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fs: Move traceError() to lower functions where possible. (#3633)

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This commit is contained in:
Krishna Srinivas 2017-01-26 15:40:10 -08:00 committed by Harshavardhana
parent 17dd1c19df
commit 152cdf1c05
4 changed files with 100 additions and 98 deletions
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128
cmd/fs-v1-helpers.go
View File

@ -27,20 +27,20 @@ import (
// windows automatically.
func fsRemoveFile(filePath string) (err error) {
if filePath == "" {
return errInvalidArgument
return traceError(errInvalidArgument)
}
if err = checkPathLength(filePath); err != nil {
return err
return traceError(err)
}
if err = os.Remove(preparePath(filePath)); err != nil {
if os.IsNotExist(err) {
return errFileNotFound
return traceError(errFileNotFound)
} else if os.IsPermission(err) {
return errFileAccessDenied
return traceError(errFileAccessDenied)
}
return err
return traceError(err)
}
return nil
@ -50,43 +50,44 @@ func fsRemoveFile(filePath string) (err error) {
// long paths for windows automatically.
func fsRemoveAll(dirPath string) (err error) {
if dirPath == "" {
return errInvalidArgument
return traceError(errInvalidArgument)
}
if err = checkPathLength(dirPath); err != nil {
return err
return traceError(err)
}
if err = removeAll(dirPath); err != nil {
if os.IsPermission(err) {
return errVolumeAccessDenied
return traceError(errVolumeAccessDenied)
}
return traceError(err)
}
return err
return nil
}
// Removes a directory only if its empty, handles long
// paths for windows automatically.
func fsRemoveDir(dirPath string) (err error) {
if dirPath == "" {
return errInvalidArgument
return traceError(errInvalidArgument)
}
if err = checkPathLength(dirPath); err != nil {
return err
return traceError(err)
}
if err = os.Remove(preparePath(dirPath)); err != nil {
if os.IsNotExist(err) {
return errVolumeNotFound
return traceError(errVolumeNotFound)
} else if isSysErrNotEmpty(err) {
return errVolumeNotEmpty
return traceError(errVolumeNotEmpty)
}
return traceError(err)
}
return err
return nil
}
// Creates a new directory, parent dir should exist
@ -95,26 +96,27 @@ func fsRemoveDir(dirPath string) (err error) {
// are handled automatically.
func fsMkdir(dirPath string) (err error) {
if dirPath == "" {
return errInvalidArgument
return traceError(errInvalidArgument)
}
if err = checkPathLength(dirPath); err != nil {
return err
return traceError(err)
}
if err = os.Mkdir(preparePath(dirPath), 0777); err != nil {
if os.IsExist(err) {
return errVolumeExists
return traceError(errVolumeExists)
} else if os.IsPermission(err) {
return errDiskAccessDenied
return traceError(errDiskAccessDenied)
} else if isSysErrNotDir(err) {
// File path cannot be verified since
// one of the parents is a file.
return errDiskAccessDenied
return traceError(errDiskAccessDenied)
} else if isSysErrPathNotFound(err) {
// Add specific case for windows.
return errDiskAccessDenied
return traceError(errDiskAccessDenied)
}
return traceError(err)
}
return nil
@ -124,24 +126,24 @@ func fsMkdir(dirPath string) (err error) {
// attributes upon success.
func fsStatDir(statDir string) (os.FileInfo, error) {
if statDir == "" {
return nil, errInvalidArgument
return nil, traceError(errInvalidArgument)
}
if err := checkPathLength(statDir); err != nil {
return nil, err
return nil, traceError(err)
}
fi, err := os.Stat(preparePath(statDir))
if err != nil {
if os.IsNotExist(err) {
return nil, errVolumeNotFound
return nil, traceError(errVolumeNotFound)
} else if os.IsPermission(err) {
return nil, errVolumeAccessDenied
return nil, traceError(errVolumeAccessDenied)
}
return nil, err
return nil, traceError(err)
}
if !fi.IsDir() {
return nil, errVolumeAccessDenied
return nil, traceError(errVolumeAccessDenied)
}
return fi, nil
@ -150,28 +152,28 @@ func fsStatDir(statDir string) (os.FileInfo, error) {
// Lookup if file exists, returns file attributes upon success
func fsStatFile(statFile string) (os.FileInfo, error) {
if statFile == "" {
return nil, errInvalidArgument
return nil, traceError(errInvalidArgument)
}
if err := checkPathLength(statFile); err != nil {
return nil, err
return nil, traceError(err)
}
fi, err := os.Stat(preparePath(statFile))
if err != nil {
if os.IsNotExist(err) {
return nil, errFileNotFound
return nil, traceError(errFileNotFound)
} else if os.IsPermission(err) {
return nil, errFileAccessDenied
return nil, traceError(errFileAccessDenied)
} else if isSysErrNotDir(err) {
return nil, errFileAccessDenied
return nil, traceError(errFileAccessDenied)
} else if isSysErrPathNotFound(err) {
return nil, errFileNotFound
return nil, traceError(errFileNotFound)
}
return nil, err
return nil, traceError(err)
}
if fi.IsDir() {
return nil, errFileNotFound
return nil, traceError(errFileNotFound)
}
return fi, nil
}
@ -180,44 +182,44 @@ func fsStatFile(statFile string) (os.FileInfo, error) {
// a readable stream and the size of the readable stream.
func fsOpenFile(readPath string, offset int64) (io.ReadCloser, int64, error) {
if readPath == "" || offset < 0 {
return nil, 0, errInvalidArgument
return nil, 0, traceError(errInvalidArgument)
}
if err := checkPathLength(readPath); err != nil {
return nil, 0, err
return nil, 0, traceError(err)
}
fr, err := os.Open(preparePath(readPath))
if err != nil {
if os.IsNotExist(err) {
return nil, 0, errFileNotFound
return nil, 0, traceError(errFileNotFound)
} else if os.IsPermission(err) {
return nil, 0, errFileAccessDenied
return nil, 0, traceError(errFileAccessDenied)
} else if isSysErrNotDir(err) {
// File path cannot be verified since one of the parents is a file.
return nil, 0, errFileAccessDenied
return nil, 0, traceError(errFileAccessDenied)
} else if isSysErrPathNotFound(err) {
// Add specific case for windows.
return nil, 0, errFileNotFound
return nil, 0, traceError(errFileNotFound)
}
return nil, 0, err
return nil, 0, traceError(err)
}
// Stat to get the size of the file at path.
st, err := fr.Stat()
if err != nil {
return nil, 0, err
return nil, 0, traceError(err)
}
// Verify if its not a regular file, since subsequent Seek is undefined.
if !st.Mode().IsRegular() {
return nil, 0, errIsNotRegular
return nil, 0, traceError(errIsNotRegular)
}
// Seek to the requested offset.
if offset > 0 {
_, err = fr.Seek(offset, os.SEEK_SET)
if err != nil {
return nil, 0, err
return nil, 0, traceError(err)
}
}
@ -228,22 +230,22 @@ func fsOpenFile(readPath string, offset int64) (io.ReadCloser, int64, error) {
// Creates a file and copies data from incoming reader. Staging buffer is used by io.CopyBuffer.
func fsCreateFile(tempObjPath string, reader io.Reader, buf []byte, fallocSize int64) (int64, error) {
if tempObjPath == "" || reader == nil || buf == nil {
return 0, errInvalidArgument
return 0, traceError(errInvalidArgument)
}
if err := checkPathLength(tempObjPath); err != nil {
return 0, err
return 0, traceError(err)
}
if err := mkdirAll(pathutil.Dir(tempObjPath), 0777); err != nil {
return 0, err
return 0, traceError(err)
}
writer, err := os.OpenFile(preparePath(tempObjPath), os.O_CREATE|os.O_WRONLY, 0666)
if err != nil {
// File path cannot be verified since one of the parents is a file.
if isSysErrNotDir(err) {
return 0, errFileAccessDenied
return 0, traceError(errFileAccessDenied)
}
return 0, err
}
@ -252,13 +254,13 @@ func fsCreateFile(tempObjPath string, reader io.Reader, buf []byte, fallocSize i
// Fallocate only if the size is final object is known.
if fallocSize > 0 {
if err = fsFAllocate(int(writer.Fd()), 0, fallocSize); err != nil {
return 0, err
return 0, traceError(err)
}
}
bytesWritten, err := io.CopyBuffer(writer, reader, buf)
if err != nil {
return 0, err
return 0, traceError(err)
}
return bytesWritten, nil
@ -267,20 +269,20 @@ func fsCreateFile(tempObjPath string, reader io.Reader, buf []byte, fallocSize i
// Removes uploadID at destination path.
func fsRemoveUploadIDPath(basePath, uploadIDPath string) error {
if basePath == "" || uploadIDPath == "" {
return errInvalidArgument
return traceError(errInvalidArgument)
}
// List all the entries in uploadID.
entries, err := readDir(uploadIDPath)
if err != nil && err != errFileNotFound {
return err
return traceError(err)
}
// Delete all the entries obtained from previous readdir.
for _, entryPath := range entries {
err = fsDeleteFile(basePath, pathJoin(uploadIDPath, entryPath))
if err != nil && err != errFileNotFound {
return err
return traceError(err)
}
}
@ -325,11 +327,11 @@ func fsRenameFile(sourcePath, destPath string) error {
// this function additionally protects the basePath from being deleted.
func fsDeleteFile(basePath, deletePath string) error {
if err := checkPathLength(basePath); err != nil {
return err
return traceError(err)
}
if err := checkPathLength(deletePath); err != nil {
return err
return traceError(err)
}
if basePath == deletePath {
@ -340,11 +342,11 @@ func fsDeleteFile(basePath, deletePath string) error {
pathSt, err := os.Stat(preparePath(deletePath))
if err != nil {
if os.IsNotExist(err) {
return errFileNotFound
return traceError(errFileNotFound)
} else if os.IsPermission(err) {
return errFileAccessDenied
return traceError(errFileAccessDenied)
}
return err
return traceError(err)
}
if pathSt.IsDir() && !isDirEmpty(deletePath) {
@ -355,13 +357,13 @@ func fsDeleteFile(basePath, deletePath string) error {
// Attempt to remove path.
if err = os.Remove(preparePath(deletePath)); err != nil {
if os.IsNotExist(err) {
return errFileNotFound
return traceError(errFileNotFound)
} else if os.IsPermission(err) {
return errFileAccessDenied
return traceError(errFileAccessDenied)
} else if isSysErrNotEmpty(err) {
return errVolumeNotEmpty
return traceError(errVolumeNotEmpty)
}
return err
return traceError(err)
}
// Recursively go down the next path and delete again.

30
cmd/fs-v1-helpers_test.go
View File

@ -31,11 +31,11 @@ func TestFSStats(t *testing.T) {
// Setup test environment.
if err = fsMkdir(""); err != errInvalidArgument {
if err = fsMkdir(""); errorCause(err) != errInvalidArgument {
t.Fatal("Unexpected error", err)
}
if err = fsMkdir(pathJoin(path, "my-obj-del-0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001")); err != errFileNameTooLong {
if err = fsMkdir(pathJoin(path, "my-obj-del-0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001")); errorCause(err) != errFileNameTooLong {
t.Fatal("Unexpected error", err)
}
@ -51,7 +51,7 @@ func TestFSStats(t *testing.T) {
// Seek back.
reader.Seek(0, 0)
if err = fsMkdir(pathJoin(path, "success-vol", "success-file")); err != errVolumeExists {
if err = fsMkdir(pathJoin(path, "success-vol", "success-file")); errorCause(err) != errVolumeExists {
t.Fatal("Unexpected error", err)
}
@ -138,11 +138,11 @@ func TestFSStats(t *testing.T) {
for i, testCase := range testCases {
if testCase.srcPath != "" {
if _, err := fsStatFile(pathJoin(testCase.srcFSPath, testCase.srcVol, testCase.srcPath)); err != testCase.expectedErr {
if _, err := fsStatFile(pathJoin(testCase.srcFSPath, testCase.srcVol, testCase.srcPath)); errorCause(err) != testCase.expectedErr {
t.Fatalf("TestPosix case %d: Expected: \"%s\", got: \"%s\"", i+1, testCase.expectedErr, err)
}
} else {
if _, err := fsStatDir(pathJoin(testCase.srcFSPath, testCase.srcVol)); err != testCase.expectedErr {
if _, err := fsStatDir(pathJoin(testCase.srcFSPath, testCase.srcVol)); errorCause(err) != testCase.expectedErr {
t.Fatalf("TestPosix case %d: Expected: \"%s\", got: \"%s\"", i+1, testCase.expectedErr, err)
}
}
@ -161,11 +161,11 @@ func TestFSCreateAndOpen(t *testing.T) {
t.Fatalf("Unable to create directory, %s", err)
}
if _, err = fsCreateFile("", nil, nil, 0); err != errInvalidArgument {
if _, err = fsCreateFile("", nil, nil, 0); errorCause(err) != errInvalidArgument {
t.Fatal("Unexpected error", err)
}
if _, _, err = fsOpenFile("", -1); err != errInvalidArgument {
if _, _, err = fsOpenFile("", -1); errorCause(err) != errInvalidArgument {
t.Fatal("Unexpected error", err)
}
@ -200,17 +200,17 @@ func TestFSCreateAndOpen(t *testing.T) {
for i, testCase := range testCases {
_, err = fsCreateFile(pathJoin(path, testCase.srcVol, testCase.srcPath), reader, buf, reader.Size())
if err != testCase.expectedErr {
if errorCause(err) != testCase.expectedErr {
t.Errorf("Test case %d: Expected: \"%s\", got: \"%s\"", i+1, testCase.expectedErr, err)
}
_, _, err = fsOpenFile(pathJoin(path, testCase.srcVol, testCase.srcPath), 0)
if err != testCase.expectedErr {
if errorCause(err) != testCase.expectedErr {
t.Errorf("Test case %d: Expected: \"%s\", got: \"%s\"", i+1, testCase.expectedErr, err)
}
}
// Attempt to open a directory.
if _, _, err = fsOpenFile(pathJoin(path), 0); err != errIsNotRegular {
if _, _, err = fsOpenFile(pathJoin(path), 0); errorCause(err) != errIsNotRegular {
t.Fatal("Unexpected error", err)
}
}
@ -272,7 +272,7 @@ func TestFSDeletes(t *testing.T) {
}
for i, testCase := range testCases {
if err = fsDeleteFile(path, pathJoin(path, testCase.srcVol, testCase.srcPath)); err != testCase.expectedErr {
if err = fsDeleteFile(path, pathJoin(path, testCase.srcVol, testCase.srcPath)); errorCause(err) != testCase.expectedErr {
t.Errorf("Test case %d: Expected: \"%s\", got: \"%s\"", i+1, testCase.expectedErr, err)
}
}
@ -374,11 +374,11 @@ func TestFSRemoves(t *testing.T) {
for i, testCase := range testCases {
if testCase.srcPath != "" {
if err = fsRemoveFile(pathJoin(testCase.srcFSPath, testCase.srcVol, testCase.srcPath)); err != testCase.expectedErr {
if err = fsRemoveFile(pathJoin(testCase.srcFSPath, testCase.srcVol, testCase.srcPath)); errorCause(err) != testCase.expectedErr {
t.Errorf("Test case %d: Expected: \"%s\", got: \"%s\"", i+1, testCase.expectedErr, err)
}
} else {
if err = fsRemoveDir(pathJoin(testCase.srcFSPath, testCase.srcVol, testCase.srcPath)); err != testCase.expectedErr {
if err = fsRemoveDir(pathJoin(testCase.srcFSPath, testCase.srcVol, testCase.srcPath)); errorCause(err) != testCase.expectedErr {
t.Error(err)
}
}
@ -388,11 +388,11 @@ func TestFSRemoves(t *testing.T) {
t.Fatal(err)
}
if err = fsRemoveAll(""); err != errInvalidArgument {
if err = fsRemoveAll(""); errorCause(err) != errInvalidArgument {
t.Fatal(err)
}
if err = fsRemoveAll("my-obj-del-0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001"); err != errFileNameTooLong {
if err = fsRemoveAll("my-obj-del-0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001"); errorCause(err) != errFileNameTooLong {
t.Fatal(err)
}
}

8
cmd/fs-v1-multipart.go
View File

@ -633,7 +633,7 @@ func (fs fsObjects) listObjectParts(bucket, object, uploadID string, partNumberM
partNamePath := pathJoin(fs.fsPath, minioMetaMultipartBucket, uploadIDPath, part.Name)
fi, err = fsStatFile(partNamePath)
if err != nil {
return ListPartsInfo{}, toObjectErr(traceError(err), minioMetaMultipartBucket, partNamePath)
return ListPartsInfo{}, toObjectErr(err, minioMetaMultipartBucket, partNamePath)
}
result.Parts = append(result.Parts, partInfo{
PartNumber: part.Number,
@ -883,7 +883,7 @@ func (fs fsObjects) CompleteMultipartUpload(bucket string, object string, upload
multipartObjectDir := pathJoin(fs.fsPath, minioMetaMultipartBucket, bucket, object)
multipartUploadIDDir := pathJoin(multipartObjectDir, uploadID)
if err = fsRemoveUploadIDPath(multipartObjectDir, multipartUploadIDDir); err != nil {
return ObjectInfo{}, toObjectErr(traceError(err), bucket, object)
return ObjectInfo{}, toObjectErr(err, bucket, object)
}
// Remove entry from `uploads.json`.
@ -893,7 +893,7 @@ func (fs fsObjects) CompleteMultipartUpload(bucket string, object string, upload
fi, err := fsStatFile(fsNSObjPath)
if err != nil {
return ObjectInfo{}, toObjectErr(traceError(err), bucket, object)
return ObjectInfo{}, toObjectErr(err, bucket, object)
}
// Return object info.
@ -961,7 +961,7 @@ func (fs fsObjects) AbortMultipartUpload(bucket, object, uploadID string) error
multipartObjectDir := pathJoin(fs.fsPath, minioMetaMultipartBucket, bucket, object)
multipartUploadIDDir := pathJoin(multipartObjectDir, uploadID)
if err = fsRemoveUploadIDPath(multipartObjectDir, multipartUploadIDDir); err != nil {
return toObjectErr(traceError(err), bucket, object)
return toObjectErr(err, bucket, object)
}
// Remove entry from `uploads.json`.

32
cmd/fs-v1.go
View File

@ -245,7 +245,7 @@ func (fs fsObjects) statBucketDir(bucket string) (os.FileInfo, error) {
}
st, err := fsStatDir(bucketDir)
if err != nil {
return nil, traceError(err)
return nil, err
}
return st, nil
}
@ -259,7 +259,7 @@ func (fs fsObjects) MakeBucket(bucket string) error {
}
if err = fsMkdir(bucketDir); err != nil {
return toObjectErr(traceError(err), bucket)
return toObjectErr(err, bucket)
}
return nil
@ -283,7 +283,7 @@ func (fs fsObjects) GetBucketInfo(bucket string) (BucketInfo, error) {
// ListBuckets - list all s3 compatible buckets (directories) at fsPath.
func (fs fsObjects) ListBuckets() ([]BucketInfo, error) {
if err := checkPathLength(fs.fsPath); err != nil {
return nil, err
return nil, traceError(err)
}
var bucketInfos []BucketInfo
entries, err := readDir(preparePath(fs.fsPath))
@ -301,9 +301,9 @@ func (fs fsObjects) ListBuckets() ([]BucketInfo, error) {
fi, err = fsStatDir(pathJoin(fs.fsPath, entry))
if err != nil {
// If the directory does not exist, skip the entry.
if err == errVolumeNotFound {
if errorCause(err) == errVolumeNotFound {
continue
} else if err == errVolumeAccessDenied {
} else if errorCause(err) == errVolumeAccessDenied {
// Skip the entry if its a file.
continue
}
@ -376,7 +376,7 @@ func (fs fsObjects) CopyObject(srcBucket, srcObject, dstBucket, dstObject string
// Stat the file to get file size.
fi, err := fsStatFile(pathJoin(fs.fsPath, srcBucket, srcObject))
if err != nil {
return ObjectInfo{}, toObjectErr(traceError(err), srcBucket, srcObject)
return ObjectInfo{}, toObjectErr(err, srcBucket, srcObject)
}
// Check if this request is only metadata update.
@ -386,7 +386,7 @@ func (fs fsObjects) CopyObject(srcBucket, srcObject, dstBucket, dstObject string
var wlk *lock.LockedFile
wlk, err = fs.rwPool.Write(fsMetaPath)
if err != nil {
return ObjectInfo{}, toObjectErr(err, srcBucket, srcObject)
return ObjectInfo{}, toObjectErr(traceError(err), srcBucket, srcObject)
}
// This close will allow for locks to be synchronized on `fs.json`.
defer wlk.Close()
@ -467,7 +467,7 @@ func (fs fsObjects) GetObject(bucket, object string, offset int64, length int64,
fsObjPath := pathJoin(fs.fsPath, bucket, object)
reader, size, err := fsOpenFile(fsObjPath, offset)
if err != nil {
return toObjectErr(traceError(err), bucket, object)
return toObjectErr(err, bucket, object)
}
defer reader.Close()
@ -523,7 +523,7 @@ func (fs fsObjects) getObjectInfo(bucket, object string) (ObjectInfo, error) {
// Stat the file to get file size.
fi, err := fsStatFile(pathJoin(fs.fsPath, bucket, object))
if err != nil {
return ObjectInfo{}, toObjectErr(traceError(err), bucket, object)
return ObjectInfo{}, toObjectErr(err, bucket, object)
}
return fsMeta.ToObjectInfo(bucket, object, fi), nil
@ -574,7 +574,7 @@ func (fs fsObjects) PutObject(bucket string, object string, size int64, data io.
fsMetaPath := pathJoin(fs.fsPath, minioMetaBucket, bucketMetaPrefix, bucket, object, fsMetaJSONFile)
wlk, err = fs.rwPool.Create(fsMetaPath)
if err != nil {
return ObjectInfo{}, toObjectErr(err, bucket, object)
return ObjectInfo{}, toObjectErr(traceError(err), bucket, object)
}
// This close will allow for locks to be synchronized on `fs.json`.
defer wlk.Close()
@ -672,7 +672,7 @@ func (fs fsObjects) PutObject(bucket string, object string, size int64, data io.
// Stat the file to fetch timestamp, size.
fi, err := fsStatFile(pathJoin(fs.fsPath, bucket, object))
if err != nil {
return ObjectInfo{}, toObjectErr(traceError(err), bucket, object)
return ObjectInfo{}, toObjectErr(err, bucket, object)
}
// Success.
@ -699,20 +699,20 @@ func (fs fsObjects) DeleteObject(bucket, object string) error {
defer rwlk.Close()
}
if lerr != nil && lerr != errFileNotFound {
return toObjectErr(lerr, bucket, object)
return toObjectErr(traceError(lerr), bucket, object)
}
}
// Delete the object.
if err := fsDeleteFile(pathJoin(fs.fsPath, bucket), pathJoin(fs.fsPath, bucket, object)); err != nil {
return toObjectErr(traceError(err), bucket, object)
return toObjectErr(err, bucket, object)
}
if bucket != minioMetaBucket {
// Delete the metadata object.
err := fsDeleteFile(minioMetaBucketDir, fsMetaPath)
if err != nil && err != errFileNotFound {
return toObjectErr(traceError(err), bucket, object)
if err != nil && errorCause(err) != errFileNotFound {
return toObjectErr(err, bucket, object)
}
}
return nil
@ -790,7 +790,7 @@ func (fs fsObjects) ListObjects(bucket, prefix, marker, delimiter string, maxKey
var fi os.FileInfo
fi, err = fsStatFile(pathJoin(fs.fsPath, bucket, entry))
if err != nil {
return ObjectInfo{}, toObjectErr(traceError(err), bucket, entry)
return ObjectInfo{}, toObjectErr(err, bucket, entry)
}
fsMeta := fsMetaV1{}
return fsMeta.ToObjectInfo(bucket, entry, fi), nil