vold: temporarily re-grant access to default proc label
On Marlin/Sailfish, StorageManager tests in CTS are exposing a bug
where the /proc/<pid>/ns/mnt files for system_server are briefly
mislabeled as "proc" instead of "system_server". Resulting in the
tests failing. Temporarily re-granting access to the default label
until the labeling issue can be tracked down.
Repro steps:
cts-tradefed run commandAndExit cts-dev -m CtsOsTestCases \
-t android.os.storage.cts.StorageManagerTest
Failures:
android.os.storage.cts.StorageManagerTest#testOpenProxyFileDescriptor
fail: java.lang.IllegalStateException: command '58 appfuse mount 10065
959 0' failed with '400 58 Command failed'
android.os.storage.cts.StorageManagerTest#testOpenProxyFileDescriptor_async
fail: java.lang.IllegalStateException: command '59 appfuse mount 10065
959 1' failed with '400 59 Command failed'
android.os.storage.cts.StorageManagerTest#testOpenProxyFileDescriptor_error
fail: java.lang.IllegalStateException: command '60 appfuse mount 10065
959 2' failed with '400 60 Command failed'
From the log:
10-04 20:41:22.972 595 604 E vold : Failed to open namespace for
/proc/959/ns/mnt: Permission denied
10-04 20:41:22.967 604 604 W vold : type=1400 audit(0.0:90): avc:
denied { read } for dev="proc" ino=4026534249 scontext=u:r:vold:s0
tcontext=u:object_r:proc:s0 tclass=file permissive=0
10-04 20:41:23.051 604 604 W vold : type=1400 audit(0.0:91): avc:
denied { read } for dev="proc" ino=4026534249 scontext=u:r:vold:s0
tcontext=u:object_r:proc:s0 tclass=file permissive=0
10-04 20:41:23.054 595 604 E vold : Failed to open namespace for
/proc/959/ns/mnt: Permission denied
10-04 20:41:23.081 604 604 W vold : type=1400 audit(0.0:92): avc:
denied { read } for dev="proc" ino=4026534249 scontext=u:r:vold:s0
tcontext=u:object_r:proc:s0 tclass=file permissive=0
10-04 20:41:23.086 595 604 E vold : Failed to open namespace for
/proc/959/ns/mnt: Permission denied
sailfish:/ # ps -AZ | grep 959
u:r:system_server:s0 system 959 628 \
4557136 251500 SyS_epoll_wait 70e6df822c S system_server
The file labels appear to be correct when checked manually.
sailfish:/ # ls -lZ /proc/959/ns/
lrwxrwxrwx 1 system system u:r:system_server:s0 0 2017-10-04 17:19 mnt -> mnt:[4026534249]
lrwxrwxrwx 1 system system u:r:system_server:s0 0 2017-10-04 20:55 net -> net:[4026531906]
Bug: 67049235
Test: cts-tradefed run commandAndExit cts-dev -m CtsOsTestCases \
-t android.os.storage.cts.StorageManagerTes
Change-Id: Id4d200856c02c023c6f516e3f3bfa060e100086c
1 file changed