/* vi: set sw=4 ts=4: */ /* * Disallocate virtual terminal(s) * * Copyright (C) 2003 by Tito Ragusa <farmatito@tiscali.it> * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org> * * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. */ /* no options, no getopt */ #include "busybox.h" /* From <linux/vt.h> */ enum { VT_DISALLOCATE = 0x5608 }; /* free memory associated to vt */ int deallocvt_main(int argc, char *argv[]) { /* num = 0 deallocate all unused consoles */ int num = 0; switch (argc) { case 2: num = xatoul_range(argv[1], 1, 63); /* Fallthrough */ case 1: break; default: bb_show_usage(); } if (-1 == ioctl(get_console_fd(), VT_DISALLOCATE, num)) { bb_perror_msg_and_die("VT_DISALLOCATE"); } return EXIT_SUCCESS; }