mirror of
https://github.com/kernelkit/infix.git
synced 2026-07-22 01:13:00 +02:00
Joachim Wiberg
94fa7ea21c
Release tarballs waste ~131MB per architecture by including both rootfs.itb and rootfs.squashfs, even though rootfs.itb already contains the squashfs (itb = 4096-byte header + squashfs). This change removes rootfs.squashfs from releases and provides two solutions for users who need it: 1. utils/extract-squashfs.sh - Full-featured utility for extracting squashfs from release tarballs or .itb files. Includes validation and helpful error messages. 2. board/common/qemu/qemu.sh - Auto-extraction support. When running in initrd mode, automatically extracts rootfs.squashfs from rootfs.itb if missing. Zero user impact - ./qemu.sh just works! Space savings: ~262MB per release (2 architectures × 131MB) Fixes #858 Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
104 lines
2.6 KiB
Bash
Executable File
104 lines
2.6 KiB
Bash
Executable File
#!/bin/sh
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#
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# Extract rootfs.squashfs from a release tarball's rootfs.itb file
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#
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# Usage: extract-squashfs.sh <tarball-or-itb-file> [output-file]
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#
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set -e
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usage() {
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cat <<EOF
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Usage: $(basename "$0") <tarball-or-itb-file> [output-file]
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Extract rootfs.squashfs from a release tarball or .itb file.
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Arguments:
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<tarball-or-itb-file> Release tarball (*.tar.gz) or rootfs.itb file
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[output-file] Output squashfs file (default: rootfs.squashfs)
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Examples:
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# From release tarball
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$(basename "$0") infix-x86_64-25.09.0.tar.gz
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# From .itb file directly
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$(basename "$0") output/images/rootfs.itb
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# Custom output location
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$(basename "$0") infix-x86_64-25.09.0.tar.gz /tmp/my-rootfs.squashfs
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The script skips the 4096-byte FIT header to extract the SquashFS image.
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EOF
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}
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die() {
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echo "ERROR: $*" >&2
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exit 1
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}
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# Parse arguments
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case "$1" in
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-h|--help)
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usage
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exit 0
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;;
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"")
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usage
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exit 1
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;;
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esac
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input="$1"
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output="${2:-rootfs.squashfs}"
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[ -f "$input" ] || die "File not found: $input"
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# Detect if input is a tarball or .itb file
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case "$input" in
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*.tar.gz)
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echo "Extracting rootfs.itb from tarball..."
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itb_file=$(tar -tzf "$input" | grep -m1 'rootfs\.itb$') \
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|| die "No rootfs.itb found in tarball"
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echo "Found: $itb_file"
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echo "Extracting SquashFS (skipping 4096-byte FIT header)..."
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tar -xzOf "$input" "$itb_file" | dd bs=4096 skip=1 of="$output" 2>/dev/null \
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|| die "Failed to extract SquashFS"
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;;
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*.itb)
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echo "Extracting SquashFS from .itb file (skipping 4096-byte FIT header)..."
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dd if="$input" of="$output" bs=4096 skip=1 2>/dev/null \
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|| die "Failed to extract SquashFS"
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;;
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*)
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die "Unsupported file type. Expected *.tar.gz or *.itb"
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;;
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esac
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# Verify output
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if [ -f "$output" ]; then
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size=$(stat --format=%s "$output" 2>/dev/null || stat -f%z "$output")
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file_type=$(file "$output")
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# Try to format size nicely, fall back to bytes if numfmt not available
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if command -v numfmt >/dev/null 2>&1; then
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size_str=$(numfmt --to=iec-i --suffix=B "$size")
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else
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size_str="$size bytes"
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fi
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echo "Success! Created: $output ($size_str)"
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echo "Type: $file_type"
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# Quick sanity check for squashfs magic
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if echo "$file_type" | grep -qi squashfs; then
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echo "✓ Verified: Valid SquashFS filesystem"
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else
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echo "⚠ Warning: Output may not be a valid SquashFS image"
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exit 1
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fi
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else
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die "Failed to create output file"
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fi
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