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Kernel: Add support for SA_SIGINFO

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Bananymous
2025-11-13 04:19:06 +02:00
parent a44c45ff9e
commit dd636ffcb2
13 changed files with 260 additions and 96 deletions
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74
kernel/kernel/Process.cpp
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@@ -313,7 +313,17 @@ namespace Kernel
child.status = __WGENEXITCODE(status, signal);
parent_process->add_pending_signal(SIGCHLD);
parent_process->add_pending_signal(SIGCHLD, {
.si_signo = SIGCHLD,
.si_code = signal ? CLD_KILLED : CLD_EXITED,
.si_errno = 0,
.si_pid = pid(),
.si_uid = m_credentials.ruid(),
.si_addr = nullptr,
.si_status = __WGENEXITCODE(status, signal),
.si_band = 0,
.si_value = {},
});
if (!parent_process->m_threads.empty())
Processor::scheduler().unblock_thread(parent_process->m_threads.front());
@@ -328,7 +338,7 @@ namespace Kernel
LockGuard _(m_process_lock);
for (auto* thread : m_threads)
if (thread != &Thread::current())
thread->add_signal(SIGKILL);
thread->add_signal(SIGKILL, {});
}
while (m_threads.size() > 1)
@@ -1054,7 +1064,17 @@ namespace Kernel
if (current_ns < process->m_alarm_wake_time_ns)
break;
process->add_pending_signal(SIGALRM);
process->add_pending_signal(SIGALRM, {
.si_signo = SIGALRM,
.si_code = SI_TIMER,
.si_errno = 0,
.si_pid = 0,
.si_uid = 0,
.si_addr = nullptr,
.si_status = 0,
.si_band = 0,
.si_value = {},
});
ASSERT(!process->m_threads.empty());
Processor::scheduler().unblock_thread(process->m_threads.front());
@@ -2765,7 +2785,18 @@ namespace Kernel
if (!(m_signal_handlers[SIGCHLD].sa_flags & SA_NOCLDSTOP))
{
parent->add_pending_signal(SIGCHLD);
parent->add_pending_signal(SIGCHLD, {
.si_signo = SIGCHLD,
.si_code = stopped ? CLD_STOPPED : CLD_CONTINUED,
.si_errno = 0,
.si_pid = pid(),
.si_uid = m_credentials.ruid(),
.si_addr = nullptr,
.si_status = __WGENEXITCODE(0, signal),
.si_band = 0,
.si_value = { .sival_int = 0 },
});
if (!parent->m_threads.empty())
Processor::scheduler().unblock_thread(parent->m_threads.front());
}
@@ -2791,7 +2822,7 @@ namespace Kernel
}
}
BAN::ErrorOr<void> Process::kill(pid_t pid, int signal)
BAN::ErrorOr<void> Process::kill(pid_t pid, int signal, const siginfo_t& signal_info)
{
if (pid == 0 || pid == -1)
return BAN::Error::from_errno(ENOTSUP);
@@ -2815,7 +2846,7 @@ namespace Kernel
process.set_stopped(false, signal);
else
{
process.add_pending_signal(signal);
process.add_pending_signal(signal, signal_info);
if (!process.m_threads.empty())
Processor::scheduler().unblock_thread(process.m_threads.front());
process.m_stop_blocker.unblock();
@@ -2837,6 +2868,18 @@ namespace Kernel
if (signal != 0 && (signal < _SIGMIN || signal > _SIGMAX))
return BAN::Error::from_errno(EINVAL);
const siginfo_t signal_info {
.si_signo = signal,
.si_code = SI_USER,
.si_errno = 0,
.si_pid = this->pid(),
.si_uid = m_credentials.ruid(),
.si_addr = nullptr,
.si_status = 0,
.si_band = 0,
.si_value = {},
};
if (pid == m_pid)
{
if (signal == 0)
@@ -2847,13 +2890,13 @@ namespace Kernel
set_stopped(false, signal);
else
{
add_pending_signal(signal);
add_pending_signal(signal, signal_info);
m_stop_blocker.unblock();
}
return 0;
}
TRY(kill(pid, signal));
TRY(kill(pid, signal, signal_info));
return 0;
}
@@ -3196,8 +3239,19 @@ namespace Kernel
{
if (thread->tid() != tid)
continue;
if (signal != 0)
thread->add_signal(signal);
if (signal == 0)
return 0;
thread->add_signal(signal, {
.si_signo = signal,
.si_code = SI_USER,
.si_errno = 0,
.si_pid = pid(),
.si_uid = m_credentials.ruid(),
.si_addr = nullptr,
.si_status = 0,
.si_band = 0,
.si_value = {},
});
return 0;
}