char: use a const CharDriver

No need to allocate & copy fields, let's use static const struct instead.

Add an alias field to the CharDriver structure to cover the cases where
we previously registered a driver twice under two names.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 12 insertions, 4 deletions

diff --git a/spice-qemu-char.c b/spice-qemu-char.c
index 276c4aef68..30db420e2f 100644
--- a/spice-qemu-char.c
+++ b/spice-qemu-char.c
@@ -389,10 +389,18 @@ static void qemu_chr_parse_spice_port(QemuOpts *opts, ChardevBackend *backend,
 
 static void register_types(void)
 {
-    register_char_driver("spicevmc", CHARDEV_BACKEND_KIND_SPICEVMC,
-                         qemu_chr_parse_spice_vmc, qemu_chr_open_spice_vmc);
-    register_char_driver("spiceport", CHARDEV_BACKEND_KIND_SPICEPORT,
-                         qemu_chr_parse_spice_port, qemu_chr_open_spice_port);
+    static const CharDriver vmc_driver = {
+        .kind = CHARDEV_BACKEND_KIND_SPICEVMC,
+        .parse = qemu_chr_parse_spice_vmc,
+        .create = qemu_chr_open_spice_vmc,
+    };
+    static const CharDriver port_driver = {
+        .kind = CHARDEV_BACKEND_KIND_SPICEPORT,
+        .parse = qemu_chr_parse_spice_port,
+        .create = qemu_chr_open_spice_port,
+    };
+    register_char_driver(&vmc_driver);
+    register_char_driver(&port_driver);
 }
 
 type_init(register_types);