Usage of kern_* functions in kernel

[Kip Macy]

For core files and checkpoints that isn't possible.
 -Kip

On 4/27/07, John Baldwin <jhb at freebsd.org> wrote:
> On Friday 27 April 2007 02:43:16 am Marc Lörner wrote:
> > On Thursday 26 April 2007 19:49, John Baldwin wrote:
> > > 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.
> >
> > so, you would recommend using the vn_* functions instead?
>
> In general userland should open files rather than the kernel.
>
> --
> John Baldwin
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