/* vi: set sw=4 ts=4: */ /* * disalloc.c - aeb - 940501 - Disallocate virtual terminal(s) * Renamed deallocvt. */ #include <stdlib.h> #include <stdio.h> #include <fcntl.h> #include <sys/types.h> #include <sys/ioctl.h> #include "busybox.h" /* From <linux/vt.h> */ static const int VT_DISALLOCATE = 0x5608; /* free memory associated to vt */ int deallocvt_main(int argc, char *argv[]) { int fd, num, i; //if ((argc > 2) || ((argv == 2) && (**(argv + 1) == '-'))) if (argc > 2) show_usage(); fd = get_console_fd("/dev/console"); if (argc == 1) { /* deallocate all unused consoles */ if (ioctl(fd, VT_DISALLOCATE, 0)) perror_msg_and_die("VT_DISALLOCATE"); } else { for (i = 1; i < argc; i++) { num = atoi(argv[i]); if (num == 0) error_msg("0: illegal VT number"); else if (num == 1) error_msg("VT 1 cannot be deallocated"); else if (ioctl(fd, VT_DISALLOCATE, num)) perror_msg_and_die("VT_DISALLOCATE"); } } return EXIT_SUCCESS; }