From: Christian Hesse Linux 5.9 supports zstd compressed initramfs, so add support here. Signed-off-by: Christian Hesse --- PKGBUILD | 1 + lsinitcpio | 4 ++++ man/mkinitcpio.conf.5.txt | 6 +++--- mkinitcpio.conf | 1 + 4 files changed, 9 insertions(+), 3 deletions(-) diff --git a/PKGBUILD b/PKGBUILD index 3536a48..c7e1ed5 100644 --- a/PKGBUILD +++ b/PKGBUILD @@ -15,6 +15,7 @@ optdepends=('xz: Use lzma or xz compression for the initramfs image' 'bzip2: Use bzip2 compression for the initramfs image' 'lzop: Use lzo compression for the initramfs image' 'lz4: Use lz4 compression for the initramfs image' + 'zstd: Use zstd compression for the initramfs image' 'mkinitcpio-nfs-utils: Support for root filesystem on NFS') backup=(etc/mkinitcpio.conf) diff --git a/lsinitcpio b/lsinitcpio index bcb4a19..4715783 100755 --- a/lsinitcpio +++ b/lsinitcpio @@ -113,6 +113,10 @@ detect_filetype() { echo 'lz4 -l' return ;; + fd2fb528) + echo 'zstd' + return + ;; esac read -rd '' bytes < <(hexdump -n 3 -e '"%c"' "$1") diff --git a/man/mkinitcpio.conf.5.txt b/man/mkinitcpio.conf.5.txt index 9c8d000..9c999d7 100644 --- a/man/mkinitcpio.conf.5.txt +++ b/man/mkinitcpio.conf.5.txt @@ -54,9 +54,9 @@ Variables Defines a program to filter the generated image through. As of linux 2.6.38, the kernel understands the compression formats yielded by the *gzip*, *bzip2*, - *lz4*, *lzop*, *lzma*, and *xz* compressors. If unspecified, this setting - defaults to *gzip* compression. In order to create an uncompressed image, define - this variable as *cat*. + *lz4*, *lzop*, *lzma*, and *xz* compressors. Compression via *zstd* was added + in linux 5.9. If unspecified, this setting defaults to *gzip* compression. + In order to create an uncompressed image, define this variable as *cat*. + It's not hard to realize that a filter such as a *tac* or *rev* will cause *mkinitcpio* to report success but generate a useless image. Similarly, using a diff --git a/mkinitcpio.conf b/mkinitcpio.conf index b926b90..ba1cce3 100644 --- a/mkinitcpio.conf +++ b/mkinitcpio.conf @@ -60,6 +60,7 @@ HOOKS=(base udev autodetect modconf block filesystems keyboard fsck) #COMPRESSION="xz" #COMPRESSION="lzop" #COMPRESSION="lz4" +#COMPRESSION="zstd" # COMPRESSION_OPTIONS # Additional options for the compressor