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Patch by Tito, reduce size of deallocvt, also make the usage message

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clearer (from N to [N]) and indirectly (through bb_xgetlarg) adds support
for  -h ;-)
This commit is contained in:
Glenn L McGrath
2004-01-15 11:50:19 +00:00
parent 67285965f3
commit 17b4a20a9c
2 changed files with 20 additions and 25 deletions
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38
console-tools/deallocvt.c
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@@ -34,33 +34,23 @@ static const int VT_DISALLOCATE = 0x5608; /* free memory associated to vt */
int deallocvt_main(int argc, char *argv[])
{
int fd, num = 0;
/* num = 0 deallocate all unused consoles */
int num = 0;
if (argc > 2) {
bb_show_usage();
}
fd = get_console_fd();
/* num=0 deallocate all unused consoles */
if (argc == 1) {
goto disallocate_all;
}
num = bb_xgetlarg(argv[1], 10, 0, INT_MAX);
switch (num) {
case 0:
bb_error_msg("0: illegal VT number");
break;
switch(argc)
{
case 2:
if((num = bb_xgetlarg(argv[1], 10, 0, INT_MAX)) == 0)
bb_error_msg_and_die("0: illegal VT number");
/* Falltrough */
case 1:
bb_error_msg("VT 1 cannot be deallocated");
break;
default:
disallocate_all:
if (ioctl(fd, VT_DISALLOCATE, num)) {
bb_perror_msg_and_die("VT_DISALLOCATE");
}
return EXIT_SUCCESS;
bb_show_usage();
}
return EXIT_FAILURE;
if (ioctl( get_console_fd(), VT_DISALLOCATE, num )) {
bb_perror_msg_and_die("VT_DISALLOCATE");
}
return EXIT_SUCCESS;
}