Re: [libvirt] [PATCH 10/23] Add support for USB host device passthrough with LXC
On 2012/12/01 04:26, Daniel P. Berrange wrote:
From: "Daniel P. Berrange" <berrange(a)redhat.com>
This adds support for host device passthrough with the
LXC driver. Since there is only a single kernel image,
it doesn't make sense to pass through PCI devices, but
USB devices are fine. For the latter we merely need to
make the /dev/bus/usb/NNN/MMM character device exist
in the container's /dev
Signed-off-by: Daniel P. Berrange <berrange(a)redhat.com>
---
[...]
+static int lxcContainerSetupHostdevSubsysUSB(virDomainDefPtr vmDef ATTRIBUTE_UNUSED,
+ virDomainHostdevDefPtr def
ATTRIBUTE_UNUSED,
+ const char *dstprefix ATTRIBUTE_UNUSED,
+ virSecurityManagerPtr securityDriver
ATTRIBUTE_UNUSED)
+{
+ int ret = -1;
+ char *src = NULL;
+ char *dstdir = NULL;
+ char *dstfile = NULL;
+ struct stat sb;
+ mode_t mode;
+
+ if (virAsprintf(&dstdir, "/dev/bus/usb/%03d",
+ def->source.subsys.u.usb.bus) < 0) {
better to use USB_DEVFS instead of /dev/bus/usb/