Re: [PATCH] ui/cocoa: Do not alert even without block devices

[Markus Armbruster <armbru@redhat.com>]

Philippe Mathieu-Daudé <f4bug@amsat.org> writes:

> On 13/2/22 03:14, Akihiko Odaki wrote:
>> Signed-off-by: Akihiko Odaki <akihiko.odaki@gmail.com>
>> ---
>>   ui/cocoa.m | 5 -----
>>   1 file changed, 5 deletions(-)
>> diff --git a/ui/cocoa.m b/ui/cocoa.m
>> index ac18e14ce01..271a2676026 100644
>> --- a/ui/cocoa.m
>> +++ b/ui/cocoa.m
>> @@ -1715,11 +1715,6 @@ static void addRemovableDevicesMenuItems(void)
>>         currentDevice = qmp_query_block(NULL);
>>       pointerToFree = currentDevice;
>> -    if(currentDevice == NULL) {
>> -        NSBeep();
>> -        QEMU_Alert(@"Failed to query for block devices!");
>> -        return;
>> -    }
>>         menu = [[[NSApp mainMenu] itemWithTitle:@"Machine"]
>> submenu];
>>   
>
> Cc'ing qemu-block@ and Markus (QMP).
>
> I always wondered the point of this annoying warning but never
> found out.

The condition conflates "query failed" (returns null with error and "no
block devices" (returns empty list, i.e. null, with no error set).
Quite suspicious.

Goes back to

    Author: John Arbuckle <programmingkidx@gmail.com>
    Date:   Fri Jun 19 10:53:27 2015 +0100

        ui/cocoa.m: Add machine menu items to change and eject removable drive media

        Adds all removable devices to the Machine menu as a Change and Eject menu
        item pair. ide-cd0 would have a "Change ide-cd0..." and "Eject ide-cd0"
        menu items.

        Signed-off-by: John Arbuckle <programmingkidx@gmail.com>
        Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
        Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

> Is this menu updated when removable blkdev are hot-plugged from
> the monitor or QMP?
>
> Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>