Revert "Merge pull request 101888 from kolyshkin/update-runc-rc94"

This reverts commit b1b06fe0a4, reversing
changes made to 382a33986b.

vendor/github.com/cilium/ebpf/link/iter.go

@@ -1,67 +0,0 @@
-package link
-
-import (
-	"fmt"
-	"io"
-
-	"github.com/cilium/ebpf"
-)
-
-type IterOptions struct {
-	// Program must be of type Tracing with attach type
-	// AttachTraceIter. The kind of iterator to attach to is
-	// determined at load time via the AttachTo field.
-	//
-	// AttachTo requires the kernel to include BTF of itself,
-	// and it to be compiled with a recent pahole (>= 1.16).
-	Program *ebpf.Program
-}
-
-// AttachIter attaches a BPF seq_file iterator.
-func AttachIter(opts IterOptions) (*Iter, error) {
-	link, err := AttachRawLink(RawLinkOptions{
-		Program: opts.Program,
-		Attach:  ebpf.AttachTraceIter,
-	})
-	if err != nil {
-		return nil, fmt.Errorf("can't link iterator: %w", err)
-	}
-
-	return &Iter{*link}, err
-}
-
-// LoadPinnedIter loads a pinned iterator from a bpffs.
-func LoadPinnedIter(fileName string, opts *ebpf.LoadPinOptions) (*Iter, error) {
-	link, err := LoadPinnedRawLink(fileName, IterType, opts)
-	if err != nil {
-		return nil, err
-	}
-
-	return &Iter{*link}, err
-}
-
-// Iter represents an attached bpf_iter.
-type Iter struct {
-	RawLink
-}
-
-// Open creates a new instance of the iterator.
-//
-// Reading from the returned reader triggers the BPF program.
-func (it *Iter) Open() (io.ReadCloser, error) {
-	linkFd, err := it.fd.Value()
-	if err != nil {
-		return nil, err
-	}
-
-	attr := &bpfIterCreateAttr{
-		linkFd: linkFd,
-	}
-
-	fd, err := bpfIterCreate(attr)
-	if err != nil {
-		return nil, fmt.Errorf("can't create iterator: %w", err)
-	}
-
-	return fd.File("bpf_iter"), nil
-}