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Commit cc71329b authored by Scott James Remnant's avatar Scott James Remnant Committed by Greg Kroah-Hartman
Browse files

USB: usbfs: deprecate and hide option for !embedded 



Modern systems do not use usbfs; the entries within it are files,
not device nodes, and do not support ACLs which are the default way to
provide access to USB devices to untrusted users.

It is replaced by device-nodes maintained by udev in /dev/bus/usb,
libusb uses this device nodes.

Mark the option as deprecated, and hide entirely for non-embedded builds
(which may not be using udev but require raw USB device access).

Signed-off-by: default avatarScott James Remnant <scott@canonical.com>
Acked-by: default avatarKay Sievers <kay.sievers@vrfy.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 91f8d063

drivers/usb/core/Kconfig

+10 −6
Original line number Diff line number Diff line
@@ -28,7 +28,7 @@ comment "Miscellaneous USB options" 
	depends on USB



config USB_DEVICEFS

	bool "USB device filesystem"

	bool "USB device filesystem (DEPRECATED)" if EMBEDDED

	depends on USB

	---help---

	  If you say Y here (and to "/proc file system support" in the "File
@@ -46,11 +46,15 @@ config USB_DEVICEFS 
	  For the format of the various /proc/bus/usb/ files, please read

	  <file:Documentation/usb/proc_usb_info.txt>.



	  Usbfs files can't handle Access Control Lists (ACL), which are the

	  default way to grant access to USB devices for untrusted users of a

	  desktop system. The usbfs functionality is replaced by real

	  device-nodes managed by udev. These nodes live in /dev/bus/usb and

	  are used by libusb.

	  Modern Linux systems do not use this.



	  Usbfs entries are files and not character devices; usbfs can't

	  handle Access Control Lists (ACL) which are the default way to

	  grant access to USB devices for untrusted users of a desktop

	  system.



	  The usbfs functionality is replaced by real device-nodes managed by

	  udev.  These nodes lived in /dev/bus/usb and are used by libusb.



config USB_DEVICE_CLASS

	bool "USB device class-devices (DEPRECATED)"