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-rw-r--r--vendor/github.com/cilium/ebpf/link/tracing.go141
1 files changed, 0 insertions, 141 deletions
diff --git a/vendor/github.com/cilium/ebpf/link/tracing.go b/vendor/github.com/cilium/ebpf/link/tracing.go
deleted file mode 100644
index e47e61a3b..000000000
--- a/vendor/github.com/cilium/ebpf/link/tracing.go
+++ /dev/null
@@ -1,141 +0,0 @@
-package link
-
-import (
- "fmt"
-
- "github.com/cilium/ebpf"
- "github.com/cilium/ebpf/btf"
- "github.com/cilium/ebpf/internal/sys"
-)
-
-type tracing struct {
- RawLink
-}
-
-func (f *tracing) Update(new *ebpf.Program) error {
- return fmt.Errorf("tracing update: %w", ErrNotSupported)
-}
-
-// AttachFreplace attaches the given eBPF program to the function it replaces.
-//
-// The program and name can either be provided at link time, or can be provided
-// at program load time. If they were provided at load time, they should be nil
-// and empty respectively here, as they will be ignored by the kernel.
-// Examples:
-//
-// AttachFreplace(dispatcher, "function", replacement)
-// AttachFreplace(nil, "", replacement)
-func AttachFreplace(targetProg *ebpf.Program, name string, prog *ebpf.Program) (Link, error) {
- if (name == "") != (targetProg == nil) {
- return nil, fmt.Errorf("must provide both or neither of name and targetProg: %w", errInvalidInput)
- }
- if prog == nil {
- return nil, fmt.Errorf("prog cannot be nil: %w", errInvalidInput)
- }
- if prog.Type() != ebpf.Extension {
- return nil, fmt.Errorf("eBPF program type %s is not an Extension: %w", prog.Type(), errInvalidInput)
- }
-
- var (
- target int
- typeID btf.TypeID
- )
- if targetProg != nil {
- btfHandle, err := targetProg.Handle()
- if err != nil {
- return nil, err
- }
- defer btfHandle.Close()
-
- spec, err := btfHandle.Spec(nil)
- if err != nil {
- return nil, err
- }
-
- var function *btf.Func
- if err := spec.TypeByName(name, &function); err != nil {
- return nil, err
- }
-
- target = targetProg.FD()
- typeID, err = spec.TypeID(function)
- if err != nil {
- return nil, err
- }
- }
-
- link, err := AttachRawLink(RawLinkOptions{
- Target: target,
- Program: prog,
- Attach: ebpf.AttachNone,
- BTF: typeID,
- })
- if err != nil {
- return nil, err
- }
-
- return &tracing{*link}, nil
-}
-
-type TracingOptions struct {
- // Program must be of type Tracing with attach type
- // AttachTraceFEntry/AttachTraceFExit/AttachModifyReturn or
- // AttachTraceRawTp.
- Program *ebpf.Program
-}
-
-type LSMOptions struct {
- // Program must be of type LSM with attach type
- // AttachLSMMac.
- Program *ebpf.Program
-}
-
-// attachBTFID links all BPF program types (Tracing/LSM) that they attach to a btf_id.
-func attachBTFID(program *ebpf.Program) (Link, error) {
- if program.FD() < 0 {
- return nil, fmt.Errorf("invalid program %w", sys.ErrClosedFd)
- }
-
- fd, err := sys.RawTracepointOpen(&sys.RawTracepointOpenAttr{
- ProgFd: uint32(program.FD()),
- })
- if err != nil {
- return nil, err
- }
-
- raw := RawLink{fd: fd}
- info, err := raw.Info()
- if err != nil {
- raw.Close()
- return nil, err
- }
-
- if info.Type == RawTracepointType {
- // Sadness upon sadness: a Tracing program with AttachRawTp returns
- // a raw_tracepoint link. Other types return a tracing link.
- return &rawTracepoint{raw}, nil
- }
-
- return &tracing{RawLink: RawLink{fd: fd}}, nil
-}
-
-// AttachTracing links a tracing (fentry/fexit/fmod_ret) BPF program or
-// a BTF-powered raw tracepoint (tp_btf) BPF Program to a BPF hook defined
-// in kernel modules.
-func AttachTracing(opts TracingOptions) (Link, error) {
- if t := opts.Program.Type(); t != ebpf.Tracing {
- return nil, fmt.Errorf("invalid program type %s, expected Tracing", t)
- }
-
- return attachBTFID(opts.Program)
-}
-
-// AttachLSM links a Linux security module (LSM) BPF Program to a BPF
-// hook defined in kernel modules.
-func AttachLSM(opts LSMOptions) (Link, error) {
- if t := opts.Program.Type(); t != ebpf.LSM {
- return nil, fmt.Errorf("invalid program type %s, expected LSM", t)
- }
-
- return attachBTFID(opts.Program)
-}