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&gt; > > 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&gt; > --- [...] > > > +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/