/* no options, no getopt */
-#include "busybox.h"
+#include "libbb.h"
/* From <linux/vt.h> */
enum { VT_DISALLOCATE = 0x5608 }; /* free memory associated to vt */
-int deallocvt_main(int argc, char *argv[]);
-int deallocvt_main(int argc, char *argv[])
+int deallocvt_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int deallocvt_main(int argc ATTRIBUTE_UNUSED, char **argv)
{
/* num = 0 deallocate all unused consoles */
int num = 0;
- switch (argc) {
- case 2:
- num = xatoul_range(argv[1], 1, 63);
- /* Fallthrough */
- case 1:
- break;
- default:
- bb_show_usage();
+ if (argv[1]) {
+ if (argv[2])
+ bb_show_usage();
+ num = xatou_range(argv[1], 1, 63);
}
- if (-1 == ioctl(get_console_fd(), VT_DISALLOCATE, num)) {
- bb_perror_msg_and_die("VT_DISALLOCATE");
- }
+ /* double cast suppresses "cast to ptr from int of different size" */
+ xioctl(get_console_fd(), VT_DISALLOCATE, (void *)(ptrdiff_t)num);
return EXIT_SUCCESS;
}