Golang FileSystem.FilenameToInodeTable方法代码示例

func deleteUnneededFiles(srpcClient *srpc.Client, subFS *filesystem.FileSystem,
	imgFS *filesystem.FileSystem, logger *log.Logger) bool {
	startTime := showStart("compute early files to delete")
	pathsToDelete := make([]string, 0)
	imgHashToInodesTable := imgFS.HashToInodesTable()
	imgFilenameToInodeTable := imgFS.FilenameToInodeTable()
	for pathname, inum := range subFS.FilenameToInodeTable() {
		if inode, ok := subFS.InodeTable[inum].(*filesystem.RegularInode); ok {
			if inode.Size > 0 {
				if _, ok := imgHashToInodesTable[inode.Hash]; !ok {
					pathsToDelete = append(pathsToDelete, pathname)
				}
			} else {
				if _, ok := imgFilenameToInodeTable[pathname]; !ok {
					pathsToDelete = append(pathsToDelete, pathname)
				}
			}
		}
	}
	showTimeTaken(startTime)
	if len(pathsToDelete) < 1 {
		return false
	}
	updateRequest := sub.UpdateRequest{
		Wait:          true,
		PathsToDelete: pathsToDelete}
	var updateReply sub.UpdateResponse
	startTime = showStart("Subd.Update() for early files to delete")
	err := client.CallUpdate(srpcClient, updateRequest, &updateReply)
	showTimeTaken(startTime)
	if err != nil {
		logger.Println(err)
	}
	return true
}

func spliceComputedFiles(fs *filesystem.FileSystem) error {
	if *computedFiles == "" {
		return nil
	}
	computedFileList, err := loadComputedFiles(*computedFiles)
	if err != nil {
		return errors.New("cannot load computed files list from: " +
			*computedFiles + ": " + err.Error())
	}
	filenameToInodeTable := fs.FilenameToInodeTable()
	inodeToFilenamesTable := fs.InodeToFilenamesTable()
	for _, computedFile := range computedFileList {
		inum, ok := filenameToInodeTable[computedFile.Filename]
		if !ok {
			return errors.New(computedFile.Filename + ": missing from image")
		}
		if filenames, ok := inodeToFilenamesTable[inum]; !ok {
			panic(computedFile.Filename + ": no corresponding list of files")
		} else if len(filenames) != 1 {
			return fmt.Errorf("%s: multiple inodes: %d", computedFile.Filename,
				len(filenames))
		}
		if inode, ok :=
			fs.InodeTable[inum].(*filesystem.ComputedRegularInode); ok {
			inode.Source = computedFile.Source
			continue
		}
		if oldInode, ok := fs.InodeTable[inum].(*filesystem.RegularInode); !ok {
			return fmt.Errorf("%s: type: %T is not a regular inode",
				computedFile.Filename, fs.InodeTable[inum])
		} else {
			newInode := new(filesystem.ComputedRegularInode)
			newInode.Mode = oldInode.Mode
			newInode.Uid = oldInode.Uid
			newInode.Gid = oldInode.Gid
			newInode.Source = computedFile.Source
			fs.InodeTable[inum] = newInode
		}
	}
	fs.ComputeTotalDataBytes()
	clearInodePointers(&fs.DirectoryInode, "")
	return fs.RebuildInodePointers()
}

func layerImages(baseFS *filesystem.FileSystem,
	layerFS *filesystem.FileSystem) error {
	for filename, layerInum := range layerFS.FilenameToInodeTable() {
		layerInode := layerFS.InodeTable[layerInum]
		if _, ok := layerInode.(*filesystem.DirectoryInode); ok {
			continue
		}
		baseInum, ok := baseFS.FilenameToInodeTable()[filename]
		if !ok {
			return errors.New(filename + " missing in base image")
		}
		baseInode := baseFS.InodeTable[baseInum]
		sameType, sameMetadata, sameData := filesystem.CompareInodes(baseInode,
			layerInode, nil)
		if !sameType {
			return errors.New(filename + " changed type")
		}
		if sameMetadata && sameData {
			continue
		}
		baseFS.InodeTable[baseInum] = layerInode
	}
	return nil
}