From 24a60c5a1083b29dbb377f617cf14f451602a422 Mon Sep 17 00:00:00 2001
From: Idan Horowitz <idan.horowitz@gmail.com>
Date: Sat, 16 Dec 2023 13:30:31 +0200
Subject: [PATCH] Kernel: Mark sys$ioctl as not needing the big process lock

This syscall does not access any big process lock protected resources.
---
 Kernel/API/Syscall.h      | 2 +-
 Kernel/Syscalls/ioctl.cpp | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/Kernel/API/Syscall.h b/Kernel/API/Syscall.h
index 223a816c91..c448a0be91 100644
--- a/Kernel/API/Syscall.h
+++ b/Kernel/API/Syscall.h
@@ -113,7 +113,7 @@ enum class NeedsBigProcessLock {
     S(getuid, NeedsBigProcessLock::No)                     \
     S(inode_watcher_add_watch, NeedsBigProcessLock::No)    \
     S(inode_watcher_remove_watch, NeedsBigProcessLock::No) \
-    S(ioctl, NeedsBigProcessLock::Yes)                     \
+    S(ioctl, NeedsBigProcessLock::No)                      \
     S(join_thread, NeedsBigProcessLock::No)                \
     S(jail_create, NeedsBigProcessLock::No)                \
     S(jail_attach, NeedsBigProcessLock::No)                \
diff --git a/Kernel/Syscalls/ioctl.cpp b/Kernel/Syscalls/ioctl.cpp
index bc258ae919..b793cff364 100644
--- a/Kernel/Syscalls/ioctl.cpp
+++ b/Kernel/Syscalls/ioctl.cpp
@@ -13,7 +13,7 @@ namespace Kernel {
 
 ErrorOr<FlatPtr> Process::sys$ioctl(int fd, unsigned request, FlatPtr arg)
 {
-    VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this);
+    VERIFY_NO_PROCESS_BIG_LOCK(this);
     auto description = TRY(open_file_description(fd));
     if (request == FIONBIO) {
         description->set_blocking(TRY(copy_typed_from_user(Userspace<int const*>(arg))) == 0);