-changed
181 mkdir
-p "$DESTDIR"/etc
183 cat >"$DESTDIR"/etc
/issue
<<EOF
184 \S (built from systemd tree)
185 Kernel \r on an \m (\l)
189 if [ -n "$IMAGE_ID" ] ; then
190 mkdir
-p "$DESTDIR"/usr
/lib
192 -e '/^IMAGE_ID=/!p' \
193 -e "\$aIMAGE_ID=$IMAGE_ID" <"/usr/lib/os-release" >"${DESTDIR}/usr/lib/os-release"
195 OSRELEASEFILE
="$DESTDIR"/usr
/lib
/os-release
197 OSRELEASEFILE
=/usr
/lib
/os-release
201 if [ -n "$IMAGE_VERSION" ] ; then
202 mkdir
-p "$DESTDIR"/usr
/lib
204 -e '/^IMAGE_VERSION=/!p' \
205 -e "\$aIMAGE_VERSION=$IMAGE_VERSION" <$OSRELEASEFILE >"/tmp/os-release.tmp"
207 cat /tmp
/os-release.tmp
> "$DESTDIR"/usr
/lib
/os-release
208 rm /tmp
/os-release.tmp
211 # If $CI_BUILD is set, copy over the CI service which executes a service check
212 # after boot and then shuts down the machine
213 if [ -n "$CI_BUILD" ]; then
214 mkdir
-p "$DESTDIR/usr/lib/systemd/system"
215 cp -v "$SRCDIR/test/mkosi-check-and-shutdown.service" "$DESTDIR/usr/lib/systemd/system/mkosi-check-and-shutdown.service"
216 cp -v "$SRCDIR/test/mkosi-check-and-shutdown.sh" "$DESTDIR/usr/lib/systemd/mkosi-check-and-shutdown.sh"
217 chmod +x
"$DESTDIR/usr/lib/systemd/mkosi-check-and-shutdown.sh"
220 if [ -n "$SANITIZERS" ]; then
221 LD_PRELOAD
=$
(ldd
$BUILDDIR/systemd |
grep libasan.so |
awk '{print $3}')
223 mkdir
-p "$DESTDIR/etc/systemd/system.conf.d"
225 cat > "$DESTDIR/etc/systemd/system.conf.d/10-asan.conf" <<EOF
227 ManagerEnvironment=ASAN_OPTIONS=$ASAN_OPTIONS\\
228 UBSAN_OPTIONS=$UBSAN_OPTIONS\\
229 LD_PRELOAD=$LD_PRELOAD
230 DefaultEnvironment=ASAN_OPTIONS=$ASAN_OPTIONS\\
231 UBSAN_OPTIONS=$UBSAN_OPTIONS\\
232 LD_PRELOAD=$LD_PRELOAD
235 # ASAN logs to stderr by default. However, journald's stderr is connected to /dev/null, so we lose
236 # all the ASAN logs. To rectify that, let's connect journald's stdout to the console so that any
237 # sanitizer failures appear directly on the user's console.
238 mkdir
-p "$DESTDIR/etc/systemd/system/systemd-journald.service.d"
240 cat > "$DESTDIR/etc/systemd/system/systemd-journald.service.d/10-stdout-tty.conf" <<EOF
245 # Both systemd and util-linux's login call vhangup() on /dev/console which disconnects all users.
246 # This means systemd-journald can't log to /dev/console even if we configure `StandardOutput=tty`. As
247 # a workaround, we modify console-getty.service to disable systemd's vhangup() and disallow login
248 # from calling vhangup() so that journald's ASAN logs correctly end up in the console.
250 mkdir
-p "$DESTDIR/etc/systemd/system/console-getty.service.d"
252 cat > "$DESTDIR/etc/systemd/system/console-getty.service.d/10-no-vhangup.conf" <<EOF
255 CapabilityBoundingSet=~CAP_SYS_TTY_CONFIG
259 # Make sure services aren't enabled by default on Debian/Ubuntu.
260 mkdir
-p "$DESTDIR/etc/systemd/system-preset"
261 echo "disable *" > "$DESTDIR/etc/systemd/system-preset/99-mkosi.preset"