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//go:build !windows
// +build !windows
package file
import (
"github.com/docker/docker/pkg/idtools"
copy "github.com/tonistiigi/fsutil/copy"
)
func mapUserToChowner(user *copy.User, idmap *idtools.IdentityMapping) (copy.Chowner, error) {
if user == nil {
return func(old *copy.User) (*copy.User, error) {
if old == nil {
if idmap == nil {
return nil, nil
}
old = ©.User{} // root
// non-nil old is already mapped
if idmap != nil {
identity, err := idmap.ToHost(idtools.Identity{
UID: old.UID,
GID: old.GID,
})
if err != nil {
return nil, err
}
return ©.User{UID: identity.UID, GID: identity.GID}, nil
}
}
return old, nil
}, nil
}
u := *user
if idmap != nil {
identity, err := idmap.ToHost(idtools.Identity{
UID: user.UID,
GID: user.GID,
})
if err != nil {
return nil, err
}
u.UID = identity.UID
u.GID = identity.GID
}
return func(*copy.User) (*copy.User, error) {
return &u, nil
}, nil
}
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