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Implement sigaction(2) SA_RESETHAND.

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This commit is contained in:
Jonas 'Sortie' Termansen 2015-08-19 14:54:19 +02:00
parent a90151e508
commit ab27c85948
1 changed files with 10 additions and 5 deletions
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15
kernel/signal.cpp
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@ -767,11 +767,16 @@ retry_another_signal:
// Update the current registers.
Scheduler::LoadInterruptedContext(intctx, &handler_regs);
// TODO: SA_RESETHAND:
// "If set, the disposition of the signal shall be reset to SIG_DFL
// and the SA_SIGINFO flag shall be cleared on entry to the signal
// handler. Note: SIGILL and SIGTRAP cannot be automatically reset
// when delivered; the system silently enforces this restriction."
// Reset the signal handler if this signal handler is once only.
if ( action->sa_flags & SA_RESETHAND )
{
// POSIX mandates SA_RESETHAND is silently ignored for these signals.
if ( signum != SIGILL && signum != SIGTRAP )
{
action->sa_flags &= ~SA_RESETHAND;
action->sa_handler = SIG_DFL;
}
}
// Run the signal handler by returning to user-space.
return;