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Kernel/LibC: Implement sigsuspend

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Bananymous
2025-08-20 20:14:54 +03:00
parent 49122cf729
commit 247743ef9c
6 changed files with 38 additions and 0 deletions
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14
kernel/kernel/Process.cpp
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@@ -2651,6 +2651,20 @@ namespace Kernel
return 0;
}
BAN::ErrorOr<long> Process::sys_sigsuspend(const sigset_t* set)
{
LockGuard _(m_process_lock);
TRY(validate_pointer_access(set, sizeof(sigset_t), false));
auto& thread = Thread::current();
thread.set_suspend_signal_mask(*set & ~(SIGKILL | SIGSTOP));
while (!thread.is_interrupted_by_signal())
Processor::scheduler().block_current_thread(nullptr, -1, &m_process_lock);
return BAN::Error::from_errno(EINTR);
}
BAN::ErrorOr<long> Process::sys_futex(int op, const uint32_t* addr, uint32_t val, const timespec* abstime)
{
const vaddr_t vaddr = reinterpret_cast<vaddr_t>(addr);

14
kernel/kernel/Thread.cpp
View File

@@ -547,6 +547,12 @@ namespace Kernel
m_signal_pending_mask &= ~(1ull << signal);
process().remove_pending_signal(signal);
if (m_signal_suspend_mask.has_value())
{
m_signal_block_mask = m_signal_suspend_mask.value();
m_signal_suspend_mask.clear();
}
if (signal_handler == (vaddr_t)SIG_IGN)
;
else if (signal_handler != (vaddr_t)SIG_DFL)
@@ -643,6 +649,14 @@ namespace Kernel
Processor::scheduler().unblock_thread(this);
}
void Thread::set_suspend_signal_mask(uint64_t sigmask)
{
SpinLockGuard _(m_signal_lock);
ASSERT(!m_signal_suspend_mask.has_value());
m_signal_suspend_mask = m_signal_block_mask;
m_signal_block_mask = sigmask;
}
BAN::ErrorOr<void> Thread::sleep_or_eintr_ns(uint64_t ns)
{
if (is_interrupted_by_signal())