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skip container ID remapping, if the file is overlayfs whiteout.

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Signed-off-by: Chanhun Jeong <chanhun.jeong@navercorp.com>
This commit is contained in:
Chanhun Jeong 2017-12-14 17:52:37 +09:00
parent 1cea9d3bdb
commit b013c1541d
1 changed files with 7 additions and 1 deletions
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8
pkg/archive/archive.go
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@ -456,10 +456,16 @@ func (ta *tarAppender) addTarFile(path, name string) error {
}
}
//check whether the file is overlayfs whiteout
//if yes, skip re-mapping container ID mappings.
isOverlayWhiteout := fi.Mode()&os.ModeCharDevice != 0 && hdr.Devmajor == 0 && hdr.Devminor == 0
//handle re-mapping container ID mappings back to host ID mappings before
//writing tar headers/files. We skip whiteout files because they were written
//by the kernel and already have proper ownership relative to the host
if !strings.HasPrefix(filepath.Base(hdr.Name), WhiteoutPrefix) && !ta.IDMappings.Empty() {
if !isOverlayWhiteout &&
!strings.HasPrefix(filepath.Base(hdr.Name), WhiteoutPrefix) &&
!ta.IDMappings.Empty() {
fileIDPair, err := getFileUIDGID(fi.Sys())
if err != nil {
return err