diff --git a/kernel/include/kernel/OpenFileDescriptorSet.h b/kernel/include/kernel/OpenFileDescriptorSet.h
index 4703789e..41c06041 100644
--- a/kernel/include/kernel/OpenFileDescriptorSet.h
+++ b/kernel/include/kernel/OpenFileDescriptorSet.h
@@ -58,6 +58,8 @@ namespace Kernel
 		BAN::ErrorOr<size_t> recvmsg(int socket, msghdr& message, int flags);
 		BAN::ErrorOr<size_t> sendmsg(int socket, const msghdr& message, int flags);
 
+		int get_max_open_fd() const;
+
 		BAN::ErrorOr<VirtualFileSystem::File> file_of(int) const;
 		BAN::ErrorOr<BAN::String> path_of(int) const;
 		BAN::ErrorOr<BAN::RefPtr<Inode>> inode_of(int);
diff --git a/kernel/kernel/OpenFileDescriptorSet.cpp b/kernel/kernel/OpenFileDescriptorSet.cpp
index 482631b1..df9b005a 100644
--- a/kernel/kernel/OpenFileDescriptorSet.cpp
+++ b/kernel/kernel/OpenFileDescriptorSet.cpp
@@ -853,6 +853,15 @@ namespace Kernel
 		return inode->sendmsg(message, flags | (is_nonblock ? MSG_DONTWAIT : 0));
 	}
 
+	int OpenFileDescriptorSet::get_max_open_fd() const
+	{
+		LockGuard _(m_mutex);
+		for (int fd = m_open_files.size() - 1; fd > 0; fd--)
+			if (m_open_files[fd])
+				return fd;
+		return -1;
+	}
+
 	BAN::ErrorOr<VirtualFileSystem::File> OpenFileDescriptorSet::file_of(int fd) const
 	{
 		LockGuard _(m_mutex);