utils

Documentation

Index

• func GetCPUCount() (int, error)
• func GetCPUCountFromProc() (int, error)
• func GetCPUCountFromSysDevices() (int, error)
• func GetLinuxKernelVersion() (*version.Version, error)
• func LoadEBPFObjects(spec *ebpf.CollectionSpec, to interface{}, opts *ebpf.CollectionOptions) error
• func SupportsContextPropagation() bool
• type KernelLockdown
  • func KernelLockdownMode() KernelLockdown

Functions

func GetCPUCount

func GetCPUCount() (int, error)

func GetCPUCountFromProc

func GetCPUCountFromProc() (int, error)

func GetCPUCountFromSysDevices

func GetCPUCountFromSysDevices() (int, error)

func GetLinuxKernelVersion

func GetLinuxKernelVersion() (*version.Version, error)

parse logic adapted from https://github.com/golang/go/blob/go1.21.3/src/internal/syscall/unix/kernel_version_linux.go

func LoadEBPFObjects

func LoadEBPFObjects(spec *ebpf.CollectionSpec, to interface{}, opts *ebpf.CollectionOptions) error

LoadEBPFObjects loads eBPF objects from the given spec into the given interface. If the environment variable OTEL_GO_AUTO_SHOW_VERIFIER_LOG is set to true, the verifier log will be printed.

func SupportsContextPropagation

func SupportsContextPropagation() bool

Does kernel version check and /sys/kernel/security/lockdown inspection to determine if it's safe to use bpf_probe_write_user.

Types

type KernelLockdown

type KernelLockdown uint8

const (
	KernelLockdownNone            KernelLockdown = iota + 1 // Linux Kernel security lockdown mode [none]
	KernelLockdownIntegrity                                 // Linux Kernel security lockdown mode [integrity]
	KernelLockdownConfidentiality                           // Linux Kernel security lockdown mode [confidentiality]
	KernelLockdownOther                                     // Linux Kernel security lockdown mode unknown
)

func KernelLockdownMode

func KernelLockdownMode() KernelLockdown