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| author | Norbert Lange <nolange79@gmail.com> | 2020-07-29 00:10:37 +0200 |
|---|---|---|
| committer | Norbert Lange <nolange79@gmail.com> | 2020-07-29 00:53:38 +0200 |
| commit | e94f410c71e90598b4fabca3970c7f282b5bd0a0 (patch) | |
| tree | 610c29a38e90b51953f9e8d27a0b11f9a7ce0528 | |
| parent | 482897b9a6001c69b16c651d4bc5b3a49a28d40f (diff) | |
un-,mkinitramfs: add support for zstd
Add support for zstd compression and decompression.
Always use multithreaded compression, as zstd still
generates identical archives.
The zstd cmdline tool is usually able to decompress
gzip, xz, lzma and lz4 so make sure to try the tool
early.
Signed-off-by: Norbert Lange <nolange79@gmail.com>
| -rw-r--r-- | conf/initramfs.conf | 2 | ||||
| -rwxr-xr-x | mkinitramfs | 1 | ||||
| -rwxr-xr-x | unmkinitramfs | 2 |
3 files changed, 4 insertions, 1 deletions
diff --git a/conf/initramfs.conf b/conf/initramfs.conf index dd76996..1d782f3 100644 --- a/conf/initramfs.conf +++ b/conf/initramfs.conf @@ -38,7 +38,7 @@ BUSYBOX=auto KEYMAP=n # -# COMPRESS: [ gzip | bzip2 | lz4 | lzma | lzop | xz ] +# COMPRESS: [ gzip | bzip2 | lz4 | lzma | lzop | xz | zstd ] # COMPRESS=gzip diff --git a/mkinitramfs b/mkinitramfs index bb902f8..d66a047 100755 --- a/mkinitramfs +++ b/mkinitramfs @@ -185,6 +185,7 @@ gzip) # If we're doing a reproducible build, use gzip -n fi ;; lz4) compress="lz4 -9 -l" ;; +zstd) compress="zstd -q -19 -T0" ;; xz) compress="xz --check=crc32" # If we're not doing a reproducible build, enable multithreading test -z "${SOURCE_DATE_EPOCH}" && compress="$compress --threads=0" diff --git a/unmkinitramfs b/unmkinitramfs index 3f8c75d..d1226c3 100755 --- a/unmkinitramfs +++ b/unmkinitramfs @@ -31,6 +31,8 @@ xcpio() if gzip -t "$archive" >/dev/null 2>&1 ; then gzip -c -d "$archive" + elif zstd -q -c -t "$archive" >/dev/null 2>&1 ; then + zstd -q -c -d "$archive" elif xzcat -t "$archive" >/dev/null 2>&1 ; then xzcat "$archive" elif lz4cat -t < "$archive" >/dev/null 2>&1 ; then |