CS2303-Project1-Android_Process_Tree

This is the first project for Operating System in SJTU, semester 2022 Spring.

The project is composed of 4 sub-problems.

Problem 1: Implement ptree syscall, printing the Android Process Tree in AVD

The source file is ptree_module/ptree_mod.c with the corresponding makefile ptree_module/Makefile.

Execute cd ptree_module&&make and then get the target module file ptree_module/ptree_mod.ko.

Problem 2: Test the newly added ptree syscall

The source file is ptree/jni/ptree.c with the corresponding makefile ptree/jni/Android.mk.

Execute cd ptree/jni&&ndk-build and then get the target file ptree/libs/armeabi/ptree.

Problem 3: Generate a new process, and execute ptree in the child process

The source file is ptree_gen/jni/ptree_gen.c with the corresponding makefile ptree_gen/jni/Android.mk.

Execute cd ptree_gen/jni&&ndk-build and then get the target file ptree_gen/libs/armeabi/ptree_gen.

Problem 4: Implement a Caesar Encryption Server using Concurrent Programming

The source file is encryption/jni/server.c and encryption/jni/client.c with the corresponding makefile encryption/jni/Android.mk.

Execute cd encryption/jni&&ndk-build and then get the target file encryption/libs/armeabi/server and encryption/libs/armeabi/client.