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// +build !windows
package fsutil
import (
"os"
"syscall"
"github.com/containerd/continuity/sysx"
"github.com/pkg/errors"
"github.com/tonistiigi/fsutil/types"
)
func loadXattr(origpath string, stat *types.Stat) error {
xattrs, err := sysx.LListxattr(origpath)
if err != nil {
if errors.Cause(err) == syscall.ENOTSUP {
return nil
}
return errors.Wrapf(err, "failed to xattr %s", origpath)
}
if len(xattrs) > 0 {
m := make(map[string][]byte)
for _, key := range xattrs {
v, err := sysx.LGetxattr(origpath, key)
if err == nil {
m[key] = v
}
}
stat.Xattrs = m
}
return nil
}
func setUnixOpt(fi os.FileInfo, stat *types.Stat, path string, seenFiles map[uint64]string) {
s := fi.Sys().(*syscall.Stat_t)
stat.Uid = s.Uid
stat.Gid = s.Gid
if !fi.IsDir() {
if s.Mode&syscall.S_IFBLK != 0 ||
s.Mode&syscall.S_IFCHR != 0 {
stat.Devmajor = int64(major(uint64(s.Rdev)))
stat.Devminor = int64(minor(uint64(s.Rdev)))
}
ino := s.Ino
linked := false
if seenFiles != nil {
if s.Nlink > 1 {
if oldpath, ok := seenFiles[ino]; ok {
stat.Linkname = oldpath
stat.Size_ = 0
linked = true
}
}
if !linked {
seenFiles[ino] = path
}
}
}
}
func major(device uint64) uint64 {
return (device >> 8) & 0xfff
}
func minor(device uint64) uint64 {
return (device & 0xff) | ((device >> 12) & 0xfff00)
}
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