kbuild: detect missing "WITH Linux-syscall-note" for uapi headers
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>
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@ -23,6 +23,12 @@ TMPFILE=$OUTFILE.tmp
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trap 'rm -f $OUTFILE $TMPFILE' EXIT
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# SPDX-License-Identifier with GPL variants must have "WITH Linux-syscall-note"
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if [ -n "$(sed -n -e "/SPDX-License-Identifier:.*GPL-/{/WITH Linux-syscall-note/!p}" $INFILE)" ]; then
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echo "error: $INFILE: missing \"WITH Linux-syscall-note\" for SPDX-License-Identifier" >&2
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exit 1
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fi
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sed -E -e '
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s/([[:space:](])(__user|__force|__iomem)[[:space:]]/\1/g
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s/__attribute_const__([[:space:]]|$)/\1/g
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