AID_SHARED_GID is a GID shared by a specific app across all users on
the same device. Bring the UserHandle and multiuser.c implementations
into agreement, and copy/paste the unit tests that verify that both
behave identically.
This fixes a regression where multiuser_get_shared_gid() was applying
per-user isolation when it shouldn't have.
Test: adb shell /data/nativetest64/libcutils_test/libcutils_test64
Bug: 34151068, 64548938
Change-Id: I491dd79d23a214425a68865d1d0f8269916aad4c
We can't reuse the GID range for internal cache files, otherwise
we don't have a way to tease apart the difference when deciding if
it's safe to move apps.
Test: builds, boots
Bug: 37193650
Change-Id: I22c4e575cd557636e74c5c73035adb1d4dcbb7f7
gid_t and uid_t are unsigned ints, so we need to compare against unsigned
constants.
Bug: 26936282
Test: mmm system/core/libcutils/tests
Test: adb shell /data/nativetest/libcutils_test/libcutils_test32 \
--gtest_filter=MultiuserTest.* (on hikey)
Test: adb shell /data/nativetest64/libcutils_test/libcutils_test64 \
--gtest_filter=MultiuserTest.* (on hikey)
Change-Id: Ic4c8a137e3f37cb5e95ba925814f201cfd5a06b0
Signed-off-by: Greg Hackmann <ghackmann@google.com>
To quickly answer the question of "how much data is a UID using?" we
need a GID range to label files on external storage, similar to
the GID ranges already defined for cached and shared data.
Also define a new GID that will be used to label the OBB files shared
between all users under /data/media/obb.
Test: builds, newly added tests pass
Bug: 34263266
Change-Id: I16fb7d166c3dcdeafbf477162d191d3b73ae8ac2
To support upcoming disk usage calculation optimizations, this change
creates a new GID for each app that will be used to mark its cached
data. We're allocating these unique GIDs so that we can use
quotactl() to track cached data on a per-app basis.
This change also tightens up the implementation of both the cache
and shared GID calculation to ensure that they stay inside the valid
ranges, and includes tests to verify.
Test: builds, boots, tests pass
Bug: 27948817
Change-Id: Ie4377e5aae267f2da39a165888139228995987cb
Jeff Sharkey
Greg Hackmann