only use zstd for compression and decompression

CHANGELOG

@@ -12,6 +12,7 @@ cpio:
 - create new base_ hooks
 - added error message on failed _binary adding
 - added message about used config file
+- only allow to use zstd compression/decompression
 setup:
 changed default installation path to /mnt/install
 2023.10 Highlights:

etc/archboot/aarch64-init.conf

@@ -2,11 +2,4 @@
 # SPDX-License-Identifier: GPL-3.0-or-later
 _KERNEL="/boot/Image.gz"
 _HOOKS=(base_common base_common_mods base_init base_init_mods block_mods)
-
-# COMPRESSION
-# Use 'cat' to create an uncompressed image.
-# Possible compressors: cat gzip bzip2 lzma xz lzop lz4 zstd
-_COMP="zstd"
-# Additional options for the compressor
-_COMP_OPTS=(-19)
 # vim: set ft=sh ts=4 sw=4 et:

etc/archboot/aarch64-latest.conf

@@ -3,11 +3,4 @@
 _KERNEL="/boot/Image.gz"
 _HOOKS=(base_common base_common_mods base_common_system base_common_system_mods
          kexec kms_mods installer_common licenses net_common net_mods remote)
-
-# COMPRESSION
-# Use 'cat' to create an uncompressed image.
-# Possible compressors: cat gzip bzip2 lzma xz lzop lz4 zstd
-_COMP="zstd"
-# Additional options for the compressor
-_COMP_OPTS=(-19)
 # vim: set ft=sh ts=4 sw=4 et:

etc/archboot/aarch64-local.conf

@@ -3,11 +3,4 @@
 _KERNEL="/boot/Image.gz"
 _HOOKS=(base_common base_common_mods base_common_system base_common_system_mods
         cache installer_common kexec kms_mods licenses)
-
-# COMPRESSION
-# Use 'cat' to create an uncompressed image.
-# Possible compressors: cat gzip bzip2 lzma xz lzop lz4 zstd
-_COMP="zstd"
-# Additional options for the compressor
-_COMP_OPTS=(-19)
 # vim: set ft=sh ts=4 sw=4 et:

etc/archboot/aarch64-update_installer.conf

@@ -9,11 +9,4 @@ _HOOKS=(cache cache_cleanup firmware firmware_mods firmware_cleanup base_common_
         devicemapper efi filesystems filesystems_cleanup installer_common installer
         kexec licenses lshw lvm2 mdadm motd neovim net net_cleanup net_common pciutils
         remote secureboot smartmontools usbutils vconsole wireless)
-
-# COMPRESSION
-# Use 'cat' to create an uncompressed image.
-# Possible compressors: cat gzip bzip2 lzma xz lzop lz4 zstd
-_COMP="zstd"
-# Additional options for the compressor
-#_COMP_OPTS=()
 # vim: set ft=sh ts=4 sw=4 et:

etc/archboot/aarch64.conf

@@ -8,11 +8,4 @@ _HOOKS=(base_common base_common_mods base_common_system base_common_system_mods
         licenses lshw lvm2 mdadm mdadm_mods motd neovim net_common net net_mods
         pciutils remote secureboot smartmontools usbutils vconsole wireless
         wireless_mods)
-
-# COMPRESSION
-# Use 'cat' to create an uncompressed image.
-# Possible compressors: cat gzip bzip2 lzma xz lzop lz4 zstd
-_COMP="zstd"
-# Additional options for the compressor
-_COMP_OPTS=(-19)
 # vim: set ft=sh ts=4 sw=4 et:

etc/archboot/riscv64-init.conf

@@ -2,11 +2,4 @@
 # SPDX-License-Identifier: GPL-3.0-or-later
 _KERNEL="/usr/lib/modules/*/vmlinuz"
 _HOOKS=(base_common base_common_mods base_init base_init_mods block_mods)
-
-# COMPRESSION
-# Use 'cat' to create an uncompressed image.
-# Possible compressors: cat gzip bzip2 lzma xz lzop lz4 zstd
-_COMP="zstd"
-# Additional options for the compressor
-_COMP_OPTS=(-19)
 # vim: set ft=sh ts=4 sw=4 et:

etc/archboot/riscv64.conf

@@ -7,11 +7,4 @@ _HOOKS=(base_common base_common_mods base_common_system base_common_system_mods
         installer_common installer kexec kms_mods licenses lshw lvm2 mdadm
         mdadm_mods motd neovim net_common net net_mods pciutils remote
         secureboot smartmontools usbutils vconsole wireless wireless_mods)
-
-# COMPRESSION
-# Use 'cat' to create an uncompressed image.
-# Possible compressors: cat gzip bzip2 lzma xz lzop lz4 zstd
-_COMP="zstd"
-# Additional options for the compressor
-_COMP_OPTS=(-19)
 # vim: set ft=sh ts=4 sw=4 et:

etc/archboot/x86_64-init.conf

@@ -2,11 +2,4 @@
 # SPDX-License-Identifier: GPL-3.0-or-later
 _KERNEL="/usr/lib/modules/*/vmlinuz"
 _HOOKS=(base_common base_common_mods base_init base_init_mods block_mods)
-
-# COMPRESSION
-# Use 'cat' to create an uncompressed image.
-# Possible compressors: cat gzip bzip2 lzma xz lzop lz4 zstd
-_COMP="zstd"
-# Additional options for the compressor
-_COMP_OPTS=(-19)
 # vim: set ft=sh ts=4 sw=4 et:

etc/archboot/x86_64-latest.conf

@@ -3,11 +3,4 @@
 _KERNEL="/usr/lib/modules/*/vmlinuz"
 _HOOKS=(base_common base_common_mods base_common_system base_common_system_mods
          kexec kms_mods installer_common licenses net_common net_mods remote)
-
-# COMPRESSION
-# Use 'cat' to create an uncompressed image.
-# Possible compressors: cat gzip bzip2 lzma xz lzop lz4 zstd
-_COMP="zstd"
-# Additional options for the compressor
-_COMP_OPTS=(-19)
 # vim: set ft=sh ts=4 sw=4 et:

etc/archboot/x86_64-local.conf

@@ -3,11 +3,4 @@
 _KERNEL="/usr/lib/modules/*/vmlinuz"
 _HOOKS=(base_common base_common_mods base_common_system base_common_system_mods
         cache installer_common kexec kms_mods licenses)
-
-# COMPRESSION
-# Use 'cat' to create an uncompressed image.
-# Possible compressors: cat gzip bzip2 lzma xz lzop lz4 zstd
-_COMP="zstd"
-# Additional options for the compressor
-_COMP_OPTS=(-19)
 # vim: set ft=sh ts=4 sw=4 et:

etc/archboot/x86_64-update_installer.conf

@@ -9,11 +9,4 @@ _HOOKS=(cache cache_cleanup firmware firmware_mods firmware_cleanup base_common_
         devicemapper efi filesystems filesystems_cleanup installer_common installer
         kexec licenses lshw lvm2 mdadm motd neovim net net_cleanup net_common pciutils
         remote secureboot smartmontools usbutils vconsole wireless)
-
-# COMPRESSION
-# Use 'cat' to create an uncompressed image.
-# Possible compressors: cat gzip bzip2 lzma xz lzop lz4 zstd
-_COMP="zstd"
-# Additional options for the compressor
-#_COMP_OPTS=()
 # vim: set ft=sh ts=4 sw=4 et:

etc/archboot/x86_64.conf

@@ -8,11 +8,4 @@ _HOOKS=(base_common base_common_mods base_common_system base_common_system_mods
         licenses lshw lvm2 mdadm mdadm_mods motd neovim net_common net net_mods
         pciutils remote secureboot smartmontools usbutils vconsole wireless
         wireless_mods)
-
-# COMPRESSION
-# Use 'cat' to create an uncompressed image.
-# Possible compressors: cat gzip bzip2 lzma xz lzop lz4 zstd
-_COMP="zstd"
-# Additional options for the compressor
-_COMP_OPTS=(-19)
 # vim: set ft=sh ts=4 sw=4 et:

usr/lib/archboot/cpio/cpio.sh

@@ -223,24 +223,14 @@ _install_libs() {
 }
 
 _create_cpio() {
-    case "${_COMP}" in
+    echo "Creating zstd compressed image..."
-        cat)    echo "Creating uncompressed image..."
-                unset _COMP_OPTS
-                ;;
-        *)      echo "Creating ${_COMP} compressed image..."
-                ;;&
-        xz)     _COMP_OPTS=('-T0' '--check=crc32' "${_COMP_OPTS[@]}")
-                ;;
-        lz4)    _COMP_OPTS=('-l' "${_COMP_OPTS[@]}")
-                ;;
-        zstd)   _COMP_OPTS=('-T0' "${_COMP_OPTS[@]}")
-                ;;
-    esac
     pushd "${_ROOTFS}" >"${_NO_LOG}" || return
     # Reproducibility: set all timestamps to 0
     find . -mindepth 1 -execdir touch -hcd "@0" "{}" +
-    find . -mindepth 1 -printf '%P\0' | sort -z | LANG=C bsdtar --null -cnf - -T - |
+    # use zstd only it has best compression and decompression
-            LANG=C bsdtar --null -cf - --format=newc @- |
+    find . -mindepth 1 -printf '%P\0' | sort -z |
-            ${_COMP} "${_COMP_OPTS[@]}" > "${_GENERATE_IMAGE}" || _abort "Image creation failed!"
+        LANG=C bsdtar --null -cnf - -T - |
+        LANG=C bsdtar --null -cf - --format=newc @- |
+        zstd -T0 -19 > "${_GENERATE_IMAGE}" || _abort "Image creation failed!"
     popd >"${_NO_LOG}" || return
 }

usr/lib/archboot/release.sh

@@ -32,25 +32,15 @@ _create_initrd_dir() {
 }
 
 _compress_initrd() {
-   case "${_COMP}" in
+    echo "Creating zstd compressed image: ${1}"
-        cat)    echo "Creating uncompressed image: ${1}"
-                unset _COMP_OPTS
-                ;;
-        *)      echo "Creating ${_COMP} compressed image: ${1}"
-                ;;&
-        xz)     _COMP_OPTS=('-T0' '--check=crc32' "${_COMP_OPTS[@]}")
-                ;;
-        lz4)    _COMP_OPTS=('-l' "${_COMP_OPTS[@]}")
-                ;;
-        zstd)   _COMP_OPTS=('-T0' "${_COMP_OPTS[@]}")
-                ;;
-    esac
     pushd "${_W_DIR}/tmp/initrd" >"${_NO_LOG}" || return
     # Reproducibility: set all timestamps to 0
     find . -mindepth 1 -execdir touch -hcd "@0" "{}" +
-    find . -mindepth 1 -printf '%P\0' | sort -z | LANG=C bsdtar --null -cnf - -T - |
+    # use zstd only it has best compression and decompression
-            LANG=C bsdtar --null -cf - --format=newc @- |
+    find . -mindepth 1 -printf '%P\0' | sort -z |
-            ${_COMP} "${_COMP_OPTS[@]}" > "../../${1}" || exit 1
+        LANG=C bsdtar --null -cnf - -T - |
+        LANG=C bsdtar --null -cf - --format=newc @- |
+        zstd -T0 -19 > "../../${1}" || exit 1
     popd >"${_NO_LOG}" || return
     echo "Build complete."
 }

usr/share/archboot/doc/archboot.html

@@ -15,7 +15,7 @@
 <body>
 <p><span><img src="logo.png" alt="Logo"></span></p>
 <h1>Archboot Project | <a href="https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&amp;hosted_button_id=Z7GXKW4MKHK7C"><img src="donate.png" alt="Donate"></a></h1>
-<p><strong>&copy; 2006 - 2023 | <a href=mailto:tpowa@archlinux.org>Tobias Powalowski</a></strong> | Arch Linux Developer <strong><a href="https://archlinux.org/people/developers/#tpowa">tpowa</a></strong><br><strong>Last update: 14.11.2023 08:59</strong></p>
+<p><strong>&copy; 2006 - 2023 | <a href=mailto:tpowa@archlinux.org>Tobias Powalowski</a></strong> | Arch Linux Developer <strong><a href="https://archlinux.org/people/developers/#tpowa">tpowa</a></strong><br><strong>Last update: 15.11.2023 11:18</strong></p>
 <nav id="TOC" role="doc-toc">
 <ul>
 <li><a href="#introduction" id="toc-introduction"><strong><span class="toc-section-number">1.</span> Introduction</strong></a></li>
@@ -1089,14 +1089,6 @@ Options supported in <strong>/etc/archboot/&lt;profile&gt;.conf</strong> files:<
 <td>_HOOKS=()</td>
 <td>Array that defines the used hooks</td>
 </tr>
-<tr class="odd">
-<td>_COMP=""</td>
-<td>defines used compression method</td>
-</tr>
-<tr class="even">
-<td>_COMP_OPTS=()</td>
-<td>Array that defines any options for the compressor</td>
-</tr>
 </tbody>
 </table>
 Functions supported in <strong>/usr/lib/archboot/cpio/hooks/&lt;hook&gt;</strong> files:<br>