Adding upstream version 4.19.249.upstream/4.19.249upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 47 insertions, 0 deletions

diff --git a/scripts/headers_install.sh b/scripts/headers_install.sh
new file mode 100755
index 000000000..593f8879c
--- /dev/null
+++ b/scripts/headers_install.sh
@@ -0,0 +1,47 @@
+#!/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