| 46 | } |
| 47 | |
| 48 | int main(int argc, char *argv[]) |
| 49 | { |
| 50 | unsigned long val; |
| 51 | unsigned long port = POST_DEFAULT_IO_PORT; |
| 52 | char *endptr; |
| 53 | int err; |
| 54 | |
| 55 | if (argc != 2 && argc != 3) { |
| 56 | usage(argv[0], NULL); |
| 57 | exit(EXIT_FAILURE); |
| 58 | } |
| 59 | |
| 60 | val = strtol(argv[1], &endptr, 0); |
| 61 | err = errno; |
| 62 | check_int(val, 0x00, 0xff, err, argv[1], endptr, argv[0]); |
| 63 | |
| 64 | if (argc > 2) { |
| 65 | port = strtol(argv[2], &endptr, 0); |
| 66 | err = errno; |
| 67 | check_int(port, 0x0000, 0xffff, err, argv[2], endptr, argv[0]); |
| 68 | } |
| 69 | |
| 70 | err = iopl(3); |
| 71 | if (err == -1) { |
| 72 | perror("Not root"); |
| 73 | exit(EXIT_FAILURE); |
| 74 | } |
| 75 | |
| 76 | outb(val, port); |
| 77 | |
| 78 | return 0; |
| 79 | } |