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Rob Landleye0e2fa42013-03-27 10:24:11 +11001#!/bin/sh
Greg Kroah-Hartmanb2441312017-11-01 15:07:57 +01002# SPDX-License-Identifier: GPL-2.0
Rob Landleye0e2fa42013-03-27 10:24:11 +11003
Javier Barriof9a4d112014-10-13 15:54:18 -07004if [ $# -lt 2 ]
Rob Landleye0e2fa42013-03-27 10:24:11 +11005then
Javier Barriof9a4d112014-10-13 15:54:18 -07006 echo "Usage: headers_install.sh OUTDIR SRCDIR [FILES...]"
Rob Landleye0e2fa42013-03-27 10:24:11 +11007 echo
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."
12 echo
13 echo "OUTDIR: directory to write each userspace header FILE to."
Nicolas Dichtelc0ff68f2013-04-29 14:15:51 +020014 echo "SRCDIR: source directory where files are picked."
Rob Landleye0e2fa42013-03-27 10:24:11 +110015 echo "FILES: list of header files to operate on."
16
17 exit 1
18fi
19
20# Grab arguments
21
22OUTDIR="$1"
23shift
Nicolas Dichtelc0ff68f2013-04-29 14:15:51 +020024SRCDIR="$1"
25shift
Rob Landleye0e2fa42013-03-27 10:24:11 +110026
27# Iterate through files listed on command line
28
29FILE=
30trap 'rm -f "$OUTDIR/$FILE" "$OUTDIR/$FILE.sed"' EXIT
31for i in "$@"
32do
33 FILE="$(basename "$i")"
34 sed -r \
35 -e 's/([ \t(])(__user|__force|__iomem)[ \t]/\1/g' \
36 -e 's/__attribute_const__([ \t]|$)/\1/g' \
Will Deacona9772282017-10-24 11:22:46 +010037 -e 's@^#include <linux/compiler(|_types).h>@@' \
Rob Landleye0e2fa42013-03-27 10:24:11 +110038 -e 's/(^|[^a-zA-Z0-9])__packed([^a-zA-Z0-9_]|$)/\1__attribute__((packed))\2/g' \
39 -e 's/(^|[ \t(])(inline|asm|volatile)([ \t(]|$)/\1__\2__\3/g' \
40 -e 's@#(ifndef|define|endif[ \t]*/[*])[ \t]*_UAPI@#\1 @' \
Nicolas Dichtelc0ff68f2013-04-29 14:15:51 +020041 "$SRCDIR/$i" > "$OUTDIR/$FILE.sed" || exit 1
Rob Landleye0e2fa42013-03-27 10:24:11 +110042 scripts/unifdef -U__KERNEL__ -D__EXPORTED_HEADERS__ "$OUTDIR/$FILE.sed" \
43 > "$OUTDIR/$FILE"
44 [ $? -gt 1 ] && exit 1
45 rm -f "$OUTDIR/$FILE.sed"
46done
47trap - EXIT