/* 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();	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;}