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Kernel: Move signal handlers from being thread state to process state

POSIX requires that sigaction() and friends set a _process-wide_ signal
handler, so move signal handlers and flags inside Process.
This also fixes a "pid/tid confusion" FIXME, as we can now send the
signal to the process and let that decide which thread should get the
signal (which is the thread with tid==pid, but that's now the Process's
problem).
Note that each thread still retains its signal mask, as that is local to
each thread.
This commit is contained in:
Ali Mohammad Pur 2022-02-24 22:25:49 +03:30 committed by Andreas Kling
parent 18b9d02edd
commit cf63447044
5 changed files with 19 additions and 19 deletions

View file

@ -827,6 +827,12 @@ private:
NonnullRefPtrVector<Thread> m_threads_for_coredump;
mutable RefPtr<ProcessProcFSTraits> m_procfs_traits;
struct SignalActionData {
VirtualAddress handler_or_sigaction;
int flags { 0 };
u32 mask { 0 };
};
Array<SignalActionData, NSIG> m_signal_action_data;
static_assert(sizeof(ProtectedValues) < (PAGE_SIZE));
alignas(4096) ProtectedValues m_protected_values;