test/TEST-08-INITRD/test.sh

   1 #!/usr/bin/env bash
   2 # SPDX-License-Identifier: LGPL-2.1-or-later
   3 set -e
   4
   5 TEST_DESCRIPTION="Test various scenarios involving transition from/to initrd"
   6 TEST_NO_NSPAWN=1
   7
   8 # shellcheck source=test/test-functions
   9 . "${TEST_BASE_DIR:?}/test-functions"
  10
  11 test_append_files() {
  12     local workspace="${1:?}"
  13     local sd_initrd file dir
  14
  15     # Create a shutdown initrd
  16     #
  17     # This should provide coverage for shutdown initrd related issues, see:
  18     #   - https://github.com/systemd/systemd/issues/28645
  19     #   - https://github.com/systemd/systemd/pull/28648
  20     #   - https://github.com/systemd/systemd/pull/28793
  21     #
  22     # This is a bit messier than I originally anticipated, as installing our own libraries
  23     # is handled implicitly by install_systemd() which I don't want to use here, since
  24     # I need only the systemd-shutdown binary
  25     sd_initrd="$workspace/shutdown-initrd"
  26     mkdir -p "$sd_initrd/etc" "$sd_initrd/usr"
  27     initdir="$sd_initrd" image_install bash /usr/lib/os-release
  28     ln -srf "$sd_initrd/usr/lib/os-release" "$sd_initrd/etc/initrd-release"
  29     initdir="$sd_initrd" inst_binary "$workspace/usr/lib/systemd/systemd-shutdown" "/usr/lib/systemd/systemd-shutdown"
  30     initdir="$sd_initrd" inst_libs "$sd_initrd/usr/lib/systemd/systemd-shutdown"
  31     # We need to deal with libsystemd stuff explicitly, as we don't call install_systemd() here
  32     while read -r file; do
  33         initdir="$sd_initrd" inst_library "$file" "${file##"$workspace"}"
  34         initdir="$sd_initrd" inst_libs "$file"
  35     done < <(find "$workspace/usr/" -name "libsystemd*.so*")
  36     # Call systemd-shutdown indirectly, so we can show a message that we can check for
  37     # later to make sure the shutdown initrd was actually executed
  38     cat >"$sd_initrd/shutdown" <<\EOF
  39 #!/usr/bin/bash -eu
  40 echo "Hello from shutdown initrd"
  41 exec /usr/lib/systemd/systemd-shutdown "$@"
  42 EOF
  43     chmod +x "$sd_initrd/shutdown"
  44 }
  45
  46 check_result_qemu_hook() {
  47     local console_log="${TESTDIR:?}/console.log"
  48
  49     if [[ ! -e "$console_log" ]]; then
  50         dfatal "Missing console log - this shouldn't happen"
  51         return 1
  52     fi
  53
  54     # The console log should not contain messages like:
  55     # [    6.245000] systemd-shutdown[1]: Failed to move /run/initramfs to /: Invalid argument
  56     # [    6.245955] systemd-shutdown[1]: Failed to switch root to "/run/initramfs": Invalid argument
  57     if grep -qE "systemd-shutdown.+: Failed to move /run/initramfs" "$console_log" ||
  58        grep -qE "systemd-shutdown.+: Failed to switch root" "$console_log"; then
  59         derror "sd-shutdown failed to switch root in shutdown initrd"
  60         return 1
  61     fi
  62
  63     # Check if the shutdown initrd was executed at all
  64     if ! grep -qE "^Hello from shutdown initrd\s*$" "$console_log"; then
  65         derror "Missing 'hello' message from shutdown initrd"
  66         return 1
  67     fi
  68
  69     return 0
  70 }
  71
  72 # Setup a one shot service in initrd that creates a dummy bind mount under /run
  73 # to check if the mount persists though the initrd transition. The "check" part
  74 # is in the respective testsuite-08.sh script.
  75 #
  76 # See: https://github.com/systemd/systemd/issues/28452
  77 run_qemu_hook() {
  78     local extra="${TESTDIR:?}/initrd.extra"
  79
  80     mkdir -m 755 "$extra"
  81     mkdir -m 755 "$extra/etc" "$extra/etc/systemd" "$extra/etc/systemd/system" "$extra/etc/systemd/system/initrd.target.wants"
  82
  83     cat >"$extra/etc/systemd/system/initrd-run-mount.service" <<EOF
  84 [Unit]
  85 Description=Create a mount in /run that should survive the transition from initrd
  86
  87 [Service]
  88 Type=oneshot
  89 RemainAfterExit=yes
  90 ExecStart=mkdir /run/initrd-mount-source /run/initrd-mount-target
  91 ExecStart=mount -v --bind /run/initrd-mount-source /run/initrd-mount-target
  92 ExecStart=cp -v /etc/initrd-release /run/initrd-mount-target/hello-world
  93 EOF
  94     ln -svrf "$extra/etc/systemd/system/initrd-run-mount.service" "$extra/etc/systemd/system/initrd.target.wants/initrd-run-mount.service"
  95
  96     (cd "$extra" && find . | cpio -o -H newc -R root:root > "$extra.cpio")
  97
  98     INITRD_EXTRA="$extra.cpio"
  99 }
 100
 101 do_test "$@"