How to call execve() form a function under linux2.4.x/driv..

Ken · External Since: Jul 13, 2007 Posts: 2

Hi all,

I am writing a driver for GPIO device, gpio_int.c, and I put it under /
linux-2.4.x/drivers/char.
I need to call execve() in a function, v_hwrb_timer_handler() in
gpio_int.c:

void v_hwrb_timer_handler()
{
...
execve(path, argv, argc);
...
}

When I make it, I get the result:

drivers/char/char.o(.text+0xe9c4): In function `v_hwrb_timer_handler':
: undefined reference to `execve'
make[1]: *** [linux] Error 1
make[1]: Leaving directory `/home/uClinux-dist/linux-2.4.x'
make: *** [linux] Error 1

Can anyone present ideas for it?

Sincerely,

Ken

david m · External Since: Jul 13, 2007 Posts: 6

This message is not archived

Wolfgang Mües · External Since: Apr 07, 2004 Posts: 21

Ken wrote:

> I am writing a driver for GPIO device, gpio_int.c, and I put it under /
> linux-2.4.x/drivers/char.
> I need to call execve() in a function
execve() is not supported inside the kernel. It is only available in user
space.

Read this:

http://mirror.linux.org.au/linux.conf.au/2005/cdrom-beta-1/linux-mando...2.4.31/

regards

Wolfgang

Ken · External Since: Jul 13, 2007 Posts: 2

On Jul 14, 3:54 am, Wolfgang Mües <wolfg....TakeThisOut@iksw-muees.de> wrote:
> Ken wrote:
> > I am writing a driver for GPIO device, gpio_int.c, and I put it under /
> > linux-2.4.x/drivers/char.
> > I need to call execve() in a function
>
> execve() is not supported inside the kernel. It is only available in user
> space.
>
> Read this:
>
> http://mirror.linux.org.au/linux.conf.au/2005/cdrom-beta-1/linux-mand...
>
> regards
>
> Wolfgang

Thank you for your advices, this problem has been solved by add a
macro before <unistd.h>
#KERNEL_CALL
#include <unistd.h>

regards,

Ken