[libvirt] [PATCH 2/3] abort QEMU if group name in option table doesn't match with defined option name

[Amos Kong]

All the options are defined in qemu-options.hx. If we can't find a
matched option definition by group name of option table, then the
group name doesn't match with defined option name, it's not allowed
from 2.0

Signed-off-by: Amos Kong <ak...@redhat.com>
---
 qemu-options.h     | 12 ++++++++++++
 util/qemu-config.c | 28 ++++++++++++++++++++++++++++
 vl.c               | 19 ++-----------------
 3 files changed, 42 insertions(+), 17 deletions(-)

diff --git a/qemu-options.h b/qemu-options.h
index 89a009e..4024487 100644
--- a/qemu-options.h
+++ b/qemu-options.h
@@ -28,9 +28,21 @@
 #ifndef _QEMU_OPTIONS_H_
 #define _QEMU_OPTIONS_H_
 
+#include "sysemu/arch_init.h"
+
 enum {
 #define QEMU_OPTIONS_GENERATE_ENUM
 #include "qemu-options-wrapper.h"
 };
 
+#define HAS_ARG 0x0001
+
+typedef struct QEMUOption {
+    const char *name;
+    int flags;
+    int index;
+    uint32_t arch_mask;
+} QEMUOption;
+
+extern const QEMUOption qemu_options[];
 #endif
diff --git a/util/qemu-config.c b/util/qemu-config.c
index f610101..eba5428 100644
--- a/util/qemu-config.c
+++ b/util/qemu-config.c
@@ -6,6 +6,14 @@
 #include "hw/qdev.h"
 #include "qapi/error.h"
 #include "qmp-commands.h"
+#include "qemu-options.h"
+
+const QEMUOption qemu_options[] = {
+    { "h", 0, QEMU_OPTION_h, QEMU_ARCH_ALL },
+#define QEMU_OPTIONS_GENERATE_OPTIONS
+#include "qemu-options-wrapper.h"
+    { NULL },
+};
 
 static QemuOptsList *vm_config_groups[32];
 static QemuOptsList *drive_config_groups[4];
@@ -184,6 +192,20 @@ void qemu_add_drive_opts(QemuOptsList *list)
     abort();
 }
 
+/* check if the option is defined in qemu-options.hx */
+static bool opt_is_defined(const char *name)
+{
+    int i;
+
+    for (i = 0; qemu_options[i].name; i++) {
+        if (!strcmp(qemu_options[i].name, name)) {
+            return true;
+        }
+    }
+
+    return false;
+}
+
 void qemu_add_opts(QemuOptsList *list)
 {
     int entries, i;
@@ -193,6 +215,12 @@ void qemu_add_opts(QemuOptsList *list)
     for (i = 0; i < entries; i++) {
         if (vm_config_groups[i] == NULL) {
             vm_config_groups[i] = list;
+            if (!opt_is_defined(list->name)) {
+                error_report("Didn't find a matched option definition, "
+                             "group name (%s) of option table must match with "
+                             "defined option name (Since 2.0)", list->name);
+                abort();
+            }
             return;
         }
     }
diff --git a/vl.c b/vl.c
index 596ecfa..580bd22 100644
--- a/vl.c
+++ b/vl.c
@@ -111,7 +111,6 @@ int main(int argc, char **argv)
 #include "trace/control.h"
 #include "qemu/queue.h"
 #include "sysemu/cpus.h"
-#include "sysemu/arch_init.h"
 #include "qemu/osdep.h"
 
 #include "ui/qemu-spice.h"
@@ -2082,22 +2081,6 @@ static void help(int exitcode)
     exit(exitcode);
 }
 
-#define HAS_ARG 0x0001
-
-typedef struct QEMUOption {
-    const char *name;
-    int flags;
-    int index;
-    uint32_t arch_mask;
-} QEMUOption;
-
-static const QEMUOption qemu_options[] = {
-    { "h", 0, QEMU_OPTION_h, QEMU_ARCH_ALL },
-#define QEMU_OPTIONS_GENERATE_OPTIONS
-#include "qemu-options-wrapper.h"
-    { NULL },
-};
-
 static bool vga_available(void)
 {
     return object_class_by_name("VGA") || object_class_by_name("isa-vga");
@@ -2842,6 +2825,8 @@ static const QEMUOption *lookup_opt(int argc, char **argv,
     return popt;
 }
 
+#undef HAS_ARG
+
 static gpointer malloc_and_trace(gsize n_bytes)
 {
     void *ptr = malloc(n_bytes);
-- 
1.8.5.3

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