Messages in this thread | | | Date | Sun, 12 Jun 2011 14:12:23 +0300 | From | Alexey Dobriyan <> | Subject | Re: [RFC] procfs: add hidepid and hidenet modes |
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On Sun, Jun 12, 2011 at 11:51:01AM +0400, Vasiliy Kulikov wrote: > hidenet means /proc/PID/net will be accessible to processes with > CAP_NET_ADMIN capability or to members of a special group. > > gid=XXX defines a group that will be able to gather all processes' info > and network connections info. > > Similar features are implemented for old kernels in -ow patches (for > Linux 2.2 and 2.4) and for Linux 2.6 in -grsecurity (but both of them > are implemented as configure options, not cofigurable in runtime). > > > In current version hidenet works for CONFIG_NET_NS=y via creating a > "fake" net namespace and slipping it to nonauthorized users, resulting > in users observing blank net files (like nobody use the network). If > CONFIG_NET_NS=n I don't see anything better than just fully denying > access to /proc/<pid>/net. More elegant ideas are welcome.
This fake netns concept is ugly. If you wan't deny something, why don't you return -E?
Regardless, these should be separate patch from PID stuff.
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