scall 0.2.5

Friendlier raw system calls for Rust.
Documentation 
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name: Extract syscalls/error numbers

on:
  push:
    branches: [test-ci]
  schedule:
    - cron: '0 0 * * 0'
  workflow_dispatch: {}

defaults:
  run:
    shell: bash

jobs:
  extract-nrs:
    name: Extract syscalls

    strategy:
      fail-fast: false

    continue-on-error: false
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v2

      - name: Build Linux kernel headers
        run: |
          set -e
          cd ${{ runner.temp }}
          git clone --depth=1 git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
          cd linux

          make headers
          for arch in arm64 arm mips powerpc sparc x86; do
            make ARCH="${arch}" archheaders
          done

      - name: Download FreeBSD/macOS syscalls.master and errno.h
        run: |
          set -e
          wget https://github.com/freebsd/freebsd-src/raw/main/sys/kern/syscalls.master -O ${{ runner.temp }}/freebsd-syscalls.master
          wget https://github.com/freebsd/freebsd-src/raw/main/sys/sys/errno.h -O ${{ runner.temp }}/freebsd-errno.h
          wget https://github.com/apple/darwin-xnu/raw/main/bsd/kern/syscalls.master -O ${{ runner.temp }}/macos-syscalls.master
          wget https://github.com/apple/darwin-xnu/raw/main/bsd/sys/errno.h -O ${{ runner.temp }}/macos-errno.h

      - name: Build new syscall/error number files
        run: |
          set -e
          cd tools
          python3 nr_from_src.py ${{ runner.temp }}/linux
          python3 eno_from_src.py ${{ runner.temp }}/linux
          python3 bsd_nr_from_src.py ${{ runner.temp }}/freebsd-syscalls.master freebsd
          python3 bsd_eno_from_src.py ${{ runner.temp }}/freebsd-errno.h freebsd
          python3 bsd_nr_from_src.py ${{ runner.temp }}/macos-syscalls.master macos
          python3 bsd_eno_from_src.py ${{ runner.temp }}/macos-errno.h macos

      - name: Check for changes
        run: |
          if [ -n "$(git status --porcelain=v1)" ]; then
            echo 'has_changes=true' >>$GITHUB_ENV
          fi

      - name: Push changes
        if: ${{ env.has_changes == 'true' }}
        run: |
          set -e
          git add .
          git config user.name ${{ github.repository_owner }}
          git config user.email ${{ github.repository_owner }}@users.noreply.github.com
          git commit -m "nr: update based on kernel sources"
          git push --force https://${GITHUB_ACTOR}:${{ secrets.GITHUB_TOKEN }}@github.com/${GITHUB_REPOSITORY}.git HEAD:syscalls-auto