buildkit/executor/stubs.go

50 lines
814 B
Go

package executor
import (
"errors"
"os"
"path/filepath"
"syscall"
"github.com/containerd/continuity/fs"
)
func MountStubsCleaner(dir string, mounts []Mount) func() {
names := []string{"/etc/resolv.conf", "/etc/hosts"}
for _, m := range mounts {
names = append(names, m.Dest)
}
paths := make([]string, 0, len(names))
for _, p := range names {
p = filepath.Join("/", p)
if p == "/" {
continue
}
realPath, err := fs.RootPath(dir, p)
if err != nil {
continue
}
_, err = os.Lstat(realPath)
if errors.Is(err, os.ErrNotExist) || errors.Is(err, syscall.ENOTDIR) {
paths = append(paths, realPath)
}
}
return func() {
for _, p := range paths {
st, err := os.Lstat(p)
if err != nil {
continue
}
if st.Size() != 0 {
continue
}
os.Remove(p)
}
}
}