inject

package

v0.23.0 Latest Latest Go to latest Published: Sep 11, 2025 License: Apache-2.0 Imports: 9 Imported by: 0

Documentation ¶

Package inject provides types and functionality to extract offset information from target ELF and inject that data into eBPF probes.

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func Constants(spec *ebpf.CollectionSpec, opts ...Option) error

Constants injects key-values defined by opts into spec as constant. The keys are used as volatile const names and the values are the const values.

If duplicate or colliding Options are passed, the last one passed is used.

func FindOffset(id structfield.ID, info *process.Info) (structfield.OffsetKey, error)

func GetLatestOffset(id structfield.ID) (structfield.OffsetKey, *semver.Version)

func GetOffset(id structfield.ID, ver *semver.Version) (structfield.OffsetKey, bool)

type Option interface {
	// contains filtered or unexported methods
}

Option configures key-values to be injected into an ebpf.CollectionSpec.

func WithAllocation(alloc process.Allocation) Option

WithAllocation returns an option that will set "total_cpus", "start_addr", and "end_addr".

func WithKeyValue(key string, value interface{}) Option

WithKeyValue returns an option that will set key to value.

func WithOffset(key string, id structfield.ID, ver *semver.Version) Option

WithOffset returns an option that sets key to the offset value of the struct field defined by id at the specified version ver.

If the offset value is not known, an error is returned when the returned Option is used.