Implementation of A1 in check_scripts_assg1

1. Various system calls are implemented in this assignment
2. Specifically for sys_send and sys_recv, I have implemented a very direct solution using spin_locks
3. I have implemented sys_multi_send using interrupt handler

How to run

1. Clone this repo
2. cd check_scripts_assg1
3. bash check.sh assignment1_easy_2024AB.1234.tar.gz

Lets talk about xv6 main

Syscall Improvements (compared to check_scripts_assg1)

1. sys_send and sys_recv:
   Re-implemented using a message queue for better performance.
2. sys_multi_send:
   Simplified implementation, removing the use of interrupt handler.

---

A2 — Real Time Scheduling Implementation

a) System Calls

• sys_sched_policy(pid, policy) — Switch process to EDF, RMS, or default RR.
• sys_exec_time(pid, exec_time) — Set execution time limit (process auto-terminated by kernel).
• sys_deadline(pid, deadline) — Set relative deadline.
• sys_rate(pid, rate) — Set RMS rate (in inv. seconds; determines priority).

b) Kernel Extensions

• Added scheduling-related fields to struct proc.

A3

1. Currently doing Part-1 of assignment-3 related to buffer attack.