| 1 | #include <err.h> |
| 2 | #include <errno.h> |
| 3 | #include <stdio.h> |
| 4 | #include <stdlib.h> |
| 5 | #include <unistd.h> |
| 6 | |
| 7 | int |
| 8 | main(int argc, char *argv[]) |
| 9 | { |
| 10 | int i; |
| 11 | |
| 12 | if (argc < 2) |
| 13 | exit(1); |
| 14 | |
| 15 | for (i = 1; i < argc; ++i) { |
| 16 | char *endptr; |
| 17 | int fd; |
| 18 | |
| 19 | fd = strtol(argv[i], &endptr, 10); |
| 20 | if (*endptr != '\0') |
| 21 | exit(1); |
| 22 | |
| 23 | if (close(fd) < 0) { |
| 24 | int error = errno; |
| 25 | |
| 26 | if (error != EBADF) { |
| 27 | warnx("close error %d", error); |
| 28 | exit(2); |
| 29 | } |
| 30 | } else { |
| 31 | warnx("%d is still valid", fd); |
| 32 | exit(2); |
| 33 | } |
| 34 | } |
| 35 | exit(0); |
| 36 | } |