Re: [libvirt] [PATCH 3/5] qemu: build USB redirection filter qemu command line

<redirdev bus='usb' type='spicevmc'> <address type='usb' bus='0' port='4'/> </redirdev> <redirfilter> <usbdev class='0x08' vendor='0x1234' product='0xbeef' \ version='2.00' allow='yes'/> <usbdev class='-1' vendor='-1' product='-1' version='-1' allow='no'/> </redirfilter> will be converted to: -device usb-redir,chardev=charredir0,id=redir0,\ filter=0x08:0x1234:0xBEEF:0x2000:1|-1:-1:-1:-1:0,bus=usb.0,port=4 --- src/qemu/qemu_command.c | 45 +++++++++++++++++++++++++++++++++++++++++++-- src/qemu/qemu_command.h | 5 +++-- src/qemu/qemu_hotplug.c | 3 ++- 3 files changed, 48 insertions(+), 5 deletions(-)

+ if (redirfilter && redirfilter->nusbdevs) { + if (!qemuCapsGet(qemuCaps, QEMU_CAPS_USB_REDIR_FILTER)) { + virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s", + _("USB redirection filter is not " + "supported by this version of QEMU")); + goto error; + } + + virBufferAsprintf(&buf, ",filter="); + + for (i = 0; i < redirfilter->nusbdevs; i++) { + virDomainRedirFilterUsbDevDefPtr usbdev = redirfilter->usbdevs[i]; + if (usbdev->usbClass > 0) + virBufferAsprintf(&buf, "0x%02X:", usbdev->usbClass); + else + virBufferAsprintf(&buf, "-1:"); + + if (usbdev->vendor > 0) + virBufferAsprintf(&buf, "0x%04X:", usbdev->vendor); + else + virBufferAsprintf(&buf, "-1:"); + + if (usbdev->product > 0) + virBufferAsprintf(&buf, "0x%04X:", usbdev->product); + else + virBufferAsprintf(&buf, "-1:"); + + if (usbdev->version > 0) + virBufferAsprintf(&buf, "0x%04X:", usbdev->version); + else + virBufferAsprintf(&buf, "-1:");