5387747e92
Bumps [github.com/containerd/cgroups/v3](https://github.com/containerd/cgroups) from 3.0.2 to 3.0.3. - [Release notes](https://github.com/containerd/cgroups/releases) - [Commits](https://github.com/containerd/cgroups/compare/v3.0.2...v3.0.3) --- updated-dependencies: - dependency-name: github.com/containerd/cgroups/v3 dependency-type: direct:production update-type: version-update:semver-patch ... Signed-off-by: dependabot[bot] <support@github.com>
83 lines
3.4 KiB
Markdown
83 lines
3.4 KiB
Markdown
# eBPF
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[](https://pkg.go.dev/github.com/cilium/ebpf)
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ebpf-go is a pure Go library that provides utilities for loading, compiling, and
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debugging eBPF programs. It has minimal external dependencies and is intended to
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be used in long running processes.
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See [ebpf.io](https://ebpf.io) for complementary projects from the wider eBPF
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ecosystem.
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## Getting Started
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A small collection of Go and eBPF programs that serve as examples for building
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your own tools can be found under [examples/](examples/).
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[Contributions](CONTRIBUTING.md) are highly encouraged, as they highlight certain use cases of
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eBPF and the library, and help shape the future of the project.
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## Getting Help
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The community actively monitors our [GitHub Discussions](https://github.com/cilium/ebpf/discussions) page.
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Please search for existing threads before starting a new one. Refrain from
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opening issues on the bug tracker if you're just starting out or if you're not
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sure if something is a bug in the library code.
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Alternatively, [join](https://ebpf.io/slack) the
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[#ebpf-go](https://cilium.slack.com/messages/ebpf-go) channel on Slack if you
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have other questions regarding the project. Note that this channel is ephemeral
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and has its history erased past a certain point, which is less helpful for
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others running into the same problem later.
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## Packages
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This library includes the following packages:
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* [asm](https://pkg.go.dev/github.com/cilium/ebpf/asm) contains a basic
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assembler, allowing you to write eBPF assembly instructions directly
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within your Go code. (You don't need to use this if you prefer to write your eBPF program in C.)
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* [cmd/bpf2go](https://pkg.go.dev/github.com/cilium/ebpf/cmd/bpf2go) allows
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compiling and embedding eBPF programs written in C within Go code. As well as
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compiling the C code, it auto-generates Go code for loading and manipulating
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the eBPF program and map objects.
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* [link](https://pkg.go.dev/github.com/cilium/ebpf/link) allows attaching eBPF
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to various hooks
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* [perf](https://pkg.go.dev/github.com/cilium/ebpf/perf) allows reading from a
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`PERF_EVENT_ARRAY`
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* [ringbuf](https://pkg.go.dev/github.com/cilium/ebpf/ringbuf) allows reading from a
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`BPF_MAP_TYPE_RINGBUF` map
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* [features](https://pkg.go.dev/github.com/cilium/ebpf/features) implements the equivalent
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of `bpftool feature probe` for discovering BPF-related kernel features using native Go.
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* [rlimit](https://pkg.go.dev/github.com/cilium/ebpf/rlimit) provides a convenient API to lift
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the `RLIMIT_MEMLOCK` constraint on kernels before 5.11.
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* [btf](https://pkg.go.dev/github.com/cilium/ebpf/btf) allows reading the BPF Type Format.
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## Requirements
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* A version of Go that is [supported by
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upstream](https://golang.org/doc/devel/release.html#policy)
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* Linux >= 4.9. CI is run against kernel.org LTS releases. 4.4 should work but is
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not tested against.
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## Regenerating Testdata
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Run `make` in the root of this repository to rebuild testdata in all
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subpackages. This requires Docker, as it relies on a standardized build
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environment to keep the build output stable.
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It is possible to regenerate data using Podman by overriding the `CONTAINER_*`
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variables: `CONTAINER_ENGINE=podman CONTAINER_RUN_ARGS= make`.
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The toolchain image build files are kept in [testdata/docker/](testdata/docker/).
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## License
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MIT
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### eBPF Gopher
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The eBPF honeygopher is based on the Go gopher designed by Renee French.
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