From 941797c807312e8ec3f667fb3662a0995050257b Mon Sep 17 00:00:00 2001
From: Undefine <undefine@undefine.pl>
Date: Tue, 30 Dec 2025 00:04:13 +0100
Subject: [PATCH] LibCore: Implement FileWatcher for any systems with inotify

FreeBSD 15 added support for inotify so let's just allow this file to
be used there too as it's needed for watching the time zone file.
---
 Libraries/LibCore/CMakeLists.txt                 | 16 +++++++++++-----
 ...leWatcherLinux.cpp => FileWatcherInotify.cpp} |  4 ----
 2 files changed, 11 insertions(+), 9 deletions(-)
 rename Libraries/LibCore/{FileWatcherLinux.cpp => FileWatcherInotify.cpp} (98%)

diff --git a/Libraries/LibCore/CMakeLists.txt b/Libraries/LibCore/CMakeLists.txt
index 0ba2a5a721..8ede062c1f 100644
--- a/Libraries/LibCore/CMakeLists.txt
+++ b/Libraries/LibCore/CMakeLists.txt
@@ -80,28 +80,34 @@ else()
     list(APPEND SOURCES LocalServerWindows.cpp)
 endif()
 
-# FIXME: Implement these for other systems.
+include(CheckIncludeFile)
+
+check_include_file(sys/inotify.h HAVE_INOTIFY)
+
+if (HAVE_INOTIFY)
+    list(APPEND SOURCES FileWatcherInotify.cpp)
+else()
+    list(APPEND SOURCES FileWatcherUnimplemented.cpp)
+endif()
+
+# FIXME: Implement ProcessStatistics for Windows and *BSD
 if (LINUX)
     list(APPEND SOURCES
-        FileWatcherLinux.cpp
         Platform/ProcessStatisticsLinux.cpp
         TimeZoneWatcherLinux.cpp
     )
 elseif (APPLE AND NOT IOS)
     list(APPEND SOURCES
-        FileWatcherUnimplemented.cpp
         Platform/ProcessStatisticsMach.cpp
         TimeZoneWatcherMacOS.mm
     )
 elseif (WIN32)
     list(APPEND SOURCES
-        FileWatcherUnimplemented.cpp
         Platform/ProcessStatisticsUnimplemented.cpp
         TimeZoneWatcherWindows.cpp
     )
 else()
     list(APPEND SOURCES
-        FileWatcherUnimplemented.cpp
         Platform/ProcessStatisticsUnimplemented.cpp
         TimeZoneWatcherUnimplemented.cpp
     )
diff --git a/Libraries/LibCore/FileWatcherLinux.cpp b/Libraries/LibCore/FileWatcherInotify.cpp
similarity index 98%
rename from Libraries/LibCore/FileWatcherLinux.cpp
rename to Libraries/LibCore/FileWatcherInotify.cpp
index 923c2ce07e..2f0cb555b5 100644
--- a/Libraries/LibCore/FileWatcherLinux.cpp
+++ b/Libraries/LibCore/FileWatcherInotify.cpp
@@ -16,10 +16,6 @@
 #include <sys/ioctl.h>
 #include <unistd.h>
 
-#if !defined(AK_OS_LINUX)
-static_assert(false, "This file must only be used for Linux");
-#endif
-
 namespace Core {
 
 static constexpr unsigned file_watcher_flags_to_inotify_flags(FileWatcherFlags flags)