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92 lines
4.7 KiB
Rust
92 lines
4.7 KiB
Rust
use aya::{Btf, EbpfLoader, Endianness, maps::Array, programs::UProbe, util::KernelVersion};
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use test_case::test_case;
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#[test_case(crate::ENUM_SIGNED_32_RELOC_BPF, None, Some((KernelVersion::new(6, 0, 0), "https://github.com/torvalds/linux/commit/6089fb3")), -0x7AAAAAAAi32 as u64)]
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#[test_case(crate::ENUM_SIGNED_32_RELOC_BPF, Some(crate::ENUM_SIGNED_32_RELOC_BTF), Some((KernelVersion::new(6, 0, 0), "https://github.com/torvalds/linux/commit/6089fb3")), -0x7BBBBBBBi32 as u64)]
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#[test_case(crate::ENUM_SIGNED_32_CHECKED_VARIANTS_RELOC_BPF, None, Some((KernelVersion::new(6, 0, 0), "https://github.com/torvalds/linux/commit/6089fb3")), -0x7AAAAAAAi32 as u64)]
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#[test_case(crate::ENUM_SIGNED_32_CHECKED_VARIANTS_RELOC_BPF, Some(crate::ENUM_SIGNED_32_CHECKED_VARIANTS_RELOC_BTF), Some((KernelVersion::new(6, 0, 0), "https://github.com/torvalds/linux/commit/6089fb3")), -0x7BBBBBBBi32 as u64)]
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#[test_case(crate::ENUM_SIGNED_64_RELOC_BPF, None, Some((KernelVersion::new(6, 0, 0), "https://github.com/torvalds/linux/commit/6089fb3")), -0xAAAAAAABBBBBBBBi64 as u64)]
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#[test_case(crate::ENUM_SIGNED_64_RELOC_BPF, Some(crate::ENUM_SIGNED_64_RELOC_BTF), Some((KernelVersion::new(6, 0, 0), "https://github.com/torvalds/linux/commit/6089fb3")), -0xCCCCCCCDDDDDDDDi64 as u64)]
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#[test_case(crate::ENUM_SIGNED_64_CHECKED_VARIANTS_RELOC_BPF, None, Some((KernelVersion::new(6, 0, 0), "https://github.com/torvalds/linux/commit/6089fb3")), -0xAAAAAAABBBBBBBi64 as u64)]
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#[test_case(crate::ENUM_SIGNED_64_CHECKED_VARIANTS_RELOC_BPF, Some(crate::ENUM_SIGNED_64_CHECKED_VARIANTS_RELOC_BTF), Some((KernelVersion::new(6, 0, 0), "https://github.com/torvalds/linux/commit/6089fb3")), -0xCCCCCCCDDDDDDDi64 as u64)]
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#[test_case(crate::ENUM_UNSIGNED_32_RELOC_BPF, None, None, 0xAAAAAAAA)]
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#[test_case(
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crate::ENUM_UNSIGNED_32_RELOC_BPF,
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Some(crate::ENUM_UNSIGNED_32_RELOC_BTF),
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None,
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0xBBBBBBBB
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)]
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#[test_case(
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crate::ENUM_UNSIGNED_32_CHECKED_VARIANTS_RELOC_BPF,
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None,
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None,
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0xAAAAAAAA
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)]
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#[test_case(
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crate::ENUM_UNSIGNED_32_CHECKED_VARIANTS_RELOC_BPF,
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Some(crate::ENUM_UNSIGNED_32_CHECKED_VARIANTS_RELOC_BTF),
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None,
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0xBBBBBBBB
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)]
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#[test_case(crate::ENUM_UNSIGNED_64_RELOC_BPF, None, Some((KernelVersion::new(6, 0, 0), "https://github.com/torvalds/linux/commit/6089fb3")), 0xAAAAAAAABBBBBBBB)]
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#[test_case(crate::ENUM_UNSIGNED_64_RELOC_BPF, Some(crate::ENUM_UNSIGNED_64_RELOC_BTF), Some((KernelVersion::new(6, 0, 0), "https://github.com/torvalds/linux/commit/6089fb3")), 0xCCCCCCCCDDDDDDDD)]
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#[test_case(crate::ENUM_UNSIGNED_64_CHECKED_VARIANTS_RELOC_BPF, None, Some((KernelVersion::new(6, 0, 0), "https://github.com/torvalds/linux/commit/6089fb3")), 0xAAAAAAAABBBBBBBB)]
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#[test_case(crate::ENUM_UNSIGNED_64_CHECKED_VARIANTS_RELOC_BPF, Some(crate::ENUM_UNSIGNED_64_CHECKED_VARIANTS_RELOC_BTF), Some((KernelVersion::new(6, 0, 0), "https://github.com/torvalds/linux/commit/6089fb3")), 0xCCCCCCCCDDDDDDDD)]
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#[test_case(crate::FIELD_RELOC_BPF, None, None, 2)]
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#[test_case(crate::FIELD_RELOC_BPF, Some(crate::FIELD_RELOC_BTF), None, 1)]
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#[test_case(crate::POINTER_RELOC_BPF, None, None, 42)]
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#[test_case(crate::POINTER_RELOC_BPF, Some(crate::POINTER_RELOC_BTF), None, 21)]
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#[test_case(crate::STRUCT_FLAVORS_RELOC_BPF, None, None, 1)]
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#[test_case(
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crate::STRUCT_FLAVORS_RELOC_BPF,
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Some(crate::STRUCT_FLAVORS_RELOC_BTF),
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None,
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2
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)]
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#[test_log::test]
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fn relocation_tests(
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bpf: &[u8],
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btf: Option<&[u8]>,
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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!(
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"skipping test on kernel {current_kernel_version:?}, support was added in {required_kernel_version:?}; see {commit}"
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);
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return;
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}
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}
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let mut bpf = EbpfLoader::new()
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.btf(
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btf.map(|btf| Btf::parse(btf, Endianness::default()).unwrap())
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.as_ref(),
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)
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.load(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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"trigger_btf_relocations_program",
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"/proc/self/exe",
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None,
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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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#[unsafe(no_mangle)]
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#[inline(never)]
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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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