[Libvir] [RFC] 0 of 4 Linux Container support

Daniel P. Berrange berrange at redhat.com
Fri Mar 21 23:04:52 UTC 2008


On Fri, Mar 21, 2008 at 04:35:34PM -0400, Daniel Veillard wrote:
> On Fri, Mar 21, 2008 at 05:39:51PM +0000, Daniel P. Berrange wrote:
> > On Fri, Mar 21, 2008 at 01:29:07PM -0400, Daniel Veillard wrote:
> > > Another small issue is that I have the clone flags defined in 
> > > <linux/sched.h> but not in <sched.h> so I had to add that include
> > > to get the module to compile, lxcCheckContainerSupport() check
> > > then passes on my Fedora-8 2.6.24 kernel.
> > 
> > I filed
> > 
> > https://bugzilla.redhat.com/show_bug.cgi?id=438542
> > 
> > to request the flags are added to sched.h too, but we should just #define
> > them in the driver as we do for Xen hypervisor constants. This avoids a
> > hard dependancy between the kernel used for compile, vs running.
> 
> Is that really better than #include <linux/sched.h> ?
> That code is linux specific after all ..

Yes it is questionable, but GLibC already contains all the other CLONE_XXX
flags which are Linux specific, so I figured we might as well see if they
want to include the new ones too. In any case I figure we should #ifdef &
#define the new constants in lxc_driver.c, because many people's kernel
headers lag behind the kernel they're compiling for. It is only recent Fedora
practice to actually have the kernel headers synced to real kernel tree.

Dan.
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