vl: allow full-blown QemuOpts syntax for -global

-global does not work for drivers that have a dot in their name, such as
cfi.pflash01.  This is just a parsing limitation, because such globals
can be declared easily inside a -readconfig file.

To allow this usage, support the full QemuOpts key/value syntax for -global
too, for example "-global driver=cfi.pflash01,property=secure,value=on".
The two formats do not conflict, because the key/value syntax does not have
a period before the first equal sign.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 11 insertions, 7 deletions

diff --git a/qdev-monitor.c b/qdev-monitor.c
index 1d87f573e8..9f17c81d9f 100644
--- a/qdev-monitor.c
+++ b/qdev-monitor.c
@@ -822,15 +822,19 @@ int qemu_global_option(const char *str)
     QemuOpts *opts;
     int rc, offset;
 
-    rc = sscanf(str, "%63[^.].%63[^=]%n", driver, property, &offset);
-    if (rc < 2 || str[offset] != '=') {
-        error_report("can't parse: \"%s\"", str);
+    rc = sscanf(str, "%63[^.=].%63[^=]%n", driver, property, &offset);
+    if (rc == 2 && str[offset] == '=') {
+        opts = qemu_opts_create(&qemu_global_opts, NULL, 0, &error_abort);
+        qemu_opt_set(opts, "driver", driver, &error_abort);
+        qemu_opt_set(opts, "property", property, &error_abort);
+        qemu_opt_set(opts, "value", str + offset + 1, &error_abort);
+        return 0;
+    }
+
+    opts = qemu_opts_parse(&qemu_global_opts, str, false);
+    if (!opts) {
         return -1;
     }
 
-    opts = qemu_opts_create(&qemu_global_opts, NULL, 0, &error_abort);
-    qemu_opt_set(opts, "driver", driver, &error_abort);
-    qemu_opt_set(opts, "property", property, &error_abort);
-    qemu_opt_set(opts, "value", str + offset + 1, &error_abort);
     return 0;
 }