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author | Michael Tokarev <mjt@tls.msk.ru> | 2009-02-03 07:34:56 (GMT) |
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committer | David S. Miller <davem@davemloft.net> | 2009-02-03 07:34:56 (GMT) |
commit | 1bded710a574f20d41bc9e7fb531301db282d623 (patch) | |
tree | 02153d39ee525edaee35953c663926cb57075757 /include/linux/slab_def.h | |
parent | 1a5645bc901aea6f3f446888061b2b084bbf1ba6 (diff) | |
download | linux-fsl-qoriq-1bded710a574f20d41bc9e7fb531301db282d623.tar.xz |
tun: Check supplemental groups in TUN/TAP driver.
Michael Tokarev wrote:
[]
> 2, and this is the main one: How about supplementary groups?
>
> Here I have a valid usage case: a group of testers running various
> versions of windows using KVM (kernel virtual machine), 1 at a time,
> to test some software. kvm is set up to use bridge with a tap device
> (there should be a way to connect to the machine). Anyone on that group
> has to be able to start/stop the virtual machines.
>
> My first attempt - pretty obvious when I saw -g option of tunctl - is
> to add group ownership for the tun device and add a supplementary group
> to each user (their primary group should be different). But that fails,
> since kernel only checks for egid, not any other group ids.
>
> What's the reasoning to not allow supplementary groups and to only check
> for egid?
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/slab_def.h')
0 files changed, 0 insertions, 0 deletions