t_pgid 553 bsp/drv/dev/base/tty.c if (copyin(data, &tp->t_pgid, sizeof(pid_t))) t_pgid 557 bsp/drv/dev/base/tty.c if (copyout(&tp->t_pgid, data, sizeof(pid_t))) t_pgid 69 bsp/drv/include/tty.h pid_t t_pgid; /* foreground process group. */