Files

Josh Gao 22beef1b28 minadbd: statically link libadbd.

Reduce the amount of wasted space on the recovery image by statically
linking all of the adb libraries into minadbd.

Bug: http://b/150317254
Test: booted aosp_walleye-eng into recovery
Change-Id: I5233b1a23c14f9d478bb77c25ebdbb0ce45bcc5a
Merged-In: I5233b1a23c14f9d478bb77c25ebdbb0ce45bcc5a
(cherry picked from commit 5ee3eba34f0ddf478f53ac4d0774c1ee423a5182)

2020-03-31 17:02:45 -07:00

include/minadbd

minadbd: Export minadbd/types.h to libinstall.

2019-09-26 00:04:11 -07:00

Android.bp

minadbd: statically link libadbd.

2020-03-31 17:02:45 -07:00

AndroidTest.xml

Add test config to minadbd_test

2017-03-28 22:13:38 -07:00

fuse_adb_provider_test.cpp

Create a FuseDataProvider base class

2019-03-19 11:11:58 -07:00

fuse_adb_provider.cpp

minadbd: Support rescue install and getprop commands.

2019-04-19 12:53:55 -07:00

fuse_adb_provider.h

Support starting fuse from a block map

2019-06-20 13:53:40 -07:00

minadbd_services_test.cpp

minadbd: Export minadbd/types.h to libinstall.

2019-09-26 00:04:11 -07:00

minadbd_services.cpp

minadbd: statically link libadbd.

2020-03-31 17:02:45 -07:00

minadbd_services.h

Add test for minadbd

2019-04-23 11:33:57 -07:00

minadbd.cpp

minadbd: Export minadbd/types.h to libinstall.

2019-09-26 00:04:11 -07:00

README.md

minadbd: Update README.md.

2019-09-27 13:17:16 -07:00

README.md

minadbd

minadbd is analogous to the regular adbd, but providing the minimal services to support recovery-specific use cases. Generally speaking, adbd = libadbd + libadbd_services, whereas minadbd = libadbd + libminadbd_services.

Although both modules may be installed into the recovery image, only one of them, or none, can be active at any given time.

The start / stop of adbd is managed via system property sys.usb.config, when setting to adb or none respectively. Upon starting recovery mode, adbd is started in debuggable builds by default; otherwise adbd will stay off at all times in user builds. See the triggers in bootable/recovery/etc/init.rc.
minadbd is started by recovery as needed.
- When requested to start minadbd, recovery stops adbd first, if it's running; it then forks and execs minadbd in a separate process.
- minadbd talks to host-side adb server to get user requests.
  - minadbd handles some requests directly, e.g. querying device properties for rescue service.
  - minadbd communicates with recovery to fulfill requests regarding package installation. See the comments in bootable/recovery/install/adb_install.cpp for the IPC protocol between recovery and minadbd.
- Upon exiting minadbd, recovery restarts adbd if it was previously running.