b5ffbb7eeb
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
53 lines
2.3 KiB
Plaintext
53 lines
2.3 KiB
Plaintext
# Input selectors:
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# isSystemServer (boolean)
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# isOwner (boolean)
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# user (string)
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# seinfo (string)
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# name (string)
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# path (string)
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# sebool (string)
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# isSystemServer=true can only be used once.
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# An unspecified isSystemServer defaults to false.
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# isOwner=true will only match for the owner/primary user.
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# isOwner=false will only match for secondary users.
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# If unspecified, the entry can match either case.
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# An unspecified string selector will match any value.
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# A user string selector that ends in * will perform a prefix match.
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# user=_app will match any regular app UID.
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# user=_isolated will match any isolated service UID.
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# All specified input selectors in an entry must match (i.e. logical AND).
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# Matching is case-insensitive.
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#
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# Precedence rules:
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# (1) isSystemServer=true before isSystemServer=false.
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# (2) Specified isOwner= before unspecified isOwner= boolean.
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# (3) Specified user= string before unspecified user= string.
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# (4) Fixed user= string before user= prefix (i.e. ending in *).
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# (5) Longer user= prefix before shorter user= prefix.
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# (6) Specified seinfo= string before unspecified seinfo= string.
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# (7) Specified name= string before unspecified name= string.
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# (8) Specified path= string before unspecified path= string.
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# (9) Specified sebool= string before unspecified sebool= string.
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#
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# Outputs:
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# domain (string)
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# type (string)
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# levelFrom (string; one of none, all, app, or user)
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# level (string)
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# Only entries that specify domain= will be used for app process labeling.
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# Only entries that specify type= will be used for app directory labeling.
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# levelFrom=user is only supported for _app or _isolated UIDs.
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# levelFrom=app or levelFrom=all is only supported for _app UIDs.
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# level may be used to specify a fixed level for any UID.
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#
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isSystemServer=true domain=system_server
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user=system seinfo=platform domain=system_app type=system_app_data_file
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user=bluetooth seinfo=platform domain=bluetooth type=bluetooth_data_file
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user=nfc seinfo=platform domain=nfc type=nfc_data_file
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user=radio seinfo=platform domain=radio type=radio_data_file
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user=shared_relro domain=shared_relro
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user=shell seinfo=platform domain=shell type=shell_data_file
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user=_isolated domain=isolated_app levelFrom=user
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user=_app seinfo=platform domain=platform_app type=app_data_file levelFrom=user
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user=_app domain=untrusted_app type=app_data_file levelFrom=user
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