Find vlanid with non-root user

Find vlanid with non-root user

[Amador Pahim]

Hello,

Is there a way to get vlanid from a vlan interface as a regular user?
Default permissions to /proc/net/vlan/ is 600.
-rw-------. 1 root root 0 Aug 13 17:23 /proc/net/vlan/eth1.10-fcoe

Not sure if deducting vlanid from vlan name is a reasonable way to do so.

Thank you in advance,.

Best Regards,
-- 
Pahim

Re: Find vlanid with non-root user

[Stephen Hemminger]

On Tue, 13 Aug 2013 17:46:45 -0300
Amador Pahim <amador@pahim.org> wrote:

> Hello,
> 
> Is there a way to get vlanid from a vlan interface as a regular user?
> Default permissions to /proc/net/vlan/ is 600.
> -rw-------. 1 root root 0 Aug 13 17:23 /proc/net/vlan/eth1.10-fcoe

ip command will work as non-root user and show vlan (with -d)

$ ip -d li show dev eth0vlan
13: eth0vlan@eth0: <BROADCAST,MULTICAST,M-DOWN> mtu 1500 qdisc noop state DOWN mode DEFAULT 
    link/ether 10:bf:48:84:6f:5a brd ff:ff:ff:ff:ff:ff
    vlan id 10 <REORDER_HDR>



> Not sure if deducting vlanid from vlan name is a reasonable way to do so.

No. Vlan can be made with any name.

# ip li add link eth0 name eth0vlan type vlan id 10

> Thank you in advance,.
> 
> Best Regards,

Re: Find vlanid with non-root user

[Amador Pahim]

Thank you Stephen.

And about to find vlans? Is the same "ip -d link show" the best way?
If yes, any concern in finding interfaces with "@":

# ip -d link show | egrep ":.*@.*:" | cut -d ":" -f 2
 eth1.10-fcoe@eth1
 new_vlan@eth1
 eth1.new_vlan@eth1
 new_vlan2@eth1

For now I am using /sys/class/net/*.*, but as you said before, vlan
can be made with any name.

Best.

On Tue, Aug 13, 2013 at 6:46 PM, Stephen Hemminger
<stephen@networkplumber.org> wrote:
> On Tue, 13 Aug 2013 17:46:45 -0300
> Amador Pahim <amador@pahim.org> wrote:
>
>> Hello,
>>
>> Is there a way to get vlanid from a vlan interface as a regular user?
>> Default permissions to /proc/net/vlan/ is 600.
>> -rw-------. 1 root root 0 Aug 13 17:23 /proc/net/vlan/eth1.10-fcoe
>
> ip command will work as non-root user and show vlan (with -d)
>
> $ ip -d li show dev eth0vlan
> 13: eth0vlan@eth0: <BROADCAST,MULTICAST,M-DOWN> mtu 1500 qdisc noop state DOWN mode DEFAULT
>     link/ether 10:bf:48:84:6f:5a brd ff:ff:ff:ff:ff:ff
>     vlan id 10 <REORDER_HDR>
>
>
>
>> Not sure if deducting vlanid from vlan name is a reasonable way to do so.
>
> No. Vlan can be made with any name.
>
> # ip li add link eth0 name eth0vlan type vlan id 10
>
>> Thank you in advance,.
>>
>> Best Regards,
>



-- 
Pahim