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[Qemu-devel] [PATCH 1/3] spice-qemu-char: Generate chardev open/close ev
From: |
Hans de Goede |
Subject: |
[Qemu-devel] [PATCH 1/3] spice-qemu-char: Generate chardev open/close events |
Date: |
Sun, 7 Aug 2011 15:21:22 +0200 |
Define a state callback and make that generate chardev open/close events when
called by the spice-server.
Note that for all but the newest spice-server versions (which have a fix for
this) the code ignores these events for a spicevmc with a subtype of vdagent,
this subtype specific knowledge is undesirable, but unavoidable for now, see:
http://lists.freedesktop.org/archives/spice-devel/2011-July/004837.html
Signed-off-by: Hans de Goede <address@hidden>
---
spice-qemu-char.c | 46 +++++++++++++++++++++++++++++++++++++++++++++-
1 files changed, 45 insertions(+), 1 deletions(-)
diff --git a/spice-qemu-char.c b/spice-qemu-char.c
index 95bf6b6..0a5059d 100644
--- a/spice-qemu-char.c
+++ b/spice-qemu-char.c
@@ -69,11 +69,50 @@ static int vmc_read(SpiceCharDeviceInstance *sin, uint8_t
*buf, int len)
return bytes;
}
+static void vmc_state(SpiceCharDeviceInstance *sin, int connected)
+{
+ SpiceCharDriver *scd = container_of(sin, SpiceCharDriver, sin);
+ int event;
+
+#if SPICE_SERVER_VERSION < 0x000901
+ /*
+ * spice-server calls the state callback for the agent channel when the
+ * spice client connects / disconnects. Given that not the client but
+ * the server is doing the parsing of the messages this is wrong as the
+ * server is still listening. Worse, this causes the parser in the server
+ * to go out of sync, so we ignore state calls for subtype vdagent
+ * spicevmc chardevs. For the full story see:
+ * http://lists.freedesktop.org/archives/spice-devel/2011-July/004837.html
+ */
+ if (strcmp(sin->subtype, "vdagent") == 0) {
+ return;
+ }
+#endif
+
+ if ((scd->chr->opened && connected) ||
+ (!scd->chr->opened && !connected)) {
+ return;
+ }
+
+ if (connected) {
+ scd->chr->opened = 1;
+ event = CHR_EVENT_OPENED;
+ } else {
+ scd->chr->opened = 0;
+ event = CHR_EVENT_CLOSED;
+ }
+
+ if (scd->chr->chr_event) {
+ scd->chr->chr_event(scd->chr->handler_opaque, event);
+ }
+}
+
static SpiceCharDeviceInterface vmc_interface = {
.base.type = SPICE_INTERFACE_CHAR_DEVICE,
.base.description = "spice virtual channel char device",
.base.major_version = SPICE_INTERFACE_CHAR_DEVICE_MAJOR,
.base.minor_version = SPICE_INTERFACE_CHAR_DEVICE_MINOR,
+ .state = vmc_state,
.write = vmc_write,
.read = vmc_read,
};
@@ -197,7 +236,12 @@ int qemu_chr_open_spice(QemuOpts *opts, CharDriverState
**_chr)
chr->chr_guest_open = spice_chr_guest_open;
chr->chr_guest_close = spice_chr_guest_close;
- qemu_chr_generic_open(chr);
+#if SPICE_SERVER_VERSION < 0x000901
+ /* See comment in vmc_state() */
+ if (strcmp(subtype, "vdagent") == 0) {
+ qemu_chr_generic_open(chr);
+ }
+#endif
*_chr = chr;
return 0;
--
1.7.5.1
- [Qemu-devel] [PATCH 1/3] spice-qemu-char: Generate chardev open/close events,
Hans de Goede <=
- [Qemu-devel] [PATCH 2/3] usb-redir: Call qemu_chr_guest_open/close, Hans de Goede, 2011/08/07
- Re: [Qemu-devel] [PATCH 2/3] usb-redir: Call qemu_chr_guest_open/close, Anthony Liguori, 2011/08/07
- Re: [Qemu-devel] [PATCH 2/3] usb-redir: Call qemu_chr_guest_open/close, Hans de Goede, 2011/08/07
- Re: [Qemu-devel] [PATCH 2/3] usb-redir: Call qemu_chr_guest_open/close, Anthony Liguori, 2011/08/07
- Re: [Qemu-devel] [PATCH 2/3] usb-redir: Call qemu_chr_guest_open/close, Hans de Goede, 2011/08/08
- Re: [Qemu-devel] [PATCH 2/3] usb-redir: Call qemu_chr_guest_open/close, Anthony Liguori, 2011/08/08
- Re: [Qemu-devel] [PATCH 2/3] usb-redir: Call qemu_chr_guest_open/close, Hans de Goede, 2011/08/08
- Re: [Qemu-devel] [PATCH 2/3] usb-redir: Call qemu_chr_guest_open/close, Anthony Liguori, 2011/08/08
[Qemu-devel] [PATCH 3/3] usb-redir: Device disconnect + re-connect robustness fixes, Hans de Goede, 2011/08/07
Re: [Qemu-devel] [PATCH 1/3] spice-qemu-char: Generate chardev open/close events, Anthony Liguori, 2011/08/07