From 592675022ed7faea98d92c288155235e6b14ede7 Mon Sep 17 00:00:00 2001
From: Bananymous <oskari.alaranta@bananymous.com>
Date: Mon, 5 May 2025 19:08:30 +0300
Subject: [PATCH] Kernel: Allow tcgetpgrp on pseudo terminal masters

---
 kernel/kernel/Process.cpp | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/kernel/kernel/Process.cpp b/kernel/kernel/Process.cpp
index d42154a5..85217e8c 100644
--- a/kernel/kernel/Process.cpp
+++ b/kernel/kernel/Process.cpp
@@ -2309,10 +2309,16 @@ namespace Kernel
 	{
 		LockGuard _(m_process_lock);
 
+		auto inode = TRY(m_open_file_descriptors.inode_of(fd));
+
+		// NOTE: This is a hack but I'm not sure how terminal is supposted to get
+		//       slave's foreground pgroup while not having controlling terminal
+		if (TRY(m_open_file_descriptors.path_of(fd)) == "<ptmx>"_sv)
+			return TRY(static_cast<PseudoTerminalMaster*>(inode.ptr())->slave())->foreground_pgrp();
+
 		if (!m_controlling_terminal)
 			return BAN::Error::from_errno(ENOTTY);
 
-		auto inode = TRY(m_open_file_descriptors.inode_of(fd));
 		if (!inode->is_tty())
 			return BAN::Error::from_errno(ENOTTY);