func (sub *Sub) getFileToCopy(myPathName string,
hashVal hash.Hash) subproto.FileToCopyToCache {
subFS := sub.FileSystem
requiredFS := sub.requiredFS
inos, ok := subFS.HashToInodesTable()[hashVal]
if !ok {
panic("No object in cache for: " + myPathName)
}
file := subproto.FileToCopyToCache{
Name: subFS.InodeToFilenamesTable()[inos[0]][0],
Hash: hashVal,
}
// Try to find an inode where all its links will be deleted and mark one of
// the links (filenames) to be hardlinked instead of copied into the cache.
for _, iNum := range inos {
filenames := subFS.InodeToFilenamesTable()[iNum]
for _, filename := range filenames {
if _, ok := requiredFS.FilenameToInodeTable()[filename]; ok {
filenames = nil
break
}
if sub.filter == nil || sub.filter.Match(filename) {
filenames = nil
break
}
}
if filenames != nil {
file.DoHardlink = true
break
}
}
return file
}
