1 files changed, 76 insertions, 0 deletions
diff --git a/vendor/github.com/cilium/ebpf/link/program.go b/vendor/github.com/cilium/ebpf/link/program.go
new file mode 100644
index 000000000..0fe9d37c4
--- /dev/null
+++ b/vendor/github.com/cilium/ebpf/link/program.go
@@ -0,0 +1,76 @@
+package link
+
+import (
+	"fmt"
+
+	"github.com/cilium/ebpf"
+	"github.com/cilium/ebpf/internal"
+)
+
+type RawAttachProgramOptions struct {
+	// File descriptor to attach to. This differs for each attach type.
+	Target int
+	// Program to attach.
+	Program *ebpf.Program
+	// Program to replace (cgroups).
+	Replace *ebpf.Program
+	// Attach must match the attach type of Program (and Replace).
+	Attach ebpf.AttachType
+	// Flags control the attach behaviour. This differs for each attach type.
+	Flags uint32
+}
+
+// RawAttachProgram is a low level wrapper around BPF_PROG_ATTACH.
+//
+// You should use one of the higher level abstractions available in this
+// package if possible.
+func RawAttachProgram(opts RawAttachProgramOptions) error {
+	if err := haveProgAttach(); err != nil {
+		return err
+	}
+
+	var replaceFd uint32
+	if opts.Replace != nil {
+		replaceFd = uint32(opts.Replace.FD())
+	}
+
+	attr := internal.BPFProgAttachAttr{
+		TargetFd:     uint32(opts.Target),
+		AttachBpfFd:  uint32(opts.Program.FD()),
+		ReplaceBpfFd: replaceFd,
+		AttachType:   uint32(opts.Attach),
+		AttachFlags:  uint32(opts.Flags),
+	}
+
+	if err := internal.BPFProgAttach(&attr); err != nil {
+		return fmt.Errorf("can't attach program: %s", err)
+	}
+	return nil
+}
+
+type RawDetachProgramOptions struct {
+	Target  int
+	Program *ebpf.Program
+	Attach  ebpf.AttachType
+}
+
+// RawDetachProgram is a low level wrapper around BPF_PROG_DETACH.
+//
+// You should use one of the higher level abstractions available in this
+// package if possible.
+func RawDetachProgram(opts RawDetachProgramOptions) error {
+	if err := haveProgAttach(); err != nil {
+		return err
+	}
+
+	attr := internal.BPFProgDetachAttr{
+		TargetFd:    uint32(opts.Target),
+		AttachBpfFd: uint32(opts.Program.FD()),
+		AttachType:  uint32(opts.Attach),
+	}
+	if err := internal.BPFProgDetach(&attr); err != nil {
+		return fmt.Errorf("can't detach program: %s", err)
+	}
+
+	return nil
+}