openenvutils/commandshell/shell/inc/poll.h
changeset 0 2e3d3ce01487
child 1 0fdb7f6b0309
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/openenvutils/commandshell/shell/inc/poll.h	Tue Feb 02 10:12:00 2010 +0200
@@ -0,0 +1,96 @@
+/*-
+ * Copyright (c) 1997 Peter Wemm <peter@freebsd.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * © Portions copyright (c) 2007 Symbian Software Ltd. All rights reserved.
+ * $FreeBSD: src/sys/sys/poll.h,v 1.13 2002/07/10 04:47:25 mike Exp $
+ */
+
+#ifndef _SYS_POLL_H_
+#define	_SYS_POLL_H_
+
+#include <sys/cdefs.h>
+
+/*
+ * This file is intended to be compatible with the traditional poll.h.
+ */
+
+typedef	unsigned int	nfds_t;
+
+/*
+ * This structure is passed as an array to poll(2).
+ */
+struct pollfd {
+	int	fd;		/* which file descriptor to poll */
+	short	events;		/* events we are interested in */
+	short	revents;	/* events found on return */
+};
+
+/*
+ * Requestable events.  If poll(2) finds any of these set, they are
+ * copied to revents on return.
+ * XXX Note that FreeBSD doesn't make much distinction between POLLPRI
+ * and POLLRDBAND since none of the file types have distinct priority
+ * bands - and only some have an urgent "mode".
+ * XXX Note POLLIN isn't really supported in true SVSV terms.  Under SYSV
+ * POLLIN includes all of normal, band and urgent data.  Most poll handlers
+ * on FreeBSD only treat it as "normal" data.
+ */
+#define	POLLIN		0x0001		/* any readable data available */
+#define	POLLPRI		0x0002		/* OOB/Urgent readable data */
+#define	POLLOUT		0x0004		/* file descriptor is writeable */
+#define	POLLRDNORM	0x0040		/* non-OOB/URG data available */
+#define	POLLWRNORM	POLLOUT		/* no write type differentiation */
+#define	POLLRDBAND	0x0080		/* OOB/Urgent readable data */
+#define	POLLWRBAND	0x0100		/* OOB/Urgent data can be written */
+
+#if __BSD_VISIBLE
+/* General FreeBSD extension (currently only supported for sockets): */
+#define	POLLINIGNEOF	0x2000		/* like POLLIN, except ignore EOF */
+#endif
+
+/*
+ * These events are set if they occur regardless of whether they were
+ * requested.
+ */
+#define	POLLERR		0x0008		/* some poll error occurred */
+#define	POLLHUP		0x0010		/* file descriptor was "hung up" */
+#define	POLLNVAL	0x0020		/* requested events "invalid" */
+
+#if __BSD_VISIBLE
+
+#define	POLLSTANDARD	(POLLIN|POLLPRI|POLLOUT|POLLRDNORM|POLLRDBAND|\
+			 POLLWRBAND|POLLERR|POLLHUP|POLLNVAL)
+
+/*
+ * Request that poll() wait forever.
+ * XXX in SYSV, this is defined in stropts.h, which is not included
+ * by poll.h.
+ */
+#define	INFTIM		(-1)
+
+#endif
+
+#endif /* !_SYS_POLL_H_ */