1 //! System bindings for the Fortanix SGX platform
3 //! This module contains the facade (aka platform-specific) implementations of
4 //! OS level functionality for Fortanix SGX.
8 use sync::atomic::{AtomicBool, Ordering};
15 #[cfg(feature = "backtrace")]
32 pub mod stack_overflow;
42 /// This function is used to implement functionality that simply doesn't exist.
43 /// Programs relying on this functionality will need to deal with the error.
44 pub fn unsupported<T>() -> io::Result<T> {
45 Err(unsupported_err())
48 pub fn unsupported_err() -> io::Error {
49 io::Error::new(io::ErrorKind::Other,
50 "operation not supported on SGX yet")
53 /// This function is used to implement various functions that doesn't exist,
54 /// but the lack of which might not be reason for error. If no error is
55 /// returned, the program might very well be able to function normally. This is
56 /// what happens when `SGX_INEFFECTIVE_ERROR` is set to `true`. If it is
57 /// `false`, the behavior is the same as `unsupported`.
58 pub fn sgx_ineffective<T>(v: T) -> io::Result<T> {
59 static SGX_INEFFECTIVE_ERROR: AtomicBool = AtomicBool::new(false);
60 if SGX_INEFFECTIVE_ERROR.load(Ordering::Relaxed) {
61 Err(io::Error::new(io::ErrorKind::Other,
62 "operation can't be trusted to have any effect on SGX"))
68 pub fn decode_error_kind(code: i32) -> io::ErrorKind {
69 use fortanix_sgx_abi::Error;
71 // FIXME: not sure how to make sure all variants of Error are covered
72 if code == Error::NotFound as _ {
73 io::ErrorKind::NotFound
74 } else if code == Error::PermissionDenied as _ {
75 io::ErrorKind::PermissionDenied
76 } else if code == Error::ConnectionRefused as _ {
77 io::ErrorKind::ConnectionRefused
78 } else if code == Error::ConnectionReset as _ {
79 io::ErrorKind::ConnectionReset
80 } else if code == Error::ConnectionAborted as _ {
81 io::ErrorKind::ConnectionAborted
82 } else if code == Error::NotConnected as _ {
83 io::ErrorKind::NotConnected
84 } else if code == Error::AddrInUse as _ {
85 io::ErrorKind::AddrInUse
86 } else if code == Error::AddrNotAvailable as _ {
87 io::ErrorKind::AddrNotAvailable
88 } else if code == Error::BrokenPipe as _ {
89 io::ErrorKind::BrokenPipe
90 } else if code == Error::AlreadyExists as _ {
91 io::ErrorKind::AlreadyExists
92 } else if code == Error::WouldBlock as _ {
93 io::ErrorKind::WouldBlock
94 } else if code == Error::InvalidInput as _ {
95 io::ErrorKind::InvalidInput
96 } else if code == Error::InvalidData as _ {
97 io::ErrorKind::InvalidData
98 } else if code == Error::TimedOut as _ {
99 io::ErrorKind::TimedOut
100 } else if code == Error::WriteZero as _ {
101 io::ErrorKind::WriteZero
102 } else if code == Error::Interrupted as _ {
103 io::ErrorKind::Interrupted
104 } else if code == Error::Other as _ {
106 } else if code == Error::UnexpectedEof as _ {
107 io::ErrorKind::UnexpectedEof
113 // This enum is used as the storage for a bunch of types which can't actually
115 #[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Debug, Hash)]
118 pub unsafe fn strlen(mut s: *const c_char) -> usize {
127 pub unsafe fn abort_internal() -> ! {
128 abi::usercalls::exit(true)
131 pub fn hashmap_random_keys() -> (u64, u64) {
132 fn rdrand64() -> u64 {
134 let mut ret: u64 = ::mem::uninitialized();
136 if ::arch::x86_64::_rdrand64_step(&mut ret) == 1 {
140 panic!("Failed to obtain random data");
143 (rdrand64(), rdrand64())
146 pub use sys_common::{AsInner, FromInner, IntoInner};
148 pub trait TryIntoInner<Inner>: Sized {
149 fn try_into_inner(self) -> Result<Inner, Self>;