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10 commits

Author SHA1 Message Date
Josh Gao
57f58f8e4a crash_dump: fetch process/thread names before dropping privileges. 
Processes that don't have dumpable set to 1 cannot have their
process/thread names read by processes that don't have all of their
capabilities. Fetch these names in crash_dump before dropping
privileges.

Bug: http://b/36237221
Test: debuggerd_test
Test: debuggerd -b `pidof android.hardware.bluetooth@1.0-service`
Change-Id: I174769e7b3c1ea9f11f9c8cbdff83028a4225783
 2017-03-15 23:30:14 -07:00
Josh Gao
c7fe0600cc crash_dump: fix warnings, turn on -Werror. 
Test: mma
Change-Id: I0722fef7b513be976cbbe89f73e8bb7138a80442
 2017-03-13 14:13:29 -07:00
Josh Gao
9eb4eb1811 libdebuggerd: add compatibility shim. 
Avoid breaking internal code when AOSP automerges to internal.

This will be reverted after fixing up the uses on the other end.

Bug: http://b/35858739
Test: treehugger
Change-Id: If1ee03d8d7c218d3ad9f451cfe9a9077753dda02
 2017-03-09 12:13:16 -08:00
Josh Gao
e1aa0ca58a debuggerd_handler: implement missing fallback functionality. 
Allow the fallback implementation to dump traces and create tombstones
in seccomped processes.

Bug: http://b/35858739
Test: debuggerd -b `pidof media.codec`; killall -ABRT media.codec
Change-Id: I381b283de39a66d8900f1c320d32497d6f2b4ec4
 2017-03-09 11:26:05 -08:00
Chenjie Luo
97258aad8a Define _LOG as a weak symbol. 
So _LOG could be overridden by customized logging
implementations in non-Android systems.

Bug: 35919515
Test: Test on device
Change-Id: I0885c15353c0b1bf66f6f156e7f502f326b85d57
 2017-03-06 15:04:32 -08:00
Elliott Hughes
12b7129406 Small debuggerd improvements. 
Include the ABI in seccomp causes.

Slightly improved command-line usage information.

Fix crasher for seccomp failures.

Bug: N/A
Test: crasher
Change-Id: Ie419ecfe72ee4f5ccf49c927be18350a58a66a90
 2017-03-02 19:01:20 -08:00
Elliott Hughes
b7788fd454 There's no longer a limit to property names. 
Bug: http://b/33926793
Test: boots
Change-Id: I8554d7af74e064c114cf817f5a2ba1247fa2a2db
 2017-02-28 14:12:54 -08:00
Josh Gao
e73c932373 libdebuggerd_handler: in-process crash dumping for seccomped processes. 
Do an in-process unwind for processes that have PR_SET_NO_NEW_PRIVS
enabled.

Bug: http://b/34684590
Test: debuggerd_test, killall -ABRT media.codec
Change-Id: I62562ec2c419d6643970100ab1cc0288982a1eed
 2017-02-15 17:03:44 -08:00
Elliott Hughes
0ba535976f Better seccomp/kuser_helper diagnostics from debuggerd. 
Also switch to Android.bp for crasher.

Bug: http://b/34629282 (seccomp)
Bug: http://b/34705831 (seccomp)
Bug: http://b/34884086 (kuser_helpers)
Test: manual
Change-Id: I8ee79c635518faeba751742919af69a505b5e3e1
 2017-02-01 18:43:03 -08:00
Josh Gao
cbe70cb0a8 debuggerd: advance our amazing bet. 
Remove debuggerd in favor of a helper process that gets execed by
crashing processes.

Bug: http://b/30705528
Test: debuggerd_test
Change-Id: I9906c69473989cbf7fe5ea6cccf9a9c563d75906
 2017-01-17 13:57:57 -08:00