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/* deallocvt.c - Deallocate virtual terminal(s)
*
* Copyright 2014 Vivek Kumar Bhagat <vivek.bhagat89@gmail.com>
*
* No Standard.
USE_DEALLOCVT(NEWTOY(deallocvt, ">1", TOYFLAG_USR|TOYFLAG_BIN|TOYFLAG_NEEDROOT))
config DEALLOCVT
bool "deallocvt"
depends on OPENVT
default n
help
usage: deallocvt [N]
Deallocate unused virtual terminal /dev/ttyN
default value of N is 0, deallocate all unused consoles
*/
#include "toys.h"
#include <linux/vt.h>
void deallocvt_main(void)
{
int fd;
// 0 : deallocate all unused consoles
int vt_num = 0;
if (toys.optargs[0])
vt_num = atolx_range(toys.optargs[0], 1, 63);
fd = find_console_fd();
if (fd < 0) error_exit("can't open console");
xioctl(fd, VT_DISALLOCATE, (void *)(ptrdiff_t)vt_num);
}
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