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Kernel: Move process parent PID into protected data :^)

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This commit is contained in:
Andreas Kling 2021-03-10 20:09:49 +01:00
parent d677a73b0e
commit 3d27269f13
Notes: sideshowbarker 2024-07-18 21:32:48 +09:00 
Author: https://github.com/awesomekling
Commit: https://github.com/SerenityOS/serenity/commit/3d27269f133
4 changed files with 6 additions and 6 deletions
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4
Kernel/Process.cpp
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@ -238,7 +238,6 @@ Process::Process(RefPtr<Thread>& first_thread, const String& name, uid_t uid, gi
, m_executable(move(executable))
, m_cwd(move(cwd))
, m_tty(tty)
, m_ppid(ppid)
, m_wait_block_condition(*this)
{
m_protected_data = KBuffer::try_create_with_size(sizeof(ProtectedData));
@ -247,6 +246,7 @@ Process::Process(RefPtr<Thread>& first_thread, const String& name, uid_t uid, gi
{
MutableProtectedData protected_data { *this };
protected_data->pid = allocate_pid();
protected_data->ppid = ppid;
protected_data->uid = uid;
protected_data->gid = gid;
protected_data->euid = uid;
@ -518,7 +518,7 @@ void Process::finalize()
{
// FIXME: PID/TID BUG
if (auto parent_thread = Thread::from_tid(m_ppid.value())) {
if (auto parent_thread = Thread::from_tid(ppid().value())) {
if (!(parent_thread->m_signal_action_data[SIGCHLD].flags & SA_NOCLDWAIT))
parent_thread->send_signal(SIGCHLD, this);
}

4
Kernel/Process.h
View file

@ -114,6 +114,7 @@ class Process
struct ProtectedData {
ProcessID pid { 0 };
ProcessID ppid { 0 };
SessionID sid { 0 };
uid_t euid { 0 };
gid_t egid { 0 };
@ -209,7 +210,7 @@ public:
gid_t gid() const { return protected_data().gid; }
uid_t suid() const { return protected_data().suid; }
gid_t sgid() const { return protected_data().sgid; }
ProcessID ppid() const { return m_ppid; }
ProcessID ppid() const { return protected_data().ppid; }
bool is_dumpable() const { return m_dumpable; }
void set_dumpable(bool dumpable) { m_dumpable = dumpable; }
@ -587,7 +588,6 @@ private:
RefPtr<TTY> m_tty;
ProcessID m_ppid { 0 };
mode_t m_umask { 022 };
bool m_dumpable { true };

2
Kernel/Syscalls/disown.cpp
View file

@ -36,7 +36,7 @@ KResultOr<int> Process::sys$disown(ProcessID pid)
return ESRCH;
if (process->ppid() != this->pid())
return ECHILD;
process->m_ppid = 0;
MutableProtectedData(*this)->ppid = 0;
process->disowned_by_waiter(*this);
return 0;
}

2
Kernel/Syscalls/process.cpp
View file

@ -38,7 +38,7 @@ KResultOr<pid_t> Process::sys$getpid()
KResultOr<pid_t> Process::sys$getppid()
{
REQUIRE_PROMISE(stdio);
return m_ppid.value();
return protected_data().ppid.value();
}
KResultOr<int> Process::sys$get_process_name(Userspace<char*> buffer, size_t buffer_size)