| 1 | #include "stdio_impl.h" |
| 2 | #include <errno.h> |
| 3 | |
| 4 | int fileno(FILE *f) |
| 5 | { |
| 6 | 	FLOCK(f); |
| 7 | 	int fd = f->fd; |
| 8 | 	FUNLOCK(f); |
| 9 | 	if (fd < 0) { |
| 10 | 		errno = EBADF; |
| 11 | 		return -1; |
| 12 | 	} |
| 13 | 	return fd; |
| 14 | } |
| 15 | |
| 16 | weak_alias(fileno, fileno_unlocked); |