![Masahiro Yamada](/assets/img/avatar_default.png)
UAPI headers licensed under GPL are supposed to have exception "WITH Linux-syscall-note" so that they can be included into non-GPL user space application code. Unfortunately, people often miss to add it. Break 'make headers' when any of exported headers lacks the exception note so that the 0-day bot can easily catch it. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
46 lines
1.4 KiB
Bash
Executable file
46 lines
1.4 KiB
Bash
Executable file
#!/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 $TMPFILE' EXIT
|
|
|
|
# SPDX-License-Identifier with GPL variants must have "WITH Linux-syscall-note"
|
|
if [ -n "$(sed -n -e "/SPDX-License-Identifier:.*GPL-/{/WITH Linux-syscall-note/!p}" $INFILE)" ]; then
|
|
echo "error: $INFILE: missing \"WITH Linux-syscall-note\" for SPDX-License-Identifier" >&2
|
|
exit 1
|
|
fi
|
|
|
|
sed -E -e '
|
|
s/([[:space:](])(__user|__force|__iomem)[[:space:]]/\1/g
|
|
s/__attribute_const__([[:space:]]|$)/\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
|