[Interest] Return value from QProcess

[Duane]

On 06/04/2016 1:22 PM, Thiago Macieira wrote:
> On quarta-feira, 6 de abril de 2016 08:47:58 PDT Thiago Macieira wrote:
>> On quarta-feira, 6 de abril de 2016 10:47:39 PDT Duane wrote:
>>> This works in the sense that it returns 0 when there's no error but it
>>> doesn't seem to return the return value from insmod.  For example,
>>> insmod returns 4531 when the file is already loaded but
>>> QProcess::exitCode is 17.  I can rmmod module I guess.
>>
>> The error code cannot be 4531. There aren't enough bits in the kernel
>> structure that returns status codes.
>>
>> /* If WIFEXITED(STATUS), the low-order 8 bits of the status.  */
>> #define	__WEXITSTATUS(status)	(((status) & 0xff00) >> 8)
>
> BTW
>
> $ printf %x\\n 4531
> 11b3
>
> 0x11 is 17. So QProcess is correct.
>


Thanks.  Actually 4531 was a typo.  It returns 4352 which is 1100.
So that explains it. std::system is returning it as an int. But then 
again, QProcess::exitCode() is supposed to be returning it as an int as 
well...