| package fsutil |
| |
| import ( |
| "bytes" |
| "syscall" |
| |
| "github.com/containerd/continuity/sysx" |
| "github.com/pkg/errors" |
| ) |
| |
| // compareSysStat returns whether the stats are equivalent, |
| // whether the files are considered the same file, and |
| // an error |
| func compareSysStat(s1, s2 interface{}) (bool, error) { |
| ls1, ok := s1.(*syscall.Stat_t) |
| if !ok { |
| return false, nil |
| } |
| ls2, ok := s2.(*syscall.Stat_t) |
| if !ok { |
| return false, nil |
| } |
| |
| return ls1.Mode == ls2.Mode && ls1.Uid == ls2.Uid && ls1.Gid == ls2.Gid && ls1.Rdev == ls2.Rdev, nil |
| } |
| |
| func compareCapabilities(p1, p2 string) (bool, error) { |
| c1, err := sysx.LGetxattr(p1, "security.capability") |
| if err != nil && err != syscall.ENODATA { |
| return false, errors.Wrapf(err, "failed to get xattr for %s", p1) |
| } |
| c2, err := sysx.LGetxattr(p2, "security.capability") |
| if err != nil && err != syscall.ENODATA { |
| return false, errors.Wrapf(err, "failed to get xattr for %s", p2) |
| } |
| return bytes.Equal(c1, c2), nil |
| } |