[libvirt] [PATCH] LXC: Fix virLXCControllerSetupDevPTS() wrt user namespaces

[chenhanxiao at cn.fujitsu.com]

> -----Original Message-----
> From: libvir-list-bounces at redhat.com [mailto:libvir-list-bounces at redhat.com]
> On Behalf Of Richard Weinberger
> Sent: Tuesday, July 29, 2014 4:59 AM
> To: libvir-list at redhat.com
> Cc: Richard Weinberger; david at sigma-star.at
> Subject: [libvirt] [PATCH] LXC: Fix virLXCControllerSetupDevPTS() wrt user
> namespaces
> 
> The gid value passed to devpts has to be translated by hand as
> virLXCControllerSetupDevPTS() is called before setting up the user
> and group mappings.
> Otherwise devpts will use an unmapped gid and openpty()
> will fail within containers.
> Linux commit commit 23adbe12
> ("fs,userns: Change inode_capable to capable_wrt_inode_uidgid")
> uncovered that issue.
> 
> Signed-off-by: Richard Weinberger <richard at nod.at>

Reviewed-by: Chen Hanxiao <chenhanxiao at cn.fujitsu.com>