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Directorty table info parsing.

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Futher work on reading data.
This commit is contained in:
Caleb Gardner
2020-11-13 04:47:54 -06:00
parent f135457443
commit dbf7e9465a
9 changed files with 288 additions and 114 deletions
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internal/inode/processInode.go
+65 -62
View File
@@ -8,80 +8,83 @@ import (
)
const (
basicDirectory = iota + 1
basicFile
basicSymlink
basicBlockDevice
basicCharDevice
basicFifo
basicSocket
extendedDirectory
extendedFile
extendedSymlink
extendedBlockDevice
extendedCharDevice
extendedFifo
extendedSocket
//The inode type from inode.Common.InodeType
BasicDirectoryType = iota + 1
BasicFileType
BasicSymlinkType
BasicBlockDeviceType
BasicCharDeviceType
BasicFifoType
BasicSocketType
ExtendedDirectoryType
ExtendedFileType
ExtendedSymlinkType
ExtendedBlockDeviceType
ExtendedCharDeviceType
ExtendedFifoType
ExtendedSocketType
)
func ProcessInode(rdr *io.Reader) (*InodeCommon, interface{}, error) {
var inodeHeader InodeCommon
//ProcessInode processes the next inode in the given reader
func ProcessInode(rdr *io.Reader, blockSize uint32) (*Common, interface{}, error) {
var inodeHeader Common
err := binary.Read(*rdr, binary.LittleEndian, &inodeHeader)
if err != nil {
return nil, nil, err
}
switch inodeHeader.InodeType {
case basicDirectory:
case BasicDirectoryType:
var inode BasicDirectory
err = binary.Read(*rdr, binary.LittleEndian, &inode)
return &inodeHeader, &inode, err
case BasicFileType:
inode, err := NewBasicFile(rdr, blockSize)
return &inodeHeader, inode, err
case basicFile:
var inode BasicFile
err = binary.Read(*rdr, binary.LittleEndian, &inode)
return &inodeHeader, inode, err
case basicSymlink:
case BasicSymlinkType:
inode, err := NewBasicSymlink(rdr)
return &inodeHeader, inode, err
// case basicFile:
// var inode BasicFile
// err = binary.Read(*rdr, binary.LittleEndian, &inode)
// return &inodeHeader, inode, err
// case basicFile:
// var inode BasicFile
// err = binary.Read(*rdr, binary.LittleEndian, &inode)
// return &inodeHeader, inode, err
// case basicFile:
// var inode BasicFile
// err = binary.Read(*rdr, binary.LittleEndian, &inode)
// return &inodeHeader, inode, err
// case basicFile:
// var inode BasicFile
// err = binary.Read(*rdr, binary.LittleEndian, &inode)
// return &inodeHeader, inode, err
// case basicFile:
// var inode BasicFile
// err = binary.Read(*rdr, binary.LittleEndian, &inode)
// return &inodeHeader, inode, err
// case basicFile:
// var inode BasicFile
// err = binary.Read(*rdr, binary.LittleEndian, &inode)
// return &inodeHeader, inode, err
// case basicFile:
// var inode BasicFile
// err = binary.Read(*rdr, binary.LittleEndian, &inode)
// return &inodeHeader, inode, err
// case basicFile:
// var inode BasicFile
// err = binary.Read(*rdr, binary.LittleEndian, &inode)
// return &inodeHeader, inode, err
// case basicFile:
// var inode BasicFile
// err = binary.Read(*rdr, binary.LittleEndian, &inode)
// return &inodeHeader, inode, err
// case basicFile:
// var inode BasicFile
// err = binary.Read(*rdr, binary.LittleEndian, &inode)
// return &inodeHeader, inode, err
case BasicBlockDeviceType:
var inode BasicDevice
err = binary.Read(*rdr, binary.LittleEndian, &inode)
return &inodeHeader, inode, err
case BasicCharDeviceType:
var inode BasicDevice
err = binary.Read(*rdr, binary.LittleEndian, &inode)
return &inodeHeader, inode, err
case BasicFifoType:
var inode BasicIPC
err = binary.Read(*rdr, binary.LittleEndian, &inode)
return &inodeHeader, inode, err
case BasicSocketType:
var inode BasicIPC
err = binary.Read(*rdr, binary.LittleEndian, &inode)
return &inodeHeader, inode, err
case ExtendedDirectoryType:
inode, err := NewExtendedDirectory(rdr)
return &inodeHeader, inode, err
case ExtendedFileType:
inode, err := NewExtendedFile(rdr, blockSize)
return &inodeHeader, inode, err
case ExtendedSymlinkType:
inode, err := NewExtendedSymlink(rdr)
return &inodeHeader, inode, err
case ExtendedBlockDeviceType:
var inode ExtendedDevice
err = binary.Read(*rdr, binary.LittleEndian, &inode)
return &inodeHeader, inode, err
case ExtendedCharDeviceType:
var inode ExtendedDevice
err = binary.Read(*rdr, binary.LittleEndian, &inode)
return &inodeHeader, inode, err
case ExtendedFifoType:
var inode ExtendedIPC
err = binary.Read(*rdr, binary.LittleEndian, &inode)
return &inodeHeader, inode, err
case ExtendedSocketType:
var inode ExtendedIPC
err = binary.Read(*rdr, binary.LittleEndian, &inode)
return &inodeHeader, inode, err
//TODO: implement ALL cases
default:
return nil, nil, errors.New("Inode type is unrecognized: " + strconv.FormatInt(int64(inodeHeader.InodeType), 2))