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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 */