This change adds all the kernel parts of a network stack. The network stack is partial but implements many of the important parts. Add if(4) network interface abstraction. Network interfaces are registered in a global list that can be iterated and each assigned an unique integer identifier. Add reference counted packets with a cache that recycles recent packets. Add support for lo(4) loopback and ether(4) ethernet network interfaces. The /dev/lo0 loopback device is created automatically on boot. Add arp(4) address resolution protocol driver for translation of inet(4) network layer addresses into ether(4) link layer addresses. arp(4) entries are cached and evicted from the cache when needed or when the entry has not been used for a while. The cache is limited to 256 entries for now. Add ip(4) internet protocol version 4 support. IP fragmentation and options are not implemented yet. Add tcp(4) transmission control protocol sockets for a reliable transport layer protocol that provides a reliable byte stream connection between two hosts. The implementation is incomplete and does not yet implement out of band data, options, and high performance extensions. Add udp(4) user datagram protocol sockets for a connectionless transport layer that provides best-effort delivery of datagrams. Add ping(4) sockets for a best-effort delivery of echo datagrams. Change type of sa_family_t from unsigned short to uint16_t. Add --disable-network-drivers to the kernel(7) options and expose it with a bootloader menu. tix-iso-bootconfig can set this option by default. Import CRC32 code from libz for the Ethernet checksum. This is a compatible ABI change that adds features to socket(2) (AF_INET, IPPROTO_TCP, IPPROTO_UDP, IPPROTO_PING), the ioctls for if(4), socket options, and the lo0 loopback interface. This commit is based on work by Meisaka Yukara contributed as the commit bbf7f1e8a5238a2bd1fe8eb1d2cc5c9c2421e2c4. Almost no lines of this work remains in this final commit as it has been rewritten or refactored away over the years, see the individual file headers for which files contain remnants of this work. Co-authored-by: Meisaka Yukara <Meisaka.Yukara@gmail.com>
561 lines
11 KiB
Bash
Executable file
561 lines
11 KiB
Bash
Executable file
#!/bin/sh
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# Copyright (c) 2018, 2022 Jonas 'Sortie' Termansen.
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#
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# Permission to use, copy, modify, and distribute this software for any
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# purpose with or without fee is hereby granted, provided that the above
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# copyright notice and this permission notice appear in all copies.
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#
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# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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#
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# iso-grub-cfg.sh
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# Generate GRUB bootloader configuration for release .iso filesystems.
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# Note: This file has detailed documentation in release-iso-bootconfig(7).
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set -e
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this=$(which -- "$0")
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thisdir=$(dirname -- "$this")
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platform=
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directory=
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version=
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dashdash=
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previous_option=
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for argument do
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if test -n "$previous_option"; then
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eval $previous_option=\$argument
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previous_option=
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continue
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fi
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case $argument in
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*=?*) parameter=$(expr "X$argument" : '[^=]*=\(.*\)' || true) ;;
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*=) parameter= ;;
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*) parameter=yes ;;
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esac
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case $dashdash$argument in
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--) dashdash=yes ;;
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--platform=*) platform=$parameter ;;
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--platform) previous_option=platform ;;
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--version=*) version=$parameter ;;
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--version) previous_option=version ;;
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-*) echo "$0: unrecognized option $argument" >&2
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exit 1 ;;
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*) directory="$argument" ;;
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esac
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done
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if test -n "$previous_option"; then
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echo "$0: option '$argument' requires an argument" >&2
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exit 1
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fi
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if test -z "$platform"; then
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echo "$0: platform wasn't set with --platform" >&2
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exit 1
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fi
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if test -z "$version"; then
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echo "$0: version wasn't set with --version" >&2
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exit 1
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fi
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if test -z "$directory"; then
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echo "$0: no directory operand supplied" >&2
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exit 1
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fi
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machine=$(expr x"$platform" : 'x\([^-]*\).*')
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maybe_compressed() {
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if [ -e "$1.xz" ]; then
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echo "$1.xz"
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elif [ -e "$1.gz" ]; then
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echo "$1.gz"
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elif [ -e "$1" ]; then
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echo "$1"
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fi
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}
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human_size() {
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(export LC_ALL=C; du -bh "$1" 2>/dev/null || du -h "$1") |
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sed -E 's/^([^[:space:]]+).*/\1/'
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}
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portvar() {
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echo "$1" | sed -e 's/-/_/g' -e 's/+/x/g'
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}
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isinset() {
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(for port in $2; do
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if [ x"$1" = x"$port" ]; then
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echo true
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exit 0
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fi
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done
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echo false
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exit 0)
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}
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. "$thisdir/ports.conf"
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cd "$directory"
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kernel=$(maybe_compressed boot/sortix.bin)
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live_initrd=$(maybe_compressed boot/live.initrd)
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overlay_initrd=$(maybe_compressed boot/overlay.initrd)
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src_initrd=$(maybe_compressed boot/src.initrd)
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system_initrd=$(maybe_compressed boot/system.initrd)
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ports=$(ls repository |
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grep -E '\.tix\.tar\.xz$' |
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sed -E 's/\.tix\.tar\.xz$//')
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mkdir -p boot/grub
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exec > boot/grub/grub.cfg
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for hook in \
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advanced_menu_post \
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advanced_menu_pre \
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initrd_post \
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kernel_post \
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kernel_pre \
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menu_post \
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menu_pre \
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ports_menu \
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ports_menu_post \
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ports_menu_pre \
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ports_menu_sets \
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ports_post \
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ports_pre \
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tix_menu \
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tix_menu_post \
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tix_menu_pre \
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tix_menu_sets \
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; do
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cat << EOF
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function hook_$hook {
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true
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}
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EOF
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done
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for set in all $sets no; do
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cat << EOF
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function hook_ports_set_$set {
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true
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}
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function hook_tix_set_$set {
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true
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}
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EOF
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done
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echo
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cat << EOF
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insmod part_msdos
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insmod ext2
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EOF
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find . | grep -Eq '\.gz$' && echo "insmod gzio"
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find . | grep -Eq '\.xz$' && echo "insmod xzio"
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cat << EOF
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insmod all_video
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if loadfont unicode; then
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insmod gfxterm
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terminal_output gfxterm
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fi
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set version="$version"
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set machine="$machine"
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set base_menu_title="Sortix \$version for \$machine"
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set menu_title="\$base_menu_title"
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set timeout=10
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set default="0"
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if [ -e /boot/random.seed ]; then
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no_random_seed=
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else
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no_random_seed=--no-random-seed
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fi
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set enable_src=true
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set enable_network_drivers=
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export version
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export machine
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export base_menu_title
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export menu_title
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export timeout
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export default
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export no_random_seed
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export enable_src
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export enable_network_drivers
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EOF
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if [ -n "$ports" ]; then
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echo
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for port in $ports; do
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printf 'port_%s=true\n' "$(portvar "$port")"
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done
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for port in $ports; do
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printf 'tix_%s=false\n' "$(portvar "$port")"
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done
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echo
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for port in $ports; do
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printf 'export port_%s\n' "$(portvar "$port")"
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done
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for port in $ports; do
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printf 'export tix_%s\n' "$(portvar "$port")"
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done
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fi
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echo
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echo 'function select_ports_set_no {'
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for port in $ports; do
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printf " port_%s=false\n" "$(portvar "$port")"
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done
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printf " hook_port_set_no\n"
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echo "}"
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for set in $sets; do
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echo
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set_content=$(eval echo \$set_$set)
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echo "function select_ports_set_$set {"
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for port in $ports; do
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printf " port_%s=%s\n" "$(portvar "$port")" "$(isinset "$port" "$set_content")"
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done
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printf " hook_port_set_%s\n" "$set"
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echo "}"
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done
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echo
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echo 'function select_ports_set_all {'
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for port in $ports; do
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printf " port_%s=true\n" "$(portvar "$port")"
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done
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printf " hook_port_set_all\n"
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echo "}"
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echo
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echo 'function select_tix_set_no {'
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for port in $ports; do
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printf " tix_%s=false\n" "$(portvar "$port")"
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done
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printf " hook_tix_set_no\n"
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echo "}"
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for set in $sets; do
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echo
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set_content=$(eval echo \$set_$set)
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echo "function select_tix_set_$set {"
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for port in $ports; do
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printf " tix_%s=%s\n" "$(portvar "$port")" "$(isinset "$port" "$set_content")"
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done
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printf " hook_tix_set_%s\n" "$set"
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echo "}"
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done
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echo
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echo 'function select_tix_set_all {'
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for port in $ports; do
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printf " tix_%s=true\n" "$(portvar "$port")"
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done
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printf " hook_tix_set_all\n"
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echo "}"
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echo
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printf "function load_base {\n"
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case $platform in
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x86_64-*)
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cat << EOF
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if ! cpuid -l; then
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echo "Error: You cannot run this 64-bit operating system because this" \
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"computer has no 64-bit mode."
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read
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exit
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fi
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EOF
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;;
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esac
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cat << EOF
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hook_kernel_pre
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echo -n "Loading /$kernel ($(human_size $kernel)) ... "
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multiboot /$kernel \$no_random_seed \$enable_network_drivers "\$@"
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echo done
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hook_kernel_post
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if [ \$no_random_seed != --no-random-seed ]; then
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echo -n "Loading /boot/random.seed (256) ... "
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module /boot/random.seed --random-seed
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echo done
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fi
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EOF
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for initrd in $system_initrd $src_initrd $live_initrd $overlay_initrd; do
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if [ "$initrd" = "$src_initrd" ]; then
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cat << EOF
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if \$enable_src; then
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echo -n "Loading /$initrd ($(human_size $initrd)) ... "
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module /$initrd
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echo done
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fi
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EOF
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else
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cat << EOF
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echo -n "Loading /$initrd ($(human_size $initrd)) ... "
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module /$initrd
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echo done
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EOF
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fi
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done
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cat << EOF
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hook_initrd_post
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}
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EOF
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echo
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cat << EOF
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function load_ports {
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hook_ports_pre
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EOF
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if [ -z "$ports" ]; then
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printf " true\n"
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fi
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for port in $ports; do
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tix=repository/$port.tix.tar.xz
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cat << EOF
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if \$tix_$(portvar "$port"); then
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echo -n "Loading /$tix ($(human_size $tix)) ... "
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module --nounzip /$tix --to /$tix
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echo done
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fi
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if \$port_$(portvar "$port"); then
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echo -n "Loading /$tix ($(human_size $tix)) ... "
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module /$tix --tix
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echo done
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fi
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EOF
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done
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cat << EOF
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hook_ports_post
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}
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EOF
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echo
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cat << EOF
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function load_sortix {
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load_base "\$@"
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load_ports
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}
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EOF
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cat << EOF
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if [ -e /boot/grub/hooks.cfg ]; then
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. /boot/grub/hooks.cfg
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fi
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. /boot/grub/main.cfg
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EOF
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exec > boot/grub/main.cfg
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menuentry() {
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echo
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printf "menuentry \"Sortix (%s)\" {\n" "$1"
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if [ -n "$2" ]; then
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printf " load_sortix %s\n" "$2"
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#printf " load_sortix '"
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#printf '%s' "$2" | sed "s,','\\'',g"
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#printf "'\n"
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else
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printf " load_sortix\n"
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fi
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printf "}\n"
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}
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cat << EOF
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menu_title="\$base_menu_title"
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hook_menu_pre
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EOF
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menuentry "live environment" '-- /sbin/init'
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menuentry "new installation" '-- /sbin/init --target=sysinstall'
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menuentry "upgrade existing installation" '-- /sbin/init --target=sysupgrade'
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cat << EOF
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menuentry "Select ports..." {
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configfile /boot/grub/ports.cfg
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}
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menuentry "Advanced..." {
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configfile /boot/grub/advanced.cfg
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}
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hook_menu_post
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EOF
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exec > boot/grub/advanced.cfg
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cat << EOF
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menuentry "Back..." {
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configfile /boot/grub/main.cfg
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}
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menu_title="\$base_menu_title - Advanced Options"
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hook_advanced_menu_pre
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if "\$enable_src"; then
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menuentry "Disable loading source code" {
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enable_src=false
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configfile /boot/grub/advanced.cfg
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}
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else
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menuentry "Enable loading source code" {
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enable_src=true
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configfile /boot/grub/advanced.cfg
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}
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fi
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if [ "\$enable_network_drivers" = --disable-network-drivers ]; then
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menuentry "Enable networking drivers" {
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enable_network_drivers=
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configfile /boot/grub/advanced.cfg
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}
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else
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menuentry "Disable networking drivers" {
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enable_network_drivers=--disable-network-drivers
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configfile /boot/grub/advanced.cfg
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}
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fi
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menuentry "Select binary packages..." {
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configfile /boot/grub/tix.cfg
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}
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hook_advanced_menu_post
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EOF
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exec > boot/grub/ports.cfg
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cat << EOF
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menuentry "Back..." {
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configfile /boot/grub/main.cfg
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}
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menu_title="\$base_menu_title - Ports"
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hook_ports_menu_pre
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menuentry "Load all ports" {
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select_ports_set_all
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configfile /boot/grub/ports.cfg
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}
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hook_ports_menu_sets
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EOF
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for set in $sets; do
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echo
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set_content=$(eval echo \$set_$set)
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printf 'menuentry "Load only '"$set"' ports" {\n'
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printf " select_ports_set_%s\n" "$set"
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printf ' configfile /boot/grub/ports.cfg\n'
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printf '}\n'
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done
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cat << EOF
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menuentry "Load no ports" {
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select_ports_set_no
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configfile /boot/grub/ports.cfg
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}
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hook_ports_menu
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EOF
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for port in $ports; do
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cat << EOF
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if \$port_$(portvar "$port"); then
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menuentry "$port = true" {
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port_$(portvar "$port")=false
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configfile /boot/grub/ports.cfg
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}
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else
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menuentry "$port = false" {
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port_$(portvar "$port")=true
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configfile /boot/grub/ports.cfg
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}
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fi
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EOF
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done
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cat << EOF
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hook_ports_menu_post
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EOF
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exec > boot/grub/tix.cfg
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cat << EOF
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menuentry "Back..." {
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configfile /boot/grub/advanced.cfg
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}
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menu_title="\$base_menu_title - Binary Packages"
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hook_tix_menu_pre
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menuentry "Load all binary packages" {
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select_tix_set_all
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configfile /boot/grub/tix.cfg
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}
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hook_tix_menu_sets
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EOF
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for set in $sets; do
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echo
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set_content=$(eval echo \$set_$set)
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printf 'menuentry "Load only '"$set"' binary packages" {\n'
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printf " select_tix_set_%s\n" "$set"
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printf ' configfile /boot/grub/tix.cfg\n'
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printf '}\n'
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done
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cat << EOF
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menuentry "Load no binary packages" {
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select_tix_set_no
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configfile /boot/grub/tix.cfg
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}
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hook_tix_menu
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EOF
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for port in $ports; do
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cat << EOF
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if \$tix_$(portvar "$port"); then
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menuentry "$port = true" {
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tix_$(portvar "$port")=false
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configfile /boot/grub/tix.cfg
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}
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else
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menuentry "$port = false" {
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tix_$(portvar "$port")=true
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configfile /boot/grub/tix.cfg
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}
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fi
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EOF
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done
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cat << EOF
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hook_tix_menu_post
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EOF
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