Merge pull request #8931 from vbatts/vbatts-mount_pid_mountinfo

pkg/mount: mountinfo from specified pid
Upstream-commit: 349f67632f47a399a6a97a4a4c684b64ba8c6940
Component: engine

components/engine/pkg/mount/mountinfo_linux.go

@@ -1,3 +1,5 @@
+// +build linux
+
 package mount
 
 import (
@@ -72,3 +74,14 @@ func parseInfoFile(r io.Reader) ([]*MountInfo, error) {
 	}
 	return out, nil
 }
+
+// PidMountInfo collects the mounts for a specific Pid
+func PidMountInfo(pid int) ([]*MountInfo, error) {
+	f, err := os.Open(fmt.Sprintf("/proc/%d/mountinfo", pid))
+	if err != nil {
+		return nil, err
+	}
+	defer f.Close()
+
+	return parseInfoFile(f)
+}