Usage of kern_* functions in kernel
John Baldwin
jhb at freebsd.org
Thu Apr 26 19:08:44 UTC 2007
On Thursday 26 April 2007 08:08:19 am Marc Lörner wrote:
> Hello,
> I googled but found nothing about the usage of the kern_* functions
> (kern_open, kern_close, kern_pwritev, kern_preadv) that are located in
> vfs_syscalls.c
>
> When I use kern_open to open a file within the kernel, I get an error.
> When I use the normal vn_open function instead, all works well.
>
> So my question is which functions are recommended by you kernel-hackers
> for use within kernelspace?
>
> And here a second question: Is it possible to open/use the console driver in
> kernelspace within the functions mentioned above?
> If not, can you give me some pointers on where I can find this information!
kern_XXX are generally used by system calls such as alternative ABIs, etc.
--
John Baldwin
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