Cross platform get_info

Signed-off-by: junxiang Mu <1948535941@qq.com>

ecstore/src/disk/error.rs

@@ -401,3 +401,20 @@ pub fn convert_access_error(e: io::Error, per_err: DiskError) -> Error {
 
     Error::new(e)
 }
+
+pub fn is_all_not_found(errs: &[Option<Error>]) -> bool {
+    for err in errs.iter() {
+        if let Some(err) = err {
+            if let Some(err) = err.downcast_ref::<DiskError>() {
+                match err {
+                    DiskError::FileNotFound | DiskError::VolumeNotFound | &DiskError::FileVersionNotFound =>{
+                        continue;
+                    },
+                    _ => return false,
+                }
+            }
+        }
+    }
+
+    !errs.is_empty()
+}