Merge pull request #4408 from lfos/fix-hyprland-ipc-destructor

Prevent child zombie process from tearing down Hyprland IPC

include/modules/hyprland/backend.hpp

@@ -42,6 +42,7 @@ class IPC {
   util::JsonParser parser_;
   std::list<std::pair<std::string, EventHandler*>> callbacks_;
   int socketfd_;  // the hyprland socket file descriptor
+  pid_t socketOwnerPid_;
   bool running_ = true;
 };
 

src/modules/hyprland/backend.cpp

@@ -46,9 +46,14 @@ std::filesystem::path IPC::getSocketFolder(const char* instanceSig) {
 IPC::IPC() {
   // will start IPC and relay events to parseIPC
   ipcThread_ = std::thread([this]() { socketListener(); });
+  socketOwnerPid_ = getpid();
 }
 
 IPC::~IPC() {
+  // Do no stop Hyprland IPC if a child process (with successful fork() but
+  // failed exec()) exits.
+  if (getpid() != socketOwnerPid_) return;
+
   running_ = false;
   spdlog::info("Hyprland IPC stopping...");
   if (socketfd_ != -1) {