// Copyright 2018 The gVisor Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package fsutil

import (
	"unsafe"

	"gvisor.googlesource.com/gvisor/pkg/sentry/safemem"
)

func (*HostFileMapper) unsafeBlockFromChunkMapping(addr uintptr) safemem.Block {
	// We don't control the host file's length, so touching its mappings may
	// raise SIGBUS. Thus accesses to it must use safecopy.
	return safemem.BlockFromUnsafePointer((unsafe.Pointer)(addr), chunkSize)
}