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7 commits

Author SHA1 Message Date
Hridya Valsaraju
498318cc65 Revert "Revert "Exclude vendor_modprobe from debugfs neverallow restrictions""
This reverts commit 231c04b2b9.

Now that b/186727553 is fixed, it should be safe to revert this revert.

Test: build
Bug: 184381659
Change-Id: If26ba23df19e9854a121bbcf10a027c738006515
2021-05-04 22:07:08 -07:00
Hridya Valsaraju
231c04b2b9 Revert "Exclude vendor_modprobe from debugfs neverallow restrictions"
Revert submission 1668411

Reason for revert: Suspect for b/186173384
Reverted Changes:
Iaa4fce9f0:Check that tracefs files are labelled as tracefs_t...
I743a81489:Exclude vendor_modprobe from debugfs neverallow re...
I63a22402c:Add neverallows for debugfs access
I289f2d256:Add a neverallow for debugfs mounting

Change-Id: I04f8bfdc0e5fe8d2f7d6596ed7b840332d611485
2021-04-23 16:38:20 +00:00
Hridya Valsaraju
4b6d50dcb4 Exclude vendor_modprobe from debugfs neverallow restrictions
vendor_modprobe loads kernel modules which may create files in
debugfs during module_init().

Bug: 179760914
Test: build
Change-Id: I743a81489f469d52f94a88166f8583a7d797db16
2021-04-21 14:13:41 -07:00
Mark Salyzyn
c86d3886ab modprobe: add -s/--syslog flag
There is a desire to ensure that modprobe as a service can log to
kmesg to help triage issues, so add support for the -s or --syslog
flag to do so.

Bug: 159424228
Bug: 151950334
Test: use modprobe as a service to load modules, check logs
Change-Id: I884995f364b0fc604861797eb90d7225a372f864
2020-06-25 11:30:24 -07:00
Steve Muckle
e3788c93e5 allow modprobe to read /proc/cmdline
This is needed for libmodprobe to pass module options on the kernel
commandline to kernel modules when they are loaded.

Bug: 155422904
Change-Id: I9df7e211765268815bfb9269365264f5ca468712
2020-05-05 08:50:11 -07:00
Benjamin Gordon
9b2e0cbeea sepolicy: Add rules for non-init namespaces
In kernel 4.7, the capability and capability2 classes were split apart
from cap_userns and cap2_userns (see kernel commit
8e4ff6f228e4722cac74db716e308d1da33d744f). Since then, Android cannot be
run in a container with SELinux in enforcing mode.

This change applies the existing capability rules to user namespaces as
well as the root namespace so that Android running in a container
behaves the same on pre- and post-4.7 kernels.

This is essentially:
  1. New global_capability_class_set and global_capability2_class_set
     that match capability+cap_userns and capability2+cap2_userns,
     respectively.
  2. s/self:capability/self:global_capability_class_set/g
  3. s/self:capability2/self:global_capability2_class_set/g
  4. Add cap_userns and cap2_userns to the existing capability_class_set
     so that it covers all capabilities.  This set was used by several
     neverallow and dontaudit rules, and I confirmed that the new
     classes are still appropriate.

Test: diff new policy against old and confirm that all new rules add
      only cap_userns or cap2_userns;
      Boot ARC++ on a device with the 4.12 kernel.
Bug: crbug.com/754831

Change-Id: I4007eb3a2ecd01b062c4c78d9afee71c530df95f
2017-11-21 08:34:32 -07:00
Sandeep Patil
e41af20397 Fix coredomain violation for modprobe
modprobe domain was allowed to launch vendor toolbox even if its a
coredomain. That violates the treble separation. Fix that by creating a
separate 'vendor_modprobe' domain that init is allowed to transition to
through vendor_toolbox.

Bug: 37008075
Test: Build and boot sailfish

Change-Id: Ic3331797691bb5d1fdc05a674aa4aa313e1f86b2
Signed-off-by: Sandeep Patil <sspatil@google.com>
(cherry picked from commit 9e366a0e49)
2017-06-05 08:09:18 -07:00