da60cdbcb7
1.2.1: Bug fix release: Single bug fix (#1) that fixes regression in `perf` tool caused by libbpf resetting its custom catch-all `SEC()` handler on explicit `bpf_program__set_type()` call. Given setting custom `SEC()` handlers is rarely used and pretty esoteric feature of libbpf, most users should not be affected. 1.2.2: One more fix: - Fix (#2) possible double-free in USDT-related libbpf code, which happens when libbpf runs out of space in `__bpf_usdt_specs` map due to having too many unique USDT specs. Running out of space can be mitigated by bumping up `BPF_USDT_MAX_SPEC_CNT` define before including `bpf/usdt.bpf.h` header in BPF-side code. This will prevent the double-free as a side effect (and will make it possible to successfully attach all requested USDTs), which is a recommended work-around for libbpf versions prior to v1.2.2. Link:e4d3827e5d#1 Link:f117080307#2
50 lines
1.2 KiB
Nix
50 lines
1.2 KiB
Nix
{ fetchFromGitHub
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, elfutils
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, pkg-config
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, stdenv
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, zlib
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, lib
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, nixosTests
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}:
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stdenv.mkDerivation rec {
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pname = "libbpf";
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version = "1.2.2";
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src = fetchFromGitHub {
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owner = "libbpf";
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repo = "libbpf";
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rev = "v${version}";
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sha256 = "sha256-SDDdz2HKEfzHloLkb0sv5ldTo+1yJDVc9O7nj4Cjznk=";
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};
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nativeBuildInputs = [ pkg-config ];
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buildInputs = [ elfutils zlib ];
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enableParallelBuilding = true;
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makeFlags = [ "PREFIX=$(out)" "-C src" ];
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passthru.tests = {
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bpf = nixosTests.bpf;
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};
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postInstall = ''
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# install linux's libbpf-compatible linux/btf.h
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install -Dm444 include/uapi/linux/*.h -t $out/include/linux
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'';
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# FIXME: Multi-output requires some fixes to the way the pkg-config file is
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# constructed (it gets put in $out instead of $dev for some reason, with
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# improper paths embedded). Don't enable it for now.
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# outputs = [ "out" "dev" ];
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meta = with lib; {
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description = "Upstream mirror of libbpf";
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homepage = "https://github.com/libbpf/libbpf";
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license = with licenses; [ lgpl21 /* or */ bsd2 ];
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maintainers = with maintainers; [ thoughtpolice vcunat saschagrunert martinetd ];
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platforms = platforms.linux;
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};
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}
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