| // Licensed to the Apache Software Foundation (ASF) under one |
| // or more contributor license agreements. See the NOTICE file |
| // distributed with this work for additional information |
| // regarding copyright ownership. The ASF licenses this file |
| // to you 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.. |
| |
| use crate::fs; |
| use crate::io; |
| use crate::path::{Path, PathBuf}; |
| |
| use sgx_sync::SpinMutex; |
| use sgx_types::types::EnclaveId; |
| |
| static ENCLAVE: Enclave = Enclave::new(); |
| |
| #[derive(Debug)] |
| pub struct Enclave { |
| inner: SpinMutex<Inner>, |
| } |
| |
| #[derive(Debug)] |
| struct Inner { |
| eid: Option<EnclaveId>, |
| path: Option<PathBuf>, |
| } |
| |
| impl Inner { |
| const fn new() -> Inner { |
| Self { |
| eid: None, |
| path: None, |
| } |
| } |
| |
| #[inline] |
| fn get_id(&self) -> Option<EnclaveId> { |
| self.eid |
| } |
| |
| #[inline] |
| fn get_path(&self) -> Option<PathBuf> { |
| self.path.as_ref().map(|p| p.to_owned()) |
| } |
| |
| fn set_id(&mut self, eid: EnclaveId) -> io::Result<()> { |
| if eid == 0 { |
| return Err(io::const_io_error!(io::ErrorKind::InvalidInput, "eid is incorrect")); |
| } |
| self.eid = Some(eid); |
| Ok(()) |
| } |
| |
| fn set_path<P: AsRef<Path>>(&mut self, path: P) -> io::Result<()> { |
| let _ = fs::metadata(&path)?; |
| self.path = Some(path.as_ref().to_owned()); |
| Ok(()) |
| } |
| |
| #[inline] |
| unsafe fn set_path_unchecked<P: AsRef<Path>>(&mut self, path: P) -> io::Result<()> { |
| self.path = Some(path.as_ref().to_owned()); |
| Ok(()) |
| } |
| } |
| |
| impl Enclave { |
| const fn new() -> Enclave { |
| Self { |
| inner: SpinMutex::new(Inner::new()), |
| } |
| } |
| } |
| |
| impl Enclave { |
| /// |
| /// get_id is to get enclave ID. |
| /// |
| pub fn get_id() -> Option<EnclaveId> { |
| ENCLAVE.inner.lock().get_id() |
| } |
| |
| /// |
| /// set_id is to set enclave ID. |
| /// |
| pub fn set_id(eid: EnclaveId) -> io::Result<()> { |
| ENCLAVE.inner.lock().set_id(eid) |
| } |
| |
| /// |
| /// get_path is to get the path or name of the enclave. |
| /// |
| pub fn get_path() -> Option<PathBuf> { |
| ENCLAVE.inner.lock().get_path() |
| } |
| |
| /// |
| /// set_path is to set the path or name of the enclave. |
| /// |
| pub fn set_path<P: AsRef<Path>>(path: P) -> io::Result<()> { |
| ENCLAVE.inner.lock().set_path(path) |
| } |
| |
| pub(crate) unsafe fn set_path_unchecked<P: AsRef<Path>>(path: P) -> io::Result<()> { |
| ENCLAVE.inner.lock().set_path_unchecked(path) |
| } |
| } |