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LXC: move the comments to the proper place

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The comments is for virLXCControllerSetupPrivateNS.

Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com>
This commit is contained in:
Gao feng 2013-05-20 18:12:19 +08:00 committed by Eric Blake
parent 2a3466fafb
commit 7adfda0d6d
1 changed files with 21 additions and 20 deletions
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41
src/lxc/lxc_controller.c
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@ -1259,6 +1259,27 @@ virLXCControllerSetupPrivateNS(void)
{
int ret = -1;
/*
* If doing a chroot style setup, we need to prepare
* a private /dev/pts for the child now, which they
* will later move into position.
*
* This is complex because 'virsh console' needs to
* use /dev/pts from the host OS, and the guest OS
* needs to use /dev/pts from the guest.
*
* This means that we (libvirt_lxc) need to see and
* use both /dev/pts instances. We're running in the
* host OS context though and don't want to expose
* the guest OS /dev/pts there.
*
* Thus we call unshare(CLONE_NS) so that we can see
* the guest's new /dev/pts, without it becoming
* visible to the host OS. We also put the root FS
* into slave mode, just in case it was currently
* marked as shared
*/
if (unshare(CLONE_NEWNS) < 0) {
virReportSystemError(errno, "%s",
_("Cannot unshare mount namespace"));
@ -1287,26 +1308,6 @@ virLXCControllerSetupDevPTS(virLXCControllerPtr ctrl)
VIR_DEBUG("Setting up private /dev/pts");
/*
* If doing a chroot style setup, we need to prepare
* a private /dev/pts for the child now, which they
* will later move into position.
*
* This is complex because 'virsh console' needs to
* use /dev/pts from the host OS, and the guest OS
* needs to use /dev/pts from the guest.
*
* This means that we (libvirt_lxc) need to see and
* use both /dev/pts instances. We're running in the
* host OS context though and don't want to expose
* the guest OS /dev/pts there.
*
* Thus we call unshare(CLONE_NS) so that we can see
* the guest's new /dev/pts, without it becoming
* visible to the host OS. We also put the root FS
* into slave mode, just in case it was currently
* marked as shared
*/
mount_options = virSecurityManagerGetMountOptions(ctrl->securityManager,
ctrl->def);