Re: [Qemu-devel] [PATCH v2 2/3] exec.c: check memory backend file size with 'size' option

[Paolo Bonzini <pbonzini@redhat.com>]

On 31/10/2016 18:23, Eduardo Habkost wrote:
> On Thu, Oct 27, 2016 at 12:22:59PM +0800, Haozhong Zhang wrote:
>> If the memory backend file is not large enough to hold the required 'size',
>> Qemu will report error and exit.
>>
>> Signed-off-by: Haozhong Zhang <haozhong.zhang@intel.com>
> 
> Applied to machine-next. Thanks!

Also part of my pull request. :)

Paolo

>> ---
>>  exec.c | 7 +++++++
>>  1 file changed, 7 insertions(+)
>>
>> diff --git a/exec.c b/exec.c
>> index a2b371a..264a25f 100644
>> --- a/exec.c
>> +++ b/exec.c
>> @@ -1316,6 +1316,13 @@ static void *file_ram_alloc(RAMBlock *block,
>>          goto error;
>>      }
>>  
>> +    if (file_size > 0 && file_size < memory) {
>> +        error_setg(errp, "backing store %s size %"PRId64
>> +                   " does not match 'size' option %"PRIu64,
>> +                   path, file_size, memory);
>> +        goto error;
>> +    }
>> +
>>      memory = ROUND_UP(memory, block->page_size);
>>  
>>      /*
>> -- 
>> 2.10.1
>>
>>
>