e933eb5a1c
The custom initrd format was originally useful when it was mounted, however it has been extracted into the ramfs for a very long time and has no advantages over the standard tar format which can be readily created and modified using standard tools. The kernel initrd(7) support already supports tar, so this change simply switches the format.
91 lines
2.7 KiB
Bash
Executable file
91 lines
2.7 KiB
Bash
Executable file
#!/bin/sh
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# Copyright (c) 2015, 2016, 2017, 2023 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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# update-initrd
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# Generate an initrd(7) that locates and chain boots the real root filesystem.
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set -e
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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" : '[^=]*=\(.*\)' || 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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--sysroot=*) sysroot=$parameter ;;
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--sysroot) previous_option=sysroot ;;
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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 $argument" >&2
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exit 1 ;;
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esac
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done
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if test -n "$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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sysmerge=false
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exec_prefix="$sysroot"
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if [ -d "$sysroot/sysmerge" ]; then
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# If an upgrade is pending, invoke the update-initrd of the new system, if
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# we're not already it.
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if [ "$(realpath -- "$(which -- "$0")")" != \
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"$(realpath -- "$sysroot/sysmerge/sbin/update-initrd")" ]; then
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exec "$sysroot/sysmerge/sbin/update-initrd" "$@"
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fi
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sysmerge=true
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exec_prefix="$sysroot/sysmerge"
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fi
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if [ ! -e "$sysroot/etc/fstab" ]; then
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echo "$0: $sysroot/etc/fstab: Need a filesystem table to make an initrd" >&2
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exit 1
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fi
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tmp=$(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 $sysmerge; then
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cat > "$tmp/etc/init/default" << EOF
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require chain-merge exit-code
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EOF
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else
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cat > "$tmp/etc/init/default" << EOF
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require chain exit-code
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EOF
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fi
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mkdir -p "$sysroot/boot"
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LC_AL=C ls -A "$tmp" |
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tar -C "$tmp" -cf "$sysroot/boot/sortix.initrd" \
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--numeric-owner --owner=0 --group=0 -T -
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