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https://github.com/linuxkit/linuxkit.git
synced 2026-01-22 22:49:13 +00:00
7d14547e87
- simplify the process by having the riddler container build the rootfs and config - output tarred up rootfs and config.json as otherwise file ownership not preserved - allow easy build of a collection of container tarballs with another conversion script This makes it easy to choose which container images you want and just convert any set to a initrd image ``` tar cf - container1.tar container2.tar | docker run -i tartar2initrd > initrd.img ``` Next stage will use a manifest to select the ones to add for each edition. Signed-off-by: Justin Cormack <justin.cormack@docker.com>
41 lines
669 B
Bash
Executable File
41 lines
669 B
Bash
Executable File
#!/bin/sh
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set -e
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mkdir -p /tmp/input0 /tmp/input
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cd /tmp/input0
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# outer tarball
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bsdtar xf -
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cd /tmp/input
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# inner tarballs
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find /tmp/input0 \( -name '*.tar' -or -name '*.tgz' -or -name '*.tar.gz' \) -exec bsdtar xf '{}' \;
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find . | cpio -H newc -o | gzip -9 > ../initrd.img
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cd /tmp
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SIZE=$(stat -c "%s" initrd.img)
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SIZE4=$(( $SIZE / 4 \* 4 ))
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DIFF=$(( $SIZE - $SIZE4 ))
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[ $DIFF -ne 0 ] && DIFF=$(( 4 - $DIFF ))
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dd if=/dev/zero bs=1 count=$DIFF of=zeropad 2>/dev/null
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cat zeropad >> initrd.img
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SIZE=$(stat -c "%s" initrd.img)
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SIZE4=$(( $SIZE / 4 \* 4 ))
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DIFF=$(( $SIZE - $SIZE4 ))
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if [ $DIFF -ne 0 ]
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then
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echo "Bad alignment" >2
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exit 1
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fi
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cat initrd.img
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