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test: add a couple of tests for systemd-coredump
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Frantisek Sumsal
parent
12962485e4
commit
aadbd81f7f
175
test/units/testsuite-74.coredump.sh
Executable file
175
test/units/testsuite-74.coredump.sh
Executable file
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#!/usr/bin/env bash
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# SPDX-License-Identifier: LGPL-2.1-or-later
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set -eux
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set -o pipefail
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# Make sure the binary name fits into 15 characters
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CORE_TEST_BIN="/tmp/test-dump"
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CORE_TEST_UNPRIV_BIN="/tmp/test-usr-dump"
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MAKE_DUMP_SCRIPT="/tmp/make-dump"
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# Unset $PAGER so we don't have to use --no-pager everywhere
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export PAGER=
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at_exit() {
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rm -fv -- "$CORE_TEST_BIN" "$CORE_TEST_UNPRIV_BIN" "$MAKE_DUMP_SCRIPT"
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}
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trap at_exit EXIT
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if systemd-detect-virt -cq; then
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echo "Running in a container, skipping the systemd-coredump test..."
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exit 0
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fi
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# Check that we're the ones to receive coredumps
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sysctl kernel.core_pattern | grep systemd-coredump
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# Prepare "fake" binaries for coredumps, so we can properly exercise
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# the matching stuff too
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cp -vf /bin/sleep "${CORE_TEST_BIN:?}"
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cp -vf /bin/sleep "${CORE_TEST_UNPRIV_BIN:?}"
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# Simple script that spawns given "fake" binary and then kills it with
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# given signal
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cat >"${MAKE_DUMP_SCRIPT:?}" <<\EOF
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#!/bin/bash -ex
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bin="${1:?}"
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sig="${2:?}"
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ulimit -c unlimited
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"$bin" infinity &
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pid=$!
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sleep 1
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kill -s "$sig" "$pid"
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# This should always fail
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! wait "$pid"
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EOF
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chmod +x "$MAKE_DUMP_SCRIPT"
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# Privileged stuff
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[[ "$(id -u)" -eq 0 ]]
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# Trigger a couple of coredumps
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"$MAKE_DUMP_SCRIPT" "$CORE_TEST_BIN" "SIGTRAP"
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"$MAKE_DUMP_SCRIPT" "$CORE_TEST_BIN" "SIGABRT"
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# In the tests we store the coredumps in journals, so let's generate a couple
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# with Storage=external as well
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mkdir -p /run/systemd/coredump.conf.d/
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printf '[Coredump]\nStorage=external' >/run/systemd/coredump.conf.d/99-external.conf
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"$MAKE_DUMP_SCRIPT" "$CORE_TEST_BIN" "SIGTRAP"
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"$MAKE_DUMP_SCRIPT" "$CORE_TEST_BIN" "SIGABRT"
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rm -fv /run/systemd/coredump.conf.d/99-external.conf
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# Wait a bit for the coredumps to get processed
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timeout 30 bash -c "while [[ $(coredumpctl list -q --no-legend $CORE_TEST_BIN | wc -l) -lt 4 ]]; do sleep 1; done"
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coredumpctl
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SYSTEMD_LOG_LEVEL=debug coredumpctl
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coredumpctl --help
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coredumpctl --version
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coredumpctl --no-pager --no-legend
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coredumpctl --all
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coredumpctl -1
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coredumpctl -n 1
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coredumpctl --reverse
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coredumpctl -F COREDUMP_EXE
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coredumpctl --json=short | jq
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coredumpctl --json=pretty | jq
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coredumpctl --json=off
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coredumpctl --root=/
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coredumpctl --directory=/var/log/journal
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coredumpctl --file="/var/log/journal/$(</etc/machine-id)/system.journal"
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coredumpctl --since=@0
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coredumpctl --since=yesterday --until=tomorrow
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# We should have a couple of externally stored coredumps
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coredumpctl --field=COREDUMP_FILENAME | tee /tmp/coredumpctl.out
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grep "/var/lib/systemd/coredump/core" /tmp/coredumpctl.out
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rm -f /tmp/coredumpctl.out
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coredumpctl info
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coredumpctl info "$CORE_TEST_BIN"
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coredumpctl info /foo /bar/ /baz "$CORE_TEST_BIN"
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coredumpctl info "${CORE_TEST_BIN##*/}"
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coredumpctl info foo bar baz "${CORE_TEST_BIN##*/}"
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coredumpctl info COREDUMP_EXE="$CORE_TEST_BIN"
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coredumpctl info COREDUMP_EXE=aaaaa COREDUMP_EXE= COREDUMP_EXE="$CORE_TEST_BIN"
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coredumpctl debug --debugger=/bin/true "$CORE_TEST_BIN"
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SYSTEMD_DEBUGGER=/bin/true coredumpctl debug "$CORE_TEST_BIN"
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coredumpctl debug --debugger=/bin/true --debugger-arguments="-this --does --not 'do anything' -a -t --all" "${CORE_TEST_BIN##*/}"
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coredumpctl dump "$CORE_TEST_BIN" >/tmp/core.redirected
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test -s /tmp/core.redirected
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coredumpctl dump -o /tmp/core.output "${CORE_TEST_BIN##*/}"
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test -s /tmp/core.output
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rm -f /tmp/core.{output,redirected}
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# Unprivileged stuff
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# Related issue: https://github.com/systemd/systemd/issues/26912
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UNPRIV_CMD=(systemd-run --user --wait --pipe -M "testuser@.host" --)
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# Trigger a couple of coredumps as an unprivileged user
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"${UNPRIV_CMD[@]}" "$MAKE_DUMP_SCRIPT" "$CORE_TEST_UNPRIV_BIN" "SIGTRAP"
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"${UNPRIV_CMD[@]}" "$MAKE_DUMP_SCRIPT" "$CORE_TEST_UNPRIV_BIN" "SIGABRT"
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# In the tests we store the coredumps in journals, so let's generate a couple
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# with Storage=external as well
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mkdir -p /run/systemd/coredump.conf.d/
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printf '[Coredump]\nStorage=external' >/run/systemd/coredump.conf.d/99-external.conf
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"${UNPRIV_CMD[@]}" "$MAKE_DUMP_SCRIPT" "$CORE_TEST_UNPRIV_BIN" "SIGTRAP"
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"${UNPRIV_CMD[@]}" "$MAKE_DUMP_SCRIPT" "$CORE_TEST_UNPRIV_BIN" "SIGABRT"
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rm -fv /run/systemd/coredump.conf.d/99-external.conf
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# Wait a bit for the coredumps to get processed
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timeout 30 bash -c "while [[ $(coredumpctl list -q --no-legend $CORE_TEST_UNPRIV_BIN | wc -l) -lt 4 ]]; do sleep 1; done"
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# root should see coredumps from both binaries
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coredumpctl info "$CORE_TEST_UNPRIV_BIN"
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coredumpctl info "${CORE_TEST_UNPRIV_BIN##*/}"
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# The test user should see only their own coredumps
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"${UNPRIV_CMD[@]}" coredumpctl
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"${UNPRIV_CMD[@]}" coredumpctl info "$CORE_TEST_UNPRIV_BIN"
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"${UNPRIV_CMD[@]}" coredumpctl info "${CORE_TEST_UNPRIV_BIN##*/}"
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(! "${UNPRIV_CMD[@]}" coredumpctl info --all "$CORE_TEST_BIN")
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(! "${UNPRIV_CMD[@]}" coredumpctl info --all "${CORE_TEST_BIN##*/}")
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# We should have a couple of externally stored coredumps
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"${UNPRIV_CMD[@]}" coredumpctl --field=COREDUMP_FILENAME | tee /tmp/coredumpctl.out
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grep "/var/lib/systemd/coredump/core" /tmp/coredumpctl.out
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rm -f /tmp/coredumpctl.out
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"${UNPRIV_CMD[@]}" coredumpctl debug --debugger=/bin/true "$CORE_TEST_UNPRIV_BIN"
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"${UNPRIV_CMD[@]}" coredumpctl debug --debugger=/bin/true --debugger-arguments="-this --does --not 'do anything' -a -t --all" "${CORE_TEST_UNPRIV_BIN##*/}"
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"${UNPRIV_CMD[@]}" coredumpctl dump "$CORE_TEST_UNPRIV_BIN" >/tmp/core.redirected
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test -s /tmp/core.redirected
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"${UNPRIV_CMD[@]}" coredumpctl dump -o /tmp/core.output "${CORE_TEST_UNPRIV_BIN##*/}"
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test -s /tmp/core.output
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rm -f /tmp/core.{output,redirected}
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(! "${UNPRIV_CMD[@]}" coredumpctl dump "$CORE_TEST_BIN" >/dev/null)
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# --backtrace mode
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# Pass one of the existing journal coredump records to systemd-coredump and
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# use our PID as the source to make matching the coredump later easier
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# systemd-coredump args: PID UID GID SIGNUM TIMESTAMP CORE_SOFT_RLIMIT HOSTNAME
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journalctl -b -n 1 --output=export --output-fields=MESSAGE,COREDUMP COREDUMP_EXE="/usr/bin/test-dump" |
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/usr/lib/systemd/systemd-coredump --backtrace $$ 0 0 6 1679509994 12345 mymachine
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# Wait a bit for the coredump to get processed
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timeout 30 bash -c "while [[ $(coredumpctl list -q --no-legend $$ | wc -l) -eq 0 ]]; do sleep 1; done"
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coredumpctl info "$$"
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coredumpctl info COREDUMP_HOSTNAME="mymachine"
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(! coredumpctl --hello-world)
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(! coredumpctl -n 0)
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(! coredumpctl -n -1)
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(! coredumpctl --file=/dev/null)
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(! coredumpctl --since=0)
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(! coredumpctl --until='')
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(! coredumpctl --since=today --until=yesterday)
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(! coredumpctl --directory=/ --root=/)
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(! coredumpctl --json=foo)
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(! coredumpctl -F foo -F bar)
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(! coredumpctl list 0)
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(! coredumpctl list -- -1)
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(! coredumpctl list '')
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(! coredumpctl info /../.~=)
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(! coredumpctl info '')
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(! coredumpctl dump --output=/dev/full "$CORE_TEST_BIN")
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(! coredumpctl dump --output=/dev/null --output=/dev/null "$CORE_TEST_BIN")
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(! coredumpctl debug --debugger=/bin/false)
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(! coredumpctl debug --debugger=/bin/true --debugger-arguments='"')
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