2 # SPDX-License-Identifier: GPL-2.0
6 echo "Usage: headers_install.sh OUTDIR SRCDIR [FILES...]"
8 echo "Prepares kernel header files for use by user space, by removing"
9 echo "all compiler.h definitions and #includes, removing any"
10 echo "#ifdef __KERNEL__ sections, and putting __underscores__ around"
11 echo "asm/inline/volatile keywords."
13 echo "OUTDIR: directory to write each userspace header FILE to."
14 echo "SRCDIR: source directory where files are picked."
15 echo "FILES: list of header files to operate on."
27 # Iterate through files listed on command line
30 trap 'rm -f "$OUTDIR/$FILE" "$OUTDIR/$FILE.sed"' EXIT
33 FILE="$(basename "$i")"
35 -e 's/([[:space:](])(__user|__force|__iomem)[[:space:]]/\1/g' \
36 -e 's/__attribute_const__([[:space:]]|$)/\1/g' \
37 -e 's@^#include <linux/compiler(|_types).h>@@' \
38 -e 's/(^|[^a-zA-Z0-9])__packed([^a-zA-Z0-9_]|$)/\1__attribute__((packed))\2/g' \
39 -e 's/(^|[[:space:](])(inline|asm|volatile)([[:space:](]|$)/\1__\2__\3/g' \
40 -e 's@#(ifndef|define|endif[[:space:]]*/[*])[[:space:]]*_UAPI@#\1 @' \
41 "$SRCDIR/$i" > "$OUTDIR/$FILE.sed" || exit 1
42 scripts/unifdef -U__KERNEL__ -D__EXPORTED_HEADERS__ "$OUTDIR/$FILE.sed" \
44 [ $? -gt 1 ] && exit 1
45 rm -f "$OUTDIR/$FILE.sed"