fix SEFS for SGX

rcore-fs-sefs/Cargo.toml

@@ -9,7 +9,7 @@ rcore-fs = { path = "../rcore-fs" }
 static_assertions = "0.3"
 spin = "0.4"
 log = "0.4"
-sgx_tstd = { version = "1.0.6", optional = true }
+sgx_tstd = { path = "../../rust-sgx-sdk/sgx_tstd", optional = true }
 
 [dependencies.bitvec]
 version = "0.9"

rcore-fs-sefs/src/dev/mod.rs

@@ -5,8 +5,8 @@ use rcore_fs::vfs::FsError;
 #[cfg(any(test, feature = "std"))]
 pub use self::std_impl::*;
 
-mod std_impl;
+pub mod std_impl;
-mod sgx_impl;
+pub mod sgx_impl;
 
 /// A file stores a normal file or directory.
 ///

rcore-fs-sefs/src/dev/sgx_impl.rs

@@ -6,24 +6,25 @@ use std::path::{Path, PathBuf};
 use std::sgxfs::{OpenOptions, remove, SgxFile as File};
 use std::sync::SgxMutex as Mutex;
 use std::time::{SystemTime, UNIX_EPOCH};
+use std::untrusted::time::SystemTimeEx; // FIXME: use trusted ime
 
 use rcore_fs::dev::TimeProvider;
 use rcore_fs::vfs::Timespec;
 
 use super::{DeviceError, DevResult};
 
-pub struct StdStorage {
+pub struct SgxStorage {
     path: PathBuf,
 }
 
-impl StdStorage {
+impl SgxStorage {
     pub fn new(path: impl AsRef<Path>) -> Self {
 //        assert!(path.as_ref().is_dir());
-        StdStorage { path: path.as_ref().to_path_buf() }
+        SgxStorage { path: path.as_ref().to_path_buf() }
     }
 }
 
-impl super::Storage for StdStorage {
+impl super::Storage for SgxStorage {
     fn open(&self, file_id: usize) -> DevResult<Box<super::File>> {
         let mut path = self.path.to_path_buf();
         path.push(format!("{}", file_id));
@@ -96,7 +97,7 @@ impl super::File for LockedFile {
 
 pub struct SgxTimeProvider;
 
-impl TimeProvider for StdTimeProvider {
+impl TimeProvider for SgxTimeProvider {
     fn current_time(&self) -> Timespec {
         let duration = SystemTime::now().duration_since(UNIX_EPOCH).unwrap();
         Timespec {