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xl: Reduce usage of isDirEmpty() (#11838) 

When an object is removed, its parent directory is inspected to check if
it is empty to remove if that is the case.

However, we can use os.Remove() directly since it is only able to remove
a file or an empty directory.
This commit is contained in:
Anis Elleuch 2021-03-19 23:42:01 +01:00 committed by GitHub
parent 4d86384dc7
commit 98ff91b484
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 13 additions and 25 deletions
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38
cmd/xl-storage.go
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@ -750,15 +750,6 @@ func (s *xlStorage) isLeaf(volume string, leafPath string) bool {
return false
}
func (s *xlStorage) isLeafDir(volume, leafPath string) bool {
volumeDir, err := s.getVolDir(volume)
if err != nil {
return false
}
return isDirEmpty(pathJoin(volumeDir, leafPath))
}
// ListDir - return all the entries at the given directory path.
// If an entry is a directory it will be returned with a trailing SlashSeparator.
func (s *xlStorage) ListDir(ctx context.Context, volume, dirPath string, count int) (entries []string, err error) {
@ -1973,10 +1964,8 @@ func (s *xlStorage) RenameData(ctx context.Context, srcVolume, srcPath, dataDir,
}
// Remove parent dir of the source file if empty
if parentDir := pathutil.Dir(srcFilePath); isDirEmpty(parentDir) {
s.deleteFile(srcVolumeDir, parentDir, false)
}
parentDir := pathutil.Dir(srcFilePath)
s.deleteFile(srcVolumeDir, parentDir, false)
return nil
}
@ -2028,18 +2017,18 @@ func (s *xlStorage) RenameFile(ctx context.Context, srcVolume, srcPath, dstVolum
// If source is a directory, we expect the destination to be non-existent but we
// we still need to allow overwriting an empty directory since it represents
// an object empty directory.
_, err = os.Lstat(dstFilePath)
dirInfo, err := os.Lstat(dstFilePath)
if isSysErrIO(err) {
return errFaultyDisk
}
if err == nil && !isDirEmpty(dstFilePath) {
return errFileAccessDenied
}
if err != nil && !osIsNotExist(err) {
return err
}
// Empty destination remove it before rename.
if isDirEmpty(dstFilePath) {
if err != nil {
if !osIsNotExist(err) {
return err
}
} else {
if !dirInfo.IsDir() {
return errFileAccessDenied
}
if err = os.Remove(dstFilePath); err != nil {
if isSysErrNotEmpty(err) {
return errFileAccessDenied
@ -2054,9 +2043,8 @@ func (s *xlStorage) RenameFile(ctx context.Context, srcVolume, srcPath, dstVolum
}
// Remove parent dir of the source file if empty
if parentDir := pathutil.Dir(srcFilePath); isDirEmpty(parentDir) {
s.deleteFile(srcVolumeDir, parentDir, false)
}
parentDir := pathutil.Dir(srcFilePath)
s.deleteFile(srcVolumeDir, parentDir, false)
return nil
}