This usage under /dev/.udev has been unused for a very long time and
replaced by functionality in /run/udev. Since these have separate types,
take this opportunity to revoke these likely unnecessary rules.
Fixes#221
Derived from Laurent Bigonville's work in #230
Signed-off-by: Chris PeBenito <pebenito@ieee.org>
When SECMARK or Netlabel packet labeling is used, it's useful to
forbid receiving and sending unlabeled packets. If packet labeling is
not active, there's no effect.
Signed-off-by: Topi Miettinen <toiwoton@gmail.com>
When using network namespaces with `ip netns`, command `ip` creates
files in `/run/netns` that are mountpoints for `nsfs`. For example:
$ ip netns add VPN
$ ls -Z /run/netns/VPN
system_u:object_r:nsfs_t /run/netns/VPN
$ findmnt /run/netns/VPN
TARGET SOURCE FSTYPE OPTIONS
/run/netns/VPN nsfs[net:[4026532371]] nsfs rw
/run/netns/VPN nsfs[net:[4026532371]] nsfs rw
From a shell CLI, it is possible to retrieve the name of the current
network namespace:
$ ip netns exec VPN bash
$ ip netns identify $$
VPN
This requires reading `/proc/$PID/ns/net`, which is labelled as a user
domain. Allow this access using `userdom_read_all_users_state()`.
Signed-off-by: Nicolas Iooss <nicolas.iooss@m4x.org>
Remove unused permission definitions from SELinux.
Many of these were only ever used in pre-mainline
versions of SELinux, prior to Linux 2.6.0. Some of them
were used in the legacy network or compat_net=1 checks
that were disabled by default in Linux 2.6.18 and
fully removed in Linux 2.6.30.
The corresponding classmap declarations were removed from the
mainline kernel in:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=42a9699a9fa179c0054ea3cf5ad3cc67104a6162
Permissions never used in mainline Linux:
file swapon
filesystem transition
tcp_socket { connectto newconn acceptfrom }
node enforce_dest
unix_stream_socket { newconn acceptfrom }
Legacy network checks, removed in 2.6.30:
socket { recv_msg send_msg }
node { tcp_recv tcp_send udp_recv udp_send rawip_recv rawip_send dccp_recv dccp_send }
netif { tcp_recv tcp_send udp_recv udp_send rawip_recv rawip_send dccp_recv dccp_send }
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
Remove complement (~) and wildcard (*) in allow rules so that there are no
unintentional additions when new permissions are declared.
This patch does not add or remove permissions from any rules.
Here's the latest version of my patch to remove all /var/run when it's not
needed. I have removed the subst thing from the patch, but kept a
distro_debian bit that relies on it. So with this patch the policy won't
install if you build it with distro_debian unless you have my subst patch.
Chris, if your automated tests require that it build and install with
distro_debian then skip the patch for sysnetwork.fc.
From Russell Coker
Chris PeBenito
Russell Coker
Yi Zhao
Topi Miettinen
Nicolas Iooss
Stephen Smalley
cgzones