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+/* `fd_set' type and related macros, and `select'/`pselect' declarations.
+Copyright (C) 1996 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 Library General Public License as
+published by the Free Software Foundation; either version 2 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB. If
+not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA. */
+
+/* POSIX 1003.1g: 6.2 Select from File Descriptor Sets <sys/select.h> */
+
+#ifndef __SYS_SELECT_H
+
+#define __SYS_SELECT_H 1
+#include <features.h>
+
+/* Get definition of needed basic types. */
+#include <gnu/types.h>
+
+/* Get definition of timer specification structures. */
+/* XXX this is wrong. 1003.1gD6.1 says `struct timespec'
+ is defined by <sys/select.h>, and that is all.
+ However, since a program is required to include <sys/time.h>
+ before using select/pselect anyway, perhaps it doesn't matter. */
+#include <sys/time.h>
+
+__BEGIN_DECLS
+
+/* Representation of a set of file descriptors. */
+#define fd_set __fd_set
+
+/* Maximum number of file descriptors in `fd_set'. */
+#define FD_SETSIZE __FD_SETSIZE
+
+#ifdef __USE_MISC
+/* Number of bits per word of `fd_set' (some code assumes this is 32). */
+#define NFDBITS __NFDBITS
+#endif
+
+
+/* Access macros for `fd_set'. */
+#define FD_SET(fd, fdsetp) __FD_SET ((fd), (fdsetp))
+#define FD_CLR(fd, fdsetp) __FD_CLR ((fd), (fdsetp))
+#define FD_ISSET(fd, fdsetp) __FD_ISSET ((fd), (fdsetp))
+#define FD_ZERO(fdsetp) __FD_ZERO (fdsetp)
+
+
+/* Check the first NFDS descriptors each in READFDS (if not NULL) for read
+ readiness, in WRITEFDS (if not NULL) for write readiness, and in EXCEPTFDS
+ (if not NULL) for exceptional conditions. If TIMEOUT is not NULL, time out
+ after waiting the interval specified therein. Returns the number of ready
+ descriptors, or -1 for errors. */
+extern int __select __P ((int __nfds, __fd_set *__readfds,
+ __fd_set *__writefds, __fd_set *__exceptfds,
+ struct timeval *__timeout));
+extern int select __P ((int __nfds, __fd_set *__readfds,
+ __fd_set *__writefds, __fd_set *__exceptfds,
+ struct timeval *__timeout));
+
+/* Same as above only that the TIMEOUT value is given with higher
+ resolution. This version should be used. */
+extern int __pselect __P ((int __nfds, __fd_set *__readfds,
+ __fd_set *__writefds, __fd_set *__exceptfds,
+ struct timespec *__timeout));
+extern int pselect __P ((int __nfds, __fd_set *__readfds,
+ __fd_set *__writefds, __fd_set *__exceptfds,
+ struct timespec *__timeout));
+
+__END_DECLS
+
+#endif /* sys/select.h */