Systems Programming Labs (TUM)

This repository contains solutions for the Systems Programming practical course at TUM.

---

Repository Structure

.
├── README.md
├── task00-sort
├── task01-syscalls
├── task02-fileio
└── task03-processes

---

Tasks

task00-sort

• External sort implementation under memory constraints
• Supports ascending and reverse order (-r)

➡️ See: task00-sort/

---

task01-syscalls

• System call wrappers using syscall()
• Direct syscall invocation via inline assembly
• Minimal syscall tracer using ptrace()

➡️ See: task01-syscalls/

---

task02-fileio

• In-memory filesystem implemented using FUSE
• Supports hierarchical files and directories
• Read / write / append operations
• Symbolic links and filesystem statistics
• Log-based crash recovery (operation replay)

➡️ See: task02-fileio/

---

task03-processes

• Unix-like shell implementation
• Multi-stage pipeline execution using pipe
• Input / output redirection
• Background process execution
• Builtin process management commands:
  • wait
  • kill
  • exit
• Flex/Bison-based command parser

➡️ See: task03-processes/

---

Build

Each task is self-contained.

Example:

cd task00-sort
make

---

Usage

Refer to the README inside each task directory for details.

---

Notes

• Target platform: Linux x86-64
• Languages: C / C++
• Each task is independent and can be built separately