openwrtv4/target/linux/x86_64/image/gen_image_generic.sh
John Crispin 20940138ac scripts: fix wrong usage of '==' operator
[base-files] shell-scripting: fix wrong usage of '==' operator

normally the '==' is used for invoking a regex parser and is a bashism.
all of the fixes just want to compare a string. the used busybox-ash
will silently "ignore" this mistake, but make it portable/clean at least.

this patch does not change the behavior/logic of the scripts.

Signed-off-by: Bastian Bittorf <bittorf@bluebottle.com>

SVN-Revision: 42911
2014-10-14 12:21:11 +00:00

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#!/usr/bin/env bash
# Copyright (C) 2006-2012 OpenWrt.org
set -x
[ $# -eq 5 -o $# -eq 6 ] || {
echo "SYNTAX: $0 <file> <kernel size> <kernel directory> <rootfs size> <rootfs image> [<align>]"
exit 1
}
OUTPUT="$1"
KERNELSIZE="$2"
KERNELDIR="$3"
ROOTFSSIZE="$4"
ROOTFSIMAGE="$5"
ALIGN="$6"
rm -f "$OUTPUT"
head=16
sect=63
cyl=$(( ($KERNELSIZE + $ROOTFSSIZE) * 1024 * 1024 / ($head * $sect * 512)))
# create partition table
set `ptgen -o "$OUTPUT" -h $head -s $sect -p ${KERNELSIZE}m -p ${ROOTFSSIZE}m ${ALIGN:+-l $ALIGN}`
KERNELOFFSET="$(($1 / 512))"
KERNELSIZE="$(($2 / 512))"
ROOTFSOFFSET="$(($3 / 512))"
ROOTFSSIZE="$(($4 / 512))"
BLOCKS="$((($KERNELSIZE / 2) - 1))"
[ -n "$PADDING" ] && dd if=/dev/zero of="$OUTPUT" bs=512 seek="$ROOTFSOFFSET" conv=notrunc count="$ROOTFSSIZE"
dd if="$ROOTFSIMAGE" of="$OUTPUT" bs=512 seek="$ROOTFSOFFSET" conv=notrunc
[ -n "$NOGRUB" ] && exit 0
genext2fs -d "$KERNELDIR" -b "$BLOCKS" "$OUTPUT.kernel"
dd if="$OUTPUT.kernel" of="$OUTPUT" bs=512 seek="$KERNELOFFSET" conv=notrunc
rm -f "$OUTPUT.kernel"