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This is a simple test to check that loading and dumping metadata in btftool works, whether or not metadata contents are used by the program. A C test is also added to make sure the skeleton code can read the metadata values. Signed-off-by: YiFei Zhu <zhuyifei@google.com> Signed-off-by: Stanislav Fomichev <sdf@google.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Andrii Nakryiko <andriin@fb.com> Cc: YiFei Zhu <zhuyifei1999@gmail.com> Link: https://lore.kernel.org/bpf/20200915234543.3220146-6-sdf@google.com
82 lines
1.6 KiB
Bash
Executable file
82 lines
1.6 KiB
Bash
Executable file
#!/bin/sh
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# SPDX-License-Identifier: GPL-2.0
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# Kselftest framework requirement - SKIP code is 4.
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ksft_skip=4
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TESTNAME=bpftool_metadata
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BPF_FS=$(awk '$3 == "bpf" {print $2; exit}' /proc/mounts)
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BPF_DIR=$BPF_FS/test_$TESTNAME
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_cleanup()
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{
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set +e
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rm -rf $BPF_DIR 2> /dev/null
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}
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cleanup_skip()
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{
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echo "selftests: $TESTNAME [SKIP]"
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_cleanup
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exit $ksft_skip
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}
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cleanup()
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{
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if [ "$?" = 0 ]; then
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echo "selftests: $TESTNAME [PASS]"
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else
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echo "selftests: $TESTNAME [FAILED]"
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fi
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_cleanup
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}
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if [ $(id -u) -ne 0 ]; then
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echo "selftests: $TESTNAME [SKIP] Need root privileges"
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exit $ksft_skip
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fi
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if [ -z "$BPF_FS" ]; then
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echo "selftests: $TESTNAME [SKIP] Could not run test without bpffs mounted"
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exit $ksft_skip
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fi
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if ! bpftool version > /dev/null 2>&1; then
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echo "selftests: $TESTNAME [SKIP] Could not run test without bpftool"
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exit $ksft_skip
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fi
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set -e
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trap cleanup_skip EXIT
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mkdir $BPF_DIR
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trap cleanup EXIT
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bpftool prog load metadata_unused.o $BPF_DIR/unused
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METADATA_PLAIN="$(bpftool prog)"
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echo "$METADATA_PLAIN" | grep 'a = "foo"' > /dev/null
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echo "$METADATA_PLAIN" | grep 'b = 1' > /dev/null
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bpftool prog --json | grep '"metadata":{"a":"foo","b":1}' > /dev/null
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bpftool map | grep 'metadata.rodata' > /dev/null
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rm $BPF_DIR/unused
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bpftool prog load metadata_used.o $BPF_DIR/used
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METADATA_PLAIN="$(bpftool prog)"
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echo "$METADATA_PLAIN" | grep 'a = "bar"' > /dev/null
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echo "$METADATA_PLAIN" | grep 'b = 2' > /dev/null
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bpftool prog --json | grep '"metadata":{"a":"bar","b":2}' > /dev/null
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bpftool map | grep 'metadata.rodata' > /dev/null
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rm $BPF_DIR/used
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exit 0
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