ia64/xen-unstable

view tools/xenstore/xenstored_watch.h @ 7238:971e7c7411b3

Raise an exception if an error appears on the pipes to our children, and make
sure that the child's pipes are closed even under that exception. Move the
handling of POLLHUP to the end of the loop, so that we guarantee to read any
remaining data from the child if POLLHUP and POLLIN appear at the same time.

Signed-off-by: Ewan Mellor <ewan@xensource.com>
author emellor@ewan
date Thu Oct 06 10:13:11 2005 +0100 (2005-10-06)
parents ef9591d03fdd
children 93e27f7ca8a8 61b3b357d827 b67873a9e3ac
line source
1 /*
2 Watch code for Xen Store Daemon.
3 Copyright (C) 2005 Rusty Russell IBM Corporation
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 */
20 #ifndef _XENSTORED_WATCH_H
21 #define _XENSTORED_WATCH_H
23 #include "xenstored_core.h"
25 void do_watch(struct connection *conn, struct buffered_data *in);
26 void do_watch_ack(struct connection *conn, const char *token);
27 void do_unwatch(struct connection *conn, struct buffered_data *in);
29 /* Is this a watch event message for this connection? */
30 bool is_watch_event(struct connection *conn, struct buffered_data *out);
32 /* Look through our watches: if any of them have an event, queue it. */
33 void queue_next_event(struct connection *conn);
35 /* Fire all watches: recurse means all the children are affected (ie. rm).
36 */
37 void fire_watches(struct connection *conn, const char *name, bool recurse);
39 void dump_watches(struct connection *conn);
41 #endif /* _XENSTORED_WATCH_H */