You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
604 lines
16 KiB
604 lines
16 KiB
package filesys
|
|
|
|
import (
|
|
"bytes"
|
|
"context"
|
|
"math"
|
|
"os"
|
|
"strings"
|
|
"syscall"
|
|
"time"
|
|
|
|
"github.com/seaweedfs/fuse"
|
|
"github.com/seaweedfs/fuse/fs"
|
|
|
|
"github.com/chrislusf/seaweedfs/weed/filer"
|
|
"github.com/chrislusf/seaweedfs/weed/filesys/meta_cache"
|
|
"github.com/chrislusf/seaweedfs/weed/glog"
|
|
"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
|
|
"github.com/chrislusf/seaweedfs/weed/util"
|
|
)
|
|
|
|
type Dir struct {
|
|
name string
|
|
wfs *WFS
|
|
entry *filer_pb.Entry
|
|
parent *Dir
|
|
id uint64
|
|
}
|
|
|
|
var _ = fs.Node(&Dir{})
|
|
|
|
//var _ = fs.NodeIdentifier(&Dir{})
|
|
var _ = fs.NodeCreater(&Dir{})
|
|
var _ = fs.NodeMknoder(&Dir{})
|
|
var _ = fs.NodeMkdirer(&Dir{})
|
|
var _ = fs.NodeFsyncer(&Dir{})
|
|
var _ = fs.NodeRequestLookuper(&Dir{})
|
|
var _ = fs.HandleReadDirAller(&Dir{})
|
|
var _ = fs.NodeRemover(&Dir{})
|
|
var _ = fs.NodeRenamer(&Dir{})
|
|
var _ = fs.NodeSetattrer(&Dir{})
|
|
var _ = fs.NodeGetxattrer(&Dir{})
|
|
var _ = fs.NodeSetxattrer(&Dir{})
|
|
var _ = fs.NodeRemovexattrer(&Dir{})
|
|
var _ = fs.NodeListxattrer(&Dir{})
|
|
var _ = fs.NodeForgetter(&Dir{})
|
|
|
|
func (dir *Dir) xId() uint64 {
|
|
return dir.id
|
|
}
|
|
|
|
func (dir *Dir) Attr(ctx context.Context, attr *fuse.Attr) error {
|
|
|
|
// https://github.com/bazil/fuse/issues/196
|
|
attr.Valid = time.Second
|
|
|
|
if dir.FullPath() == dir.wfs.option.FilerMountRootPath {
|
|
dir.setRootDirAttributes(attr)
|
|
glog.V(3).Infof("root dir Attr %s, attr: %+v", dir.FullPath(), attr)
|
|
return nil
|
|
}
|
|
|
|
entry, err := dir.maybeLoadEntry()
|
|
if err != nil {
|
|
glog.V(3).Infof("dir Attr %s,err: %+v", dir.FullPath(), err)
|
|
return err
|
|
}
|
|
|
|
// attr.Inode = dir.Id()
|
|
attr.Mode = os.FileMode(entry.Attributes.FileMode) | os.ModeDir
|
|
attr.Mtime = time.Unix(entry.Attributes.Mtime, 0)
|
|
attr.Crtime = time.Unix(entry.Attributes.Crtime, 0)
|
|
attr.Gid = entry.Attributes.Gid
|
|
attr.Uid = entry.Attributes.Uid
|
|
|
|
glog.V(4).Infof("dir Attr %s, attr: %+v", dir.FullPath(), attr)
|
|
|
|
return nil
|
|
}
|
|
|
|
func (dir *Dir) Getxattr(ctx context.Context, req *fuse.GetxattrRequest, resp *fuse.GetxattrResponse) error {
|
|
|
|
glog.V(4).Infof("dir Getxattr %s", dir.FullPath())
|
|
|
|
entry, err := dir.maybeLoadEntry()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
return getxattr(entry, req, resp)
|
|
}
|
|
|
|
func (dir *Dir) setRootDirAttributes(attr *fuse.Attr) {
|
|
// attr.Inode = 1 // filer2.FullPath(dir.Path).AsInode()
|
|
attr.Valid = time.Second
|
|
attr.Inode = 1 // dir.Id()
|
|
attr.Uid = dir.wfs.option.MountUid
|
|
attr.Gid = dir.wfs.option.MountGid
|
|
attr.Mode = dir.wfs.option.MountMode
|
|
attr.Crtime = dir.wfs.option.MountCtime
|
|
attr.Ctime = dir.wfs.option.MountCtime
|
|
attr.Mtime = dir.wfs.option.MountMtime
|
|
attr.Atime = dir.wfs.option.MountMtime
|
|
attr.BlockSize = blockSize
|
|
}
|
|
|
|
func (dir *Dir) Fsync(ctx context.Context, req *fuse.FsyncRequest) error {
|
|
// fsync works at OS level
|
|
// write the file chunks to the filerGrpcAddress
|
|
glog.V(3).Infof("dir %s fsync %+v", dir.FullPath(), req)
|
|
|
|
return nil
|
|
}
|
|
|
|
func (dir *Dir) newFile(name string) fs.Node {
|
|
|
|
fileFullPath := util.NewFullPath(dir.FullPath(), name)
|
|
fileId := fileFullPath.AsInode()
|
|
dir.wfs.handlesLock.Lock()
|
|
existingHandle, found := dir.wfs.handles[fileId]
|
|
dir.wfs.handlesLock.Unlock()
|
|
|
|
if found {
|
|
glog.V(4).Infof("newFile found opened file handle: %+v", fileFullPath)
|
|
return existingHandle.f
|
|
}
|
|
return &File{
|
|
Name: name,
|
|
dir: dir,
|
|
wfs: dir.wfs,
|
|
id: fileId,
|
|
}
|
|
}
|
|
|
|
func (dir *Dir) newDirectory(fullpath util.FullPath) fs.Node {
|
|
|
|
return &Dir{name: fullpath.Name(), wfs: dir.wfs, parent: dir, id: fullpath.AsInode()}
|
|
|
|
}
|
|
|
|
func (dir *Dir) Create(ctx context.Context, req *fuse.CreateRequest,
|
|
resp *fuse.CreateResponse) (fs.Node, fs.Handle, error) {
|
|
|
|
exclusive := req.Flags&fuse.OpenExclusive != 0
|
|
isDirectory := req.Mode&os.ModeDir > 0
|
|
|
|
if exclusive || isDirectory {
|
|
_, err := dir.doCreateEntry(req.Name, req.Mode, req.Uid, req.Gid, exclusive)
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
}
|
|
var node fs.Node
|
|
if isDirectory {
|
|
node = dir.newDirectory(util.NewFullPath(dir.FullPath(), req.Name))
|
|
return node, nil, nil
|
|
}
|
|
|
|
node = dir.newFile(req.Name)
|
|
file := node.(*File)
|
|
file.entry = &filer_pb.Entry{
|
|
Name: req.Name,
|
|
IsDirectory: req.Mode&os.ModeDir > 0,
|
|
Attributes: &filer_pb.FuseAttributes{
|
|
Mtime: time.Now().Unix(),
|
|
Crtime: time.Now().Unix(),
|
|
FileMode: uint32(req.Mode &^ dir.wfs.option.Umask),
|
|
Uid: req.Uid,
|
|
Gid: req.Gid,
|
|
Collection: dir.wfs.option.Collection,
|
|
Replication: dir.wfs.option.Replication,
|
|
TtlSec: dir.wfs.option.TtlSec,
|
|
},
|
|
}
|
|
file.dirtyMetadata = true
|
|
fh := dir.wfs.AcquireHandle(file, req.Uid, req.Gid)
|
|
return file, fh, nil
|
|
|
|
}
|
|
|
|
func (dir *Dir) Mknod(ctx context.Context, req *fuse.MknodRequest) (fs.Node, error) {
|
|
|
|
_, err := dir.doCreateEntry(req.Name, req.Mode, req.Uid, req.Gid, false)
|
|
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
var node fs.Node
|
|
node = dir.newFile(req.Name)
|
|
return node, nil
|
|
}
|
|
|
|
func (dir *Dir) doCreateEntry(name string, mode os.FileMode, uid, gid uint32, exclusive bool) (*filer_pb.CreateEntryRequest, error) {
|
|
dirFullPath := dir.FullPath()
|
|
request := &filer_pb.CreateEntryRequest{
|
|
Directory: dirFullPath,
|
|
Entry: &filer_pb.Entry{
|
|
Name: name,
|
|
IsDirectory: mode&os.ModeDir > 0,
|
|
Attributes: &filer_pb.FuseAttributes{
|
|
Mtime: time.Now().Unix(),
|
|
Crtime: time.Now().Unix(),
|
|
FileMode: uint32(mode &^ dir.wfs.option.Umask),
|
|
Uid: uid,
|
|
Gid: gid,
|
|
Collection: dir.wfs.option.Collection,
|
|
Replication: dir.wfs.option.Replication,
|
|
TtlSec: dir.wfs.option.TtlSec,
|
|
},
|
|
},
|
|
OExcl: exclusive,
|
|
Signatures: []int32{dir.wfs.signature},
|
|
}
|
|
glog.V(1).Infof("create %s/%s", dirFullPath, name)
|
|
|
|
err := dir.wfs.WithFilerClient(func(client filer_pb.SeaweedFilerClient) error {
|
|
|
|
dir.wfs.mapPbIdFromLocalToFiler(request.Entry)
|
|
defer dir.wfs.mapPbIdFromFilerToLocal(request.Entry)
|
|
|
|
if err := filer_pb.CreateEntry(client, request); err != nil {
|
|
if strings.Contains(err.Error(), "EEXIST") {
|
|
return fuse.EEXIST
|
|
}
|
|
glog.V(0).Infof("create %s/%s: %v", dirFullPath, name, err)
|
|
return fuse.EIO
|
|
}
|
|
|
|
if err := dir.wfs.metaCache.InsertEntry(context.Background(), filer.FromPbEntry(request.Directory, request.Entry)); err != nil {
|
|
glog.Errorf("local InsertEntry dir %s/%s: %v", dirFullPath, name, err)
|
|
return fuse.EIO
|
|
}
|
|
|
|
return nil
|
|
})
|
|
return request, err
|
|
}
|
|
|
|
func (dir *Dir) Mkdir(ctx context.Context, req *fuse.MkdirRequest) (fs.Node, error) {
|
|
|
|
glog.V(4).Infof("mkdir %s: %s", dir.FullPath(), req.Name)
|
|
|
|
newEntry := &filer_pb.Entry{
|
|
Name: req.Name,
|
|
IsDirectory: true,
|
|
Attributes: &filer_pb.FuseAttributes{
|
|
Mtime: time.Now().Unix(),
|
|
Crtime: time.Now().Unix(),
|
|
FileMode: uint32(req.Mode &^ dir.wfs.option.Umask),
|
|
Uid: req.Uid,
|
|
Gid: req.Gid,
|
|
},
|
|
}
|
|
|
|
dirFullPath := dir.FullPath()
|
|
|
|
err := dir.wfs.WithFilerClient(func(client filer_pb.SeaweedFilerClient) error {
|
|
|
|
dir.wfs.mapPbIdFromLocalToFiler(newEntry)
|
|
defer dir.wfs.mapPbIdFromFilerToLocal(newEntry)
|
|
|
|
request := &filer_pb.CreateEntryRequest{
|
|
Directory: dirFullPath,
|
|
Entry: newEntry,
|
|
Signatures: []int32{dir.wfs.signature},
|
|
}
|
|
|
|
glog.V(1).Infof("mkdir: %v", request)
|
|
if err := filer_pb.CreateEntry(client, request); err != nil {
|
|
glog.V(0).Infof("mkdir %s/%s: %v", dirFullPath, req.Name, err)
|
|
return err
|
|
}
|
|
|
|
if err := dir.wfs.metaCache.InsertEntry(context.Background(), filer.FromPbEntry(request.Directory, request.Entry)); err != nil {
|
|
glog.Errorf("local mkdir dir %s/%s: %v", dirFullPath, req.Name, err)
|
|
return fuse.EIO
|
|
}
|
|
|
|
return nil
|
|
})
|
|
|
|
if err == nil {
|
|
node := dir.newDirectory(util.NewFullPath(dirFullPath, req.Name))
|
|
|
|
return node, nil
|
|
}
|
|
|
|
glog.V(0).Infof("mkdir %s/%s: %v", dirFullPath, req.Name, err)
|
|
|
|
return nil, fuse.EIO
|
|
}
|
|
|
|
func (dir *Dir) Lookup(ctx context.Context, req *fuse.LookupRequest, resp *fuse.LookupResponse) (node fs.Node, err error) {
|
|
|
|
dirPath := util.FullPath(dir.FullPath())
|
|
glog.V(4).Infof("dir Lookup %s: %s by %s", dirPath, req.Name, req.Header.String())
|
|
|
|
fullFilePath := dirPath.Child(req.Name)
|
|
visitErr := meta_cache.EnsureVisited(dir.wfs.metaCache, dir.wfs, dirPath)
|
|
if visitErr != nil {
|
|
glog.Errorf("dir Lookup %s: %v", dirPath, visitErr)
|
|
return nil, fuse.EIO
|
|
}
|
|
localEntry, cacheErr := dir.wfs.metaCache.FindEntry(context.Background(), fullFilePath)
|
|
if cacheErr == filer_pb.ErrNotFound {
|
|
return nil, fuse.ENOENT
|
|
}
|
|
|
|
if localEntry == nil {
|
|
// glog.V(3).Infof("dir Lookup cache miss %s", fullFilePath)
|
|
entry, err := filer_pb.GetEntry(dir.wfs, fullFilePath)
|
|
if err != nil {
|
|
glog.V(1).Infof("dir GetEntry %s: %v", fullFilePath, err)
|
|
return nil, fuse.ENOENT
|
|
}
|
|
localEntry = filer.FromPbEntry(string(dirPath), entry)
|
|
} else {
|
|
glog.V(4).Infof("dir Lookup cache hit %s", fullFilePath)
|
|
}
|
|
|
|
if localEntry != nil {
|
|
if localEntry.IsDirectory() {
|
|
node = dir.newDirectory(fullFilePath)
|
|
} else {
|
|
node = dir.newFile(req.Name)
|
|
}
|
|
|
|
// resp.EntryValid = time.Second
|
|
resp.Attr.Inode = fullFilePath.AsInode()
|
|
resp.Attr.Valid = time.Second
|
|
resp.Attr.Mtime = localEntry.Attr.Mtime
|
|
resp.Attr.Crtime = localEntry.Attr.Crtime
|
|
resp.Attr.Mode = localEntry.Attr.Mode
|
|
resp.Attr.Gid = localEntry.Attr.Gid
|
|
resp.Attr.Uid = localEntry.Attr.Uid
|
|
if localEntry.HardLinkCounter > 0 {
|
|
resp.Attr.Nlink = uint32(localEntry.HardLinkCounter)
|
|
}
|
|
|
|
return node, nil
|
|
}
|
|
|
|
glog.V(4).Infof("not found dir GetEntry %s: %v", fullFilePath, err)
|
|
return nil, fuse.ENOENT
|
|
}
|
|
|
|
func (dir *Dir) ReadDirAll(ctx context.Context) (ret []fuse.Dirent, err error) {
|
|
|
|
dirPath := util.FullPath(dir.FullPath())
|
|
glog.V(4).Infof("dir ReadDirAll %s", dirPath)
|
|
|
|
processEachEntryFn := func(entry *filer.Entry, isLast bool) {
|
|
if entry.IsDirectory() {
|
|
dirent := fuse.Dirent{Name: entry.Name(), Type: fuse.DT_Dir, Inode: dirPath.Child(entry.Name()).AsInode()}
|
|
ret = append(ret, dirent)
|
|
} else {
|
|
dirent := fuse.Dirent{Name: entry.Name(), Type: findFileType(uint16(entry.Attr.Mode)), Inode: dirPath.Child(entry.Name()).AsInode()}
|
|
ret = append(ret, dirent)
|
|
}
|
|
}
|
|
|
|
if err = meta_cache.EnsureVisited(dir.wfs.metaCache, dir.wfs, dirPath); err != nil {
|
|
glog.Errorf("dir ReadDirAll %s: %v", dirPath, err)
|
|
return nil, fuse.EIO
|
|
}
|
|
listErr := dir.wfs.metaCache.ListDirectoryEntries(context.Background(), dirPath, "", false, int64(math.MaxInt32), func(entry *filer.Entry) bool {
|
|
processEachEntryFn(entry, false)
|
|
return true
|
|
})
|
|
if listErr != nil {
|
|
glog.Errorf("list meta cache: %v", listErr)
|
|
return nil, fuse.EIO
|
|
}
|
|
return
|
|
}
|
|
|
|
func findFileType(mode uint16) fuse.DirentType {
|
|
switch mode & (syscall.S_IFMT & 0xffff) {
|
|
case syscall.S_IFSOCK:
|
|
return fuse.DT_Socket
|
|
case syscall.S_IFLNK:
|
|
return fuse.DT_Link
|
|
case syscall.S_IFREG:
|
|
return fuse.DT_File
|
|
case syscall.S_IFBLK:
|
|
return fuse.DT_Block
|
|
case syscall.S_IFDIR:
|
|
return fuse.DT_Dir
|
|
case syscall.S_IFCHR:
|
|
return fuse.DT_Char
|
|
case syscall.S_IFIFO:
|
|
return fuse.DT_FIFO
|
|
}
|
|
return fuse.DT_File
|
|
}
|
|
|
|
func (dir *Dir) Remove(ctx context.Context, req *fuse.RemoveRequest) error {
|
|
|
|
if !req.Dir {
|
|
return dir.removeOneFile(req)
|
|
}
|
|
|
|
return dir.removeFolder(req)
|
|
|
|
}
|
|
|
|
func (dir *Dir) removeOneFile(req *fuse.RemoveRequest) error {
|
|
|
|
dirFullPath := dir.FullPath()
|
|
filePath := util.NewFullPath(dirFullPath, req.Name)
|
|
entry, err := filer_pb.GetEntry(dir.wfs, filePath)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
// first, ensure the filer store can correctly delete
|
|
glog.V(3).Infof("remove file: %v", req)
|
|
isDeleteData := entry != nil && entry.HardLinkCounter <= 1
|
|
err = filer_pb.Remove(dir.wfs, dirFullPath, req.Name, isDeleteData, false, false, false, []int32{dir.wfs.signature})
|
|
if err != nil {
|
|
glog.V(3).Infof("not found remove file %s: %v", filePath, err)
|
|
return fuse.ENOENT
|
|
}
|
|
|
|
// then, delete meta cache and fsNode cache
|
|
if err = dir.wfs.metaCache.DeleteEntry(context.Background(), filePath); err != nil {
|
|
glog.V(3).Infof("local DeleteEntry %s: %v", filePath, err)
|
|
return fuse.ESTALE
|
|
}
|
|
|
|
// remove current file handle if any
|
|
dir.wfs.handlesLock.Lock()
|
|
defer dir.wfs.handlesLock.Unlock()
|
|
inodeId := filePath.AsInode()
|
|
delete(dir.wfs.handles, inodeId)
|
|
|
|
return nil
|
|
|
|
}
|
|
|
|
func (dir *Dir) removeFolder(req *fuse.RemoveRequest) error {
|
|
|
|
dirFullPath := dir.FullPath()
|
|
glog.V(3).Infof("remove directory entry: %v", req)
|
|
ignoreRecursiveErr := true // ignore recursion error since the OS should manage it
|
|
err := filer_pb.Remove(dir.wfs, dirFullPath, req.Name, true, true, ignoreRecursiveErr, false, []int32{dir.wfs.signature})
|
|
if err != nil {
|
|
glog.V(0).Infof("remove %s/%s: %v", dirFullPath, req.Name, err)
|
|
if strings.Contains(err.Error(), "non-empty") {
|
|
return fuse.EEXIST
|
|
}
|
|
return fuse.ENOENT
|
|
}
|
|
|
|
t := util.NewFullPath(dirFullPath, req.Name)
|
|
dir.wfs.metaCache.DeleteEntry(context.Background(), t)
|
|
|
|
return nil
|
|
|
|
}
|
|
|
|
func (dir *Dir) Setattr(ctx context.Context, req *fuse.SetattrRequest, resp *fuse.SetattrResponse) error {
|
|
|
|
glog.V(4).Infof("%v dir setattr %+v", dir.FullPath(), req)
|
|
|
|
entry, err := dir.maybeLoadEntry()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if req.Valid.Mode() {
|
|
entry.Attributes.FileMode = uint32(req.Mode)
|
|
}
|
|
|
|
if req.Valid.Uid() {
|
|
entry.Attributes.Uid = req.Uid
|
|
}
|
|
|
|
if req.Valid.Gid() {
|
|
entry.Attributes.Gid = req.Gid
|
|
}
|
|
|
|
if req.Valid.Mtime() {
|
|
entry.Attributes.Mtime = req.Mtime.Unix()
|
|
}
|
|
|
|
return dir.saveEntry(entry)
|
|
|
|
}
|
|
|
|
func (dir *Dir) Setxattr(ctx context.Context, req *fuse.SetxattrRequest) error {
|
|
|
|
glog.V(4).Infof("dir Setxattr %s: %s", dir.FullPath(), req.Name)
|
|
|
|
entry, err := dir.maybeLoadEntry()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if err := setxattr(entry, req); err != nil {
|
|
return err
|
|
}
|
|
|
|
return dir.saveEntry(entry)
|
|
|
|
}
|
|
|
|
func (dir *Dir) Removexattr(ctx context.Context, req *fuse.RemovexattrRequest) error {
|
|
|
|
glog.V(4).Infof("dir Removexattr %s: %s", dir.FullPath(), req.Name)
|
|
|
|
entry, err := dir.maybeLoadEntry()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if err := removexattr(entry, req); err != nil {
|
|
return err
|
|
}
|
|
|
|
return dir.saveEntry(entry)
|
|
|
|
}
|
|
|
|
func (dir *Dir) Listxattr(ctx context.Context, req *fuse.ListxattrRequest, resp *fuse.ListxattrResponse) error {
|
|
|
|
glog.V(4).Infof("dir Listxattr %s", dir.FullPath())
|
|
|
|
entry, err := dir.maybeLoadEntry()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if err := listxattr(entry, req, resp); err != nil {
|
|
return err
|
|
}
|
|
|
|
return nil
|
|
|
|
}
|
|
|
|
func (dir *Dir) Forget() {
|
|
glog.V(4).Infof("Forget dir %s", dir.FullPath())
|
|
}
|
|
|
|
func (dir *Dir) maybeLoadEntry() (*filer_pb.Entry, error) {
|
|
parentDirPath, name := util.FullPath(dir.FullPath()).DirAndName()
|
|
return dir.wfs.maybeLoadEntry(parentDirPath, name)
|
|
}
|
|
|
|
func (dir *Dir) saveEntry(entry *filer_pb.Entry) error {
|
|
|
|
parentDir, name := util.FullPath(dir.FullPath()).DirAndName()
|
|
|
|
return dir.wfs.WithFilerClient(func(client filer_pb.SeaweedFilerClient) error {
|
|
|
|
dir.wfs.mapPbIdFromLocalToFiler(entry)
|
|
defer dir.wfs.mapPbIdFromFilerToLocal(entry)
|
|
|
|
request := &filer_pb.UpdateEntryRequest{
|
|
Directory: parentDir,
|
|
Entry: entry,
|
|
Signatures: []int32{dir.wfs.signature},
|
|
}
|
|
|
|
glog.V(1).Infof("save dir entry: %v", request)
|
|
_, err := client.UpdateEntry(context.Background(), request)
|
|
if err != nil {
|
|
glog.Errorf("UpdateEntry dir %s/%s: %v", parentDir, name, err)
|
|
return fuse.EIO
|
|
}
|
|
|
|
if err := dir.wfs.metaCache.UpdateEntry(context.Background(), filer.FromPbEntry(request.Directory, request.Entry)); err != nil {
|
|
glog.Errorf("UpdateEntry dir %s/%s: %v", parentDir, name, err)
|
|
return fuse.ESTALE
|
|
}
|
|
|
|
return nil
|
|
})
|
|
}
|
|
|
|
func (dir *Dir) FullPath() string {
|
|
var parts []string
|
|
for p := dir; p != nil; p = p.parent {
|
|
if strings.HasPrefix(p.name, "/") {
|
|
if len(p.name) > 1 {
|
|
parts = append(parts, p.name[1:])
|
|
}
|
|
} else {
|
|
parts = append(parts, p.name)
|
|
}
|
|
}
|
|
|
|
if len(parts) == 0 {
|
|
return "/"
|
|
}
|
|
|
|
var buf bytes.Buffer
|
|
for i := len(parts) - 1; i >= 0; i-- {
|
|
buf.WriteString("/")
|
|
buf.WriteString(parts[i])
|
|
}
|
|
return buf.String()
|
|
}
|