1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
|
//! System bindings for the Fortanix SGX platform
//!
//! This module contains the facade (aka platform-specific) implementations of
//! OS level functionality for Fortanix SGX.
#![deny(unsafe_op_in_unsafe_fn)]
#![allow(fuzzy_provenance_casts)] // FIXME: this entire module systematically confuses pointers and integers
use crate::io::ErrorKind;
use crate::sync::atomic::{AtomicBool, Ordering};
pub mod abi;
mod waitqueue;
pub mod alloc;
pub mod args;
#[path = "../unix/cmath.rs"]
pub mod cmath;
pub mod env;
pub mod fd;
#[path = "../unsupported/fs.rs"]
pub mod fs;
#[path = "../unsupported/io.rs"]
pub mod io;
pub mod memchr;
pub mod net;
pub mod os;
#[path = "../unix/os_str.rs"]
pub mod os_str;
pub mod path;
#[path = "../unsupported/pipe.rs"]
pub mod pipe;
#[path = "../unsupported/process.rs"]
pub mod process;
pub mod stdio;
pub mod thread;
pub mod thread_local_key;
pub mod time;
mod condvar;
mod mutex;
mod rwlock;
pub mod locks {
pub use super::condvar::*;
pub use super::mutex::*;
pub use super::rwlock::*;
}
// SAFETY: must be called only once during runtime initialization.
// NOTE: this is not guaranteed to run, for example when Rust code is called externally.
pub unsafe fn init(argc: isize, argv: *const *const u8, _sigpipe: u8) {
unsafe {
args::init(argc, argv);
}
}
// SAFETY: must be called only once during runtime cleanup.
// NOTE: this is not guaranteed to run, for example when the program aborts.
pub unsafe fn cleanup() {}
/// This function is used to implement functionality that simply doesn't exist.
/// Programs relying on this functionality will need to deal with the error.
pub fn unsupported<T>() -> crate::io::Result<T> {
Err(unsupported_err())
}
pub fn unsupported_err() -> crate::io::Error {
crate::io::const_io_error!(ErrorKind::Unsupported, "operation not supported on SGX yet")
}
/// This function is used to implement various functions that doesn't exist,
/// but the lack of which might not be reason for error. If no error is
/// returned, the program might very well be able to function normally. This is
/// what happens when `SGX_INEFFECTIVE_ERROR` is set to `true`. If it is
/// `false`, the behavior is the same as `unsupported`.
pub fn sgx_ineffective<T>(v: T) -> crate::io::Result<T> {
static SGX_INEFFECTIVE_ERROR: AtomicBool = AtomicBool::new(false);
if SGX_INEFFECTIVE_ERROR.load(Ordering::Relaxed) {
Err(crate::io::const_io_error!(
ErrorKind::Uncategorized,
"operation can't be trusted to have any effect on SGX",
))
} else {
Ok(v)
}
}
pub fn decode_error_kind(code: i32) -> ErrorKind {
use fortanix_sgx_abi::Error;
// FIXME: not sure how to make sure all variants of Error are covered
if code == Error::NotFound as _ {
ErrorKind::NotFound
} else if code == Error::PermissionDenied as _ {
ErrorKind::PermissionDenied
} else if code == Error::ConnectionRefused as _ {
ErrorKind::ConnectionRefused
} else if code == Error::ConnectionReset as _ {
ErrorKind::ConnectionReset
} else if code == Error::ConnectionAborted as _ {
ErrorKind::ConnectionAborted
} else if code == Error::NotConnected as _ {
ErrorKind::NotConnected
} else if code == Error::AddrInUse as _ {
ErrorKind::AddrInUse
} else if code == Error::AddrNotAvailable as _ {
ErrorKind::AddrNotAvailable
} else if code == Error::BrokenPipe as _ {
ErrorKind::BrokenPipe
} else if code == Error::AlreadyExists as _ {
ErrorKind::AlreadyExists
} else if code == Error::WouldBlock as _ {
ErrorKind::WouldBlock
} else if code == Error::InvalidInput as _ {
ErrorKind::InvalidInput
} else if code == Error::InvalidData as _ {
ErrorKind::InvalidData
} else if code == Error::TimedOut as _ {
ErrorKind::TimedOut
} else if code == Error::WriteZero as _ {
ErrorKind::WriteZero
} else if code == Error::Interrupted as _ {
ErrorKind::Interrupted
} else if code == Error::Other as _ {
ErrorKind::Uncategorized
} else if code == Error::UnexpectedEof as _ {
ErrorKind::UnexpectedEof
} else {
ErrorKind::Uncategorized
}
}
pub fn abort_internal() -> ! {
abi::usercalls::exit(true)
}
// This function is needed by the panic runtime. The symbol is named in
// pre-link args for the target specification, so keep that in sync.
#[cfg(not(test))]
#[no_mangle]
// NB. used by both libunwind and libpanic_abort
pub extern "C" fn __rust_abort() {
abort_internal();
}
pub mod rand {
pub fn rdrand64() -> u64 {
unsafe {
let mut ret: u64 = 0;
for _ in 0..10 {
if crate::arch::x86_64::_rdrand64_step(&mut ret) == 1 {
return ret;
}
}
rtabort!("Failed to obtain random data");
}
}
}
pub fn hashmap_random_keys() -> (u64, u64) {
(self::rand::rdrand64(), self::rand::rdrand64())
}
pub use crate::sys_common::{AsInner, FromInner, IntoInner};
pub trait TryIntoInner<Inner>: Sized {
fn try_into_inner(self) -> Result<Inner, Self>;
}
|
