feat: implement sbrk and pipe syscalls #21

	name: CI

	on:
	push:
	branches: [ "main", "lab" ]
	pull_request:
	branches: [ "main", "lab" ]
	workflow_dispatch:

	jobs:
	fmt:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4

	- name: Install Rust toolchain
	uses: dtolnay/rust-toolchain@stable
	with:
	components: rustfmt

	- name: Check format
	run: cargo fmt --all --check

	qemu-exercise:
	runs-on: ubuntu-latest
	timeout-minutes: 30
	strategy:
	fail-fast: false
	matrix:
	ch: [3, 4, 5, 6, 8]
	steps:
	- uses: actions/checkout@v4

	- name: Install system dependencies
	run: \|
	sudo apt-get update
	sudo apt-get install -y \
	qemu-system-misc \
	python3 \
	git \
	curl \
	build-essential

	- name: Sanity check system tools
	run: \|
	set -eux
	qemu-system-riscv64 --version
	python3 --version
	git --version

	- name: Install Rust toolchain
	uses: dtolnay/rust-toolchain@stable
	with:
	targets: riscv64gc-unknown-none-elf
	components: rust-src, llvm-tools-preview

	- name: Sanity check Rust
	run: \|
	set -eux
	rustc --version
	cargo --version
	rustup --version

	- name: Mark workspace as safe git directory
	run: \|
	git config --global --add safe.directory "$GITHUB_WORKSPACE"

	- name: Checkout checker
	run: \|
	git clone --depth 1 https://github.com/LearningOS/rCore-Tutorial-Checker-2025S.git checker

	- name: Run exercise in QEMU and check output (ch${{ matrix.ch }})
	run: \|
	timeout 6m cargo qemu --ch ${{ matrix.ch }} --exercise --nobios --ci 2>&1 \
	\| python3 checker/check/ch${{ matrix.ch }}.py

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