56 lines
1.1 KiB
C
56 lines
1.1 KiB
C
/* vi: set sw=4 ts=4: */
|
|
/*
|
|
* disalloc.c - aeb - 940501 - Disallocate virtual terminal(s)
|
|
* Renamed deallocvt.
|
|
*/
|
|
#include "internal.h"
|
|
#include <stdlib.h>
|
|
#include <fcntl.h>
|
|
#include <sys/types.h>
|
|
#include <sys/ioctl.h>
|
|
#include <linux/vt.h>
|
|
#include <stdio.h>
|
|
|
|
char *progname;
|
|
|
|
int deallocvt_main(int argc, char *argv[])
|
|
{
|
|
int fd, num, i;
|
|
|
|
if ((argc != 2) || (**(argv + 1) == '-')) {
|
|
usage
|
|
("deallocvt N\n"
|
|
#ifndef BB_FEATURE_TRIVIAL_HELP
|
|
"\nDeallocate unused virtual terminal /dev/ttyN\n"
|
|
#endif
|
|
);
|
|
}
|
|
|
|
progname = argv[0];
|
|
|
|
fd = get_console_fd("/dev/console");
|
|
|
|
if (argc == 1) {
|
|
/* deallocate all unused consoles */
|
|
if (ioctl(fd, VT_DISALLOCATE, 0)) {
|
|
perror("VT_DISALLOCATE");
|
|
exit( FALSE);
|
|
}
|
|
} else
|
|
for (i = 1; i < argc; i++) {
|
|
num = atoi(argv[i]);
|
|
if (num == 0)
|
|
fprintf(stderr, "%s: 0: illegal VT number\n", progname);
|
|
else if (num == 1)
|
|
fprintf(stderr, "%s: VT 1 cannot be deallocated\n",
|
|
progname);
|
|
else if (ioctl(fd, VT_DISALLOCATE, num)) {
|
|
perror("VT_DISALLOCATE");
|
|
fprintf(stderr, "%s: could not deallocate console %d\n",
|
|
progname, num);
|
|
exit( FALSE);
|
|
}
|
|
}
|
|
return( TRUE);
|
|
}
|