tracing

Documentation

Overview

SPDX-License-Identifier: Apache-2.0 Copyright Authors of Tetragon

Index

• Constants
• Variables
• func GetLoaderSensor() *sensors.Sensor
• func LoadGenericTracepointSensor(bpfDir, mapDir string, load *program.Program, version, verbose int) error
• func ReadArgBytes(r *bytes.Reader, index int) (*api.MsgGenericKprobeArgBytes, error)
• func ReloadGenericKprobeSelectors(kpSensor *sensors.Sensor, conf *v1alpha1.KProbeSpec) error
• func ReloadGenericTracepointSelectors(p *program.Program, conf *v1alpha1.TracepointSpec) error
• type BinaryMapKey
  • func (k *BinaryMapKey) DeepCopyMapKey() bpf.MapKey
  • func (k *BinaryMapKey) GetKeyPtr() unsafe.Pointer
  • func (k *BinaryMapKey) NewValue() bpf.MapValue
  • func (k *BinaryMapKey) String() string
• type BinaryMapValue
  • func (v *BinaryMapValue) DeepCopyMapValue() bpf.MapValue
  • func (v *BinaryMapValue) GetValuePtr() unsafe.Pointer
  • func (v *BinaryMapValue) NewValue() bpf.MapValue
  • func (v *BinaryMapValue) String() string
• type GenericTracepointConf

Constants

const (
	CharBufErrorENOMEM      = -1
	CharBufErrorPageFault   = -2
	CharBufErrorTooLarge    = -3
	CharBufSavedForRetprobe = -4

	MaxKprobesMulti = 100 // MAX_ENTRIES_CONFIG in bpf code
)

Variables

var (
	MaxFilterIntArgs = 8
)

Functions

func GetLoaderSensor

func GetLoaderSensor() *sensors.Sensor

func LoadGenericTracepointSensor

func LoadGenericTracepointSensor(bpfDir, mapDir string, load *program.Program, version, verbose int) error

func ReadArgBytes

func ReadArgBytes(r *bytes.Reader, index int) (*api.MsgGenericKprobeArgBytes, error)

func ReloadGenericKprobeSelectors

func ReloadGenericKprobeSelectors(kpSensor *sensors.Sensor, conf *v1alpha1.KProbeSpec) error

ReloadGenericKprobeSelectors will reload a kprobe by unlinking it, generating new selector data and updating filter_map, and then relinking the kprobe (entry).

This is intended for speeding up testing, so DO NOT USE elsewhere without checking its implementation first because limitations may exist (e.g,. the config map is not updated, the retprobe is not reloaded, userspace return filters are not updated, etc.).

func ReloadGenericTracepointSelectors

func ReloadGenericTracepointSelectors(p *program.Program, conf *v1alpha1.TracepointSpec) error

ReloadGenericTracepointSelectors will reload a tracepoint by unlinking it, generating new selector data and updating filter_map, and then relinking the tracepoint.

This is intended for speeding up testing, so DO NOT USE elsewhere without checking its implementation first because limitations may exist (e.g., the config map is not updated). TODO: pass the sensor here

Types

type BinaryMapKey

type BinaryMapKey struct {
	PathName [256]byte
}

func (*BinaryMapKey) DeepCopyMapKey

func (k *BinaryMapKey) DeepCopyMapKey() bpf.MapKey

func (*BinaryMapKey) GetKeyPtr

func (k *BinaryMapKey) GetKeyPtr() unsafe.Pointer

func (*BinaryMapKey) NewValue

func (k *BinaryMapKey) NewValue() bpf.MapValue

func (*BinaryMapKey) String

func (k *BinaryMapKey) String() string

type BinaryMapValue

type BinaryMapValue struct {
	Id uint32
}

func (*BinaryMapValue) DeepCopyMapValue

func (v *BinaryMapValue) DeepCopyMapValue() bpf.MapValue

func (*BinaryMapValue) GetValuePtr

func (v *BinaryMapValue) GetValuePtr() unsafe.Pointer

func (*BinaryMapValue) NewValue

func (v *BinaryMapValue) NewValue() bpf.MapValue

func (*BinaryMapValue) String

func (v *BinaryMapValue) String() string

type GenericTracepointConf

type GenericTracepointConf = v1alpha1.TracepointSpec

GenericTracepointConf is the configuration for a generic tracepoint. This is a caller-defined structure that configures a tracepoint.