Mount usbfs on linux 3.10 kernel
I did upgrade linux kernel from 2.6 to 3.10 version
In init nn 2.6 I did mount usbfs mount -t usbfs usbfs /proc/bus/usb -onodev,nosuid,noexec
To enable usbfs I did CONFIG_USB_DEVICEFS=y and CONFIG_USB_DEVICE_CLASS=y in kernel's config
but they are obsolete in 3.10 kernels
So how yo emulate usbfs on 3.10 kernel? I found the folowing topic https://bugs.launchpad.net/ubuntu/+source/linux/+bug/488274
Where is adviced to make
mount --bind /dev/bus /proc/bus
ln -s /sys/kernel/debug/usb/devices /proc/bus/usb/devices
but mount --bind /dev/bus /proc/bus says me
mount: special device /dev/bus does not exist
There is no /dev/bus at all
Does anybody have thoughts which can help me?
Answer
I had the same problem. The cause of this issue is that libusb looks in /dev/bus/usb, but recent kernels move this into sysfs under /sys/bus/usb.
What I did was ln -s /sys/bus /dev/bus to create a symlink from dev to sys so that libusb could find the usb subsystem.
Alternately, you can use a bind mount. The problem with your command is that the target mount point needs to exist before the bind mount can succeed. In this case mkdir /dev/bus.