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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475#!/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 written to"
exit 1fi
# Grab argumentsINFILE=$1OUTFILE=$2TMPFILE=$OUTFILE.tmp
trap 'rm -f $OUTFILE $TMPFILE' EXIT
# SPDX-License-Identifier with GPL variants must have "WITH Linux-syscall-note"if [ -n "$(sed -n -e "/SPDX-License-Identifier:.*GPL-/{/WITH Linux-syscall-note/!p}" $INFILE)" ]; then echo "error: $INFILE: missing \"WITH Linux-syscall-note\" for SPDX-License-Identifier" >&2 exit 1fi
sed -E -e ' s/([[:space:](])(__user|__force|__iomem)[[:space:]]/\1/g s/__attribute_const__([[:space:]]|$)/\1/g s@^#include <linux/compiler.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[ $? -gt 1 ] && exit 1
# Remove /* ... */ style comments, and find CONFIG_ references in codeconfigs=$(sed -e ':comment s:/\*[^*][^*]*:/*: s:/\*\*\**\([^/]\):/*\1: t comment s:/\*\*/: : t comment /\/\*/! b check N b comment:print P D:check s:^\(CONFIG_[[:alnum:]_]*\):\1\n: t print s:^[[:alnum:]_][[:alnum:]_]*:: s:^[^[:alnum:]_][^[:alnum:]_]*:: t check d' $OUTFILE)
for c in $configsdo echo "error: $INFILE: leak $c to user-space" >&2 exit 1done
rm -f $TMPFILEtrap - EXIT