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Merge "Stop using trigger_reset_main." into qt-dev

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Martijn Coenen 2019-05-01 17:45:23 +00:00 committed by Android (Google) Code Review
commit 9db42907b5
1 changed files with 19 additions and 8 deletions
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27
cryptfs.cpp
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@ -1569,12 +1569,23 @@ static int cryptfs_restart_internal(int restart_main) {
if (restart_main) {
/* Here is where we shut down the framework. The init scripts
* start all services in one of three classes: core, main or late_start.
* On boot, we start core and main. Now, we stop main, but not core,
* as core includes vold and a few other really important things that
* we need to keep running. Once main has stopped, we should be able
* start all services in one of these classes: core, early_hal, hal,
* main and late_start. To get to the minimal UI for PIN entry, we
* need to start core, early_hal, hal and main. When we want to
* shutdown the framework again, we need to stop most of the services in
* these classes, but only those services that were started after
* /data was mounted. This excludes critical services like vold and
* ueventd, which need to keep running. We could possible stop
* even fewer services, but because we want services to pick up APEX
* libraries from the real /data, restarting is better, as it makes
* these devices consistent with FBE devices and lets them use the
* most recent code.
*
* Once these services have stopped, we should be able
* to umount the tmpfs /data, then mount the encrypted /data.
* We then restart the class main, and also the class late_start.
* We then restart the class core, hal, main, and also the class
* late_start.
*
* At the moment, I've only put a few things in late_start that I know
* are not needed to bring up the framework, and that also cause problems
* with unmounting the tmpfs /data, but I hope to add add more services
@ -1582,10 +1593,10 @@ static int cryptfs_restart_internal(int restart_main) {
* till the user is asked for the password to the filesystem.
*/
/* The init files are setup to stop the class main when vold.decrypt is
* set to trigger_reset_main.
/* The init files are setup to stop the right set of services when
* vold.decrypt is set to trigger_shutdown_framework.
*/
property_set("vold.decrypt", "trigger_reset_main");
property_set("vold.decrypt", "trigger_shutdown_framework");
SLOGD("Just asked init to shut down class main\n");
/* Ugh, shutting down the framework is not synchronous, so until it