chardev: Properly initialize ChardevCommon components

Commit d0d7708b forgot to parse logging for spice chardevs and
virtual consoles. This requires making qemu_chr_parse_common()
non-static. While at it, use a temporary variable to make the
code shorter, as well as reduce the churn when a later patch
alters the layout of simple unions.
Signed-off-by: NEric Blake <eblake@redhat.com>
CC: Daniel P. Berrange <berrange@redhat.com>
Message-Id: <1455927587-28033-2-git-send-email-eblake@redhat.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

include/sysemu/char.h

@@ -114,6 +114,16 @@ CharDriverState *qemu_chr_new_from_opts(QemuOpts *opts,
                                     void (*init)(struct CharDriverState *s),
                                     Error **errp);
 
+/**
+ * @qemu_chr_parse_common:
+ *
+ * Parse the common options available to all character backends.
+ *
+ * @opts the options that still need parsing
+ * @backend a new backend
+ */
+void qemu_chr_parse_common(QemuOpts *opts, ChardevCommon *backend);
+
 /**
  * @qemu_chr_new:
  *

qemu-char.c

@@ -3490,7 +3490,7 @@ fail:
     return NULL;
 }
 
-static void qemu_chr_parse_common(QemuOpts *opts, ChardevCommon *backend)
+void qemu_chr_parse_common(QemuOpts *opts, ChardevCommon *backend)
 {
     const char *logfile = qemu_opt_get(opts, "logfile");
 

spice-qemu-char.c

@@ -366,26 +366,30 @@ static void qemu_chr_parse_spice_vmc(QemuOpts *opts, ChardevBackend *backend,
                                      Error **errp)
 {
     const char *name = qemu_opt_get(opts, "name");
+    ChardevSpiceChannel *spicevmc;
 
     if (name == NULL) {
         error_setg(errp, "chardev: spice channel: no name given");
         return;
     }
-    backend->u.spicevmc = g_new0(ChardevSpiceChannel, 1);
-    backend->u.spicevmc->type = g_strdup(name);
+    spicevmc = backend->u.spicevmc = g_new0(ChardevSpiceChannel, 1);
+    qemu_chr_parse_common(opts, qapi_ChardevSpiceChannel_base(spicevmc));
+    spicevmc->type = g_strdup(name);
 }
 
 static void qemu_chr_parse_spice_port(QemuOpts *opts, ChardevBackend *backend,
                                       Error **errp)
 {
     const char *name = qemu_opt_get(opts, "name");
+    ChardevSpicePort *spiceport;
 
     if (name == NULL) {
         error_setg(errp, "chardev: spice port: no name given");
         return;
     }
-    backend->u.spiceport = g_new0(ChardevSpicePort, 1);
-    backend->u.spiceport->fqdn = g_strdup(name);
+    spiceport = backend->u.spiceport = g_new0(ChardevSpicePort, 1);
+    qemu_chr_parse_common(opts, qapi_ChardevSpicePort_base(spiceport));
+    spiceport->fqdn = g_strdup(name);
 }
 
 static void register_types(void)

ui/console.c

@@ -2060,31 +2060,33 @@ static void qemu_chr_parse_vc(QemuOpts *opts, ChardevBackend *backend,
                               Error **errp)
 {
     int val;
+    ChardevVC *vc;
 
-    backend->u.vc = g_new0(ChardevVC, 1);
+    vc = backend->u.vc = g_new0(ChardevVC, 1);
+    qemu_chr_parse_common(opts, qapi_ChardevVC_base(vc));
 
     val = qemu_opt_get_number(opts, "width", 0);
     if (val != 0) {
-        backend->u.vc->has_width = true;
-        backend->u.vc->width = val;
+        vc->has_width = true;
+        vc->width = val;
     }
 
     val = qemu_opt_get_number(opts, "height", 0);
     if (val != 0) {
-        backend->u.vc->has_height = true;
-        backend->u.vc->height = val;
+        vc->has_height = true;
+        vc->height = val;
     }
 
     val = qemu_opt_get_number(opts, "cols", 0);
     if (val != 0) {
-        backend->u.vc->has_cols = true;
-        backend->u.vc->cols = val;
+        vc->has_cols = true;
+        vc->cols = val;
     }
 
     val = qemu_opt_get_number(opts, "rows", 0);
     if (val != 0) {
-        backend->u.vc->has_rows = true;
-        backend->u.vc->rows = val;
+        vc->has_rows = true;
+        vc->rows = val;
     }
 }