func CertificateRequestFromFile(file string) (*x509.CertificateRequest, error) {
	pemBlock, err := os.ReadFile(file)
	if err != nil {
		return nil, errors.Wrap(err, "failed to read file")
	}

	csr, err := parseCSRPEM(pemBlock)
	if err != nil {
		return nil, errors.Wrapf(err, "error reading certificate request file %s", file)
	}
	return csr, nil
}

// an error will be returned.
LogicalResult GetControlFlowAncestors(
    Operation* op, llvm::SmallPtrSetImpl<Operation*>& control_flow_ops,
    llvm::SmallPtrSetImpl<Block*>& control_flow_blocks) {
  Block* block = op->getBlock();
  Operation* parent = block->getParentOp();
  while (block && parent && !isa<func::FuncOp>(parent)) {
    if (!IsControlFlowOp(parent))
      return op->emitOpError()

      return false;
    }
    return parsed_device.has_type && parsed_device.type == kDeviceCPU;
  });
}

OpBuilder CreateBuilderAfterOp(Operation* op) {
  return OpBuilder(op->getBlock(), ++Block::iterator(op));
}

// Builds a TPUGetLayoutOp with the given compile op and input index.
TF::TPUGetLayoutOp BuildGetLayout(const int64_t execute_arg_index,

// blockPadding computes the number of bytes needed to pad offset up to the
// nearest block edge where 0 <= n < blockSize.
func blockPadding(offset int64) (n int64) {
	return -offset & (blockSize - 1)
}

var zeroBlock block

type block [blockSize]byte

// Convert block to any number of formats.
func (b *block) toV7() *headerV7       { return (*headerV7)(b) }
func (b *block) toGNU() *headerGNU     { return (*headerGNU)(b) }

		}
		certs = append(certs, getCert(t, string(data)))
	}
	return certs
}

func getCert(t *testing.T, pemData string) *x509.Certificate {
	t.Helper()

	pemBlock, _ := pem.Decode([]byte(pemData))
	cert, err := x509.ParseCertificate(pemBlock.Bytes)
	if err != nil {
		t.Fatalf("Error parsing cert: %v", err)
		return nil
	}
	return cert
}

						mem.Aux = t
						volatiles = append(volatiles, volatileCopy{val, tmpaddr})
					}
				}
			}
		}

		// Build branch point.
		bThen := f.NewBlock(BlockPlain)
		bEnd := f.NewBlock(b.Kind)
		bThen.Pos = pos
		bEnd.Pos = b.Pos
		b.Pos = pos

		// Set up control flow for end block.
		bEnd.CopyControls(b)
		bEnd.Likely = b.Likely
		for _, e := range b.Succs {

		return nil, timeoutErr
	}

	// "Creation of target_path is the responsibility of the SP."
	// Our plugin depends on it.
	if req.VolumeCapability.GetBlock() != nil {
		if err := os.WriteFile(req.TargetPath, []byte{}, 0644); err != nil {
			return nil, fmt.Errorf("cannot create target path %s for block file: %s", req.TargetPath, err)
		}
	} else {

		return nil, nil, err // EOF is okay here; exactly 0 bytes read
	}
	if bytes.Equal(tr.blk[:], zeroBlock[:]) {
		if _, err := io.ReadFull(tr.r, tr.blk[:]); err != nil {
			return nil, nil, err // EOF is okay here; exactly 1 block of zeros read
		}
		if bytes.Equal(tr.blk[:], zeroBlock[:]) {
			return nil, nil, io.EOF // normal EOF; exactly 2 block of zeros read
		}

		} else {
			return false
		}
	}

	return true
}

func machoreloc1(*sys.Arch, *ld.OutBuf, *loader.Loader, loader.Sym, loader.ExtReloc, int64) bool {
	return false
}

func pereloc1(arch *sys.Arch, out *ld.OutBuf, ldr *loader.Loader, s loader.Sym, r loader.ExtReloc, sectoff int64) bool {
	var v uint32

	rs := r.Xsym
	rt := r.Type

	if ldr.SymDynid(rs) < 0 {

	}
	for _, peerLock := range peerLocks {
		if peerLock == nil {
			continue
		}
		for k, v := range peerLock.Locks {
			for _, lockReqInfo := range v {
				if val, ok := entryMap[toEntry(lockReqInfo)]; ok {
					val.ServerList = append(val.ServerList, peerLock.Addr)
				} else {
					entryMap[toEntry(lockReqInfo)] = lriToLockEntry(lockReqInfo, now, k, peerLock.Addr)
				}
			}
		}
	}