Remove "self:process ptrace" from all SELinux enforced domains.
In general, a process should never need to ptrace itself.
We can add this back to more narrowly scoped domains as needed.
Add a bunch of neverallow assertions to netd.te, to verify that netd
never gets unexpected capabilities.
Change-Id: Ie862dc95bec84068536bb64705667e36210c5f4e
Allow netd to set ctl.* properties. Currently, mdnsd is broken because
it can't set this property.
Bug: 9777774
Change-Id: I2f32504d77b651e66e0a0067e65a5ed44b427f5a
This change does several things:
1) Restore domain.te to the version present at
cd516a3266 . This is the version
currently being distributed in AOSP.
2) Add "allow domain properties_device:file r_file_perms;" to
domain.te, to allow all domains to read /dev/__properties__ .
This change was missing from AOSP.
3) Restore netd.te to the version present at
80c9ba5267 . This is the version
currently being distributed in AOSP.
4) Remove anything involving module loading from netd.te. CTS
enforces that Android kernels can't have module loading enabled.
5) Add several new capabilities, plus data file rules, to
netd.te, since netd needs to write to files owned by wifi.
6) Add a new unconfined domain called dnsmasq.te, and allow
transitions from netd to that domain. Over time, we'll tighten up
the dnsmasq.te domain.
7) Add a new unconfined domain called hostapd.te, and allow
transitions from netd to that domain. Over time, we'll tighten up
the hostapd.te domain.
The net effect of these changes is to re-enable SELinux protections
for netd. The policy is FAR from perfect, and allows a lot of wiggle
room, but we can improve it over time.
Testing: as much as possible, I've exercised networking related
functionality, including turning on and off wifi, entering airplane
mode, and enabling tethering and portable wifi hotspots. It's quite
possible I've missed something, and if we experience problems, I
can roll back this change.
Bug: 9618347
Change-Id: I23ff3eebcef629bc7baabcf6962f25f116c4a3c0
This prevents denials from being generated by the base policy.
Over time, these rules will be incrementally tightened to improve
security.
Change-Id: I4be1c987a5d69ac784a56d42fc2c9063c402de11
