Files
llmx/codex-rs/core/src/landlock.rs
Michael Bolin 8595237505 fix: ensure cwd for conversation and sandbox are separate concerns (#3874)
Previous to this PR, both of these functions take a single `cwd`:


71038381aa/codex-rs/core/src/seatbelt.rs (L19-L25)


71038381aa/codex-rs/core/src/landlock.rs (L16-L23)

whereas `cwd` and `sandbox_cwd` should be set independently (fixed in
this PR).

Added `sandbox_distinguishes_command_and_policy_cwds()` to
`codex-rs/exec/tests/suite/sandbox.rs` to verify this.
2025-09-18 14:37:06 -07:00

71 lines
2.1 KiB
Rust

use crate::protocol::SandboxPolicy;
use crate::spawn::StdioPolicy;
use crate::spawn::spawn_child_async;
use std::collections::HashMap;
use std::path::Path;
use std::path::PathBuf;
use tokio::process::Child;
/// Spawn a shell tool command under the Linux Landlock+seccomp sandbox helper
/// (codex-linux-sandbox).
///
/// Unlike macOS Seatbelt where we directly embed the policy text, the Linux
/// helper accepts a list of `--sandbox-permission`/`-s` flags mirroring the
/// public CLI. We convert the internal [`SandboxPolicy`] representation into
/// the equivalent CLI options.
pub async fn spawn_command_under_linux_sandbox<P>(
codex_linux_sandbox_exe: P,
command: Vec<String>,
command_cwd: PathBuf,
sandbox_policy: &SandboxPolicy,
sandbox_policy_cwd: &Path,
stdio_policy: StdioPolicy,
env: HashMap<String, String>,
) -> std::io::Result<Child>
where
P: AsRef<Path>,
{
let args = create_linux_sandbox_command_args(command, sandbox_policy, sandbox_policy_cwd);
let arg0 = Some("codex-linux-sandbox");
spawn_child_async(
codex_linux_sandbox_exe.as_ref().to_path_buf(),
args,
arg0,
command_cwd,
sandbox_policy,
stdio_policy,
env,
)
.await
}
/// Converts the sandbox policy into the CLI invocation for `codex-linux-sandbox`.
fn create_linux_sandbox_command_args(
command: Vec<String>,
sandbox_policy: &SandboxPolicy,
sandbox_policy_cwd: &Path,
) -> Vec<String> {
#[expect(clippy::expect_used)]
let sandbox_policy_cwd = sandbox_policy_cwd
.to_str()
.expect("cwd must be valid UTF-8")
.to_string();
#[expect(clippy::expect_used)]
let sandbox_policy_json =
serde_json::to_string(sandbox_policy).expect("Failed to serialize SandboxPolicy to JSON");
let mut linux_cmd: Vec<String> = vec![
sandbox_policy_cwd,
sandbox_policy_json,
// Separator so that command arguments starting with `-` are not parsed as
// options of the helper itself.
"--".to_string(),
];
// Append the original tool command.
linux_cmd.extend(command);
linux_cmd
}