busybox/console-tools/deallocvt.c
Erik Andersen 59b9e87024 * cp -fa now works as expected for symlinks (it didn't before)
* zcat works again (wasn't working since option parsing was broken)
* more doc updates/more support for BB_FEATURE_SIMPLE_HELP
 -Erik
2000-05-10 05:05:45 +00:00

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(1);
}
} 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(1);
}
}
exit(0);
}