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add support of RustyHermit's BSD socket layer
RustyHermit is a tier 3 platform and publishes a new kernel interface. The new version supports a common BSD socket layer. By supporting this interface, the implementation of `std` can be harmonized to other operating systems. In `sys_common/mod.rs` we remove only a special case for RustyHermit. All changes are done in the RustyHermit specific directories.
To realize this socket layer, the handling of file descriptors is also harmonized to other operating systems.
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Move some std tests from `tests/ui-fulldeps` into `library/std`
This allows them to be tested normally along with other `./x test std` tests. Moving `rename_directory` is simple enough but `create_dir_all_bare` needed to be an std integration test.
Additionally, some tests that I couldn't move atm have instead been placed in an `std` subdirectory. These tests include ones that do fun things with processes or that intentionally abort the test process.
r? libs
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By moving the IO traits, the RustyHermit support is harmonized to
of other operating systems.
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RustHermit publishs a new kernel interface and supports
a common BSD socket layer. By supporting this interface,
the implementation can be harmonized to other operating systems.
To realize this socket layer, the handling of file descriptors
is also harmonized to other operating systems.
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r=ChrisDenton
Fix `is_terminal`'s handling of long paths on Windows.
As reported in sunfishcode/is-terminal#18, there are situations where `GetFileInformationByHandleEx` can write a file name length that is longer than the provided buffer. To avoid deferencing memory past the end of the buffer, use a bounds-checked function to form a slice to the buffer and handle the out-of-bounds case.
This ports the fix from sunfishcode/is-terminal#19 to std's `is_terminal` implementation.
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std: time: Avoid to use "was created" in elapsed() description
".. since this instant was created" is inaccurate and misleading, consider the following case:
```rust
let i1 = Instant::now(); // i1 is created at T1
let i2 = i1 + Duration::from_nanos(0); // i2 is "created" at T2
i2.elapsed(); // at T3
```
Per the current description, `elapsed()` at T3 should return T3 - T2?
To avoid the inaccuracy, removes the "was created" in the description of {Instant,SystemTime}::elapsed().
And since these types represent times, it's OK to use prepostions with them, e.g. "since this instant".
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As reported in sunfishcode/is-terminal#18, there are situations where
`GetFileInformationByHandleEx` can write a file name length that is
longer than the provided buffer. To avoid deferencing memory past the
end of the buffer, use a bounds-checked function to form a slice to
the buffer and handle the out-of-bounds case.
This ports the fix from sunfishcode/is-terminal#19 to std's `is_terminal`
implementation.
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Windows: Quote more batch file arguments
Make sure to always quote batch file arguments that contain command prompt special characters.
Additionally add `/d` command line parameter to disable any autorun scripts that may change the way variable expansion works. This makes it more consistent across systems and may help avoid surprises.
## Background Info
[`CreateProcess`](https://learn.microsoft.com/en-us/windows/win32/api/processthreadsapi/nf-processthreadsapi-createprocessw) with the `lpApplicationName` set can only be used to run `.exe` files and not script files such as `.bat`. However, for historical reasons, we do have special handling so that `.bat` files will be correctly run with `cmd.exe` as the application.
In Windows, command line arguments are passed as a single string (not an array). Applications can parse this string however they like but most follow the standard MSVC C/C++ convention. But `cmd.exe` uses different argument parsing rules to other Windows programs (because it emulates old DOS). This PR aims to help smooth over some of the differences.
r? libs
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".. since this instant was created" is inaccurate and misleading,
consider the following case:
let i1 = Instant::now(); // i1 is created at T1
let i2 = i1 + Duration::from_nanos(0); // i2 is "created" at T2
i2.elapsed(); // at T3
Per the current description, `elapsed()` at T3 should return T3 - T2?
Therefore removes the "was created" in the description of
{Instant,SystemTime}::elapsed(). And since these types represent times,
it's OK to use prepostions with them, e.g. "since this instant".
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Rename atomic 'as_mut_ptr' to 'as_ptr' to match Cell (ref #66893)
Originally discussed in https://github.com/rust-lang/rust/issues/66893#issuecomment-1419198623
~~This uses #107706 as a base to avoid a merge conflict once that gets rolled up (so disregard const changes in the diff until it does)~~ all merged & rebased
`@rustbot` label +T-libs-api
r? m-ou-se
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Make sure to quote batch file arguments that contain command prompt special characters.
Additionally add `/d` command line parameter to disable any commands that may change the way variable expansion works.
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And emscripten too.
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Moving `create_dir_all` out of `ui-fulldeps` is complicated by the fact it sets the current directory. This means it can't be a unit test. Instead, move it to its own integration test.
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std has had a `TempDir` implementation for a long time now.
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docs: wrong naming convention in struct keyword doc
Noticed that the naming convention mentioned is not the right one.
As far as I know, PacalCase is the naming convention used for structs names. PacalCase is not the same as camelCase
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Explain the default panic hook better
This changes the documentation of `std::panic::set_hook` and `take_hook` to explain how the default panic hook works. In particular the fact that `take_hook` registers the default hook, rather than no hook at all, was missing from the docs.
I also reworded a few things for clarity.
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This changes the documentation of `std::panic::set_hook` and `take_hook` to better explain how the default panic hook works. In particular the fact that `take_hook` registers the default hook, rather than no hook at all, was missing from the docs.
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This allows loading some essential functions (e.g. read/write file) at load time instead of lazily.
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This allows to skip an unnecessary buffer initialization.
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reflow the stack size story
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Optimize `LazyLock` size
The initialization function was unnecessarily stored separately from the data to be initialized. Since both cannot exist at the same time, a `union` can be used, with the `Once` acting as discriminant. This unfortunately requires some extra methods on `Once` so that `Drop` can be implemented correctly and efficiently.
`@rustbot` label +T-libs +A-atomic
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Implement the Windows counterpart to #97437 and #107317: Implement
`AsHandle` and `AsSocket` for `Arc<T>`, `Rc<T>`, and `Box<T>`.
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Tests that messages are immediately dropped once the last receiver is destroyed.
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Use id-based thread parking on SOLID
By using the [`slp_tsk`/`wup_tsk`](https://cs.uwaterloo.ca/~brecht/courses/702/Possible-Readings/embedded/uITRON-4.0-specification.pdf) system functions instead of an event-flag structure, `Parker` becomes cheaper to construct and SOLID can share the implementation used by NetBSD and SGX.
ping ``@kawadakk``
r? ``@m-ou-se``
``@rustbot`` label +T-libs
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Co-authored-by: gh-tr <troach@qnx.com>
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Revert to using `RtlGenRandom` as a fallback
This is required due to `BCryptGenRandom` failing to load a dll it depends on.
Fixes #108059
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This is required due to `BCryptGenRandom` failing to load the necessary dll on some systems.
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Update the minimum external LLVM to 14
With this change, we'll have stable support for LLVM 14 through 16 (pending release).
For reference, the previous increase to LLVM 13 was #100460.
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Added another error to be processed in fallback
This pull request addresses the problem of Rust not being able to read file/directory metadata because the current user doesn't have permission to read the file and are thus inaccessible.
One particular example is `System Volume Information`. But any example can be made by having a file/directory, which the current user can't access even though the system does allow to view the metadata, which is handled by the fallback.
The fallback exists to get the metadata but it was limited to one error type. Having added ERROR_ACCESS_DENIED per Chris Denton's suggestion, file/directory properties are now properly read.
Solution suggested by Chris Denton https://github.com/nushell/nushell/issues/6857#issuecomment-1426847135
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Added another error to be processed in fallback
Solution suggested by Chris Denton https://github.com/nushell/nushell/issues/6857#issuecomment-1426847135
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This symbol should be provided by Hermit.
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Use associated items of `char` instead of freestanding items in `core::char`
The associated functions and constants on `char` have been stable since 1.52 and the freestanding items have soft-deprecated since 1.62 (https://github.com/rust-lang/rust/pull/95566). This PR ~~marks them as "deprecated in future", similar to the integer and floating point modules (`core::{i32, f32}` etc)~~ replaces all uses of `core::char::*` with `char::*` to prepare for future deprecation of `core::char::*`.
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