From 7dbadcc7496b369d74db48a9180934074be488d6 Mon Sep 17 00:00:00 2001 From: tpgxyz Date: Tue, 5 Sep 2017 01:23:38 +0200 Subject: [PATCH] add support for Zstandard --- dracut-bash-completion.sh | 2 +- dracut-initramfs-restore.sh | 2 ++ dracut.8.asc | 8 ++++++++ dracut.conf.5.asc | 2 +- dracut.sh | 10 +++++++++- lsinitrd.sh | 3 +++ modules.d/99img-lib/img-lib.sh | 5 +++-- modules.d/99img-lib/module-setup.sh | 2 +- 8 files changed, 28 insertions(+), 6 deletions(-) diff --git a/dracut-bash-completion.sh b/dracut-bash-completion.sh index 09330a673..89b70f29c 100644 --- a/dracut-bash-completion.sh +++ b/dracut-bash-completion.sh @@ -29,7 +29,7 @@ _dracut() { --hardlink --nohardlink --noprefix --mdadmconf --nomdadmconf --lvmconf --nolvmconf --debug --profile --verbose --quiet --local --hostonly --no-hostonly --fstab --help --bzip2 --lzma - --xz --no-compress --gzip --list-modules --show-modules --keep + --xz -zstd --no-compress --gzip --list-modules --show-modules --keep --printsize --regenerate-all --noimageifnotneeded --early-microcode --no-early-microcode --print-cmdline --prelink --noprelink --reproducible --uefi diff --git a/dracut-initramfs-restore.sh b/dracut-initramfs-restore.sh index 0c41a59ce..947948049 100644 --- a/dracut-initramfs-restore.sh +++ b/dracut-initramfs-restore.sh @@ -31,6 +31,8 @@ elif $SKIP "$IMG" | xzcat | cpio -id --no-absolute-filenames --quiet >/dev/null; rm -f -- .need_shutdown elif $SKIP "$IMG" | lz4 -d -c | cpio -id --no-absolute-filenames --quiet >/dev/null; then rm -f -- .need_shutdown +elif $SKIP "$IMG" | zstd -d -c | cpio -id --no-absolute-filenames --quiet >/dev/null; then + rm -f -- .need_shutdown else # something failed, so we clean up echo "Unpacking of $IMG to /run/initramfs failed" >&2 diff --git a/dracut.8.asc b/dracut.8.asc index 23c53cc49..64c0207f5 100644 --- a/dracut.8.asc +++ b/dracut.8.asc @@ -432,6 +432,14 @@ Make sure your kernel has lz4 decompression support compiled in, otherwise you will not be able to boot. ==== +**--zstd**:: + Compress the generated initramfs using Zstandard. +[WARNING] +==== +Make sure your kernel has zstd decompression support compiled in, otherwise you +will not be able to boot. +==== + **--compress** __:: Compress the generated initramfs using the passed compression program. If you pass it just the name of a compression program, it will call that diff --git a/dracut.conf.5.asc b/dracut.conf.5.asc index 907a2fd44..6e8f3ebaa 100644 --- a/dracut.conf.5.asc +++ b/dracut.conf.5.asc @@ -79,7 +79,7 @@ Configuration files must have the extension .conf; other extensions are ignored. Specify additional files to include in the initramfs, separated by spaces, if they exist. -*compress=*"__{bzip2|lzma|xz|gzip|lzo|lz4|}__":: +*compress=*"__{bzip2|lzma|xz|gzip|lzo|lz4|zstd|}__":: Compress the generated initramfs using the passed compression program. If you pass it just the name of a compression program, it will call that program with known-working arguments. If you pass arguments, it will be called diff --git a/dracut.sh b/dracut.sh index 06127ca41..5ad0f4646 100755 --- a/dracut.sh +++ b/dracut.sh @@ -197,6 +197,9 @@ Creates initial ramdisk images for preloading modules --lz4 Compress the generated initramfs using lz4. Make sure that your kernel has lz4 support compiled in, otherwise you will not be able to boot. + --zstd Compress the generated initramfs using Zstandard. + Make sure that your kernel has zstd support compiled + in, otherwise you will not be able to boot. --compress [COMPRESSION] Compress the generated initramfs with the passed compression program. Make sure your kernel knows how to decompress the generated initramfs, @@ -358,6 +361,7 @@ rearrange_params() --long xz \ --long lzo \ --long lz4 \ + --long zstd \ --long no-compress \ --long gzip \ --long list-modules \ @@ -557,6 +561,7 @@ while :; do --xz) compress_l="xz";; --lzo) compress_l="lzo";; --lz4) compress_l="lz4";; + --zstd) compress_l="zstd";; --no-compress) _no_compress_l="cat";; --gzip) compress_l="gzip";; --list-modules) do_list="yes";; @@ -797,7 +802,7 @@ fi if ! [[ $compress ]]; then # check all known compressors, if none specified - for i in pigz gzip lz4 lzop lzma xz lbzip2 bzip2 cat; do + for i in pigz gzip lz4 lzop zstd lzma xz lbzip2 bzip2 cat; do command -v "$i" &>/dev/null || continue compress="$i" break @@ -837,6 +842,9 @@ case $compress in lz4) compress="lz4 -l -9" ;; + zstd) + compress="zstd -15 -q -T0" + ;; esac [[ $hostonly = yes ]] && hostonly="-h" diff --git a/lsinitrd.sh b/lsinitrd.sh index b19a66a03..f40884536 100755 --- a/lsinitrd.sh +++ b/lsinitrd.sh @@ -219,6 +219,9 @@ case $bin in $'\x89'LZO$'\0'*) CAT="lzop -d -c" ;; + $'0xFD2FB528'*) + CAT="zstd -d -c" + ;; *) if echo "test"|xz|xzcat --single-stream >/dev/null 2>&1; then CAT="xzcat --single-stream --" diff --git a/modules.d/99img-lib/img-lib.sh b/modules.d/99img-lib/img-lib.sh index 48e56ce72..437858120 100755 --- a/modules.d/99img-lib/img-lib.sh +++ b/modules.d/99img-lib/img-lib.sh @@ -8,12 +8,13 @@ # works with stdin if $1 is not set. det_archive() { # NOTE: echo -e works in ash and bash, but not dash - local bz="BZh" xz="$(echo -e '\xfd7zXZ')" gz="$(echo -e '\x1f\x8b')" + local bz="BZh" xz="$(echo -e '\xfd7zXZ')" gz="$(echo -e '\x1f\x8b')" zs="$(echo -e '0xFD2FB528')" local headerblock="$(dd ${1:+if=$1} bs=262 count=1 2>/dev/null)" case "$headerblock" in $xz*) echo "xz" ;; $gz*) echo "gzip" ;; $bz*) echo "bzip2" ;; + $zs*) echo "zstd" ;; 07070*) echo "cpio" ;; *ustar) echo "tar" ;; esac @@ -33,7 +34,7 @@ unpack_archive() { local img="$1" outdir="$2" archiver="" decompr="" local ft="$(det_archive $img)" case "$ft" in - xz|gzip|bzip2) decompr="$ft -dc" ;; + xz|gzip|bzip2|zstd) decompr="$ft -dc" ;; cpio|tar) decompr="cat";; *) return 1 ;; esac diff --git a/modules.d/99img-lib/module-setup.sh b/modules.d/99img-lib/module-setup.sh index 69346b2f1..fe1eca1a6 100755 --- a/modules.d/99img-lib/module-setup.sh +++ b/modules.d/99img-lib/module-setup.sh @@ -16,7 +16,7 @@ depends() { install() { inst_multiple tar gzip dd bash # TODO: make this conditional on a cmdline flag / config option - inst_multiple -o cpio xz bzip2 + inst_multiple -o cpio xz bzip2 zstd inst_simple "$moddir/img-lib.sh" "/lib/img-lib.sh" } -- 2.39.2