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0fad3d7171
Converted build_library/build_gpt.sh from a shell script to a shell library defining a function to replace the script. Converted build_library/emit_gpt_scripts.sh into a shell function that is defined in build_library/build_gpt.sh. BUG=chromium-os:17390 TEST=build_image TEST=inspect and run pack_ and unpack_partitions.sh on new image Change-Id: Ifdcb58f492f871e120cbec9c67bdeab94d1a4d3f Reviewed-on: http://gerrit.chromium.org/gerrit/4866 Reviewed-by: Vince Laviano <vlaviano@chromium.org> Tested-by: Richard Barnette <jrbarnette@chromium.org>
91 lines
2.4 KiB
Bash
Executable File
91 lines
2.4 KiB
Bash
Executable File
# Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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emit_gpt_scripts() {
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local image="$1"
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local dir="$2"
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local pack="$dir/pack_partitions.sh"
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local unpack="$dir/unpack_partitions.sh"
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cat >"$unpack" <<HEADER
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#!/bin/bash -eu
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# File automatically generated. Do not edit.
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TARGET=\${1:-}
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if [[ -z "\$TARGET" ]]; then
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echo "Usage: \$0 DEVICE" 1>&2
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exit 1
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fi
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set -x
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HEADER
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$GPT show "$image" | sed -e 's/^/# /' >>"$unpack"
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cp "$unpack" "$pack"
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$GPT show -q "$image" |
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while read start size part x; do
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local file="part_$part"
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local target="\"\$TARGET\""
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local dd_args="bs=512 count=$size"
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echo "dd if=$target of=$file $dd_args skip=$start" >>"$unpack"
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echo "dd if=$file of=$target $dd_args seek=$start conv=notrunc" \
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>>"$pack"
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done
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chmod +x "$unpack" "$pack"
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}
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build_gpt() {
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local outdev="$1"
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local rootfs_img="$2"
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local kernel_img="$3"
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local stateful_img="$4"
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local esp_img="$5"
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# We'll need some code to put in the PMBR, for booting on legacy BIOS.
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local pmbr_img
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if [ "$ARCH" = "arm" ]; then
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pmbr_img=/dev/zero
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elif [ "$ARCH" = "x86" ]; then
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pmbr_img=$(readlink -f /usr/share/syslinux/gptmbr.bin)
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else
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error "Unknown architecture: $ARCH"
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return 1
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fi
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# Create the GPT. This has the side-effect of setting some global vars
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# describing the partition table entries (see the comments in the source).
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install_gpt "$outdev" $(numsectors "$rootfs_img") \
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$(numsectors "$stateful_img") $pmbr_img $(numsectors "$esp_img") \
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false $FLAGS_rootfs_partition_size
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local sudo=
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if [ ! -w "$outdev" ] ; then
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# use sudo when writing to a block device.
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sudo=sudo
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fi
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# Now populate the partitions.
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echo "Copying stateful partition..."
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$sudo dd if="$stateful_img" of="$outdev" conv=notrunc bs=512 \
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seek=$START_STATEFUL
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echo "Copying kernel..."
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$sudo dd if="$kernel_img" of="$outdev" conv=notrunc bs=512 \
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seek=$START_KERN_A
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echo "Copying rootfs..."
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$sudo dd if="$rootfs_img" of="$outdev" conv=notrunc bs=512 \
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seek=$START_ROOTFS_A
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echo "Copying EFI system partition..."
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$sudo dd if="$esp_img" of="$outdev" conv=notrunc bs=512 \
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seek=$START_ESP
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# Pre-set "sucessful" bit in gpt, so we will never mark-for-death
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# a partition on an SDCard/USB stick.
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$GPT add -i 2 -S 1 "$outdev"
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}
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