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62 lines
2.8 KiB
Rust
62 lines
2.8 KiB
Rust
use aya::{maps::Array, programs::UProbe, util::KernelVersion, BpfLoader, Btf, Endianness};
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use test_case::test_case;
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#[test_case("enum_signed_32", false, Some((KernelVersion::new(6, 0, 0), "https://github.com/torvalds/linux/commit/6089fb3")), -0x7AAAAAAAi32 as u64)]
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#[test_case("enum_signed_32", true, Some((KernelVersion::new(6, 0, 0), "https://github.com/torvalds/linux/commit/6089fb3")), -0x7BBBBBBBi32 as u64)]
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#[test_case("enum_signed_64", false, Some((KernelVersion::new(6, 0, 0), "https://github.com/torvalds/linux/commit/6089fb3")), -0xAAAAAAABBBBBBBBi64 as u64)]
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#[test_case("enum_signed_64", true, Some((KernelVersion::new(6, 0, 0), "https://github.com/torvalds/linux/commit/6089fb3")), -0xCCCCCCCDDDDDDDDi64 as u64)]
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#[test_case("enum_unsigned_32", false, None, 0xAAAAAAAA)]
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#[test_case("enum_unsigned_32", true, None, 0xBBBBBBBB)]
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#[test_case("enum_unsigned_64", false, Some((KernelVersion::new(6, 0, 0), "https://github.com/torvalds/linux/commit/6089fb3")), 0xAAAAAAAABBBBBBBB)]
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#[test_case("enum_unsigned_64", true, Some((KernelVersion::new(6, 0, 0), "https://github.com/torvalds/linux/commit/6089fb3")), 0xCCCCCCCCDDDDDDDD)]
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#[test_case("field", false, None, 2)]
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#[test_case("field", true, None, 1)]
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#[test_case("pointer", false, None, 42)]
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#[test_case("pointer", true, None, 21)]
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#[test_case("struct_flavors", false, None, 1)]
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#[test_case("struct_flavors", true, None, 2)]
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fn relocation_tests(
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program: &str,
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with_relocations: bool,
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required_kernel_version: Option<(KernelVersion, &str)>,
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expected: u64,
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) {
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if let Some((required_kernel_version, commit)) = required_kernel_version {
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let current_kernel_version = KernelVersion::current().unwrap();
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if current_kernel_version < required_kernel_version {
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eprintln!("skipping test on kernel {current_kernel_version:?}, support for {program} was added in {required_kernel_version:?}; see {commit}");
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return;
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}
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}
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let mut bpf = BpfLoader::new()
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.btf(
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with_relocations
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.then(|| Btf::parse(crate::RELOC_BTF, Endianness::default()).unwrap())
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.as_ref(),
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)
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.load(crate::RELOC_BPF)
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.unwrap();
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let program: &mut UProbe = bpf.program_mut(program).unwrap().try_into().unwrap();
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program.load().unwrap();
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program
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.attach(
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Some("trigger_btf_relocations_program"),
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0,
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"/proc/self/exe",
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None,
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)
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.unwrap();
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trigger_btf_relocations_program();
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let output_map: Array<_, u64> = bpf.take_map("output_map").unwrap().try_into().unwrap();
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let key = 0;
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assert_eq!(output_map.get(&key, 0).unwrap(), expected)
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}
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#[no_mangle]
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#[inline(never)]
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pub extern "C" fn trigger_btf_relocations_program() {
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core::hint::black_box(trigger_btf_relocations_program);
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}
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