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signal: add signal_returnmask and other fixes

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Matheus
2024-09-12 22:08:57 -03:00
parent cf3e58ffe1
commit 31c7cf881c
6 changed files with 15 additions and 12 deletions
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kernel-src/sys/signal.c
+9 -5
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@@ -139,13 +139,17 @@ void signal_pending(struct thread_t *thread, sigset_t *sigset) {
PROCESS_LEAVE(proc);
}
void signal_returnmask(struct thread_t *thread, sigset_t *sigset) {
memcpy(&thread->signals.returnmask, sigset, sizeof(sigset_t));
thread->signals.hasreturnmask = true;
}
void signal_suspend(sigset_t *sigset) {
thread_t *thread = _cpu()->thread;
THREAD_ENTER(thread);
memcpy(&thread->signals.oldmask, &thread->signals.mask, sizeof(sigset_t));
memcpy(&thread->signals.mask, sigset, sizeof(sigset_t));
thread->signals.suspending = true;
signal_returnmask(thread, sigset);
THREAD_LEAVE(thread);
@@ -548,11 +552,11 @@ bool signal_check(struct thread_t *thread, context_t *context, bool syscall, uin
memset(&sigframe.oldstack, 0, sizeof(stack_t));
}
if (thread->signals.suspending) {
if (thread->signals.hasreturnmask) {
// if we were waiting in signal_suspend, push the old mask into the return frame
// of the first signal and set it to not act this way the next check
memcpy(&sigframe.oldmask, &thread->signals.oldmask, sizeof(sigset_t));
thread->signals.suspending = false;
memcpy(&sigframe.oldmask, &thread->signals.returnmask, sizeof(sigset_t));
thread->signals.hasreturnmask = false;
} else {
// else, just push the current mask
memcpy(&sigframe.oldmask, &thread->signals.mask, sizeof(sigset_t));