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/* Copyright (C) 1997, 2000 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#ifndef _SYS_POLL_H
# error "Never use <bits/poll.h> directly; include <sys/poll.h> instead."
#endif
/* Event types that can be polled for. These bits may be set in `events'
to indicate the interesting event types; they will appear in `revents'
to indicate the status of the file descriptor. */
#define POLLIN 0x0001 /* There is data to read. */
#define POLLPRI 0x0002 /* There is urgent data to read. */
#define POLLOUT 0x0004 /* Writing now will not block. */
#ifdef __USE_XOPEN
/* These values are defined in XPG4.2. */
# define POLLRDNORM 0x0010 /* Normal data may be read. */
# define POLLRDBAND 0x0020 /* Priority data may be read. */
# define POLLWRNORM POLLOUT /* Writing now will not block. */
# define POLLWRBAND 0x0040 /* 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
the file descriptor. */
#define POLLERR 0x4000 /* Error condition. */
#define POLLHUP 0x2000 /* Hung up. */
#define POLLNVAL 0x8000 /* Invalid polling request. */
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