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/* vi: set sw=4 ts=4: */
/*
* disalloc.c - aeb - 940501 - Disallocate virtual terminal(s)
* Renamed deallocvt.
*/
#include "busybox.h"
#include <stdlib.h>
#include <stdio.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/ioctl.h>
/* From <linux/vt.h> */
#define 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)
usage(deallocvt_usage);
fd = get_console_fd("/dev/console");
if (argc == 1) {
/* deallocate all unused consoles */
if (ioctl(fd, VT_DISALLOCATE, 0)) {
perror("VT_DISALLOCATE");
return EXIT_FAILURE;
}
} else {
for (i = 1; i < argc; i++) {
num = atoi(argv[i]);
if (num == 0)
error_msg("0: illegal VT number\n");
else if (num == 1)
error_msg("VT 1 cannot be deallocated\n");
else if (ioctl(fd, VT_DISALLOCATE, num)) {
perror("VT_DISALLOCATE");
error_msg_and_die("could not deallocate console %d\n", num);
}
}
}
return EXIT_SUCCESS;
}
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