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ui/vdagent: core infrastructure

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The vdagent protocol allows the guest agent (spice-vdagent) and the
spice client exchange messages to implement features which require
guest cooperation, for example clipboard support.

This is a qemu implementation of the spice client side.  This allows
the spice guest agent talk to qemu directly when not using the spice
protocol.

usage: qemu \
  -chardev qemu-vdagent,id=vdagent \
  -device virtserialport,chardev=vdagent,name=com.redhat.spice.0

This patch adds just the protocol basics: initial handshake and
capability negotiation.  The following patches will add actual
functionality and also add fields to the initially empty
ChardevVDAgent qapi struct.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: 20210519053940.1888907-1-kraxel@redhat.com
Message-Id: <20210519053940.1888907-5-kraxel@redhat.com>
This commit is contained in:
Gerd Hoffmann 2021-05-19 07:39:35 +02:00
parent 3f20c6d654
commit de74a22cc8
4 changed files with 386 additions and 1 deletions
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8
ui/trace-events
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@ -124,3 +124,11 @@ xkeymap_extension(const char *name) "extension '%s'"
xkeymap_vendor(const char *name) "vendor '%s'"
xkeymap_keycodes(const char *name) "keycodes '%s'"
xkeymap_keymap(const char *name) "keymap '%s'"
# vdagent.c
vdagent_open(void) ""
vdagent_close(void) ""
vdagent_send(const char *name) "msg %s"
vdagent_recv_chunk(uint32_t size) "size %d"
vdagent_recv_msg(const char *name, uint32_t size) "msg %s, size %d"
vdagent_peer_cap(const char *name) "cap %s"