diff options
Diffstat (limited to 'vendor/github.com/cilium/ebpf/link/raw_tracepoint.go')
-rw-r--r-- | vendor/github.com/cilium/ebpf/link/raw_tracepoint.go | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/vendor/github.com/cilium/ebpf/link/raw_tracepoint.go b/vendor/github.com/cilium/ebpf/link/raw_tracepoint.go new file mode 100644 index 000000000..65652486f --- /dev/null +++ b/vendor/github.com/cilium/ebpf/link/raw_tracepoint.go @@ -0,0 +1,57 @@ +package link + +import ( + "fmt" + + "github.com/cilium/ebpf" + "github.com/cilium/ebpf/internal" +) + +type RawTracepointOptions struct { + // Tracepoint name. + Name string + // Program must be of type RawTracepoint* + Program *ebpf.Program +} + +// AttachRawTracepoint links a BPF program to a raw_tracepoint. +// +// Requires at least Linux 4.17. +func AttachRawTracepoint(opts RawTracepointOptions) (Link, error) { + if t := opts.Program.Type(); t != ebpf.RawTracepoint && t != ebpf.RawTracepointWritable { + return nil, fmt.Errorf("invalid program type %s, expected RawTracepoint(Writable)", t) + } + if opts.Program.FD() < 0 { + return nil, fmt.Errorf("invalid program: %w", internal.ErrClosedFd) + } + + fd, err := bpfRawTracepointOpen(&bpfRawTracepointOpenAttr{ + name: internal.NewStringPointer(opts.Name), + fd: uint32(opts.Program.FD()), + }) + if err != nil { + return nil, err + } + + return &progAttachRawTracepoint{fd: fd}, nil +} + +type progAttachRawTracepoint struct { + fd *internal.FD +} + +var _ Link = (*progAttachRawTracepoint)(nil) + +func (rt *progAttachRawTracepoint) isLink() {} + +func (rt *progAttachRawTracepoint) Close() error { + return rt.fd.Close() +} + +func (rt *progAttachRawTracepoint) Update(_ *ebpf.Program) error { + return fmt.Errorf("can't update raw_tracepoint: %w", ErrNotSupported) +} + +func (rt *progAttachRawTracepoint) Pin(_ string) error { + return fmt.Errorf("can't pin raw_tracepoint: %w", ErrNotSupported) +} |