2 files changed, 18 insertions, 6 deletions
diff --git a/lockchain-files/src/fs/mod.rs b/lockchain-files/src/fs/mod.rs
index 7820925..9f2bfe2 100644
--- a/lockchain-files/src/fs/mod.rs
+++ b/lockchain-files/src/fs/mod.rs
@@ -9,21 +9,22 @@
 //! which will return either `Ok(())` or the first error in the list
 //! of operations.
 
-use lcc::traits::{Body, AutoEncoder};
+use lcc::traits::{AutoEncoder, Body};
 
 use std::collections::HashMap;
 use std::error::Error;
 use std::io::{self, Write};
 use std::{
-    fs::{self, File, OpenOptions as OO},
+    fs::{self, File, OpenOptions},
     path::PathBuf,
 };
 
 use utils::FileToString;
 use FileVault;
 
-pub mod primitive;
+mod primitive;
 use self::primitive::*;
+use userstore::DiskMirror;
 
 #[derive(Debug)]
 pub struct Filesystem {
@@ -87,8 +88,14 @@ impl Filesystem {
 
     pub fn sync_vault<T: Body>(&self, vault: &FileVault<T>) -> Result<(), io::Error> {
         vault.config.save(&self.root)?;
+        primitive::write_file(
+            FileType::Metadata,
+            &self.root,
+            "userstore",
+            vault.users.to_disk(),
+        )?;
 
-        unimplemented!()
+        Ok(())
     }
 
     /// Respond to a sync request
diff --git a/lockchain-files/src/fs/primitive.rs b/lockchain-files/src/fs/primitive.rs
index d567a28..f97cd49 100644
--- a/lockchain-files/src/fs/primitive.rs
+++ b/lockchain-files/src/fs/primitive.rs
@@ -47,7 +47,12 @@ fn type_path(tt: FileType, root: &PathBuf) -> PathBuf {
     path
 }
 
-pub(crate) fn write_file(tt: FileType, root: PathBuf, name: &str, contents: Vec<u8>) -> Result<()> {
+pub(crate) fn write_file(
+    tt: FileType,
+    root: &PathBuf,
+    name: &str,
+    contents: Vec<u8>,
+) -> Result<()> {
     let file_name = format!("{}.{}", name, file_ending!(&tt));
     let mut path = type_path(tt, &root);
     path.push(file_name);
@@ -58,7 +63,7 @@ pub(crate) fn write_file(tt: FileType, root: PathBuf, name: &str, contents: Vec<
     Ok(())
 }
 
-pub(crate) fn read_file(tt: FileType, root: PathBuf, name: &str) -> Result<Vec<u8>> {
+pub(crate) fn read_file(tt: FileType, root: &PathBuf, name: &str) -> Result<Vec<u8>> {
     let file_name = format!("{}.{}", name, file_ending!(&tt));
     let mut path = type_path(tt, &root);
     path.push(file_name);