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Check the length of timers before access

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Marsman1996 2024-08-21 13:51:43 +08:00 committed by Tate, Hongliang Tian
parent 2102107be1
commit c38907374a
1 changed files with 6 additions and 1 deletions
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7
kernel/aster-nix/src/process/process/timer_manager.rs
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@ -187,7 +187,12 @@ impl PosixTimerManager {
/// Finds a POSIX timer by the input `timer_id`. /// Finds a POSIX timer by the input `timer_id`.
pub fn find_posix_timer(&self, timer_id: usize) -> Option<Arc<Timer>> { pub fn find_posix_timer(&self, timer_id: usize) -> Option<Arc<Timer>> {
self.posix_timers.lock()[timer_id].clone() let timers = self.posix_timers.lock();
if timer_id < timers.len() {
timers[timer_id].clone()
} else {
None
}
} }
/// Removes the POSIX timer with the ID `timer_id`. /// Removes the POSIX timer with the ID `timer_id`.