System services differ in designed access level. Add attributes reflecting this
distinction and label services appropriately. Begin moving access to the newly
labeled services by removing them from tmp_system_server_service into the newly
made system_server_service attribute. Reflect the move of system_server_service
from a type to an attribute by removing access to system_server_service where
appropriate.
Change-Id: I7fd06823328daaea6d6f96e4d6bd00332382230b
Also formally allow dumpstate access to all services and grant system_server
access to address the following non-system_server_service entries:
avc: granted { find } for service=drm.drmManager scontext=u:r:system_server:s0 tcontext=u:object_r:drmserver_service:s0 tclass=service_manager
avc: granted { find } for service=nfc scontext=u:r:system_server:s0 tcontext=u:object_r:nfc_service:s0 tclass=service_manager
Bug: 18106000
Change-Id: Iad16b36acf44bce52c4824f8b53c0e7731c25602
Temporarily give every system_server_service its own
domain in preparation for splitting it and identifying
special services or classes of services.
Change-Id: I81ffbdbf5eea05e0146fd7fd245f01639b1ae0ef
Commit 92dfa31f78 added "seinfo=platform"
to all fixed UID domains. However, that caused problems for shared_relro.
shared_relro runs like an isolated app, and doesn't have an seinfo field
associated with it.
This causes a crash when system_server attempts to start shared_relro.
W art : PreZygoteFork called when we already have a zygote space.
E SELinux : seapp_context_lookup: No match for app with uid 1037, seinfo (null), name WebViewLoader-armeabi-v7a
E SELinux : selinux_android_setcontext: Error setting context for app with uid 1037, seinfo (null): Success
E Zygote : selinux_android_setcontext(1037, 0, "(null)", "WebViewLoader-armeabi-v7a") failed
F art : art/runtime/jni_internal.cc:508] JNI FatalError called: RuntimeAbort
I ActivityManager: Start proc WebViewLoader-armeabi-v7a [android.webkit.WebViewFactory$RelroFileCreator] for : pid=2717 uid=1037 gids={} abi=armeabi-v7a
W libbacktrace: virtual bool BacktraceThread::Unwind(size_t, ucontext_t*): tgkill 1176 failed: No such process
W libbacktrace: virtual bool BacktraceThread::Unwind(size_t, ucontext_t*): tgkill 1176 failed: No such process
F art : art/runtime/runtime.cc:331] Runtime aborting...
F art : art/runtime/runtime.cc:331] Aborting thread:
F art : art/runtime/runtime.cc:331] "main" prio=5 tid=1 Native
F art : art/runtime/runtime.cc:331] | group="" sCount=0 dsCount=0 obj=0x7298f000 self=0xb4827800
F art : art/runtime/runtime.cc:331] | sysTid=1176 nice=0 cgrp=default sched=0/0 handle=0xb6f22d80
F art : art/runtime/runtime.cc:331] | state=? schedstat=( 0 0 0 ) utm=0 stm=0 core=0 HZ=100
F art : art/runtime/runtime.cc:331] | stack=0xbe39d000-0xbe39f000 stackSize=8MB
F art : art/runtime/runtime.cc:331] | held mutexes= "abort lock" "mutator lock"(shared held)
F art : art/runtime/runtime.cc:331] kernel: (couldn't read /proc/self/task/1176/stack)
F art : art/runtime/runtime.cc:331] native: (backtrace::Unwind failed for thread 1176)
F art : art/runtime/runtime.cc:331] at com.android.internal.os.Zygote.nativeForkAndSpecialize(Native method)
F art : art/runtime/runtime.cc:331] at com.android.internal.os.Zygote.forkAndSpecialize(Zygote.java:91)
F art : art/runtime/runtime.cc:331] at com.android.internal.os.ZygoteConnection.runOnce(ZygoteConnection.java:227)
removing seinfo=platform from shared_relro fixed this bug, but then
revealed two new SELinux denials:
E SELinux : avc: denied { find } for service=webviewupdate scontext=u:r:shared_relro:s0 tcontext=u:object_r:system_server_service:s0 tclass=service_manager
E SELinux : avc: denied { find } for service=activity scontext=u:r:shared_relro:s0 tcontext=u:object_r:system_server_service:s0 tclass=service_manager
Add the needed SELinux rule.
Change-Id: I4372ccfe2e9f3d982796d2c0dc79259aa8a31810
Define a domain and appropriate access rules for shared RELRO files
(used for loading the WebView native library). Any app is permitted to
read the files as they are public data, but only the shared_relro
process is permitted to create/update them.
Bug: 13005501
Change-Id: I9d5ba9e9eedb9b8c80fe6f84a3fc85a68553d52e
