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 # Note: for debugging systemd.journald.max_level_console=debug might come in handy
   7 #       as well, but it's not used here since it's _very_ noisy and slows the test
   8 #       down a lot
   9 KERNEL_APPEND="${KERNEL_APPEND:-} systemd.journald.forward_to_console=1"
  10 TEST_NO_NSPAWN=1
  11
  12 # shellcheck source=test/test-functions
  13 . "${TEST_BASE_DIR:?}/test-functions"
  14
  15 test_append_files() {
  16     local workspace="${1:?}"
  17     local sd_initrd file dir
  18
  19     # Create a shutdown initrd
  20     #
  21     # This should provide coverage for shutdown initrd related issues, see:
  22     #   - https://github.com/systemd/systemd/issues/28645
  23     #   - https://github.com/systemd/systemd/pull/28648
  24     #   - https://github.com/systemd/systemd/pull/28793
  25     #
  26     # This is a bit messier than I originally anticipated, as installing our own libraries
  27     # is handled implicitly by install_systemd() which I don't want to use here, since
  28     # I need only the systemd-shutdown binary
  29     sd_initrd="$workspace/shutdown-initrd"
  30     mkdir -p "$sd_initrd/etc" "$sd_initrd/usr"
  31     initdir="$sd_initrd" image_install bash /usr/lib/os-release
  32     ln -srf "$sd_initrd/usr/lib/os-release" "$sd_initrd/etc/initrd-release"
  33     initdir="$sd_initrd" inst_binary "$workspace/usr/lib/systemd/systemd-shutdown" "/usr/lib/systemd/systemd-shutdown"
  34     initdir="$sd_initrd" inst_libs "$sd_initrd/usr/lib/systemd/systemd-shutdown"
  35     # We need to deal with libsystemd stuff explicitly, as we don't call install_systemd() here
  36     while read -r file; do
  37         initdir="$sd_initrd" inst_library "$file" "${file##"$workspace"}"
  38         initdir="$sd_initrd" inst_libs "$file"
  39     done < <(find "$workspace/usr/" -name "libsystemd*.so*")
  40     # Call systemd-shutdown indirectly, so we can show a message that we can check for
  41     # later to make sure the shutdown initrd was actually executed
  42     cat >"$sd_initrd/shutdown" <<\EOF
  43 #!/usr/bin/bash -eu
  44 echo "Hello from shutdown initrd"
  45 exec /usr/lib/systemd/systemd-shutdown "$@"
  46 EOF
  47     chmod +x "$sd_initrd/shutdown"
  48 }
  49
  50 check_result_qemu_hook() {
  51     local workspace="${1:?}"
  52     local console_log="${TESTDIR:?}/console.log"
  53
  54     if [[ -e "$workspace/skipped" ]]; then
  55         return 0
  56     fi
  57
  58     if [[ ! -e "$console_log" ]]; then
  59         dfatal "Missing console log - this shouldn't happen"
  60         return 1
  61     fi
  62
  63     # The console log should not contain messages like:
  64     # [    6.245000] systemd-shutdown[1]: Failed to move /run/initramfs to /: Invalid argument
  65     # [    6.245955] systemd-shutdown[1]: Failed to switch root to "/run/initramfs": Invalid argument
  66     if grep -qE "systemd-shutdown.+: Failed to move /run/initramfs" "$console_log" ||
  67        grep -qE "systemd-shutdown.+: Failed to switch root" "$console_log"; then
  68         derror "sd-shutdown failed to switch root in shutdown initrd"
  69         return 1
  70     fi
  71
  72     # Check if the shutdown initrd was executed at all
  73     if ! grep -qE "^Hello from shutdown initrd\s*$" "$console_log"; then
  74         derror "Missing 'hello' message from shutdown initrd"
  75         return 1
  76     fi
  77
  78     return 0
  79 }
  80
  81 # Setup a one shot service in initrd that creates a dummy bind mount under /run
  82 # to check if the mount persists though the initrd transition. The "check" part
  83 # is in the respective testsuite-08.sh script.
  84 #
  85 # See: https://github.com/systemd/systemd/issues/28452
  86 run_qemu_hook() {
  87     local extra="${TESTDIR:?}/initrd.extra"
  88
  89     mkdir -m 755 "$extra"
  90     mkdir -m 755 "$extra/etc" "$extra/etc/systemd" "$extra/etc/systemd/system" "$extra/etc/systemd/system/initrd.target.wants"
  91
  92     cat >"$extra/etc/systemd/system/initrd-run-mount.service" <<EOF
  93 [Unit]
  94 Description=Create a mount in /run that should survive the transition from initrd
  95
  96 [Service]
  97 Type=oneshot
  98 RemainAfterExit=yes
  99 ExecStart=mkdir /run/initrd-mount-source /run/initrd-mount-target
 100 ExecStart=mount -v --bind /run/initrd-mount-source /run/initrd-mount-target
 101 ExecStart=cp -v /etc/initrd-release /run/initrd-mount-target/hello-world
 102 EOF
 103     ln -svrf "$extra/etc/systemd/system/initrd-run-mount.service" "$extra/etc/systemd/system/initrd.target.wants/initrd-run-mount.service"
 104
 105     (cd "$extra" && find . | cpio -o -H newc -R root:root > "$extra.cpio")
 106
 107     INITRD_EXTRA="$extra.cpio"
 108 }
 109
 110 do_test "$@"