samplecode/unit-test/enclave/src/test_file.rs

// Copyright (c) 2017 Baidu, Inc. All Rights Reserved.
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use sgx_rand::{Rng, StdRng};
use std::fs::{self, SgxFile};
use std::io::{Read, Write};

pub fn test_file() {
    
    let mut write_data: [u8; 16] = [0; 16];
    let mut read_data: [u8; 16] = [0; 16];
    let write_size;
    let read_size;
    {
        let mut rand = StdRng::new().unwrap();
        rand.fill_bytes(&mut write_data);

        let opt = SgxFile::create("sgx_file");
        assert_eq!(opt.is_ok(), true);
        let mut file = opt.unwrap();

        let result = file.write(&write_data);
        assert_eq!(result.is_ok(), true);
        write_size = result.unwrap();
    }

    {
        let opt = SgxFile::open("sgx_file");
        assert_eq!(opt.is_ok(), true);
        let mut file = opt.unwrap();

        let result = file.read(&mut read_data);
        assert_eq!(result.is_ok(), true);
        read_size = result.unwrap();
    }

    let result = fs::remove("sgx_file");
    assert_eq!(result.is_ok(), true);

    assert_eq!(write_data, read_data);
    assert_eq!(write_size, read_size);

    {
        let opt = SgxFile::open("/");
        assert_eq!(opt.is_err(), true);
        let opt = SgxFile::open(".");
        assert_eq!(opt.is_err(), true);
        let opt = SgxFile::open("..");
        assert_eq!(opt.is_err(), true);
        let opt = SgxFile::open("?");
        assert_eq!(opt.is_err(), true);
    }
    {
        let opt = SgxFile::open("/dev/isgx");
        assert_eq!(opt.is_ok(), true);
    }
    {
        let opt = SgxFile::create("/");
        assert_eq!(opt.is_err(), true);
    }
    {
        let opt = SgxFile::create("/proc/100");
        assert_eq!(opt.is_err(), true);
        let opt = SgxFile::create(".");
        assert_eq!(opt.is_err(), true);
        let opt = SgxFile::create("..");
        assert_eq!(opt.is_err(), true);
    }
}