| #!/bin/sh | |
| # SPDX-License-Identifier: GPL-2.0 | |
| if [ $# -ne 2 ] | |
| then | |
| echo "Usage: headers_install.sh INFILE OUTFILE" | |
| 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 "INFILE: header file to operate on" | |
| echo "OUTFILE: output file which the processed header is writen to" | |
| exit 1 | |
| fi | |
| # Grab arguments | |
| INFILE=$1 | |
| OUTFILE=$2 | |
| TMPFILE=$OUTFILE.tmp | |
| trap 'rm -f $OUTFILE $TMPFILE' EXIT | |
| sed -E -e ' | |
| s/([[:space:](])(__user|__force|__iomem)[[:space:]]/\1/g | |
| s/__attribute_const__([[:space:]]|$)/\1/g | |
| s@^#include <linux/compiler(|_types).h>@@ | |
| s/(^|[^a-zA-Z0-9])__packed([^a-zA-Z0-9_]|$)/\1__attribute__((packed))\2/g | |
| s/(^|[[:space:](])(inline|asm|volatile)([[:space:](]|$)/\1__\2__\3/g | |
| s@#(ifndef|define|endif[[:space:]]*/[*])[[:space:]]*_UAPI@#\1 @ | |
| ' $INFILE > $TMPFILE || exit 1 | |
| scripts/unifdef -U__KERNEL__ -D__EXPORTED_HEADERS__ $TMPFILE > $OUTFILE | |
| [ $? -gt 1 ] && exit 1 | |
| rm -f $TMPFILE | |
| trap - EXIT |