+/* vi: set sw=4 ts=4: */
/*
* disalloc.c - aeb - 940501 - Disallocate virtual terminal(s)
* Renamed deallocvt.
*/
#include <stdlib.h>
+#include <stdio.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/ioctl.h>
-#include <linux/vt.h>
-#include <stdio.h>
+#include "busybox.h"
-extern int getfd(void);
-char *progname;
+/* From <linux/vt.h> */
+static const int VT_DISALLOCATE = 0x5608; /* free memory associated to vt */
-int
-deallocvt_main(int argc, char *argv[]) {
- int fd, num, i;
+int deallocvt_main(int argc, char *argv[])
+{
+ int fd, num, i;
- if (argc < 1) /* unlikely */
- exit(1);
- progname = argv[0];
+ //if ((argc > 2) || ((argv == 2) && (**(argv + 1) == '-')))
+ if (argc > 2)
+ show_usage();
- fd = get_console_fd("/dev/console");
+ fd = get_console_fd("/dev/console");
- if (argc == 1) {
- /* deallocate all unused consoles */
- if (ioctl(fd,VT_DISALLOCATE,0)) {
- perror("VT_DISALLOCATE");
- exit(1);
+ if (argc == 1) {
+ /* deallocate all unused consoles */
+ if (ioctl(fd, VT_DISALLOCATE, 0))
+ perror_msg_and_die("VT_DISALLOCATE");
+ } else {
+ for (i = 1; i < argc; i++) {
+ num = atoi(argv[i]);
+ if (num == 0)
+ error_msg("0: illegal VT number");
+ else if (num == 1)
+ error_msg("VT 1 cannot be deallocated");
+ else if (ioctl(fd, VT_DISALLOCATE, num))
+ perror_msg_and_die("VT_DISALLOCATE");
+ }
}
- } 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);
+
+ return EXIT_SUCCESS;
}