mirror of
https://github.com/morgan9e/systemd
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5c60d3011f
We passes log level through kernel command line. It is not necessary to set to debug level at the beginning, and set to info at the end. This is important when a test has several subtests. If a subtest sets log level to info at the end, then subsequent tests may not generate any useful logs.
65 lines
1.5 KiB
Bash
Executable File
65 lines
1.5 KiB
Bash
Executable File
#!/usr/bin/env bash
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# SPDX-License-Identifier: LGPL-2.1-or-later
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set -ex
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set -o pipefail
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# We not just test if the file exists, but try to read from it, since if
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# CONFIG_PSI_DEFAULT_DISABLED is set in the kernel the file will exist and can
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# be opened, but any read()s will fail with EOPNOTSUPP, which we want to
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# detect.
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if ! cat /proc/pressure/memory >/dev/null ; then
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echo "kernel too old, has no PSI." >&2
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echo OK >/testok
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exit 0
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fi
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CGROUP=/sys/fs/cgroup/"$(systemctl show TEST-79-MEMPRESS.service -P ControlGroup)"
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test -d "$CGROUP"
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if ! test -f "$CGROUP"/memory.pressure ; then
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echo "No memory accounting/PSI delegated via cgroup, can't test." >&2
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echo OK >/testok
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exit 0
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fi
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UNIT="test-mempress-$RANDOM.service"
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SCRIPT="/tmp/mempress-$RANDOM.sh"
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cat >"$SCRIPT" <<'EOF'
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#!/usr/bin/env bash
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set -ex
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export
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id
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test -n "$MEMORY_PRESSURE_WATCH"
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test "$MEMORY_PRESSURE_WATCH" != /dev/null
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test -w "$MEMORY_PRESSURE_WATCH"
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ls -al "$MEMORY_PRESSURE_WATCH"
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EXPECTED="$(echo -n -e "some 123000 2000000\x00" | base64)"
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test "$EXPECTED" = "$MEMORY_PRESSURE_WRITE"
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EOF
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chmod +x "$SCRIPT"
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systemd-run \
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-u "$UNIT" \
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-p Type=exec \
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-p ProtectControlGroups=1 \
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-p DynamicUser=1 \
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-p MemoryPressureWatch=on \
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-p MemoryPressureThresholdSec=123ms \
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-p BindPaths=$SCRIPT \
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`# Make sanitizers happy when DynamicUser=1 pulls in instrumented systemd NSS modules` \
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-p EnvironmentFile=-/usr/lib/systemd/systemd-asan-env \
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--wait "$SCRIPT"
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rm "$SCRIPT"
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touch /testok
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