func (decoderData *decoderData) addFile(header *tar.Header,
parent *filesystem.Directory, name string) error {
var newInode filesystem.Inode
if header.Typeflag == tar.TypeChar {
newInode.Mode = filesystem.FileMode((header.Mode & ^syscall.S_IFMT) |
syscall.S_IFCHR)
} else if header.Typeflag == tar.TypeBlock {
newInode.Mode = filesystem.FileMode((header.Mode & ^syscall.S_IFMT) |
syscall.S_IFBLK)
} else if header.Typeflag == tar.TypeFifo {
newInode.Mode = filesystem.FileMode((header.Mode & ^syscall.S_IFMT) |
syscall.S_IFIFO)
} else {
return errors.New(fmt.Sprintf("unsupported type: %v", header.Typeflag))
}
newInode.Uid = uint32(header.Uid)
newInode.Gid = uint32(header.Gid)
newInode.MtimeNanoSeconds = int32(header.ModTime.Nanosecond())
newInode.MtimeSeconds = header.ModTime.Unix()
if header.Devminor > 255 {
return errors.New(fmt.Sprintf("minor device number: %d too large",
header.Devminor))
}
newInode.Rdev = uint64(header.Devmajor<<8 | header.Devminor)
decoderData.inodeTable[header.Name] = decoderData.nextInodeNumber
decoderData.fileSystem.InodeTable[decoderData.nextInodeNumber] =
&newInode
var newEntry filesystem.File
newEntry.Name = name
newEntry.InodeNumber = decoderData.nextInodeNumber
parent.FileList = append(parent.FileList, &newEntry)
decoderData.nextInodeNumber++
return nil
}
func addFile(directory *filesystem.Directory, fileSystem, oldFS *FileSystem,
name string, directoryPathName string, stat *syscall.Stat_t) error {
inode, isNewInode := fileSystem.getInode(stat)
var file filesystem.File
file.Name = name
file.InodeNumber = stat.Ino
file.SetInode(inode)
if isNewInode {
err := scanFile(&file, fileSystem, directoryPathName)
if err != nil {
return err
}
if oldFS != nil && oldFS.InodeTable != nil {
if oldInode, found := oldFS.InodeTable[stat.Ino]; found {
if filesystem.CompareInodes(inode, oldInode, nil) {
inode = oldInode
file.SetInode(inode)
fileSystem.InodeTable[stat.Ino] = inode
}
}
}
}
directory.FileList = append(directory.FileList, &file)
return nil
}
func (decoderData *decoderData) addHardlink(header *tar.Header,
parent *filesystem.Directory, name string) error {
header.Linkname = normaliseFilename(header.Linkname)
if inum, ok := decoderData.regularInodeTable[header.Linkname]; ok {
var newEntry filesystem.RegularFile
newEntry.Name = name
newEntry.InodeNumber = inum
parent.RegularFileList = append(parent.RegularFileList, &newEntry)
} else if inum, ok := decoderData.symlinkInodeTable[header.Linkname]; ok {
var newEntry filesystem.Symlink
newEntry.Name = name
newEntry.InodeNumber = inum
parent.SymlinkList = append(parent.SymlinkList, &newEntry)
} else if inum, ok := decoderData.inodeTable[header.Linkname]; ok {
var newEntry filesystem.File
newEntry.Name = name
newEntry.InodeNumber = inum
parent.FileList = append(parent.FileList, &newEntry)
} else {
return errors.New(fmt.Sprintf("missing hardlink target: %s",
header.Linkname))
}
return nil
}