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summary: Make sure we can generate core dumps on UC
details: |
Check it is possible to generate core dumps on UC. Make sure that dumps
are produced in little time in a place writable from snap context.
execute: |
# To get VERSION_ID defined
. /etc/os-release
cp -r "$TESTSLIB"/snaps/core-dump-snap .
core_dump_d=core-dump-snap
if [ "$VERSION_ID" = 16 ]; then
sed -i '/base: ##BASE##/d' "$core_dump_d"/meta/snap.yaml
else
BASE=core"$VERSION_ID"
sed -i "s/##BASE##/$BASE/" "$core_dump_d"/meta/snap.yaml
fi
# Install snap with a service that simply waits
DUMP_SNAP_FILE=core-dump-snap.snap
snap pack "$core_dump_d" --filename="$DUMP_SNAP_FILE"
snap install --dangerous "$DUMP_SNAP_FILE"
# Allow suid programs like snap-confine to produce a core dump
echo 1 > /proc/sys/fs/suid_dumpable
# Make sure that dumps are produced in a place writable from snap context
echo "/tmp/core.%p" > /proc/sys/kernel/core_pattern
CRASH_PID=$(retry --wait 1 -n 5 pgrep crash.sh)
kill -ABRT "$CRASH_PID"
# A core dump file should be generated in little time
retry --wait 1 -n 5 sh -c "stat /tmp/snap-private-tmp/snap.core-dump-snap/tmp/core.$CRASH_PID"
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