diff options
Diffstat (limited to 'bits/poll.h')
| -rw-r--r-- | bits/poll.h | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/bits/poll.h b/bits/poll.h index a3da4306ad..022a06cc1b 100644 --- a/bits/poll.h +++ b/bits/poll.h @@ -27,10 +27,13 @@ #define POLLPRI 02 /* There is urgent data to read. */ #define POLLOUT 04 /* Writing now will not block. */ -/* Some aliases. */ -#define POLLWRNORM POLLOUT -#define POLLRDNORM POLLIN -#define POLLRDBAND POLLPRI +#ifdef __USE_XOPEN +/* These values are defined in XPG4.2. */ +# define POLLRDNORM POLLIN /* Normal data may be read. */ +# define POLLRDBAND POLLPRI /* Priority data may be read. */ +# define POLLWRNORM POLLOUT /* Writing now will not block. */ +# define POLLWRBAND POLLOUT /* Priority data may be written. */ +#endif /* Event types always implicitly polled for. These bits need not be set in `events', but they will appear in `revents' to indicate the status of |