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Unbreak -no-quit for GTK, validate SDL options

PATCH Applied Peter Wu 2 participants 2 messages Jun 11, 2013

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Peter Wu

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#0 lore raw

PATCH 1/1 Unbreak -no-quit for GTK, validate SDL options

Certain options (-no-frame, -alt-grab, -ctrl-grab) only make sense with SDL. When compiling without SDL, these options (and -no-quit) print an error message and exit qemu.

In case QEMU is compiled with SDL support, the three aforementioned options still do not make sense with other display types. This patch addresses that issue by printing a warning. I have chosen not to exit QEMU afterwards because having the option is not harmful and before this patch it would be ignored anyway.

By delaying the sanity check from compile-time with some ifdefs to run-time, -no-quit is now also properly supported when compiling without SDL.

Signed-off-by Peter Wu <[email protected]>
---
 vl.c | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)
vl.c +10 -5
index cfd2d3e..29ab85c 100644
@@ -3523,7 +3523,6 @@ int main(int argc, char **argv, char **envp)
             case QEMU_OPTION_full_screen:
                 full_screen = 1;
                 break;
-#ifdef CONFIG_SDL
             case QEMU_OPTION_no_frame:
                 no_frame = 1;
                 break;

@@ -3536,14 +3535,11 @@ int main(int argc, char **argv, char **envp)
             case QEMU_OPTION_no_quit:
                 no_quit = 1;
                 break;
+#ifdef CONFIG_SDL
             case QEMU_OPTION_sdl:
                 display_type = DT_SDL;
                 break;
 #else
-            case QEMU_OPTION_no_frame:
-            case QEMU_OPTION_alt_grab:
-            case QEMU_OPTION_ctrl_grab:
-            case QEMU_OPTION_no_quit:
             case QEMU_OPTION_sdl:
                 fprintf(stderr, "SDL support is disabled\n");
                 exit(1);

@@ -4084,6 +4080,15 @@ int main(int argc, char **argv, char **envp)
 #endif
     }
 
+    if ((no_frame || alt_grab || ctrl_grab) && display_type != DT_SDL) {
+        fprintf(stderr, "-no-frame, -alt-grab and -ctrl-grab are only valid "
+                        "for SDL, ignoring option\n");
+    }
+    if (no_quit && (display_type != DT_GTK && display_type != DT_SDL)) {
+        fprintf(stderr, "-no-quit is only valid for GTK and SDL, "
+                        "ignoring option\n");
+    }
+
 #if defined(CONFIG_GTK)
     if (display_type == DT_GTK) {
         early_gtk_display_init();
Signature · 1 line
1.8.3
Applied
#1 lore raw
Quoted 4 lines · Peter Wu

Certain options (-no-frame, -alt-grab, -ctrl-grab) only make sense with SDL. When compiling without SDL, these options (and -no-quit) print an error message and exit qemu.

Quoted 8 lines

In case QEMU is compiled with SDL support, the three aforementioned options still do not make sense with other display types. This patch addresses that issue by printing a warning. I have chosen not to exit QEMU afterwards because having the option is not harmful and before this patch it would be ignored anyway.

By delaying the sanity check from compile-time with some ifdefs to run-time, -no-quit is now also properly supported when compiling without SDL.

Thanks, this is also something I wanted to do for a long time, -- to know when some options makes no sense (or not implemented) instead of wondering what I did wrong and why it does not work as expected... ;)

Applied to the trivial patches queue.

/mjt