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Tom Cherry f51657ccef ueventd: remove PlatformDeviceList 
In order to create symlinks for USB and block devices, the path for
their parent platform device must be known.

Previously, ueventd would save each platform device that it encounters
to a list and query this list when creating the symlinks.  That,
however, is racy because the uevent socket does not differentiate
uevents from RegenerateUevents() and uevents sent by the kernel when
probing a device first the first time.  The below scenario is the
faulty  case:

1) Kernel probes parent platform device for a block device
2) ueventd calls RegenerateUevents() and starts processing uevents
3) Kernel probes block device and sends its uevents
4) ueventd picks up the block device uevent during its uevent processing,
   without yet regenerating the platform device uevent, causing improper
   symlinks to be created.

This change stops storing the platform devices in a list, and instead
traverses up the directory structure for each USB or block device
until it reaches a platform device, defined as one whose subsystem is
the platform bus.  This fixes the race and simplifies the ueventd
code.

Bug: 62436493
Bug: 62681642
Test: Boot bullhead
Test: Boot sailfish
Test: Init unit tests
Test: Boot hikey + hotplug/unplug sdcard
Merged-In: I21636355d8e434f30e0cba568598a6cf139e67f9
Change-Id: I21636355d8e434f30e0cba568598a6cf139e67f9
(cherry picked from commit c94ce7b130)
2017-06-20 14:26:15 -07:00
adb adb: fix deadlock between transport_unref and usb_close. 2017-06-19 11:17:44 -07:00
adf libadfhwc: Fix adf_hwc_close 2017-03-02 17:40:16 +00:00
base logging: make LOG(FATAL) always run with the static analyzer. 2017-05-31 14:41:22 +00:00
bootstat bootstat: Log factory_reset_boot_complete separately from ota_*. 2017-05-30 15:03:15 -07:00
cpio Possible null pointer miss on realloc 2017-03-23 22:41:14 +01:00
debuggerd tombstoned: log where we're writing the tombstone. 2017-06-12 23:41:45 -07:00
demangle Fix handling of _ZLXX. 2017-06-01 17:37:09 -07:00
fastboot fastboot: use filename instead of fd to generate filesystem image 2017-05-31 21:23:12 +00:00
fs_mgr first stage mount: removing the restriction of mount points 2017-06-09 12:47:17 +08:00
gatekeeperd Credential FRP: keep gatekeeperd credentials after reset 2017-04-18 20:50:52 +00:00
healthd Merge "healthd: Implement scheduleUpdate" am: 6edabc75ab am: c0405200b8 2017-03-23 01:12:17 +00:00
include Load vendor public libraries to sphal namespace 2017-05-25 10:30:55 -07:00
init ueventd: remove PlatformDeviceList 2017-06-20 14:26:15 -07:00
libappfuse Add more logs for writing failures. 2017-06-12 10:37:08 +09:00
libbacktrace Use demangle for function names. 2017-06-02 10:10:24 -07:00
libbinderwrapper libbinderwrapper: Android.mk -> Android.bp 2017-04-25 15:55:26 -07:00
libcrypto_utils Add vendor_available:true to libcrypto_utils 2017-05-16 11:51:09 -07:00
libcutils Revert "Revert "Load default prop from /system/etc/prop.default"" 2017-06-13 21:22:06 +08:00
libdiskconfig Mark libdiskconfig vendor_available. 2017-05-31 01:54:31 +00:00
libgrallocusage Mark libgrallocusage as vendor_available 2017-05-04 12:25:43 +09:00
libion Mark libion vendor_available. 2017-05-31 01:56:38 +00:00
libkeyutils Add libkeyutils. 2017-05-10 14:53:28 -07:00
liblog add component metadata tag to CTS liblog test acses 2017-06-06 19:28:39 +00:00
libmemtrack libmemtrack: check return value for getMemory() 2017-02-27 12:21:39 -08:00
libmemunreachable Add a helpful error message if GetUnreachableMemory fails 2017-06-15 13:15:09 -07:00
libmetricslogger Mark libmetricslogger vendor_available. 2017-05-31 01:52:59 +00:00
libnativebridge Load vendor public libraries to sphal namespace 2017-05-25 10:30:55 -07:00
libnativeloader Load vendor public libraries to sphal namespace 2017-05-25 10:30:55 -07:00
libnetutils Mark libnetutils vendor_available. 2017-05-31 02:02:17 +00:00
libpackagelistparser liblog: use log/log.h when utilizing ALOG macros 2017-01-11 09:31:15 -08:00
libpixelflinger liblog: use log/log.h when utilizing ALOG macros 2017-01-11 09:31:15 -08:00
libprocessgroup init: move killing of process groups to libprocessgroup 2017-06-15 10:21:05 -07:00
libprocinfo Mark libprocinfo vendor_avaialable. 2017-05-31 01:52:14 +00:00
libsparse Merge "libsparse: Fix odd-sized input files total_blks" am: 652ce94f40 am: ab74c778df 2017-04-19 19:26:27 +00:00
libsuspend Mark libsuspend vendor_available. 2017-05-31 01:51:00 +00:00
libsync libsync: ndk: Fix compilation in C mode. 2017-04-14 15:12:06 -07:00
libsystem fix circular dependency libnativewindow <-> libui 2017-05-09 15:15:50 -07:00
libsysutils Mark libsysutils vendor_available. 2017-05-31 01:59:42 +00:00
libunwindstack Change RegsTmpl to RegsImpl. 2017-06-01 17:56:46 -07:00
libusbhost Merge "Convert libusbhost to Android.bp" am: a58c4b5bcd am: dff208c80c 2017-04-20 17:24:57 +00:00
libutils Merge "fix: ATRACE does not work for libs loaded in sphal namespace" into oc-dev 2017-05-31 00:36:15 +00:00
libvndksupport Merge "libvndksupport: Do not lookup default namespace for sphal failure" into oc-dev 2017-05-31 07:01:41 +00:00
libziparchive Mark libziparchive vendor_available. 2017-05-31 01:58:06 +00:00
lmkd lmkd: Android.mk -> Android.bp 2017-04-28 15:20:18 -07:00
logcat logcat: logcatd: make logcatd killable 2017-05-31 11:27:22 -07:00
logd add component metadata tag to CTS liblog test acses 2017-06-05 23:17:50 +00:00
logwrapper Merge "logwrapper: add a benchmark for android_fork_execvp_ext" 2017-03-23 11:56:10 +00:00
mkbootimg mkbootimg: use int for os_version and os_patch_level 2016-03-29 16:06:37 -07:00
qemu_pipe Mark libqemu_pipe vendor_available 2017-06-08 14:16:11 -07:00
reboot Convert more Android.mk files to Android.bp 2016-07-13 17:41:45 -07:00
rootdir Don't allow libui.so to RS drivers. 2017-06-09 17:38:28 +09:00
run-as Define range of GIDs for cached app data. 2016-12-13 13:28:08 -07:00
sdcard Make sdcardfs the default 2017-03-20 13:11:10 -07:00
shell_and_utilities Add building and installing of grep for vendor. 2017-06-19 13:12:37 -07:00
storaged storaged: stop binder threads before exiting 2017-04-04 19:44:01 +00:00
toolbox Add building and installing of grep for vendor. 2017-06-19 13:12:37 -07:00
trusty trusty*: Android.mk -> Android.bp 2017-05-08 16:54:04 +00:00
tzdatacheck Update to support staging behavior 2017-03-31 17:41:56 +01:00
.clang-format Add a 2 width option of clang format. 2017-03-10 13:01:39 -08:00
.clang-format-2 Only allow short functions in class definitions. 2017-03-28 12:31:37 -07:00
.clang-format-4 Only allow short functions in class definitions. 2017-03-28 12:31:37 -07:00
.gitignore Ignore adb/*.pyc files 2015-08-11 12:59:58 -07:00
Android.bp Export android_filesystem_config.h as a filegroup 2017-01-17 18:20:28 -08:00
Android.mk Remove the simulator target from all makefiles. 2011-07-11 22:12:32 -07:00
CleanSpec.mk init.rc: have hwservicemanager start the HAL class 2016-09-26 00:23:51 -07:00
MODULE_LICENSE_APACHE2 auto import from //depot/cupcake/@135843 2013-07-30 13:56:49 -07:00
NOTICE Fix omission in NOTICE file. 2013-07-30 13:56:55 -07:00
platform_tools_tool_version.mk Fix warning on the build servers 2017-05-25 12:35:40 -07:00
PREUPLOAD.cfg Add a PREUPLOAD.cfg file to run git-clang-format on every commit 2017-03-08 16:51:26 +08:00