#!/bin/sh if [ $# -lt 2 ]then	echo "Usage: headers_install.sh OUTDIR SRCDIR [FILES...]"	echo	echo "Prepares kernel header files for use by user space, by removing"	echo "all compiler.h definitions and #includes, removing any"	echo "#ifdef __KERNEL__ sections, and putting __underscores__ around"	echo "asm/inline/volatile keywords."	echo	echo "OUTDIR: directory to write each userspace header FILE to."	echo "SRCDIR: source directory where files are picked."	echo "FILES:  list of header files to operate on." 	exit 1fi # Grab arguments OUTDIR="$1"shiftSRCDIR="$1"shift # Iterate through files listed on command line FILE=trap 'rm -f "$OUTDIR/$FILE" "$OUTDIR/$FILE.sed"' EXITfor i in "$@"do	FILE="$(basename "$i")"	sed -r \		-e 's/([ \t(])(__user|__force|__iomem)[ \t]/\1/g' \		-e 's/__attribute_const__([ \t]|$)/\1/g' \		-e 's@^#include <linux/compiler.h>@@' \		-e 's/(^|[^a-zA-Z0-9])__packed([^a-zA-Z0-9_]|$)/\1__attribute__((packed))\2/g' \		-e 's/(^|[ \t(])(inline|asm|volatile)([ \t(]|$)/\1__\2__\3/g' \		-e 's@#(ifndef|define|endif[ \t]*/[*])[ \t]*_UAPI@#\1 @' \		"$SRCDIR/$i" > "$OUTDIR/$FILE.sed" || exit 1	scripts/unifdef -U__KERNEL__ -D__EXPORTED_HEADERS__ "$OUTDIR/$FILE.sed" \		> "$OUTDIR/$FILE"	[ $? -gt 1 ] && exit 1	rm -f "$OUTDIR/$FILE.sed"donetrap - EXIT