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mind-body: the window probe also opens the staged file, the wider window

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Under umask 000 with the binary's umask removed the first probe never hit.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Meta Vens 2026-10-09 16:43:00 +02:00
commit 1c2964b6ad
1 changed files with 12 additions and 4 deletions
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16
crates/mind-body/tests/control.rs
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@ -365,9 +365,17 @@ mod modes {
let stop = std::env::var("MIND_BODY_STOP").unwrap();
let started = std::time::Instant::now();
while !Path::new(&stop).exists() && started.elapsed() < Duration::from_secs(120) {
for _ in 0..2000 {
if std::fs::OpenOptions::new().write(true).open(&path).is_ok() {
std::process::exit(3);
// The live store, and anything else in its directory (the staged
// file CultCache writes before its rename is the wider window).
for _ in 0..200 {
let mut targets = vec![path.clone()];
if let Ok(entries) = std::fs::read_dir(path.parent().unwrap()) {
targets.extend(entries.flatten().map(|entry| entry.path()));
}
for target in targets {
if std::fs::OpenOptions::new().write(true).open(&target).is_ok() {
std::process::exit(3);
}
}
}
}
@ -555,7 +563,7 @@ mod unsafe_installs {
.spawn()
.unwrap();
let bin = env!("CARGO_BIN_EXE_mind-control");
for round in 0..60 {
for round in 0..100 {
let verb = if round % 2 == 0 { "release" } else { "hold" };
let status = Command::new("sh")
.args(["-c", "umask 000; exec \"$@\"", "sh", bin, "--instance", &instance, "brake", verb])