On 2/23/17 5:30 PM, Stephen Hemminger wrote: > On Thu, 23 Feb 2017 16:39:52 -0700 > David Ahern <d...@cumulusnetworks.com> wrote: > >> On 2/23/17 12:50 PM, Stephen Hemminger wrote: >>> Some use cases create Linux networking devices which are not intended for >>> use >>> by normal networking. This is an enhancement to ip command to hide network >>> devices starting with period (like files in normal directory). Interfaces >>> whose >>> name start with "." are not shown by default, and the -a (or -all) flag must >>> be used to show these devices. >> >> Agree that some devices need to be hidden by default -- not just from >> users but also other processes. >> >> This solution is very narrow, only affecting iproute2 users. Any other >> programs that use netlink or /proc files will continue to see those devices. > > I want solution that works broadly. And this works for sysfs already.
for 'ls' maybe, but not general walking of /sys. It does not hide devices from snmpd, from ifconfig, etc., etc. >> I started a patch a year ago that allows devices to marked as invisible >> (attribute can be toggled at any time). Invisible devices do not show up >> in netlink dumps, proc files or notifications. Netlink dumps can request >> invisible devices to be included in a link dump. While it is more >> intrusive, it is also more complete covering all of the paths in which >> the device is shows up. >> >> Also, changing the default behavior for iproute2 could break existing >> users that have such device names. > > I am less worried about this. The only people using . in name already > are probably Brocade, and they have similar thing in CLI to hide these > devices. seems like a big assumption.
