terminal: Use forkpty()

terminal/TerminalWidget.cpp

@@ -54,34 +54,14 @@ Result<void> TerminalWidget::init(char* const* args)
     signal(SIGCHLD, sigchld_handler);
 
     int master;
-    int slave;
-
-    int result = openpty(&master, &slave, nullptr, nullptr, nullptr);
-    if (result < 0) return err(errno);
-
-    pid_t child = TRY(os::Process::fork());
+    pid_t child = forkpty(&master, nullptr, nullptr, nullptr);
+    if (child < 0) return err(errno);
     if (child == 0)
     {
-        setsid();
-
-        close(master);
-
-        ioctl(slave, TIOCSCTTY);
-
-        dup2(slave, STDIN_FILENO);
-        dup2(slave, STDOUT_FILENO);
-        dup2(slave, STDERR_FILENO);
-
-        tcsetpgrp(slave, getpid());
-
-        close(slave);
-
         execv(args[0], args);
         _exit(127);
     }
 
-    close(slave);
-
     m_pty = master;
 
     fcntl(master, F_SETFL, O_NONBLOCK);