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add comment about cpio creation
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1 changed files with 10 additions and 1 deletions
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@ -246,9 +246,17 @@ _install_libs() {
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}
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}
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_create_cpio() {
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_create_cpio() {
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# Reproducibility:
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# set all timestamps to 0
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# fd . -u --min-depth 1 -X touch -hcd "@0"
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# Pipe needed as is, bsdcpio is not reproducible!
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# cpio, pax, tar are slower than bsdtar!
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# LC_ALL=C.UTF-8 bsdtar --null -cnf - -T - |
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# LC_ALL=C.UTF-8 bsdtar --null -cf - --format=newc @-
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# Result:
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# Multi CPIO archive, extractable with 3cpio
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pushd "${_ROOTFS}" >"${_NO_LOG}" || return
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pushd "${_ROOTFS}" >"${_NO_LOG}" || return
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echo "Creating initramfs:"
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echo "Creating initramfs:"
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# Reproducibility: set all timestamps to 0
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fd . -u --min-depth 1 -X touch -hcd "@0"
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fd . -u --min-depth 1 -X touch -hcd "@0"
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echo "Appending directories..."
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echo "Appending directories..."
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fd . -u -t d -0 | sort -z |
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fd . -u -t d -0 | sort -z |
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@ -258,6 +266,7 @@ _create_cpio() {
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fd . -t f -t l -u -e 'bz2' -e 'gz' -e 'xz' -e 'zst' --min-depth 1 -0 | sort -z |
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fd . -t f -t l -u -e 'bz2' -e 'gz' -e 'xz' -e 'zst' --min-depth 1 -0 | sort -z |
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LC_ALL=C.UTF-8 bsdtar --null -cnf - -T - |
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LC_ALL=C.UTF-8 bsdtar --null -cnf - -T - |
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LC_ALL=C.UTF-8 bsdtar --null -cf - --format=newc @- >> "${_GENERATE_IMAGE}" || _abort "Image creation failed!"
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LC_ALL=C.UTF-8 bsdtar --null -cf - --format=newc @- >> "${_GENERATE_IMAGE}" || _abort "Image creation failed!"
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echo "Removing compressed files..."
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fd . -u -e 'bz2' -e 'gz' -e 'xz' -e 'zst' --min-depth 1 -X rm
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fd . -u -e 'bz2' -e 'gz' -e 'xz' -e 'zst' --min-depth 1 -X rm
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fd . -u --min-depth 1 -X touch -hcd "@0"
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fd . -u --min-depth 1 -X touch -hcd "@0"
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echo "Appending zstd compressed image..."
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echo "Appending zstd compressed image..."
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