linux-imx

#!/bin/sh

# SPDX-License-Identifier: GPL-2.0

​

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 1

fi

​

# Grab arguments

​

OUTDIR="$1"

shift

SRCDIR="$1"

shift

​

# Iterate through files listed on command line

​

FILE=

trap 'rm -f "$OUTDIR/$FILE" "$OUTDIR/$FILE.sed"' EXIT

for i in "$@"

do

    FILE="$(basename "$i")"

    sed -E \

        -e 's/([[:space:](])(__user|__force|__iomem)[[:space:]]/\1/g' \

        -e 's/__attribute_const__([[:space:]]|$)/\1/g' \

        -e 's@^#include <linux/compiler(|_types).h>@@' \

        -e 's/(^|[^a-zA-Z0-9])__packed([^a-zA-Z0-9_]|$)/\1__attribute__((packed))\2/g' \

        -e 's/(^|[[:space:](])(inline|asm|volatile)([[:space:](]|$)/\1__\2__\3/g' \

        -e 's@#(ifndef|define|endif[[:space:]]*/[*])[[:space:]]*_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"

done

trap - EXIT