[Interest] Return value from QProcess

[Duane]

On 06/04/2016 11:47 AM, 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)
>

4352. Sorry typo.

Using this call:
int res = std::system("/sbin/insmod /mnt/sdb1/uio_netx.ko");

Anyway, I don't really need to do this.  I use this to load a Profibus 
mini pci module.  When the module isn't loaded I get a failure trying to 
initialize the "board" that's more explicit.