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
use fortanix_sgx_abi::{Error, RESULT_SUCCESS};
use crate::collections::HashMap;
use crate::error::Error as StdError;
use crate::ffi::{OsStr, OsString};
use crate::fmt;
use crate::io;
use crate::marker::PhantomData;
use crate::path::{self, PathBuf};
use crate::str;
use crate::sync::atomic::{AtomicUsize, Ordering};
use crate::sync::Mutex;
use crate::sync::Once;
use crate::sys::{decode_error_kind, sgx_ineffective, unsupported};
use crate::vec;
pub fn errno() -> i32 {
RESULT_SUCCESS
}
pub fn error_string(errno: i32) -> String {
if errno == RESULT_SUCCESS {
"operation successful".into()
} else if ((Error::UserRangeStart as _)..=(Error::UserRangeEnd as _)).contains(&errno) {
format!("user-specified error {:08x}", errno)
} else {
decode_error_kind(errno).as_str().into()
}
}
pub fn getcwd() -> io::Result<PathBuf> {
unsupported()
}
pub fn chdir(_: &path::Path) -> io::Result<()> {
sgx_ineffective(())
}
pub struct SplitPaths<'a>(!, PhantomData<&'a ()>);
pub fn split_paths(_unparsed: &OsStr) -> SplitPaths<'_> {
panic!("unsupported")
}
impl<'a> Iterator for SplitPaths<'a> {
type Item = PathBuf;
fn next(&mut self) -> Option<PathBuf> {
self.0
}
}
#[derive(Debug)]
pub struct JoinPathsError;
pub fn join_paths<I, T>(_paths: I) -> Result<OsString, JoinPathsError>
where
I: Iterator<Item = T>,
T: AsRef<OsStr>,
{
Err(JoinPathsError)
}
impl fmt::Display for JoinPathsError {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
"not supported in SGX yet".fmt(f)
}
}
impl StdError for JoinPathsError {
#[allow(deprecated)]
fn description(&self) -> &str {
"not supported in SGX yet"
}
}
pub fn current_exe() -> io::Result<PathBuf> {
unsupported()
}
#[cfg_attr(test, linkage = "available_externally")]
#[export_name = "_ZN16__rust_internals3std3sys3sgx2os3ENVE"]
static ENV: AtomicUsize = AtomicUsize::new(0);
#[cfg_attr(test, linkage = "available_externally")]
#[export_name = "_ZN16__rust_internals3std3sys3sgx2os8ENV_INITE"]
static ENV_INIT: Once = Once::new();
type EnvStore = Mutex<HashMap<OsString, OsString>>;
fn get_env_store() -> Option<&'static EnvStore> {
unsafe { (ENV.load(Ordering::Relaxed) as *const EnvStore).as_ref() }
}
fn create_env_store() -> &'static EnvStore {
ENV_INIT.call_once(|| {
ENV.store(Box::into_raw(Box::new(EnvStore::default())) as _, Ordering::Relaxed)
});
unsafe { &*(ENV.load(Ordering::Relaxed) as *const EnvStore) }
}
pub type Env = vec::IntoIter<(OsString, OsString)>;
pub fn env() -> Env {
let clone_to_vec = |map: &HashMap<OsString, OsString>| -> Vec<_> {
map.iter().map(|(k, v)| (k.clone(), v.clone())).collect()
};
get_env_store().map(|env| clone_to_vec(&env.lock().unwrap())).unwrap_or_default().into_iter()
}
pub fn getenv(k: &OsStr) -> Option<OsString> {
get_env_store().and_then(|s| s.lock().unwrap().get(k).cloned())
}
pub fn setenv(k: &OsStr, v: &OsStr) -> io::Result<()> {
let (k, v) = (k.to_owned(), v.to_owned());
create_env_store().lock().unwrap().insert(k, v);
Ok(())
}
pub fn unsetenv(k: &OsStr) -> io::Result<()> {
if let Some(env) = get_env_store() {
env.lock().unwrap().remove(k);
}
Ok(())
}
pub fn temp_dir() -> PathBuf {
panic!("no filesystem in SGX")
}
pub fn home_dir() -> Option<PathBuf> {
None
}
pub fn exit(code: i32) -> ! {
super::abi::exit_with_code(code as _)
}
pub fn getpid() -> u32 {
panic!("no pids in SGX")
}