[Interest] Return value from QProcess

Thiago Macieira thiago.macieira at intel.com
Wed Apr 6 17:47:58 CEST 2016

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)

Thiago Macieira - thiago (AT) macieira.info - thiago (AT) kde.org
   Software Architect - Intel Open Source Technology Center

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