appspawn Module
After appspawn is started by init, its service name (appspawn) is registered with the IPC framework. Upon receiving inter-process messages, appspawn starts the application service based on the message parsing result, and grants the corresponding permission to the application service.
You can obtain the macro definition APPSPAWN_SERVICE_NAME corresponding to appspawn by including the header file base\startup\appspawn_lite\services\include\appspawn_service.h. Due to some constraints on the security subsystem, only Ability Manager Service (AMS) has the permission to send inter-process messages to appspawn.
The messages are in JSON format, as shown in the following:
"{\"bundleName\":\"testvalid1\",\"identityID\":\"1234\",\"uID\":1000,\"gID\":1000,\"capability\":[0]}"
Table 1 Keys in messages