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fix(menu): check for timeout duration overflow

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This commit is contained in:
Alex Zenla
2025-10-27 23:10:05 -04:00
parent 5df717de6d
commit 3058abab23
1 changed files with 10 additions and 1 deletions
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11
src/menu.rs
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@@ -40,8 +40,17 @@ fn read(input: &mut Input, timeout: &Duration) -> Result<MenuOperation> {
uefi::boot::create_event_ex(EventType::TIMER, Tpl::CALLBACK, None, None, None) uefi::boot::create_event_ex(EventType::TIMER, Tpl::CALLBACK, None, None, None)
.context("unable to create timer event")? .context("unable to create timer event")?
}; };
// The timeout is in increments of 100 nanoseconds. // The timeout is in increments of 100 nanoseconds.
let trigger = TimerTrigger::Relative(timeout.as_nanos() as u64 / 100); let timeout_hundred_nanos = timeout.as_nanos() / 100;
// Check if the timeout is too large to fit into an u64.
if timeout_hundred_nanos > u64::MAX as u128 {
bail!("timeout duration overflow");
}
// Set a timer to trigger after the specified duration.
let trigger = TimerTrigger::Relative(timeout_hundred_nanos as u64);
uefi::boot::set_timer(&timer_event, trigger).context("unable to set timeout timer")?; uefi::boot::set_timer(&timer_event, trigger).context("unable to set timeout timer")?;
let mut events = vec![timer_event, key_event]; let mut events = vec![timer_event, key_event];