Files
firezone/rust
Reactor Scram a10d76c525 chore(linux): revert /etc/resolv.conf on exit if we changed it to control DNS (#4148)
This isn't really user-facing, so I marked it down from `feat` to
`chore`. Closes #3817

- If we exit gracefully, `/etc/resolv.conf` is reverted
- We always keep the `.before-firezone` backup in case we lose power and
the revert transaction is corrupted or rolled back
- We use a magic header to detect whether the last run was a crash or
not. If Firezone crashes and the user wants to modify their default DNS,
they need to delete that header so that Firezone won't accidentally
revert its backup and trash their change.
- All error variants for this module replaced with `anyhow::Error` since
they were never matched by callers.

I ran `cargo mutants` locally and it helped me validate the unit tests
and it picked up a `match` branch that I forgot to delete.

```[tasklist]
- [x] (Failed: Integration tests didn't like it) ~~Add the system default resolvers below Firezone's sentinels~~
- [x] `tracing::info` "Last run crashed" if we have to revert the file at startup
```

---------

Signed-off-by: Reactor Scram <ReactorScram@users.noreply.github.com>
2024-03-18 16:29:25 +00:00
..
2023-05-10 07:58:32 -07:00

Rust development guide

Firezone uses Rust for all data plane components. This directory contains the Linux and Windows clients, and low-level networking implementations related to STUN/TURN.

We target the last stable release of Rust using rust-toolchain.toml. If you are using rustup, that is automatically handled for you. Otherwise, ensure you have the latest stable version of Rust installed.