On Thu, 06 Jun 2019 10:45:23 -0700 Adam Williamson <adamwill@xxxxxxxxxxxxxxxxx> wrote: > On Thu, 2019-06-06 at 11:15 -0600, Chris Murphy wrote: > > On Thu, Jun 6, 2019 at 9:49 AM Richard Ryniker > > <ryniker@xxxxxxxxxxxx> wrote: > > > I think you will find the file is not truly empty. /sys is not > > > an actual file system, merely an interface to kernel > > > information. There is no directory structure that records the > > > length or other attributes of a file, as is the case for data on > > > real media such as disks. > > > > > > If you read the /sys/kernel/debug/usb/devices file, you should > > > find the data you seek. > > > > [root@fmac ~]# ls -l /sys/kernel/debug/usb/devices > > -r--r--r--. 1 root root 0 Jun 6 10:11 /sys/kernel/debug/usb/devices > > [root@fmac ~]# cat /sys/kernel/debug/usb/devices > > cat: /sys/kernel/debug/usb/devices: Operation not permitted > > [root@fmac ~]# > > > > 5.2.0-0.rc3.git1.1.fc31.x86_64 > > Try it with enforcing=0 ? it's https://bugzilla.redhat.com/show_bug.cgi?id=1658675 I suppose, need to ping the kernel team ... Dan _______________________________________________ test mailing list -- test@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to test-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://getfedora.org/code-of-conduct.html List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/test@xxxxxxxxxxxxxxxxxxxxxxx
