0fac39abe1
cpio expects a newline-separated list of files from stdin by default,
and you can change that to a NULL-terminated list of files by using the
'-0' switch.
Previously we were passing a NULL-terminated list ('-print0') and using
cpio with the default setting. For some reason busybox cpio works with
that but GNU cpio doesn't like that and generates an initramfs without
any files (as it only gets "a single file").
With this change the initramfs generation works fine with both busybox
cpio and gnu cpio.
Fixes #815
470 lines
12 KiB
Bash
470 lines
12 KiB
Bash
#!/bin/sh
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# Declare used deviceinfo variables to pass shellcheck (order alphabetically)
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deviceinfo_append_dtb=""
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deviceinfo_arch=""
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deviceinfo_bootimg_append_seandroidenforce=""
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deviceinfo_bootimg_blobpack=""
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deviceinfo_bootimg_dtb_second=""
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deviceinfo_bootimg_mtk_mkimage=""
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deviceinfo_bootimg_qcdt=""
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deviceinfo_dtb=""
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deviceinfo_flash_offset_base=""
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deviceinfo_flash_offset_kernel=""
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deviceinfo_flash_offset_ramdisk=""
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deviceinfo_flash_offset_second=""
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deviceinfo_flash_offset_tags=""
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deviceinfo_flash_pagesize=""
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deviceinfo_generate_bootimg=""
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deviceinfo_generate_legacy_uboot_initfs=""
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deviceinfo_initfs_compression=""
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deviceinfo_kernel_cmdline=""
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deviceinfo_legacy_uboot_load_address=""
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deviceinfo_modules_initfs=""
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# Overwritten by mkinitfs.sh
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tmpdir=""
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source_deviceinfo()
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{
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if [ ! -e "/etc/deviceinfo" ]; then
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echo "NOTE: deviceinfo (from device package) not installed yet," \
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"not building the initramfs now (it should get built later" \
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"automatically.)"
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exit 0
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fi
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# shellcheck disable=SC1091
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. /etc/deviceinfo
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}
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parse_commandline()
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{
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if [ "$1" != "-o" ]; then
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echo "postmarketos-mkinitfs"
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echo "usage: $(basename "$0") -o OUTFILE KERNELVERSION"
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exit 1
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fi
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outfile=$2
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outfile_extra=$2-extra
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kernel=$3
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}
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# Verify that each file required by the installed hooks exists and exit with an
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# error if they don't.
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check_hook_files()
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{
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for file in "/etc/postmarketos-mkinitfs/files"/*.files; do
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[ -f "$file" ] || continue
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while IFS= read -r line; do
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if ! [ -f "$line" ]; then
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echo "ERROR: File ${line} specified in ${file} does not exist!"
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exit 1
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fi
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done < "$file"
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done
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}
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create_folders()
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{
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for dir in /bin /sbin /usr/bin /usr/sbin /proc /sys /dev /tmp /lib \
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/boot /sysroot /etc; do
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mkdir -p "$tmpdir$dir"
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done
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}
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get_modules_by_globs()
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{
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globs="
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# base.modules
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kernel/drivers/block/loop.ko
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kernel/fs/overlayfs
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# cryptsetup.modules
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kernel/crypto/*
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kernel/arch/*/crypto/*
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kernel/drivers/md/dm-crypt.ko
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# required for modprobe
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modules.*
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"
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for glob in $globs; do
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for file in /lib/modules/$kernel/$glob; do
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if [ -d "$file" ]; then
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find "$file" -type f
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elif [ -e "$file" ]; then
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echo "$file"
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fi
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done
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done
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}
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# Read a modules-load.d style file into a single line. The file is expected to
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# have empty lines, lines starting with "#" that are comments or one word in
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# the line. The resulting parsed line is printed to stdout.
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# $1: file to parse
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parse_file_as_line()
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{
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_first="true"
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while IFS= read -r line; do
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case "$line" in
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""|"#"*)
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# Comment or empty line, ignore
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;;
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*)
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if [ "$_first" = "true" ]; then
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_first="false"
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else
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printf " "
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fi
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printf "%s" "$line"
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;;
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esac
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done < "$1"
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}
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# Parse modules by name from deviceinfo and from these files:
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# /etc/postmarketos-mkinitfs/modules/*.modules. The postmarketos-mkinitfs
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# package installs a 00-default.modules there.
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# Resolved kernel module paths get printed to stdout, informative logging to
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# stderr.
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# NOTE: This does not work with busybox' modprobe. That's why
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# postmarketos-mkinitfs depends on kmod.
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get_modules_by_name()
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{
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{
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echo "Scanning kernel module dependencies..."
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echo "NOTE: ** modprobe warnings below can be ignored ** if your device does not run the"
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echo "mainline kernel yet (most devices!) or if the related kernel options are enabled"
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echo "with 'y' instead of 'm' (module)."
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} >&2
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MODULES="$deviceinfo_modules_initfs"
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echo " - deviceinfo: $deviceinfo_modules_initfs" >&2
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for file in "/etc/postmarketos-mkinitfs/modules/"*.modules; do
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[ -f "$file" ] || continue
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_modules_file="$(parse_file_as_line "$file")"
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echo " - $(basename "$file"): $_modules_file" >&2
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MODULES="$MODULES $_modules_file"
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done
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# shellcheck disable=SC2086
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modprobe \
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-a \
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--dry-run \
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--show-depends \
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--set-version="$kernel" \
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$MODULES \
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| sort -u \
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| cut -d ' ' -f 2
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}
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get_modules()
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{
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get_modules_by_globs
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get_modules_by_name
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}
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# Get the paths to all binaries and their dependencies
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get_binaries()
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{
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BINARIES="
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/bin/busybox
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/bin/busybox-extras
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/usr/sbin/telnetd
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/sbin/kpartx
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"
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for file in "/etc/postmarketos-mkinitfs/files"/*.files; do
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[ -f "$file" ] || continue
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while IFS= read -r line; do
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BINARIES="${BINARIES} ${line}"
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done < "$file"
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done
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# shellcheck disable=SC2086
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sudo -u nobody lddtree -l $BINARIES | sort -u
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}
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# Collect non-binary files for osk-sdl and its dependencies
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# This gets called as $(get_osk_config), so the exit code can be checked/handled.
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get_osk_config()
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{
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fontpath=$(awk '/^keyboard-font/{print $3}' /etc/osk.conf)
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if [ ! -f "$fontpath" ]; then
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echo "ERROR: failed to parse 'keyboard-font' from osk-sdl config!"
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exit 1
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fi
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ret="
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/etc/osk.conf
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/etc/ts.conf
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/etc/pointercal
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/etc/fb.modes
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/etc/directfbrc
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$fontpath
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"
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echo "${ret}"
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}
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get_binaries_extra()
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{
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BINARIES_EXTRA="
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$(find /usr/lib/directfb-* -name '*.so')
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/lib/libz.so.1
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/sbin/cryptsetup
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/sbin/dmsetup
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/sbin/e2fsck
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/usr/bin/charging-sdl
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/usr/bin/osk-sdl
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/usr/lib/libGL.so.1
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/usr/lib/libts*
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/usr/lib/ts/*
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/usr/sbin/parted
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/usr/sbin/resize2fs
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/usr/sbin/thd
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"
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tmp1=$(mktemp /tmp/mkinitfs.XXXXXX)
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get_binaries > "$tmp1"
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tmp2=$(mktemp /tmp/mkinitfs.XXXXXX)
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# shellcheck disable=SC2086
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sudo -u nobody lddtree -l $BINARIES_EXTRA | sort -u > "$tmp2"
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ret=$(comm -13 "$tmp1" "$tmp2")
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rm "$tmp1" "$tmp2"
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echo "${ret}"
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}
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# Copy files to the destination specified
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# $1: files
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# $2: destination
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copy_files()
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{
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for file in $1; do
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[ -e "$file" ] || continue
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cp -a --parents "$file" "$2"
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done
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}
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create_device_nodes()
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{
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mknod -m 666 "$tmpdir/dev/null" c 1 3
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mknod -m 644 "$tmpdir/dev/random" c 1 8
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mknod -m 644 "$tmpdir/dev/urandom" c 1 9
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}
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replace_init_variables()
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{
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sed -i "s:@INITRAMFS_EXTRA@:${outfile_extra}:g" "$tmpdir/init"
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}
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# Create a cpio image of the specified folder
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# $1: folder
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# $2: outfile
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create_cpio_image()
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{
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if ! cd "$1"; then
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echo "ERROR: failed to cd to '$1'"
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exit 1
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fi
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[ -z "$deviceinfo_initfs_compression" ] && deviceinfo_initfs_compression='gzip -1'
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find . -print0 \
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| cpio --quiet -o -0 -H newc \
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| $deviceinfo_initfs_compression > "$2"
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}
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# Required command check with useful error message
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# $1: command (e.g. "mkimage")
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# $2: package (e.g. "uboot-tools")
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# $3: related deviceinfo variable (e.g. "generate_bootimg")
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require_package()
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{
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[ "$(command -v "$1")" = "" ] || return
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echo "ERROR: 'deviceinfo_$3' is set, but the package '$2' was not"
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echo "installed! Please add '$2' to the depends= line of your device's"
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echo "APKBUILD. See also: <https://postmarketos.org/deviceinfo>"
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exit 1
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}
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# Legacy u-boot images
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create_uboot_files()
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{
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arch="arm"
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if [ "${deviceinfo_arch}" = "aarch64" ]; then
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arch="arm64"
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fi
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[ "${deviceinfo_generate_legacy_uboot_initfs}" = "true" ] || return
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require_package "mkimage" "uboot-tools" "generate_legacy_uboot_initfs"
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echo "==> initramfs: creating uInitrd"
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# shellcheck disable=SC2039
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mkimage -A $arch -T ramdisk -C none -n uInitrd -d "$outfile" \
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"${outfile/initramfs-/uInitrd-}" || exit 1
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echo "==> kernel: creating uImage"
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# shellcheck disable=SC2039
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kernelfile="${outfile/initramfs-/vmlinuz-}"
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if [ "${deviceinfo_append_dtb}" = "true" ]; then
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kernelfile="${kernelfile}-dtb"
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fi
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if [ -z "$deviceinfo_legacy_uboot_load_address" ]; then
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deviceinfo_legacy_uboot_load_address="80008000"
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fi
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# shellcheck disable=SC2039
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mkimage -A $arch -O linux -T kernel -C none -a "$deviceinfo_legacy_uboot_load_address" \
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-e "$deviceinfo_legacy_uboot_load_address" \
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-n postmarketos -d "$kernelfile" "${outfile/initramfs-/uImage-}" || exit 1
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}
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# Android devices
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create_bootimg()
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{
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[ "${deviceinfo_generate_bootimg}" = "true" ] || return
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require_package "mkbootimg-osm0sis" "mkbootimg" "generate_bootimg"
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echo "==> initramfs: creating boot.img"
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_base="${deviceinfo_flash_offset_base}"
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[ -z "$_base" ] && _base="0x10000000"
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# shellcheck disable=SC2039
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kernelfile="${outfile/initramfs-/vmlinuz-}"
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if [ "${deviceinfo_append_dtb}" = "true" ]; then
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kernelfile="${kernelfile}-dtb"
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fi
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if [ "${deviceinfo_bootimg_mtk_mkimage}" = "true" ]; then
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kernelfile="${kernelfile}-mtk"
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fi
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_second=""
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if [ "${deviceinfo_bootimg_dtb_second}" = "true" ]; then
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if [ -z "${deviceinfo_dtb}" ]; then
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echo "ERROR: deviceinfo_bootimg_dtb_second is set, but"
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echo "'deviceinfo_dtb' is missing. Set 'deviceinfo_dtb'"
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echo "to the device tree blob for your device."
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echo "See also: <https://postmarketos.org/deviceinfo>"
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exit 1
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fi
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dtb="/usr/share/dtb/${deviceinfo_dtb}.dtb"
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_second="--second $dtb"
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if ! [ -e "$dtb" ]; then
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echo "ERROR: File not found: $dtb. Please set 'deviceinfo_dtb'"
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echo "to the relative path to the device tree blob for your"
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echo "device (without .dtb)."
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echo "See also: <https://postmarketos.org/deviceinfo>"
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exit 1
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fi
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fi
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_dt=""
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if [ "${deviceinfo_bootimg_qcdt}" = "true" ]; then
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_dt="--dt /boot/dt.img"
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if ! [ -e "/boot/dt.img" ]; then
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echo "ERROR: File not found: /boot/dt.img, but"
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echo "'deviceinfo_bootimg_qcdt' is set. Please verify that your"
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echo "device is a QCDT device by analyzing the boot.img file"
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echo "(e.g. 'pmbootstrap bootimg_analyze path/to/twrp.img')"
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echo "and based on that, set the deviceinfo variable to false or"
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echo "adjust your linux APKBUILD to properly generate the dt.img"
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echo "file. See also: <https://postmarketos.org/deviceinfo>"
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exit 1
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fi
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fi
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# shellcheck disable=SC2039 disable=SC2086
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mkbootimg-osm0sis \
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--kernel "${kernelfile}" \
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--ramdisk "$outfile" \
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--base "${_base}" \
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--second_offset "${deviceinfo_flash_offset_second}" \
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--cmdline "${deviceinfo_kernel_cmdline}" \
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--kernel_offset "${deviceinfo_flash_offset_kernel}" \
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--ramdisk_offset "${deviceinfo_flash_offset_ramdisk}" \
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--tags_offset "${deviceinfo_flash_offset_tags}" \
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--pagesize "${deviceinfo_flash_pagesize}" \
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${_second} \
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${_dt} \
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-o "${outfile/initramfs-/boot.img-}" || exit 1
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if [ "${deviceinfo_bootimg_blobpack}" = "true" ]; then
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echo "==> initramfs: creating blob"
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# shellcheck disable=SC2039
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blobpack "${outfile/initramfs-/blob-}" LNX \
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"${outfile/initramfs-/boot.img-}" || exit 1
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fi
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if [ "${deviceinfo_bootimg_append_seandroidenforce}" = "true" ]; then
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echo "==> initramfs: appending 'SEANDROIDENFORCE' to boot.img"
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# shellcheck disable=SC2039 disable=SC2039
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echo -n "SEANDROIDENFORCE" >> "${outfile/initramfs-/boot.img-}"
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fi
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}
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# Append the correct device tree to the linux image file or copy the dtb to the boot partition
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append_or_copy_dtb()
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{
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[ -n "${deviceinfo_dtb}" ] || return
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echo "==> kernel: device-tree blob operations"
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dtb=""
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for filename in $deviceinfo_dtb; do
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if ! [ -e "/usr/share/dtb/$filename.dtb" ]; then
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echo "ERROR: File not found: /usr/share/dtb/$filename.dtb"
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exit 1
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fi
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dtb="$dtb /usr/share/dtb/$filename.dtb"
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done
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# shellcheck disable=SC2039
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kernel="${outfile/initramfs-/vmlinuz-}"
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if [ "${deviceinfo_append_dtb}" = "true" ]; then
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echo "==> kernel: appending device-tree ${deviceinfo_dtb}"
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# shellcheck disable=SC2086
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cat "$kernel" $dtb > "${kernel}-dtb"
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else
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echo "==> kernel: copying dtb ${deviceinfo_dtb} to boot partition"
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# shellcheck disable=SC2086
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cp $dtb "$(dirname "${outfile}")"
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fi
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}
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# Add Mediatek header to kernel & initramfs
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add_mtk_header()
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{
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[ "${deviceinfo_bootimg_mtk_mkimage}" = "true" ] || return
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require_package "mtk-mkimage" "mtk-mkimage" "bootimg_mtk_mkimage"
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echo "==> initramfs: adding Mediatek header"
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mv "$outfile" "$outfile-orig"
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mtk-mkimage ROOTFS "$outfile-orig" "$outfile"
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rm "$outfile-orig"
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echo "==> kernel: adding Mediatek header"
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# shellcheck disable=SC2039
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kernel="${outfile/initramfs-/vmlinuz-}"
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rm -f "${kernel}-mtk"
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mtk-mkimage KERNEL "$kernel" "${kernel}-mtk"
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}
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# Create the initramfs-extra archive
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# $1: outfile
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generate_initramfs_extra()
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{
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echo "==> initramfs: creating $1"
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osk_conf="$(get_osk_config)"
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if [ $? -eq 1 ]; then
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echo "ERROR: Font specified in /etc/osk.conf does not exist!"
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exit 1
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fi
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# Set up initramfs-extra in temp folder
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tmpdir_extra=$(mktemp -d /tmp/mkinitfs.XXXXXX)
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mkdir -p "$tmpdir_extra"
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copy_files "$(get_binaries_extra)" "$tmpdir_extra"
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copy_files "$osk_conf" "$tmpdir_extra"
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create_cpio_image "$tmpdir_extra" "$1.new"
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rm -rf "$tmpdir_extra"
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# Replace old initramfs-extra *after* we are done to make sure
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# it does not become corrupted if something goes wrong.
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mv "$1.new" "$1"
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}
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