From: Wei Liu <wei.liu2@citrix.com>
To: Xen-devel <xen-devel@lists.xenproject.org>
Cc: Andrew Cooper <andrew.cooper3@citrix.com>,
Ian Jackson <Ian.Jackson@eu.citrix.com>,
Wei Liu <wei.liu2@citrix.com>
Subject: [PATCH v2 5/6] docs: document xenconsole startup protocol
Date: Fri, 5 Aug 2016 18:41:33 +0100 [thread overview]
Message-ID: <1470418894-11358-6-git-send-email-wei.liu2@citrix.com> (raw)
In-Reply-To: <1470418894-11358-1-git-send-email-wei.liu2@citrix.com>
Signed-off-by: Wei Liu <wei.liu2@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
---
docs/misc/console.txt | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/docs/misc/console.txt b/docs/misc/console.txt
index ed7b795..16da805 100644
--- a/docs/misc/console.txt
+++ b/docs/misc/console.txt
@@ -124,3 +124,9 @@ can only have one pv console with xenstored as backend (the stubdom
could provide pv console backends to the hvm guest but then it would
need another pv console connection for each console backend to export
the pty to dom0).
+
+The xenconsole program supports a very simple protocol to notify parent about
+its readiness. If xenconsole (the client) is exec'ed and has been given a fd
+(normally the write end of a pipe) via --start-notify-fd option, it will
+write 0x00 to that fd after connecting to the guest but before entering the
+event loop. Parent can read from the read end of the fd to know the status.
--
2.1.4
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next prev parent reply other threads:[~2016-08-05 17:41 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-05 17:41 [PATCH v2 0/6] Fix console synchronisation issues Wei Liu
2016-08-05 17:41 ` [PATCH v2 1/6] tools/console: fix help string in client Wei Liu
2016-08-05 17:41 ` [PATCH v2 2/6] tools/console: introduce --start-notify-fd option for console client Wei Liu
2016-08-08 10:11 ` Ian Jackson
2016-08-05 17:41 ` [PATCH v2 3/6] libxl: factor out libxl__console_tty_path Wei Liu
2016-08-08 10:12 ` Ian Jackson
2016-08-05 17:41 ` [PATCH v2 4/6] libxl: libxl_{primary_, }console_exec now take notify_fd argument Wei Liu
2016-08-08 10:15 ` Ian Jackson
2016-08-08 10:16 ` Wei Liu
2016-08-08 10:34 ` Wei Liu
2016-08-08 11:06 ` Ian Jackson
2016-08-05 17:41 ` Wei Liu [this message]
2016-08-05 17:41 ` [PATCH v2 6/6] xl: use xenconsole startup protocol Wei Liu
2016-08-08 10:17 ` Ian Jackson
2016-08-08 10:32 ` Wei Liu
2016-08-08 11:06 ` [PATCH v2 0/6] Fix console synchronisation issues Wei Liu
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