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# mach2
[![Latest Version]][crates.io] [![docs]][docs.rs]
A Rust interface to the **user-space** API of the Mach 3.0 kernel exposed in
`/usr/include/mach` that underlies macOS and is linked via `libSystem` (and
`libsystem_kernel`).
This library does not expose the **kernel-space** API of the Mach 3.0 kernel
exposed in
`SDK/System/Library/Frameworks/Kernel.framework/Versions/A/Headers/mach`.
That is, if you are writing a kernel-resident device drivers or some other
kernel extensions you have to use something else. The user-space kernel API is
often API-incompatible with the kernel space one, and even in the cases where
they match, they are sometimes ABI incompatible such that using this library
would have **undefined behavior**.
## Usage
Add the following to your `Cargo.toml` to conditionally include mach on those
platforms that support it.
```toml
[target.'cfg(any(target_os = "macos", target_os = "ios"))'.dependencies.mach]
version = "0.4"
```
Available crate feature:
* **unstable** (disabled by default): Exposes newly changed APIs. Enabling this may
bring breaking changes (see the breaking change policy).
### Breaking change policy
We do the following steps when an item is changed/removed on latest toolchain:
1. Deprecate an existing one
2. Declare a new one under the `unstable` feature
3. After a month or more since releasing a new version that contains that change,
remove/change an older one
For instance, if const `FOO` value is changed from `3` to `4`,
we expose the newer one, i.e. `4`, under `unstable` first.
So the `unstable` users should notice the change on the first release since deprecating.
After a month or more, all the users should notice it.
## Platform support
The following table describes the current CI set-up:
| Target | Min. Rust | XCode | build | ctest | run |
|-------------------------|-----------|-----------------|-------|-------|-----|
| `x86_64-apple-darwin` | 1.33.0 | 10.3.0 - 13.1.0 | ✓ | ✓ | ✓ |
| `aarch64-apple-darwin` | nightly | 13.1.0 | ✓ | - | - |
| `aarch64-apple-ios` | nightly | 13.1.0 | ✓ | - | - |
| `aarch64-apple-ios-sim` | nightly | 13.1.0 | ✓ | - | - |
| `x86_64-apple-ios` | nightly | 13.1.0 | ✓ | - | - |
## License
This project is licensed under either of
* A 2-clause BSD License ([LICENSE-BSD](LICENSE-BSD)), or
* Apache License, Version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or
http://www.apache.org/licenses/LICENSE-2.0)
* MIT license ([LICENSE-MIT](LICENSE-MIT) or
http://opensource.org/licenses/MIT)
at your option.
## Contribution
Unless you explicitly state otherwise, any contribution intentionally submitted
for inclusion in `mach` by you, as defined in the Apache-2.0 license, shall be
triple licensed as above, without any additional terms or conditions.
To locally test the library, run:
```
TARGET=x86_64-apple-darwin RUST_VERSION=nightly ./ci/run.sh
```
where you can replace the `TARGET` and `RUST_VERSION` with the target you
want to test (e.g. `aarch64-apple-darwin`) and the Rust version you want to use for
the tests (e.g. `stable`, `1.33.0`, etc.).
[crates.io]: https://crates.io/crates/mach2
[Latest Version]: https://img.shields.io/crates/v/mach2.svg
[docs]: https://docs.rs/mach2/badge.svg
[docs.rs]: https://docs.rs/mach2
|
