1 // Copyright 2018 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
11 //! System bindings for the Fortanix SGX platform
13 //! This module contains the facade (aka platform-specific) implementations of
14 //! OS level functionality for Fortanix SGX.
18 use sync::atomic::{AtomicBool, Ordering};
25 #[cfg(feature = "backtrace")]
41 pub mod stack_overflow;
51 /// This function is used to implement functionality that simply doesn't exist.
52 /// Programs relying on this functionality will need to deal with the error.
53 pub fn unsupported<T>() -> io::Result<T> {
54 Err(unsupported_err())
57 pub fn unsupported_err() -> io::Error {
58 io::Error::new(io::ErrorKind::Other,
59 "operation not supported on SGX yet")
62 /// This function is used to implement various functions that doesn't exist,
63 /// but the lack of which might not be reason for error. If no error is
64 /// returned, the program might very well be able to function normally. This is
65 /// what happens when `SGX_INEFFECTIVE_ERROR` is set to `true`. If it is
66 /// `false`, the behavior is the same as `unsupported`.
67 pub fn sgx_ineffective<T>(v: T) -> io::Result<T> {
68 static SGX_INEFFECTIVE_ERROR: AtomicBool = AtomicBool::new(false);
69 if SGX_INEFFECTIVE_ERROR.load(Ordering::Relaxed) {
70 Err(io::Error::new(io::ErrorKind::Other,
71 "operation can't be trusted to have any effect on SGX"))
77 pub fn decode_error_kind(code: i32) -> io::ErrorKind {
78 use fortanix_sgx_abi::Error;
80 // FIXME: not sure how to make sure all variants of Error are covered
81 if code == Error::NotFound as _ {
82 io::ErrorKind::NotFound
83 } else if code == Error::PermissionDenied as _ {
84 io::ErrorKind::PermissionDenied
85 } else if code == Error::ConnectionRefused as _ {
86 io::ErrorKind::ConnectionRefused
87 } else if code == Error::ConnectionReset as _ {
88 io::ErrorKind::ConnectionReset
89 } else if code == Error::ConnectionAborted as _ {
90 io::ErrorKind::ConnectionAborted
91 } else if code == Error::NotConnected as _ {
92 io::ErrorKind::NotConnected
93 } else if code == Error::AddrInUse as _ {
94 io::ErrorKind::AddrInUse
95 } else if code == Error::AddrNotAvailable as _ {
96 io::ErrorKind::AddrNotAvailable
97 } else if code == Error::BrokenPipe as _ {
98 io::ErrorKind::BrokenPipe
99 } else if code == Error::AlreadyExists as _ {
100 io::ErrorKind::AlreadyExists
101 } else if code == Error::WouldBlock as _ {
102 io::ErrorKind::WouldBlock
103 } else if code == Error::InvalidInput as _ {
104 io::ErrorKind::InvalidInput
105 } else if code == Error::InvalidData as _ {
106 io::ErrorKind::InvalidData
107 } else if code == Error::TimedOut as _ {
108 io::ErrorKind::TimedOut
109 } else if code == Error::WriteZero as _ {
110 io::ErrorKind::WriteZero
111 } else if code == Error::Interrupted as _ {
112 io::ErrorKind::Interrupted
113 } else if code == Error::Other as _ {
115 } else if code == Error::UnexpectedEof as _ {
116 io::ErrorKind::UnexpectedEof
122 // This enum is used as the storage for a bunch of types which can't actually
124 #[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Debug, Hash)]
127 pub unsafe fn strlen(mut s: *const c_char) -> usize {
136 pub unsafe fn abort_internal() -> ! {
137 abi::panic::panic_exit()
140 pub fn hashmap_random_keys() -> (u64, u64) {
141 fn rdrand64() -> u64 {
143 let mut ret: u64 = ::mem::uninitialized();
145 if ::arch::x86_64::_rdrand64_step(&mut ret) == 1 {
149 panic!("Failed to obtain random data");
152 (rdrand64(), rdrand64())