8c65520173
Nikita (@NotKit) noticed that the change in commit f227ae4291
("[gbinder] All binder objects need stability field in Android 11.
JB#58951") has made the aidl4 servicemanager variant redundant. In fact,
using aidl4 variant will cause an extra stability field to be sent on
the wire (luckily it has not caused any problem).
I've tried using aidl3 variant on Volla Phone X23 which runs Halium 12
(API level 32), and service registration still work, which seems to
validate this theory. Thus, stop using aidl4 servicemanager variant on
any of the API level-based config, as it no longer correspond to any of
Android versions.
Note that this commit doesn't outright remove aidl4 variant, as doing so
would break configurations which explicitly request its use. This commit
doesn't doesn't alias the aidl4 variant to aidl3 variant either.
Manually requesting a certain variant could mean some unusual setup;
aliasing aidl4 to aidl3 could break such setup.
Origin: vendor
Forwarded: https://github.com/mer-hybris/libgbinder/pull/133
GLib-style interface to binder (Android IPC mechanism) Key features: 1. Integration with GLib event loop 2. Detection of 32 vs 64 bit kernel at runtime 3. Asynchronous transactions that don't block the event thread 4. Stable service manager and low-level transaction APIs Android keeps changing both low-level RPC and service manager protocols from version to version. To counter that, libgbinder implements configirable backends for different variants of those, and yet keeping its own API unchanged. Configuration is loaded from [Protocol] and [ServiceManager] sections of /etc/gbinder.conf file. The keys are binder device names or the special Default value, the value is the identifier of the protocol or service manager variant, respectively. In addition to reading /etc/gbinder.conf if it exists, /etc/gbinder.d directory is scanned for .conf files, the file list is sorted, files are loaded one by one, overwriting the entries loaded from /etc/gbinder.conf or from the previously processed file. Known protocol and service manager variants are aidl, aidl2, aidl3 and hidl. This list is expected to expand further in the future. The default configuration is as follows: [Protocol] Default = aidl /dev/binder = aidl /dev/hwbinder = hidl [ServiceManager] Default = aidl /dev/binder = aidl /dev/hwbinder = hidl Alternatively and preferably, one can specify the desired Android API level: [General] ApiLevel = 29 and let libgbinder pick the appropriate preset. Full list of presets can be found in src/gbinder_config.c