RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-07-26 14:57:34 +00:00
Code Issues Activity Actions

Kernel: PID/TID typing

Browse source 
This compiles, and contains exactly the same bugs as before.
The regex 'FIXME: PID/' should reveal all markers that I left behind, including:
- Incomplete conversion
- Issues or things that look fishy
- Actual bugs that will go wrong during runtime
This commit is contained in:
Ben Wiederhake 2020-08-08 17:32:34 +02:00 • committed by Andreas Kling
parent f225321184
commit f5744a6f2f
26 changed files with 136 additions and 111 deletions
Download patch file Download diff file Expand all files Collapse all files

10
Kernel/Syscalls/waitid.cpp
View file

@ -34,9 +34,12 @@ KResultOr<siginfo_t> Process::do_waitid(idtype_t idtype, int id, int options)
ScopedSpinLock lock(g_processes_lock);
if (idtype == P_PID && !Process::from_pid(id))
return KResult(-ECHILD);
// FIXME: Race: After 'lock' releases, the 'id' process might vanish.
// If that is not a problem, why check for it?
// If it is a problem, let's fix it! (Eventually.)
}
pid_t waitee_pid;
ProcessID waitee_pid { 0 };
// FIXME: WaitBlocker should support idtype/id specs directly.
if (idtype == P_ALL) {
@ -62,14 +65,15 @@ KResultOr<siginfo_t> Process::do_waitid(idtype_t idtype, int id, int options)
if (waitee_process->is_dead()) {
return reap(*waitee_process);
} else {
auto* waitee_thread = Thread::from_tid(waitee_pid);
// FIXME: PID/TID BUG
auto* waitee_thread = Thread::from_tid(waitee_pid.value());
if (!waitee_thread)
return KResult(-ECHILD);
ASSERT((options & WNOHANG) || waitee_thread->state() == Thread::State::Stopped);
siginfo_t siginfo;
memset(&siginfo, 0, sizeof(siginfo));
siginfo.si_signo = SIGCHLD;
siginfo.si_pid = waitee_process->pid();
siginfo.si_pid = waitee_process->pid().value();
siginfo.si_uid = waitee_process->uid();
switch (waitee_thread->state()) {