1#!/bin/sh 2# SPDX-License-Identifier: GPL-2.0 3 4if [ $# -ne 2 ] 5then 6 echo "Usage: headers_install.sh INFILE OUTFILE" 7 echo 8 echo "Prepares kernel header files for use by user space, by removing" 9 echo "all compiler.h definitions and #includes, removing any" 10 echo "#ifdef __KERNEL__ sections, and putting __underscores__ around" 11 echo "asm/inline/volatile keywords." 12 echo 13 echo "INFILE: header file to operate on" 14 echo "OUTFILE: output file which the processed header is writen to" 15 16 exit 1 17fi 18 19# Grab arguments 20INFILE=$1 21OUTFILE=$2 22TMPFILE=$OUTFILE.tmp 23 24trap 'rm -f $OUTFILE $TMPFILE' EXIT 25 26sed -E -e ' 27 s/([[:space:](])(__user|__force|__iomem)[[:space:]]/\1/g 28 s/__attribute_const__([[:space:]]|$)/\1/g 29 s@^#include <linux/compiler(|_types).h>@@ 30 s/(^|[^a-zA-Z0-9])__packed([^a-zA-Z0-9_]|$)/\1__attribute__((packed))\2/g 31 s/(^|[[:space:](])(inline|asm|volatile)([[:space:](]|$)/\1__\2__\3/g 32 s@#(ifndef|define|endif[[:space:]]*/[*])[[:space:]]*_UAPI@#\1 @ 33' $INFILE > $TMPFILE || exit 1 34 35scripts/unifdef -U__KERNEL__ -D__EXPORTED_HEADERS__ $TMPFILE > $OUTFILE 36[ $? -gt 1 ] && exit 1 37 38rm -f $TMPFILE 39trap - EXIT 40