/*
* disalloc.c - aeb - 940501 - Disallocate virtual terminal(s)
* Renamed deallocvt.
*/
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <fcntl.h>
#include <ctype.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include <linux/vt.h>
#include <getopt.h>
#include <sysexits.h>
#include "libcommon.h"
static void __attribute__((noreturn))
usage(int rc, const struct kbd_help *options)
{
const struct kbd_help *h;
fprintf(stderr, _("Usage: %s [option...] [N ...]\n"), get_progname());
if (options) {
int max = 0;
fprintf(stderr, "\n");
fprintf(stderr, _("Options:"));
fprintf(stderr, "\n");
for (h = options; h && h->opts; h++) {
int len = (int) strlen(h->opts);
if (max < len)
max = len;
}
max += 2;
for (h = options; h && h->opts; h++)
fprintf(stderr, " %-*s %s\n", max, h->opts, h->desc);
}
fprintf(stderr, "\n");
fprintf(stderr, _("Report bugs to authors.\n"));
fprintf(stderr, "\n");
exit(rc);
}
int main(int argc, char *argv[])
{
int fd, num, i;
if (argc < 1) /* unlikely */
return EXIT_FAILURE;
set_progname(argv[0]);
setuplocale();
const char *const short_opts = "hV";
const struct option long_opts[] = {
{ "help", no_argument, NULL, 'h' },
{ "version", no_argument, NULL, 'V' },
{ NULL, 0, NULL, 0 }
};
const struct kbd_help opthelp[] = {
{ "-h, --help", _("print this usage message.") },
{ "-V, --version", _("print version number.") },
{ NULL, NULL }
};
while ((i = getopt_long(argc, argv, short_opts, long_opts, NULL)) != -1) {
switch (i) {
case 'V':
print_version_and_exit();
break;
case 'h':
usage(EXIT_SUCCESS, opthelp);
case '?':
usage(EX_USAGE, opthelp);
}
}
for (i = optind; i < argc; i++) {
if (!isdigit(argv[i][0])) {
kbd_warning(0, _("Unrecognized argument: %s"), argv[i]);
return EX_USAGE;
}
}
if ((fd = getfd(NULL)) < 0)
kbd_error(EXIT_FAILURE, 0, _("Couldn't get a file descriptor referring to the console."));
if (argc == 1) {
/* deallocate all unused consoles */
if (ioctl(fd, VT_DISALLOCATE, 0)) {
kbd_error(EXIT_FAILURE, errno, "ioctl VT_DISALLOCATE");
}
} else
for (i = 1; i < argc; i++) {
num = atoi(argv[i]);
if (num == 0) {
kbd_error(EXIT_FAILURE, 0, _("0: illegal VT number"));
} else if (num == 1) {
kbd_error(EXIT_FAILURE, 0, _("VT 1 is the console and cannot be deallocated"));
} else if (ioctl(fd, VT_DISALLOCATE, num)) {
kbd_error(EXIT_FAILURE, errno, _("could not deallocate console %d: "
"ioctl VT_DISALLOCATE"),
num);
}
}
exit(EXIT_SUCCESS);
}