105 lines
3.0 KiB
Bash
Executable File
105 lines
3.0 KiB
Bash
Executable File
#!/bin/sh -e
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################################################################################
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#
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# Copyright(C) Jonas 'Sortie' Termansen 2015.
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#
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# This program is free software: you can redistribute it and/or modify it
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# under the terms of the GNU General Public License as published by the Free
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# Software Foundation, either version 3 of the License, or (at your option)
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# any later version.
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#
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# This program is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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# more details.
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#
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# You should have received a copy of the GNU General Public License along with
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# this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# update-initrd
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# Generate a mkinitrd that locates and chain boots the real root filesystem.
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#
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################################################################################
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show_version() {
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cat << EOF
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$0 (Sortix)
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License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
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This is free software: you are free to change and redistribute it.
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There is NO WARRANTY, to the extent permitted by law.
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EOF
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exit 0
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}
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show_help() {
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cat << EOF
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Usage: $0 [OPTION]...
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Generate a mkinitrd that locates and chain boots the real root filesystem.
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Configuration:
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--help display this help and exit
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--version display version information and exit
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--sysroot=DIR operate on this root filesystem [/]
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EOF
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exit 0
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}
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sysroot=
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dashdash=
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previous_option=
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for argument do
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if test -n "$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" : '[^=]*=\(.*\)') ;;
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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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--sysroot=*) sysroot=$parameter ;;
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--sysroot) previous_option=sysroot ;;
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--help) show_help ;;
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--version) show_version ;;
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-*) echo "$0: unrecognized option $argument" >&2
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$option_checking && exit 1 ;;
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*) echo "$0: unexpected operand $argument" >&2
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exit 1 ;;
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esac
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done
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if [ ! -e "$sysroot/etc/fstab" ]; then
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echo "$0: $sysroot/etc/fstab: Need a filesystem table to make an initrd" >&2
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exit 1
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fi
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sysmerge=false
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exec_prefix="$sysroot"
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if [ -d "$sysroot/sysmerge" ]; then
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sysmerge=true
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exec_prefix="$sysroot/sysmerge"
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fi
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tmp=$(mktemp -d)
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trap 'rm -rf "$tmp"' EXIT HUP INT QUIT TERM
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mkdir "$tmp/bin"
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mkdir "$tmp/sbin"
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cp "$exec_prefix/sbin/init" "$tmp/sbin"
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cp "$exec_prefix/sbin/extfs" "$tmp/sbin"
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test -f "$exec_prefix/sbin/fsck.ext2" &&
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cp "$exec_prefix/sbin/fsck.ext2" "$tmp/sbin"
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mkdir "$tmp/etc"
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cp "$sysroot/etc/fstab" "$tmp/etc/fstab"
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mkdir "$tmp/etc/init"
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if $sysmerge; then
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echo chain-merge > "$tmp/etc/init/target"
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else
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echo chain > "$tmp/etc/init/target"
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fi
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mkdir -p "$sysroot/boot"
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mkinitrd --format=sortix-initrd-2 "$tmp" -o "$sysroot/boot/sortix.initrd" > /dev/null
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