[Qemu-devel] [Bug 156085] Re: Could not open /proc/bus/usb/devices

[Rolf Leggewie]

Hardy has seen the end of its life and is no longer receiving any
updates. Marking the Hardy task for this ticket as "Won't Fix".

** Changed in: qemu (Ubuntu Hardy)
       Status: Confirmed => Won't Fix

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Title:
  Could not open /proc/bus/usb/devices

Status in QEMU:
  Fix Released
Status in Virtualbox:
  Fix Released
Status in “apcupsd” package in Ubuntu:
  Invalid
Status in “fxload” package in Ubuntu:
  Fix Released
Status in “kvm” package in Ubuntu:
  Fix Released
Status in “madfuload” package in Ubuntu:
  Fix Released
Status in “midisport-firmware” package in Ubuntu:
  Fix Released
Status in “qemu” package in Ubuntu:
  Fix Released
Status in “sysvinit” package in Ubuntu:
  Won't Fix
Status in “usbview” package in Ubuntu:
  Triaged
Status in “vmware-server” package in Ubuntu:
  Invalid
Status in “apcupsd” source package in Gutsy:
  Invalid
Status in “fxload” source package in Gutsy:
  Won't Fix
Status in “kvm” source package in Gutsy:
  Won't Fix
Status in “madfuload” source package in Gutsy:
  Won't Fix
Status in “midisport-firmware” source package in Gutsy:
  Won't Fix
Status in “qemu” source package in Gutsy:
  Won't Fix
Status in “sysvinit” source package in Gutsy:
  Invalid
Status in “usbview” source package in Gutsy:
  Won't Fix
Status in “vmware-server” source package in Gutsy:
  Won't Fix
Status in “apcupsd” source package in Hardy:
  Invalid
Status in “fxload” source package in Hardy:
  Won't Fix
Status in “kvm” source package in Hardy:
  Won't Fix
Status in “madfuload” source package in Hardy:
  Won't Fix
Status in “midisport-firmware” source package in Hardy:
  Won't Fix
Status in “qemu” source package in Hardy:
  Won't Fix
Status in “sysvinit” source package in Hardy:
  Won't Fix
Status in “usbview” source package in Hardy:
  Won't Fix
Status in “vmware-server” source package in Hardy:
  Won't Fix
Status in “apcupsd” source package in Jaunty:
  Invalid
Status in “fxload” source package in Jaunty:
  Fix Released
Status in “kvm” source package in Jaunty:
  Fix Released
Status in “madfuload” source package in Jaunty:
  Fix Released
Status in “midisport-firmware” source package in Jaunty:
  Fix Released
Status in “qemu” source package in Jaunty:
  Fix Released
Status in “sysvinit” source package in Jaunty:
  Won't Fix
Status in “usbview” source package in Jaunty:
  Won't Fix
Status in “vmware-server” source package in Jaunty:
  Invalid
Status in “usbview” package in Debian:
  Fix Released
Status in “qemu” package in openSUSE:
  Fix Released

Bug description:
  On Gutsy 64-bit using qemu/kvm  (also VirtualBox and, I believe,
  VMWare) and the "-usb" switch no USB devices are available since
  qemu/kvm looks for the description of them in the 'devices' file of a
  usbfs mount at

  /proc/bus/usb/

  but the code previously providing the usbfs mount that is created at
  start-up via /etc/rcS/S11mountdevsubfs.sh -->
  /etc/init.d/mountdevsubfs.sh was commented out. The USB devices are
  now reported at

  /dev/bus/usb/

  but currently there is no usbfs file-system mounted/linked there to
  provide the 'devices' text-file.

  qemu/kvm reports:

  qemuctl -qemu vdeq kvm  -boot c -m 512 -hda /home/all/VirtualMachines
  /WindowsXP-SP2.ovl -net nic,vlan=0 -soundhw es1370 -usb -net vde

  info usbhost
  Could not open /proc/bus/usb/devices

  $ ls -l /proc/bus/usb
  total 0

  
  WORKAROUND:
  To re-enable it edit the file '/etc/init.d/mountdevsubfs.sh' and uncomment 
the code after line 40 so it reads:
   # Magic to make /proc/bus/usb work
    #
    mkdir -p /dev/bus/usb/.usbfs
    domount usbfs "" /dev/bus/usb/.usbfs 
-obusmode=0700,devmode=0600,listmode=0644
    ln -s .usbfs/devices /dev/bus/usb/devices
    mount --rbind /dev/bus/usb /proc/bus/usb
  Execute the script manually to enable the change before a system reboot:
  $ sudo /etc/init.d/mountdevsubfs.sh start

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