foster/denoland-deno
1
0
Fork 0
mirror of https://github.com/denoland/deno.git synced 2024-11-22 15:06:54 -05:00
Code Issues Packages 1 Wiki Activity

build: require safety comments on unsafe code (#13870)

Browse source 
Co-authored-by: Bartek Iwańczuk <biwanczuk@gmail.com>
Co-authored-by: Divy Srivastava <dj.srivastava23@gmail.com>
This commit is contained in:
Luca Casonato 2022-06-26 00:13:24 +02:00 committed by David Sherret
parent d3e107768a
commit 86618e9bad
29 changed files with 294 additions and 87 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

10
cli/bench/http.rs
View file

@ -153,11 +153,13 @@ fn run(
fn get_port() -> u16 {
static mut NEXT_PORT: u16 = 4544;
let port = unsafe { NEXT_PORT };
unsafe {
// TODO(bartlomieju):
#[allow(clippy::undocumented_unsafe_blocks)]
let port = unsafe {
let p = NEXT_PORT;
NEXT_PORT += 1;
}
p
};
port
}

8
cli/deno_dir.rs
View file

@ -76,7 +76,13 @@ mod dirs {
pub fn home_dir() -> Option<PathBuf> {
std::env::var_os("HOME")
.and_then(|h| if h.is_empty() { None } else { Some(h) })
.or_else(|| unsafe { fallback() })
.or_else(|| {
// TODO(bartlomieju):
#[allow(clippy::undocumented_unsafe_blocks)]
unsafe {
fallback()
}
})
.map(PathBuf::from)
}

6
cli/lsp/logging.rs
View file

@ -21,7 +21,11 @@ pub fn set_lsp_log_level(level: log::Level) {
pub fn lsp_log_level() -> log::Level {
let level = LSP_LOG_LEVEL.load(Ordering::SeqCst);
unsafe { std::mem::transmute(level) }
// TODO(bartlomieju):
#[allow(clippy::undocumented_unsafe_blocks)]
unsafe {
std::mem::transmute(level)
}
}
/// Use this macro to do "info" logs in the lsp code. This allows

2
cli/lsp/parent_process_checker.rs
View file

@ -20,6 +20,8 @@ pub fn start(parent_process_id: u32) {
#[cfg(unix)]
fn is_process_active(process_id: u32) -> bool {
// TODO(bartlomieju):
#[allow(clippy::undocumented_unsafe_blocks)]
unsafe {
// signal of 0 checks for the existence of the process id
libc::kill(process_id as i32, 0) == 0

2
cli/unix_util.rs
View file

@ -4,6 +4,8 @@
/// This is the difference between `ulimit -n` and `ulimit -n -H`.
pub fn raise_fd_limit() {
#[cfg(unix)]
// TODO(bartlomieju):
#[allow(clippy::undocumented_unsafe_blocks)]
unsafe {
let mut limits = libc::rlimit {
rlim_cur: 0,

25
core/async_cancel.rs
View file

@ -302,13 +302,19 @@ mod internal {
Some((head, rc)) => {
// Register this `Cancelable` node with a `CancelHandle` head node.
assert_ne!(self, head);
// TODO(piscisaureus): safety comment
#[allow(clippy::undocumented_unsafe_blocks)]
let self_inner = unsafe { &mut *self.inner.get() };
// TODO(piscisaureus): safety comment
#[allow(clippy::undocumented_unsafe_blocks)]
let head_inner = unsafe { &mut *head.inner.get() };
self_inner.link(waker, head_inner, rc)
}
None => {
// This `Cancelable` has already been linked to a `CancelHandle` head
// node; just update our stored `Waker` if necessary.
// TODO(piscisaureus): safety comment
#[allow(clippy::undocumented_unsafe_blocks)]
let inner = unsafe { &mut *self.inner.get() };
inner.update_waker(waker)
}
@ -316,11 +322,15 @@ mod internal {
}
pub fn cancel(&self) {
// TODO(piscisaureus): safety comment
#[allow(clippy::undocumented_unsafe_blocks)]
let inner = unsafe { &mut *self.inner.get() };
inner.cancel();
}
pub fn is_canceled(&self) -> bool {
// TODO(piscisaureus): safety comment
#[allow(clippy::undocumented_unsafe_blocks)]
let inner = unsafe { &mut *self.inner.get() };
inner.is_canceled()
}
@ -337,6 +347,8 @@ mod internal {
impl Drop for Node {
fn drop(&mut self) {
// TODO(piscisaureus): safety comment
#[allow(clippy::undocumented_unsafe_blocks)]
let inner = unsafe { &mut *self.inner.get() };
inner.unlink();
}
@ -392,6 +404,8 @@ mod internal {
prev: next_prev_nn,
..
} => {
// TODO(piscisaureus): safety comment
#[allow(clippy::undocumented_unsafe_blocks)]
let prev = unsafe { &mut *next_prev_nn.as_ptr() };
match prev {
NodeInner::Linked {
@ -444,10 +458,14 @@ mod internal {
if prev_nn == next_nn {
// There were only two nodes in this chain; after unlinking ourselves
// the other node is no longer linked.
// TODO(piscisaureus): safety comment
#[allow(clippy::undocumented_unsafe_blocks)]
let other = unsafe { prev_nn.as_mut() };
*other = NodeInner::Unlinked;
} else {
// The chain had more than two nodes.
// TODO(piscisaureus): safety comment
#[allow(clippy::undocumented_unsafe_blocks)]
match unsafe { prev_nn.as_mut() } {
NodeInner::Linked {
next: prev_next_nn, ..
@ -456,6 +474,8 @@ mod internal {
}
_ => unreachable!(),
}
// TODO(piscisaureus): safety comment
#[allow(clippy::undocumented_unsafe_blocks)]
match unsafe { next_nn.as_mut() } {
NodeInner::Linked {
prev: next_prev_nn, ..
@ -473,6 +493,8 @@ mod internal {
fn cancel(&mut self) {
let mut head_nn = NonNull::from(self);
// TODO(piscisaureus): safety comment
#[allow(clippy::undocumented_unsafe_blocks)]
// Mark the head node as canceled.
let mut item_nn =
match replace(unsafe { head_nn.as_mut() }, NodeInner::Canceled) {
@ -487,6 +509,8 @@ mod internal {
// Cancel all item nodes in the chain, waking each stored `Waker`.
while item_nn != head_nn {
// TODO(piscisaureus): safety comment
#[allow(clippy::undocumented_unsafe_blocks)]
match replace(unsafe { item_nn.as_mut() }, NodeInner::Canceled) {
NodeInner::Linked {
kind: NodeKind::Item { waker },
@ -745,6 +769,7 @@ mod tests {
assert!(Rc::get_mut(&mut cancel_handle).is_some());
let mut future = pending::<Never>().or_cancel(&cancel_handle);
// SAFETY: `Cancelable` pins the future
let future = unsafe { Pin::new_unchecked(&mut future) };
// There are two `Rc<CancelHandle>` references now, so this fails.

34
core/async_cell.rs
View file

@ -157,12 +157,16 @@ impl<T: 'static> RcRef<T> {
map_fn: F,
) -> RcRef<T> {
let RcRef::<S> { rc, value } = source.into();
// TODO(piscisaureus): safety comment
#[allow(clippy::undocumented_unsafe_blocks)]
let value = map_fn(unsafe { &*value });
RcRef { rc, value }
}
pub(crate) fn split(rc_ref: &Self) -> (&T, &Rc<dyn Any>) {
let &Self { ref rc, value } = rc_ref;
// TODO(piscisaureus): safety comment
#[allow(clippy::undocumented_unsafe_blocks)]
(unsafe { &*value }, rc)
}
}
@ -206,7 +210,11 @@ impl<T: 'static> From<&Rc<T>> for RcRef<T> {
impl<T> Deref for RcRef<T> {
type Target = T;
fn deref(&self) -> &Self::Target {
unsafe { &*self.value }
// TODO(piscisaureus): safety comment
#[allow(clippy::undocumented_unsafe_blocks)]
unsafe {
&*self.value
}
}
}
@ -260,6 +268,8 @@ mod internal {
// Don't allow synchronous borrows to cut in line; if there are any
// enqueued waiters, return `None`, even if the current borrow is a shared
// one and the requested borrow is too.
// TODO(piscisaureus): safety comment
#[allow(clippy::undocumented_unsafe_blocks)]
let waiters = unsafe { &mut *cell_ref.waiters.as_ptr() };
if waiters.is_empty() {
// There are no enqueued waiters, but it is still possible that the cell
@ -288,6 +298,8 @@ mod internal {
let waiter = Waiter::new(M::borrow_mode());
let turn = self.turn.get();
let index = {
// TODO(piscisaureus): safety comment
#[allow(clippy::undocumented_unsafe_blocks)]
let waiters = unsafe { &mut *self.waiters.as_ptr() };
waiters.push_back(Some(waiter));
waiters.len() - 1
@ -315,6 +327,8 @@ mod internal {
Poll::Ready(())
} else {
// This waiter is still in line and has not yet been woken.
// TODO(piscisaureus): safety comment
#[allow(clippy::undocumented_unsafe_blocks)]
let waiters = unsafe { &mut *self.waiters.as_ptr() };
// Sanity check: id cannot be higher than the last queue element.
assert!(id < turn + waiters.len());
@ -330,6 +344,8 @@ mod internal {
fn wake_waiters(&self) {
let mut borrow_count = self.borrow_count.get();
// TODO(piscisaureus): safety comment
#[allow(clippy::undocumented_unsafe_blocks)]
let waiters = unsafe { &mut *self.waiters.as_ptr() };
let mut turn = self.turn.get();
@ -379,6 +395,8 @@ mod internal {
self.drop_borrow::<M>();
} else {
// This waiter is still in the queue, take it out and leave a "hole".
// TODO(piscisaureus): safety comment
#[allow(clippy::undocumented_unsafe_blocks)]
let waiters = unsafe { &mut *self.waiters.as_ptr() };
waiters[id - turn].take().unwrap();
}
@ -411,6 +429,8 @@ mod internal {
type Output = AsyncBorrowImpl<T, M>;
fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
ready!(self.cell.as_ref().unwrap().poll_waiter::<M>(self.id, cx));
// TODO(piscisaureus): safety comment
#[allow(clippy::undocumented_unsafe_blocks)]
let self_mut = unsafe { Pin::get_unchecked_mut(self) };
let cell = self_mut.cell.take().unwrap();
Poll::Ready(AsyncBorrowImpl::<T, M>::new(cell))
@ -448,7 +468,11 @@ mod internal {
impl<T, M: BorrowModeTrait> Deref for AsyncBorrowImpl<T, M> {
type Target = T;
fn deref(&self) -> &Self::Target {
unsafe { &*self.cell.as_ptr() }
// TODO(piscisaureus): safety comment
#[allow(clippy::undocumented_unsafe_blocks)]
unsafe {
&*self.cell.as_ptr()
}
}
}
@ -466,7 +490,11 @@ mod internal {
impl<T> DerefMut for AsyncBorrowImpl<T, Exclusive> {
fn deref_mut(&mut self) -> &mut Self::Target {
unsafe { &mut *self.cell.as_ptr() }
// TODO(piscisaureus): safety comment
#[allow(clippy::undocumented_unsafe_blocks)]
unsafe {
&mut *self.cell.as_ptr()
}
}
}

4
core/bindings.rs
View file

@ -147,6 +147,7 @@ pub extern "C" fn host_import_module_dynamically_callback(
specifier: v8::Local<v8::String>,
import_assertions: v8::Local<v8::FixedArray>,
) -> *mut v8::Promise {
// SAFETY: `CallbackScope` can be safely constructed from `Local<Context>`
let scope = &mut unsafe { v8::CallbackScope::new(context) };
// NOTE(bartlomieju): will crash for non-UTF-8 specifier
@ -253,6 +254,7 @@ pub extern "C" fn host_initialize_import_meta_object_callback(
module: v8::Local<v8::Module>,
meta: v8::Local<v8::Object>,
) {
// SAFETY: `CallbackScope` can be safely constructed from `Local<Context>`
let scope = &mut unsafe { v8::CallbackScope::new(context) };
let module_map_rc = JsRuntime::module_map(scope);
let module_map = module_map_rc.borrow();
@ -274,6 +276,7 @@ pub extern "C" fn host_initialize_import_meta_object_callback(
pub extern "C" fn promise_reject_callback(message: v8::PromiseRejectMessage) {
use v8::PromiseRejectEvent::*;
// SAFETY: `CallbackScope` can be safely constructed from `&PromiseRejectMessage`
let scope = &mut unsafe { v8::CallbackScope::new(&message) };
let state_rc = JsRuntime::state(scope);
@ -418,6 +421,7 @@ pub fn module_resolve_callback<'s>(
import_assertions: v8::Local<'s, v8::FixedArray>,
referrer: v8::Local<'s, v8::Module>,
) -> Option<v8::Local<'s, v8::Module>> {
// SAFETY: `CallbackScope` can be safely constructed from `Local<Context>`
let scope = &mut unsafe { v8::CallbackScope::new(context) };
let module_map_rc = JsRuntime::module_map(scope);

13
core/inspector.rs
View file

@ -485,6 +485,8 @@ impl task::ArcWake for InspectorWaker {
_isolate: &mut v8::Isolate,
arg: *mut c_void,
) {
// SAFETY: `InspectorWaker` is owned by `JsRuntimeInspector`, so the
// pointer to the latter is valid as long as waker is alive.
let inspector = unsafe { &*(arg as *mut JsRuntimeInspector) };
let _ = inspector.poll_sessions(None);
}
@ -521,6 +523,8 @@ impl InspectorSession {
let v8_channel = v8::inspector::ChannelBase::new::<Self>();
let mut v8_inspector = v8_inspector_rc.borrow_mut();
let v8_inspector_ptr = v8_inspector.as_mut().unwrap();
// TODO(piscisaureus): safety comment
#[allow(clippy::undocumented_unsafe_blocks)]
let v8_session = v8_inspector_ptr.connect(
Self::CONTEXT_GROUP_ID,
// Todo(piscisaureus): V8Inspector::connect() should require that
@ -544,6 +548,8 @@ impl InspectorSession {
msg: String,
) {
let msg = v8::inspector::StringView::from(msg.as_bytes());
// SAFETY: `InspectorSession` is the only owner of `v8_session_ptr`, so
// the pointer is valid for as long the struct.
unsafe {
(*v8_session_ptr).dispatch_protocol_message(msg);
};
@ -731,6 +737,9 @@ impl LocalInspectorSession {
fn new_box_with<T>(new_fn: impl FnOnce(*mut T) -> T) -> Box<T> {
let b = Box::new(MaybeUninit::<T>::uninit());
let p = Box::into_raw(b) as *mut T;
unsafe { ptr::write(p, new_fn(p)) };
unsafe { Box::from_raw(p) }
// SAFETY: memory layout for `T` is ensured on first line of this function
unsafe {
ptr::write(p, new_fn(p));
Box::from_raw(p)
}
}

1
core/modules.rs
View file

@ -122,6 +122,7 @@ fn json_module_evaluation_steps<'a>(
context: v8::Local<'a, v8::Context>,
module: v8::Local<v8::Module>,
) -> Option<v8::Local<'a, v8::Value>> {
// SAFETY: `CallbackScope` can be safely constructed from `Local<Context>`
let scope = &mut unsafe { v8::CallbackScope::new(context) };
let tc_scope = &mut v8::TryCatch::new(scope);
let module_map = tc_scope

2
core/ops.rs
View file

@ -63,6 +63,8 @@ impl<T> Future for OpCall<T> {
self: std::pin::Pin<&mut Self>,
cx: &mut std::task::Context<'_>,
) -> std::task::Poll<Self::Output> {
// TODO(piscisaureus): safety comment
#[allow(clippy::undocumented_unsafe_blocks)]
let inner = unsafe { &mut self.get_unchecked_mut().0 };
let mut pinned = Pin::new(inner);
ready!(pinned.as_mut().poll(cx));

5
core/ops_metrics.rs
View file

@ -56,12 +56,17 @@ impl OpsTracker {
#[allow(clippy::mut_from_ref)]
#[inline]
fn ops_mut(&self) -> &mut Vec<OpMetrics> {
// SAFETY: `OpsTracker` is created after registering ops so it is guaranteed
// that that `ops` will be initialized.
unsafe { &mut *self.ops.get() }
}
#[allow(clippy::mut_from_ref)]
#[inline]
fn metrics_mut(&self, id: OpId) -> &mut OpMetrics {
// SAFETY: `OpsTracker` is created after registering ops, and ops
// cannot be unregistered during runtime, so it is guaranteed that `id`
// is not causing out-of-bound access.
unsafe { self.ops_mut().get_unchecked_mut(id) }
}

2
core/resources.rs
View file

@ -77,6 +77,8 @@ impl dyn Resource {
pub fn downcast_rc<'a, T: Resource>(self: &'a Rc<Self>) -> Option<&'a Rc<T>> {
if self.is::<T>() {
let ptr = self as *const Rc<_> as *const Rc<T>;
// TODO(piscisaureus): safety comment
#[allow(clippy::undocumented_unsafe_blocks)]
Some(unsafe { &*ptr })
} else {
None

5
core/runtime.rs
View file

@ -333,6 +333,9 @@ impl JsRuntime {
assert!(options.startup_snapshot.is_none());
let mut creator =
v8::SnapshotCreator::new(Some(&bindings::EXTERNAL_REFERENCES));
// SAFETY: `get_owned_isolate` is unsafe because it may only be called
// once. This is the only place we call this function, so this call is
// safe.
let isolate = unsafe { creator.get_owned_isolate() };
let mut isolate = JsRuntime::setup_isolate(isolate);
{
@ -1028,6 +1031,8 @@ extern "C" fn near_heap_limit_callback<F>(
where
F: FnMut(usize, usize) -> usize,
{
// SAFETY: The data is a pointer to the Rust callback function. It is stored
// in `JsRuntime::allocations` and thus is guaranteed to outlive the isolate.
let callback = unsafe { &mut *(data as *mut F) };
callback(current_heap_limit, initial_heap_limit)
}

128
ext/ffi/lib.rs
View file

@ -130,6 +130,8 @@ impl DynamicLibraryResource {
// By default, Err returned by this function does not tell
// which symbol wasn't exported. So we'll modify the error
// message to include the name of symbol.
//
// SAFETY: The obtained T symbol is the size of a pointer.
let fn_ptr = match unsafe { self.lib.symbol::<*const c_void>(symbol) } {
Ok(value) => Ok(value),
Err(err) => Err(generic_error(format!(
@ -164,6 +166,8 @@ impl DynamicLibraryResource {
// By default, Err returned by this function does not tell
// which symbol wasn't exported. So we'll modify the error
// message to include the name of symbol.
//
// SAFETY: The obtained T symbol is the size of a pointer.
match unsafe { self.lib.symbol::<*const c_void>(&symbol) } {
Ok(value) => Ok(Ok(value)),
Err(err) => Err(generic_error(format!(
@ -743,55 +747,60 @@ fn ffi_call(
let call_args: Vec<Arg> = call_args
.iter()
.enumerate()
.map(|(index, ffi_arg)| unsafe {
ffi_arg.as_arg(*parameter_types.get(index).unwrap())
.map(|(index, ffi_arg)| {
// SAFETY: the union field is initialized
unsafe { ffi_arg.as_arg(*parameter_types.get(index).unwrap()) }
})
.collect();
Ok(match result_type {
NativeType::Void => NativeValue {
void_value: unsafe { cif.call::<()>(fun_ptr, &call_args) },
},
NativeType::U8 => NativeValue {
u8_value: unsafe { cif.call::<u8>(fun_ptr, &call_args) },
},
NativeType::I8 => NativeValue {
i8_value: unsafe { cif.call::<i8>(fun_ptr, &call_args) },
},
NativeType::U16 => NativeValue {
u16_value: unsafe { cif.call::<u16>(fun_ptr, &call_args) },
},
NativeType::I16 => NativeValue {
i16_value: unsafe { cif.call::<i16>(fun_ptr, &call_args) },
},
NativeType::U32 => NativeValue {
u32_value: unsafe { cif.call::<u32>(fun_ptr, &call_args) },
},
NativeType::I32 => NativeValue {
i32_value: unsafe { cif.call::<i32>(fun_ptr, &call_args) },
},
NativeType::U64 => NativeValue {
u64_value: unsafe { cif.call::<u64>(fun_ptr, &call_args) },
},
NativeType::I64 => NativeValue {
i64_value: unsafe { cif.call::<i64>(fun_ptr, &call_args) },
},
NativeType::USize => NativeValue {
usize_value: unsafe { cif.call::<usize>(fun_ptr, &call_args) },
},
NativeType::ISize => NativeValue {
isize_value: unsafe { cif.call::<isize>(fun_ptr, &call_args) },
},
NativeType::F32 => NativeValue {
f32_value: unsafe { cif.call::<f32>(fun_ptr, &call_args) },
},
NativeType::F64 => NativeValue {
f64_value: unsafe { cif.call::<f64>(fun_ptr, &call_args) },
},
NativeType::Pointer | NativeType::Function => NativeValue {
pointer: unsafe { cif.call::<*const u8>(fun_ptr, &call_args) },
},
})
// SAFETY: types in the `Cif` match the actual calling convention and
// types of symbol.
unsafe {
Ok(match result_type {
NativeType::Void => NativeValue {
void_value: cif.call::<()>(fun_ptr, &call_args),
},
NativeType::U8 => NativeValue {
u8_value: cif.call::<u8>(fun_ptr, &call_args),
},
NativeType::I8 => NativeValue {
i8_value: cif.call::<i8>(fun_ptr, &call_args),
},
NativeType::U16 => NativeValue {
u16_value: cif.call::<u16>(fun_ptr, &call_args),
},
NativeType::I16 => NativeValue {
i16_value: cif.call::<i16>(fun_ptr, &call_args),
},
NativeType::U32 => NativeValue {
u32_value: cif.call::<u32>(fun_ptr, &call_args),
},
NativeType::I32 => NativeValue {
i32_value: cif.call::<i32>(fun_ptr, &call_args),
},
NativeType::U64 => NativeValue {
u64_value: cif.call::<u64>(fun_ptr, &call_args),
},
NativeType::I64 => NativeValue {
i64_value: cif.call::<i64>(fun_ptr, &call_args),
},
NativeType::USize => NativeValue {
usize_value: cif.call::<usize>(fun_ptr, &call_args),
},
NativeType::ISize => NativeValue {
isize_value: cif.call::<isize>(fun_ptr, &call_args),
},
NativeType::F32 => NativeValue {
f32_value: cif.call::<f32>(fun_ptr, &call_args),
},
NativeType::F64 => NativeValue {
f64_value: cif.call::<f64>(fun_ptr, &call_args),
},
NativeType::Pointer | NativeType::Function => NativeValue {
pointer: cif.call::<*const u8>(fun_ptr, &call_args),
},
})
}
}
struct UnsafeCallbackResource {
@ -1201,71 +1210,83 @@ fn op_ffi_get_static<'scope>(
return Err(type_error("Invalid FFI static type 'void'"));
}
NativeType::U8 => {
// SAFETY: ptr is user provided
let result = unsafe { ptr::read_unaligned(data_ptr as *const u8) };
let number: v8::Local<v8::Value> =
v8::Integer::new_from_unsigned(scope, result as u32).into();
number.into()
}
NativeType::I8 => {
// SAFETY: ptr is user provided
let result = unsafe { ptr::read_unaligned(data_ptr as *const i8) };
let number: v8::Local<v8::Value> =
v8::Integer::new(scope, result as i32).into();
number.into()
}
NativeType::U16 => {
// SAFETY: ptr is user provided
let result = unsafe { ptr::read_unaligned(data_ptr as *const u16) };
let number: v8::Local<v8::Value> =
v8::Integer::new_from_unsigned(scope, result as u32).into();
number.into()
}
NativeType::I16 => {
// SAFETY: ptr is user provided
let result = unsafe { ptr::read_unaligned(data_ptr as *const i16) };
let number: v8::Local<v8::Value> =
v8::Integer::new(scope, result as i32).into();
number.into()
}
NativeType::U32 => {
// SAFETY: ptr is user provided
let result = unsafe { ptr::read_unaligned(data_ptr as *const u32) };
let number: v8::Local<v8::Value> =
v8::Integer::new_from_unsigned(scope, result).into();
number.into()
}
NativeType::I32 => {
// SAFETY: ptr is user provided
let result = unsafe { ptr::read_unaligned(data_ptr as *const i32) };
let number: v8::Local<v8::Value> = v8::Integer::new(scope, result).into();
number.into()
}
NativeType::U64 => {
// SAFETY: ptr is user provided
let result = unsafe { ptr::read_unaligned(data_ptr as *const u64) };
let big_int: v8::Local<v8::Value> =
v8::BigInt::new_from_u64(scope, result).into();
big_int.into()
}
NativeType::I64 => {
// SAFETY: ptr is user provided
let result = unsafe { ptr::read_unaligned(data_ptr as *const i64) };
let big_int: v8::Local<v8::Value> =
v8::BigInt::new_from_i64(scope, result).into();
big_int.into()
}
NativeType::USize => {
// SAFETY: ptr is user provided
let result = unsafe { ptr::read_unaligned(data_ptr as *const usize) };
let big_int: v8::Local<v8::Value> =
v8::BigInt::new_from_u64(scope, result as u64).into();
big_int.into()
}
NativeType::ISize => {
// SAFETY: ptr is user provided
let result = unsafe { ptr::read_unaligned(data_ptr as *const isize) };
let big_int: v8::Local<v8::Value> =
v8::BigInt::new_from_i64(scope, result as i64).into();
big_int.into()
}
NativeType::F32 => {
// SAFETY: ptr is user provided
let result = unsafe { ptr::read_unaligned(data_ptr as *const f32) };
let number: v8::Local<v8::Value> =
v8::Number::new(scope, result as f64).into();
number.into()
}
NativeType::F64 => {
// SAFETY: ptr is user provided
let result = unsafe { ptr::read_unaligned(data_ptr as *const f64) };
let number: v8::Local<v8::Value> = v8::Number::new(scope, result).into();
number.into()
@ -1339,7 +1360,7 @@ fn op_ffi_call_nonblocking<'scope>(
cif,
ptr,
parameter_types,
..
result_type,
} = symbol.clone();
ffi_call(call_args, &cif, ptr, &parameter_types, result_type)
});
@ -1392,6 +1413,8 @@ where
))
} else {
let src = src as *const u8;
// SAFETY: src is user defined.
// dest is properly aligned and is valid for writes of len * size_of::<T>() bytes.
unsafe { ptr::copy(src, dst.as_mut_ptr(), len) };
Ok(())
}
@ -1411,6 +1434,8 @@ where
permissions.check(None)?;
let ptr = ptr as *const c_char;
// SAFETY: ptr is user provided
// lifetime validity is not an issue because we allocate a new string.
Ok(unsafe { CStr::from_ptr(ptr) }.to_str()?.to_string())
}
@ -1427,6 +1452,7 @@ where
let permissions = state.borrow_mut::<FP>();
permissions.check(None)?;
// SAFETY: ptr is user provided.
Ok(unsafe { ptr::read_unaligned(ptr as *const u8) })
}
@ -1443,6 +1469,7 @@ where
let permissions = state.borrow_mut::<FP>();
permissions.check(None)?;
// SAFETY: ptr is user provided.
Ok(unsafe { ptr::read_unaligned(ptr as *const i8) })
}
@ -1459,6 +1486,7 @@ where
let permissions = state.borrow_mut::<FP>();
permissions.check(None)?;
// SAFETY: ptr is user provided.
Ok(unsafe { ptr::read_unaligned(ptr as *const u16) })
}
@ -1475,6 +1503,7 @@ where
let permissions = state.borrow_mut::<FP>();
permissions.check(None)?;
// SAFETY: ptr is user provided.
Ok(unsafe { ptr::read_unaligned(ptr as *const i16) })
}
@ -1491,6 +1520,7 @@ where
let permissions = state.borrow_mut::<FP>();
permissions.check(None)?;
// SAFETY: ptr is user provided.
Ok(unsafe { ptr::read_unaligned(ptr as *const u32) })
}
@ -1507,6 +1537,7 @@ where
let permissions = state.borrow_mut::<FP>();
permissions.check(None)?;
// SAFETY: ptr is user provided.
Ok(unsafe { ptr::read_unaligned(ptr as *const i32) })
}
@ -1525,6 +1556,7 @@ where
let permissions = state.borrow_mut::<FP>();
permissions.check(None)?;
// SAFETY: ptr is user provided.
let result = unsafe { ptr::read_unaligned(ptr as *const u64) };
let big_int: v8::Local<v8::Value> =
@ -1545,6 +1577,7 @@ where
let permissions = state.borrow_mut::<FP>();
permissions.check(None)?;
// SAFETY: ptr is user provided.
Ok(unsafe { ptr::read_unaligned(ptr as *const f32) })
}
@ -1561,6 +1594,7 @@ where
let permissions = state.borrow_mut::<FP>();
permissions.check(None)?;
// SAFETY: ptr is user provided.
Ok(unsafe { ptr::read_unaligned(ptr as *const f64) })
}

20
ext/net/ops_tls.rs
View file

@ -375,11 +375,17 @@ impl TlsStreamInner {
ready!(self.poll_io(cx, Flow::Read))?;
if self.rd_state == State::StreamOpen {
// TODO(bartlomieju):
#[allow(clippy::undocumented_unsafe_blocks)]
let buf_slice =
unsafe { &mut *(buf.unfilled_mut() as *mut [_] as *mut [u8]) };
let bytes_read = self.tls.reader().read(buf_slice)?;
assert_ne!(bytes_read, 0);
unsafe { buf.assume_init(bytes_read) };
// TODO(bartlomieju):
#[allow(clippy::undocumented_unsafe_blocks)]
unsafe {
buf.assume_init(bytes_read)
};
buf.advance(bytes_read);
}
@ -581,10 +587,16 @@ impl Shared {
let self_weak = Arc::downgrade(self);
let self_ptr = self_weak.into_raw() as *const ();
let raw_waker = RawWaker::new(self_ptr, &Self::SHARED_WAKER_VTABLE);
unsafe { Waker::from_raw(raw_waker) }
// TODO(bartlomieju):
#[allow(clippy::undocumented_unsafe_blocks)]
unsafe {
Waker::from_raw(raw_waker)
}
}
fn clone_shared_waker(self_ptr: *const ()) -> RawWaker {
// TODO(bartlomieju):
#[allow(clippy::undocumented_unsafe_blocks)]
let self_weak = unsafe { Weak::from_raw(self_ptr as *const Self) };
let ptr1 = self_weak.clone().into_raw();
let ptr2 = self_weak.into_raw();
@ -598,6 +610,8 @@ impl Shared {
}
fn wake_shared_waker_by_ref(self_ptr: *const ()) {
// TODO(bartlomieju):
#[allow(clippy::undocumented_unsafe_blocks)]
let self_weak = unsafe { Weak::from_raw(self_ptr as *const Self) };
if let Some(self_arc) = Weak::upgrade(&self_weak) {
self_arc.rd_waker.wake();
@ -607,6 +621,8 @@ impl Shared {
}
fn drop_shared_waker(self_ptr: *const ()) {
// TODO(bartlomieju):
#[allow(clippy::undocumented_unsafe_blocks)]
let _ = unsafe { Weak::from_raw(self_ptr as *const Self) };
}

6
ext/webgpu/src/buffer.rs
View file

@ -105,6 +105,8 @@ pub async fn op_webgpu_buffer_get_map_async(
user_data: *mut u8,
) {
let sender_ptr = user_data as *mut oneshot::Sender<Result<(), AnyError>>;
// TODO(bartlomieju):
#[allow(clippy::undocumented_unsafe_blocks)]
let boxed_sender = unsafe { Box::from_raw(sender_ptr) };
boxed_sender
.send(match status {
@ -188,6 +190,8 @@ pub fn op_webgpu_buffer_get_mapped_range(
))
.map_err(|e| DomExceptionOperationError::new(&e.to_string()))?;
// TODO(bartlomieju):
#[allow(clippy::undocumented_unsafe_blocks)]
let slice = unsafe {
std::slice::from_raw_parts_mut(slice_pointer, range_size as usize)
};
@ -225,6 +229,8 @@ pub fn op_webgpu_buffer_unmap(
let size = mapped_resource.1;
if let Some(buffer) = zero_copy {
// TODO(bartlomieju):
#[allow(clippy::undocumented_unsafe_blocks)]
let slice = unsafe { std::slice::from_raw_parts_mut(slice_pointer, size) };
slice.copy_from_slice(&buffer);
}

33
runtime/ops/io.rs
View file

@ -42,26 +42,35 @@ use {
// alive for the duration of the application since the last handle/fd
// being dropped will close the corresponding pipe.
#[cfg(unix)]
static STDIN_HANDLE: Lazy<StdFile> =
Lazy::new(|| unsafe { StdFile::from_raw_fd(0) });
static STDIN_HANDLE: Lazy<StdFile> = Lazy::new(|| {
// SAFETY: corresponds to OS stdin
unsafe { StdFile::from_raw_fd(0) }
});
#[cfg(unix)]
static STDOUT_HANDLE: Lazy<StdFile> =
Lazy::new(|| unsafe { StdFile::from_raw_fd(1) });
static STDOUT_HANDLE: Lazy<StdFile> = Lazy::new(|| {
// SAFETY: corresponds to OS stdout
unsafe { StdFile::from_raw_fd(1) }
});
#[cfg(unix)]
static STDERR_HANDLE: Lazy<StdFile> =
Lazy::new(|| unsafe { StdFile::from_raw_fd(2) });
static STDERR_HANDLE: Lazy<StdFile> = Lazy::new(|| {
// SAFETY: corresponds to OS stderr
unsafe { StdFile::from_raw_fd(2) }
});
#[cfg(windows)]
static STDIN_HANDLE: Lazy<StdFile> = Lazy::new(|| unsafe {
StdFile::from_raw_handle(GetStdHandle(winbase::STD_INPUT_HANDLE))
static STDIN_HANDLE: Lazy<StdFile> = Lazy::new(|| {
// SAFETY: corresponds to OS stdin
unsafe { StdFile::from_raw_handle(GetStdHandle(winbase::STD_INPUT_HANDLE)) }
});
#[cfg(windows)]
static STDOUT_HANDLE: Lazy<StdFile> = Lazy::new(|| unsafe {
StdFile::from_raw_handle(GetStdHandle(winbase::STD_OUTPUT_HANDLE))
static STDOUT_HANDLE: Lazy<StdFile> = Lazy::new(|| {
// SAFETY: corresponds to OS stdout
unsafe { StdFile::from_raw_handle(GetStdHandle(winbase::STD_OUTPUT_HANDLE)) }
});
#[cfg(windows)]
static STDERR_HANDLE: Lazy<StdFile> = Lazy::new(|| unsafe {
StdFile::from_raw_handle(GetStdHandle(winbase::STD_ERROR_HANDLE))
static STDERR_HANDLE: Lazy<StdFile> = Lazy::new(|| {
// SAFETY: corresponds to OS stderr
unsafe { StdFile::from_raw_handle(GetStdHandle(winbase::STD_ERROR_HANDLE)) }
});
pub fn init() -> Extension {

12
runtime/ops/os.rs
View file

@ -248,7 +248,11 @@ fn op_system_memory_info(
fn op_getgid(state: &mut OpState) -> Result<Option<u32>, AnyError> {
super::check_unstable(state, "Deno.getGid");
state.borrow_mut::<Permissions>().env.check_all()?;
unsafe { Ok(Some(libc::getgid())) }
// TODO(bartlomieju):
#[allow(clippy::undocumented_unsafe_blocks)]
unsafe {
Ok(Some(libc::getgid()))
}
}
#[cfg(windows)]
@ -264,7 +268,11 @@ fn op_getgid(state: &mut OpState) -> Result<Option<u32>, AnyError> {
fn op_getuid(state: &mut OpState) -> Result<Option<u32>, AnyError> {
super::check_unstable(state, "Deno.getUid");
state.borrow_mut::<Permissions>().env.check_all()?;
unsafe { Ok(Some(libc::getuid())) }
// TODO(bartlomieju):
#[allow(clippy::undocumented_unsafe_blocks)]
unsafe {
Ok(Some(libc::getuid()))
}
}
#[cfg(windows)]

2
runtime/ops/process.rs
View file

@ -174,6 +174,8 @@ fn op_run(state: &mut OpState, run_args: RunArgs) -> Result<RunInfo, AnyError> {
c.uid(uid);
}
#[cfg(unix)]
// TODO(bartlomieju):
#[allow(clippy::undocumented_unsafe_blocks)]
unsafe {
c.pre_exec(|| {
libc::setgroups(0, std::ptr::null());

2
runtime/ops/spawn.rs
View file

@ -149,6 +149,8 @@ fn create_command(
command.uid(uid);
}
#[cfg(unix)]
// TODO(bartlomieju):
#[allow(clippy::undocumented_unsafe_blocks)]
unsafe {
command.pre_exec(|| {
libc::setgroups(0, std::ptr::null());

6
runtime/ops/tty.rs
View file

@ -172,12 +172,16 @@ fn op_isatty(state: &mut OpState, rid: ResourceId) -> Result<bool, AnyError> {
let handle = get_windows_handle(std_file)?;
let mut test_mode: DWORD = 0;
// If I cannot get mode out of console, it is not a console.
// TODO(bartlomieju):
#[allow(clippy::undocumented_unsafe_blocks)]
Ok(unsafe { consoleapi::GetConsoleMode(handle, &mut test_mode) != FALSE })
}
#[cfg(unix)]
{
use std::os::unix::io::AsRawFd;
let raw_fd = std_file.as_raw_fd();
// TODO(bartlomieju):
#[allow(clippy::undocumented_unsafe_blocks)]
Ok(unsafe { libc::isatty(raw_fd as libc::c_int) == 1 })
}
})?;
@ -225,6 +229,8 @@ fn op_console_size(
use std::os::unix::io::AsRawFd;
let fd = std_file.as_raw_fd();
// TODO(bartlomieju):
#[allow(clippy::undocumented_unsafe_blocks)]
unsafe {
let mut size: libc::winsize = std::mem::zeroed();
if libc::ioctl(fd, libc::TIOCGWINSZ, &mut size as *mut _) != 0 {

2
runtime/permissions.rs
View file

@ -1886,6 +1886,8 @@ fn permission_prompt(message: &str, name: &str) -> bool {
#[cfg(unix)]
fn clear_stdin() -> Result<(), AnyError> {
// TODO(bartlomieju):
#[allow(clippy::undocumented_unsafe_blocks)]
let r = unsafe { libc::tcflush(0, libc::TCIFLUSH) };
assert_eq!(r, 0);
Ok(())

2
serde_v8/examples/basic.rs
View file

@ -52,6 +52,8 @@ fn main() {
println!("x = {}", x);
}
// SAFETY: all isolates have been destroyed, so we can now safely let V8 clean
// up its resources.
unsafe {
v8::V8::dispose();
}

2
serde_v8/magic/rawbytes.rs
View file

@ -87,8 +87,10 @@ mod tests {
#[test]
fn bytes_layout() {
// SAFETY: ensuring layout is the same
let u1: [usize; 4] =
unsafe { mem::transmute(from_static(HELLO.as_bytes())) };
// SAFETY: ensuring layout is the same
let u2: [usize; 4] =
unsafe { mem::transmute(bytes::Bytes::from_static(HELLO.as_bytes())) };
assert_eq!(u1[..3], u2[..3]); // Struct bytes are equal besides Vtables

2
serde_v8/serializable.rs
View file

@ -97,6 +97,8 @@ impl<T: serde::Serialize + 'static> From<T> for SerializablePkg {
fn from(x: T) -> Self {
#[inline(always)]
fn tc<T, U>(src: T) -> U {
// SAFETY: the caller has ensured via the TypeId that the T and U types
// are the same.
let x = unsafe { transmute_copy(&src) };
std::mem::forget(src);
x

1
serde_v8/utils.rs
View file

@ -17,6 +17,7 @@ pub fn v8_init() {
}
pub fn v8_shutdown() {
// SAFETY: this is safe, because all isolates have been shut down already.
unsafe {
v8::V8::dispose();
}

40
test_ffi/src/lib.rs
View file

@ -1,5 +1,7 @@
// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
#![allow(clippy::undocumented_unsafe_blocks)]
use std::os::raw::c_void;
use std::thread::sleep;
use std::time::Duration;
@ -11,23 +13,29 @@ pub extern "C" fn print_something() {
println!("something");
}
#[allow(clippy::not_unsafe_ptr_arg_deref)]
/// # Safety
///
/// The pointer to the buffer must be valid and initalized, and the length must
/// not be longer than the buffer's allocation.
#[no_mangle]
pub extern "C" fn print_buffer(ptr: *const u8, len: usize) {
let buf = unsafe { std::slice::from_raw_parts(ptr, len) };
pub unsafe extern "C" fn print_buffer(ptr: *const u8, len: usize) {
let buf = std::slice::from_raw_parts(ptr, len);
println!("{:?}", buf);
}
#[allow(clippy::not_unsafe_ptr_arg_deref)]
/// # Safety
///
/// The pointer to the buffer must be valid and initalized, and the length must
/// not be longer than the buffer's allocation.
#[no_mangle]
pub extern "C" fn print_buffer2(
pub unsafe extern "C" fn print_buffer2(
ptr1: *const u8,
len1: usize,
ptr2: *const u8,
len2: usize,
) {
let buf1 = unsafe { std::slice::from_raw_parts(ptr1, len1) };
let buf2 = unsafe { std::slice::from_raw_parts(ptr2, len2) };
let buf1 = std::slice::from_raw_parts(ptr1, len1);
let buf2 = std::slice::from_raw_parts(ptr2, len2);
println!("{:?} {:?}", buf1, buf2);
}
@ -87,19 +95,25 @@ pub extern "C" fn sleep_blocking(ms: u64) {
sleep(duration);
}
#[allow(clippy::not_unsafe_ptr_arg_deref)]
/// # Safety
///
/// The pointer to the buffer must be valid and initalized, and the length must
/// not be longer than the buffer's allocation.
#[no_mangle]
pub extern "C" fn fill_buffer(value: u8, buf: *mut u8, len: usize) {
let buf = unsafe { std::slice::from_raw_parts_mut(buf, len) };
pub unsafe extern "C" fn fill_buffer(value: u8, buf: *mut u8, len: usize) {
let buf = std::slice::from_raw_parts_mut(buf, len);
for itm in buf.iter_mut() {
*itm = value;
}
}
#[allow(clippy::not_unsafe_ptr_arg_deref)]
/// # Safety
///
/// The pointer to the buffer must be valid and initalized, and the length must
/// not be longer than the buffer's allocation.
#[no_mangle]
pub extern "C" fn nonblocking_buffer(ptr: *const u8, len: usize) {
let buf = unsafe { std::slice::from_raw_parts(ptr, len) };
pub unsafe extern "C" fn nonblocking_buffer(ptr: *const u8, len: usize) {
let buf = std::slice::from_raw_parts(ptr, len);
assert_eq!(buf, vec![1, 2, 3, 4, 5, 6, 7, 8]);
}

4
tools/lint.js
View file

@ -116,6 +116,10 @@ async function clippy() {
"clippy::all",
"-D",
"clippy::await_holding_refcell_ref",
"-D",
"clippy::missing_safety_doc",
"-D",
"clippy::undocumented_unsafe_blocks",
],
stdout: "inherit",
stderr: "inherit",