Commit graph

24 commits

Author SHA1 Message Date
Hai Zhang
f301cd299b Add policies for permission APEX data directory.
Bug: 136503238
Test: presubmit
Change-Id: I636ab95070df4c58cf2c98b395d99cb807a7f243
2020-01-16 16:08:55 -08:00
Oli Lan
91ce5b9c22 Add type for directories containing snapshots of apex data.
This adds a new apex_rollback_data_file type for the snapshots (backups)
of APEX data directories that can be restored in the event of a rollback.

Permission is given for apexd to create files and dirs in those directories
and for vold_prepare_subdirs to create the directories.

See go/apex-data-directories for details.

Bug: 141148175
Test: Built and flashed, checked directory was created with the correct
type.

Change-Id: I94b448dfc096e5702d3e33ace6f9df69f58340fd
2019-12-09 11:16:24 +00:00
Oli Lan
79b4e1af4a Add type for APEX data directories.
This adds a new apex_module_data_file type for the APEX data directories
under /data/misc/apexdata and /data/misc_[de|ce]/<u>/apexdata.

Permission is given for vold to identify which APEXes are present and
create the corresponding directories under apexdata in the ce/de user
directories.

See go/apex-data-directories.

Bug: 141148175
Test: Built & flashed, checked directories were created.
Change-Id: I95591e5fe85fc34f7ed21e2f4a75900ec2cfacfa
2019-12-09 11:14:38 +00:00
Roshan Pius
d804a76d03 Revert "sepolicy: Permission changes for new wifi mainline module"
This reverts commit 3aa1c1725e.

Reason for revert: Wifi services no longer plan to be a separate
APK/process for mainline. Will instead become a jar loaded from Apex.

Bug: 144722612
Test: Device boots up & connects to wifi networks
Change-Id: Ifa33dae971dccfd5d14991727e2f27d2398fdc74
2019-11-22 09:49:32 -08:00
Roshan Pius
3aa1c1725e sepolicy: Permission changes for new wifi mainline module
Move wifi services out of system_server into a separate APK/process.

Changes:
a) Created sepolicy for the new wifi apk.
b) The new APK will run with network_stack uid (eventually will be moved
to the same process).

Used 'audit2allow' tool to gather list of permissions required.

Note: The existing wifi related permissions in system_server is left
behind to allow the module to be loaded into system_server or
network_stack process depending on device configuration.

Bug: 113174748
Test: Device boots up and able to make wifi connection.
Test: Tested hotspot functionality.
Test: Ran WifiManagerTest & WifiSoftApTest ACTS tests locally.
Test: Will send for wifi regression tests.
Change-Id: Id19643a235bf0c28238f2729926b893ac2025b97
(cherry-picked from c7aa90091e6bec70a31a643cc4519a9a86fb0b38)
2019-07-16 13:30:15 -07:00
Joel Galenson
5d5ac9ad6e Dontaudit unneeded denials.
These denials are intermittent and unnecessary.  Hide them while we
investigate how to properly fix the issue.

Bug: 131096543
Bug: 132093726
Test: Build
Change-Id: I1950c10a93d183c19c510f869419fcfccd5006d2
(cherry picked from commit 654ceeb93f)
2019-05-10 08:14:54 -07:00
Nick Kralevich
9097360049 Revert "Temporarily hide denial to fix tests."
This reverts commit 94b5fe4af5.

Reason for revert: Obsoleted by https://android-review.googlesource.com/933916

Bug: 129298168
Change-Id: I6b34cfdf76b5094db17ee06831d8a662ea360956
Test: Build.
2019-03-27 13:56:20 +00:00
Joel Galenson
94b5fe4af5 Temporarily hide denial to fix tests.
This shoud be removed once the offending code is fixed.

Bug: 129298168
Test: Build.
Change-Id: Ie94a626be777a094fb587f72b3987994e085a23e
2019-03-25 17:37:51 -07:00
Annie Meng
4c3d11c018 Add rules for multi-user backup/restore
The backup system service will move its storage location to per-user CE
directories to support multiple users. Add additional iterations on the
existing rules to support the new location.

/data/backup -> /data/system_ce/[user id]/backup
Previously covered by rule backup_data_file

/cache/backup -> /data/system_ce/[user id]/backup_stage
Previously covered by rule cache_backup_file

Also add support for vold to create and perform restorecon on the new
locations.

Example denials and detailed proposal in the doc on the linked bug.

Bug: 121197420
Test: 1) Boot device; check dirs created with correct label; run backup
successfully on system user
2) Create secondary user; check dirs created with correct label; run
backup successfully

Change-Id: I47faa69cd2a6ac55fb762edbf366a86d3b06ca77
2019-01-17 12:53:08 +00:00
Narayan Kamath
2ad229c788 Add initial sepolicy for app data snapshots.
Define a rollback_data_file label and apply it to the snapshots
directory. This change contains just enough detail to allow
vold_prepare_subdirs to prepare these directories correctly.

A follow up change will flesh out the access policy on these
directories in more detail.

Test: make, manual
Bug: 112431924

Change-Id: I4fa7187d9558697016af4918df6e34aac1957176
2019-01-16 15:22:51 +00:00
Kevin Chyn
91c2580bce Add placeholder iris and face policy for vold data directory
This is PS1 of aosp/828283 which was reverted. Using PS1 shouldn't cause
the same issue.

Test: vold is able to create directories, ag/5534962

Bug: 116528212
Change-Id: I84aca49a8dae0a087498120780dea0962aca04b3
2018-11-30 11:37:19 -08:00
Nick Kralevich
83f25e26f9 Revert "Add placeholder iris and face policy for vold data directory"
This reverts commit 92bde4b941.

Reason for revert: Rebooting after OTA fails due to the
filesystem still seeing the old label on the device.

Bug: 116528212
Bug: 119747564
Change-Id: Ib5f920f85c7e305e89c377369dca038d2c6c738c
Test: rollback change
2018-11-19 15:00:19 -08:00
Kevin Chyn
92bde4b941 Add placeholder iris and face policy for vold data directory
Test: vold is able to create directories, ag/5534962

Bug: 116528212

Change-Id: I61dd8802c13b1c42d334a80b678ca6a877848fc2
2018-11-15 17:32:03 -08:00
Benjamin Gordon
342362ae3e sepolicy: grant dac_read_search to domains with dac_override
kernel commit 2a4c22426955d4fc04069811997b7390c0fb858e (fs: switch order
of CAP_DAC_OVERRIDE and CAP_DAC_READ_SEARCH checks) swapped the order of
dac_override and dac_read_search checks.  Domains that have dac_override
will now generate spurious denials for dac_read_search unless they also
have that permission.  Since dac_override is a strict superset of
dac_read_search, grant dac_read_search to all domains that already have
dac_override to get rid of the denials.

Bug: 114280985
Bug: crbug.com/877588
Test: Booted on a device running 4.14.
Change-Id: I5c1c136b775cceeb7f170e139e8d4279e73267a4
2018-09-19 15:54:37 -06:00
Andreas Huber
4d6a5e8700 Fingerprint data is now stored in one of two ways depending on the
shipping API version:

For devices shipped on O-MR1 nothing changes, data is stored
under /data/system/users/<user-id>/fpdata/...

Devices shipped from now on will instead store fingerprint data under
/data/vendor_de/<user-id>/fpdata.

Support for /data/vendor_de and /data/vendor_ce has been added to vold.

Bug: 36997597
Change-Id: Ibc7cc33b756f64abe68a749c0ada0ca4f6d92514
Merged-In: Ibc7cc33b756f64abe68a749c0ada0ca4f6d92514
Test: manually
(cherry picked from commit 6116daa71a)
2018-05-16 14:22:14 -07:00
Paul Crowley
8096639792 Allow vold_prepare_subdirs to delete more files.
Bug: 78591623
Test: Create a new user with a fingerprint. Reboot. Delete that user.
    Check for denials, files left over in /data/*_{c,d}e/10
Merged-In: Ib818e112a98c5b954ee829e93ebd69c3b12940cf
Change-Id: Ib818e112a98c5b954ee829e93ebd69c3b12940cf
2018-04-26 15:26:11 -07:00
Joel Galenson
254a872cab Let vold_prepare_subdirs completely clean deleted user data.
After adding a new user, deleting it, and rebooting, some of the user's data still remained.  This adds the SELinux permissions necessary to remove all of the data.  It fixes the followign denials:

avc: denied { rmdir } for scontext=u:r:vold_prepare_subdirs:s0 tcontext=u:object_r:system_data_file:s0 tclass=dir
avc: denied { unlink } for scontext=u:r:vold_prepare_subdirs:s0 tcontext=u:object_r:system_data_file:s0 tclass=file

Bug: 74866238
Test: Create user, delete user, reboot user, see no denials or
leftover data.

Change-Id: Ibc43bd2552b388a9708bf781b5ad206f21df62dc
2018-04-16 16:39:43 -07:00
Joel Galenson
fc870ce954 Allow some vold_prepare_subdirs denials.
This addresses the following denials:

avc: denied { fowner } for comm="rm" scontext=u:r:vold_prepare_subdirs:s0 tcontext=u:r:vold_prepare_subdirs:s0 tclass=capability
avc: denied { getattr } for comm="rm" scontext=u:r:vold_prepare_subdirs:s0 tcontext=u:object_r:storaged_data_file:s0 tclass=file
avc: denied { relabelfrom } for comm="vold_prepare_su" name="storaged" scontext=u:r:vold_prepare_subdirs:s0 tcontext=u:object_r:system_data_file:s0 tclass=dir
avc: denied { getattr } for comm="rm" scontext=u:r:vold_prepare_subdirs:s0 tcontext=u:object_r:system_data_file:s0 tclass=file

Bug: 77875245
Test: Boot device.
Test: Mislabel directories used by vold_prepare_subdirs, reboot, and
ensure it can relabel them without denials.
Test: Add user, reboot, delete user, reboot, observe no denials.

(cherry picked from commit 855dd5a856)

Merged-In: Id67bc99f151a6ccb9619bbfb7080452956405121
Change-Id: I2f6b5abfaf81570d03a30f2edf7296b5afd10c9b
2018-04-13 09:47:58 -07:00
Jeff Vander Stoep
d25ccabd24 label /data/vendor{_ce,_de}
Restrictions introduced in vendor init mean that new devices
may not no longer exempt vendor init from writing to system_data_file.
This means we must introduce a new label for /data/vendor which
vendor_init may write to.

Bug: 73087047
Test: build and boot Taimen and Marlin. Complete SUW, enroll fingerprint
    No new denials.

Change-Id: I65f904bb28952d4776aab947515947e14befbe34
2018-02-08 17:21:25 +00:00
Jeff Vander Stoep
bdbdb0f25f vold_prepare_subdirs: grant chown
Addresses:
avc: denied { chown } for comm="vold_prepare_su" capability=0
scontext=u:r:vold_prepare_subdirs:s0
tcontext=u:r:vold_prepare_subdirs:s0 tclass=capability

Bug: 71796118
Test: build
Change-Id: I64b2f1ad8d6e0748c5820b8a37a4fc4f4101d1fb
2018-01-10 08:37:42 -08:00
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
Paul Crowley
5850a2ae6b Move most of public/vold_prepare_subdirs.te to private
AIUI permissions should be in private unless they need to be public.

Bug: 25861755
Test: Boot device, create and remove a user, observe logs
Change-Id: I6c3521d50dab2d508fce4b614d51e163e7c8f3da
2017-10-25 13:06:25 -07:00
Jin Qian
c0125335e5 allow vold_prepare_subdirs to create storaged directories
Test: Boot device, observe logs
Bug: 63740245
Change-Id: I1068304b12ea90736b7927b7368ba1a213d2fbae
2017-10-23 11:34:47 -07:00
Paul Crowley
5b962cfd7b vold_prepare_subdirs sets policy in vold-created dirs.
Bug: 25861755
Test: Boot device, observe logs
Change-Id: I6c13430d42e9794003eb48e6ca219b874112b900
Merged-In: I6c13430d42e9794003eb48e6ca219b874112b900
(cherry picked from commit 47f3ed09d2)
2017-10-17 10:17:20 -07:00