fb464b94d3
Trying to reduce duplicated effort in maintaining a mountinfo parser, this patch replaces the local implementation with the implementation in github.com/moby/sys, which is actively maintained and contains various optimizations. Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
50 lines
1.3 KiB
Go
50 lines
1.3 KiB
Go
// +build !windows
|
|
|
|
/*
|
|
Copyright The containerd Authors.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
package mount
|
|
|
|
import (
|
|
"path/filepath"
|
|
|
|
"github.com/moby/sys/mountinfo"
|
|
"github.com/pkg/errors"
|
|
)
|
|
|
|
// Lookup returns the mount info corresponds to the path.
|
|
func Lookup(dir string) (Info, error) {
|
|
dir = filepath.Clean(dir)
|
|
|
|
m, err := mountinfo.GetMounts(mountinfo.ParentsFilter(dir))
|
|
if err != nil {
|
|
return Info{}, errors.Wrapf(err, "failed to find the mount info for %q", dir)
|
|
}
|
|
if len(m) == 0 {
|
|
return Info{}, errors.Errorf("failed to find the mount info for %q", dir)
|
|
}
|
|
|
|
// find the longest matching mount point
|
|
var idx, maxlen int
|
|
for i := range m {
|
|
if len(m[i].Mountpoint) > maxlen {
|
|
maxlen = len(m[i].Mountpoint)
|
|
idx = i
|
|
}
|
|
}
|
|
return *m[idx], nil
|
|
}
|