On Fre, 2010-05-21 at 12:18 +0200, Jason Nymble wrote:
> On 21 May 2010, at 12:08 PM, Jason Nymble wrote:
> > On 21 May 2010, at 12:07 PM, Jason Nymble wrote:
> >
> >> Is there a way (e.g. exported variable or kernel API) for a kernel module to obtain the linux kernel command line? i.e. the contents as seen from userspace by 'cat /proc/cmdline'
> >
> > I see linux/init.h has:
> > extern char __initdata boot_command_line[];
> >
> > Will try that...
>
> Does not work, neither does saved_command_line, presumably because neither of them are exported (get "Unknown symbol in module" when loading the module)... linux/fs/proc/cmdline.c provides /proc/cmdline, and that just prints saved_command_line variable, but presumably it can use that variable since its not dynamically loaded kernel module.
>
> Any bright ideas?
Why do you want to look at the kernel commandline in the first place?
Module parameters come at module loading time.
Other than that the not-so-bright "idea": Send a patch to export
saved_command_line (including a good reason to export it to modules) to
LKML and see what people say to it.
Bernd
--
Bernd Petrovitsch Email : bernd@xxxxxxxxxxxxxxxxxxx
LUGA : http://www.luga.at
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